# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID 43e28a2f6037266ff44500dd57cb4f841495372e
# Parent d75a502b45eba186f2c51ea8fc3dc5aa8f0e3a4a
Delete resurrected files (from ia64 merge).
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.4.30-xen-sparse/Makefile
--- a/linux-2.4.30-xen-sparse/Makefile Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,592 +0,0 @@
-VERSION = 2
-PATCHLEVEL = 4
-SUBLEVEL = 30
-EXTRAVERSION =
-
-KERNELRELEASE=$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
-
-# SUBARCH always tells us the underlying machine architecture.
-# Unless overridden, by default ARCH is equivalent to SUBARCH.
-# This will be overriden for Xen and UML builds.
-SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ -e
s/arm.*/arm/ -e s/sa110/arm/)
-ARCH ?= $(SUBARCH)
-
-## XXX The following hack can be discarded after users have adjusted to the
-## architectural name change 'xeno' -> 'xen'.
-ifeq ($(ARCH),xeno)
- ARCH := xen
-endif
-
-KERNELPATH=kernel-$(shell echo $(KERNELRELEASE) | sed -e "s/-//g")
-
-CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
- else if [ -x /bin/bash ]; then echo /bin/bash; \
- else echo sh; fi ; fi)
-TOPDIR := $(shell /bin/pwd)
-
-HPATH = $(TOPDIR)/include
-FINDHPATH = $(HPATH)/asm $(HPATH)/linux $(HPATH)/scsi $(HPATH)/net
$(HPATH)/math-emu
-
-HOSTCC = gcc
-HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
-
-CROSS_COMPILE =
-
-#
-# Include the make variables (CC, etc...)
-#
-
-AS = $(CROSS_COMPILE)as
-LD = $(CROSS_COMPILE)ld
-CC = $(CROSS_COMPILE)gcc
-CPP = $(CC) -E
-AR = $(CROSS_COMPILE)ar
-NM = $(CROSS_COMPILE)nm
-STRIP = $(CROSS_COMPILE)strip
-OBJCOPY = $(CROSS_COMPILE)objcopy
-OBJDUMP = $(CROSS_COMPILE)objdump
-MAKEFILES = $(TOPDIR)/.config
-GENKSYMS = /sbin/genksyms
-DEPMOD = /sbin/depmod
-MODFLAGS = -DMODULE
-CFLAGS_KERNEL =
-PERL = perl
-AWK = awk
-RPM := $(shell if [ -x "/usr/bin/rpmbuild" ]; then echo rpmbuild; \
- else echo rpm; fi)
-
-export VERSION PATCHLEVEL SUBLEVEL EXTRAVERSION KERNELRELEASE ARCH \
- CONFIG_SHELL TOPDIR HPATH HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC \
- CPP AR NM STRIP OBJCOPY OBJDUMP MAKE MAKEFILES GENKSYMS MODFLAGS PERL
AWK
-
-all: do-it-all
-
-#
-# Make "config" the default target if there is no configuration file or
-# "depend" the target if there is no top-level dependency information.
-#
-
-ifeq (.config,$(wildcard .config))
-include .config
-ifeq (.depend,$(wildcard .depend))
-include .depend
-do-it-all: Version vmlinux
-else
-CONFIGURATION = depend
-do-it-all: depend
-endif
-else
-CONFIGURATION = config
-do-it-all: config
-endif
-
-#
-# INSTALL_PATH specifies where to place the updated kernel and system map
-# images. Uncomment if you want to place them anywhere other than root.
-#
-
-#export INSTALL_PATH=/boot
-
-#
-# INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
-# relocations required by build roots. This is not defined in the
-# makefile but the arguement can be passed to make if needed.
-#
-
-MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
-export MODLIB
-
-#
-# standard CFLAGS
-#
-
-CPPFLAGS := -D__KERNEL__ -I$(HPATH)
-
-CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes -Wno-trigraphs -O2 \
- -fno-strict-aliasing -fno-common
-ifndef CONFIG_FRAME_POINTER
-CFLAGS += -fomit-frame-pointer
-endif
-AFLAGS := -D__ASSEMBLY__ $(CPPFLAGS)
-
-#
-# ROOT_DEV specifies the default root-device when making the image.
-# This can be either FLOPPY, CURRENT, /dev/xxxx or empty, in which case
-# the default of FLOPPY is used by 'build'.
-# This is i386 specific.
-#
-
-export ROOT_DEV = CURRENT
-
-#
-# If you want to preset the SVGA mode, uncomment the next line and
-# set SVGA_MODE to whatever number you want.
-# Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode.
-# The number is the same as you would ordinarily press at bootup.
-# This is i386 specific.
-#
-
-export SVGA_MODE = -DSVGA_MODE=NORMAL_VGA
-
-#
-# If you want the RAM disk device, define this to be the size in blocks.
-# This is i386 specific.
-#
-
-#export RAMDISK = -DRAMDISK=512
-
-CORE_FILES =kernel/kernel.o mm/mm.o fs/fs.o ipc/ipc.o
-NETWORKS =net/network.o
-
-LIBS =$(TOPDIR)/lib/lib.a
-SUBDIRS =kernel drivers mm fs net ipc lib crypto
-
-DRIVERS-n :=
-DRIVERS-y :=
-DRIVERS-m :=
-DRIVERS- :=
-
-DRIVERS-$(CONFIG_ACPI_BOOT) += drivers/acpi/acpi.o
-DRIVERS-$(CONFIG_PARPORT) += drivers/parport/driver.o
-DRIVERS-y += drivers/char/char.o \
- drivers/block/block.o \
- drivers/misc/misc.o \
- drivers/net/net.o
-DRIVERS-$(CONFIG_AGP) += drivers/char/agp/agp.o
-DRIVERS-$(CONFIG_DRM_NEW) += drivers/char/drm/drm.o
-DRIVERS-$(CONFIG_DRM_OLD) += drivers/char/drm-4.0/drm.o
-DRIVERS-$(CONFIG_NUBUS) += drivers/nubus/nubus.a
-DRIVERS-$(CONFIG_NET_FC) += drivers/net/fc/fc.o
-DRIVERS-$(CONFIG_DEV_APPLETALK) += drivers/net/appletalk/appletalk.o
-DRIVERS-$(CONFIG_TR) += drivers/net/tokenring/tr.o
-DRIVERS-$(CONFIG_WAN) += drivers/net/wan/wan.o
-DRIVERS-$(CONFIG_ARCNET) += drivers/net/arcnet/arcnetdrv.o
-DRIVERS-$(CONFIG_ATM) += drivers/atm/atm.o
-DRIVERS-$(CONFIG_IDE) += drivers/ide/idedriver.o
-DRIVERS-$(CONFIG_FC4) += drivers/fc4/fc4.a
-DRIVERS-$(CONFIG_SCSI) += drivers/scsi/scsidrv.o
-DRIVERS-$(CONFIG_FUSION_BOOT) += drivers/message/fusion/fusion.o
-DRIVERS-$(CONFIG_IEEE1394) += drivers/ieee1394/ieee1394drv.o
-
-ifneq
($(CONFIG_CD_NO_IDESCSI)$(CONFIG_BLK_DEV_IDECD)$(CONFIG_BLK_DEV_SR)$(CONFIG_PARIDE_PCD),)
-DRIVERS-y += drivers/cdrom/driver.o
-endif
-
-DRIVERS-$(CONFIG_SOUND) += drivers/sound/sounddrivers.o
-DRIVERS-$(CONFIG_PCI) += drivers/pci/driver.o
-DRIVERS-$(CONFIG_MTD) += drivers/mtd/mtdlink.o
-DRIVERS-$(CONFIG_PCMCIA) += drivers/pcmcia/pcmcia.o
-DRIVERS-$(CONFIG_NET_PCMCIA) += drivers/net/pcmcia/pcmcia_net.o
-DRIVERS-$(CONFIG_NET_WIRELESS) += drivers/net/wireless/wireless_net.o
-DRIVERS-$(CONFIG_PCMCIA_CHRDEV) += drivers/char/pcmcia/pcmcia_char.o
-DRIVERS-$(CONFIG_DIO) += drivers/dio/dio.a
-DRIVERS-$(CONFIG_SBUS) += drivers/sbus/sbus_all.o
-DRIVERS-$(CONFIG_ZORRO) += drivers/zorro/driver.o
-DRIVERS-$(CONFIG_FC4) += drivers/fc4/fc4.a
-DRIVERS-$(CONFIG_PPC32) += drivers/macintosh/macintosh.o
-DRIVERS-$(CONFIG_MAC) += drivers/macintosh/macintosh.o
-DRIVERS-$(CONFIG_ISAPNP) += drivers/pnp/pnp.o
-DRIVERS-$(CONFIG_I2C) += drivers/i2c/i2c.o
-DRIVERS-$(CONFIG_VT) += drivers/video/video.o
-DRIVERS-$(CONFIG_PARIDE) += drivers/block/paride/paride.a
-DRIVERS-$(CONFIG_HAMRADIO) += drivers/net/hamradio/hamradio.o
-DRIVERS-$(CONFIG_TC) += drivers/tc/tc.a
-DRIVERS-$(CONFIG_USB) += drivers/usb/usbdrv.o
-DRIVERS-$(CONFIG_USB_GADGET) += drivers/usb/gadget/built-in.o
-DRIVERS-y +=drivers/media/media.o
-DRIVERS-$(CONFIG_INPUT) += drivers/input/inputdrv.o
-DRIVERS-$(CONFIG_HIL) += drivers/hil/hil.o
-DRIVERS-$(CONFIG_I2O) += drivers/message/i2o/i2o.o
-DRIVERS-$(CONFIG_IRDA) += drivers/net/irda/irda.o
-DRIVERS-$(CONFIG_PHONE) += drivers/telephony/telephony.o
-DRIVERS-$(CONFIG_MD) += drivers/md/mddev.o
-DRIVERS-$(CONFIG_GSC) += drivers/gsc/gscbus.o
-DRIVERS-$(CONFIG_BLUEZ) += drivers/bluetooth/bluetooth.o
-DRIVERS-$(CONFIG_HOTPLUG_PCI) += drivers/hotplug/vmlinux-obj.o
-DRIVERS-$(CONFIG_ISDN_BOOL) += drivers/isdn/vmlinux-obj.o
-DRIVERS-$(CONFIG_CRYPTO) += crypto/crypto.o
-
-DRIVERS := $(DRIVERS-y)
-
-
-# files removed with 'make clean'
-CLEAN_FILES = \
- kernel/ksyms.lst include/linux/compile.h \
- vmlinux System.map \
- .tmp* \
- drivers/char/consolemap_deftbl.c drivers/video/promcon_tbl.c \
- drivers/char/conmakehash \
- drivers/char/drm/*-mod.c \
- drivers/pci/devlist.h drivers/pci/classlist.h drivers/pci/gen-devlist \
- drivers/zorro/devlist.h drivers/zorro/gen-devlist \
- drivers/sound/bin2hex drivers/sound/hex2hex \
- drivers/atm/fore200e_mkfirm drivers/atm/{pca,sba}*{.bin,.bin1,.bin2} \
- drivers/scsi/aic7xxx/aicasm/aicasm \
- drivers/scsi/aic7xxx/aicasm/aicasm_gram.c \
- drivers/scsi/aic7xxx/aicasm/aicasm_gram.h \
- drivers/scsi/aic7xxx/aicasm/aicasm_macro_gram.c \
- drivers/scsi/aic7xxx/aicasm/aicasm_macro_gram.h \
- drivers/scsi/aic7xxx/aicasm/aicasm_macro_scan.c \
- drivers/scsi/aic7xxx/aicasm/aicasm_scan.c \
- drivers/scsi/aic7xxx/aicasm/aicdb.h \
- drivers/scsi/aic7xxx/aicasm/y.tab.h \
- drivers/scsi/53c700_d.h \
- drivers/tc/lk201-map.c \
- net/khttpd/make_times_h \
- net/khttpd/times.h \
- submenu* \
- drivers/ieee1394/oui.c
-# directories removed with 'make clean'
-CLEAN_DIRS = \
- modules
-
-# files removed with 'make mrproper'
-MRPROPER_FILES = \
- include/linux/autoconf.h include/linux/version.h \
- lib/crc32table.h lib/gen_crc32table \
- drivers/net/hamradio/soundmodem/sm_tbl_{afsk1200,afsk2666,fsk9600}.h \
- drivers/net/hamradio/soundmodem/sm_tbl_{hapn4800,psk4800}.h \
- drivers/net/hamradio/soundmodem/sm_tbl_{afsk2400_7,afsk2400_8}.h \
- drivers/net/hamradio/soundmodem/gentbl \
- drivers/sound/*_boot.h drivers/sound/.*.boot \
- drivers/sound/msndinit.c \
- drivers/sound/msndperm.c \
- drivers/sound/pndsperm.c \
- drivers/sound/pndspini.c \
- drivers/atm/fore200e_*_fw.c drivers/atm/.fore200e_*.fw \
- .version .config* config.in config.old \
- scripts/tkparse scripts/kconfig.tk scripts/kconfig.tmp \
- scripts/lxdialog/*.o scripts/lxdialog/lxdialog \
- .menuconfig.log \
- include/asm \
- .hdepend scripts/mkdep scripts/split-include scripts/docproc \
- $(TOPDIR)/include/linux/modversions.h \
- kernel.spec
-
-# directories removed with 'make mrproper'
-MRPROPER_DIRS = \
- include/config \
- $(TOPDIR)/include/linux/modules
-
-
-include arch/$(ARCH)/Makefile
-
-# Extra cflags for kbuild 2.4. The default is to forbid includes by kernel
code
-# from user space headers. Some UML code requires user space headers, in the
-# UML Makefiles add 'kbuild_2_4_nostdinc :=' before include Rules.make. No
-# other kernel code should include user space headers, if you need
-# 'kbuild_2_4_nostdinc :=' or -I/usr/include for kernel code and you are not
UML
-# then your code is broken! KAO.
-
-kbuild_2_4_nostdinc := -nostdinc -iwithprefix include
-export kbuild_2_4_nostdinc
-
-export CPPFLAGS CFLAGS CFLAGS_KERNEL AFLAGS AFLAGS_KERNEL
-
-export NETWORKS DRIVERS LIBS HEAD LDFLAGS LINKFLAGS MAKEBOOT ASFLAGS
-
-.S.s:
- $(CPP) $(AFLAGS) $(AFLAGS_KERNEL) -traditional -o $*.s $<
-.S.o:
- $(CC) $(AFLAGS) $(AFLAGS_KERNEL) -traditional -c -o $*.o $<
-
-Version: dummy
- @rm -f include/linux/compile.h
-
-boot: vmlinux
- @$(MAKE) CFLAGS="$(CFLAGS) $(CFLAGS_KERNEL)" -C arch/$(ARCH)/boot
-
-vmlinux: include/linux/version.h $(CONFIGURATION) init/main.o init/version.o
init/do_mounts.o linuxsubdirs
- $(LD) $(LINKFLAGS) $(HEAD) init/main.o init/version.o init/do_mounts.o \
- --start-group \
- $(CORE_FILES) \
- $(DRIVERS) \
- $(NETWORKS) \
- $(LIBS) \
- --end-group \
- -o vmlinux
- $(NM) vmlinux | grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw]
\)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | sort > System.map
-
-symlinks:
- rm -f include/asm
- ( cd include ; ln -sf asm-$(ARCH) asm)
- @if [ ! -d include/linux/modules ]; then \
- mkdir include/linux/modules; \
- fi
-
-oldconfig: symlinks
- $(CONFIG_SHELL) scripts/Configure -d arch/$(ARCH)/config.in
-
-xconfig: symlinks
- $(MAKE) -C scripts kconfig.tk
- wish -f scripts/kconfig.tk
-
-menuconfig: include/linux/version.h symlinks
- $(MAKE) -C scripts/lxdialog all
- $(CONFIG_SHELL) scripts/Menuconfig arch/$(ARCH)/config.in
-
-config: symlinks
- $(CONFIG_SHELL) scripts/Configure arch/$(ARCH)/config.in
-
-include/config/MARKER: scripts/split-include include/linux/autoconf.h
- scripts/split-include include/linux/autoconf.h include/config
- @ touch include/config/MARKER
-
-linuxsubdirs: $(patsubst %, _dir_%, $(SUBDIRS))
-
-$(patsubst %, _dir_%, $(SUBDIRS)) : dummy include/linux/version.h
include/config/MARKER
- $(MAKE) CFLAGS="$(CFLAGS) $(CFLAGS_KERNEL)" -C $(patsubst _dir_%, %, $@)
-
-$(TOPDIR)/include/linux/version.h: include/linux/version.h
-$(TOPDIR)/include/linux/compile.h: include/linux/compile.h
-
-newversion:
- . scripts/mkversion > .tmpversion
- @mv -f .tmpversion .version
-
-uts_len := 64
-uts_truncate := sed -e 's/\(.\{1,$(uts_len)\}\).*/\1/'
-
-include/linux/compile.h: $(CONFIGURATION) include/linux/version.h newversion
- @echo -n \#`cat .version` > .ver1
- @if [ -n "$(CONFIG_SMP)" ] ; then echo -n " SMP" >> .ver1; fi
- @if [ -f .name ]; then echo -n \-`cat .name` >> .ver1; fi
- @LANG=C echo ' '`date` >> .ver1
- @echo \#define UTS_VERSION \"`cat .ver1 | $(uts_truncate)`\" > .ver
- @LANG=C echo \#define LINUX_COMPILE_TIME \"`date +%T`\" >> .ver
- @echo \#define LINUX_COMPILE_BY \"`whoami`\" >> .ver
- @echo \#define LINUX_COMPILE_HOST \"`hostname | $(uts_truncate)`\" >>
.ver
- @([ -x /bin/dnsdomainname ] && /bin/dnsdomainname > .ver1) || \
- ([ -x /bin/domainname ] && /bin/domainname > .ver1) || \
- echo > .ver1
- @echo \#define LINUX_COMPILE_DOMAIN \"`cat .ver1 | $(uts_truncate)`\"
>> .ver
- @echo \#define LINUX_COMPILER \"`$(CC) $(CFLAGS) -v 2>&1 | tail -n 1`\"
>> .ver
- @mv -f .ver $@
- @rm -f .ver1
-
-include/linux/version.h: ./Makefile
- @expr length "$(KERNELRELEASE)" \<= $(uts_len) > /dev/null || \
- (echo KERNELRELEASE \"$(KERNELRELEASE)\" exceeds $(uts_len)
characters >&2; false)
- @echo \#define UTS_RELEASE \"$(KERNELRELEASE)\" > .ver
- @echo \#define LINUX_VERSION_CODE `expr $(VERSION) \\* 65536 +
$(PATCHLEVEL) \\* 256 + $(SUBLEVEL)` >> .ver
- @echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'
>>.ver
- @mv -f .ver $@
-
-comma := ,
-
-init/version.o: init/version.c include/linux/compile.h include/config/MARKER
- $(CC) $(CFLAGS) $(CFLAGS_KERNEL) -DUTS_MACHINE='"$(SUBARCH)"'
-DKBUILD_BASENAME=$(subst $(comma),_,$(subst -,_,$(*F))) -c -o init/version.o
init/version.c
-
-init/main.o: init/main.c include/config/MARKER
- $(CC) $(CFLAGS) $(CFLAGS_KERNEL) $(PROFILING) -DKBUILD_BASENAME=$(subst
$(comma),_,$(subst -,_,$(*F))) -c -o $@ $<
-
-init/do_mounts.o: init/do_mounts.c include/config/MARKER
- $(CC) $(CFLAGS) $(CFLAGS_KERNEL) $(PROFILING) -DKBUILD_BASENAME=$(subst
$(comma),_,$(subst -,_,$(*F))) -c -o $@ $<
-
-fs lib mm ipc kernel drivers net: dummy
- $(MAKE) CFLAGS="$(CFLAGS) $(CFLAGS_KERNEL)" $(subst $@, _dir_$@, $@)
-
-TAGS: dummy
- { find include/asm-${ARCH} -name '*.h' -print ; \
- find include -type d \( -name "asm-*" -o -name config \) -prune -o
-name '*.h' -print ; \
- find $(SUBDIRS) init arch/${ARCH} -name '*.[chS]' ; } | grep -v SCCS |
grep -v '\.svn' | etags -
-
-# Exuberant ctags works better with -I
-tags: dummy
- CTAGSF=`ctags --version | grep -i exuberant >/dev/null && echo "-I
__initdata,__exitdata,EXPORT_SYMBOL,EXPORT_SYMBOL_NOVERS"`; \
- ctags $$CTAGSF `find include/asm-$(ARCH) -name '*.h'` && \
- find include -type d \( -name "asm-*" -o -name config \) -prune -o
-name '*.h' -print | xargs ctags $$CTAGSF -a && \
- find $(SUBDIRS) init -name '*.[ch]' | xargs ctags $$CTAGSF -a
-
-ifdef CONFIG_MODULES
-ifdef CONFIG_MODVERSIONS
-MODFLAGS += -DMODVERSIONS -include $(HPATH)/linux/modversions.h
-endif
-
-.PHONY: modules
-modules: $(patsubst %, _mod_%, $(SUBDIRS))
-
-.PHONY: $(patsubst %, _mod_%, $(SUBDIRS))
-$(patsubst %, _mod_%, $(SUBDIRS)) : include/linux/version.h
include/config/MARKER
- $(MAKE) -C $(patsubst _mod_%, %, $@) CFLAGS="$(CFLAGS) $(MODFLAGS)"
MAKING_MODULES=1 modules
-
-.PHONY: modules_install
-modules_install: _modinst_ $(patsubst %, _modinst_%, $(SUBDIRS)) _modinst_post
-
-.PHONY: _modinst_
-_modinst_:
- @rm -rf $(MODLIB)/kernel
- @rm -f $(MODLIB)/build
- @mkdir -p $(MODLIB)/kernel
- @ln -s $(TOPDIR) $(MODLIB)/build
-
-# If System.map exists, run depmod. This deliberately does not have a
-# dependency on System.map since that would run the dependency tree on
-# vmlinux. This depmod is only for convenience to give the initial
-# boot a modules.dep even before / is mounted read-write. However the
-# boot script depmod is the master version.
-ifeq "$(strip $(INSTALL_MOD_PATH))" ""
-depmod_opts :=
-else
-depmod_opts := -b $(INSTALL_MOD_PATH) -r
-endif
-.PHONY: _modinst_post
-_modinst_post: _modinst_post_pcmcia
- if [ -r System.map ]; then $(DEPMOD) -ae -F System.map $(depmod_opts)
$(KERNELRELEASE); fi
-
-# Backwards compatibilty symlinks for people still using old versions
-# of pcmcia-cs with hard coded pathnames on insmod. Remove
-# _modinst_post_pcmcia for kernel 2.4.1.
-.PHONY: _modinst_post_pcmcia
-_modinst_post_pcmcia:
- cd $(MODLIB); \
- mkdir -p pcmcia; \
- find kernel -path '*/pcmcia/*' -name '*.o' | xargs -i -r ln -sf ../{}
pcmcia
-
-.PHONY: $(patsubst %, _modinst_%, $(SUBDIRS))
-$(patsubst %, _modinst_%, $(SUBDIRS)) :
- $(MAKE) -C $(patsubst _modinst_%, %, $@) modules_install
-
-# modules disabled....
-
-else
-modules modules_install: dummy
- @echo
- @echo "The present kernel configuration has modules disabled."
- @echo "Type 'make config' and enable loadable module support."
- @echo "Then build a kernel with module support enabled."
- @echo
- @exit 1
-endif
-
-clean: archclean
- find . \( -name '*.[oas]' -o -name core -o -name '.*.flags' \) -type f
-print \
- | grep -v lxdialog/ | xargs rm -f
- rm -f $(CLEAN_FILES)
- rm -rf $(CLEAN_DIRS)
- $(MAKE) -C Documentation/DocBook clean
-
-mrproper: clean archmrproper
- find . \( -size 0 -o -name .depend \) -type f -print | xargs rm -f
- rm -f $(MRPROPER_FILES)
- rm -rf $(MRPROPER_DIRS)
- $(MAKE) -C Documentation/DocBook mrproper
-
-distclean: mrproper
- rm -f core `find . \( -not -type d \) -and \
- \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
- -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
- -o -name '.*.rej' -o -name '.SUMS' -o -size 0 \) -type f
-print` TAGS tags
-
-backup: mrproper
- cd .. && tar cf - linux/ | gzip -9 > backup.gz
- sync
-
-sgmldocs:
- chmod 755 $(TOPDIR)/scripts/docgen
- chmod 755 $(TOPDIR)/scripts/gen-all-syms
- chmod 755 $(TOPDIR)/scripts/kernel-doc
- $(MAKE) -C $(TOPDIR)/Documentation/DocBook books
-
-psdocs: sgmldocs
- $(MAKE) -C Documentation/DocBook ps
-
-pdfdocs: sgmldocs
- $(MAKE) -C Documentation/DocBook pdf
-
-htmldocs: sgmldocs
- $(MAKE) -C Documentation/DocBook html
-
-mandocs:
- chmod 755 $(TOPDIR)/scripts/kernel-doc
- chmod 755 $(TOPDIR)/scripts/split-man
- $(MAKE) -C Documentation/DocBook man
-
-sums:
- find . -type f -print | sort | xargs sum > .SUMS
-
-dep-files: scripts/mkdep archdep include/linux/version.h
- rm -f .depend .hdepend
- $(MAKE) $(patsubst %,_sfdep_%,$(SUBDIRS))
_FASTDEP_ALL_SUB_DIRS="$(SUBDIRS)"
-ifdef CONFIG_MODVERSIONS
- $(MAKE) update-modverfile
-endif
- scripts/mkdep -- `find $(FINDHPATH) \( -name SCCS -o -name .svn \)
-prune -o -follow -name \*.h ! -name modversions.h -print` > .hdepend
- scripts/mkdep -- init/*.c > .depend
-
-ifdef CONFIG_MODVERSIONS
-MODVERFILE := $(TOPDIR)/include/linux/modversions.h
-else
-MODVERFILE :=
-endif
-export MODVERFILE
-
-depend dep: dep-files
-
-checkconfig:
- find * -name '*.[hcS]' -type f -print | sort | xargs $(PERL) -w
scripts/checkconfig.pl
-
-checkhelp:
- find * -name [cC]onfig.in -print | sort | xargs $(PERL) -w
scripts/checkhelp.pl
-
-checkincludes:
- find * -name '*.[hcS]' -type f -print | sort | xargs $(PERL) -w
scripts/checkincludes.pl
-
-ifdef CONFIGURATION
-..$(CONFIGURATION):
- @echo
- @echo "You have a bad or nonexistent" .$(CONFIGURATION) ": running
'make" $(CONFIGURATION)"'"
- @echo
- $(MAKE) $(CONFIGURATION)
- @echo
- @echo "Successful. Try re-making (ignore the error that follows)"
- @echo
- exit 1
-
-#dummy: ..$(CONFIGURATION)
-dummy:
-
-else
-
-dummy:
-
-endif
-
-include Rules.make
-
-#
-# This generates dependencies for the .h files.
-#
-
-scripts/mkdep: scripts/mkdep.c
- $(HOSTCC) $(HOSTCFLAGS) -o scripts/mkdep scripts/mkdep.c
-
-scripts/split-include: scripts/split-include.c
- $(HOSTCC) $(HOSTCFLAGS) -o scripts/split-include scripts/split-include.c
-
-#
-# RPM target
-#
-# If you do a make spec before packing the tarball you can rpm -ta it
-#
-spec:
- . scripts/mkspec >kernel.spec
-
-#
-# Build a tar ball, generate an rpm from it and pack the result
-# There arw two bits of magic here
-# 1) The use of /. to avoid tar packing just the symlink
-# 2) Removing the .dep files as they have source paths in them that
-# will become invalid
-#
-rpm: clean spec
- find . \( -size 0 -o -name .depend -o -name .hdepend \) -type f -print
| xargs rm -f
- set -e; \
- cd $(TOPDIR)/.. ; \
- ln -sf $(TOPDIR) $(KERNELPATH) ; \
- tar -cvz --exclude CVS -f $(KERNELPATH).tar.gz $(KERNELPATH)/. ; \
- rm $(KERNELPATH) ; \
- cd $(TOPDIR) ; \
- . scripts/mkversion > .version ; \
- $(RPM) -ta $(TOPDIR)/../$(KERNELPATH).tar.gz ; \
- rm $(TOPDIR)/../$(KERNELPATH).tar.gz
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.4.30-xen-sparse/arch/xen/Makefile
--- a/linux-2.4.30-xen-sparse/arch/xen/Makefile Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,139 +0,0 @@
-#
-# xen/Makefile
-#
-# This file is included by the global makefile so that you can add your own
-# architecture-specific flags and dependencies. Remember to do have actions
-# for "archclean" and "archdep" for cleaning up and making dependencies for
-# this architecture
-#
-# This file is subject to the terms and conditions of the GNU General Public
-# License. See the file "COPYING" in the main directory of this archive
-# for more details.
-#
-# Copyright (C) 1994 by Linus Torvalds
-#
-# 19990713 Artur Skawina <skawina@xxxxxxxxxxxxx>
-# Added '-march' and '-mpreferred-stack-boundary' support
-#
-
-# If no .config file exists then use the appropriate defconfig-* file
-ifneq (.config,$(wildcard .config))
-DUMMYX:=$(shell cp $(TOPDIR)/arch/xen/defconfig$(EXTRAVERSION)
$(TOPDIR)/.config)
--include $(TOPDIR)/.config
-endif
-
-LD=$(CROSS_COMPILE)ld -m elf_i386
-OBJCOPY=$(CROSS_COMPILE)objcopy -R .note -R .comment -S
-LDFLAGS=-e stext
-LINKFLAGS =-T $(TOPDIR)/arch/xen/vmlinux.lds $(LDFLAGS)
-
-CFLAGS += -pipe
-
-check_gcc = $(shell if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null
2>&1; then echo "$(1)"; else echo "$(2)"; fi)
-
-# prevent gcc from keeping the stack 16 byte aligned
-CFLAGS += $(call check_gcc,-mpreferred-stack-boundary=2,)
-
-ifdef CONFIG_M686
-CFLAGS += -march=i686
-endif
-
-ifdef CONFIG_MPENTIUMIII
-CFLAGS += -march=i686
-endif
-
-ifdef CONFIG_MPENTIUM4
-CFLAGS += -march=i686
-endif
-
-ifdef CONFIG_MK7
-CFLAGS += $(call check_gcc,-march=athlon,-march=i686 -malign-functions=4)
-endif
-
-# Disable unit-at-a-time mode, it makes gcc use a lot more stack
-# due to the lack of sharing of stacklots.
-CFLAGS += $(call check_gcc,-fno-unit-at-a-time,)
-
-HEAD := arch/xen/kernel/head.o arch/xen/kernel/init_task.o
-
-SUBDIRS += arch/xen/kernel arch/xen/mm arch/xen/lib
-SUBDIRS += arch/xen/drivers/console
-SUBDIRS += arch/xen/drivers/evtchn
-SUBDIRS += arch/xen/drivers/blkif
-SUBDIRS += arch/xen/drivers/netif
-SUBDIRS += arch/xen/drivers/usbif
-SUBDIRS += arch/xen/drivers/balloon
-ifdef CONFIG_XEN_PRIVILEGED_GUEST
-SUBDIRS += arch/xen/drivers/dom0
-endif
-
-CORE_FILES += arch/xen/kernel/kernel.o arch/xen/mm/mm.o
-CORE_FILES += arch/xen/drivers/evtchn/drv.o
-CORE_FILES += arch/xen/drivers/console/drv.o
-DRIVERS += arch/xen/drivers/blkif/drv.o
-DRIVERS += arch/xen/drivers/netif/drv.o
-DRIVERS += arch/xen/drivers/usbif/drv.o
-ifdef CONFIG_XEN_PRIVILEGED_GUEST
-CORE_FILES += arch/xen/drivers/dom0/drv.o
-endif
-CORE_FILES += arch/xen/drivers/balloon/drv.o
-LIBS := $(TOPDIR)/arch/xen/lib/lib.a $(LIBS) $(TOPDIR)/arch/xen/lib/lib.a
-
-arch/xen/kernel: dummy
- $(MAKE) linuxsubdirs SUBDIRS=arch/xen/kernel
-
-arch/xen/mm: dummy
- $(MAKE) linuxsubdirs SUBDIRS=arch/xen/mm
-
-arch/xen/drivers/console: dummy
- $(MAKE) linuxsubdirs SUBDIRS=arch/xen/drivers/console
-
-arch/xen/drivers/network: dummy
- $(MAKE) linuxsubdirs SUBDIRS=arch/xen/drivers/network
-
-arch/xen/drivers/block: dummy
- $(MAKE) linuxsubdirs SUBDIRS=arch/xen/drivers/block
-
-arch/xen/drivers/dom0: dummy
- $(MAKE) linuxsubdirs SUBDIRS=arch/xen/drivers/dom0
-
-arch/xen/drivers/balloon: dummy
- $(MAKE) linuxsubdirs SUBDIRS=arch/xen/drivers/balloon
-
-MAKEBOOT = $(MAKE) -C arch/$(ARCH)/boot
-
-vmlinux: arch/xen/vmlinux.lds
-
-FORCE: ;
-
-.PHONY: bzImage compressed clean archclean archmrproper archdep
-
-
-bzImage: vmlinux
- @$(MAKEBOOT) bzImage
-
-INSTALL_NAME ?= $(KERNELRELEASE)
-install: bzImage
- mkdir -p $(INSTALL_PATH)/boot
- ln -f -s vmlinuz-$(INSTALL_NAME)$(INSTALL_SUFFIX)
$(INSTALL_PATH)/boot/vmlinuz-$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(XENGUEST)$(INSTALL_SUFFIX)
- rm -f $(INSTALL_PATH)/boot/vmlinuz-$(INSTALL_NAME)$(INSTALL_SUFFIX)
- install -m0644 arch/$(ARCH)/boot/bzImage
$(INSTALL_PATH)/boot/vmlinuz-$(INSTALL_NAME)$(INSTALL_SUFFIX)
- install -m0644 vmlinux
$(INSTALL_PATH)/boot/vmlinux-syms-$(INSTALL_NAME)$(INSTALL_SUFFIX)
- install -m0664 .config
$(INSTALL_PATH)/boot/config-$(INSTALL_NAME)$(INSTALL_SUFFIX)
- install -m0664 System.map
$(INSTALL_PATH)/boot/System.map-$(INSTALL_NAME)$(INSTALL_SUFFIX)
- ln -f -s vmlinuz-$(INSTALL_NAME)$(INSTALL_SUFFIX)
$(INSTALL_PATH)/boot/vmlinuz-$(VERSION).$(PATCHLEVEL)$(XENGUEST)$(INSTALL_SUFFIX)
-
-%_config: arch/xen/defconfig-%
- rm -f .config arch/xen/defconfig
- cp -f arch/xen/defconfig-$(@:_config=) arch/xen/defconfig
- cp -f arch/xen/defconfig-$(@:_config=) .config
-
-
-archclean:
- @$(MAKEBOOT) clean
-
-archmrproper:
- rm -f include/asm-xen/xen-public/arch
-
-archdep:
- @$(MAKEBOOT) dep
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/boot/Makefile
--- a/linux-2.4.30-xen-sparse/arch/xen/boot/Makefile Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,13 +0,0 @@
-#
-# arch/xen/boot/Makefile
-#
-
-bzImage: $(TOPDIR)/vmlinux
- $(OBJCOPY) $< Image
- gzip -f -9 < Image > $@
- rm -f Image
-
-dep:
-
-clean:
- rm -f bzImage Image
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.4.30-xen-sparse/arch/xen/config.in
--- a/linux-2.4.30-xen-sparse/arch/xen/config.in Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,337 +0,0 @@
-#
-# For a description of the syntax of this configuration file,
-# see Documentation/kbuild/config-language.txt.
-#
-mainmenu_name "Linux Kernel Configuration"
-
-define_bool CONFIG_XEN y
-
-define_bool CONFIG_X86 y
-define_bool CONFIG_ISA y
-define_bool CONFIG_SBUS n
-
-define_bool CONFIG_UID16 y
-
-mainmenu_option next_comment
-comment 'Xen'
-bool 'Support for privileged operations (domain 0)' CONFIG_XEN_PRIVILEGED_GUEST
-bool 'Device-driver domain (physical device access)' CONFIG_XEN_PHYSDEV_ACCESS
-if [ "$CONFIG_XEN_PHYSDEV_ACCESS" = "y" ]; then
- bool 'USB-device backend driver' CONFIG_XEN_USB_BACKEND
-fi
-bool 'Scrub memory before freeing it to Xen' CONFIG_XEN_SCRUB_PAGES
-bool 'Network-device frontend driver' CONFIG_XEN_NETDEV_FRONTEND
-bool 'Block-device frontend driver' CONFIG_XEN_BLKDEV_FRONTEND
-bool 'Block-device uses grant tables' CONFIG_XEN_BLKDEV_GRANT
-bool 'USB-device frontend driver' CONFIG_XEN_USB_FRONTEND
-endmenu
-# The IBM S/390 patch needs this.
-define_bool CONFIG_NO_IDLE_HZ y
-
-if [ "$CONFIG_XEN_PHYSDEV_ACCESS" = "y" ]; then
- define_bool CONFIG_FOREIGN_PAGES y
-else
- define_bool CONFIG_FOREIGN_PAGES n
- define_bool CONFIG_NETDEVICES y
- define_bool CONFIG_VT n
-fi
-
-mainmenu_option next_comment
-comment 'Code maturity level options'
-bool 'Prompt for development and/or incomplete code/drivers'
CONFIG_EXPERIMENTAL
-endmenu
-
-mainmenu_option next_comment
-comment 'Loadable module support'
-bool 'Enable loadable module support' CONFIG_MODULES
-if [ "$CONFIG_MODULES" = "y" ]; then
- bool ' Set version information on all module symbols' CONFIG_MODVERSIONS
- bool ' Kernel module loader' CONFIG_KMOD
-fi
-endmenu
-
-mainmenu_option next_comment
-comment 'Processor type and features'
-choice 'Processor family' \
- "Pentium-Pro/Celeron/Pentium-II CONFIG_M686 \
- Pentium-III/Celeron(Coppermine) CONFIG_MPENTIUMIII \
- Pentium-4 CONFIG_MPENTIUM4 \
- Athlon/Duron/K7 CONFIG_MK7 \
- Opteron/Athlon64/Hammer/K8 CONFIG_MK8 \
- VIA-C3-2 CONFIG_MVIAC3_2" Pentium-Pro
-
- define_bool CONFIG_X86_WP_WORKS_OK y
- define_bool CONFIG_X86_INVLPG y
- define_bool CONFIG_X86_CMPXCHG y
- define_bool CONFIG_X86_XADD y
- define_bool CONFIG_X86_BSWAP y
- define_bool CONFIG_X86_POPAD_OK y
- define_bool CONFIG_RWSEM_GENERIC_SPINLOCK n
- define_bool CONFIG_RWSEM_XCHGADD_ALGORITHM y
-
- define_bool CONFIG_X86_GOOD_APIC y
- define_bool CONFIG_X86_PGE y
- define_bool CONFIG_X86_USE_PPRO_CHECKSUM y
- define_bool CONFIG_X86_TSC y
-
-if [ "$CONFIG_M686" = "y" ]; then
- define_int CONFIG_X86_L1_CACHE_SHIFT 5
-fi
-if [ "$CONFIG_MPENTIUMIII" = "y" ]; then
- define_int CONFIG_X86_L1_CACHE_SHIFT 5
-fi
-if [ "$CONFIG_MPENTIUM4" = "y" ]; then
- define_int CONFIG_X86_L1_CACHE_SHIFT 7
-fi
-if [ "$CONFIG_MK8" = "y" ]; then
- define_bool CONFIG_MK7 y
-fi
-if [ "$CONFIG_MK7" = "y" ]; then
- define_int CONFIG_X86_L1_CACHE_SHIFT 6
- define_bool CONFIG_X86_USE_3DNOW y
-fi
-if [ "$CONFIG_MVIAC3_2" = "y" ]; then
- define_int CONFIG_X86_L1_CACHE_SHIFT 5
-fi
-
-#if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
-# tristate 'BIOS Enhanced Disk Drive calls determine boot disk
(EXPERIMENTAL)' CONFIG_EDD
-#fi
-
-choice 'High Memory Support' \
- "off CONFIG_NOHIGHMEM \
- 4GB CONFIG_HIGHMEM4G" off
-# 64GB CONFIG_HIGHMEM64G" off
-if [ "$CONFIG_HIGHMEM4G" = "y" ]; then
- define_bool CONFIG_HIGHMEM y
-fi
-if [ "$CONFIG_HIGHMEM64G" = "y" ]; then
- define_bool CONFIG_HIGHMEM y
- define_bool CONFIG_X86_PAE y
-fi
-
-if [ "$CONFIG_HIGHMEM" = "y" ]; then
- bool 'HIGHMEM I/O support' CONFIG_HIGHIO
-fi
-
-define_int CONFIG_FORCE_MAX_ZONEORDER 11
-
-#bool 'Symmetric multi-processing support' CONFIG_SMP
-#if [ "$CONFIG_SMP" = "y" -a "$CONFIG_X86_CMPXCHG" = "y" ]; then
-# define_bool CONFIG_HAVE_DEC_LOCK y
-#fi
-endmenu
-
-mainmenu_option next_comment
-comment 'General setup'
-
-bool 'Networking support' CONFIG_NET
-
-if [ "$CONFIG_XEN_PHYSDEV_ACCESS" = "y" ]; then
- bool 'PCI support' CONFIG_PCI
- source drivers/pci/Config.in
-
- bool 'Support for hot-pluggable devices' CONFIG_HOTPLUG
-
- if [ "$CONFIG_HOTPLUG" = "y" ] ; then
- source drivers/pcmcia/Config.in
- source drivers/hotplug/Config.in
- else
- define_bool CONFIG_PCMCIA n
- define_bool CONFIG_HOTPLUG_PCI n
- fi
-fi
-
-bool 'System V IPC' CONFIG_SYSVIPC
-bool 'BSD Process Accounting' CONFIG_BSD_PROCESS_ACCT
-bool 'Sysctl support' CONFIG_SYSCTL
-if [ "$CONFIG_PROC_FS" = "y" ]; then
- choice 'Kernel core (/proc/kcore) format' \
- "ELF CONFIG_KCORE_ELF \
- A.OUT CONFIG_KCORE_AOUT" ELF
-fi
-tristate 'Kernel support for a.out binaries' CONFIG_BINFMT_AOUT
-bool 'Kernel support for ELF binaries' CONFIG_BINFMT_ELF
-tristate 'Kernel support for MISC binaries' CONFIG_BINFMT_MISC
-bool 'Select task to kill on out of memory condition' CONFIG_OOM_KILLER
-
-endmenu
-
-if [ "$CONFIG_XEN_PHYSDEV_ACCESS" = "y" ]; then
- source drivers/mtd/Config.in
-
- source drivers/parport/Config.in
-
- source drivers/pnp/Config.in
-
- source drivers/block/Config.in
-
- source drivers/md/Config.in
-fi
-
-if [ "$CONFIG_NET" = "y" ]; then
- source net/Config.in
-fi
-
-if [ "$CONFIG_XEN_PHYSDEV_ACCESS" = "y" ]; then
- mainmenu_option next_comment
- comment 'ATA/IDE/MFM/RLL support'
-
- tristate 'ATA/IDE/MFM/RLL support' CONFIG_IDE
-
- if [ "$CONFIG_IDE" != "n" ]; then
- source drivers/ide/Config.in
- else
- define_bool CONFIG_BLK_DEV_HD n
- fi
- endmenu
-fi
-
-mainmenu_option next_comment
-comment 'SCSI support'
-
-tristate 'SCSI support' CONFIG_SCSI
-
-if [ "$CONFIG_SCSI" != "n" ]; then
- source drivers/scsi/Config.in
-fi
-endmenu
-
-if [ "$CONFIG_XEN_PHYSDEV_ACCESS" = "y" ]; then
- source drivers/message/fusion/Config.in
-
- source drivers/ieee1394/Config.in
-
- source drivers/message/i2o/Config.in
-
- if [ "$CONFIG_NET" = "y" ]; then
- mainmenu_option next_comment
- comment 'Network device support'
-
- bool 'Network device support' CONFIG_NETDEVICES
- if [ "$CONFIG_NETDEVICES" = "y" ]; then
- source drivers/net/Config.in
- if [ "$CONFIG_ATM" = "y" -o "$CONFIG_ATM" = "m" ]; then
- source drivers/atm/Config.in
- fi
- fi
- endmenu
- fi
-
- source net/ax25/Config.in
-
- source net/irda/Config.in
-
- mainmenu_option next_comment
- comment 'ISDN subsystem'
- if [ "$CONFIG_NET" != "n" ]; then
- tristate 'ISDN support' CONFIG_ISDN
- if [ "$CONFIG_ISDN" != "n" ]; then
- source drivers/isdn/Config.in
- fi
- fi
- endmenu
-
- if [ "$CONFIG_ISA" = "y" ]; then
- mainmenu_option next_comment
- comment 'Old CD-ROM drivers (not SCSI, not IDE)'
-
- bool 'Support non-SCSI/IDE/ATAPI CDROM drives' CONFIG_CD_NO_IDESCSI
- if [ "$CONFIG_CD_NO_IDESCSI" != "n" ]; then
- source drivers/cdrom/Config.in
- fi
- endmenu
- fi
-
- #
- # input before char - char/joystick depends on it. As does USB.
- #
- source drivers/input/Config.in
-else
- #
- # Block device driver configuration
- #
- mainmenu_option next_comment
- comment 'Block devices'
- tristate 'Loopback device support' CONFIG_BLK_DEV_LOOP
- dep_tristate 'Network block device support' CONFIG_BLK_DEV_NBD $CONFIG_NET
- tristate 'RAM disk support' CONFIG_BLK_DEV_RAM
- if [ "$CONFIG_BLK_DEV_RAM" = "y" -o "$CONFIG_BLK_DEV_RAM" = "m" ]; then
- int ' Default RAM disk size' CONFIG_BLK_DEV_RAM_SIZE 4096
- fi
- dep_bool ' Initial RAM disk (initrd) support' CONFIG_BLK_DEV_INITRD
$CONFIG_BLK_DEV_RAM
- bool 'Per partition statistics in /proc/partitions' CONFIG_BLK_STATS
- define_bool CONFIG_BLK_DEV_HD n
- endmenu
-fi
-
-source drivers/char/Config.in
-
-if [ "$CONFIG_XEN_PHYSDEV_ACCESS" = "y" -o "$CONFIG_XEN_USB_FRONTEND" = "y" ];
then
- source drivers/media/Config.in
-fi
-
-source fs/Config.in
-
-mainmenu_option next_comment
-comment 'Console drivers'
-
-define_bool CONFIG_XEN_CONSOLE y
-
-if [ "$CONFIG_VT" = "y" ]; then
- bool 'VGA text console' CONFIG_VGA_CONSOLE
- bool 'Dummy console' CONFIG_DUMMY_CONSOLE
- if [ "$CONFIG_XEN_PHYSDEV_ACCESS" = "y" ]; then
- bool 'Video mode selection support' CONFIG_VIDEO_SELECT
- if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
- tristate 'MDA text console (dual-headed) (EXPERIMENTAL)'
CONFIG_MDA_CONSOLE
- source drivers/video/Config.in
- fi
- fi
-fi
-endmenu
-
-if [ "$CONFIG_XEN_PHYSDEV_ACCESS" = "y" ]; then
- mainmenu_option next_comment
- comment 'Sound'
-
- tristate 'Sound card support' CONFIG_SOUND
- if [ "$CONFIG_SOUND" != "n" ]; then
- source drivers/sound/Config.in
- fi
- endmenu
-fi
-
-if [ "$CONFIG_XEN_PHYSDEV_ACCESS" = "y" -o "$CONFIG_XEN_USB_FRONTEND" = "y" ];
then
- if [ "$CONFIG_XEN_USB_FRONTEND" = "y" -o "$CONFIG_XEN_USB_BACKEND" = "y" ];
then
- define_bool CONFIG_USB y
- fi
- source drivers/usb/Config.in
-fi
-
-if [ "$CONFIG_XEN_PHYSDEV_ACCESS" = "y" ]; then
- source net/bluetooth/Config.in
-fi
-
-mainmenu_option next_comment
-comment 'Kernel hacking'
-
-bool 'Kernel debugging' CONFIG_DEBUG_KERNEL
-if [ "$CONFIG_DEBUG_KERNEL" != "n" ]; then
- bool ' Check for stack overflows' CONFIG_DEBUG_STACKOVERFLOW
- bool ' Debug high memory support' CONFIG_DEBUG_HIGHMEM
- bool ' Debug memory allocations' CONFIG_DEBUG_SLAB
- bool ' Memory mapped I/O debugging' CONFIG_DEBUG_IOVIRT
- bool ' Magic SysRq key' CONFIG_MAGIC_SYSRQ
- bool ' Spinlock debugging' CONFIG_DEBUG_SPINLOCK
- bool ' Verbose BUG() reporting (adds 70K)' CONFIG_DEBUG_BUGVERBOSE
- bool ' Load all symbols for debugging' CONFIG_KALLSYMS
- bool ' Compile the kernel with frame pointers' CONFIG_FRAME_POINTER
-fi
-
-int 'Kernel messages buffer length shift (0 = default)' CONFIG_LOG_BUF_SHIFT 0
-
-endmenu
-
-source crypto/Config.in
-source lib/Config.in
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/defconfig-xen0
--- a/linux-2.4.30-xen-sparse/arch/xen/defconfig-xen0 Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,927 +0,0 @@
-#
-# Automatically generated by make menuconfig: don't edit
-#
-CONFIG_XEN=y
-CONFIG_X86=y
-CONFIG_ISA=y
-# CONFIG_SBUS is not set
-CONFIG_UID16=y
-
-#
-# Xen
-#
-CONFIG_XEN_PRIVILEGED_GUEST=y
-CONFIG_XEN_PHYSDEV_ACCESS=y
-# CONFIG_XEN_USB_BACKEND is not set
-CONFIG_XEN_SCRUB_PAGES=y
-CONFIG_XEN_NETDEV_FRONTEND=y
-CONFIG_XEN_BLKDEV_FRONTEND=y
-CONFIG_XEN_BLKDEV_GRANT=y
-# CONFIG_XEN_USB_FRONTEND is not set
-CONFIG_NO_IDLE_HZ=y
-CONFIG_FOREIGN_PAGES=y
-
-#
-# Code maturity level options
-#
-CONFIG_EXPERIMENTAL=y
-
-#
-# Loadable module support
-#
-CONFIG_MODULES=y
-CONFIG_MODVERSIONS=y
-CONFIG_KMOD=y
-
-#
-# Processor type and features
-#
-CONFIG_M686=y
-# CONFIG_MPENTIUMIII is not set
-# CONFIG_MPENTIUM4 is not set
-# CONFIG_MK7 is not set
-# CONFIG_MK8 is not set
-# CONFIG_MVIAC3_2 is not set
-CONFIG_X86_WP_WORKS_OK=y
-CONFIG_X86_INVLPG=y
-CONFIG_X86_CMPXCHG=y
-CONFIG_X86_XADD=y
-CONFIG_X86_BSWAP=y
-CONFIG_X86_POPAD_OK=y
-# CONFIG_RWSEM_GENERIC_SPINLOCK is not set
-CONFIG_RWSEM_XCHGADD_ALGORITHM=y
-CONFIG_X86_GOOD_APIC=y
-CONFIG_X86_PGE=y
-CONFIG_X86_USE_PPRO_CHECKSUM=y
-CONFIG_X86_TSC=y
-CONFIG_X86_L1_CACHE_SHIFT=5
-CONFIG_NOHIGHMEM=y
-# CONFIG_HIGHMEM4G is not set
-CONFIG_FORCE_MAX_ZONEORDER=11
-
-#
-# General setup
-#
-CONFIG_NET=y
-CONFIG_PCI=y
-CONFIG_PCI_NAMES=y
-CONFIG_HOTPLUG=y
-
-#
-# PCMCIA/CardBus support
-#
-# CONFIG_PCMCIA is not set
-
-#
-# PCI Hotplug Support
-#
-# CONFIG_HOTPLUG_PCI is not set
-# CONFIG_HOTPLUG_PCI_COMPAQ is not set
-# CONFIG_HOTPLUG_PCI_COMPAQ_NVRAM is not set
-# CONFIG_HOTPLUG_PCI_SHPC is not set
-# CONFIG_HOTPLUG_PCI_SHPC_POLL_EVENT_MODE is not set
-# CONFIG_HOTPLUG_PCI_PCIE is not set
-# CONFIG_HOTPLUG_PCI_PCIE_POLL_EVENT_MODE is not set
-CONFIG_SYSVIPC=y
-# CONFIG_BSD_PROCESS_ACCT is not set
-CONFIG_SYSCTL=y
-CONFIG_KCORE_ELF=y
-# CONFIG_KCORE_AOUT is not set
-CONFIG_BINFMT_AOUT=y
-CONFIG_BINFMT_ELF=y
-# CONFIG_BINFMT_MISC is not set
-# CONFIG_OOM_KILLER is not set
-
-#
-# Memory Technology Devices (MTD)
-#
-# CONFIG_MTD is not set
-
-#
-# Parallel port support
-#
-# CONFIG_PARPORT is not set
-
-#
-# Plug and Play configuration
-#
-CONFIG_PNP=y
-# CONFIG_ISAPNP is not set
-
-#
-# Block devices
-#
-# CONFIG_BLK_DEV_FD is not set
-# CONFIG_BLK_DEV_XD is not set
-# CONFIG_PARIDE is not set
-# CONFIG_BLK_CPQ_DA is not set
-# CONFIG_BLK_CPQ_CISS_DA is not set
-# CONFIG_CISS_SCSI_TAPE is not set
-# CONFIG_CISS_MONITOR_THREAD is not set
-# CONFIG_BLK_DEV_DAC960 is not set
-# CONFIG_BLK_DEV_UMEM is not set
-# CONFIG_BLK_DEV_SX8 is not set
-CONFIG_BLK_DEV_LOOP=y
-CONFIG_BLK_DEV_NBD=y
-CONFIG_BLK_DEV_RAM=y
-CONFIG_BLK_DEV_RAM_SIZE=4096
-CONFIG_BLK_DEV_INITRD=y
-# CONFIG_BLK_STATS is not set
-
-#
-# Multi-device support (RAID and LVM)
-#
-CONFIG_MD=y
-CONFIG_BLK_DEV_MD=y
-CONFIG_MD_LINEAR=y
-# CONFIG_MD_RAID0 is not set
-CONFIG_MD_RAID1=y
-# CONFIG_MD_RAID5 is not set
-# CONFIG_MD_MULTIPATH is not set
-CONFIG_BLK_DEV_LVM=y
-
-#
-# Networking options
-#
-CONFIG_PACKET=y
-CONFIG_PACKET_MMAP=y
-# CONFIG_NETLINK_DEV is not set
-CONFIG_NETFILTER=y
-# CONFIG_NETFILTER_DEBUG is not set
-CONFIG_FILTER=y
-CONFIG_UNIX=y
-CONFIG_INET=y
-# CONFIG_IP_MULTICAST is not set
-# CONFIG_IP_ADVANCED_ROUTER is not set
-CONFIG_IP_PNP=y
-CONFIG_IP_PNP_DHCP=y
-# CONFIG_IP_PNP_BOOTP is not set
-# CONFIG_IP_PNP_RARP is not set
-# CONFIG_NET_IPIP is not set
-# CONFIG_NET_IPGRE is not set
-# CONFIG_ARPD is not set
-# CONFIG_INET_ECN is not set
-# CONFIG_SYN_COOKIES is not set
-
-#
-# IP: Netfilter Configuration
-#
-CONFIG_IP_NF_CONNTRACK=m
-CONFIG_IP_NF_FTP=m
-# CONFIG_IP_NF_AMANDA is not set
-CONFIG_IP_NF_TFTP=m
-CONFIG_IP_NF_IRC=m
-# CONFIG_IP_NF_QUEUE is not set
-CONFIG_IP_NF_IPTABLES=y
-# CONFIG_IP_NF_MATCH_LIMIT is not set
-# CONFIG_IP_NF_MATCH_MAC is not set
-# CONFIG_IP_NF_MATCH_PKTTYPE is not set
-# CONFIG_IP_NF_MATCH_MARK is not set
-# CONFIG_IP_NF_MATCH_MULTIPORT is not set
-# CONFIG_IP_NF_MATCH_TOS is not set
-# CONFIG_IP_NF_MATCH_RECENT is not set
-# CONFIG_IP_NF_MATCH_ECN is not set
-# CONFIG_IP_NF_MATCH_DSCP is not set
-# CONFIG_IP_NF_MATCH_AH_ESP is not set
-# CONFIG_IP_NF_MATCH_LENGTH is not set
-# CONFIG_IP_NF_MATCH_TTL is not set
-# CONFIG_IP_NF_MATCH_TCPMSS is not set
-# CONFIG_IP_NF_MATCH_HELPER is not set
-CONFIG_IP_NF_MATCH_STATE=m
-CONFIG_IP_NF_MATCH_CONNTRACK=m
-# CONFIG_IP_NF_MATCH_UNCLEAN is not set
-# CONFIG_IP_NF_MATCH_OWNER is not set
-CONFIG_IP_NF_MATCH_PHYSDEV=y
-CONFIG_IP_NF_FILTER=y
-CONFIG_IP_NF_TARGET_REJECT=y
-# CONFIG_IP_NF_TARGET_MIRROR is not set
-CONFIG_IP_NF_NAT=m
-CONFIG_IP_NF_NAT_NEEDED=y
-CONFIG_IP_NF_TARGET_MASQUERADE=m
-CONFIG_IP_NF_TARGET_REDIRECT=m
-# CONFIG_IP_NF_NAT_SNMP_BASIC is not set
-CONFIG_IP_NF_NAT_IRC=m
-CONFIG_IP_NF_NAT_FTP=m
-CONFIG_IP_NF_NAT_TFTP=m
-# CONFIG_IP_NF_MANGLE is not set
-CONFIG_IP_NF_TARGET_LOG=y
-CONFIG_IP_NF_TARGET_ULOG=y
-# CONFIG_IP_NF_TARGET_TCPMSS is not set
-# CONFIG_IP_NF_ARPTABLES is not set
-
-#
-# IP: Virtual Server Configuration
-#
-# CONFIG_IP_VS is not set
-# CONFIG_IPV6 is not set
-# CONFIG_KHTTPD is not set
-
-#
-# SCTP Configuration (EXPERIMENTAL)
-#
-# CONFIG_IP_SCTP is not set
-# CONFIG_ATM is not set
-CONFIG_VLAN_8021Q=y
-# CONFIG_IPX is not set
-# CONFIG_ATALK is not set
-# CONFIG_DECNET is not set
-CONFIG_BRIDGE=y
-CONFIG_BRIDGE_NF_EBTABLES=m
-CONFIG_BRIDGE_EBT_T_FILTER=m
-CONFIG_BRIDGE_EBT_T_NAT=m
-CONFIG_BRIDGE_EBT_BROUTE=m
-CONFIG_BRIDGE_EBT_LOG=m
-CONFIG_BRIDGE_EBT_IPF=m
-CONFIG_BRIDGE_EBT_ARPF=m
-CONFIG_BRIDGE_EBT_AMONG=m
-CONFIG_BRIDGE_EBT_LIMIT=m
-CONFIG_BRIDGE_EBT_VLANF=m
-CONFIG_BRIDGE_EBT_802_3=m
-CONFIG_BRIDGE_EBT_PKTTYPE=m
-CONFIG_BRIDGE_EBT_STP=m
-CONFIG_BRIDGE_EBT_MARKF=m
-CONFIG_BRIDGE_EBT_ARPREPLY=m
-CONFIG_BRIDGE_EBT_SNAT=m
-CONFIG_BRIDGE_EBT_DNAT=m
-CONFIG_BRIDGE_EBT_REDIRECT=m
-CONFIG_BRIDGE_EBT_MARK_T=m
-# CONFIG_X25 is not set
-# CONFIG_LAPB is not set
-# CONFIG_LLC is not set
-# CONFIG_NET_DIVERT is not set
-# CONFIG_ECONET is not set
-# CONFIG_WAN_ROUTER is not set
-# CONFIG_NET_FASTROUTE is not set
-# CONFIG_NET_HW_FLOWCONTROL is not set
-
-#
-# QoS and/or fair queueing
-#
-# CONFIG_NET_SCHED is not set
-
-#
-# Network testing
-#
-# CONFIG_NET_PKTGEN is not set
-
-#
-# ATA/IDE/MFM/RLL support
-#
-CONFIG_IDE=y
-
-#
-# IDE, ATA and ATAPI Block devices
-#
-CONFIG_BLK_DEV_IDE=y
-# CONFIG_BLK_DEV_HD_IDE is not set
-# CONFIG_BLK_DEV_HD is not set
-# CONFIG_BLK_DEV_IDE_SATA is not set
-CONFIG_BLK_DEV_IDEDISK=y
-CONFIG_IDEDISK_MULTI_MODE=y
-CONFIG_IDEDISK_STROKE=y
-# CONFIG_BLK_DEV_IDECS is not set
-# CONFIG_BLK_DEV_DELKIN is not set
-CONFIG_BLK_DEV_IDECD=y
-CONFIG_BLK_DEV_IDETAPE=y
-CONFIG_BLK_DEV_IDEFLOPPY=y
-CONFIG_BLK_DEV_IDESCSI=y
-CONFIG_IDE_TASK_IOCTL=y
-CONFIG_BLK_DEV_CMD640=y
-CONFIG_BLK_DEV_CMD640_ENHANCED=y
-# CONFIG_BLK_DEV_ISAPNP is not set
-CONFIG_BLK_DEV_IDEPCI=y
-CONFIG_BLK_DEV_GENERIC=y
-CONFIG_IDEPCI_SHARE_IRQ=y
-CONFIG_BLK_DEV_IDEDMA_PCI=y
-CONFIG_BLK_DEV_OFFBOARD=y
-# CONFIG_BLK_DEV_IDEDMA_FORCED is not set
-CONFIG_IDEDMA_PCI_AUTO=y
-# CONFIG_IDEDMA_ONLYDISK is not set
-CONFIG_BLK_DEV_IDEDMA=y
-# CONFIG_IDEDMA_PCI_WIP is not set
-CONFIG_BLK_DEV_ADMA100=y
-CONFIG_BLK_DEV_AEC62XX=y
-CONFIG_BLK_DEV_ALI15X3=y
-CONFIG_WDC_ALI15X3=y
-CONFIG_BLK_DEV_AMD74XX=y
-CONFIG_AMD74XX_OVERRIDE=y
-# CONFIG_BLK_DEV_ATIIXP is not set
-CONFIG_BLK_DEV_CMD64X=y
-CONFIG_BLK_DEV_TRIFLEX=y
-CONFIG_BLK_DEV_CY82C693=y
-CONFIG_BLK_DEV_CS5530=y
-CONFIG_BLK_DEV_HPT34X=y
-# CONFIG_HPT34X_AUTODMA is not set
-CONFIG_BLK_DEV_HPT366=y
-CONFIG_BLK_DEV_PIIX=y
-CONFIG_BLK_DEV_NS87415=y
-# CONFIG_BLK_DEV_OPTI621 is not set
-CONFIG_BLK_DEV_PDC202XX_OLD=y
-CONFIG_PDC202XX_BURST=y
-CONFIG_BLK_DEV_PDC202XX_NEW=y
-CONFIG_PDC202XX_FORCE=y
-CONFIG_BLK_DEV_RZ1000=y
-CONFIG_BLK_DEV_SC1200=y
-CONFIG_BLK_DEV_SVWKS=y
-CONFIG_BLK_DEV_SIIMAGE=y
-CONFIG_BLK_DEV_SIS5513=y
-CONFIG_BLK_DEV_SLC90E66=y
-CONFIG_BLK_DEV_TRM290=y
-CONFIG_BLK_DEV_VIA82CXXX=y
-CONFIG_IDE_CHIPSETS=y
-# CONFIG_BLK_DEV_4DRIVES is not set
-# CONFIG_BLK_DEV_ALI14XX is not set
-# CONFIG_BLK_DEV_DTC2278 is not set
-# CONFIG_BLK_DEV_HT6560B is not set
-# CONFIG_BLK_DEV_PDC4030 is not set
-# CONFIG_BLK_DEV_QD65XX is not set
-# CONFIG_BLK_DEV_UMC8672 is not set
-CONFIG_IDEDMA_AUTO=y
-# CONFIG_IDEDMA_IVB is not set
-# CONFIG_DMA_NONPCI is not set
-CONFIG_BLK_DEV_PDC202XX=y
-# CONFIG_BLK_DEV_ATARAID is not set
-# CONFIG_BLK_DEV_ATARAID_PDC is not set
-# CONFIG_BLK_DEV_ATARAID_HPT is not set
-# CONFIG_BLK_DEV_ATARAID_MEDLEY is not set
-# CONFIG_BLK_DEV_ATARAID_SII is not set
-
-#
-# SCSI support
-#
-CONFIG_SCSI=y
-CONFIG_BLK_DEV_SD=y
-CONFIG_SD_EXTRA_DEVS=40
-# CONFIG_CHR_DEV_ST is not set
-# CONFIG_CHR_DEV_OSST is not set
-# CONFIG_BLK_DEV_SR is not set
-CONFIG_CHR_DEV_SG=y
-# CONFIG_SCSI_DEBUG_QUEUES is not set
-# CONFIG_SCSI_MULTI_LUN is not set
-# CONFIG_SCSI_CONSTANTS is not set
-# CONFIG_SCSI_LOGGING is not set
-
-#
-# SCSI low-level drivers
-#
-# CONFIG_BLK_DEV_3W_XXXX_RAID is not set
-# CONFIG_SCSI_7000FASST is not set
-# CONFIG_SCSI_ACARD is not set
-# CONFIG_SCSI_AHA152X is not set
-# CONFIG_SCSI_AHA1542 is not set
-# CONFIG_SCSI_AHA1740 is not set
-CONFIG_SCSI_AACRAID=y
-CONFIG_SCSI_AIC7XXX=y
-CONFIG_AIC7XXX_CMDS_PER_DEVICE=32
-CONFIG_AIC7XXX_RESET_DELAY_MS=15000
-# CONFIG_AIC7XXX_PROBE_EISA_VL is not set
-# CONFIG_AIC7XXX_BUILD_FIRMWARE is not set
-# CONFIG_AIC7XXX_DEBUG_ENABLE is not set
-CONFIG_AIC7XXX_DEBUG_MASK=0
-# CONFIG_AIC7XXX_REG_PRETTY_PRINT is not set
-CONFIG_SCSI_AIC79XX=y
-CONFIG_AIC79XX_CMDS_PER_DEVICE=32
-CONFIG_AIC79XX_RESET_DELAY_MS=15000
-# CONFIG_AIC79XX_BUILD_FIRMWARE is not set
-# CONFIG_AIC79XX_ENABLE_RD_STRM is not set
-# CONFIG_AIC79XX_DEBUG_ENABLE is not set
-CONFIG_AIC79XX_DEBUG_MASK=0
-# CONFIG_AIC79XX_REG_PRETTY_PRINT is not set
-# CONFIG_SCSI_DPT_I2O is not set
-# CONFIG_SCSI_ADVANSYS is not set
-# CONFIG_SCSI_IN2000 is not set
-# CONFIG_SCSI_AM53C974 is not set
-CONFIG_SCSI_MEGARAID=y
-# CONFIG_SCSI_MEGARAID2 is not set
-CONFIG_SCSI_SATA=y
-# CONFIG_SCSI_SATA_AHCI is not set
-# CONFIG_SCSI_SATA_SVW is not set
-CONFIG_SCSI_ATA_PIIX=y
-# CONFIG_SCSI_SATA_NV is not set
-# CONFIG_SCSI_SATA_QSTOR is not set
-CONFIG_SCSI_SATA_PROMISE=y
-CONFIG_SCSI_SATA_SX4=y
-CONFIG_SCSI_SATA_SIL=y
-CONFIG_SCSI_SATA_SIS=y
-# CONFIG_SCSI_SATA_ULI is not set
-CONFIG_SCSI_SATA_VIA=y
-CONFIG_SCSI_SATA_VITESSE=y
-CONFIG_SCSI_BUSLOGIC=y
-# CONFIG_SCSI_OMIT_FLASHPOINT is not set
-# CONFIG_SCSI_CPQFCTS is not set
-# CONFIG_SCSI_DMX3191D is not set
-# CONFIG_SCSI_DTC3280 is not set
-# CONFIG_SCSI_EATA is not set
-# CONFIG_SCSI_EATA_DMA is not set
-# CONFIG_SCSI_EATA_PIO is not set
-# CONFIG_SCSI_FUTURE_DOMAIN is not set
-# CONFIG_SCSI_GDTH is not set
-# CONFIG_SCSI_GENERIC_NCR5380 is not set
-# CONFIG_SCSI_IPS is not set
-# CONFIG_SCSI_INITIO is not set
-# CONFIG_SCSI_INIA100 is not set
-# CONFIG_SCSI_NCR53C406A is not set
-# CONFIG_SCSI_NCR53C7xx is not set
-CONFIG_SCSI_SYM53C8XX_2=y
-CONFIG_SCSI_SYM53C8XX_DMA_ADDRESSING_MODE=1
-CONFIG_SCSI_SYM53C8XX_DEFAULT_TAGS=16
-CONFIG_SCSI_SYM53C8XX_MAX_TAGS=64
-# CONFIG_SCSI_SYM53C8XX_IOMAPPED is not set
-# CONFIG_SCSI_PAS16 is not set
-# CONFIG_SCSI_PCI2000 is not set
-# CONFIG_SCSI_PCI2220I is not set
-# CONFIG_SCSI_PSI240I is not set
-# CONFIG_SCSI_QLOGIC_FAS is not set
-# CONFIG_SCSI_QLOGIC_ISP is not set
-# CONFIG_SCSI_QLOGIC_FC is not set
-# CONFIG_SCSI_QLOGIC_1280 is not set
-# CONFIG_SCSI_SEAGATE is not set
-# CONFIG_SCSI_SIM710 is not set
-# CONFIG_SCSI_SYM53C416 is not set
-# CONFIG_SCSI_DC390T is not set
-# CONFIG_SCSI_T128 is not set
-# CONFIG_SCSI_U14_34F is not set
-# CONFIG_SCSI_ULTRASTOR is not set
-# CONFIG_SCSI_NSP32 is not set
-# CONFIG_SCSI_DEBUG is not set
-
-#
-# Fusion MPT device support
-#
-# CONFIG_FUSION is not set
-# CONFIG_FUSION_BOOT is not set
-# CONFIG_FUSION_ISENSE is not set
-# CONFIG_FUSION_CTL is not set
-# CONFIG_FUSION_LAN is not set
-
-#
-# IEEE 1394 (FireWire) support (EXPERIMENTAL)
-#
-# CONFIG_IEEE1394 is not set
-
-#
-# I2O device support
-#
-# CONFIG_I2O is not set
-# CONFIG_I2O_PCI is not set
-# CONFIG_I2O_BLOCK is not set
-# CONFIG_I2O_LAN is not set
-# CONFIG_I2O_SCSI is not set
-# CONFIG_I2O_PROC is not set
-
-#
-# Network device support
-#
-CONFIG_NETDEVICES=y
-
-#
-# ARCnet devices
-#
-# CONFIG_ARCNET is not set
-# CONFIG_DUMMY is not set
-# CONFIG_BONDING is not set
-# CONFIG_EQUALIZER is not set
-# CONFIG_TUN is not set
-# CONFIG_ETHERTAP is not set
-
-#
-# Ethernet (10 or 100Mbit)
-#
-CONFIG_NET_ETHERNET=y
-# CONFIG_SUNLANCE is not set
-# CONFIG_HAPPYMEAL is not set
-# CONFIG_SUNBMAC is not set
-# CONFIG_SUNQE is not set
-# CONFIG_SUNGEM is not set
-CONFIG_NET_VENDOR_3COM=y
-# CONFIG_EL1 is not set
-# CONFIG_EL2 is not set
-# CONFIG_ELPLUS is not set
-# CONFIG_EL16 is not set
-# CONFIG_EL3 is not set
-# CONFIG_3C515 is not set
-# CONFIG_ELMC is not set
-# CONFIG_ELMC_II is not set
-CONFIG_VORTEX=y
-# CONFIG_TYPHOON is not set
-# CONFIG_LANCE is not set
-# CONFIG_NET_VENDOR_SMC is not set
-# CONFIG_NET_VENDOR_RACAL is not set
-# CONFIG_AT1700 is not set
-# CONFIG_DEPCA is not set
-# CONFIG_HP100 is not set
-# CONFIG_NET_ISA is not set
-CONFIG_NET_PCI=y
-CONFIG_PCNET32=y
-# CONFIG_AMD8111_ETH is not set
-# CONFIG_ADAPTEC_STARFIRE is not set
-# CONFIG_AC3200 is not set
-# CONFIG_APRICOT is not set
-# CONFIG_B44 is not set
-# CONFIG_CS89x0 is not set
-# CONFIG_TULIP is not set
-# CONFIG_DE4X5 is not set
-# CONFIG_DGRS is not set
-# CONFIG_DM9102 is not set
-# CONFIG_EEPRO100 is not set
-# CONFIG_EEPRO100_PIO is not set
-CONFIG_E100=y
-# CONFIG_LNE390 is not set
-# CONFIG_FEALNX is not set
-# CONFIG_NATSEMI is not set
-CONFIG_NE2K_PCI=y
-# CONFIG_FORCEDETH is not set
-# CONFIG_NE3210 is not set
-# CONFIG_ES3210 is not set
-# CONFIG_8139CP is not set
-# CONFIG_8139TOO is not set
-# CONFIG_8139TOO_PIO is not set
-# CONFIG_8139TOO_TUNE_TWISTER is not set
-# CONFIG_8139TOO_8129 is not set
-# CONFIG_8139_OLD_RX_RESET is not set
-# CONFIG_SIS900 is not set
-# CONFIG_EPIC100 is not set
-# CONFIG_SUNDANCE is not set
-# CONFIG_SUNDANCE_MMIO is not set
-# CONFIG_TLAN is not set
-# CONFIG_VIA_RHINE is not set
-# CONFIG_VIA_RHINE_MMIO is not set
-# CONFIG_WINBOND_840 is not set
-# CONFIG_NET_POCKET is not set
-
-#
-# Ethernet (1000 Mbit)
-#
-# CONFIG_ACENIC is not set
-# CONFIG_DL2K is not set
-CONFIG_E1000=y
-# CONFIG_E1000_NAPI is not set
-# CONFIG_MYRI_SBUS is not set
-# CONFIG_NS83820 is not set
-# CONFIG_HAMACHI is not set
-# CONFIG_YELLOWFIN is not set
-# CONFIG_R8169 is not set
-# CONFIG_SK98LIN is not set
-CONFIG_TIGON3=y
-# CONFIG_FDDI is not set
-# CONFIG_HIPPI is not set
-# CONFIG_PLIP is not set
-# CONFIG_PPP is not set
-# CONFIG_SLIP is not set
-
-#
-# Wireless LAN (non-hamradio)
-#
-# CONFIG_NET_RADIO is not set
-
-#
-# Token Ring devices
-#
-# CONFIG_TR is not set
-# CONFIG_NET_FC is not set
-# CONFIG_RCPCI is not set
-# CONFIG_SHAPER is not set
-
-#
-# Wan interfaces
-#
-# CONFIG_WAN is not set
-
-#
-# Amateur Radio support
-#
-# CONFIG_HAMRADIO is not set
-
-#
-# IrDA (infrared) support
-#
-# CONFIG_IRDA is not set
-
-#
-# ISDN subsystem
-#
-# CONFIG_ISDN is not set
-
-#
-# Old CD-ROM drivers (not SCSI, not IDE)
-#
-# CONFIG_CD_NO_IDESCSI is not set
-
-#
-# Input core support
-#
-# CONFIG_INPUT is not set
-# CONFIG_INPUT_KEYBDEV is not set
-# CONFIG_INPUT_MOUSEDEV is not set
-# CONFIG_INPUT_JOYDEV is not set
-# CONFIG_INPUT_EVDEV is not set
-# CONFIG_INPUT_UINPUT is not set
-
-#
-# Character devices
-#
-CONFIG_VT=y
-CONFIG_VT_CONSOLE=y
-# CONFIG_SERIAL is not set
-# CONFIG_SERIAL_EXTENDED is not set
-# CONFIG_SERIAL_NONSTANDARD is not set
-CONFIG_UNIX98_PTYS=y
-CONFIG_UNIX98_PTY_COUNT=256
-
-#
-# I2C support
-#
-# CONFIG_I2C is not set
-
-#
-# Mice
-#
-# CONFIG_BUSMOUSE is not set
-CONFIG_MOUSE=y
-CONFIG_PSMOUSE=y
-# CONFIG_82C710_MOUSE is not set
-# CONFIG_PC110_PAD is not set
-# CONFIG_MK712_MOUSE is not set
-
-#
-# Joysticks
-#
-# CONFIG_INPUT_GAMEPORT is not set
-# CONFIG_QIC02_TAPE is not set
-# CONFIG_IPMI_HANDLER is not set
-# CONFIG_IPMI_PANIC_EVENT is not set
-# CONFIG_IPMI_DEVICE_INTERFACE is not set
-# CONFIG_IPMI_KCS is not set
-# CONFIG_IPMI_WATCHDOG is not set
-
-#
-# Watchdog Cards
-#
-# CONFIG_WATCHDOG is not set
-# CONFIG_SCx200 is not set
-# CONFIG_SCx200_GPIO is not set
-# CONFIG_AMD_RNG is not set
-# CONFIG_INTEL_RNG is not set
-# CONFIG_HW_RANDOM is not set
-# CONFIG_AMD_PM768 is not set
-# CONFIG_NVRAM is not set
-# CONFIG_RTC is not set
-# CONFIG_DTLK is not set
-# CONFIG_R3964 is not set
-# CONFIG_APPLICOM is not set
-# CONFIG_SONYPI is not set
-
-#
-# Ftape, the floppy tape device driver
-#
-# CONFIG_FTAPE is not set
-# CONFIG_AGP is not set
-
-#
-# Direct Rendering Manager (XFree86 DRI support)
-#
-# CONFIG_DRM is not set
-# CONFIG_MWAVE is not set
-# CONFIG_OBMOUSE is not set
-
-#
-# Multimedia devices
-#
-# CONFIG_VIDEO_DEV is not set
-
-#
-# File systems
-#
-# CONFIG_QUOTA is not set
-# CONFIG_QFMT_V2 is not set
-CONFIG_AUTOFS_FS=y
-CONFIG_AUTOFS4_FS=y
-# CONFIG_REISERFS_FS is not set
-# CONFIG_REISERFS_CHECK is not set
-# CONFIG_REISERFS_PROC_INFO is not set
-# CONFIG_ADFS_FS is not set
-# CONFIG_ADFS_FS_RW is not set
-# CONFIG_AFFS_FS is not set
-# CONFIG_HFS_FS is not set
-# CONFIG_HFSPLUS_FS is not set
-# CONFIG_BEFS_FS is not set
-# CONFIG_BEFS_DEBUG is not set
-# CONFIG_BFS_FS is not set
-CONFIG_EXT3_FS=y
-CONFIG_JBD=y
-# CONFIG_JBD_DEBUG is not set
-CONFIG_FAT_FS=y
-CONFIG_MSDOS_FS=y
-CONFIG_UMSDOS_FS=y
-CONFIG_VFAT_FS=y
-# CONFIG_EFS_FS is not set
-# CONFIG_JFFS_FS is not set
-# CONFIG_JFFS2_FS is not set
-# CONFIG_CRAMFS is not set
-CONFIG_TMPFS=y
-CONFIG_RAMFS=y
-CONFIG_ISO9660_FS=y
-CONFIG_JOLIET=y
-CONFIG_ZISOFS=y
-# CONFIG_JFS_FS is not set
-# CONFIG_JFS_DEBUG is not set
-# CONFIG_JFS_STATISTICS is not set
-# CONFIG_MINIX_FS is not set
-# CONFIG_VXFS_FS is not set
-# CONFIG_NTFS_FS is not set
-# CONFIG_NTFS_RW is not set
-# CONFIG_HPFS_FS is not set
-CONFIG_PROC_FS=y
-# CONFIG_DEVFS_FS is not set
-# CONFIG_DEVFS_MOUNT is not set
-# CONFIG_DEVFS_DEBUG is not set
-CONFIG_DEVPTS_FS=y
-# CONFIG_QNX4FS_FS is not set
-# CONFIG_QNX4FS_RW is not set
-# CONFIG_ROMFS_FS is not set
-CONFIG_EXT2_FS=y
-# CONFIG_SYSV_FS is not set
-# CONFIG_UDF_FS is not set
-# CONFIG_UDF_RW is not set
-# CONFIG_UFS_FS is not set
-# CONFIG_UFS_FS_WRITE is not set
-# CONFIG_XFS_FS is not set
-# CONFIG_XFS_QUOTA is not set
-# CONFIG_XFS_RT is not set
-# CONFIG_XFS_TRACE is not set
-# CONFIG_XFS_DEBUG is not set
-
-#
-# Network File Systems
-#
-# CONFIG_CODA_FS is not set
-# CONFIG_INTERMEZZO_FS is not set
-CONFIG_NFS_FS=y
-CONFIG_NFS_V3=y
-# CONFIG_NFS_DIRECTIO is not set
-CONFIG_ROOT_NFS=y
-CONFIG_NFSD=y
-CONFIG_NFSD_V3=y
-# CONFIG_NFSD_TCP is not set
-CONFIG_SUNRPC=y
-CONFIG_LOCKD=y
-CONFIG_LOCKD_V4=y
-# CONFIG_SMB_FS is not set
-# CONFIG_NCP_FS is not set
-# CONFIG_NCPFS_PACKET_SIGNING is not set
-# CONFIG_NCPFS_IOCTL_LOCKING is not set
-# CONFIG_NCPFS_STRONG is not set
-# CONFIG_NCPFS_NFS_NS is not set
-# CONFIG_NCPFS_OS2_NS is not set
-# CONFIG_NCPFS_SMALLDOS is not set
-# CONFIG_NCPFS_NLS is not set
-# CONFIG_NCPFS_EXTRAS is not set
-CONFIG_ZISOFS_FS=y
-
-#
-# Partition Types
-#
-CONFIG_PARTITION_ADVANCED=y
-# CONFIG_ACORN_PARTITION is not set
-# CONFIG_OSF_PARTITION is not set
-# CONFIG_AMIGA_PARTITION is not set
-# CONFIG_ATARI_PARTITION is not set
-# CONFIG_MAC_PARTITION is not set
-CONFIG_MSDOS_PARTITION=y
-# CONFIG_BSD_DISKLABEL is not set
-# CONFIG_MINIX_SUBPARTITION is not set
-# CONFIG_SOLARIS_X86_PARTITION is not set
-# CONFIG_UNIXWARE_DISKLABEL is not set
-# CONFIG_LDM_PARTITION is not set
-# CONFIG_SGI_PARTITION is not set
-# CONFIG_ULTRIX_PARTITION is not set
-# CONFIG_SUN_PARTITION is not set
-# CONFIG_EFI_PARTITION is not set
-# CONFIG_SMB_NLS is not set
-CONFIG_NLS=y
-
-#
-# Native Language Support
-#
-CONFIG_NLS_DEFAULT="iso8559-1"
-# CONFIG_NLS_CODEPAGE_437 is not set
-# CONFIG_NLS_CODEPAGE_737 is not set
-# CONFIG_NLS_CODEPAGE_775 is not set
-# CONFIG_NLS_CODEPAGE_850 is not set
-# CONFIG_NLS_CODEPAGE_852 is not set
-# CONFIG_NLS_CODEPAGE_855 is not set
-# CONFIG_NLS_CODEPAGE_857 is not set
-# CONFIG_NLS_CODEPAGE_860 is not set
-# CONFIG_NLS_CODEPAGE_861 is not set
-# CONFIG_NLS_CODEPAGE_862 is not set
-# CONFIG_NLS_CODEPAGE_863 is not set
-# CONFIG_NLS_CODEPAGE_864 is not set
-# CONFIG_NLS_CODEPAGE_865 is not set
-# CONFIG_NLS_CODEPAGE_866 is not set
-# CONFIG_NLS_CODEPAGE_869 is not set
-# CONFIG_NLS_CODEPAGE_936 is not set
-# CONFIG_NLS_CODEPAGE_950 is not set
-# CONFIG_NLS_CODEPAGE_932 is not set
-# CONFIG_NLS_CODEPAGE_949 is not set
-# CONFIG_NLS_CODEPAGE_874 is not set
-# CONFIG_NLS_ISO8859_8 is not set
-# CONFIG_NLS_CODEPAGE_1250 is not set
-# CONFIG_NLS_CODEPAGE_1251 is not set
-CONFIG_NLS_ISO8859_1=y
-# CONFIG_NLS_ISO8859_2 is not set
-# CONFIG_NLS_ISO8859_3 is not set
-# CONFIG_NLS_ISO8859_4 is not set
-# CONFIG_NLS_ISO8859_5 is not set
-# CONFIG_NLS_ISO8859_6 is not set
-# CONFIG_NLS_ISO8859_7 is not set
-# CONFIG_NLS_ISO8859_9 is not set
-# CONFIG_NLS_ISO8859_13 is not set
-# CONFIG_NLS_ISO8859_14 is not set
-# CONFIG_NLS_ISO8859_15 is not set
-# CONFIG_NLS_KOI8_R is not set
-# CONFIG_NLS_KOI8_U is not set
-# CONFIG_NLS_UTF8 is not set
-
-#
-# Console drivers
-#
-CONFIG_XEN_CONSOLE=y
-CONFIG_VGA_CONSOLE=y
-CONFIG_DUMMY_CONSOLE=y
-# CONFIG_VIDEO_SELECT is not set
-# CONFIG_MDA_CONSOLE is not set
-
-#
-# Frame-buffer support
-#
-# CONFIG_FB is not set
-
-#
-# Sound
-#
-# CONFIG_SOUND is not set
-
-#
-# USB support
-#
-# CONFIG_USB is not set
-
-#
-# Support for USB gadgets
-#
-# CONFIG_USB_GADGET is not set
-
-#
-# Bluetooth support
-#
-# CONFIG_BLUEZ is not set
-
-#
-# Kernel hacking
-#
-CONFIG_DEBUG_KERNEL=y
-# CONFIG_DEBUG_STACKOVERFLOW is not set
-# CONFIG_DEBUG_HIGHMEM is not set
-# CONFIG_DEBUG_SLAB is not set
-# CONFIG_DEBUG_IOVIRT is not set
-# CONFIG_MAGIC_SYSRQ is not set
-# CONFIG_DEBUG_SPINLOCK is not set
-# CONFIG_DEBUG_BUGVERBOSE is not set
-CONFIG_KALLSYMS=y
-# CONFIG_FRAME_POINTER is not set
-CONFIG_LOG_BUF_SHIFT=0
-
-#
-# Cryptographic options
-#
-CONFIG_CRYPTO=y
-CONFIG_CRYPTO_HMAC=y
-CONFIG_CRYPTO_NULL=m
-CONFIG_CRYPTO_MD4=m
-CONFIG_CRYPTO_MD5=m
-CONFIG_CRYPTO_SHA1=m
-CONFIG_CRYPTO_SHA256=m
-CONFIG_CRYPTO_SHA512=m
-# CONFIG_CRYPTO_WP512 is not set
-CONFIG_CRYPTO_DES=m
-CONFIG_CRYPTO_BLOWFISH=m
-CONFIG_CRYPTO_TWOFISH=m
-CONFIG_CRYPTO_SERPENT=m
-CONFIG_CRYPTO_AES=m
-CONFIG_CRYPTO_CAST5=m
-CONFIG_CRYPTO_CAST6=m
-# CONFIG_CRYPTO_TEA is not set
-# CONFIG_CRYPTO_KHAZAD is not set
-# CONFIG_CRYPTO_ANUBIS is not set
-CONFIG_CRYPTO_ARC4=m
-CONFIG_CRYPTO_DEFLATE=m
-# CONFIG_CRYPTO_MICHAEL_MIC is not set
-# CONFIG_CRYPTO_TEST is not set
-
-#
-# Library routines
-#
-# CONFIG_CRC32 is not set
-CONFIG_ZLIB_INFLATE=y
-CONFIG_ZLIB_DEFLATE=m
-# CONFIG_FW_LOADER is not set
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/defconfig-xenU
--- a/linux-2.4.30-xen-sparse/arch/xen/defconfig-xenU Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,562 +0,0 @@
-#
-# Automatically generated make config: don't edit
-#
-CONFIG_XEN=y
-CONFIG_X86=y
-CONFIG_ISA=y
-# CONFIG_SBUS is not set
-CONFIG_UID16=y
-
-#
-# Xen
-#
-# CONFIG_XEN_PRIVILEGED_GUEST is not set
-# CONFIG_XEN_PHYSDEV_ACCESS is not set
-CONFIG_XEN_SCRUB_PAGES=y
-CONFIG_XEN_NETDEV_FRONTEND=y
-CONFIG_XEN_BLKDEV_FRONTEND=y
-CONFIG_XEN_BLKDEV_GRANT=y
-# CONFIG_XEN_USB_FRONTEND is not set
-CONFIG_NO_IDLE_HZ=y
-# CONFIG_FOREIGN_PAGES is not set
-CONFIG_NETDEVICES=y
-# CONFIG_VT is not set
-
-#
-# Code maturity level options
-#
-CONFIG_EXPERIMENTAL=y
-
-#
-# Loadable module support
-#
-CONFIG_MODULES=y
-CONFIG_MODVERSIONS=y
-CONFIG_KMOD=y
-
-#
-# Processor type and features
-#
-CONFIG_M686=y
-# CONFIG_MPENTIUMIII is not set
-# CONFIG_MPENTIUM4 is not set
-# CONFIG_MK7 is not set
-# CONFIG_MK8 is not set
-# CONFIG_MVIAC3_2 is not set
-CONFIG_X86_WP_WORKS_OK=y
-CONFIG_X86_INVLPG=y
-CONFIG_X86_CMPXCHG=y
-CONFIG_X86_XADD=y
-CONFIG_X86_BSWAP=y
-CONFIG_X86_POPAD_OK=y
-# CONFIG_RWSEM_GENERIC_SPINLOCK is not set
-CONFIG_RWSEM_XCHGADD_ALGORITHM=y
-CONFIG_X86_GOOD_APIC=y
-CONFIG_X86_PGE=y
-CONFIG_X86_USE_PPRO_CHECKSUM=y
-CONFIG_X86_TSC=y
-CONFIG_X86_L1_CACHE_SHIFT=5
-CONFIG_NOHIGHMEM=y
-# CONFIG_HIGHMEM4G is not set
-CONFIG_FORCE_MAX_ZONEORDER=11
-
-#
-# General setup
-#
-CONFIG_NET=y
-CONFIG_SYSVIPC=y
-# CONFIG_BSD_PROCESS_ACCT is not set
-CONFIG_SYSCTL=y
-CONFIG_KCORE_ELF=y
-# CONFIG_KCORE_AOUT is not set
-CONFIG_BINFMT_AOUT=y
-CONFIG_BINFMT_ELF=y
-# CONFIG_BINFMT_MISC is not set
-# CONFIG_OOM_KILLER is not set
-
-#
-# Networking options
-#
-CONFIG_PACKET=y
-CONFIG_PACKET_MMAP=y
-# CONFIG_NETLINK_DEV is not set
-CONFIG_NETFILTER=y
-# CONFIG_NETFILTER_DEBUG is not set
-CONFIG_FILTER=y
-CONFIG_UNIX=y
-CONFIG_INET=y
-# CONFIG_IP_MULTICAST is not set
-# CONFIG_IP_ADVANCED_ROUTER is not set
-CONFIG_IP_PNP=y
-CONFIG_IP_PNP_DHCP=y
-# CONFIG_IP_PNP_BOOTP is not set
-# CONFIG_IP_PNP_RARP is not set
-# CONFIG_NET_IPIP is not set
-# CONFIG_NET_IPGRE is not set
-# CONFIG_ARPD is not set
-# CONFIG_INET_ECN is not set
-# CONFIG_SYN_COOKIES is not set
-
-#
-# IP: Netfilter Configuration
-#
-CONFIG_IP_NF_CONNTRACK=y
-CONFIG_IP_NF_FTP=y
-# CONFIG_IP_NF_AMANDA is not set
-CONFIG_IP_NF_TFTP=y
-CONFIG_IP_NF_IRC=y
-# CONFIG_IP_NF_QUEUE is not set
-CONFIG_IP_NF_IPTABLES=y
-# CONFIG_IP_NF_MATCH_LIMIT is not set
-# CONFIG_IP_NF_MATCH_MAC is not set
-# CONFIG_IP_NF_MATCH_PKTTYPE is not set
-# CONFIG_IP_NF_MATCH_MARK is not set
-# CONFIG_IP_NF_MATCH_MULTIPORT is not set
-# CONFIG_IP_NF_MATCH_TOS is not set
-# CONFIG_IP_NF_MATCH_RECENT is not set
-# CONFIG_IP_NF_MATCH_ECN is not set
-# CONFIG_IP_NF_MATCH_DSCP is not set
-# CONFIG_IP_NF_MATCH_AH_ESP is not set
-# CONFIG_IP_NF_MATCH_LENGTH is not set
-# CONFIG_IP_NF_MATCH_TTL is not set
-# CONFIG_IP_NF_MATCH_TCPMSS is not set
-# CONFIG_IP_NF_MATCH_HELPER is not set
-CONFIG_IP_NF_MATCH_STATE=y
-CONFIG_IP_NF_MATCH_CONNTRACK=y
-# CONFIG_IP_NF_MATCH_UNCLEAN is not set
-# CONFIG_IP_NF_MATCH_OWNER is not set
-CONFIG_IP_NF_FILTER=y
-CONFIG_IP_NF_TARGET_REJECT=y
-# CONFIG_IP_NF_TARGET_MIRROR is not set
-CONFIG_IP_NF_NAT=y
-CONFIG_IP_NF_NAT_NEEDED=y
-CONFIG_IP_NF_TARGET_MASQUERADE=y
-CONFIG_IP_NF_TARGET_REDIRECT=y
-# CONFIG_IP_NF_NAT_SNMP_BASIC is not set
-CONFIG_IP_NF_NAT_IRC=y
-CONFIG_IP_NF_NAT_FTP=y
-CONFIG_IP_NF_NAT_TFTP=y
-# CONFIG_IP_NF_MANGLE is not set
-CONFIG_IP_NF_TARGET_LOG=y
-CONFIG_IP_NF_TARGET_ULOG=y
-# CONFIG_IP_NF_TARGET_TCPMSS is not set
-# CONFIG_IP_NF_ARPTABLES is not set
-
-#
-# IP: Virtual Server Configuration
-#
-# CONFIG_IP_VS is not set
-# CONFIG_IPV6 is not set
-# CONFIG_KHTTPD is not set
-
-#
-# SCTP Configuration (EXPERIMENTAL)
-#
-# CONFIG_IP_SCTP is not set
-# CONFIG_ATM is not set
-CONFIG_VLAN_8021Q=y
-
-#
-#
-#
-# CONFIG_IPX is not set
-# CONFIG_ATALK is not set
-# CONFIG_DECNET is not set
-# CONFIG_BRIDGE is not set
-# CONFIG_X25 is not set
-# CONFIG_LAPB is not set
-# CONFIG_LLC is not set
-# CONFIG_NET_DIVERT is not set
-# CONFIG_ECONET is not set
-# CONFIG_WAN_ROUTER is not set
-# CONFIG_NET_FASTROUTE is not set
-# CONFIG_NET_HW_FLOWCONTROL is not set
-
-#
-# QoS and/or fair queueing
-#
-# CONFIG_NET_SCHED is not set
-
-#
-# Network testing
-#
-# CONFIG_NET_PKTGEN is not set
-
-#
-# SCSI support
-#
-CONFIG_SCSI=y
-
-#
-# SCSI support type (disk, tape, CD-ROM)
-#
-CONFIG_BLK_DEV_SD=y
-CONFIG_SD_EXTRA_DEVS=40
-# CONFIG_CHR_DEV_ST is not set
-# CONFIG_CHR_DEV_OSST is not set
-# CONFIG_BLK_DEV_SR is not set
-CONFIG_CHR_DEV_SG=y
-
-#
-# Some SCSI devices (e.g. CD jukebox) support multiple LUNs
-#
-# CONFIG_SCSI_DEBUG_QUEUES is not set
-# CONFIG_SCSI_MULTI_LUN is not set
-# CONFIG_SCSI_CONSTANTS is not set
-# CONFIG_SCSI_LOGGING is not set
-
-#
-# SCSI low-level drivers
-#
-# CONFIG_SCSI_7000FASST is not set
-# CONFIG_SCSI_ACARD is not set
-# CONFIG_SCSI_AHA152X is not set
-# CONFIG_SCSI_AHA1542 is not set
-# CONFIG_SCSI_AHA1740 is not set
-# CONFIG_SCSI_AACRAID is not set
-# CONFIG_SCSI_AIC7XXX is not set
-# CONFIG_SCSI_AIC79XX is not set
-# CONFIG_SCSI_AIC7XXX_OLD is not set
-# CONFIG_SCSI_DPT_I2O is not set
-# CONFIG_SCSI_ADVANSYS is not set
-# CONFIG_SCSI_IN2000 is not set
-# CONFIG_SCSI_AM53C974 is not set
-# CONFIG_SCSI_MEGARAID is not set
-# CONFIG_SCSI_MEGARAID2 is not set
-# CONFIG_SCSI_SATA is not set
-# CONFIG_SCSI_SATA_AHCI is not set
-# CONFIG_SCSI_SATA_SVW is not set
-# CONFIG_SCSI_ATA_PIIX is not set
-# CONFIG_SCSI_SATA_NV is not set
-# CONFIG_SCSI_SATA_QSTOR is not set
-# CONFIG_SCSI_SATA_PROMISE is not set
-# CONFIG_SCSI_SATA_SX4 is not set
-# CONFIG_SCSI_SATA_SIL is not set
-# CONFIG_SCSI_SATA_SIS is not set
-# CONFIG_SCSI_SATA_ULI is not set
-# CONFIG_SCSI_SATA_VIA is not set
-# CONFIG_SCSI_SATA_VITESSE is not set
-# CONFIG_SCSI_BUSLOGIC is not set
-# CONFIG_SCSI_DMX3191D is not set
-# CONFIG_SCSI_DTC3280 is not set
-# CONFIG_SCSI_EATA is not set
-# CONFIG_SCSI_EATA_DMA is not set
-# CONFIG_SCSI_EATA_PIO is not set
-# CONFIG_SCSI_FUTURE_DOMAIN is not set
-# CONFIG_SCSI_GDTH is not set
-# CONFIG_SCSI_GENERIC_NCR5380 is not set
-# CONFIG_SCSI_IPS is not set
-# CONFIG_SCSI_INITIO is not set
-# CONFIG_SCSI_INIA100 is not set
-# CONFIG_SCSI_PPA is not set
-# CONFIG_SCSI_IMM is not set
-# CONFIG_SCSI_NCR53C406A is not set
-# CONFIG_SCSI_NCR53C7xx is not set
-# CONFIG_SCSI_PAS16 is not set
-# CONFIG_SCSI_PCI2000 is not set
-# CONFIG_SCSI_PCI2220I is not set
-# CONFIG_SCSI_PSI240I is not set
-# CONFIG_SCSI_QLOGIC_FAS is not set
-# CONFIG_SCSI_SEAGATE is not set
-# CONFIG_SCSI_SIM710 is not set
-# CONFIG_SCSI_SYM53C416 is not set
-# CONFIG_SCSI_T128 is not set
-# CONFIG_SCSI_U14_34F is not set
-# CONFIG_SCSI_ULTRASTOR is not set
-# CONFIG_SCSI_NSP32 is not set
-# CONFIG_SCSI_DEBUG is not set
-
-#
-# Block devices
-#
-CONFIG_BLK_DEV_LOOP=y
-CONFIG_BLK_DEV_NBD=y
-CONFIG_BLK_DEV_RAM=y
-CONFIG_BLK_DEV_RAM_SIZE=4096
-CONFIG_BLK_DEV_INITRD=y
-# CONFIG_BLK_STATS is not set
-# CONFIG_BLK_DEV_HD is not set
-
-#
-# Character devices
-#
-# CONFIG_VT is not set
-# CONFIG_SERIAL is not set
-# CONFIG_SERIAL_EXTENDED is not set
-# CONFIG_SERIAL_NONSTANDARD is not set
-CONFIG_UNIX98_PTYS=y
-CONFIG_UNIX98_PTY_COUNT=256
-# CONFIG_PRINTER is not set
-# CONFIG_PPDEV is not set
-# CONFIG_TIPAR is not set
-
-#
-# I2C support
-#
-# CONFIG_I2C is not set
-
-#
-# Mice
-#
-# CONFIG_BUSMOUSE is not set
-CONFIG_MOUSE=y
-CONFIG_PSMOUSE=y
-# CONFIG_82C710_MOUSE is not set
-# CONFIG_PC110_PAD is not set
-# CONFIG_MK712_MOUSE is not set
-
-#
-# Joysticks
-#
-# CONFIG_INPUT_GAMEPORT is not set
-# CONFIG_INPUT_NS558 is not set
-# CONFIG_INPUT_LIGHTNING is not set
-# CONFIG_INPUT_PCIGAME is not set
-# CONFIG_INPUT_CS461X is not set
-# CONFIG_INPUT_EMU10K1 is not set
-# CONFIG_INPUT_SERIO is not set
-# CONFIG_INPUT_SERPORT is not set
-
-#
-# Joysticks
-#
-# CONFIG_INPUT_ANALOG is not set
-# CONFIG_INPUT_A3D is not set
-# CONFIG_INPUT_ADI is not set
-# CONFIG_INPUT_COBRA is not set
-# CONFIG_INPUT_GF2K is not set
-# CONFIG_INPUT_GRIP is not set
-# CONFIG_INPUT_INTERACT is not set
-# CONFIG_INPUT_TMDC is not set
-# CONFIG_INPUT_SIDEWINDER is not set
-# CONFIG_INPUT_IFORCE_USB is not set
-# CONFIG_INPUT_IFORCE_232 is not set
-# CONFIG_INPUT_WARRIOR is not set
-# CONFIG_INPUT_MAGELLAN is not set
-# CONFIG_INPUT_SPACEORB is not set
-# CONFIG_INPUT_SPACEBALL is not set
-# CONFIG_INPUT_STINGER is not set
-# CONFIG_INPUT_DB9 is not set
-# CONFIG_INPUT_GAMECON is not set
-# CONFIG_INPUT_TURBOGRAFX is not set
-# CONFIG_QIC02_TAPE is not set
-# CONFIG_IPMI_HANDLER is not set
-# CONFIG_IPMI_PANIC_EVENT is not set
-# CONFIG_IPMI_DEVICE_INTERFACE is not set
-# CONFIG_IPMI_KCS is not set
-# CONFIG_IPMI_WATCHDOG is not set
-
-#
-# Watchdog Cards
-#
-# CONFIG_WATCHDOG is not set
-# CONFIG_SCx200 is not set
-# CONFIG_SCx200_GPIO is not set
-# CONFIG_AMD_RNG is not set
-# CONFIG_INTEL_RNG is not set
-# CONFIG_HW_RANDOM is not set
-# CONFIG_AMD_PM768 is not set
-# CONFIG_NVRAM is not set
-# CONFIG_RTC is not set
-# CONFIG_DTLK is not set
-# CONFIG_R3964 is not set
-# CONFIG_APPLICOM is not set
-# CONFIG_SONYPI is not set
-
-#
-# Ftape, the floppy tape device driver
-#
-# CONFIG_FTAPE is not set
-# CONFIG_AGP is not set
-
-#
-# Direct Rendering Manager (XFree86 DRI support)
-#
-# CONFIG_DRM is not set
-# CONFIG_MWAVE is not set
-# CONFIG_OBMOUSE is not set
-
-#
-# File systems
-#
-# CONFIG_QUOTA is not set
-# CONFIG_QFMT_V2 is not set
-CONFIG_AUTOFS_FS=y
-CONFIG_AUTOFS4_FS=y
-# CONFIG_REISERFS_FS is not set
-# CONFIG_REISERFS_CHECK is not set
-# CONFIG_REISERFS_PROC_INFO is not set
-# CONFIG_ADFS_FS is not set
-# CONFIG_ADFS_FS_RW is not set
-# CONFIG_AFFS_FS is not set
-# CONFIG_HFS_FS is not set
-# CONFIG_HFSPLUS_FS is not set
-# CONFIG_BEFS_FS is not set
-# CONFIG_BEFS_DEBUG is not set
-# CONFIG_BFS_FS is not set
-CONFIG_EXT3_FS=y
-CONFIG_JBD=y
-# CONFIG_JBD_DEBUG is not set
-CONFIG_FAT_FS=y
-CONFIG_MSDOS_FS=y
-CONFIG_UMSDOS_FS=y
-CONFIG_VFAT_FS=y
-# CONFIG_EFS_FS is not set
-# CONFIG_JFFS_FS is not set
-# CONFIG_JFFS2_FS is not set
-# CONFIG_CRAMFS is not set
-CONFIG_TMPFS=y
-CONFIG_RAMFS=y
-CONFIG_ISO9660_FS=y
-CONFIG_JOLIET=y
-CONFIG_ZISOFS=y
-# CONFIG_JFS_FS is not set
-# CONFIG_JFS_DEBUG is not set
-# CONFIG_JFS_STATISTICS is not set
-# CONFIG_MINIX_FS is not set
-# CONFIG_VXFS_FS is not set
-# CONFIG_NTFS_FS is not set
-# CONFIG_NTFS_RW is not set
-# CONFIG_HPFS_FS is not set
-CONFIG_PROC_FS=y
-# CONFIG_DEVFS_FS is not set
-# CONFIG_DEVFS_MOUNT is not set
-# CONFIG_DEVFS_DEBUG is not set
-CONFIG_DEVPTS_FS=y
-# CONFIG_QNX4FS_FS is not set
-# CONFIG_QNX4FS_RW is not set
-# CONFIG_ROMFS_FS is not set
-CONFIG_EXT2_FS=y
-# CONFIG_SYSV_FS is not set
-# CONFIG_UDF_FS is not set
-# CONFIG_UDF_RW is not set
-# CONFIG_UFS_FS is not set
-# CONFIG_UFS_FS_WRITE is not set
-# CONFIG_XFS_FS is not set
-# CONFIG_XFS_QUOTA is not set
-# CONFIG_XFS_RT is not set
-# CONFIG_XFS_TRACE is not set
-# CONFIG_XFS_DEBUG is not set
-
-#
-# Network File Systems
-#
-# CONFIG_CODA_FS is not set
-# CONFIG_INTERMEZZO_FS is not set
-CONFIG_NFS_FS=y
-CONFIG_NFS_V3=y
-# CONFIG_NFS_DIRECTIO is not set
-CONFIG_ROOT_NFS=y
-CONFIG_NFSD=y
-CONFIG_NFSD_V3=y
-# CONFIG_NFSD_TCP is not set
-CONFIG_SUNRPC=y
-CONFIG_LOCKD=y
-CONFIG_LOCKD_V4=y
-# CONFIG_SMB_FS is not set
-# CONFIG_NCP_FS is not set
-# CONFIG_NCPFS_PACKET_SIGNING is not set
-# CONFIG_NCPFS_IOCTL_LOCKING is not set
-# CONFIG_NCPFS_STRONG is not set
-# CONFIG_NCPFS_NFS_NS is not set
-# CONFIG_NCPFS_OS2_NS is not set
-# CONFIG_NCPFS_SMALLDOS is not set
-# CONFIG_NCPFS_NLS is not set
-# CONFIG_NCPFS_EXTRAS is not set
-CONFIG_ZISOFS_FS=y
-
-#
-# Partition Types
-#
-CONFIG_PARTITION_ADVANCED=y
-# CONFIG_ACORN_PARTITION is not set
-# CONFIG_OSF_PARTITION is not set
-# CONFIG_AMIGA_PARTITION is not set
-# CONFIG_ATARI_PARTITION is not set
-# CONFIG_MAC_PARTITION is not set
-CONFIG_MSDOS_PARTITION=y
-# CONFIG_BSD_DISKLABEL is not set
-# CONFIG_MINIX_SUBPARTITION is not set
-# CONFIG_SOLARIS_X86_PARTITION is not set
-# CONFIG_UNIXWARE_DISKLABEL is not set
-# CONFIG_LDM_PARTITION is not set
-# CONFIG_SGI_PARTITION is not set
-# CONFIG_ULTRIX_PARTITION is not set
-# CONFIG_SUN_PARTITION is not set
-# CONFIG_EFI_PARTITION is not set
-# CONFIG_SMB_NLS is not set
-CONFIG_NLS=y
-
-#
-# Native Language Support
-#
-CONFIG_NLS_DEFAULT="iso8559-1"
-# CONFIG_NLS_CODEPAGE_437 is not set
-# CONFIG_NLS_CODEPAGE_737 is not set
-# CONFIG_NLS_CODEPAGE_775 is not set
-# CONFIG_NLS_CODEPAGE_850 is not set
-# CONFIG_NLS_CODEPAGE_852 is not set
-# CONFIG_NLS_CODEPAGE_855 is not set
-# CONFIG_NLS_CODEPAGE_857 is not set
-# CONFIG_NLS_CODEPAGE_860 is not set
-# CONFIG_NLS_CODEPAGE_861 is not set
-# CONFIG_NLS_CODEPAGE_862 is not set
-# CONFIG_NLS_CODEPAGE_863 is not set
-# CONFIG_NLS_CODEPAGE_864 is not set
-# CONFIG_NLS_CODEPAGE_865 is not set
-# CONFIG_NLS_CODEPAGE_866 is not set
-# CONFIG_NLS_CODEPAGE_869 is not set
-# CONFIG_NLS_CODEPAGE_936 is not set
-# CONFIG_NLS_CODEPAGE_950 is not set
-# CONFIG_NLS_CODEPAGE_932 is not set
-# CONFIG_NLS_CODEPAGE_949 is not set
-# CONFIG_NLS_CODEPAGE_874 is not set
-# CONFIG_NLS_ISO8859_8 is not set
-# CONFIG_NLS_CODEPAGE_1250 is not set
-# CONFIG_NLS_CODEPAGE_1251 is not set
-CONFIG_NLS_ISO8859_1=y
-# CONFIG_NLS_ISO8859_2 is not set
-# CONFIG_NLS_ISO8859_3 is not set
-# CONFIG_NLS_ISO8859_4 is not set
-# CONFIG_NLS_ISO8859_5 is not set
-# CONFIG_NLS_ISO8859_6 is not set
-# CONFIG_NLS_ISO8859_7 is not set
-# CONFIG_NLS_ISO8859_9 is not set
-# CONFIG_NLS_ISO8859_13 is not set
-# CONFIG_NLS_ISO8859_14 is not set
-# CONFIG_NLS_ISO8859_15 is not set
-# CONFIG_NLS_KOI8_R is not set
-# CONFIG_NLS_KOI8_U is not set
-# CONFIG_NLS_UTF8 is not set
-
-#
-# Console drivers
-#
-CONFIG_XEN_CONSOLE=y
-
-#
-# Kernel hacking
-#
-CONFIG_DEBUG_KERNEL=y
-# CONFIG_DEBUG_STACKOVERFLOW is not set
-# CONFIG_DEBUG_HIGHMEM is not set
-# CONFIG_DEBUG_SLAB is not set
-# CONFIG_DEBUG_IOVIRT is not set
-# CONFIG_MAGIC_SYSRQ is not set
-# CONFIG_DEBUG_SPINLOCK is not set
-# CONFIG_DEBUG_BUGVERBOSE is not set
-CONFIG_KALLSYMS=y
-# CONFIG_FRAME_POINTER is not set
-CONFIG_LOG_BUF_SHIFT=0
-
-#
-# Cryptographic options
-#
-# CONFIG_CRYPTO is not set
-
-#
-# Library routines
-#
-# CONFIG_CRC32 is not set
-CONFIG_ZLIB_INFLATE=y
-# CONFIG_ZLIB_DEFLATE is not set
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/drivers/balloon/Makefile
--- a/linux-2.4.30-xen-sparse/arch/xen/drivers/balloon/Makefile Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,4 +0,0 @@
-O_TARGET := drv.o
-export-objs := balloon.o
-obj-y := balloon.o
-include $(TOPDIR)/Rules.make
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/drivers/blkif/Makefile
--- a/linux-2.4.30-xen-sparse/arch/xen/drivers/blkif/Makefile Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,10 +0,0 @@
-
-O_TARGET := drv.o
-
-subdir-$(CONFIG_XEN_BLKDEV_FRONTEND) += frontend
-obj-$(CONFIG_XEN_BLKDEV_FRONTEND) += frontend/drv.o
-
-subdir-$(CONFIG_XEN_PHYSDEV_ACCESS) += backend
-obj-$(CONFIG_XEN_PHYSDEV_ACCESS) += backend/drv.o
-
-include $(TOPDIR)/Rules.make
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/drivers/blkif/backend/Makefile
--- a/linux-2.4.30-xen-sparse/arch/xen/drivers/blkif/backend/Makefile Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,3 +0,0 @@
-O_TARGET := drv.o
-obj-y := main.o control.o interface.o vbd.o
-include $(TOPDIR)/Rules.make
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/drivers/blkif/frontend/Makefile
--- a/linux-2.4.30-xen-sparse/arch/xen/drivers/blkif/frontend/Makefile Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,3 +0,0 @@
-O_TARGET := drv.o
-obj-y := blkfront.o vbd.o
-include $(TOPDIR)/Rules.make
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/drivers/blkif/frontend/common.h
--- a/linux-2.4.30-xen-sparse/arch/xen/drivers/blkif/frontend/common.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,93 +0,0 @@
-/******************************************************************************
- * arch/xen/drivers/blkif/frontend/common.h
- *
- * Shared definitions between all levels of XenoLinux Virtual block devices.
- */
-
-#ifndef __XEN_DRIVERS_COMMON_H__
-#define __XEN_DRIVERS_COMMON_H__
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/hdreg.h>
-#include <linux/blkdev.h>
-#include <linux/major.h>
-#include <asm-xen/xen-public/xen.h>
-#include <asm/io.h>
-#include <asm/atomic.h>
-#include <asm/uaccess.h>
-#include <asm-xen/xen-public/io/blkif.h>
-
-#if 1
-#define IPRINTK(fmt, args...) \
- printk(KERN_INFO "xen_blk: " fmt, ##args)
-#else
-#define IPRINTK(fmt, args...) ((void)0)
-#endif
-
-#if 1
-#define WPRINTK(fmt, args...) \
- printk(KERN_WARNING "xen_blk: " fmt, ##args)
-#else
-#define WPRINTK(fmt, args...) ((void)0)
-#endif
-
-#if 0
-#define DPRINTK(_f, _a...) printk ( KERN_ALERT _f , ## _a )
-#else
-#define DPRINTK(_f, _a...) ((void)0)
-#endif
-
-#if 0
-#define DPRINTK_IOCTL(_f, _a...) printk ( KERN_ALERT _f , ## _a )
-#else
-#define DPRINTK_IOCTL(_f, _a...) ((void)0)
-#endif
-
-/* Private gendisk->flags[] values. */
-#define GENHD_FL_XEN 2 /* Is unit a Xen block device? */
-#define GENHD_FL_VIRT_PARTNS 4 /* Are unit partitions virtual? */
-
-/*
- * We have one of these per vbd, whether ide, scsi or 'other'.
- * They hang in an array off the gendisk structure. We may end up putting
- * all kinds of interesting stuff here :-)
- */
-typedef struct xl_disk {
- int usage;
-} xl_disk_t;
-
-extern int blkif_open(struct inode *inode, struct file *filep);
-extern int blkif_release(struct inode *inode, struct file *filep);
-extern int blkif_ioctl(struct inode *inode, struct file *filep,
- unsigned command, unsigned long argument);
-extern int blkif_check(kdev_t dev);
-extern int blkif_revalidate(kdev_t dev);
-extern void blkif_control_send(blkif_request_t *req, blkif_response_t *rsp);
-extern void do_blkif_request (request_queue_t *rq);
-
-extern void xlvbd_update_vbds(void);
-
-static inline xl_disk_t *xldev_to_xldisk(kdev_t xldev)
-{
- struct gendisk *gd = get_gendisk(xldev);
-
- if ( gd == NULL )
- return NULL;
-
- return (xl_disk_t *)gd->real_devices +
- (MINOR(xldev) >> gd->minor_shift);
-}
-
-
-/* Virtual block-device subsystem. */
-extern int xlvbd_init(void);
-extern void xlvbd_cleanup(void);
-
-#endif /* __XEN_DRIVERS_COMMON_H__ */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/drivers/blkif/frontend/vbd.c
--- a/linux-2.4.30-xen-sparse/arch/xen/drivers/blkif/frontend/vbd.c Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,540 +0,0 @@
-/******************************************************************************
- * arch/xen/drivers/blkif/frontend/vbd.c
- *
- * Xenolinux virtual block-device driver.
- *
- * Copyright (c) 2003-2004, Keir Fraser & Steve Hand
- * Modifications by Mark A. Williamson are (c) Intel Research Cambridge
- */
-
-#include "common.h"
-#include <linux/blk.h>
-
-/*
- * For convenience we distinguish between ide, scsi and 'other' (i.e.
- * potentially combinations of the two) in the naming scheme and in a few
- * other places (like default readahead, etc).
- */
-#define XLIDE_MAJOR_NAME "hd"
-#define XLSCSI_MAJOR_NAME "sd"
-#define XLVBD_MAJOR_NAME "xvd"
-
-#define XLIDE_DEVS_PER_MAJOR 2
-#define XLSCSI_DEVS_PER_MAJOR 16
-#define XLVBD_DEVS_PER_MAJOR 16
-
-#define XLIDE_PARTN_SHIFT 6 /* amount to shift minor to get 'real' minor */
-#define XLIDE_MAX_PART (1 << XLIDE_PARTN_SHIFT) /* minors per ide vbd */
-
-#define XLSCSI_PARTN_SHIFT 4 /* amount to shift minor to get 'real' minor */
-#define XLSCSI_MAX_PART (1 << XLSCSI_PARTN_SHIFT) /* minors per scsi vbd */
-
-#define XLVBD_PARTN_SHIFT 4 /* amount to shift minor to get 'real' minor */
-#define XLVBD_MAX_PART (1 << XLVBD_PARTN_SHIFT) /* minors per 'other' vbd */
-
-/* The below are for the generic drivers/block/ll_rw_block.c code. */
-static int xlide_blksize_size[256];
-static int xlide_hardsect_size[256];
-static int xlide_max_sectors[256];
-static int xlscsi_blksize_size[256];
-static int xlscsi_hardsect_size[256];
-static int xlscsi_max_sectors[256];
-static int xlvbd_blksize_size[256];
-static int xlvbd_hardsect_size[256];
-static int xlvbd_max_sectors[256];
-
-/* Information about our VBDs. */
-#define MAX_VBDS 64
-static int nr_vbds;
-static vdisk_t *vbd_info;
-
-static struct block_device_operations xlvbd_block_fops =
-{
- open: blkif_open,
- release: blkif_release,
- ioctl: blkif_ioctl,
- check_media_change: blkif_check,
- revalidate: blkif_revalidate,
-};
-
-static int xlvbd_get_vbd_info(vdisk_t *disk_info)
-{
- vdisk_t *buf = (vdisk_t *)__get_free_page(GFP_KERNEL);
- blkif_request_t req;
- blkif_response_t rsp;
- int nr;
-
- memset(&req, 0, sizeof(req));
- req.operation = BLKIF_OP_PROBE;
- req.nr_segments = 1;
-#ifdef CONFIG_XEN_BLKDEV_GRANT
- blkif_control_probe_send(&req, &rsp,
- (unsigned long)(virt_to_machine(buf)));
-#else
- req.frame_and_sects[0] = virt_to_machine(buf) | 7;
-
- blkif_control_send(&req, &rsp);
-#endif
-
- if ( rsp.status <= 0 )
- {
- printk(KERN_ALERT "Could not probe disks (%d)\n", rsp.status);
- return -1;
- }
-
- if ( (nr = rsp.status) > MAX_VBDS )
- nr = MAX_VBDS;
- memcpy(disk_info, buf, nr * sizeof(vdisk_t));
-
- return nr;
-}
-
-/*
- * xlvbd_init_device - initialise a VBD device
- * @disk: a vdisk_t describing the VBD
- *
- * Takes a vdisk_t * that describes a VBD the domain has access to.
- * Performs appropriate initialisation and registration of the device.
- *
- * Care needs to be taken when making re-entrant calls to ensure that
- * corruption does not occur. Also, devices that are in use should not have
- * their details updated. This is the caller's responsibility.
- */
-static int xlvbd_init_device(vdisk_t *xd)
-{
- int device = xd->device;
- int major = MAJOR(device);
- int minor = MINOR(device);
- int is_ide = IDE_DISK_MAJOR(major); /* is this an ide device? */
- int is_scsi= SCSI_BLK_MAJOR(major); /* is this a scsi device? */
- char *major_name;
- struct gendisk *gd;
- struct block_device *bd;
- xl_disk_t *disk;
- int i, rc = 0, max_part, partno;
- unsigned long capacity;
-
- unsigned char buf[64];
-
- if ( (bd = bdget(device)) == NULL )
- return -1;
-
- if ( ((disk = xldev_to_xldisk(device)) != NULL) && (disk->usage != 0) )
- {
- printk(KERN_ALERT "VBD update failed - in use [dev=%x]\n", device);
- rc = -1;
- goto out;
- }
-
- if ( is_ide ) {
-
- major_name = XLIDE_MAJOR_NAME;
- max_part = XLIDE_MAX_PART;
-
- } else if ( is_scsi ) {
-
- major_name = XLSCSI_MAJOR_NAME;
- max_part = XLSCSI_MAX_PART;
-
- } else {
-
- /* SMH: hmm - probably a CCISS driver or sim; assume CCISS for now */
- printk(KERN_ALERT "Assuming device %02x:%02x is CCISS/SCSI\n",
- major, minor);
- is_scsi = 1;
- major_name = "cciss";
- max_part = XLSCSI_MAX_PART;
-
- }
-
- partno = minor & (max_part - 1);
-
- if ( (gd = get_gendisk(device)) == NULL )
- {
- rc = register_blkdev(major, major_name, &xlvbd_block_fops);
- if ( rc < 0 )
- {
- printk(KERN_ALERT "XL VBD: can't get major %d\n", major);
- goto out;
- }
-
- if ( is_ide )
- {
- blksize_size[major] = xlide_blksize_size;
- hardsect_size[major] = xlide_hardsect_size;
- max_sectors[major] = xlide_max_sectors;
- read_ahead[major] = 8;
- }
- else if ( is_scsi )
- {
- blksize_size[major] = xlscsi_blksize_size;
- hardsect_size[major] = xlscsi_hardsect_size;
- max_sectors[major] = xlscsi_max_sectors;
- read_ahead[major] = 8;
- }
- else
- {
- blksize_size[major] = xlvbd_blksize_size;
- hardsect_size[major] = xlvbd_hardsect_size;
- max_sectors[major] = xlvbd_max_sectors;
- read_ahead[major] = 8;
- }
-
- blk_init_queue(BLK_DEFAULT_QUEUE(major), do_blkif_request);
-
- /*
- * Turn off barking 'headactive' mode. We dequeue buffer heads as
- * soon as we pass them to the back-end driver.
- */
- blk_queue_headactive(BLK_DEFAULT_QUEUE(major), 0);
-
- /* Construct an appropriate gendisk structure. */
- gd = kmalloc(sizeof(struct gendisk), GFP_KERNEL);
- gd->major = major;
- gd->major_name = major_name;
-
- gd->max_p = max_part;
- if ( is_ide )
- {
- gd->minor_shift = XLIDE_PARTN_SHIFT;
- gd->nr_real = XLIDE_DEVS_PER_MAJOR;
- }
- else if ( is_scsi )
- {
- gd->minor_shift = XLSCSI_PARTN_SHIFT;
- gd->nr_real = XLSCSI_DEVS_PER_MAJOR;
- }
- else
- {
- gd->minor_shift = XLVBD_PARTN_SHIFT;
- gd->nr_real = XLVBD_DEVS_PER_MAJOR;
- }
-
- /*
- ** The sizes[] and part[] arrays hold the sizes and other
- ** information about every partition with this 'major' (i.e.
- ** every disk sharing the 8 bit prefix * max partns per disk)
- */
- gd->sizes = kmalloc(max_part*gd->nr_real*sizeof(int), GFP_KERNEL);
- gd->part = kmalloc(max_part*gd->nr_real*sizeof(struct hd_struct),
- GFP_KERNEL);
- memset(gd->sizes, 0, max_part * gd->nr_real * sizeof(int));
- memset(gd->part, 0, max_part * gd->nr_real
- * sizeof(struct hd_struct));
-
-
- gd->real_devices = kmalloc(gd->nr_real * sizeof(xl_disk_t),
- GFP_KERNEL);
- memset(gd->real_devices, 0, gd->nr_real * sizeof(xl_disk_t));
-
- gd->next = NULL;
- gd->fops = &xlvbd_block_fops;
-
- gd->de_arr = kmalloc(gd->nr_real * sizeof(*gd->de_arr),
- GFP_KERNEL);
- gd->flags = kmalloc(gd->nr_real * sizeof(*gd->flags), GFP_KERNEL);
-
- memset(gd->de_arr, 0, gd->nr_real * sizeof(*gd->de_arr));
- memset(gd->flags, 0, gd->nr_real * sizeof(*gd->flags));
-
- add_gendisk(gd);
-
- blk_size[major] = gd->sizes;
- }
-
- if ( xd->info & VDISK_READONLY )
- set_device_ro(device, 1);
-
- gd->flags[minor >> gd->minor_shift] |= GENHD_FL_XEN;
-
- /* NB. Linux 2.4 only handles 32-bit sector offsets and capacities. */
- capacity = (unsigned long)xd->capacity;
-
- if ( partno != 0 )
- {
- /*
- * If this was previously set up as a real disc we will have set
- * up partition-table information. Virtual partitions override
- * 'real' partitions, and the two cannot coexist on a device.
- */
- if ( !(gd->flags[minor >> gd->minor_shift] & GENHD_FL_VIRT_PARTNS) &&
- (gd->sizes[minor & ~(max_part-1)] != 0) )
- {
- /*
- * Any non-zero sub-partition entries must be cleaned out before
- * installing 'virtual' partition entries. The two types cannot
- * coexist, and virtual partitions are favoured.
- */
- kdev_t dev = device & ~(max_part-1);
- for ( i = max_part - 1; i > 0; i-- )
- {
- invalidate_device(dev+i, 1);
- gd->part[MINOR(dev+i)].start_sect = 0;
- gd->part[MINOR(dev+i)].nr_sects = 0;
- gd->sizes[MINOR(dev+i)] = 0;
- }
- printk(KERN_ALERT
- "Virtual partitions found for /dev/%s - ignoring any "
- "real partition information we may have found.\n",
- disk_name(gd, MINOR(device), buf));
- }
-
- /* Need to skankily setup 'partition' information */
- gd->part[minor].start_sect = 0;
- gd->part[minor].nr_sects = capacity;
- gd->sizes[minor] = capacity >>(BLOCK_SIZE_BITS-9);
-
- gd->flags[minor >> gd->minor_shift] |= GENHD_FL_VIRT_PARTNS;
- }
- else
- {
- gd->part[minor].nr_sects = capacity;
- gd->sizes[minor] = capacity>>(BLOCK_SIZE_BITS-9);
-
- /* Some final fix-ups depending on the device type */
- if ( xd->info & VDISK_REMOVABLE )
- {
- gd->flags[minor >> gd->minor_shift] |= GENHD_FL_REMOVABLE;
- printk(KERN_ALERT
- "Skipping partition check on %s /dev/%s\n",
- (xd->info & VDISK_CDROM) ? "cdrom" : "removable",
- disk_name(gd, MINOR(device), buf));
- }
- else
- {
- /* Only check partitions on real discs (not virtual!). */
- if ( gd->flags[minor>>gd->minor_shift] & GENHD_FL_VIRT_PARTNS )
- {
- printk(KERN_ALERT
- "Skipping partition check on virtual /dev/%s\n",
- disk_name(gd, MINOR(device), buf));
- break;
- }
- register_disk(gd, device, gd->max_p, &xlvbd_block_fops, capacity);
- }
- }
-
- out:
- bdput(bd);
- return rc;
-}
-
-
-/*
- * xlvbd_remove_device - remove a device node if possible
- * @device: numeric device ID
- *
- * Updates the gendisk structure and invalidates devices.
- *
- * This is OK for now but in future, should perhaps consider where this should
- * deallocate gendisks / unregister devices.
- */
-static int xlvbd_remove_device(int device)
-{
- int i, rc = 0, minor = MINOR(device);
- struct gendisk *gd;
- struct block_device *bd;
- xl_disk_t *disk = NULL;
-
- if ( (bd = bdget(device)) == NULL )
- return -1;
-
- if ( ((gd = get_gendisk(device)) == NULL) ||
- ((disk = xldev_to_xldisk(device)) == NULL) )
- BUG();
-
- if ( disk->usage != 0 )
- {
- printk(KERN_ALERT "VBD removal failed - in use [dev=%x]\n", device);
- rc = -1;
- goto out;
- }
-
- if ( (minor & (gd->max_p-1)) != 0 )
- {
- /* 1: The VBD is mapped to a partition rather than a whole unit. */
- invalidate_device(device, 1);
- gd->part[minor].start_sect = 0;
- gd->part[minor].nr_sects = 0;
- gd->sizes[minor] = 0;
-
- /* Clear the consists-of-virtual-partitions flag if possible. */
- gd->flags[minor >> gd->minor_shift] &= ~GENHD_FL_VIRT_PARTNS;
- for ( i = 1; i < gd->max_p; i++ )
- if ( gd->sizes[(minor & ~(gd->max_p-1)) + i] != 0 )
- gd->flags[minor >> gd->minor_shift] |= GENHD_FL_VIRT_PARTNS;
-
- /*
- * If all virtual partitions are now gone, and a 'whole unit' VBD is
- * present, then we can try to grok the unit's real partition table.
- */
- if ( !(gd->flags[minor >> gd->minor_shift] & GENHD_FL_VIRT_PARTNS) &&
- (gd->sizes[minor & ~(gd->max_p-1)] != 0) &&
- !(gd->flags[minor >> gd->minor_shift] & GENHD_FL_REMOVABLE) )
- {
- register_disk(gd,
- device&~(gd->max_p-1),
- gd->max_p,
- &xlvbd_block_fops,
- gd->part[minor&~(gd->max_p-1)].nr_sects);
- }
- }
- else
- {
- /*
- * 2: The VBD is mapped to an entire 'unit'. Clear all partitions.
- * NB. The partition entries are only cleared if there are no VBDs
- * mapped to individual partitions on this unit.
- */
- i = gd->max_p - 1; /* Default: clear subpartitions as well. */
- if ( gd->flags[minor >> gd->minor_shift] & GENHD_FL_VIRT_PARTNS )
- i = 0; /* 'Virtual' mode: only clear the 'whole unit' entry. */
- while ( i >= 0 )
- {
- invalidate_device(device+i, 1);
- gd->part[minor+i].start_sect = 0;
- gd->part[minor+i].nr_sects = 0;
- gd->sizes[minor+i] = 0;
- i--;
- }
- }
-
- out:
- bdput(bd);
- return rc;
-}
-
-/*
- * xlvbd_update_vbds - reprobes the VBD status and performs updates driver
- * state. The VBDs need to be updated in this way when the domain is
- * initialised and also each time we receive an XLBLK_UPDATE event.
- */
-void xlvbd_update_vbds(void)
-{
- int i, j, k, old_nr, new_nr;
- vdisk_t *old_info, *new_info, *merged_info;
-
- old_info = vbd_info;
- old_nr = nr_vbds;
-
- new_info = kmalloc(MAX_VBDS * sizeof(vdisk_t), GFP_KERNEL);
- if (!new_info)
- return;
-
- if ( unlikely(new_nr = xlvbd_get_vbd_info(new_info)) < 0 )
- goto out;
-
- /*
- * Final list maximum size is old list + new list. This occurs only when
- * old list and new list do not overlap at all, and we cannot yet destroy
- * VBDs in the old list because the usage counts are busy.
- */
- merged_info = kmalloc((old_nr + new_nr) * sizeof(vdisk_t), GFP_KERNEL);
- if (!merged_info)
- goto out;
-
- /* @i tracks old list; @j tracks new list; @k tracks merged list. */
- i = j = k = 0;
-
- while ( (i < old_nr) && (j < new_nr) )
- {
- if ( old_info[i].device < new_info[j].device )
- {
- if ( xlvbd_remove_device(old_info[i].device) != 0 )
- memcpy(&merged_info[k++], &old_info[i], sizeof(vdisk_t));
- i++;
- }
- else if ( old_info[i].device > new_info[j].device )
- {
- if ( xlvbd_init_device(&new_info[j]) == 0 )
- memcpy(&merged_info[k++], &new_info[j], sizeof(vdisk_t));
- j++;
- }
- else
- {
- if ( ((old_info[i].capacity == new_info[j].capacity) &&
- (old_info[i].info == new_info[j].info)) ||
- (xlvbd_remove_device(old_info[i].device) != 0) )
- memcpy(&merged_info[k++], &old_info[i], sizeof(vdisk_t));
- else if ( xlvbd_init_device(&new_info[j]) == 0 )
- memcpy(&merged_info[k++], &new_info[j], sizeof(vdisk_t));
- i++; j++;
- }
- }
-
- for ( ; i < old_nr; i++ )
- {
- if ( xlvbd_remove_device(old_info[i].device) != 0 )
- memcpy(&merged_info[k++], &old_info[i], sizeof(vdisk_t));
- }
-
- for ( ; j < new_nr; j++ )
- {
- if ( xlvbd_init_device(&new_info[j]) == 0 )
- memcpy(&merged_info[k++], &new_info[j], sizeof(vdisk_t));
- }
-
- vbd_info = merged_info;
- nr_vbds = k;
-
- kfree(old_info);
-out:
- kfree(new_info);
-}
-
-
-/*
- * Set up all the linux device goop for the virtual block devices (vbd's) that
- * we know about. Note that although from the backend driver's p.o.v. VBDs are
- * addressed simply an opaque 16-bit device number, the domain creation tools
- * conventionally allocate these numbers to correspond to those used by 'real'
- * linux -- this is just for convenience as it means e.g. that the same
- * /etc/fstab can be used when booting with or without Xen.
- */
-int xlvbd_init(void)
-{
- int i;
-
- /*
- * If compiled as a module, we don't support unloading yet. We therefore
- * permanently increment the reference count to disallow it.
- */
- SET_MODULE_OWNER(&xlvbd_block_fops);
- MOD_INC_USE_COUNT;
-
- /* Initialize the global arrays. */
- for ( i = 0; i < 256; i++ )
- {
- xlide_blksize_size[i] = 1024;
- xlide_hardsect_size[i] = 512;
- xlide_max_sectors[i] = 512;
-
- xlscsi_blksize_size[i] = 1024;
- xlscsi_hardsect_size[i] = 512;
- xlscsi_max_sectors[i] = 512;
-
- xlvbd_blksize_size[i] = 512;
- xlvbd_hardsect_size[i] = 512;
- xlvbd_max_sectors[i] = 512;
- }
-
- vbd_info = kmalloc(MAX_VBDS * sizeof(vdisk_t), GFP_KERNEL);
- if (!vbd_info)
- return -ENOMEM;
-
- nr_vbds = xlvbd_get_vbd_info(vbd_info);
-
- if ( nr_vbds < 0 )
- {
- kfree(vbd_info);
- vbd_info = NULL;
- nr_vbds = 0;
- }
- else
- {
- for ( i = 0; i < nr_vbds; i++ )
- xlvbd_init_device(&vbd_info[i]);
- }
-
- return 0;
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/drivers/console/Makefile
--- a/linux-2.4.30-xen-sparse/arch/xen/drivers/console/Makefile Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,3 +0,0 @@
-O_TARGET := drv.o
-obj-$(CONFIG_XEN_CONSOLE) := console.o
-include $(TOPDIR)/Rules.make
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/drivers/dom0/Makefile
--- a/linux-2.4.30-xen-sparse/arch/xen/drivers/dom0/Makefile Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,3 +0,0 @@
-O_TARGET := drv.o
-obj-y := core.o
-include $(TOPDIR)/Rules.make
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/drivers/evtchn/Makefile
--- a/linux-2.4.30-xen-sparse/arch/xen/drivers/evtchn/Makefile Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,3 +0,0 @@
-O_TARGET := drv.o
-obj-y := evtchn.o
-include $(TOPDIR)/Rules.make
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/drivers/netif/Makefile
--- a/linux-2.4.30-xen-sparse/arch/xen/drivers/netif/Makefile Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,10 +0,0 @@
-
-O_TARGET := drv.o
-
-subdir-$(CONFIG_XEN_NETDEV_FRONTEND) += frontend
-obj-$(CONFIG_XEN_NETDEV_FRONTEND) += frontend/drv.o
-
-subdir-$(CONFIG_XEN_PHYSDEV_ACCESS) += backend
-obj-$(CONFIG_XEN_PHYSDEV_ACCESS) += backend/drv.o
-
-include $(TOPDIR)/Rules.make
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/drivers/netif/backend/Makefile
--- a/linux-2.4.30-xen-sparse/arch/xen/drivers/netif/backend/Makefile Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,4 +0,0 @@
-O_TARGET := drv.o
-export-objs := interface.o
-obj-y := main.o control.o interface.o
-include $(TOPDIR)/Rules.make
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/drivers/netif/frontend/Makefile
--- a/linux-2.4.30-xen-sparse/arch/xen/drivers/netif/frontend/Makefile Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,3 +0,0 @@
-O_TARGET := drv.o
-obj-y := main.o
-include $(TOPDIR)/Rules.make
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/kernel/Makefile
--- a/linux-2.4.30-xen-sparse/arch/xen/kernel/Makefile Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,20 +0,0 @@
-
-.S.o:
- $(CC) $(AFLAGS) -traditional -c $< -o $*.o
-
-all: kernel.o head.o init_task.o
-
-O_TARGET := kernel.o
-
-export-objs := i386_ksyms.o gnttab.o skbuff.o ctrl_if.o
-
-obj-y := process.o semaphore.o signal.o entry.o traps.o irq.o \
- ptrace.o ioport.o ldt.o setup.o time.o sys_i386.o \
- i386_ksyms.o i387.o evtchn.o ctrl_if.o pci-dma.o \
- reboot.o fixup.o gnttab.o skbuff.o
-
-ifdef CONFIG_PCI
-obj-y += pci-i386.o pci-pc.o
-endif
-
-include $(TOPDIR)/Rules.make
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/kernel/entry.S
--- a/linux-2.4.30-xen-sparse/arch/xen/kernel/entry.S Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,779 +0,0 @@
-/*
- * linux/arch/i386/entry.S
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- */
-
-/*
- * entry.S contains the system-call and fault low-level handling routines.
- * This also contains the timer-interrupt handler, as well as all interrupts
- * and faults that can result in a task-switch.
- *
- * NOTE: This code handles signal-recognition, which happens every time
- * after a timer-interrupt and after each system call.
- *
- * I changed all the .align's to 4 (16 byte alignment), as that's faster
- * on a 486.
- *
- * Stack layout in 'ret_to_user':
- * ptrace needs to have all regs on the stack.
- * if the order here is changed, it needs to be
- * updated in fork.c:copy_process, signal.c:do_signal,
- * ptrace.c and ptrace.h
- *
- * 0(%esp) - %ebx
- * 4(%esp) - %ecx
- * 8(%esp) - %edx
- * C(%esp) - %esi
- * 10(%esp) - %edi
- * 14(%esp) - %ebp
- * 18(%esp) - %eax
- * 1C(%esp) - %ds
- * 20(%esp) - %es
- * 24(%esp) - orig_eax
- * 28(%esp) - %eip
- * 2C(%esp) - %cs
- * 30(%esp) - %eflags
- * 34(%esp) - %oldesp
- * 38(%esp) - %oldss
- *
- * "current" is in register %ebx during any slow entries.
- */
-
-#include <linux/config.h>
-#include <linux/sys.h>
-#include <linux/linkage.h>
-#include <asm/segment.h>
-#include <asm/smp.h>
-
-EBX = 0x00
-ECX = 0x04
-EDX = 0x08
-ESI = 0x0C
-EDI = 0x10
-EBP = 0x14
-EAX = 0x18
-DS = 0x1C
-ES = 0x20
-ORIG_EAX = 0x24
-EIP = 0x28
-CS = 0x2C
-EFLAGS = 0x30
-OLDESP = 0x34
-OLDSS = 0x38
-
-CF_MASK = 0x00000001
-TF_MASK = 0x00000100
-IF_MASK = 0x00000200
-DF_MASK = 0x00000400
-NT_MASK = 0x00004000
-
-/* Offsets into task_struct. */
-state = 0
-flags = 4
-sigpending = 8
-addr_limit = 12
-exec_domain = 16
-need_resched = 20
-tsk_ptrace = 24
-processor = 52
-
-/* Offsets into shared_info_t. */
-#define evtchn_upcall_pending /* 0 */
-#define evtchn_upcall_mask 1
-
-ENOSYS = 38
-
-
-#define SAVE_ALL \
- cld; \
- pushl %es; \
- pushl %ds; \
- pushl %eax; \
- pushl %ebp; \
- pushl %edi; \
- pushl %esi; \
- pushl %edx; \
- pushl %ecx; \
- pushl %ebx; \
- movl $(__KERNEL_DS),%edx; \
- movl %edx,%ds; \
- movl %edx,%es;
-
-#define RESTORE_ALL \
- popl %ebx; \
- popl %ecx; \
- popl %edx; \
- popl %esi; \
- popl %edi; \
- popl %ebp; \
- popl %eax; \
-1: popl %ds; \
-2: popl %es; \
- addl $4,%esp; \
-3: iret; \
-.section .fixup,"ax"; \
-4: movl $0,(%esp); \
- jmp 1b; \
-5: movl $0,(%esp); \
- jmp 2b; \
-6: pushl %ss; \
- popl %ds; \
- pushl %ss; \
- popl %es; \
- pushl $11; \
- call do_exit; \
-.previous; \
-.section __ex_table,"a";\
- .align 4; \
- .long 1b,4b; \
- .long 2b,5b; \
- .long 3b,6b; \
-.previous
-
-#define GET_CURRENT(reg) \
- movl $-8192, reg; \
- andl %esp, reg
-
-ENTRY(lcall7)
- pushfl # We get a different stack layout with call
- pushl %eax # gates, which has to be cleaned up later..
- SAVE_ALL
- movl EIP(%esp),%eax # due to call gates, this is eflags, not eip..
- movl CS(%esp),%edx # this is eip..
- movl EFLAGS(%esp),%ecx # and this is cs..
- movl %eax,EFLAGS(%esp) #
- andl $~(NT_MASK|TF_MASK|DF_MASK), %eax
- pushl %eax
- popfl
- movl %edx,EIP(%esp) # Now we move them to their "normal" places
- movl %ecx,CS(%esp) #
- movl %esp,%ebx
- pushl %ebx
- andl $-8192,%ebx # GET_CURRENT
- movl exec_domain(%ebx),%edx # Get the execution domain
- movl 4(%edx),%edx # Get the lcall7 handler for the domain
- pushl $0x7
- call *%edx
- addl $4, %esp
- popl %eax
- jmp ret_to_user
-
-ENTRY(lcall27)
- pushfl # We get a different stack layout with call
- pushl %eax # gates, which has to be cleaned up later..
- SAVE_ALL
- movl EIP(%esp),%eax # due to call gates, this is eflags, not eip..
- movl CS(%esp),%edx # this is eip..
- movl EFLAGS(%esp),%ecx # and this is cs..
- movl %eax,EFLAGS(%esp) #
- andl $~(NT_MASK|TF_MASK|DF_MASK), %eax
- pushl %eax
- popfl
- movl %edx,EIP(%esp) # Now we move them to their "normal" places
- movl %ecx,CS(%esp) #
- movl %esp,%ebx
- pushl %ebx
- andl $-8192,%ebx # GET_CURRENT
- movl exec_domain(%ebx),%edx # Get the execution domain
- movl 4(%edx),%edx # Get the lcall7 handler for the domain
- pushl $0x27
- call *%edx
- addl $4, %esp
- popl %eax
- jmp ret_to_user
-
-ENTRY(ret_from_fork)
- pushl %ebx
- call SYMBOL_NAME(schedule_tail)
- addl $4, %esp
- GET_CURRENT(%ebx)
- testb $0x02,tsk_ptrace(%ebx) # PT_TRACESYS
- jne tracesys_exit
- jmp ret_to_user
-
-/*
- * Return to user mode is not as complex as all this looks,
- * but we want the default path for a system call return to
- * go as quickly as possible which is why some of this is
- * less clear than it otherwise should be.
- */
-ENTRY(system_call)
- pushl %eax # save orig_eax
- SAVE_ALL
- GET_CURRENT(%ebx)
- testb $0x02,tsk_ptrace(%ebx) # PT_TRACESYS
- jne tracesys
- cmpl $(NR_syscalls),%eax
- jae badsys
- call *SYMBOL_NAME(sys_call_table)(,%eax,4)
- movl %eax,EAX(%esp) # save the return value
-ret_to_user:
- movl SYMBOL_NAME(HYPERVISOR_shared_info),%esi
- movb $1,evtchn_upcall_mask(%esi) # make tests atomic
-ret_to_user_nocli:
- cmpl $0,need_resched(%ebx)
- jne reschedule
- cmpl $0,sigpending(%ebx)
- je safesti # ensure need_resched updates are seen
-/*signal_return:*/
- movb $0,evtchn_upcall_mask(%esi) # reenable event callbacks
- movl %esp,%eax
- xorl %edx,%edx
- call SYMBOL_NAME(do_signal)
- jmp safesti
-
- ALIGN
-restore_all:
- RESTORE_ALL
-
- ALIGN
-tracesys:
- movl $-ENOSYS,EAX(%esp)
- call SYMBOL_NAME(syscall_trace)
- movl ORIG_EAX(%esp),%eax
- cmpl $(NR_syscalls),%eax
- jae tracesys_exit
- call *SYMBOL_NAME(sys_call_table)(,%eax,4)
- movl %eax,EAX(%esp) # save the return value
-tracesys_exit:
- call SYMBOL_NAME(syscall_trace)
- jmp ret_to_user
-badsys:
- movl $-ENOSYS,EAX(%esp)
- jmp ret_to_user
-
- ALIGN
-ENTRY(ret_from_intr)
- GET_CURRENT(%ebx)
-ret_from_exception:
- movb CS(%esp),%al
- testl $2,%eax
- jne ret_to_user
- jmp restore_all
-
- ALIGN
-reschedule:
- movb $0,evtchn_upcall_mask(%esi) # reenable event callbacks
- call SYMBOL_NAME(schedule) # test
- jmp ret_to_user
-
-ENTRY(divide_error)
- pushl $0 # no error code
- pushl $ SYMBOL_NAME(do_divide_error)
- ALIGN
-error_code:
- pushl %ds
- pushl %eax
- xorl %eax,%eax
- pushl %ebp
- pushl %edi
- pushl %esi
- pushl %edx
- decl %eax # eax = -1
- pushl %ecx
- pushl %ebx
- GET_CURRENT(%ebx)
- cld
- movl %es,%ecx
- movl ORIG_EAX(%esp), %esi # get the error code
- movl ES(%esp), %edi # get the function address
- movl %eax, ORIG_EAX(%esp)
- movl %ecx, ES(%esp)
- movl %esp,%edx
- pushl %esi # push the error code
- pushl %edx # push the pt_regs pointer
- movl $(__KERNEL_DS),%edx
- movl %edx,%ds
- movl %edx,%es
- call *%edi
- addl $8,%esp
- jmp ret_from_exception
-
-# A note on the "critical region" in our callback handler.
-# We want to avoid stacking callback handlers due to events occurring
-# during handling of the last event. To do this, we keep events disabled
-# until we've done all processing. HOWEVER, we must enable events before
-# popping the stack frame (can't be done atomically) and so it would still
-# be possible to get enough handler activations to overflow the stack.
-# Although unlikely, bugs of that kind are hard to track down, so we'd
-# like to avoid the possibility.
-# So, on entry to the handler we detect whether we interrupted an
-# existing activation in its critical region -- if so, we pop the current
-# activation and restart the handler using the previous one.
-ENTRY(hypervisor_callback)
- pushl %eax
- SAVE_ALL
- GET_CURRENT(%ebx)
- movl EIP(%esp),%eax
- cmpl $scrit,%eax
- jb 11f
- cmpl $ecrit,%eax
- jb critical_region_fixup
-11: push %esp
- call evtchn_do_upcall
- add $4,%esp
- movl SYMBOL_NAME(HYPERVISOR_shared_info),%esi
- movb CS(%esp),%cl
- test $2,%cl # slow return to ring 2 or 3
- jne ret_to_user_nocli
-safesti:movb $0,evtchn_upcall_mask(%esi) # reenable event callbacks
-scrit: /**** START OF CRITICAL REGION ****/
- testb $0xFF,evtchn_upcall_pending(%esi)
- jnz 14f # process more events if necessary...
- RESTORE_ALL
-14: movb $1,evtchn_upcall_mask(%esi)
- jmp 11b
-ecrit: /**** END OF CRITICAL REGION ****/
-# [How we do the fixup]. We want to merge the current stack frame with the
-# just-interrupted frame. How we do this depends on where in the critical
-# region the interrupted handler was executing, and so how many saved
-# registers are in each frame. We do this quickly using the lookup table
-# 'critical_fixup_table'. For each byte offset in the critical region, it
-# provides the number of bytes which have already been popped from the
-# interrupted stack frame.
-critical_region_fixup:
- addl $critical_fixup_table-scrit,%eax
- movzbl (%eax),%eax # %eax contains num bytes popped
- mov %esp,%esi
- add %eax,%esi # %esi points at end of src region
- mov %esp,%edi
- add $0x34,%edi # %edi points at end of dst region
- mov %eax,%ecx
- shr $2,%ecx # convert words to bytes
- je 16f # skip loop if nothing to copy
-15: subl $4,%esi # pre-decrementing copy loop
- subl $4,%edi
- movl (%esi),%eax
- movl %eax,(%edi)
- loop 15b
-16: movl %edi,%esp # final %edi is top of merged stack
- jmp 11b
-
-critical_fixup_table:
- .byte 0x00,0x00,0x00 # testb $0xFF,(%esi)
- .byte 0x00,0x00 # jnz 14f
- .byte 0x00 # pop %ebx
- .byte 0x04 # pop %ecx
- .byte 0x08 # pop %edx
- .byte 0x0c # pop %esi
- .byte 0x10 # pop %edi
- .byte 0x14 # pop %ebp
- .byte 0x18 # pop %eax
- .byte 0x1c # pop %ds
- .byte 0x20 # pop %es
- .byte 0x24,0x24,0x24 # add $4,%esp
- .byte 0x28 # iret
- .byte 0x00,0x00,0x00,0x00 # movb $1,4(%esi)
- .byte 0x00,0x00 # jmp 11b
-
-# Hypervisor uses this for application faults while it executes.
-ENTRY(failsafe_callback)
-1: popl %ds
-2: popl %es
-3: popl %fs
-4: popl %gs
-5: iret
-.section .fixup,"ax"; \
-6: movl $0,(%esp); \
- jmp 1b; \
-7: movl $0,(%esp); \
- jmp 2b; \
-8: movl $0,(%esp); \
- jmp 3b; \
-9: movl $0,(%esp); \
- jmp 4b; \
-10: pushl %ss; \
- popl %ds; \
- pushl %ss; \
- popl %es; \
- pushl $11; \
- call do_exit; \
-.previous; \
-.section __ex_table,"a";\
- .align 4; \
- .long 1b,6b; \
- .long 2b,7b; \
- .long 3b,8b; \
- .long 4b,9b; \
- .long 5b,10b; \
-.previous
-
-ENTRY(coprocessor_error)
- pushl $0
- pushl $ SYMBOL_NAME(do_coprocessor_error)
- jmp error_code
-
-ENTRY(simd_coprocessor_error)
- pushl $0
- pushl $ SYMBOL_NAME(do_simd_coprocessor_error)
- jmp error_code
-
-ENTRY(device_not_available)
- pushl $-1 # mark this as an int
- SAVE_ALL
- GET_CURRENT(%ebx)
- call SYMBOL_NAME(math_state_restore)
- jmp ret_from_exception
-
-ENTRY(debug)
- pushl $0
- pushl $ SYMBOL_NAME(do_debug)
- jmp error_code
-
-ENTRY(int3)
- pushl $0
- pushl $ SYMBOL_NAME(do_int3)
- jmp error_code
-
-ENTRY(overflow)
- pushl $0
- pushl $ SYMBOL_NAME(do_overflow)
- jmp error_code
-
-ENTRY(bounds)
- pushl $0
- pushl $ SYMBOL_NAME(do_bounds)
- jmp error_code
-
-ENTRY(invalid_op)
- pushl $0
- pushl $ SYMBOL_NAME(do_invalid_op)
- jmp error_code
-
-ENTRY(coprocessor_segment_overrun)
- pushl $0
- pushl $ SYMBOL_NAME(do_coprocessor_segment_overrun)
- jmp error_code
-
-ENTRY(double_fault)
- pushl $ SYMBOL_NAME(do_double_fault)
- jmp error_code
-
-ENTRY(invalid_TSS)
- pushl $ SYMBOL_NAME(do_invalid_TSS)
- jmp error_code
-
-ENTRY(segment_not_present)
- pushl $ SYMBOL_NAME(do_segment_not_present)
- jmp error_code
-
-ENTRY(stack_segment)
- pushl $ SYMBOL_NAME(do_stack_segment)
- jmp error_code
-
-ENTRY(general_protection)
- pushl $ SYMBOL_NAME(do_general_protection)
- jmp error_code
-
-ENTRY(alignment_check)
- pushl $ SYMBOL_NAME(do_alignment_check)
- jmp error_code
-
-# This handler is special, because it gets an extra value on its stack,
-# which is the linear faulting address.
-#define PAGE_FAULT_STUB(_name1, _name2) \
-ENTRY(_name1) \
- pushl %ds ; \
- pushl %eax ; \
- xorl %eax,%eax ; \
- pushl %ebp ; \
- pushl %edi ; \
- pushl %esi ; \
- pushl %edx ; \
- decl %eax /* eax = -1 */ ; \
- pushl %ecx ; \
- pushl %ebx ; \
- GET_CURRENT(%ebx) ; \
- cld ; \
- movl %es,%ecx ; \
- movl ORIG_EAX(%esp), %esi /* get the error code */ ; \
- movl ES(%esp), %edi /* get the faulting address */ ; \
- movl %eax, ORIG_EAX(%esp) ; \
- movl %ecx, ES(%esp) ; \
- movl %esp,%edx ; \
- pushl %edi /* push the faulting address */ ; \
- pushl %esi /* push the error code */ ; \
- pushl %edx /* push the pt_regs pointer */ ; \
- movl $(__KERNEL_DS),%edx ; \
- movl %edx,%ds ; \
- movl %edx,%es ; \
- call SYMBOL_NAME(_name2) ; \
- addl $12,%esp ; \
- jmp ret_from_exception ;
-PAGE_FAULT_STUB(page_fault, do_page_fault)
-
-ENTRY(machine_check)
- pushl $0
- pushl $ SYMBOL_NAME(do_machine_check)
- jmp error_code
-
-ENTRY(fixup_4gb_segment)
- pushl $ SYMBOL_NAME(do_fixup_4gb_segment)
- jmp error_code
-
-.data
-ENTRY(sys_call_table)
- .long SYMBOL_NAME(sys_ni_syscall) /* 0 - old "setup()" system
call*/
- .long SYMBOL_NAME(sys_exit)
- .long SYMBOL_NAME(sys_fork)
- .long SYMBOL_NAME(sys_read)
- .long SYMBOL_NAME(sys_write)
- .long SYMBOL_NAME(sys_open) /* 5 */
- .long SYMBOL_NAME(sys_close)
- .long SYMBOL_NAME(sys_waitpid)
- .long SYMBOL_NAME(sys_creat)
- .long SYMBOL_NAME(sys_link)
- .long SYMBOL_NAME(sys_unlink) /* 10 */
- .long SYMBOL_NAME(sys_execve)
- .long SYMBOL_NAME(sys_chdir)
- .long SYMBOL_NAME(sys_time)
- .long SYMBOL_NAME(sys_mknod)
- .long SYMBOL_NAME(sys_chmod) /* 15 */
- .long SYMBOL_NAME(sys_lchown16)
- .long SYMBOL_NAME(sys_ni_syscall) /* old
break syscall holder */
- .long SYMBOL_NAME(sys_stat)
- .long SYMBOL_NAME(sys_lseek)
- .long SYMBOL_NAME(sys_getpid) /* 20 */
- .long SYMBOL_NAME(sys_mount)
- .long SYMBOL_NAME(sys_oldumount)
- .long SYMBOL_NAME(sys_setuid16)
- .long SYMBOL_NAME(sys_getuid16)
- .long SYMBOL_NAME(sys_stime) /* 25 */
- .long SYMBOL_NAME(sys_ptrace)
- .long SYMBOL_NAME(sys_alarm)
- .long SYMBOL_NAME(sys_fstat)
- .long SYMBOL_NAME(sys_pause)
- .long SYMBOL_NAME(sys_utime) /* 30 */
- .long SYMBOL_NAME(sys_ni_syscall) /* old
stty syscall holder */
- .long SYMBOL_NAME(sys_ni_syscall) /* old
gtty syscall holder */
- .long SYMBOL_NAME(sys_access)
- .long SYMBOL_NAME(sys_nice)
- .long SYMBOL_NAME(sys_ni_syscall) /* 35 */ /* old
ftime syscall holder */
- .long SYMBOL_NAME(sys_sync)
- .long SYMBOL_NAME(sys_kill)
- .long SYMBOL_NAME(sys_rename)
- .long SYMBOL_NAME(sys_mkdir)
- .long SYMBOL_NAME(sys_rmdir) /* 40 */
- .long SYMBOL_NAME(sys_dup)
- .long SYMBOL_NAME(sys_pipe)
- .long SYMBOL_NAME(sys_times)
- .long SYMBOL_NAME(sys_ni_syscall) /* old
prof syscall holder */
- .long SYMBOL_NAME(sys_brk) /* 45 */
- .long SYMBOL_NAME(sys_setgid16)
- .long SYMBOL_NAME(sys_getgid16)
- .long SYMBOL_NAME(sys_signal)
- .long SYMBOL_NAME(sys_geteuid16)
- .long SYMBOL_NAME(sys_getegid16) /* 50 */
- .long SYMBOL_NAME(sys_acct)
- .long SYMBOL_NAME(sys_umount) /*
recycled never used phys() */
- .long SYMBOL_NAME(sys_ni_syscall) /* old
lock syscall holder */
- .long SYMBOL_NAME(sys_ioctl)
- .long SYMBOL_NAME(sys_fcntl) /* 55 */
- .long SYMBOL_NAME(sys_ni_syscall) /* old
mpx syscall holder */
- .long SYMBOL_NAME(sys_setpgid)
- .long SYMBOL_NAME(sys_ni_syscall) /* old
ulimit syscall holder */
- .long SYMBOL_NAME(sys_olduname)
- .long SYMBOL_NAME(sys_umask) /* 60 */
- .long SYMBOL_NAME(sys_chroot)
- .long SYMBOL_NAME(sys_ustat)
- .long SYMBOL_NAME(sys_dup2)
- .long SYMBOL_NAME(sys_getppid)
- .long SYMBOL_NAME(sys_getpgrp) /* 65 */
- .long SYMBOL_NAME(sys_setsid)
- .long SYMBOL_NAME(sys_sigaction)
- .long SYMBOL_NAME(sys_sgetmask)
- .long SYMBOL_NAME(sys_ssetmask)
- .long SYMBOL_NAME(sys_setreuid16) /* 70 */
- .long SYMBOL_NAME(sys_setregid16)
- .long SYMBOL_NAME(sys_sigsuspend)
- .long SYMBOL_NAME(sys_sigpending)
- .long SYMBOL_NAME(sys_sethostname)
- .long SYMBOL_NAME(sys_setrlimit) /* 75 */
- .long SYMBOL_NAME(sys_old_getrlimit)
- .long SYMBOL_NAME(sys_getrusage)
- .long SYMBOL_NAME(sys_gettimeofday)
- .long SYMBOL_NAME(sys_settimeofday)
- .long SYMBOL_NAME(sys_getgroups16) /* 80 */
- .long SYMBOL_NAME(sys_setgroups16)
- .long SYMBOL_NAME(old_select)
- .long SYMBOL_NAME(sys_symlink)
- .long SYMBOL_NAME(sys_lstat)
- .long SYMBOL_NAME(sys_readlink) /* 85 */
- .long SYMBOL_NAME(sys_uselib)
- .long SYMBOL_NAME(sys_swapon)
- .long SYMBOL_NAME(sys_reboot)
- .long SYMBOL_NAME(old_readdir)
- .long SYMBOL_NAME(old_mmap) /* 90 */
- .long SYMBOL_NAME(sys_munmap)
- .long SYMBOL_NAME(sys_truncate)
- .long SYMBOL_NAME(sys_ftruncate)
- .long SYMBOL_NAME(sys_fchmod)
- .long SYMBOL_NAME(sys_fchown16) /* 95 */
- .long SYMBOL_NAME(sys_getpriority)
- .long SYMBOL_NAME(sys_setpriority)
- .long SYMBOL_NAME(sys_ni_syscall) /* old
profil syscall holder */
- .long SYMBOL_NAME(sys_statfs)
- .long SYMBOL_NAME(sys_fstatfs) /* 100 */
- .long SYMBOL_NAME(sys_ioperm)
- .long SYMBOL_NAME(sys_socketcall)
- .long SYMBOL_NAME(sys_syslog)
- .long SYMBOL_NAME(sys_setitimer)
- .long SYMBOL_NAME(sys_getitimer) /* 105 */
- .long SYMBOL_NAME(sys_newstat)
- .long SYMBOL_NAME(sys_newlstat)
- .long SYMBOL_NAME(sys_newfstat)
- .long SYMBOL_NAME(sys_uname)
- .long SYMBOL_NAME(sys_iopl) /* 110 */
- .long SYMBOL_NAME(sys_vhangup)
- .long SYMBOL_NAME(sys_ni_syscall) /* old "idle" system call */
- .long SYMBOL_NAME(sys_ni_syscall) /* was VM86 */
- .long SYMBOL_NAME(sys_wait4)
- .long SYMBOL_NAME(sys_swapoff) /* 115 */
- .long SYMBOL_NAME(sys_sysinfo)
- .long SYMBOL_NAME(sys_ipc)
- .long SYMBOL_NAME(sys_fsync)
- .long SYMBOL_NAME(sys_sigreturn)
- .long SYMBOL_NAME(sys_clone) /* 120 */
- .long SYMBOL_NAME(sys_setdomainname)
- .long SYMBOL_NAME(sys_newuname)
- .long SYMBOL_NAME(sys_modify_ldt)
- .long SYMBOL_NAME(sys_adjtimex)
- .long SYMBOL_NAME(sys_mprotect) /* 125 */
- .long SYMBOL_NAME(sys_sigprocmask)
- .long SYMBOL_NAME(sys_create_module)
- .long SYMBOL_NAME(sys_init_module)
- .long SYMBOL_NAME(sys_delete_module)
- .long SYMBOL_NAME(sys_get_kernel_syms) /* 130 */
- .long SYMBOL_NAME(sys_quotactl)
- .long SYMBOL_NAME(sys_getpgid)
- .long SYMBOL_NAME(sys_fchdir)
- .long SYMBOL_NAME(sys_bdflush)
- .long SYMBOL_NAME(sys_sysfs) /* 135 */
- .long SYMBOL_NAME(sys_personality)
- .long SYMBOL_NAME(sys_ni_syscall) /* for afs_syscall */
- .long SYMBOL_NAME(sys_setfsuid16)
- .long SYMBOL_NAME(sys_setfsgid16)
- .long SYMBOL_NAME(sys_llseek) /* 140 */
- .long SYMBOL_NAME(sys_getdents)
- .long SYMBOL_NAME(sys_select)
- .long SYMBOL_NAME(sys_flock)
- .long SYMBOL_NAME(sys_msync)
- .long SYMBOL_NAME(sys_readv) /* 145 */
- .long SYMBOL_NAME(sys_writev)
- .long SYMBOL_NAME(sys_getsid)
- .long SYMBOL_NAME(sys_fdatasync)
- .long SYMBOL_NAME(sys_sysctl)
- .long SYMBOL_NAME(sys_mlock) /* 150 */
- .long SYMBOL_NAME(sys_munlock)
- .long SYMBOL_NAME(sys_mlockall)
- .long SYMBOL_NAME(sys_munlockall)
- .long SYMBOL_NAME(sys_sched_setparam)
- .long SYMBOL_NAME(sys_sched_getparam) /* 155 */
- .long SYMBOL_NAME(sys_sched_setscheduler)
- .long SYMBOL_NAME(sys_sched_getscheduler)
- .long SYMBOL_NAME(sys_sched_yield)
- .long SYMBOL_NAME(sys_sched_get_priority_max)
- .long SYMBOL_NAME(sys_sched_get_priority_min) /* 160 */
- .long SYMBOL_NAME(sys_sched_rr_get_interval)
- .long SYMBOL_NAME(sys_nanosleep)
- .long SYMBOL_NAME(sys_mremap)
- .long SYMBOL_NAME(sys_setresuid16)
- .long SYMBOL_NAME(sys_getresuid16) /* 165 */
- .long SYMBOL_NAME(sys_ni_syscall) /* was VM86 */
- .long SYMBOL_NAME(sys_query_module)
- .long SYMBOL_NAME(sys_poll)
- .long SYMBOL_NAME(sys_nfsservctl)
- .long SYMBOL_NAME(sys_setresgid16) /* 170 */
- .long SYMBOL_NAME(sys_getresgid16)
- .long SYMBOL_NAME(sys_prctl)
- .long SYMBOL_NAME(sys_rt_sigreturn)
- .long SYMBOL_NAME(sys_rt_sigaction)
- .long SYMBOL_NAME(sys_rt_sigprocmask) /* 175 */
- .long SYMBOL_NAME(sys_rt_sigpending)
- .long SYMBOL_NAME(sys_rt_sigtimedwait)
- .long SYMBOL_NAME(sys_rt_sigqueueinfo)
- .long SYMBOL_NAME(sys_rt_sigsuspend)
- .long SYMBOL_NAME(sys_pread) /* 180 */
- .long SYMBOL_NAME(sys_pwrite)
- .long SYMBOL_NAME(sys_chown16)
- .long SYMBOL_NAME(sys_getcwd)
- .long SYMBOL_NAME(sys_capget)
- .long SYMBOL_NAME(sys_capset) /* 185 */
- .long SYMBOL_NAME(sys_sigaltstack)
- .long SYMBOL_NAME(sys_sendfile)
- .long SYMBOL_NAME(sys_ni_syscall) /* streams1 */
- .long SYMBOL_NAME(sys_ni_syscall) /* streams2 */
- .long SYMBOL_NAME(sys_vfork) /* 190 */
- .long SYMBOL_NAME(sys_getrlimit)
- .long SYMBOL_NAME(sys_mmap2)
- .long SYMBOL_NAME(sys_truncate64)
- .long SYMBOL_NAME(sys_ftruncate64)
- .long SYMBOL_NAME(sys_stat64) /* 195 */
- .long SYMBOL_NAME(sys_lstat64)
- .long SYMBOL_NAME(sys_fstat64)
- .long SYMBOL_NAME(sys_lchown)
- .long SYMBOL_NAME(sys_getuid)
- .long SYMBOL_NAME(sys_getgid) /* 200 */
- .long SYMBOL_NAME(sys_geteuid)
- .long SYMBOL_NAME(sys_getegid)
- .long SYMBOL_NAME(sys_setreuid)
- .long SYMBOL_NAME(sys_setregid)
- .long SYMBOL_NAME(sys_getgroups) /* 205 */
- .long SYMBOL_NAME(sys_setgroups)
- .long SYMBOL_NAME(sys_fchown)
- .long SYMBOL_NAME(sys_setresuid)
- .long SYMBOL_NAME(sys_getresuid)
- .long SYMBOL_NAME(sys_setresgid) /* 210 */
- .long SYMBOL_NAME(sys_getresgid)
- .long SYMBOL_NAME(sys_chown)
- .long SYMBOL_NAME(sys_setuid)
- .long SYMBOL_NAME(sys_setgid)
- .long SYMBOL_NAME(sys_setfsuid) /* 215 */
- .long SYMBOL_NAME(sys_setfsgid)
- .long SYMBOL_NAME(sys_pivot_root)
- .long SYMBOL_NAME(sys_mincore)
- .long SYMBOL_NAME(sys_madvise)
- .long SYMBOL_NAME(sys_getdents64) /* 220 */
- .long SYMBOL_NAME(sys_fcntl64)
- .long SYMBOL_NAME(sys_ni_syscall) /* reserved for TUX */
- .long SYMBOL_NAME(sys_ni_syscall) /* Reserved for Security */
- .long SYMBOL_NAME(sys_gettid)
- .long SYMBOL_NAME(sys_readahead) /* 225 */
- .long SYMBOL_NAME(sys_setxattr)
- .long SYMBOL_NAME(sys_lsetxattr)
- .long SYMBOL_NAME(sys_fsetxattr)
- .long SYMBOL_NAME(sys_getxattr)
- .long SYMBOL_NAME(sys_lgetxattr) /* 230 */
- .long SYMBOL_NAME(sys_fgetxattr)
- .long SYMBOL_NAME(sys_listxattr)
- .long SYMBOL_NAME(sys_llistxattr)
- .long SYMBOL_NAME(sys_flistxattr)
- .long SYMBOL_NAME(sys_removexattr) /* 235 */
- .long SYMBOL_NAME(sys_lremovexattr)
- .long SYMBOL_NAME(sys_fremovexattr)
- .long SYMBOL_NAME(sys_tkill)
- .long SYMBOL_NAME(sys_sendfile64)
- .long SYMBOL_NAME(sys_ni_syscall) /* 240 reserved for futex */
- .long SYMBOL_NAME(sys_ni_syscall) /* reserved for
sched_setaffinity */
- .long SYMBOL_NAME(sys_ni_syscall) /* reserved for
sched_getaffinity */
- .long SYMBOL_NAME(sys_ni_syscall) /* sys_set_thread_area */
- .long SYMBOL_NAME(sys_ni_syscall) /* sys_get_thread_area */
- .long SYMBOL_NAME(sys_ni_syscall) /* 245 sys_io_setup */
- .long SYMBOL_NAME(sys_ni_syscall) /* sys_io_destroy */
- .long SYMBOL_NAME(sys_ni_syscall) /* sys_io_getevents */
- .long SYMBOL_NAME(sys_ni_syscall) /* sys_io_submit */
- .long SYMBOL_NAME(sys_ni_syscall) /* sys_io_cancel */
- .long SYMBOL_NAME(sys_ni_syscall) /* 250 sys_alloc_hugepages */
- .long SYMBOL_NAME(sys_ni_syscall) /* sys_free_hugepages */
- .long SYMBOL_NAME(sys_ni_syscall) /* sys_exit_group */
- .long SYMBOL_NAME(sys_ni_syscall) /* sys_lookup_dcookie */
- .long SYMBOL_NAME(sys_ni_syscall) /* sys_epoll_create */
- .long SYMBOL_NAME(sys_ni_syscall) /* sys_epoll_ctl 255 */
- .long SYMBOL_NAME(sys_ni_syscall) /* sys_epoll_wait */
- .long SYMBOL_NAME(sys_ni_syscall) /* sys_remap_file_pages */
- .long SYMBOL_NAME(sys_ni_syscall) /* sys_set_tid_address */
-
- .rept NR_syscalls-(.-sys_call_table)/4
- .long SYMBOL_NAME(sys_ni_syscall)
- .endr
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/kernel/head.S
--- a/linux-2.4.30-xen-sparse/arch/xen/kernel/head.S Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,41 +0,0 @@
-
-.section __xen_guest
- .ascii "GUEST_OS=linux,GUEST_VER=2.4,XEN_VER=3.0,VIRT_BASE=0xC0000000"
- .ascii ",LOADER=generic"
- .byte 0
-
-.text
-#include <linux/config.h>
-#include <linux/threads.h>
-#include <linux/linkage.h>
-#include <asm/segment.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/desc.h>
-
-ENTRY(stext)
-ENTRY(_stext)
- cld
- lss stack_start,%esp
- /* Copy the necessary stuff from xen_start_info structure. */
- mov $SYMBOL_NAME(xen_start_info_union),%edi
- mov $128,%ecx
- rep movsl
- jmp SYMBOL_NAME(start_kernel)
-
-ENTRY(stack_start)
- .long SYMBOL_NAME(init_task_union)+8192, __KERNEL_DS
-
-.org 0x1000
-ENTRY(empty_zero_page)
-
-.org 0x2000
-ENTRY(default_ldt)
-
-.org 0x3000
-ENTRY(cpu0_pte_quicklist)
-
-.org 0x3400
-ENTRY(cpu0_pgd_quicklist)
-
-.org 0x3800
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/kernel/i386_ksyms.c
--- a/linux-2.4.30-xen-sparse/arch/xen/kernel/i386_ksyms.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,180 +0,0 @@
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/smp.h>
-#include <linux/user.h>
-#include <linux/elfcore.h>
-#include <linux/mca.h>
-#include <linux/sched.h>
-#include <linux/in6.h>
-#include <linux/interrupt.h>
-#include <linux/smp_lock.h>
-#include <linux/pm.h>
-#include <linux/pci.h>
-#include <linux/apm_bios.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/tty.h>
-
-#include <asm/semaphore.h>
-#include <asm/processor.h>
-#include <asm/i387.h>
-#include <asm/uaccess.h>
-#include <asm/checksum.h>
-#include <asm/io.h>
-#include <asm/hardirq.h>
-#include <asm/delay.h>
-#include <asm/irq.h>
-#include <asm/mmx.h>
-#include <asm/desc.h>
-#include <asm/pgtable.h>
-#include <asm/pgalloc.h>
-
-extern void dump_thread(struct pt_regs *, struct user *);
-extern spinlock_t rtc_lock;
-
-#if defined(CONFIG_APMXXX) || defined(CONFIG_APM_MODULEXXX)
-extern void machine_real_restart(unsigned char *, int);
-EXPORT_SYMBOL(machine_real_restart);
-extern void default_idle(void);
-EXPORT_SYMBOL(default_idle);
-#endif
-
-#ifdef CONFIG_SMP
-extern void FASTCALL( __write_lock_failed(rwlock_t *rw));
-extern void FASTCALL( __read_lock_failed(rwlock_t *rw));
-#endif
-
-#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_HD) ||
defined(CONFIG_BLK_DEV_IDE_MODULE) || defined(CONFIG_BLK_DEV_HD_MODULE)
-extern struct drive_info_struct drive_info;
-EXPORT_SYMBOL(drive_info);
-#endif
-
-// XXX extern unsigned long get_cmos_time(void);
-
-/* platform dependent support */
-EXPORT_SYMBOL(boot_cpu_data);
-EXPORT_SYMBOL(dump_thread);
-EXPORT_SYMBOL(dump_fpu);
-EXPORT_SYMBOL(dump_extended_fpu);
-EXPORT_SYMBOL(__ioremap);
-EXPORT_SYMBOL(iounmap);
-EXPORT_SYMBOL(enable_irq);
-EXPORT_SYMBOL(disable_irq);
-EXPORT_SYMBOL(disable_irq_nosync);
-EXPORT_SYMBOL(probe_irq_mask);
-EXPORT_SYMBOL(kernel_thread);
-EXPORT_SYMBOL(pm_idle);
-EXPORT_SYMBOL(pm_power_off);
-EXPORT_SYMBOL(apm_info);
-//EXPORT_SYMBOL(gdt);
-EXPORT_SYMBOL(empty_zero_page);
-EXPORT_SYMBOL(phys_to_machine_mapping);
-
-
-#ifdef CONFIG_DEBUG_IOVIRT
-EXPORT_SYMBOL(__io_virt_debug);
-#endif
-
-EXPORT_SYMBOL_NOVERS(__down_failed);
-EXPORT_SYMBOL_NOVERS(__down_failed_interruptible);
-EXPORT_SYMBOL_NOVERS(__down_failed_trylock);
-EXPORT_SYMBOL_NOVERS(__up_wakeup);
-/* Networking helper routines. */
-EXPORT_SYMBOL(csum_partial_copy_generic);
-/* Delay loops */
-EXPORT_SYMBOL(__ndelay);
-EXPORT_SYMBOL(__udelay);
-EXPORT_SYMBOL(__delay);
-EXPORT_SYMBOL(__const_udelay);
-
-EXPORT_SYMBOL_NOVERS(__get_user_1);
-EXPORT_SYMBOL_NOVERS(__get_user_2);
-EXPORT_SYMBOL_NOVERS(__get_user_4);
-
-EXPORT_SYMBOL(strtok);
-EXPORT_SYMBOL(strpbrk);
-EXPORT_SYMBOL(strstr);
-
-EXPORT_SYMBOL(strncpy_from_user);
-EXPORT_SYMBOL(__strncpy_from_user);
-EXPORT_SYMBOL(clear_user);
-EXPORT_SYMBOL(__clear_user);
-EXPORT_SYMBOL(__generic_copy_from_user);
-EXPORT_SYMBOL(__generic_copy_to_user);
-EXPORT_SYMBOL(strnlen_user);
-
-
-EXPORT_SYMBOL(pci_alloc_consistent);
-EXPORT_SYMBOL(pci_free_consistent);
-
-#ifdef CONFIG_PCI
-EXPORT_SYMBOL(pcibios_penalize_isa_irq);
-EXPORT_SYMBOL(pci_mem_start);
-#endif
-
-
-#ifdef CONFIG_X86_USE_3DNOW
-EXPORT_SYMBOL(_mmx_memcpy);
-EXPORT_SYMBOL(mmx_clear_page);
-EXPORT_SYMBOL(mmx_copy_page);
-#endif
-
-#ifdef CONFIG_SMP
-EXPORT_SYMBOL(cpu_data);
-EXPORT_SYMBOL(kernel_flag_cacheline);
-EXPORT_SYMBOL(smp_num_cpus);
-EXPORT_SYMBOL(cpu_online_map);
-EXPORT_SYMBOL_NOVERS(__write_lock_failed);
-EXPORT_SYMBOL_NOVERS(__read_lock_failed);
-
-/* Global SMP irq stuff */
-EXPORT_SYMBOL(synchronize_irq);
-EXPORT_SYMBOL(global_irq_holder);
-EXPORT_SYMBOL(__global_cli);
-EXPORT_SYMBOL(__global_sti);
-EXPORT_SYMBOL(__global_save_flags);
-EXPORT_SYMBOL(__global_restore_flags);
-EXPORT_SYMBOL(smp_call_function);
-
-/* TLB flushing */
-EXPORT_SYMBOL(flush_tlb_page);
-
-/* HT support */
-EXPORT_SYMBOL(smp_num_siblings);
-EXPORT_SYMBOL(cpu_sibling_map);
-#endif
-
-#ifdef CONFIG_X86_IO_APIC
-EXPORT_SYMBOL(IO_APIC_get_PCI_irq_vector);
-#endif
-
-#ifdef CONFIG_VT
-EXPORT_SYMBOL(screen_info);
-#endif
-
-EXPORT_SYMBOL(get_wchan);
-
-EXPORT_SYMBOL(rtc_lock);
-
-#undef memcpy
-#undef memset
-extern void * memset(void *,int,__kernel_size_t);
-extern void * memcpy(void *,const void *,__kernel_size_t);
-EXPORT_SYMBOL_NOVERS(memcpy);
-EXPORT_SYMBOL_NOVERS(memset);
-
-#ifdef CONFIG_HAVE_DEC_LOCK
-EXPORT_SYMBOL(atomic_dec_and_lock);
-#endif
-
-#ifdef CONFIG_MULTIQUAD
-EXPORT_SYMBOL(xquad_portio);
-#endif
-
-#include <asm/xen_proc.h>
-EXPORT_SYMBOL(create_xen_proc_entry);
-EXPORT_SYMBOL(remove_xen_proc_entry);
-
-EXPORT_SYMBOL(evtchn_do_upcall);
-EXPORT_SYMBOL(force_evtchn_callback);
-EXPORT_SYMBOL(HYPERVISOR_shared_info);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/kernel/irq.c
--- a/linux-2.4.30-xen-sparse/arch/xen/kernel/irq.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,1242 +0,0 @@
-/*
- * linux/arch/i386/kernel/irq.c
- *
- * Copyright (C) 1992, 1998 Linus Torvalds, Ingo Molnar
- *
- * This file contains the code used by various IRQ handling routines:
- * asking for different IRQ's should be done through these routines
- * instead of just grabbing them. Thus setups with different IRQ numbers
- * shouldn't result in any weird surprises, and installing new handlers
- * should be easier.
- */
-
-/*
- * (mostly architecture independent, will move to kernel/irq.c in 2.5.)
- *
- * IRQs are in fact implemented a bit like signal handlers for the kernel.
- * Naturally it's not a 1:1 relation, but there are similarities.
- */
-
-#include <linux/config.h>
-#include <linux/ptrace.h>
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/ioport.h>
-#include <linux/interrupt.h>
-#include <linux/timex.h>
-#include <linux/slab.h>
-#include <linux/random.h>
-#include <linux/smp_lock.h>
-#include <linux/init.h>
-#include <linux/kernel_stat.h>
-#include <linux/irq.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-
-#include <asm/atomic.h>
-#include <asm/io.h>
-#include <asm/smp.h>
-#include <asm/system.h>
-#include <asm/bitops.h>
-#include <asm/uaccess.h>
-#include <asm/pgalloc.h>
-#include <asm/delay.h>
-#include <asm/desc.h>
-#include <asm/irq.h>
-
-
-
-/*
- * Linux has a controller-independent x86 interrupt architecture.
- * every controller has a 'controller-template', that is used
- * by the main code to do the right thing. Each driver-visible
- * interrupt source is transparently wired to the apropriate
- * controller. Thus drivers need not be aware of the
- * interrupt-controller.
- *
- * Various interrupt controllers we handle: 8259 PIC, SMP IO-APIC,
- * PIIX4's internal 8259 PIC and SGI's Visual Workstation Cobalt (IO-)APIC.
- * (IO-APICs assumed to be messaging to Pentium local-APICs)
- *
- * the code is designed to be easily extended with new/different
- * interrupt controllers, without having to do assembly magic.
- */
-
-/*
- * Controller mappings for all interrupt sources:
- */
-irq_desc_t irq_desc[NR_IRQS] __cacheline_aligned =
- { [0 ... NR_IRQS-1] = { 0, &no_irq_type, NULL, 0, SPIN_LOCK_UNLOCKED}};
-
-static void register_irq_proc (unsigned int irq);
-
-/*
- * Special irq handlers.
- */
-
-void no_action(int cpl, void *dev_id, struct pt_regs *regs) { }
-
-/*
- * Generic no controller code
- */
-
-static void enable_none(unsigned int irq) { }
-static unsigned int startup_none(unsigned int irq) { return 0; }
-static void disable_none(unsigned int irq) { }
-static void ack_none(unsigned int irq)
-{
-/*
- * 'what should we do if we get a hw irq event on an illegal vector'.
- * each architecture has to answer this themselves, it doesnt deserve
- * a generic callback i think.
- */
-#if CONFIG_X86
- printk("unexpected IRQ trap at vector %02x\n", irq);
-#ifdef CONFIG_X86_LOCAL_APIC
- /*
- * Currently unexpected vectors happen only on SMP and APIC.
- * We _must_ ack these because every local APIC has only N
- * irq slots per priority level, and a 'hanging, unacked' IRQ
- * holds up an irq slot - in excessive cases (when multiple
- * unexpected vectors occur) that might lock up the APIC
- * completely.
- */
- ack_APIC_irq();
-#endif
-#endif
-}
-
-/* startup is the same as "enable", shutdown is same as "disable" */
-#define shutdown_none disable_none
-#define end_none enable_none
-
-struct hw_interrupt_type no_irq_type = {
- "none",
- startup_none,
- shutdown_none,
- enable_none,
- disable_none,
- ack_none,
- end_none
-};
-
-atomic_t irq_err_count;
-#ifdef CONFIG_X86_IO_APIC
-#ifdef APIC_MISMATCH_DEBUG
-atomic_t irq_mis_count;
-#endif
-#endif
-
-/*
- * Generic, controller-independent functions:
- */
-
-int show_interrupts(struct seq_file *p, void *v)
-{
- int i, j;
- struct irqaction * action;
-
- seq_printf(p, " ");
- for (j=0; j<smp_num_cpus; j++)
- seq_printf(p, "CPU%d ",j);
- seq_putc(p,'\n');
-
- for (i = 0 ; i < NR_IRQS ; i++) {
- action = irq_desc[i].action;
- if (!action)
- continue;
- seq_printf(p, "%3d: ",i);
-#ifndef CONFIG_SMP
- seq_printf(p, "%10u ", kstat_irqs(i));
-#else
- for (j = 0; j < smp_num_cpus; j++)
- seq_printf(p, "%10u ",
- kstat.irqs[cpu_logical_map(j)][i]);
-#endif
- seq_printf(p, " %14s", irq_desc[i].handler->typename);
- seq_printf(p, " %s", action->name);
-
- for (action=action->next; action; action = action->next)
- seq_printf(p, ", %s", action->name);
- seq_putc(p,'\n');
- }
- seq_printf(p, "NMI: ");
- for (j = 0; j < smp_num_cpus; j++)
- seq_printf(p, "%10u ",
- nmi_count(cpu_logical_map(j)));
- seq_printf(p, "\n");
-#if CONFIG_X86_LOCAL_APIC
- seq_printf(p, "LOC: ");
- for (j = 0; j < smp_num_cpus; j++)
- seq_printf(p, "%10u ",
- apic_timer_irqs[cpu_logical_map(j)]);
- seq_printf(p, "\n");
-#endif
- seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
-#ifdef CONFIG_X86_IO_APIC
-#ifdef APIC_MISMATCH_DEBUG
- seq_printf(p, "MIS: %10u\n", atomic_read(&irq_mis_count));
-#endif
-#endif
-
- return 0;
-}
-
-
-/*
- * Global interrupt locks for SMP. Allow interrupts to come in on any
- * CPU, yet make cli/sti act globally to protect critical regions..
- */
-
-#ifdef CONFIG_SMP
-unsigned char global_irq_holder = NO_PROC_ID;
-unsigned volatile long global_irq_lock; /* pendantic: long for set_bit --RR */
-
-extern void show_stack(unsigned long* esp);
-
-static void show(char * str)
-{
- int i;
- int cpu = smp_processor_id();
-
- printk("\n%s, CPU %d:\n", str, cpu);
- printk("irq: %d [",irqs_running());
- for(i=0;i < smp_num_cpus;i++)
- printk(" %d",local_irq_count(i));
- printk(" ]\nbh: %d [",spin_is_locked(&global_bh_lock) ? 1 : 0);
- for(i=0;i < smp_num_cpus;i++)
- printk(" %d",local_bh_count(i));
-
- printk(" ]\nStack dumps:");
- for(i = 0; i < smp_num_cpus; i++) {
- unsigned long esp;
- if (i == cpu)
- continue;
- printk("\nCPU %d:",i);
- esp = init_tss[i].esp0;
- if (!esp) {
- /* tss->esp0 is set to NULL in cpu_init(),
- * it's initialized when the cpu returns to user
- * space. -- manfreds
- */
- printk(" <unknown> ");
- continue;
- }
- esp &= ~(THREAD_SIZE-1);
- esp += sizeof(struct task_struct);
- show_stack((void*)esp);
- }
- printk("\nCPU %d:",cpu);
- show_stack(NULL);
- printk("\n");
-}
-
-#define MAXCOUNT 100000000
-
-/*
- * I had a lockup scenario where a tight loop doing
- * spin_unlock()/spin_lock() on CPU#1 was racing with
- * spin_lock() on CPU#0. CPU#0 should have noticed spin_unlock(), but
- * apparently the spin_unlock() information did not make it
- * through to CPU#0 ... nasty, is this by design, do we have to limit
- * 'memory update oscillation frequency' artificially like here?
- *
- * Such 'high frequency update' races can be avoided by careful design, but
- * some of our major constructs like spinlocks use similar techniques,
- * it would be nice to clarify this issue. Set this define to 0 if you
- * want to check whether your system freezes. I suspect the delay done
- * by SYNC_OTHER_CORES() is in correlation with 'snooping latency', but
- * i thought that such things are guaranteed by design, since we use
- * the 'LOCK' prefix.
- */
-#define SUSPECTED_CPU_OR_CHIPSET_BUG_WORKAROUND 0
-
-#if SUSPECTED_CPU_OR_CHIPSET_BUG_WORKAROUND
-# define SYNC_OTHER_CORES(x) udelay(x+1)
-#else
-/*
- * We have to allow irqs to arrive between __sti and __cli
- */
-# define SYNC_OTHER_CORES(x) __asm__ __volatile__ ("nop")
-#endif
-
-static inline void wait_on_irq(int cpu)
-{
- int count = MAXCOUNT;
-
- for (;;) {
-
- /*
- * Wait until all interrupts are gone. Wait
- * for bottom half handlers unless we're
- * already executing in one..
- */
- if (!irqs_running())
- if (local_bh_count(cpu) ||
!spin_is_locked(&global_bh_lock))
- break;
-
- /* Duh, we have to loop. Release the lock to avoid deadlocks */
- clear_bit(0,&global_irq_lock);
-
- for (;;) {
- if (!--count) {
- show("wait_on_irq");
- count = ~0;
- }
- __sti();
- SYNC_OTHER_CORES(cpu);
- __cli();
- if (irqs_running())
- continue;
- if (global_irq_lock)
- continue;
- if (!local_bh_count(cpu) &&
spin_is_locked(&global_bh_lock))
- continue;
- if (!test_and_set_bit(0,&global_irq_lock))
- break;
- }
- }
-}
-
-/*
- * This is called when we want to synchronize with
- * interrupts. We may for example tell a device to
- * stop sending interrupts: but to make sure there
- * are no interrupts that are executing on another
- * CPU we need to call this function.
- */
-void synchronize_irq(void)
-{
- if (irqs_running()) {
- /* Stupid approach */
- cli();
- sti();
- }
-}
-
-static inline void get_irqlock(int cpu)
-{
- if (test_and_set_bit(0,&global_irq_lock)) {
- /* do we already hold the lock? */
- if ((unsigned char) cpu == global_irq_holder)
- return;
- /* Uhhuh.. Somebody else got it. Wait.. */
- do {
- do {
- rep_nop();
- } while (test_bit(0,&global_irq_lock));
- } while (test_and_set_bit(0,&global_irq_lock));
- }
- /*
- * We also to make sure that nobody else is running
- * in an interrupt context.
- */
- wait_on_irq(cpu);
-
- /*
- * Ok, finally..
- */
- global_irq_holder = cpu;
-}
-
-/*
- * A global "cli()" while in an interrupt context
- * turns into just a local cli(). Interrupts
- * should use spinlocks for the (very unlikely)
- * case that they ever want to protect against
- * each other.
- *
- * If we already have local interrupts disabled,
- * this will not turn a local disable into a
- * global one (problems with spinlocks: this makes
- * save_flags+cli+sti usable inside a spinlock).
- */
-void __global_cli(void)
-{
- unsigned int flags;
-
- __save_flags(flags);
- if (!flags) {
- int cpu = smp_processor_id();
- __cli();
- if (!local_irq_count(cpu))
- get_irqlock(cpu);
- }
-}
-
-void __global_sti(void)
-{
- int cpu = smp_processor_id();
-
- if (!local_irq_count(cpu))
- release_irqlock(cpu);
- __sti();
-}
-
-/*
- * SMP flags value to restore to:
- * 0 - global cli
- * 1 - global sti
- * 2 - local cli
- * 3 - local sti
- */
-unsigned long __global_save_flags(void)
-{
- int retval;
- int local_enabled;
- unsigned long flags;
- int cpu = smp_processor_id();
-
- __save_flags(flags);
- local_enabled = !flags;
- /* default to local */
- retval = 2 + local_enabled;
-
- /* check for global flags if we're not in an interrupt */
- if (!local_irq_count(cpu)) {
- if (local_enabled)
- retval = 1;
- if (global_irq_holder == cpu)
- retval = 0;
- }
- return retval;
-}
-
-void __global_restore_flags(unsigned long flags)
-{
- switch (flags) {
- case 0:
- __global_cli();
- break;
- case 1:
- __global_sti();
- break;
- case 2:
- __cli();
- break;
- case 3:
- __sti();
- break;
- default:
- printk("global_restore_flags: %08lx (%08lx)\n",
- flags, (&flags)[-1]);
- }
-}
-
-#endif
-
-/*
- * This should really return information about whether
- * we should do bottom half handling etc. Right now we
- * end up _always_ checking the bottom half, which is a
- * waste of time and is not what some drivers would
- * prefer.
- */
-int handle_IRQ_event(unsigned int irq, struct pt_regs * regs, struct irqaction
* action)
-{
- int status;
- int cpu = smp_processor_id();
-
- irq_enter(cpu, irq);
-
- status = 1; /* Force the "do bottom halves" bit */
-
- if (!(action->flags & SA_INTERRUPT))
- __sti();
-
- do {
- status |= action->flags;
- action->handler(irq, action->dev_id, regs);
- action = action->next;
- } while (action);
- if (status & SA_SAMPLE_RANDOM)
- add_interrupt_randomness(irq);
- __cli();
-
- irq_exit(cpu, irq);
-
- return status;
-}
-
-/*
- * Generic enable/disable code: this just calls
- * down into the PIC-specific version for the actual
- * hardware disable after having gotten the irq
- * controller lock.
- */
-
-/**
- * disable_irq_nosync - disable an irq without waiting
- * @irq: Interrupt to disable
- *
- * Disable the selected interrupt line. Disables and Enables are
- * nested.
- * Unlike disable_irq(), this function does not ensure existing
- * instances of the IRQ handler have completed before returning.
- *
- * This function may be called from IRQ context.
- */
-
-inline void disable_irq_nosync(unsigned int irq)
-{
- irq_desc_t *desc = irq_desc + irq;
- unsigned long flags;
-
- spin_lock_irqsave(&desc->lock, flags);
- if (!desc->depth++) {
- desc->status |= IRQ_DISABLED;
- desc->handler->disable(irq);
- }
- spin_unlock_irqrestore(&desc->lock, flags);
-}
-
-/**
- * disable_irq - disable an irq and wait for completion
- * @irq: Interrupt to disable
- *
- * Disable the selected interrupt line. Enables and Disables are
- * nested.
- * This function waits for any pending IRQ handlers for this interrupt
- * to complete before returning. If you use this function while
- * holding a resource the IRQ handler may need you will deadlock.
- *
- * This function may be called - with care - from IRQ context.
- */
-
-void disable_irq(unsigned int irq)
-{
- disable_irq_nosync(irq);
-
- if (!local_irq_count(smp_processor_id())) {
- do {
- barrier();
- cpu_relax();
- } while (irq_desc[irq].status & IRQ_INPROGRESS);
- }
-}
-
-/**
- * enable_irq - enable handling of an irq
- * @irq: Interrupt to enable
- *
- * Undoes the effect of one call to disable_irq(). If this
- * matches the last disable, processing of interrupts on this
- * IRQ line is re-enabled.
- *
- * This function may be called from IRQ context.
- */
-
-void enable_irq(unsigned int irq)
-{
- irq_desc_t *desc = irq_desc + irq;
- unsigned long flags;
-
- spin_lock_irqsave(&desc->lock, flags);
- switch (desc->depth) {
- case 1: {
- unsigned int status = desc->status & ~IRQ_DISABLED;
- desc->status = status;
- if ((status & (IRQ_PENDING | IRQ_REPLAY)) == IRQ_PENDING) {
- desc->status = status | IRQ_REPLAY;
- hw_resend_irq(desc->handler,irq);
- }
- desc->handler->enable(irq);
- /* fall-through */
- }
- default:
- desc->depth--;
- break;
- case 0:
- printk("enable_irq(%u) unbalanced from %p\n", irq,
- __builtin_return_address(0));
- }
- spin_unlock_irqrestore(&desc->lock, flags);
-}
-
-/*
- * do_IRQ handles all normal device IRQ's (the special
- * SMP cross-CPU interrupts have their own specific
- * handlers).
- */
-asmlinkage unsigned int do_IRQ(struct pt_regs *regs)
-{
- /*
- * We ack quickly, we don't want the irq controller
- * thinking we're snobs just because some other CPU has
- * disabled global interrupts (we have already done the
- * INT_ACK cycles, it's too late to try to pretend to the
- * controller that we aren't taking the interrupt).
- *
- * 0 return value means that this irq is already being
- * handled by some other CPU. (or is disabled)
- */
- int irq = regs->orig_eax & 0xff; /* high bits used in ret_from_ code */
- int cpu = smp_processor_id();
- irq_desc_t *desc = irq_desc + irq;
- struct irqaction * action;
- unsigned int status;
-#ifdef CONFIG_DEBUG_STACKOVERFLOW
- long esp;
-
- /* Debugging check for stack overflow: is there less than 1KB free? */
- __asm__ __volatile__("andl %%esp,%0" : "=r" (esp) : "0" (8191));
- if (unlikely(esp < (sizeof(struct task_struct) + 1024))) {
- extern void show_stack(unsigned long *);
-
- printk("do_IRQ: stack overflow: %ld\n",
- esp - sizeof(struct task_struct));
- __asm__ __volatile__("movl %%esp,%0" : "=r" (esp));
- show_stack((void *)esp);
- }
-#endif
-
- kstat.irqs[cpu][irq]++;
- spin_lock(&desc->lock);
- desc->handler->ack(irq);
- /*
- REPLAY is when Linux resends an IRQ that was dropped earlier
- WAITING is used by probe to mark irqs that are being tested
- */
- status = desc->status & ~(IRQ_REPLAY | IRQ_WAITING);
- status |= IRQ_PENDING; /* we _want_ to handle it */
-
- /*
- * If the IRQ is disabled for whatever reason, we cannot
- * use the action we have.
- */
- action = NULL;
- if (!(status & (IRQ_DISABLED | IRQ_INPROGRESS))) {
- action = desc->action;
- status &= ~IRQ_PENDING; /* we commit to handling */
- status |= IRQ_INPROGRESS; /* we are handling it */
- }
- desc->status = status;
-
- /*
- * If there is no IRQ handler or it was disabled, exit early.
- Since we set PENDING, if another processor is handling
- a different instance of this same irq, the other processor
- will take care of it.
- */
- if (!action)
- goto out;
-
- /*
- * Edge triggered interrupts need to remember
- * pending events.
- * This applies to any hw interrupts that allow a second
- * instance of the same irq to arrive while we are in do_IRQ
- * or in the handler. But the code here only handles the _second_
- * instance of the irq, not the third or fourth. So it is mostly
- * useful for irq hardware that does not mask cleanly in an
- * SMP environment.
- */
- for (;;) {
- spin_unlock(&desc->lock);
- handle_IRQ_event(irq, regs, action);
- spin_lock(&desc->lock);
-
- if (!(desc->status & IRQ_PENDING))
- break;
- desc->status &= ~IRQ_PENDING;
- }
- desc->status &= ~IRQ_INPROGRESS;
-out:
- /*
- * The ->end() handler has to deal with interrupts which got
- * disabled while the handler was running.
- */
- desc->handler->end(irq);
- spin_unlock(&desc->lock);
-
- if (softirq_pending(cpu))
- do_softirq();
- return 1;
-}
-
-/**
- * request_irq - allocate an interrupt line
- * @irq: Interrupt line to allocate
- * @handler: Function to be called when the IRQ occurs
- * @irqflags: Interrupt type flags
- * @devname: An ascii name for the claiming device
- * @dev_id: A cookie passed back to the handler function
- *
- * This call allocates interrupt resources and enables the
- * interrupt line and IRQ handling. From the point this
- * call is made your handler function may be invoked. Since
- * your handler function must clear any interrupt the board
- * raises, you must take care both to initialise your hardware
- * and to set up the interrupt handler in the right order.
- *
- * Dev_id must be globally unique. Normally the address of the
- * device data structure is used as the cookie. Since the handler
- * receives this value it makes sense to use it.
- *
- * If your interrupt is shared you must pass a non NULL dev_id
- * as this is required when freeing the interrupt.
- *
- * Flags:
- *
- * SA_SHIRQ Interrupt is shared
- *
- * SA_INTERRUPT Disable local interrupts while processing
- *
- * SA_SAMPLE_RANDOM The interrupt can be used for entropy
- *
- */
-
-int request_irq(unsigned int irq,
- void (*handler)(int, void *, struct pt_regs *),
- unsigned long irqflags,
- const char * devname,
- void *dev_id)
-{
- int retval;
- struct irqaction * action;
-
-#if 1
- /*
- * Sanity-check: shared interrupts should REALLY pass in
- * a real dev-ID, otherwise we'll have trouble later trying
- * to figure out which interrupt is which (messes up the
- * interrupt freeing logic etc).
- */
- if (irqflags & SA_SHIRQ) {
- if (!dev_id)
- printk("Bad boy: %s (at 0x%x) called us without a
dev_id!\n", devname, (&irq)[-1]);
- }
-#endif
-
- if (irq >= NR_IRQS)
- return -EINVAL;
- if (!handler)
- return -EINVAL;
-
- action = (struct irqaction *)
- kmalloc(sizeof(struct irqaction), GFP_KERNEL);
- if (!action)
- return -ENOMEM;
-
- action->handler = handler;
- action->flags = irqflags;
- action->mask = 0;
- action->name = devname;
- action->next = NULL;
- action->dev_id = dev_id;
-
- retval = setup_irq(irq, action);
- if (retval)
- kfree(action);
- return retval;
-}
-
-/*
- * Internal function to unregister an irqaction - typically used to
- * deallocate special interrupts that are part of the architecture.
- */
-int teardown_irq(unsigned int irq, struct irqaction * old)
-{
- irq_desc_t *desc;
- struct irqaction **p;
- unsigned long flags;
-
- if (irq >= NR_IRQS)
- return -ENOENT;
-
- desc = irq_desc + irq;
- spin_lock_irqsave(&desc->lock,flags);
- p = &desc->action;
- for (;;) {
- struct irqaction * action = *p;
- if (action) {
- struct irqaction **pp = p;
- p = &action->next;
- if (action != old)
- continue;
-
- /* Found it - now remove it from the list of entries */
- *pp = action->next;
- if (!desc->action) {
- desc->status |= IRQ_DISABLED;
- desc->handler->shutdown(irq);
- }
- spin_unlock_irqrestore(&desc->lock,flags);
-
-#ifdef CONFIG_SMP
- /* Wait to make sure it's not being used on another CPU
*/
- while (desc->status & IRQ_INPROGRESS) {
- barrier();
- cpu_relax();
- }
-#endif
- return 0;
- }
- printk("Trying to free free IRQ%d\n",irq);
- spin_unlock_irqrestore(&desc->lock,flags);
- return -ENOENT;
- }
-}
-
-/**
- * free_irq - free an interrupt
- * @irq: Interrupt line to free
- * @dev_id: Device identity to free
- *
- * Remove an interrupt handler. The handler is removed and if the
- * interrupt line is no longer in use by any driver it is disabled.
- * On a shared IRQ the caller must ensure the interrupt is disabled
- * on the card it drives before calling this function. The function
- * does not return until any executing interrupts for this IRQ
- * have completed.
- *
- * This function may be called from interrupt context.
- *
- * Bugs: Attempting to free an irq in a handler for the same irq hangs
- * the machine.
- */
-
-void free_irq(unsigned int irq, void *dev_id)
-{
- irq_desc_t *desc;
- struct irqaction *action;
- unsigned long flags;
-
- if (irq >= NR_IRQS)
- return;
-
- desc = irq_desc + irq;
- spin_lock_irqsave(&desc->lock,flags);
- for (action = desc->action; action != NULL; action = action->next) {
- if (action->dev_id != dev_id)
- continue;
-
- spin_unlock_irqrestore(&desc->lock,flags);
-
- if (teardown_irq(irq, action) == 0)
- kfree(action);
- return;
- }
- printk("Trying to free free IRQ%d\n",irq);
- spin_unlock_irqrestore(&desc->lock,flags);
- return;
-}
-
-/*
- * IRQ autodetection code..
- *
- * This depends on the fact that any interrupt that
- * comes in on to an unassigned handler will get stuck
- * with "IRQ_WAITING" cleared and the interrupt
- * disabled.
- */
-
-static DECLARE_MUTEX(probe_sem);
-
-/**
- * probe_irq_on - begin an interrupt autodetect
- *
- * Commence probing for an interrupt. The interrupts are scanned
- * and a mask of potential interrupt lines is returned.
- *
- */
-
-unsigned long probe_irq_on(void)
-{
- unsigned int i;
- irq_desc_t *desc;
- unsigned long val;
- unsigned long delay;
-
- down(&probe_sem);
- /*
- * something may have generated an irq long ago and we want to
- * flush such a longstanding irq before considering it as spurious.
- */
- for (i = NR_PIRQS-1; i > 0; i--) {
- desc = irq_desc + i;
-
- spin_lock_irq(&desc->lock);
- if (!irq_desc[i].action)
- irq_desc[i].handler->startup(i);
- spin_unlock_irq(&desc->lock);
- }
-
- /* Wait for longstanding interrupts to trigger. */
- for (delay = jiffies + HZ/50; time_after(delay, jiffies); )
- /* about 20ms delay */ synchronize_irq();
-
- /*
- * enable any unassigned irqs
- * (we must startup again here because if a longstanding irq
- * happened in the previous stage, it may have masked itself)
- */
- for (i = NR_PIRQS-1; i > 0; i--) {
- desc = irq_desc + i;
-
- spin_lock_irq(&desc->lock);
- if (!desc->action) {
- desc->status |= IRQ_AUTODETECT | IRQ_WAITING;
- if (desc->handler->startup(i))
- desc->status |= IRQ_PENDING;
- }
- spin_unlock_irq(&desc->lock);
- }
-
- /*
- * Wait for spurious interrupts to trigger
- */
- for (delay = jiffies + HZ/10; time_after(delay, jiffies); )
- /* about 100ms delay */ synchronize_irq();
-
- /*
- * Now filter out any obviously spurious interrupts
- */
- val = 0;
- for (i = 0; i < NR_PIRQS; i++) {
- irq_desc_t *desc = irq_desc + i;
- unsigned int status;
-
- spin_lock_irq(&desc->lock);
- status = desc->status;
-
- if (status & IRQ_AUTODETECT) {
- /* It triggered already - consider it spurious. */
- if (!(status & IRQ_WAITING)) {
- desc->status = status & ~IRQ_AUTODETECT;
- desc->handler->shutdown(i);
- } else
- if (i < 32)
- val |= 1 << i;
- }
- spin_unlock_irq(&desc->lock);
- }
-
- return val;
-}
-
-/*
- * Return a mask of triggered interrupts (this
- * can handle only legacy ISA interrupts).
- */
-
-/**
- * probe_irq_mask - scan a bitmap of interrupt lines
- * @val: mask of interrupts to consider
- *
- * Scan the ISA bus interrupt lines and return a bitmap of
- * active interrupts. The interrupt probe logic state is then
- * returned to its previous value.
- *
- * Note: we need to scan all the irq's even though we will
- * only return ISA irq numbers - just so that we reset them
- * all to a known state.
- */
-unsigned int probe_irq_mask(unsigned long val)
-{
- int i;
- unsigned int mask;
-
- mask = 0;
- for (i = 0; i < NR_PIRQS; i++) {
- irq_desc_t *desc = irq_desc + i;
- unsigned int status;
-
- spin_lock_irq(&desc->lock);
- status = desc->status;
-
- if (status & IRQ_AUTODETECT) {
- if (i < 16 && !(status & IRQ_WAITING))
- mask |= 1 << i;
-
- desc->status = status & ~IRQ_AUTODETECT;
- desc->handler->shutdown(i);
- }
- spin_unlock_irq(&desc->lock);
- }
- up(&probe_sem);
-
- return mask & val;
-}
-
-/*
- * Return the one interrupt that triggered (this can
- * handle any interrupt source).
- */
-
-/**
- * probe_irq_off - end an interrupt autodetect
- * @val: mask of potential interrupts (unused)
- *
- * Scans the unused interrupt lines and returns the line which
- * appears to have triggered the interrupt. If no interrupt was
- * found then zero is returned. If more than one interrupt is
- * found then minus the first candidate is returned to indicate
- * their is doubt.
- *
- * The interrupt probe logic state is returned to its previous
- * value.
- *
- * BUGS: When used in a module (which arguably shouldnt happen)
- * nothing prevents two IRQ probe callers from overlapping. The
- * results of this are non-optimal.
- */
-
-int probe_irq_off(unsigned long val)
-{
- int i, irq_found, nr_irqs;
-
- nr_irqs = 0;
- irq_found = 0;
- for (i = 0; i < NR_PIRQS; i++) {
- irq_desc_t *desc = irq_desc + i;
- unsigned int status;
-
- spin_lock_irq(&desc->lock);
- status = desc->status;
-
- if (status & IRQ_AUTODETECT) {
- if (!(status & IRQ_WAITING)) {
- if (!nr_irqs)
- irq_found = i;
- nr_irqs++;
- }
- desc->status = status & ~IRQ_AUTODETECT;
- desc->handler->shutdown(i);
- }
- spin_unlock_irq(&desc->lock);
- }
- up(&probe_sem);
-
- if (nr_irqs > 1)
- irq_found = -irq_found;
- return irq_found;
-}
-
-/* this was setup_x86_irq but it seems pretty generic */
-int setup_irq(unsigned int irq, struct irqaction * new)
-{
- int shared = 0;
- unsigned long flags;
- struct irqaction *old, **p;
- irq_desc_t *desc = irq_desc + irq;
-
- /*
- * Some drivers like serial.c use request_irq() heavily,
- * so we have to be careful not to interfere with a
- * running system.
- */
- if (new->flags & SA_SAMPLE_RANDOM) {
- /*
- * This function might sleep, we want to call it first,
- * outside of the atomic block.
- * Yes, this might clear the entropy pool if the wrong
- * driver is attempted to be loaded, without actually
- * installing a new handler, but is this really a problem,
- * only the sysadmin is able to do this.
- */
- rand_initialize_irq(irq);
- }
-
- /*
- * The following block of code has to be executed atomically
- */
- spin_lock_irqsave(&desc->lock,flags);
- p = &desc->action;
- if ((old = *p) != NULL) {
- /* Can't share interrupts unless both agree to */
- if (!(old->flags & new->flags & SA_SHIRQ)) {
- spin_unlock_irqrestore(&desc->lock,flags);
- return -EBUSY;
- }
-
- /* add new interrupt at end of irq queue */
- do {
- p = &old->next;
- old = *p;
- } while (old);
- shared = 1;
- }
-
- *p = new;
-
- if (!shared) {
- desc->depth = 0;
- desc->status &= ~(IRQ_DISABLED | IRQ_AUTODETECT | IRQ_WAITING |
IRQ_INPROGRESS);
- desc->handler->startup(irq);
- }
- spin_unlock_irqrestore(&desc->lock,flags);
-
- register_irq_proc(irq);
- return 0;
-}
-
-static struct proc_dir_entry * root_irq_dir;
-static struct proc_dir_entry * irq_dir [NR_IRQS];
-
-#define HEX_DIGITS 8
-
-static unsigned int parse_hex_value (const char *buffer,
- unsigned long count, unsigned long *ret)
-{
- unsigned char hexnum [HEX_DIGITS];
- unsigned long value;
- int i;
-
- if (!count)
- return -EINVAL;
- if (count > HEX_DIGITS)
- count = HEX_DIGITS;
- if (copy_from_user(hexnum, buffer, count))
- return -EFAULT;
-
- /*
- * Parse the first 8 characters as a hex string, any non-hex char
- * is end-of-string. '00e1', 'e1', '00E1', 'E1' are all the same.
- */
- value = 0;
-
- for (i = 0; i < count; i++) {
- unsigned int c = hexnum[i];
-
- switch (c) {
- case '0' ... '9': c -= '0'; break;
- case 'a' ... 'f': c -= 'a'-10; break;
- case 'A' ... 'F': c -= 'A'-10; break;
- default:
- goto out;
- }
- value = (value << 4) | c;
- }
-out:
- *ret = value;
- return 0;
-}
-
-#if CONFIG_SMP
-
-static struct proc_dir_entry * smp_affinity_entry [NR_IRQS];
-
-static unsigned long irq_affinity [NR_IRQS] = { [0 ... NR_IRQS-1] = ~0UL };
-static int irq_affinity_read_proc (char *page, char **start, off_t off,
- int count, int *eof, void *data)
-{
- if (count < HEX_DIGITS+1)
- return -EINVAL;
- return sprintf (page, "%08lx\n", irq_affinity[(long)data]);
-}
-
-static int irq_affinity_write_proc (struct file *file, const char *buffer,
- unsigned long count, void *data)
-{
- int irq = (long) data, full_count = count, err;
- unsigned long new_value;
-
- if (!irq_desc[irq].handler->set_affinity)
- return -EIO;
-
- err = parse_hex_value(buffer, count, &new_value);
-
- /*
- * Do not allow disabling IRQs completely - it's a too easy
- * way to make the system unusable accidentally :-) At least
- * one online CPU still has to be targeted.
- */
- if (!(new_value & cpu_online_map))
- return -EINVAL;
-
- irq_affinity[irq] = new_value;
- irq_desc[irq].handler->set_affinity(irq, new_value);
-
- return full_count;
-}
-
-#endif
-
-static int prof_cpu_mask_read_proc (char *page, char **start, off_t off,
- int count, int *eof, void *data)
-{
- unsigned long *mask = (unsigned long *) data;
- if (count < HEX_DIGITS+1)
- return -EINVAL;
- return sprintf (page, "%08lx\n", *mask);
-}
-
-static int prof_cpu_mask_write_proc (struct file *file, const char *buffer,
- unsigned long count, void *data)
-{
- unsigned long *mask = (unsigned long *) data, full_count = count, err;
- unsigned long new_value;
-
- err = parse_hex_value(buffer, count, &new_value);
- if (err)
- return err;
-
- *mask = new_value;
- return full_count;
-}
-
-#define MAX_NAMELEN 10
-
-static void register_irq_proc (unsigned int irq)
-{
- char name [MAX_NAMELEN];
-
- if (!root_irq_dir || (irq_desc[irq].handler == &no_irq_type) ||
- irq_dir[irq])
- return;
-
- memset(name, 0, MAX_NAMELEN);
- sprintf(name, "%d", irq);
-
- /* create /proc/irq/1234 */
- irq_dir[irq] = proc_mkdir(name, root_irq_dir);
-
-#if CONFIG_SMP
- {
- struct proc_dir_entry *entry;
-
- /* create /proc/irq/1234/smp_affinity */
- entry = create_proc_entry("smp_affinity", 0600, irq_dir[irq]);
-
- if (entry) {
- entry->nlink = 1;
- entry->data = (void *)(long)irq;
- entry->read_proc = irq_affinity_read_proc;
- entry->write_proc = irq_affinity_write_proc;
- }
-
- smp_affinity_entry[irq] = entry;
- }
-#endif
-}
-
-unsigned long prof_cpu_mask = -1;
-
-void init_irq_proc (void)
-{
- struct proc_dir_entry *entry;
- int i;
-
- /* create /proc/irq */
- root_irq_dir = proc_mkdir("irq", 0);
-
- /* create /proc/irq/prof_cpu_mask */
- entry = create_proc_entry("prof_cpu_mask", 0600, root_irq_dir);
-
- if (!entry)
- return;
-
- entry->nlink = 1;
- entry->data = (void *)&prof_cpu_mask;
- entry->read_proc = prof_cpu_mask_read_proc;
- entry->write_proc = prof_cpu_mask_write_proc;
-
- /*
- * Create entries for all existing IRQs.
- */
- for (i = 0; i < NR_IRQS; i++)
- register_irq_proc(i);
-}
-
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/kernel/ldt.c
--- a/linux-2.4.30-xen-sparse/arch/xen/kernel/ldt.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,272 +0,0 @@
-/*
- * linux/kernel/ldt.c
- *
- * Copyright (C) 1992 Krishna Balasubramanian and Linus Torvalds
- * Copyright (C) 1999 Ingo Molnar <mingo@xxxxxxxxxx>
- */
-
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/smp_lock.h>
-#include <linux/vmalloc.h>
-#include <linux/slab.h>
-
-#include <asm/mmu_context.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#include <asm/ldt.h>
-#include <asm/desc.h>
-
-#ifdef CONFIG_SMP /* avoids "defined but not used" warnig */
-static void flush_ldt(void *mm)
-{
- if (current->active_mm)
- load_LDT(¤t->active_mm->context);
-}
-#endif
-
-static int alloc_ldt(mm_context_t *pc, int mincount, int reload)
-{
- void *oldldt;
- void *newldt;
- int oldsize;
-
- if (mincount <= pc->size)
- return 0;
- oldsize = pc->size;
- mincount = (mincount+511)&(~511);
- if (mincount*LDT_ENTRY_SIZE > PAGE_SIZE)
- newldt = vmalloc(mincount*LDT_ENTRY_SIZE);
- else
- newldt = kmalloc(mincount*LDT_ENTRY_SIZE, GFP_KERNEL);
-
- if (!newldt)
- return -ENOMEM;
-
- if (oldsize)
- memcpy(newldt, pc->ldt, oldsize*LDT_ENTRY_SIZE);
-
- oldldt = pc->ldt;
- memset(newldt+oldsize*LDT_ENTRY_SIZE, 0,
(mincount-oldsize)*LDT_ENTRY_SIZE);
- wmb();
- pc->ldt = newldt;
- pc->size = mincount;
- if (reload) {
- make_pages_readonly(
- pc->ldt,
- (pc->size*LDT_ENTRY_SIZE)/PAGE_SIZE);
- load_LDT(pc);
-#ifdef CONFIG_SMP
- if (current->mm->cpu_vm_mask != (1<<smp_processor_id()))
- smp_call_function(flush_ldt, 0, 1, 1);
-#endif
- }
- wmb();
- if (oldsize) {
- make_pages_writable(
- oldldt, (oldsize*LDT_ENTRY_SIZE)/PAGE_SIZE);
- if (oldsize*LDT_ENTRY_SIZE > PAGE_SIZE)
- vfree(oldldt);
- else
- kfree(oldldt);
- }
- return 0;
-}
-
-static inline int copy_ldt(mm_context_t *new, mm_context_t *old)
-{
- int err = alloc_ldt(new, old->size, 0);
- if (err < 0) {
- printk(KERN_WARNING "ldt allocation failed\n");
- new->size = 0;
- return err;
- }
- memcpy(new->ldt, old->ldt, old->size*LDT_ENTRY_SIZE);
- make_pages_readonly(new->ldt, (new->size*LDT_ENTRY_SIZE)/PAGE_SIZE);
- return 0;
-}
-
-/*
- * we do not have to muck with descriptors here, that is
- * done in switch_mm() as needed.
- */
-int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
-{
- struct mm_struct * old_mm;
- int retval = 0;
-
- init_MUTEX(&mm->context.sem);
- mm->context.size = 0;
- old_mm = current->mm;
- if (old_mm && old_mm->context.size > 0) {
- down(&old_mm->context.sem);
- retval = copy_ldt(&mm->context, &old_mm->context);
- up(&old_mm->context.sem);
- }
- return retval;
-}
-
-/*
- * No need to lock the MM as we are the last user
- * Do not touch the ldt register, we are already
- * in the next thread.
- */
-void destroy_context(struct mm_struct *mm)
-{
- if (mm->context.size) {
- make_pages_writable(
- mm->context.ldt,
- (mm->context.size*LDT_ENTRY_SIZE)/PAGE_SIZE);
- if (mm->context.size*LDT_ENTRY_SIZE > PAGE_SIZE)
- vfree(mm->context.ldt);
- else
- kfree(mm->context.ldt);
- mm->context.size = 0;
- }
-}
-
-static int read_ldt(void * ptr, unsigned long bytecount)
-{
- int err;
- unsigned long size;
- struct mm_struct * mm = current->mm;
-
- if (!mm->context.size)
- return 0;
- if (bytecount > LDT_ENTRY_SIZE*LDT_ENTRIES)
- bytecount = LDT_ENTRY_SIZE*LDT_ENTRIES;
-
- down(&mm->context.sem);
- size = mm->context.size*LDT_ENTRY_SIZE;
- if (size > bytecount)
- size = bytecount;
-
- err = 0;
- if (copy_to_user(ptr, mm->context.ldt, size))
- err = -EFAULT;
- up(&mm->context.sem);
- if (err < 0)
- return err;
- if (size != bytecount) {
- /* zero-fill the rest */
- clear_user(ptr+size, bytecount-size);
- }
- return bytecount;
-}
-
-static int read_default_ldt(void * ptr, unsigned long bytecount)
-{
- int err;
- unsigned long size;
- void *address;
-
- err = 0;
- address = &default_ldt[0];
- size = 5*sizeof(struct desc_struct);
- if (size > bytecount)
- size = bytecount;
-
- err = size;
- if (copy_to_user(ptr, address, size))
- err = -EFAULT;
-
- return err;
-}
-
-static int write_ldt(void * ptr, unsigned long bytecount, int oldmode)
-{
- struct mm_struct * mm = current->mm;
- __u32 entry_1, entry_2, *lp;
- unsigned long mach_lp;
- int error;
- struct modify_ldt_ldt_s ldt_info;
-
- error = -EINVAL;
- if (bytecount != sizeof(ldt_info))
- goto out;
- error = -EFAULT;
- if (copy_from_user(&ldt_info, ptr, sizeof(ldt_info)))
- goto out;
-
- error = -EINVAL;
- if (ldt_info.entry_number >= LDT_ENTRIES)
- goto out;
- if (ldt_info.contents == 3) {
- if (oldmode)
- goto out;
- if (ldt_info.seg_not_present == 0)
- goto out;
- }
-
- down(&mm->context.sem);
- if (ldt_info.entry_number >= mm->context.size) {
- error = alloc_ldt(¤t->mm->context,
ldt_info.entry_number+1, 1);
- if (error < 0)
- goto out_unlock;
- }
-
- lp = (__u32 *) ((ldt_info.entry_number << 3) + (char *)
mm->context.ldt);
- mach_lp = arbitrary_virt_to_machine(lp);
-
- /* Allow LDTs to be cleared by the user. */
- if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
- if (oldmode ||
- (ldt_info.contents == 0 &&
- ldt_info.read_exec_only == 1 &&
- ldt_info.seg_32bit == 0 &&
- ldt_info.limit_in_pages == 0 &&
- ldt_info.seg_not_present == 1 &&
- ldt_info.useable == 0 )) {
- entry_1 = 0;
- entry_2 = 0;
- goto install;
- }
- }
-
- entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
- (ldt_info.limit & 0x0ffff);
- entry_2 = (ldt_info.base_addr & 0xff000000) |
- ((ldt_info.base_addr & 0x00ff0000) >> 16) |
- (ldt_info.limit & 0xf0000) |
- ((ldt_info.read_exec_only ^ 1) << 9) |
- (ldt_info.contents << 10) |
- ((ldt_info.seg_not_present ^ 1) << 15) |
- (ldt_info.seg_32bit << 22) |
- (ldt_info.limit_in_pages << 23) |
- 0x7000;
- if (!oldmode)
- entry_2 |= (ldt_info.useable << 20);
-
- /* Install the new entry ... */
-install:
- error = HYPERVISOR_update_descriptor(mach_lp, entry_1, entry_2);
-
-out_unlock:
- up(&mm->context.sem);
-out:
- return error;
-}
-
-asmlinkage int sys_modify_ldt(int func, void *ptr, unsigned long bytecount)
-{
- int ret = -ENOSYS;
-
- switch (func) {
- case 0:
- ret = read_ldt(ptr, bytecount);
- break;
- case 1:
- ret = write_ldt(ptr, bytecount, 1);
- break;
- case 2:
- ret = read_default_ldt(ptr, bytecount);
- break;
- case 0x11:
- ret = write_ldt(ptr, bytecount, 0);
- break;
- }
- return ret;
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/kernel/pci-pc.c
--- a/linux-2.4.30-xen-sparse/arch/xen/kernel/pci-pc.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,260 +0,0 @@
-/*
- * Low-Level PCI Support for PC
- *
- * (c) 1999--2000 Martin Mares <mj@xxxxxx>
- *
- * Adjusted to use Xen's interface by Rolf Neugebauer, Intel Research Cambridge
- * Further modifications by Keir Fraser, University of Cambridge
- */
-
-#include <linux/config.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-
-#include <asm/segment.h>
-#include <asm/io.h>
-
-#include <asm-xen/xen-public/xen.h>
-#include <asm-xen/xen-public/physdev.h>
-
-#include "pci-i386.h"
-
-/*
- * NB. The following interface functions are not included here:
- * 1. void eisa_set_level_irq(unsigned int irq)
- * 2. irq_routing_table * __devinit pcibios_get_irq_routing_table(void)
- * 3. int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq)
- * All are used by the ACPI driver. This should be ported to Xen if it is
- * ever required -- Xen is the ultimate source for IRQ-routing knowledge.
- */
-
-struct pci_ops *pci_root_ops = NULL;
-
-int (*pci_config_read)(int seg, int bus, int dev, int fn,
- int reg, int len, u32 *value) = NULL;
-int (*pci_config_write)(int seg, int bus, int dev, int fn,
- int reg, int len, u32 value) = NULL;
-
-unsigned int pci_probe = PCI_PROBE_BIOS;
-
-struct pci_fixup pcibios_fixups[] = { { 0 } };
-
-static int pci_confx_read(int seg, int bus, int dev, int fn, int reg,
- int len, u32 *value)
-{
- int ret;
- physdev_op_t op;
-
- if (bus > 255 || dev > 31 || fn > 7 || reg > 255)
- return -EINVAL;
-
- op.cmd = PHYSDEVOP_PCI_CFGREG_READ;
- op.u.pci_cfgreg_read.bus = bus;
- op.u.pci_cfgreg_read.dev = dev;
- op.u.pci_cfgreg_read.func = fn;
- op.u.pci_cfgreg_read.reg = reg;
- op.u.pci_cfgreg_read.len = len;
-
- if ( (ret = HYPERVISOR_physdev_op(&op)) != 0 )
- return ret;
-
- *value = op.u.pci_cfgreg_read.value;
-
- return 0;
-}
-
-static int pci_confx_write(int seg, int bus, int dev, int fn, int reg,
- int len, u32 value)
-{
- int ret;
- physdev_op_t op;
-
- if ((bus > 255 || dev > 31 || fn > 7 || reg > 255))
- return -EINVAL;
-
- op.cmd = PHYSDEVOP_PCI_CFGREG_WRITE;
- op.u.pci_cfgreg_write.bus = bus;
- op.u.pci_cfgreg_write.dev = dev;
- op.u.pci_cfgreg_write.func = fn;
- op.u.pci_cfgreg_write.reg = reg;
- op.u.pci_cfgreg_write.len = len;
- op.u.pci_cfgreg_write.value = value;
-
- if ( (ret = HYPERVISOR_physdev_op(&op)) != 0 )
- return ret;
- return 0;
-}
-
-
-static int pci_confx_read_config_byte(struct pci_dev *dev,
- int where, u8 *value)
-{
- int result;
- u32 data;
-
- result = pci_confx_read(0, dev->bus->number, PCI_SLOT(dev->devfn),
- PCI_FUNC(dev->devfn), where, 1, &data);
-
- *value = (u8)data;
-
- return result;
-}
-
-static int pci_confx_read_config_word(struct pci_dev *dev,
- int where, u16 *value)
-{
- int result;
- u32 data;
-
- result = pci_confx_read(0, dev->bus->number, PCI_SLOT(dev->devfn),
- PCI_FUNC(dev->devfn), where, 2, &data);
-
- *value = (u16)data;
-
- return result;
-}
-
-static int pci_confx_read_config_dword(struct pci_dev *dev,
- int where, u32 *value)
-{
- return pci_confx_read(0, dev->bus->number, PCI_SLOT(dev->devfn),
- PCI_FUNC(dev->devfn), where, 4, value);
-}
-
-static int pci_confx_write_config_byte(struct pci_dev *dev,
- int where, u8 value)
-{
- return pci_confx_write(0, dev->bus->number, PCI_SLOT(dev->devfn),
- PCI_FUNC(dev->devfn), where, 1, value);
-}
-
-static int pci_confx_write_config_word(struct pci_dev *dev,
- int where, u16 value)
-{
- return pci_confx_write(0, dev->bus->number, PCI_SLOT(dev->devfn),
- PCI_FUNC(dev->devfn), where, 2, value);
-}
-
-static int pci_confx_write_config_dword(struct pci_dev *dev,
- int where, u32 value)
-{
- return pci_confx_write(0, dev->bus->number, PCI_SLOT(dev->devfn),
- PCI_FUNC(dev->devfn), where, 4, value);
-}
-
-static struct pci_ops pci_conf_xen = {
- pci_confx_read_config_byte,
- pci_confx_read_config_word,
- pci_confx_read_config_dword,
- pci_confx_write_config_byte,
- pci_confx_write_config_word,
- pci_confx_write_config_dword
-};
-
-void pcibios_penalize_isa_irq(int irq)
-{
- /* nothing */
-}
-
-void __devinit pcibios_fixup_bus(struct pci_bus *b)
-{
- pci_read_bridge_bases(b);
-}
-
-struct pci_bus * __devinit pcibios_scan_root(int busnum)
-{
- struct list_head *list;
- struct pci_bus *bus;
-
- list_for_each ( list, &pci_root_buses )
- {
- bus = pci_bus_b(list);
- if ( bus->number == busnum )
- return bus;
- }
-
- printk("PCI: Probing PCI hardware (bus %02x)\n", busnum);
- return pci_scan_bus(busnum, pci_root_ops, NULL);
-}
-
-void __init pcibios_init(void)
-{
- int bus;
- physdev_op_t op;
-
- if ( !pci_probe )
- return;
-
- pci_root_ops = &pci_conf_xen;
- pci_config_read = pci_confx_read;
- pci_config_write = pci_confx_write;
-
- pcibios_set_cacheline_size();
-
- op.cmd = PHYSDEVOP_PCI_PROBE_ROOT_BUSES;
- if ( HYPERVISOR_physdev_op(&op) != 0 )
- {
- printk(KERN_WARNING "PCI: System does not support PCI\n");
- return;
- }
-
- printk(KERN_INFO "PCI: Probing PCI hardware\n");
- for ( bus = 0; bus < 256; bus++ )
- if ( test_bit(bus, &op.u.pci_probe_root_buses.busmask[0]) )
- (void)pcibios_scan_root(bus);
-
- pcibios_resource_survey();
-}
-
-char * __devinit pcibios_setup(char *str)
-{
- if ( !strcmp(str, "off") )
- pci_probe = 0;
- return NULL;
-}
-
-unsigned int pcibios_assign_all_busses(void)
-{
- return 0;
-}
-
-int pcibios_enable_device(struct pci_dev *dev, int mask)
-{
- int err;
- u8 pin;
- physdev_op_t op;
-
- /* Inform Xen that we are going to use this device. */
- op.cmd = PHYSDEVOP_PCI_INITIALISE_DEVICE;
- op.u.pci_initialise_device.bus = dev->bus->number;
- op.u.pci_initialise_device.dev = PCI_SLOT(dev->devfn);
- op.u.pci_initialise_device.func = PCI_FUNC(dev->devfn);
- if ( (err = HYPERVISOR_physdev_op(&op)) != 0 )
- return err;
-
- /* Now we can bind to the very final IRQ line. */
- pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &pin);
- dev->irq = pin;
-
- /* Turn on device I/O and memory access as necessary. */
- if ( (err = pcibios_enable_resources(dev, mask)) < 0 )
- return err;
-
- /* Sanity-check that an interrupt-producing device is routed to an IRQ. */
- pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
- if ( pin != 0 )
- {
- if ( dev->irq != 0 )
- printk(KERN_INFO "PCI: Obtained IRQ %d for device %s\n",
- dev->irq, dev->slot_name);
- else
- printk(KERN_WARNING "PCI: No IRQ known for interrupt pin %c of "
- "device %s.\n", 'A' + pin - 1, dev->slot_name);
- }
-
- return 0;
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/kernel/process.c
--- a/linux-2.4.30-xen-sparse/arch/xen/kernel/process.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,448 +0,0 @@
-/*
- * linux/arch/i386/kernel/process.c
- *
- * Copyright (C) 1995 Linus Torvalds
- *
- * Pentium III FXSR, SSE support
- * Gareth Hughes <gareth@xxxxxxxxxxx>, May 2000
- */
-
-/*
- * This file handles the architecture-dependent parts of process handling..
- */
-
-#define __KERNEL_SYSCALLS__
-#include <stdarg.h>
-
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/smp_lock.h>
-#include <linux/stddef.h>
-#include <linux/unistd.h>
-#include <linux/ptrace.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/user.h>
-#include <linux/a.out.h>
-#include <linux/interrupt.h>
-#include <linux/config.h>
-#include <linux/delay.h>
-#include <linux/reboot.h>
-#include <linux/init.h>
-#include <linux/mc146818rtc.h>
-
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/ldt.h>
-#include <asm/processor.h>
-#include <asm/i387.h>
-#include <asm/desc.h>
-#include <asm/mmu_context.h>
-#include <asm-xen/xen-public/physdev.h>
-
-#include <linux/irq.h>
-
-asmlinkage void ret_from_fork(void) __asm__("ret_from_fork");
-
-int hlt_counter;
-
-/*
- * Powermanagement idle function, if any..
- */
-void (*pm_idle)(void);
-
-/*
- * Power off function, if any
- */
-void (*pm_power_off)(void);
-
-void disable_hlt(void)
-{
- hlt_counter++;
-}
-
-void enable_hlt(void)
-{
- hlt_counter--;
-}
-
-/*
- * The idle thread. There's no useful work to be
- * done, so just try to conserve power and have a
- * low exit latency (ie sit in a loop waiting for
- * somebody to say that they'd like to reschedule)
- */
-void cpu_idle (void)
-{
- extern int set_timeout_timer(void);
-
- /* Endless idle loop with no priority at all. */
- init_idle();
- current->nice = 20;
- current->counter = -100;
-
- for ( ; ; )
- {
- while ( !current->need_resched )
- {
- __cli();
- if ( current->need_resched )
- {
- /* The race-free check for events failed. */
- __sti();
- break;
- }
- else if ( set_timeout_timer() == 0 )
- {
- /* NB. Blocking reenable events in a race-free manner. */
- HYPERVISOR_block();
- }
- else
- {
- /* No race here: yielding will get us the CPU again anyway. */
- __sti();
- HYPERVISOR_yield();
- }
- }
- schedule();
- check_pgt_cache();
- }
-}
-
-extern void show_trace(unsigned long* esp);
-
-void show_regs(struct pt_regs * regs)
-{
- printk("\n");
- printk("Pid: %d, comm: %20s\n", current->pid, current->comm);
- printk("EIP: %04x:[<%08lx>] CPU: %d",0xffff & regs->xcs,regs->eip,
smp_processor_id());
- if (regs->xcs & 2)
- printk(" ESP: %04x:%08lx",0xffff & regs->xss,regs->esp);
- printk(" EFLAGS: %08lx %s\n",regs->eflags, print_tainted());
- printk("EAX: %08lx EBX: %08lx ECX: %08lx EDX: %08lx\n",
- regs->eax,regs->ebx,regs->ecx,regs->edx);
- printk("ESI: %08lx EDI: %08lx EBP: %08lx",
- regs->esi, regs->edi, regs->ebp);
- printk(" DS: %04x ES: %04x\n",
- 0xffff & regs->xds,0xffff & regs->xes);
-
- show_trace(®s->esp);
-}
-
-
-/*
- * Create a kernel thread
- */
-int arch_kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
-{
- long retval, d0;
-
- __asm__ __volatile__(
- "movl %%esp,%%esi\n\t"
- "int $0x80\n\t" /* Linux/i386 system call */
- "cmpl %%esp,%%esi\n\t" /* child or parent? */
- "je 1f\n\t" /* parent - jump */
- /* Load the argument into eax, and push it. That way, it does
- * not matter whether the called function is compiled with
- * -mregparm or not. */
- "movl %4,%%eax\n\t"
- "pushl %%eax\n\t"
- "call *%5\n\t" /* call fn */
- "movl %3,%0\n\t" /* exit */
- "int $0x80\n"
- "1:\t"
- :"=&a" (retval), "=&S" (d0)
- :"0" (__NR_clone), "i" (__NR_exit),
- "r" (arg), "r" (fn),
- "b" (flags | CLONE_VM)
- : "memory");
-
- return retval;
-}
-
-/*
- * Free current thread data structures etc..
- */
-void exit_thread(void)
-{
- /* nothing to do ... */
-}
-
-void flush_thread(void)
-{
- struct task_struct *tsk = current;
-
- memset(tsk->thread.debugreg, 0, sizeof(unsigned long)*8);
-
- /*
- * Forget coprocessor state..
- */
- clear_fpu(tsk);
- tsk->used_math = 0;
-}
-
-void release_thread(struct task_struct *dead_task)
-{
- if (dead_task->mm) {
- // temporary debugging check
- if (dead_task->mm->context.size) {
- printk("WARNING: dead process %8s still has LDT? <%p/%08x>\n",
- dead_task->comm,
- dead_task->mm->context.ldt,
- dead_task->mm->context.size);
- BUG();
- }
- }
- //release_x86_irqs(dead_task);
-}
-
-
-/*
- * Save a segment.
- */
-#define savesegment(seg,value) \
- asm volatile("movl %%" #seg ",%0":"=m" (*(int *)&(value)))
-
-int copy_thread(int nr, unsigned long clone_flags, unsigned long esp,
- unsigned long unused,
- struct task_struct * p, struct pt_regs * regs)
-{
- struct pt_regs * childregs;
-
- childregs = ((struct pt_regs *) (THREAD_SIZE + (unsigned long) p)) - 1;
- struct_cpy(childregs, regs);
- childregs->eax = 0;
- childregs->esp = esp;
-
- p->thread.esp = (unsigned long) childregs;
- p->thread.esp0 = (unsigned long) (childregs+1);
-
- p->thread.eip = (unsigned long) ret_from_fork;
-
- savesegment(fs,p->thread.fs);
- savesegment(gs,p->thread.gs);
-
- unlazy_fpu(current);
- struct_cpy(&p->thread.i387, ¤t->thread.i387);
-
- p->thread.io_pl = current->thread.io_pl;
-
- return 0;
-}
-
-/*
- * fill in the user structure for a core dump..
- */
-void dump_thread(struct pt_regs * regs, struct user * dump)
-{
- int i;
-
-/* changed the size calculations - should hopefully work better. lbt */
- dump->magic = CMAGIC;
- dump->start_code = 0;
- dump->start_stack = regs->esp & ~(PAGE_SIZE - 1);
- dump->u_tsize = ((unsigned long) current->mm->end_code) >> PAGE_SHIFT;
- dump->u_dsize = ((unsigned long) (current->mm->brk + (PAGE_SIZE-1))) >>
PAGE_SHIFT;
- dump->u_dsize -= dump->u_tsize;
- dump->u_ssize = 0;
- for (i = 0; i < 8; i++)
- dump->u_debugreg[i] = current->thread.debugreg[i];
-
- if (dump->start_stack < TASK_SIZE)
- dump->u_ssize = ((unsigned long) (TASK_SIZE - dump->start_stack)) >>
PAGE_SHIFT;
-
- dump->regs.ebx = regs->ebx;
- dump->regs.ecx = regs->ecx;
- dump->regs.edx = regs->edx;
- dump->regs.esi = regs->esi;
- dump->regs.edi = regs->edi;
- dump->regs.ebp = regs->ebp;
- dump->regs.eax = regs->eax;
- dump->regs.ds = regs->xds;
- dump->regs.es = regs->xes;
- savesegment(fs,dump->regs.fs);
- savesegment(gs,dump->regs.gs);
- dump->regs.orig_eax = regs->orig_eax;
- dump->regs.eip = regs->eip;
- dump->regs.cs = regs->xcs;
- dump->regs.eflags = regs->eflags;
- dump->regs.esp = regs->esp;
- dump->regs.ss = regs->xss;
-
- dump->u_fpvalid = dump_fpu (regs, &dump->i387);
-}
-
-/*
- * switch_to(x,yn) should switch tasks from x to y.
- *
- * We fsave/fwait so that an exception goes off at the right time
- * (as a call from the fsave or fwait in effect) rather than to
- * the wrong process. Lazy FP saving no longer makes any sense
- * with modern CPU's, and this simplifies a lot of things (SMP
- * and UP become the same).
- *
- * NOTE! We used to use the x86 hardware context switching. The
- * reason for not using it any more becomes apparent when you
- * try to recover gracefully from saved state that is no longer
- * valid (stale segment register values in particular). With the
- * hardware task-switch, there is no way to fix up bad state in
- * a reasonable manner.
- *
- * The fact that Intel documents the hardware task-switching to
- * be slow is a fairly red herring - this code is not noticeably
- * faster. However, there _is_ some room for improvement here,
- * so the performance issues may eventually be a valid point.
- * More important, however, is the fact that this allows us much
- * more flexibility.
- */
-void fastcall __switch_to(struct task_struct *prev_p, struct task_struct
*next_p)
-{
- struct thread_struct *next = &next_p->thread;
- physdev_op_t op;
- multicall_entry_t _mcl[8], *mcl = _mcl;
-
- /*
- * This is basically 'unlazy_fpu', except that we queue a multicall to
- * indicate FPU task switch, rather than synchronously trapping to Xen.
- */
- if ( prev_p->flags & PF_USEDFPU )
- {
- if ( cpu_has_fxsr )
- asm volatile( "fxsave %0 ; fnclex"
- : "=m" (prev_p->thread.i387.fxsave) );
- else
- asm volatile( "fnsave %0 ; fwait"
- : "=m" (prev_p->thread.i387.fsave) );
- prev_p->flags &= ~PF_USEDFPU;
- mcl->op = __HYPERVISOR_fpu_taskswitch;
- mcl->args[0] = 1;
- mcl++;
- }
-
- mcl->op = __HYPERVISOR_stack_switch;
- mcl->args[0] = __KERNEL_DS;
- mcl->args[1] = next->esp0;
- mcl++;
-
- if ( prev_p->thread.io_pl != next->io_pl )
- {
- op.cmd = PHYSDEVOP_SET_IOPL;
- op.u.set_iopl.iopl = next->io_pl;
- mcl->op = __HYPERVISOR_physdev_op;
- mcl->args[0] = (unsigned long)&op;
- mcl++;
- }
-
- (void)HYPERVISOR_multicall(_mcl, mcl - _mcl);
-
- /*
- * Restore %fs and %gs.
- */
- loadsegment(fs, next->fs);
- loadsegment(gs, next->gs);
-
- /*
- * Now maybe reload the debug registers
- */
- if ( next->debugreg[7] != 0 )
- {
- HYPERVISOR_set_debugreg(0, next->debugreg[0]);
- HYPERVISOR_set_debugreg(1, next->debugreg[1]);
- HYPERVISOR_set_debugreg(2, next->debugreg[2]);
- HYPERVISOR_set_debugreg(3, next->debugreg[3]);
- /* no 4 and 5 */
- HYPERVISOR_set_debugreg(6, next->debugreg[6]);
- HYPERVISOR_set_debugreg(7, next->debugreg[7]);
- }
-}
-
-asmlinkage int sys_fork(struct pt_regs regs)
-{
- return do_fork(SIGCHLD, regs.esp, ®s, 0);
-}
-
-asmlinkage int sys_clone(struct pt_regs regs)
-{
- unsigned long clone_flags;
- unsigned long newsp;
-
- clone_flags = regs.ebx;
- newsp = regs.ecx;
- if (!newsp)
- newsp = regs.esp;
- return do_fork(clone_flags, newsp, ®s, 0);
-}
-
-/*
- * This is trivial, and on the face of it looks like it
- * could equally well be done in user mode.
- *
- * Not so, for quite unobvious reasons - register pressure.
- * In user mode vfork() cannot have a stack frame, and if
- * done by calling the "clone()" system call directly, you
- * do not have enough call-clobbered registers to hold all
- * the information you need.
- */
-asmlinkage int sys_vfork(struct pt_regs regs)
-{
- return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, regs.esp, ®s, 0);
-}
-
-/*
- * sys_execve() executes a new program.
- */
-asmlinkage int sys_execve(struct pt_regs regs)
-{
- int error;
- char * filename;
-
- filename = getname((char *) regs.ebx);
- error = PTR_ERR(filename);
- if (IS_ERR(filename))
- goto out;
- error = do_execve(filename, (char **) regs.ecx, (char **) regs.edx, ®s);
- if (error == 0)
- current->ptrace &= ~PT_DTRACE;
- putname(filename);
- out:
- return error;
-}
-
-/*
- * These bracket the sleeping functions..
- */
-extern void scheduling_functions_start_here(void);
-extern void scheduling_functions_end_here(void);
-#define first_sched ((unsigned long) scheduling_functions_start_here)
-#define last_sched ((unsigned long) scheduling_functions_end_here)
-
-unsigned long get_wchan(struct task_struct *p)
-{
- unsigned long ebp, esp, eip;
- unsigned long stack_page;
- int count = 0;
- if (!p || p == current || p->state == TASK_RUNNING)
- return 0;
- stack_page = (unsigned long)p;
- esp = p->thread.esp;
- if (!stack_page || esp < stack_page || esp > 8188+stack_page)
- return 0;
- /* include/asm-i386/system.h:switch_to() pushes ebp last. */
- ebp = *(unsigned long *) esp;
- do {
- if (ebp < stack_page || ebp > 8184+stack_page)
- return 0;
- eip = *(unsigned long *) (ebp+4);
- if (eip < first_sched || eip >= last_sched)
- return eip;
- ebp = *(unsigned long *) ebp;
- } while (count++ < 16);
- return 0;
-}
-#undef last_sched
-#undef first_sched
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/kernel/setup.c
--- a/linux-2.4.30-xen-sparse/arch/xen/kernel/setup.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,1213 +0,0 @@
-/*
- * linux/arch/i386/kernel/setup.c
- *
- * Copyright (C) 1995 Linus Torvalds
- */
-
-/*
- * This file handles the architecture-dependent parts of initialization
- */
-
-#define __KERNEL_SYSCALLS__
-static int errno;
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/stddef.h>
-#include <linux/unistd.h>
-#include <linux/ptrace.h>
-#include <linux/slab.h>
-#include <linux/user.h>
-#include <linux/a.out.h>
-#include <linux/tty.h>
-#include <linux/ioport.h>
-#include <linux/delay.h>
-#include <linux/config.h>
-#include <linux/init.h>
-#include <linux/apm_bios.h>
-#ifdef CONFIG_BLK_DEV_RAM
-#include <linux/blk.h>
-#endif
-#include <linux/highmem.h>
-#include <linux/bootmem.h>
-#include <linux/seq_file.h>
-#include <linux/reboot.h>
-#include <asm/processor.h>
-#include <linux/console.h>
-#include <linux/module.h>
-#include <asm/mtrr.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/smp.h>
-#include <asm/msr.h>
-#include <asm/desc.h>
-#include <asm/dma.h>
-#include <asm/mpspec.h>
-#include <asm/mmu_context.h>
-#include <asm/ctrl_if.h>
-#include <asm/hypervisor.h>
-#include <asm-xen/xen-public/physdev.h>
-#include <linux/netdevice.h>
-#include <linux/rtnetlink.h>
-#include <linux/tqueue.h>
-#include <net/pkt_sched.h> /* dev_(de)activate */
-
-/*
- * Point at the empty zero page to start with. We map the real shared_info
- * page as soon as fixmap is up and running.
- */
-shared_info_t *HYPERVISOR_shared_info = (shared_info_t *)empty_zero_page;
-
-unsigned int *phys_to_machine_mapping, *pfn_to_mfn_frame_list;
-
-/*
- * Machine setup..
- */
-
-char ignore_irq13; /* set if exception 16 works */
-struct cpuinfo_x86 boot_cpu_data = { 0, 0, 0, 0, -1, 1, 0, 0, -1 };
-
-unsigned long mmu_cr4_features;
-
-unsigned char * vgacon_mmap;
-
-/*
- * Bus types ..
- */
-#ifdef CONFIG_EISA
-int EISA_bus;
-#endif
-int MCA_bus;
-
-/* for MCA, but anyone else can use it if they want */
-unsigned int machine_id;
-unsigned int machine_submodel_id;
-unsigned int BIOS_revision;
-unsigned int mca_pentium_flag;
-
-/* For PCI or other memory-mapped resources */
-unsigned long pci_mem_start = 0x10000000;
-
-/*
- * Setup options
- */
-struct drive_info_struct { char dummy[32]; } drive_info;
-struct screen_info screen_info;
-struct apm_info apm_info;
-struct sys_desc_table_struct {
- unsigned short length;
- unsigned char table[0];
-};
-
-unsigned char aux_device_present;
-
-extern int root_mountflags;
-extern char _text, _etext, _edata, _end;
-
-extern int blk_nohighio;
-
-int enable_acpi_smp_table;
-
-/* Raw start-of-day parameters from the hypervisor. */
-union xen_start_info_union xen_start_info_union;
-
-#define COMMAND_LINE_SIZE MAX_GUEST_CMDLINE
-static char command_line[COMMAND_LINE_SIZE];
-char saved_command_line[COMMAND_LINE_SIZE];
-
-/* parse_mem_cmdline()
- * returns the value of the mem= boot param converted to pages or 0
- */
-static int __init parse_mem_cmdline (char ** cmdline_p)
-{
- char c = ' ', *to = command_line, *from = saved_command_line;
- int len = 0;
- unsigned long long bytes;
- int mem_param = 0;
-
- /* Save unparsed command line copy for /proc/cmdline */
- memcpy(saved_command_line, xen_start_info.cmd_line, COMMAND_LINE_SIZE);
- saved_command_line[COMMAND_LINE_SIZE-1] = '\0';
-
- for (;;) {
- /*
- * "mem=nopentium" disables the 4MB page tables.
- * "mem=XXX[kKmM]" defines a memory region from HIGH_MEM
- * to <mem>, overriding the bios size.
- * "mem=XXX[KkmM]@XXX[KkmM]" defines a memory region from
- * <start> to <start>+<mem>, overriding the bios size.
- */
- if (c == ' ' && !memcmp(from, "mem=", 4)) {
- if (to != command_line)
- to--;
- if (!memcmp(from+4, "nopentium", 9)) {
- from += 9+4;
- } else if (!memcmp(from+4, "exactmap", 8)) {
- from += 8+4;
- } else {
- bytes = memparse(from+4, &from);
- mem_param = bytes>>PAGE_SHIFT;
- if (*from == '@')
- (void)memparse(from+1, &from);
- }
- }
-
- c = *(from++);
- if (!c)
- break;
- if (COMMAND_LINE_SIZE <= ++len)
- break;
- *(to++) = c;
- }
- *to = '\0';
- *cmdline_p = command_line;
-
- return mem_param;
-}
-
-/*
- * Every exception-fixup table is sorted (i.e., kernel main table, and every
- * module table. Some elements may be out of order if they reference text.init,
- * for example.
- */
-static void sort_exception_table(struct exception_table_entry *start,
- struct exception_table_entry *end)
-{
- struct exception_table_entry *p, *q, tmp;
-
- for ( p = start; p < end; p++ )
- {
- for ( q = p-1; q > start; q-- )
- if ( p->insn > q->insn )
- break;
- if ( ++q != p )
- {
- tmp = *p;
- memmove(q+1, q, (p-q)*sizeof(*p));
- *q = tmp;
- }
- }
-}
-
-int xen_module_init(struct module *mod)
-{
- sort_exception_table(mod->ex_table_start, mod->ex_table_end);
- return 0;
-}
-
-void __init setup_arch(char **cmdline_p)
-{
- int i,j;
- unsigned long bootmap_size, start_pfn, lmax_low_pfn;
- int mem_param; /* user specified memory size in pages */
- int boot_pfn; /* low pages available for bootmem */
- physdev_op_t op;
-
- extern void hypervisor_callback(void);
- extern void failsafe_callback(void);
-
- extern unsigned long cpu0_pte_quicklist[];
- extern unsigned long cpu0_pgd_quicklist[];
-
- extern const struct exception_table_entry __start___ex_table[];
- extern const struct exception_table_entry __stop___ex_table[];
-
- extern char _stext;
-
- /* Force a quick death if the kernel panics. */
- extern int panic_timeout;
- if ( panic_timeout == 0 )
- panic_timeout = 1;
-
- /* Ensure that the kernel exception-fixup table is sorted. */
- sort_exception_table(__start___ex_table, __stop___ex_table);
-
-#ifndef CONFIG_HIGHIO
- blk_nohighio = 1;
-#endif
-
- HYPERVISOR_vm_assist(
- VMASST_CMD_enable, VMASST_TYPE_4gb_segments);
- HYPERVISOR_vm_assist(
- VMASST_CMD_enable, VMASST_TYPE_writable_pagetables);
-
- HYPERVISOR_set_callbacks(
- __KERNEL_CS, (unsigned long)hypervisor_callback,
- __KERNEL_CS, (unsigned long)failsafe_callback);
-
- boot_cpu_data.pgd_quick = cpu0_pgd_quicklist;
- boot_cpu_data.pte_quick = cpu0_pte_quicklist;
-
- /* This must be initialized to UNNAMED_MAJOR for ipconfig to work
- properly. Setting ROOT_DEV to default to /dev/ram0 breaks initrd. */
- ROOT_DEV = MKDEV(UNNAMED_MAJOR,0);
- memset(&drive_info, 0, sizeof(drive_info));
- memset(&screen_info, 0, sizeof(screen_info));
-
- /* This is drawn from a dump from vgacon:startup in standard Linux. */
- screen_info.orig_video_mode = 3;
- screen_info.orig_video_isVGA = 1;
- screen_info.orig_video_lines = 25;
- screen_info.orig_video_cols = 80;
- screen_info.orig_video_ega_bx = 3;
- screen_info.orig_video_points = 16;
-
- memset(&apm_info.bios, 0, sizeof(apm_info.bios));
- aux_device_present = 0;
-#ifdef CONFIG_BLK_DEV_RAM
- rd_image_start = 0;
- rd_prompt = 0;
- rd_doload = 0;
-#endif
-
- root_mountflags &= ~MS_RDONLY;
- init_mm.start_code = (unsigned long) &_text;
- init_mm.end_code = (unsigned long) &_etext;
- init_mm.end_data = (unsigned long) &_edata;
- init_mm.brk = (unsigned long) &_end;
-
- /* The mem= kernel command line param overrides the detected amount
- * of memory. For xenolinux, if this override is larger than detected
- * memory, then boot using only detected memory and make provisions to
- * use all of the override value. The hypervisor can give this
- * domain more memory later on and it will be added to the free
- * lists at that time. See claim_new_pages() in
- * arch/xen/drivers/balloon/balloon.c
- */
- mem_param = parse_mem_cmdline(cmdline_p);
- if (mem_param < xen_start_info.nr_pages)
- mem_param = xen_start_info.nr_pages;
-
-#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
-#define PFN_DOWN(x) ((x) >> PAGE_SHIFT)
-#define PFN_PHYS(x) ((x) << PAGE_SHIFT)
-
-/*
- * 128MB for vmalloc(), iomap(), kmap(), and fixaddr mappings.
- */
-#define VMALLOC_RESERVE (unsigned long)(128 << 20)
-#define MAXMEM (unsigned
long)(HYPERVISOR_VIRT_START-PAGE_OFFSET-VMALLOC_RESERVE)
-#define MAXMEM_PFN PFN_DOWN(MAXMEM)
-#define MAX_NONPAE_PFN (1 << 20)
-
- /*
- * Determine low and high memory ranges:
- */
- lmax_low_pfn = max_pfn = mem_param;
- if (lmax_low_pfn > MAXMEM_PFN) {
- lmax_low_pfn = MAXMEM_PFN;
-#ifndef CONFIG_HIGHMEM
- /* Maximum memory usable is what is directly addressable */
- printk(KERN_WARNING "Warning only %ldMB will be used.\n",
- MAXMEM>>20);
- if (max_pfn > MAX_NONPAE_PFN)
- printk(KERN_WARNING "Use a PAE enabled kernel.\n");
- else
- printk(KERN_WARNING "Use a HIGHMEM enabled kernel.\n");
- max_pfn = lmax_low_pfn;
-#else /* !CONFIG_HIGHMEM */
-#ifndef CONFIG_X86_PAE
- if (max_pfn > MAX_NONPAE_PFN) {
- max_pfn = MAX_NONPAE_PFN;
- printk(KERN_WARNING "Warning only 4GB will be used.\n");
- printk(KERN_WARNING "Use a PAE enabled kernel.\n");
- }
-#endif /* !CONFIG_X86_PAE */
-#endif /* !CONFIG_HIGHMEM */
- }
-
-#ifdef CONFIG_HIGHMEM
- highstart_pfn = highend_pfn = max_pfn;
- if (max_pfn > MAXMEM_PFN) {
- highstart_pfn = MAXMEM_PFN;
- printk(KERN_NOTICE "%ldMB HIGHMEM available.\n",
- pages_to_mb(highend_pfn - highstart_pfn));
- }
-#endif
-
- phys_to_machine_mapping = (unsigned int *)xen_start_info.mfn_list;
- cur_pgd = init_mm.pgd = (pgd_t *)xen_start_info.pt_base;
-
- start_pfn = (__pa(xen_start_info.pt_base) >> PAGE_SHIFT) +
- xen_start_info.nr_pt_frames;
-
- /*
- * Initialize the boot-time allocator, and free up all RAM. Then reserve
- * space for OS image, initrd, phys->machine table, bootstrap page table,
- * and the bootmem bitmap.
- * NB. There is definitely enough room for the bootmem bitmap in the
- * bootstrap page table. We are guaranteed to get >=512kB unused 'padding'
- * for our own use after all bootstrap elements
- * (see asm-xen/xen-public/xen.h).
- */
- boot_pfn = min((int)xen_start_info.nr_pages,lmax_low_pfn);
- bootmap_size = init_bootmem(start_pfn,boot_pfn);
- free_bootmem(0, PFN_PHYS(boot_pfn));
- reserve_bootmem(__pa(&_stext),
- PFN_PHYS(start_pfn) + bootmap_size + PAGE_SIZE-1 -
- __pa(&_stext));
-
- /* init_bootmem() set the global max_low_pfn to boot_pfn. Now max_low_pfn
- * can be set to the override value.
- */
- max_low_pfn = lmax_low_pfn;
-
-#ifdef CONFIG_BLK_DEV_INITRD
- if ( xen_start_info.mod_start != 0 )
- {
- if ( (__pa(xen_start_info.mod_start) + xen_start_info.mod_len) <=
- (max_low_pfn << PAGE_SHIFT) )
- {
- initrd_start = xen_start_info.mod_start;
- initrd_end = initrd_start + xen_start_info.mod_len;
- initrd_below_start_ok = 1;
- }
- else
- {
- printk(KERN_ERR "initrd extends beyond end of memory "
- "(0x%08lx > 0x%08lx)\ndisabling initrd\n",
- __pa(xen_start_info.mod_start) + xen_start_info.mod_len,
- max_low_pfn << PAGE_SHIFT);
- initrd_start = 0;
- }
- }
-#endif
-
- paging_init();
-
- /* Make sure we have a correctly sized P->M table. */
- if ( max_pfn != xen_start_info.nr_pages )
- {
- phys_to_machine_mapping = alloc_bootmem_low_pages(
- max_pfn * sizeof(unsigned long));
- if ( max_pfn > xen_start_info.nr_pages )
- {
- memset(phys_to_machine_mapping, ~0,
- max_pfn * sizeof(unsigned long));
- memcpy(phys_to_machine_mapping,
- (unsigned long *)xen_start_info.mfn_list,
- xen_start_info.nr_pages * sizeof(unsigned long));
- }
- else
- {
- memcpy(phys_to_machine_mapping,
- (unsigned long *)xen_start_info.mfn_list,
- max_pfn * sizeof(unsigned long));
- if (HYPERVISOR_dom_mem_op(
- MEMOP_decrease_reservation,
- (unsigned long *)xen_start_info.mfn_list + max_pfn,
- xen_start_info.nr_pages - max_pfn, 0) !=
- (xen_start_info.nr_pages - max_pfn))
- BUG();
- }
- free_bootmem(__pa(xen_start_info.mfn_list),
- PFN_PHYS(PFN_UP(xen_start_info.nr_pages *
- sizeof(unsigned long))));
- }
-
- pfn_to_mfn_frame_list = alloc_bootmem_low_pages(PAGE_SIZE);
- for ( i=0, j=0; i < max_pfn; i+=(PAGE_SIZE/sizeof(unsigned long)), j++ )
- {
- pfn_to_mfn_frame_list[j] =
- virt_to_machine(&phys_to_machine_mapping[i]) >> PAGE_SHIFT;
- }
- HYPERVISOR_shared_info->arch.pfn_to_mfn_frame_list =
- virt_to_machine(pfn_to_mfn_frame_list) >> PAGE_SHIFT;
-
- op.cmd = PHYSDEVOP_SET_IOPL;
- op.u.set_iopl.iopl = current->thread.io_pl = 1;
- HYPERVISOR_physdev_op(&op);
-
- if (xen_start_info.flags & SIF_INITDOMAIN )
- {
- if( !(xen_start_info.flags & SIF_PRIVILEGED) )
- panic("Xen granted us console access but not privileged status");
-
-#if defined(CONFIG_VT)
-#if defined(CONFIG_VGA_CONSOLE)
- conswitchp = &vga_con;
-#elif defined(CONFIG_DUMMY_CONSOLE)
- conswitchp = &dummy_con;
-#endif
-#endif
- }
-}
-
-static int cachesize_override __initdata = -1;
-static int __init cachesize_setup(char *str)
-{
- get_option (&str, &cachesize_override);
- return 1;
-}
-__setup("cachesize=", cachesize_setup);
-
-static int __init highio_setup(char *str)
-{
- printk("i386: disabling HIGHMEM block I/O\n");
- blk_nohighio = 1;
- return 1;
-}
-__setup("nohighio", highio_setup);
-
-static int __init get_model_name(struct cpuinfo_x86 *c)
-{
- unsigned int *v;
- char *p, *q;
-
- if (cpuid_eax(0x80000000) < 0x80000004)
- return 0;
-
- v = (unsigned int *) c->x86_model_id;
- cpuid(0x80000002, &v[0], &v[1], &v[2], &v[3]);
- cpuid(0x80000003, &v[4], &v[5], &v[6], &v[7]);
- cpuid(0x80000004, &v[8], &v[9], &v[10], &v[11]);
- c->x86_model_id[48] = 0;
-
- /* Intel chips right-justify this string for some dumb reason;
- undo that brain damage */
- p = q = &c->x86_model_id[0];
- while ( *p == ' ' )
- p++;
- if ( p != q ) {
- while ( *p )
- *q++ = *p++;
- while ( q <= &c->x86_model_id[48] )
- *q++ = '\0'; /* Zero-pad the rest */
- }
-
- return 1;
-}
-
-
-static void __init display_cacheinfo(struct cpuinfo_x86 *c)
-{
- unsigned int n, dummy, ecx, edx, l2size;
-
- n = cpuid_eax(0x80000000);
-
- if (n >= 0x80000005) {
- cpuid(0x80000005, &dummy, &dummy, &ecx, &edx);
- printk(KERN_INFO "CPU: L1 I Cache: %dK (%d bytes/line), D cache %dK
(%d bytes/line)\n",
- edx>>24, edx&0xFF, ecx>>24, ecx&0xFF);
- c->x86_cache_size=(ecx>>24)+(edx>>24);
- }
-
- if (n < 0x80000006) /* Some chips just has a large L1. */
- return;
-
- ecx = cpuid_ecx(0x80000006);
- l2size = ecx >> 16;
-
- /* AMD errata T13 (order #21922) */
- if ((c->x86_vendor == X86_VENDOR_AMD) && (c->x86 == 6)) {
- if (c->x86_model == 3 && c->x86_mask == 0) /* Duron Rev A0 */
- l2size = 64;
- if (c->x86_model == 4 &&
- (c->x86_mask==0 || c->x86_mask==1)) /* Tbird rev A1/A2 */
- l2size = 256;
- }
-
- /* Intel PIII Tualatin. This comes in two flavours.
- * One has 256kb of cache, the other 512. We have no way
- * to determine which, so we use a boottime override
- * for the 512kb model, and assume 256 otherwise.
- */
- if ((c->x86_vendor == X86_VENDOR_INTEL) && (c->x86 == 6) &&
- (c->x86_model == 11) && (l2size == 0))
- l2size = 256;
-
- if (c->x86_vendor == X86_VENDOR_CENTAUR) {
- /* VIA C3 CPUs (670-68F) need further shifting. */
- if ((c->x86 == 6) &&
- ((c->x86_model == 7) || (c->x86_model == 8))) {
- l2size >>= 8;
- }
-
- /* VIA also screwed up Nehemiah stepping 1, and made
- it return '65KB' instead of '64KB'
- - Note, it seems this may only be in engineering samples. */
- if ((c->x86==6) && (c->x86_model==9) &&
- (c->x86_mask==1) && (l2size==65))
- l2size -= 1;
- }
-
- /* Allow user to override all this if necessary. */
- if (cachesize_override != -1)
- l2size = cachesize_override;
-
- if ( l2size == 0 )
- return; /* Again, no L2 cache is possible */
-
- c->x86_cache_size = l2size;
-
- printk(KERN_INFO "CPU: L2 Cache: %dK (%d bytes/line)\n",
- l2size, ecx & 0xFF);
-}
-
-static void __init init_c3(struct cpuinfo_x86 *c)
-{
- /* Test for Centaur Extended Feature Flags presence */
- if (cpuid_eax(0xC0000000) >= 0xC0000001) {
- /* store Centaur Extended Feature Flags as
- * word 5 of the CPU capability bit array
- */
- c->x86_capability[5] = cpuid_edx(0xC0000001);
- }
-
- switch (c->x86_model) {
- case 9: /* Nehemiah */
- default:
- get_model_name(c);
- display_cacheinfo(c);
- break;
- }
-}
-
-static void __init init_centaur(struct cpuinfo_x86 *c)
-{
- /* Bit 31 in normal CPUID used for nonstandard 3DNow ID;
- 3DNow is IDd by bit 31 in extended CPUID (1*3231) anyway */
- clear_bit(0*32+31, &c->x86_capability);
-
- switch (c->x86) {
- case 6:
- init_c3(c);
- break;
- default:
- panic("Unsupported Centaur CPU (%i)\n", c->x86);
- }
-}
-
-static int __init init_amd(struct cpuinfo_x86 *c)
-{
- int r;
-
- /* Bit 31 in normal CPUID used for nonstandard 3DNow ID;
- 3DNow is IDd by bit 31 in extended CPUID (1*32+31) anyway */
- clear_bit(0*32+31, &c->x86_capability);
-
- r = get_model_name(c);
-
- switch(c->x86)
- {
- case 5: /* We don't like AMD K6 */
- panic("Unsupported AMD processor\n");
- case 6: /* An Athlon/Duron. We can trust the BIOS probably */
- break;
- }
-
- display_cacheinfo(c);
- return r;
-}
-
-
-static void __init init_intel(struct cpuinfo_x86 *c)
-{
- char *p = NULL;
- unsigned int l1i = 0, l1d = 0, l2 = 0, l3 = 0; /* Cache sizes */
-
- if (c->cpuid_level > 1) {
- /* supports eax=2 call */
- int i, j, n;
- int regs[4];
- unsigned char *dp = (unsigned char *)regs;
-
- /* Number of times to iterate */
- n = cpuid_eax(2) & 0xFF;
-
- for ( i = 0 ; i < n ; i++ ) {
- cpuid(2, ®s[0], ®s[1], ®s[2], ®s[3]);
-
- /* If bit 31 is set, this is an unknown format */
- for ( j = 0 ; j < 3 ; j++ ) {
- if ( regs[j] < 0 ) regs[j] = 0;
- }
-
- /* Byte 0 is level count, not a descriptor */
- for ( j = 1 ; j < 16 ; j++ ) {
- unsigned char des = dp[j];
- unsigned char dl, dh;
- unsigned int cs;
-
- dh = des >> 4;
- dl = des & 0x0F;
-
- /* Black magic... */
-
- switch ( dh )
- {
- case 0:
- switch ( dl ) {
- case 6:
- /* L1 I cache */
- l1i += 8;
- break;
- case 8:
- /* L1 I cache */
- l1i += 16;
- break;
- case 10:
- /* L1 D cache */
- l1d += 8;
- break;
- case 12:
- /* L1 D cache */
- l1d += 16;
- break;
- default:;
- /* TLB, or unknown */
- }
- break;
- case 2:
- if ( dl ) {
- /* L3 cache */
- cs = (dl-1) << 9;
- l3 += cs;
- }
- break;
- case 4:
- if ( c->x86 > 6 && dl ) {
- /* P4 family */
- /* L3 cache */
- cs = 128 << (dl-1);
- l3 += cs;
- break;
- }
- /* else same as 8 - fall through */
- case 8:
- if ( dl ) {
- /* L2 cache */
- cs = 128 << (dl-1);
- l2 += cs;
- }
- break;
- case 6:
- if (dl > 5) {
- /* L1 D cache */
- cs = 8<<(dl-6);
- l1d += cs;
- }
- break;
- case 7:
- if ( dl >= 8 )
- {
- /* L2 cache */
- cs = 64<<(dl-8);
- l2 += cs;
- } else {
- /* L0 I cache, count as L1 */
- cs = dl ? (16 << (dl-1)) : 12;
- l1i += cs;
- }
- break;
- default:
- /* TLB, or something else we don't know about */
- break;
- }
- }
- }
- if ( l1i || l1d )
- printk(KERN_INFO "CPU: L1 I cache: %dK, L1 D cache: %dK\n",
- l1i, l1d);
- if ( l2 )
- printk(KERN_INFO "CPU: L2 cache: %dK\n", l2);
- if ( l3 )
- printk(KERN_INFO "CPU: L3 cache: %dK\n", l3);
-
- /*
- * This assumes the L3 cache is shared; it typically lives in
- * the northbridge. The L1 caches are included by the L2
- * cache, and so should not be included for the purpose of
- * SMP switching weights.
- */
- c->x86_cache_size = l2 ? l2 : (l1i+l1d);
- }
-
- /* SEP CPUID bug: Pentium Pro reports SEP but doesn't have it */
- if ( c->x86 == 6 && c->x86_model < 3 && c->x86_mask < 3 )
- clear_bit(X86_FEATURE_SEP, &c->x86_capability);
-
- /* Names for the Pentium II/Celeron processors
- detectable only by also checking the cache size.
- Dixon is NOT a Celeron. */
- if (c->x86 == 6) {
- switch (c->x86_model) {
- case 5:
- if (l2 == 0)
- p = "Celeron (Covington)";
- if (l2 == 256)
- p = "Mobile Pentium II (Dixon)";
- break;
-
- case 6:
- if (l2 == 128)
- p = "Celeron (Mendocino)";
- break;
-
- case 8:
- if (l2 == 128)
- p = "Celeron (Coppermine)";
- break;
- }
- }
-
- if ( p )
- strcpy(c->x86_model_id, p);
-}
-
-void __init get_cpu_vendor(struct cpuinfo_x86 *c)
-{
- char *v = c->x86_vendor_id;
-
- if (!strcmp(v, "GenuineIntel"))
- c->x86_vendor = X86_VENDOR_INTEL;
- else if (!strcmp(v, "AuthenticAMD"))
- c->x86_vendor = X86_VENDOR_AMD;
- else if (!strcmp(v, "CentaurHauls"))
- c->x86_vendor = X86_VENDOR_CENTAUR;
- else
- c->x86_vendor = X86_VENDOR_UNKNOWN;
-}
-
-struct cpu_model_info {
- int vendor;
- int family;
- char *model_names[16];
-};
-
-/* Naming convention should be: <Name> [(<Codename>)] */
-/* This table only is used unless init_<vendor>() below doesn't set it; */
-/* in particular, if CPUID levels 0x80000002..4 are supported, this isn't used
*/
-static struct cpu_model_info cpu_models[] __initdata = {
- { X86_VENDOR_INTEL, 6,
- { "Pentium Pro A-step", "Pentium Pro", NULL, "Pentium II (Klamath)",
- NULL, "Pentium II (Deschutes)", "Mobile Pentium II",
- "Pentium III (Katmai)", "Pentium III (Coppermine)", NULL,
- "Pentium III (Cascades)", NULL, NULL, NULL, NULL }},
- { X86_VENDOR_AMD, 6, /* Is this this really necessary?? */
- { "Athlon", "Athlon",
- "Athlon", NULL, "Athlon", NULL,
- NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL }}
-};
-
-/* Look up CPU names by table lookup. */
-static char __init *table_lookup_model(struct cpuinfo_x86 *c)
-{
- struct cpu_model_info *info = cpu_models;
- int i;
-
- if ( c->x86_model >= 16 )
- return NULL; /* Range check */
-
- for ( i = 0 ; i < sizeof(cpu_models)/sizeof(struct cpu_model_info) ; i++ )
{
- if ( info->vendor == c->x86_vendor &&
- info->family == c->x86 ) {
- return info->model_names[c->x86_model];
- }
- info++;
- }
- return NULL; /* Not found */
-}
-
-
-
-/* Standard macro to see if a specific flag is changeable */
-static inline int flag_is_changeable_p(u32 flag)
-{
- u32 f1, f2;
-
- asm("pushfl\n\t"
- "pushfl\n\t"
- "popl %0\n\t"
- "movl %0,%1\n\t"
- "xorl %2,%0\n\t"
- "pushl %0\n\t"
- "popfl\n\t"
- "pushfl\n\t"
- "popl %0\n\t"
- "popfl\n\t"
- : "=&r" (f1), "=&r" (f2)
- : "ir" (flag));
-
- return ((f1^f2) & flag) != 0;
-}
-
-
-/* Probe for the CPUID instruction */
-static int __init have_cpuid_p(void)
-{
- return flag_is_changeable_p(X86_EFLAGS_ID);
-}
-
-
-
-#if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
-unsigned char eddnr;
-struct edd_info edd[EDDMAXNR];
-unsigned int edd_disk80_sig;
-/**
- * copy_edd() - Copy the BIOS EDD information
- * from empty_zero_page into a safe place.
- *
- */
-static inline void copy_edd(void)
-{
- eddnr = EDD_NR;
- memcpy(edd, EDD_BUF, sizeof(edd));
- edd_disk80_sig = DISK80_SIGNATURE_BUFFER;
-}
-#else
-static inline void copy_edd(void) {}
-#endif
-
-/*
- * This does the hard work of actually picking apart the CPU stuff...
- */
-void __init identify_cpu(struct cpuinfo_x86 *c)
-{
- int junk, i;
- u32 xlvl, tfms;
-
- c->loops_per_jiffy = loops_per_jiffy;
- c->x86_cache_size = -1;
- c->x86_vendor = X86_VENDOR_UNKNOWN;
- c->cpuid_level = -1; /* CPUID not detected */
- c->x86_model = c->x86_mask = 0; /* So far unknown... */
- c->x86_vendor_id[0] = '\0'; /* Unset */
- c->x86_model_id[0] = '\0'; /* Unset */
- memset(&c->x86_capability, 0, sizeof c->x86_capability);
- c->hard_math = 1;
-
- if ( !have_cpuid_p() ) {
- panic("Processor must support CPUID\n");
- } else {
- /* CPU does have CPUID */
-
- /* Get vendor name */
- cpuid(0x00000000, &c->cpuid_level,
- (int *)&c->x86_vendor_id[0],
- (int *)&c->x86_vendor_id[8],
- (int *)&c->x86_vendor_id[4]);
-
- get_cpu_vendor(c);
- /* Initialize the standard set of capabilities */
- /* Note that the vendor-specific code below might override */
-
- /* Intel-defined flags: level 0x00000001 */
- if ( c->cpuid_level >= 0x00000001 ) {
- u32 capability, excap;
- cpuid(0x00000001, &tfms, &junk, &excap, &capability);
- c->x86_capability[0] = capability;
- c->x86_capability[4] = excap;
- c->x86 = (tfms >> 8) & 15;
- c->x86_model = (tfms >> 4) & 15;
- if (c->x86 == 0xf) {
- c->x86 += (tfms >> 20) & 0xff;
- c->x86_model += ((tfms >> 16) & 0xF) << 4;
- }
- c->x86_mask = tfms & 15;
- } else {
- /* Have CPUID level 0 only - unheard of */
- c->x86 = 4;
- }
-
- /* AMD-defined flags: level 0x80000001 */
- xlvl = cpuid_eax(0x80000000);
- if ( (xlvl & 0xffff0000) == 0x80000000 ) {
- if ( xlvl >= 0x80000001 )
- c->x86_capability[1] = cpuid_edx(0x80000001);
- if ( xlvl >= 0x80000004 )
- get_model_name(c); /* Default name */
- }
-
- /* Transmeta-defined flags: level 0x80860001 */
- xlvl = cpuid_eax(0x80860000);
- if ( (xlvl & 0xffff0000) == 0x80860000 ) {
- if ( xlvl >= 0x80860001 )
- c->x86_capability[2] = cpuid_edx(0x80860001);
- }
- }
-
- printk(KERN_DEBUG "CPU: Before vendor init, caps: %08x %08x %08x, vendor =
%d\n",
- c->x86_capability[0],
- c->x86_capability[1],
- c->x86_capability[2],
- c->x86_vendor);
-
- /*
- * Vendor-specific initialization. In this section we
- * canonicalize the feature flags, meaning if there are
- * features a certain CPU supports which CPUID doesn't
- * tell us, CPUID claiming incorrect flags, or other bugs,
- * we handle them here.
- *
- * At the end of this section, c->x86_capability better
- * indicate the features this CPU genuinely supports!
- */
- switch ( c->x86_vendor ) {
- case X86_VENDOR_AMD:
- init_amd(c);
- break;
-
- case X86_VENDOR_INTEL:
- init_intel(c);
- break;
-
- case X86_VENDOR_CENTAUR:
- init_centaur(c);
- break;
-
- default:
- printk("Unsupported CPU vendor (%d) -- please report!\n",
- c->x86_vendor);
- }
-
- printk(KERN_DEBUG "CPU: After vendor init, caps: %08x %08x %08x %08x\n",
- c->x86_capability[0],
- c->x86_capability[1],
- c->x86_capability[2],
- c->x86_capability[3]);
-
-
- /* If the model name is still unset, do table lookup. */
- if ( !c->x86_model_id[0] ) {
- char *p;
- p = table_lookup_model(c);
- if ( p )
- strcpy(c->x86_model_id, p);
- else
- /* Last resort... */
- sprintf(c->x86_model_id, "%02x/%02x",
- c->x86_vendor, c->x86_model);
- }
-
- /* Now the feature flags better reflect actual CPU features! */
-
- printk(KERN_DEBUG "CPU: After generic, caps: %08x %08x %08x %08x\n",
- c->x86_capability[0],
- c->x86_capability[1],
- c->x86_capability[2],
- c->x86_capability[3]);
-
- /*
- * On SMP, boot_cpu_data holds the common feature set between
- * all CPUs; so make sure that we indicate which features are
- * common between the CPUs. The first time this routine gets
- * executed, c == &boot_cpu_data.
- */
- if ( c != &boot_cpu_data ) {
- /* AND the already accumulated flags with these */
- for ( i = 0 ; i < NCAPINTS ; i++ )
- boot_cpu_data.x86_capability[i] &= c->x86_capability[i];
- }
-
- printk(KERN_DEBUG "CPU: Common caps: %08x %08x %08x %08x\n",
- boot_cpu_data.x86_capability[0],
- boot_cpu_data.x86_capability[1],
- boot_cpu_data.x86_capability[2],
- boot_cpu_data.x86_capability[3]);
-}
-
-
-/* These need to match <asm/processor.h> */
-static char *cpu_vendor_names[] __initdata = {
- "Intel", "Cyrix", "AMD", "UMC", "NexGen", "Centaur", "Rise", "Transmeta" };
-
-
-void __init print_cpu_info(struct cpuinfo_x86 *c)
-{
- char *vendor = NULL;
-
- if (c->x86_vendor < sizeof(cpu_vendor_names)/sizeof(char *))
- vendor = cpu_vendor_names[c->x86_vendor];
- else if (c->cpuid_level >= 0)
- vendor = c->x86_vendor_id;
-
- if (vendor && strncmp(c->x86_model_id, vendor, strlen(vendor)))
- printk("%s ", vendor);
-
- if (!c->x86_model_id[0])
- printk("%d86", c->x86);
- else
- printk("%s", c->x86_model_id);
-
- if (c->x86_mask || c->cpuid_level >= 0)
- printk(" stepping %02x\n", c->x86_mask);
- else
- printk("\n");
-}
-
-/*
- * Get CPU information for use by the procfs.
- */
-static int show_cpuinfo(struct seq_file *m, void *v)
-{
- /*
- * These flag bits must match the definitions in <asm/cpufeature.h>.
- * NULL means this bit is undefined or reserved; either way it doesn't
- * have meaning as far as Linux is concerned. Note that it's important
- * to realize there is a difference between this table and CPUID -- if
- * applications want to get the raw CPUID data, they should access
- * /dev/cpu/<cpu_nr>/cpuid instead.
- */
- static char *x86_cap_flags[] = {
- /* Intel-defined */
- "fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce",
- "cx8", "apic", NULL, "sep", "mtrr", "pge", "mca", "cmov",
- "pat", "pse36", "pn", "clflush", NULL, "dts", "acpi", "mmx",
- "fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", "pbe",
-
- /* AMD-defined */
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, "syscall", NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, "mp", NULL, NULL, "mmxext", NULL,
- NULL, NULL, NULL, NULL, NULL, "lm", "3dnowext", "3dnow",
-
- /* Transmeta-defined */
- "recovery", "longrun", NULL, "lrti", NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
- /* Other (Linux-defined) */
- "cxmmx", "k6_mtrr", "cyrix_arr", "centaur_mcr",
- NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
- /* Intel-defined (#2) */
- "pni", NULL, NULL, "monitor", "ds_cpl", NULL, NULL, "tm2",
- "est", NULL, "cid", NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
- /* VIA/Cyrix/Centaur-defined */
- NULL, NULL, "xstore", NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
- };
- struct cpuinfo_x86 *c = v;
- int i, n = c - cpu_data;
- int fpu_exception;
-
-#ifdef CONFIG_SMP
- if (!(cpu_online_map & (1<<n)))
- return 0;
-#endif
- seq_printf(m, "processor\t: %d\n"
- "vendor_id\t: %s\n"
- "cpu family\t: %d\n"
- "model\t\t: %d\n"
- "model name\t: %s\n",
- n,
- c->x86_vendor_id[0] ? c->x86_vendor_id : "unknown",
- c->x86,
- c->x86_model,
- c->x86_model_id[0] ? c->x86_model_id : "unknown");
-
- if (c->x86_mask || c->cpuid_level >= 0)
- seq_printf(m, "stepping\t: %d\n", c->x86_mask);
- else
- seq_printf(m, "stepping\t: unknown\n");
-
- if ( test_bit(X86_FEATURE_TSC, &c->x86_capability) ) {
- seq_printf(m, "cpu MHz\t\t: %lu.%03lu\n",
- cpu_khz / 1000, (cpu_khz % 1000));
- }
-
- /* Cache size */
- if (c->x86_cache_size >= 0)
- seq_printf(m, "cache size\t: %d KB\n", c->x86_cache_size);
-
- /* We use exception 16 if we have hardware math and we've either seen
it or the CPU claims it is internal */
- fpu_exception = c->hard_math && (ignore_irq13 || cpu_has_fpu);
- seq_printf(m, "fdiv_bug\t: %s\n"
- "hlt_bug\t\t: %s\n"
- "f00f_bug\t: %s\n"
- "coma_bug\t: %s\n"
- "fpu\t\t: %s\n"
- "fpu_exception\t: %s\n"
- "cpuid level\t: %d\n"
- "wp\t\t: %s\n"
- "flags\t\t:",
- c->fdiv_bug ? "yes" : "no",
- c->hlt_works_ok ? "no" : "yes",
- c->f00f_bug ? "yes" : "no",
- c->coma_bug ? "yes" : "no",
- c->hard_math ? "yes" : "no",
- fpu_exception ? "yes" : "no",
- c->cpuid_level,
- c->wp_works_ok ? "yes" : "no");
-
- for ( i = 0 ; i < 32*NCAPINTS ; i++ )
- if ( test_bit(i, &c->x86_capability) &&
- x86_cap_flags[i] != NULL )
- seq_printf(m, " %s", x86_cap_flags[i]);
-
- seq_printf(m, "\nbogomips\t: %lu.%02lu\n\n",
- c->loops_per_jiffy/(500000/HZ),
- (c->loops_per_jiffy/(5000/HZ)) % 100);
- return 0;
-}
-
-static void *c_start(struct seq_file *m, loff_t *pos)
-{
- return *pos < NR_CPUS ? cpu_data + *pos : NULL;
-}
-static void *c_next(struct seq_file *m, void *v, loff_t *pos)
-{
- ++*pos;
- return c_start(m, pos);
-}
-static void c_stop(struct seq_file *m, void *v)
-{
-}
-struct seq_operations cpuinfo_op = {
- start: c_start,
- next: c_next,
- stop: c_stop,
- show: show_cpuinfo,
-};
-
-unsigned long cpu_initialized __initdata = 0;
-
-/*
- * cpu_init() initializes state that is per-CPU. Some data is already
- * initialized (naturally) in the bootstrap process, such as the GDT
- * and IDT. We reload them nevertheless, this function acts as a
- * 'CPU state barrier', nothing should get across.
- */
-void __init cpu_init (void)
-{
- int nr = smp_processor_id();
-
- if (test_and_set_bit(nr, &cpu_initialized)) {
- printk(KERN_WARNING "CPU#%d already initialized!\n", nr);
- for (;;) __sti();
- }
- printk(KERN_INFO "Initializing CPU#%d\n", nr);
-
- /*
- * set up and load the per-CPU TSS and LDT
- */
- atomic_inc(&init_mm.mm_count);
- current->active_mm = &init_mm;
- if(current->mm)
- BUG();
- enter_lazy_tlb(&init_mm, current, nr);
-
- HYPERVISOR_stack_switch(__KERNEL_DS, current->thread.esp0);
-
- load_LDT(&init_mm.context);
-
- /* Force FPU initialization. */
- current->flags &= ~PF_USEDFPU;
- current->used_math = 0;
- stts();
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/kernel/signal.c
--- a/linux-2.4.30-xen-sparse/arch/xen/kernel/signal.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,717 +0,0 @@
-/*
- * linux/arch/i386/kernel/signal.c
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- *
- * 1997-11-28 Modified for POSIX.1b signals by Richard Henderson
- * 2000-06-20 Pentium III FXSR, SSE support by Gareth Hughes
- */
-
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/smp_lock.h>
-#include <linux/kernel.h>
-#include <linux/signal.h>
-#include <linux/errno.h>
-#include <linux/wait.h>
-#include <linux/ptrace.h>
-#include <linux/unistd.h>
-#include <linux/stddef.h>
-#include <linux/tty.h>
-#include <linux/personality.h>
-#include <asm/ucontext.h>
-#include <asm/uaccess.h>
-#include <asm/i387.h>
-
-#define DEBUG_SIG 0
-
-#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
-
-int FASTCALL(do_signal(struct pt_regs *regs, sigset_t *oldset));
-
-int copy_siginfo_to_user(siginfo_t *to, siginfo_t *from)
-{
- if (!access_ok (VERIFY_WRITE, to, sizeof(siginfo_t)))
- return -EFAULT;
- if (from->si_code < 0)
- return __copy_to_user(to, from, sizeof(siginfo_t));
- else {
- int err;
-
- /* If you change siginfo_t structure, please be sure
- this code is fixed accordingly.
- It should never copy any pad contained in the structure
- to avoid security leaks, but must copy the generic
- 3 ints plus the relevant union member. */
- err = __put_user(from->si_signo, &to->si_signo);
- err |= __put_user(from->si_errno, &to->si_errno);
- err |= __put_user((short)from->si_code, &to->si_code);
- /* First 32bits of unions are always present. */
- err |= __put_user(from->si_pid, &to->si_pid);
- switch (from->si_code >> 16) {
- case __SI_FAULT >> 16:
- break;
- case __SI_CHLD >> 16:
- err |= __put_user(from->si_utime, &to->si_utime);
- err |= __put_user(from->si_stime, &to->si_stime);
- err |= __put_user(from->si_status, &to->si_status);
- default:
- err |= __put_user(from->si_uid, &to->si_uid);
- break;
- /* case __SI_RT: This is not generated by the kernel as of now.
*/
- }
- return err;
- }
-}
-
-/*
- * Atomically swap in the new signal mask, and wait for a signal.
- */
-asmlinkage int
-sys_sigsuspend(int history0, int history1, old_sigset_t mask)
-{
- struct pt_regs * regs = (struct pt_regs *) &history0;
- sigset_t saveset;
-
- mask &= _BLOCKABLE;
- spin_lock_irq(¤t->sigmask_lock);
- saveset = current->blocked;
- siginitset(¤t->blocked, mask);
- recalc_sigpending(current);
- spin_unlock_irq(¤t->sigmask_lock);
-
- regs->eax = -EINTR;
- while (1) {
- current->state = TASK_INTERRUPTIBLE;
- schedule();
- if (do_signal(regs, &saveset))
- return -EINTR;
- }
-}
-
-asmlinkage int
-sys_rt_sigsuspend(sigset_t *unewset, size_t sigsetsize)
-{
- struct pt_regs * regs = (struct pt_regs *) &unewset;
- sigset_t saveset, newset;
-
- /* XXX: Don't preclude handling different sized sigset_t's. */
- if (sigsetsize != sizeof(sigset_t))
- return -EINVAL;
-
- if (copy_from_user(&newset, unewset, sizeof(newset)))
- return -EFAULT;
- sigdelsetmask(&newset, ~_BLOCKABLE);
-
- spin_lock_irq(¤t->sigmask_lock);
- saveset = current->blocked;
- current->blocked = newset;
- recalc_sigpending(current);
- spin_unlock_irq(¤t->sigmask_lock);
-
- regs->eax = -EINTR;
- while (1) {
- current->state = TASK_INTERRUPTIBLE;
- schedule();
- if (do_signal(regs, &saveset))
- return -EINTR;
- }
-}
-
-asmlinkage int
-sys_sigaction(int sig, const struct old_sigaction *act,
- struct old_sigaction *oact)
-{
- struct k_sigaction new_ka, old_ka;
- int ret;
-
- if (act) {
- old_sigset_t mask;
- if (verify_area(VERIFY_READ, act, sizeof(*act)) ||
- __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
- __get_user(new_ka.sa.sa_restorer, &act->sa_restorer))
- return -EFAULT;
- __get_user(new_ka.sa.sa_flags, &act->sa_flags);
- __get_user(mask, &act->sa_mask);
- siginitset(&new_ka.sa.sa_mask, mask);
- }
-
- ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
-
- if (!ret && oact) {
- if (verify_area(VERIFY_WRITE, oact, sizeof(*oact)) ||
- __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
- __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer))
- return -EFAULT;
- __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
- __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
- }
-
- return ret;
-}
-
-asmlinkage int
-sys_sigaltstack(const stack_t *uss, stack_t *uoss)
-{
- struct pt_regs *regs = (struct pt_regs *) &uss;
- return do_sigaltstack(uss, uoss, regs->esp);
-}
-
-
-/*
- * Do a signal return; undo the signal stack.
- */
-
-struct sigframe
-{
- char *pretcode;
- int sig;
- struct sigcontext sc;
- struct _fpstate fpstate;
- unsigned long extramask[_NSIG_WORDS-1];
- char retcode[8];
-};
-
-struct rt_sigframe
-{
- char *pretcode;
- int sig;
- struct siginfo *pinfo;
- void *puc;
- struct siginfo info;
- struct ucontext uc;
- struct _fpstate fpstate;
- char retcode[8];
-};
-
-static int
-restore_sigcontext(struct pt_regs *regs, struct sigcontext *sc, int *peax)
-{
- unsigned int err = 0;
-
-#define COPY(x) err |= __get_user(regs->x, &sc->x)
-
-#define COPY_SEG(seg) \
- { unsigned short tmp; \
- err |= __get_user(tmp, &sc->seg); \
- regs->x##seg = tmp; }
-
-#define COPY_SEG_STRICT(seg) \
- { unsigned short tmp; \
- err |= __get_user(tmp, &sc->seg); \
- regs->x##seg = tmp|3; }
-
-#define GET_SEG(seg) \
- { unsigned short tmp; \
- err |= __get_user(tmp, &sc->seg); \
- loadsegment(seg,tmp); }
-
- GET_SEG(gs);
- GET_SEG(fs);
- COPY_SEG(es);
- COPY_SEG(ds);
- COPY(edi);
- COPY(esi);
- COPY(ebp);
- COPY(esp);
- COPY(ebx);
- COPY(edx);
- COPY(ecx);
- COPY(eip);
- COPY_SEG_STRICT(cs);
- COPY_SEG_STRICT(ss);
-
- {
- unsigned int tmpflags;
- err |= __get_user(tmpflags, &sc->eflags);
- regs->eflags = (regs->eflags & ~0x40DD5) | (tmpflags & 0x40DD5);
- regs->orig_eax = -1; /* disable syscall checks */
- }
-
- {
- struct _fpstate * buf;
- err |= __get_user(buf, &sc->fpstate);
- if (buf) {
- if (verify_area(VERIFY_READ, buf, sizeof(*buf)))
- goto badframe;
- err |= restore_i387(buf);
- }
- }
-
- err |= __get_user(*peax, &sc->eax);
- return err;
-
-badframe:
- return 1;
-}
-
-asmlinkage int sys_sigreturn(unsigned long __unused)
-{
- struct pt_regs *regs = (struct pt_regs *) &__unused;
- struct sigframe *frame = (struct sigframe *)(regs->esp - 8);
- sigset_t set;
- int eax;
-
- if (verify_area(VERIFY_READ, frame, sizeof(*frame)))
- goto badframe;
- if (__get_user(set.sig[0], &frame->sc.oldmask)
- || (_NSIG_WORDS > 1
- && __copy_from_user(&set.sig[1], &frame->extramask,
- sizeof(frame->extramask))))
- goto badframe;
-
- sigdelsetmask(&set, ~_BLOCKABLE);
- spin_lock_irq(¤t->sigmask_lock);
- current->blocked = set;
- recalc_sigpending(current);
- spin_unlock_irq(¤t->sigmask_lock);
-
- if (restore_sigcontext(regs, &frame->sc, &eax))
- goto badframe;
- return eax;
-
-badframe:
- force_sig(SIGSEGV, current);
- return 0;
-}
-
-asmlinkage int sys_rt_sigreturn(unsigned long __unused)
-{
- struct pt_regs *regs = (struct pt_regs *) &__unused;
- struct rt_sigframe *frame = (struct rt_sigframe *)(regs->esp - 4);
- sigset_t set;
- stack_t st;
- int eax;
-
- if (verify_area(VERIFY_READ, frame, sizeof(*frame)))
- goto badframe;
- if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
- goto badframe;
-
- sigdelsetmask(&set, ~_BLOCKABLE);
- spin_lock_irq(¤t->sigmask_lock);
- current->blocked = set;
- recalc_sigpending(current);
- spin_unlock_irq(¤t->sigmask_lock);
-
- if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &eax))
- goto badframe;
-
- if (__copy_from_user(&st, &frame->uc.uc_stack, sizeof(st)))
- goto badframe;
- /* It is more difficult to avoid calling this function than to
- call it and ignore errors. */
- do_sigaltstack(&st, NULL, regs->esp);
-
- return eax;
-
-badframe:
- force_sig(SIGSEGV, current);
- return 0;
-}
-
-/*
- * Set up a signal frame.
- */
-
-static int
-setup_sigcontext(struct sigcontext *sc, struct _fpstate *fpstate,
- struct pt_regs *regs, unsigned long mask)
-{
- int tmp, err = 0;
-
- tmp = 0;
- __asm__("movl %%gs,%0" : "=r"(tmp): "0"(tmp));
- err |= __put_user(tmp, (unsigned int *)&sc->gs);
- __asm__("movl %%fs,%0" : "=r"(tmp): "0"(tmp));
- err |= __put_user(tmp, (unsigned int *)&sc->fs);
-
- err |= __put_user(regs->xes, (unsigned int *)&sc->es);
- err |= __put_user(regs->xds, (unsigned int *)&sc->ds);
- err |= __put_user(regs->edi, &sc->edi);
- err |= __put_user(regs->esi, &sc->esi);
- err |= __put_user(regs->ebp, &sc->ebp);
- err |= __put_user(regs->esp, &sc->esp);
- err |= __put_user(regs->ebx, &sc->ebx);
- err |= __put_user(regs->edx, &sc->edx);
- err |= __put_user(regs->ecx, &sc->ecx);
- err |= __put_user(regs->eax, &sc->eax);
- err |= __put_user(current->thread.trap_no, &sc->trapno);
- err |= __put_user(current->thread.error_code, &sc->err);
- err |= __put_user(regs->eip, &sc->eip);
- err |= __put_user(regs->xcs, (unsigned int *)&sc->cs);
- err |= __put_user(regs->eflags, &sc->eflags);
- err |= __put_user(regs->esp, &sc->esp_at_signal);
- err |= __put_user(regs->xss, (unsigned int *)&sc->ss);
-
- tmp = save_i387(fpstate);
- if (tmp < 0)
- err = 1;
- else
- err |= __put_user(tmp ? fpstate : NULL, &sc->fpstate);
-
- /* non-iBCS2 extensions.. */
- err |= __put_user(mask, &sc->oldmask);
- err |= __put_user(current->thread.cr2, &sc->cr2);
-
- return err;
-}
-
-/*
- * Determine which stack to use..
- */
-static inline void *
-get_sigframe(struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size)
-{
- unsigned long esp;
-
- /* Default to using normal stack */
- esp = regs->esp;
-
- /* This is the X/Open sanctioned signal stack switching. */
- if (ka->sa.sa_flags & SA_ONSTACK) {
- if (sas_ss_flags(esp) == 0)
- esp = current->sas_ss_sp + current->sas_ss_size;
- }
-
- /* This is the legacy signal stack switching. */
- else if ((regs->xss & 0xffff) != __USER_DS &&
- !(ka->sa.sa_flags & SA_RESTORER) &&
- ka->sa.sa_restorer) {
- esp = (unsigned long) ka->sa.sa_restorer;
- }
-
- return (void *)((esp - frame_size) & -8ul);
-}
-
-static void setup_frame(int sig, struct k_sigaction *ka,
- sigset_t *set, struct pt_regs * regs)
-{
- struct sigframe *frame;
- int err = 0;
-
- frame = get_sigframe(ka, regs, sizeof(*frame));
-
- if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
- goto give_sigsegv;
-
- err |= __put_user((current->exec_domain
- && current->exec_domain->signal_invmap
- && sig < 32
- ? current->exec_domain->signal_invmap[sig]
- : sig),
- &frame->sig);
- if (err)
- goto give_sigsegv;
-
- err |= setup_sigcontext(&frame->sc, &frame->fpstate, regs, set->sig[0]);
- if (err)
- goto give_sigsegv;
-
- if (_NSIG_WORDS > 1) {
- err |= __copy_to_user(frame->extramask, &set->sig[1],
- sizeof(frame->extramask));
- }
- if (err)
- goto give_sigsegv;
-
- /* Set up to return from userspace. If provided, use a stub
- already in userspace. */
- if (ka->sa.sa_flags & SA_RESTORER) {
- err |= __put_user(ka->sa.sa_restorer, &frame->pretcode);
- } else {
- err |= __put_user(frame->retcode, &frame->pretcode);
- /* This is popl %eax ; movl $,%eax ; int $0x80 */
- err |= __put_user(0xb858, (short *)(frame->retcode+0));
- err |= __put_user(__NR_sigreturn, (int *)(frame->retcode+2));
- err |= __put_user(0x80cd, (short *)(frame->retcode+6));
- }
-
- if (err)
- goto give_sigsegv;
-
- /* Set up registers for signal handler */
- regs->esp = (unsigned long) frame;
- regs->eip = (unsigned long) ka->sa.sa_handler;
-
- set_fs(USER_DS);
- regs->xds = __USER_DS;
- regs->xes = __USER_DS;
- regs->xss = __USER_DS;
- regs->xcs = __USER_CS;
- regs->eflags &= ~TF_MASK;
-
-#if DEBUG_SIG
- printk("SIG deliver (%s:%d): sp=%p pc=%p ra=%p\n",
- current->comm, current->pid, frame, regs->eip, frame->pretcode);
-#endif
-
- return;
-
-give_sigsegv:
- if (sig == SIGSEGV)
- ka->sa.sa_handler = SIG_DFL;
- force_sig(SIGSEGV, current);
-}
-
-static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
- sigset_t *set, struct pt_regs * regs)
-{
- struct rt_sigframe *frame;
- int err = 0;
-
- frame = get_sigframe(ka, regs, sizeof(*frame));
-
- if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
- goto give_sigsegv;
-
- err |= __put_user((current->exec_domain
- && current->exec_domain->signal_invmap
- && sig < 32
- ? current->exec_domain->signal_invmap[sig]
- : sig),
- &frame->sig);
- err |= __put_user(&frame->info, &frame->pinfo);
- err |= __put_user(&frame->uc, &frame->puc);
- err |= copy_siginfo_to_user(&frame->info, info);
- if (err)
- goto give_sigsegv;
-
- /* Create the ucontext. */
- err |= __put_user(0, &frame->uc.uc_flags);
- err |= __put_user(0, &frame->uc.uc_link);
- err |= __put_user(current->sas_ss_sp, &frame->uc.uc_stack.ss_sp);
- err |= __put_user(sas_ss_flags(regs->esp),
- &frame->uc.uc_stack.ss_flags);
- err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
- err |= setup_sigcontext(&frame->uc.uc_mcontext, &frame->fpstate,
- regs, set->sig[0]);
- err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
- if (err)
- goto give_sigsegv;
-
- /* Set up to return from userspace. If provided, use a stub
- already in userspace. */
- if (ka->sa.sa_flags & SA_RESTORER) {
- err |= __put_user(ka->sa.sa_restorer, &frame->pretcode);
- } else {
- err |= __put_user(frame->retcode, &frame->pretcode);
- /* This is movl $,%eax ; int $0x80 */
- err |= __put_user(0xb8, (char *)(frame->retcode+0));
- err |= __put_user(__NR_rt_sigreturn, (int *)(frame->retcode+1));
- err |= __put_user(0x80cd, (short *)(frame->retcode+5));
- }
-
- if (err)
- goto give_sigsegv;
-
- /* Set up registers for signal handler */
- regs->esp = (unsigned long) frame;
- regs->eip = (unsigned long) ka->sa.sa_handler;
-
- set_fs(USER_DS);
- regs->xds = __USER_DS;
- regs->xes = __USER_DS;
- regs->xss = __USER_DS;
- regs->xcs = __USER_CS;
- regs->eflags &= ~TF_MASK;
-
-#if DEBUG_SIG
- printk("SIG deliver (%s:%d): sp=%p pc=%p ra=%p\n",
- current->comm, current->pid, frame, regs->eip, frame->pretcode);
-#endif
-
- return;
-
-give_sigsegv:
- if (sig == SIGSEGV)
- ka->sa.sa_handler = SIG_DFL;
- force_sig(SIGSEGV, current);
-}
-
-/*
- * OK, we're invoking a handler
- */
-
-static void
-handle_signal(unsigned long sig, struct k_sigaction *ka,
- siginfo_t *info, sigset_t *oldset, struct pt_regs * regs)
-{
- /* Are we from a system call? */
- if (regs->orig_eax >= 0) {
- /* If so, check system call restarting.. */
- switch (regs->eax) {
- case -ERESTARTNOHAND:
- regs->eax = -EINTR;
- break;
-
- case -ERESTARTSYS:
- if (!(ka->sa.sa_flags & SA_RESTART)) {
- regs->eax = -EINTR;
- break;
- }
- /* fallthrough */
- case -ERESTARTNOINTR:
- regs->eax = regs->orig_eax;
- regs->eip -= 2;
- }
- }
-
- /* Set up the stack frame */
- if (ka->sa.sa_flags & SA_SIGINFO)
- setup_rt_frame(sig, ka, info, oldset, regs);
- else
- setup_frame(sig, ka, oldset, regs);
-
- if (ka->sa.sa_flags & SA_ONESHOT)
- ka->sa.sa_handler = SIG_DFL;
-
- if (!(ka->sa.sa_flags & SA_NODEFER)) {
- spin_lock_irq(¤t->sigmask_lock);
- sigorsets(¤t->blocked,¤t->blocked,&ka->sa.sa_mask);
- sigaddset(¤t->blocked,sig);
- recalc_sigpending(current);
- spin_unlock_irq(¤t->sigmask_lock);
- }
-}
-
-/*
- * Note that 'init' is a special process: it doesn't get signals it doesn't
- * want to handle. Thus you cannot kill init even with a SIGKILL even by
- * mistake.
- */
-int fastcall do_signal(struct pt_regs *regs, sigset_t *oldset)
-{
- siginfo_t info;
- struct k_sigaction *ka;
-
- /*
- * We want the common case to go fast, which
- * is why we may in certain cases get here from
- * kernel mode. Just return without doing anything
- * if so.
- */
- if ((regs->xcs & 2) != 2)
- return 1;
-
- if (!oldset)
- oldset = ¤t->blocked;
-
- for (;;) {
- unsigned long signr;
-
- spin_lock_irq(¤t->sigmask_lock);
- signr = dequeue_signal(¤t->blocked, &info);
- spin_unlock_irq(¤t->sigmask_lock);
-
- if (!signr)
- break;
-
- if ((current->ptrace & PT_PTRACED) && signr != SIGKILL) {
- /* Let the debugger run. */
- current->exit_code = signr;
- current->state = TASK_STOPPED;
- notify_parent(current, SIGCHLD);
- schedule();
-
- /* We're back. Did the debugger cancel the sig? */
- if (!(signr = current->exit_code))
- continue;
- current->exit_code = 0;
-
- /* The debugger continued. Ignore SIGSTOP. */
- if (signr == SIGSTOP)
- continue;
-
- /* Update the siginfo structure. Is this good? */
- if (signr != info.si_signo) {
- info.si_signo = signr;
- info.si_errno = 0;
- info.si_code = SI_USER;
- info.si_pid = current->p_pptr->pid;
- info.si_uid = current->p_pptr->uid;
- }
-
- /* If the (new) signal is now blocked, requeue it. */
- if (sigismember(¤t->blocked, signr)) {
- send_sig_info(signr, &info, current);
- continue;
- }
- }
-
- ka = ¤t->sig->action[signr-1];
- if (ka->sa.sa_handler == SIG_IGN) {
- if (signr != SIGCHLD)
- continue;
- /* Check for SIGCHLD: it's special. */
- while (sys_wait4(-1, NULL, WNOHANG, NULL) > 0)
- /* nothing */;
- continue;
- }
-
- if (ka->sa.sa_handler == SIG_DFL) {
- int exit_code = signr;
-
- /* Init gets no signals it doesn't want. */
- if (current->pid == 1)
- continue;
-
- switch (signr) {
- case SIGCONT: case SIGCHLD: case SIGWINCH: case SIGURG:
- continue;
-
- case SIGTSTP: case SIGTTIN: case SIGTTOU:
- if (is_orphaned_pgrp(current->pgrp))
- continue;
- /* FALLTHRU */
-
- case SIGSTOP: {
- struct signal_struct *sig;
- current->state = TASK_STOPPED;
- current->exit_code = signr;
- sig = current->p_pptr->sig;
- if (sig && !(sig->action[SIGCHLD-1].sa.sa_flags
& SA_NOCLDSTOP))
- notify_parent(current, SIGCHLD);
- schedule();
- continue;
- }
-
- case SIGQUIT: case SIGILL: case SIGTRAP:
- case SIGABRT: case SIGFPE: case SIGSEGV:
- case SIGBUS: case SIGSYS: case SIGXCPU: case SIGXFSZ:
- if (do_coredump(signr, regs))
- exit_code |= 0x80;
- /* FALLTHRU */
-
- default:
- sig_exit(signr, exit_code, &info);
- /* NOTREACHED */
- }
- }
-
- /* Reenable any watchpoints before delivering the
- * signal to user space. The processor register will
- * have been cleared if the watchpoint triggered
- * inside the kernel.
- */
- if ( current->thread.debugreg[7] != 0 )
- HYPERVISOR_set_debugreg(7, current->thread.debugreg[7]);
-
- /* Whee! Actually deliver the signal. */
- handle_signal(signr, ka, &info, oldset, regs);
- return 1;
- }
-
- /* Did we come from a system call? */
- if (regs->orig_eax >= 0) {
- /* Restart the system call - no handlers present */
- if (regs->eax == -ERESTARTNOHAND ||
- regs->eax == -ERESTARTSYS ||
- regs->eax == -ERESTARTNOINTR) {
- regs->eax = regs->orig_eax;
- regs->eip -= 2;
- }
- }
- return 0;
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/kernel/time.c
--- a/linux-2.4.30-xen-sparse/arch/xen/kernel/time.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,721 +0,0 @@
-/* -*- Mode:C; c-basic-offset:4; tab-width:4 -*-
- ****************************************************************************
- * (C) 2002-2003 - Rolf Neugebauer - Intel Research Cambridge
- * (C) 2002-2003 - Keir Fraser - University of Cambridge
- ****************************************************************************
- *
- * File: arch/xen/kernel/time.c
- * Author: Rolf Neugebauer and Keir Fraser
- *
- * Description: Interface with Xen to get correct notion of time
- */
-
-/*
- * linux/arch/i386/kernel/time.c
- *
- * Copyright (C) 1991, 1992, 1995 Linus Torvalds
- *
- * This file contains the PC-specific time handling details:
- * reading the RTC at bootup, etc..
- * 1994-07-02 Alan Modra
- * fixed set_rtc_mmss, fixed time.year for >= 2000, new mktime
- * 1995-03-26 Markus Kuhn
- * fixed 500 ms bug at call to set_rtc_mmss, fixed DS12887
- * precision CMOS clock update
- * 1996-05-03 Ingo Molnar
- * fixed time warps in do_[slow|fast]_gettimeoffset()
- * 1997-09-10 Updated NTP code according to technical memorandum Jan '96
- * "A Kernel Model for Precision Timekeeping" by Dave Mills
- * 1998-09-05 (Various)
- * More robust do_fast_gettimeoffset() algorithm implemented
- * (works with APM, Cyrix 6x86MX and Centaur C6),
- * monotonic gettimeofday() with fast_get_timeoffset(),
- * drift-proof precision TSC calibration on boot
- * (C. Scott Ananian <cananian@xxxxxxxxxxxxxxxxxxxx>, Andrew D.
- * Balsa <andrebalsa@xxxxxxxxxx>, Philip Gladstone <philip@xxxxxxxxxx>;
- * ported from 2.0.35 Jumbo-9 by Michael Krause <m.krause@xxxxxxxxxxxxx>).
- * 1998-12-16 Andrea Arcangeli
- * Fixed Jumbo-9 code in 2.1.131: do_gettimeofday was missing 1 jiffy
- * because was not accounting lost_ticks.
- * 1998-12-24 Copyright (C) 1998 Andrea Arcangeli
- * Fixed a xtime SMP race (we need the xtime_lock rw spinlock to
- * serialize accesses to xtime/lost_ticks).
- */
-
-#include <asm/smp.h>
-#include <asm/irq.h>
-#include <asm/msr.h>
-#include <asm/delay.h>
-#include <asm/mpspec.h>
-#include <asm/uaccess.h>
-#include <asm/processor.h>
-
-#include <asm/div64.h>
-#include <asm/hypervisor.h>
-#include <asm-xen/xen-public/dom0_ops.h>
-
-#include <linux/mc146818rtc.h>
-#include <linux/kernel.h>
-#include <linux/interrupt.h>
-#include <linux/time.h>
-#include <linux/init.h>
-#include <linux/smp.h>
-#include <linux/irq.h>
-#include <linux/sysctl.h>
-#include <linux/sysrq.h>
-
-spinlock_t rtc_lock = SPIN_LOCK_UNLOCKED;
-extern rwlock_t xtime_lock;
-extern unsigned long wall_jiffies;
-
-unsigned long cpu_khz; /* get this from Xen, used elsewhere */
-
-static unsigned int rdtsc_bitshift;
-static u32 st_scale_f; /* convert ticks -> usecs */
-static u32 st_scale_i; /* convert ticks -> usecs */
-
-/* These are peridically updated in shared_info, and then copied here. */
-static u32 shadow_tsc_stamp;
-static u64 shadow_system_time;
-static u32 shadow_time_version;
-static struct timeval shadow_tv;
-
-/*
- * We use this to ensure that gettimeofday() is monotonically increasing. We
- * only break this guarantee if the wall clock jumps backwards "a long way".
- */
-static struct timeval last_seen_tv = {0,0};
-
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
-/* Periodically propagate synchronised time base to the RTC and to Xen. */
-static long last_update_to_rtc, last_update_to_xen;
-#endif
-
-/* Periodically take synchronised time base from Xen, if we need it. */
-static long last_update_from_xen; /* UTC seconds when last read Xen clock. */
-
-/* Keep track of last time we did processing/updating of jiffies and xtime. */
-static u64 processed_system_time; /* System time (ns) at last processing. */
-
-#define NS_PER_TICK (1000000000ULL/HZ)
-
-#ifndef NSEC_PER_SEC
-#define NSEC_PER_SEC (1000000000L)
-#endif
-
-#define HANDLE_USEC_UNDERFLOW(_tv) \
- do { \
- while ( (_tv).tv_usec < 0 ) \
- { \
- (_tv).tv_usec += 1000000; \
- (_tv).tv_sec--; \
- } \
- } while ( 0 )
-#define HANDLE_USEC_OVERFLOW(_tv) \
- do { \
- while ( (_tv).tv_usec >= 1000000 ) \
- { \
- (_tv).tv_usec -= 1000000; \
- (_tv).tv_sec++; \
- } \
- } while ( 0 )
-static inline void __normalize_time(time_t *sec, s64 *nsec)
-{
- while (*nsec >= NSEC_PER_SEC) {
- (*nsec) -= NSEC_PER_SEC;
- (*sec)++;
- }
- while (*nsec < 0) {
- (*nsec) += NSEC_PER_SEC;
- (*sec)--;
- }
-}
-
-/* Dynamically-mapped IRQs. */
-static int time_irq, debug_irq;
-
-/* Does this guest OS track Xen time, or set its wall clock independently? */
-static int independent_wallclock = 0;
-static int __init __independent_wallclock(char *str)
-{
- independent_wallclock = 1;
- return 1;
-}
-__setup("independent_wallclock", __independent_wallclock);
-#define INDEPENDENT_WALLCLOCK() \
- (independent_wallclock || (xen_start_info.flags & SIF_INITDOMAIN))
-
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
-/*
- * In order to set the CMOS clock precisely, set_rtc_mmss has to be
- * called 500 ms after the second nowtime has started, because when
- * nowtime is written into the registers of the CMOS clock, it will
- * jump to the next second precisely 500 ms later. Check the Motorola
- * MC146818A or Dallas DS12887 data sheet for details.
- *
- * BUG: This routine does not handle hour overflow properly; it just
- * sets the minutes. Usually you'll only notice that after reboot!
- */
-static int set_rtc_mmss(unsigned long nowtime)
-{
- int retval = 0;
- int real_seconds, real_minutes, cmos_minutes;
- unsigned char save_control, save_freq_select;
-
- /* gets recalled with irq locally disabled */
- spin_lock(&rtc_lock);
- save_control = CMOS_READ(RTC_CONTROL);
- CMOS_WRITE((save_control|RTC_SET), RTC_CONTROL);
-
- save_freq_select = CMOS_READ(RTC_FREQ_SELECT);
- CMOS_WRITE((save_freq_select|RTC_DIV_RESET2), RTC_FREQ_SELECT);
-
- cmos_minutes = CMOS_READ(RTC_MINUTES);
- if ( !(save_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD )
- BCD_TO_BIN(cmos_minutes);
-
- /*
- * since we're only adjusting minutes and seconds, don't interfere with
- * hour overflow. This avoids messing with unknown time zones but requires
- * your RTC not to be off by more than 15 minutes
- */
- real_seconds = nowtime % 60;
- real_minutes = nowtime / 60;
- if ( ((abs(real_minutes - cmos_minutes) + 15)/30) & 1 )
- real_minutes += 30; /* correct for half hour time zone */
- real_minutes %= 60;
-
- if ( abs(real_minutes - cmos_minutes) < 30 )
- {
- if ( !(save_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD )
- {
- BIN_TO_BCD(real_seconds);
- BIN_TO_BCD(real_minutes);
- }
- CMOS_WRITE(real_seconds,RTC_SECONDS);
- CMOS_WRITE(real_minutes,RTC_MINUTES);
- }
- else
- {
- printk(KERN_WARNING
- "set_rtc_mmss: can't update from %d to %d\n",
- cmos_minutes, real_minutes);
- retval = -1;
- }
-
- /* The following flags have to be released exactly in this order,
- * otherwise the DS12887 (popular MC146818A clone with integrated
- * battery and quartz) will not reset the oscillator and will not
- * update precisely 500 ms later. You won't find this mentioned in
- * the Dallas Semiconductor data sheets, but who believes data
- * sheets anyway ... -- Markus Kuhn
- */
- CMOS_WRITE(save_control, RTC_CONTROL);
- CMOS_WRITE(save_freq_select, RTC_FREQ_SELECT);
- spin_unlock(&rtc_lock);
-
- return retval;
-}
-#endif
-
-
-/*
- * Reads a consistent set of time-base values from Xen, into a shadow data
- * area. Must be called with the xtime_lock held for writing.
- */
-static void __get_time_values_from_xen(void)
-{
- do {
- shadow_time_version = HYPERVISOR_shared_info->time_version2;
- rmb();
- shadow_tv.tv_sec = HYPERVISOR_shared_info->wc_sec;
- shadow_tv.tv_usec = HYPERVISOR_shared_info->wc_usec;
- shadow_tsc_stamp =
- (u32)(HYPERVISOR_shared_info->tsc_timestamp >> rdtsc_bitshift);
- shadow_system_time = HYPERVISOR_shared_info->system_time;
- rmb();
- }
- while ( shadow_time_version != HYPERVISOR_shared_info->time_version1 );
-}
-
-#define TIME_VALUES_UP_TO_DATE \
- ({ rmb(); (shadow_time_version == HYPERVISOR_shared_info->time_version2); })
-
-
-/*
- * Returns the system time elapsed, in ns, since the current shadow_timestamp
- * was calculated. Must be called with the xtime_lock held for reading.
- */
-static inline unsigned long __get_time_delta_usecs(void)
-{
- s32 delta_tsc;
- u32 low;
- u64 delta, tsc;
-
- rdtscll(tsc);
- low = (u32)(tsc >> rdtsc_bitshift);
- delta_tsc = (s32)(low - shadow_tsc_stamp);
- if ( unlikely(delta_tsc < 0) ) delta_tsc = 0;
- delta = ((u64)delta_tsc * st_scale_f);
- delta >>= 32;
- delta += ((u64)delta_tsc * st_scale_i);
-
- return (unsigned long)delta;
-}
-
-
-/*
- * Returns the current time-of-day in UTC timeval format.
- */
-void do_gettimeofday(struct timeval *tv)
-{
- unsigned long flags, lost;
- struct timeval _tv;
- s64 nsec;
-
- again:
- read_lock_irqsave(&xtime_lock, flags);
-
- _tv.tv_usec = __get_time_delta_usecs();
- if ( (lost = (jiffies - wall_jiffies)) != 0 )
- _tv.tv_usec += lost * (1000000 / HZ);
- _tv.tv_sec = xtime.tv_sec;
- _tv.tv_usec += xtime.tv_usec;
-
- nsec = shadow_system_time - processed_system_time;
- __normalize_time(&_tv.tv_sec, &nsec);
- _tv.tv_usec += (long)nsec / 1000L;
-
- if ( unlikely(!TIME_VALUES_UP_TO_DATE) )
- {
- /*
- * We may have blocked for a long time, rendering our calculations
- * invalid (e.g. the time delta may have overflowed). Detect that
- * and recalculate with fresh values.
- */
- read_unlock_irqrestore(&xtime_lock, flags);
- write_lock_irqsave(&xtime_lock, flags);
- __get_time_values_from_xen();
- write_unlock_irqrestore(&xtime_lock, flags);
- goto again;
- }
-
- HANDLE_USEC_OVERFLOW(_tv);
-
- /* Ensure that time-of-day is monotonically increasing. */
- if ( (_tv.tv_sec < last_seen_tv.tv_sec) ||
- ((_tv.tv_sec == last_seen_tv.tv_sec) &&
- (_tv.tv_usec < last_seen_tv.tv_usec)) )
- _tv = last_seen_tv;
- last_seen_tv = _tv;
-
- read_unlock_irqrestore(&xtime_lock, flags);
-
- *tv = _tv;
-}
-
-
-/*
- * Sets the current time-of-day based on passed-in UTC timeval parameter.
- */
-void do_settimeofday(struct timeval *tv)
-{
- struct timeval newtv;
- s64 nsec;
- suseconds_t usec;
-
- if ( !INDEPENDENT_WALLCLOCK() )
- return;
-
- write_lock_irq(&xtime_lock);
-
- /*
- * Ensure we don't get blocked for a long time so that our time delta
- * overflows. If that were to happen then our shadow time values would
- * be stale, so we can retry with fresh ones.
- */
- again:
- usec = tv->tv_usec - __get_time_delta_usecs();
-
- nsec = shadow_system_time - processed_system_time;
- __normalize_time(&tv->tv_sec, &nsec);
- usec -= (long)nsec / 1000L;
-
- if ( unlikely(!TIME_VALUES_UP_TO_DATE) )
- {
- __get_time_values_from_xen();
- goto again;
- }
- tv->tv_usec = usec;
-
- HANDLE_USEC_UNDERFLOW(*tv);
-
- newtv = *tv;
-
- tv->tv_usec -= (jiffies - wall_jiffies) * (1000000 / HZ);
- HANDLE_USEC_UNDERFLOW(*tv);
-
- xtime = *tv;
- time_adjust = 0; /* stop active adjtime() */
- time_status |= STA_UNSYNC;
- time_maxerror = NTP_PHASE_LIMIT;
- time_esterror = NTP_PHASE_LIMIT;
-
- /* Reset all our running time counts. They make no sense now. */
- last_seen_tv.tv_sec = 0;
- last_update_from_xen = 0;
-
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
- if ( xen_start_info.flags & SIF_INITDOMAIN )
- {
- dom0_op_t op;
- last_update_to_rtc = last_update_to_xen = 0;
- op.cmd = DOM0_SETTIME;
- op.u.settime.secs = newtv.tv_sec;
- op.u.settime.usecs = newtv.tv_usec;
- op.u.settime.system_time = shadow_system_time;
- write_unlock_irq(&xtime_lock);
- HYPERVISOR_dom0_op(&op);
- }
- else
-#endif
- {
- write_unlock_irq(&xtime_lock);
- }
-}
-
-
-asmlinkage long sys_stime(int *tptr)
-{
- int value;
- struct timeval tv;
-
- if ( !capable(CAP_SYS_TIME) )
- return -EPERM;
-
- if ( get_user(value, tptr) )
- return -EFAULT;
-
- tv.tv_sec = value;
- tv.tv_usec = 0;
-
- do_settimeofday(&tv);
-
- return 0;
-}
-
-
-/* Convert jiffies to system time. Call with xtime_lock held for reading. */
-static inline u64 __jiffies_to_st(unsigned long j)
-{
- return processed_system_time + ((j - jiffies) * NS_PER_TICK);
-}
-
-
-static inline void do_timer_interrupt(int irq, void *dev_id,
- struct pt_regs *regs)
-{
- s64 delta;
- unsigned long ticks = 0;
- long sec_diff;
-
- do {
- __get_time_values_from_xen();
-
- delta = (s64)(shadow_system_time +
- ((s64)__get_time_delta_usecs() * 1000LL) -
- processed_system_time);
- }
- while ( !TIME_VALUES_UP_TO_DATE );
-
- if ( unlikely(delta < 0) )
- {
- printk("Timer ISR: Time went backwards: %lld\n", delta);
- return;
- }
-
- /* Process elapsed jiffies since last call. */
- while ( delta >= NS_PER_TICK )
- {
- ticks++;
- delta -= NS_PER_TICK;
- processed_system_time += NS_PER_TICK;
- }
-
- if ( ticks != 0 )
- {
- do_timer_ticks(ticks);
-
- if ( user_mode(regs) )
- update_process_times_us(ticks, 0);
- else
- update_process_times_us(0, ticks);
- }
-
- /*
- * Take synchronised time from Xen once a minute if we're not
- * synchronised ourselves, and we haven't chosen to keep an independent
- * time base.
- */
- if ( !INDEPENDENT_WALLCLOCK() &&
- ((time_status & STA_UNSYNC) != 0) &&
- (xtime.tv_sec > (last_update_from_xen + 60)) )
- {
- /* Adjust shadow timeval for jiffies that haven't updated xtime yet. */
- shadow_tv.tv_usec -= (jiffies - wall_jiffies) * (1000000/HZ);
- HANDLE_USEC_UNDERFLOW(shadow_tv);
-
- /*
- * Reset our running time counts if they are invalidated by a warp
- * backwards of more than 500ms.
- */
- sec_diff = xtime.tv_sec - shadow_tv.tv_sec;
- if ( unlikely(abs(sec_diff) > 1) ||
- unlikely(((sec_diff * 1000000) +
- xtime.tv_usec - shadow_tv.tv_usec) > 500000) )
- {
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
- last_update_to_rtc = last_update_to_xen = 0;
-#endif
- last_seen_tv.tv_sec = 0;
- }
-
- /* Update our unsynchronised xtime appropriately. */
- xtime = shadow_tv;
-
- last_update_from_xen = xtime.tv_sec;
- }
-
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
- if ( (xen_start_info.flags & SIF_INITDOMAIN) &&
- ((time_status & STA_UNSYNC) == 0) )
- {
- /* Send synchronised time to Xen approximately every minute. */
- if ( xtime.tv_sec > (last_update_to_xen + 60) )
- {
- dom0_op_t op;
- struct timeval tv = xtime;
-
- tv.tv_usec += (jiffies - wall_jiffies) * (1000000/HZ);
- HANDLE_USEC_OVERFLOW(tv);
-
- op.cmd = DOM0_SETTIME;
- op.u.settime.secs = tv.tv_sec;
- op.u.settime.usecs = tv.tv_usec;
- op.u.settime.system_time = shadow_system_time;
- HYPERVISOR_dom0_op(&op);
-
- last_update_to_xen = xtime.tv_sec;
- }
-
- /*
- * If we have an externally synchronized Linux clock, then update CMOS
- * clock accordingly every ~11 minutes. Set_rtc_mmss() has to be called
- * as close as possible to 500 ms before the new second starts.
- */
- if ( (xtime.tv_sec > (last_update_to_rtc + 660)) &&
- (xtime.tv_usec >= (500000 - ((unsigned) tick) / 2)) &&
- (xtime.tv_usec <= (500000 + ((unsigned) tick) / 2)) )
- {
- if ( set_rtc_mmss(xtime.tv_sec) == 0 )
- last_update_to_rtc = xtime.tv_sec;
- else
- last_update_to_rtc = xtime.tv_sec - 600;
- }
- }
-#endif
-}
-
-
-static void timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
- write_lock(&xtime_lock);
- do_timer_interrupt(irq, NULL, regs);
- write_unlock(&xtime_lock);
-}
-
-static struct irqaction irq_timer = {
- timer_interrupt,
- SA_INTERRUPT,
- 0,
- "timer",
- NULL,
- NULL
-};
-
-
-/*
- * This function works out when the the next timer function has to be
- * executed (by looking at the timer list) and sets the Xen one-shot
- * domain timer to the appropriate value. This is typically called in
- * cpu_idle() before the domain blocks.
- *
- * The function returns a non-0 value on error conditions.
- *
- * It must be called with interrupts disabled.
- */
-extern spinlock_t timerlist_lock;
-int set_timeout_timer(void)
-{
- struct timer_list *timer;
- u64 alarm = 0;
- int ret = 0;
-
- spin_lock(&timerlist_lock);
-
- /*
- * This is safe against long blocking (since calculations are not based on
- * TSC deltas). It is also safe against warped system time since
- * suspend-resume is cooperative and we would first get locked out. It is
- * safe against normal updates of jiffies since interrupts are off.
- */
- if ( (timer = next_timer_event()) != NULL )
- alarm = __jiffies_to_st(timer->expires);
-
- /* Tasks on the timer task queue expect to be executed on the next tick. */
- if ( TQ_ACTIVE(tq_timer) )
- alarm = __jiffies_to_st(jiffies + 1);
-
- /* Failure is pretty bad, but we'd best soldier on. */
- if ( HYPERVISOR_set_timer_op(alarm) != 0 )
- ret = -1;
-
- spin_unlock(&timerlist_lock);
-
- return ret;
-}
-
-
-/* Time debugging. */
-static void dbg_time_int(int irq, void *dev_id, struct pt_regs *ptregs)
-{
- unsigned long flags, j;
- u64 s_now, j_st;
- struct timeval s_tv, tv;
-
- struct timer_list *timer;
- u64 t_st;
-
- read_lock_irqsave(&xtime_lock, flags);
- s_tv.tv_sec = shadow_tv.tv_sec;
- s_tv.tv_usec = shadow_tv.tv_usec;
- s_now = shadow_system_time;
- read_unlock_irqrestore(&xtime_lock, flags);
-
- do_gettimeofday(&tv);
-
- j = jiffies;
- j_st = __jiffies_to_st(j);
-
- timer = next_timer_event();
- t_st = __jiffies_to_st(timer->expires);
-
- printk(KERN_ALERT "time: shadow_st=0x%X:%08X\n",
- (u32)(s_now>>32), (u32)s_now);
- printk(KERN_ALERT "time: wct=%lds %ldus shadow_wct=%lds %ldus\n",
- tv.tv_sec, tv.tv_usec, s_tv.tv_sec, s_tv.tv_usec);
- printk(KERN_ALERT "time: jiffies=%lu(0x%X:%08X) timeout=%lu(0x%X:%08X)\n",
- jiffies,(u32)(j_st>>32), (u32)j_st,
- timer->expires,(u32)(t_st>>32), (u32)t_st);
- printk(KERN_ALERT "time: processed_system_time=0x%X:%08X\n",
- (u32)(processed_system_time>>32), (u32)processed_system_time);
-
-#ifdef CONFIG_MAGIC_SYSRQ
- handle_sysrq('t',NULL,NULL,NULL);
-#endif
-}
-
-static struct irqaction dbg_time = {
- dbg_time_int,
- SA_SHIRQ,
- 0,
- "timer_dbg",
- &dbg_time_int,
- NULL
-};
-
-void __init time_init(void)
-{
- unsigned long long alarm;
- u64 __cpu_khz, __cpu_ghz, cpu_freq, scale, scale2;
- unsigned int cpu_ghz;
-
- __cpu_khz = __cpu_ghz = cpu_freq = HYPERVISOR_shared_info->cpu_freq;
- do_div(__cpu_khz, 1000UL);
- cpu_khz = (u32)__cpu_khz;
- do_div(__cpu_ghz, 1000000000UL);
- cpu_ghz = (unsigned int)__cpu_ghz;
-
- printk("Xen reported: %lu.%03lu MHz processor.\n",
- cpu_khz / 1000, cpu_khz % 1000);
-
- xtime.tv_sec = HYPERVISOR_shared_info->wc_sec;
- xtime.tv_usec = HYPERVISOR_shared_info->wc_usec;
- processed_system_time = shadow_system_time;
-
- for ( rdtsc_bitshift = 0; cpu_ghz != 0; rdtsc_bitshift++, cpu_ghz >>= 1 )
- continue;
-
- scale = 1000000LL << (32 + rdtsc_bitshift);
- do_div(scale, (u32)cpu_freq);
-
- if ( (cpu_freq >> 32) != 0 )
- {
- scale2 = 1000000LL << rdtsc_bitshift;
- do_div(scale2, (u32)(cpu_freq>>32));
- scale += scale2;
- }
-
- st_scale_f = scale & 0xffffffff;
- st_scale_i = scale >> 32;
-
- __get_time_values_from_xen();
- processed_system_time = shadow_system_time;
-
- time_irq = bind_virq_to_irq(VIRQ_TIMER);
- debug_irq = bind_virq_to_irq(VIRQ_DEBUG);
-
- (void)setup_irq(time_irq, &irq_timer);
- (void)setup_irq(debug_irq, &dbg_time);
-
- rdtscll(alarm);
-}
-
-void time_suspend(void)
-{
-}
-
-void time_resume(void)
-{
- unsigned long flags;
- write_lock_irqsave(&xtime_lock, flags);
- /* Get timebases for new environment. */
- __get_time_values_from_xen();
- /* Reset our own concept of passage of system time. */
- processed_system_time = shadow_system_time;
- /* Accept a warp in UTC (wall-clock) time. */
- last_seen_tv.tv_sec = 0;
- /* Make sure we resync UTC time with Xen on next timer interrupt. */
- last_update_from_xen = 0;
- write_unlock_irqrestore(&xtime_lock, flags);
-}
-
-/*
- * /proc/sys/xen: This really belongs in another file. It can stay here for
- * now however.
- */
-static ctl_table xen_subtable[] = {
- {1, "independent_wallclock", &independent_wallclock,
- sizeof(independent_wallclock), 0644, NULL, proc_dointvec},
- {0}
-};
-static ctl_table xen_table[] = {
- {123, "xen", NULL, 0, 0555, xen_subtable},
- {0}
-};
-static int __init xen_sysctl_init(void)
-{
- (void)register_sysctl_table(xen_table, 0);
- return 0;
-}
-__initcall(xen_sysctl_init);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/kernel/traps.c
--- a/linux-2.4.30-xen-sparse/arch/xen/kernel/traps.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,619 +0,0 @@
-/*
- * linux/arch/i386/traps.c
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- *
- * Pentium III FXSR, SSE support
- * Gareth Hughes <gareth@xxxxxxxxxxx>, May 2000
- */
-
-/*
- * 'Traps.c' handles hardware traps and faults after we have saved some
- * state in 'asm.s'.
- */
-#include <linux/config.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/ptrace.h>
-#include <linux/timer.h>
-#include <linux/mm.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/spinlock.h>
-#include <linux/interrupt.h>
-#include <linux/highmem.h>
-
-#include <asm/system.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-#include <asm/atomic.h>
-#include <asm/debugreg.h>
-#include <asm/desc.h>
-#include <asm/i387.h>
-
-#include <asm/smp.h>
-#include <asm/pgalloc.h>
-
-#include <asm/hypervisor.h>
-
-#include <linux/irq.h>
-#include <linux/module.h>
-
-asmlinkage int system_call(void);
-asmlinkage void lcall7(void);
-asmlinkage void lcall27(void);
-
-asmlinkage void divide_error(void);
-asmlinkage void debug(void);
-asmlinkage void int3(void);
-asmlinkage void overflow(void);
-asmlinkage void bounds(void);
-asmlinkage void invalid_op(void);
-asmlinkage void device_not_available(void);
-asmlinkage void double_fault(void);
-asmlinkage void coprocessor_segment_overrun(void);
-asmlinkage void invalid_TSS(void);
-asmlinkage void segment_not_present(void);
-asmlinkage void stack_segment(void);
-asmlinkage void general_protection(void);
-asmlinkage void page_fault(void);
-asmlinkage void coprocessor_error(void);
-asmlinkage void simd_coprocessor_error(void);
-asmlinkage void alignment_check(void);
-asmlinkage void fixup_4gb_segment(void);
-asmlinkage void machine_check(void);
-
-int kstack_depth_to_print = 24;
-
-
-/*
- * If the address is either in the .text section of the
- * kernel, or in the vmalloc'ed module regions, it *may*
- * be the address of a calling routine
- */
-
-#ifdef CONFIG_MODULES
-
-extern struct module *module_list;
-extern struct module kernel_module;
-
-static inline int kernel_text_address(unsigned long addr)
-{
- int retval = 0;
- struct module *mod;
-
- if (addr >= (unsigned long) &_stext &&
- addr <= (unsigned long) &_etext)
- return 1;
-
- for (mod = module_list; mod != &kernel_module; mod = mod->next) {
- /* mod_bound tests for addr being inside the vmalloc'ed
- * module area. Of course it'd be better to test only
- * for the .text subset... */
- if (mod_bound(addr, 0, mod)) {
- retval = 1;
- break;
- }
- }
-
- return retval;
-}
-
-#else
-
-static inline int kernel_text_address(unsigned long addr)
-{
- return (addr >= (unsigned long) &_stext &&
- addr <= (unsigned long) &_etext);
-}
-
-#endif
-
-void show_trace(unsigned long * stack)
-{
- int i;
- unsigned long addr;
-
- if (!stack)
- stack = (unsigned long*)&stack;
-
- printk("Call Trace: ");
- i = 1;
- while (((long) stack & (THREAD_SIZE-1)) != 0) {
- addr = *stack++;
- if (kernel_text_address(addr)) {
- if (i && ((i % 6) == 0))
- printk("\n ");
- printk("[<%08lx>] ", addr);
- i++;
- }
- }
- printk("\n");
-}
-
-void show_trace_task(struct task_struct *tsk)
-{
- unsigned long esp = tsk->thread.esp;
-
- /* User space on another CPU? */
- if ((esp ^ (unsigned long)tsk) & (PAGE_MASK<<1))
- return;
- show_trace((unsigned long *)esp);
-}
-
-void show_stack(unsigned long * esp)
-{
- unsigned long *stack;
- int i;
-
- // debugging aid: "show_stack(NULL);" prints the
- // back trace for this cpu.
-
- if(esp==NULL)
- esp=(unsigned long*)&esp;
-
- stack = esp;
- for(i=0; i < kstack_depth_to_print; i++) {
- if (((long) stack & (THREAD_SIZE-1)) == 0)
- break;
- if (i && ((i % 8) == 0))
- printk("\n ");
- printk("%08lx ", *stack++);
- }
- printk("\n");
- show_trace(esp);
-}
-
-void show_registers(struct pt_regs *regs)
-{
- int in_kernel = 1;
- unsigned long esp;
- unsigned short ss;
-
- esp = (unsigned long) (®s->esp);
- ss = __KERNEL_DS;
- if (regs->xcs & 2) {
- in_kernel = 0;
- esp = regs->esp;
- ss = regs->xss & 0xffff;
- }
- printk(KERN_ALERT "CPU: %d\n", smp_processor_id() );
- printk(KERN_ALERT "EIP: %04x:[<%08lx>] %s\n",
- 0xffff & regs->xcs, regs->eip, print_tainted());
- printk(KERN_ALERT "EFLAGS: %08lx\n",regs->eflags);
- printk(KERN_ALERT "eax: %08lx ebx: %08lx ecx: %08lx edx: %08lx\n",
- regs->eax, regs->ebx, regs->ecx, regs->edx);
- printk(KERN_ALERT "esi: %08lx edi: %08lx ebp: %08lx esp: %08lx\n",
- regs->esi, regs->edi, regs->ebp, esp);
- printk(KERN_ALERT "ds: %04x es: %04x ss: %04x\n",
- regs->xds & 0xffff, regs->xes & 0xffff, ss);
- printk(KERN_ALERT "Process %s (pid: %d, stackpage=%08lx)",
- current->comm, current->pid, 4096+(unsigned long)current);
- /*
- * When in-kernel, we also print out the stack and code at the
- * time of the fault..
- */
- if (in_kernel) {
-
- printk(KERN_ALERT "\nStack: ");
- show_stack((unsigned long*)esp);
-
-#if 0
- {
- int i;
- printk(KERN_ALERT "\nCode: ");
- if(regs->eip < PAGE_OFFSET)
- goto bad;
-
- for(i=0;i<20;i++)
- {
- unsigned char c;
- if(__get_user(c, &((unsigned
char*)regs->eip)[i])) {
-bad:
- printk(KERN_ALERT " Bad EIP value.");
- break;
- }
- printk("%02x ", c);
- }
- }
-#endif
- }
- printk(KERN_ALERT "\n");
-}
-
-spinlock_t die_lock = SPIN_LOCK_UNLOCKED;
-
-void die(const char * str, struct pt_regs * regs, long err)
-{
- console_verbose();
- spin_lock_irq(&die_lock);
- bust_spinlocks(1);
- printk("%s: %04lx\n", str, err & 0xffff);
- show_registers(regs);
- bust_spinlocks(0);
- spin_unlock_irq(&die_lock);
- do_exit(SIGSEGV);
-}
-
-static inline void die_if_kernel(const char * str, struct pt_regs * regs, long
err)
-{
- if (!(2 & regs->xcs))
- die(str, regs, err);
-}
-
-
-static void inline do_trap(int trapnr, int signr, char *str,
- struct pt_regs * regs, long error_code,
- siginfo_t *info)
-{
- if (!(regs->xcs & 2))
- goto kernel_trap;
-
- /*trap_signal:*/ {
- struct task_struct *tsk = current;
- tsk->thread.error_code = error_code;
- tsk->thread.trap_no = trapnr;
- if (info)
- force_sig_info(signr, info, tsk);
- else
- force_sig(signr, tsk);
- return;
- }
-
- kernel_trap: {
- unsigned long fixup = search_exception_table(regs->eip);
- if (fixup)
- regs->eip = fixup;
- else
- die(str, regs, error_code);
- return;
- }
-}
-
-#define DO_ERROR(trapnr, signr, str, name) \
-asmlinkage void do_##name(struct pt_regs * regs, long error_code) \
-{ \
- do_trap(trapnr, signr, str, regs, error_code, NULL); \
-}
-
-#define DO_ERROR_INFO(trapnr, signr, str, name, sicode, siaddr) \
-asmlinkage void do_##name(struct pt_regs * regs, long error_code) \
-{ \
- siginfo_t info; \
- info.si_signo = signr; \
- info.si_errno = 0; \
- info.si_code = sicode; \
- info.si_addr = (void *)siaddr; \
- do_trap(trapnr, signr, str, regs, error_code, &info); \
-}
-
-DO_ERROR_INFO( 0, SIGFPE, "divide error", divide_error, FPE_INTDIV, regs->eip)
-DO_ERROR( 3, SIGTRAP, "int3", int3)
-DO_ERROR( 4, SIGSEGV, "overflow", overflow)
-DO_ERROR( 5, SIGSEGV, "bounds", bounds)
-DO_ERROR_INFO( 6, SIGILL, "invalid operand", invalid_op, ILL_ILLOPN,
regs->eip)
-DO_ERROR( 7, SIGSEGV, "device not available", device_not_available)
-DO_ERROR( 8, SIGSEGV, "double fault", double_fault)
-DO_ERROR( 9, SIGFPE, "coprocessor segment overrun",
coprocessor_segment_overrun)
-DO_ERROR(10, SIGSEGV, "invalid TSS", invalid_TSS)
-DO_ERROR(11, SIGBUS, "segment not present", segment_not_present)
-DO_ERROR(12, SIGBUS, "stack segment", stack_segment)
-DO_ERROR_INFO(17, SIGBUS, "alignment check", alignment_check, BUS_ADRALN, 0)
-DO_ERROR(18, SIGBUS, "machine check", machine_check)
-
-asmlinkage void do_general_protection(struct pt_regs * regs, long error_code)
-{
- /*
- * If we trapped on an LDT access then ensure that the default_ldt is
- * loaded, if nothing else. We load default_ldt lazily because LDT
- * switching costs time and many applications don't need it.
- */
- if ( unlikely((error_code & 6) == 4) )
- {
- unsigned long ldt;
- __asm__ __volatile__ ( "sldt %0" : "=r" (ldt) );
- if ( ldt == 0 )
- {
- xen_set_ldt((unsigned long)&default_ldt[0], 5);
- return;
- }
- }
-
- if (!(regs->xcs & 2))
- goto gp_in_kernel;
-
- current->thread.error_code = error_code;
- current->thread.trap_no = 13;
- force_sig(SIGSEGV, current);
- return;
-
-gp_in_kernel:
- {
- unsigned long fixup;
- fixup = search_exception_table(regs->eip);
- if (fixup) {
- regs->eip = fixup;
- return;
- }
- die("general protection fault", regs, error_code);
- }
-}
-
-
-asmlinkage void do_debug(struct pt_regs * regs, long error_code)
-{
- unsigned int condition;
- struct task_struct *tsk = current;
- siginfo_t info;
-
- condition = HYPERVISOR_get_debugreg(6);
-
- /* Mask out spurious debug traps due to lazy DR7 setting */
- if (condition & (DR_TRAP0|DR_TRAP1|DR_TRAP2|DR_TRAP3)) {
- if (!tsk->thread.debugreg[7])
- goto clear_dr7;
- }
-
- /* Save debug status register where ptrace can see it */
- tsk->thread.debugreg[6] = condition;
-
- /* Mask out spurious TF errors due to lazy TF clearing */
- if (condition & DR_STEP) {
- /*
- * The TF error should be masked out only if the current
- * process is not traced and if the TRAP flag has been set
- * previously by a tracing process (condition detected by
- * the PT_DTRACE flag); remember that the i386 TRAP flag
- * can be modified by the process itself in user mode,
- * allowing programs to debug themselves without the ptrace()
- * interface.
- */
- if ((tsk->ptrace & (PT_DTRACE|PT_PTRACED)) == PT_DTRACE)
- goto clear_TF;
- }
-
- /* Ok, finally something we can handle */
- tsk->thread.trap_no = 1;
- tsk->thread.error_code = error_code;
- info.si_signo = SIGTRAP;
- info.si_errno = 0;
- info.si_code = TRAP_BRKPT;
-
- /* If this is a kernel mode trap, save the user PC on entry to
- * the kernel, that's what the debugger can make sense of.
- */
- info.si_addr = ((regs->xcs & 2) == 0) ? (void *)tsk->thread.eip :
- (void *)regs->eip;
- force_sig_info(SIGTRAP, &info, tsk);
-
- /* Disable additional traps. They'll be re-enabled when
- * the signal is delivered.
- */
- clear_dr7:
- HYPERVISOR_set_debugreg(7, 0);
- return;
-
- clear_TF:
- regs->eflags &= ~TF_MASK;
- return;
-}
-
-
-/*
- * Note that we play around with the 'TS' bit in an attempt to get
- * the correct behaviour even in the presence of the asynchronous
- * IRQ13 behaviour
- */
-void math_error(void *eip)
-{
- struct task_struct * task;
- siginfo_t info;
- unsigned short cwd, swd;
-
- /*
- * Save the info for the exception handler and clear the error.
- */
- task = current;
- save_init_fpu(task);
- task->thread.trap_no = 16;
- task->thread.error_code = 0;
- info.si_signo = SIGFPE;
- info.si_errno = 0;
- info.si_code = __SI_FAULT;
- info.si_addr = eip;
- /*
- * (~cwd & swd) will mask out exceptions that are not set to unmasked
- * status. 0x3f is the exception bits in these regs, 0x200 is the
- * C1 reg you need in case of a stack fault, 0x040 is the stack
- * fault bit. We should only be taking one exception at a time,
- * so if this combination doesn't produce any single exception,
- * then we have a bad program that isn't syncronizing its FPU usage
- * and it will suffer the consequences since we won't be able to
- * fully reproduce the context of the exception
- */
- cwd = get_fpu_cwd(task);
- swd = get_fpu_swd(task);
- switch (((~cwd) & swd & 0x3f) | (swd & 0x240)) {
- case 0x000:
- default:
- break;
- case 0x001: /* Invalid Op */
- case 0x041: /* Stack Fault */
- case 0x241: /* Stack Fault | Direction */
- info.si_code = FPE_FLTINV;
- break;
- case 0x002: /* Denormalize */
- case 0x010: /* Underflow */
- info.si_code = FPE_FLTUND;
- break;
- case 0x004: /* Zero Divide */
- info.si_code = FPE_FLTDIV;
- break;
- case 0x008: /* Overflow */
- info.si_code = FPE_FLTOVF;
- break;
- case 0x020: /* Precision */
- info.si_code = FPE_FLTRES;
- break;
- }
- force_sig_info(SIGFPE, &info, task);
-}
-
-asmlinkage void do_coprocessor_error(struct pt_regs * regs, long error_code)
-{
- ignore_irq13 = 1;
- math_error((void *)regs->eip);
-}
-
-void simd_math_error(void *eip)
-{
- struct task_struct * task;
- siginfo_t info;
- unsigned short mxcsr;
-
- /*
- * Save the info for the exception handler and clear the error.
- */
- task = current;
- save_init_fpu(task);
- task->thread.trap_no = 19;
- task->thread.error_code = 0;
- info.si_signo = SIGFPE;
- info.si_errno = 0;
- info.si_code = __SI_FAULT;
- info.si_addr = eip;
- /*
- * The SIMD FPU exceptions are handled a little differently, as there
- * is only a single status/control register. Thus, to determine which
- * unmasked exception was caught we must mask the exception mask bits
- * at 0x1f80, and then use these to mask the exception bits at 0x3f.
- */
- mxcsr = get_fpu_mxcsr(task);
- switch (~((mxcsr & 0x1f80) >> 7) & (mxcsr & 0x3f)) {
- case 0x000:
- default:
- break;
- case 0x001: /* Invalid Op */
- info.si_code = FPE_FLTINV;
- break;
- case 0x002: /* Denormalize */
- case 0x010: /* Underflow */
- info.si_code = FPE_FLTUND;
- break;
- case 0x004: /* Zero Divide */
- info.si_code = FPE_FLTDIV;
- break;
- case 0x008: /* Overflow */
- info.si_code = FPE_FLTOVF;
- break;
- case 0x020: /* Precision */
- info.si_code = FPE_FLTRES;
- break;
- }
- force_sig_info(SIGFPE, &info, task);
-}
-
-asmlinkage void do_simd_coprocessor_error(struct pt_regs * regs,
- long error_code)
-{
- if (cpu_has_xmm) {
- /* Handle SIMD FPU exceptions on PIII+ processors. */
- ignore_irq13 = 1;
- simd_math_error((void *)regs->eip);
- } else {
- die_if_kernel("cache flush denied", regs, error_code);
- current->thread.trap_no = 19;
- current->thread.error_code = error_code;
- force_sig(SIGSEGV, current);
- }
-}
-
-/*
- * 'math_state_restore()' saves the current math information in the
- * old math state array, and gets the new ones from the current task
- *
- * Careful.. There are problems with IBM-designed IRQ13 behaviour.
- * Don't touch unless you *really* know how it works.
- */
-asmlinkage void math_state_restore(struct pt_regs regs)
-{
- /*
- * A trap in kernel mode can be ignored. It'll be the fast XOR or
- * copying libraries, which will correctly save/restore state and
- * reset the TS bit in CR0.
- */
- if ( (regs.xcs & 2) == 0 )
- return;
-
- if (current->used_math) {
- restore_fpu(current);
- } else {
- init_fpu();
- }
- current->flags |= PF_USEDFPU; /* So we fnsave on switch_to() */
-}
-
-
-#define _set_gate(gate_addr,type,dpl,addr) \
-do { \
- int __d0, __d1; \
- __asm__ __volatile__ ("movw %%dx,%%ax\n\t" \
- "movw %4,%%dx\n\t" \
- "movl %%eax,%0\n\t" \
- "movl %%edx,%1" \
- :"=m" (*((long *) (gate_addr))), \
- "=m" (*(1+(long *) (gate_addr))), "=&a" (__d0), "=&d" (__d1) \
- :"i" ((short) (0x8000+(dpl<<13)+(type<<8))), \
- "3" ((char *) (addr)),"2" (__KERNEL_CS << 16)); \
-} while (0)
-
-static void __init set_call_gate(void *a, void *addr)
-{
- _set_gate(a,12,3,addr);
-}
-
-
-/* NB. All these are "trap gates" (i.e. events_mask isn't cleared). */
-static trap_info_t trap_table[] = {
- { 0, 0, __KERNEL_CS, (unsigned long)divide_error },
- { 1, 0, __KERNEL_CS, (unsigned long)debug },
- { 3, 3, __KERNEL_CS, (unsigned long)int3 },
- { 4, 3, __KERNEL_CS, (unsigned long)overflow },
- { 5, 3, __KERNEL_CS, (unsigned long)bounds },
- { 6, 0, __KERNEL_CS, (unsigned long)invalid_op },
- { 7, 0, __KERNEL_CS, (unsigned long)device_not_available },
- { 8, 0, __KERNEL_CS, (unsigned long)double_fault },
- { 9, 0, __KERNEL_CS, (unsigned long)coprocessor_segment_overrun },
- { 10, 0, __KERNEL_CS, (unsigned long)invalid_TSS },
- { 11, 0, __KERNEL_CS, (unsigned long)segment_not_present },
- { 12, 0, __KERNEL_CS, (unsigned long)stack_segment },
- { 13, 0, __KERNEL_CS, (unsigned long)general_protection },
- { 14, 0, __KERNEL_CS, (unsigned long)page_fault },
- { 15, 0, __KERNEL_CS, (unsigned long)fixup_4gb_segment },
- { 16, 0, __KERNEL_CS, (unsigned long)coprocessor_error },
- { 17, 0, __KERNEL_CS, (unsigned long)alignment_check },
- { 18, 0, __KERNEL_CS, (unsigned long)machine_check },
- { 19, 0, __KERNEL_CS, (unsigned long)simd_coprocessor_error },
- { SYSCALL_VECTOR,
- 3, __KERNEL_CS, (unsigned long)system_call },
- { 0, 0, 0, 0 }
-};
-
-
-void __init trap_init(void)
-{
- HYPERVISOR_set_trap_table(trap_table);
-
- /*
- * The default LDT is a single-entry callgate to lcall7 for iBCS and a
- * callgate to lcall27 for Solaris/x86 binaries.
- */
- clear_page(&default_ldt[0]);
- set_call_gate(&default_ldt[0],lcall7);
- set_call_gate(&default_ldt[4],lcall27);
- __make_page_readonly(&default_ldt[0]);
-
- cpu_init();
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/lib/Makefile
--- a/linux-2.4.30-xen-sparse/arch/xen/lib/Makefile Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,15 +0,0 @@
-
-.S.o:
- $(CC) $(AFLAGS) -c $< -o $*.o
-
-L_TARGET = lib.a
-
-obj-y = checksum.o old-checksum.o delay.o \
- usercopy.o getuser.o \
- memcpy.o strstr.o xen_proc.o
-
-obj-$(CONFIG_X86_USE_3DNOW) += mmx.o
-obj-$(CONFIG_HAVE_DEC_LOCK) += dec_and_lock.o
-obj-$(CONFIG_DEBUG_IOVIRT) += iodebug.o
-
-include $(TOPDIR)/Rules.make
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/lib/delay.c
--- a/linux-2.4.30-xen-sparse/arch/xen/lib/delay.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,52 +0,0 @@
-/*
- * Precise Delay Loops for i386
- *
- * Copyright (C) 1993 Linus Torvalds
- * Copyright (C) 1997 Martin Mares <mj@xxxxxxxxxxxxxxxxxxxxxxxx>
- *
- * The __delay function must _NOT_ be inlined as its execution time
- * depends wildly on alignment on many x86 processors. The additional
- * jump magic is needed to get the timing stable on all the CPU's
- * we have to worry about.
- */
-
-#include <linux/config.h>
-#include <linux/sched.h>
-#include <linux/delay.h>
-#include <asm/processor.h>
-#include <asm/delay.h>
-
-#ifdef CONFIG_SMP
-#include <asm/smp.h>
-#endif
-
-void __delay(unsigned long loops)
-{
- unsigned long bclock, now;
-
- rdtscl(bclock);
- do
- {
- rep_nop();
- rdtscl(now);
- } while ((now-bclock) < loops);
-}
-
-inline void __const_udelay(unsigned long xloops)
-{
- int d0;
- __asm__("mull %0"
- :"=d" (xloops), "=&a" (d0)
- :"1" (xloops),"0" (current_cpu_data.loops_per_jiffy));
- __delay(xloops * HZ);
-}
-
-void __udelay(unsigned long usecs)
-{
- __const_udelay(usecs * 0x000010c6); /* 2**32 / 1000000 */
-}
-
-void __ndelay(unsigned long nsecs)
-{
- __const_udelay(nsecs * 0x00005); /* 2**32 / 1000000000 (rounded up) */
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/mm/Makefile
--- a/linux-2.4.30-xen-sparse/arch/xen/mm/Makefile Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,16 +0,0 @@
-#
-# Makefile for the linux i386-specific parts of the memory manager.
-#
-# Note! Dependencies are done automagically by 'make dep', which also
-# removes any old dependencies. DON'T put your own dependencies here
-# unless it's something special (ie not a .c file).
-#
-# Note 2! The CFLAGS definition is now in the main makefile...
-
-O_TARGET := mm.o
-
-obj-y := init.o fault.o extable.o pageattr.o hypervisor.o ioremap.o
-
-export-objs := pageattr.o
-
-include $(TOPDIR)/Rules.make
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.4.30-xen-sparse/arch/xen/mm/fault.c
--- a/linux-2.4.30-xen-sparse/arch/xen/mm/fault.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,302 +0,0 @@
-/*
- * linux/arch/i386/mm/fault.c
- *
- * Copyright (C) 1995 Linus Torvalds
- */
-
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/ptrace.h>
-#include <linux/mman.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/smp_lock.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/tty.h>
-#include <linux/vt_kern.h> /* For unblank_screen() */
-
-#include <asm/system.h>
-#include <asm/uaccess.h>
-#include <asm/pgalloc.h>
-#include <asm/hardirq.h>
-
-extern void die(const char *,struct pt_regs *,long);
-
-pgd_t *cur_pgd;
-
-extern spinlock_t timerlist_lock;
-
-/*
- * Unlock any spinlocks which will prevent us from getting the
- * message out (timerlist_lock is acquired through the
- * console unblank code)
- */
-void bust_spinlocks(int yes)
-{
- spin_lock_init(&timerlist_lock);
- if (yes) {
- oops_in_progress = 1;
- } else {
- int loglevel_save = console_loglevel;
-#ifdef CONFIG_VT
- unblank_screen();
-#endif
- oops_in_progress = 0;
- /*
- * OK, the message is on the console. Now we call printk()
- * without oops_in_progress set so that printk will give klogd
- * a poke. Hold onto your hats...
- */
- console_loglevel = 15; /* NMI oopser may have shut the
console up */
- printk(" ");
- console_loglevel = loglevel_save;
- }
-}
-
-/*
- * This routine handles page faults. It determines the address,
- * and the problem, and then passes it off to one of the appropriate
- * routines.
- *
- * error_code:
- * bit 0 == 0 means no page found, 1 means protection fault
- * bit 1 == 0 means read, 1 means write
- * bit 2 == 0 means kernel, 1 means user-mode
- */
-asmlinkage void do_page_fault(struct pt_regs *regs,
- unsigned long error_code,
- unsigned long address)
-{
- struct task_struct *tsk = current;
- struct mm_struct *mm;
- struct vm_area_struct * vma;
- unsigned long page;
- unsigned long fixup;
- int write;
- siginfo_t info;
-
- /* Set the "privileged fault" bit to something sane. */
- error_code &= 3;
- error_code |= (regs->xcs & 2) << 1;
-
- /*
- * We fault-in kernel-space virtual memory on-demand. The
- * 'reference' page table is init_mm.pgd.
- *
- * NOTE! We MUST NOT take any locks for this case. We may
- * be in an interrupt or a critical region, and should
- * only copy the information from the master page table,
- * nothing more.
- *
- * This verifies that the fault happens in kernel space
- * (error_code & 4) == 0, and that the fault was not a
- * protection error (error_code & 1) == 0.
- */
- if (address >= TASK_SIZE && !(error_code & 5))
- goto vmalloc_fault;
-
- mm = tsk->mm;
- info.si_code = SEGV_MAPERR;
-
- /*
- * If we're in an interrupt or have no user
- * context, we must not take the fault..
- */
- if (in_interrupt() || !mm)
- goto no_context;
-
- down_read(&mm->mmap_sem);
-
- vma = find_vma(mm, address);
- if (!vma)
- goto bad_area;
- if (vma->vm_start <= address)
- goto good_area;
- if (!(vma->vm_flags & VM_GROWSDOWN))
- goto bad_area;
- if (error_code & 4) {
- /*
- * accessing the stack below %esp is always a bug.
- * The "+ 32" is there due to some instructions (like
- * pusha) doing post-decrement on the stack and that
- * doesn't show up until later..
- */
- if (address + 32 < regs->esp)
- goto bad_area;
- }
- if (expand_stack(vma, address))
- goto bad_area;
-/*
- * Ok, we have a good vm_area for this memory access, so
- * we can handle it..
- */
-good_area:
- info.si_code = SEGV_ACCERR;
- write = 0;
- switch (error_code & 3) {
- default: /* 3: write, present */
- /* fall through */
- case 2: /* write, not present */
- if (!(vma->vm_flags & VM_WRITE))
- goto bad_area;
- write++;
- break;
- case 1: /* read, present */
- goto bad_area;
- case 0: /* read, not present */
- if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
- goto bad_area;
- }
-
- survive:
- /*
- * If for any reason at all we couldn't handle the fault,
- * make sure we exit gracefully rather than endlessly redo
- * the fault.
- */
- switch (handle_mm_fault(mm, vma, address, write)) {
- case 1:
- tsk->min_flt++;
- break;
- case 2:
- tsk->maj_flt++;
- break;
- case 0:
- goto do_sigbus;
- default:
- goto out_of_memory;
- }
-
- up_read(&mm->mmap_sem);
- return;
-
-/*
- * Something tried to access memory that isn't in our memory map..
- * Fix it, but check if it's kernel or user first..
- */
-bad_area:
- up_read(&mm->mmap_sem);
-
- /* User mode accesses just cause a SIGSEGV */
- if (error_code & 4) {
- tsk->thread.cr2 = address;
- /* Kernel addresses are always protection faults */
- tsk->thread.error_code = error_code | (address >= TASK_SIZE);
- tsk->thread.trap_no = 14;
- info.si_signo = SIGSEGV;
- info.si_errno = 0;
- /* info.si_code has been set above */
- info.si_addr = (void *)address;
- force_sig_info(SIGSEGV, &info, tsk);
- return;
- }
-
-no_context:
- /* Are we prepared to handle this kernel fault? */
- if ((fixup = search_exception_table(regs->eip)) != 0) {
- regs->eip = fixup;
- return;
- }
-
-/*
- * Oops. The kernel tried to access some bad page. We'll have to
- * terminate things with extreme prejudice.
- */
-
- bust_spinlocks(1);
-
- if (address < PAGE_SIZE)
- printk(KERN_ALERT "Unable to handle kernel NULL pointer
dereference");
- else
- printk(KERN_ALERT "Unable to handle kernel paging request");
- printk(" at virtual address %08lx\n",address);
- printk(" printing eip:\n");
- printk("%08lx\n", regs->eip);
- page = ((unsigned long *) cur_pgd)[address >> 22];
- printk(KERN_ALERT "*pde=%08lx(%08lx)\n", page, machine_to_phys(page));
- if (page & 1) {
- page &= PAGE_MASK;
- address &= 0x003ff000;
- page = machine_to_phys(page);
- page = ((unsigned long *) __va(page))[address >> PAGE_SHIFT];
- printk(KERN_ALERT "*pte=%08lx(%08lx)\n", page,
- machine_to_phys(page));
- }
- die("Oops", regs, error_code);
- bust_spinlocks(0);
- do_exit(SIGKILL);
-
-/*
- * We ran out of memory, or some other thing happened to us that made
- * us unable to handle the page fault gracefully.
- */
-out_of_memory:
- if (tsk->pid == 1) {
- yield();
- goto survive;
- }
- up_read(&mm->mmap_sem);
- printk("VM: killing process %s\n", tsk->comm);
- if (error_code & 4)
- do_exit(SIGKILL);
- goto no_context;
-
-do_sigbus:
- up_read(&mm->mmap_sem);
-
- /*
- * Send a sigbus, regardless of whether we were in kernel
- * or user mode.
- */
- tsk->thread.cr2 = address;
- tsk->thread.error_code = error_code;
- tsk->thread.trap_no = 14;
- info.si_signo = SIGBUS;
- info.si_errno = 0;
- info.si_code = BUS_ADRERR;
- info.si_addr = (void *)address;
- force_sig_info(SIGBUS, &info, tsk);
-
- /* Kernel mode? Handle exceptions or die */
- if (!(error_code & 4))
- goto no_context;
- return;
-
-vmalloc_fault:
- {
- /*
- * Synchronize this task's top level page-table
- * with the 'reference' page table.
- *
- * Do _not_ use "tsk" here. We might be inside
- * an interrupt in the middle of a task switch..
- */
- int offset = __pgd_offset(address);
- pgd_t *pgd, *pgd_k;
- pmd_t *pmd, *pmd_k;
- pte_t *pte_k;
-
- pgd = offset + cur_pgd;
- pgd_k = init_mm.pgd + offset;
-
- if (!pgd_present(*pgd_k))
- goto no_context;
- set_pgd(pgd, *pgd_k);
-
- pmd = pmd_offset(pgd, address);
- pmd_k = pmd_offset(pgd_k, address);
- if (!pmd_present(*pmd_k))
- goto no_context;
- set_pmd(pmd, *pmd_k);
-
- pte_k = pte_offset(pmd_k, address);
- if (!pte_present(*pte_k))
- goto no_context;
- return;
- }
-}
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.4.30-xen-sparse/arch/xen/mm/init.c
--- a/linux-2.4.30-xen-sparse/arch/xen/mm/init.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,482 +0,0 @@
-/*
- * linux/arch/i386/mm/init.c
- *
- * Copyright (C) 1995 Linus Torvalds
- *
- * Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999
- */
-
-#include <linux/config.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/ptrace.h>
-#include <linux/mman.h>
-#include <linux/mm.h>
-#include <linux/swap.h>
-#include <linux/smp.h>
-#include <linux/init.h>
-#ifdef CONFIG_BLK_DEV_INITRD
-#include <linux/blk.h>
-#endif
-#include <linux/highmem.h>
-#include <linux/pagemap.h>
-#include <linux/bootmem.h>
-#include <linux/slab.h>
-
-#include <asm/processor.h>
-#include <asm/system.h>
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-#include <asm/pgalloc.h>
-#include <asm/dma.h>
-#include <asm/apic.h>
-#include <asm/tlb.h>
-
-/* XEN: We *cannot* use mmx_clear_page() this early. Force dumb memset(). */
-#undef clear_page
-#define clear_page(page) memset((void *)(page), 0, PAGE_SIZE)
-
-mmu_gather_t mmu_gathers[NR_CPUS];
-unsigned long highstart_pfn, highend_pfn;
-static unsigned long totalram_pages;
-static unsigned long totalhigh_pages;
-
-int do_check_pgt_cache(int low, int high)
-{
- int freed = 0;
- if(pgtable_cache_size > high) {
- do {
- if (!QUICKLIST_EMPTY(pgd_quicklist)) {
- free_pgd_slow(get_pgd_fast());
- freed++;
- }
- if (!QUICKLIST_EMPTY(pte_quicklist)) {
- pte_free_slow(pte_alloc_one_fast(NULL, 0));
- freed++;
- }
- } while(pgtable_cache_size > low);
- }
- return freed;
-}
-
-/*
- * NOTE: pagetable_init alloc all the fixmap pagetables contiguous on the
- * physical space so we can cache the place of the first one and move
- * around without checking the pgd every time.
- */
-
-#if CONFIG_HIGHMEM
-pte_t *kmap_pte;
-pgprot_t kmap_prot;
-
-#define kmap_get_fixmap_pte(vaddr) \
- pte_offset(pmd_offset(pgd_offset_k(vaddr), (vaddr)), (vaddr))
-
-void __init kmap_init(void)
-{
- unsigned long kmap_vstart;
-
- /* cache the first kmap pte */
- kmap_vstart = __fix_to_virt(FIX_KMAP_BEGIN);
- kmap_pte = kmap_get_fixmap_pte(kmap_vstart);
-
- kmap_prot = PAGE_KERNEL;
-}
-#endif /* CONFIG_HIGHMEM */
-
-void show_mem(void)
-{
- int i, total = 0, reserved = 0;
- int shared = 0, cached = 0;
- int highmem = 0;
-
- printk("Mem-info:\n");
- show_free_areas();
- printk("Free swap: %6dkB\n",nr_swap_pages<<(PAGE_SHIFT-10));
- i = max_mapnr;
- while (i-- > 0) {
- total++;
- if (PageHighMem(mem_map+i))
- highmem++;
- if (PageReserved(mem_map+i))
- reserved++;
- else if (PageSwapCache(mem_map+i))
- cached++;
- else if (page_count(mem_map+i))
- shared += page_count(mem_map+i) - 1;
- }
- printk("%d pages of RAM\n", total);
- printk("%d pages of HIGHMEM\n",highmem);
- printk("%d reserved pages\n",reserved);
- printk("%d pages shared\n",shared);
- printk("%d pages swap cached\n",cached);
- printk("%ld pages in page table cache\n",pgtable_cache_size);
- show_buffers();
-}
-
-/* References to section boundaries */
-
-extern char _text, _etext, _edata, __bss_start, _end;
-extern char __init_begin, __init_end;
-
-static inline void set_pte_phys (unsigned long vaddr,
- unsigned long phys, pgprot_t prot)
-{
- pgd_t *pgd;
- pmd_t *pmd;
- pte_t *pte;
-
- pgd = init_mm.pgd + __pgd_offset(vaddr);
- if (pgd_none(*pgd)) {
- printk("PAE BUG #00!\n");
- return;
- }
- pmd = pmd_offset(pgd, vaddr);
- if (pmd_none(*pmd)) {
- printk("PAE BUG #01!\n");
- return;
- }
- pte = pte_offset(pmd, vaddr);
-
- set_pte(pte, (pte_t) { phys | pgprot_val(prot) });
-
- /*
- * It's enough to flush this one mapping.
- * (PGE mappings get flushed as well)
- */
- __flush_tlb_one(vaddr);
-}
-
-void __set_fixmap(enum fixed_addresses idx, unsigned long phys,
- pgprot_t flags)
-{
- unsigned long address = __fix_to_virt(idx);
-
- if (idx >= __end_of_fixed_addresses) {
- printk("Invalid __set_fixmap\n");
- return;
- }
- set_pte_phys(address, phys, flags);
-}
-
-void clear_fixmap(enum fixed_addresses idx)
-{
- set_pte_phys(__fix_to_virt(idx), 0, __pgprot(0));
-}
-
-static void __init fixrange_init (unsigned long start,
- unsigned long end, pgd_t *pgd_base)
-{
- pgd_t *pgd, *kpgd;
- pmd_t *pmd, *kpmd;
- pte_t *pte, *kpte;
- int i, j;
- unsigned long vaddr;
-
- vaddr = start;
- i = __pgd_offset(vaddr);
- j = __pmd_offset(vaddr);
- pgd = pgd_base + i;
-
- for ( ; (i < PTRS_PER_PGD) && (vaddr != end); pgd++, i++) {
-#if CONFIG_X86_PAE
- if (pgd_none(*pgd)) {
- pmd = (pmd_t *) alloc_bootmem_low_pages(PAGE_SIZE);
- set_pgd(pgd, __pgd(__pa(pmd) + 0x1));
- if (pmd != pmd_offset(pgd, 0))
- printk("PAE BUG #02!\n");
- }
- pmd = pmd_offset(pgd, vaddr);
-#else
- pmd = (pmd_t *)pgd;
-#endif
- for (; (j < PTRS_PER_PMD) && (vaddr != end); pmd++, j++) {
- if (pmd_none(*pmd)) {
- pte = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE);
- clear_page(pte);
- kpgd = pgd_offset_k((unsigned long)pte);
- kpmd = pmd_offset(kpgd, (unsigned long)pte);
- kpte = pte_offset(kpmd, (unsigned long)pte);
- set_pte(kpte, pte_wrprotect(*kpte));
- set_pmd(pmd, __pmd(_KERNPG_TABLE + __pa(pte)));
- }
- vaddr += PMD_SIZE;
- }
- j = 0;
- }
-}
-
-
-static void __init pagetable_init (void)
-{
- unsigned long vaddr, end, ram_end;
- pgd_t *kpgd, *pgd, *pgd_base;
- int i, j, k;
- pmd_t *kpmd, *pmd;
- pte_t *kpte, *pte, *pte_base;
-
- ram_end = end = (unsigned long)__va(max_low_pfn * PAGE_SIZE);
- if ( xen_start_info.nr_pages < max_low_pfn )
- ram_end = (unsigned long)__va(xen_start_info.nr_pages * PAGE_SIZE);
-
- pgd_base = init_mm.pgd;
- i = __pgd_offset(PAGE_OFFSET);
- pgd = pgd_base + i;
-
- for (; i < PTRS_PER_PGD; pgd++, i++) {
- vaddr = i*PGDIR_SIZE;
- if (vaddr >= end)
- break;
- pmd = (pmd_t *)pgd;
- for (j = 0; j < PTRS_PER_PMD; pmd++, j++) {
- vaddr = i*PGDIR_SIZE + j*PMD_SIZE;
- if (vaddr >= end)
- break;
-
- /* Filled in for us already? */
- if ( pmd_val(*pmd) & _PAGE_PRESENT )
- continue;
-
- pte_base = pte = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE);
- clear_page(pte_base);
-
- for (k = 0; k < PTRS_PER_PTE; pte++, k++) {
- vaddr = i*PGDIR_SIZE + j*PMD_SIZE + k*PAGE_SIZE;
- if (vaddr >= ram_end)
- break;
- *pte = mk_pte_phys(__pa(vaddr), PAGE_KERNEL);
- }
- kpgd = pgd_offset_k((unsigned long)pte_base);
- kpmd = pmd_offset(kpgd, (unsigned long)pte_base);
- kpte = pte_offset(kpmd, (unsigned long)pte_base);
- set_pte(kpte, pte_wrprotect(*kpte));
- set_pmd(pmd, __pmd(_KERNPG_TABLE + __pa(pte_base)));
- }
- }
-
- /*
- * Fixed mappings, only the page table structure has to be
- * created - mappings will be set by set_fixmap():
- */
- vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK;
- fixrange_init(vaddr, HYPERVISOR_VIRT_START, init_mm.pgd);
-
-#if CONFIG_HIGHMEM
- /*
- * Permanent kmaps:
- */
- vaddr = PKMAP_BASE;
- fixrange_init(vaddr, vaddr + PAGE_SIZE*LAST_PKMAP, init_mm.pgd);
-
- pgd = init_mm.pgd + __pgd_offset(vaddr);
- pmd = pmd_offset(pgd, vaddr);
- pte = pte_offset(pmd, vaddr);
- pkmap_page_table = pte;
-#endif
-}
-
-static void __init zone_sizes_init(void)
-{
- unsigned long zones_size[MAX_NR_ZONES] = {0, 0, 0};
- unsigned int max_dma, high, low;
-
- max_dma = virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT;
- low = max_low_pfn;
- high = highend_pfn;
-
- if (low < max_dma)
- zones_size[ZONE_DMA] = low;
- else {
- zones_size[ZONE_DMA] = max_dma;
- zones_size[ZONE_NORMAL] = low - max_dma;
-#ifdef CONFIG_HIGHMEM
- zones_size[ZONE_HIGHMEM] = high - low;
-#endif
- }
- free_area_init(zones_size);
-}
-
-void __init paging_init(void)
-{
- pagetable_init();
-
- zone_sizes_init();
-
- /* Switch to the real shared_info page, and clear the dummy page. */
- set_fixmap(FIX_SHARED_INFO, xen_start_info.shared_info);
- HYPERVISOR_shared_info = (shared_info_t *)fix_to_virt(FIX_SHARED_INFO);
- memset(empty_zero_page, 0, sizeof(empty_zero_page));
-
-#ifdef CONFIG_HIGHMEM
- kmap_init();
-#endif
-}
-
-static inline int page_is_ram (unsigned long pagenr)
-{
- return 1;
-}
-
-#ifdef CONFIG_HIGHMEM
-void __init one_highpage_init(struct page *page, int free_page)
-{
- ClearPageReserved(page);
- set_bit(PG_highmem, &page->flags);
- atomic_set(&page->count, 1);
- if ( free_page )
- __free_page(page);
- totalhigh_pages++;
-}
-#endif /* CONFIG_HIGHMEM */
-
-static void __init set_max_mapnr_init(void)
-{
-#ifdef CONFIG_HIGHMEM
- highmem_start_page = mem_map + highstart_pfn;
- max_mapnr = num_physpages = highend_pfn;
- num_mappedpages = max_low_pfn;
-#else
- max_mapnr = num_mappedpages = num_physpages = max_low_pfn;
-#endif
-}
-
-static int __init free_pages_init(void)
-{
-#ifdef CONFIG_HIGHMEM
- int bad_ppro = 0;
-#endif
- int reservedpages, pfn;
-
- /* add only boot_pfn pages of low memory to free list.
- * max_low_pfn may be sized for
- * pages yet to be allocated from the hypervisor, or it may be set
- * to override the xen_start_info amount of memory
- */
- int boot_pfn = min(xen_start_info.nr_pages,max_low_pfn);
-
- /* this will put all low memory onto the freelists */
- totalram_pages += free_all_bootmem();
- /* XEN: init and count low-mem pages outside initial allocation. */
- for (pfn = boot_pfn; pfn < max_low_pfn; pfn++) {
- ClearPageReserved(&mem_map[pfn]);
- atomic_set(&mem_map[pfn].count, 1);
- totalram_pages++;
- }
-
- reservedpages = 0;
- for (pfn = 0; pfn < boot_pfn ; pfn++) {
- /*
- * Only count reserved RAM pages
- */
- if (page_is_ram(pfn) && PageReserved(mem_map+pfn))
- reservedpages++;
- }
-#ifdef CONFIG_HIGHMEM
- for (pfn = highend_pfn-1; pfn >= highstart_pfn; pfn--)
- one_highpage_init((struct page *) (mem_map + pfn),
- (pfn < xen_start_info.nr_pages));
- totalram_pages += totalhigh_pages;
-#endif
- return reservedpages;
-}
-
-void __init mem_init(void)
-{
- int codesize, reservedpages, datasize, initsize;
-
- if (!mem_map)
- BUG();
-
-#ifdef CONFIG_HIGHMEM
- /* check that fixmap and pkmap do not overlap */
- if (PKMAP_BASE+LAST_PKMAP*PAGE_SIZE >= FIXADDR_START) {
- printk(KERN_ERR "fixmap and kmap areas overlap - this will crash\n");
- printk(KERN_ERR "pkstart: %lxh pkend: %lxh fixstart %lxh\n",
- PKMAP_BASE, PKMAP_BASE+LAST_PKMAP*PAGE_SIZE, FIXADDR_START);
- BUG();
- }
-#endif
-
- set_max_mapnr_init();
-
- high_memory = (void *) __va(max_low_pfn * PAGE_SIZE);
-
- /* clear the zero-page */
- memset(empty_zero_page, 0, PAGE_SIZE);
-
- reservedpages = free_pages_init();
-
- codesize = (unsigned long) &_etext - (unsigned long) &_text;
- datasize = (unsigned long) &_edata - (unsigned long) &_etext;
- initsize = (unsigned long) &__init_end - (unsigned long) &__init_begin;
-
- printk(KERN_INFO "Memory: %luk/%luk available (%dk kernel code, %dk
reserved, %dk data, %dk init, %ldk highmem)\n",
- (unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
- max_mapnr << (PAGE_SHIFT-10),
- codesize >> 10,
- reservedpages << (PAGE_SHIFT-10),
- datasize >> 10,
- initsize >> 10,
- (unsigned long) (totalhigh_pages << (PAGE_SHIFT-10))
- );
-
- boot_cpu_data.wp_works_ok = 1;
-}
-
-void free_initmem(void)
-{
- unsigned long addr;
-
- addr = (unsigned long)(&__init_begin);
- for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) {
- ClearPageReserved(virt_to_page(addr));
- set_page_count(virt_to_page(addr), 1);
- free_page(addr);
- totalram_pages++;
- }
- printk (KERN_INFO "Freeing unused kernel memory: %dk freed\n",
(&__init_end - &__init_begin) >> 10);
-}
-
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
- if (start < end)
- printk (KERN_INFO "Freeing initrd memory: %ldk freed\n", (end - start)
>> 10);
- for (; start < end; start += PAGE_SIZE) {
- ClearPageReserved(virt_to_page(start));
- set_page_count(virt_to_page(start), 1);
- free_page(start);
- totalram_pages++;
- }
-}
-#endif
-
-void si_meminfo(struct sysinfo *val)
-{
- val->totalram = max_pfn;
- val->sharedram = 0;
- val->freeram = nr_free_pages();
- val->bufferram = atomic_read(&buffermem_pages);
- val->totalhigh = max_pfn-max_low_pfn;
- val->freehigh = nr_free_highpages();
- val->mem_unit = PAGE_SIZE;
- return;
-}
-
-#if defined(CONFIG_X86_PAE)
-struct kmem_cache_s *pae_pgd_cachep;
-void __init pgtable_cache_init(void)
-{
- /*
- * PAE pgds must be 16-byte aligned:
- */
- pae_pgd_cachep = kmem_cache_create("pae_pgd", 32, 0,
- SLAB_HWCACHE_ALIGN |
SLAB_MUST_HWCACHE_ALIGN, NULL, NULL);
- if (!pae_pgd_cachep)
- panic("init_pae(): Cannot alloc pae_pgd SLAB cache");
-}
-#endif /* CONFIG_X86_PAE */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/mm/ioremap.c
--- a/linux-2.4.30-xen-sparse/arch/xen/mm/ioremap.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,266 +0,0 @@
-/*
- * arch/xen/mm/ioremap.c
- *
- * Re-map IO memory to kernel address space so that we can access it.
- *
- * (C) Copyright 1995 1996 Linus Torvalds
- *
- * Modifications for Xenolinux (c) 2003-2004 Keir Fraser
- */
-
-#include <linux/slab.h>
-#include <linux/mm.h>
-#include <linux/mman.h>
-#include <linux/vmalloc.h>
-#include <asm/io.h>
-#include <asm/pgalloc.h>
-#include <asm/uaccess.h>
-#include <asm/tlb.h>
-#include <asm/mmu.h>
-
-#if defined(CONFIG_XEN_PRIVILEGED_GUEST)
-
-/* These hacky macros avoid phys->machine translations. */
-#define __direct_pte(x) ((pte_t) { (x) } )
-#define __direct_mk_pte(page_nr,pgprot) \
- __direct_pte(((page_nr) << PAGE_SHIFT) | pgprot_val(pgprot))
-#define direct_mk_pte_phys(physpage, pgprot) \
- __direct_mk_pte((physpage) >> PAGE_SHIFT, pgprot)
-
-static inline void direct_remap_area_pte(pte_t *pte,
- unsigned long address,
- unsigned long size,
- mmu_update_t **v)
-{
- unsigned long end;
-
- address &= ~PMD_MASK;
- end = address + size;
- if (end > PMD_SIZE)
- end = PMD_SIZE;
- if (address >= end)
- BUG();
-
- do {
- (*v)->ptr = virt_to_machine(pte);
- (*v)++;
- address += PAGE_SIZE;
- pte++;
- } while (address && (address < end));
-}
-
-static inline int direct_remap_area_pmd(struct mm_struct *mm,
- pmd_t *pmd,
- unsigned long address,
- unsigned long size,
- mmu_update_t **v)
-{
- unsigned long end;
-
- address &= ~PGDIR_MASK;
- end = address + size;
- if (end > PGDIR_SIZE)
- end = PGDIR_SIZE;
- if (address >= end)
- BUG();
- do {
- pte_t *pte = pte_alloc(mm, pmd, address);
- if (!pte)
- return -ENOMEM;
- direct_remap_area_pte(pte, address, end - address, v);
-
- address = (address + PMD_SIZE) & PMD_MASK;
- pmd++;
- } while (address && (address < end));
- return 0;
-}
-
-int __direct_remap_area_pages(struct mm_struct *mm,
- unsigned long address,
- unsigned long size,
- mmu_update_t *v)
-{
- pgd_t * dir;
- unsigned long end = address + size;
-
- dir = pgd_offset(mm, address);
- flush_cache_all();
- if (address >= end)
- BUG();
- spin_lock(&mm->page_table_lock);
- do {
- pmd_t *pmd = pmd_alloc(mm, dir, address);
- if (!pmd)
- return -ENOMEM;
- direct_remap_area_pmd(mm, pmd, address, end - address, &v);
- address = (address + PGDIR_SIZE) & PGDIR_MASK;
- dir++;
-
- } while (address && (address < end));
- spin_unlock(&mm->page_table_lock);
- flush_tlb_all();
- return 0;
-}
-
-
-int direct_remap_area_pages(struct mm_struct *mm,
- unsigned long address,
- unsigned long machine_addr,
- unsigned long size,
- pgprot_t prot,
- domid_t domid)
-{
- int i;
- unsigned long start_address;
-#define MAX_DIRECTMAP_MMU_QUEUE 130
- mmu_update_t u[MAX_DIRECTMAP_MMU_QUEUE], *v = u;
-
- start_address = address;
-
- for( i = 0; i < size; i += PAGE_SIZE )
- {
- if ( (v - u) == MAX_DIRECTMAP_MMU_QUEUE )
- {
- /* Fill in the PTE pointers. */
- __direct_remap_area_pages( mm,
- start_address,
- address-start_address,
- u);
-
- if ( HYPERVISOR_mmu_update(u, v - u, NULL, domid) < 0 )
- return -EFAULT;
- v = u;
- start_address = address;
- }
-
- /*
- * Fill in the machine address: PTE ptr is done later by
- * __direct_remap_area_pages().
- */
- v->val = (machine_addr & PAGE_MASK) | pgprot_val(prot);
-
- machine_addr += PAGE_SIZE;
- address += PAGE_SIZE;
- v++;
- }
-
- if ( v != u )
- {
- /* get the ptep's filled in */
- __direct_remap_area_pages(mm,
- start_address,
- address-start_address,
- u);
- if ( unlikely(HYPERVISOR_mmu_update(u, v - u, NULL, domid) < 0) )
- return -EFAULT;
- }
-
- return 0;
-}
-
-
-#endif /* CONFIG_XEN_PRIVILEGED_GUEST */
-
-
-/*
- * Remap an arbitrary machine address space into the kernel virtual
- * address space. Needed when a privileged instance of Xenolinux wants
- * to access space outside its world directly.
- *
- * NOTE! We need to allow non-page-aligned mappings too: we will obviously
- * have to convert them into an offset in a page-aligned mapping, but the
- * caller shouldn't need to know that small detail.
- */
-void * __ioremap(unsigned long machine_addr,
- unsigned long size,
- unsigned long flags)
-{
-#if defined(CONFIG_XEN_PRIVILEGED_GUEST)
- void * addr;
- struct vm_struct * area;
- unsigned long offset, last_addr;
- pgprot_t prot;
-
- /* Don't allow wraparound or zero size */
- last_addr = machine_addr + size - 1;
- if (!size || last_addr < machine_addr)
- return NULL;
-
- /* Mappings have to be page-aligned */
- offset = machine_addr & ~PAGE_MASK;
- machine_addr &= PAGE_MASK;
- size = PAGE_ALIGN(last_addr+1) - machine_addr;
-
- /* Ok, go for it */
- area = get_vm_area(size, VM_IOREMAP);
- if (!area)
- return NULL;
- addr = area->addr;
- prot = __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY |
- _PAGE_ACCESSED | flags);
- if (direct_remap_area_pages(&init_mm, VMALLOC_VMADDR(addr),
- machine_addr, size, prot, 0)) {
- vfree(addr);
- return NULL;
- }
- return (void *) (offset + (char *)addr);
-#else
- return NULL;
-#endif
-}
-
-void iounmap(void *addr)
-{
- vfree((void *)((unsigned long)addr & PAGE_MASK));
-}
-
-/* implementation of boot time ioremap for purpose of provising access
-to the vga console for privileged domains. Unlike boot time ioremap on
-other architectures, ours is permanent and not reclaimed when then vmalloc
-infrastructure is started */
-
-void __init *bt_ioremap(unsigned long machine_addr, unsigned long size)
-{
- unsigned long offset, last_addr;
- unsigned int nrpages;
- enum fixed_addresses idx;
-
- /* Don't allow wraparound or zero size */
- last_addr = machine_addr + size - 1;
- if (!size || last_addr < machine_addr)
- return NULL;
-
- /*
- * Mappings have to be page-aligned
- */
- offset = machine_addr & ~PAGE_MASK;
- machine_addr &= PAGE_MASK;
- size = PAGE_ALIGN(last_addr) - machine_addr;
-
- /*
- * Mappings have to fit in the FIX_BTMAP area.
- */
- nrpages = size >> PAGE_SHIFT;
- if (nrpages > NR_FIX_BTMAPS)
- return NULL;
-
- /*
- * Ok, go for it..
- */
- idx = FIX_BTMAP_BEGIN;
- while (nrpages > 0) {
- __set_fixmap(idx, machine_addr, PAGE_KERNEL);
- machine_addr += PAGE_SIZE;
- --idx;
- --nrpages;
- }
-
- flush_tlb_all();
-
- return (void*) (offset + fix_to_virt(FIX_BTMAP_BEGIN));
-}
-
-
-#if 0 /* We don't support these functions. They shouldn't be required. */
-void __init bt_iounmap(void *addr, unsigned long size) {}
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/arch/xen/vmlinux.lds
--- a/linux-2.4.30-xen-sparse/arch/xen/vmlinux.lds Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,75 +0,0 @@
-/* ld script to make i386 Linux kernel
- * Written by Martin Mares <mj@xxxxxxxxxxxxxxxxxxxxxxxx>;
- */
-OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
-OUTPUT_ARCH(i386)
-ENTRY(_start)
-SECTIONS
-{
- . = 0xC0000000 + 0x100000;
- _text = .; /* Text and read-only data */
- .text : {
- *(.text)
- *(.fixup)
- *(.gnu.warning)
- } = 0x9090
-
- _etext = .; /* End of text section */
-
- .rodata : { *(.rodata) *(.rodata.*) }
- .kstrtab : { *(.kstrtab) }
-
- . = ALIGN(16); /* Exception table */
- __start___ex_table = .;
- __ex_table : { *(__ex_table) }
- __stop___ex_table = .;
-
- __start___ksymtab = .; /* Kernel symbol table */
- __ksymtab : { *(__ksymtab) }
- __stop___ksymtab = .;
-
- .data : { /* Data */
- *(.data)
- CONSTRUCTORS
- }
-
- _edata = .; /* End of data section */
-
- . = ALIGN(8192); /* init_task */
- .data.init_task : { *(.data.init_task) }
-
- . = ALIGN(4096); /* Init code and data */
- __init_begin = .;
- .text.init : { *(.text.init) }
- .data.init : { *(.data.init) }
- . = ALIGN(16);
- __setup_start = .;
- .setup.init : { *(.setup.init) }
- __setup_end = .;
- __initcall_start = .;
- .initcall.init : { *(.initcall.init) }
- __initcall_end = .;
- . = ALIGN(4096);
- __init_end = .;
-
- . = ALIGN(4096);
- .data.page_aligned : { *(.data.idt) }
-
- . = ALIGN(32);
- .data.cacheline_aligned : { *(.data.cacheline_aligned) }
-
- __bss_start = .; /* BSS */
- .bss : {
- *(.bss)
- }
- _end = . ;
-
- /* Stabs debugging sections. */
- .stab 0 : { *(.stab) }
- .stabstr 0 : { *(.stabstr) }
- .stab.excl 0 : { *(.stab.excl) }
- .stab.exclstr 0 : { *(.stab.exclstr) }
- .stab.index 0 : { *(.stab.index) }
- .stab.indexstr 0 : { *(.stab.indexstr) }
- .comment 0 : { *(.comment) }
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/drivers/block/ll_rw_blk.c
--- a/linux-2.4.30-xen-sparse/drivers/block/ll_rw_blk.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,1663 +0,0 @@
-/*
- * linux/drivers/block/ll_rw_blk.c
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- * Copyright (C) 1994, Karl Keyte: Added support for disk statistics
- * Elevator latency, (C) 2000 Andrea Arcangeli <andrea@xxxxxxx> SuSE
- * Queue request tables / lock, selectable elevator, Jens Axboe <axboe@xxxxxxx>
- * kernel-doc documentation started by NeilBrown <neilb@xxxxxxxxxxxxxxx> -
July2000
- */
-
-/*
- * This handles all read/write requests to block devices
- */
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/kernel_stat.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/config.h>
-#include <linux/locks.h>
-#include <linux/mm.h>
-#include <linux/swap.h>
-#include <linux/init.h>
-#include <linux/smp_lock.h>
-#include <linux/completion.h>
-#include <linux/bootmem.h>
-
-#include <asm/system.h>
-#include <asm/io.h>
-#include <linux/blk.h>
-#include <linux/highmem.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-
-/*
- * MAC Floppy IWM hooks
- */
-
-#ifdef CONFIG_MAC_FLOPPY_IWM
-extern int mac_floppy_init(void);
-#endif
-
-/*
- * For the allocated request tables
- */
-static kmem_cache_t *request_cachep;
-
-/*
- * The "disk" task queue is used to start the actual requests
- * after a plug
- */
-DECLARE_TASK_QUEUE(tq_disk);
-
-/*
- * Protect the request list against multiple users..
- *
- * With this spinlock the Linux block IO subsystem is 100% SMP threaded
- * from the IRQ event side, and almost 100% SMP threaded from the syscall
- * side (we still have protect against block device array operations, and
- * the do_request() side is casually still unsafe. The kernel lock protects
- * this part currently.).
- *
- * there is a fair chance that things will work just OK if these functions
- * are called with no global kernel lock held ...
- */
-spinlock_t io_request_lock = SPIN_LOCK_UNLOCKED;
-
-/* This specifies how many sectors to read ahead on the disk. */
-
-int read_ahead[MAX_BLKDEV];
-
-/* blk_dev_struct is:
- * *request_fn
- * *current_request
- */
-struct blk_dev_struct blk_dev[MAX_BLKDEV]; /* initialized by blk_dev_init() */
-
-/*
- * blk_size contains the size of all block-devices in units of 1024 byte
- * sectors:
- *
- * blk_size[MAJOR][MINOR]
- *
- * if (!blk_size[MAJOR]) then no minor size checking is done.
- */
-int * blk_size[MAX_BLKDEV];
-
-/*
- * blksize_size contains the size of all block-devices:
- *
- * blksize_size[MAJOR][MINOR]
- *
- * if (!blksize_size[MAJOR]) then 1024 bytes is assumed.
- */
-int * blksize_size[MAX_BLKDEV];
-
-/*
- * hardsect_size contains the size of the hardware sector of a device.
- *
- * hardsect_size[MAJOR][MINOR]
- *
- * if (!hardsect_size[MAJOR])
- * then 512 bytes is assumed.
- * else
- * sector_size is hardsect_size[MAJOR][MINOR]
- * This is currently set by some scsi devices and read by the msdos fs driver.
- * Other uses may appear later.
- */
-int * hardsect_size[MAX_BLKDEV];
-
-/*
- * The following tunes the read-ahead algorithm in mm/filemap.c
- */
-int * max_readahead[MAX_BLKDEV];
-
-/*
- * Max number of sectors per request
- */
-int * max_sectors[MAX_BLKDEV];
-
-unsigned long blk_max_low_pfn, blk_max_pfn;
-int blk_nohighio = 0;
-
-int block_dump = 0;
-
-static struct timer_list writeback_timer;
-
-static inline int get_max_sectors(kdev_t dev)
-{
- if (!max_sectors[MAJOR(dev)])
- return MAX_SECTORS;
- return max_sectors[MAJOR(dev)][MINOR(dev)];
-}
-
-static inline request_queue_t *__blk_get_queue(kdev_t dev)
-{
- struct blk_dev_struct *bdev = blk_dev + MAJOR(dev);
-
- if (bdev->queue)
- return bdev->queue(dev);
- else
- return &blk_dev[MAJOR(dev)].request_queue;
-}
-
-request_queue_t *blk_get_queue(kdev_t dev)
-{
- return __blk_get_queue(dev);
-}
-
-static int __blk_cleanup_queue(struct request_list *list)
-{
- struct list_head *head = &list->free;
- struct request *rq;
- int i = 0;
-
- while (!list_empty(head)) {
- rq = list_entry(head->next, struct request, queue);
- list_del(&rq->queue);
- kmem_cache_free(request_cachep, rq);
- i++;
- };
-
- if (i != list->count)
- printk("request list leak!\n");
-
- list->count = 0;
- return i;
-}
-
-/**
- * blk_cleanup_queue: - release a &request_queue_t when it is no longer needed
- * @q: the request queue to be released
- *
- * Description:
- * blk_cleanup_queue is the pair to blk_init_queue(). It should
- * be called when a request queue is being released; typically
- * when a block device is being de-registered. Currently, its
- * primary task it to free all the &struct request structures that
- * were allocated to the queue.
- * Caveat:
- * Hopefully the low level driver will have finished any
- * outstanding requests first...
- **/
-void blk_cleanup_queue(request_queue_t * q)
-{
- int count = q->nr_requests;
-
- count -= __blk_cleanup_queue(&q->rq);
-
- if (count)
- printk("blk_cleanup_queue: leaked requests (%d)\n", count);
- if (atomic_read(&q->nr_sectors))
- printk("blk_cleanup_queue: leaked sectors (%d)\n",
atomic_read(&q->nr_sectors));
-
- memset(q, 0, sizeof(*q));
-}
-
-/**
- * blk_queue_headactive - indicate whether head of request queue may be active
- * @q: The queue which this applies to.
- * @active: A flag indication where the head of the queue is active.
- *
- * Description:
- * The driver for a block device may choose to leave the currently active
- * request on the request queue, removing it only when it has completed.
- * The queue handling routines assume this by default for safety reasons
- * and will not involve the head of the request queue in any merging or
- * reordering of requests when the queue is unplugged (and thus may be
- * working on this particular request).
- *
- * If a driver removes requests from the queue before processing them, then
- * it may indicate that it does so, there by allowing the head of the queue
- * to be involved in merging and reordering. This is done be calling
- * blk_queue_headactive() with an @active flag of %0.
- *
- * If a driver processes several requests at once, it must remove them (or
- * at least all but one of them) from the request queue.
- *
- * When a queue is plugged the head will be assumed to be inactive.
- **/
-
-void blk_queue_headactive(request_queue_t * q, int active)
-{
- q->head_active = active;
-}
-
-/**
- * blk_queue_throttle_sectors - indicates you will call sector throttling funcs
- * @q: The queue which this applies to.
- * @active: A flag indication if you want sector throttling on
- *
- * Description:
- * The sector throttling code allows us to put a limit on the number of
- * sectors pending io to the disk at a given time, sending @active nonzero
- * indicates you will call blk_started_sectors and blk_finished_sectors in
- * addition to calling blk_started_io and blk_finished_io in order to
- * keep track of the number of sectors in flight.
- **/
-
-void blk_queue_throttle_sectors(request_queue_t * q, int active)
-{
- q->can_throttle = active;
-}
-
-/**
- * blk_queue_make_request - define an alternate make_request function for a
device
- * @q: the request queue for the device to be affected
- * @mfn: the alternate make_request function
- *
- * Description:
- * The normal way for &struct buffer_heads to be passed to a device
- * driver is for them to be collected into requests on a request
- * queue, and then to allow the device driver to select requests
- * off that queue when it is ready. This works well for many block
- * devices. However some block devices (typically virtual devices
- * such as md or lvm) do not benefit from the processing on the
- * request queue, and are served best by having the requests passed
- * directly to them. This can be achieved by providing a function
- * to blk_queue_make_request().
- *
- * Caveat:
- * The driver that does this *must* be able to deal appropriately
- * with buffers in "highmemory", either by calling bh_kmap() to get
- * a kernel mapping, to by calling create_bounce() to create a
- * buffer in normal memory.
- **/
-
-void blk_queue_make_request(request_queue_t * q, make_request_fn * mfn)
-{
- q->make_request_fn = mfn;
-}
-
-/**
- * blk_queue_bounce_limit - set bounce buffer limit for queue
- * @q: the request queue for the device
- * @dma_addr: bus address limit
- *
- * Description:
- * Different hardware can have different requirements as to what pages
- * it can do I/O directly to. A low level driver can call
- * blk_queue_bounce_limit to have lower memory pages allocated as bounce
- * buffers for doing I/O to pages residing above @page. By default
- * the block layer sets this to the highest numbered "low" memory page.
- **/
-void blk_queue_bounce_limit(request_queue_t *q, u64 dma_addr)
-{
- unsigned long bounce_pfn = dma_addr >> PAGE_SHIFT;
- unsigned long mb = dma_addr >> 20;
- static request_queue_t *old_q;
-
- /*
- * keep this for debugging for now...
- */
- if (dma_addr != BLK_BOUNCE_HIGH && q != old_q) {
- old_q = q;
- printk("blk: queue %p, ", q);
- if (dma_addr == BLK_BOUNCE_ANY)
- printk("no I/O memory limit\n");
- else
- printk("I/O limit %luMb (mask 0x%Lx)\n", mb,
- (long long) dma_addr);
- }
-
- q->bounce_pfn = bounce_pfn;
-}
-
-
-/*
- * can we merge the two segments, or do we need to start a new one?
- */
-static inline int __blk_seg_merge_ok(struct buffer_head *bh, struct
buffer_head *nxt)
-{
- /*
- * if bh and nxt are contigous and don't cross a 4g boundary, it's ok
- */
- if (BH_CONTIG(bh, nxt) && BH_PHYS_4G(bh, nxt))
- return 1;
-
- return 0;
-}
-
-int blk_seg_merge_ok(struct buffer_head *bh, struct buffer_head *nxt)
-{
- return __blk_seg_merge_ok(bh, nxt);
-}
-
-static inline int ll_new_segment(request_queue_t *q, struct request *req, int
max_segments)
-{
- if (req->nr_segments < max_segments) {
- req->nr_segments++;
- return 1;
- }
- return 0;
-}
-
-static int ll_back_merge_fn(request_queue_t *q, struct request *req,
- struct buffer_head *bh, int max_segments)
-{
- if (__blk_seg_merge_ok(req->bhtail, bh))
- return 1;
-
- return ll_new_segment(q, req, max_segments);
-}
-
-static int ll_front_merge_fn(request_queue_t *q, struct request *req,
- struct buffer_head *bh, int max_segments)
-{
- if (__blk_seg_merge_ok(bh, req->bh))
- return 1;
-
- return ll_new_segment(q, req, max_segments);
-}
-
-static int ll_merge_requests_fn(request_queue_t *q, struct request *req,
- struct request *next, int max_segments)
-{
- int total_segments = req->nr_segments + next->nr_segments;
-
- if (__blk_seg_merge_ok(req->bhtail, next->bh))
- total_segments--;
-
- if (total_segments > max_segments)
- return 0;
-
- req->nr_segments = total_segments;
- return 1;
-}
-
-/*
- * "plug" the device if there are no outstanding requests: this will
- * force the transfer to start only after we have put all the requests
- * on the list.
- *
- * This is called with interrupts off and no requests on the queue.
- * (and with the request spinlock acquired)
- */
-static void generic_plug_device(request_queue_t *q, kdev_t dev)
-{
- /*
- * no need to replug device
- */
- if (!list_empty(&q->queue_head) || q->plugged)
- return;
-
- q->plugged = 1;
- queue_task(&q->plug_tq, &tq_disk);
-}
-
-/*
- * remove the plug and let it rip..
- */
-static inline void __generic_unplug_device(request_queue_t *q)
-{
- if (q->plugged) {
- q->plugged = 0;
- if (!list_empty(&q->queue_head))
- q->request_fn(q);
- }
-}
-
-void generic_unplug_device(void *data)
-{
- request_queue_t *q = (request_queue_t *) data;
- unsigned long flags;
-
- spin_lock_irqsave(&io_request_lock, flags);
- __generic_unplug_device(q);
- spin_unlock_irqrestore(&io_request_lock, flags);
-}
-
-/** blk_grow_request_list
- * @q: The &request_queue_t
- * @nr_requests: how many requests are desired
- *
- * More free requests are added to the queue's free lists, bringing
- * the total number of requests to @nr_requests.
- *
- * The requests are added equally to the request queue's read
- * and write freelists.
- *
- * This function can sleep.
- *
- * Returns the (new) number of requests which the queue has available.
- */
-int blk_grow_request_list(request_queue_t *q, int nr_requests, int
max_queue_sectors)
-{
- unsigned long flags;
- /* Several broken drivers assume that this function doesn't sleep,
- * this causes system hangs during boot.
- * As a temporary fix, make the function non-blocking.
- */
- spin_lock_irqsave(&io_request_lock, flags);
- while (q->nr_requests < nr_requests) {
- struct request *rq;
-
- rq = kmem_cache_alloc(request_cachep, SLAB_ATOMIC);
- if (rq == NULL)
- break;
- memset(rq, 0, sizeof(*rq));
- rq->rq_status = RQ_INACTIVE;
- list_add(&rq->queue, &q->rq.free);
- q->rq.count++;
-
- q->nr_requests++;
- }
-
- /*
- * Wakeup waiters after both one quarter of the
- * max-in-fligh queue and one quarter of the requests
- * are available again.
- */
-
- q->batch_requests = q->nr_requests / 4;
- if (q->batch_requests > 32)
- q->batch_requests = 32;
- q->batch_sectors = max_queue_sectors / 4;
-
- q->max_queue_sectors = max_queue_sectors;
-
- BUG_ON(!q->batch_sectors);
- atomic_set(&q->nr_sectors, 0);
-
- spin_unlock_irqrestore(&io_request_lock, flags);
- return q->nr_requests;
-}
-
-static void blk_init_free_list(request_queue_t *q)
-{
- struct sysinfo si;
- int megs; /* Total memory, in megabytes */
- int nr_requests, max_queue_sectors = MAX_QUEUE_SECTORS;
-
- INIT_LIST_HEAD(&q->rq.free);
- q->rq.count = 0;
- q->rq.pending[READ] = q->rq.pending[WRITE] = 0;
- q->nr_requests = 0;
-
- si_meminfo(&si);
- megs = si.totalram >> (20 - PAGE_SHIFT);
- nr_requests = MAX_NR_REQUESTS;
- if (megs < 30) {
- nr_requests /= 2;
- max_queue_sectors /= 2;
- }
- /* notice early if anybody screwed the defaults */
- BUG_ON(!nr_requests);
- BUG_ON(!max_queue_sectors);
-
- blk_grow_request_list(q, nr_requests, max_queue_sectors);
-
- init_waitqueue_head(&q->wait_for_requests);
-
- spin_lock_init(&q->queue_lock);
-}
-
-static int __make_request(request_queue_t * q, int rw, struct buffer_head *
bh);
-
-/**
- * blk_init_queue - prepare a request queue for use with a block device
- * @q: The &request_queue_t to be initialised
- * @rfn: The function to be called to process requests that have been
- * placed on the queue.
- *
- * Description:
- * If a block device wishes to use the standard request handling procedures,
- * which sorts requests and coalesces adjacent requests, then it must
- * call blk_init_queue(). The function @rfn will be called when there
- * are requests on the queue that need to be processed. If the device
- * supports plugging, then @rfn may not be called immediately when requests
- * are available on the queue, but may be called at some time later instead.
- * Plugged queues are generally unplugged when a buffer belonging to one
- * of the requests on the queue is needed, or due to memory pressure.
- *
- * @rfn is not required, or even expected, to remove all requests off the
- * queue, but only as many as it can handle at a time. If it does leave
- * requests on the queue, it is responsible for arranging that the requests
- * get dealt with eventually.
- *
- * A global spin lock $io_request_lock must be held while manipulating the
- * requests on the request queue.
- *
- * The request on the head of the queue is by default assumed to be
- * potentially active, and it is not considered for re-ordering or merging
- * whenever the given queue is unplugged. This behaviour can be changed with
- * blk_queue_headactive().
- *
- * Note:
- * blk_init_queue() must be paired with a blk_cleanup_queue() call
- * when the block device is deactivated (such as at module unload).
- **/
-void blk_init_queue(request_queue_t * q, request_fn_proc * rfn)
-{
- INIT_LIST_HEAD(&q->queue_head);
- elevator_init(&q->elevator, ELEVATOR_LINUS);
- blk_init_free_list(q);
- q->request_fn = rfn;
- q->back_merge_fn = ll_back_merge_fn;
- q->front_merge_fn = ll_front_merge_fn;
- q->merge_requests_fn = ll_merge_requests_fn;
- q->make_request_fn = __make_request;
- q->plug_tq.sync = 0;
- q->plug_tq.routine = &generic_unplug_device;
- q->plug_tq.data = q;
- q->plugged = 0;
- q->can_throttle = 0;
-
- /*
- * These booleans describe the queue properties. We set the
- * default (and most common) values here. Other drivers can
- * use the appropriate functions to alter the queue properties.
- * as appropriate.
- */
- q->plug_device_fn = generic_plug_device;
- q->head_active = 1;
-
- blk_queue_bounce_limit(q, BLK_BOUNCE_HIGH);
-}
-
-#define blkdev_free_rq(list) list_entry((list)->next, struct request, queue);
-/*
- * Get a free request. io_request_lock must be held and interrupts
- * disabled on the way in. Returns NULL if there are no free requests.
- */
-static struct request *get_request(request_queue_t *q, int rw)
-{
- struct request *rq = NULL;
- struct request_list *rl = &q->rq;
-
- if (blk_oversized_queue(q)) {
- int rlim = q->nr_requests >> 5;
-
- if (rlim < 4)
- rlim = 4;
-
- /*
- * if its a write, or we have more than a handful of reads
- * pending, bail out
- */
- if ((rw == WRITE) || (rw == READ && rl->pending[READ] > rlim))
- return NULL;
- if (blk_oversized_queue_reads(q))
- return NULL;
- }
-
- if (!list_empty(&rl->free)) {
- rq = blkdev_free_rq(&rl->free);
- list_del(&rq->queue);
- rl->count--;
- rl->pending[rw]++;
- rq->rq_status = RQ_ACTIVE;
- rq->cmd = rw;
- rq->special = NULL;
- rq->q = q;
- }
-
- return rq;
-}
-
-/*
- * Here's the request allocation design, low latency version:
- *
- * 1: Blocking on request exhaustion is a key part of I/O throttling.
- *
- * 2: We want to be `fair' to all requesters. We must avoid starvation, and
- * attempt to ensure that all requesters sleep for a similar duration.
Hence
- * no stealing requests when there are other processes waiting.
- *
- * There used to be more here, attempting to allow a process to send in a
- * number of requests once it has woken up. But, there's no way to
- * tell if a process has just been woken up, or if it is a new process
- * coming in to steal requests from the waiters. So, we give up and force
- * everyone to wait fairly.
- *
- * So here's what we do:
- *
- * a) A READA requester fails if free_requests < batch_requests
- *
- * We don't want READA requests to prevent sleepers from ever
- * waking. Note that READA is used extremely rarely - a few
- * filesystems use it for directory readahead.
- *
- * When a process wants a new request:
- *
- * b) If free_requests == 0, the requester sleeps in FIFO manner, and
- * the queue full condition is set. The full condition is not
- * cleared until there are no longer any waiters. Once the full
- * condition is set, all new io must wait, hopefully for a very
- * short period of time.
- *
- * When a request is released:
- *
- * c) If free_requests < batch_requests, do nothing.
- *
- * d) If free_requests >= batch_requests, wake up a single waiter.
- *
- * As each waiter gets a request, he wakes another waiter. We do this
- * to prevent a race where an unplug might get run before a request makes
- * it's way onto the queue. The result is a cascade of wakeups, so delaying
- * the initial wakeup until we've got batch_requests available helps avoid
- * wakeups where there aren't any requests available yet.
- */
-
-static struct request *__get_request_wait(request_queue_t *q, int rw)
-{
- register struct request *rq;
- DECLARE_WAITQUEUE(wait, current);
-
- add_wait_queue_exclusive(&q->wait_for_requests, &wait);
-
- do {
- set_current_state(TASK_UNINTERRUPTIBLE);
- spin_lock_irq(&io_request_lock);
- if (blk_oversized_queue(q) || q->rq.count == 0) {
- __generic_unplug_device(q);
- spin_unlock_irq(&io_request_lock);
- schedule();
- spin_lock_irq(&io_request_lock);
- }
- rq = get_request(q, rw);
- spin_unlock_irq(&io_request_lock);
- } while (rq == NULL);
- remove_wait_queue(&q->wait_for_requests, &wait);
- current->state = TASK_RUNNING;
-
- return rq;
-}
-
-static void get_request_wait_wakeup(request_queue_t *q, int rw)
-{
- /*
- * avoid losing an unplug if a second __get_request_wait did the
- * generic_unplug_device while our __get_request_wait was running
- * w/o the queue_lock held and w/ our request out of the queue.
- */
- if (waitqueue_active(&q->wait_for_requests))
- wake_up(&q->wait_for_requests);
-}
-
-/* RO fail safe mechanism */
-
-static long ro_bits[MAX_BLKDEV][8];
-
-int is_read_only(kdev_t dev)
-{
- int minor,major;
-
- major = MAJOR(dev);
- minor = MINOR(dev);
- if (major < 0 || major >= MAX_BLKDEV) return 0;
- return ro_bits[major][minor >> 5] & (1 << (minor & 31));
-}
-
-void set_device_ro(kdev_t dev,int flag)
-{
- int minor,major;
-
- major = MAJOR(dev);
- minor = MINOR(dev);
- if (major < 0 || major >= MAX_BLKDEV) return;
- if (flag) ro_bits[major][minor >> 5] |= 1 << (minor & 31);
- else ro_bits[major][minor >> 5] &= ~(1 << (minor & 31));
-}
-
-inline void drive_stat_acct (kdev_t dev, int rw,
- unsigned long nr_sectors, int new_io)
-{
- unsigned int major = MAJOR(dev);
- unsigned int index;
-
- index = disk_index(dev);
- if ((index >= DK_MAX_DISK) || (major >= DK_MAX_MAJOR))
- return;
-
- kstat.dk_drive[major][index] += new_io;
- if (rw == READ) {
- kstat.dk_drive_rio[major][index] += new_io;
- kstat.dk_drive_rblk[major][index] += nr_sectors;
- } else if (rw == WRITE) {
- kstat.dk_drive_wio[major][index] += new_io;
- kstat.dk_drive_wblk[major][index] += nr_sectors;
- } else
- printk(KERN_ERR "drive_stat_acct: cmd not R/W?\n");
-}
-
-#ifdef CONFIG_BLK_STATS
-/*
- * Return up to two hd_structs on which to do IO accounting for a given
- * request.
- *
- * On a partitioned device, we want to account both against the partition
- * and against the whole disk.
- */
-static void locate_hd_struct(struct request *req,
- struct hd_struct **hd1,
- struct hd_struct **hd2)
-{
- struct gendisk *gd;
-
- *hd1 = NULL;
- *hd2 = NULL;
-
- gd = get_gendisk(req->rq_dev);
- if (gd && gd->part) {
- /* Mask out the partition bits: account for the entire disk */
- int devnr = MINOR(req->rq_dev) >> gd->minor_shift;
- int whole_minor = devnr << gd->minor_shift;
-
- *hd1 = &gd->part[whole_minor];
- if (whole_minor != MINOR(req->rq_dev))
- *hd2= &gd->part[MINOR(req->rq_dev)];
- }
-}
-
-/*
- * Round off the performance stats on an hd_struct.
- *
- * The average IO queue length and utilisation statistics are maintained
- * by observing the current state of the queue length and the amount of
- * time it has been in this state for.
- * Normally, that accounting is done on IO completion, but that can result
- * in more than a second's worth of IO being accounted for within any one
- * second, leading to >100% utilisation. To deal with that, we do a
- * round-off before returning the results when reading /proc/partitions,
- * accounting immediately for all queue usage up to the current jiffies and
- * restarting the counters again.
- */
-void disk_round_stats(struct hd_struct *hd)
-{
- unsigned long now = jiffies;
-
- hd->aveq += (hd->ios_in_flight * (jiffies - hd->last_queue_change));
- hd->last_queue_change = now;
-
- if (hd->ios_in_flight)
- hd->io_ticks += (now - hd->last_idle_time);
- hd->last_idle_time = now;
-}
-
-static inline void down_ios(struct hd_struct *hd)
-{
- disk_round_stats(hd);
- --hd->ios_in_flight;
-}
-
-static inline void up_ios(struct hd_struct *hd)
-{
- disk_round_stats(hd);
- ++hd->ios_in_flight;
-}
-
-static void account_io_start(struct hd_struct *hd, struct request *req,
- int merge, int sectors)
-{
- switch (req->cmd) {
- case READ:
- if (merge)
- hd->rd_merges++;
- hd->rd_sectors += sectors;
- break;
- case WRITE:
- if (merge)
- hd->wr_merges++;
- hd->wr_sectors += sectors;
- break;
- }
- if (!merge)
- up_ios(hd);
-}
-
-static void account_io_end(struct hd_struct *hd, struct request *req)
-{
- unsigned long duration = jiffies - req->start_time;
- switch (req->cmd) {
- case READ:
- hd->rd_ticks += duration;
- hd->rd_ios++;
- break;
- case WRITE:
- hd->wr_ticks += duration;
- hd->wr_ios++;
- break;
- }
- down_ios(hd);
-}
-
-void req_new_io(struct request *req, int merge, int sectors)
-{
- struct hd_struct *hd1, *hd2;
-
- locate_hd_struct(req, &hd1, &hd2);
- if (hd1)
- account_io_start(hd1, req, merge, sectors);
- if (hd2)
- account_io_start(hd2, req, merge, sectors);
-}
-
-void req_merged_io(struct request *req)
-{
- struct hd_struct *hd1, *hd2;
-
- locate_hd_struct(req, &hd1, &hd2);
- if (hd1)
- down_ios(hd1);
- if (hd2)
- down_ios(hd2);
-}
-
-void req_finished_io(struct request *req)
-{
- struct hd_struct *hd1, *hd2;
-
- locate_hd_struct(req, &hd1, &hd2);
- if (hd1)
- account_io_end(hd1, req);
- if (hd2)
- account_io_end(hd2, req);
-}
-EXPORT_SYMBOL(req_finished_io);
-#endif /* CONFIG_BLK_STATS */
-
-/*
- * add-request adds a request to the linked list.
- * io_request_lock is held and interrupts disabled, as we muck with the
- * request queue list.
- *
- * By this point, req->cmd is always either READ/WRITE, never READA,
- * which is important for drive_stat_acct() above.
- */
-static inline void add_request(request_queue_t * q, struct request * req,
- struct list_head *insert_here)
-{
- drive_stat_acct(req->rq_dev, req->cmd, req->nr_sectors, 1);
-
- if (!q->plugged && q->head_active && insert_here == &q->queue_head) {
- spin_unlock_irq(&io_request_lock);
- BUG();
- }
-
- /*
- * elevator indicated where it wants this request to be
- * inserted at elevator_merge time
- */
- list_add(&req->queue, insert_here);
-}
-
-/*
- * Must be called with io_request_lock held and interrupts disabled
- */
-void blkdev_release_request(struct request *req)
-{
- request_queue_t *q = req->q;
-
- req->rq_status = RQ_INACTIVE;
- req->q = NULL;
-
- /*
- * Request may not have originated from ll_rw_blk. if not,
- * assume it has free buffers and check waiters
- */
- if (q) {
- struct request_list *rl = &q->rq;
- int oversized_batch = 0;
-
- if (q->can_throttle)
- oversized_batch = blk_oversized_queue_batch(q);
- rl->count++;
- /*
- * paranoia check
- */
- if (req->cmd == READ || req->cmd == WRITE)
- rl->pending[req->cmd]--;
- if (rl->pending[READ] > q->nr_requests)
- printk("blk: reads: %u\n", rl->pending[READ]);
- if (rl->pending[WRITE] > q->nr_requests)
- printk("blk: writes: %u\n", rl->pending[WRITE]);
- if (rl->pending[READ] + rl->pending[WRITE] > q->nr_requests)
- printk("blk: r/w: %u + %u > %u\n", rl->pending[READ],
rl->pending[WRITE], q->nr_requests);
- list_add(&req->queue, &rl->free);
- if (rl->count >= q->batch_requests && !oversized_batch) {
- smp_mb();
- if (waitqueue_active(&q->wait_for_requests))
- wake_up(&q->wait_for_requests);
- }
- }
-}
-
-/*
- * Has to be called with the request spinlock acquired
- */
-static void attempt_merge(request_queue_t * q,
- struct request *req,
- int max_sectors,
- int max_segments)
-{
- struct request *next;
-
- next = blkdev_next_request(req);
- if (req->sector + req->nr_sectors != next->sector)
- return;
- if (req->cmd != next->cmd
- || req->rq_dev != next->rq_dev
- || req->nr_sectors + next->nr_sectors > max_sectors
- || next->waiting)
- return;
- /*
- * If we are not allowed to merge these requests, then
- * return. If we are allowed to merge, then the count
- * will have been updated to the appropriate number,
- * and we shouldn't do it here too.
- */
- if (!q->merge_requests_fn(q, req, next, max_segments))
- return;
-
- q->elevator.elevator_merge_req_fn(req, next);
-
- /* At this point we have either done a back merge
- * or front merge. We need the smaller start_time of
- * the merged requests to be the current request
- * for accounting purposes.
- */
- if (time_after(req->start_time, next->start_time))
- req->start_time = next->start_time;
-
- req->bhtail->b_reqnext = next->bh;
- req->bhtail = next->bhtail;
- req->nr_sectors = req->hard_nr_sectors += next->hard_nr_sectors;
- list_del(&next->queue);
-
- /* One last thing: we have removed a request, so we now have one
- less expected IO to complete for accounting purposes. */
- req_merged_io(req);
-
- blkdev_release_request(next);
-}
-
-static inline void attempt_back_merge(request_queue_t * q,
- struct request *req,
- int max_sectors,
- int max_segments)
-{
- if (&req->queue == q->queue_head.prev)
- return;
- attempt_merge(q, req, max_sectors, max_segments);
-}
-
-static inline void attempt_front_merge(request_queue_t * q,
- struct list_head * head,
- struct request *req,
- int max_sectors,
- int max_segments)
-{
- struct list_head * prev;
-
- prev = req->queue.prev;
- if (head == prev)
- return;
- attempt_merge(q, blkdev_entry_to_request(prev), max_sectors,
max_segments);
-}
-
-static int __make_request(request_queue_t * q, int rw,
- struct buffer_head * bh)
-{
- unsigned int sector, count, sync;
- int max_segments = MAX_SEGMENTS;
- struct request * req, *freereq = NULL;
- int rw_ahead, max_sectors, el_ret;
- struct list_head *head, *insert_here;
- int latency;
- elevator_t *elevator = &q->elevator;
- int should_wake = 0;
-
- count = bh->b_size >> 9;
- sector = bh->b_rsector;
- sync = test_and_clear_bit(BH_Sync, &bh->b_state);
-
- rw_ahead = 0; /* normal case; gets changed below for READA */
- switch (rw) {
- case READA:
-#if 0 /* bread() misinterprets failed READA attempts as IO errors on SMP */
- rw_ahead = 1;
-#endif
- rw = READ; /* drop into READ */
- case READ:
- case WRITE:
- latency = elevator_request_latency(elevator, rw);
- break;
- default:
- BUG();
- goto end_io;
- }
-
- /* We'd better have a real physical mapping!
- Check this bit only if the buffer was dirty and just locked
- down by us so at this point flushpage will block and
- won't clear the mapped bit under us. */
- if (!buffer_mapped(bh))
- BUG();
-
- /*
- * Temporary solution - in 2.5 this will be done by the lowlevel
- * driver. Create a bounce buffer if the buffer data points into
- * high memory - keep the original buffer otherwise.
- */
- bh = blk_queue_bounce(q, rw, bh);
-
-/* look for a free request. */
- /*
- * Try to coalesce the new request with old requests
- */
- max_sectors = get_max_sectors(bh->b_rdev);
-
- req = NULL;
- head = &q->queue_head;
- /*
- * Now we acquire the request spinlock, we have to be mega careful
- * not to schedule or do something nonatomic
- */
- spin_lock_irq(&io_request_lock);
-
-again:
- insert_here = head->prev;
-
- if (list_empty(head)) {
- q->plug_device_fn(q, bh->b_rdev); /* is atomic */
- goto get_rq;
- } else if (q->head_active && !q->plugged)
- head = head->next;
-
- el_ret = elevator->elevator_merge_fn(q, &req, head, bh, rw,max_sectors);
- switch (el_ret) {
-
- case ELEVATOR_BACK_MERGE:
- if (!q->back_merge_fn(q, req, bh, max_segments)) {
- insert_here = &req->queue;
- break;
- }
- req->bhtail->b_reqnext = bh;
- req->bhtail = bh;
- req->nr_sectors = req->hard_nr_sectors += count;
- blk_started_io(count);
- blk_started_sectors(req, count);
- drive_stat_acct(req->rq_dev, req->cmd, count, 0);
- req_new_io(req, 1, count);
- attempt_back_merge(q, req, max_sectors, max_segments);
- goto out;
-
- case ELEVATOR_FRONT_MERGE:
- if (!q->front_merge_fn(q, req, bh, max_segments)) {
- insert_here = req->queue.prev;
- break;
- }
- bh->b_reqnext = req->bh;
- req->bh = bh;
- /*
- * may not be valid, but queues not having bounce
- * enabled for highmem pages must not look at
- * ->buffer anyway
- */
- req->buffer = bh->b_data;
- req->current_nr_sectors = req->hard_cur_sectors = count;
- req->sector = req->hard_sector = sector;
- req->nr_sectors = req->hard_nr_sectors += count;
- blk_started_io(count);
- blk_started_sectors(req, count);
- drive_stat_acct(req->rq_dev, req->cmd, count, 0);
- req_new_io(req, 1, count);
- attempt_front_merge(q, head, req, max_sectors,
max_segments);
- goto out;
-
- /*
- * elevator says don't/can't merge. get new request
- */
- case ELEVATOR_NO_MERGE:
- /*
- * use elevator hints as to where to insert the
- * request. if no hints, just add it to the back
- * of the queue
- */
- if (req)
- insert_here = &req->queue;
- break;
-
- default:
- printk("elevator returned crap (%d)\n", el_ret);
- BUG();
- }
-
-get_rq:
- if (freereq) {
- req = freereq;
- freereq = NULL;
- } else {
- /*
- * See description above __get_request_wait()
- */
- if (rw_ahead) {
- if (q->rq.count < q->batch_requests ||
blk_oversized_queue_batch(q)) {
- spin_unlock_irq(&io_request_lock);
- goto end_io;
- }
- req = get_request(q, rw);
- if (req == NULL)
- BUG();
- } else {
- req = get_request(q, rw);
- if (req == NULL) {
- spin_unlock_irq(&io_request_lock);
- freereq = __get_request_wait(q, rw);
- head = &q->queue_head;
- spin_lock_irq(&io_request_lock);
- should_wake = 1;
- goto again;
- }
- }
- }
-
-/* fill up the request-info, and add it to the queue */
- req->elevator_sequence = latency;
- req->cmd = rw;
- req->errors = 0;
- req->hard_sector = req->sector = sector;
- req->hard_nr_sectors = req->nr_sectors = count;
- req->current_nr_sectors = req->hard_cur_sectors = count;
- req->nr_segments = 1; /* Always 1 for a new request. */
- req->nr_hw_segments = 1; /* Always 1 for a new request. */
- req->buffer = bh->b_data;
- req->waiting = NULL;
- req->bh = bh;
- req->bhtail = bh;
- req->rq_dev = bh->b_rdev;
- req->start_time = jiffies;
- req_new_io(req, 0, count);
- blk_started_io(count);
- blk_started_sectors(req, count);
- add_request(q, req, insert_here);
-out:
- if (freereq)
- blkdev_release_request(freereq);
- if (should_wake)
- get_request_wait_wakeup(q, rw);
- if (sync)
- __generic_unplug_device(q);
- spin_unlock_irq(&io_request_lock);
- return 0;
-end_io:
- bh->b_end_io(bh, test_bit(BH_Uptodate, &bh->b_state));
- return 0;
-}
-
-/**
- * generic_make_request: hand a buffer head to it's device driver for I/O
- * @rw: READ, WRITE, or READA - what sort of I/O is desired.
- * @bh: The buffer head describing the location in memory and on the device.
- *
- * generic_make_request() is used to make I/O requests of block
- * devices. It is passed a &struct buffer_head and a &rw value. The
- * %READ and %WRITE options are (hopefully) obvious in meaning. The
- * %READA value means that a read is required, but that the driver is
- * free to fail the request if, for example, it cannot get needed
- * resources immediately.
- *
- * generic_make_request() does not return any status. The
- * success/failure status of the request, along with notification of
- * completion, is delivered asynchronously through the bh->b_end_io
- * function described (one day) else where.
- *
- * The caller of generic_make_request must make sure that b_page,
- * b_addr, b_size are set to describe the memory buffer, that b_rdev
- * and b_rsector are set to describe the device address, and the
- * b_end_io and optionally b_private are set to describe how
- * completion notification should be signaled. BH_Mapped should also
- * be set (to confirm that b_dev and b_blocknr are valid).
- *
- * generic_make_request and the drivers it calls may use b_reqnext,
- * and may change b_rdev and b_rsector. So the values of these fields
- * should NOT be depended on after the call to generic_make_request.
- * Because of this, the caller should record the device address
- * information in b_dev and b_blocknr.
- *
- * Apart from those fields mentioned above, no other fields, and in
- * particular, no other flags, are changed by generic_make_request or
- * any lower level drivers.
- * */
-void generic_make_request (int rw, struct buffer_head * bh)
-{
- int major = MAJOR(bh->b_rdev);
- int minorsize = 0;
- request_queue_t *q;
-
- if (!bh->b_end_io)
- BUG();
-
- /* Test device size, when known. */
- if (blk_size[major])
- minorsize = blk_size[major][MINOR(bh->b_rdev)];
- if (minorsize) {
- unsigned long maxsector = (minorsize << 1) + 1;
- unsigned long sector = bh->b_rsector;
- unsigned int count = bh->b_size >> 9;
-
- if (maxsector < count || maxsector - count < sector) {
- /* Yecch */
- bh->b_state &= ~(1 << BH_Dirty);
-
- /* This may well happen - the kernel calls bread()
- without checking the size of the device, e.g.,
- when mounting a device. */
- printk(KERN_INFO
- "attempt to access beyond end of device\n");
- printk(KERN_INFO "%s: rw=%d, want=%ld, limit=%d\n",
- kdevname(bh->b_rdev), rw,
- (sector + count)>>1, minorsize);
-
- bh->b_end_io(bh, 0);
- return;
- }
- }
-
- /*
- * Resolve the mapping until finished. (drivers are
- * still free to implement/resolve their own stacking
- * by explicitly returning 0)
- */
- /* NOTE: we don't repeat the blk_size check for each new device.
- * Stacking drivers are expected to know what they are doing.
- */
- do {
- q = __blk_get_queue(bh->b_rdev);
- if (!q) {
- printk(KERN_ERR
- "generic_make_request: Trying to access "
- "nonexistent block-device %s (%ld)\n",
- kdevname(bh->b_rdev), bh->b_rsector);
- buffer_IO_error(bh);
- break;
- }
- } while (q->make_request_fn(q, rw, bh));
-}
-
-
-/**
- * submit_bh: submit a buffer_head to the block device later for I/O
- * @rw: whether to %READ or %WRITE, or maybe to %READA (read ahead)
- * @bh: The &struct buffer_head which describes the I/O
- *
- * submit_bh() is very similar in purpose to generic_make_request(), and
- * uses that function to do most of the work.
- *
- * The extra functionality provided by submit_bh is to determine
- * b_rsector from b_blocknr and b_size, and to set b_rdev from b_dev.
- * This is is appropriate for IO requests that come from the buffer
- * cache and page cache which (currently) always use aligned blocks.
- */
-void submit_bh(int rw, struct buffer_head * bh)
-{
- int count = bh->b_size >> 9;
-
- if (!test_bit(BH_Lock, &bh->b_state))
- BUG();
-
- set_bit(BH_Req, &bh->b_state);
- set_bit(BH_Launder, &bh->b_state);
-
- /*
- * First step, 'identity mapping' - RAID or LVM might
- * further remap this.
- */
- bh->b_rdev = bh->b_dev;
- bh->b_rsector = bh->b_blocknr * count;
-
- get_bh(bh);
- generic_make_request(rw, bh);
-
- /* fix race condition with wait_on_buffer() */
- smp_mb(); /* spin_unlock may have inclusive semantics */
- if (waitqueue_active(&bh->b_wait))
- wake_up(&bh->b_wait);
-
- if (block_dump)
- printk(KERN_DEBUG "%s: %s block %lu/%u on %s\n", current->comm,
rw == WRITE ? "WRITE" : "READ", bh->b_rsector, count, kdevname(bh->b_rdev));
-
- put_bh(bh);
- switch (rw) {
- case WRITE:
- kstat.pgpgout += count;
- break;
- default:
- kstat.pgpgin += count;
- break;
- }
-}
-
-/**
- * ll_rw_block: low-level access to block devices
- * @rw: whether to %READ or %WRITE or maybe %READA (readahead)
- * @nr: number of &struct buffer_heads in the array
- * @bhs: array of pointers to &struct buffer_head
- *
- * ll_rw_block() takes an array of pointers to &struct buffer_heads,
- * and requests an I/O operation on them, either a %READ or a %WRITE.
- * The third %READA option is described in the documentation for
- * generic_make_request() which ll_rw_block() calls.
- *
- * This function provides extra functionality that is not in
- * generic_make_request() that is relevant to buffers in the buffer
- * cache or page cache. In particular it drops any buffer that it
- * cannot get a lock on (with the BH_Lock state bit), any buffer that
- * appears to be clean when doing a write request, and any buffer that
- * appears to be up-to-date when doing read request. Further it marks
- * as clean buffers that are processed for writing (the buffer cache
- * wont assume that they are actually clean until the buffer gets
- * unlocked).
- *
- * ll_rw_block sets b_end_io to simple completion handler that marks
- * the buffer up-to-date (if approriate), unlocks the buffer and wakes
- * any waiters. As client that needs a more interesting completion
- * routine should call submit_bh() (or generic_make_request())
- * directly.
- *
- * Caveat:
- * All of the buffers must be for the same device, and must also be
- * of the current approved size for the device. */
-
-void ll_rw_block(int rw, int nr, struct buffer_head * bhs[])
-{
- unsigned int major;
- int correct_size;
- int i;
-
- if (!nr)
- return;
-
- major = MAJOR(bhs[0]->b_dev);
-
- /* Determine correct block size for this device. */
- correct_size = get_hardsect_size(bhs[0]->b_dev);
-
- /* Verify requested block sizes. */
- for (i = 0; i < nr; i++) {
- struct buffer_head *bh = bhs[i];
- if (bh->b_size % correct_size) {
- printk(KERN_NOTICE "ll_rw_block: device %s: "
- "only %d-char blocks implemented (%u)\n",
- kdevname(bhs[0]->b_dev),
- correct_size, bh->b_size);
- goto sorry;
- }
- }
-
- if ((rw & WRITE) && is_read_only(bhs[0]->b_dev)) {
- printk(KERN_NOTICE "Can't write to read-only device %s\n",
- kdevname(bhs[0]->b_dev));
- goto sorry;
- }
-
- for (i = 0; i < nr; i++) {
- struct buffer_head *bh = bhs[i];
-
- lock_buffer(bh);
-
- /* We have the buffer lock */
- atomic_inc(&bh->b_count);
- bh->b_end_io = end_buffer_io_sync;
-
- switch(rw) {
- case WRITE:
- if (!atomic_set_buffer_clean(bh))
- /* Hmmph! Nothing to write */
- goto end_io;
- __mark_buffer_clean(bh);
- break;
-
- case READA:
- case READ:
- if (buffer_uptodate(bh))
- /* Hmmph! Already have it */
- goto end_io;
- break;
- default:
- BUG();
- end_io:
- bh->b_end_io(bh, test_bit(BH_Uptodate, &bh->b_state));
- continue;
- }
-
- submit_bh(rw, bh);
- }
- return;
-
-sorry:
- /* Make sure we don't get infinite dirty retries.. */
- for (i = 0; i < nr; i++)
- mark_buffer_clean(bhs[i]);
-}
-
-#ifdef CONFIG_STRAM_SWAP
-extern int stram_device_init (void);
-#endif
-
-static void blk_writeback_timer(unsigned long data)
-{
- wakeup_bdflush();
- wakeup_kupdate();
-}
-
-/**
- * end_that_request_first - end I/O on one buffer.
- * @req: the request being processed
- * @uptodate: 0 for I/O error
- * @name: the name printed for an I/O error
- *
- * Description:
- * Ends I/O on the first buffer attached to @req, and sets it up
- * for the next buffer_head (if any) in the cluster.
- *
- * Return:
- * 0 - we are done with this request, call end_that_request_last()
- * 1 - still buffers pending for this request
- *
- * Caveat:
- * Drivers implementing their own end_request handling must call
- * blk_finished_io() appropriately.
- **/
-
-int end_that_request_first (struct request *req, int uptodate, char *name)
-{
- struct buffer_head * bh;
- int nsect;
-
- req->errors = 0;
- if (!uptodate)
- printk("end_request: I/O error, dev %s (%s), sector %lu\n",
- kdevname(req->rq_dev), name, req->sector);
-
- if ((bh = req->bh) != NULL) {
- nsect = bh->b_size >> 9;
- blk_finished_io(nsect);
- blk_finished_sectors(req, nsect);
- req->bh = bh->b_reqnext;
- bh->b_reqnext = NULL;
- bh->b_end_io(bh, uptodate);
- if ((bh = req->bh) != NULL) {
- req->hard_sector += nsect;
- req->hard_nr_sectors -= nsect;
- req->sector = req->hard_sector;
- req->nr_sectors = req->hard_nr_sectors;
-
- req->current_nr_sectors = bh->b_size >> 9;
- req->hard_cur_sectors = req->current_nr_sectors;
- if (req->nr_sectors < req->current_nr_sectors) {
- req->nr_sectors = req->current_nr_sectors;
- printk("end_request: buffer-list destroyed\n");
- }
- req->buffer = bh->b_data;
- return 1;
- }
- }
- return 0;
-}
-
-extern int laptop_mode;
-
-void end_that_request_last(struct request *req)
-{
- struct completion *waiting = req->waiting;
-
- /*
- * schedule the writeout of pending dirty data when the disk is idle
- */
- if (laptop_mode && req->cmd == READ)
- mod_timer(&writeback_timer, jiffies + 5 * HZ);
-
- req_finished_io(req);
- blkdev_release_request(req);
- if (waiting)
- complete(waiting);
-}
-
-int __init blk_dev_init(void)
-{
- struct blk_dev_struct *dev;
-
- request_cachep = kmem_cache_create("blkdev_requests",
- sizeof(struct request),
- 0, SLAB_HWCACHE_ALIGN, NULL, NULL);
-
- if (!request_cachep)
- panic("Can't create request pool slab cache\n");
-
- for (dev = blk_dev + MAX_BLKDEV; dev-- != blk_dev;)
- dev->queue = NULL;
-
- memset(ro_bits,0,sizeof(ro_bits));
- memset(max_readahead, 0, sizeof(max_readahead));
- memset(max_sectors, 0, sizeof(max_sectors));
-
- blk_max_low_pfn = max_low_pfn - 1;
- blk_max_pfn = max_pfn - 1;
-
- init_timer(&writeback_timer);
- writeback_timer.function = blk_writeback_timer;
-
-#ifdef CONFIG_AMIGA_Z2RAM
- z2_init();
-#endif
-#ifdef CONFIG_STRAM_SWAP
- stram_device_init();
-#endif
-#ifdef CONFIG_ISP16_CDI
- isp16_init();
-#endif
-#ifdef CONFIG_BLK_DEV_PS2
- ps2esdi_init();
-#endif
-#ifdef CONFIG_BLK_DEV_XD
- xd_init();
-#endif
-#ifdef CONFIG_BLK_DEV_MFM
- mfm_init();
-#endif
-#ifdef CONFIG_PARIDE
- { extern void paride_init(void); paride_init(); };
-#endif
-#ifdef CONFIG_MAC_FLOPPY
- swim3_init();
-#endif
-#ifdef CONFIG_BLK_DEV_SWIM_IOP
- swimiop_init();
-#endif
-#ifdef CONFIG_AMIGA_FLOPPY
- amiga_floppy_init();
-#endif
-#ifdef CONFIG_ATARI_FLOPPY
- atari_floppy_init();
-#endif
-#ifdef CONFIG_BLK_DEV_FD
- floppy_init();
-#else
-#if defined(__i386__) && !defined(CONFIG_XEN) /* Do we even need this? */
- outb_p(0xc, 0x3f2);
-#endif
-#endif
-#ifdef CONFIG_CDU31A
- cdu31a_init();
-#endif
-#ifdef CONFIG_ATARI_ACSI
- acsi_init();
-#endif
-#ifdef CONFIG_MCD
- mcd_init();
-#endif
-#ifdef CONFIG_MCDX
- mcdx_init();
-#endif
-#ifdef CONFIG_SBPCD
- sbpcd_init();
-#endif
-#ifdef CONFIG_AZTCD
- aztcd_init();
-#endif
-#ifdef CONFIG_CDU535
- sony535_init();
-#endif
-#ifdef CONFIG_GSCD
- gscd_init();
-#endif
-#ifdef CONFIG_CM206
- cm206_init();
-#endif
-#ifdef CONFIG_OPTCD
- optcd_init();
-#endif
-#ifdef CONFIG_SJCD
- sjcd_init();
-#endif
-#ifdef CONFIG_APBLOCK
- ap_init();
-#endif
-#ifdef CONFIG_DDV
- ddv_init();
-#endif
-#ifdef CONFIG_MDISK
- mdisk_init();
-#endif
-#ifdef CONFIG_DASD
- dasd_init();
-#endif
-#if defined(CONFIG_S390_TAPE) && defined(CONFIG_S390_TAPE_BLOCK)
- tapeblock_init();
-#endif
-#ifdef CONFIG_BLK_DEV_XPRAM
- xpram_init();
-#endif
-
-#ifdef CONFIG_SUN_JSFLASH
- jsfd_init();
-#endif
-
-#if defined(CONFIG_XEN_BLKDEV_FRONTEND)
- xlblk_init();
-#endif
-
- return 0;
-};
-
-EXPORT_SYMBOL(io_request_lock);
-EXPORT_SYMBOL(end_that_request_first);
-EXPORT_SYMBOL(end_that_request_last);
-EXPORT_SYMBOL(blk_grow_request_list);
-EXPORT_SYMBOL(blk_init_queue);
-EXPORT_SYMBOL(blk_get_queue);
-EXPORT_SYMBOL(blk_cleanup_queue);
-EXPORT_SYMBOL(blk_queue_headactive);
-EXPORT_SYMBOL(blk_queue_throttle_sectors);
-EXPORT_SYMBOL(blk_queue_make_request);
-EXPORT_SYMBOL(generic_make_request);
-EXPORT_SYMBOL(blkdev_release_request);
-EXPORT_SYMBOL(generic_unplug_device);
-EXPORT_SYMBOL(blk_queue_bounce_limit);
-EXPORT_SYMBOL(blk_max_low_pfn);
-EXPORT_SYMBOL(blk_max_pfn);
-EXPORT_SYMBOL(blk_seg_merge_ok);
-EXPORT_SYMBOL(blk_nohighio);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/drivers/char/Makefile
--- a/linux-2.4.30-xen-sparse/drivers/char/Makefile Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,361 +0,0 @@
-#
-# Makefile for the kernel character device drivers.
-#
-# Note! Dependencies are done automagically by 'make dep', which also
-# removes any old dependencies. DON'T put your own dependencies here
-# unless it's something special (ie not a .c file).
-#
-# Note 2! The CFLAGS definitions are now inherited from the
-# parent makes..
-#
-
-#
-# This file contains the font map for the default (hardware) font
-#
-FONTMAPFILE = cp437.uni
-
-O_TARGET := char.o
-
-obj-y += mem.o tty_io.o n_tty.o tty_ioctl.o raw.o pty.o misc.o random.o
-
-# All of the (potential) objects that export symbols.
-# This list comes from 'grep -l EXPORT_SYMBOL *.[hc]'.
-
-export-objs := busmouse.o console.o keyboard.o sysrq.o \
- misc.o pty.o random.o selection.o serial.o \
- sonypi.o tty_io.o tty_ioctl.o generic_serial.o \
- au1000_gpio.o vac-serial.o hp_psaux.o nvram.o \
- scx200.o fetchop.o
-
-mod-subdirs := joystick ftape drm drm-4.0 pcmcia
-
-list-multi :=
-
-KEYMAP =defkeymap.o
-KEYBD =pc_keyb.o
-CONSOLE =console.o
-SERIAL =serial.o
-
-ifeq ($(ARCH),xen)
- ifneq ($(CONFIG_XEN_PHYSDEV_ACCESS),y)
- KEYBD =
- endif
-endif
-
-ifeq ($(ARCH),s390)
- KEYMAP =
- KEYBD =
- CONSOLE =
- SERIAL =
-endif
-
-ifeq ($(ARCH),mips)
- ifneq ($(CONFIG_PC_KEYB),y)
- KEYBD =
- endif
- ifeq ($(CONFIG_VR41XX_KIU),y)
- KEYMAP =
- KEYBD = vr41xx_keyb.o
- endif
-endif
-
-ifeq ($(ARCH),s390x)
- KEYMAP =
- KEYBD =
- CONSOLE =
- SERIAL =
-endif
-
-ifeq ($(ARCH),m68k)
- ifdef CONFIG_AMIGA
- KEYBD = amikeyb.o
- else
- ifndef CONFIG_MAC
- KEYBD =
- endif
- endif
- SERIAL =
-endif
-
-ifeq ($(ARCH),parisc)
- ifdef CONFIG_GSC_PS2
- KEYBD = hp_psaux.o hp_keyb.o
- else
- KEYBD =
- endif
- ifdef CONFIG_SERIAL_MUX
- CONSOLE += mux.o
- endif
- ifdef CONFIG_PDC_CONSOLE
- CONSOLE += pdc_console.o
- endif
-endif
-
-ifdef CONFIG_Q40
- KEYBD += q40_keyb.o
- SERIAL = serial.o
-endif
-
-ifdef CONFIG_APOLLO
- KEYBD += dn_keyb.o
-endif
-
-ifeq ($(ARCH),parisc)
- ifdef CONFIG_GSC_PS2
- KEYBD = hp_psaux.o hp_keyb.o
- else
- KEYBD =
- endif
- ifdef CONFIG_PDC_CONSOLE
- CONSOLE += pdc_console.o
- endif
-endif
-
-ifeq ($(ARCH),arm)
- ifneq ($(CONFIG_PC_KEYMAP),y)
- KEYMAP =
- endif
- ifneq ($(CONFIG_PC_KEYB),y)
- KEYBD =
- endif
-endif
-
-ifeq ($(ARCH),sh)
- KEYMAP =
- KEYBD =
- CONSOLE =
- ifeq ($(CONFIG_SH_HP600),y)
- KEYMAP = defkeymap.o
- KEYBD = scan_keyb.o hp600_keyb.o
- CONSOLE = console.o
- endif
- ifeq ($(CONFIG_SH_DMIDA),y)
- # DMIDA does not connect the HD64465 PS/2 keyboard port
- # but we allow for USB keyboards to be plugged in.
- KEYMAP = defkeymap.o
- KEYBD = # hd64465_keyb.o pc_keyb.o
- CONSOLE = console.o
- endif
- ifeq ($(CONFIG_SH_EC3104),y)
- KEYMAP = defkeymap.o
- KEYBD = ec3104_keyb.o
- CONSOLE = console.o
- endif
- ifeq ($(CONFIG_SH_DREAMCAST),y)
- KEYMAP = defkeymap.o
- KEYBD =
- CONSOLE = console.o
- endif
-endif
-
-ifeq ($(CONFIG_DECSTATION),y)
- KEYMAP =
- KEYBD =
-endif
-
-ifeq ($(CONFIG_BAGET_MIPS),y)
- KEYBD =
- SERIAL = vac-serial.o
-endif
-
-ifeq ($(CONFIG_NINO),y)
- SERIAL =
-endif
-
-ifneq ($(CONFIG_SUN_SERIAL),)
- SERIAL =
-endif
-
-ifeq ($(CONFIG_QTRONIX_KEYBOARD),y)
- KEYBD = qtronix.o
- KEYMAP = qtronixmap.o
-endif
-
-ifeq ($(CONFIG_DUMMY_KEYB),y)
- KEYBD = dummy_keyb.o
-endif
-
-obj-$(CONFIG_VT) += vt.o vc_screen.o consolemap.o consolemap_deftbl.o
$(CONSOLE) selection.o
-obj-$(CONFIG_SERIAL) += $(SERIAL)
-obj-$(CONFIG_PARPORT_SERIAL) += parport_serial.o
-obj-$(CONFIG_SERIAL_HCDP) += hcdp_serial.o
-obj-$(CONFIG_SERIAL_21285) += serial_21285.o
-obj-$(CONFIG_SERIAL_SA1100) += serial_sa1100.o
-obj-$(CONFIG_SERIAL_AMBA) += serial_amba.o
-obj-$(CONFIG_TS_AU1X00_ADS7846) += au1000_ts.o
-obj-$(CONFIG_SERIAL_DEC) += decserial.o
-
-ifndef CONFIG_SUN_KEYBOARD
- obj-$(CONFIG_VT) += keyboard.o $(KEYMAP) $(KEYBD)
-else
- obj-$(CONFIG_PCI) += keyboard.o $(KEYMAP)
-endif
-
-obj-$(CONFIG_HIL) += hp_keyb.o
-obj-$(CONFIG_MAGIC_SYSRQ) += sysrq.o
-obj-$(CONFIG_ATARI_DSP56K) += dsp56k.o
-obj-$(CONFIG_ROCKETPORT) += rocket.o
-obj-$(CONFIG_MOXA_SMARTIO) += mxser.o
-obj-$(CONFIG_MOXA_INTELLIO) += moxa.o
-obj-$(CONFIG_DIGI) += pcxx.o
-obj-$(CONFIG_DIGIEPCA) += epca.o
-obj-$(CONFIG_CYCLADES) += cyclades.o
-obj-$(CONFIG_STALLION) += stallion.o
-obj-$(CONFIG_ISTALLION) += istallion.o
-obj-$(CONFIG_SIBYTE_SB1250_DUART) += sb1250_duart.o
-obj-$(CONFIG_COMPUTONE) += ip2.o ip2main.o
-obj-$(CONFIG_RISCOM8) += riscom8.o
-obj-$(CONFIG_ISI) += isicom.o
-obj-$(CONFIG_ESPSERIAL) += esp.o
-obj-$(CONFIG_SYNCLINK) += synclink.o
-obj-$(CONFIG_SYNCLINKMP) += synclinkmp.o
-obj-$(CONFIG_N_HDLC) += n_hdlc.o
-obj-$(CONFIG_SPECIALIX) += specialix.o
-obj-$(CONFIG_AMIGA_BUILTIN_SERIAL) += amiserial.o
-obj-$(CONFIG_A2232) += ser_a2232.o generic_serial.o
-obj-$(CONFIG_SX) += sx.o generic_serial.o
-obj-$(CONFIG_RIO) += rio/rio.o generic_serial.o
-obj-$(CONFIG_SH_SCI) += sh-sci.o generic_serial.o
-obj-$(CONFIG_SERIAL167) += serial167.o
-obj-$(CONFIG_MVME147_SCC) += generic_serial.o vme_scc.o
-obj-$(CONFIG_MVME162_SCC) += generic_serial.o vme_scc.o
-obj-$(CONFIG_BVME6000_SCC) += generic_serial.o vme_scc.o
-obj-$(CONFIG_HVC_CONSOLE) += hvc_console.o
-obj-$(CONFIG_SERIAL_TX3912) += generic_serial.o serial_tx3912.o
-obj-$(CONFIG_TXX927_SERIAL) += serial_txx927.o
-obj-$(CONFIG_SERIAL_TXX9) += generic_serial.o serial_txx9.o
-obj-$(CONFIG_IP22_SERIAL) += sgiserial.o
-obj-$(CONFIG_AU1X00_UART) += au1x00-serial.o
-obj-$(CONFIG_SGI_L1_SERIAL) += sn_serial.o
-
-subdir-$(CONFIG_RIO) += rio
-subdir-$(CONFIG_INPUT) += joystick
-
-obj-$(CONFIG_ATIXL_BUSMOUSE) += atixlmouse.o
-obj-$(CONFIG_LOGIBUSMOUSE) += logibusmouse.o
-obj-$(CONFIG_PRINTER) += lp.o
-obj-$(CONFIG_TIPAR) += tipar.o
-obj-$(CONFIG_OBMOUSE) += obmouse.o
-
-ifeq ($(CONFIG_INPUT),y)
-obj-y += joystick/js.o
-endif
-
-obj-$(CONFIG_FETCHOP) += fetchop.o
-obj-$(CONFIG_BUSMOUSE) += busmouse.o
-obj-$(CONFIG_DTLK) += dtlk.o
-obj-$(CONFIG_R3964) += n_r3964.o
-obj-$(CONFIG_APPLICOM) += applicom.o
-obj-$(CONFIG_SONYPI) += sonypi.o
-obj-$(CONFIG_MS_BUSMOUSE) += msbusmouse.o
-obj-$(CONFIG_82C710_MOUSE) += qpmouse.o
-obj-$(CONFIG_AMIGAMOUSE) += amigamouse.o
-obj-$(CONFIG_ATARIMOUSE) += atarimouse.o
-obj-$(CONFIG_ADBMOUSE) += adbmouse.o
-obj-$(CONFIG_PC110_PAD) += pc110pad.o
-obj-$(CONFIG_MK712_MOUSE) += mk712.o
-obj-$(CONFIG_RTC) += rtc.o
-obj-$(CONFIG_GEN_RTC) += genrtc.o
-obj-$(CONFIG_EFI_RTC) += efirtc.o
-obj-$(CONFIG_SGI_DS1286) += ds1286.o
-obj-$(CONFIG_MIPS_RTC) += mips_rtc.o
-obj-$(CONFIG_SGI_IP27_RTC) += ip27-rtc.o
-ifeq ($(CONFIG_PPC),)
- obj-$(CONFIG_NVRAM) += nvram.o
-endif
-obj-$(CONFIG_TOSHIBA) += toshiba.o
-obj-$(CONFIG_I8K) += i8k.o
-obj-$(CONFIG_DS1620) += ds1620.o
-obj-$(CONFIG_DS1742) += ds1742.o
-obj-$(CONFIG_INTEL_RNG) += i810_rng.o
-obj-$(CONFIG_AMD_RNG) += amd768_rng.o
-obj-$(CONFIG_HW_RANDOM) += hw_random.o
-obj-$(CONFIG_AMD_PM768) += amd76x_pm.o
-obj-$(CONFIG_BRIQ_PANEL) += briq_panel.o
-
-obj-$(CONFIG_ITE_GPIO) += ite_gpio.o
-obj-$(CONFIG_AU1X00_GPIO) += au1000_gpio.o
-obj-$(CONFIG_AU1X00_USB_TTY) += au1000_usbtty.o
-obj-$(CONFIG_AU1X00_USB_RAW) += au1000_usbraw.o
-obj-$(CONFIG_COBALT_LCD) += lcd.o
-
-obj-$(CONFIG_QIC02_TAPE) += tpqic02.o
-
-subdir-$(CONFIG_FTAPE) += ftape
-subdir-$(CONFIG_DRM_OLD) += drm-4.0
-subdir-$(CONFIG_DRM_NEW) += drm
-subdir-$(CONFIG_PCMCIA) += pcmcia
-subdir-$(CONFIG_AGP) += agp
-
-ifeq ($(CONFIG_FTAPE),y)
-obj-y += ftape/ftape.o
-endif
-
-obj-$(CONFIG_H8) += h8.o
-obj-$(CONFIG_PPDEV) += ppdev.o
-obj-$(CONFIG_DZ) += dz.o
-obj-$(CONFIG_NWBUTTON) += nwbutton.o
-obj-$(CONFIG_NWFLASH) += nwflash.o
-obj-$(CONFIG_SCx200) += scx200.o
-obj-$(CONFIG_SCx200_GPIO) += scx200_gpio.o
-
-# Only one watchdog can succeed. We probe the hardware watchdog
-# drivers first, then the softdog driver. This means if your hardware
-# watchdog dies or is 'borrowed' for some reason the software watchdog
-# still gives you some cover.
-
-obj-$(CONFIG_PCWATCHDOG) += pcwd.o
-obj-$(CONFIG_ACQUIRE_WDT) += acquirewdt.o
-obj-$(CONFIG_ADVANTECH_WDT) += advantechwdt.o
-obj-$(CONFIG_IB700_WDT) += ib700wdt.o
-obj-$(CONFIG_MIXCOMWD) += mixcomwd.o
-obj-$(CONFIG_60XX_WDT) += sbc60xxwdt.o
-obj-$(CONFIG_W83877F_WDT) += w83877f_wdt.o
-obj-$(CONFIG_SC520_WDT) += sc520_wdt.o
-obj-$(CONFIG_WDT) += wdt.o
-obj-$(CONFIG_WDTPCI) += wdt_pci.o
-obj-$(CONFIG_21285_WATCHDOG) += wdt285.o
-obj-$(CONFIG_977_WATCHDOG) += wdt977.o
-obj-$(CONFIG_I810_TCO) += i810-tco.o
-obj-$(CONFIG_MACHZ_WDT) += machzwd.o
-obj-$(CONFIG_SH_WDT) += shwdt.o
-obj-$(CONFIG_EUROTECH_WDT) += eurotechwdt.o
-obj-$(CONFIG_ALIM7101_WDT) += alim7101_wdt.o
-obj-$(CONFIG_ALIM1535_WDT) += alim1535d_wdt.o
-obj-$(CONFIG_INDYDOG) += indydog.o
-obj-$(CONFIG_SC1200_WDT) += sc1200wdt.o
-obj-$(CONFIG_SCx200_WDT) += scx200_wdt.o
-obj-$(CONFIG_WAFER_WDT) += wafer5823wdt.o
-obj-$(CONFIG_SOFT_WATCHDOG) += softdog.o
-obj-$(CONFIG_INDYDOG) += indydog.o
-obj-$(CONFIG_8xx_WDT) += mpc8xx_wdt.o
-
-subdir-$(CONFIG_MWAVE) += mwave
-ifeq ($(CONFIG_MWAVE),y)
- obj-y += mwave/mwave.o
-endif
-
-subdir-$(CONFIG_IPMI_HANDLER) += ipmi
-ifeq ($(CONFIG_IPMI_HANDLER),y)
- obj-y += ipmi/ipmi.o
-endif
-
-include $(TOPDIR)/Rules.make
-
-fastdep:
-
-conmakehash: conmakehash.c
- $(HOSTCC) $(HOSTCFLAGS) -o conmakehash conmakehash.c
-
-consolemap_deftbl.c: $(FONTMAPFILE) conmakehash
- ./conmakehash $(FONTMAPFILE) > consolemap_deftbl.c
-
-consolemap_deftbl.o: consolemap_deftbl.c $(TOPDIR)/include/linux/types.h
-
-.DELETE_ON_ERROR:
-
-defkeymap.c: defkeymap.map
- set -e ; loadkeys --mktable $< | sed -e 's/^static *//' > $@
-
-qtronixmap.c: qtronixmap.map
- set -e ; loadkeys --mktable $< | sed -e 's/^static *//' > $@
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.4.30-xen-sparse/drivers/char/mem.c
--- a/linux-2.4.30-xen-sparse/drivers/char/mem.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,812 +0,0 @@
-/*
- * linux/drivers/char/mem.c
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- *
- * Added devfs support.
- * Jan-11-1998, C. Scott Ananian <cananian@xxxxxxxxxxxxxxxxxxxx>
- * Shared /dev/zero mmaping support, Feb 2000, Kanoj Sarcar <kanoj@xxxxxxx>
- *
- * MODIFIED FOR XEN by Keir Fraser, 10th July 2003.
- * Linux running on Xen has strange semantics for /dev/mem and /dev/kmem!!
- * 1. mmap will not work on /dev/kmem
- * 2. mmap on /dev/mem interprets the 'file offset' as a machine address
- * rather than a physical address.
- * I don't believe anyone sane mmaps /dev/kmem, but /dev/mem is mmapped
- * to get at memory-mapped I/O spaces (eg. the VESA X server does this).
- * For this to work at all we need to expect machine addresses.
- * Reading/writing of /dev/kmem expects kernel virtual addresses, as usual.
- * Reading/writing of /dev/mem expects 'physical addresses' as usual -- this
- * is because /dev/mem can only read/write existing kernel mappings, which
- * will be normal RAM, and we should present pseudo-physical layout for all
- * except I/O (which is the sticky case that mmap is hacked to deal with).
- */
-
-#include <linux/config.h>
-#include <linux/mm.h>
-#include <linux/miscdevice.h>
-#include <linux/tpqic02.h>
-#include <linux/ftape.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/mman.h>
-#include <linux/random.h>
-#include <linux/init.h>
-#include <linux/raw.h>
-#include <linux/tty.h>
-#include <linux/capability.h>
-#include <linux/ptrace.h>
-
-#include <asm/uaccess.h>
-#include <asm/io.h>
-#include <asm/pgalloc.h>
-
-#ifdef CONFIG_I2C
-extern int i2c_init_all(void);
-#endif
-#ifdef CONFIG_FB
-extern void fbmem_init(void);
-#endif
-#ifdef CONFIG_PROM_CONSOLE
-extern void prom_con_init(void);
-#endif
-#ifdef CONFIG_MDA_CONSOLE
-extern void mda_console_init(void);
-#endif
-#if defined(CONFIG_S390_TAPE) && defined(CONFIG_S390_TAPE_CHAR)
-extern void tapechar_init(void);
-#endif
-
-static ssize_t do_write_mem(struct file * file, void *p, unsigned long realp,
- const char * buf, size_t count, loff_t *ppos)
-{
- ssize_t written;
-
- written = 0;
-#if defined(__sparc__) || defined(__mc68000__)
- /* we don't have page 0 mapped on sparc and m68k.. */
- if (realp < PAGE_SIZE) {
- unsigned long sz = PAGE_SIZE-realp;
- if (sz > count) sz = count;
- /* Hmm. Do something? */
- buf+=sz;
- p+=sz;
- count-=sz;
- written+=sz;
- }
-#endif
- if (copy_from_user(p, buf, count))
- return -EFAULT;
- written += count;
- *ppos = realp + written;
- return written;
-}
-
-
-/*
- * This funcion reads the *physical* memory. The f_pos points directly to the
- * memory location.
- */
-static ssize_t read_mem(struct file * file, char * buf,
- size_t count, loff_t *ppos)
-{
- unsigned long p = *ppos;
- unsigned long end_mem;
- ssize_t read;
-
- end_mem = __pa(high_memory);
- if (p >= end_mem)
- return 0;
- if (count > end_mem - p)
- count = end_mem - p;
- read = 0;
-#if defined(__sparc__) || defined(__mc68000__)
- /* we don't have page 0 mapped on sparc and m68k.. */
- if (p < PAGE_SIZE) {
- unsigned long sz = PAGE_SIZE-p;
- if (sz > count)
- sz = count;
- if (sz > 0) {
- if (clear_user(buf, sz))
- return -EFAULT;
- buf += sz;
- p += sz;
- count -= sz;
- read += sz;
- }
- }
-#endif
- if (copy_to_user(buf, __va(p), count))
- return -EFAULT;
- read += count;
- *ppos = p + read;
- return read;
-}
-
-static ssize_t write_mem(struct file * file, const char * buf,
- size_t count, loff_t *ppos)
-{
- unsigned long p = *ppos;
- unsigned long end_mem;
-
- end_mem = __pa(high_memory);
- if (p >= end_mem)
- return 0;
- if (count > end_mem - p)
- count = end_mem - p;
- return do_write_mem(file, __va(p), p, buf, count, ppos);
-}
-
-#ifndef pgprot_noncached
-
-/*
- * This should probably be per-architecture in <asm/pgtable.h>
- */
-static inline pgprot_t pgprot_noncached(pgprot_t _prot)
-{
- unsigned long prot = pgprot_val(_prot);
-
-#if defined(__i386__) || defined(__x86_64__)
- /* On PPro and successors, PCD alone doesn't always mean
- uncached because of interactions with the MTRRs. PCD | PWT
- means definitely uncached. */
- if (boot_cpu_data.x86 > 3)
- prot |= _PAGE_PCD | _PAGE_PWT;
-#elif defined(__powerpc__)
- prot |= _PAGE_NO_CACHE | _PAGE_GUARDED;
-#elif defined(__mc68000__)
-#ifdef SUN3_PAGE_NOCACHE
- if (MMU_IS_SUN3)
- prot |= SUN3_PAGE_NOCACHE;
- else
-#endif
- if (MMU_IS_851 || MMU_IS_030)
- prot |= _PAGE_NOCACHE030;
- /* Use no-cache mode, serialized */
- else if (MMU_IS_040 || MMU_IS_060)
- prot = (prot & _CACHEMASK040) | _PAGE_NOCACHE_S;
-#endif
-
- return __pgprot(prot);
-}
-
-#endif /* !pgprot_noncached */
-
-/*
- * Architectures vary in how they handle caching for addresses
- * outside of main memory.
- */
-static inline int noncached_address(unsigned long addr)
-{
-#if defined(__i386__)
- /*
- * On the PPro and successors, the MTRRs are used to set
- * memory types for physical addresses outside main memory,
- * so blindly setting PCD or PWT on those pages is wrong.
- * For Pentiums and earlier, the surround logic should disable
- * caching for the high addresses through the KEN pin, but
- * we maintain the tradition of paranoia in this code.
- */
- return !( test_bit(X86_FEATURE_MTRR, &boot_cpu_data.x86_capability) ||
- test_bit(X86_FEATURE_K6_MTRR, &boot_cpu_data.x86_capability)
||
- test_bit(X86_FEATURE_CYRIX_ARR,
&boot_cpu_data.x86_capability) ||
- test_bit(X86_FEATURE_CENTAUR_MCR,
&boot_cpu_data.x86_capability) )
- && addr >= __pa(high_memory);
-#else
- return addr >= __pa(high_memory);
-#endif
-}
-
-#if !defined(CONFIG_XEN)
-static int mmap_mem(struct file * file, struct vm_area_struct * vma)
-{
- unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
-
- /*
- * Accessing memory above the top the kernel knows about or
- * through a file pointer that was marked O_SYNC will be
- * done non-cached.
- */
- if (noncached_address(offset) || (file->f_flags & O_SYNC))
- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-
- /* Don't try to swap out physical pages.. */
- vma->vm_flags |= VM_RESERVED;
-
- /*
- * Don't dump addresses that are not real memory to a core file.
- */
- if (offset >= __pa(high_memory) || (file->f_flags & O_SYNC))
- vma->vm_flags |= VM_IO;
-
- if (remap_page_range(vma->vm_start, offset, vma->vm_end-vma->vm_start,
- vma->vm_page_prot))
- return -EAGAIN;
- return 0;
-}
-#elif !defined(CONFIG_XEN_PRIVILEGED_GUEST)
-static int mmap_mem(struct file * file, struct vm_area_struct * vma)
-{
- return -ENXIO;
-}
-#else
-static int mmap_mem(struct file * file, struct vm_area_struct * vma)
-{
- unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
-
- if (!(xen_start_info.flags & SIF_PRIVILEGED))
- return -ENXIO;
-
- /* DONTCOPY is essential for Xen as copy_page_range is broken. */
- vma->vm_flags |= VM_RESERVED | VM_IO | VM_DONTCOPY;
- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
- if (direct_remap_area_pages(vma->vm_mm, vma->vm_start, offset,
- vma->vm_end-vma->vm_start, vma->vm_page_prot,
- DOMID_IO))
- return -EAGAIN;
- return 0;
-}
-#endif /* CONFIG_XEN */
-
-/*
- * This function reads the *virtual* memory as seen by the kernel.
- */
-static ssize_t read_kmem(struct file *file, char *buf,
- size_t count, loff_t *ppos)
-{
- unsigned long p = *ppos;
- ssize_t read = 0;
- ssize_t virtr = 0;
- char * kbuf; /* k-addr because vread() takes vmlist_lock rwlock */
-
- if (p < (unsigned long) high_memory) {
- read = count;
- if (count > (unsigned long) high_memory - p)
- read = (unsigned long) high_memory - p;
-
-#if defined(__sparc__) || defined(__mc68000__)
- /* we don't have page 0 mapped on sparc and m68k.. */
- if (p < PAGE_SIZE && read > 0) {
- size_t tmp = PAGE_SIZE - p;
- if (tmp > read) tmp = read;
- if (clear_user(buf, tmp))
- return -EFAULT;
- buf += tmp;
- p += tmp;
- read -= tmp;
- count -= tmp;
- }
-#endif
- if (copy_to_user(buf, (char *)p, read))
- return -EFAULT;
- p += read;
- buf += read;
- count -= read;
- }
-
- if (count > 0) {
- kbuf = (char *)__get_free_page(GFP_KERNEL);
- if (!kbuf)
- return -ENOMEM;
- while (count > 0) {
- int len = count;
-
- if (len > PAGE_SIZE)
- len = PAGE_SIZE;
- len = vread(kbuf, (char *)p, len);
- if (!len)
- break;
- if (copy_to_user(buf, kbuf, len)) {
- free_page((unsigned long)kbuf);
- return -EFAULT;
- }
- count -= len;
- buf += len;
- virtr += len;
- p += len;
- }
- free_page((unsigned long)kbuf);
- }
- *ppos = p;
- return virtr + read;
-}
-
-extern long vwrite(char *buf, char *addr, unsigned long count);
-
-/*
- * This function writes to the *virtual* memory as seen by the kernel.
- */
-static ssize_t write_kmem(struct file * file, const char * buf,
- size_t count, loff_t *ppos)
-{
- unsigned long p = *ppos;
- ssize_t wrote = 0;
- ssize_t virtr = 0;
- char * kbuf; /* k-addr because vwrite() takes vmlist_lock rwlock */
-
- if (p < (unsigned long) high_memory) {
- wrote = count;
- if (count > (unsigned long) high_memory - p)
- wrote = (unsigned long) high_memory - p;
-
- wrote = do_write_mem(file, (void*)p, p, buf, wrote, ppos);
-
- p += wrote;
- buf += wrote;
- count -= wrote;
- }
-
- if (count > 0) {
- kbuf = (char *)__get_free_page(GFP_KERNEL);
- if (!kbuf)
- return -ENOMEM;
- while (count > 0) {
- int len = count;
-
- if (len > PAGE_SIZE)
- len = PAGE_SIZE;
- if (len && copy_from_user(kbuf, buf, len)) {
- free_page((unsigned long)kbuf);
- return -EFAULT;
- }
- len = vwrite(kbuf, (char *)p, len);
- count -= len;
- buf += len;
- virtr += len;
- p += len;
- }
- free_page((unsigned long)kbuf);
- }
-
- *ppos = p;
- return virtr + wrote;
-}
-
-#if defined(CONFIG_ISA) || !defined(__mc68000__)
-static ssize_t read_port(struct file * file, char * buf,
- size_t count, loff_t *ppos)
-{
- unsigned long i = *ppos;
- char *tmp = buf;
-
- if (verify_area(VERIFY_WRITE,buf,count))
- return -EFAULT;
- while (count-- > 0 && i < 65536) {
- if (__put_user(inb(i),tmp) < 0)
- return -EFAULT;
- i++;
- tmp++;
- }
- *ppos = i;
- return tmp-buf;
-}
-
-static ssize_t write_port(struct file * file, const char * buf,
- size_t count, loff_t *ppos)
-{
- unsigned long i = *ppos;
- const char * tmp = buf;
-
- if (verify_area(VERIFY_READ,buf,count))
- return -EFAULT;
- while (count-- > 0 && i < 65536) {
- char c;
- if (__get_user(c, tmp))
- return -EFAULT;
- outb(c,i);
- i++;
- tmp++;
- }
- *ppos = i;
- return tmp-buf;
-}
-#endif
-
-static ssize_t read_null(struct file * file, char * buf,
- size_t count, loff_t *ppos)
-{
- return 0;
-}
-
-static ssize_t write_null(struct file * file, const char * buf,
- size_t count, loff_t *ppos)
-{
- return count;
-}
-
-/*
- * For fun, we are using the MMU for this.
- */
-static inline size_t read_zero_pagealigned(char * buf, size_t size)
-{
- struct mm_struct *mm;
- struct vm_area_struct * vma;
- unsigned long addr=(unsigned long)buf;
-
- mm = current->mm;
- /* Oops, this was forgotten before. -ben */
- down_read(&mm->mmap_sem);
-
- /* For private mappings, just map in zero pages. */
- for (vma = find_vma(mm, addr); vma; vma = vma->vm_next) {
- unsigned long count;
-
- if (vma->vm_start > addr || (vma->vm_flags & VM_WRITE) == 0)
- goto out_up;
- if (vma->vm_flags & VM_SHARED)
- break;
- count = vma->vm_end - addr;
- if (count > size)
- count = size;
-
- zap_page_range(mm, addr, count);
- zeromap_page_range(addr, count, PAGE_COPY);
-
- size -= count;
- buf += count;
- addr += count;
- if (size == 0)
- goto out_up;
- }
-
- up_read(&mm->mmap_sem);
-
- /* The shared case is hard. Let's do the conventional zeroing. */
- do {
- unsigned long unwritten = clear_user(buf, PAGE_SIZE);
- if (unwritten)
- return size + unwritten - PAGE_SIZE;
- if (current->need_resched)
- schedule();
- buf += PAGE_SIZE;
- size -= PAGE_SIZE;
- } while (size);
-
- return size;
-out_up:
- up_read(&mm->mmap_sem);
- return size;
-}
-
-static ssize_t read_zero(struct file * file, char * buf,
- size_t count, loff_t *ppos)
-{
- unsigned long left, unwritten, written = 0;
-
- if (!count)
- return 0;
-
- if (!access_ok(VERIFY_WRITE, buf, count))
- return -EFAULT;
-
- left = count;
-
- /* do we want to be clever? Arbitrary cut-off */
- if (count >= PAGE_SIZE*4) {
- unsigned long partial;
-
- /* How much left of the page? */
- partial = (PAGE_SIZE-1) & -(unsigned long) buf;
- unwritten = clear_user(buf, partial);
- written = partial - unwritten;
- if (unwritten)
- goto out;
- left -= partial;
- buf += partial;
- unwritten = read_zero_pagealigned(buf, left & PAGE_MASK);
- written += (left & PAGE_MASK) - unwritten;
- if (unwritten)
- goto out;
- buf += left & PAGE_MASK;
- left &= ~PAGE_MASK;
- }
- unwritten = clear_user(buf, left);
- written += left - unwritten;
-out:
- return written ? written : -EFAULT;
-}
-
-static int mmap_zero(struct file * file, struct vm_area_struct * vma)
-{
- if (vma->vm_flags & VM_SHARED)
- return shmem_zero_setup(vma);
- if (zeromap_page_range(vma->vm_start, vma->vm_end - vma->vm_start,
vma->vm_page_prot))
- return -EAGAIN;
- return 0;
-}
-
-static ssize_t write_full(struct file * file, const char * buf,
- size_t count, loff_t *ppos)
-{
- return -ENOSPC;
-}
-
-/*
- * Special lseek() function for /dev/null and /dev/zero. Most notably, you
- * can fopen() both devices with "a" now. This was previously impossible.
- * -- SRB.
- */
-
-static loff_t null_lseek(struct file * file, loff_t offset, int orig)
-{
- return file->f_pos = 0;
-}
-
-/*
- * The memory devices use the full 32/64 bits of the offset, and so we cannot
- * check against negative addresses: they are ok. The return value is weird,
- * though, in that case (0).
- *
- * also note that seeking relative to the "end of file" isn't supported:
- * it has no meaning, so it returns -EINVAL.
- */
-static loff_t memory_lseek(struct file * file, loff_t offset, int orig)
-{
- loff_t ret;
-
- switch (orig) {
- case 0:
- file->f_pos = offset;
- ret = file->f_pos;
- force_successful_syscall_return();
- break;
- case 1:
- file->f_pos += offset;
- ret = file->f_pos;
- force_successful_syscall_return();
- break;
- default:
- ret = -EINVAL;
- }
- return ret;
-}
-
-static int open_port(struct inode * inode, struct file * filp)
-{
- return capable(CAP_SYS_RAWIO) ? 0 : -EPERM;
-}
-
-struct page *kmem_vm_nopage(struct vm_area_struct *vma, unsigned long address,
int write)
-{
- unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
- unsigned long kaddr;
- pgd_t *pgd;
- pmd_t *pmd;
- pte_t *ptep, pte;
- struct page *page = NULL;
-
- /* address is user VA; convert to kernel VA of desired page */
- kaddr = (address - vma->vm_start) + offset;
- kaddr = VMALLOC_VMADDR(kaddr);
-
- spin_lock(&init_mm.page_table_lock);
-
- /* Lookup page structure for kernel VA */
- pgd = pgd_offset(&init_mm, kaddr);
- if (pgd_none(*pgd) || pgd_bad(*pgd))
- goto out;
- pmd = pmd_offset(pgd, kaddr);
- if (pmd_none(*pmd) || pmd_bad(*pmd))
- goto out;
- ptep = pte_offset(pmd, kaddr);
- if (!ptep)
- goto out;
- pte = *ptep;
- if (!pte_present(pte))
- goto out;
- if (write && !pte_write(pte))
- goto out;
- page = pte_page(pte);
- if (!VALID_PAGE(page)) {
- page = NULL;
- goto out;
- }
-
- /* Increment reference count on page */
- get_page(page);
-
-out:
- spin_unlock(&init_mm.page_table_lock);
-
- return page;
-}
-
-struct vm_operations_struct kmem_vm_ops = {
- nopage: kmem_vm_nopage,
-};
-
-static int mmap_kmem(struct file * file, struct vm_area_struct * vma)
-{
- unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
- unsigned long size = vma->vm_end - vma->vm_start;
-
- /*
- * If the user is not attempting to mmap a high memory address then
- * the standard mmap_mem mechanism will work. High memory addresses
- * need special handling, as remap_page_range expects a physically-
- * contiguous range of kernel addresses (such as obtained in kmalloc).
- */
- if ((offset + size) < (unsigned long) high_memory)
- return mmap_mem(file, vma);
-
- /*
- * Accessing memory above the top the kernel knows about or
- * through a file pointer that was marked O_SYNC will be
- * done non-cached.
- */
- if (noncached_address(offset) || (file->f_flags & O_SYNC))
- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-
- /* Don't do anything here; "nopage" will fill the holes */
- vma->vm_ops = &kmem_vm_ops;
-
- /* Don't try to swap out physical pages.. */
- vma->vm_flags |= VM_RESERVED;
-
- /*
- * Don't dump addresses that are not real memory to a core file.
- */
- vma->vm_flags |= VM_IO;
-
- return 0;
-}
-
-#define zero_lseek null_lseek
-#define full_lseek null_lseek
-#define write_zero write_null
-#define read_full read_zero
-#define open_mem open_port
-#define open_kmem open_mem
-
-static struct file_operations mem_fops = {
- llseek: memory_lseek,
- read: read_mem,
- write: write_mem,
- mmap: mmap_mem,
- open: open_mem,
-};
-
-static struct file_operations kmem_fops = {
- llseek: memory_lseek,
- read: read_kmem,
- write: write_kmem,
-#if !defined(CONFIG_XEN)
- mmap: mmap_kmem,
-#endif
- open: open_kmem,
-};
-
-static struct file_operations null_fops = {
- llseek: null_lseek,
- read: read_null,
- write: write_null,
-};
-
-#if defined(CONFIG_ISA) || !defined(__mc68000__)
-static struct file_operations port_fops = {
- llseek: memory_lseek,
- read: read_port,
- write: write_port,
- open: open_port,
-};
-#endif
-
-static struct file_operations zero_fops = {
- llseek: zero_lseek,
- read: read_zero,
- write: write_zero,
- mmap: mmap_zero,
-};
-
-static struct file_operations full_fops = {
- llseek: full_lseek,
- read: read_full,
- write: write_full,
-};
-
-static int memory_open(struct inode * inode, struct file * filp)
-{
- switch (MINOR(inode->i_rdev)) {
- case 1:
- filp->f_op = &mem_fops;
- break;
- case 2:
- filp->f_op = &kmem_fops;
- break;
- case 3:
- filp->f_op = &null_fops;
- break;
-#if defined(CONFIG_ISA) || !defined(__mc68000__)
- case 4:
- filp->f_op = &port_fops;
- break;
-#endif
- case 5:
- filp->f_op = &zero_fops;
- break;
- case 7:
- filp->f_op = &full_fops;
- break;
- case 8:
- filp->f_op = &random_fops;
- break;
- case 9:
- filp->f_op = &urandom_fops;
- break;
- default:
- return -ENXIO;
- }
- if (filp->f_op && filp->f_op->open)
- return filp->f_op->open(inode,filp);
- return 0;
-}
-
-void __init memory_devfs_register (void)
-{
- /* These are never unregistered */
- static const struct {
- unsigned short minor;
- char *name;
- umode_t mode;
- struct file_operations *fops;
- } list[] = { /* list of minor devices */
- {1, "mem", S_IRUSR | S_IWUSR | S_IRGRP, &mem_fops},
- {2, "kmem", S_IRUSR | S_IWUSR | S_IRGRP, &kmem_fops},
- {3, "null", S_IRUGO | S_IWUGO, &null_fops},
-#if defined(CONFIG_ISA) || !defined(__mc68000__)
- {4, "port", S_IRUSR | S_IWUSR | S_IRGRP, &port_fops},
-#endif
- {5, "zero", S_IRUGO | S_IWUGO, &zero_fops},
- {7, "full", S_IRUGO | S_IWUGO, &full_fops},
- {8, "random", S_IRUGO | S_IWUSR, &random_fops},
- {9, "urandom", S_IRUGO | S_IWUSR, &urandom_fops}
- };
- int i;
-
- for (i=0; i<(sizeof(list)/sizeof(*list)); i++)
- devfs_register (NULL, list[i].name, DEVFS_FL_NONE,
- MEM_MAJOR, list[i].minor,
- list[i].mode | S_IFCHR,
- list[i].fops, NULL);
-}
-
-static struct file_operations memory_fops = {
- open: memory_open, /* just a selector for the real open */
-};
-
-int __init chr_dev_init(void)
-{
- if (devfs_register_chrdev(MEM_MAJOR,"mem",&memory_fops))
- printk("unable to get major %d for memory devs\n", MEM_MAJOR);
- memory_devfs_register();
- rand_initialize();
-#ifdef CONFIG_I2C
- i2c_init_all();
-#endif
-#if defined (CONFIG_FB)
- fbmem_init();
-#endif
-#if defined (CONFIG_PROM_CONSOLE)
- prom_con_init();
-#endif
-#if defined (CONFIG_MDA_CONSOLE)
- mda_console_init();
-#endif
- tty_init();
-#ifdef CONFIG_M68K_PRINTER
- lp_m68k_init();
-#endif
- misc_init();
-#if CONFIG_QIC02_TAPE
- qic02_tape_init();
-#endif
-#ifdef CONFIG_FTAPE
- ftape_init();
-#endif
-#if defined(CONFIG_S390_TAPE) && defined(CONFIG_S390_TAPE_CHAR)
- tapechar_init();
-#endif
- return 0;
-}
-
-__initcall(chr_dev_init);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/drivers/char/tty_io.c
--- a/linux-2.4.30-xen-sparse/drivers/char/tty_io.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,2891 +0,0 @@
-/*
- * linux/drivers/char/tty_io.c
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- */
-
-/*
- * 'tty_io.c' gives an orthogonal feeling to tty's, be they consoles
- * or rs-channels. It also implements echoing, cooked mode etc.
- *
- * Kill-line thanks to John T Kohl, who also corrected VMIN = VTIME = 0.
- *
- * Modified by Theodore Ts'o, 9/14/92, to dynamically allocate the
- * tty_struct and tty_queue structures. Previously there was an array
- * of 256 tty_struct's which was statically allocated, and the
- * tty_queue structures were allocated at boot time. Both are now
- * dynamically allocated only when the tty is open.
- *
- * Also restructured routines so that there is more of a separation
- * between the high-level tty routines (tty_io.c and tty_ioctl.c) and
- * the low-level tty routines (serial.c, pty.c, console.c). This
- * makes for cleaner and more compact code. -TYT, 9/17/92
- *
- * Modified by Fred N. van Kempen, 01/29/93, to add line disciplines
- * which can be dynamically activated and de-activated by the line
- * discipline handling modules (like SLIP).
- *
- * NOTE: pay no attention to the line discipline code (yet); its
- * interface is still subject to change in this version...
- * -- TYT, 1/31/92
- *
- * Added functionality to the OPOST tty handling. No delays, but all
- * other bits should be there.
- * -- Nick Holloway <alfie@xxxxxxxxxxxxxxxxx>, 27th May 1993.
- *
- * Rewrote canonical mode and added more termios flags.
- * -- julian@xxxxxxxxxxxxxxxxxxxxxx (J. Cowley), 13Jan94
- *
- * Reorganized FASYNC support so mouse code can share it.
- * -- ctm@xxxxxxxx, 9Sep95
- *
- * New TIOCLINUX variants added.
- * -- mj@xxxxxxxxxxxxxxxxx, 19-Nov-95
- *
- * Restrict vt switching via ioctl()
- * -- grif@xxxxxxxxxx, 5-Dec-95
- *
- * Move console and virtual terminal code to more appropriate files,
- * implement CONFIG_VT and generalize console device interface.
- * -- Marko Kohtala <Marko.Kohtala@xxxxxx>, March 97
- *
- * Rewrote init_dev and release_dev to eliminate races.
- * -- Bill Hawes <whawes@xxxxxxxx>, June 97
- *
- * Added devfs support.
- * -- C. Scott Ananian <cananian@xxxxxxxxxxxxxxxxxxxx>, 13-Jan-1998
- *
- * Added support for a Unix98-style ptmx device.
- * -- C. Scott Ananian <cananian@xxxxxxxxxxxxxxxxxxxx>, 14-Jan-1998
- *
- * Reduced memory usage for older ARM systems
- * -- Russell King <rmk@xxxxxxxxxxxxxxxx>
- *
- * Move do_SAK() into process context. Less stack use in devfs functions.
- * alloc_tty_struct() always uses kmalloc() -- Andrew Morton
<andrewm@xxxxxxxxxx> 17Mar01
- */
-
-#include <linux/config.h>
-#include <linux/types.h>
-#include <linux/major.h>
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/fcntl.h>
-#include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <linux/tty.h>
-#include <linux/tty_driver.h>
-#include <linux/tty_flip.h>
-#include <linux/devpts_fs.h>
-#include <linux/file.h>
-#include <linux/console.h>
-#include <linux/timer.h>
-#include <linux/ctype.h>
-#include <linux/kd.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/poll.h>
-#include <linux/proc_fs.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/smp_lock.h>
-
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#include <asm/bitops.h>
-
-#include <linux/kbd_kern.h>
-#include <linux/vt_kern.h>
-#include <linux/selection.h>
-#include <linux/devfs_fs_kernel.h>
-
-#include <linux/kmod.h>
-
-#ifdef CONFIG_XEN_CONSOLE
-extern void xen_console_init(void);
-#endif
-
-#ifdef CONFIG_VT
-extern void con_init_devfs (void);
-#endif
-
-extern void disable_early_printk(void);
-
-#define CONSOLE_DEV MKDEV(TTY_MAJOR,0)
-#define TTY_DEV MKDEV(TTYAUX_MAJOR,0)
-#define SYSCONS_DEV MKDEV(TTYAUX_MAJOR,1)
-#define PTMX_DEV MKDEV(TTYAUX_MAJOR,2)
-
-#undef TTY_DEBUG_HANGUP
-
-#define TTY_PARANOIA_CHECK 1
-#define CHECK_TTY_COUNT 1
-
-struct termios tty_std_termios; /* for the benefit of tty
drivers */
-struct tty_driver *tty_drivers; /* linked list of tty drivers */
-
-#ifdef CONFIG_UNIX98_PTYS
-extern struct tty_driver ptm_driver[]; /* Unix98 pty masters; for /dev/ptmx */
-extern struct tty_driver pts_driver[]; /* Unix98 pty slaves; for /dev/ptmx */
-#endif
-
-static void initialize_tty_struct(struct tty_struct *tty);
-
-static ssize_t tty_read(struct file *, char *, size_t, loff_t *);
-static ssize_t tty_write(struct file *, const char *, size_t, loff_t *);
-static unsigned int tty_poll(struct file *, poll_table *);
-static int tty_open(struct inode *, struct file *);
-static int tty_release(struct inode *, struct file *);
-int tty_ioctl(struct inode * inode, struct file * file,
- unsigned int cmd, unsigned long arg);
-static int tty_fasync(int fd, struct file * filp, int on);
-extern int vme_scc_init (void);
-extern long vme_scc_console_init(void);
-extern int serial167_init(void);
-extern long serial167_console_init(void);
-extern void console_8xx_init(void);
-extern void au1x00_serial_console_init(void);
-extern int rs_8xx_init(void);
-extern void mac_scc_console_init(void);
-extern void hwc_console_init(void);
-extern void hwc_tty_init(void);
-extern void con3215_init(void);
-extern void tty3215_init(void);
-extern void tub3270_con_init(void);
-extern void tub3270_init(void);
-extern void rs285_console_init(void);
-extern void sa1100_rs_console_init(void);
-extern void sgi_serial_console_init(void);
-extern void sn_sal_serial_console_init(void);
-extern void sci_console_init(void);
-extern void dec_serial_console_init(void);
-extern void tx3912_console_init(void);
-extern void tx3912_rs_init(void);
-extern void txx927_console_init(void);
-extern void txx9_rs_init(void);
-extern void txx9_serial_console_init(void);
-extern void sb1250_serial_console_init(void);
-extern void arc_console_init(void);
-extern int hvc_console_init(void);
-
-#ifndef MIN
-#define MIN(a,b) ((a) < (b) ? (a) : (b))
-#endif
-#ifndef MAX
-#define MAX(a,b) ((a) < (b) ? (b) : (a))
-#endif
-
-static struct tty_struct *alloc_tty_struct(void)
-{
- struct tty_struct *tty;
-
- tty = kmalloc(sizeof(struct tty_struct), GFP_KERNEL);
- if (tty)
- memset(tty, 0, sizeof(struct tty_struct));
- return tty;
-}
-
-static inline void free_tty_struct(struct tty_struct *tty)
-{
- kfree(tty);
-}
-
-/*
- * This routine returns the name of tty.
- */
-static char *
-_tty_make_name(struct tty_struct *tty, const char *name, char *buf)
-{
- int idx = (tty)?MINOR(tty->device) - tty->driver.minor_start:0;
-
- if (!tty) /* Hmm. NULL pointer. That's fun. */
- strcpy(buf, "NULL tty");
- else
- sprintf(buf, name,
- idx + tty->driver.name_base);
-
- return buf;
-}
-
-#define TTY_NUMBER(tty) (MINOR((tty)->device) - (tty)->driver.minor_start + \
- (tty)->driver.name_base)
-
-char *tty_name(struct tty_struct *tty, char *buf)
-{
- return _tty_make_name(tty, (tty)?tty->driver.name:NULL, buf);
-}
-
-inline int tty_paranoia_check(struct tty_struct *tty, kdev_t device,
- const char *routine)
-{
-#ifdef TTY_PARANOIA_CHECK
- static const char badmagic[] = KERN_WARNING
- "Warning: bad magic number for tty struct (%s) in %s\n";
- static const char badtty[] = KERN_WARNING
- "Warning: null TTY for (%s) in %s\n";
-
- if (!tty) {
- printk(badtty, kdevname(device), routine);
- return 1;
- }
- if (tty->magic != TTY_MAGIC) {
- printk(badmagic, kdevname(device), routine);
- return 1;
- }
-#endif
- return 0;
-}
-
-static int check_tty_count(struct tty_struct *tty, const char *routine)
-{
-#ifdef CHECK_TTY_COUNT
- struct list_head *p;
- int count = 0;
-
- file_list_lock();
- for(p = tty->tty_files.next; p != &tty->tty_files; p = p->next) {
- if(list_entry(p, struct file, f_list)->private_data == tty)
- count++;
- }
- file_list_unlock();
- if (tty->driver.type == TTY_DRIVER_TYPE_PTY &&
- tty->driver.subtype == PTY_TYPE_SLAVE &&
- tty->link && tty->link->count)
- count++;
- if (tty->count != count) {
- printk(KERN_WARNING "Warning: dev (%s) tty->count(%d) "
- "!= #fd's(%d) in %s\n",
- kdevname(tty->device), tty->count, count, routine);
- return count;
- }
-#endif
- return 0;
-}
-
-/*
- * This is probably overkill for real world processors but
- * they are not on hot paths so a little discipline won't do
- * any harm.
- */
-
-static void tty_set_termios_ldisc(struct tty_struct *tty, int num)
-{
- down(&tty->termios_sem);
- tty->termios->c_line = num;
- up(&tty->termios_sem);
-}
-
-/*
- * This guards the refcounted line discipline lists. The lock
- * must be taken with irqs off because there are hangup path
- * callers who will do ldisc lookups and cannot sleep.
- */
-
-spinlock_t tty_ldisc_lock = SPIN_LOCK_UNLOCKED;
-DECLARE_WAIT_QUEUE_HEAD(tty_ldisc_wait);
-struct tty_ldisc tty_ldiscs[NR_LDISCS]; /* line disc dispatch table */
-
-int tty_register_ldisc(int disc, struct tty_ldisc *new_ldisc)
-{
-
- unsigned long flags;
- int ret = 0;
-
- if (disc < N_TTY || disc >= NR_LDISCS)
- return -EINVAL;
-
- spin_lock_irqsave(&tty_ldisc_lock, flags);
- if (new_ldisc) {
- tty_ldiscs[disc] = *new_ldisc;
- tty_ldiscs[disc].num = disc;
- tty_ldiscs[disc].flags |= LDISC_FLAG_DEFINED;
- tty_ldiscs[disc].refcount = 0;
- } else {
- if(tty_ldiscs[disc].refcount)
- ret = -EBUSY;
- else
- tty_ldiscs[disc].flags &= ~LDISC_FLAG_DEFINED;
- }
- spin_unlock_irqrestore(&tty_ldisc_lock, flags);
-
- return ret;
-
-}
-
-
-EXPORT_SYMBOL(tty_register_ldisc);
-
-struct tty_ldisc *tty_ldisc_get(int disc)
-{
- unsigned long flags;
- struct tty_ldisc *ld;
-
- if (disc < N_TTY || disc >= NR_LDISCS)
- return NULL;
-
- spin_lock_irqsave(&tty_ldisc_lock, flags);
-
- ld = &tty_ldiscs[disc];
- /* Check the entry is defined */
- if(ld->flags & LDISC_FLAG_DEFINED)
- ld->refcount++;
- else
- ld = NULL;
- spin_unlock_irqrestore(&tty_ldisc_lock, flags);
- return ld;
-}
-
-EXPORT_SYMBOL_GPL(tty_ldisc_get);
-
-void tty_ldisc_put(int disc)
-{
- struct tty_ldisc *ld;
- unsigned long flags;
-
- if (disc < N_TTY || disc >= NR_LDISCS)
- BUG();
-
- spin_lock_irqsave(&tty_ldisc_lock, flags);
- ld = &tty_ldiscs[disc];
- if(ld->refcount <= 0)
- BUG();
- ld->refcount--;
- spin_unlock_irqrestore(&tty_ldisc_lock, flags);
-}
-
-EXPORT_SYMBOL_GPL(tty_ldisc_put);
-
-void tty_ldisc_assign(struct tty_struct *tty, struct tty_ldisc *ld)
-{
- tty->ldisc = *ld;
- tty->ldisc.refcount = 0;
-}
-
-/**
- * tty_ldisc_try - internal helper
- * @tty: the tty
- *
- * Make a single attempt to grab and bump the refcount on
- * the tty ldisc. Return 0 on failure or 1 on success. This is
- * used to implement both the waiting and non waiting versions
- * of tty_ldisc_ref
- */
-
-static int tty_ldisc_try(struct tty_struct *tty)
-{
- unsigned long flags;
- struct tty_ldisc *ld;
- int ret = 0;
-
- spin_lock_irqsave(&tty_ldisc_lock, flags);
- ld = &tty->ldisc;
- if(test_bit(TTY_LDISC, &tty->flags))
- {
- ld->refcount++;
- ret = 1;
- }
- spin_unlock_irqrestore(&tty_ldisc_lock, flags);
- return ret;
-}
-
-/**
- * tty_ldisc_ref_wait - wait for the tty ldisc
- * @tty: tty device
- *
- * Dereference the line discipline for the terminal and take a
- * reference to it. If the line discipline is in flux then
- * wait patiently until it changes.
- *
- * Note: Must not be called from an IRQ/timer context. The caller
- * must also be careful not to hold other locks that will deadlock
- * against a discipline change, such as an existing ldisc reference
- * (which we check for)
- */
-
-struct tty_ldisc *tty_ldisc_ref_wait(struct tty_struct *tty)
-{
- /* wait_event is a macro */
- wait_event(tty_ldisc_wait, tty_ldisc_try(tty));
- return &tty->ldisc;
-}
-
-EXPORT_SYMBOL_GPL(tty_ldisc_ref_wait);
-
-/**
- * tty_ldisc_ref - get the tty ldisc
- * @tty: tty device
- *
- * Dereference the line discipline for the terminal and take a
- * reference to it. If the line discipline is in flux then
- * return NULL. Can be called from IRQ and timer functions.
- */
-
-struct tty_ldisc *tty_ldisc_ref(struct tty_struct *tty)
-{
- if(tty_ldisc_try(tty))
- return &tty->ldisc;
- return NULL;
-}
-
-EXPORT_SYMBOL_GPL(tty_ldisc_ref);
-
-
-void tty_ldisc_deref(struct tty_ldisc *ld)
-{
-
- unsigned long flags;
-
- if(ld == NULL)
- BUG();
-
- spin_lock_irqsave(&tty_ldisc_lock, flags);
- if(ld->refcount == 0)
- printk(KERN_EMERG "tty_ldisc_deref: no references.\n");
- else
- ld->refcount--;
- if(ld->refcount == 0)
- wake_up(&tty_ldisc_wait);
- spin_unlock_irqrestore(&tty_ldisc_lock, flags);
-}
-
-EXPORT_SYMBOL_GPL(tty_ldisc_deref);
-
-/**
- * tty_ldisc_enable - allow ldisc use
- * @tty: terminal to activate ldisc on
- *
- * Set the TTY_LDISC flag when the line discipline can be called
- * again. Do neccessary wakeups for existing sleepers.
- *
- * Note: nobody should set this bit except via this function. Clearing
- * directly is allowed.
- */
-
-static void tty_ldisc_enable(struct tty_struct *tty)
-{
- set_bit(TTY_LDISC, &tty->flags);
- wake_up(&tty_ldisc_wait);
-}
-
-/**
- * tty_set_ldisc - set line discipline
- * @tty: the terminal to set
- * @ldisc: the line discipline
- *
- * Set the discipline of a tty line. Must be called from a process
- * context.
- */
-
-static int tty_set_ldisc(struct tty_struct *tty, int ldisc)
-{
- int retval = 0;
- struct tty_ldisc o_ldisc;
- char buf[64];
- unsigned long flags;
- struct tty_ldisc *ld;
-
- if ((ldisc < N_TTY) || (ldisc >= NR_LDISCS))
- return -EINVAL;
-
-restart:
-
- if (tty->ldisc.num == ldisc)
- return 0; /* We are already in the desired discipline */
-
- ld = tty_ldisc_get(ldisc);
- /* Eduardo Blanco <ejbs@xxxxxxxxxxxx> */
- /* Cyrus Durgin <cider@xxxxxxxxxxxxx> */
- if (ld == NULL)
- {
- char modname [20];
- sprintf(modname, "tty-ldisc-%d", ldisc);
- request_module (modname);
- ld = tty_ldisc_get(ldisc);
- }
-
- if (ld == NULL)
- return -EINVAL;
-
-
- o_ldisc = tty->ldisc;
- tty_wait_until_sent(tty, 0);
-
- /*
- * Make sure we don't change while someone holds a
- * reference to the line discipline. The TTY_LDISC bit
- * prevents anyone taking a reference once it is clear.
- * We need the lock to avoid racing reference takers.
- */
-
- spin_lock_irqsave(&tty_ldisc_lock, flags);
- if(tty->ldisc.refcount)
- {
- /* Free the new ldisc we grabbed. Must drop the lock
- first. */
- spin_unlock_irqrestore(&tty_ldisc_lock, flags);
- tty_ldisc_put(ldisc);
- /*
- * There are several reasons we may be busy, including
- * random momentary I/O traffic. We must therefore
- * retry. We could distinguish between blocking ops
- * and retries if we made tty_ldisc_wait() smarter. That
- * is up for discussion.
- */
- if(wait_event_interruptible(tty_ldisc_wait, tty->ldisc.refcount
== 0) < 0)
- return -ERESTARTSYS;
- goto restart;
- }
- clear_bit(TTY_LDISC, &tty->flags);
- clear_bit(TTY_DONT_FLIP, &tty->flags);
- spin_unlock_irqrestore(&tty_ldisc_lock, flags);
-
- /*
- * From this point on we know nobody has an ldisc
- * usage reference, nor can they obtain one until
- * we say so later on.
- */
-
- /*
- * Wait for ->hangup_work and ->flip.work handlers to terminate
- */
- run_task_queue(&tq_timer);
- flush_scheduled_tasks();
-
- /* Shutdown the current discipline. */
- if (tty->ldisc.close)
- (tty->ldisc.close)(tty);
-
- /* Now set up the new line discipline. */
- tty_ldisc_assign(tty, ld);
- tty_set_termios_ldisc(tty, ldisc);
- if (tty->ldisc.open)
- retval = (tty->ldisc.open)(tty);
- if (retval < 0) {
- tty_ldisc_put(ldisc);
- /* There is an outstanding reference here so this is safe */
- tty_ldisc_assign(tty, tty_ldisc_get(o_ldisc.num));
- tty_set_termios_ldisc(tty, tty->ldisc.num);
- if (tty->ldisc.open && (tty->ldisc.open(tty) < 0)) {
- tty_ldisc_put(o_ldisc.num);
- /* This driver is always present */
- tty_ldisc_assign(tty, tty_ldisc_get(N_TTY));
- tty_set_termios_ldisc(tty, N_TTY);
- if (tty->ldisc.open) {
- int r = tty->ldisc.open(tty);
-
- if (r < 0)
- panic("Couldn't open N_TTY ldisc for "
- "%s --- error %d.",
- tty_name(tty, buf), r);
- }
- }
- }
- /* At this point we hold a reference to the new ldisc and a
- reference to the old ldisc. If we ended up flipping back
- to the existing ldisc we have two references to it */
-
- if (tty->ldisc.num != o_ldisc.num && tty->driver.set_ldisc)
- tty->driver.set_ldisc(tty);
-
- tty_ldisc_put(o_ldisc.num);
-
- /*
- * Allow ldisc referencing to occur as soon as the driver
- * ldisc callback completes.
- */
- tty_ldisc_enable(tty);
-
- return retval;
-}
-
-/*
- * This routine returns a tty driver structure, given a device number
- */
-struct tty_driver *get_tty_driver(kdev_t device)
-{
- int major, minor;
- struct tty_driver *p;
-
- minor = MINOR(device);
- major = MAJOR(device);
-
- for (p = tty_drivers; p; p = p->next) {
- if (p->major != major)
- continue;
- if (minor < p->minor_start)
- continue;
- if (minor >= p->minor_start + p->num)
- continue;
- return p;
- }
- return NULL;
-}
-
-/*
- * If we try to write to, or set the state of, a terminal and we're
- * not in the foreground, send a SIGTTOU. If the signal is blocked or
- * ignored, go ahead and perform the operation. (POSIX 7.2)
- */
-int tty_check_change(struct tty_struct * tty)
-{
- if (current->tty != tty)
- return 0;
- if (tty->pgrp <= 0) {
- printk(KERN_WARNING "tty_check_change: tty->pgrp <= 0!\n");
- return 0;
- }
- if (current->pgrp == tty->pgrp)
- return 0;
- if (is_ignored(SIGTTOU))
- return 0;
- if (is_orphaned_pgrp(current->pgrp))
- return -EIO;
- (void) kill_pg(current->pgrp,SIGTTOU,1);
- return -ERESTARTSYS;
-}
-
-static ssize_t hung_up_tty_read(struct file * file, char * buf,
- size_t count, loff_t *ppos)
-{
- /* Can't seek (pread) on ttys. */
- if (ppos != &file->f_pos)
- return -ESPIPE;
- return 0;
-}
-
-static ssize_t hung_up_tty_write(struct file * file, const char * buf,
- size_t count, loff_t *ppos)
-{
- /* Can't seek (pwrite) on ttys. */
- if (ppos != &file->f_pos)
- return -ESPIPE;
- return -EIO;
-}
-
-/* No kernel lock held - none needed ;) */
-static unsigned int hung_up_tty_poll(struct file * filp, poll_table * wait)
-{
- return POLLIN | POLLOUT | POLLERR | POLLHUP | POLLRDNORM | POLLWRNORM;
-}
-
-static int hung_up_tty_ioctl(struct inode * inode, struct file * file,
- unsigned int cmd, unsigned long arg)
-{
- return cmd == TIOCSPGRP ? -ENOTTY : -EIO;
-}
-
-static struct file_operations tty_fops = {
- llseek: no_llseek,
- read: tty_read,
- write: tty_write,
- poll: tty_poll,
- ioctl: tty_ioctl,
- open: tty_open,
- release: tty_release,
- fasync: tty_fasync,
-};
-
-static struct file_operations hung_up_tty_fops = {
- llseek: no_llseek,
- read: hung_up_tty_read,
- write: hung_up_tty_write,
- poll: hung_up_tty_poll,
- ioctl: hung_up_tty_ioctl,
- release: tty_release,
-};
-
-static spinlock_t redirect_lock = SPIN_LOCK_UNLOCKED;
-static struct file *redirect;
-
-/**
- * tty_wakeup - request more data
- * @tty: terminal
- *
- * Internal and external helper for wakeups of tty. This function
- * informs the line discipline if present that the driver is ready\
- * to receive more output data.
- */
-
-void tty_wakeup(struct tty_struct *tty)
-{
- struct tty_ldisc *ld;
-
- if (test_bit(TTY_DO_WRITE_WAKEUP, &tty->flags)) {
- ld = tty_ldisc_ref(tty);
- if(ld) {
- if(ld->write_wakeup)
- ld->write_wakeup(tty);
- tty_ldisc_deref(ld);
- }
- }
- wake_up_interruptible(&tty->write_wait);
-}
-
-/*
- * tty_wakeup/tty_ldisc_flush are actually _GPL exports but we can't do
- * that in 2.4 for modutils compat reasons.
- */
-EXPORT_SYMBOL(tty_wakeup);
-
-
-void tty_ldisc_flush(struct tty_struct *tty)
-{
- struct tty_ldisc *ld = tty_ldisc_ref(tty);
- if(ld) {
- if(ld->flush_buffer)
- ld->flush_buffer(tty);
- tty_ldisc_deref(ld);
- }
-}
-
-
-/*
- * tty_wakeup/tty_ldisc_flush are actually _GPL exports but we can't do
- * that in 2.4 for modutils compat reasons.
- */
-EXPORT_SYMBOL(tty_ldisc_flush);
-
-void do_tty_hangup(void *data)
-{
- struct tty_struct *tty = (struct tty_struct *) data;
- struct file * cons_filp = NULL;
- struct file *f = NULL;
- struct task_struct *p;
- struct list_head *l;
- struct tty_ldisc *ld;
- int closecount = 0, n;
-
- if (!tty)
- return;
-
- /* inuse_filps is protected by the single kernel lock */
- lock_kernel();
-
- spin_lock(&redirect_lock);
- if (redirect && redirect->private_data == tty) {
- f = redirect;
- redirect = NULL;
- }
- spin_unlock(&redirect_lock);
-
- check_tty_count(tty, "do_tty_hangup");
- file_list_lock();
- for (l = tty->tty_files.next; l != &tty->tty_files; l = l->next) {
- struct file * filp = list_entry(l, struct file, f_list);
- if (filp->f_dentry->d_inode->i_rdev == CONSOLE_DEV ||
- filp->f_dentry->d_inode->i_rdev == SYSCONS_DEV) {
- cons_filp = filp;
- continue;
- }
- if (filp->f_op != &tty_fops)
- continue;
- closecount++;
- tty_fasync(-1, filp, 0); /* can't block */
- filp->f_op = &hung_up_tty_fops;
- }
- file_list_unlock();
-
- /* FIXME! What are the locking issues here? This may me overdoing
things.. */
- ld = tty_ldisc_ref(tty);
- if(ld != NULL)
- {
- if (ld->flush_buffer)
- ld->flush_buffer(tty);
- if (tty->driver.flush_buffer)
- tty->driver.flush_buffer(tty);
- if ((test_bit(TTY_DO_WRITE_WAKEUP, &tty->flags)) &&
ld->write_wakeup)
- ld->write_wakeup(tty);
- if (ld->hangup)
- ld->hangup(tty);
- }
-
- /* FIXME: Once we trust the LDISC code better we can wait here for
- ldisc completion and fix the driver call race */
-
- wake_up_interruptible(&tty->write_wait);
- wake_up_interruptible(&tty->read_wait);
-
- /*
- * Shutdown the current line discipline, and reset it to
- * N_TTY.
- */
-
- if (tty->driver.flags & TTY_DRIVER_RESET_TERMIOS)
- {
- down(&tty->termios_sem);
- *tty->termios = tty->driver.init_termios;
- up(&tty->termios_sem);
- }
-
- /* Defer ldisc switch */
- /* tty_deferred_ldisc_switch(N_TTY)
- This should get done automatically when the port closes and
- tty_release is called */
-
- read_lock(&tasklist_lock);
- for_each_task(p) {
- if ((tty->session > 0) && (p->session == tty->session) &&
- p->leader) {
- send_sig(SIGHUP,p,1);
- send_sig(SIGCONT,p,1);
- if (tty->pgrp > 0)
- p->tty_old_pgrp = tty->pgrp;
- }
- if (p->tty == tty)
- p->tty = NULL;
- }
- read_unlock(&tasklist_lock);
-
- tty->flags = 0;
- tty->session = 0;
- tty->pgrp = -1;
- tty->ctrl_status = 0;
- /*
- * If one of the devices matches a console pointer, we
- * cannot just call hangup() because that will cause
- * tty->count and state->count to go out of sync.
- * So we just call close() the right number of times.
- */
- if (cons_filp) {
- if (tty->driver.close)
- for (n = 0; n < closecount; n++)
- tty->driver.close(tty, cons_filp);
- } else if (tty->driver.hangup)
- (tty->driver.hangup)(tty);
-
- /* We don't want to have driver/ldisc interactions beyond
- the ones we did here. The driver layer expects no
- calls after ->hangup() from the ldisc side. However we
- can't yet guarantee all that */
-
- set_bit(TTY_HUPPED, &tty->flags);
- if(ld) {
- tty_ldisc_enable(tty);
- tty_ldisc_deref(ld);
- }
- unlock_kernel();
- if (f)
- fput(f);
-}
-
-void tty_hangup(struct tty_struct * tty)
-{
-#ifdef TTY_DEBUG_HANGUP
- char buf[64];
-
- printk(KERN_DEBUG "%s hangup...\n", tty_name(tty, buf));
-#endif
- schedule_task(&tty->tq_hangup);
-}
-
-void tty_vhangup(struct tty_struct * tty)
-{
-#ifdef TTY_DEBUG_HANGUP
- char buf[64];
-
- printk(KERN_DEBUG "%s vhangup...\n", tty_name(tty, buf));
-#endif
- do_tty_hangup((void *) tty);
-}
-
-int tty_hung_up_p(struct file * filp)
-{
- return (filp->f_op == &hung_up_tty_fops);
-}
-
-/*
- * This function is typically called only by the session leader, when
- * it wants to disassociate itself from its controlling tty.
- *
- * It performs the following functions:
- * (1) Sends a SIGHUP and SIGCONT to the foreground process group
- * (2) Clears the tty from being controlling the session
- * (3) Clears the controlling tty for all processes in the
- * session group.
- *
- * The argument on_exit is set to 1 if called when a process is
- * exiting; it is 0 if called by the ioctl TIOCNOTTY.
- */
-void disassociate_ctty(int on_exit)
-{
- struct tty_struct *tty = current->tty;
- struct task_struct *p;
- int tty_pgrp = -1;
-
- if (tty) {
- tty_pgrp = tty->pgrp;
- if (on_exit && tty->driver.type != TTY_DRIVER_TYPE_PTY)
- tty_vhangup(tty);
- } else {
- if (current->tty_old_pgrp) {
- kill_pg(current->tty_old_pgrp, SIGHUP, on_exit);
- kill_pg(current->tty_old_pgrp, SIGCONT, on_exit);
- }
- return;
- }
- if (tty_pgrp > 0) {
- kill_pg(tty_pgrp, SIGHUP, on_exit);
- if (!on_exit)
- kill_pg(tty_pgrp, SIGCONT, on_exit);
- }
-
- current->tty_old_pgrp = 0;
- tty->session = 0;
- tty->pgrp = -1;
-
- read_lock(&tasklist_lock);
- for_each_task(p)
- if (p->session == current->session)
- p->tty = NULL;
- read_unlock(&tasklist_lock);
-}
-
-void stop_tty(struct tty_struct *tty)
-{
- if (tty->stopped)
- return;
- tty->stopped = 1;
- if (tty->link && tty->link->packet) {
- tty->ctrl_status &= ~TIOCPKT_START;
- tty->ctrl_status |= TIOCPKT_STOP;
- wake_up_interruptible(&tty->link->read_wait);
- }
- if (tty->driver.stop)
- (tty->driver.stop)(tty);
-}
-
-void start_tty(struct tty_struct *tty)
-{
- if (!tty->stopped || tty->flow_stopped)
- return;
- tty->stopped = 0;
- if (tty->link && tty->link->packet) {
- tty->ctrl_status &= ~TIOCPKT_STOP;
- tty->ctrl_status |= TIOCPKT_START;
- wake_up_interruptible(&tty->link->read_wait);
- }
- if (tty->driver.start)
- (tty->driver.start)(tty);
- /* If we have a running line discipline it may need kicking */
- tty_wakeup(tty);
-}
-
-static ssize_t tty_read(struct file * file, char * buf, size_t count,
- loff_t *ppos)
-{
- int i;
- struct tty_struct * tty;
- struct inode *inode;
- struct tty_ldisc *ld;
-
- /* Can't seek (pread) on ttys. */
- if (ppos != &file->f_pos)
- return -ESPIPE;
-
- tty = (struct tty_struct *)file->private_data;
- inode = file->f_dentry->d_inode;
- if (tty_paranoia_check(tty, inode->i_rdev, "tty_read"))
- return -EIO;
- if (!tty || (test_bit(TTY_IO_ERROR, &tty->flags)))
- return -EIO;
-
- /* This check not only needs to be done before reading, but also
- whenever read_chan() gets woken up after sleeping, so I've
- moved it to there. This should only be done for the N_TTY
- line discipline, anyway. Same goes for write_chan(). -- jlc. */
-#if 0
- if ((inode->i_rdev != CONSOLE_DEV) && /* don't stop on /dev/console */
- (tty->pgrp > 0) &&
- (current->tty == tty) &&
- (tty->pgrp != current->pgrp))
- if (is_ignored(SIGTTIN) || is_orphaned_pgrp(current->pgrp))
- return -EIO;
- else {
- (void) kill_pg(current->pgrp, SIGTTIN, 1);
- return -ERESTARTSYS;
- }
-#endif
- /* We want to wait for the line discipline to sort out in this
- situation */
- ld = tty_ldisc_ref_wait(tty);
- lock_kernel();
- if (ld->read)
- i = (ld->read)(tty,file,buf,count);
- else
- i = -EIO;
- tty_ldisc_deref(ld);
- unlock_kernel();
- if (i > 0)
- inode->i_atime = CURRENT_TIME;
- return i;
-}
-
-/*
- * Split writes up in sane blocksizes to avoid
- * denial-of-service type attacks
- */
-static inline ssize_t do_tty_write(
- ssize_t (*write)(struct tty_struct *, struct file *, const unsigned
char *, size_t),
- struct tty_struct *tty,
- struct file *file,
- const unsigned char *buf,
- size_t count)
-{
- ssize_t ret = 0, written = 0;
-
- if (file->f_flags & O_NONBLOCK) {
- if (down_trylock(&tty->atomic_write))
- return -EAGAIN;
- }
- else {
- if (down_interruptible(&tty->atomic_write))
- return -ERESTARTSYS;
- }
- if ( test_bit(TTY_NO_WRITE_SPLIT, &tty->flags) ) {
- lock_kernel();
- written = write(tty, file, buf, count);
- unlock_kernel();
- } else {
- for (;;) {
- unsigned long size = MAX(PAGE_SIZE*2,16384);
- if (size > count)
- size = count;
- lock_kernel();
- ret = write(tty, file, buf, size);
- unlock_kernel();
- if (ret <= 0)
- break;
- written += ret;
- buf += ret;
- count -= ret;
- if (!count)
- break;
- ret = -ERESTARTSYS;
- if (signal_pending(current))
- break;
- if (current->need_resched)
- schedule();
- }
- }
- if (written) {
- file->f_dentry->d_inode->i_mtime = CURRENT_TIME;
- ret = written;
- }
- up(&tty->atomic_write);
- return ret;
-}
-
-
-static ssize_t tty_write(struct file * file, const char * buf, size_t count,
- loff_t *ppos)
-{
- int is_console;
- struct tty_struct * tty;
- struct inode *inode = file->f_dentry->d_inode;
- ssize_t ret;
- struct tty_ldisc *ld;
-
- /* Can't seek (pwrite) on ttys. */
- if (ppos != &file->f_pos)
- return -ESPIPE;
-
- /*
- * For now, we redirect writes from /dev/console as
- * well as /dev/tty0.
- */
- inode = file->f_dentry->d_inode;
- is_console = (inode->i_rdev == SYSCONS_DEV ||
- inode->i_rdev == CONSOLE_DEV);
-
- if (is_console) {
- struct file *p = NULL;
-
- spin_lock(&redirect_lock);
- if (redirect) {
- get_file(redirect);
- p = redirect;
- }
- spin_unlock(&redirect_lock);
-
- if (p) {
- ssize_t res = p->f_op->write(p, buf, count, &p->f_pos);
- fput(p);
- return res;
- }
- }
-
- tty = (struct tty_struct *)file->private_data;
- if (tty_paranoia_check(tty, inode->i_rdev, "tty_write"))
- return -EIO;
- if (!tty || !tty->driver.write || (test_bit(TTY_IO_ERROR, &tty->flags)))
- return -EIO;
-#if 0
- if (!is_console && L_TOSTOP(tty) && (tty->pgrp > 0) &&
- (current->tty == tty) && (tty->pgrp != current->pgrp)) {
- if (is_orphaned_pgrp(current->pgrp))
- return -EIO;
- if (!is_ignored(SIGTTOU)) {
- (void) kill_pg(current->pgrp, SIGTTOU, 1);
- return -ERESTARTSYS;
- }
- }
-#endif
-
- ld = tty_ldisc_ref_wait(tty);
- if (!ld->write)
- ret = -EIO;
- else
- ret = do_tty_write(ld->write, tty, file,
- (const unsigned char __user *)buf, count);
- tty_ldisc_deref(ld);
- return ret;
-}
-
-/* Semaphore to protect creating and releasing a tty. This is shared with
- vt.c for deeply disgusting hack reasons */
-static DECLARE_MUTEX(tty_sem);
-
-static void down_tty_sem(int index)
-{
- down(&tty_sem);
-}
-
-static void up_tty_sem(int index)
-{
- up(&tty_sem);
-}
-
-static void release_mem(struct tty_struct *tty, int idx);
-
-/*
- * WSH 06/09/97: Rewritten to remove races and properly clean up after a
- * failed open. The new code protects the open with a semaphore, so it's
- * really quite straightforward. The semaphore locking can probably be
- * relaxed for the (most common) case of reopening a tty.
- */
-static int init_dev(kdev_t device, struct tty_struct **ret_tty)
-{
- struct tty_struct *tty, *o_tty;
- struct termios *tp, **tp_loc, *o_tp, **o_tp_loc;
- struct termios *ltp, **ltp_loc, *o_ltp, **o_ltp_loc;
- struct tty_driver *driver;
- int retval=0;
- int idx;
-
- driver = get_tty_driver(device);
- if (!driver)
- return -ENODEV;
-
- idx = MINOR(device) - driver->minor_start;
-
- /*
- * Check whether we need to acquire the tty semaphore to avoid
- * race conditions. For now, play it safe.
- */
- down_tty_sem(idx);
-
- /* check whether we're reopening an existing tty */
- tty = driver->table[idx];
- if (tty) goto fast_track;
-
- /*
- * First time open is complex, especially for PTY devices.
- * This code guarantees that either everything succeeds and the
- * TTY is ready for operation, or else the table slots are vacated
- * and the allocated memory released. (Except that the termios
- * and locked termios may be retained.)
- */
-
- o_tty = NULL;
- tp = o_tp = NULL;
- ltp = o_ltp = NULL;
-
- tty = alloc_tty_struct();
- if(!tty)
- goto fail_no_mem;
- initialize_tty_struct(tty);
- tty->device = device;
- tty->driver = *driver;
-
- tp_loc = &driver->termios[idx];
- if (!*tp_loc) {
- tp = (struct termios *) kmalloc(sizeof(struct termios),
- GFP_KERNEL);
- if (!tp)
- goto free_mem_out;
- *tp = driver->init_termios;
- }
-
- ltp_loc = &driver->termios_locked[idx];
- if (!*ltp_loc) {
- ltp = (struct termios *) kmalloc(sizeof(struct termios),
- GFP_KERNEL);
- if (!ltp)
- goto free_mem_out;
- memset(ltp, 0, sizeof(struct termios));
- }
-
- if (driver->type == TTY_DRIVER_TYPE_PTY) {
- o_tty = alloc_tty_struct();
- if (!o_tty)
- goto free_mem_out;
- initialize_tty_struct(o_tty);
- o_tty->device = (kdev_t) MKDEV(driver->other->major,
- driver->other->minor_start + idx);
- o_tty->driver = *driver->other;
-
- o_tp_loc = &driver->other->termios[idx];
- if (!*o_tp_loc) {
- o_tp = (struct termios *)
- kmalloc(sizeof(struct termios), GFP_KERNEL);
- if (!o_tp)
- goto free_mem_out;
- *o_tp = driver->other->init_termios;
- }
-
- o_ltp_loc = &driver->other->termios_locked[idx];
- if (!*o_ltp_loc) {
- o_ltp = (struct termios *)
- kmalloc(sizeof(struct termios), GFP_KERNEL);
- if (!o_ltp)
- goto free_mem_out;
- memset(o_ltp, 0, sizeof(struct termios));
- }
-
- /*
- * Everything allocated ... set up the o_tty structure.
- */
- driver->other->table[idx] = o_tty;
- if (!*o_tp_loc)
- *o_tp_loc = o_tp;
- if (!*o_ltp_loc)
- *o_ltp_loc = o_ltp;
- o_tty->termios = *o_tp_loc;
- o_tty->termios_locked = *o_ltp_loc;
- (*driver->other->refcount)++;
- if (driver->subtype == PTY_TYPE_MASTER)
- o_tty->count++;
-
- /* Establish the links in both directions */
- tty->link = o_tty;
- o_tty->link = tty;
- }
-
- /*
- * All structures have been allocated, so now we install them.
- * Failures after this point use release_mem to clean up, so
- * there's no need to null out the local pointers.
- */
- driver->table[idx] = tty;
-
- if (!*tp_loc)
- *tp_loc = tp;
- if (!*ltp_loc)
- *ltp_loc = ltp;
- tty->termios = *tp_loc;
- tty->termios_locked = *ltp_loc;
- (*driver->refcount)++;
- tty->count++;
-
- /*
- * Structures all installed ... call the ldisc open routines.
- * If we fail here just call release_mem to clean up. No need
- * to decrement the use counts, as release_mem doesn't care.
- */
- if (tty->ldisc.open) {
- retval = (tty->ldisc.open)(tty);
- if (retval)
- goto release_mem_out;
- }
- if (o_tty && o_tty->ldisc.open) {
- retval = (o_tty->ldisc.open)(o_tty);
- if (retval) {
- if (tty->ldisc.close)
- (tty->ldisc.close)(tty);
- goto release_mem_out;
- }
- set_bit(TTY_LDISC, &o_tty->flags);
- tty_ldisc_enable(o_tty);
- }
- tty_ldisc_enable(tty);
- goto success;
-
- /*
- * This fast open can be used if the tty is already open.
- * No memory is allocated, and the only failures are from
- * attempting to open a closing tty or attempting multiple
- * opens on a pty master.
- */
-fast_track:
- if (test_bit(TTY_CLOSING, &tty->flags)) {
- retval = -EIO;
- goto end_init;
- }
- if (driver->type == TTY_DRIVER_TYPE_PTY &&
- driver->subtype == PTY_TYPE_MASTER) {
- /*
- * special case for PTY masters: only one open permitted,
- * and the slave side open count is incremented as well.
- */
- if (tty->count) {
- retval = -EIO;
- goto end_init;
- }
- tty->link->count++;
- }
- tty->count++;
- tty->driver = *driver; /* N.B. why do this every time?? */
- /* FIXME */
- if(!test_bit(TTY_LDISC, &tty->flags))
- printk(KERN_ERR "init_dev but no ldisc\n");
-success:
- *ret_tty = tty;
-
- /* All paths come through here to release the semaphore */
-end_init:
- up_tty_sem(idx);
- return retval;
-
- /* Release locally allocated memory ... nothing placed in slots */
-free_mem_out:
- if (o_tp)
- kfree(o_tp);
- if (o_tty)
- free_tty_struct(o_tty);
- if (ltp)
- kfree(ltp);
- if (tp)
- kfree(tp);
- free_tty_struct(tty);
-
-fail_no_mem:
- retval = -ENOMEM;
- goto end_init;
-
- /* call the tty release_mem routine to clean out this slot */
-release_mem_out:
- printk(KERN_INFO "init_dev: ldisc open failed, "
- "clearing slot %d\n", idx);
- release_mem(tty, idx);
- goto end_init;
-}
-
-/*
- * Releases memory associated with a tty structure, and clears out the
- * driver table slots.
- */
-static void release_mem(struct tty_struct *tty, int idx)
-{
- struct tty_struct *o_tty;
- struct termios *tp;
-
- if ((o_tty = tty->link) != NULL) {
- o_tty->driver.table[idx] = NULL;
- if (o_tty->driver.flags & TTY_DRIVER_RESET_TERMIOS) {
- tp = o_tty->driver.termios[idx];
- o_tty->driver.termios[idx] = NULL;
- kfree(tp);
- }
- o_tty->magic = 0;
- (*o_tty->driver.refcount)--;
- list_del_init(&o_tty->tty_files);
- free_tty_struct(o_tty);
- }
-
- tty->driver.table[idx] = NULL;
- if (tty->driver.flags & TTY_DRIVER_RESET_TERMIOS) {
- tp = tty->driver.termios[idx];
- tty->driver.termios[idx] = NULL;
- kfree(tp);
- }
- tty->magic = 0;
- (*tty->driver.refcount)--;
- list_del_init(&tty->tty_files);
- free_tty_struct(tty);
-}
-
-/*
- * Even releasing the tty structures is a tricky business.. We have
- * to be very careful that the structures are all released at the
- * same time, as interrupts might otherwise get the wrong pointers.
- *
- * WSH 09/09/97: rewritten to avoid some nasty race conditions that could
- * lead to double frees or releasing memory still in use.
- */
-static void release_dev(struct file * filp)
-{
- struct tty_struct *tty, *o_tty;
- int pty_master, tty_closing, o_tty_closing, do_sleep;
- int idx;
- char buf[64];
- unsigned long flags;
-
- tty = (struct tty_struct *)filp->private_data;
- if (tty_paranoia_check(tty, filp->f_dentry->d_inode->i_rdev,
"release_dev"))
- return;
-
- check_tty_count(tty, "release_dev");
-
- tty_fasync(-1, filp, 0);
-
- idx = MINOR(tty->device) - tty->driver.minor_start;
- pty_master = (tty->driver.type == TTY_DRIVER_TYPE_PTY &&
- tty->driver.subtype == PTY_TYPE_MASTER);
- o_tty = tty->link;
-
-#ifdef TTY_PARANOIA_CHECK
- if (idx < 0 || idx >= tty->driver.num) {
- printk(KERN_DEBUG "release_dev: bad idx when trying to "
- "free (%s)\n", kdevname(tty->device));
- return;
- }
- if (tty != tty->driver.table[idx]) {
- printk(KERN_DEBUG "release_dev: driver.table[%d] not tty "
- "for (%s)\n", idx, kdevname(tty->device));
- return;
- }
- if (tty->termios != tty->driver.termios[idx]) {
- printk(KERN_DEBUG "release_dev: driver.termios[%d] not termios "
- "for (%s)\n",
- idx, kdevname(tty->device));
- return;
- }
- if (tty->termios_locked != tty->driver.termios_locked[idx]) {
- printk(KERN_DEBUG "release_dev: driver.termios_locked[%d] not "
- "termios_locked for (%s)\n",
- idx, kdevname(tty->device));
- return;
- }
-#endif
-
-#ifdef TTY_DEBUG_HANGUP
- printk(KERN_DEBUG "release_dev of %s (tty count=%d)...",
- tty_name(tty, buf), tty->count);
-#endif
-
-#ifdef TTY_PARANOIA_CHECK
- if (tty->driver.other) {
- if (o_tty != tty->driver.other->table[idx]) {
- printk(KERN_DEBUG "release_dev: other->table[%d] "
- "not o_tty for (%s)\n",
- idx, kdevname(tty->device));
- return;
- }
- if (o_tty->termios != tty->driver.other->termios[idx]) {
- printk(KERN_DEBUG "release_dev: other->termios[%d] "
- "not o_termios for (%s)\n",
- idx, kdevname(tty->device));
- return;
- }
- if (o_tty->termios_locked !=
- tty->driver.other->termios_locked[idx]) {
- printk(KERN_DEBUG "release_dev: other->termios_locked["
- "%d] not o_termios_locked for (%s)\n",
- idx, kdevname(tty->device));
- return;
- }
- if (o_tty->link != tty) {
- printk(KERN_DEBUG "release_dev: bad pty pointers\n");
- return;
- }
- }
-#endif
-
- if (tty->driver.close)
- tty->driver.close(tty, filp);
-
- /*
- * Sanity check: if tty->count is going to zero, there shouldn't be
- * any waiters on tty->read_wait or tty->write_wait. We test the
- * wait queues and kick everyone out _before_ actually starting to
- * close. This ensures that we won't block while releasing the tty
- * structure.
- *
- * The test for the o_tty closing is necessary, since the master and
- * slave sides may close in any order. If the slave side closes out
- * first, its count will be one, since the master side holds an open.
- * Thus this test wouldn't be triggered at the time the slave closes,
- * so we do it now.
- *
- * Note that it's possible for the tty to be opened again while we're
- * flushing out waiters. By recalculating the closing flags before
- * each iteration we avoid any problems.
- */
- while (1) {
- tty_closing = tty->count <= 1;
- o_tty_closing = o_tty &&
- (o_tty->count <= (pty_master ? 1 : 0));
- do_sleep = 0;
-
- if (tty_closing) {
- if (waitqueue_active(&tty->read_wait)) {
- wake_up(&tty->read_wait);
- do_sleep++;
- }
- if (waitqueue_active(&tty->write_wait)) {
- wake_up(&tty->write_wait);
- do_sleep++;
- }
- }
- if (o_tty_closing) {
- if (waitqueue_active(&o_tty->read_wait)) {
- wake_up(&o_tty->read_wait);
- do_sleep++;
- }
- if (waitqueue_active(&o_tty->write_wait)) {
- wake_up(&o_tty->write_wait);
- do_sleep++;
- }
- }
- if (!do_sleep)
- break;
-
- printk(KERN_WARNING "release_dev: %s: read/write wait queue "
- "active!\n", tty_name(tty, buf));
- schedule();
- }
-
- /*
- * The closing flags are now consistent with the open counts on
- * both sides, and we've completed the last operation that could
- * block, so it's safe to proceed with closing.
- */
- if (pty_master) {
- if (--o_tty->count < 0) {
- printk(KERN_WARNING "release_dev: bad pty slave count "
- "(%d) for %s\n",
- o_tty->count, tty_name(o_tty, buf));
- o_tty->count = 0;
- }
- }
- if (--tty->count < 0) {
- printk(KERN_WARNING "release_dev: bad tty->count (%d) for %s\n",
- tty->count, tty_name(tty, buf));
- tty->count = 0;
- }
-
- /*
- * We've decremented tty->count, so we should zero out
- * filp->private_data, to break the link between the tty and
- * the file descriptor. Otherwise if filp_close() blocks before
- * the file descriptor is removed from the inuse_filp
- * list, check_tty_count() could observe a discrepancy and
- * printk a warning message to the user.
- */
- filp->private_data = 0;
-
- /*
- * Perform some housekeeping before deciding whether to return.
- *
- * Set the TTY_CLOSING flag if this was the last open. In the
- * case of a pty we may have to wait around for the other side
- * to close, and TTY_CLOSING makes sure we can't be reopened.
- */
- if(tty_closing)
- set_bit(TTY_CLOSING, &tty->flags);
- if(o_tty_closing)
- set_bit(TTY_CLOSING, &o_tty->flags);
-
- /*
- * If _either_ side is closing, make sure there aren't any
- * processes that still think tty or o_tty is their controlling
- * tty.
- */
- if (tty_closing || o_tty_closing) {
- struct task_struct *p;
-
- read_lock(&tasklist_lock);
- for_each_task(p) {
- if (p->tty == tty || (o_tty && p->tty == o_tty))
- p->tty = NULL;
- }
- read_unlock(&tasklist_lock);
- }
-
- /* check whether both sides are closing ... */
- if (!tty_closing || (o_tty && !o_tty_closing))
- return;
-
-#ifdef TTY_DEBUG_HANGUP
- printk(KERN_DEBUG "freeing tty structure...");
-#endif
-
- /*
- * Prevent flush_to_ldisc() from rescheduling the work for later. Then
- * kill any delayed work. As this is the final close it does not
- * race with the set_ldisc code path.
- */
- clear_bit(TTY_LDISC, &tty->flags);
- clear_bit(TTY_DONT_FLIP, &tty->flags);
-
- /*
- * Wait for ->hangup_work and ->flip.work handlers to terminate
- */
-
- run_task_queue(&tq_timer);
- flush_scheduled_tasks();
-
- /*
- * Wait for any short term users (we know they are just driver
- * side waiters as the file is closing so user count on the file
- * side is zero.
- */
-
- spin_lock_irqsave(&tty_ldisc_lock, flags);
- while(tty->ldisc.refcount)
- {
- spin_unlock_irqrestore(&tty_ldisc_lock, flags);
- wait_event(tty_ldisc_wait, tty->ldisc.refcount == 0);
- spin_lock_irqsave(&tty_ldisc_lock, flags);
- }
- spin_unlock_irqrestore(&tty_ldisc_lock, flags);
-
- /*
- * Shutdown the current line discipline, and reset it to N_TTY.
- * N.B. why reset ldisc when we're releasing the memory??
- * FIXME: this MUST get fixed for the new reflocking
- */
- if (tty->ldisc.close)
- (tty->ldisc.close)(tty);
- tty_ldisc_put(tty->ldisc.num);
-
- /*
- * Switch the line discipline back
- */
- tty_ldisc_assign(tty, tty_ldisc_get(N_TTY));
- tty_set_termios_ldisc(tty,N_TTY);
-
- if (o_tty) {
- /* FIXME: could o_tty be in setldisc here ? */
- clear_bit(TTY_LDISC, &o_tty->flags);
- if (o_tty->ldisc.close)
- (o_tty->ldisc.close)(o_tty);
- tty_ldisc_put(o_tty->ldisc.num);
- tty_ldisc_assign(o_tty, tty_ldisc_get(N_TTY));
- tty_set_termios_ldisc(o_tty,N_TTY);
- }
-
- /*
- * The release_mem function takes care of the details of clearing
- * the slots and preserving the termios structure.
- */
- release_mem(tty, idx);
-}
-
-/*
- * tty_open and tty_release keep up the tty count that contains the
- * number of opens done on a tty. We cannot use the inode-count, as
- * different inodes might point to the same tty.
- *
- * Open-counting is needed for pty masters, as well as for keeping
- * track of serial lines: DTR is dropped when the last close happens.
- * (This is not done solely through tty->count, now. - Ted 1/27/92)
- *
- * The termios state of a pty is reset on first open so that
- * settings don't persist across reuse.
- */
-static int tty_open(struct inode * inode, struct file * filp)
-{
- struct tty_struct *tty;
- int noctty, retval;
- kdev_t device;
- unsigned short saved_flags;
- char buf[64];
-
- saved_flags = filp->f_flags;
-retry_open:
- noctty = filp->f_flags & O_NOCTTY;
- device = inode->i_rdev;
- if (device == TTY_DEV) {
- if (!current->tty)
- return -ENXIO;
- device = current->tty->device;
- filp->f_flags |= O_NONBLOCK; /* Don't let /dev/tty block */
- /* noctty = 1; */
- }
-#ifdef CONFIG_VT
- if (device == CONSOLE_DEV) {
- extern int fg_console;
- device = MKDEV(TTY_MAJOR, fg_console + 1);
- noctty = 1;
- }
-#endif
- if (device == SYSCONS_DEV) {
- struct console *c = console_drivers;
- while(c && !c->device)
- c = c->next;
- if (!c)
- return -ENODEV;
- device = c->device(c);
- filp->f_flags |= O_NONBLOCK; /* Don't let /dev/console block */
- noctty = 1;
- }
-
- if (device == PTMX_DEV) {
-#ifdef CONFIG_UNIX98_PTYS
-
- /* find a free pty. */
- int major, minor;
- struct tty_driver *driver;
-
- /* find a device that is not in use. */
- retval = -1;
- for ( major = 0 ; major < UNIX98_NR_MAJORS ; major++ ) {
- driver = &ptm_driver[major];
- for (minor = driver->minor_start ;
- minor < driver->minor_start + driver->num ;
- minor++) {
- device = MKDEV(driver->major, minor);
- if (!init_dev(device, &tty)) goto ptmx_found;
/* ok! */
- }
- }
- return -EIO; /* no free ptys */
- ptmx_found:
- set_bit(TTY_PTY_LOCK, &tty->flags); /* LOCK THE SLAVE */
- minor -= driver->minor_start;
- devpts_pty_new(driver->other->name_base + minor,
MKDEV(driver->other->major, minor + driver->other->minor_start));
- tty_register_devfs(&pts_driver[major], DEVFS_FL_DEFAULT,
- pts_driver[major].minor_start + minor);
- noctty = 1;
- goto init_dev_done;
-
-#else /* CONFIG_UNIX_98_PTYS */
-
- return -ENODEV;
-
-#endif /* CONFIG_UNIX_98_PTYS */
- }
-
- retval = init_dev(device, &tty);
- if (retval)
- return retval;
-
-#ifdef CONFIG_UNIX98_PTYS
-init_dev_done:
-#endif
- filp->private_data = tty;
- file_move(filp, &tty->tty_files);
- check_tty_count(tty, "tty_open");
- if (tty->driver.type == TTY_DRIVER_TYPE_PTY &&
- tty->driver.subtype == PTY_TYPE_MASTER)
- noctty = 1;
-#ifdef TTY_DEBUG_HANGUP
- printk(KERN_DEBUG "opening %s...", tty_name(tty, buf));
-#endif
- if (tty->driver.open)
- retval = tty->driver.open(tty, filp);
- else
- retval = -ENODEV;
- filp->f_flags = saved_flags;
-
- if (!retval && test_bit(TTY_EXCLUSIVE, &tty->flags) && !suser())
- retval = -EBUSY;
-
- if (retval) {
-#ifdef TTY_DEBUG_HANGUP
- printk(KERN_DEBUG "error %d in opening %s...", retval,
- tty_name(tty, buf));
-#endif
-
- release_dev(filp);
- if (retval != -ERESTARTSYS)
- return retval;
- if (signal_pending(current))
- return retval;
- schedule();
- /*
- * Need to reset f_op in case a hangup happened.
- */
- filp->f_op = &tty_fops;
- goto retry_open;
- }
- if (!noctty &&
- current->leader &&
- !current->tty &&
- tty->session == 0) {
- task_lock(current);
- current->tty = tty;
- task_unlock(current);
- current->tty_old_pgrp = 0;
- tty->session = current->session;
- tty->pgrp = current->pgrp;
- }
- if ((tty->driver.type == TTY_DRIVER_TYPE_SERIAL) &&
- (tty->driver.subtype == SERIAL_TYPE_CALLOUT) &&
- (tty->count == 1)) {
- static int nr_warns;
- if (nr_warns < 5) {
- printk(KERN_WARNING "tty_io.c: "
- "process %d (%s) used obsolete /dev/%s - "
- "update software to use /dev/ttyS%d\n",
- current->pid, current->comm,
- tty_name(tty, buf), TTY_NUMBER(tty));
- nr_warns++;
- }
- }
- return 0;
-}
-
-static int tty_release(struct inode * inode, struct file * filp)
-{
- lock_kernel();
- release_dev(filp);
- unlock_kernel();
- return 0;
-}
-
-/* No kernel lock held - fine */
-static unsigned int tty_poll(struct file * filp, poll_table * wait)
-{
- struct tty_struct * tty;
- struct tty_ldisc *ld;
- int ret = 0;
-
- tty = (struct tty_struct *)filp->private_data;
- if (tty_paranoia_check(tty, filp->f_dentry->d_inode->i_rdev,
"tty_poll"))
- return 0;
-
- ld = tty_ldisc_ref_wait(tty);
- if (ld->poll)
- ret = (ld->poll)(tty, filp, wait);
- tty_ldisc_deref(ld);
- return ret;
-}
-
-static int tty_fasync(int fd, struct file * filp, int on)
-{
- struct tty_struct * tty;
- int retval;
-
- tty = (struct tty_struct *)filp->private_data;
- if (tty_paranoia_check(tty, filp->f_dentry->d_inode->i_rdev,
"tty_fasync"))
- return 0;
-
- retval = fasync_helper(fd, filp, on, &tty->fasync);
- if (retval <= 0)
- return retval;
-
- if (on) {
- if (!waitqueue_active(&tty->read_wait))
- tty->minimum_to_wake = 1;
- if (filp->f_owner.pid == 0) {
- filp->f_owner.pid = (-tty->pgrp) ? : current->pid;
- filp->f_owner.uid = current->uid;
- filp->f_owner.euid = current->euid;
- }
- } else {
- if (!tty->fasync && !waitqueue_active(&tty->read_wait))
- tty->minimum_to_wake = N_TTY_BUF_SIZE;
- }
- return 0;
-}
-
-static int tiocsti(struct tty_struct *tty, char * arg)
-{
- char ch, mbz = 0;
- struct tty_ldisc *ld;
-
- if ((current->tty != tty) && !suser())
- return -EPERM;
- if (get_user(ch, arg))
- return -EFAULT;
- ld = tty_ldisc_ref_wait(tty);
- ld->receive_buf(tty, &ch, &mbz, 1);
- tty_ldisc_deref(ld);
- return 0;
-}
-
-static int tiocgwinsz(struct tty_struct *tty, struct winsize * arg)
-{
- if (copy_to_user(arg, &tty->winsize, sizeof(*arg)))
- return -EFAULT;
- return 0;
-}
-
-static int tiocswinsz(struct tty_struct *tty, struct tty_struct *real_tty,
- struct winsize * arg)
-{
- struct winsize tmp_ws;
-
- if (copy_from_user(&tmp_ws, arg, sizeof(*arg)))
- return -EFAULT;
- if (!memcmp(&tmp_ws, &tty->winsize, sizeof(*arg)))
- return 0;
- if (tty->pgrp > 0)
- kill_pg(tty->pgrp, SIGWINCH, 1);
- if ((real_tty->pgrp != tty->pgrp) && (real_tty->pgrp > 0))
- kill_pg(real_tty->pgrp, SIGWINCH, 1);
- tty->winsize = tmp_ws;
- real_tty->winsize = tmp_ws;
- return 0;
-}
-
-static int tioccons(struct inode *inode, struct file *file)
-{
- if (inode->i_rdev == SYSCONS_DEV ||
- inode->i_rdev == CONSOLE_DEV) {
- struct file *f;
- if (!suser())
- return -EPERM;
- spin_lock(&redirect_lock);
- f = redirect;
- redirect = NULL;
- spin_unlock(&redirect_lock);
- if (f)
- fput(f);
- return 0;
- }
- spin_lock(&redirect_lock);
- if (redirect) {
- spin_unlock(&redirect_lock);
- return -EBUSY;
- }
- get_file(file);
- redirect = file;
- spin_unlock(&redirect_lock);
- return 0;
-}
-
-
-static int fionbio(struct file *file, int *arg)
-{
- int nonblock;
-
- if (get_user(nonblock, arg))
- return -EFAULT;
-
- if (nonblock)
- file->f_flags |= O_NONBLOCK;
- else
- file->f_flags &= ~O_NONBLOCK;
- return 0;
-}
-
-static int tiocsctty(struct tty_struct *tty, int arg)
-{
- if (current->leader &&
- (current->session == tty->session))
- return 0;
- /*
- * The process must be a session leader and
- * not have a controlling tty already.
- */
- if (!current->leader || current->tty)
- return -EPERM;
- if (tty->session > 0) {
- /*
- * This tty is already the controlling
- * tty for another session group!
- */
- if ((arg == 1) && suser()) {
- /*
- * Steal it away
- */
- struct task_struct *p;
-
- read_lock(&tasklist_lock);
- for_each_task(p)
- if (p->tty == tty)
- p->tty = NULL;
- read_unlock(&tasklist_lock);
- } else
- return -EPERM;
- }
- task_lock(current);
- current->tty = tty;
- task_unlock(current);
- current->tty_old_pgrp = 0;
- tty->session = current->session;
- tty->pgrp = current->pgrp;
- return 0;
-}
-
-static int tiocgpgrp(struct tty_struct *tty, struct tty_struct *real_tty,
pid_t *arg)
-{
- /*
- * (tty == real_tty) is a cheap way of
- * testing if the tty is NOT a master pty.
- */
- if (tty == real_tty && current->tty != real_tty)
- return -ENOTTY;
- return put_user(real_tty->pgrp, arg);
-}
-
-static int tiocspgrp(struct tty_struct *tty, struct tty_struct *real_tty,
pid_t *arg)
-{
- pid_t pgrp;
- int retval = tty_check_change(real_tty);
-
- if (retval == -EIO)
- return -ENOTTY;
- if (retval)
- return retval;
- if (!current->tty ||
- (current->tty != real_tty) ||
- (real_tty->session != current->session))
- return -ENOTTY;
- if (get_user(pgrp, (pid_t *) arg))
- return -EFAULT;
- if (pgrp < 0)
- return -EINVAL;
- if (session_of_pgrp(pgrp) != current->session)
- return -EPERM;
- real_tty->pgrp = pgrp;
- return 0;
-}
-
-static int tiocgsid(struct tty_struct *tty, struct tty_struct *real_tty, pid_t
*arg)
-{
- /*
- * (tty == real_tty) is a cheap way of
- * testing if the tty is NOT a master pty.
- */
- if (tty == real_tty && current->tty != real_tty)
- return -ENOTTY;
- if (real_tty->session <= 0)
- return -ENOTTY;
- return put_user(real_tty->session, arg);
-}
-
-static int tiocttygstruct(struct tty_struct *tty, struct tty_struct *arg)
-{
- if (copy_to_user(arg, tty, sizeof(*arg)))
- return -EFAULT;
- return 0;
-}
-
-static int tiocsetd(struct tty_struct *tty, int *arg)
-{
- int ldisc;
-
- if (get_user(ldisc, arg))
- return -EFAULT;
- return tty_set_ldisc(tty, ldisc);
-}
-
-static int send_break(struct tty_struct *tty, int duration)
-{
- tty->driver.break_ctl(tty, -1);
- if (!signal_pending(current)) {
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(duration);
- }
- tty->driver.break_ctl(tty, 0);
- if (signal_pending(current))
- return -EINTR;
- return 0;
-}
-
-static int tty_generic_brk(struct tty_struct *tty, struct file *file, unsigned
int cmd, unsigned long arg)
-{
- if (cmd == TCSBRK && arg)
- {
- /* tcdrain case */
- int retval = tty_check_change(tty);
- if (retval)
- return retval;
- tty_wait_until_sent(tty, 0);
- if (signal_pending(current))
- return -EINTR;
- }
- return 0;
-}
-
-/*
- * Split this up, as gcc can choke on it otherwise..
- */
-int tty_ioctl(struct inode * inode, struct file * file,
- unsigned int cmd, unsigned long arg)
-{
- struct tty_struct *tty, *real_tty;
- int retval;
- struct tty_ldisc *ld;
-
- tty = (struct tty_struct *)file->private_data;
- if (tty_paranoia_check(tty, inode->i_rdev, "tty_ioctl"))
- return -EINVAL;
-
- real_tty = tty;
- if (tty->driver.type == TTY_DRIVER_TYPE_PTY &&
- tty->driver.subtype == PTY_TYPE_MASTER)
- real_tty = tty->link;
-
- /*
- * Break handling by driver
- */
- if (!tty->driver.break_ctl) {
- switch(cmd) {
- case TIOCSBRK:
- case TIOCCBRK:
- if (tty->driver.ioctl)
- return tty->driver.ioctl(tty, file, cmd, arg);
- return -EINVAL;
-
- /* These two ioctl's always return success; even if */
- /* the driver doesn't support them. */
- case TCSBRK:
- case TCSBRKP:
- retval = -ENOIOCTLCMD;
- if (tty->driver.ioctl)
- retval = tty->driver.ioctl(tty, file, cmd, arg);
- /* Not driver handled */
- if (retval == -ENOIOCTLCMD)
- retval = tty_generic_brk(tty, file, cmd, arg);
- return retval;
- }
- }
-
- /*
- * Factor out some common prep work
- */
- switch (cmd) {
- case TIOCSETD:
- case TIOCSBRK:
- case TIOCCBRK:
- case TCSBRK:
- case TCSBRKP:
- retval = tty_check_change(tty);
- if (retval)
- return retval;
- if (cmd != TIOCCBRK) {
- tty_wait_until_sent(tty, 0);
- if (signal_pending(current))
- return -EINTR;
- }
- break;
- }
-
- switch (cmd) {
- case TIOCSTI:
- return tiocsti(tty, (char *)arg);
- case TIOCGWINSZ:
- return tiocgwinsz(tty, (struct winsize *) arg);
- case TIOCSWINSZ:
- return tiocswinsz(tty, real_tty, (struct winsize *)
arg);
- case TIOCCONS:
- return real_tty!=tty ? -EINVAL : tioccons(inode, file);
- case FIONBIO:
- return fionbio(file, (int *) arg);
- case TIOCEXCL:
- set_bit(TTY_EXCLUSIVE, &tty->flags);
- return 0;
- case TIOCNXCL:
- clear_bit(TTY_EXCLUSIVE, &tty->flags);
- return 0;
- case TIOCNOTTY:
- if (current->tty != tty)
- return -ENOTTY;
- if (current->leader)
- disassociate_ctty(0);
- task_lock(current);
- current->tty = NULL;
- task_unlock(current);
- return 0;
- case TIOCSCTTY:
- return tiocsctty(tty, arg);
- case TIOCGPGRP:
- return tiocgpgrp(tty, real_tty, (pid_t *) arg);
- case TIOCSPGRP:
- return tiocspgrp(tty, real_tty, (pid_t *) arg);
- case TIOCGSID:
- return tiocgsid(tty, real_tty, (pid_t *) arg);
- case TIOCGETD:
- /* FIXME: check this is ok */
- return put_user(tty->ldisc.num, (int *) arg);
- case TIOCSETD:
- return tiocsetd(tty, (int *) arg);
-#ifdef CONFIG_VT
- case TIOCLINUX:
- return tioclinux(tty, arg);
-#endif
- case TIOCTTYGSTRUCT:
- return tiocttygstruct(tty, (struct tty_struct *) arg);
-
- /*
- * Break handling
- */
- case TIOCSBRK: /* Turn break on, unconditionally */
- tty->driver.break_ctl(tty, -1);
- return 0;
-
- case TIOCCBRK: /* Turn break off, unconditionally */
- tty->driver.break_ctl(tty, 0);
- return 0;
- case TCSBRK: /* SVID version: non-zero arg --> no break */
- /*
- * XXX is the above comment correct, or the
- * code below correct? Is this ioctl used at
- * all by anyone?
- */
- if (!arg)
- return send_break(tty, HZ/4);
- return 0;
- case TCSBRKP: /* support for POSIX tcsendbreak() */
- return send_break(tty, arg ? arg*(HZ/10) : HZ/4);
- }
- if (tty->driver.ioctl) {
- retval = (tty->driver.ioctl)(tty, file, cmd, arg);
- if (retval != -ENOIOCTLCMD)
- return retval;
- }
- ld = tty_ldisc_ref_wait(tty);
- retval = -EINVAL;
- if (ld->ioctl) {
- retval = ld->ioctl(tty, file, cmd, arg);
- if (retval == -ENOIOCTLCMD)
- retval = -EINVAL;
- }
- tty_ldisc_deref(ld);
- return retval;
-}
-
-
-/*
- * This implements the "Secure Attention Key" --- the idea is to
- * prevent trojan horses by killing all processes associated with this
- * tty when the user hits the "Secure Attention Key". Required for
- * super-paranoid applications --- see the Orange Book for more details.
- *
- * This code could be nicer; ideally it should send a HUP, wait a few
- * seconds, then send a INT, and then a KILL signal. But you then
- * have to coordinate with the init process, since all processes associated
- * with the current tty must be dead before the new getty is allowed
- * to spawn.
- *
- * Now, if it would be correct ;-/ The current code has a nasty hole -
- * it doesn't catch files in flight. We may send the descriptor to ourselves
- * via AF_UNIX socket, close it and later fetch from socket. FIXME.
- *
- * Nasty bug: do_SAK is being called in interrupt context. This can
- * deadlock. We punt it up to process context. AKPM - 16Mar2001
- */
-static void __do_SAK(void *arg)
-{
-#ifdef TTY_SOFT_SAK
- tty_hangup(tty);
-#else
- struct tty_struct *tty = arg;
- struct task_struct *p;
- int session;
- int i;
- struct file *filp;
- struct tty_ldisc *disc;
-
- if (!tty)
- return;
- session = tty->session;
- /* We don't want an ldisc switch during this */
- disc = tty_ldisc_ref(tty);
- if (disc && disc->flush_buffer)
- disc->flush_buffer(tty);
- tty_ldisc_deref(disc);
-
- if (tty->driver.flush_buffer)
- tty->driver.flush_buffer(tty);
-
- read_lock(&tasklist_lock);
- for_each_task(p) {
- if ((p->tty == tty) ||
- ((session > 0) && (p->session == session))) {
- send_sig(SIGKILL, p, 1);
- continue;
- }
- task_lock(p);
- if (p->files) {
- read_lock(&p->files->file_lock);
- for (i=0; i < p->files->max_fds; i++) {
- filp = fcheck_files(p->files, i);
- if (filp && (filp->f_op == &tty_fops) &&
- (filp->private_data == tty)) {
- send_sig(SIGKILL, p, 1);
- break;
- }
- }
- read_unlock(&p->files->file_lock);
- }
- task_unlock(p);
- }
- read_unlock(&tasklist_lock);
-#endif
-}
-
-/*
- * The tq handling here is a little racy - tty->SAK_tq may already be queued.
- * But there's no mechanism to fix that without futzing with tqueue_lock.
- * Fortunately we don't need to worry, because if ->SAK_tq is already queued,
- * the values which we write to it will be identical to the values which it
- * already has. --akpm
- */
-void do_SAK(struct tty_struct *tty)
-{
- if (!tty)
- return;
- PREPARE_TQUEUE(&tty->SAK_tq, __do_SAK, tty);
- schedule_task(&tty->SAK_tq);
-}
-
-/*
- * This routine is called out of the software interrupt to flush data
- * from the flip buffer to the line discipline.
- */
-static void flush_to_ldisc(void *private_)
-{
- struct tty_struct *tty = (struct tty_struct *) private_;
- unsigned char *cp;
- char *fp;
- int count;
- unsigned long flags;
- struct tty_ldisc *disc;
-
- disc = tty_ldisc_ref(tty);
- if (disc == NULL) /* !TTY_LDISC */
- return;
-
- if (test_bit(TTY_DONT_FLIP, &tty->flags)) {
- queue_task(&tty->flip.tqueue, &tq_timer);
- goto out;
- }
- if (tty->flip.buf_num) {
- cp = tty->flip.char_buf + TTY_FLIPBUF_SIZE;
- fp = tty->flip.flag_buf + TTY_FLIPBUF_SIZE;
- tty->flip.buf_num = 0;
-
- save_flags(flags); cli();
- tty->flip.char_buf_ptr = tty->flip.char_buf;
- tty->flip.flag_buf_ptr = tty->flip.flag_buf;
- } else {
- cp = tty->flip.char_buf;
- fp = tty->flip.flag_buf;
- tty->flip.buf_num = 1;
-
- save_flags(flags); cli();
- tty->flip.char_buf_ptr = tty->flip.char_buf + TTY_FLIPBUF_SIZE;
- tty->flip.flag_buf_ptr = tty->flip.flag_buf + TTY_FLIPBUF_SIZE;
- }
- count = tty->flip.count;
- tty->flip.count = 0;
- restore_flags(flags);
-
- disc->receive_buf(tty, cp, fp, count);
-out:
- tty_ldisc_deref(disc);
-}
-
-/*
- * Call the ldisc flush directly from a driver. This function may
- * return an error and need retrying by the user.
- */
-
-int tty_push_data(struct tty_struct *tty, unsigned char *cp, unsigned char
*fp, int count)
-{
- int ret = 0;
- struct tty_ldisc *disc;
-
- disc = tty_ldisc_ref(tty);
- if(test_bit(TTY_DONT_FLIP, &tty->flags))
- ret = -EAGAIN;
- else if(disc == NULL)
- ret = -EIO;
- else
- disc->receive_buf(tty, cp, fp, count);
- tty_ldisc_deref(disc);
- return ret;
-
-}
-
-/*
- * Routine which returns the baud rate of the tty
- *
- * Note that the baud_table needs to be kept in sync with the
- * include/asm/termbits.h file.
- */
-static int baud_table[] = {
- 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
- 9600, 19200, 38400, 57600, 115200, 230400, 460800,
-#ifdef __sparc__
- 76800, 153600, 307200, 614400, 921600
-#else
- 500000, 576000, 921600, 1000000, 1152000, 1500000, 2000000,
- 2500000, 3000000, 3500000, 4000000
-#endif
-};
-
-static int n_baud_table = sizeof(baud_table)/sizeof(int);
-
-int tty_get_baud_rate(struct tty_struct *tty)
-{
- unsigned int cflag, i;
-
- cflag = tty->termios->c_cflag;
-
- i = cflag & CBAUD;
- if (i & CBAUDEX) {
- i &= ~CBAUDEX;
- if (i < 1 || i+15 >= n_baud_table)
- tty->termios->c_cflag &= ~CBAUDEX;
- else
- i += 15;
- }
- if (i==15 && tty->alt_speed) {
- if (!tty->warned) {
- printk(KERN_WARNING "Use of setserial/setrocket to "
- "set SPD_* flags is deprecated\n");
- tty->warned = 1;
- }
- return(tty->alt_speed);
- }
-
- return baud_table[i];
-}
-
-void tty_flip_buffer_push(struct tty_struct *tty)
-{
- if (tty->low_latency)
- flush_to_ldisc((void *) tty);
- else
- queue_task(&tty->flip.tqueue, &tq_timer);
-}
-
-/*
- * This subroutine initializes a tty structure.
- */
-static void initialize_tty_struct(struct tty_struct *tty)
-{
- memset(tty, 0, sizeof(struct tty_struct));
- tty->magic = TTY_MAGIC;
- tty_ldisc_assign(tty, tty_ldisc_get(N_TTY));
- tty->pgrp = -1;
- tty->flip.char_buf_ptr = tty->flip.char_buf;
- tty->flip.flag_buf_ptr = tty->flip.flag_buf;
- tty->flip.tqueue.routine = flush_to_ldisc;
- tty->flip.tqueue.data = tty;
- init_MUTEX(&tty->flip.pty_sem);
- init_MUTEX(&tty->termios_sem);
- init_waitqueue_head(&tty->write_wait);
- init_waitqueue_head(&tty->read_wait);
- tty->tq_hangup.routine = do_tty_hangup;
- tty->tq_hangup.data = tty;
- sema_init(&tty->atomic_read, 1);
- sema_init(&tty->atomic_write, 1);
- spin_lock_init(&tty->read_lock);
- INIT_LIST_HEAD(&tty->tty_files);
- INIT_TQUEUE(&tty->SAK_tq, 0, 0);
-}
-
-/*
- * The default put_char routine if the driver did not define one.
- */
-void tty_default_put_char(struct tty_struct *tty, unsigned char ch)
-{
- tty->driver.write(tty, 0, &ch, 1);
-}
-
-/*
- * Register a tty device described by <driver>, with minor number <minor>.
- */
-void tty_register_devfs (struct tty_driver *driver, unsigned int flags,
unsigned minor)
-{
-#ifdef CONFIG_DEVFS_FS
- umode_t mode = S_IFCHR | S_IRUSR | S_IWUSR;
- kdev_t device = MKDEV (driver->major, minor);
- int idx = minor - driver->minor_start;
- char buf[32];
-
- switch (device) {
- case TTY_DEV:
- case PTMX_DEV:
- mode |= S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
- break;
- default:
- if (driver->major == PTY_MASTER_MAJOR)
- mode |= S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
- break;
- }
- if ( (minor < driver->minor_start) ||
- (minor >= driver->minor_start + driver->num) ) {
- printk(KERN_ERR "Attempt to register invalid minor number "
- "with devfs (%d:%d).\n", (int)driver->major,(int)minor);
- return;
- }
-# ifdef CONFIG_UNIX98_PTYS
- if ( (driver->major >= UNIX98_PTY_SLAVE_MAJOR) &&
- (driver->major < UNIX98_PTY_SLAVE_MAJOR + UNIX98_NR_MAJORS) )
- flags |= DEVFS_FL_CURRENT_OWNER;
-# endif
- sprintf(buf, driver->name, idx + driver->name_base);
- devfs_register (NULL, buf, flags | DEVFS_FL_DEFAULT,
- driver->major, minor, mode, &tty_fops, NULL);
-#endif /* CONFIG_DEVFS_FS */
-}
-
-void tty_unregister_devfs (struct tty_driver *driver, unsigned minor)
-{
-#ifdef CONFIG_DEVFS_FS
- void * handle;
- int idx = minor - driver->minor_start;
- char buf[32];
-
- sprintf(buf, driver->name, idx + driver->name_base);
- handle = devfs_find_handle (NULL, buf, driver->major, minor,
- DEVFS_SPECIAL_CHR, 0);
- devfs_unregister (handle);
-#endif /* CONFIG_DEVFS_FS */
-}
-
-EXPORT_SYMBOL(tty_register_devfs);
-EXPORT_SYMBOL(tty_unregister_devfs);
-
-/*
- * Called by a tty driver to register itself.
- */
-int tty_register_driver(struct tty_driver *driver)
-{
- int error;
- int i;
-
- if (driver->flags & TTY_DRIVER_INSTALLED)
- return 0;
-
- error = devfs_register_chrdev(driver->major, driver->name, &tty_fops);
- if (error < 0)
- return error;
- else if(driver->major == 0)
- driver->major = error;
-
- if (!driver->put_char)
- driver->put_char = tty_default_put_char;
-
- driver->prev = 0;
- driver->next = tty_drivers;
- if (tty_drivers) tty_drivers->prev = driver;
- tty_drivers = driver;
-
- if ( !(driver->flags & TTY_DRIVER_NO_DEVFS) ) {
- for(i = 0; i < driver->num; i++)
- tty_register_devfs(driver, 0, driver->minor_start + i);
- }
- proc_tty_register_driver(driver);
- return error;
-}
-
-/*
- * Called by a tty driver to unregister itself.
- */
-int tty_unregister_driver(struct tty_driver *driver)
-{
- int retval;
- struct tty_driver *p;
- int i, found = 0;
- struct termios *tp;
- const char *othername = NULL;
-
- if (*driver->refcount)
- return -EBUSY;
-
- for (p = tty_drivers; p; p = p->next) {
- if (p == driver)
- found++;
- else if (p->major == driver->major)
- othername = p->name;
- }
-
- if (!found)
- return -ENOENT;
-
- if (othername == NULL) {
- retval = devfs_unregister_chrdev(driver->major, driver->name);
- if (retval)
- return retval;
- } else
- devfs_register_chrdev(driver->major, othername, &tty_fops);
-
- if (driver->prev)
- driver->prev->next = driver->next;
- else
- tty_drivers = driver->next;
-
- if (driver->next)
- driver->next->prev = driver->prev;
-
- /*
- * Free the termios and termios_locked structures because
- * we don't want to get memory leaks when modular tty
- * drivers are removed from the kernel.
- */
- for (i = 0; i < driver->num; i++) {
- tp = driver->termios[i];
- if (tp) {
- driver->termios[i] = NULL;
- kfree(tp);
- }
- tp = driver->termios_locked[i];
- if (tp) {
- driver->termios_locked[i] = NULL;
- kfree(tp);
- }
- tty_unregister_devfs(driver, driver->minor_start + i);
- }
- proc_tty_unregister_driver(driver);
- return 0;
-}
-
-
-/*
- * Initialize the console device. This is called *early*, so
- * we can't necessarily depend on lots of kernel help here.
- * Just do some early initializations, and do the complex setup
- * later.
- */
-void __init console_init(void)
-{
- /* Setup the default TTY line discipline. */
- memset(tty_ldiscs, 0, NR_LDISCS*sizeof(struct tty_ldisc));
- (void) tty_register_ldisc(N_TTY, &tty_ldisc_N_TTY);
-
- /*
- * Set up the standard termios. Individual tty drivers may
- * deviate from this; this is used as a template.
- */
- memset(&tty_std_termios, 0, sizeof(struct termios));
- memcpy(tty_std_termios.c_cc, INIT_C_CC, NCCS);
- tty_std_termios.c_iflag = ICRNL | IXON;
- tty_std_termios.c_oflag = OPOST | ONLCR;
- tty_std_termios.c_cflag = B38400 | CS8 | CREAD | HUPCL;
- tty_std_termios.c_lflag = ISIG | ICANON | ECHO | ECHOE | ECHOK |
- ECHOCTL | ECHOKE | IEXTEN;
-
- /*
- * set up the console device so that later boot sequences can
- * inform about problems etc..
- */
-#ifdef CONFIG_EARLY_PRINTK
- disable_early_printk();
-#endif
-
-#ifdef CONFIG_XEN_CONSOLE
- xen_console_init();
-#endif
-
-#ifdef CONFIG_VT
- con_init();
-#endif
-#ifdef CONFIG_AU1X00_SERIAL_CONSOLE
- au1x00_serial_console_init();
-#endif
-#ifdef CONFIG_SERIAL_CONSOLE
-#if (defined(CONFIG_8xx) || defined(CONFIG_CPM2))
- console_8xx_init();
-#elif defined(CONFIG_MAC_SERIAL) && defined(CONFIG_SERIAL)
- if (_machine == _MACH_Pmac)
- mac_scc_console_init();
- else
- serial_console_init();
-#elif defined(CONFIG_MAC_SERIAL)
- mac_scc_console_init();
-#elif defined(CONFIG_PARISC)
- pdc_console_init();
-#elif defined(CONFIG_SERIAL)
- serial_console_init();
-#endif /* CONFIG_8xx */
-#if defined(CONFIG_MVME162_SCC) || defined(CONFIG_BVME6000_SCC) ||
defined(CONFIG_MVME147_SCC)
- vme_scc_console_init();
-#endif
-#if defined(CONFIG_SERIAL167)
- serial167_console_init();
-#endif
-#if defined(CONFIG_SH_SCI)
- sci_console_init();
-#endif
-#endif
-#ifdef CONFIG_SERIAL_DEC_CONSOLE
- dec_serial_console_init();
-#endif
-#ifdef CONFIG_TN3270_CONSOLE
- tub3270_con_init();
-#endif
-#ifdef CONFIG_TN3215
- con3215_init();
-#endif
-#ifdef CONFIG_HWC
- hwc_console_init();
-#endif
-#ifdef CONFIG_STDIO_CONSOLE
- stdio_console_init();
-#endif
-#ifdef CONFIG_SERIAL_21285_CONSOLE
- rs285_console_init();
-#endif
-#ifdef CONFIG_SERIAL_SA1100_CONSOLE
- sa1100_rs_console_init();
-#endif
-#ifdef CONFIG_ARC_CONSOLE
- arc_console_init();
-#endif
-#ifdef CONFIG_SERIAL_AMBA_CONSOLE
- ambauart_console_init();
-#endif
-#ifdef CONFIG_SERIAL_TX3912_CONSOLE
- tx3912_console_init();
-#endif
-#ifdef CONFIG_TXX927_SERIAL_CONSOLE
- txx927_console_init();
-#endif
-#ifdef CONFIG_SERIAL_TXX9_CONSOLE
- txx9_serial_console_init();
-#endif
-#ifdef CONFIG_SIBYTE_SB1250_DUART_CONSOLE
- sb1250_serial_console_init();
-#endif
-#ifdef CONFIG_IP22_SERIAL
- sgi_serial_console_init();
-#endif
-}
-
-static struct tty_driver dev_tty_driver, dev_syscons_driver;
-#ifdef CONFIG_UNIX98_PTYS
-static struct tty_driver dev_ptmx_driver;
-#endif
-#ifdef CONFIG_HVC_CONSOLE
- hvc_console_init();
-#endif
-#ifdef CONFIG_VT
-static struct tty_driver dev_console_driver;
-#endif
-
-/*
- * Ok, now we can initialize the rest of the tty devices and can count
- * on memory allocations, interrupts etc..
- */
-void __init tty_init(void)
-{
- /*
- * dev_tty_driver and dev_console_driver are actually magic
- * devices which get redirected at open time. Nevertheless,
- * we register them so that register_chrdev is called
- * appropriately.
- */
- memset(&dev_tty_driver, 0, sizeof(struct tty_driver));
- dev_tty_driver.magic = TTY_DRIVER_MAGIC;
- dev_tty_driver.driver_name = "/dev/tty";
- dev_tty_driver.name = dev_tty_driver.driver_name + 5;
- dev_tty_driver.name_base = 0;
- dev_tty_driver.major = TTYAUX_MAJOR;
- dev_tty_driver.minor_start = 0;
- dev_tty_driver.num = 1;
- dev_tty_driver.type = TTY_DRIVER_TYPE_SYSTEM;
- dev_tty_driver.subtype = SYSTEM_TYPE_TTY;
-
- if (tty_register_driver(&dev_tty_driver))
- panic("Couldn't register /dev/tty driver\n");
-
- dev_syscons_driver = dev_tty_driver;
- dev_syscons_driver.driver_name = "/dev/console";
- dev_syscons_driver.name = dev_syscons_driver.driver_name + 5;
- dev_syscons_driver.major = TTYAUX_MAJOR;
- dev_syscons_driver.minor_start = 1;
- dev_syscons_driver.type = TTY_DRIVER_TYPE_SYSTEM;
- dev_syscons_driver.subtype = SYSTEM_TYPE_SYSCONS;
-
- if (tty_register_driver(&dev_syscons_driver))
- panic("Couldn't register /dev/console driver\n");
-
- /* console calls tty_register_driver() before kmalloc() works.
- * Thus, we can't devfs_register() then. Do so now, instead.
- */
-#ifdef CONFIG_VT
- con_init_devfs();
-#endif
-
-#ifdef CONFIG_UNIX98_PTYS
- dev_ptmx_driver = dev_tty_driver;
- dev_ptmx_driver.driver_name = "/dev/ptmx";
- dev_ptmx_driver.name = dev_ptmx_driver.driver_name + 5;
- dev_ptmx_driver.major= MAJOR(PTMX_DEV);
- dev_ptmx_driver.minor_start = MINOR(PTMX_DEV);
- dev_ptmx_driver.type = TTY_DRIVER_TYPE_SYSTEM;
- dev_ptmx_driver.subtype = SYSTEM_TYPE_SYSPTMX;
-
- if (tty_register_driver(&dev_ptmx_driver))
- panic("Couldn't register /dev/ptmx driver\n");
-#endif
-
-#ifdef CONFIG_VT
- dev_console_driver = dev_tty_driver;
- dev_console_driver.driver_name = "/dev/vc/0";
- dev_console_driver.name = dev_console_driver.driver_name + 5;
- dev_console_driver.major = TTY_MAJOR;
- dev_console_driver.type = TTY_DRIVER_TYPE_SYSTEM;
- dev_console_driver.subtype = SYSTEM_TYPE_CONSOLE;
-
- if (tty_register_driver(&dev_console_driver))
- panic("Couldn't register /dev/tty0 driver\n");
-
- kbd_init();
-#endif
-
-#ifdef CONFIG_SGI_L1_SERIAL_CONSOLE
- if (ia64_platform_is("sn2")) {
- sn_sal_serial_console_init();
- return; /* only one console right now for SN2 */
- }
-#endif
-#ifdef CONFIG_ESPSERIAL /* init ESP before rs, so rs doesn't see the port */
- espserial_init();
-#endif
-#if defined(CONFIG_MVME162_SCC) || defined(CONFIG_BVME6000_SCC) ||
defined(CONFIG_MVME147_SCC)
- vme_scc_init();
-#endif
-#ifdef CONFIG_SERIAL_TX3912
- tx3912_rs_init();
-#endif
-#ifdef CONFIG_ROCKETPORT
- rp_init();
-#endif
-#ifdef CONFIG_SERIAL167
- serial167_init();
-#endif
-#ifdef CONFIG_CYCLADES
- cy_init();
-#endif
-#ifdef CONFIG_STALLION
- stl_init();
-#endif
-#ifdef CONFIG_ISTALLION
- stli_init();
-#endif
-#ifdef CONFIG_DIGI
- pcxe_init();
-#endif
-#ifdef CONFIG_DIGIEPCA
- pc_init();
-#endif
-#ifdef CONFIG_SPECIALIX
- specialix_init();
-#endif
-#if (defined(CONFIG_8xx) || defined(CONFIG_CPM2))
- rs_8xx_init();
-#endif /* CONFIG_8xx */
- pty_init();
-#ifdef CONFIG_MOXA_SMARTIO
- mxser_init();
-#endif
-#ifdef CONFIG_MOXA_INTELLIO
- moxa_init();
-#endif
-#ifdef CONFIG_VT
- vcs_init();
-#endif
-#ifdef CONFIG_TN3270
- tub3270_init();
-#endif
-#ifdef CONFIG_TN3215
- tty3215_init();
-#endif
-#ifdef CONFIG_HWC
- hwc_tty_init();
-#endif
-#ifdef CONFIG_A2232
- a2232board_init();
-#endif
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/drivers/scsi/aic7xxx/Makefile
--- a/linux-2.4.30-xen-sparse/drivers/scsi/aic7xxx/Makefile Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,97 +0,0 @@
-#
-# drivers/scsi/aic7xxx/Makefile
-#
-# Makefile for the Linux aic7xxx SCSI driver.
-#
-
-O_TARGET := aic7xxx_drv.o
-
-list-multi := aic7xxx.o aic79xx.o
-
-obj-$(CONFIG_SCSI_AIC7XXX) += aic7xxx.o
-ifeq ($(CONFIG_PCI),y)
-obj-$(CONFIG_SCSI_AIC79XX) += aic79xx.o
-endif
-
-EXTRA_CFLAGS += -I$(TOPDIR)/drivers/scsi -Werror
-#EXTRA_CFLAGS += -g
-
-# Platform Specific Files
-obj-aic7xxx = aic7xxx_osm.o aic7xxx_proc.o
-
-# Core Files
-obj-aic7xxx += aic7xxx_core.o aic7xxx_93cx6.o
-ifeq ($(CONFIG_AIC7XXX_REG_PRETTY_PRINT),y)
-obj-aic7xxx += aic7xxx_reg_print.o
-endif
-
-#EISA Specific Files
-AIC7XXX_EISA_ARCH = $(filter i386 alpha xen,$(ARCH))
-ifneq ($(AIC7XXX_EISA_ARCH),)
-obj-aic7xxx += aic7770.o
-# Platform Specific EISA Files
-obj-aic7xxx += aic7770_osm.o
-endif
-
-#PCI Specific Files
-ifeq ($(CONFIG_PCI),y)
-obj-aic7xxx += aic7xxx_pci.o
-# Platform Specific PCI Files
-obj-aic7xxx += aic7xxx_osm_pci.o
-endif
-
-# Platform Specific U320 Files
-obj-aic79xx = aic79xx_osm.o aic79xx_proc.o aic79xx_osm_pci.o
-# Core Files
-obj-aic79xx += aic79xx_core.o aic79xx_pci.o
-ifeq ($(CONFIG_AIC79XX_REG_PRETTY_PRINT),y)
-obj-aic79xx += aic79xx_reg_print.o
-endif
-
-# Override our module desitnation
-MOD_DESTDIR = $(shell cd .. && $(CONFIG_SHELL) $(TOPDIR)/scripts/pathdown.sh)
-
-include $(TOPDIR)/Rules.make
-
-aic7xxx_core.o: aic7xxx_seq.h
-$(obj-aic7xxx): aic7xxx_reg.h
-aic7xxx.o: aic7xxx_seq.h aic7xxx_reg.h $(obj-aic7xxx)
- $(LD) $(LD_RFLAG) -r -o $@ $(obj-aic7xxx)
-
-aic79xx_core.o: aic79xx_seq.h
-$(obj-aic79xx): aic79xx_reg.h
-aic79xx.o: aic79xx_seq.h aic79xx_reg.h $(obj-aic79xx)
- $(LD) $(LD_RFLAG) -r -o $@ $(obj-aic79xx)
-
-ifeq ($(CONFIG_AIC7XXX_BUILD_FIRMWARE),y)
-aic7xxx_gen = aic7xxx_seq.h aic7xxx_reg.h
-ifeq ($(CONFIG_AIC7XXX_REG_PRETTY_PRINT),y)
-aic7xxx_gen += aic7xxx_reg_print.c
-aic7xxx_asm_cmd = aicasm/aicasm -I. -r aic7xxx_reg.h \
- -p aic7xxx_reg_print.c -i aic7xxx_osm.h \
- -o aic7xxx_seq.h aic7xxx.seq
-else
-aic7xxx_asm_cmd = aicasm/aicasm -I. -r aic7xxx_reg.h \
- -o aic7xxx_seq.h aic7xxx.seq
-endif
-$(aic7xxx_gen): aic7xxx.seq aic7xxx.reg aicasm/aicasm
- $(aic7xxx_asm_cmd)
-endif
-
-ifeq ($(CONFIG_AIC79XX_BUILD_FIRMWARE),y)
-aic79xx_gen = aic79xx_seq.h aic79xx_reg.h
-ifeq ($(CONFIG_AIC79XX_REG_PRETTY_PRINT),y)
-aic79xx_gen += aic79xx_reg_print.c
-aic79xx_asm_cmd = aicasm/aicasm -I. -r aic79xx_reg.h \
- -p aic79xx_reg_print.c -i aic79xx_osm.h \
- -o aic79xx_seq.h aic79xx.seq
-else
-aic79xx_asm_cmd = aicasm/aicasm -I. -r aic79xx_reg.h \
- -o aic79xx_seq.h aic79xx.seq
-endif
-$(aic79xx_gen): aic79xx.seq aic79xx.reg aicasm/aicasm
- $(aic79xx_asm_cmd)
-endif
-
-aicasm/aicasm: aicasm/*.[chyl]
- $(MAKE) -C aicasm
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/asm-xen/bugs.h
--- a/linux-2.4.30-xen-sparse/include/asm-xen/bugs.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,53 +0,0 @@
-/*
- * include/asm-i386/bugs.h
- *
- * Copyright (C) 1994 Linus Torvalds
- *
- * Cyrix stuff, June 1998 by:
- * - Rafael R. Reilova (moved everything from head.S),
- * <rreilova@xxxxxxxxxxxx>
- * - Channing Corn (tests & fixes),
- * - Andrew D. Balsa (code cleanup).
- *
- * Pentium III FXSR, SSE support
- * Gareth Hughes <gareth@xxxxxxxxxxx>, May 2000
- */
-
-/*
- * This is included by init/main.c to check for architecture-dependent bugs.
- *
- * Needs:
- * void check_bugs(void);
- */
-
-#include <linux/config.h>
-#include <asm/processor.h>
-#include <asm/i387.h>
-#include <asm/msr.h>
-
-
-static void __init check_fpu(void)
-{
- boot_cpu_data.fdiv_bug = 0;
-}
-
-static void __init check_hlt(void)
-{
- boot_cpu_data.hlt_works_ok = 1;
-}
-
-static void __init check_bugs(void)
-{
- extern void __init boot_init_fpu(void);
-
- identify_cpu(&boot_cpu_data);
- boot_init_fpu();
-#ifndef CONFIG_SMP
- printk("CPU: ");
- print_cpu_info(&boot_cpu_data);
-#endif
- check_fpu();
- check_hlt();
- system_utsname.machine[1] = '0' +
- (boot_cpu_data.x86 > 6 ? 6 : boot_cpu_data.x86);
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/asm-xen/desc.h
--- a/linux-2.4.30-xen-sparse/include/asm-xen/desc.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,37 +0,0 @@
-#ifndef __ARCH_DESC_H
-#define __ARCH_DESC_H
-
-#include <asm/ldt.h>
-
-#ifndef __ASSEMBLY__
-
-struct desc_struct {
- unsigned long a,b;
-};
-
-struct Xgt_desc_struct {
- unsigned short size;
- unsigned long address __attribute__((packed));
-};
-
-extern struct desc_struct default_ldt[];
-
-static inline void clear_LDT(void)
-{
- xen_set_ldt(0, 0);
-}
-
-static inline void load_LDT(mm_context_t *pc)
-{
- void *segments = pc->ldt;
- int count = pc->size;
-
- if ( count == 0 )
- segments = NULL;
-
- xen_set_ldt((unsigned long)segments, count);
-}
-
-#endif /* __ASSEMBLY__ */
-
-#endif /* __ARCH_DESC_H__ */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/asm-xen/fixmap.h
--- a/linux-2.4.30-xen-sparse/include/asm-xen/fixmap.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,107 +0,0 @@
-/*
- * fixmap.h: compile-time virtual memory allocation
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1998 Ingo Molnar
- *
- * Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999
- */
-
-#ifndef _ASM_FIXMAP_H
-#define _ASM_FIXMAP_H
-
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <asm/apicdef.h>
-#include <asm/page.h>
-#include <asm-xen/gnttab.h>
-#ifdef CONFIG_HIGHMEM
-#include <linux/threads.h>
-#include <asm/kmap_types.h>
-#endif
-
-/*
- * Here we define all the compile-time 'special' virtual
- * addresses. The point is to have a constant address at
- * compile time, but to set the physical address only
- * in the boot process. We allocate these special addresses
- * from the end of virtual memory (0xfffff000) backwards.
- * Also this lets us do fail-safe vmalloc(), we
- * can guarantee that these special addresses and
- * vmalloc()-ed addresses never overlap.
- *
- * these 'compile-time allocated' memory buffers are
- * fixed-size 4k pages. (or larger if used with an increment
- * highger than 1) use fixmap_set(idx,phys) to associate
- * physical memory with fixmap indices.
- *
- * TLB entries of such buffers will not be flushed across
- * task switches.
- */
-
-enum fixed_addresses {
-#ifdef CONFIG_HIGHMEM
- FIX_KMAP_BEGIN, /* reserved pte's for temporary kernel mappings */
- FIX_KMAP_END = FIX_KMAP_BEGIN+(KM_TYPE_NR*NR_CPUS)-1,
-#endif
- FIX_BLKRING_BASE,
- FIX_NETRING0_BASE,
- FIX_NETRING1_BASE,
- FIX_NETRING2_BASE,
- FIX_NETRING3_BASE,
- FIX_SHARED_INFO,
- FIX_GNTTAB_BEGIN,
- FIX_GNTTAB_END = FIX_GNTTAB_BEGIN + NR_GRANT_FRAMES - 1,
-#ifdef CONFIG_VGA_CONSOLE
-#define NR_FIX_BTMAPS 32 /* 128KB For the Dom0 VGA Console A0000-C0000 */
-#else
-#define NR_FIX_BTMAPS 1 /* in case anyone wants it in future... */
-#endif
- FIX_BTMAP_END,
- FIX_BTMAP_BEGIN = FIX_BTMAP_END + NR_FIX_BTMAPS - 1,
- /* our bt_ioremap is permanent, unlike other architectures */
-
- __end_of_permanent_fixed_addresses,
- __end_of_fixed_addresses = __end_of_permanent_fixed_addresses
-};
-
-extern void __set_fixmap (enum fixed_addresses idx,
- unsigned long phys, pgprot_t flags);
-
-#define set_fixmap(idx, phys) \
- __set_fixmap(idx, phys, PAGE_KERNEL)
-/*
- * Some hardware wants to get fixmapped without caching.
- */
-#define set_fixmap_nocache(idx, phys) \
- __set_fixmap(idx, phys, PAGE_KERNEL_NOCACHE)
-
-extern void clear_fixmap(enum fixed_addresses idx);
-
-/*
- * used by vmalloc.c.
- *
- * Leave one empty page between vmalloc'ed areas and
- * the start of the fixmap, and leave one page empty
- * at the top of mem..
- */
-#define FIXADDR_TOP (HYPERVISOR_VIRT_START - 2*PAGE_SIZE)
-#define __FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT)
-#define FIXADDR_START (FIXADDR_TOP - __FIXADDR_SIZE)
-
-#define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT))
-
-/*
- * 'index to address' translation. If anyone tries to use the idx
- * directly without tranlation, we catch the bug with a NULL-deference
- * kernel oops. Illegal ranges of incoming indices are caught too.
- */
-static inline unsigned long fix_to_virt(unsigned int idx)
-{
- return __fix_to_virt(idx);
-}
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/asm-xen/highmem.h
--- a/linux-2.4.30-xen-sparse/include/asm-xen/highmem.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,132 +0,0 @@
-/*
- * highmem.h: virtual kernel memory mappings for high memory
- *
- * Used in CONFIG_HIGHMEM systems for memory pages which
- * are not addressable by direct kernel virtual addresses.
- *
- * Copyright (C) 1999 Gerhard Wichert, Siemens AG
- * Gerhard.Wichert@xxxxxxxxxxxxxx
- *
- *
- * Redesigned the x86 32-bit VM architecture to deal with
- * up to 16 Terabyte physical memory. With current x86 CPUs
- * we now support up to 64 Gigabytes physical RAM.
- *
- * Copyright (C) 1999 Ingo Molnar <mingo@xxxxxxxxxx>
- */
-
-#ifndef _ASM_HIGHMEM_H
-#define _ASM_HIGHMEM_H
-
-#ifdef __KERNEL__
-
-#include <linux/config.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <asm/kmap_types.h>
-#include <asm/pgtable.h>
-
-#ifdef CONFIG_DEBUG_HIGHMEM
-#define HIGHMEM_DEBUG 1
-#else
-#define HIGHMEM_DEBUG 0
-#endif
-
-/* declarations for highmem.c */
-extern unsigned long highstart_pfn, highend_pfn;
-
-extern pte_t *kmap_pte;
-extern pgprot_t kmap_prot;
-extern pte_t *pkmap_page_table;
-
-extern void kmap_init(void) __init;
-
-/*
- * Right now we initialize only a single pte table. It can be extended
- * easily, subsequent pte tables have to be allocated in one physical
- * chunk of RAM.
- */
-#define PKMAP_BASE (HYPERVISOR_VIRT_START - (1<<23))
-#ifdef CONFIG_X86_PAE
-#define LAST_PKMAP 512
-#else
-#define LAST_PKMAP 1024
-#endif
-#define LAST_PKMAP_MASK (LAST_PKMAP-1)
-#define PKMAP_NR(virt) ((virt-PKMAP_BASE) >> PAGE_SHIFT)
-#define PKMAP_ADDR(nr) (PKMAP_BASE + ((nr) << PAGE_SHIFT))
-
-extern void * FASTCALL(kmap_high(struct page *page, int nonblocking));
-extern void FASTCALL(kunmap_high(struct page *page));
-
-#define kmap(page) __kmap(page, 0)
-#define kmap_nonblock(page) __kmap(page, 1)
-
-static inline void *__kmap(struct page *page, int nonblocking)
-{
- if (in_interrupt())
- out_of_line_bug();
- if (page < highmem_start_page)
- return page_address(page);
- return kmap_high(page, nonblocking);
-}
-
-static inline void kunmap(struct page *page)
-{
- if (in_interrupt())
- out_of_line_bug();
- if (page < highmem_start_page)
- return;
- kunmap_high(page);
-}
-
-/*
- * The use of kmap_atomic/kunmap_atomic is discouraged - kmap/kunmap
- * gives a more generic (and caching) interface. But kmap_atomic can
- * be used in IRQ contexts, so in some (very limited) cases we need
- * it.
- */
-static inline void *kmap_atomic(struct page *page, enum km_type type)
-{
- enum fixed_addresses idx;
- unsigned long vaddr;
-
- if (page < highmem_start_page)
- return page_address(page);
-
- idx = type + KM_TYPE_NR*smp_processor_id();
- vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
-#if HIGHMEM_DEBUG
- if (!pte_none(*(kmap_pte-idx)))
- out_of_line_bug();
-#endif
- set_pte(kmap_pte-idx, mk_pte(page, kmap_prot));
- __flush_tlb_one(vaddr);
-
- return (void*) vaddr;
-}
-
-static inline void kunmap_atomic(void *kvaddr, enum km_type type)
-{
-#if HIGHMEM_DEBUG
- unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK;
- enum fixed_addresses idx = type + KM_TYPE_NR*smp_processor_id();
-
- if (vaddr < FIXADDR_START) // FIXME
- return;
-
- if (vaddr != __fix_to_virt(FIX_KMAP_BEGIN+idx))
- out_of_line_bug();
-
- /*
- * force other mappings to Oops if they'll try to access
- * this pte without first remap it
- */
- pte_clear(kmap_pte-idx);
- __flush_tlb_one(vaddr);
-#endif
-}
-
-#endif /* __KERNEL__ */
-
-#endif /* _ASM_HIGHMEM_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/asm-xen/hw_irq.h
--- a/linux-2.4.30-xen-sparse/include/asm-xen/hw_irq.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,61 +0,0 @@
-#ifndef _ASM_HW_IRQ_H
-#define _ASM_HW_IRQ_H
-
-/*
- * linux/include/asm/hw_irq.h
- *
- * (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar
- */
-
-#include <linux/config.h>
-#include <linux/smp.h>
-#include <asm/atomic.h>
-#include <asm/irq.h>
-
-#define SYSCALL_VECTOR 0x80
-
-extern int irq_vector[NR_IRQS];
-
-extern atomic_t irq_err_count;
-extern atomic_t irq_mis_count;
-
-extern char _stext, _etext;
-
-extern unsigned long prof_cpu_mask;
-extern unsigned int * prof_buffer;
-extern unsigned long prof_len;
-extern unsigned long prof_shift;
-
-/*
- * x86 profiling function, SMP safe. We might want to do this in
- * assembly totally?
- */
-static inline void x86_do_profile (unsigned long eip)
-{
- if (!prof_buffer)
- return;
-
- /*
- * Only measure the CPUs specified by /proc/irq/prof_cpu_mask.
- * (default is all CPUs.)
- */
- if (!((1<<smp_processor_id()) & prof_cpu_mask))
- return;
-
- eip -= (unsigned long) &_stext;
- eip >>= prof_shift;
- /*
- * Don't ignore out-of-bounds EIP values silently,
- * put them into the last histogram slot, so if
- * present, they will show up as a sharp peak.
- */
- if (eip > prof_len-1)
- eip = prof_len-1;
- atomic_inc((atomic_t *)&prof_buffer[eip]);
-}
-
-static inline void hw_resend_irq(struct hw_interrupt_type *h,
- unsigned int i)
-{}
-
-#endif /* _ASM_HW_IRQ_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/asm-xen/io.h
--- a/linux-2.4.30-xen-sparse/include/asm-xen/io.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,457 +0,0 @@
-#ifndef _ASM_IO_H
-#define _ASM_IO_H
-
-#include <linux/config.h>
-
-/*
- * This file contains the definitions for the x86 IO instructions
- * inb/inw/inl/outb/outw/outl and the "string versions" of the same
- * (insb/insw/insl/outsb/outsw/outsl). You can also use "pausing"
- * versions of the single-IO instructions (inb_p/inw_p/..).
- *
- * This file is not meant to be obfuscating: it's just complicated
- * to (a) handle it all in a way that makes gcc able to optimize it
- * as well as possible and (b) trying to avoid writing the same thing
- * over and over again with slight variations and possibly making a
- * mistake somewhere.
- */
-
-/*
- * Thanks to James van Artsdalen for a better timing-fix than
- * the two short jumps: using outb's to a nonexistent port seems
- * to guarantee better timings even on fast machines.
- *
- * On the other hand, I'd like to be sure of a non-existent port:
- * I feel a bit unsafe about using 0x80 (should be safe, though)
- *
- * Linus
- */
-
- /*
- * Bit simplified and optimized by Jan Hubicka
- * Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999.
- *
- * isa_memset_io, isa_memcpy_fromio, isa_memcpy_toio added,
- * isa_read[wl] and isa_write[wl] fixed
- * - Arnaldo Carvalho de Melo <acme@xxxxxxxxxxxxxxxx>
- */
-
-#define IO_SPACE_LIMIT 0xffff
-
-#define XQUAD_PORTIO_BASE 0xfe400000
-#define XQUAD_PORTIO_QUAD 0x40000 /* 256k per quad. */
-#define XQUAD_PORTIO_LEN 0x80000 /* Only remapping first 2 quads */
-
-#ifdef __KERNEL__
-
-#include <linux/vmalloc.h>
-
-/*
- * Temporary debugging check to catch old code using
- * unmapped ISA addresses. Will be removed in 2.4.
- */
-#if CONFIG_DEBUG_IOVIRT
- extern void *__io_virt_debug(unsigned long x, const char *file, int line);
- extern unsigned long __io_phys_debug(unsigned long x, const char *file, int
line);
- #define __io_virt(x) __io_virt_debug((unsigned long)(x), __FILE__, __LINE__)
-//#define __io_phys(x) __io_phys_debug((unsigned long)(x), __FILE__, __LINE__)
-#else
- #define __io_virt(x) ((void *)(x))
-//#define __io_phys(x) __pa(x)
-#endif
-
-/**
- * virt_to_phys - map virtual addresses to physical
- * @address: address to remap
- *
- * The returned physical address is the physical (CPU) mapping for
- * the memory address given. It is only valid to use this function on
- * addresses directly mapped or allocated via kmalloc.
- *
- * This function does not give bus mappings for DMA transfers. In
- * almost all conceivable cases a device driver should not be using
- * this function
- */
-
-static inline unsigned long virt_to_phys(volatile void * address)
-{
- return __pa(address);
-}
-
-/**
- * phys_to_virt - map physical address to virtual
- * @address: address to remap
- *
- * The returned virtual address is a current CPU mapping for
- * the memory address given. It is only valid to use this function on
- * addresses that have a kernel mapping
- *
- * This function does not handle bus mappings for DMA transfers. In
- * almost all conceivable cases a device driver should not be using
- * this function
- */
-
-static inline void * phys_to_virt(unsigned long address)
-{
- return __va(address);
-}
-
-/*
- * We define page_to_phys 'incorrectly' because it is used when merging blkdev
- * requests, and the correct thing to do there is to use machine addresses.
- */
-#define page_to_phys(_x) phys_to_machine(((_x) - mem_map) << PAGE_SHIFT)
-
-extern void * __ioremap(unsigned long offset, unsigned long size, unsigned
long flags);
-
-/**
- * ioremap - map bus memory into CPU space
- * @offset: bus address of the memory
- * @size: size of the resource to map
- *
- * ioremap performs a platform specific sequence of operations to
- * make bus memory CPU accessible via the readb/readw/readl/writeb/
- * writew/writel functions and the other mmio helpers. The returned
- * address is not guaranteed to be usable directly as a virtual
- * address.
- */
-
-static inline void * ioremap (unsigned long offset, unsigned long size)
-{
- return __ioremap(offset, size, 0);
-}
-
-/**
- * ioremap_nocache - map bus memory into CPU space
- * @offset: bus address of the memory
- * @size: size of the resource to map
- *
- * ioremap_nocache performs a platform specific sequence of operations to
- * make bus memory CPU accessible via the readb/readw/readl/writeb/
- * writew/writel functions and the other mmio helpers. The returned
- * address is not guaranteed to be usable directly as a virtual
- * address.
- *
- * This version of ioremap ensures that the memory is marked uncachable
- * on the CPU as well as honouring existing caching rules from things like
- * the PCI bus. Note that there are other caches and buffers on many
- * busses. In paticular driver authors should read up on PCI writes
- *
- * It's useful if some control registers are in such an area and
- * write combining or read caching is not desirable:
- */
-
-static inline void * ioremap_nocache (unsigned long offset, unsigned long size)
-{
- return __ioremap(offset, size, _PAGE_PCD);
-}
-
-extern void iounmap(void *addr);
-
-/*
- * bt_ioremap() and bt_iounmap() are for temporary early boot-time
- * mappings, before the real ioremap() is functional.
- * A boot-time mapping is currently limited to at most 16 pages.
- */
-extern void *bt_ioremap(unsigned long offset, unsigned long size);
-extern void bt_iounmap(void *addr, unsigned long size);
-
-#define virt_to_bus(_x) phys_to_machine(virt_to_phys(_x))
-#define bus_to_virt(_x) phys_to_virt(machine_to_phys(_x))
-#define page_to_bus(_x) phys_to_machine(((_x) - mem_map) << PAGE_SHIFT)
-#define bus_to_phys(_x) machine_to_phys(_x)
-#define bus_to_page(_x) (mem_map + (bus_to_phys(_x) >> PAGE_SHIFT))
-
-/*
- * readX/writeX() are used to access memory mapped devices. On some
- * architectures the memory mapped IO stuff needs to be accessed
- * differently. On the x86 architecture, we just read/write the
- * memory location directly.
- */
-
-#define readb(addr) (*(volatile unsigned char *) __io_virt(addr))
-#define readw(addr) (*(volatile unsigned short *) __io_virt(addr))
-#define readl(addr) (*(volatile unsigned int *) __io_virt(addr))
-#define __raw_readb readb
-#define __raw_readw readw
-#define __raw_readl readl
-
-#define writeb(b,addr) (*(volatile unsigned char *) __io_virt(addr) = (b))
-#define writew(b,addr) (*(volatile unsigned short *) __io_virt(addr) = (b))
-#define writel(b,addr) (*(volatile unsigned int *) __io_virt(addr) = (b))
-#define __raw_writeb writeb
-#define __raw_writew writew
-#define __raw_writel writel
-
-#define memset_io(a,b,c) __memset(__io_virt(a),(b),(c))
-#define memcpy_fromio(a,b,c) __memcpy((a),__io_virt(b),(c))
-#define memcpy_toio(a,b,c) __memcpy(__io_virt(a),(b),(c))
-
-/*
- * ISA space is 'always mapped' on a typical x86 system, no need to
- * explicitly ioremap() it. The fact that the ISA IO space is mapped
- * to PAGE_OFFSET is pure coincidence - it does not mean ISA values
- * are physical addresses. The following constant pointer can be
- * used as the IO-area pointer (it can be iounmapped as well, so the
- * analogy with PCI is quite large):
- */
-#define __ISA_IO_base ((char *)(PAGE_OFFSET))
-
-#define isa_readb(a) readb(__ISA_IO_base + (a))
-#define isa_readw(a) readw(__ISA_IO_base + (a))
-#define isa_readl(a) readl(__ISA_IO_base + (a))
-#define isa_writeb(b,a) writeb(b,__ISA_IO_base + (a))
-#define isa_writew(w,a) writew(w,__ISA_IO_base + (a))
-#define isa_writel(l,a) writel(l,__ISA_IO_base + (a))
-#define isa_memset_io(a,b,c) memset_io(__ISA_IO_base + (a),(b),(c))
-#define isa_memcpy_fromio(a,b,c) memcpy_fromio((a),__ISA_IO_base +
(b),(c))
-#define isa_memcpy_toio(a,b,c) memcpy_toio(__ISA_IO_base + (a),(b),(c))
-
-
-/*
- * Again, i386 does not require mem IO specific function.
- */
-
-#define eth_io_copy_and_sum(a,b,c,d)
eth_copy_and_sum((a),__io_virt(b),(c),(d))
-#define isa_eth_io_copy_and_sum(a,b,c,d)
eth_copy_and_sum((a),__io_virt(__ISA_IO_base + (b)),(c),(d))
-
-/**
- * check_signature - find BIOS signatures
- * @io_addr: mmio address to check
- * @signature: signature block
- * @length: length of signature
- *
- * Perform a signature comparison with the mmio address io_addr. This
- * address should have been obtained by ioremap.
- * Returns 1 on a match.
- */
-
-static inline int check_signature(unsigned long io_addr,
- const unsigned char *signature, int length)
-{
- int retval = 0;
- do {
- if (readb(io_addr) != *signature)
- goto out;
- io_addr++;
- signature++;
- length--;
- } while (length);
- retval = 1;
-out:
- return retval;
-}
-
-/**
- * isa_check_signature - find BIOS signatures
- * @io_addr: mmio address to check
- * @signature: signature block
- * @length: length of signature
- *
- * Perform a signature comparison with the ISA mmio address io_addr.
- * Returns 1 on a match.
- *
- * This function is deprecated. New drivers should use ioremap and
- * check_signature.
- */
-
-
-static inline int isa_check_signature(unsigned long io_addr,
- const unsigned char *signature, int length)
-{
- int retval = 0;
- do {
- if (isa_readb(io_addr) != *signature)
- goto out;
- io_addr++;
- signature++;
- length--;
- } while (length);
- retval = 1;
-out:
- return retval;
-}
-
-/*
- * Cache management
- *
- * This needed for two cases
- * 1. Out of order aware processors
- * 2. Accidentally out of order processors (PPro errata #51)
- */
-
-#if defined(CONFIG_X86_OOSTORE) || defined(CONFIG_X86_PPRO_FENCE)
-
-static inline void flush_write_buffers(void)
-{
- __asm__ __volatile__ ("lock; addl $0,0(%%esp)": : :"memory");
-}
-
-#define dma_cache_inv(_start,_size) flush_write_buffers()
-#define dma_cache_wback(_start,_size) flush_write_buffers()
-#define dma_cache_wback_inv(_start,_size) flush_write_buffers()
-
-#else
-
-/* Nothing to do */
-
-#define dma_cache_inv(_start,_size) do { } while (0)
-#define dma_cache_wback(_start,_size) do { } while (0)
-#define dma_cache_wback_inv(_start,_size) do { } while (0)
-#define flush_write_buffers()
-
-#endif
-
-#endif /* __KERNEL__ */
-
-#ifdef SLOW_IO_BY_JUMPING
-#define __SLOW_DOWN_IO "\njmp 1f\n1:\tjmp 1f\n1:"
-#elif defined(__UNSAFE_IO__)
-#define __SLOW_DOWN_IO "\noutb %%al,$0x80"
-#else
-#define __SLOW_DOWN_IO "\n1: outb %%al,$0x80\n" \
- "2:\n" \
- ".section __ex_table,\"a\"\n\t" \
- ".align 4\n\t" \
- ".long 1b,2b\n" \
- ".previous"
-#endif
-
-#ifdef REALLY_SLOW_IO
-#define __FULL_SLOW_DOWN_IO __SLOW_DOWN_IO __SLOW_DOWN_IO __SLOW_DOWN_IO
__SLOW_DOWN_IO
-#else
-#define __FULL_SLOW_DOWN_IO __SLOW_DOWN_IO
-#endif
-
-#ifdef CONFIG_MULTIQUAD
-extern void *xquad_portio; /* Where the IO area was mapped */
-#endif /* CONFIG_MULTIQUAD */
-
-/*
- * Talk about misusing macros..
- */
-#define __OUT1(s,x) \
-static inline void out##s(unsigned x value, unsigned short port) {
-
-#ifdef __UNSAFE_IO__
-#define __OUT2(s,s1,s2) \
-__asm__ __volatile__ ("out" #s " %" s1 "0,%" s2 "1"
-#else
-#define __OUT2(s,s1,s2) \
-__asm__ __volatile__ ("1: out" #s " %" s1 "0,%" s2 "1\n" \
- "2:\n" \
- ".section __ex_table,\"a\"\n\t" \
- ".align 4\n\t" \
- ".long 1b,2b\n" \
- ".previous"
-#endif
-
-#if defined (CONFIG_MULTIQUAD) && !defined(STANDALONE)
-#define __OUTQ(s,ss,x) /* Do the equivalent of the portio op on quads */ \
-static inline void out##ss(unsigned x value, unsigned short port) { \
- if (xquad_portio) \
- write##s(value, (unsigned long) xquad_portio + port); \
- else /* We're still in early boot, running on quad 0 */ \
- out##ss##_local(value, port); \
-} \
-static inline void out##ss##_quad(unsigned x value, unsigned short port, int
quad) { \
- if (xquad_portio) \
- write##s(value, (unsigned long) xquad_portio +
(XQUAD_PORTIO_QUAD*quad)\
- + port); \
-}
-
-#define __INQ(s,ss) /* Do the equivalent of the portio op on quads */ \
-static inline RETURN_TYPE in##ss(unsigned short port) { \
- if (xquad_portio) \
- return read##s((unsigned long) xquad_portio + port); \
- else /* We're still in early boot, running on quad 0 */ \
- return in##ss##_local(port); \
-} \
-static inline RETURN_TYPE in##ss##_quad(unsigned short port, int quad) { \
- if (xquad_portio) \
- return read##s((unsigned long) xquad_portio +
(XQUAD_PORTIO_QUAD*quad)\
- + port); \
- else\
- return 0;\
-}
-#endif /* CONFIG_MULTIQUAD && !STANDALONE */
-
-#if !defined(CONFIG_MULTIQUAD) || defined(STANDALONE)
-#define __OUT(s,s1,x) \
-__OUT1(s,x) __OUT2(s,s1,"w") : : "a" (value), "Nd" (port)); } \
-__OUT1(s##_p,x) __OUT2(s,s1,"w") __FULL_SLOW_DOWN_IO : : "a" (value), "Nd"
(port));}
-#else
-/* Make the default portio routines operate on quad 0 */
-#define __OUT(s,s1,x) \
-__OUT1(s##_local,x) __OUT2(s,s1,"w") : : "a" (value), "Nd" (port)); } \
-__OUT1(s##_p_local,x) __OUT2(s,s1,"w") __FULL_SLOW_DOWN_IO : : "a" (value),
"Nd" (port));} \
-__OUTQ(s,s,x) \
-__OUTQ(s,s##_p,x)
-#endif /* !CONFIG_MULTIQUAD || STANDALONE */
-
-#define __IN1(s) \
-static inline RETURN_TYPE in##s(unsigned short port) { RETURN_TYPE _v;
-
-#ifdef __UNSAFE_IO__
-#define __IN2(s,s1,s2) \
-__asm__ __volatile__ ("in" #s " %" s2 "1,%" s1 "0"
-#else
-#define __IN2(s,s1,s2) \
-__asm__ __volatile__ ("1: in" #s " %" s2 "1,%" s1 "0\n" \
- "2:\n" \
- ".section .fixup,\"ax\"\n" \
- "3: mov" #s " $~0,%" s1 "0\n\t" \
- "jmp 2b\n" \
- ".previous\n" \
- ".section __ex_table,\"a\"\n\t" \
- ".align 4\n\t" \
- ".long 1b,3b\n" \
- ".previous"
-#endif
-
-#if !defined(CONFIG_MULTIQUAD) || defined(STANDALONE)
-#define __IN(s,s1,i...) \
-__IN1(s) __IN2(s,s1,"w") : "=a" (_v) : "Nd" (port) ,##i ); return _v; } \
-__IN1(s##_p) __IN2(s,s1,"w") __FULL_SLOW_DOWN_IO : "=a" (_v) : "Nd" (port)
,##i ); return _v; }
-#else
-/* Make the default portio routines operate on quad 0 */
-#define __IN(s,s1,i...) \
-__IN1(s##_local) __IN2(s,s1,"w") : "=a" (_v) : "Nd" (port) ,##i ); return _v;
} \
-__IN1(s##_p_local) __IN2(s,s1,"w") __FULL_SLOW_DOWN_IO : "=a" (_v) : "Nd"
(port) ,##i ); return _v; } \
-__INQ(s,s) \
-__INQ(s,s##_p)
-#endif /* !CONFIG_MULTIQUAD || STANDALONE */
-
-#define __INS(s) \
-static inline void ins##s(unsigned short port, void * addr, unsigned long
count) \
-{ __asm__ __volatile__ ("rep ; ins" #s \
-: "=D" (addr), "=c" (count) : "d" (port),"0" (addr),"1" (count)); }
-
-#define __OUTS(s) \
-static inline void outs##s(unsigned short port, const void * addr, unsigned
long count) \
-{ __asm__ __volatile__ ("rep ; outs" #s \
-: "=S" (addr), "=c" (count) : "d" (port),"0" (addr),"1" (count)); }
-
-#define RETURN_TYPE unsigned char
-__IN(b,"")
-#undef RETURN_TYPE
-#define RETURN_TYPE unsigned short
-__IN(w,"")
-#undef RETURN_TYPE
-#define RETURN_TYPE unsigned int
-__IN(l,"")
-#undef RETURN_TYPE
-
-__OUT(b,"b",char)
-__OUT(w,"w",short)
-__OUT(l,,int)
-
-__INS(b)
-__INS(w)
-__INS(l)
-
-__OUTS(b)
-__OUTS(w)
-__OUTS(l)
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/asm-xen/irq.h
--- a/linux-2.4.30-xen-sparse/include/asm-xen/irq.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,65 +0,0 @@
-#ifndef _ASM_IRQ_H
-#define _ASM_IRQ_H
-
-/*
- * linux/include/asm/irq.h
- *
- * (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar
- *
- * IRQ/IPI changes taken from work by Thomas Radke
- * <tomsoft@xxxxxxxxxxxxxxxxxxxxxxxxx>
- */
-
-#include <linux/config.h>
-#include <asm/hypervisor.h>
-#include <asm/ptrace.h>
-
-/*
- * The flat IRQ space is divided into two regions:
- * 1. A one-to-one mapping of real physical IRQs. This space is only used
- * if we have physical device-access privilege. This region is at the
- * start of the IRQ space so that existing device drivers do not need
- * to be modified to translate physical IRQ numbers into our IRQ space.
- * 3. A dynamic mapping of inter-domain and Xen-sourced virtual IRQs. These
- * are bound using the provided bind/unbind functions.
- */
-
-#define PIRQ_BASE 0
-#define NR_PIRQS 128
-
-#define DYNIRQ_BASE (PIRQ_BASE + NR_PIRQS)
-#define NR_DYNIRQS 128
-
-#define NR_IRQS (NR_PIRQS + NR_DYNIRQS)
-
-#define pirq_to_irq(_x) ((_x) + PIRQ_BASE)
-#define irq_to_pirq(_x) ((_x) - PIRQ_BASE)
-
-#define dynirq_to_irq(_x) ((_x) + DYNIRQ_BASE)
-#define irq_to_dynirq(_x) ((_x) - DYNIRQ_BASE)
-
-/* Dynamic binding of event channels and VIRQ sources to Linux IRQ space. */
-extern int bind_virq_to_irq(int virq);
-extern void unbind_virq_from_irq(int virq);
-extern int bind_evtchn_to_irq(int evtchn);
-extern void unbind_evtchn_from_irq(int evtchn);
-
-static __inline__ int irq_cannonicalize(int irq)
-{
- return (irq == 2) ? 9 : irq;
-}
-
-extern void disable_irq(unsigned int);
-extern void disable_irq_nosync(unsigned int);
-extern void enable_irq(unsigned int);
-
-extern void irq_suspend(void);
-extern void irq_resume(void);
-
-
-#define CPU_MASK_NONE 0
-
-/* XXX SMH: no-op for compat w/ 2.6 shared files */
-#define irq_ctx_init(cpu) do { ; } while (0)
-
-#endif /* _ASM_IRQ_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/asm-xen/keyboard.h
--- a/linux-2.4.30-xen-sparse/include/asm-xen/keyboard.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,74 +0,0 @@
-/*
- * linux/include/asm-i386/keyboard.h
- *
- * Created 3 Nov 1996 by Geert Uytterhoeven
- */
-
-/*
- * This file contains the i386 architecture specific keyboard definitions
- */
-
-#ifndef _I386_KEYBOARD_H
-#define _I386_KEYBOARD_H
-
-#ifdef __KERNEL__
-
-#include <linux/kernel.h>
-#include <linux/ioport.h>
-#include <linux/kd.h>
-#include <linux/pm.h>
-#include <asm/io.h>
-
-#define KEYBOARD_IRQ 1
-#define DISABLE_KBD_DURING_INTERRUPTS 0
-
-extern int pckbd_setkeycode(unsigned int scancode, unsigned int keycode);
-extern int pckbd_getkeycode(unsigned int scancode);
-extern int pckbd_translate(unsigned char scancode, unsigned char *keycode,
- char raw_mode);
-extern char pckbd_unexpected_up(unsigned char keycode);
-extern void pckbd_leds(unsigned char leds);
-extern void pckbd_init_hw(void);
-extern int pckbd_pm_resume(struct pm_dev *, pm_request_t, void *);
-extern pm_callback pm_kbd_request_override;
-extern unsigned char pckbd_sysrq_xlate[128];
-
-#define kbd_setkeycode pckbd_setkeycode
-#define kbd_getkeycode pckbd_getkeycode
-#define kbd_translate pckbd_translate
-#define kbd_unexpected_up pckbd_unexpected_up
-#define kbd_leds pckbd_leds
-#define kbd_init_hw pckbd_init_hw
-#define kbd_sysrq_xlate pckbd_sysrq_xlate
-
-#define SYSRQ_KEY 0x54
-
-#define kbd_controller_present() (xen_start_info.flags & SIF_INITDOMAIN)
-
-/* resource allocation */
-#define kbd_request_region()
-#define kbd_request_irq(handler) request_irq(KEYBOARD_IRQ, handler, 0, \
- "keyboard", NULL)
-
-/* How to access the keyboard macros on this platform. */
-#define kbd_read_input() inb(KBD_DATA_REG)
-#define kbd_read_status() inb(KBD_STATUS_REG)
-#define kbd_write_output(val) outb(val, KBD_DATA_REG)
-#define kbd_write_command(val) outb(val, KBD_CNTL_REG)
-
-/* Some stoneage hardware needs delays after some operations. */
-#define kbd_pause() do { } while(0)
-
-/*
- * Machine specific bits for the PS/2 driver
- */
-
-#define AUX_IRQ 12
-
-#define aux_request_irq(hand, dev_id) \
- request_irq(AUX_IRQ, hand, SA_SHIRQ, "PS/2 Mouse", dev_id)
-
-#define aux_free_irq(dev_id) free_irq(AUX_IRQ, dev_id)
-
-#endif /* __KERNEL__ */
-#endif /* _I386_KEYBOARD_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/asm-xen/mmu_context.h
--- a/linux-2.4.30-xen-sparse/include/asm-xen/mmu_context.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,59 +0,0 @@
-#ifndef __I386_MMU_CONTEXT_H
-#define __I386_MMU_CONTEXT_H
-
-#include <linux/config.h>
-#include <asm/desc.h>
-#include <asm/atomic.h>
-#include <asm/pgalloc.h>
-
-/*
- * hooks to add arch specific data into the mm struct.
- * Note that destroy_context is called even if init_new_context
- * fails.
- */
-int init_new_context(struct task_struct *tsk, struct mm_struct *mm);
-void destroy_context(struct mm_struct *mm);
-
-#ifdef CONFIG_SMP
-
-static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct
*tsk, unsigned cpu)
-{
- if(cpu_tlbstate[cpu].state == TLBSTATE_OK)
- cpu_tlbstate[cpu].state = TLBSTATE_LAZY;
-}
-#else
-static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct
*tsk, unsigned cpu)
-{
-}
-#endif
-
-extern pgd_t *cur_pgd;
-
-static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
struct task_struct *tsk, unsigned cpu)
-{
- struct mmuext_op _op[2], *op = _op;
- if (prev != next) {
- /* stop flush ipis for the previous mm */
- clear_bit(cpu, &prev->cpu_vm_mask);
- /* Re-load page tables */
- cur_pgd = next->pgd;
- op->cmd = MMUEXT_NEW_BASEPTR;
- op->mfn = pfn_to_mfn(__pa(next->pgd) >> PAGE_SHIFT);
- op++;
- /* load_LDT, if either the previous or next thread
- * has a non-default LDT.
- */
- if (next->context.size+prev->context.size) {
- op->cmd = MMUEXT_SET_LDT;
- op->linear_addr = (unsigned long)next->context.ldt;
- op->nr_ents = next->context.size;
- op++;
- }
- BUG_ON(HYPERVISOR_mmuext_op(_op, op-_op, NULL, DOMID_SELF));
- }
-}
-
-#define activate_mm(prev, next) \
- switch_mm((prev),(next),NULL,smp_processor_id())
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/asm-xen/module.h
--- a/linux-2.4.30-xen-sparse/include/asm-xen/module.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,14 +0,0 @@
-#ifndef _ASM_I386_MODULE_H
-#define _ASM_I386_MODULE_H
-/*
- * This file contains the i386 architecture specific module code.
- */
-
-extern int xen_module_init(struct module *mod);
-
-#define module_map(x) vmalloc(x)
-#define module_unmap(x) vfree(x)
-#define module_arch_init(x) xen_module_init(x)
-#define arch_init_modules(x) do { } while (0)
-
-#endif /* _ASM_I386_MODULE_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/asm-xen/page.h
--- a/linux-2.4.30-xen-sparse/include/asm-xen/page.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,178 +0,0 @@
-#ifndef _I386_PAGE_H
-#define _I386_PAGE_H
-
-/* PAGE_SHIFT determines the page size */
-#define PAGE_SHIFT 12
-#define PAGE_SIZE (1UL << PAGE_SHIFT)
-#define PAGE_MASK (~(PAGE_SIZE-1))
-
-#ifdef __KERNEL__
-#ifndef __ASSEMBLY__
-
-#include <linux/config.h>
-#include <linux/string.h>
-#include <asm/types.h>
-#include <asm-xen/xen-public/xen.h>
-
-#ifdef CONFIG_XEN_SCRUB_PAGES
-#define scrub_pages(_p,_n) memset((void *)(_p), 0, (_n) << PAGE_SHIFT)
-#else
-#define scrub_pages(_p,_n) ((void)0)
-#endif
-
-#ifdef CONFIG_X86_USE_3DNOW
-
-#include <asm/mmx.h>
-
-#define clear_page(page) mmx_clear_page((void *)(page))
-#define copy_page(to,from) mmx_copy_page(to,from)
-
-#else
-
-/*
- * On older X86 processors its not a win to use MMX here it seems.
- * Maybe the K6-III ?
- */
-
-#define clear_page(page) memset((void *)(page), 0, PAGE_SIZE)
-#define copy_page(to,from) memcpy((void *)(to), (void *)(from), PAGE_SIZE)
-
-#endif
-
-#define clear_user_page(page, vaddr) clear_page(page)
-#define copy_user_page(to, from, vaddr) copy_page(to, from)
-
-/**** MACHINE <-> PHYSICAL CONVERSION MACROS ****/
-extern unsigned int *phys_to_machine_mapping;
-#define pfn_to_mfn(_pfn) ((unsigned long)(phys_to_machine_mapping[(_pfn)]))
-#define mfn_to_pfn(_mfn) ((unsigned long)(machine_to_phys_mapping[(_mfn)]))
-static inline unsigned long phys_to_machine(unsigned long phys)
-{
- unsigned long machine = pfn_to_mfn(phys >> PAGE_SHIFT);
- machine = (machine << PAGE_SHIFT) | (phys & ~PAGE_MASK);
- return machine;
-}
-static inline unsigned long machine_to_phys(unsigned long machine)
-{
- unsigned long phys = mfn_to_pfn(machine >> PAGE_SHIFT);
- phys = (phys << PAGE_SHIFT) | (machine & ~PAGE_MASK);
- return phys;
-}
-
-/*
- * These are used to make use of C type-checking..
- */
-#if CONFIG_X86_PAE
-typedef struct { unsigned long pte_low, pte_high; } pte_t;
-typedef struct { unsigned long long pmd; } pmd_t;
-typedef struct { unsigned long long pgd; } pgd_t;
-#define pte_val(x) ((x).pte_low | ((unsigned long long)(x).pte_high << 32))
-#else
-typedef struct { unsigned long pte_low; } pte_t;
-typedef struct { unsigned long pmd; } pmd_t;
-typedef struct { unsigned long pgd; } pgd_t;
-static inline unsigned long pte_val(pte_t x)
-{
- unsigned long ret = x.pte_low;
- if ( (ret & 1) ) ret = machine_to_phys(ret);
- return ret;
-}
-#define pte_val_ma(x) ((x).pte_low)
-#endif
-#define PTE_MASK PAGE_MASK
-
-typedef struct { unsigned long pgprot; } pgprot_t;
-
-static inline unsigned long pmd_val(pmd_t x)
-{
- unsigned long ret = x.pmd;
- if ( ret ) ret = machine_to_phys(ret) | 1;
- return ret;
-}
-#define pmd_val_ma(x) ((x).pmd)
-#define pgd_val(x) ({ BUG(); (unsigned long)0; })
-#define pgprot_val(x) ((x).pgprot)
-
-#define __pte(x) ({ unsigned long _x = (x); \
- (((_x)&1) ? ((pte_t) {phys_to_machine(_x)}) : ((pte_t) {(_x)})); })
-#define __pte_ma(x) ((pte_t) { (x) } )
-#define __pmd(x) ({ unsigned long _x = (x); \
- (((_x)&1) ? ((pmd_t) {phys_to_machine(_x)}) : ((pmd_t) {(_x)})); })
-#define __pgd(x) ({ BUG(); (pgprot_t) { 0 }; })
-#define __pgprot(x) ((pgprot_t) { (x) } )
-
-#endif /* !__ASSEMBLY__ */
-
-/* to align the pointer to the (next) page boundary */
-#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
-
-/*
- * This handles the memory map.. We could make this a config
- * option, but too many people screw it up, and too few need
- * it.
- *
- * A __PAGE_OFFSET of 0xC0000000 means that the kernel has
- * a virtual address space of one gigabyte, which limits the
- * amount of physical memory you can use to about 950MB.
- *
- * If you want more physical memory than this then see the CONFIG_HIGHMEM4G
- * and CONFIG_HIGHMEM64G options in the kernel configuration.
- */
-
-#define __PAGE_OFFSET (0xC0000000)
-
-#ifndef __ASSEMBLY__
-
-/*
- * Tell the user there is some problem. Beep too, so we can
- * see^H^H^Hhear bugs in early bootup as well!
- * The offending file and line are encoded after the "officially
- * undefined" opcode for parsing in the trap handler.
- */
-
-#if 1 /* Set to zero for a slightly smaller kernel */
-#define BUG() \
- __asm__ __volatile__( "ud2\n" \
- "\t.word %c0\n" \
- "\t.long %c1\n" \
- : : "i" (__LINE__), "i" (__FILE__))
-#else
-#define BUG() __asm__ __volatile__("ud2\n")
-#endif
-
-#define PAGE_BUG(page) do { \
- BUG(); \
-} while (0)
-
-/* Pure 2^n version of get_order */
-static __inline__ int get_order(unsigned long size)
-{
- int order;
-
- size = (size-1) >> (PAGE_SHIFT-1);
- order = -1;
- do {
- size >>= 1;
- order++;
- } while (size);
- return order;
-}
-
-#endif /* __ASSEMBLY__ */
-
-#define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET)
-#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET)
-#define __va(x) ((void *)((unsigned
long)(x)+PAGE_OFFSET))
-#define virt_to_page(kaddr) (mem_map + (__pa(kaddr) >> PAGE_SHIFT))
-#define VALID_PAGE(page) ((page - mem_map) < max_mapnr)
-
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
-/* VIRT <-> MACHINE conversion */
-#define virt_to_machine(_a) (phys_to_machine(__pa(_a)))
-#define machine_to_virt(_m) (__va(machine_to_phys(_m)))
-
-#endif /* __KERNEL__ */
-
-#endif /* _I386_PAGE_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/asm-xen/pci.h
--- a/linux-2.4.30-xen-sparse/include/asm-xen/pci.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,283 +0,0 @@
-#ifndef __i386_PCI_H
-#define __i386_PCI_H
-
-#include <linux/config.h>
-
-#ifdef __KERNEL__
-
-/* Can be used to override the logic in pci_scan_bus for skipping
- already-configured bus numbers - to be used for buggy BIOSes
- or architectures with incomplete PCI setup by the loader */
-
-#ifdef CONFIG_PCI
-extern unsigned int pcibios_assign_all_busses(void);
-#else
-#define pcibios_assign_all_busses() 0
-#endif
-#define pcibios_scan_all_fns() 0
-
-extern unsigned long pci_mem_start;
-#define PCIBIOS_MIN_IO 0x1000
-#define PCIBIOS_MIN_MEM (pci_mem_start)
-
-void pcibios_config_init(void);
-struct pci_bus * pcibios_scan_root(int bus);
-extern int (*pci_config_read)(int seg, int bus, int dev, int fn, int reg, int
len, u32 *value);
-extern int (*pci_config_write)(int seg, int bus, int dev, int fn, int reg, int
len, u32 value);
-
-void pcibios_set_master(struct pci_dev *dev);
-void pcibios_penalize_isa_irq(int irq);
-struct irq_routing_table *pcibios_get_irq_routing_table(void);
-int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
-
-/* Dynamic DMA mapping stuff.
- * i386 has everything mapped statically.
- */
-
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <asm/scatterlist.h>
-#include <linux/string.h>
-#include <asm/io.h>
-
-struct pci_dev;
-
-/* The networking and block device layers use this boolean for bounce
- * buffer decisions.
- */
-#define PCI_DMA_BUS_IS_PHYS (0)
-
-/* Allocate and map kernel buffer using consistent mode DMA for a device.
- * hwdev should be valid struct pci_dev pointer for PCI devices,
- * NULL for PCI-like buses (ISA, EISA).
- * Returns non-NULL cpu-view pointer to the buffer if successful and
- * sets *dma_addrp to the pci side dma address as well, else *dma_addrp
- * is undefined.
- */
-extern void *pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
- dma_addr_t *dma_handle);
-
-/* Free and unmap a consistent DMA buffer.
- * cpu_addr is what was returned from pci_alloc_consistent,
- * size must be the same as what as passed into pci_alloc_consistent,
- * and likewise dma_addr must be the same as what *dma_addrp was set to.
- *
- * References to the memory and mappings associated with cpu_addr/dma_addr
- * past this call are illegal.
- */
-extern void pci_free_consistent(struct pci_dev *hwdev, size_t size,
- void *vaddr, dma_addr_t dma_handle);
-
-/* Map a single buffer of the indicated size for DMA in streaming mode.
- * The 32-bit bus address to use is returned.
- *
- * Once the device is given the dma address, the device owns this memory
- * until either pci_unmap_single or pci_dma_sync_single is performed.
- */
-static inline dma_addr_t pci_map_single(struct pci_dev *hwdev, void *ptr,
- size_t size, int direction)
-{
- if (direction == PCI_DMA_NONE)
- out_of_line_bug();
- flush_write_buffers();
- return virt_to_bus(ptr);
-}
-
-/* Unmap a single streaming mode DMA translation. The dma_addr and size
- * must match what was provided for in a previous pci_map_single call. All
- * other usages are undefined.
- *
- * After this call, reads by the cpu to the buffer are guarenteed to see
- * whatever the device wrote there.
- */
-static inline void pci_unmap_single(struct pci_dev *hwdev, dma_addr_t dma_addr,
- size_t size, int direction)
-{
- if (direction == PCI_DMA_NONE)
- out_of_line_bug();
- /* Nothing to do */
-}
-
-/*
- * pci_{map,unmap}_single_page maps a kernel page to a dma_addr_t. identical
- * to pci_map_single, but takes a struct page instead of a virtual address
- */
-static inline dma_addr_t pci_map_page(struct pci_dev *hwdev, struct page *page,
- unsigned long offset, size_t size, int
direction)
-{
- if (direction == PCI_DMA_NONE)
- out_of_line_bug();
-
- return page_to_bus(page) + offset;
-}
-
-static inline void pci_unmap_page(struct pci_dev *hwdev, dma_addr_t
dma_address,
- size_t size, int direction)
-{
- if (direction == PCI_DMA_NONE)
- out_of_line_bug();
- /* Nothing to do */
-}
-
-/* pci_unmap_{page,single} is a nop so... */
-#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
-#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
-#define pci_unmap_addr(PTR, ADDR_NAME) (0)
-#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
-#define pci_unmap_len(PTR, LEN_NAME) (0)
-#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
-
-/* Map a set of buffers described by scatterlist in streaming
- * mode for DMA. This is the scather-gather version of the
- * above pci_map_single interface. Here the scatter gather list
- * elements are each tagged with the appropriate dma address
- * and length. They are obtained via sg_dma_{address,length}(SG).
- *
- * NOTE: An implementation may be able to use a smaller number of
- * DMA address/length pairs than there are SG table elements.
- * (for example via virtual mapping capabilities)
- * The routine returns the number of addr/length pairs actually
- * used, at most nents.
- *
- * Device ownership issues as mentioned above for pci_map_single are
- * the same here.
- */
-static inline int pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg,
- int nents, int direction)
-{
- int i;
-
- if (direction == PCI_DMA_NONE)
- out_of_line_bug();
-
- /*
- * temporary 2.4 hack
- */
- for (i = 0; i < nents; i++ ) {
- if (sg[i].address && sg[i].page)
- out_of_line_bug();
- else if (!sg[i].address && !sg[i].page)
- out_of_line_bug();
-
- if (sg[i].address)
- sg[i].dma_address = virt_to_bus(sg[i].address);
- else
- sg[i].dma_address = page_to_bus(sg[i].page) +
sg[i].offset;
- }
-
- flush_write_buffers();
- return nents;
-}
-
-/* Unmap a set of streaming mode DMA translations.
- * Again, cpu read rules concerning calls here are the same as for
- * pci_unmap_single() above.
- */
-static inline void pci_unmap_sg(struct pci_dev *hwdev, struct scatterlist *sg,
- int nents, int direction)
-{
- if (direction == PCI_DMA_NONE)
- out_of_line_bug();
- /* Nothing to do */
-}
-
-/* Make physical memory consistent for a single
- * streaming mode DMA translation after a transfer.
- *
- * If you perform a pci_map_single() but wish to interrogate the
- * buffer using the cpu, yet do not wish to teardown the PCI dma
- * mapping, you must call this function before doing so. At the
- * next point you give the PCI dma address back to the card, the
- * device again owns the buffer.
- */
-static inline void pci_dma_sync_single(struct pci_dev *hwdev,
- dma_addr_t dma_handle,
- size_t size, int direction)
-{
- if (direction == PCI_DMA_NONE)
- out_of_line_bug();
- flush_write_buffers();
-}
-
-/* Make physical memory consistent for a set of streaming
- * mode DMA translations after a transfer.
- *
- * The same as pci_dma_sync_single but for a scatter-gather list,
- * same rules and usage.
- */
-static inline void pci_dma_sync_sg(struct pci_dev *hwdev,
- struct scatterlist *sg,
- int nelems, int direction)
-{
- if (direction == PCI_DMA_NONE)
- out_of_line_bug();
- flush_write_buffers();
-}
-
-/* Return whether the given PCI device DMA address mask can
- * be supported properly. For example, if your device can
- * only drive the low 24-bits during PCI bus mastering, then
- * you would pass 0x00ffffff as the mask to this function.
- */
-static inline int pci_dma_supported(struct pci_dev *hwdev, u64 mask)
-{
- /*
- * we fall back to GFP_DMA when the mask isn't all 1s,
- * so we can't guarantee allocations that must be
- * within a tighter range than GFP_DMA..
- */
- if(mask < 0x00ffffff)
- return 0;
-
- return 1;
-}
-
-/* This is always fine. */
-#define pci_dac_dma_supported(pci_dev, mask) (1)
-
-static __inline__ dma64_addr_t
-pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page, unsigned long
offset, int direction)
-{
- return ((dma64_addr_t) page_to_bus(page) +
- (dma64_addr_t) offset);
-}
-
-static __inline__ struct page *
-pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr)
-{
- return bus_to_page(dma_addr);
-}
-
-static __inline__ unsigned long
-pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr)
-{
- return (dma_addr & ~PAGE_MASK);
-}
-
-static __inline__ void
-pci_dac_dma_sync_single(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t
len, int direction)
-{
- flush_write_buffers();
-}
-
-/* These macros should be used after a pci_map_sg call has been done
- * to get bus addresses of each of the SG entries and their lengths.
- * You should only work with the number of sg entries pci_map_sg
- * returns.
- */
-#define sg_dma_address(sg) ((sg)->dma_address)
-#define sg_dma_len(sg) ((sg)->length)
-
-/* Return the index of the PCI controller for device. */
-static inline int pci_controller_num(struct pci_dev *dev)
-{
- return 0;
-}
-
-#define HAVE_PCI_MMAP
-extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
- enum pci_mmap_state mmap_state, int
write_combine);
-
-#endif /* __KERNEL__ */
-
-#endif /* __i386_PCI_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/asm-xen/pgalloc.h
--- a/linux-2.4.30-xen-sparse/include/asm-xen/pgalloc.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,280 +0,0 @@
-#ifndef _I386_PGALLOC_H
-#define _I386_PGALLOC_H
-
-#include <linux/config.h>
-#include <asm/processor.h>
-#include <asm/fixmap.h>
-#include <asm/hypervisor.h>
-#include <linux/threads.h>
-
-/*
- * Quick lists are aligned so that least significant bits of array pointer
- * are all zero when list is empty, and all one when list is full.
- */
-#define QUICKLIST_ENTRIES 256
-#define QUICKLIST_EMPTY(_l) !((unsigned long)(_l) & ((QUICKLIST_ENTRIES*4)-1))
-#define QUICKLIST_FULL(_l) QUICKLIST_EMPTY((_l)+1)
-#define pgd_quicklist (current_cpu_data.pgd_quick)
-#define pmd_quicklist (current_cpu_data.pmd_quick)
-#define pte_quicklist (current_cpu_data.pte_quick)
-#define pgtable_cache_size (current_cpu_data.pgtable_cache_sz)
-
-#define pmd_populate(mm, pmd, pte) \
- do { \
- set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte))); \
- } while ( 0 )
-
-/*
- * Allocate and free page tables.
- */
-
-#if defined (CONFIG_X86_PAE)
-
-#error "no PAE support as yet"
-
-/*
- * We can't include <linux/slab.h> here, thus these uglinesses.
- */
-struct kmem_cache_s;
-
-extern struct kmem_cache_s *pae_pgd_cachep;
-extern void *kmem_cache_alloc(struct kmem_cache_s *, int);
-extern void kmem_cache_free(struct kmem_cache_s *, void *);
-
-
-static inline pgd_t *get_pgd_slow(void)
-{
- int i;
- pgd_t *pgd = kmem_cache_alloc(pae_pgd_cachep, GFP_KERNEL);
-
- if (pgd) {
- for (i = 0; i < USER_PTRS_PER_PGD; i++) {
- unsigned long pmd = __get_free_page(GFP_KERNEL);
- if (!pmd)
- goto out_oom;
- clear_page(pmd);
- set_pgd(pgd + i, __pgd(1 + __pa(pmd)));
- }
- memcpy(pgd + USER_PTRS_PER_PGD,
- init_mm.pgd + USER_PTRS_PER_PGD,
- (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
- }
- return pgd;
-out_oom:
- for (i--; i >= 0; i--)
- free_page((unsigned long)__va(pgd_val(pgd[i])-1));
- kmem_cache_free(pae_pgd_cachep, pgd);
- return NULL;
-}
-
-#else
-
-static inline pgd_t *get_pgd_slow(void)
-{
- pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL);
-
- if (pgd) {
- memset(pgd, 0, USER_PTRS_PER_PGD * sizeof(pgd_t));
- memcpy(pgd + USER_PTRS_PER_PGD,
- init_mm.pgd + USER_PTRS_PER_PGD,
- (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
- __make_page_readonly(pgd);
- xen_pgd_pin(__pa(pgd));
- }
- return pgd;
-}
-
-#endif /* CONFIG_X86_PAE */
-
-static inline pgd_t *get_pgd_fast(void)
-{
- unsigned long ret;
-
- if ( !QUICKLIST_EMPTY(pgd_quicklist) ) {
- ret = *(--pgd_quicklist);
- pgtable_cache_size--;
-
- } else
- ret = (unsigned long)get_pgd_slow();
- return (pgd_t *)ret;
-}
-
-static inline void free_pgd_slow(pgd_t *pgd)
-{
-#if defined(CONFIG_X86_PAE)
-#error
- int i;
-
- for (i = 0; i < USER_PTRS_PER_PGD; i++)
- free_page((unsigned long)__va(pgd_val(pgd[i])-1));
- kmem_cache_free(pae_pgd_cachep, pgd);
-#else
- xen_pgd_unpin(__pa(pgd));
- __make_page_writable(pgd);
- free_page((unsigned long)pgd);
-#endif
-}
-
-static inline void free_pgd_fast(pgd_t *pgd)
-{
- if ( !QUICKLIST_FULL(pgd_quicklist) ) {
- *(pgd_quicklist++) = (unsigned long)pgd;
- pgtable_cache_size++;
- } else
- free_pgd_slow(pgd);
-}
-
-static inline pte_t *pte_alloc_one(struct mm_struct *mm, unsigned long address)
-{
- pte_t *pte;
-
- pte = (pte_t *) __get_free_page(GFP_KERNEL);
- if (pte)
- {
- clear_page(pte);
- __make_page_readonly(pte);
- xen_pte_pin(__pa(pte));
- }
- return pte;
-
-}
-
-static inline pte_t *pte_alloc_one_fast(struct mm_struct *mm,
- unsigned long address)
-{
- unsigned long ret = 0;
- if ( !QUICKLIST_EMPTY(pte_quicklist) ) {
- ret = *(--pte_quicklist);
- pgtable_cache_size--;
- }
- return (pte_t *)ret;
-}
-
-static __inline__ void pte_free_slow(pte_t *pte)
-{
- xen_pte_unpin(__pa(pte));
- __make_page_writable(pte);
- free_page((unsigned long)pte);
-}
-
-static inline void pte_free_fast(pte_t *pte)
-{
- if ( !QUICKLIST_FULL(pte_quicklist) ) {
- *(pte_quicklist++) = (unsigned long)pte;
- pgtable_cache_size++;
- } else
- pte_free_slow(pte);
-}
-
-#define pte_free(pte) pte_free_fast(pte)
-#define pgd_free(pgd) free_pgd_fast(pgd)
-#define pgd_alloc(mm) get_pgd_fast()
-
-/*
- * allocating and freeing a pmd is trivial: the 1-entry pmd is
- * inside the pgd, so has no extra memory associated with it.
- * (In the PAE case we free the pmds as part of the pgd.)
- */
-
-#define pmd_alloc_one_fast(mm, addr) ({ BUG(); ((pmd_t *)1); })
-#define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); })
-#define pmd_free_slow(x) do { } while (0)
-#define pmd_free_fast(x) do { } while (0)
-#define pmd_free(x) do { } while (0)
-#define pgd_populate(mm, pmd, pte) BUG()
-
-extern int do_check_pgt_cache(int, int);
-
-/*
- * TLB flushing:
- *
- * - flush_tlb() flushes the current mm struct TLBs
- * - flush_tlb_all() flushes all processes TLBs
- * - flush_tlb_mm(mm) flushes the specified mm context TLB's
- * - flush_tlb_page(vma, vmaddr) flushes one page
- * - flush_tlb_range(mm, start, end) flushes a range of pages
- * - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
- *
- * ..but the i386 has somewhat limited tlb flushing capabilities,
- * and page-granular flushes are available only on i486 and up.
- */
-
-#ifndef CONFIG_SMP
-
-#define flush_tlb() __flush_tlb()
-#define flush_tlb_all() __flush_tlb_all()
-#define local_flush_tlb() __flush_tlb()
-
-static inline void flush_tlb_mm(struct mm_struct *mm)
-{
- if (mm == current->active_mm) xen_tlb_flush();
-}
-
-static inline void flush_tlb_page(struct vm_area_struct *vma,
- unsigned long addr)
-{
- if (vma->vm_mm == current->active_mm) xen_invlpg(addr);
-}
-
-static inline void flush_tlb_range(struct mm_struct *mm,
- unsigned long start, unsigned long end)
-{
- if (mm == current->active_mm) xen_tlb_flush();
-}
-
-#else
-#error no kernel SMP support yet...
-#include <asm/smp.h>
-
-#define local_flush_tlb() \
- __flush_tlb()
-
-extern void flush_tlb_all(void);
-extern void flush_tlb_current_task(void);
-extern void flush_tlb_mm(struct mm_struct *);
-extern void flush_tlb_page(struct vm_area_struct *, unsigned long);
-
-#define flush_tlb() flush_tlb_current_task()
-
-static inline void flush_tlb_range(struct mm_struct * mm, unsigned long start,
unsigned long end)
-{
- flush_tlb_mm(mm);
-}
-
-#define TLBSTATE_OK 1
-#define TLBSTATE_LAZY 2
-
-struct tlb_state
-{
- struct mm_struct *active_mm;
- int state;
-} ____cacheline_aligned;
-extern struct tlb_state cpu_tlbstate[NR_CPUS];
-
-#endif /* CONFIG_SMP */
-
-static inline void flush_tlb_pgtables(struct mm_struct *mm,
- unsigned long start, unsigned long end)
-{
- /* i386 does not keep any page table caches in TLB */
-}
-
-/*
- * NB. The 'domid' field should be zero if mapping I/O space (non RAM).
- * Otherwise it identifies the owner of the memory that is being mapped.
- */
-extern int direct_remap_area_pages(struct mm_struct *mm,
- unsigned long address,
- unsigned long machine_addr,
- unsigned long size,
- pgprot_t prot,
- domid_t domid);
-
-extern int __direct_remap_area_pages(struct mm_struct *mm,
- unsigned long address,
- unsigned long size,
- mmu_update_t *v);
-
-
-
-#endif /* _I386_PGALLOC_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/asm-xen/pgtable-2level.h
--- a/linux-2.4.30-xen-sparse/include/asm-xen/pgtable-2level.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,97 +0,0 @@
-#ifndef _I386_PGTABLE_2LEVEL_H
-#define _I386_PGTABLE_2LEVEL_H
-
-/*
- * traditional i386 two-level paging structure:
- */
-
-#define PGDIR_SHIFT 22
-#define PTRS_PER_PGD 1024
-
-/*
- * the i386 is two-level, so we don't really have any
- * PMD directory physically.
- */
-#define PMD_SHIFT 22
-#define PTRS_PER_PMD 1
-
-#define PTRS_PER_PTE 1024
-
-#define pte_ERROR(e) \
- printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, (e).pte_low)
-#define pmd_ERROR(e) \
- printk("%s:%d: bad pmd %08lx.\n", __FILE__, __LINE__, pmd_val(e))
-#define pgd_ERROR(e) \
- printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))
-
-/*
- * The "pgd_xxx()" functions here are trivial for a folded two-level
- * setup: the pgd is never bad, and a pmd always exists (as it's folded
- * into the pgd entry)
- */
-static inline int pgd_none(pgd_t pgd) { return 0; }
-static inline int pgd_bad(pgd_t pgd) { return 0; }
-static inline int pgd_present(pgd_t pgd) { return 1; }
-#define pgd_clear(xp) do { } while (0)
-
-/*
- * Certain architectures need to do special things when PTEs
- * within a page table are directly modified. Thus, the following
- * hook is made available.
- */
-#define set_pte(pteptr, pteval) (*(pteptr) = pteval)
-#define set_pte_atomic(pteptr, pteval) (*(pteptr) = pteval)
-
-/*
- * (pmds are folded into pgds so this doesnt get actually called,
- * but the define is needed for a generic inline function.)
- */
-#define set_pmd(pmdptr, pmdval) xen_l2_entry_update((pmdptr), (pmdval))
-#define set_pgd(pgdptr, pgdval) ((void)0)
-
-#define pgd_page(pgd) \
-((unsigned long) __va(pgd_val(pgd) & PAGE_MASK))
-
-static inline pmd_t * pmd_offset(pgd_t * dir, unsigned long address)
-{
- return (pmd_t *) dir;
-}
-
-#define ptep_get_and_clear(xp) __pte_ma(xchg(&(xp)->pte_low, 0))
-#define pte_same(a, b) ((a).pte_low == (b).pte_low)
-
-/*
- * We detect special mappings in one of two ways:
- * 1. If the MFN is an I/O page then Xen will set the m2p entry
- * to be outside our maximum possible pseudophys range.
- * 2. If the MFN belongs to a different domain then we will certainly
- * not have MFN in our p2m table. Conversely, if the page is ours,
- * then we'll have p2m(m2p(MFN))==MFN.
- * If we detect a special mapping then it doesn't have a 'struct page'.
- * We force !VALID_PAGE() by returning an out-of-range pointer.
- *
- * NB. These checks require that, for any MFN that is not in our reservation,
- * there is no PFN such that p2m(PFN) == MFN. Otherwise we can get confused if
- * we are foreign-mapping the MFN, and the other domain as m2p(MFN) == PFN.
- * Yikes! Various places must poke in INVALID_P2M_ENTRY for safety.
- *
- * NB2. When deliberately mapping foreign pages into the p2m table, you *must*
- * use FOREIGN_FRAME(). This will cause pte_pfn() to choke on it, as we
- * require. In all the cases we care about, the high bit gets shifted out
- * (e.g., phys_to_machine()) so behaviour there is correct.
- */
-#define INVALID_P2M_ENTRY (~0U)
-#define FOREIGN_FRAME(_m) ((_m) | (1UL<<((sizeof(unsigned long)*8)-1)))
-#define pte_page(_pte) \
-({ \
- unsigned long mfn = (_pte).pte_low >> PAGE_SHIFT; \
- unsigned long pfn = mfn_to_pfn(mfn); \
- if ( (pfn >= max_mapnr) || (pfn_to_mfn(pfn) != mfn) ) \
- pfn = max_mapnr; /* specia: force !VALID_PAGE() */ \
- &mem_map[pfn]; \
-})
-
-#define pte_none(x) (!(x).pte_low)
-#define __mk_pte(page_nr,pgprot) __pte(((page_nr) << PAGE_SHIFT) |
pgprot_val(pgprot))
-
-#endif /* _I386_PGTABLE_2LEVEL_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/asm-xen/pgtable.h
--- a/linux-2.4.30-xen-sparse/include/asm-xen/pgtable.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,371 +0,0 @@
-#ifndef _I386_PGTABLE_H
-#define _I386_PGTABLE_H
-
-#include <linux/config.h>
-
-/*
- * The Linux memory management assumes a three-level page table setup. On
- * the i386, we use that, but "fold" the mid level into the top-level page
- * table, so that we physically have the same two-level page table as the
- * i386 mmu expects.
- *
- * This file contains the functions and defines necessary to modify and use
- * the i386 page table tree.
- */
-#ifndef __ASSEMBLY__
-#include <asm/processor.h>
-#include <asm/hypervisor.h>
-#include <linux/threads.h>
-#include <asm/fixmap.h>
-
-#ifndef _I386_BITOPS_H
-#include <asm/bitops.h>
-#endif
-
-#define swapper_pg_dir 0
-extern void paging_init(void);
-
-/* Caches aren't brain-dead on the intel. */
-#define flush_cache_all() do { } while (0)
-#define flush_cache_mm(mm) do { } while (0)
-#define flush_cache_range(mm, start, end) do { } while (0)
-#define flush_cache_page(vma, vmaddr) do { } while (0)
-#define flush_page_to_ram(page) do { } while (0)
-#define flush_dcache_page(page) do { } while (0)
-#define flush_icache_range(start, end) do { } while (0)
-#define flush_icache_page(vma,pg) do { } while (0)
-#define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
-
-extern unsigned long pgkern_mask;
-
-#define __flush_tlb() xen_tlb_flush()
-#define __flush_tlb_global() __flush_tlb()
-#define __flush_tlb_all() __flush_tlb_global()
-#define __flush_tlb_one(addr) xen_invlpg(addr)
-#define __flush_tlb_single(addr) xen_invlpg(addr)
-
-/*
- * ZERO_PAGE is a global shared page that is always zero: used
- * for zero-mapped memory areas etc..
- */
-extern unsigned long empty_zero_page[1024];
-#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
-
-#endif /* !__ASSEMBLY__ */
-
-/*
- * The Linux x86 paging architecture is 'compile-time dual-mode', it
- * implements both the traditional 2-level x86 page tables and the
- * newer 3-level PAE-mode page tables.
- */
-#ifndef __ASSEMBLY__
-#if CONFIG_X86_PAE
-# include <asm/pgtable-3level.h>
-
-/*
- * Need to initialise the X86 PAE caches
- */
-extern void pgtable_cache_init(void);
-
-#else
-# include <asm/pgtable-2level.h>
-
-/*
- * No page table caches to initialise
- */
-#define pgtable_cache_init() do { } while (0)
-
-#endif
-#endif
-
-#define PMD_SIZE (1UL << PMD_SHIFT)
-#define PMD_MASK (~(PMD_SIZE-1))
-#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
-#define PGDIR_MASK (~(PGDIR_SIZE-1))
-
-#define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE)
-#define FIRST_USER_PGD_NR 0
-
-#define USER_PGD_PTRS (PAGE_OFFSET >> PGDIR_SHIFT)
-#define KERNEL_PGD_PTRS (PTRS_PER_PGD-USER_PGD_PTRS)
-
-#define TWOLEVEL_PGDIR_SHIFT 22
-#define BOOT_USER_PGD_PTRS (__PAGE_OFFSET >> TWOLEVEL_PGDIR_SHIFT)
-#define BOOT_KERNEL_PGD_PTRS (1024-BOOT_USER_PGD_PTRS)
-
-
-#ifndef __ASSEMBLY__
-/* 4MB is just a nice "safety zone". Also, we align to a fresh pde. */
-#define VMALLOC_OFFSET (4*1024*1024)
-extern void * high_memory;
-#define VMALLOC_START (((unsigned long) high_memory + 2*VMALLOC_OFFSET-1) & \
- ~(VMALLOC_OFFSET-1))
-#define VMALLOC_VMADDR(x) ((unsigned long)(x))
-#if CONFIG_HIGHMEM
-# define VMALLOC_END (PKMAP_BASE-2*PAGE_SIZE)
-#else
-# define VMALLOC_END (FIXADDR_START-2*PAGE_SIZE)
-#endif
-
-#define _PAGE_BIT_PRESENT 0
-#define _PAGE_BIT_RW 1
-#define _PAGE_BIT_USER 2
-#define _PAGE_BIT_PWT 3
-#define _PAGE_BIT_PCD 4
-#define _PAGE_BIT_ACCESSED 5
-#define _PAGE_BIT_DIRTY 6
-#define _PAGE_BIT_PSE 7 /* 4 MB (or 2MB) page, Pentium+, if
present.. */
-#define _PAGE_BIT_GLOBAL 8 /* Global TLB entry PPro+ */
-
-#define _PAGE_PRESENT 0x001
-#define _PAGE_RW 0x002
-#define _PAGE_USER 0x004
-#define _PAGE_PWT 0x008
-#define _PAGE_PCD 0x010
-#define _PAGE_ACCESSED 0x020
-#define _PAGE_DIRTY 0x040
-#define _PAGE_PSE 0x080 /* 4 MB (or 2MB) page, Pentium+, if present.. */
-#define _PAGE_GLOBAL 0x100 /* Global TLB entry PPro+ */
-
-#define _PAGE_PROTNONE 0x080 /* If not present */
-
-#define _PAGE_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED
| _PAGE_DIRTY)
-#define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED |
_PAGE_DIRTY)
-#define _PAGE_CHG_MASK (PTE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
-
-#define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED)
-#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER |
_PAGE_ACCESSED)
-#define PAGE_COPY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
-#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
-
-#define __PAGE_KERNEL \
- (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED)
-#define __PAGE_KERNEL_NOCACHE \
- (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_PCD | _PAGE_ACCESSED)
-#define __PAGE_KERNEL_RO \
- (_PAGE_PRESENT | _PAGE_DIRTY | _PAGE_ACCESSED)
-
-#if 0
-#define MAKE_GLOBAL(x) __pgprot((x) | _PAGE_GLOBAL)
-#else
-#define MAKE_GLOBAL(x) __pgprot(x)
-#endif
-
-#define PAGE_KERNEL MAKE_GLOBAL(__PAGE_KERNEL)
-#define PAGE_KERNEL_RO MAKE_GLOBAL(__PAGE_KERNEL_RO)
-#define PAGE_KERNEL_NOCACHE MAKE_GLOBAL(__PAGE_KERNEL_NOCACHE)
-
-/*
- * The i386 can't do page protection for execute, and considers that
- * the same are read. Also, write permissions imply read permissions.
- * This is the closest we can get..
- */
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_READONLY
-#define __P101 PAGE_READONLY
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY
-#define __S101 PAGE_READONLY
-#define __S110 PAGE_SHARED
-#define __S111 PAGE_SHARED
-
-#define pte_present(x) ((x).pte_low & (_PAGE_PRESENT | _PAGE_PROTNONE))
-#define pte_clear(xp) do { set_pte(xp, __pte(0)); } while (0)
-
-#define pmd_none(x) (!pmd_val(x))
-/* pmd_present doesn't just test the _PAGE_PRESENT bit since wr.p.t.
- can temporarily clear it. */
-#define pmd_present(x) (pmd_val(x))
-#define pmd_clear(xp) do { set_pmd(xp, __pmd(0)); } while (0)
-#define pmd_bad(x) ((pmd_val(x) & (~PAGE_MASK & ~_PAGE_USER &
~_PAGE_PRESENT)) != (_KERNPG_TABLE & ~_PAGE_PRESENT))
-
-
-#define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT))
-
-/*
- * The following only work if pte_present() is true.
- * Undefined behaviour if not..
- */
-static inline int pte_read(pte_t pte) { return (pte).pte_low &
_PAGE_USER; }
-static inline int pte_exec(pte_t pte) { return (pte).pte_low &
_PAGE_USER; }
-static inline int pte_dirty(pte_t pte) { return (pte).pte_low &
_PAGE_DIRTY; }
-static inline int pte_young(pte_t pte) { return (pte).pte_low &
_PAGE_ACCESSED; }
-static inline int pte_write(pte_t pte) { return (pte).pte_low &
_PAGE_RW; }
-
-static inline pte_t pte_rdprotect(pte_t pte) { (pte).pte_low &= ~_PAGE_USER;
return pte; }
-static inline pte_t pte_exprotect(pte_t pte) { (pte).pte_low &= ~_PAGE_USER;
return pte; }
-static inline pte_t pte_mkclean(pte_t pte) { (pte).pte_low &=
~_PAGE_DIRTY; return pte; }
-static inline pte_t pte_mkold(pte_t pte) { (pte).pte_low &=
~_PAGE_ACCESSED; return pte; }
-static inline pte_t pte_wrprotect(pte_t pte) { (pte).pte_low &= ~_PAGE_RW;
return pte; }
-static inline pte_t pte_mkread(pte_t pte) { (pte).pte_low |= _PAGE_USER;
return pte; }
-static inline pte_t pte_mkexec(pte_t pte) { (pte).pte_low |= _PAGE_USER;
return pte; }
-static inline pte_t pte_mkdirty(pte_t pte) { (pte).pte_low |= _PAGE_DIRTY;
return pte; }
-static inline pte_t pte_mkyoung(pte_t pte) { (pte).pte_low |=
_PAGE_ACCESSED; return pte; }
-static inline pte_t pte_mkwrite(pte_t pte) { (pte).pte_low |= _PAGE_RW;
return pte; }
-
-static inline int ptep_test_and_clear_dirty(pte_t *ptep)
-{
- if (!pte_dirty(*ptep))
- return 0;
- return test_and_clear_bit(_PAGE_BIT_DIRTY, &ptep->pte_low);
-}
-
-static inline int ptep_test_and_clear_young(pte_t *ptep)
-{
- if (!pte_young(*ptep))
- return 0;
- return test_and_clear_bit(_PAGE_BIT_ACCESSED, &ptep->pte_low);
-}
-
-static inline void ptep_set_wrprotect(pte_t *ptep)
-{
- if (pte_write(*ptep))
- clear_bit(_PAGE_BIT_RW, &ptep->pte_low);
-}
-
-static inline void ptep_mkdirty(pte_t *ptep)
-{
- if (!pte_dirty(*ptep))
- set_bit(_PAGE_BIT_DIRTY, &ptep->pte_low);
-}
-
-/*
- * Conversion functions: convert a page and protection to a page entry,
- * and a page entry and page directory to the page they refer to.
- */
-
-#define mk_pte(page, pgprot) __mk_pte((page) - mem_map, (pgprot))
-
-/* This takes a physical page address that is used by the remapping functions
*/
-#define mk_pte_phys(physpage, pgprot) __mk_pte((physpage) >> PAGE_SHIFT,
pgprot)
-
-static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
-{
- pte.pte_low &= _PAGE_CHG_MASK;
- pte.pte_low |= pgprot_val(newprot);
- return pte;
-}
-
-#define page_pte(page) page_pte_prot(page, __pgprot(0))
-
-#define pmd_page(pmd) \
-((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
-
-/* to find an entry in a page-table-directory. */
-#define pgd_index(address) ((address >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
-
-#define __pgd_offset(address) pgd_index(address)
-
-#define pgd_offset(mm, address) ((mm)->pgd+pgd_index(address))
-
-/* to find an entry in a kernel page-table-directory */
-#define pgd_offset_k(address) pgd_offset(&init_mm, address)
-
-#define __pmd_offset(address) \
- (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
-
-/* Find an entry in the third-level page table.. */
-#define __pte_offset(address) \
- ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
-#define pte_offset(dir, address) ((pte_t *) pmd_page(*(dir)) + \
- __pte_offset(address))
-
-/*
- * The i386 doesn't have any external MMU info: the kernel page
- * tables contain all the necessary information.
- */
-#define update_mmu_cache(vma,address,pte) do { } while (0)
-
-/* Encode and de-code a swap entry */
-#define SWP_TYPE(x) (((x).val >> 1) & 0x3f)
-#define SWP_OFFSET(x) ((x).val >> 8)
-#define SWP_ENTRY(type, offset) ((swp_entry_t) { ((type) << 1)
| ((offset) << 8) })
-#define pte_to_swp_entry(pte) ((swp_entry_t) { (pte).pte_low })
-#define swp_entry_to_pte(x) ((pte_t) { (x).val })
-
-struct page;
-int change_page_attr(struct page *, int, pgprot_t prot);
-
-static inline void __make_page_readonly(void *va)
-{
- pgd_t *pgd = pgd_offset_k((unsigned long)va);
- pmd_t *pmd = pmd_offset(pgd, (unsigned long)va);
- pte_t *pte = pte_offset(pmd, (unsigned long)va);
- set_pte(pte, pte_wrprotect(*pte));
-}
-
-static inline void __make_page_writable(void *va)
-{
- pgd_t *pgd = pgd_offset_k((unsigned long)va);
- pmd_t *pmd = pmd_offset(pgd, (unsigned long)va);
- pte_t *pte = pte_offset(pmd, (unsigned long)va);
- set_pte(pte, pte_mkwrite(*pte));
-}
-
-static inline void make_page_readonly(void *va)
-{
- pgd_t *pgd = pgd_offset_k((unsigned long)va);
- pmd_t *pmd = pmd_offset(pgd, (unsigned long)va);
- pte_t *pte = pte_offset(pmd, (unsigned long)va);
- set_pte(pte, pte_wrprotect(*pte));
- if ( (unsigned long)va >= VMALLOC_START )
- __make_page_readonly(machine_to_virt(
- *(unsigned long *)pte&PAGE_MASK));
-}
-
-static inline void make_page_writable(void *va)
-{
- pgd_t *pgd = pgd_offset_k((unsigned long)va);
- pmd_t *pmd = pmd_offset(pgd, (unsigned long)va);
- pte_t *pte = pte_offset(pmd, (unsigned long)va);
- set_pte(pte, pte_mkwrite(*pte));
- if ( (unsigned long)va >= VMALLOC_START )
- __make_page_writable(machine_to_virt(
- *(unsigned long *)pte&PAGE_MASK));
-}
-
-static inline void make_pages_readonly(void *va, unsigned int nr)
-{
- while ( nr-- != 0 )
- {
- make_page_readonly(va);
- va = (void *)((unsigned long)va + PAGE_SIZE);
- }
-}
-
-static inline void make_pages_writable(void *va, unsigned int nr)
-{
- while ( nr-- != 0 )
- {
- make_page_writable(va);
- va = (void *)((unsigned long)va + PAGE_SIZE);
- }
-}
-
-static inline unsigned long arbitrary_virt_to_machine(void *va)
-{
- pgd_t *pgd = pgd_offset_k((unsigned long)va);
- pmd_t *pmd = pmd_offset(pgd, (unsigned long)va);
- pte_t *pte = pte_offset(pmd, (unsigned long)va);
- unsigned long pa = (*(unsigned long *)pte) & PAGE_MASK;
- return pa | ((unsigned long)va & (PAGE_SIZE-1));
-}
-
-#endif /* !__ASSEMBLY__ */
-
-/* Needs to be defined here and not in linux/mm.h, as it is arch dependent */
-#define PageSkip(page) (0)
-#define kern_addr_valid(addr) (1)
-
-#define io_remap_page_range remap_page_range
-
-#endif /* _I386_PGTABLE_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/asm-xen/processor.h
--- a/linux-2.4.30-xen-sparse/include/asm-xen/processor.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,483 +0,0 @@
-/*
- * include/asm-i386/processor.h
- *
- * Copyright (C) 1994 Linus Torvalds
- */
-
-#ifndef __ASM_I386_PROCESSOR_H
-#define __ASM_I386_PROCESSOR_H
-
-#include <asm/vm86.h>
-#include <asm/math_emu.h>
-#include <asm/segment.h>
-#include <asm/page.h>
-#include <asm/types.h>
-#include <asm/sigcontext.h>
-#include <asm/cpufeature.h>
-#include <linux/cache.h>
-#include <linux/config.h>
-#include <linux/threads.h>
-
-/*
- * Default implementation of macro that returns current
- * instruction pointer ("program counter").
- */
-#define current_text_addr() ({ void *pc; __asm__("movl $1f,%0\n1:":"=g" (pc));
pc; })
-
-/*
- * CPU type and hardware bug flags. Kept separately for each CPU.
- * Members of this structure are referenced in head.S, so think twice
- * before touching them. [mj]
- */
-
-struct cpuinfo_x86 {
- __u8 x86; /* CPU family */
- __u8 x86_vendor; /* CPU vendor */
- __u8 x86_model;
- __u8 x86_mask;
- char wp_works_ok; /* It doesn't on 386's */
- char hlt_works_ok; /* Problems on some 486Dx4's and old 386's */
- char hard_math;
- char rfu;
- int cpuid_level; /* Maximum supported CPUID level, -1=no
CPUID */
- __u32 x86_capability[NCAPINTS];
- char x86_vendor_id[16];
- char x86_model_id[64];
- int x86_cache_size; /* in KB - valid for CPUS which support this
- call */
- int fdiv_bug;
- int f00f_bug;
- int coma_bug;
- unsigned long loops_per_jiffy;
- unsigned long *pgd_quick;
- unsigned long *pmd_quick;
- unsigned long *pte_quick;
- unsigned long pgtable_cache_sz;
-} __attribute__((__aligned__(SMP_CACHE_BYTES)));
-
-#define X86_VENDOR_INTEL 0
-#define X86_VENDOR_CYRIX 1
-#define X86_VENDOR_AMD 2
-#define X86_VENDOR_UMC 3
-#define X86_VENDOR_NEXGEN 4
-#define X86_VENDOR_CENTAUR 5
-#define X86_VENDOR_RISE 6
-#define X86_VENDOR_TRANSMETA 7
-#define X86_VENDOR_NSC 8
-#define X86_VENDOR_SIS 9
-#define X86_VENDOR_UNKNOWN 0xff
-
-/*
- * capabilities of CPUs
- */
-
-extern struct cpuinfo_x86 boot_cpu_data;
-extern struct tss_struct init_tss[NR_CPUS];
-
-#ifdef CONFIG_SMP
-extern struct cpuinfo_x86 cpu_data[];
-#define current_cpu_data cpu_data[smp_processor_id()]
-#else
-#define cpu_data (&boot_cpu_data)
-#define current_cpu_data boot_cpu_data
-#endif
-
-extern char ignore_irq13;
-
-extern void identify_cpu(struct cpuinfo_x86 *);
-extern void print_cpu_info(struct cpuinfo_x86 *);
-
-/*
- * EFLAGS bits
- */
-#define X86_EFLAGS_CF 0x00000001 /* Carry Flag */
-#define X86_EFLAGS_PF 0x00000004 /* Parity Flag */
-#define X86_EFLAGS_AF 0x00000010 /* Auxillary carry Flag */
-#define X86_EFLAGS_ZF 0x00000040 /* Zero Flag */
-#define X86_EFLAGS_SF 0x00000080 /* Sign Flag */
-#define X86_EFLAGS_TF 0x00000100 /* Trap Flag */
-#define X86_EFLAGS_IF 0x00000200 /* Interrupt Flag */
-#define X86_EFLAGS_DF 0x00000400 /* Direction Flag */
-#define X86_EFLAGS_OF 0x00000800 /* Overflow Flag */
-#define X86_EFLAGS_IOPL 0x00003000 /* IOPL mask */
-#define X86_EFLAGS_NT 0x00004000 /* Nested Task */
-#define X86_EFLAGS_RF 0x00010000 /* Resume Flag */
-#define X86_EFLAGS_VM 0x00020000 /* Virtual Mode */
-#define X86_EFLAGS_AC 0x00040000 /* Alignment Check */
-#define X86_EFLAGS_VIF 0x00080000 /* Virtual Interrupt Flag */
-#define X86_EFLAGS_VIP 0x00100000 /* Virtual Interrupt Pending */
-#define X86_EFLAGS_ID 0x00200000 /* CPUID detection flag */
-
-/*
- * Generic CPUID function
- */
-static inline void cpuid(int op, int *eax, int *ebx, int *ecx, int *edx)
-{
- __asm__("cpuid"
- : "=a" (*eax),
- "=b" (*ebx),
- "=c" (*ecx),
- "=d" (*edx)
- : "0" (op));
-}
-
-/*
- * CPUID functions returning a single datum
- */
-static inline unsigned int cpuid_eax(unsigned int op)
-{
- unsigned int eax;
-
- __asm__("cpuid"
- : "=a" (eax)
- : "0" (op)
- : "bx", "cx", "dx");
- return eax;
-}
-static inline unsigned int cpuid_ebx(unsigned int op)
-{
- unsigned int eax, ebx;
-
- __asm__("cpuid"
- : "=a" (eax), "=b" (ebx)
- : "0" (op)
- : "cx", "dx" );
- return ebx;
-}
-static inline unsigned int cpuid_ecx(unsigned int op)
-{
- unsigned int eax, ecx;
-
- __asm__("cpuid"
- : "=a" (eax), "=c" (ecx)
- : "0" (op)
- : "bx", "dx" );
- return ecx;
-}
-static inline unsigned int cpuid_edx(unsigned int op)
-{
- unsigned int eax, edx;
-
- __asm__("cpuid"
- : "=a" (eax), "=d" (edx)
- : "0" (op)
- : "bx", "cx");
- return edx;
-}
-
-/*
- * Intel CPU features in CR4
- */
-#define X86_CR4_VME 0x0001 /* enable vm86 extensions */
-#define X86_CR4_PVI 0x0002 /* virtual interrupts flag enable */
-#define X86_CR4_TSD 0x0004 /* disable time stamp at ipl 3 */
-#define X86_CR4_DE 0x0008 /* enable debugging extensions */
-#define X86_CR4_PSE 0x0010 /* enable page size extensions */
-#define X86_CR4_PAE 0x0020 /* enable physical address extensions */
-#define X86_CR4_MCE 0x0040 /* Machine check enable */
-#define X86_CR4_PGE 0x0080 /* enable global pages */
-#define X86_CR4_PCE 0x0100 /* enable performance counters at ipl 3
*/
-#define X86_CR4_OSFXSR 0x0200 /* enable fast FPU save and restore */
-#define X86_CR4_OSXMMEXCPT 0x0400 /* enable unmasked SSE exceptions */
-
-#define load_cr3(pgdir) \
- asm volatile("movl %0,%%cr3": :"r" (__pa(pgdir)));
-
-extern unsigned long mmu_cr4_features;
-
-#include <asm/hypervisor.h>
-
-static inline void set_in_cr4 (unsigned long mask)
-{
- BUG();
-}
-
-static inline void clear_in_cr4 (unsigned long mask)
-{
- BUG();
-}
-
-/*
- * Cyrix CPU configuration register indexes
- */
-#define CX86_CCR0 0xc0
-#define CX86_CCR1 0xc1
-#define CX86_CCR2 0xc2
-#define CX86_CCR3 0xc3
-#define CX86_CCR4 0xe8
-#define CX86_CCR5 0xe9
-#define CX86_CCR6 0xea
-#define CX86_CCR7 0xeb
-#define CX86_DIR0 0xfe
-#define CX86_DIR1 0xff
-#define CX86_ARR_BASE 0xc4
-#define CX86_RCR_BASE 0xdc
-
-/*
- * Cyrix CPU indexed register access macros
- */
-
-#define getCx86(reg) ({ outb((reg), 0x22); inb(0x23); })
-
-#define setCx86(reg, data) do { \
- outb((reg), 0x22); \
- outb((data), 0x23); \
-} while (0)
-
-/*
- * Bus types (default is ISA, but people can check others with these..)
- */
-#ifdef CONFIG_EISA
-extern int EISA_bus;
-#else
-#define EISA_bus (0)
-#endif
-extern int MCA_bus;
-
-/* from system description table in BIOS. Mostly for MCA use, but
-others may find it useful. */
-extern unsigned int machine_id;
-extern unsigned int machine_submodel_id;
-extern unsigned int BIOS_revision;
-extern unsigned int mca_pentium_flag;
-
-/*
- * User space process size: 3GB (default).
- */
-#define TASK_SIZE (PAGE_OFFSET)
-
-/* This decides where the kernel will search for a free chunk of vm
- * space during mmap's.
- */
-#define TASK_UNMAPPED_BASE (TASK_SIZE / 3)
-
-/*
- * Size of io_bitmap in longwords: 32 is ports 0-0x3ff.
- */
-#define IO_BITMAP_SIZE 32
-#define IO_BITMAP_BYTES (IO_BITMAP_SIZE * 4)
-#define IO_BITMAP_OFFSET offsetof(struct tss_struct,io_bitmap)
-#define INVALID_IO_BITMAP_OFFSET 0x8000
-
-struct i387_fsave_struct {
- long cwd;
- long swd;
- long twd;
- long fip;
- long fcs;
- long foo;
- long fos;
- long st_space[20]; /* 8*10 bytes for each FP-reg = 80 bytes */
- long status; /* software status information */
-};
-
-struct i387_fxsave_struct {
- unsigned short cwd;
- unsigned short swd;
- unsigned short twd;
- unsigned short fop;
- long fip;
- long fcs;
- long foo;
- long fos;
- long mxcsr;
- long reserved;
- long st_space[32]; /* 8*16 bytes for each FP-reg = 128 bytes */
- long xmm_space[32]; /* 8*16 bytes for each XMM-reg = 128 bytes */
- long padding[56];
-} __attribute__ ((aligned (16)));
-
-struct i387_soft_struct {
- long cwd;
- long swd;
- long twd;
- long fip;
- long fcs;
- long foo;
- long fos;
- long st_space[20]; /* 8*10 bytes for each FP-reg = 80 bytes */
- unsigned char ftop, changed, lookahead, no_update, rm, alimit;
- struct info *info;
- unsigned long entry_eip;
-};
-
-union i387_union {
- struct i387_fsave_struct fsave;
- struct i387_fxsave_struct fxsave;
- struct i387_soft_struct soft;
-};
-
-typedef struct {
- unsigned long seg;
-} mm_segment_t;
-
-struct tss_struct {
- unsigned short back_link,__blh;
- unsigned long esp0;
- unsigned short ss0,__ss0h;
- unsigned long esp1;
- unsigned short ss1,__ss1h;
- unsigned long esp2;
- unsigned short ss2,__ss2h;
- unsigned long __cr3;
- unsigned long eip;
- unsigned long eflags;
- unsigned long eax,ecx,edx,ebx;
- unsigned long esp;
- unsigned long ebp;
- unsigned long esi;
- unsigned long edi;
- unsigned short es, __esh;
- unsigned short cs, __csh;
- unsigned short ss, __ssh;
- unsigned short ds, __dsh;
- unsigned short fs, __fsh;
- unsigned short gs, __gsh;
- unsigned short ldt, __ldth;
- unsigned short trace, bitmap;
- unsigned long io_bitmap[IO_BITMAP_SIZE+1];
- /*
- * pads the TSS to be cacheline-aligned (size is 0x100)
- */
- unsigned long __cacheline_filler[5];
-};
-
-struct thread_struct {
- unsigned long esp0;
- unsigned long eip;
- unsigned long esp;
- unsigned long fs;
- unsigned long gs;
- unsigned int io_pl;
-/* Hardware debugging registers */
- unsigned long debugreg[8]; /* %%db0-7 debug registers */
-/* fault info */
- unsigned long cr2, trap_no, error_code;
-/* floating point info */
- union i387_union i387;
-/* virtual 86 mode info */
- struct vm86_struct * vm86_info;
- unsigned long screen_bitmap;
- unsigned long v86flags, v86mask, saved_esp0;
-};
-
-#define INIT_THREAD { sizeof(init_stack) + (long) &init_stack, \
- 0, 0, 0, 0, 0, 0, {0}, 0, 0, 0, {{0}}, 0, 0, 0, 0, 0 }
-
-#define INIT_TSS { \
- 0,0, /* back_link, __blh */ \
- sizeof(init_stack) + (long) &init_stack, /* esp0 */ \
- __KERNEL_DS, 0, /* ss0 */ \
- 0,0,0,0,0,0, /* stack1, stack2 */ \
- 0, /* cr3 */ \
- 0,0, /* eip,eflags */ \
- 0,0,0,0, /* eax,ecx,edx,ebx */ \
- 0,0,0,0, /* esp,ebp,esi,edi */ \
- 0,0,0,0,0,0, /* es,cs,ss */ \
- 0,0,0,0,0,0, /* ds,fs,gs */ \
- 0,0, /* ldt */ \
- 0, INVALID_IO_BITMAP_OFFSET, /* tace, bitmap */ \
- {~0, } /* ioperm */ \
-}
-
-#define start_thread(regs, new_eip, new_esp) do { \
- __asm__("movl %0,%%fs ; movl %0,%%gs": :"r" (0)); \
- set_fs(USER_DS); \
- regs->xds = __USER_DS; \
- regs->xes = __USER_DS; \
- regs->xss = __USER_DS; \
- regs->xcs = __USER_CS; \
- regs->eip = new_eip; \
- regs->esp = new_esp; \
-} while (0)
-
-/* Forward declaration, a strange C thing */
-struct task_struct;
-struct mm_struct;
-
-/* Free all resources held by a thread. */
-extern void release_thread(struct task_struct *);
-/*
- * create a kernel thread without removing it from tasklists
- */
-extern int arch_kernel_thread(int (*fn)(void *), void * arg, unsigned long
flags);
-
-/* Copy and release all segment info associated with a VM
- * Unusable due to lack of error handling, use {init_new,destroy}_context
- * instead.
- */
-static inline void copy_segments(struct task_struct *p, struct mm_struct * mm)
{ }
-static inline void release_segments(struct mm_struct * mm) { }
-
-/*
- * Return saved PC of a blocked thread.
- */
-static inline unsigned long thread_saved_pc(struct thread_struct *t)
-{
- return ((unsigned long *)t->esp)[3];
-}
-
-unsigned long get_wchan(struct task_struct *p);
-#define KSTK_EIP(tsk) (((unsigned long *)(4096+(unsigned long)(tsk)))[1019])
-#define KSTK_ESP(tsk) (((unsigned long *)(4096+(unsigned long)(tsk)))[1022])
-
-#define THREAD_SIZE (2*PAGE_SIZE)
-#define alloc_task_struct() ((struct task_struct *)
__get_free_pages(GFP_KERNEL,1))
-#define free_task_struct(p) free_pages((unsigned long) (p), 1)
-#define get_task_struct(tsk) atomic_inc(&virt_to_page(tsk)->count)
-
-#define init_task (init_task_union.task)
-#define init_stack (init_task_union.stack)
-
-struct microcode {
- unsigned int hdrver;
- unsigned int rev;
- unsigned int date;
- unsigned int sig;
- unsigned int cksum;
- unsigned int ldrver;
- unsigned int pf;
- unsigned int reserved[5];
- unsigned int bits[500];
-};
-
-/* '6' because it used to be for P6 only (but now covers Pentium 4 as well) */
-#define MICROCODE_IOCFREE _IO('6',0)
-
-/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
-static inline void rep_nop(void)
-{
- __asm__ __volatile__("rep;nop" ::: "memory");
-}
-
-#define cpu_relax() rep_nop()
-
-/* Prefetch instructions for Pentium III and AMD Athlon */
-#if defined(CONFIG_MPENTIUMIII) || defined (CONFIG_MPENTIUM4)
-
-#define ARCH_HAS_PREFETCH
-extern inline void prefetch(const void *x)
-{
- __asm__ __volatile__ ("prefetchnta (%0)" : : "r"(x));
-}
-
-#elif CONFIG_X86_USE_3DNOW
-
-#define ARCH_HAS_PREFETCH
-#define ARCH_HAS_PREFETCHW
-#define ARCH_HAS_SPINLOCK_PREFETCH
-
-extern inline void prefetch(const void *x)
-{
- __asm__ __volatile__ ("prefetch (%0)" : : "r"(x));
-}
-
-extern inline void prefetchw(const void *x)
-{
- __asm__ __volatile__ ("prefetchw (%0)" : : "r"(x));
-}
-#define spin_lock_prefetch(x) prefetchw(x)
-
-#endif
-
-#endif /* __ASM_I386_PROCESSOR_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/asm-xen/queues.h
--- a/linux-2.4.30-xen-sparse/include/asm-xen/queues.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,20 +0,0 @@
-
-/* Work-queue emulation over task queues. Pretty simple. */
-
-#ifndef __QUEUES_H__
-#define __QUEUES_H__
-
-#include <linux/version.h>
-#include <linux/list.h>
-#include <linux/tqueue.h>
-
-#define DECLARE_TQUEUE(_name, _fn, _arg) \
- struct tq_struct _name = { LIST_HEAD_INIT((_name).list), 0, _fn, _arg }
-#define DECLARE_WORK(_name, _fn, _arg) DECLARE_TQUEUE(_name, _fn, _arg)
-
-#define work_struct tq_struct
-#define INIT_WORK(_work, _fn, _arg) INIT_TQUEUE(_work, _fn, _arg)
-
-#define schedule_work(_w) schedule_task(_w)
-
-#endif /* __QUEUES_H__ */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/asm-xen/segment.h
--- a/linux-2.4.30-xen-sparse/include/asm-xen/segment.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,15 +0,0 @@
-#ifndef _ASM_SEGMENT_H
-#define _ASM_SEGMENT_H
-
-#ifndef __ASSEMBLY__
-#include <linux/types.h>
-#endif
-#include <asm-xen/xen-public/xen.h>
-
-#define __KERNEL_CS FLAT_RING1_CS
-#define __KERNEL_DS FLAT_RING1_DS
-
-#define __USER_CS FLAT_RING3_CS
-#define __USER_DS FLAT_RING3_DS
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/asm-xen/smp.h
--- a/linux-2.4.30-xen-sparse/include/asm-xen/smp.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,102 +0,0 @@
-#ifndef __ASM_SMP_H
-#define __ASM_SMP_H
-
-/*
- * We need the APIC definitions automatically as part of 'smp.h'
- */
-#ifndef __ASSEMBLY__
-#include <linux/config.h>
-#include <linux/threads.h>
-#include <linux/ptrace.h>
-#endif
-
-#ifdef CONFIG_X86_LOCAL_APIC
-#ifndef __ASSEMBLY__
-#include <asm/bitops.h>
-#include <asm/mpspec.h>
-#ifdef CONFIG_X86_IO_APIC
-#include <asm/io_apic.h>
-#endif
-#include <asm/apic.h>
-#endif
-#endif
-
-#ifdef CONFIG_SMP
-#ifndef __ASSEMBLY__
-
-/*
- * Private routines/data
- */
-
-extern void smp_alloc_memory(void);
-extern unsigned long phys_cpu_present_map;
-extern unsigned long cpu_online_map;
-extern volatile unsigned long smp_invalidate_needed;
-extern int pic_mode;
-extern int smp_num_siblings;
-extern int cpu_sibling_map[];
-
-extern void smp_flush_tlb(void);
-extern void smp_message_irq(int cpl, void *dev_id, struct pt_regs *regs);
-extern void fastcall smp_send_reschedule(int cpu);
-extern void smp_invalidate_rcv(void); /* Process an NMI */
-extern void (*mtrr_hook) (void);
-extern void zap_low_mappings (void);
-
-/*
- * On x86 all CPUs are mapped 1:1 to the APIC space.
- * This simplifies scheduling and IPI sending and
- * compresses data structures.
- */
-static inline int cpu_logical_map(int cpu)
-{
- return cpu;
-}
-static inline int cpu_number_map(int cpu)
-{
- return cpu;
-}
-
-/*
- * Some lowlevel functions might want to know about
- * the real APIC ID <-> CPU # mapping.
- */
-#define MAX_APICID 256
-extern volatile int cpu_to_physical_apicid[NR_CPUS];
-extern volatile int physical_apicid_to_cpu[MAX_APICID];
-extern volatile int cpu_to_logical_apicid[NR_CPUS];
-extern volatile int logical_apicid_to_cpu[MAX_APICID];
-
-/*
- * General functions that each host system must provide.
- */
-
-extern void smp_boot_cpus(void);
-extern void smp_store_cpu_info(int id); /* Store per CPU info
(like the initial udelay numbers */
-
-/*
- * This function is needed by all SMP systems. It must _always_ be valid
- * from the initial startup. We map APIC_BASE very early in page_setup(),
- * so this is correct in the x86 case.
- */
-
-#define smp_processor_id() (current->processor)
-
-#endif /* !__ASSEMBLY__ */
-
-#define NO_PROC_ID 0xFF /* No processor magic marker */
-
-/*
- * This magic constant controls our willingness to transfer
- * a process across CPUs. Such a transfer incurs misses on the L1
- * cache, and on a P6 or P5 with multiple L2 caches L2 hits. My
- * gut feeling is this will vary by board in value. For a board
- * with separate L2 cache it probably depends also on the RSS, and
- * for a board with shared L2 cache it ought to decay fast as other
- * processes are run.
- */
-
-#define PROC_CHANGE_PENALTY 15 /* Schedule penalty */
-
-#endif
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/asm-xen/system.h
--- a/linux-2.4.30-xen-sparse/include/asm-xen/system.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,424 +0,0 @@
-#ifndef __ASM_SYSTEM_H
-#define __ASM_SYSTEM_H
-
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/bitops.h>
-#include <asm/synch_bitops.h>
-#include <asm/segment.h>
-#include <asm/hypervisor.h>
-#include <asm/evtchn.h>
-
-#ifdef __KERNEL__
-
-struct task_struct;
-extern void FASTCALL(__switch_to(struct task_struct *prev,
- struct task_struct *next));
-
-#define prepare_to_switch() \
-do { \
- struct thread_struct *__t = ¤t->thread; \
- __asm__ __volatile__ ( "movl %%fs,%0" : "=m" (*(int *)&__t->fs) ); \
- __asm__ __volatile__ ( "movl %%gs,%0" : "=m" (*(int *)&__t->gs) ); \
-} while (0)
-#define switch_to(prev,next,last) do { \
- asm volatile("pushl %%esi\n\t" \
- "pushl %%edi\n\t" \
- "pushl %%ebp\n\t" \
- "movl %%esp,%0\n\t" /* save ESP */ \
- "movl %3,%%esp\n\t" /* restore ESP */ \
- "movl $1f,%1\n\t" /* save EIP */ \
- "pushl %4\n\t" /* restore EIP */ \
- "jmp __switch_to\n" \
- "1:\t" \
- "popl %%ebp\n\t" \
- "popl %%edi\n\t" \
- "popl %%esi\n\t" \
- :"=m" (prev->thread.esp),"=m" (prev->thread.eip), \
- "=b" (last) \
- :"m" (next->thread.esp),"m" (next->thread.eip), \
- "a" (prev), "d" (next), \
- "b" (prev)); \
-} while (0)
-
-#define _set_base(addr,base) do { unsigned long __pr; \
-__asm__ __volatile__ ("movw %%dx,%1\n\t" \
- "rorl $16,%%edx\n\t" \
- "movb %%dl,%2\n\t" \
- "movb %%dh,%3" \
- :"=&d" (__pr) \
- :"m" (*((addr)+2)), \
- "m" (*((addr)+4)), \
- "m" (*((addr)+7)), \
- "0" (base) \
- ); } while(0)
-
-#define _set_limit(addr,limit) do { unsigned long __lr; \
-__asm__ __volatile__ ("movw %%dx,%1\n\t" \
- "rorl $16,%%edx\n\t" \
- "movb %2,%%dh\n\t" \
- "andb $0xf0,%%dh\n\t" \
- "orb %%dh,%%dl\n\t" \
- "movb %%dl,%2" \
- :"=&d" (__lr) \
- :"m" (*(addr)), \
- "m" (*((addr)+6)), \
- "0" (limit) \
- ); } while(0)
-
-#define set_base(ldt,base) _set_base( ((char *)&(ldt)) , (base) )
-#define set_limit(ldt,limit) _set_limit( ((char *)&(ldt)) , ((limit)-1)>>12 )
-
-static inline unsigned long _get_base(char * addr)
-{
- unsigned long __base;
- __asm__("movb %3,%%dh\n\t"
- "movb %2,%%dl\n\t"
- "shll $16,%%edx\n\t"
- "movw %1,%%dx"
- :"=&d" (__base)
- :"m" (*((addr)+2)),
- "m" (*((addr)+4)),
- "m" (*((addr)+7)));
- return __base;
-}
-
-#define get_base(ldt) _get_base( ((char *)&(ldt)) )
-
-/*
- * Load a segment. Fall back on loading the zero
- * segment if something goes wrong..
- */
-#define loadsegment(seg,value) \
- asm volatile("\n" \
- "1:\t" \
- "movl %0,%%" #seg "\n" \
- "2:\n" \
- ".section .fixup,\"ax\"\n" \
- "3:\t" \
- "pushl $0\n\t" \
- "popl %%" #seg "\n\t" \
- "jmp 2b\n" \
- ".previous\n" \
- ".section __ex_table,\"a\"\n\t" \
- ".align 4\n\t" \
- ".long 1b,3b\n" \
- ".previous" \
- : :"m" (*(unsigned int *)&(value)))
-
-/* NB. 'clts' is done for us by Xen during virtual trap. */
-#define clts() ((void)0)
-#define stts() (HYPERVISOR_fpu_taskswitch(1))
-
-#endif /* __KERNEL__ */
-
-/**
- * __ffs - find first bit in word.
- * @word: The word to search
- *
- * Undefined if no bit exists, so code should check against 0 first.
- *
- * Taken from 2.6 for Xen.
- */
-static inline unsigned long __ffs(unsigned long word)
-{
- __asm__("bsfl %1,%0"
- :"=r" (word)
- :"rm" (word));
- return word;
-}
-
-static inline unsigned long get_limit(unsigned long segment)
-{
- unsigned long __limit;
- __asm__("lsll %1,%0"
- :"=r" (__limit):"r" (segment));
- return __limit+1;
-}
-
-#define nop() __asm__ __volatile__ ("nop")
-
-#define xchg(ptr,v) ((__typeof__(*(ptr)))__xchg((unsigned
long)(v),(ptr),sizeof(*(ptr))))
-
-#define tas(ptr) (xchg((ptr),1))
-
-struct __xchg_dummy { unsigned long a[100]; };
-#define __xg(x) ((struct __xchg_dummy *)(x))
-
-
-/*
- * The semantics of XCHGCMP8B are a bit strange, this is why
- * there is a loop and the loading of %%eax and %%edx has to
- * be inside. This inlines well in most cases, the cached
- * cost is around ~38 cycles. (in the future we might want
- * to do an SIMD/3DNOW!/MMX/FPU 64-bit store here, but that
- * might have an implicit FPU-save as a cost, so it's not
- * clear which path to go.)
- *
- * chmxchg8b must be used with the lock prefix here to allow
- * the instruction to be executed atomically, see page 3-102
- * of the instruction set reference 24319102.pdf. We need
- * the reader side to see the coherent 64bit value.
- */
-static inline void __set_64bit (unsigned long long * ptr,
- unsigned int low, unsigned int high)
-{
- __asm__ __volatile__ (
- "\n1:\t"
- "movl (%0), %%eax\n\t"
- "movl 4(%0), %%edx\n\t"
- "lock cmpxchg8b (%0)\n\t"
- "jnz 1b"
- : /* no outputs */
- : "D"(ptr),
- "b"(low),
- "c"(high)
- : "ax","dx","memory");
-}
-
-static inline void __set_64bit_constant (unsigned long long *ptr,
- unsigned long long value)
-{
- __set_64bit(ptr,(unsigned int)(value), (unsigned int)((value)>>32ULL));
-}
-#define ll_low(x) *(((unsigned int*)&(x))+0)
-#define ll_high(x) *(((unsigned int*)&(x))+1)
-
-static inline void __set_64bit_var (unsigned long long *ptr,
- unsigned long long value)
-{
- __set_64bit(ptr,ll_low(value), ll_high(value));
-}
-
-#define set_64bit(ptr,value) \
-(__builtin_constant_p(value) ? \
- __set_64bit_constant(ptr, value) : \
- __set_64bit_var(ptr, value) )
-
-#define _set_64bit(ptr,value) \
-(__builtin_constant_p(value) ? \
- __set_64bit(ptr, (unsigned int)(value), (unsigned int)((value)>>32ULL) ) : \
- __set_64bit(ptr, ll_low(value), ll_high(value)) )
-
-/*
- * Note: no "lock" prefix even on SMP: xchg always implies lock anyway
- * Note 2: xchg has side effect, so that attribute volatile is necessary,
- * but generally the primitive is invalid, *ptr is output argument. --ANK
- */
-static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int
size)
-{
- switch (size) {
- case 1:
- __asm__ __volatile__("xchgb %b0,%1"
- :"=q" (x)
- :"m" (*__xg(ptr)), "0" (x)
- :"memory");
- break;
- case 2:
- __asm__ __volatile__("xchgw %w0,%1"
- :"=r" (x)
- :"m" (*__xg(ptr)), "0" (x)
- :"memory");
- break;
- case 4:
- __asm__ __volatile__("xchgl %0,%1"
- :"=r" (x)
- :"m" (*__xg(ptr)), "0" (x)
- :"memory");
- break;
- }
- return x;
-}
-
-/*
- * Atomic compare and exchange. Compare OLD with MEM, if identical,
- * store NEW in MEM. Return the initial value in MEM. Success is
- * indicated by comparing RETURN with OLD.
- */
-
-#ifdef CONFIG_X86_CMPXCHG
-#define __HAVE_ARCH_CMPXCHG 1
-
-static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
- unsigned long new, int size)
-{
- unsigned long prev;
- switch (size) {
- case 1:
- __asm__ __volatile__("lock cmpxchgb %b1,%2"
- : "=a"(prev)
- : "q"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- case 2:
- __asm__ __volatile__("lock cmpxchgw %w1,%2"
- : "=a"(prev)
- : "q"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- case 4:
- __asm__ __volatile__("lock cmpxchgl %1,%2"
- : "=a"(prev)
- : "q"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- }
- return old;
-}
-
-#define cmpxchg(ptr,o,n)\
- ((__typeof__(*(ptr)))__cmpxchg((ptr),(unsigned long)(o),\
- (unsigned long)(n),sizeof(*(ptr))))
-
-#else
-/* Compiling for a 386 proper. Is it worth implementing via cli/sti? */
-#endif
-
-/*
- * Force strict CPU ordering.
- * And yes, this is required on UP too when we're talking
- * to devices.
- *
- * For now, "wmb()" doesn't actually do anything, as all
- * Intel CPU's follow what Intel calls a *Processor Order*,
- * in which all writes are seen in the program order even
- * outside the CPU.
- *
- * I expect future Intel CPU's to have a weaker ordering,
- * but I'd also expect them to finally get their act together
- * and add some real memory barriers if so.
- *
- * Some non intel clones support out of order store. wmb() ceases to be a
- * nop for these.
- */
-
-#define mb() __asm__ __volatile__ ("lock; addl $0,0(%%esp)": : :"memory")
-#define rmb() mb()
-
-#ifdef CONFIG_X86_OOSTORE
-#define wmb() __asm__ __volatile__ ("lock; addl $0,0(%%esp)": : :"memory")
-#else
-#define wmb() __asm__ __volatile__ ("": : :"memory")
-#endif
-
-#ifdef CONFIG_SMP
-#define smp_mb() mb()
-#define smp_rmb() rmb()
-#define smp_wmb() wmb()
-#define set_mb(var, value) do { xchg(&var, value); } while (0)
-#else
-#define smp_mb() barrier()
-#define smp_rmb() barrier()
-#define smp_wmb() barrier()
-#define set_mb(var, value) do { var = value; barrier(); } while (0)
-#endif
-
-#define set_wmb(var, value) do { var = value; wmb(); } while (0)
-
-#define safe_halt() ((void)0)
-
-/*
- * The use of 'barrier' in the following reflects their use as local-lock
- * operations. Reentrancy must be prevented (e.g., __cli()) /before/ following
- * critical operations are executed. All critical operatiosn must complete
- * /before/ reentrancy is permitted (e.g., __sti()). Alpha architecture also
- * includes these barriers, for example.
- */
-
-#define __cli() \
-do { \
- HYPERVISOR_shared_info->vcpu_data[0].evtchn_upcall_mask = 1; \
- barrier(); \
-} while (0)
-
-#define __sti() \
-do { \
- shared_info_t *_shared = HYPERVISOR_shared_info; \
- barrier(); \
- _shared->vcpu_data[0].evtchn_upcall_mask = 0; \
- barrier(); /* unmask then check (avoid races) */ \
- if ( unlikely(_shared->vcpu_data[0].evtchn_upcall_pending) ) \
- force_evtchn_callback(); \
-} while (0)
-
-#define __save_flags(x) \
-do { \
- (x) = HYPERVISOR_shared_info->vcpu_data[0].evtchn_upcall_mask; \
-} while (0)
-
-#define __restore_flags(x) \
-do { \
- shared_info_t *_shared = HYPERVISOR_shared_info; \
- barrier(); \
- if ( (_shared->vcpu_data[0].evtchn_upcall_mask = x) == 0 ) { \
- barrier(); /* unmask then check (avoid races) */ \
- if ( unlikely(_shared->vcpu_data[0].evtchn_upcall_pending) ) \
- force_evtchn_callback(); \
- } \
-} while (0)
-
-#define __save_and_cli(x) \
-do { \
- (x) = HYPERVISOR_shared_info->vcpu_data[0].evtchn_upcall_mask; \
- HYPERVISOR_shared_info->vcpu_data[0].evtchn_upcall_mask = 1; \
- barrier(); \
-} while (0)
-
-#define __save_and_sti(x) \
-do { \
- shared_info_t *_shared = HYPERVISOR_shared_info; \
- barrier(); \
- (x) = _shared->vcpu_data[0].evtchn_upcall_mask; \
- _shared->vcpu_data[0].evtchn_upcall_mask = 0; \
- barrier(); /* unmask then check (avoid races) */ \
- if ( unlikely(_shared->vcpu_data[0].evtchn_upcall_pending) ) \
- force_evtchn_callback(); \
-} while (0)
-
-#define local_irq_save(x) __save_and_cli(x)
-#define local_irq_set(x) __save_and_sti(x)
-#define local_irq_restore(x) __restore_flags(x)
-#define local_irq_disable() __cli()
-#define local_irq_enable() __sti()
-
-
-#ifdef CONFIG_SMP
-#error no SMP
-extern void __global_cli(void);
-extern void __global_sti(void);
-extern unsigned long __global_save_flags(void);
-extern void __global_restore_flags(unsigned long);
-#define cli() __global_cli()
-#define sti() __global_sti()
-#define save_flags(x) ((x)=__global_save_flags())
-#define restore_flags(x) __global_restore_flags(x)
-#define save_and_cli(x) do { save_flags(x); cli(); } while(0);
-#define save_and_sti(x) do { save_flags(x); sti(); } while(0);
-
-#else
-
-#define cli() __cli()
-#define sti() __sti()
-#define save_flags(x) __save_flags(x)
-#define restore_flags(x) __restore_flags(x)
-#define save_and_cli(x) __save_and_cli(x)
-#define save_and_sti(x) __save_and_sti(x)
-
-#endif
-
-/*
- * disable hlt during certain critical i/o operations
- */
-#define HAVE_DISABLE_HLT
-void disable_hlt(void);
-void enable_hlt(void);
-
-extern unsigned long dmi_broken;
-extern int is_sony_vaio_laptop;
-
-#define BROKEN_ACPI_Sx 0x0001
-#define BROKEN_INIT_AFTER_S1 0x0002
-#define BROKEN_PNP_BIOS 0x0004
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/asm-xen/vga.h
--- a/linux-2.4.30-xen-sparse/include/asm-xen/vga.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,42 +0,0 @@
-/*
- * Access to VGA videoram
- *
- * (c) 1998 Martin Mares <mj@xxxxxx>
- */
-
-#ifndef _LINUX_ASM_VGA_H_
-#define _LINUX_ASM_VGA_H_
-
-#include <asm/io.h>
-
-extern unsigned char *vgacon_mmap;
-
-static unsigned long VGA_MAP_MEM(unsigned long x)
-{
- if( vgacon_mmap == NULL )
- {
- /* This is our first time in this function. This whole thing
- is a rather grim hack. We know we're going to get asked
- to map a 32KB region between 0xb0000 and 0xb8000 because
- that's what VGAs are. We used the boot time permanent
- fixed map region, and map it to machine pages.
- */
- if( x != 0xb8000 )
- panic("Argghh! VGA Console is weird. 1:%08lx\n",x);
-
- vgacon_mmap = (unsigned char*) bt_ioremap( 0xa0000, 128*1024 );
- return (unsigned long) (vgacon_mmap+x-0xa0000);
- }
- else
- {
- if( x != 0xc0000 && x != 0xa0000 ) /* vidmem_end or charmap fonts */
- panic("Argghh! VGA Console is weird. 2:%08lx\n",x);
- return (unsigned long) (vgacon_mmap+x-0xa0000);
- }
- return 0;
-}
-
-static inline unsigned char vga_readb(unsigned char * x) { return (*(x)); }
-static inline void vga_writeb(unsigned char x, unsigned char *y) { *(y) = (x);
}
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/asm-xen/xor.h
--- a/linux-2.4.30-xen-sparse/include/asm-xen/xor.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,879 +0,0 @@
-/*
- * include/asm-i386/xor.h
- *
- * Optimized RAID-5 checksumming functions for MMX and SSE.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * You should have received a copy of the GNU General Public License
- * (for example /usr/src/linux/COPYING); if not, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-/*
- * High-speed RAID5 checksumming functions utilizing MMX instructions.
- * Copyright (C) 1998 Ingo Molnar.
- */
-
-#define FPU_SAVE \
- do { \
- if (!(current->flags & PF_USEDFPU)) \
- clts(); \
- __asm__ __volatile__ ("fsave %0; fwait": "=m"(fpu_save[0])); \
- } while (0)
-
-#define FPU_RESTORE \
- do { \
- __asm__ __volatile__ ("frstor %0": : "m"(fpu_save[0])); \
- if (!(current->flags & PF_USEDFPU)) \
- stts(); \
- } while (0)
-
-#define LD(x,y) " movq 8*("#x")(%1), %%mm"#y" ;\n"
-#define ST(x,y) " movq %%mm"#y", 8*("#x")(%1) ;\n"
-#define XO1(x,y) " pxor 8*("#x")(%2), %%mm"#y" ;\n"
-#define XO2(x,y) " pxor 8*("#x")(%3), %%mm"#y" ;\n"
-#define XO3(x,y) " pxor 8*("#x")(%4), %%mm"#y" ;\n"
-#define XO4(x,y) " pxor 8*("#x")(%5), %%mm"#y" ;\n"
-
-
-static void
-xor_pII_mmx_2(unsigned long bytes, unsigned long *p1, unsigned long *p2)
-{
- unsigned long lines = bytes >> 7;
- char fpu_save[108];
-
- FPU_SAVE;
-
- __asm__ __volatile__ (
-#undef BLOCK
-#define BLOCK(i) \
- LD(i,0) \
- LD(i+1,1) \
- LD(i+2,2) \
- LD(i+3,3) \
- XO1(i,0) \
- ST(i,0) \
- XO1(i+1,1) \
- ST(i+1,1) \
- XO1(i+2,2) \
- ST(i+2,2) \
- XO1(i+3,3) \
- ST(i+3,3)
-
- " .align 32 ;\n"
- " 1: ;\n"
-
- BLOCK(0)
- BLOCK(4)
- BLOCK(8)
- BLOCK(12)
-
- " addl $128, %1 ;\n"
- " addl $128, %2 ;\n"
- " decl %0 ;\n"
- " jnz 1b ;\n"
- : "+r" (lines),
- "+r" (p1), "+r" (p2)
- :
- : "memory");
-
- FPU_RESTORE;
-}
-
-static void
-xor_pII_mmx_3(unsigned long bytes, unsigned long *p1, unsigned long *p2,
- unsigned long *p3)
-{
- unsigned long lines = bytes >> 7;
- char fpu_save[108];
-
- FPU_SAVE;
-
- __asm__ __volatile__ (
-#undef BLOCK
-#define BLOCK(i) \
- LD(i,0) \
- LD(i+1,1) \
- LD(i+2,2) \
- LD(i+3,3) \
- XO1(i,0) \
- XO1(i+1,1) \
- XO1(i+2,2) \
- XO1(i+3,3) \
- XO2(i,0) \
- ST(i,0) \
- XO2(i+1,1) \
- ST(i+1,1) \
- XO2(i+2,2) \
- ST(i+2,2) \
- XO2(i+3,3) \
- ST(i+3,3)
-
- " .align 32 ;\n"
- " 1: ;\n"
-
- BLOCK(0)
- BLOCK(4)
- BLOCK(8)
- BLOCK(12)
-
- " addl $128, %1 ;\n"
- " addl $128, %2 ;\n"
- " addl $128, %3 ;\n"
- " decl %0 ;\n"
- " jnz 1b ;\n"
- : "+r" (lines),
- "+r" (p1), "+r" (p2), "+r" (p3)
- :
- : "memory");
-
- FPU_RESTORE;
-}
-
-static void
-xor_pII_mmx_4(unsigned long bytes, unsigned long *p1, unsigned long *p2,
- unsigned long *p3, unsigned long *p4)
-{
- unsigned long lines = bytes >> 7;
- char fpu_save[108];
-
- FPU_SAVE;
-
- __asm__ __volatile__ (
-#undef BLOCK
-#define BLOCK(i) \
- LD(i,0) \
- LD(i+1,1) \
- LD(i+2,2) \
- LD(i+3,3) \
- XO1(i,0) \
- XO1(i+1,1) \
- XO1(i+2,2) \
- XO1(i+3,3) \
- XO2(i,0) \
- XO2(i+1,1) \
- XO2(i+2,2) \
- XO2(i+3,3) \
- XO3(i,0) \
- ST(i,0) \
- XO3(i+1,1) \
- ST(i+1,1) \
- XO3(i+2,2) \
- ST(i+2,2) \
- XO3(i+3,3) \
- ST(i+3,3)
-
- " .align 32 ;\n"
- " 1: ;\n"
-
- BLOCK(0)
- BLOCK(4)
- BLOCK(8)
- BLOCK(12)
-
- " addl $128, %1 ;\n"
- " addl $128, %2 ;\n"
- " addl $128, %3 ;\n"
- " addl $128, %4 ;\n"
- " decl %0 ;\n"
- " jnz 1b ;\n"
- : "+r" (lines),
- "+r" (p1), "+r" (p2), "+r" (p3), "+r" (p4)
- :
- : "memory");
-
- FPU_RESTORE;
-}
-
-
-static void
-xor_pII_mmx_5(unsigned long bytes, unsigned long *p1, unsigned long *p2,
- unsigned long *p3, unsigned long *p4, unsigned long *p5)
-{
- unsigned long lines = bytes >> 7;
- char fpu_save[108];
-
- FPU_SAVE;
-
- /* need to save/restore p4/p5 manually otherwise gcc's 10 argument
- limit gets exceeded (+ counts as two arguments) */
- __asm__ __volatile__ (
- " pushl %4\n"
- " pushl %5\n"
-#undef BLOCK
-#define BLOCK(i) \
- LD(i,0) \
- LD(i+1,1) \
- LD(i+2,2) \
- LD(i+3,3) \
- XO1(i,0) \
- XO1(i+1,1) \
- XO1(i+2,2) \
- XO1(i+3,3) \
- XO2(i,0) \
- XO2(i+1,1) \
- XO2(i+2,2) \
- XO2(i+3,3) \
- XO3(i,0) \
- XO3(i+1,1) \
- XO3(i+2,2) \
- XO3(i+3,3) \
- XO4(i,0) \
- ST(i,0) \
- XO4(i+1,1) \
- ST(i+1,1) \
- XO4(i+2,2) \
- ST(i+2,2) \
- XO4(i+3,3) \
- ST(i+3,3)
-
- " .align 32 ;\n"
- " 1: ;\n"
-
- BLOCK(0)
- BLOCK(4)
- BLOCK(8)
- BLOCK(12)
-
- " addl $128, %1 ;\n"
- " addl $128, %2 ;\n"
- " addl $128, %3 ;\n"
- " addl $128, %4 ;\n"
- " addl $128, %5 ;\n"
- " decl %0 ;\n"
- " jnz 1b ;\n"
- " popl %5\n"
- " popl %4\n"
- : "+r" (lines),
- "+r" (p1), "+r" (p2), "+r" (p3)
- : "r" (p4), "r" (p5)
- : "memory");
-
- FPU_RESTORE;
-}
-
-#undef LD
-#undef XO1
-#undef XO2
-#undef XO3
-#undef XO4
-#undef ST
-#undef BLOCK
-
-static void
-xor_p5_mmx_2(unsigned long bytes, unsigned long *p1, unsigned long *p2)
-{
- unsigned long lines = bytes >> 6;
- char fpu_save[108];
-
- FPU_SAVE;
-
- __asm__ __volatile__ (
- " .align 32 ;\n"
- " 1: ;\n"
- " movq (%1), %%mm0 ;\n"
- " movq 8(%1), %%mm1 ;\n"
- " pxor (%2), %%mm0 ;\n"
- " movq 16(%1), %%mm2 ;\n"
- " movq %%mm0, (%1) ;\n"
- " pxor 8(%2), %%mm1 ;\n"
- " movq 24(%1), %%mm3 ;\n"
- " movq %%mm1, 8(%1) ;\n"
- " pxor 16(%2), %%mm2 ;\n"
- " movq 32(%1), %%mm4 ;\n"
- " movq %%mm2, 16(%1) ;\n"
- " pxor 24(%2), %%mm3 ;\n"
- " movq 40(%1), %%mm5 ;\n"
- " movq %%mm3, 24(%1) ;\n"
- " pxor 32(%2), %%mm4 ;\n"
- " movq 48(%1), %%mm6 ;\n"
- " movq %%mm4, 32(%1) ;\n"
- " pxor 40(%2), %%mm5 ;\n"
- " movq 56(%1), %%mm7 ;\n"
- " movq %%mm5, 40(%1) ;\n"
- " pxor 48(%2), %%mm6 ;\n"
- " pxor 56(%2), %%mm7 ;\n"
- " movq %%mm6, 48(%1) ;\n"
- " movq %%mm7, 56(%1) ;\n"
-
- " addl $64, %1 ;\n"
- " addl $64, %2 ;\n"
- " decl %0 ;\n"
- " jnz 1b ;\n"
- : "+r" (lines),
- "+r" (p1), "+r" (p2)
- :
- : "memory");
-
- FPU_RESTORE;
-}
-
-static void
-xor_p5_mmx_3(unsigned long bytes, unsigned long *p1, unsigned long *p2,
- unsigned long *p3)
-{
- unsigned long lines = bytes >> 6;
- char fpu_save[108];
-
- FPU_SAVE;
-
- __asm__ __volatile__ (
- " .align 32,0x90 ;\n"
- " 1: ;\n"
- " movq (%1), %%mm0 ;\n"
- " movq 8(%1), %%mm1 ;\n"
- " pxor (%2), %%mm0 ;\n"
- " movq 16(%1), %%mm2 ;\n"
- " pxor 8(%2), %%mm1 ;\n"
- " pxor (%3), %%mm0 ;\n"
- " pxor 16(%2), %%mm2 ;\n"
- " movq %%mm0, (%1) ;\n"
- " pxor 8(%3), %%mm1 ;\n"
- " pxor 16(%3), %%mm2 ;\n"
- " movq 24(%1), %%mm3 ;\n"
- " movq %%mm1, 8(%1) ;\n"
- " movq 32(%1), %%mm4 ;\n"
- " movq 40(%1), %%mm5 ;\n"
- " pxor 24(%2), %%mm3 ;\n"
- " movq %%mm2, 16(%1) ;\n"
- " pxor 32(%2), %%mm4 ;\n"
- " pxor 24(%3), %%mm3 ;\n"
- " pxor 40(%2), %%mm5 ;\n"
- " movq %%mm3, 24(%1) ;\n"
- " pxor 32(%3), %%mm4 ;\n"
- " pxor 40(%3), %%mm5 ;\n"
- " movq 48(%1), %%mm6 ;\n"
- " movq %%mm4, 32(%1) ;\n"
- " movq 56(%1), %%mm7 ;\n"
- " pxor 48(%2), %%mm6 ;\n"
- " movq %%mm5, 40(%1) ;\n"
- " pxor 56(%2), %%mm7 ;\n"
- " pxor 48(%3), %%mm6 ;\n"
- " pxor 56(%3), %%mm7 ;\n"
- " movq %%mm6, 48(%1) ;\n"
- " movq %%mm7, 56(%1) ;\n"
-
- " addl $64, %1 ;\n"
- " addl $64, %2 ;\n"
- " addl $64, %3 ;\n"
- " decl %0 ;\n"
- " jnz 1b ;\n"
- : "+r" (lines),
- "+r" (p1), "+r" (p2), "+r" (p3)
- :
- : "memory" );
-
- FPU_RESTORE;
-}
-
-static void
-xor_p5_mmx_4(unsigned long bytes, unsigned long *p1, unsigned long *p2,
- unsigned long *p3, unsigned long *p4)
-{
- unsigned long lines = bytes >> 6;
- char fpu_save[108];
-
- FPU_SAVE;
-
- __asm__ __volatile__ (
- " .align 32,0x90 ;\n"
- " 1: ;\n"
- " movq (%1), %%mm0 ;\n"
- " movq 8(%1), %%mm1 ;\n"
- " pxor (%2), %%mm0 ;\n"
- " movq 16(%1), %%mm2 ;\n"
- " pxor 8(%2), %%mm1 ;\n"
- " pxor (%3), %%mm0 ;\n"
- " pxor 16(%2), %%mm2 ;\n"
- " pxor 8(%3), %%mm1 ;\n"
- " pxor (%4), %%mm0 ;\n"
- " movq 24(%1), %%mm3 ;\n"
- " pxor 16(%3), %%mm2 ;\n"
- " pxor 8(%4), %%mm1 ;\n"
- " movq %%mm0, (%1) ;\n"
- " movq 32(%1), %%mm4 ;\n"
- " pxor 24(%2), %%mm3 ;\n"
- " pxor 16(%4), %%mm2 ;\n"
- " movq %%mm1, 8(%1) ;\n"
- " movq 40(%1), %%mm5 ;\n"
- " pxor 32(%2), %%mm4 ;\n"
- " pxor 24(%3), %%mm3 ;\n"
- " movq %%mm2, 16(%1) ;\n"
- " pxor 40(%2), %%mm5 ;\n"
- " pxor 32(%3), %%mm4 ;\n"
- " pxor 24(%4), %%mm3 ;\n"
- " movq %%mm3, 24(%1) ;\n"
- " movq 56(%1), %%mm7 ;\n"
- " movq 48(%1), %%mm6 ;\n"
- " pxor 40(%3), %%mm5 ;\n"
- " pxor 32(%4), %%mm4 ;\n"
- " pxor 48(%2), %%mm6 ;\n"
- " movq %%mm4, 32(%1) ;\n"
- " pxor 56(%2), %%mm7 ;\n"
- " pxor 40(%4), %%mm5 ;\n"
- " pxor 48(%3), %%mm6 ;\n"
- " pxor 56(%3), %%mm7 ;\n"
- " movq %%mm5, 40(%1) ;\n"
- " pxor 48(%4), %%mm6 ;\n"
- " pxor 56(%4), %%mm7 ;\n"
- " movq %%mm6, 48(%1) ;\n"
- " movq %%mm7, 56(%1) ;\n"
-
- " addl $64, %1 ;\n"
- " addl $64, %2 ;\n"
- " addl $64, %3 ;\n"
- " addl $64, %4 ;\n"
- " decl %0 ;\n"
- " jnz 1b ;\n"
- : "+r" (lines),
- "+r" (p1), "+r" (p2), "+r" (p3), "+r" (p4)
- :
- : "memory");
-
- FPU_RESTORE;
-}
-
-static void
-xor_p5_mmx_5(unsigned long bytes, unsigned long *p1, unsigned long *p2,
- unsigned long *p3, unsigned long *p4, unsigned long *p5)
-{
- unsigned long lines = bytes >> 6;
- char fpu_save[108];
-
- FPU_SAVE;
-
- /* need to save p4/p5 manually to not exceed gcc's 10 argument limit */
- __asm__ __volatile__ (
- " pushl %4\n"
- " pushl %5\n"
- " .align 32,0x90 ;\n"
- " 1: ;\n"
- " movq (%1), %%mm0 ;\n"
- " movq 8(%1), %%mm1 ;\n"
- " pxor (%2), %%mm0 ;\n"
- " pxor 8(%2), %%mm1 ;\n"
- " movq 16(%1), %%mm2 ;\n"
- " pxor (%3), %%mm0 ;\n"
- " pxor 8(%3), %%mm1 ;\n"
- " pxor 16(%2), %%mm2 ;\n"
- " pxor (%4), %%mm0 ;\n"
- " pxor 8(%4), %%mm1 ;\n"
- " pxor 16(%3), %%mm2 ;\n"
- " movq 24(%1), %%mm3 ;\n"
- " pxor (%5), %%mm0 ;\n"
- " pxor 8(%5), %%mm1 ;\n"
- " movq %%mm0, (%1) ;\n"
- " pxor 16(%4), %%mm2 ;\n"
- " pxor 24(%2), %%mm3 ;\n"
- " movq %%mm1, 8(%1) ;\n"
- " pxor 16(%5), %%mm2 ;\n"
- " pxor 24(%3), %%mm3 ;\n"
- " movq 32(%1), %%mm4 ;\n"
- " movq %%mm2, 16(%1) ;\n"
- " pxor 24(%4), %%mm3 ;\n"
- " pxor 32(%2), %%mm4 ;\n"
- " movq 40(%1), %%mm5 ;\n"
- " pxor 24(%5), %%mm3 ;\n"
- " pxor 32(%3), %%mm4 ;\n"
- " pxor 40(%2), %%mm5 ;\n"
- " movq %%mm3, 24(%1) ;\n"
- " pxor 32(%4), %%mm4 ;\n"
- " pxor 40(%3), %%mm5 ;\n"
- " movq 48(%1), %%mm6 ;\n"
- " movq 56(%1), %%mm7 ;\n"
- " pxor 32(%5), %%mm4 ;\n"
- " pxor 40(%4), %%mm5 ;\n"
- " pxor 48(%2), %%mm6 ;\n"
- " pxor 56(%2), %%mm7 ;\n"
- " movq %%mm4, 32(%1) ;\n"
- " pxor 48(%3), %%mm6 ;\n"
- " pxor 56(%3), %%mm7 ;\n"
- " pxor 40(%5), %%mm5 ;\n"
- " pxor 48(%4), %%mm6 ;\n"
- " pxor 56(%4), %%mm7 ;\n"
- " movq %%mm5, 40(%1) ;\n"
- " pxor 48(%5), %%mm6 ;\n"
- " pxor 56(%5), %%mm7 ;\n"
- " movq %%mm6, 48(%1) ;\n"
- " movq %%mm7, 56(%1) ;\n"
-
- " addl $64, %1 ;\n"
- " addl $64, %2 ;\n"
- " addl $64, %3 ;\n"
- " addl $64, %4 ;\n"
- " addl $64, %5 ;\n"
- " decl %0 ;\n"
- " jnz 1b ;\n"
- " popl %5\n"
- " popl %4\n"
- : "+g" (lines),
- "+r" (p1), "+r" (p2), "+r" (p3)
- : "r" (p4), "r" (p5)
- : "memory");
-
- FPU_RESTORE;
-}
-
-static struct xor_block_template xor_block_pII_mmx = {
- name: "pII_mmx",
- do_2: xor_pII_mmx_2,
- do_3: xor_pII_mmx_3,
- do_4: xor_pII_mmx_4,
- do_5: xor_pII_mmx_5,
-};
-
-static struct xor_block_template xor_block_p5_mmx = {
- name: "p5_mmx",
- do_2: xor_p5_mmx_2,
- do_3: xor_p5_mmx_3,
- do_4: xor_p5_mmx_4,
- do_5: xor_p5_mmx_5,
-};
-
-#undef FPU_SAVE
-#undef FPU_RESTORE
-
-/*
- * Cache avoiding checksumming functions utilizing KNI instructions
- * Copyright (C) 1999 Zach Brown (with obvious credit due Ingo)
- */
-
-#define XMMS_SAVE \
- if (!(current->flags & PF_USEDFPU)) \
- clts(); \
- __asm__ __volatile__ ( \
- "movups %%xmm0,(%1) ;\n\t" \
- "movups %%xmm1,0x10(%1) ;\n\t" \
- "movups %%xmm2,0x20(%1) ;\n\t" \
- "movups %%xmm3,0x30(%1) ;\n\t" \
- : "=&r" (cr0) \
- : "r" (xmm_save) \
- : "memory")
-
-#define XMMS_RESTORE \
- __asm__ __volatile__ ( \
- "sfence ;\n\t" \
- "movups (%1),%%xmm0 ;\n\t" \
- "movups 0x10(%1),%%xmm1 ;\n\t" \
- "movups 0x20(%1),%%xmm2 ;\n\t" \
- "movups 0x30(%1),%%xmm3 ;\n\t" \
- : \
- : "r" (cr0), "r" (xmm_save) \
- : "memory"); \
- if (!(current->flags & PF_USEDFPU)) \
- stts()
-
-#define ALIGN16 __attribute__((aligned(16)))
-
-#define OFFS(x) "16*("#x")"
-#define PF_OFFS(x) "256+16*("#x")"
-#define PF0(x) " prefetchnta "PF_OFFS(x)"(%1)
;\n"
-#define LD(x,y) " movaps "OFFS(x)"(%1), %%xmm"#y"
;\n"
-#define ST(x,y) " movaps %%xmm"#y", "OFFS(x)"(%1)
;\n"
-#define PF1(x) " prefetchnta "PF_OFFS(x)"(%2) ;\n"
-#define PF2(x) " prefetchnta "PF_OFFS(x)"(%3) ;\n"
-#define PF3(x) " prefetchnta "PF_OFFS(x)"(%4) ;\n"
-#define PF4(x) " prefetchnta "PF_OFFS(x)"(%5) ;\n"
-#define PF5(x) " prefetchnta "PF_OFFS(x)"(%6) ;\n"
-#define XO1(x,y) " xorps "OFFS(x)"(%2), %%xmm"#y" ;\n"
-#define XO2(x,y) " xorps "OFFS(x)"(%3), %%xmm"#y" ;\n"
-#define XO3(x,y) " xorps "OFFS(x)"(%4), %%xmm"#y" ;\n"
-#define XO4(x,y) " xorps "OFFS(x)"(%5), %%xmm"#y" ;\n"
-#define XO5(x,y) " xorps "OFFS(x)"(%6), %%xmm"#y" ;\n"
-
-
-static void
-xor_sse_2(unsigned long bytes, unsigned long *p1, unsigned long *p2)
-{
- unsigned long lines = bytes >> 8;
- char xmm_save[16*4] ALIGN16;
- int cr0;
-
- XMMS_SAVE;
-
- __asm__ __volatile__ (
-#undef BLOCK
-#define BLOCK(i) \
- LD(i,0) \
- LD(i+1,1) \
- PF1(i) \
- PF1(i+2) \
- LD(i+2,2) \
- LD(i+3,3) \
- PF0(i+4) \
- PF0(i+6) \
- XO1(i,0) \
- XO1(i+1,1) \
- XO1(i+2,2) \
- XO1(i+3,3) \
- ST(i,0) \
- ST(i+1,1) \
- ST(i+2,2) \
- ST(i+3,3) \
-
-
- PF0(0)
- PF0(2)
-
- " .align 32 ;\n"
- " 1: ;\n"
-
- BLOCK(0)
- BLOCK(4)
- BLOCK(8)
- BLOCK(12)
-
- " addl $256, %1 ;\n"
- " addl $256, %2 ;\n"
- " decl %0 ;\n"
- " jnz 1b ;\n"
- : "+r" (lines),
- "+r" (p1), "+r" (p2)
- :
- : "memory");
-
- XMMS_RESTORE;
-}
-
-static void
-xor_sse_3(unsigned long bytes, unsigned long *p1, unsigned long *p2,
- unsigned long *p3)
-{
- unsigned long lines = bytes >> 8;
- char xmm_save[16*4] ALIGN16;
- int cr0;
-
- XMMS_SAVE;
-
- __asm__ __volatile__ (
-#undef BLOCK
-#define BLOCK(i) \
- PF1(i) \
- PF1(i+2) \
- LD(i,0) \
- LD(i+1,1) \
- LD(i+2,2) \
- LD(i+3,3) \
- PF2(i) \
- PF2(i+2) \
- PF0(i+4) \
- PF0(i+6) \
- XO1(i,0) \
- XO1(i+1,1) \
- XO1(i+2,2) \
- XO1(i+3,3) \
- XO2(i,0) \
- XO2(i+1,1) \
- XO2(i+2,2) \
- XO2(i+3,3) \
- ST(i,0) \
- ST(i+1,1) \
- ST(i+2,2) \
- ST(i+3,3) \
-
-
- PF0(0)
- PF0(2)
-
- " .align 32 ;\n"
- " 1: ;\n"
-
- BLOCK(0)
- BLOCK(4)
- BLOCK(8)
- BLOCK(12)
-
- " addl $256, %1 ;\n"
- " addl $256, %2 ;\n"
- " addl $256, %3 ;\n"
- " decl %0 ;\n"
- " jnz 1b ;\n"
- : "+r" (lines),
- "+r" (p1), "+r"(p2), "+r"(p3)
- :
- : "memory" );
-
- XMMS_RESTORE;
-}
-
-static void
-xor_sse_4(unsigned long bytes, unsigned long *p1, unsigned long *p2,
- unsigned long *p3, unsigned long *p4)
-{
- unsigned long lines = bytes >> 8;
- char xmm_save[16*4] ALIGN16;
- int cr0;
-
- XMMS_SAVE;
-
- __asm__ __volatile__ (
-#undef BLOCK
-#define BLOCK(i) \
- PF1(i) \
- PF1(i+2) \
- LD(i,0) \
- LD(i+1,1) \
- LD(i+2,2) \
- LD(i+3,3) \
- PF2(i) \
- PF2(i+2) \
- XO1(i,0) \
- XO1(i+1,1) \
- XO1(i+2,2) \
- XO1(i+3,3) \
- PF3(i) \
- PF3(i+2) \
- PF0(i+4) \
- PF0(i+6) \
- XO2(i,0) \
- XO2(i+1,1) \
- XO2(i+2,2) \
- XO2(i+3,3) \
- XO3(i,0) \
- XO3(i+1,1) \
- XO3(i+2,2) \
- XO3(i+3,3) \
- ST(i,0) \
- ST(i+1,1) \
- ST(i+2,2) \
- ST(i+3,3) \
-
-
- PF0(0)
- PF0(2)
-
- " .align 32 ;\n"
- " 1: ;\n"
-
- BLOCK(0)
- BLOCK(4)
- BLOCK(8)
- BLOCK(12)
-
- " addl $256, %1 ;\n"
- " addl $256, %2 ;\n"
- " addl $256, %3 ;\n"
- " addl $256, %4 ;\n"
- " decl %0 ;\n"
- " jnz 1b ;\n"
- : "+r" (lines),
- "+r" (p1), "+r" (p2), "+r" (p3), "+r" (p4)
- :
- : "memory" );
-
- XMMS_RESTORE;
-}
-
-static void
-xor_sse_5(unsigned long bytes, unsigned long *p1, unsigned long *p2,
- unsigned long *p3, unsigned long *p4, unsigned long *p5)
-{
- unsigned long lines = bytes >> 8;
- char xmm_save[16*4] ALIGN16;
- int cr0;
-
- XMMS_SAVE;
-
- /* need to save p4/p5 manually to not exceed gcc's 10 argument limit */
- __asm__ __volatile__ (
- " pushl %4\n"
- " pushl %5\n"
-#undef BLOCK
-#define BLOCK(i) \
- PF1(i) \
- PF1(i+2) \
- LD(i,0) \
- LD(i+1,1) \
- LD(i+2,2) \
- LD(i+3,3) \
- PF2(i) \
- PF2(i+2) \
- XO1(i,0) \
- XO1(i+1,1) \
- XO1(i+2,2) \
- XO1(i+3,3) \
- PF3(i) \
- PF3(i+2) \
- XO2(i,0) \
- XO2(i+1,1) \
- XO2(i+2,2) \
- XO2(i+3,3) \
- PF4(i) \
- PF4(i+2) \
- PF0(i+4) \
- PF0(i+6) \
- XO3(i,0) \
- XO3(i+1,1) \
- XO3(i+2,2) \
- XO3(i+3,3) \
- XO4(i,0) \
- XO4(i+1,1) \
- XO4(i+2,2) \
- XO4(i+3,3) \
- ST(i,0) \
- ST(i+1,1) \
- ST(i+2,2) \
- ST(i+3,3) \
-
-
- PF0(0)
- PF0(2)
-
- " .align 32 ;\n"
- " 1: ;\n"
-
- BLOCK(0)
- BLOCK(4)
- BLOCK(8)
- BLOCK(12)
-
- " addl $256, %1 ;\n"
- " addl $256, %2 ;\n"
- " addl $256, %3 ;\n"
- " addl $256, %4 ;\n"
- " addl $256, %5 ;\n"
- " decl %0 ;\n"
- " jnz 1b ;\n"
- " popl %5\n"
- " popl %4\n"
- : "+r" (lines),
- "+r" (p1), "+r" (p2), "+r" (p3)
- : "r" (p4), "r" (p5)
- : "memory");
-
- XMMS_RESTORE;
-}
-
-static struct xor_block_template xor_block_pIII_sse = {
- name: "pIII_sse",
- do_2: xor_sse_2,
- do_3: xor_sse_3,
- do_4: xor_sse_4,
- do_5: xor_sse_5,
-};
-
-/* Also try the generic routines. */
-#include <asm-generic/xor.h>
-
-#undef XOR_TRY_TEMPLATES
-#define XOR_TRY_TEMPLATES \
- do { \
- xor_speed(&xor_block_8regs); \
- xor_speed(&xor_block_32regs); \
- if (cpu_has_xmm) \
- xor_speed(&xor_block_pIII_sse); \
- if (md_cpu_has_mmx()) { \
- xor_speed(&xor_block_pII_mmx); \
- xor_speed(&xor_block_p5_mmx); \
- } \
- } while (0)
-
-/* We force the use of the SSE xor block because it can write around L2.
- We may also be able to load into the L1 only depending on how the cpu
- deals with a load to a line that is being prefetched. */
-#define XOR_SELECT_TEMPLATE(FASTEST) \
- (cpu_has_xmm ? &xor_block_pIII_sse : FASTEST)
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.4.30-xen-sparse/include/linux/blk.h
--- a/linux-2.4.30-xen-sparse/include/linux/blk.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,409 +0,0 @@
-#ifndef _BLK_H
-#define _BLK_H
-
-#include <linux/blkdev.h>
-#include <linux/locks.h>
-#include <linux/config.h>
-#include <linux/spinlock.h>
-
-/*
- * Spinlock for protecting the request queue which
- * is mucked around with in interrupts on potentially
- * multiple CPU's..
- */
-extern spinlock_t io_request_lock;
-
-/*
- * Initialization functions.
- */
-extern int isp16_init(void);
-extern int cdu31a_init(void);
-extern int acsi_init(void);
-extern int mcd_init(void);
-extern int mcdx_init(void);
-extern int sbpcd_init(void);
-extern int aztcd_init(void);
-extern int sony535_init(void);
-extern int gscd_init(void);
-extern int cm206_init(void);
-extern int optcd_init(void);
-extern int sjcd_init(void);
-extern int cdi_init(void);
-extern int hd_init(void);
-extern int ide_init(void);
-extern int xd_init(void);
-extern int mfm_init(void);
-extern int loop_init(void);
-extern int md_init(void);
-extern int ap_init(void);
-extern int ddv_init(void);
-extern int z2_init(void);
-extern int swim3_init(void);
-extern int swimiop_init(void);
-extern int amiga_floppy_init(void);
-extern int atari_floppy_init(void);
-extern int ez_init(void);
-extern int bpcd_init(void);
-extern int ps2esdi_init(void);
-extern int jsfd_init(void);
-extern int viodasd_init(void);
-extern int viocd_init(void);
-
-#if defined(CONFIG_ARCH_S390)
-extern int dasd_init(void);
-extern int xpram_init(void);
-extern int tapeblock_init(void);
-#endif /* CONFIG_ARCH_S390 */
-
-#if defined(CONFIG_XEN)
-extern int xlblk_init(void);
-#endif /* CONFIG_XEN */
-
-extern void set_device_ro(kdev_t dev,int flag);
-void add_blkdev_randomness(int major);
-
-extern int floppy_init(void);
-extern int rd_doload; /* 1 = load ramdisk, 0 = don't load */
-extern int rd_prompt; /* 1 = prompt for ramdisk, 0 = don't prompt */
-extern int rd_image_start; /* starting block # of image */
-
-#ifdef CONFIG_BLK_DEV_INITRD
-
-#define INITRD_MINOR 250 /* shouldn't collide with /dev/ram* too soon ... */
-
-extern unsigned long initrd_start,initrd_end;
-extern int initrd_below_start_ok; /* 1 if it is not an error if initrd_start <
memory_start */
-void initrd_init(void);
-
-#endif
-
-
-/*
- * end_request() and friends. Must be called with the request queue spinlock
- * acquired. All functions called within end_request() _must_be_ atomic.
- *
- * Several drivers define their own end_request and call
- * end_that_request_first() and end_that_request_last()
- * for parts of the original function. This prevents
- * code duplication in drivers.
- */
-
-static inline void blkdev_dequeue_request(struct request * req)
-{
- list_del(&req->queue);
-}
-
-int end_that_request_first(struct request *req, int uptodate, char *name);
-void end_that_request_last(struct request *req);
-
-#if defined(MAJOR_NR) || defined(IDE_DRIVER)
-
-#undef DEVICE_ON
-#undef DEVICE_OFF
-
-/*
- * Add entries as needed.
- */
-
-#ifdef IDE_DRIVER
-
-#define DEVICE_NR(device) (MINOR(device) >> PARTN_BITS)
-#define DEVICE_NAME "ide"
-
-#elif (MAJOR_NR == RAMDISK_MAJOR)
-
-/* ram disk */
-#define DEVICE_NAME "ramdisk"
-#define DEVICE_NR(device) (MINOR(device))
-#define DEVICE_NO_RANDOM
-
-#elif (MAJOR_NR == Z2RAM_MAJOR)
-
-/* Zorro II Ram */
-#define DEVICE_NAME "Z2RAM"
-#define DEVICE_REQUEST do_z2_request
-#define DEVICE_NR(device) (MINOR(device))
-
-#elif (MAJOR_NR == FLOPPY_MAJOR)
-
-static void floppy_off(unsigned int nr);
-
-#define DEVICE_NAME "floppy"
-#define DEVICE_INTR do_floppy
-#define DEVICE_REQUEST do_fd_request
-#define DEVICE_NR(device) ( (MINOR(device) & 3) | ((MINOR(device) & 0x80 ) >>
5 ))
-#define DEVICE_OFF(device) floppy_off(DEVICE_NR(device))
-
-#elif (MAJOR_NR == HD_MAJOR)
-
-/* Hard disk: timeout is 6 seconds. */
-#define DEVICE_NAME "hard disk"
-#define DEVICE_INTR do_hd
-#define TIMEOUT_VALUE (6*HZ)
-#define DEVICE_REQUEST do_hd_request
-#define DEVICE_NR(device) (MINOR(device)>>6)
-
-#elif (SCSI_DISK_MAJOR(MAJOR_NR))
-
-#define DEVICE_NAME "scsidisk"
-#define TIMEOUT_VALUE (2*HZ)
-#define DEVICE_NR(device) (((MAJOR(device) & SD_MAJOR_MASK) << (8 - 4)) +
(MINOR(device) >> 4))
-
-/* Kludge to use the same number for both char and block major numbers */
-#elif (MAJOR_NR == MD_MAJOR) && defined(MD_DRIVER)
-
-#define DEVICE_NAME "Multiple devices driver"
-#define DEVICE_REQUEST do_md_request
-#define DEVICE_NR(device) (MINOR(device))
-
-#elif (MAJOR_NR == SCSI_TAPE_MAJOR)
-
-#define DEVICE_NAME "scsitape"
-#define DEVICE_INTR do_st
-#define DEVICE_NR(device) (MINOR(device) & 0x7f)
-
-#elif (MAJOR_NR == OSST_MAJOR)
-
-#define DEVICE_NAME "onstream"
-#define DEVICE_INTR do_osst
-#define DEVICE_NR(device) (MINOR(device) & 0x7f)
-#define DEVICE_ON(device)
-#define DEVICE_OFF(device)
-
-#elif (MAJOR_NR == SCSI_CDROM_MAJOR)
-
-#define DEVICE_NAME "CD-ROM"
-#define DEVICE_NR(device) (MINOR(device))
-
-#elif (MAJOR_NR == XT_DISK_MAJOR)
-
-#define DEVICE_NAME "xt disk"
-#define DEVICE_REQUEST do_xd_request
-#define DEVICE_NR(device) (MINOR(device) >> 6)
-
-#elif (MAJOR_NR == PS2ESDI_MAJOR)
-
-#define DEVICE_NAME "PS/2 ESDI"
-#define DEVICE_REQUEST do_ps2esdi_request
-#define DEVICE_NR(device) (MINOR(device) >> 6)
-
-#elif (MAJOR_NR == CDU31A_CDROM_MAJOR)
-
-#define DEVICE_NAME "CDU31A"
-#define DEVICE_REQUEST do_cdu31a_request
-#define DEVICE_NR(device) (MINOR(device))
-
-#elif (MAJOR_NR == ACSI_MAJOR) && (defined(CONFIG_ATARI_ACSI) ||
defined(CONFIG_ATARI_ACSI_MODULE))
-
-#define DEVICE_NAME "ACSI"
-#define DEVICE_INTR do_acsi
-#define DEVICE_REQUEST do_acsi_request
-#define DEVICE_NR(device) (MINOR(device) >> 4)
-
-#elif (MAJOR_NR == MITSUMI_CDROM_MAJOR)
-
-#define DEVICE_NAME "Mitsumi CD-ROM"
-/* #define DEVICE_INTR do_mcd */
-#define DEVICE_REQUEST do_mcd_request
-#define DEVICE_NR(device) (MINOR(device))
-
-#elif (MAJOR_NR == MITSUMI_X_CDROM_MAJOR)
-
-#define DEVICE_NAME "Mitsumi CD-ROM"
-/* #define DEVICE_INTR do_mcdx */
-#define DEVICE_REQUEST do_mcdx_request
-#define DEVICE_NR(device) (MINOR(device))
-
-#elif (MAJOR_NR == MATSUSHITA_CDROM_MAJOR)
-
-#define DEVICE_NAME "Matsushita CD-ROM controller #1"
-#define DEVICE_REQUEST do_sbpcd_request
-#define DEVICE_NR(device) (MINOR(device))
-
-#elif (MAJOR_NR == MATSUSHITA_CDROM2_MAJOR)
-
-#define DEVICE_NAME "Matsushita CD-ROM controller #2"
-#define DEVICE_REQUEST do_sbpcd2_request
-#define DEVICE_NR(device) (MINOR(device))
-
-#elif (MAJOR_NR == MATSUSHITA_CDROM3_MAJOR)
-
-#define DEVICE_NAME "Matsushita CD-ROM controller #3"
-#define DEVICE_REQUEST do_sbpcd3_request
-#define DEVICE_NR(device) (MINOR(device))
-
-#elif (MAJOR_NR == MATSUSHITA_CDROM4_MAJOR)
-
-#define DEVICE_NAME "Matsushita CD-ROM controller #4"
-#define DEVICE_REQUEST do_sbpcd4_request
-#define DEVICE_NR(device) (MINOR(device))
-
-#elif (MAJOR_NR == AZTECH_CDROM_MAJOR)
-
-#define DEVICE_NAME "Aztech CD-ROM"
-#define DEVICE_REQUEST do_aztcd_request
-#define DEVICE_NR(device) (MINOR(device))
-
-#elif (MAJOR_NR == CDU535_CDROM_MAJOR)
-
-#define DEVICE_NAME "SONY-CDU535"
-#define DEVICE_INTR do_cdu535
-#define DEVICE_REQUEST do_cdu535_request
-#define DEVICE_NR(device) (MINOR(device))
-
-#elif (MAJOR_NR == GOLDSTAR_CDROM_MAJOR)
-
-#define DEVICE_NAME "Goldstar R420"
-#define DEVICE_REQUEST do_gscd_request
-#define DEVICE_NR(device) (MINOR(device))
-
-#elif (MAJOR_NR == CM206_CDROM_MAJOR)
-#define DEVICE_NAME "Philips/LMS CD-ROM cm206"
-#define DEVICE_REQUEST do_cm206_request
-#define DEVICE_NR(device) (MINOR(device))
-
-#elif (MAJOR_NR == OPTICS_CDROM_MAJOR)
-
-#define DEVICE_NAME "DOLPHIN 8000AT CD-ROM"
-#define DEVICE_REQUEST do_optcd_request
-#define DEVICE_NR(device) (MINOR(device))
-
-#elif (MAJOR_NR == SANYO_CDROM_MAJOR)
-
-#define DEVICE_NAME "Sanyo H94A CD-ROM"
-#define DEVICE_REQUEST do_sjcd_request
-#define DEVICE_NR(device) (MINOR(device))
-
-#elif (MAJOR_NR == APBLOCK_MAJOR)
-
-#define DEVICE_NAME "apblock"
-#define DEVICE_REQUEST ap_request
-#define DEVICE_NR(device) (MINOR(device))
-
-#elif (MAJOR_NR == DDV_MAJOR)
-
-#define DEVICE_NAME "ddv"
-#define DEVICE_REQUEST ddv_request
-#define DEVICE_NR(device) (MINOR(device)>>PARTN_BITS)
-
-#elif (MAJOR_NR == MFM_ACORN_MAJOR)
-
-#define DEVICE_NAME "mfm disk"
-#define DEVICE_INTR do_mfm
-#define DEVICE_REQUEST do_mfm_request
-#define DEVICE_NR(device) (MINOR(device) >> 6)
-
-#elif (MAJOR_NR == NBD_MAJOR)
-
-#define DEVICE_NAME "nbd"
-#define DEVICE_REQUEST do_nbd_request
-#define DEVICE_NR(device) (MINOR(device))
-
-#elif (MAJOR_NR == MDISK_MAJOR)
-
-#define DEVICE_NAME "mdisk"
-#define DEVICE_REQUEST mdisk_request
-#define DEVICE_NR(device) (MINOR(device))
-
-#elif (MAJOR_NR == DASD_MAJOR)
-
-#define DEVICE_NAME "dasd"
-#define DEVICE_REQUEST do_dasd_request
-#define DEVICE_NR(device) (MINOR(device) >> PARTN_BITS)
-
-#elif (MAJOR_NR == I2O_MAJOR)
-
-#define DEVICE_NAME "I2O block"
-#define DEVICE_REQUEST i2ob_request
-#define DEVICE_NR(device) (MINOR(device)>>4)
-
-#elif (MAJOR_NR == COMPAQ_SMART2_MAJOR)
-
-#define DEVICE_NAME "ida"
-#define TIMEOUT_VALUE (25*HZ)
-#define DEVICE_REQUEST do_ida_request
-#define DEVICE_NR(device) (MINOR(device) >> 4)
-
-#endif /* MAJOR_NR == whatever */
-
-/* provide DEVICE_xxx defaults, if not explicitly defined
- * above in the MAJOR_NR==xxx if-elif tree */
-#ifndef DEVICE_ON
-#define DEVICE_ON(device) do {} while (0)
-#endif
-#ifndef DEVICE_OFF
-#define DEVICE_OFF(device) do {} while (0)
-#endif
-
-#if (MAJOR_NR != SCSI_TAPE_MAJOR) && (MAJOR_NR != OSST_MAJOR)
-#if !defined(IDE_DRIVER)
-
-#ifndef CURRENT
-#define CURRENT
blkdev_entry_next_request(&blk_dev[MAJOR_NR].request_queue.queue_head)
-#endif
-#ifndef QUEUE_EMPTY
-#define QUEUE_EMPTY list_empty(&blk_dev[MAJOR_NR].request_queue.queue_head)
-#endif
-
-#ifndef DEVICE_NAME
-#define DEVICE_NAME "unknown"
-#endif
-
-#define CURRENT_DEV DEVICE_NR(CURRENT->rq_dev)
-
-#ifdef DEVICE_INTR
-static void (*DEVICE_INTR)(void) = NULL;
-#endif
-
-#define SET_INTR(x) (DEVICE_INTR = (x))
-
-#ifdef DEVICE_REQUEST
-static void (DEVICE_REQUEST)(request_queue_t *);
-#endif
-
-#ifdef DEVICE_INTR
-#define CLEAR_INTR SET_INTR(NULL)
-#else
-#define CLEAR_INTR
-#endif
-
-#define INIT_REQUEST \
- if (QUEUE_EMPTY) {\
- CLEAR_INTR; \
- return; \
- } \
- if (MAJOR(CURRENT->rq_dev) != MAJOR_NR) \
- panic(DEVICE_NAME ": request list destroyed"); \
- if (CURRENT->bh) { \
- if (!buffer_locked(CURRENT->bh)) \
- panic(DEVICE_NAME ": block not locked"); \
- }
-
-#endif /* !defined(IDE_DRIVER) */
-
-
-#ifndef LOCAL_END_REQUEST /* If we have our own end_request, we do not
want to include this mess */
-
-#if ! SCSI_BLK_MAJOR(MAJOR_NR) && (MAJOR_NR != COMPAQ_SMART2_MAJOR)
-
-static inline void end_request(int uptodate) {
- struct request *req = CURRENT;
-
- if (end_that_request_first(req, uptodate, DEVICE_NAME))
- return;
-
-#ifndef DEVICE_NO_RANDOM
- add_blkdev_randomness(MAJOR(req->rq_dev));
-#endif
- DEVICE_OFF(req->rq_dev);
- blkdev_dequeue_request(req);
- end_that_request_last(req);
-}
-
-#endif /* ! SCSI_BLK_MAJOR(MAJOR_NR) */
-#endif /* LOCAL_END_REQUEST */
-
-#endif /* (MAJOR_NR != SCSI_TAPE_MAJOR) */
-#endif /* defined(MAJOR_NR) || defined(IDE_DRIVER) */
-
-#endif /* _BLK_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/linux/highmem.h
--- a/linux-2.4.30-xen-sparse/include/linux/highmem.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,137 +0,0 @@
-#ifndef _LINUX_HIGHMEM_H
-#define _LINUX_HIGHMEM_H
-
-#include <linux/config.h>
-#include <asm/pgalloc.h>
-
-#ifdef CONFIG_HIGHMEM
-
-extern struct page *highmem_start_page;
-
-#include <asm/highmem.h>
-
-/* declarations for linux/mm/highmem.c */
-unsigned int nr_free_highpages(void);
-void kmap_flush_unused(void);
-
-extern struct buffer_head *create_bounce(int rw, struct buffer_head * bh_orig);
-
-static inline char *bh_kmap(struct buffer_head *bh)
-{
- return kmap(bh->b_page) + bh_offset(bh);
-}
-
-static inline void bh_kunmap(struct buffer_head *bh)
-{
- kunmap(bh->b_page);
-}
-
-/*
- * remember to add offset! and never ever reenable interrupts between a
- * bh_kmap_irq and bh_kunmap_irq!!
- */
-static inline char *bh_kmap_irq(struct buffer_head *bh, unsigned long *flags)
-{
- unsigned long addr;
-
- __save_flags(*flags);
-
- /*
- * could be low
- */
- if (!PageHighMem(bh->b_page))
- return bh->b_data;
-
- /*
- * it's a highmem page
- */
- __cli();
- addr = (unsigned long) kmap_atomic(bh->b_page, KM_BH_IRQ);
-
- if (addr & ~PAGE_MASK)
- BUG();
-
- return (char *) addr + bh_offset(bh);
-}
-
-static inline void bh_kunmap_irq(char *buffer, unsigned long *flags)
-{
- unsigned long ptr = (unsigned long) buffer & PAGE_MASK;
-
- kunmap_atomic((void *) ptr, KM_BH_IRQ);
- __restore_flags(*flags);
-}
-
-#else /* CONFIG_HIGHMEM */
-
-static inline unsigned int nr_free_highpages(void) { return 0; }
-static inline void kmap_flush_unused(void) { }
-
-static inline void *kmap(struct page *page) { return page_address(page); }
-
-#define kunmap(page) do { } while (0)
-
-#define kmap_atomic(page,idx) kmap(page)
-#define kunmap_atomic(page,idx) kunmap(page)
-
-#define bh_kmap(bh) ((bh)->b_data)
-#define bh_kunmap(bh) do { } while (0)
-#define kmap_nonblock(page) kmap(page)
-#define bh_kmap_irq(bh, flags) ((bh)->b_data)
-#define bh_kunmap_irq(bh, flags) do { *(flags) = 0; } while (0)
-
-#endif /* CONFIG_HIGHMEM */
-
-/* when CONFIG_HIGHMEM is not set these will be plain clear/copy_page */
-static inline void clear_user_highpage(struct page *page, unsigned long vaddr)
-{
- void *addr = kmap_atomic(page, KM_USER0);
- clear_user_page(addr, vaddr);
- kunmap_atomic(addr, KM_USER0);
-}
-
-static inline void clear_highpage(struct page *page)
-{
- clear_page(kmap(page));
- kunmap(page);
-}
-
-/*
- * Same but also flushes aliased cache contents to RAM.
- */
-static inline void memclear_highpage_flush(struct page *page, unsigned int
offset, unsigned int size)
-{
- char *kaddr;
-
- if (offset + size > PAGE_SIZE)
- out_of_line_bug();
- kaddr = kmap(page);
- memset(kaddr + offset, 0, size);
- flush_dcache_page(page);
- flush_page_to_ram(page);
- kunmap(page);
-}
-
-static inline void copy_user_highpage(struct page *to, struct page *from,
unsigned long vaddr)
-{
- char *vfrom, *vto;
-
- vfrom = kmap_atomic(from, KM_USER0);
- vto = kmap_atomic(to, KM_USER1);
- copy_user_page(vto, vfrom, vaddr);
- kunmap_atomic(vfrom, KM_USER0);
- kunmap_atomic(vto, KM_USER1);
-}
-
-static inline void copy_highpage(struct page *to, struct page *from)
-{
- char *vfrom, *vto;
-
- vfrom = kmap_atomic(from, KM_USER0);
- vto = kmap_atomic(to, KM_USER1);
- copy_page(vto, vfrom);
- kunmap_atomic(vfrom, KM_USER0);
- kunmap_atomic(vto, KM_USER1);
-}
-
-#endif /* _LINUX_HIGHMEM_H */
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.4.30-xen-sparse/include/linux/irq.h
--- a/linux-2.4.30-xen-sparse/include/linux/irq.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,80 +0,0 @@
-#ifndef __irq_h
-#define __irq_h
-
-/*
- * Please do not include this file in generic code. There is currently
- * no requirement for any architecture to implement anything held
- * within this file.
- *
- * Thanks. --rmk
- */
-
-#include <linux/config.h>
-
-#if !defined(CONFIG_ARCH_S390)
-
-#include <linux/cache.h>
-#include <linux/spinlock.h>
-
-#include <asm/irq.h>
-#include <asm/ptrace.h>
-
-/*
- * IRQ line status.
- */
-#define IRQ_INPROGRESS 1 /* IRQ handler active - do not enter! */
-#define IRQ_DISABLED 2 /* IRQ disabled - do not enter! */
-#define IRQ_PENDING 4 /* IRQ pending - replay on enable */
-#define IRQ_REPLAY 8 /* IRQ has been replayed but not acked yet */
-#define IRQ_AUTODETECT 16 /* IRQ is being autodetected */
-#define IRQ_WAITING 32 /* IRQ not yet seen - for autodetection */
-#define IRQ_LEVEL 64 /* IRQ level triggered */
-#define IRQ_MASKED 128 /* IRQ masked - shouldn't be seen again */
-#define IRQ_PER_CPU 256 /* IRQ is per CPU */
-
-/*
- * Interrupt controller descriptor. This is all we need
- * to describe about the low-level hardware.
- */
-struct hw_interrupt_type {
- const char * typename;
- unsigned int (*startup)(unsigned int irq);
- void (*shutdown)(unsigned int irq);
- void (*enable)(unsigned int irq);
- void (*disable)(unsigned int irq);
- void (*ack)(unsigned int irq);
- void (*end)(unsigned int irq);
- void (*set_affinity)(unsigned int irq, unsigned long mask);
-};
-
-typedef struct hw_interrupt_type hw_irq_controller;
-
-/*
- * This is the "IRQ descriptor", which contains various information
- * about the irq, including what kind of hardware handling it has,
- * whether it is disabled etc etc.
- *
- * Pad this out to 32 bytes for cache and indexing reasons.
- */
-typedef struct {
- unsigned int status; /* IRQ status */
- hw_irq_controller *handler;
- struct irqaction *action; /* IRQ action list */
- unsigned int depth; /* nested irq disables */
- spinlock_t lock;
-} ____cacheline_aligned irq_desc_t;
-
-extern irq_desc_t irq_desc [NR_IRQS];
-
-#include <asm/hw_irq.h> /* the arch dependent stuff */
-
-extern int handle_IRQ_event(unsigned int, struct pt_regs *, struct irqaction
*);
-extern int setup_irq(unsigned int , struct irqaction * );
-extern int teardown_irq(unsigned int , struct irqaction * );
-
-extern hw_irq_controller no_irq_type; /* needed in every arch ? */
-extern void no_action(int cpl, void *dev_id, struct pt_regs *regs);
-
-#endif
-
-#endif /* __irq_h */
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.4.30-xen-sparse/include/linux/mm.h
--- a/linux-2.4.30-xen-sparse/include/linux/mm.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,727 +0,0 @@
-#ifndef _LINUX_MM_H
-#define _LINUX_MM_H
-
-#include <linux/sched.h>
-#include <linux/errno.h>
-
-#ifdef __KERNEL__
-
-#include <linux/config.h>
-#include <linux/string.h>
-#include <linux/list.h>
-#include <linux/mmzone.h>
-#include <linux/swap.h>
-#include <linux/rbtree.h>
-
-extern unsigned long max_mapnr;
-extern unsigned long num_physpages;
-extern unsigned long num_mappedpages;
-extern void * high_memory;
-extern int page_cluster;
-/* The inactive_clean lists are per zone. */
-extern struct list_head active_list;
-extern struct list_head inactive_list;
-
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/atomic.h>
-
-/*
- * Linux kernel virtual memory manager primitives.
- * The idea being to have a "virtual" mm in the same way
- * we have a virtual fs - giving a cleaner interface to the
- * mm details, and allowing different kinds of memory mappings
- * (from shared memory to executable loading to arbitrary
- * mmap() functions).
- */
-
-/*
- * This struct defines a memory VMM memory area. There is one of these
- * per VM-area/task. A VM area is any part of the process virtual memory
- * space that has a special rule for the page-fault handlers (ie a shared
- * library, the executable area etc).
- */
-struct vm_area_struct {
- struct mm_struct * vm_mm; /* The address space we belong to. */
- unsigned long vm_start; /* Our start address within vm_mm. */
- unsigned long vm_end; /* The first byte after our end address
- within vm_mm. */
-
- /* linked list of VM areas per task, sorted by address */
- struct vm_area_struct *vm_next;
-
- pgprot_t vm_page_prot; /* Access permissions of this VMA. */
- unsigned long vm_flags; /* Flags, listed below. */
-
- rb_node_t vm_rb;
-
- /*
- * For areas with an address space and backing store,
- * one of the address_space->i_mmap{,shared} lists,
- * for shm areas, the list of attaches, otherwise unused.
- */
- struct vm_area_struct *vm_next_share;
- struct vm_area_struct **vm_pprev_share;
-
- /* Function pointers to deal with this struct. */
- struct vm_operations_struct * vm_ops;
-
- /* Information about our backing store: */
- unsigned long vm_pgoff; /* Offset (within vm_file) in PAGE_SIZE
- units, *not* PAGE_CACHE_SIZE */
- struct file * vm_file; /* File we map to (can be NULL). */
- unsigned long vm_raend; /* XXX: put full readahead info here. */
- void * vm_private_data; /* was vm_pte (shared mem) */
-};
-
-/*
- * vm_flags..
- */
-#define VM_READ 0x00000001 /* currently active flags */
-#define VM_WRITE 0x00000002
-#define VM_EXEC 0x00000004
-#define VM_SHARED 0x00000008
-
-#define VM_MAYREAD 0x00000010 /* limits for mprotect() etc */
-#define VM_MAYWRITE 0x00000020
-#define VM_MAYEXEC 0x00000040
-#define VM_MAYSHARE 0x00000080
-
-#define VM_GROWSDOWN 0x00000100 /* general info on the segment */
-#define VM_GROWSUP 0x00000200
-#define VM_SHM 0x00000400 /* shared memory area, don't swap out */
-#define VM_DENYWRITE 0x00000800 /* ETXTBSY on write attempts.. */
-
-#define VM_EXECUTABLE 0x00001000
-#define VM_LOCKED 0x00002000
-#define VM_IO 0x00004000 /* Memory mapped I/O or similar */
-
- /* Used by sys_madvise() */
-#define VM_SEQ_READ 0x00008000 /* App will access data sequentially */
-#define VM_RAND_READ 0x00010000 /* App will not benefit from clustered
reads */
-
-#define VM_DONTCOPY 0x00020000 /* Do not copy this vma on fork */
-#define VM_DONTEXPAND 0x00040000 /* Cannot expand with mremap() */
-#define VM_RESERVED 0x00080000 /* Don't unmap it from swap_out */
-
-#ifndef VM_STACK_FLAGS
-#define VM_STACK_FLAGS 0x00000177
-#endif
-
-#define VM_READHINTMASK (VM_SEQ_READ | VM_RAND_READ)
-#define VM_ClearReadHint(v) (v)->vm_flags &= ~VM_READHINTMASK
-#define VM_NormalReadHint(v) (!((v)->vm_flags & VM_READHINTMASK))
-#define VM_SequentialReadHint(v) ((v)->vm_flags & VM_SEQ_READ)
-#define VM_RandomReadHint(v) ((v)->vm_flags & VM_RAND_READ)
-
-/* read ahead limits */
-extern int vm_min_readahead;
-extern int vm_max_readahead;
-
-/*
- * mapping from the currently active vm_flags protection bits (the
- * low four bits) to a page protection mask..
- */
-extern pgprot_t protection_map[16];
-
-
-/*
- * These are the virtual MM functions - opening of an area, closing and
- * unmapping it (needed to keep files on disk up-to-date etc), pointer
- * to the functions called when a no-page or a wp-page exception occurs.
- */
-struct vm_operations_struct {
- void (*open)(struct vm_area_struct * area);
- void (*close)(struct vm_area_struct * area);
- struct page * (*nopage)(struct vm_area_struct * area, unsigned long
address, int unused);
-};
-
-/*
- * Each physical page in the system has a struct page associated with
- * it to keep track of whatever it is we are using the page for at the
- * moment. Note that we have no way to track which tasks are using
- * a page.
- *
- * Try to keep the most commonly accessed fields in single cache lines
- * here (16 bytes or greater). This ordering should be particularly
- * beneficial on 32-bit processors.
- *
- * The first line is data used in page cache lookup, the second line
- * is used for linear searches (eg. clock algorithm scans).
- *
- * TODO: make this structure smaller, it could be as small as 32 bytes.
- */
-typedef struct page {
- struct list_head list; /* ->mapping has some page lists. */
- struct address_space *mapping; /* The inode (or ...) we belong to. */
- unsigned long index; /* Our offset within mapping. */
- struct page *next_hash; /* Next page sharing our hash bucket in
- the pagecache hash table. */
- atomic_t count; /* Usage count, see below. */
- unsigned long flags; /* atomic flags, some possibly
- updated asynchronously */
- struct list_head lru; /* Pageout list, eg. active_list;
- protected by pagemap_lru_lock !! */
- struct page **pprev_hash; /* Complement to *next_hash. */
- struct buffer_head * buffers; /* Buffer maps us to a disk block. */
-
- /*
- * On machines where all RAM is mapped into kernel address space,
- * we can simply calculate the virtual address. On machines with
- * highmem some memory is mapped into kernel virtual memory
- * dynamically, so we need a place to store that address.
- * Note that this field could be 16 bits on x86 ... ;)
- *
- * Architectures with slow multiplication can define
- * WANT_PAGE_VIRTUAL in asm/page.h
- */
-#if defined(CONFIG_HIGHMEM) || defined(WANT_PAGE_VIRTUAL)
- void *virtual; /* Kernel virtual address (NULL if
- not kmapped, ie. highmem) */
-#endif /* CONFIG_HIGMEM || WANT_PAGE_VIRTUAL */
-} mem_map_t;
-
-/*
- * Methods to modify the page usage count.
- *
- * What counts for a page usage:
- * - cache mapping (page->mapping)
- * - disk mapping (page->buffers)
- * - page mapped in a task's page tables, each mapping
- * is counted separately
- *
- * Also, many kernel routines increase the page count before a critical
- * routine so they can be sure the page doesn't go away from under them.
- */
-#define get_page(p) atomic_inc(&(p)->count)
-#define put_page(p) __free_page(p)
-#define put_page_testzero(p) atomic_dec_and_test(&(p)->count)
-#define page_count(p) atomic_read(&(p)->count)
-#define set_page_count(p,v) atomic_set(&(p)->count, v)
-
-static inline struct page *nth_page(struct page *page, int n)
-{
- return page + n;
-}
-
-/*
- * Various page->flags bits:
- *
- * PG_reserved is set for special pages, which can never be swapped
- * out. Some of them might not even exist (eg empty_bad_page)...
- *
- * Multiple processes may "see" the same page. E.g. for untouched
- * mappings of /dev/null, all processes see the same page full of
- * zeroes, and text pages of executables and shared libraries have
- * only one copy in memory, at most, normally.
- *
- * For the non-reserved pages, page->count denotes a reference count.
- * page->count == 0 means the page is free.
- * page->count == 1 means the page is used for exactly one purpose
- * (e.g. a private data page of one process).
- *
- * A page may be used for kmalloc() or anyone else who does a
- * __get_free_page(). In this case the page->count is at least 1, and
- * all other fields are unused but should be 0 or NULL. The
- * management of this page is the responsibility of the one who uses
- * it.
- *
- * The other pages (we may call them "process pages") are completely
- * managed by the Linux memory manager: I/O, buffers, swapping etc.
- * The following discussion applies only to them.
- *
- * A page may belong to an inode's memory mapping. In this case,
- * page->mapping is the pointer to the inode, and page->index is the
- * file offset of the page, in units of PAGE_CACHE_SIZE.
- *
- * A page may have buffers allocated to it. In this case,
- * page->buffers is a circular list of these buffer heads. Else,
- * page->buffers == NULL.
- *
- * For pages belonging to inodes, the page->count is the number of
- * attaches, plus 1 if buffers are allocated to the page, plus one
- * for the page cache itself.
- *
- * All pages belonging to an inode are in these doubly linked lists:
- * mapping->clean_pages, mapping->dirty_pages and mapping->locked_pages;
- * using the page->list list_head. These fields are also used for
- * freelist managemet (when page->count==0).
- *
- * There is also a hash table mapping (mapping,index) to the page
- * in memory if present. The lists for this hash table use the fields
- * page->next_hash and page->pprev_hash.
- *
- * All process pages can do I/O:
- * - inode pages may need to be read from disk,
- * - inode pages which have been modified and are MAP_SHARED may need
- * to be written to disk,
- * - private pages which have been modified may need to be swapped out
- * to swap space and (later) to be read back into memory.
- * During disk I/O, PG_locked is used. This bit is set before I/O
- * and reset when I/O completes. page_waitqueue(page) is a wait queue of all
- * tasks waiting for the I/O on this page to complete.
- * PG_uptodate tells whether the page's contents is valid.
- * When a read completes, the page becomes uptodate, unless a disk I/O
- * error happened.
- *
- * For choosing which pages to swap out, inode pages carry a
- * PG_referenced bit, which is set any time the system accesses
- * that page through the (mapping,index) hash table. This referenced
- * bit, together with the referenced bit in the page tables, is used
- * to manipulate page->age and move the page across the active,
- * inactive_dirty and inactive_clean lists.
- *
- * Note that the referenced bit, the page->lru list_head and the
- * active, inactive_dirty and inactive_clean lists are protected by
- * the pagemap_lru_lock, and *NOT* by the usual PG_locked bit!
- *
- * PG_skip is used on sparc/sparc64 architectures to "skip" certain
- * parts of the address space.
- *
- * PG_error is set to indicate that an I/O error occurred on this page.
- *
- * PG_arch_1 is an architecture specific page state bit. The generic
- * code guarantees that this bit is cleared for a page when it first
- * is entered into the page cache.
- *
- * PG_highmem pages are not permanently mapped into the kernel virtual
- * address space, they need to be kmapped separately for doing IO on
- * the pages. The struct page (these bits with information) are always
- * mapped into kernel address space...
- */
-#define PG_locked 0 /* Page is locked. Don't touch. */
-#define PG_error 1
-#define PG_referenced 2
-#define PG_uptodate 3
-#define PG_dirty 4
-#define PG_unused 5
-#define PG_lru 6
-#define PG_active 7
-#define PG_slab 8
-#define PG_skip 10
-#define PG_highmem 11
-#define PG_checked 12 /* kill me in 2.5.<early>. */
-#define PG_arch_1 13
-#define PG_reserved 14
-#define PG_launder 15 /* written out by VM pressure.. */
-#define PG_fs_1 16 /* Filesystem specific */
-#define PG_foreign 21 /* Page belongs to foreign allocator */
-
-#ifndef arch_set_page_uptodate
-#define arch_set_page_uptodate(page)
-#endif
-
-/* Make it prettier to test the above... */
-#define UnlockPage(page) unlock_page(page)
-#define Page_Uptodate(page) test_bit(PG_uptodate, &(page)->flags)
-#ifndef SetPageUptodate
-#define SetPageUptodate(page) set_bit(PG_uptodate, &(page)->flags)
-#endif
-#define ClearPageUptodate(page) clear_bit(PG_uptodate, &(page)->flags)
-#define PageDirty(page) test_bit(PG_dirty, &(page)->flags)
-#define SetPageDirty(page) set_bit(PG_dirty, &(page)->flags)
-#define ClearPageDirty(page) clear_bit(PG_dirty, &(page)->flags)
-#define PageLocked(page) test_bit(PG_locked, &(page)->flags)
-#define LockPage(page) set_bit(PG_locked, &(page)->flags)
-#define TryLockPage(page) test_and_set_bit(PG_locked, &(page)->flags)
-#define PageChecked(page) test_bit(PG_checked, &(page)->flags)
-#define SetPageChecked(page) set_bit(PG_checked, &(page)->flags)
-#define ClearPageChecked(page) clear_bit(PG_checked, &(page)->flags)
-#define PageLaunder(page) test_bit(PG_launder, &(page)->flags)
-#define SetPageLaunder(page) set_bit(PG_launder, &(page)->flags)
-#define ClearPageLaunder(page) clear_bit(PG_launder, &(page)->flags)
-#define ClearPageArch1(page) clear_bit(PG_arch_1, &(page)->flags)
-
-/* A foreign page uses a custom destructor rather than the buddy allocator. */
-#ifdef CONFIG_FOREIGN_PAGES
-#define PageForeign(page) test_bit(PG_foreign, &(page)->flags)
-#define SetPageForeign(page, dtor) do { \
- set_bit(PG_foreign, &(page)->flags); \
- (page)->mapping = (void *)dtor; \
-} while (0)
-#define ClearPageForeign(page) do { \
- clear_bit(PG_foreign, &(page)->flags); \
- (page)->mapping = NULL; \
-} while (0)
-#define PageForeignDestructor(page) \
- ( (void (*) (struct page *)) (page)->mapping )
-#else
-#define PageForeign(page) 0
-#define PageForeignDestructor(page) void
-#endif
-
-/*
- * The zone field is never updated after free_area_init_core()
- * sets it, so none of the operations on it need to be atomic.
- */
-#define NODE_SHIFT 4
-#define ZONE_SHIFT (BITS_PER_LONG - 8)
-
-struct zone_struct;
-extern struct zone_struct *zone_table[];
-
-static inline zone_t *page_zone(struct page *page)
-{
- return zone_table[page->flags >> ZONE_SHIFT];
-}
-
-static inline void set_page_zone(struct page *page, unsigned long zone_num)
-{
- page->flags &= ~(~0UL << ZONE_SHIFT);
- page->flags |= zone_num << ZONE_SHIFT;
-}
-
-/*
- * In order to avoid #ifdefs within C code itself, we define
- * set_page_address to a noop for non-highmem machines, where
- * the field isn't useful.
- * The same is true for page_address() in arch-dependent code.
- */
-#if defined(CONFIG_HIGHMEM) || defined(WANT_PAGE_VIRTUAL)
-
-#define set_page_address(page, address) \
- do { \
- (page)->virtual = (address); \
- } while(0)
-
-#else /* CONFIG_HIGHMEM || WANT_PAGE_VIRTUAL */
-#define set_page_address(page, address) do { } while(0)
-#endif /* CONFIG_HIGHMEM || WANT_PAGE_VIRTUAL */
-
-/*
- * Permanent address of a page. Obviously must never be
- * called on a highmem page.
- */
-#if defined(CONFIG_HIGHMEM) || defined(WANT_PAGE_VIRTUAL)
-
-#define page_address(page) ((page)->virtual)
-
-#else /* CONFIG_HIGHMEM || WANT_PAGE_VIRTUAL */
-
-#define page_address(page) \
- __va( (((page) - page_zone(page)->zone_mem_map) << PAGE_SHIFT) \
- + page_zone(page)->zone_start_paddr)
-
-#endif /* CONFIG_HIGHMEM || WANT_PAGE_VIRTUAL */
-
-extern void FASTCALL(set_page_dirty(struct page *));
-
-/*
- * The first mb is necessary to safely close the critical section opened by the
- * TryLockPage(), the second mb is necessary to enforce ordering between
- * the clear_bit and the read of the waitqueue (to avoid SMP races with a
- * parallel wait_on_page).
- */
-#define PageError(page) test_bit(PG_error, &(page)->flags)
-#define SetPageError(page) set_bit(PG_error, &(page)->flags)
-#define ClearPageError(page) clear_bit(PG_error, &(page)->flags)
-#define PageReferenced(page) test_bit(PG_referenced, &(page)->flags)
-#define SetPageReferenced(page) set_bit(PG_referenced, &(page)->flags)
-#define ClearPageReferenced(page) clear_bit(PG_referenced, &(page)->flags)
-#define PageTestandClearReferenced(page)
test_and_clear_bit(PG_referenced, &(page)->flags)
-#define PageSlab(page) test_bit(PG_slab, &(page)->flags)
-#define PageSetSlab(page) set_bit(PG_slab, &(page)->flags)
-#define PageClearSlab(page) clear_bit(PG_slab, &(page)->flags)
-#define PageReserved(page) test_bit(PG_reserved, &(page)->flags)
-
-#define PageActive(page) test_bit(PG_active, &(page)->flags)
-#define SetPageActive(page) set_bit(PG_active, &(page)->flags)
-#define ClearPageActive(page) clear_bit(PG_active, &(page)->flags)
-
-#define PageLRU(page) test_bit(PG_lru, &(page)->flags)
-#define TestSetPageLRU(page) test_and_set_bit(PG_lru, &(page)->flags)
-#define TestClearPageLRU(page) test_and_clear_bit(PG_lru, &(page)->flags)
-
-#ifdef CONFIG_HIGHMEM
-#define PageHighMem(page) test_bit(PG_highmem, &(page)->flags)
-#else
-#define PageHighMem(page) 0 /* needed to optimize away at compile
time */
-#endif
-
-#define SetPageReserved(page) set_bit(PG_reserved, &(page)->flags)
-#define ClearPageReserved(page) clear_bit(PG_reserved,
&(page)->flags)
-
-/*
- * Error return values for the *_nopage functions
- */
-#define NOPAGE_SIGBUS (NULL)
-#define NOPAGE_OOM ((struct page *) (-1))
-
-/* The array of struct pages */
-extern mem_map_t * mem_map;
-
-/*
- * There is only one page-allocator function, and two main namespaces to
- * it. The alloc_page*() variants return 'struct page *' and as such
- * can allocate highmem pages, the *get*page*() variants return
- * virtual kernel addresses to the allocated page(s).
- */
-extern struct page * FASTCALL(_alloc_pages(unsigned int gfp_mask, unsigned int
order));
-extern struct page * FASTCALL(__alloc_pages(unsigned int gfp_mask, unsigned
int order, zonelist_t *zonelist));
-extern struct page * alloc_pages_node(int nid, unsigned int gfp_mask, unsigned
int order);
-
-static inline struct page * alloc_pages(unsigned int gfp_mask, unsigned int
order)
-{
- /*
- * Gets optimized away by the compiler.
- */
- if (order >= MAX_ORDER)
- return NULL;
- return _alloc_pages(gfp_mask, order);
-}
-
-#define alloc_page(gfp_mask) alloc_pages(gfp_mask, 0)
-
-extern unsigned long FASTCALL(__get_free_pages(unsigned int gfp_mask, unsigned
int order));
-extern unsigned long FASTCALL(get_zeroed_page(unsigned int gfp_mask));
-
-#define __get_free_page(gfp_mask) \
- __get_free_pages((gfp_mask),0)
-
-#define __get_dma_pages(gfp_mask, order) \
- __get_free_pages((gfp_mask) | GFP_DMA,(order))
-
-/*
- * The old interface name will be removed in 2.5:
- */
-#define get_free_page get_zeroed_page
-
-/*
- * There is only one 'core' page-freeing function.
- */
-extern void FASTCALL(__free_pages(struct page *page, unsigned int order));
-extern void FASTCALL(free_pages(unsigned long addr, unsigned int order));
-
-#define __free_page(page) __free_pages((page), 0)
-#define free_page(addr) free_pages((addr),0)
-
-extern void show_free_areas(void);
-extern void show_free_areas_node(pg_data_t *pgdat);
-
-extern void clear_page_tables(struct mm_struct *, unsigned long, int);
-
-extern int fail_writepage(struct page *);
-struct page * shmem_nopage(struct vm_area_struct * vma, unsigned long address,
int unused);
-struct file *shmem_file_setup(char * name, loff_t size);
-extern void shmem_lock(struct file * file, int lock);
-extern int shmem_zero_setup(struct vm_area_struct *);
-
-extern void zap_page_range(struct mm_struct *mm, unsigned long address,
unsigned long size);
-extern int copy_page_range(struct mm_struct *dst, struct mm_struct *src,
struct vm_area_struct *vma);
-extern int remap_page_range(unsigned long from, unsigned long to, unsigned
long size, pgprot_t prot);
-extern int zeromap_page_range(unsigned long from, unsigned long size, pgprot_t
prot);
-
-extern int vmtruncate(struct inode * inode, loff_t offset);
-extern pmd_t *FASTCALL(__pmd_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned
long address));
-extern pte_t *FASTCALL(pte_alloc(struct mm_struct *mm, pmd_t *pmd, unsigned
long address));
-extern int handle_mm_fault(struct mm_struct *mm,struct vm_area_struct *vma,
unsigned long address, int write_access);
-extern int make_pages_present(unsigned long addr, unsigned long end);
-extern int access_process_vm(struct task_struct *tsk, unsigned long addr, void
*buf, int len, int write);
-extern int ptrace_readdata(struct task_struct *tsk, unsigned long src, char
*dst, int len);
-extern int ptrace_writedata(struct task_struct *tsk, char * src, unsigned long
dst, int len);
-extern int ptrace_attach(struct task_struct *tsk);
-extern int ptrace_detach(struct task_struct *, unsigned int);
-extern void ptrace_disable(struct task_struct *);
-extern int ptrace_check_attach(struct task_struct *task, int kill);
-
-int get_user_pages(struct task_struct *tsk, struct mm_struct *mm, unsigned
long start,
- int len, int write, int force, struct page **pages, struct
vm_area_struct **vmas);
-
-/*
- * On a two-level page table, this ends up being trivial. Thus the
- * inlining and the symmetry break with pte_alloc() that does all
- * of this out-of-line.
- */
-static inline pmd_t *pmd_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long
address)
-{
- if (pgd_none(*pgd))
- return __pmd_alloc(mm, pgd, address);
- return pmd_offset(pgd, address);
-}
-
-extern int pgt_cache_water[2];
-extern int check_pgt_cache(void);
-
-extern void free_area_init(unsigned long * zones_size);
-extern void free_area_init_node(int nid, pg_data_t *pgdat, struct page *pmap,
- unsigned long * zones_size, unsigned long zone_start_paddr,
- unsigned long *zholes_size);
-extern void mem_init(void);
-extern void show_mem(void);
-extern void si_meminfo(struct sysinfo * val);
-extern void swapin_readahead(swp_entry_t);
-
-extern struct address_space swapper_space;
-#define PageSwapCache(page) ((page)->mapping == &swapper_space)
-
-static inline int is_page_cache_freeable(struct page * page)
-{
- return page_count(page) - !!page->buffers == 1;
-}
-
-extern int FASTCALL(can_share_swap_page(struct page *));
-extern int FASTCALL(remove_exclusive_swap_page(struct page *));
-
-extern void __free_pte(pte_t);
-
-/* mmap.c */
-extern void lock_vma_mappings(struct vm_area_struct *);
-extern void unlock_vma_mappings(struct vm_area_struct *);
-extern int insert_vm_struct(struct mm_struct *, struct vm_area_struct *);
-extern void __insert_vm_struct(struct mm_struct *, struct vm_area_struct *);
-extern void build_mmap_rb(struct mm_struct *);
-extern void exit_mmap(struct mm_struct *);
-
-extern unsigned long get_unmapped_area(struct file *, unsigned long, unsigned
long, unsigned long, unsigned long);
-
-extern unsigned long do_mmap_pgoff(struct file *file, unsigned long addr,
- unsigned long len, unsigned long prot,
- unsigned long flag, unsigned long pgoff);
-
-static inline unsigned long do_mmap(struct file *file, unsigned long addr,
- unsigned long len, unsigned long prot,
- unsigned long flag, unsigned long offset)
-{
- unsigned long ret = -EINVAL;
- if ((offset + PAGE_ALIGN(len)) < offset)
- goto out;
- if (!(offset & ~PAGE_MASK))
- ret = do_mmap_pgoff(file, addr, len, prot, flag, offset >>
PAGE_SHIFT);
-out:
- return ret;
-}
-
-extern int do_munmap(struct mm_struct *, unsigned long, size_t);
-
-extern unsigned long do_brk(unsigned long, unsigned long);
-
-static inline void __vma_unlink(struct mm_struct * mm, struct vm_area_struct *
vma, struct vm_area_struct * prev)
-{
- prev->vm_next = vma->vm_next;
- rb_erase(&vma->vm_rb, &mm->mm_rb);
- if (mm->mmap_cache == vma)
- mm->mmap_cache = prev;
-}
-
-static inline int can_vma_merge(struct vm_area_struct * vma, unsigned long
vm_flags)
-{
- if (!vma->vm_file && vma->vm_flags == vm_flags)
- return 1;
- else
- return 0;
-}
-
-struct zone_t;
-/* filemap.c */
-extern void remove_inode_page(struct page *);
-extern unsigned long page_unuse(struct page *);
-extern void truncate_inode_pages(struct address_space *, loff_t);
-
-/* generic vm_area_ops exported for stackable file systems */
-extern int filemap_sync(struct vm_area_struct *, unsigned long, size_t,
unsigned int);
-extern struct page *filemap_nopage(struct vm_area_struct *, unsigned long,
int);
-
-/*
- * GFP bitmasks..
- */
-/* Zone modifiers in GFP_ZONEMASK (see linux/mmzone.h - low four bits) */
-#define __GFP_DMA 0x01
-#define __GFP_HIGHMEM 0x02
-
-/* Action modifiers - doesn't change the zoning */
-#define __GFP_WAIT 0x10 /* Can wait and reschedule? */
-#define __GFP_HIGH 0x20 /* Should access emergency pools? */
-#define __GFP_IO 0x40 /* Can start low memory physical IO? */
-#define __GFP_HIGHIO 0x80 /* Can start high mem physical IO? */
-#define __GFP_FS 0x100 /* Can call down to low-level FS? */
-
-#define GFP_NOHIGHIO (__GFP_HIGH | __GFP_WAIT | __GFP_IO)
-#define GFP_NOIO (__GFP_HIGH | __GFP_WAIT)
-#define GFP_NOFS (__GFP_HIGH | __GFP_WAIT | __GFP_IO | __GFP_HIGHIO)
-#define GFP_ATOMIC (__GFP_HIGH)
-#define GFP_USER ( __GFP_WAIT | __GFP_IO | __GFP_HIGHIO |
__GFP_FS)
-#define GFP_HIGHUSER ( __GFP_WAIT | __GFP_IO | __GFP_HIGHIO |
__GFP_FS | __GFP_HIGHMEM)
-#define GFP_KERNEL (__GFP_HIGH | __GFP_WAIT | __GFP_IO | __GFP_HIGHIO |
__GFP_FS)
-#define GFP_NFS (__GFP_HIGH | __GFP_WAIT | __GFP_IO |
__GFP_HIGHIO | __GFP_FS)
-#define GFP_KSWAPD ( __GFP_WAIT | __GFP_IO | __GFP_HIGHIO |
__GFP_FS)
-
-/* Flag - indicates that the buffer will be suitable for DMA. Ignored on some
- platforms, used as appropriate on others */
-
-#define GFP_DMA __GFP_DMA
-
-static inline unsigned int pf_gfp_mask(unsigned int gfp_mask)
-{
- /* avoid all memory balancing I/O methods if this task cannot block on
I/O */
- if (current->flags & PF_NOIO)
- gfp_mask &= ~(__GFP_IO | __GFP_HIGHIO | __GFP_FS);
-
- return gfp_mask;
-}
-
-/* vma is the first one with address < vma->vm_end,
- * and even address < vma->vm_start. Have to extend vma. */
-static inline int expand_stack(struct vm_area_struct * vma, unsigned long
address)
-{
- unsigned long grow;
-
- /*
- * vma->vm_start/vm_end cannot change under us because the caller
- * is required to hold the mmap_sem in read mode. We need the
- * page_table_lock lock to serialize against concurrent expand_stacks.
- */
- address &= PAGE_MASK;
- spin_lock(&vma->vm_mm->page_table_lock);
-
- /* already expanded while we were spinning? */
- if (vma->vm_start <= address) {
- spin_unlock(&vma->vm_mm->page_table_lock);
- return 0;
- }
-
- grow = (vma->vm_start - address) >> PAGE_SHIFT;
- if (vma->vm_end - address > current->rlim[RLIMIT_STACK].rlim_cur ||
- ((vma->vm_mm->total_vm + grow) << PAGE_SHIFT) >
current->rlim[RLIMIT_AS].rlim_cur) {
- spin_unlock(&vma->vm_mm->page_table_lock);
- return -ENOMEM;
- }
-
- if ((vma->vm_flags & VM_LOCKED) &&
- ((vma->vm_mm->locked_vm + grow) << PAGE_SHIFT) >
current->rlim[RLIMIT_MEMLOCK].rlim_cur) {
- spin_unlock(&vma->vm_mm->page_table_lock);
- return -ENOMEM;
- }
-
-
- vma->vm_start = address;
- vma->vm_pgoff -= grow;
- vma->vm_mm->total_vm += grow;
- if (vma->vm_flags & VM_LOCKED)
- vma->vm_mm->locked_vm += grow;
- spin_unlock(&vma->vm_mm->page_table_lock);
- return 0;
-}
-
-/* Look up the first VMA which satisfies addr < vm_end, NULL if none. */
-extern struct vm_area_struct * find_vma(struct mm_struct * mm, unsigned long
addr);
-extern struct vm_area_struct * find_vma_prev(struct mm_struct * mm, unsigned
long addr,
- struct vm_area_struct **pprev);
-
-/* Look up the first VMA which intersects the interval start_addr..end_addr-1,
- NULL if none. Assume start_addr < end_addr. */
-static inline struct vm_area_struct * find_vma_intersection(struct mm_struct *
mm, unsigned long start_addr, unsigned long end_addr)
-{
- struct vm_area_struct * vma = find_vma(mm,start_addr);
-
- if (vma && end_addr <= vma->vm_start)
- vma = NULL;
- return vma;
-}
-
-extern struct vm_area_struct *find_extend_vma(struct mm_struct *mm, unsigned
long addr);
-
-extern struct page * vmalloc_to_page(void *addr);
-
-#endif /* __KERNEL__ */
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/linux/sched.h
--- a/linux-2.4.30-xen-sparse/include/linux/sched.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,971 +0,0 @@
-#ifndef _LINUX_SCHED_H
-#define _LINUX_SCHED_H
-
-#include <asm/param.h> /* for HZ */
-
-extern unsigned long event;
-
-#include <linux/config.h>
-#include <linux/binfmts.h>
-#include <linux/threads.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/times.h>
-#include <linux/timex.h>
-#include <linux/rbtree.h>
-
-#include <asm/system.h>
-#include <asm/semaphore.h>
-#include <asm/page.h>
-#include <asm/ptrace.h>
-#include <asm/mmu.h>
-
-#include <linux/smp.h>
-#include <linux/tty.h>
-#include <linux/sem.h>
-#include <linux/signal.h>
-#include <linux/securebits.h>
-#include <linux/fs_struct.h>
-
-struct exec_domain;
-
-/*
- * cloning flags:
- */
-#define CSIGNAL 0x000000ff /* signal mask to be sent at
exit */
-#define CLONE_VM 0x00000100 /* set if VM shared between processes */
-#define CLONE_FS 0x00000200 /* set if fs info shared between
processes */
-#define CLONE_FILES 0x00000400 /* set if open files shared between
processes */
-#define CLONE_SIGHAND 0x00000800 /* set if signal handlers and blocked
signals shared */
-#define CLONE_PID 0x00001000 /* set if pid shared */
-#define CLONE_PTRACE 0x00002000 /* set if we want to let tracing
continue on the child too */
-#define CLONE_VFORK 0x00004000 /* set if the parent wants the child to
wake it up on mm_release */
-#define CLONE_PARENT 0x00008000 /* set if we want to have the same
parent as the cloner */
-#define CLONE_THREAD 0x00010000 /* Same thread group? */
-#define CLONE_NEWNS 0x00020000 /* New namespace group? */
-
-#define CLONE_SIGNAL (CLONE_SIGHAND | CLONE_THREAD)
-
-/*
- * These are the constant used to fake the fixed-point load-average
- * counting. Some notes:
- * - 11 bit fractions expand to 22 bits by the multiplies: this gives
- * a load-average precision of 10 bits integer + 11 bits fractional
- * - if you want to count load-averages more often, you need more
- * precision, or rounding will get you. With 2-second counting freq,
- * the EXP_n values would be 1981, 2034 and 2043 if still using only
- * 11 bit fractions.
- */
-extern unsigned long avenrun[]; /* Load averages */
-
-#define FSHIFT 11 /* nr of bits of precision */
-#define FIXED_1 (1<<FSHIFT) /* 1.0 as fixed-point */
-#define LOAD_FREQ (5*HZ) /* 5 sec intervals */
-#define EXP_1 1884 /* 1/exp(5sec/1min) as fixed-point */
-#define EXP_5 2014 /* 1/exp(5sec/5min) */
-#define EXP_15 2037 /* 1/exp(5sec/15min) */
-
-#define CALC_LOAD(load,exp,n) \
- load *= exp; \
- load += n*(FIXED_1-exp); \
- load >>= FSHIFT;
-
-#define CT_TO_SECS(x) ((x) / HZ)
-#define CT_TO_USECS(x) (((x) % HZ) * 1000000/HZ)
-
-extern int nr_running, nr_threads;
-extern int last_pid;
-
-#include <linux/fs.h>
-#include <linux/time.h>
-#include <linux/param.h>
-#include <linux/resource.h>
-#ifdef __KERNEL__
-#include <linux/timer.h>
-#endif
-
-#include <asm/processor.h>
-
-#define TASK_RUNNING 0
-#define TASK_INTERRUPTIBLE 1
-#define TASK_UNINTERRUPTIBLE 2
-#define TASK_ZOMBIE 4
-#define TASK_STOPPED 8
-
-#define __set_task_state(tsk, state_value) \
- do { (tsk)->state = (state_value); } while (0)
-#define set_task_state(tsk, state_value) \
- set_mb((tsk)->state, (state_value))
-
-#define __set_current_state(state_value) \
- do { current->state = (state_value); } while (0)
-#define set_current_state(state_value) \
- set_mb(current->state, (state_value))
-
-/*
- * Scheduling policies
- */
-#define SCHED_OTHER 0
-#define SCHED_FIFO 1
-#define SCHED_RR 2
-
-/*
- * This is an additional bit set when we want to
- * yield the CPU for one re-schedule..
- */
-#define SCHED_YIELD 0x10
-
-struct sched_param {
- int sched_priority;
-};
-
-struct completion;
-
-#ifdef __KERNEL__
-
-#include <linux/spinlock.h>
-
-/*
- * This serializes "schedule()" and also protects
- * the run-queue from deletions/modifications (but
- * _adding_ to the beginning of the run-queue has
- * a separate lock).
- */
-extern rwlock_t tasklist_lock;
-extern spinlock_t runqueue_lock;
-extern spinlock_t mmlist_lock;
-
-extern void sched_init(void);
-extern void init_idle(void);
-extern void show_state(void);
-extern void cpu_init (void);
-extern void trap_init(void);
-extern void update_process_times(int user);
-#ifdef CONFIG_NO_IDLE_HZ
-extern void update_process_times_us(int user, int system);
-#endif
-extern void update_one_process(struct task_struct *p, unsigned long user,
- unsigned long system, int cpu);
-
-#define MAX_SCHEDULE_TIMEOUT LONG_MAX
-extern signed long FASTCALL(schedule_timeout(signed long timeout));
-asmlinkage void schedule(void);
-
-extern int schedule_task(struct tq_struct *task);
-extern void flush_scheduled_tasks(void);
-extern int start_context_thread(void);
-extern int current_is_keventd(void);
-
-#if CONFIG_SMP
-extern void set_cpus_allowed(struct task_struct *p, unsigned long new_mask);
-#else
-# define set_cpus_allowed(p, new_mask) do { } while (0)
-#endif
-
-/*
- * The default fd array needs to be at least BITS_PER_LONG,
- * as this is the granularity returned by copy_fdset().
- */
-#define NR_OPEN_DEFAULT BITS_PER_LONG
-
-struct namespace;
-/*
- * Open file table structure
- */
-struct files_struct {
- atomic_t count;
- rwlock_t file_lock; /* Protects all the below members. Nests
inside tsk->alloc_lock */
- int max_fds;
- int max_fdset;
- int next_fd;
- struct file ** fd; /* current fd array */
- fd_set *close_on_exec;
- fd_set *open_fds;
- fd_set close_on_exec_init;
- fd_set open_fds_init;
- struct file * fd_array[NR_OPEN_DEFAULT];
-};
-
-#define INIT_FILES \
-{ \
- count: ATOMIC_INIT(1), \
- file_lock: RW_LOCK_UNLOCKED, \
- max_fds: NR_OPEN_DEFAULT, \
- max_fdset: __FD_SETSIZE, \
- next_fd: 0, \
- fd: &init_files.fd_array[0], \
- close_on_exec: &init_files.close_on_exec_init, \
- open_fds: &init_files.open_fds_init, \
- close_on_exec_init: { { 0, } }, \
- open_fds_init: { { 0, } }, \
- fd_array: { NULL, } \
-}
-
-/* Maximum number of active map areas.. This is a random (large) number */
-#define DEFAULT_MAX_MAP_COUNT (65536)
-
-extern int max_map_count;
-
-struct mm_struct {
- struct vm_area_struct * mmap; /* list of VMAs */
- rb_root_t mm_rb;
- struct vm_area_struct * mmap_cache; /* last find_vma result */
- pgd_t * pgd;
- atomic_t mm_users; /* How many users with user
space? */
- atomic_t mm_count; /* How many references to
"struct mm_struct" (users count as 1) */
- int map_count; /* number of VMAs */
- struct rw_semaphore mmap_sem;
- spinlock_t page_table_lock; /* Protects task page tables
and mm->rss */
-
- struct list_head mmlist; /* List of all active mm's.
These are globally strung
- * together off init_mm.mmlist,
and are protected
- * by mmlist_lock
- */
-
- unsigned long start_code, end_code, start_data, end_data;
- unsigned long start_brk, brk, start_stack;
- unsigned long arg_start, arg_end, env_start, env_end;
- unsigned long rss, total_vm, locked_vm;
- unsigned long def_flags;
- unsigned long cpu_vm_mask;
- unsigned long swap_address;
-
- unsigned dumpable:1;
-
- /* Architecture-specific MM context */
- mm_context_t context;
-};
-
-extern int mmlist_nr;
-
-#define INIT_MM(name) \
-{ \
- mm_rb: RB_ROOT, \
- pgd: swapper_pg_dir, \
- mm_users: ATOMIC_INIT(2), \
- mm_count: ATOMIC_INIT(1), \
- mmap_sem: __RWSEM_INITIALIZER(name.mmap_sem), \
- page_table_lock: SPIN_LOCK_UNLOCKED, \
- mmlist: LIST_HEAD_INIT(name.mmlist), \
-}
-
-struct signal_struct {
- atomic_t count;
- struct k_sigaction action[_NSIG];
- spinlock_t siglock;
-};
-
-
-#define INIT_SIGNALS { \
- count: ATOMIC_INIT(1), \
- action: { {{0,}}, }, \
- siglock: SPIN_LOCK_UNLOCKED \
-}
-
-/*
- * Some day this will be a full-fledged user tracking system..
- */
-struct user_struct {
- atomic_t __count; /* reference count */
- atomic_t processes; /* How many processes does this user have? */
- atomic_t files; /* How many open files does this user have? */
-
- /* Hash table maintenance information */
- struct user_struct *next, **pprev;
- uid_t uid;
-};
-
-#define get_current_user() ({ \
- struct user_struct *__tmp_user = current->user; \
- atomic_inc(&__tmp_user->__count); \
- __tmp_user; })
-
-extern struct user_struct root_user;
-#define INIT_USER (&root_user)
-
-struct task_struct {
- /*
- * offsets of these are hardcoded elsewhere - touch with care
- */
- volatile long state; /* -1 unrunnable, 0 runnable, >0 stopped */
- unsigned long flags; /* per process flags, defined below */
- int sigpending;
- mm_segment_t addr_limit; /* thread address space:
- 0-0xBFFFFFFF for user-thead
- 0-0xFFFFFFFF for kernel-thread
- */
- struct exec_domain *exec_domain;
- volatile long need_resched;
- unsigned long ptrace;
-
- int lock_depth; /* Lock depth */
-
-/*
- * offset 32 begins here on 32-bit platforms. We keep
- * all fields in a single cacheline that are needed for
- * the goodness() loop in schedule().
- */
- long counter;
- long nice;
- unsigned long policy;
- struct mm_struct *mm;
- int processor;
- /*
- * cpus_runnable is ~0 if the process is not running on any
- * CPU. It's (1 << cpu) if it's running on a CPU. This mask
- * is updated under the runqueue lock.
- *
- * To determine whether a process might run on a CPU, this
- * mask is AND-ed with cpus_allowed.
- */
- unsigned long cpus_runnable, cpus_allowed;
- /*
- * (only the 'next' pointer fits into the cacheline, but
- * that's just fine.)
- */
- struct list_head run_list;
- unsigned long sleep_time;
-
- struct task_struct *next_task, *prev_task;
- struct mm_struct *active_mm;
- struct list_head local_pages;
- unsigned int allocation_order, nr_local_pages;
-
-/* task state */
- struct linux_binfmt *binfmt;
- int exit_code, exit_signal;
- int pdeath_signal; /* The signal sent when the parent dies */
- /* ??? */
- unsigned long personality;
- int did_exec:1;
- unsigned task_dumpable:1;
- pid_t pid;
- pid_t pgrp;
- pid_t tty_old_pgrp;
- pid_t session;
- pid_t tgid;
- /* boolean value for session group leader */
- int leader;
- /*
- * pointers to (original) parent process, youngest child, younger
sibling,
- * older sibling, respectively. (p->father can be replaced with
- * p->p_pptr->pid)
- */
- struct task_struct *p_opptr, *p_pptr, *p_cptr, *p_ysptr, *p_osptr;
- struct list_head thread_group;
-
- /* PID hash table linkage. */
- struct task_struct *pidhash_next;
- struct task_struct **pidhash_pprev;
-
- wait_queue_head_t wait_chldexit; /* for wait4() */
- struct completion *vfork_done; /* for vfork() */
- unsigned long rt_priority;
- unsigned long it_real_value, it_prof_value, it_virt_value;
- unsigned long it_real_incr, it_prof_incr, it_virt_incr;
- struct timer_list real_timer;
- struct tms times;
- unsigned long start_time;
- long per_cpu_utime[NR_CPUS], per_cpu_stime[NR_CPUS];
-/* mm fault and swap info: this can arguably be seen as either mm-specific or
thread-specific */
- unsigned long min_flt, maj_flt, nswap, cmin_flt, cmaj_flt, cnswap;
- int swappable:1;
-/* process credentials */
- uid_t uid,euid,suid,fsuid;
- gid_t gid,egid,sgid,fsgid;
- int ngroups;
- gid_t groups[NGROUPS];
- kernel_cap_t cap_effective, cap_inheritable, cap_permitted;
- int keep_capabilities:1;
- struct user_struct *user;
-/* limits */
- struct rlimit rlim[RLIM_NLIMITS];
- unsigned short used_math;
- char comm[16];
-/* file system info */
- int link_count, total_link_count;
- struct tty_struct *tty; /* NULL if no tty */
- unsigned int locks; /* How many file locks are being held */
-/* ipc stuff */
- struct sem_undo *semundo;
- struct sem_queue *semsleeping;
-/* CPU-specific state of this task */
- struct thread_struct thread;
-/* filesystem information */
- struct fs_struct *fs;
-/* open file information */
- struct files_struct *files;
-/* namespace */
- struct namespace *namespace;
-/* signal handlers */
- spinlock_t sigmask_lock; /* Protects signal and blocked */
- struct signal_struct *sig;
-
- sigset_t blocked;
- struct sigpending pending;
-
- unsigned long sas_ss_sp;
- size_t sas_ss_size;
- int (*notifier)(void *priv);
- void *notifier_data;
- sigset_t *notifier_mask;
-
-/* Thread group tracking */
- u32 parent_exec_id;
- u32 self_exec_id;
-/* Protection of (de-)allocation: mm, files, fs, tty */
- spinlock_t alloc_lock;
-
-/* journalling filesystem info */
- void *journal_info;
-};
-
-/*
- * Per process flags
- */
-#define PF_ALIGNWARN 0x00000001 /* Print alignment warning msgs */
- /* Not implemented yet, only for 486*/
-#define PF_STARTING 0x00000002 /* being created */
-#define PF_EXITING 0x00000004 /* getting shut down */
-#define PF_FORKNOEXEC 0x00000040 /* forked but didn't exec */
-#define PF_SUPERPRIV 0x00000100 /* used super-user privileges */
-#define PF_DUMPCORE 0x00000200 /* dumped core */
-#define PF_SIGNALED 0x00000400 /* killed by a signal */
-#define PF_MEMALLOC 0x00000800 /* Allocating memory */
-#define PF_MEMDIE 0x00001000 /* Killed for out-of-memory */
-#define PF_FREE_PAGES 0x00002000 /* per process page freeing */
-#define PF_NOIO 0x00004000 /* avoid generating further I/O
*/
-#define PF_FSTRANS 0x00008000 /* inside a filesystem transaction */
-
-#define PF_USEDFPU 0x00100000 /* task used FPU this quantum (SMP) */
-
-/*
- * Ptrace flags
- */
-
-#define PT_PTRACED 0x00000001
-#define PT_TRACESYS 0x00000002
-#define PT_DTRACE 0x00000004 /* delayed trace (used on m68k, i386) */
-#define PT_TRACESYSGOOD 0x00000008
-#define PT_PTRACE_CAP 0x00000010 /* ptracer can follow suid-exec */
-
-#define is_dumpable(tsk) ((tsk)->task_dumpable && (tsk)->mm &&
(tsk)->mm->dumpable)
-
-/*
- * Limit the stack by to some sane default: root can always
- * increase this limit if needed.. 8MB seems reasonable.
- */
-#define _STK_LIM (8*1024*1024)
-
-#define DEF_COUNTER (10*HZ/100) /* 100 ms time slice */
-#define MAX_COUNTER (20*HZ/100)
-#define DEF_NICE (0)
-
-extern void yield(void);
-
-/*
- * The default (Linux) execution domain.
- */
-extern struct exec_domain default_exec_domain;
-
-/*
- * INIT_TASK is used to set up the first task table, touch at
- * your own risk!. Base=0, limit=0x1fffff (=2MB)
- */
-#define INIT_TASK(tsk) \
-{ \
- state: 0, \
- flags: 0, \
- sigpending: 0,
\
- addr_limit: KERNEL_DS,
\
- exec_domain: &default_exec_domain, \
- lock_depth: -1,
\
- counter: DEF_COUNTER, \
- nice: DEF_NICE, \
- policy: SCHED_OTHER, \
- mm: NULL,
\
- active_mm: &init_mm, \
- cpus_runnable: ~0UL, \
- cpus_allowed: ~0UL, \
- run_list: LIST_HEAD_INIT(tsk.run_list), \
- next_task: &tsk, \
- prev_task: &tsk, \
- p_opptr: &tsk, \
- p_pptr: &tsk, \
- thread_group: LIST_HEAD_INIT(tsk.thread_group), \
- wait_chldexit: __WAIT_QUEUE_HEAD_INITIALIZER(tsk.wait_chldexit),\
- real_timer: {
\
- function: it_real_fn \
- }, \
- cap_effective: CAP_INIT_EFF_SET, \
- cap_inheritable: CAP_INIT_INH_SET, \
- cap_permitted: CAP_FULL_SET, \
- keep_capabilities: 0, \
- rlim: INIT_RLIMITS, \
- user: INIT_USER, \
- comm: "swapper", \
- thread: INIT_THREAD, \
- fs: &init_fs,
\
- files: &init_files, \
- sigmask_lock: SPIN_LOCK_UNLOCKED, \
- sig: &init_signals, \
- pending: { NULL, &tsk.pending.head, {{0}}}, \
- blocked: {{0}}, \
- alloc_lock: SPIN_LOCK_UNLOCKED,
\
- journal_info: NULL, \
-}
-
-
-#ifndef INIT_TASK_SIZE
-# define INIT_TASK_SIZE 2048*sizeof(long)
-#endif
-
-union task_union {
- struct task_struct task;
- unsigned long stack[INIT_TASK_SIZE/sizeof(long)];
-};
-
-extern union task_union init_task_union;
-
-extern struct mm_struct init_mm;
-extern struct task_struct *init_tasks[NR_CPUS];
-
-/* PID hashing. (shouldnt this be dynamic?) */
-#define PIDHASH_SZ (4096 >> 2)
-extern struct task_struct *pidhash[PIDHASH_SZ];
-
-#define pid_hashfn(x) ((((x) >> 8) ^ (x)) & (PIDHASH_SZ - 1))
-
-static inline void hash_pid(struct task_struct *p)
-{
- struct task_struct **htable = &pidhash[pid_hashfn(p->pid)];
-
- if((p->pidhash_next = *htable) != NULL)
- (*htable)->pidhash_pprev = &p->pidhash_next;
- *htable = p;
- p->pidhash_pprev = htable;
-}
-
-static inline void unhash_pid(struct task_struct *p)
-{
- if(p->pidhash_next)
- p->pidhash_next->pidhash_pprev = p->pidhash_pprev;
- *p->pidhash_pprev = p->pidhash_next;
-}
-
-static inline struct task_struct *find_task_by_pid(int pid)
-{
- struct task_struct *p, **htable = &pidhash[pid_hashfn(pid)];
-
- for(p = *htable; p && p->pid != pid; p = p->pidhash_next)
- ;
-
- return p;
-}
-
-#define task_has_cpu(tsk) ((tsk)->cpus_runnable != ~0UL)
-
-static inline void task_set_cpu(struct task_struct *tsk, unsigned int cpu)
-{
- tsk->processor = cpu;
- tsk->cpus_runnable = 1UL << cpu;
-}
-
-static inline void task_release_cpu(struct task_struct *tsk)
-{
- tsk->cpus_runnable = ~0UL;
-}
-
-/* per-UID process charging. */
-extern struct user_struct * alloc_uid(uid_t);
-extern void free_uid(struct user_struct *);
-extern void switch_uid(struct user_struct *);
-
-#include <asm/current.h>
-
-extern unsigned long volatile jiffies;
-extern unsigned long itimer_ticks;
-extern unsigned long itimer_next;
-extern struct timeval xtime;
-extern void do_timer(struct pt_regs *);
-#ifdef CONFIG_NO_IDLE_HZ
-extern void do_timer_ticks(int ticks);
-#endif
-
-extern unsigned int * prof_buffer;
-extern unsigned long prof_len;
-extern unsigned long prof_shift;
-
-#define CURRENT_TIME (xtime.tv_sec)
-
-extern void FASTCALL(__wake_up(wait_queue_head_t *q, unsigned int mode, int
nr));
-extern void FASTCALL(__wake_up_sync(wait_queue_head_t *q, unsigned int mode,
int nr));
-extern void FASTCALL(sleep_on(wait_queue_head_t *q));
-extern long FASTCALL(sleep_on_timeout(wait_queue_head_t *q,
- signed long timeout));
-extern void FASTCALL(interruptible_sleep_on(wait_queue_head_t *q));
-extern long FASTCALL(interruptible_sleep_on_timeout(wait_queue_head_t *q,
- signed long timeout));
-extern int FASTCALL(wake_up_process(struct task_struct * tsk));
-
-#define wake_up(x) __wake_up((x),TASK_UNINTERRUPTIBLE |
TASK_INTERRUPTIBLE, 1)
-#define wake_up_nr(x, nr) __wake_up((x),TASK_UNINTERRUPTIBLE |
TASK_INTERRUPTIBLE, nr)
-#define wake_up_all(x) __wake_up((x),TASK_UNINTERRUPTIBLE |
TASK_INTERRUPTIBLE, 0)
-#define wake_up_sync(x)
__wake_up_sync((x),TASK_UNINTERRUPTIBLE | TASK_INTERRUPTIBLE, 1)
-#define wake_up_sync_nr(x, nr) __wake_up_sync((x),TASK_UNINTERRUPTIBLE
| TASK_INTERRUPTIBLE, nr)
-#define wake_up_interruptible(x) __wake_up((x),TASK_INTERRUPTIBLE, 1)
-#define wake_up_interruptible_nr(x, nr)
__wake_up((x),TASK_INTERRUPTIBLE, nr)
-#define wake_up_interruptible_all(x) __wake_up((x),TASK_INTERRUPTIBLE, 0)
-#define wake_up_interruptible_sync(x) __wake_up_sync((x),TASK_INTERRUPTIBLE,
1)
-#define wake_up_interruptible_sync_nr(x, nr)
__wake_up_sync((x),TASK_INTERRUPTIBLE, nr)
-asmlinkage long sys_wait4(pid_t pid,unsigned int * stat_addr, int options,
struct rusage * ru);
-
-extern int in_group_p(gid_t);
-extern int in_egroup_p(gid_t);
-
-extern void proc_caches_init(void);
-extern void flush_signals(struct task_struct *);
-extern void flush_signal_handlers(struct task_struct *);
-extern void sig_exit(int, int, struct siginfo *);
-extern int dequeue_signal(sigset_t *, siginfo_t *);
-extern void block_all_signals(int (*notifier)(void *priv), void *priv,
- sigset_t *mask);
-extern void unblock_all_signals(void);
-extern int send_sig_info(int, struct siginfo *, struct task_struct *);
-extern int force_sig_info(int, struct siginfo *, struct task_struct *);
-extern int kill_pg_info(int, struct siginfo *, pid_t);
-extern int kill_sl_info(int, struct siginfo *, pid_t);
-extern int kill_proc_info(int, struct siginfo *, pid_t);
-extern void notify_parent(struct task_struct *, int);
-extern void do_notify_parent(struct task_struct *, int);
-extern void force_sig(int, struct task_struct *);
-extern int send_sig(int, struct task_struct *, int);
-extern int kill_pg(pid_t, int, int);
-extern int kill_sl(pid_t, int, int);
-extern int kill_proc(pid_t, int, int);
-extern int do_sigaction(int, const struct k_sigaction *, struct k_sigaction *);
-extern int do_sigaltstack(const stack_t *, stack_t *, unsigned long);
-
-static inline int signal_pending(struct task_struct *p)
-{
- return (p->sigpending != 0);
-}
-
-/*
- * Re-calculate pending state from the set of locally pending
- * signals, globally pending signals, and blocked signals.
- */
-static inline int has_pending_signals(sigset_t *signal, sigset_t *blocked)
-{
- unsigned long ready;
- long i;
-
- switch (_NSIG_WORDS) {
- default:
- for (i = _NSIG_WORDS, ready = 0; --i >= 0 ;)
- ready |= signal->sig[i] &~ blocked->sig[i];
- break;
-
- case 4: ready = signal->sig[3] &~ blocked->sig[3];
- ready |= signal->sig[2] &~ blocked->sig[2];
- ready |= signal->sig[1] &~ blocked->sig[1];
- ready |= signal->sig[0] &~ blocked->sig[0];
- break;
-
- case 2: ready = signal->sig[1] &~ blocked->sig[1];
- ready |= signal->sig[0] &~ blocked->sig[0];
- break;
-
- case 1: ready = signal->sig[0] &~ blocked->sig[0];
- }
- return ready != 0;
-}
-
-/* Reevaluate whether the task has signals pending delivery.
- This is required every time the blocked sigset_t changes.
- All callers should have t->sigmask_lock. */
-
-static inline void recalc_sigpending(struct task_struct *t)
-{
- t->sigpending = has_pending_signals(&t->pending.signal, &t->blocked);
-}
-
-/* True if we are on the alternate signal stack. */
-
-static inline int on_sig_stack(unsigned long sp)
-{
- return (sp - current->sas_ss_sp < current->sas_ss_size);
-}
-
-static inline int sas_ss_flags(unsigned long sp)
-{
- return (current->sas_ss_size == 0 ? SS_DISABLE
- : on_sig_stack(sp) ? SS_ONSTACK : 0);
-}
-
-extern int request_irq(unsigned int,
- void (*handler)(int, void *, struct pt_regs *),
- unsigned long, const char *, void *);
-extern void free_irq(unsigned int, void *);
-
-/*
- * This has now become a routine instead of a macro, it sets a flag if
- * it returns true (to do BSD-style accounting where the process is flagged
- * if it uses root privs). The implication of this is that you should do
- * normal permissions checks first, and check suser() last.
- *
- * [Dec 1997 -- Chris Evans]
- * For correctness, the above considerations need to be extended to
- * fsuser(). This is done, along with moving fsuser() checks to be
- * last.
- *
- * These will be removed, but in the mean time, when the SECURE_NOROOT
- * flag is set, uids don't grant privilege.
- */
-static inline int suser(void)
-{
- if (!issecure(SECURE_NOROOT) && current->euid == 0) {
- current->flags |= PF_SUPERPRIV;
- return 1;
- }
- return 0;
-}
-
-static inline int fsuser(void)
-{
- if (!issecure(SECURE_NOROOT) && current->fsuid == 0) {
- current->flags |= PF_SUPERPRIV;
- return 1;
- }
- return 0;
-}
-
-/*
- * capable() checks for a particular capability.
- * New privilege checks should use this interface, rather than suser() or
- * fsuser(). See include/linux/capability.h for defined capabilities.
- */
-
-static inline int capable(int cap)
-{
-#if 1 /* ok now */
- if (cap_raised(current->cap_effective, cap))
-#else
- if (cap_is_fs_cap(cap) ? current->fsuid == 0 : current->euid == 0)
-#endif
- {
- current->flags |= PF_SUPERPRIV;
- return 1;
- }
- return 0;
-}
-
-/*
- * Routines for handling mm_structs
- */
-extern struct mm_struct * mm_alloc(void);
-
-extern struct mm_struct * start_lazy_tlb(void);
-extern void end_lazy_tlb(struct mm_struct *mm);
-
-/* mmdrop drops the mm and the page tables */
-extern void FASTCALL(__mmdrop(struct mm_struct *));
-static inline void mmdrop(struct mm_struct * mm)
-{
- if (atomic_dec_and_test(&mm->mm_count))
- __mmdrop(mm);
-}
-
-/* mmput gets rid of the mappings and all user-space */
-extern void mmput(struct mm_struct *);
-/* Remove the current tasks stale references to the old mm_struct */
-extern void mm_release(void);
-
-/*
- * Routines for handling the fd arrays
- */
-extern struct file ** alloc_fd_array(int);
-extern int expand_fd_array(struct files_struct *, int nr);
-extern void free_fd_array(struct file **, int);
-
-extern fd_set *alloc_fdset(int);
-extern int expand_fdset(struct files_struct *, int nr);
-extern void free_fdset(fd_set *, int);
-
-extern int copy_thread(int, unsigned long, unsigned long, unsigned long,
struct task_struct *, struct pt_regs *);
-extern void flush_thread(void);
-extern void exit_thread(void);
-
-extern void exit_mm(struct task_struct *);
-extern void exit_files(struct task_struct *);
-extern void exit_sighand(struct task_struct *);
-
-extern void reparent_to_init(void);
-extern void daemonize(void);
-
-extern int do_execve(char *, char **, char **, struct pt_regs *);
-extern int do_fork(unsigned long, unsigned long, struct pt_regs *, unsigned
long);
-
-extern void set_task_comm(struct task_struct *tsk, char *from);
-extern void get_task_comm(char *to, struct task_struct *tsk);
-
-extern void FASTCALL(add_wait_queue(wait_queue_head_t *q, wait_queue_t *
wait));
-extern void FASTCALL(add_wait_queue_exclusive(wait_queue_head_t *q,
wait_queue_t * wait));
-extern void FASTCALL(remove_wait_queue(wait_queue_head_t *q, wait_queue_t *
wait));
-
-extern long kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
-
-#define __wait_event(wq, condition) \
-do { \
- wait_queue_t __wait; \
- init_waitqueue_entry(&__wait, current); \
- \
- add_wait_queue(&wq, &__wait); \
- for (;;) { \
- set_current_state(TASK_UNINTERRUPTIBLE); \
- if (condition) \
- break; \
- schedule(); \
- } \
- current->state = TASK_RUNNING; \
- remove_wait_queue(&wq, &__wait); \
-} while (0)
-
-#define wait_event(wq, condition) \
-do { \
- if (condition) \
- break; \
- __wait_event(wq, condition); \
-} while (0)
-
-#define __wait_event_interruptible(wq, condition, ret) \
-do { \
- wait_queue_t __wait; \
- init_waitqueue_entry(&__wait, current); \
- \
- add_wait_queue(&wq, &__wait); \
- for (;;) { \
- set_current_state(TASK_INTERRUPTIBLE); \
- if (condition) \
- break; \
- if (!signal_pending(current)) { \
- schedule(); \
- continue; \
- } \
- ret = -ERESTARTSYS; \
- break; \
- } \
- current->state = TASK_RUNNING; \
- remove_wait_queue(&wq, &__wait); \
-} while (0)
-
-#define wait_event_interruptible(wq, condition)
\
-({ \
- int __ret = 0; \
- if (!(condition)) \
- __wait_event_interruptible(wq, condition, __ret); \
- __ret; \
-})
-
-#define REMOVE_LINKS(p) do { \
- (p)->next_task->prev_task = (p)->prev_task; \
- (p)->prev_task->next_task = (p)->next_task; \
- if ((p)->p_osptr) \
- (p)->p_osptr->p_ysptr = (p)->p_ysptr; \
- if ((p)->p_ysptr) \
- (p)->p_ysptr->p_osptr = (p)->p_osptr; \
- else \
- (p)->p_pptr->p_cptr = (p)->p_osptr; \
- } while (0)
-
-#define SET_LINKS(p) do { \
- (p)->next_task = &init_task; \
- (p)->prev_task = init_task.prev_task; \
- init_task.prev_task->next_task = (p); \
- init_task.prev_task = (p); \
- (p)->p_ysptr = NULL; \
- if (((p)->p_osptr = (p)->p_pptr->p_cptr) != NULL) \
- (p)->p_osptr->p_ysptr = p; \
- (p)->p_pptr->p_cptr = p; \
- } while (0)
-
-#define for_each_task(p) \
- for (p = &init_task ; (p = p->next_task) != &init_task ; )
-
-#define for_each_thread(task) \
- for (task = next_thread(current) ; task != current ; task =
next_thread(task))
-
-#define next_thread(p) \
- list_entry((p)->thread_group.next, struct task_struct, thread_group)
-
-#define thread_group_leader(p) (p->pid == p->tgid)
-
-static inline void del_from_runqueue(struct task_struct * p)
-{
- nr_running--;
- p->sleep_time = jiffies;
- list_del(&p->run_list);
- p->run_list.next = NULL;
-}
-
-static inline int task_on_runqueue(struct task_struct *p)
-{
- return (p->run_list.next != NULL);
-}
-
-static inline void unhash_process(struct task_struct *p)
-{
- if (task_on_runqueue(p))
- out_of_line_bug();
- write_lock_irq(&tasklist_lock);
- nr_threads--;
- unhash_pid(p);
- REMOVE_LINKS(p);
- list_del(&p->thread_group);
- write_unlock_irq(&tasklist_lock);
-}
-
-/* Protects ->fs, ->files, ->mm, and synchronises with wait4(). Nests inside
tasklist_lock */
-static inline void task_lock(struct task_struct *p)
-{
- spin_lock(&p->alloc_lock);
-}
-
-static inline void task_unlock(struct task_struct *p)
-{
- spin_unlock(&p->alloc_lock);
-}
-
-/* write full pathname into buffer and return start of pathname */
-static inline char * d_path(struct dentry *dentry, struct vfsmount *vfsmnt,
- char *buf, int buflen)
-{
- char *res;
- struct vfsmount *rootmnt;
- struct dentry *root;
- read_lock(¤t->fs->lock);
- rootmnt = mntget(current->fs->rootmnt);
- root = dget(current->fs->root);
- read_unlock(¤t->fs->lock);
- spin_lock(&dcache_lock);
- res = __d_path(dentry, vfsmnt, root, rootmnt, buf, buflen);
- spin_unlock(&dcache_lock);
- dput(root);
- mntput(rootmnt);
- return res;
-}
-
-static inline int need_resched(void)
-{
- return (unlikely(current->need_resched));
-}
-
-extern void __cond_resched(void);
-static inline void cond_resched(void)
-{
- if (need_resched())
- __cond_resched();
-}
-
-#endif /* __KERNEL__ */
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/linux/skbuff.h
--- a/linux-2.4.30-xen-sparse/include/linux/skbuff.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,1181 +0,0 @@
-/*
- * Definitions for the 'struct sk_buff' memory handlers.
- *
- * Authors:
- * Alan Cox, <gw4pts@xxxxxxxxxxxxxxx>
- * Florian La Roche, <rzsfl@xxxxxxxxxxxx>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _LINUX_SKBUFF_H
-#define _LINUX_SKBUFF_H
-
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/time.h>
-#include <linux/cache.h>
-
-#include <asm/atomic.h>
-#include <asm/types.h>
-#include <linux/spinlock.h>
-#include <linux/mm.h>
-#include <linux/highmem.h>
-
-#define HAVE_ALLOC_SKB /* For the drivers to know */
-#define HAVE_ALIGNABLE_SKB /* Ditto 8) */
-#define SLAB_SKB /* Slabified skbuffs */
-
-#define CHECKSUM_NONE 0
-#define CHECKSUM_HW 1
-#define CHECKSUM_UNNECESSARY 2
-
-#define SKB_DATA_ALIGN(X) (((X) + (SMP_CACHE_BYTES-1)) &
~(SMP_CACHE_BYTES-1))
-#define SKB_MAX_ORDER(X,ORDER) (((PAGE_SIZE<<(ORDER)) - (X) - sizeof(struct
skb_shared_info))&~(SMP_CACHE_BYTES-1))
-#define SKB_MAX_HEAD(X) (SKB_MAX_ORDER((X),0))
-#define SKB_MAX_ALLOC (SKB_MAX_ORDER(0,2))
-
-/* A. Checksumming of received packets by device.
- *
- * NONE: device failed to checksum this packet.
- * skb->csum is undefined.
- *
- * UNNECESSARY: device parsed packet and wouldbe verified checksum.
- * skb->csum is undefined.
- * It is bad option, but, unfortunately, many of vendors do this.
- * Apparently with secret goal to sell you new device, when you
- * will add new protocol to your host. F.e. IPv6. 8)
- *
- * HW: the most generic way. Device supplied checksum of _all_
- * the packet as seen by netif_rx in skb->csum.
- * NOTE: Even if device supports only some protocols, but
- * is able to produce some skb->csum, it MUST use HW,
- * not UNNECESSARY.
- *
- * B. Checksumming on output.
- *
- * NONE: skb is checksummed by protocol or csum is not required.
- *
- * HW: device is required to csum packet as seen by hard_start_xmit
- * from skb->h.raw to the end and to record the checksum
- * at skb->h.raw+skb->csum.
- *
- * Device must show its capabilities in dev->features, set
- * at device setup time.
- * NETIF_F_HW_CSUM - it is clever device, it is able to checksum
- * everything.
- * NETIF_F_NO_CSUM - loopback or reliable single hop media.
- * NETIF_F_IP_CSUM - device is dumb. It is able to csum only
- * TCP/UDP over IPv4. Sigh. Vendors like this
- * way by an unknown reason. Though, see comment above
- * about CHECKSUM_UNNECESSARY. 8)
- *
- * Any questions? No questions, good. --ANK
- */
-
-#ifdef __i386__
-#define NET_CALLER(arg) (*(((void**)&arg)-1))
-#else
-#define NET_CALLER(arg) __builtin_return_address(0)
-#endif
-
-#ifdef CONFIG_NETFILTER
-struct nf_conntrack {
- atomic_t use;
- void (*destroy)(struct nf_conntrack *);
-};
-
-struct nf_ct_info {
- struct nf_conntrack *master;
-};
-#endif
-
-struct sk_buff_head {
- /* These two members must be first. */
- struct sk_buff * next;
- struct sk_buff * prev;
-
- __u32 qlen;
- spinlock_t lock;
-};
-
-struct sk_buff;
-
-#define MAX_SKB_FRAGS 6
-
-typedef struct skb_frag_struct skb_frag_t;
-
-struct skb_frag_struct
-{
- struct page *page;
- __u16 page_offset;
- __u16 size;
-};
-
-/* This data is invariant across clones and lives at
- * the end of the header data, ie. at skb->end.
- */
-struct skb_shared_info {
- atomic_t dataref;
- unsigned int nr_frags;
- struct sk_buff *frag_list;
- skb_frag_t frags[MAX_SKB_FRAGS];
-};
-
-struct sk_buff {
- /* These two members must be first. */
- struct sk_buff * next; /* Next buffer in list
*/
- struct sk_buff * prev; /* Previous buffer in list
*/
-
- struct sk_buff_head * list; /* List we are on
*/
- struct sock *sk; /* Socket we are owned by
*/
- struct timeval stamp; /* Time we arrived
*/
- struct net_device *dev; /* Device we arrived on/are
leaving by */
- struct net_device *real_dev; /* For support of point to
point protocols
- (e.g. 802.3ad) over bonding,
we must save the
- physical device that got the
packet before
- replacing skb->dev with the
virtual device. */
-
- /* Transport layer header */
- union
- {
- struct tcphdr *th;
- struct udphdr *uh;
- struct icmphdr *icmph;
- struct igmphdr *igmph;
- struct iphdr *ipiph;
- struct spxhdr *spxh;
- unsigned char *raw;
- } h;
-
- /* Network layer header */
- union
- {
- struct iphdr *iph;
- struct ipv6hdr *ipv6h;
- struct arphdr *arph;
- struct ipxhdr *ipxh;
- unsigned char *raw;
- } nh;
-
- /* Link layer header */
- union
- {
- struct ethhdr *ethernet;
- unsigned char *raw;
- } mac;
-
- struct dst_entry *dst;
-
- /*
- * This is the control buffer. It is free to use for every
- * layer. Please put your private variables there. If you
- * want to keep them across layers you have to do a skb_clone()
- * first. This is owned by whoever has the skb queued ATM.
- */
- char cb[48];
-
- unsigned int len; /* Length of actual data
*/
- unsigned int data_len;
- unsigned int csum; /* Checksum
*/
- unsigned char __unused, /* Dead field, may be reused
*/
- cloned, /* head may be cloned (check
refcnt to be sure). */
- pkt_type, /* Packet class
*/
- ip_summed; /* Driver fed us an IP checksum
*/
- __u32 priority; /* Packet queueing priority
*/
- atomic_t users; /* User count - see
datagram.c,tcp.c */
- unsigned short protocol; /* Packet protocol from driver.
*/
- unsigned short security; /* Security level of packet
*/
- unsigned int truesize; /* Buffer size
*/
-
- unsigned char *head; /* Head of buffer
*/
- unsigned char *data; /* Data head pointer
*/
- unsigned char *tail; /* Tail pointer
*/
- unsigned char *end; /* End pointer
*/
-
- void (*destructor)(struct sk_buff *); /* Destruct
function */
-#ifdef CONFIG_NETFILTER
- /* Can be used for communication between hooks. */
- unsigned long nfmark;
- /* Cache info */
- __u32 nfcache;
- /* Associated connection, if any */
- struct nf_ct_info *nfct;
-#ifdef CONFIG_NETFILTER_DEBUG
- unsigned int nf_debug;
-#endif
-#endif /*CONFIG_NETFILTER*/
-
-#if defined(CONFIG_HIPPI)
- union{
- __u32 ifield;
- } private;
-#endif
-
-#ifdef CONFIG_NET_SCHED
- __u32 tc_index; /* traffic control index */
-#endif
-};
-
-#ifdef __KERNEL__
-/*
- * Handling routines are only of interest to the kernel
- */
-#include <linux/slab.h>
-
-#include <asm/system.h>
-
-extern void __kfree_skb(struct sk_buff *skb);
-extern struct sk_buff * alloc_skb(unsigned int size, int
priority);
-extern struct sk_buff * alloc_skb_from_cache(kmem_cache_t *cp,
unsigned int size, int priority);
-extern void kfree_skbmem(struct sk_buff *skb);
-extern struct sk_buff * skb_clone(struct sk_buff *skb, int
priority);
-extern struct sk_buff * skb_copy(const struct sk_buff *skb, int
priority);
-extern struct sk_buff * pskb_copy(struct sk_buff *skb, int
gfp_mask);
-extern int pskb_expand_head(struct sk_buff *skb, int
nhead, int ntail, int gfp_mask);
-extern struct sk_buff * skb_realloc_headroom(struct sk_buff
*skb, unsigned int headroom);
-extern struct sk_buff * skb_copy_expand(const struct sk_buff
*skb,
- int newheadroom,
- int newtailroom,
- int priority);
-extern struct sk_buff * skb_pad(struct sk_buff *skb, int pad);
-#define dev_kfree_skb(a) kfree_skb(a)
-extern void skb_over_panic(struct sk_buff *skb, int len, void *here);
-extern void skb_under_panic(struct sk_buff *skb, int len, void *here);
-
-/* Internal */
-#define skb_shinfo(SKB) ((struct skb_shared_info *)((SKB)->end))
-
-/**
- * skb_queue_empty - check if a queue is empty
- * @list: queue head
- *
- * Returns true if the queue is empty, false otherwise.
- */
-
-static inline int skb_queue_empty(struct sk_buff_head *list)
-{
- return (list->next == (struct sk_buff *) list);
-}
-
-/**
- * skb_get - reference buffer
- * @skb: buffer to reference
- *
- * Makes another reference to a socket buffer and returns a pointer
- * to the buffer.
- */
-
-static inline struct sk_buff *skb_get(struct sk_buff *skb)
-{
- atomic_inc(&skb->users);
- return skb;
-}
-
-/*
- * If users==1, we are the only owner and are can avoid redundant
- * atomic change.
- */
-
-/**
- * kfree_skb - free an sk_buff
- * @skb: buffer to free
- *
- * Drop a reference to the buffer and free it if the usage count has
- * hit zero.
- */
-
-static inline void kfree_skb(struct sk_buff *skb)
-{
- if (likely(atomic_read(&skb->users) == 1))
- smp_rmb();
- else if (likely(!atomic_dec_and_test(&skb->users)))
- return;
- __kfree_skb(skb);
-}
-
-/**
- * skb_cloned - is the buffer a clone
- * @skb: buffer to check
- *
- * Returns true if the buffer was generated with skb_clone() and is
- * one of multiple shared copies of the buffer. Cloned buffers are
- * shared data so must not be written to under normal circumstances.
- */
-
-static inline int skb_cloned(struct sk_buff *skb)
-{
- return skb->cloned && atomic_read(&skb_shinfo(skb)->dataref) != 1;
-}
-
-/**
- * skb_shared - is the buffer shared
- * @skb: buffer to check
- *
- * Returns true if more than one person has a reference to this
- * buffer.
- */
-
-static inline int skb_shared(struct sk_buff *skb)
-{
- return (atomic_read(&skb->users) != 1);
-}
-
-/**
- * skb_share_check - check if buffer is shared and if so clone it
- * @skb: buffer to check
- * @pri: priority for memory allocation
- *
- * If the buffer is shared the buffer is cloned and the old copy
- * drops a reference. A new clone with a single reference is returned.
- * If the buffer is not shared the original buffer is returned. When
- * being called from interrupt status or with spinlocks held pri must
- * be GFP_ATOMIC.
- *
- * NULL is returned on a memory allocation failure.
- */
-
-static inline struct sk_buff *skb_share_check(struct sk_buff *skb, int pri)
-{
- if (skb_shared(skb)) {
- struct sk_buff *nskb;
- nskb = skb_clone(skb, pri);
- kfree_skb(skb);
- return nskb;
- }
- return skb;
-}
-
-
-/*
- * Copy shared buffers into a new sk_buff. We effectively do COW on
- * packets to handle cases where we have a local reader and forward
- * and a couple of other messy ones. The normal one is tcpdumping
- * a packet thats being forwarded.
- */
-
-/**
- * skb_unshare - make a copy of a shared buffer
- * @skb: buffer to check
- * @pri: priority for memory allocation
- *
- * If the socket buffer is a clone then this function creates a new
- * copy of the data, drops a reference count on the old copy and returns
- * the new copy with the reference count at 1. If the buffer is not a clone
- * the original buffer is returned. When called with a spinlock held or
- * from interrupt state @pri must be %GFP_ATOMIC
- *
- * %NULL is returned on a memory allocation failure.
- */
-
-static inline struct sk_buff *skb_unshare(struct sk_buff *skb, int pri)
-{
- struct sk_buff *nskb;
- if(!skb_cloned(skb))
- return skb;
- nskb=skb_copy(skb, pri);
- kfree_skb(skb); /* Free our shared copy */
- return nskb;
-}
-
-/**
- * skb_peek
- * @list_: list to peek at
- *
- * Peek an &sk_buff. Unlike most other operations you _MUST_
- * be careful with this one. A peek leaves the buffer on the
- * list and someone else may run off with it. You must hold
- * the appropriate locks or have a private queue to do this.
- *
- * Returns %NULL for an empty list or a pointer to the head element.
- * The reference count is not incremented and the reference is therefore
- * volatile. Use with caution.
- */
-
-static inline struct sk_buff *skb_peek(struct sk_buff_head *list_)
-{
- struct sk_buff *list = ((struct sk_buff *)list_)->next;
- if (list == (struct sk_buff *)list_)
- list = NULL;
- return list;
-}
-
-/**
- * skb_peek_tail
- * @list_: list to peek at
- *
- * Peek an &sk_buff. Unlike most other operations you _MUST_
- * be careful with this one. A peek leaves the buffer on the
- * list and someone else may run off with it. You must hold
- * the appropriate locks or have a private queue to do this.
- *
- * Returns %NULL for an empty list or a pointer to the tail element.
- * The reference count is not incremented and the reference is therefore
- * volatile. Use with caution.
- */
-
-static inline struct sk_buff *skb_peek_tail(struct sk_buff_head *list_)
-{
- struct sk_buff *list = ((struct sk_buff *)list_)->prev;
- if (list == (struct sk_buff *)list_)
- list = NULL;
- return list;
-}
-
-/**
- * skb_queue_len - get queue length
- * @list_: list to measure
- *
- * Return the length of an &sk_buff queue.
- */
-
-static inline __u32 skb_queue_len(struct sk_buff_head *list_)
-{
- return(list_->qlen);
-}
-
-static inline void skb_queue_head_init(struct sk_buff_head *list)
-{
- spin_lock_init(&list->lock);
- list->prev = (struct sk_buff *)list;
- list->next = (struct sk_buff *)list;
- list->qlen = 0;
-}
-
-/*
- * Insert an sk_buff at the start of a list.
- *
- * The "__skb_xxxx()" functions are the non-atomic ones that
- * can only be called with interrupts disabled.
- */
-
-/**
- * __skb_queue_head - queue a buffer at the list head
- * @list: list to use
- * @newsk: buffer to queue
- *
- * Queue a buffer at the start of a list. This function takes no locks
- * and you must therefore hold required locks before calling it.
- *
- * A buffer cannot be placed on two lists at the same time.
- */
-
-static inline void __skb_queue_head(struct sk_buff_head *list, struct sk_buff
*newsk)
-{
- struct sk_buff *prev, *next;
-
- newsk->list = list;
- list->qlen++;
- prev = (struct sk_buff *)list;
- next = prev->next;
- newsk->next = next;
- newsk->prev = prev;
- next->prev = newsk;
- prev->next = newsk;
-}
-
-
-/**
- * skb_queue_head - queue a buffer at the list head
- * @list: list to use
- * @newsk: buffer to queue
- *
- * Queue a buffer at the start of the list. This function takes the
- * list lock and can be used safely with other locking &sk_buff functions
- * safely.
- *
- * A buffer cannot be placed on two lists at the same time.
- */
-
-static inline void skb_queue_head(struct sk_buff_head *list, struct sk_buff
*newsk)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&list->lock, flags);
- __skb_queue_head(list, newsk);
- spin_unlock_irqrestore(&list->lock, flags);
-}
-
-/**
- * __skb_queue_tail - queue a buffer at the list tail
- * @list: list to use
- * @newsk: buffer to queue
- *
- * Queue a buffer at the end of a list. This function takes no locks
- * and you must therefore hold required locks before calling it.
- *
- * A buffer cannot be placed on two lists at the same time.
- */
-
-
-static inline void __skb_queue_tail(struct sk_buff_head *list, struct sk_buff
*newsk)
-{
- struct sk_buff *prev, *next;
-
- newsk->list = list;
- list->qlen++;
- next = (struct sk_buff *)list;
- prev = next->prev;
- newsk->next = next;
- newsk->prev = prev;
- next->prev = newsk;
- prev->next = newsk;
-}
-
-/**
- * skb_queue_tail - queue a buffer at the list tail
- * @list: list to use
- * @newsk: buffer to queue
- *
- * Queue a buffer at the tail of the list. This function takes the
- * list lock and can be used safely with other locking &sk_buff functions
- * safely.
- *
- * A buffer cannot be placed on two lists at the same time.
- */
-
-static inline void skb_queue_tail(struct sk_buff_head *list, struct sk_buff
*newsk)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&list->lock, flags);
- __skb_queue_tail(list, newsk);
- spin_unlock_irqrestore(&list->lock, flags);
-}
-
-/**
- * __skb_dequeue - remove from the head of the queue
- * @list: list to dequeue from
- *
- * Remove the head of the list. This function does not take any locks
- * so must be used with appropriate locks held only. The head item is
- * returned or %NULL if the list is empty.
- */
-
-static inline struct sk_buff *__skb_dequeue(struct sk_buff_head *list)
-{
- struct sk_buff *next, *prev, *result;
-
- prev = (struct sk_buff *) list;
- next = prev->next;
- result = NULL;
- if (next != prev) {
- result = next;
- next = next->next;
- list->qlen--;
- next->prev = prev;
- prev->next = next;
- result->next = NULL;
- result->prev = NULL;
- result->list = NULL;
- }
- return result;
-}
-
-/**
- * skb_dequeue - remove from the head of the queue
- * @list: list to dequeue from
- *
- * Remove the head of the list. The list lock is taken so the function
- * may be used safely with other locking list functions. The head item is
- * returned or %NULL if the list is empty.
- */
-
-static inline struct sk_buff *skb_dequeue(struct sk_buff_head *list)
-{
- unsigned long flags;
- struct sk_buff *result;
-
- spin_lock_irqsave(&list->lock, flags);
- result = __skb_dequeue(list);
- spin_unlock_irqrestore(&list->lock, flags);
- return result;
-}
-
-/*
- * Insert a packet on a list.
- */
-
-static inline void __skb_insert(struct sk_buff *newsk,
- struct sk_buff * prev, struct sk_buff *next,
- struct sk_buff_head * list)
-{
- newsk->next = next;
- newsk->prev = prev;
- next->prev = newsk;
- prev->next = newsk;
- newsk->list = list;
- list->qlen++;
-}
-
-/**
- * skb_insert - insert a buffer
- * @old: buffer to insert before
- * @newsk: buffer to insert
- *
- * Place a packet before a given packet in a list. The list locks are taken
- * and this function is atomic with respect to other list locked calls
- * A buffer cannot be placed on two lists at the same time.
- */
-
-static inline void skb_insert(struct sk_buff *old, struct sk_buff *newsk)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&old->list->lock, flags);
- __skb_insert(newsk, old->prev, old, old->list);
- spin_unlock_irqrestore(&old->list->lock, flags);
-}
-
-/*
- * Place a packet after a given packet in a list.
- */
-
-static inline void __skb_append(struct sk_buff *old, struct sk_buff *newsk)
-{
- __skb_insert(newsk, old, old->next, old->list);
-}
-
-/**
- * skb_append - append a buffer
- * @old: buffer to insert after
- * @newsk: buffer to insert
- *
- * Place a packet after a given packet in a list. The list locks are taken
- * and this function is atomic with respect to other list locked calls.
- * A buffer cannot be placed on two lists at the same time.
- */
-
-
-static inline void skb_append(struct sk_buff *old, struct sk_buff *newsk)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&old->list->lock, flags);
- __skb_append(old, newsk);
- spin_unlock_irqrestore(&old->list->lock, flags);
-}
-
-/*
- * remove sk_buff from list. _Must_ be called atomically, and with
- * the list known..
- */
-
-static inline void __skb_unlink(struct sk_buff *skb, struct sk_buff_head *list)
-{
- struct sk_buff * next, * prev;
-
- list->qlen--;
- next = skb->next;
- prev = skb->prev;
- skb->next = NULL;
- skb->prev = NULL;
- skb->list = NULL;
- next->prev = prev;
- prev->next = next;
-}
-
-/**
- * skb_unlink - remove a buffer from a list
- * @skb: buffer to remove
- *
- * Place a packet after a given packet in a list. The list locks are taken
- * and this function is atomic with respect to other list locked calls
- *
- * Works even without knowing the list it is sitting on, which can be
- * handy at times. It also means that THE LIST MUST EXIST when you
- * unlink. Thus a list must have its contents unlinked before it is
- * destroyed.
- */
-
-static inline void skb_unlink(struct sk_buff *skb)
-{
- struct sk_buff_head *list = skb->list;
-
- if(list) {
- unsigned long flags;
-
- spin_lock_irqsave(&list->lock, flags);
- if(skb->list == list)
- __skb_unlink(skb, skb->list);
- spin_unlock_irqrestore(&list->lock, flags);
- }
-}
-
-/* XXX: more streamlined implementation */
-
-/**
- * __skb_dequeue_tail - remove from the tail of the queue
- * @list: list to dequeue from
- *
- * Remove the tail of the list. This function does not take any locks
- * so must be used with appropriate locks held only. The tail item is
- * returned or %NULL if the list is empty.
- */
-
-static inline struct sk_buff *__skb_dequeue_tail(struct sk_buff_head *list)
-{
- struct sk_buff *skb = skb_peek_tail(list);
- if (skb)
- __skb_unlink(skb, list);
- return skb;
-}
-
-/**
- * skb_dequeue - remove from the head of the queue
- * @list: list to dequeue from
- *
- * Remove the head of the list. The list lock is taken so the function
- * may be used safely with other locking list functions. The tail item is
- * returned or %NULL if the list is empty.
- */
-
-static inline struct sk_buff *skb_dequeue_tail(struct sk_buff_head *list)
-{
- unsigned long flags;
- struct sk_buff *result;
-
- spin_lock_irqsave(&list->lock, flags);
- result = __skb_dequeue_tail(list);
- spin_unlock_irqrestore(&list->lock, flags);
- return result;
-}
-
-static inline int skb_is_nonlinear(const struct sk_buff *skb)
-{
- return skb->data_len;
-}
-
-static inline unsigned int skb_headlen(const struct sk_buff *skb)
-{
- return skb->len - skb->data_len;
-}
-
-#define SKB_PAGE_ASSERT(skb) do { if (skb_shinfo(skb)->nr_frags)
out_of_line_bug(); } while (0)
-#define SKB_FRAG_ASSERT(skb) do { if (skb_shinfo(skb)->frag_list)
out_of_line_bug(); } while (0)
-#define SKB_LINEAR_ASSERT(skb) do { if (skb_is_nonlinear(skb))
out_of_line_bug(); } while (0)
-
-/*
- * Add data to an sk_buff
- */
-
-static inline unsigned char *__skb_put(struct sk_buff *skb, unsigned int len)
-{
- unsigned char *tmp=skb->tail;
- SKB_LINEAR_ASSERT(skb);
- skb->tail+=len;
- skb->len+=len;
- return tmp;
-}
-
-/**
- * skb_put - add data to a buffer
- * @skb: buffer to use
- * @len: amount of data to add
- *
- * This function extends the used data area of the buffer. If this would
- * exceed the total buffer size the kernel will panic. A pointer to the
- * first byte of the extra data is returned.
- */
-
-static inline unsigned char *skb_put(struct sk_buff *skb, unsigned int len)
-{
- unsigned char *tmp=skb->tail;
- SKB_LINEAR_ASSERT(skb);
- skb->tail+=len;
- skb->len+=len;
- if(skb->tail>skb->end) {
- skb_over_panic(skb, len, current_text_addr());
- }
- return tmp;
-}
-
-static inline unsigned char *__skb_push(struct sk_buff *skb, unsigned int len)
-{
- skb->data-=len;
- skb->len+=len;
- return skb->data;
-}
-
-/**
- * skb_push - add data to the start of a buffer
- * @skb: buffer to use
- * @len: amount of data to add
- *
- * This function extends the used data area of the buffer at the buffer
- * start. If this would exceed the total buffer headroom the kernel will
- * panic. A pointer to the first byte of the extra data is returned.
- */
-
-static inline unsigned char *skb_push(struct sk_buff *skb, unsigned int len)
-{
- skb->data-=len;
- skb->len+=len;
- if(skb->data<skb->head) {
- skb_under_panic(skb, len, current_text_addr());
- }
- return skb->data;
-}
-
-static inline char *__skb_pull(struct sk_buff *skb, unsigned int len)
-{
- skb->len-=len;
- if (skb->len < skb->data_len)
- out_of_line_bug();
- return skb->data+=len;
-}
-
-/**
- * skb_pull - remove data from the start of a buffer
- * @skb: buffer to use
- * @len: amount of data to remove
- *
- * This function removes data from the start of a buffer, returning
- * the memory to the headroom. A pointer to the next data in the buffer
- * is returned. Once the data has been pulled future pushes will overwrite
- * the old data.
- */
-
-static inline unsigned char * skb_pull(struct sk_buff *skb, unsigned int len)
-{
- if (len > skb->len)
- return NULL;
- return __skb_pull(skb,len);
-}
-
-extern unsigned char * __pskb_pull_tail(struct sk_buff *skb, int delta);
-
-static inline char *__pskb_pull(struct sk_buff *skb, unsigned int len)
-{
- if (len > skb_headlen(skb) &&
- __pskb_pull_tail(skb, len-skb_headlen(skb)) == NULL)
- return NULL;
- skb->len -= len;
- return skb->data += len;
-}
-
-static inline unsigned char * pskb_pull(struct sk_buff *skb, unsigned int len)
-{
- if (len > skb->len)
- return NULL;
- return __pskb_pull(skb,len);
-}
-
-static inline int pskb_may_pull(struct sk_buff *skb, unsigned int len)
-{
- if (len <= skb_headlen(skb))
- return 1;
- if (len > skb->len)
- return 0;
- return (__pskb_pull_tail(skb, len-skb_headlen(skb)) != NULL);
-}
-
-/**
- * skb_headroom - bytes at buffer head
- * @skb: buffer to check
- *
- * Return the number of bytes of free space at the head of an &sk_buff.
- */
-
-static inline int skb_headroom(const struct sk_buff *skb)
-{
- return skb->data-skb->head;
-}
-
-/**
- * skb_tailroom - bytes at buffer end
- * @skb: buffer to check
- *
- * Return the number of bytes of free space at the tail of an sk_buff
- */
-
-static inline int skb_tailroom(const struct sk_buff *skb)
-{
- return skb_is_nonlinear(skb) ? 0 : skb->end-skb->tail;
-}
-
-/**
- * skb_reserve - adjust headroom
- * @skb: buffer to alter
- * @len: bytes to move
- *
- * Increase the headroom of an empty &sk_buff by reducing the tail
- * room. This is only allowed for an empty buffer.
- */
-
-static inline void skb_reserve(struct sk_buff *skb, unsigned int len)
-{
- skb->data+=len;
- skb->tail+=len;
-}
-
-extern int ___pskb_trim(struct sk_buff *skb, unsigned int len, int realloc);
-
-static inline void __skb_trim(struct sk_buff *skb, unsigned int len)
-{
- if (!skb->data_len) {
- skb->len = len;
- skb->tail = skb->data+len;
- } else {
- ___pskb_trim(skb, len, 0);
- }
-}
-
-/**
- * skb_trim - remove end from a buffer
- * @skb: buffer to alter
- * @len: new length
- *
- * Cut the length of a buffer down by removing data from the tail. If
- * the buffer is already under the length specified it is not modified.
- */
-
-static inline void skb_trim(struct sk_buff *skb, unsigned int len)
-{
- if (skb->len > len) {
- __skb_trim(skb, len);
- }
-}
-
-
-static inline int __pskb_trim(struct sk_buff *skb, unsigned int len)
-{
- if (!skb->data_len) {
- skb->len = len;
- skb->tail = skb->data+len;
- return 0;
- } else {
- return ___pskb_trim(skb, len, 1);
- }
-}
-
-static inline int pskb_trim(struct sk_buff *skb, unsigned int len)
-{
- if (len < skb->len)
- return __pskb_trim(skb, len);
- return 0;
-}
-
-/**
- * skb_orphan - orphan a buffer
- * @skb: buffer to orphan
- *
- * If a buffer currently has an owner then we call the owner's
- * destructor function and make the @skb unowned. The buffer continues
- * to exist but is no longer charged to its former owner.
- */
-
-
-static inline void skb_orphan(struct sk_buff *skb)
-{
- if (skb->destructor)
- skb->destructor(skb);
- skb->destructor = NULL;
- skb->sk = NULL;
-}
-
-/**
- * skb_purge - empty a list
- * @list: list to empty
- *
- * Delete all buffers on an &sk_buff list. Each buffer is removed from
- * the list and one reference dropped. This function takes the list
- * lock and is atomic with respect to other list locking functions.
- */
-
-
-static inline void skb_queue_purge(struct sk_buff_head *list)
-{
- struct sk_buff *skb;
- while ((skb=skb_dequeue(list))!=NULL)
- kfree_skb(skb);
-}
-
-/**
- * __skb_purge - empty a list
- * @list: list to empty
- *
- * Delete all buffers on an &sk_buff list. Each buffer is removed from
- * the list and one reference dropped. This function does not take the
- * list lock and the caller must hold the relevant locks to use it.
- */
-
-
-static inline void __skb_queue_purge(struct sk_buff_head *list)
-{
- struct sk_buff *skb;
- while ((skb=__skb_dequeue(list))!=NULL)
- kfree_skb(skb);
-}
-
-/**
- * __dev_alloc_skb - allocate an skbuff for sending
- * @length: length to allocate
- * @gfp_mask: get_free_pages mask, passed to alloc_skb
- *
- * Allocate a new &sk_buff and assign it a usage count of one. The
- * buffer has unspecified headroom built in. Users should allocate
- * the headroom they think they need without accounting for the
- * built in space. The built in space is used for optimisations.
- *
- * %NULL is returned in there is no free memory.
- */
-#ifndef CONFIG_XEN
-static inline struct sk_buff *__dev_alloc_skb(unsigned int length,
- int gfp_mask)
-{
- struct sk_buff *skb = alloc_skb(length+16, gfp_mask);
- if (skb)
- skb_reserve(skb,16);
- return skb;
-}
-#else
-extern struct sk_buff *__dev_alloc_skb(unsigned int length, int gfp_mask);
-#endif
-
-/**
- * dev_alloc_skb - allocate an skbuff for sending
- * @length: length to allocate
- *
- * Allocate a new &sk_buff and assign it a usage count of one. The
- * buffer has unspecified headroom built in. Users should allocate
- * the headroom they think they need without accounting for the
- * built in space. The built in space is used for optimisations.
- *
- * %NULL is returned in there is no free memory. Although this function
- * allocates memory it can be called from an interrupt.
- */
-
-static inline struct sk_buff *dev_alloc_skb(unsigned int length)
-{
- return __dev_alloc_skb(length, GFP_ATOMIC);
-}
-
-/**
- * skb_cow - copy header of skb when it is required
- * @skb: buffer to cow
- * @headroom: needed headroom
- *
- * If the skb passed lacks sufficient headroom or its data part
- * is shared, data is reallocated. If reallocation fails, an error
- * is returned and original skb is not changed.
- *
- * The result is skb with writable area skb->head...skb->tail
- * and at least @headroom of space at head.
- */
-
-static inline int
-skb_cow(struct sk_buff *skb, unsigned int headroom)
-{
- int delta = (headroom > 16 ? headroom : 16) - skb_headroom(skb);
-
- if (delta < 0)
- delta = 0;
-
- if (delta || skb_cloned(skb))
- return pskb_expand_head(skb, (delta+15)&~15, 0, GFP_ATOMIC);
- return 0;
-}
-
-/**
- * skb_padto - pad an skbuff up to a minimal size
- * @skb: buffer to pad
- * @len: minimal length
- *
- * Pads up a buffer to ensure the trailing bytes exist and are
- * blanked. If the buffer already contains sufficient data it
- * is untouched. Returns the buffer, which may be a replacement
- * for the original, or NULL for out of memory - in which case
- * the original buffer is still freed.
- */
-
-static inline struct sk_buff *skb_padto(struct sk_buff *skb, unsigned int len)
-{
- unsigned int size = skb->len;
- if(likely(size >= len))
- return skb;
- return skb_pad(skb, len-size);
-}
-
-/**
- * skb_linearize - convert paged skb to linear one
- * @skb: buffer to linarize
- * @gfp: allocation mode
- *
- * If there is no free memory -ENOMEM is returned, otherwise zero
- * is returned and the old skb data released. */
-int skb_linearize(struct sk_buff *skb, int gfp);
-
-static inline void *kmap_skb_frag(const skb_frag_t *frag)
-{
-#ifdef CONFIG_HIGHMEM
- if (in_irq())
- out_of_line_bug();
-
- local_bh_disable();
-#endif
- return kmap_atomic(frag->page, KM_SKB_DATA_SOFTIRQ);
-}
-
-static inline void kunmap_skb_frag(void *vaddr)
-{
- kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ);
-#ifdef CONFIG_HIGHMEM
- local_bh_enable();
-#endif
-}
-
-#define skb_queue_walk(queue, skb) \
- for (skb = (queue)->next; \
- (skb != (struct sk_buff *)(queue)); \
- skb=skb->next)
-
-
-extern struct sk_buff * skb_recv_datagram(struct sock
*sk,unsigned flags,int noblock, int *err);
-extern unsigned int datagram_poll(struct file *file, struct socket
*sock, struct poll_table_struct *wait);
-extern int skb_copy_datagram(const struct sk_buff *from,
int offset, char *to,int size);
-extern int skb_copy_datagram_iovec(const struct sk_buff
*from, int offset, struct iovec *to,int size);
-extern int skb_copy_and_csum_datagram(const struct sk_buff
*skb, int offset, u8 *to, int len, unsigned int *csump);
-extern int skb_copy_and_csum_datagram_iovec(const struct
sk_buff *skb, int hlen, struct iovec *iov);
-extern void skb_free_datagram(struct sock * sk, struct
sk_buff *skb);
-
-extern unsigned int skb_checksum(const struct sk_buff *skb, int
offset, int len, unsigned int csum);
-extern int skb_copy_bits(const struct sk_buff *skb, int
offset, void *to, int len);
-extern unsigned int skb_copy_and_csum_bits(const struct sk_buff
*skb, int offset, u8 *to, int len, unsigned int csum);
-extern void skb_copy_and_csum_dev(const struct sk_buff
*skb, u8 *to);
-
-extern void skb_init(void);
-extern void skb_add_mtu(int mtu);
-
-#ifdef CONFIG_NETFILTER
-static inline void
-nf_conntrack_put(struct nf_ct_info *nfct)
-{
- if (nfct && atomic_dec_and_test(&nfct->master->use))
- nfct->master->destroy(nfct->master);
-}
-static inline void
-nf_conntrack_get(struct nf_ct_info *nfct)
-{
- if (nfct)
- atomic_inc(&nfct->master->use);
-}
-static inline void
-nf_reset(struct sk_buff *skb)
-{
- nf_conntrack_put(skb->nfct);
- skb->nfct = NULL;
-#ifdef CONFIG_NETFILTER_DEBUG
- skb->nf_debug = 0;
-#endif
-}
-#else /* CONFIG_NETFILTER */
-static inline void nf_reset(struct sk_buff *skb) {}
-#endif /* CONFIG_NETFILTER */
-
-#endif /* __KERNEL__ */
-#endif /* _LINUX_SKBUFF_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.4.30-xen-sparse/include/linux/timer.h
--- a/linux-2.4.30-xen-sparse/include/linux/timer.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,77 +0,0 @@
-#ifndef _LINUX_TIMER_H
-#define _LINUX_TIMER_H
-
-#include <linux/config.h>
-#include <linux/list.h>
-
-/*
- * In Linux 2.4, static timers have been removed from the kernel.
- * Timers may be dynamically created and destroyed, and should be initialized
- * by a call to init_timer() upon creation.
- *
- * The "data" field enables use of a common timeout function for several
- * timeouts. You can use this field to distinguish between the different
- * invocations.
- */
-struct timer_list {
- struct list_head list;
- unsigned long expires;
- unsigned long data;
- void (*function)(unsigned long);
-};
-
-extern void add_timer(struct timer_list * timer);
-extern int del_timer(struct timer_list * timer);
-#ifdef CONFIG_NO_IDLE_HZ
-extern struct timer_list *next_timer_event(void);
-#endif
-
-#ifdef CONFIG_SMP
-extern int del_timer_sync(struct timer_list * timer);
-extern void sync_timers(void);
-#else
-#define del_timer_sync(t) del_timer(t)
-#define sync_timers() do { } while (0)
-#endif
-
-/*
- * mod_timer is a more efficient way to update the expire field of an
- * active timer (if the timer is inactive it will be activated)
- * mod_timer(a,b) is equivalent to del_timer(a); a->expires = b; add_timer(a).
- * If the timer is known to be not pending (ie, in the handler), mod_timer
- * is less efficient than a->expires = b; add_timer(a).
- */
-int mod_timer(struct timer_list *timer, unsigned long expires);
-
-extern void it_real_fn(unsigned long);
-
-static inline void init_timer(struct timer_list * timer)
-{
- timer->list.next = timer->list.prev = NULL;
-}
-
-static inline int timer_pending (const struct timer_list * timer)
-{
- return timer->list.next != NULL;
-}
-
-/*
- * These inlines deal with timer wrapping correctly. You are
- * strongly encouraged to use them
- * 1. Because people otherwise forget
- * 2. Because if the timer wrap changes in future you wont have to
- * alter your driver code.
- *
- * time_after(a,b) returns true if the time a is after time b.
- *
- * Do this with "<0" and ">=0" to only test the sign of the result. A
- * good compiler would generate better code (and a really good compiler
- * wouldn't care). Gcc is currently neither.
- */
-#define time_after(a,b) ((long)(b) - (long)(a) < 0)
-#define time_before(a,b) time_after(b,a)
-
-#define time_after_eq(a,b) ((long)(a) - (long)(b) >= 0)
-#define time_before_eq(a,b) time_after_eq(b,a)
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.4.30-xen-sparse/kernel/time.c
--- a/linux-2.4.30-xen-sparse/kernel/time.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,415 +0,0 @@
-/*
- * linux/kernel/time.c
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- *
- * This file contains the interface functions for the various
- * time related system calls: time, stime, gettimeofday, settimeofday,
- * adjtime
- */
-/*
- * Modification history kernel/time.c
- *
- * 1993-09-02 Philip Gladstone
- * Created file with time related functions from sched.c and adjtimex()
- * 1993-10-08 Torsten Duwe
- * adjtime interface update and CMOS clock write code
- * 1995-08-13 Torsten Duwe
- * kernel PLL updated to 1994-12-13 specs (rfc-1589)
- * 1999-01-16 Ulrich Windl
- * Introduced error checking for many cases in adjtimex().
- * Updated NTP code according to technical memorandum Jan '96
- * "A Kernel Model for Precision Timekeeping" by Dave Mills
- * Allow time_constant larger than MAXTC(6) for NTP v4 (MAXTC == 10)
- * (Even though the technical memorandum forbids it)
- */
-
-#include <linux/mm.h>
-#include <linux/timex.h>
-#include <linux/smp_lock.h>
-
-#include <asm/uaccess.h>
-
-/*
- * The timezone where the local system is located. Used as a default by some
- * programs who obtain this value by using gettimeofday.
- */
-struct timezone sys_tz;
-
-/* The xtime_lock is not only serializing the xtime read/writes but it's also
- serializing all accesses to the global NTP variables now. */
-extern rwlock_t xtime_lock;
-
-#if !defined(__alpha__) && !defined(__ia64__)
-
-/*
- * sys_time() can be implemented in user-level using
- * sys_gettimeofday(). Is this for backwards compatibility? If so,
- * why not move it into the appropriate arch directory (for those
- * architectures that need it).
- *
- * XXX This function is NOT 64-bit clean!
- */
-asmlinkage long sys_time(int * tloc)
-{
- struct timeval now;
- int i;
-
- do_gettimeofday(&now);
- i = now.tv_sec;
- if (tloc) {
- if (put_user(i,tloc))
- i = -EFAULT;
- }
- return i;
-}
-
-#if !defined(CONFIG_XEN)
-
-/*
- * sys_stime() can be implemented in user-level using
- * sys_settimeofday(). Is this for backwards compatibility? If so,
- * why not move it into the appropriate arch directory (for those
- * architectures that need it).
- */
-
-asmlinkage long sys_stime(int * tptr)
-{
- int value;
-
- if (!capable(CAP_SYS_TIME))
- return -EPERM;
- if (get_user(value, tptr))
- return -EFAULT;
- write_lock_irq(&xtime_lock);
- vxtime_lock();
- xtime.tv_sec = value;
- xtime.tv_usec = 0;
- vxtime_unlock();
- time_adjust = 0; /* stop active adjtime() */
- time_status |= STA_UNSYNC;
- time_maxerror = NTP_PHASE_LIMIT;
- time_esterror = NTP_PHASE_LIMIT;
- write_unlock_irq(&xtime_lock);
- return 0;
-}
-
-#endif
-
-#endif
-
-asmlinkage long sys_gettimeofday(struct timeval *tv, struct timezone *tz)
-{
- if (tv) {
- struct timeval ktv;
- do_gettimeofday(&ktv);
- if (copy_to_user(tv, &ktv, sizeof(ktv)))
- return -EFAULT;
- }
- if (tz) {
- if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
- return -EFAULT;
- }
- return 0;
-}
-
-/*
- * Adjust the time obtained from the CMOS to be UTC time instead of
- * local time.
- *
- * This is ugly, but preferable to the alternatives. Otherwise we
- * would either need to write a program to do it in /etc/rc (and risk
- * confusion if the program gets run more than once; it would also be
- * hard to make the program warp the clock precisely n hours) or
- * compile in the timezone information into the kernel. Bad, bad....
- *
- * - TYT, 1992-01-01
- *
- * The best thing to do is to keep the CMOS clock in universal time (UTC)
- * as real UNIX machines always do it. This avoids all headaches about
- * daylight saving times and warping kernel clocks.
- */
-inline static void warp_clock(void)
-{
- write_lock_irq(&xtime_lock);
- vxtime_lock();
- xtime.tv_sec += sys_tz.tz_minuteswest * 60;
- vxtime_unlock();
- write_unlock_irq(&xtime_lock);
-}
-
-/*
- * In case for some reason the CMOS clock has not already been running
- * in UTC, but in some local time: The first time we set the timezone,
- * we will warp the clock so that it is ticking UTC time instead of
- * local time. Presumably, if someone is setting the timezone then we
- * are running in an environment where the programs understand about
- * timezones. This should be done at boot time in the /etc/rc script,
- * as soon as possible, so that the clock can be set right. Otherwise,
- * various programs will get confused when the clock gets warped.
- */
-
-int do_sys_settimeofday(struct timeval *tv, struct timezone *tz)
-{
- static int firsttime = 1;
-
- if (!capable(CAP_SYS_TIME))
- return -EPERM;
-
- if (tz) {
- /* SMP safe, global irq locking makes it work. */
- sys_tz = *tz;
- if (firsttime) {
- firsttime = 0;
- if (!tv)
- warp_clock();
- }
- }
- if (tv)
- {
- /* SMP safe, again the code in arch/foo/time.c should
- * globally block out interrupts when it runs.
- */
- do_settimeofday(tv);
- }
- return 0;
-}
-
-asmlinkage long sys_settimeofday(struct timeval *tv, struct timezone *tz)
-{
- struct timeval new_tv;
- struct timezone new_tz;
-
- if (tv) {
- if (copy_from_user(&new_tv, tv, sizeof(*tv)))
- return -EFAULT;
- }
- if (tz) {
- if (copy_from_user(&new_tz, tz, sizeof(*tz)))
- return -EFAULT;
- }
-
- return do_sys_settimeofday(tv ? &new_tv : NULL, tz ? &new_tz : NULL);
-}
-
-long pps_offset; /* pps time offset (us) */
-long pps_jitter = MAXTIME; /* time dispersion (jitter) (us) */
-
-long pps_freq; /* frequency offset (scaled ppm) */
-long pps_stabil = MAXFREQ; /* frequency dispersion (scaled ppm) */
-
-long pps_valid = PPS_VALID; /* pps signal watchdog counter */
-
-int pps_shift = PPS_SHIFT; /* interval duration (s) (shift) */
-
-long pps_jitcnt; /* jitter limit exceeded */
-long pps_calcnt; /* calibration intervals */
-long pps_errcnt; /* calibration errors */
-long pps_stbcnt; /* stability limit exceeded */
-
-/* hook for a loadable hardpps kernel module */
-void (*hardpps_ptr)(struct timeval *);
-
-/* adjtimex mainly allows reading (and writing, if superuser) of
- * kernel time-keeping variables. used by xntpd.
- */
-int do_adjtimex(struct timex *txc)
-{
- long ltemp, mtemp, save_adjust;
- int result;
-
- /* In order to modify anything, you gotta be super-user! */
- if (txc->modes && !capable(CAP_SYS_TIME))
- return -EPERM;
-
- /* Now we validate the data before disabling interrupts */
-
- if ((txc->modes & ADJ_OFFSET_SINGLESHOT) == ADJ_OFFSET_SINGLESHOT)
- /* singleshot must not be used with any other mode bits */
- if (txc->modes != ADJ_OFFSET_SINGLESHOT)
- return -EINVAL;
-
- if (txc->modes != ADJ_OFFSET_SINGLESHOT && (txc->modes & ADJ_OFFSET))
- /* adjustment Offset limited to +- .512 seconds */
- if (txc->offset <= - MAXPHASE || txc->offset >= MAXPHASE )
- return -EINVAL;
-
- /* if the quartz is off by more than 10% something is VERY wrong ! */
- if (txc->modes & ADJ_TICK)
- if (txc->tick < 900000/HZ || txc->tick > 1100000/HZ)
- return -EINVAL;
-
- write_lock_irq(&xtime_lock);
- result = time_state; /* mostly `TIME_OK' */
-
- /* Save for later - semantics of adjtime is to return old value */
- save_adjust = time_adjust;
-
-#if 0 /* STA_CLOCKERR is never set yet */
- time_status &= ~STA_CLOCKERR; /* reset STA_CLOCKERR */
-#endif
- /* If there are input parameters, then process them */
- if (txc->modes)
- {
- if (txc->modes & ADJ_STATUS) /* only set allowed bits */
- time_status = (txc->status & ~STA_RONLY) |
- (time_status & STA_RONLY);
-
- if (txc->modes & ADJ_FREQUENCY) { /* p. 22 */
- if (txc->freq > MAXFREQ || txc->freq < -MAXFREQ) {
- result = -EINVAL;
- goto leave;
- }
- time_freq = txc->freq - pps_freq;
- }
-
- if (txc->modes & ADJ_MAXERROR) {
- if (txc->maxerror < 0 || txc->maxerror >= NTP_PHASE_LIMIT) {
- result = -EINVAL;
- goto leave;
- }
- time_maxerror = txc->maxerror;
- }
-
- if (txc->modes & ADJ_ESTERROR) {
- if (txc->esterror < 0 || txc->esterror >= NTP_PHASE_LIMIT) {
- result = -EINVAL;
- goto leave;
- }
- time_esterror = txc->esterror;
- }
-
- if (txc->modes & ADJ_TIMECONST) { /* p. 24 */
- if (txc->constant < 0) { /* NTP v4 uses values > 6 */
- result = -EINVAL;
- goto leave;
- }
- time_constant = txc->constant;
- }
-
- if (txc->modes & ADJ_OFFSET) { /* values checked earlier */
- if (txc->modes == ADJ_OFFSET_SINGLESHOT) {
- /* adjtime() is independent from ntp_adjtime() */
- time_adjust = txc->offset;
- }
- else if ( time_status & (STA_PLL | STA_PPSTIME) ) {
- ltemp = (time_status & (STA_PPSTIME | STA_PPSSIGNAL)) ==
- (STA_PPSTIME | STA_PPSSIGNAL) ?
- pps_offset : txc->offset;
-
- /*
- * Scale the phase adjustment and
- * clamp to the operating range.
- */
- if (ltemp > MAXPHASE)
- time_offset = MAXPHASE << SHIFT_UPDATE;
- else if (ltemp < -MAXPHASE)
- time_offset = -(MAXPHASE << SHIFT_UPDATE);
- else
- time_offset = ltemp << SHIFT_UPDATE;
-
- /*
- * Select whether the frequency is to be controlled
- * and in which mode (PLL or FLL). Clamp to the operating
- * range. Ugly multiply/divide should be replaced someday.
- */
-
- if (time_status & STA_FREQHOLD || time_reftime == 0)
- time_reftime = xtime.tv_sec;
- mtemp = xtime.tv_sec - time_reftime;
- time_reftime = xtime.tv_sec;
- if (time_status & STA_FLL) {
- if (mtemp >= MINSEC) {
- ltemp = (time_offset / mtemp) << (SHIFT_USEC -
- SHIFT_UPDATE);
- if (ltemp < 0)
- time_freq -= -ltemp >> SHIFT_KH;
- else
- time_freq += ltemp >> SHIFT_KH;
- } else /* calibration interval too short (p. 12) */
- result = TIME_ERROR;
- } else { /* PLL mode */
- if (mtemp < MAXSEC) {
- ltemp *= mtemp;
- if (ltemp < 0)
- time_freq -= -ltemp >> (time_constant +
- time_constant +
- SHIFT_KF - SHIFT_USEC);
- else
- time_freq += ltemp >> (time_constant +
- time_constant +
- SHIFT_KF - SHIFT_USEC);
- } else /* calibration interval too long (p. 12) */
- result = TIME_ERROR;
- }
- if (time_freq > time_tolerance)
- time_freq = time_tolerance;
- else if (time_freq < -time_tolerance)
- time_freq = -time_tolerance;
- } /* STA_PLL || STA_PPSTIME */
- } /* txc->modes & ADJ_OFFSET */
- if (txc->modes & ADJ_TICK) {
- /* if the quartz is off by more than 10% something is
- VERY wrong ! */
- if (txc->tick < 900000/HZ || txc->tick > 1100000/HZ) {
- result = -EINVAL;
- goto leave;
- }
- tick = txc->tick;
- }
- } /* txc->modes */
-leave: if ((time_status & (STA_UNSYNC|STA_CLOCKERR)) != 0
- || ((time_status & (STA_PPSFREQ|STA_PPSTIME)) != 0
- && (time_status & STA_PPSSIGNAL) == 0)
- /* p. 24, (b) */
- || ((time_status & (STA_PPSTIME|STA_PPSJITTER))
- == (STA_PPSTIME|STA_PPSJITTER))
- /* p. 24, (c) */
- || ((time_status & STA_PPSFREQ) != 0
- && (time_status & (STA_PPSWANDER|STA_PPSERROR)) != 0))
- /* p. 24, (d) */
- result = TIME_ERROR;
-
- if ((txc->modes & ADJ_OFFSET_SINGLESHOT) == ADJ_OFFSET_SINGLESHOT)
- txc->offset = save_adjust;
- else {
- if (time_offset < 0)
- txc->offset = -(-time_offset >> SHIFT_UPDATE);
- else
- txc->offset = time_offset >> SHIFT_UPDATE;
- }
- txc->freq = time_freq + pps_freq;
- txc->maxerror = time_maxerror;
- txc->esterror = time_esterror;
- txc->status = time_status;
- txc->constant = time_constant;
- txc->precision = time_precision;
- txc->tolerance = time_tolerance;
- txc->tick = tick;
- txc->ppsfreq = pps_freq;
- txc->jitter = pps_jitter >> PPS_AVG;
- txc->shift = pps_shift;
- txc->stabil = pps_stabil;
- txc->jitcnt = pps_jitcnt;
- txc->calcnt = pps_calcnt;
- txc->errcnt = pps_errcnt;
- txc->stbcnt = pps_stbcnt;
- write_unlock_irq(&xtime_lock);
- do_gettimeofday(&txc->time);
- return(result);
-}
-
-asmlinkage long sys_adjtimex(struct timex *txc_p)
-{
- struct timex txc; /* Local copy of parameter */
- int ret;
-
- /* Copy the user data space into the kernel copy
- * structure. But bear in mind that the structures
- * may change
- */
- if(copy_from_user(&txc, txc_p, sizeof(struct timex)))
- return -EFAULT;
- ret = do_adjtimex(&txc);
- return copy_to_user(txc_p, &txc, sizeof(struct timex)) ? -EFAULT : ret;
-}
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.4.30-xen-sparse/kernel/timer.c
--- a/linux-2.4.30-xen-sparse/kernel/timer.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,968 +0,0 @@
-/*
- * linux/kernel/timer.c
- *
- * Kernel internal timers, kernel timekeeping, basic process system calls
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- *
- * 1997-01-28 Modified by Finn Arne Gangstad to make timers scale better.
- *
- * 1997-09-10 Updated NTP code according to technical memorandum Jan '96
- * "A Kernel Model for Precision Timekeeping" by Dave Mills
- * 1998-12-24 Fixed a xtime SMP race (we need the xtime_lock rw spinlock to
- * serialize accesses to xtime/lost_ticks).
- * Copyright (C) 1998 Andrea Arcangeli
- * 1999-03-10 Improved NTP compatibility by Ulrich Windl
- */
-
-#include <linux/config.h>
-#include <linux/mm.h>
-#include <linux/timex.h>
-#include <linux/delay.h>
-#include <linux/smp_lock.h>
-#include <linux/interrupt.h>
-#include <linux/kernel_stat.h>
-
-#include <asm/uaccess.h>
-
-/*
- * Timekeeping variables
- */
-
-long tick = (1000000 + HZ/2) / HZ; /* timer interrupt period */
-
-/* The current time */
-struct timeval xtime __attribute__ ((aligned (16)));
-
-/* Don't completely fail for HZ > 500. */
-int tickadj = 500/HZ ? : 1; /* microsecs */
-
-DECLARE_TASK_QUEUE(tq_timer);
-DECLARE_TASK_QUEUE(tq_immediate);
-
-/*
- * phase-lock loop variables
- */
-/* TIME_ERROR prevents overwriting the CMOS clock */
-int time_state = TIME_OK; /* clock synchronization status */
-int time_status = STA_UNSYNC; /* clock status bits */
-long time_offset; /* time adjustment (us) */
-long time_constant = 2; /* pll time constant
*/
-long time_tolerance = MAXFREQ; /* frequency tolerance (ppm) */
-long time_precision = 1; /* clock precision (us) */
-long time_maxerror = NTP_PHASE_LIMIT; /* maximum error (us) */
-long time_esterror = NTP_PHASE_LIMIT; /* estimated error (us) */
-long time_phase; /* phase offset (scaled us) */
-long time_freq = ((1000000 + HZ/2) % HZ - HZ/2) << SHIFT_USEC;
- /* frequency offset (scaled ppm)*/
-long time_adj; /* tick adjust (scaled 1 / HZ) */
-long time_reftime; /* time at last adjustment (s) */
-
-long time_adjust;
-long time_adjust_step;
-
-unsigned long event;
-
-extern int do_setitimer(int, struct itimerval *, struct itimerval *);
-
-unsigned long volatile jiffies;
-
-unsigned int * prof_buffer;
-unsigned long prof_len;
-unsigned long prof_shift;
-
-/*
- * Event timer code
- */
-#define TVN_BITS 6
-#define TVR_BITS 8
-#define TVN_SIZE (1 << TVN_BITS)
-#define TVR_SIZE (1 << TVR_BITS)
-#define TVN_MASK (TVN_SIZE - 1)
-#define TVR_MASK (TVR_SIZE - 1)
-
-struct timer_vec {
- int index;
- struct list_head vec[TVN_SIZE];
-};
-
-struct timer_vec_root {
- int index;
- struct list_head vec[TVR_SIZE];
-};
-
-static struct timer_vec tv5;
-static struct timer_vec tv4;
-static struct timer_vec tv3;
-static struct timer_vec tv2;
-static struct timer_vec_root tv1;
-
-static struct timer_vec * const tvecs[] = {
- (struct timer_vec *)&tv1, &tv2, &tv3, &tv4, &tv5
-};
-
-static struct list_head * run_timer_list_running;
-
-#define NOOF_TVECS (sizeof(tvecs) / sizeof(tvecs[0]))
-
-void init_timervecs (void)
-{
- int i;
-
- for (i = 0; i < TVN_SIZE; i++) {
- INIT_LIST_HEAD(tv5.vec + i);
- INIT_LIST_HEAD(tv4.vec + i);
- INIT_LIST_HEAD(tv3.vec + i);
- INIT_LIST_HEAD(tv2.vec + i);
- }
- for (i = 0; i < TVR_SIZE; i++)
- INIT_LIST_HEAD(tv1.vec + i);
-}
-
-static unsigned long timer_jiffies;
-
-static inline void internal_add_timer(struct timer_list *timer)
-{
- /*
- * must be cli-ed when calling this
- */
- unsigned long expires = timer->expires;
- unsigned long idx = expires - timer_jiffies;
- struct list_head * vec;
-
- if (run_timer_list_running)
- vec = run_timer_list_running;
- else if (idx < TVR_SIZE) {
- int i = expires & TVR_MASK;
- vec = tv1.vec + i;
- } else if (idx < 1 << (TVR_BITS + TVN_BITS)) {
- int i = (expires >> TVR_BITS) & TVN_MASK;
- vec = tv2.vec + i;
- } else if (idx < 1 << (TVR_BITS + 2 * TVN_BITS)) {
- int i = (expires >> (TVR_BITS + TVN_BITS)) & TVN_MASK;
- vec = tv3.vec + i;
- } else if (idx < 1 << (TVR_BITS + 3 * TVN_BITS)) {
- int i = (expires >> (TVR_BITS + 2 * TVN_BITS)) & TVN_MASK;
- vec = tv4.vec + i;
- } else if ((signed long) idx < 0) {
- /* can happen if you add a timer with expires == jiffies,
- * or you set a timer to go off in the past
- */
- vec = tv1.vec + tv1.index;
- } else if (idx <= 0xffffffffUL) {
- int i = (expires >> (TVR_BITS + 3 * TVN_BITS)) & TVN_MASK;
- vec = tv5.vec + i;
- } else {
- /* Can only get here on architectures with 64-bit jiffies */
- INIT_LIST_HEAD(&timer->list);
- return;
- }
- /*
- * Timers are FIFO!
- */
- list_add(&timer->list, vec->prev);
-}
-
-/* Initialize both explicitly - let's try to have them in the same cache line
*/
-spinlock_t timerlist_lock = SPIN_LOCK_UNLOCKED;
-
-#ifdef CONFIG_SMP
-volatile struct timer_list * volatile running_timer;
-#define timer_enter(t) do { running_timer = t; mb(); } while (0)
-#define timer_exit() do { running_timer = NULL; } while (0)
-#define timer_is_running(t) (running_timer == t)
-#define timer_synchronize(t) while (timer_is_running(t)) barrier()
-#else
-#define timer_enter(t) do { } while (0)
-#define timer_exit() do { } while (0)
-#endif
-
-void add_timer(struct timer_list *timer)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&timerlist_lock, flags);
- if (timer_pending(timer))
- goto bug;
- internal_add_timer(timer);
- spin_unlock_irqrestore(&timerlist_lock, flags);
- return;
-bug:
- spin_unlock_irqrestore(&timerlist_lock, flags);
- printk("bug: kernel timer added twice at %p.\n",
- __builtin_return_address(0));
-}
-
-static inline int detach_timer (struct timer_list *timer)
-{
- if (!timer_pending(timer))
- return 0;
- list_del(&timer->list);
- return 1;
-}
-
-int mod_timer(struct timer_list *timer, unsigned long expires)
-{
- int ret;
- unsigned long flags;
-
- spin_lock_irqsave(&timerlist_lock, flags);
- timer->expires = expires;
- ret = detach_timer(timer);
- internal_add_timer(timer);
- spin_unlock_irqrestore(&timerlist_lock, flags);
- return ret;
-}
-
-int del_timer(struct timer_list * timer)
-{
- int ret;
- unsigned long flags;
-
- spin_lock_irqsave(&timerlist_lock, flags);
- ret = detach_timer(timer);
- timer->list.next = timer->list.prev = NULL;
- spin_unlock_irqrestore(&timerlist_lock, flags);
- return ret;
-}
-
-#ifdef CONFIG_SMP
-void sync_timers(void)
-{
- spin_unlock_wait(&global_bh_lock);
-}
-
-/*
- * SMP specific function to delete periodic timer.
- * Caller must disable by some means restarting the timer
- * for new. Upon exit the timer is not queued and handler is not running
- * on any CPU. It returns number of times, which timer was deleted
- * (for reference counting).
- */
-
-int del_timer_sync(struct timer_list * timer)
-{
- int ret = 0;
-
- for (;;) {
- unsigned long flags;
- int running;
-
- spin_lock_irqsave(&timerlist_lock, flags);
- ret += detach_timer(timer);
- timer->list.next = timer->list.prev = 0;
- running = timer_is_running(timer);
- spin_unlock_irqrestore(&timerlist_lock, flags);
-
- if (!running)
- break;
-
- timer_synchronize(timer);
- }
-
- return ret;
-}
-#endif
-
-
-static inline void cascade_timers(struct timer_vec *tv)
-{
- /* cascade all the timers from tv up one level */
- struct list_head *head, *curr, *next;
-
- head = tv->vec + tv->index;
- curr = head->next;
- /*
- * We are removing _all_ timers from the list, so we don't have to
- * detach them individually, just clear the list afterwards.
- */
- while (curr != head) {
- struct timer_list *tmp;
-
- tmp = list_entry(curr, struct timer_list, list);
- next = curr->next;
- list_del(curr); // not needed
- internal_add_timer(tmp);
- curr = next;
- }
- INIT_LIST_HEAD(head);
- tv->index = (tv->index + 1) & TVN_MASK;
-}
-
-static inline void run_timer_list(void)
-{
- spin_lock_irq(&timerlist_lock);
- while ((long)(jiffies - timer_jiffies) >= 0) {
- LIST_HEAD(queued);
- struct list_head *head, *curr;
- if (!tv1.index) {
- int n = 1;
- do {
- cascade_timers(tvecs[n]);
- } while (tvecs[n]->index == 1 && ++n < NOOF_TVECS);
- }
- run_timer_list_running = &queued;
-repeat:
- head = tv1.vec + tv1.index;
- curr = head->next;
- if (curr != head) {
- struct timer_list *timer;
- void (*fn)(unsigned long);
- unsigned long data;
-
- timer = list_entry(curr, struct timer_list, list);
- fn = timer->function;
- data= timer->data;
-
- detach_timer(timer);
- timer->list.next = timer->list.prev = NULL;
- timer_enter(timer);
- spin_unlock_irq(&timerlist_lock);
- fn(data);
- spin_lock_irq(&timerlist_lock);
- timer_exit();
- goto repeat;
- }
- run_timer_list_running = NULL;
- ++timer_jiffies;
- tv1.index = (tv1.index + 1) & TVR_MASK;
-
- curr = queued.next;
- while (curr != &queued) {
- struct timer_list *timer;
-
- timer = list_entry(curr, struct timer_list, list);
- curr = curr->next;
- internal_add_timer(timer);
- }
- }
- spin_unlock_irq(&timerlist_lock);
-}
-
-#ifdef CONFIG_NO_IDLE_HZ
-/*
- * Find out when the next timer event is due to happen. This
- * is used on S/390 to stop all activity when all cpus are idle.
- * And in XenoLinux to achieve the same.
- * The timerlist_lock must be acquired before calling this function.
- */
-struct timer_list *next_timer_event(void)
-{
- struct timer_list *nte, *tmp;
- struct list_head *lst;
- int i, j;
-
- /* Look for the next timer event in tv1. */
- i = 0;
- j = tvecs[0]->index;
- do {
- struct list_head *head = tvecs[0]->vec + j;
- if (!list_empty(head)) {
- nte = list_entry(head->next, struct timer_list, list);
- goto found;
- }
- j = (j + 1) & TVR_MASK;
- } while (j != tv1.index);
-
- /* No event found in tv1. Check tv2-tv5. */
- for (i = 1; i < NOOF_TVECS; i++) {
- j = tvecs[i]->index;
- do {
- nte = NULL;
- list_for_each(lst, tvecs[i]->vec + j) {
- tmp = list_entry(lst, struct timer_list, list);
- if (nte == NULL ||
- time_before(tmp->expires, nte->expires))
- nte = tmp;
- }
- if (nte)
- goto found;
- j = (j + 1) & TVN_MASK;
- } while (j != tvecs[i]->index);
- }
- return NULL;
-found:
- /* Found timer event in tvecs[i]->vec[j] */
- if (j < tvecs[i]->index && i < NOOF_TVECS-1) {
- /*
- * The search wrapped. We need to look at the next list
- * from tvecs[i+1] that would cascade into tvecs[i].
- */
- list_for_each(lst, tvecs[i+1]->vec+tvecs[i+1]->index) {
- tmp = list_entry(lst, struct timer_list, list);
- if (time_before(tmp->expires, nte->expires))
- nte = tmp;
- }
- }
- return nte;
-}
-#endif
-
-spinlock_t tqueue_lock = SPIN_LOCK_UNLOCKED;
-
-void tqueue_bh(void)
-{
- run_task_queue(&tq_timer);
-}
-
-void immediate_bh(void)
-{
- run_task_queue(&tq_immediate);
-}
-
-/*
- * this routine handles the overflow of the microsecond field
- *
- * The tricky bits of code to handle the accurate clock support
- * were provided by Dave Mills (Mills@xxxxxxxx) of NTP fame.
- * They were originally developed for SUN and DEC kernels.
- * All the kudos should go to Dave for this stuff.
- *
- */
-static void second_overflow(void)
-{
- long ltemp;
-
- /* Bump the maxerror field */
- time_maxerror += time_tolerance >> SHIFT_USEC;
- if ( time_maxerror > NTP_PHASE_LIMIT ) {
- time_maxerror = NTP_PHASE_LIMIT;
- time_status |= STA_UNSYNC;
- }
-
- /*
- * Leap second processing. If in leap-insert state at
- * the end of the day, the system clock is set back one
- * second; if in leap-delete state, the system clock is
- * set ahead one second. The microtime() routine or
- * external clock driver will insure that reported time
- * is always monotonic. The ugly divides should be
- * replaced.
- */
- switch (time_state) {
-
- case TIME_OK:
- if (time_status & STA_INS)
- time_state = TIME_INS;
- else if (time_status & STA_DEL)
- time_state = TIME_DEL;
- break;
-
- case TIME_INS:
- if (xtime.tv_sec % 86400 == 0) {
- xtime.tv_sec--;
- time_state = TIME_OOP;
- printk(KERN_NOTICE "Clock: inserting leap second 23:59:60 UTC\n");
- }
- break;
-
- case TIME_DEL:
- if ((xtime.tv_sec + 1) % 86400 == 0) {
- xtime.tv_sec++;
- time_state = TIME_WAIT;
- printk(KERN_NOTICE "Clock: deleting leap second 23:59:59 UTC\n");
- }
- break;
-
- case TIME_OOP:
- time_state = TIME_WAIT;
- break;
-
- case TIME_WAIT:
- if (!(time_status & (STA_INS | STA_DEL)))
- time_state = TIME_OK;
- }
-
- /*
- * Compute the phase adjustment for the next second. In
- * PLL mode, the offset is reduced by a fixed factor
- * times the time constant. In FLL mode the offset is
- * used directly. In either mode, the maximum phase
- * adjustment for each second is clamped so as to spread
- * the adjustment over not more than the number of
- * seconds between updates.
- */
- if (time_offset < 0) {
- ltemp = -time_offset;
- if (!(time_status & STA_FLL))
- ltemp >>= SHIFT_KG + time_constant;
- if (ltemp > (MAXPHASE / MINSEC) << SHIFT_UPDATE)
- ltemp = (MAXPHASE / MINSEC) << SHIFT_UPDATE;
- time_offset += ltemp;
- time_adj = -ltemp << (SHIFT_SCALE - SHIFT_HZ - SHIFT_UPDATE);
- } else {
- ltemp = time_offset;
- if (!(time_status & STA_FLL))
- ltemp >>= SHIFT_KG + time_constant;
- if (ltemp > (MAXPHASE / MINSEC) << SHIFT_UPDATE)
- ltemp = (MAXPHASE / MINSEC) << SHIFT_UPDATE;
- time_offset -= ltemp;
- time_adj = ltemp << (SHIFT_SCALE - SHIFT_HZ - SHIFT_UPDATE);
- }
-
- /*
- * Compute the frequency estimate and additional phase
- * adjustment due to frequency error for the next
- * second. When the PPS signal is engaged, gnaw on the
- * watchdog counter and update the frequency computed by
- * the pll and the PPS signal.
- */
- pps_valid++;
- if (pps_valid == PPS_VALID) { /* PPS signal lost */
- pps_jitter = MAXTIME;
- pps_stabil = MAXFREQ;
- time_status &= ~(STA_PPSSIGNAL | STA_PPSJITTER |
- STA_PPSWANDER | STA_PPSERROR);
- }
- ltemp = time_freq + pps_freq;
- if (ltemp < 0)
- time_adj -= -ltemp >>
- (SHIFT_USEC + SHIFT_HZ - SHIFT_SCALE);
- else
- time_adj += ltemp >>
- (SHIFT_USEC + SHIFT_HZ - SHIFT_SCALE);
-
-#if HZ == 100
- /* Compensate for (HZ==100) != (1 << SHIFT_HZ).
- * Add 25% and 3.125% to get 128.125; => only 0.125% error (p. 14)
- */
- if (time_adj < 0)
- time_adj -= (-time_adj >> 2) + (-time_adj >> 5);
- else
- time_adj += (time_adj >> 2) + (time_adj >> 5);
-#endif
-}
-
-/* in the NTP reference this is called "hardclock()" */
-static void update_wall_time_one_tick(void)
-{
- if ( (time_adjust_step = time_adjust) != 0 ) {
- /* We are doing an adjtime thing.
- *
- * Prepare time_adjust_step to be within bounds.
- * Note that a positive time_adjust means we want the clock
- * to run faster.
- *
- * Limit the amount of the step to be in the range
- * -tickadj .. +tickadj
- */
- if (time_adjust > tickadj)
- time_adjust_step = tickadj;
- else if (time_adjust < -tickadj)
- time_adjust_step = -tickadj;
-
- /* Reduce by this step the amount of time left */
- time_adjust -= time_adjust_step;
- }
- xtime.tv_usec += tick + time_adjust_step;
- /*
- * Advance the phase, once it gets to one microsecond, then
- * advance the tick more.
- */
- time_phase += time_adj;
- if (time_phase <= -FINEUSEC) {
- long ltemp = -time_phase >> SHIFT_SCALE;
- time_phase += ltemp << SHIFT_SCALE;
- xtime.tv_usec -= ltemp;
- }
- else if (time_phase >= FINEUSEC) {
- long ltemp = time_phase >> SHIFT_SCALE;
- time_phase -= ltemp << SHIFT_SCALE;
- xtime.tv_usec += ltemp;
- }
-}
-
-/*
- * Using a loop looks inefficient, but "ticks" is
- * usually just one (we shouldn't be losing ticks,
- * we're doing this this way mainly for interrupt
- * latency reasons, not because we think we'll
- * have lots of lost timer ticks
- */
-static void update_wall_time(unsigned long ticks)
-{
- do {
- ticks--;
- update_wall_time_one_tick();
- } while (ticks);
-
- while (xtime.tv_usec >= 1000000) {
- xtime.tv_usec -= 1000000;
- xtime.tv_sec++;
- second_overflow();
- }
-}
-
-static inline void do_process_times(struct task_struct *p,
- unsigned long user, unsigned long system)
-{
- unsigned long psecs;
-
- psecs = (p->times.tms_utime += user);
- psecs += (p->times.tms_stime += system);
- if (psecs / HZ > p->rlim[RLIMIT_CPU].rlim_cur) {
- /* Send SIGXCPU every second.. */
- if (!(psecs % HZ))
- send_sig(SIGXCPU, p, 1);
- /* and SIGKILL when we go over max.. */
- if (psecs / HZ > p->rlim[RLIMIT_CPU].rlim_max)
- send_sig(SIGKILL, p, 1);
- }
-}
-
-static inline void do_it_virt(struct task_struct * p, unsigned long ticks)
-{
- unsigned long it_virt = p->it_virt_value;
-
- if (it_virt) {
- it_virt -= ticks;
- if (!it_virt) {
- it_virt = p->it_virt_incr;
- send_sig(SIGVTALRM, p, 1);
- }
- p->it_virt_value = it_virt;
- }
-}
-
-static inline void do_it_prof(struct task_struct *p)
-{
- unsigned long it_prof = p->it_prof_value;
-
- if (it_prof) {
- if (--it_prof == 0) {
- it_prof = p->it_prof_incr;
- send_sig(SIGPROF, p, 1);
- }
- p->it_prof_value = it_prof;
- }
-}
-
-void update_one_process(struct task_struct *p, unsigned long user,
- unsigned long system, int cpu)
-{
- p->per_cpu_utime[cpu] += user;
- p->per_cpu_stime[cpu] += system;
- do_process_times(p, user, system);
- do_it_virt(p, user);
- do_it_prof(p);
-}
-
-/*
- * Called from the timer interrupt handler to charge one tick to the current
- * process. user_tick is 1 if the tick is user time, 0 for system.
- */
-void update_process_times(int user_tick)
-{
- struct task_struct *p = current;
- int cpu = smp_processor_id(), system = user_tick ^ 1;
-
- update_one_process(p, user_tick, system, cpu);
- if (p->pid) {
- if (--p->counter <= 0) {
- p->counter = 0;
- /*
- * SCHED_FIFO is priority preemption, so this is
- * not the place to decide whether to reschedule a
- * SCHED_FIFO task or not - Bhavesh Davda
- */
- if (p->policy != SCHED_FIFO) {
- p->need_resched = 1;
- }
- }
- if (p->nice > 0)
- kstat.per_cpu_nice[cpu] += user_tick;
- else
- kstat.per_cpu_user[cpu] += user_tick;
- kstat.per_cpu_system[cpu] += system;
- } else if (local_bh_count(cpu) || local_irq_count(cpu) > 1)
- kstat.per_cpu_system[cpu] += system;
-}
-
-/*
- * Called from the timer interrupt handler to charge a couple of ticks
- * to the current process.
- */
-void update_process_times_us(int user_ticks, int system_ticks)
-{
- struct task_struct *p = current;
- int cpu = smp_processor_id();
-
- update_one_process(p, user_ticks, system_ticks, cpu);
- if (p->pid) {
- p->counter -= user_ticks + system_ticks;
- if (p->counter <= 0) {
- p->counter = 0;
- p->need_resched = 1;
- }
- if (p->nice > 0)
- kstat.per_cpu_nice[cpu] += user_ticks;
- else
- kstat.per_cpu_user[cpu] += user_ticks;
- kstat.per_cpu_system[cpu] += system_ticks;
- } else if (local_bh_count(cpu) || local_irq_count(cpu) > 1)
- kstat.per_cpu_system[cpu] += system_ticks;
-}
-
-/*
- * Nr of active tasks - counted in fixed-point numbers
- */
-static unsigned long count_active_tasks(void)
-{
- struct task_struct *p;
- unsigned long nr = 0;
-
- read_lock(&tasklist_lock);
- for_each_task(p) {
- if ((p->state == TASK_RUNNING ||
- (p->state & TASK_UNINTERRUPTIBLE)))
- nr += FIXED_1;
- }
- read_unlock(&tasklist_lock);
- return nr;
-}
-
-/*
- * Hmm.. Changed this, as the GNU make sources (load.c) seems to
- * imply that avenrun[] is the standard name for this kind of thing.
- * Nothing else seems to be standardized: the fractional size etc
- * all seem to differ on different machines.
- */
-unsigned long avenrun[3];
-
-static inline void calc_load(unsigned long ticks)
-{
- unsigned long active_tasks; /* fixed-point */
- static int count = LOAD_FREQ;
-
- count -= ticks;
- while (count < 0) {
- count += LOAD_FREQ;
- active_tasks = count_active_tasks();
- CALC_LOAD(avenrun[0], EXP_1, active_tasks);
- CALC_LOAD(avenrun[1], EXP_5, active_tasks);
- CALC_LOAD(avenrun[2], EXP_15, active_tasks);
- }
-}
-
-/* jiffies at the most recent update of wall time */
-unsigned long wall_jiffies;
-
-/*
- * This spinlock protect us from races in SMP while playing with xtime. -arca
- */
-rwlock_t xtime_lock = RW_LOCK_UNLOCKED;
-
-static inline void update_times(void)
-{
- unsigned long ticks;
-
- /*
- * update_times() is run from the raw timer_bh handler so we
- * just know that the irqs are locally enabled and so we don't
- * need to save/restore the flags of the local CPU here. -arca
- */
- write_lock_irq(&xtime_lock);
- vxtime_lock();
-
- ticks = jiffies - wall_jiffies;
- if (ticks) {
- wall_jiffies += ticks;
- update_wall_time(ticks);
- }
- vxtime_unlock();
- write_unlock_irq(&xtime_lock);
- calc_load(ticks);
-}
-
-void timer_bh(void)
-{
- update_times();
- run_timer_list();
-}
-
-void do_timer(struct pt_regs *regs)
-{
- (*(unsigned long *)&jiffies)++;
-#ifndef CONFIG_SMP
- /* SMP process accounting uses the local APIC timer */
-
- update_process_times(user_mode(regs));
-#endif
- mark_bh(TIMER_BH);
- if (TQ_ACTIVE(tq_timer))
- mark_bh(TQUEUE_BH);
-}
-
-void do_timer_ticks(int ticks)
-{
- (*(unsigned long *)&jiffies) += ticks;
- mark_bh(TIMER_BH);
- if (TQ_ACTIVE(tq_timer))
- mark_bh(TQUEUE_BH);
-}
-
-#if !defined(__alpha__) && !defined(__ia64__)
-
-/*
- * For backwards compatibility? This can be done in libc so Alpha
- * and all newer ports shouldn't need it.
- */
-asmlinkage unsigned long sys_alarm(unsigned int seconds)
-{
- struct itimerval it_new, it_old;
- unsigned int oldalarm;
-
- it_new.it_interval.tv_sec = it_new.it_interval.tv_usec = 0;
- it_new.it_value.tv_sec = seconds;
- it_new.it_value.tv_usec = 0;
- do_setitimer(ITIMER_REAL, &it_new, &it_old);
- oldalarm = it_old.it_value.tv_sec;
- /* ehhh.. We can't return 0 if we have an alarm pending.. */
- /* And we'd better return too much than too little anyway */
- if (it_old.it_value.tv_usec)
- oldalarm++;
- return oldalarm;
-}
-
-#endif
-
-#ifndef __alpha__
-
-/*
- * The Alpha uses getxpid, getxuid, and getxgid instead. Maybe this
- * should be moved into arch/i386 instead?
- */
-
-/**
- * sys_getpid - return the thread group id of the current process
- *
- * Note, despite the name, this returns the tgid not the pid. The tgid and
- * the pid are identical unless CLONE_THREAD was specified on clone() in
- * which case the tgid is the same in all threads of the same group.
- *
- * This is SMP safe as current->tgid does not change.
- */
-asmlinkage long sys_getpid(void)
-{
- return current->tgid;
-}
-
-/*
- * This is not strictly SMP safe: p_opptr could change
- * from under us. However, rather than getting any lock
- * we can use an optimistic algorithm: get the parent
- * pid, and go back and check that the parent is still
- * the same. If it has changed (which is extremely unlikely
- * indeed), we just try again..
- *
- * NOTE! This depends on the fact that even if we _do_
- * get an old value of "parent", we can happily dereference
- * the pointer: we just can't necessarily trust the result
- * until we know that the parent pointer is valid.
- *
- * The "mb()" macro is a memory barrier - a synchronizing
- * event. It also makes sure that gcc doesn't optimize
- * away the necessary memory references.. The barrier doesn't
- * have to have all that strong semantics: on x86 we don't
- * really require a synchronizing instruction, for example.
- * The barrier is more important for code generation than
- * for any real memory ordering semantics (even if there is
- * a small window for a race, using the old pointer is
- * harmless for a while).
- */
-asmlinkage long sys_getppid(void)
-{
- int pid;
- struct task_struct * me = current;
- struct task_struct * parent;
-
- parent = me->p_opptr;
- for (;;) {
- pid = parent->pid;
-#if CONFIG_SMP
-{
- struct task_struct *old = parent;
- mb();
- parent = me->p_opptr;
- if (old != parent)
- continue;
-}
-#endif
- break;
- }
- return pid;
-}
-
-asmlinkage long sys_getuid(void)
-{
- /* Only we change this so SMP safe */
- return current->uid;
-}
-
-asmlinkage long sys_geteuid(void)
-{
- /* Only we change this so SMP safe */
- return current->euid;
-}
-
-asmlinkage long sys_getgid(void)
-{
- /* Only we change this so SMP safe */
- return current->gid;
-}
-
-asmlinkage long sys_getegid(void)
-{
- /* Only we change this so SMP safe */
- return current->egid;
-}
-
-#endif
-
-/* Thread ID - the internal kernel "pid" */
-asmlinkage long sys_gettid(void)
-{
- return current->pid;
-}
-
-asmlinkage long sys_nanosleep(struct timespec *rqtp, struct timespec *rmtp)
-{
- struct timespec t;
- unsigned long expire;
-
- if(copy_from_user(&t, rqtp, sizeof(struct timespec)))
- return -EFAULT;
-
- if (t.tv_nsec >= 1000000000L || t.tv_nsec < 0 || t.tv_sec < 0)
- return -EINVAL;
-
-
- if (t.tv_sec == 0 && t.tv_nsec <= 2000000L &&
- current->policy != SCHED_OTHER)
- {
- /*
- * Short delay requests up to 2 ms will be handled with
- * high precision by a busy wait for all real-time processes.
- *
- * Its important on SMP not to do this holding locks.
- */
- udelay((t.tv_nsec + 999) / 1000);
- return 0;
- }
-
- expire = timespec_to_jiffies(&t) + (t.tv_sec || t.tv_nsec);
-
- current->state = TASK_INTERRUPTIBLE;
- expire = schedule_timeout(expire);
-
- if (expire) {
- if (rmtp) {
- jiffies_to_timespec(expire, &t);
- if (copy_to_user(rmtp, &t, sizeof(struct timespec)))
- return -EFAULT;
- }
- return -EINTR;
- }
- return 0;
-}
-
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.4.30-xen-sparse/mkbuildtree
--- a/linux-2.4.30-xen-sparse/mkbuildtree Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,292 +0,0 @@
-#!/bin/bash
-
-# mkbuildtree <build tree>
-#
-# Creates symbolic links in <build tree> for the sparse tree
-# in the current directory.
-
-# Script to determine the relative path between two directories.
-# Copyright (c) D. J. Hawkey Jr. 2002
-# Fixed for Xen project by K. Fraser in 2003.
-abs_to_rel ()
-{
- local CWD SRCPATH
-
- if [ "$1" != "/" -a "${1##*[^/]}" = "/" ]; then
- SRCPATH=${1%?}
- else
- SRCPATH=$1
- fi
- if [ "$2" != "/" -a "${2##*[^/]}" = "/" ]; then
- DESTPATH=${2%?}
- else
- DESTPATH=$2
- fi
-
- CWD=$PWD
- [ "${1%%[^/]*}" != "/" ] && cd $1 && SRCPATH=$PWD
- [ "${2%%[^/]*}" != "/" ] && cd $2 && DESTPATH=$PWD
- [ "$CWD" != "$PWD" ] && cd $CWD
-
- BASEPATH=$SRCPATH
-
- [ "$SRCPATH" = "$DESTPATH" ] && DESTPATH="." && return
- [ "$SRCPATH" = "/" ] && DESTPATH=${DESTPATH#?} && return
-
- while [ "$BASEPATH/" != "${DESTPATH%${DESTPATH#$BASEPATH/}}" ]; do
- BASEPATH=${BASEPATH%/*}
- done
-
- SRCPATH=${SRCPATH#$BASEPATH}
- DESTPATH=${DESTPATH#$BASEPATH}
- DESTPATH=${DESTPATH#?}
- while [ -n "$SRCPATH" ]; do
- SRCPATH=${SRCPATH%/*}
- DESTPATH="../$DESTPATH"
- done
-
- [ -z "$BASEPATH" ] && BASEPATH="/"
- [ "${DESTPATH##*[^/]}" = "/" ] && DESTPATH=${DESTPATH%?}
-}
-
-# relative_lndir <target_dir>
-# Creates a tree of symlinks in the current working directory that mirror
-# real files in <target_dir>. <target_dir> should be relative to the current
-# working directory. Symlinks in <target_dir> are ignored. Source-control files
-# are ignored.
-relative_lndir ()
-{
- local SYMLINK_DIR REAL_DIR pref i j
- SYMLINK_DIR=$PWD
- REAL_DIR=$1
- (
- cd $REAL_DIR
- for i in `find . -type d | grep -v SCCS`; do
- [ -d $SYMLINK_DIR/$i ] || mkdir -p $SYMLINK_DIR/$i
- (
- cd $i
- pref=`echo $i | sed -e 's#/[^/]*#../#g' -e 's#^\.##'`
- for j in `find . -maxdepth 1 -type f -o -type l`; do
- ln -sf ${pref}${REAL_DIR}/$i/$j ${SYMLINK_DIR}/$i/$j
- done
- )
- done
- )
-}
-
-[ "$1" == "" ] && { echo "Syntax: $0 <linux tree to xenify>"; exit 1; }
-
-# Get absolute path to the destination directory
-pushd . >/dev/null
-cd ${1} || { echo "cannot cd to ${1}"; exit 1; }
-AD=$PWD
-popd >/dev/null
-
-# Get absolute path to the source directory
-AS=`pwd`
-
-# Get path to source, relative to destination
-abs_to_rel ${AD} ${AS}
-RS=$DESTPATH
-
-# Remove old copies of files and directories at the destination
-for i in `find . -type f -o -type l` ; do rm -f ${AD}/${i#./} ; done
-
-# We now work from the destination directory
-cd ${AD} || { echo "cannot cd to ${AD}"; exit 1; }
-
-# Remove old symlinks
-for i in `find . -type l`; do rm -f $i; done
-
-# Create symlinks of files and directories which exist in the sparse source
-relative_lndir ${RS}
-rm -f mkbuildtree
-
-set ${RS}/../linux-2.6.*-xen-sparse
-[ "$1" == "${RS}/../linux-2.6.*-xen-parse" ] && { echo "no Linux 2.6 sparse
tree at ${RS}/../linux-2.6.*-xen-sparse"; exit 1; }
-LINUX_26="$1"
-
-
-# Create links to the shared definitions of the Xen interfaces.
-rm -rf ${AD}/include/asm-xen/xen-public
-mkdir ${AD}/include/asm-xen/xen-public
-cd ${AD}/include/asm-xen/xen-public
-relative_lndir ../../../${RS}/../xen/include/public
-
-# Create a link to the shared definitions for the control interface
-cd ${AD}/include/asm-xen
-
-## Symlinks for files:
-## - which are identical in the i386 and xen-i386 architecture-dependent
-## subdirectories.
-## - which are identical in the Linux 2.6 and Linux 2.4 ports.
-
-cd ${AD}/include/asm-xen
-ln -sf ../asm-i386/a.out.h
-ln -sf ../asm-i386/apicdef.h
-ln -sf ../asm-i386/apic.h
-ln -sf ../asm-i386/atomic.h
-ln -sf ../asm-i386/bitops.h
-ln -sf ../asm-i386/boot.h
-ln -sf ../asm-i386/byteorder.h
-ln -sf ../asm-i386/cache.h
-ln -sf ../asm-i386/checksum.h
-ln -sf ../asm-i386/cpufeature.h
-ln -sf ../asm-i386/current.h
-ln -sf ../asm-i386/debugreg.h
-ln -sf ../asm-i386/delay.h
-ln -sf ../asm-i386/div64.h
-ln -sf ../asm-i386/dma.h
-ln -sf ../asm-i386/elf.h
-ln -sf ../asm-i386/errno.h
-ln -sf ../asm-i386/fcntl.h
-ln -sf ../asm-i386/floppy.h
-ln -sf ../asm-i386/hardirq.h
-ln -sf ../asm-i386/hdreg.h
-ln -sf ../asm-i386/i387.h
-ln -sf ../asm-i386/ide.h
-ln -sf ../asm-i386/init.h
-ln -sf ../asm-i386/io_apic.h
-ln -sf ../asm-i386/ioctl.h
-ln -sf ../asm-i386/ioctls.h
-ln -sf ../asm-i386/ipcbuf.h
-ln -sf ../asm-i386/ipc.h
-ln -sf ../asm-i386/kmap_types.h
-ln -sf ../asm-i386/ldt.h
-ln -sf ../asm-i386/linux_logo.h
-ln -sf ../asm-i386/locks.h
-ln -sf ../asm-i386/math_emu.h
-ln -sf ../asm-i386/mc146818rtc.h
-ln -sf ../asm-i386/mca_dma.h
-ln -sf ../asm-i386/mman.h
-ln -sf ../asm-i386/mmu.h
-ln -sf ../asm-i386/mmx.h
-ln -sf ../asm-i386/mpspec.h
-ln -sf ../asm-i386/msgbuf.h
-ln -sf ../asm-i386/msr.h
-ln -sf ../asm-i386/mtrr.h
-ln -sf ../asm-i386/namei.h
-ln -sf ../asm-i386/param.h
-ln -sf ../asm-i386/parport.h
-ln -sf ../asm-i386/pgtable-3level.h
-ln -sf ../asm-i386/poll.h
-ln -sf ../asm-i386/posix_types.h
-ln -sf ../asm-i386/ptrace.h
-ln -sf ../asm-i386/resource.h
-ln -sf ../asm-i386/rwlock.h
-ln -sf ../asm-i386/rwsem.h
-ln -sf ../asm-i386/scatterlist.h
-ln -sf ../asm-i386/semaphore.h
-ln -sf ../asm-i386/sembuf.h
-ln -sf ../asm-i386/serial.h
-ln -sf ../asm-i386/setup.h
-ln -sf ../asm-i386/shmbuf.h
-ln -sf ../asm-i386/shmparam.h
-ln -sf ../asm-i386/sigcontext.h
-ln -sf ../asm-i386/siginfo.h
-ln -sf ../asm-i386/signal.h
-ln -sf ../asm-i386/smplock.h
-ln -sf ../asm-i386/socket.h
-ln -sf ../asm-i386/sockios.h
-ln -sf ../asm-i386/softirq.h
-ln -sf ../asm-i386/spinlock.h
-ln -sf ../asm-i386/statfs.h
-ln -sf ../asm-i386/stat.h
-ln -sf ../asm-i386/string-486.h
-ln -sf ../asm-i386/string.h
-ln -sf ../asm-i386/termbits.h
-ln -sf ../asm-i386/termios.h
-ln -sf ../asm-i386/timex.h
-ln -sf ../asm-i386/tlb.h
-ln -sf ../asm-i386/types.h
-ln -sf ../asm-i386/uaccess.h
-ln -sf ../asm-i386/ucontext.h
-ln -sf ../asm-i386/unaligned.h
-ln -sf ../asm-i386/unistd.h
-ln -sf ../asm-i386/user.h
-ln -sf ../asm-i386/vm86.h
-ln -sf ../../${LINUX_26}/include/asm-xen/balloon.h
-ln -sf ../../${LINUX_26}/include/asm-xen/ctrl_if.h
-ln -sf ../../${LINUX_26}/include/asm-xen/evtchn.h
-ln -sf ../../${LINUX_26}/include/asm-xen/gnttab.h
-ln -sf ../../${LINUX_26}/include/asm-xen/hypervisor.h
-ln -sf ../../${LINUX_26}/include/asm-xen/xen_proc.h
-ln -sf ../../${LINUX_26}/include/asm-xen/asm-i386/synch_bitops.h
-ln -sf ../../${LINUX_26}/include/asm-xen/asm-i386/hypercall.h
-
-mkdir -p linux-public && cd linux-public
-ln -sf ../../../${LINUX_26}/include/asm-xen/linux-public/privcmd.h
-ln -sf ../../../${LINUX_26}/include/asm-xen/linux-public/suspend.h
-
-cd ${AD}/arch/xen/kernel
-ln -sf ../../i386/kernel/i387.c
-ln -sf ../../i386/kernel/init_task.c
-ln -sf ../../i386/kernel/pci-i386.c
-ln -sf ../../i386/kernel/pci-i386.h
-ln -sf ../../i386/kernel/ptrace.c
-ln -sf ../../i386/kernel/semaphore.c
-ln -sf ../../i386/kernel/sys_i386.c
-ln -sf ../../../${LINUX_26}/arch/xen/kernel/ctrl_if.c
-ln -sf ../../../${LINUX_26}/arch/xen/kernel/evtchn.c
-ln -sf ../../../${LINUX_26}/arch/xen/kernel/fixup.c
-ln -sf ../../../${LINUX_26}/arch/xen/kernel/gnttab.c
-ln -sf ../../../${LINUX_26}/arch/xen/kernel/reboot.c
-ln -sf ../../../${LINUX_26}/arch/xen/kernel/skbuff.c
-
-cd ${AD}/arch/xen/lib
-ln -sf ../../i386/lib/checksum.S
-ln -sf ../../i386/lib/dec_and_lock.c
-ln -sf ../../i386/lib/getuser.S
-ln -sf ../../i386/lib/iodebug.c
-ln -sf ../../i386/lib/memcpy.c
-ln -sf ../../i386/lib/mmx.c
-ln -sf ../../i386/lib/old-checksum.c
-ln -sf ../../i386/lib/strstr.c
-ln -sf ../../i386/lib/usercopy.c
-ln -sf ../../../${LINUX_26}/arch/xen/kernel/xen_proc.c
-
-cd ${AD}/arch/xen/mm
-ln -sf ../../i386/mm/extable.c
-ln -sf ../../i386/mm/pageattr.c
-ln -sf ../../../${LINUX_26}/arch/xen/i386/mm/hypervisor.c
-
-cd ${AD}/arch/xen/drivers/balloon
-ln -sf ../../../../${LINUX_26}/drivers/xen/balloon/balloon.c
-
-cd ${AD}/arch/xen/drivers/console
-ln -sf ../../../../${LINUX_26}/drivers/xen/console/console.c
-
-cd ${AD}/arch/xen/drivers/dom0
-ln -sf ../../../../${LINUX_26}/drivers/xen/privcmd/privcmd.c core.c
-
-cd ${AD}/arch/xen/drivers/evtchn
-ln -sf ../../../../${LINUX_26}/drivers/xen/evtchn/evtchn.c
-
-cd ${AD}/arch/xen/drivers/netif/frontend
-ln -sf ../../../../../${LINUX_26}/drivers/xen/netfront/netfront.c main.c
-
-cd ${AD}/arch/xen/drivers/netif/backend
-ln -sf ../../../../../${LINUX_26}/drivers/xen/netback/common.h
-ln -sf ../../../../../${LINUX_26}/drivers/xen/netback/control.c
-ln -sf ../../../../../${LINUX_26}/drivers/xen/netback/interface.c
-ln -sf ../../../../../${LINUX_26}/drivers/xen/netback/netback.c main.c
-
-cd ${AD}/arch/xen/drivers/blkif/backend
-ln -sf ../../../../../${LINUX_26}/drivers/xen/blkback/common.h
-ln -sf ../../../../../${LINUX_26}/drivers/xen/blkback/blkback.c main.c
-ln -sf ../../../../../${LINUX_26}/drivers/xen/blkback/control.c
-ln -sf ../../../../../${LINUX_26}/drivers/xen/blkback/interface.c
-ln -sf ../../../../../${LINUX_26}/drivers/xen/blkback/vbd.c
-
-cd ${AD}/arch/xen/drivers/blkif/frontend
-ln -sf ../../../../../${LINUX_26}/drivers/xen/blkfront/blkfront.c
-
-cd ${AD}/arch/xen/drivers/usbif/frontend
-ln -sf ../../../../../${LINUX_26}/drivers/xen/usbfront/usbfront.c main.c
-ln -sf ../../../../../${LINUX_26}/drivers/xen/usbfront/xhci.h
-
-cd ${AD}/arch/xen/drivers/usbif/backend
-ln -sf ../../../../../${LINUX_26}/drivers/xen/usbback/common.h
-ln -sf ../../../../../${LINUX_26}/drivers/xen/usbback/control.c
-ln -sf ../../../../../${LINUX_26}/drivers/xen/usbback/interface.c
-ln -sf ../../../../../${LINUX_26}/drivers/xen/usbback/usbback.c main.c
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.4.30-xen-sparse/mm/highmem.c
--- a/linux-2.4.30-xen-sparse/mm/highmem.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,461 +0,0 @@
-/*
- * High memory handling common code and variables.
- *
- * (C) 1999 Andrea Arcangeli, SuSE GmbH, andrea@xxxxxxx
- * Gerhard Wichert, Siemens AG, Gerhard.Wichert@xxxxxxxxxxxxxx
- *
- *
- * Redesigned the x86 32-bit VM architecture to deal with
- * 64-bit physical space. With current x86 CPUs this
- * means up to 64 Gigabytes physical RAM.
- *
- * Rewrote high memory support to move the page cache into
- * high memory. Implemented permanent (schedulable) kmaps
- * based on Linus' idea.
- *
- * Copyright (C) 1999 Ingo Molnar <mingo@xxxxxxxxxx>
- */
-
-#include <linux/mm.h>
-#include <linux/pagemap.h>
-#include <linux/highmem.h>
-#include <linux/swap.h>
-#include <linux/slab.h>
-
-/*
- * Virtual_count is not a pure "count".
- * 0 means that it is not mapped, and has not been mapped
- * since a TLB flush - it is usable.
- * 1 means that there are no users, but it has been mapped
- * since the last TLB flush - so we can't use it.
- * n means that there are (n-1) current users of it.
- */
-static int pkmap_count[LAST_PKMAP];
-static unsigned int last_pkmap_nr;
-static spinlock_cacheline_t kmap_lock_cacheline = {SPIN_LOCK_UNLOCKED};
-#define kmap_lock kmap_lock_cacheline.lock
-
-pte_t * pkmap_page_table;
-
-static DECLARE_WAIT_QUEUE_HEAD(pkmap_map_wait);
-
-static void flush_all_zero_pkmaps(void)
-{
- int i;
-
- flush_cache_all();
-
- for (i = 0; i < LAST_PKMAP; i++) {
- struct page *page;
-
- /*
- * zero means we don't have anything to do,
- * >1 means that it is still in use. Only
- * a count of 1 means that it is free but
- * needs to be unmapped
- */
- if (pkmap_count[i] != 1)
- continue;
- pkmap_count[i] = 0;
-
- /* sanity check */
- if (pte_none(pkmap_page_table[i]))
- BUG();
-
- /*
- * Don't need an atomic fetch-and-clear op here;
- * no-one has the page mapped, and cannot get at
- * its virtual address (and hence PTE) without first
- * getting the kmap_lock (which is held here).
- * So no dangers, even with speculative execution.
- */
- page = pte_page(pkmap_page_table[i]);
- pte_clear(&pkmap_page_table[i]);
-
- page->virtual = NULL;
- }
- flush_tlb_all();
-}
-
-static inline unsigned long map_new_virtual(struct page *page, int nonblocking)
-{
- unsigned long vaddr;
- int count;
-
-start:
- count = LAST_PKMAP;
- /* Find an empty entry */
- for (;;) {
- last_pkmap_nr = (last_pkmap_nr + 1) & LAST_PKMAP_MASK;
- if (!last_pkmap_nr) {
- flush_all_zero_pkmaps();
- count = LAST_PKMAP;
- }
- if (!pkmap_count[last_pkmap_nr])
- break; /* Found a usable entry */
- if (--count)
- continue;
-
- if (nonblocking)
- return 0;
-
- /*
- * Sleep for somebody else to unmap their entries
- */
- {
- DECLARE_WAITQUEUE(wait, current);
-
- current->state = TASK_UNINTERRUPTIBLE;
- add_wait_queue(&pkmap_map_wait, &wait);
- spin_unlock(&kmap_lock);
- schedule();
- remove_wait_queue(&pkmap_map_wait, &wait);
- spin_lock(&kmap_lock);
-
- /* Somebody else might have mapped it while we slept */
- if (page->virtual)
- return (unsigned long) page->virtual;
-
- /* Re-start */
- goto start;
- }
- }
- vaddr = PKMAP_ADDR(last_pkmap_nr);
- set_pte(&(pkmap_page_table[last_pkmap_nr]), mk_pte(page, kmap_prot));
-
- pkmap_count[last_pkmap_nr] = 1;
- page->virtual = (void *) vaddr;
-
- return vaddr;
-}
-
-void kmap_flush_unused(void)
-{
- spin_lock(&kmap_lock);
- flush_all_zero_pkmaps();
- spin_unlock(&kmap_lock);
-}
-
-void fastcall *kmap_high(struct page *page, int nonblocking)
-{
- unsigned long vaddr;
-
- /*
- * For highmem pages, we can't trust "virtual" until
- * after we have the lock.
- *
- * We cannot call this from interrupts, as it may block
- */
- spin_lock(&kmap_lock);
- vaddr = (unsigned long) page->virtual;
- if (!vaddr) {
- vaddr = map_new_virtual(page, nonblocking);
- if (!vaddr)
- goto out;
- }
- pkmap_count[PKMAP_NR(vaddr)]++;
- if (pkmap_count[PKMAP_NR(vaddr)] < 2)
- BUG();
- out:
- spin_unlock(&kmap_lock);
- return (void*) vaddr;
-}
-
-void fastcall kunmap_high(struct page *page)
-{
- unsigned long vaddr;
- unsigned long nr;
- int need_wakeup;
-
- spin_lock(&kmap_lock);
- vaddr = (unsigned long) page->virtual;
- if (!vaddr)
- BUG();
- nr = PKMAP_NR(vaddr);
-
- /*
- * A count must never go down to zero
- * without a TLB flush!
- */
- need_wakeup = 0;
- switch (--pkmap_count[nr]) {
- case 0:
- BUG();
- case 1:
- /*
- * Avoid an unnecessary wake_up() function call.
- * The common case is pkmap_count[] == 1, but
- * no waiters.
- * The tasks queued in the wait-queue are guarded
- * by both the lock in the wait-queue-head and by
- * the kmap_lock. As the kmap_lock is held here,
- * no need for the wait-queue-head's lock. Simply
- * test if the queue is empty.
- */
- need_wakeup = waitqueue_active(&pkmap_map_wait);
- }
- spin_unlock(&kmap_lock);
-
- /* do wake-up, if needed, race-free outside of the spin lock */
- if (need_wakeup)
- wake_up(&pkmap_map_wait);
-}
-
-#define POOL_SIZE 32
-
-/*
- * This lock gets no contention at all, normally.
- */
-static spinlock_t emergency_lock = SPIN_LOCK_UNLOCKED;
-
-int nr_emergency_pages;
-static LIST_HEAD(emergency_pages);
-
-int nr_emergency_bhs;
-static LIST_HEAD(emergency_bhs);
-
-/*
- * Simple bounce buffer support for highmem pages.
- * This will be moved to the block layer in 2.5.
- */
-
-static inline void copy_from_high_bh (struct buffer_head *to,
- struct buffer_head *from)
-{
- struct page *p_from;
- char *vfrom;
-
- p_from = from->b_page;
-
- vfrom = kmap_atomic(p_from, KM_USER0);
- memcpy(to->b_data, vfrom + bh_offset(from), to->b_size);
- kunmap_atomic(vfrom, KM_USER0);
-}
-
-static inline void copy_to_high_bh_irq (struct buffer_head *to,
- struct buffer_head *from)
-{
- struct page *p_to;
- char *vto;
- unsigned long flags;
-
- p_to = to->b_page;
- __save_flags(flags);
- __cli();
- vto = kmap_atomic(p_to, KM_BOUNCE_READ);
- memcpy(vto + bh_offset(to), from->b_data, to->b_size);
- kunmap_atomic(vto, KM_BOUNCE_READ);
- __restore_flags(flags);
-}
-
-static inline void bounce_end_io (struct buffer_head *bh, int uptodate)
-{
- struct page *page;
- struct buffer_head *bh_orig = (struct buffer_head *)(bh->b_private);
- unsigned long flags;
-
- bh_orig->b_end_io(bh_orig, uptodate);
-
- page = bh->b_page;
-
- spin_lock_irqsave(&emergency_lock, flags);
- if (nr_emergency_pages >= POOL_SIZE)
- __free_page(page);
- else {
- /*
- * We are abusing page->list to manage
- * the highmem emergency pool:
- */
- list_add(&page->list, &emergency_pages);
- nr_emergency_pages++;
- }
-
- if (nr_emergency_bhs >= POOL_SIZE) {
-#ifdef HIGHMEM_DEBUG
- /* Don't clobber the constructed slab cache */
- init_waitqueue_head(&bh->b_wait);
-#endif
- kmem_cache_free(bh_cachep, bh);
- } else {
- /*
- * Ditto in the bh case, here we abuse b_inode_buffers:
- */
- list_add(&bh->b_inode_buffers, &emergency_bhs);
- nr_emergency_bhs++;
- }
- spin_unlock_irqrestore(&emergency_lock, flags);
-}
-
-static __init int init_emergency_pool(void)
-{
- struct sysinfo i;
- si_meminfo(&i);
- si_swapinfo(&i);
-
- if (!i.totalhigh)
- return 0;
-
- spin_lock_irq(&emergency_lock);
- while (nr_emergency_pages < POOL_SIZE) {
- struct page * page = alloc_page(GFP_ATOMIC);
- if (!page) {
- printk("couldn't refill highmem emergency pages");
- break;
- }
- list_add(&page->list, &emergency_pages);
- nr_emergency_pages++;
- }
- while (nr_emergency_bhs < POOL_SIZE) {
- struct buffer_head * bh = kmem_cache_alloc(bh_cachep,
SLAB_ATOMIC);
- if (!bh) {
- printk("couldn't refill highmem emergency bhs");
- break;
- }
- list_add(&bh->b_inode_buffers, &emergency_bhs);
- nr_emergency_bhs++;
- }
- spin_unlock_irq(&emergency_lock);
- printk("allocated %d pages and %d bhs reserved for the highmem
bounces\n",
- nr_emergency_pages, nr_emergency_bhs);
-
- return 0;
-}
-
-__initcall(init_emergency_pool);
-
-static void bounce_end_io_write (struct buffer_head *bh, int uptodate)
-{
- bounce_end_io(bh, uptodate);
-}
-
-static void bounce_end_io_read (struct buffer_head *bh, int uptodate)
-{
- struct buffer_head *bh_orig = (struct buffer_head *)(bh->b_private);
-
- if (uptodate)
- copy_to_high_bh_irq(bh_orig, bh);
- bounce_end_io(bh, uptodate);
-}
-
-struct page *alloc_bounce_page (void)
-{
- struct list_head *tmp;
- struct page *page;
-
- page = alloc_page(GFP_NOHIGHIO);
- if (page)
- return page;
- /*
- * No luck. First, kick the VM so it doesn't idle around while
- * we are using up our emergency rations.
- */
- wakeup_bdflush();
-
-repeat_alloc:
- /*
- * Try to allocate from the emergency pool.
- */
- tmp = &emergency_pages;
- spin_lock_irq(&emergency_lock);
- if (!list_empty(tmp)) {
- page = list_entry(tmp->next, struct page, list);
- list_del(tmp->next);
- nr_emergency_pages--;
- }
- spin_unlock_irq(&emergency_lock);
- if (page)
- return page;
-
- /* we need to wait I/O completion */
- run_task_queue(&tq_disk);
-
- yield();
- goto repeat_alloc;
-}
-
-struct buffer_head *alloc_bounce_bh (void)
-{
- struct list_head *tmp;
- struct buffer_head *bh;
-
- bh = kmem_cache_alloc(bh_cachep, SLAB_NOHIGHIO);
- if (bh)
- return bh;
- /*
- * No luck. First, kick the VM so it doesn't idle around while
- * we are using up our emergency rations.
- */
- wakeup_bdflush();
-
-repeat_alloc:
- /*
- * Try to allocate from the emergency pool.
- */
- tmp = &emergency_bhs;
- spin_lock_irq(&emergency_lock);
- if (!list_empty(tmp)) {
- bh = list_entry(tmp->next, struct buffer_head, b_inode_buffers);
- list_del(tmp->next);
- nr_emergency_bhs--;
- }
- spin_unlock_irq(&emergency_lock);
- if (bh)
- return bh;
-
- /* we need to wait I/O completion */
- run_task_queue(&tq_disk);
-
- yield();
- goto repeat_alloc;
-}
-
-struct buffer_head * create_bounce(int rw, struct buffer_head * bh_orig)
-{
- struct page *page;
- struct buffer_head *bh;
-
- if (!PageHighMem(bh_orig->b_page))
- return bh_orig;
-
- bh = alloc_bounce_bh();
- /*
- * This is wasteful for 1k buffers, but this is a stopgap measure
- * and we are being ineffective anyway. This approach simplifies
- * things immensly. On boxes with more than 4GB RAM this should
- * not be an issue anyway.
- */
- page = alloc_bounce_page();
-
- set_bh_page(bh, page, 0);
-
- bh->b_next = NULL;
- bh->b_blocknr = bh_orig->b_blocknr;
- bh->b_size = bh_orig->b_size;
- bh->b_list = -1;
- bh->b_dev = bh_orig->b_dev;
- bh->b_count = bh_orig->b_count;
- bh->b_rdev = bh_orig->b_rdev;
- bh->b_state = bh_orig->b_state;
-#ifdef HIGHMEM_DEBUG
- bh->b_flushtime = jiffies;
- bh->b_next_free = NULL;
- bh->b_prev_free = NULL;
- /* bh->b_this_page */
- bh->b_reqnext = NULL;
- bh->b_pprev = NULL;
-#endif
- /* bh->b_page */
- if (rw == WRITE) {
- bh->b_end_io = bounce_end_io_write;
- copy_from_high_bh(bh, bh_orig);
- } else
- bh->b_end_io = bounce_end_io_read;
- bh->b_private = (void *)bh_orig;
- bh->b_rsector = bh_orig->b_rsector;
-#ifdef HIGHMEM_DEBUG
- memset(&bh->b_wait, -1, sizeof(bh->b_wait));
-#endif
-
- return bh;
-}
-
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.4.30-xen-sparse/mm/memory.c
--- a/linux-2.4.30-xen-sparse/mm/memory.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,1534 +0,0 @@
-/*
- * linux/mm/memory.c
- *
- * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds
- */
-
-/*
- * demand-loading started 01.12.91 - seems it is high on the list of
- * things wanted, and it should be easy to implement. - Linus
- */
-
-/*
- * Ok, demand-loading was easy, shared pages a little bit tricker. Shared
- * pages started 02.12.91, seems to work. - Linus.
- *
- * Tested sharing by executing about 30 /bin/sh: under the old kernel it
- * would have taken more than the 6M I have free, but it worked well as
- * far as I could see.
- *
- * Also corrected some "invalidate()"s - I wasn't doing enough of them.
- */
-
-/*
- * Real VM (paging to/from disk) started 18.12.91. Much more work and
- * thought has to go into this. Oh, well..
- * 19.12.91 - works, somewhat. Sometimes I get faults, don't know why.
- * Found it. Everything seems to work now.
- * 20.12.91 - Ok, making the swap-device changeable like the root.
- */
-
-/*
- * 05.04.94 - Multi-page memory management added for v1.1.
- * Idea by Alex Bligh (alex@xxxxxxxxxxxxxxx)
- *
- * 16.07.99 - Support of BIGMEM added by Gerhard Wichert, Siemens AG
- * (Gerhard.Wichert@xxxxxxxxxxxxxx)
- */
-
-#include <linux/mm.h>
-#include <linux/mman.h>
-#include <linux/swap.h>
-#include <linux/smp_lock.h>
-#include <linux/swapctl.h>
-#include <linux/iobuf.h>
-#include <linux/highmem.h>
-#include <linux/pagemap.h>
-#include <linux/module.h>
-
-#include <asm/pgalloc.h>
-#include <asm/uaccess.h>
-#include <asm/tlb.h>
-
-unsigned long max_mapnr;
-unsigned long num_physpages;
-unsigned long num_mappedpages;
-void * high_memory;
-struct page *highmem_start_page;
-
-/*
- * We special-case the C-O-W ZERO_PAGE, because it's such
- * a common occurrence (no need to read the page to know
- * that it's zero - better for the cache and memory subsystem).
- */
-static inline void copy_cow_page(struct page * from, struct page * to,
unsigned long address)
-{
- if (from == ZERO_PAGE(address)) {
- clear_user_highpage(to, address);
- return;
- }
- copy_user_highpage(to, from, address);
-}
-
-mem_map_t * mem_map;
-
-/*
- * Called by TLB shootdown
- */
-void __free_pte(pte_t pte)
-{
- struct page *page = pte_page(pte);
- if ((!VALID_PAGE(page)) || PageReserved(page))
- return;
- if (pte_dirty(pte))
- set_page_dirty(page);
- free_page_and_swap_cache(page);
-}
-
-
-/*
- * Note: this doesn't free the actual pages themselves. That
- * has been handled earlier when unmapping all the memory regions.
- */
-static inline void free_one_pmd(pmd_t * dir)
-{
- pte_t * pte;
-
- if (pmd_none(*dir))
- return;
- if (pmd_bad(*dir)) {
- pmd_ERROR(*dir);
- pmd_clear(dir);
- return;
- }
- pte = pte_offset(dir, 0);
- pmd_clear(dir);
- pte_free(pte);
-}
-
-static inline void free_one_pgd(pgd_t * dir)
-{
- int j;
- pmd_t * pmd;
-
- if (pgd_none(*dir))
- return;
- if (pgd_bad(*dir)) {
- pgd_ERROR(*dir);
- pgd_clear(dir);
- return;
- }
- pmd = pmd_offset(dir, 0);
- pgd_clear(dir);
- for (j = 0; j < PTRS_PER_PMD ; j++) {
- prefetchw(pmd+j+(PREFETCH_STRIDE/16));
- free_one_pmd(pmd+j);
- }
- pmd_free(pmd);
-}
-
-/* Low and high watermarks for page table cache.
- The system should try to have pgt_water[0] <= cache elements <= pgt_water[1]
- */
-int pgt_cache_water[2] = { 25, 50 };
-
-/* Returns the number of pages freed */
-int check_pgt_cache(void)
-{
- return do_check_pgt_cache(pgt_cache_water[0], pgt_cache_water[1]);
-}
-
-
-/*
- * This function clears all user-level page tables of a process - this
- * is needed by execve(), so that old pages aren't in the way.
- */
-void clear_page_tables(struct mm_struct *mm, unsigned long first, int nr)
-{
- pgd_t * page_dir = mm->pgd;
-
- spin_lock(&mm->page_table_lock);
- page_dir += first;
- do {
- free_one_pgd(page_dir);
- page_dir++;
- } while (--nr);
- spin_unlock(&mm->page_table_lock);
-
- /* keep the page table cache within bounds */
- check_pgt_cache();
-}
-
-#define PTE_TABLE_MASK ((PTRS_PER_PTE-1) * sizeof(pte_t))
-#define PMD_TABLE_MASK ((PTRS_PER_PMD-1) * sizeof(pmd_t))
-
-/*
- * copy one vm_area from one task to the other. Assumes the page tables
- * already present in the new task to be cleared in the whole range
- * covered by this vma.
- *
- * 08Jan98 Merged into one routine from several inline routines to reduce
- * variable count and make things faster. -jj
- *
- * dst->page_table_lock is held on entry and exit,
- * but may be dropped within pmd_alloc() and pte_alloc().
- */
-int copy_page_range(struct mm_struct *dst, struct mm_struct *src,
- struct vm_area_struct *vma)
-{
- pgd_t * src_pgd, * dst_pgd;
- unsigned long address = vma->vm_start;
- unsigned long end = vma->vm_end;
- unsigned long cow = (vma->vm_flags & (VM_SHARED | VM_MAYWRITE)) ==
VM_MAYWRITE;
-
- src_pgd = pgd_offset(src, address)-1;
- dst_pgd = pgd_offset(dst, address)-1;
-
- for (;;) {
- pmd_t * src_pmd, * dst_pmd;
-
- src_pgd++; dst_pgd++;
-
- /* copy_pmd_range */
-
- if (pgd_none(*src_pgd))
- goto skip_copy_pmd_range;
- if (pgd_bad(*src_pgd)) {
- pgd_ERROR(*src_pgd);
- pgd_clear(src_pgd);
-skip_copy_pmd_range: address = (address + PGDIR_SIZE) & PGDIR_MASK;
- if (!address || (address >= end))
- goto out;
- continue;
- }
-
- src_pmd = pmd_offset(src_pgd, address);
- dst_pmd = pmd_alloc(dst, dst_pgd, address);
- if (!dst_pmd)
- goto nomem;
-
- do {
- pte_t * src_pte, * dst_pte;
-
- /* copy_pte_range */
-
- if (pmd_none(*src_pmd))
- goto skip_copy_pte_range;
- if (pmd_bad(*src_pmd)) {
- pmd_ERROR(*src_pmd);
- pmd_clear(src_pmd);
-skip_copy_pte_range: address = (address + PMD_SIZE) & PMD_MASK;
- if (address >= end)
- goto out;
- goto cont_copy_pmd_range;
- }
-
- src_pte = pte_offset(src_pmd, address);
- dst_pte = pte_alloc(dst, dst_pmd, address);
- if (!dst_pte)
- goto nomem;
-
- spin_lock(&src->page_table_lock);
- do {
- pte_t pte = *src_pte;
- struct page *ptepage;
-
- /* copy_one_pte */
-
- if (pte_none(pte))
- goto cont_copy_pte_range_noset;
- if (!pte_present(pte)) {
- swap_duplicate(pte_to_swp_entry(pte));
- goto cont_copy_pte_range;
- }
- ptepage = pte_page(pte);
- if ((!VALID_PAGE(ptepage)) ||
- PageReserved(ptepage))
- goto cont_copy_pte_range;
-
- /* If it's a COW mapping, write protect it both
in the parent and the child */
- if (cow && pte_write(pte)) {
- ptep_set_wrprotect(src_pte);
- pte = *src_pte;
- }
-
- /* If it's a shared mapping, mark it clean in
the child */
- if (vma->vm_flags & VM_SHARED)
- pte = pte_mkclean(pte);
- pte = pte_mkold(pte);
- get_page(ptepage);
- dst->rss++;
-
-cont_copy_pte_range: set_pte(dst_pte, pte);
-cont_copy_pte_range_noset: address += PAGE_SIZE;
- if (address >= end)
- goto out_unlock;
- src_pte++;
- dst_pte++;
- } while ((unsigned long)src_pte & PTE_TABLE_MASK);
- spin_unlock(&src->page_table_lock);
-
-cont_copy_pmd_range: src_pmd++;
- dst_pmd++;
- } while ((unsigned long)src_pmd & PMD_TABLE_MASK);
- }
-out_unlock:
- spin_unlock(&src->page_table_lock);
-out:
- return 0;
-nomem:
- return -ENOMEM;
-}
-
-/*
- * Return indicates whether a page was freed so caller can adjust rss
- */
-static inline void forget_pte(pte_t page)
-{
- if (!pte_none(page)) {
- printk("forget_pte: old mapping existed!\n");
- BUG();
- }
-}
-
-static inline int zap_pte_range(mmu_gather_t *tlb, pmd_t * pmd, unsigned long
address, unsigned long size)
-{
- unsigned long offset;
- pte_t * ptep;
- int freed = 0;
-
- if (pmd_none(*pmd))
- return 0;
- if (pmd_bad(*pmd)) {
- pmd_ERROR(*pmd);
- pmd_clear(pmd);
- return 0;
- }
- ptep = pte_offset(pmd, address);
- offset = address & ~PMD_MASK;
- if (offset + size > PMD_SIZE)
- size = PMD_SIZE - offset;
- size &= PAGE_MASK;
- for (offset=0; offset < size; ptep++, offset += PAGE_SIZE) {
- pte_t pte = *ptep;
- if (pte_none(pte))
- continue;
- if (pte_present(pte)) {
- struct page *page = pte_page(pte);
- if (VALID_PAGE(page) && !PageReserved(page))
- freed ++;
- /* This will eventually call __free_pte on the pte. */
- tlb_remove_page(tlb, ptep, address + offset);
- } else {
- free_swap_and_cache(pte_to_swp_entry(pte));
- pte_clear(ptep);
- }
- }
-
- return freed;
-}
-
-static inline int zap_pmd_range(mmu_gather_t *tlb, pgd_t * dir, unsigned long
address, unsigned long size)
-{
- pmd_t * pmd;
- unsigned long end;
- int freed;
-
- if (pgd_none(*dir))
- return 0;
- if (pgd_bad(*dir)) {
- pgd_ERROR(*dir);
- pgd_clear(dir);
- return 0;
- }
- pmd = pmd_offset(dir, address);
- end = address + size;
- if (end > ((address + PGDIR_SIZE) & PGDIR_MASK))
- end = ((address + PGDIR_SIZE) & PGDIR_MASK);
- freed = 0;
- do {
- freed += zap_pte_range(tlb, pmd, address, end - address);
- address = (address + PMD_SIZE) & PMD_MASK;
- pmd++;
- } while (address < end);
- return freed;
-}
-
-/*
- * remove user pages in a given range.
- */
-void zap_page_range(struct mm_struct *mm, unsigned long address, unsigned long
size)
-{
- mmu_gather_t *tlb;
- pgd_t * dir;
- unsigned long start = address, end = address + size;
- int freed = 0;
-
- dir = pgd_offset(mm, address);
-
- /*
- * This is a long-lived spinlock. That's fine.
- * There's no contention, because the page table
- * lock only protects against kswapd anyway, and
- * even if kswapd happened to be looking at this
- * process we _want_ it to get stuck.
- */
- if (address >= end)
- BUG();
- spin_lock(&mm->page_table_lock);
- flush_cache_range(mm, address, end);
- tlb = tlb_gather_mmu(mm);
-
- do {
- freed += zap_pmd_range(tlb, dir, address, end - address);
- address = (address + PGDIR_SIZE) & PGDIR_MASK;
- dir++;
- } while (address && (address < end));
-
- /* this will flush any remaining tlb entries */
- tlb_finish_mmu(tlb, start, end);
-
- /*
- * Update rss for the mm_struct (not necessarily current->mm)
- * Notice that rss is an unsigned long.
- */
- if (mm->rss > freed)
- mm->rss -= freed;
- else
- mm->rss = 0;
- spin_unlock(&mm->page_table_lock);
-}
-
-/*
- * Do a quick page-table lookup for a single page.
- */
-static struct page * follow_page(struct mm_struct *mm, unsigned long address,
int write)
-{
- pgd_t *pgd;
- pmd_t *pmd;
- pte_t *ptep, pte;
-
- pgd = pgd_offset(mm, address);
- if (pgd_none(*pgd) || pgd_bad(*pgd))
- goto out;
-
- pmd = pmd_offset(pgd, address);
- if (pmd_none(*pmd) || pmd_bad(*pmd))
- goto out;
-
- ptep = pte_offset(pmd, address);
- if (!ptep)
- goto out;
-
- pte = *ptep;
- if (pte_present(pte)) {
- if (!write ||
- (pte_write(pte) && pte_dirty(pte)))
- return pte_page(pte);
- }
-
-out:
- return 0;
-}
-
-/*
- * Given a physical address, is there a useful struct page pointing to
- * it? This may become more complex in the future if we start dealing
- * with IO-aperture pages in kiobufs.
- */
-
-static inline struct page * get_page_map(struct page *page)
-{
- if (!VALID_PAGE(page))
- return 0;
- return page;
-}
-
-/*
- * Please read Documentation/cachetlb.txt before using this function,
- * accessing foreign memory spaces can cause cache coherency problems.
- *
- * Accessing a VM_IO area is even more dangerous, therefore the function
- * fails if pages is != NULL and a VM_IO area is found.
- */
-int get_user_pages(struct task_struct *tsk, struct mm_struct *mm, unsigned
long start,
- int len, int write, int force, struct page **pages, struct
vm_area_struct **vmas)
-{
- int i;
- unsigned int flags;
-
- /*
- * Require read or write permissions.
- * If 'force' is set, we only require the "MAY" flags.
- */
- flags = write ? (VM_WRITE | VM_MAYWRITE) : (VM_READ | VM_MAYREAD);
- flags &= force ? (VM_MAYREAD | VM_MAYWRITE) : (VM_READ | VM_WRITE);
- i = 0;
-
- do {
- struct vm_area_struct * vma;
-
- vma = find_extend_vma(mm, start);
-
- if ( !vma || (pages && vma->vm_flags & VM_IO) || !(flags &
vma->vm_flags) )
- return i ? : -EFAULT;
-
- spin_lock(&mm->page_table_lock);
- do {
- struct page *map;
- while (!(map = follow_page(mm, start, write))) {
- spin_unlock(&mm->page_table_lock);
- switch (handle_mm_fault(mm, vma, start, write))
{
- case 1:
- tsk->min_flt++;
- break;
- case 2:
- tsk->maj_flt++;
- break;
- case 0:
- if (i) return i;
- return -EFAULT;
- default:
- if (i) return i;
- return -ENOMEM;
- }
- spin_lock(&mm->page_table_lock);
- }
- if (pages) {
- pages[i] = get_page_map(map);
- /* FIXME: call the correct function,
- * depending on the type of the found page
- */
- if (!pages[i] || PageReserved(pages[i])) {
- if (pages[i] != ZERO_PAGE(start))
- goto bad_page;
- } else
- page_cache_get(pages[i]);
- }
- if (vmas)
- vmas[i] = vma;
- i++;
- start += PAGE_SIZE;
- len--;
- } while(len && start < vma->vm_end);
- spin_unlock(&mm->page_table_lock);
- } while(len);
-out:
- return i;
-
- /*
- * We found an invalid page in the VMA. Release all we have
- * so far and fail.
- */
-bad_page:
- spin_unlock(&mm->page_table_lock);
- while (i--)
- page_cache_release(pages[i]);
- i = -EFAULT;
- goto out;
-}
-
-EXPORT_SYMBOL(get_user_pages);
-
-/*
- * Force in an entire range of pages from the current process's user VA,
- * and pin them in physical memory.
- */
-#define dprintk(x...)
-
-int map_user_kiobuf(int rw, struct kiobuf *iobuf, unsigned long va, size_t len)
-{
- int pgcount, err;
- struct mm_struct * mm;
-
- /* Make sure the iobuf is not already mapped somewhere. */
- if (iobuf->nr_pages)
- return -EINVAL;
-
- mm = current->mm;
- dprintk ("map_user_kiobuf: begin\n");
-
- pgcount = (va + len + PAGE_SIZE - 1)/PAGE_SIZE - va/PAGE_SIZE;
- /* mapping 0 bytes is not permitted */
- if (!pgcount) BUG();
- err = expand_kiobuf(iobuf, pgcount);
- if (err)
- return err;
-
- iobuf->locked = 0;
- iobuf->offset = va & (PAGE_SIZE-1);
- iobuf->length = len;
-
- /* Try to fault in all of the necessary pages */
- down_read(&mm->mmap_sem);
- /* rw==READ means read from disk, write into memory area */
- err = get_user_pages(current, mm, va, pgcount,
- (rw==READ), 0, iobuf->maplist, NULL);
- up_read(&mm->mmap_sem);
- if (err < 0) {
- unmap_kiobuf(iobuf);
- dprintk ("map_user_kiobuf: end %d\n", err);
- return err;
- }
- iobuf->nr_pages = err;
- while (pgcount--) {
- /* FIXME: flush superflous for rw==READ,
- * probably wrong function for rw==WRITE
- */
- flush_dcache_page(iobuf->maplist[pgcount]);
- }
- dprintk ("map_user_kiobuf: end OK\n");
- return 0;
-}
-
-/*
- * Mark all of the pages in a kiobuf as dirty
- *
- * We need to be able to deal with short reads from disk: if an IO error
- * occurs, the number of bytes read into memory may be less than the
- * size of the kiobuf, so we have to stop marking pages dirty once the
- * requested byte count has been reached.
- *
- * Must be called from process context - set_page_dirty() takes VFS locks.
- */
-
-void mark_dirty_kiobuf(struct kiobuf *iobuf, int bytes)
-{
- int index, offset, remaining;
- struct page *page;
-
- index = iobuf->offset >> PAGE_SHIFT;
- offset = iobuf->offset & ~PAGE_MASK;
- remaining = bytes;
- if (remaining > iobuf->length)
- remaining = iobuf->length;
-
- while (remaining > 0 && index < iobuf->nr_pages) {
- page = iobuf->maplist[index];
-
- if (!PageReserved(page))
- set_page_dirty(page);
-
- remaining -= (PAGE_SIZE - offset);
- offset = 0;
- index++;
- }
-}
-
-/*
- * Unmap all of the pages referenced by a kiobuf. We release the pages,
- * and unlock them if they were locked.
- */
-
-void unmap_kiobuf (struct kiobuf *iobuf)
-{
- int i;
- struct page *map;
-
- for (i = 0; i < iobuf->nr_pages; i++) {
- map = iobuf->maplist[i];
- if (map) {
- if (iobuf->locked)
- UnlockPage(map);
- /* FIXME: cache flush missing for rw==READ
- * FIXME: call the correct reference counting function
- */
- page_cache_release(map);
- }
- }
-
- iobuf->nr_pages = 0;
- iobuf->locked = 0;
-}
-
-
-/*
- * Lock down all of the pages of a kiovec for IO.
- *
- * If any page is mapped twice in the kiovec, we return the error -EINVAL.
- *
- * The optional wait parameter causes the lock call to block until all
- * pages can be locked if set. If wait==0, the lock operation is
- * aborted if any locked pages are found and -EAGAIN is returned.
- */
-
-int lock_kiovec(int nr, struct kiobuf *iovec[], int wait)
-{
- struct kiobuf *iobuf;
- int i, j;
- struct page *page, **ppage;
- int doublepage = 0;
- int repeat = 0;
-
- repeat:
-
- for (i = 0; i < nr; i++) {
- iobuf = iovec[i];
-
- if (iobuf->locked)
- continue;
-
- ppage = iobuf->maplist;
- for (j = 0; j < iobuf->nr_pages; ppage++, j++) {
- page = *ppage;
- if (!page)
- continue;
-
- if (TryLockPage(page)) {
- while (j--) {
- struct page *tmp = *--ppage;
- if (tmp)
- UnlockPage(tmp);
- }
- goto retry;
- }
- }
- iobuf->locked = 1;
- }
-
- return 0;
-
- retry:
-
- /*
- * We couldn't lock one of the pages. Undo the locking so far,
- * wait on the page we got to, and try again.
- */
-
- unlock_kiovec(nr, iovec);
- if (!wait)
- return -EAGAIN;
-
- /*
- * Did the release also unlock the page we got stuck on?
- */
- if (!PageLocked(page)) {
- /*
- * If so, we may well have the page mapped twice
- * in the IO address range. Bad news. Of
- * course, it _might_ just be a coincidence,
- * but if it happens more than once, chances
- * are we have a double-mapped page.
- */
- if (++doublepage >= 3)
- return -EINVAL;
-
- /* Try again... */
- wait_on_page(page);
- }
-
- if (++repeat < 16)
- goto repeat;
- return -EAGAIN;
-}
-
-/*
- * Unlock all of the pages of a kiovec after IO.
- */
-
-int unlock_kiovec(int nr, struct kiobuf *iovec[])
-{
- struct kiobuf *iobuf;
- int i, j;
- struct page *page, **ppage;
-
- for (i = 0; i < nr; i++) {
- iobuf = iovec[i];
-
- if (!iobuf->locked)
- continue;
- iobuf->locked = 0;
-
- ppage = iobuf->maplist;
- for (j = 0; j < iobuf->nr_pages; ppage++, j++) {
- page = *ppage;
- if (!page)
- continue;
- UnlockPage(page);
- }
- }
- return 0;
-}
-
-static inline void zeromap_pte_range(pte_t * pte, unsigned long address,
- unsigned long size, pgprot_t prot)
-{
- unsigned long end;
-
- address &= ~PMD_MASK;
- end = address + size;
- if (end > PMD_SIZE)
- end = PMD_SIZE;
- do {
- pte_t zero_pte = pte_wrprotect(mk_pte(ZERO_PAGE(address),
prot));
- pte_t oldpage = ptep_get_and_clear(pte);
- set_pte(pte, zero_pte);
- forget_pte(oldpage);
- address += PAGE_SIZE;
- pte++;
- } while (address && (address < end));
-}
-
-static inline int zeromap_pmd_range(struct mm_struct *mm, pmd_t * pmd,
unsigned long address,
- unsigned long size, pgprot_t prot)
-{
- unsigned long end;
-
- address &= ~PGDIR_MASK;
- end = address + size;
- if (end > PGDIR_SIZE)
- end = PGDIR_SIZE;
- do {
- pte_t * pte = pte_alloc(mm, pmd, address);
- if (!pte)
- return -ENOMEM;
- zeromap_pte_range(pte, address, end - address, prot);
- address = (address + PMD_SIZE) & PMD_MASK;
- pmd++;
- } while (address && (address < end));
- return 0;
-}
-
-int zeromap_page_range(unsigned long address, unsigned long size, pgprot_t
prot)
-{
- int error = 0;
- pgd_t * dir;
- unsigned long beg = address;
- unsigned long end = address + size;
- struct mm_struct *mm = current->mm;
-
- dir = pgd_offset(mm, address);
- flush_cache_range(mm, beg, end);
- if (address >= end)
- BUG();
-
- spin_lock(&mm->page_table_lock);
- do {
- pmd_t *pmd = pmd_alloc(mm, dir, address);
- error = -ENOMEM;
- if (!pmd)
- break;
- error = zeromap_pmd_range(mm, pmd, address, end - address,
prot);
- if (error)
- break;
- address = (address + PGDIR_SIZE) & PGDIR_MASK;
- dir++;
- } while (address && (address < end));
- spin_unlock(&mm->page_table_lock);
- flush_tlb_range(mm, beg, end);
- return error;
-}
-
-/*
- * maps a range of physical memory into the requested pages. the old
- * mappings are removed. any references to nonexistent pages results
- * in null mappings (currently treated as "copy-on-access")
- */
-static inline void remap_pte_range(pte_t * pte, unsigned long address,
unsigned long size,
- unsigned long phys_addr, pgprot_t prot)
-{
- unsigned long end;
-
- address &= ~PMD_MASK;
- end = address + size;
- if (end > PMD_SIZE)
- end = PMD_SIZE;
- do {
- struct page *page;
- pte_t oldpage;
- oldpage = ptep_get_and_clear(pte);
-
- page = virt_to_page(__va(phys_addr));
- if ((!VALID_PAGE(page)) || PageReserved(page))
- set_pte(pte, mk_pte_phys(phys_addr, prot));
- forget_pte(oldpage);
- address += PAGE_SIZE;
- phys_addr += PAGE_SIZE;
- pte++;
- } while (address && (address < end));
-}
-
-static inline int remap_pmd_range(struct mm_struct *mm, pmd_t * pmd, unsigned
long address, unsigned long size,
- unsigned long phys_addr, pgprot_t prot)
-{
- unsigned long end;
-
- address &= ~PGDIR_MASK;
- end = address + size;
- if (end > PGDIR_SIZE)
- end = PGDIR_SIZE;
- phys_addr -= address;
- do {
- pte_t * pte = pte_alloc(mm, pmd, address);
- if (!pte)
- return -ENOMEM;
- remap_pte_range(pte, address, end - address, address +
phys_addr, prot);
- address = (address + PMD_SIZE) & PMD_MASK;
- pmd++;
- } while (address && (address < end));
- return 0;
-}
-
-/* Note: this is only safe if the mm semaphore is held when called. */
-int remap_page_range(unsigned long from, unsigned long phys_addr, unsigned
long size, pgprot_t prot)
-{
- int error = 0;
- pgd_t * dir;
- unsigned long beg = from;
- unsigned long end = from + size;
- struct mm_struct *mm = current->mm;
-
- phys_addr -= from;
- dir = pgd_offset(mm, from);
- flush_cache_range(mm, beg, end);
- if (from >= end)
- BUG();
-
- spin_lock(&mm->page_table_lock);
- do {
- pmd_t *pmd = pmd_alloc(mm, dir, from);
- error = -ENOMEM;
- if (!pmd)
- break;
- error = remap_pmd_range(mm, pmd, from, end - from, phys_addr +
from, prot);
- if (error)
- break;
- from = (from + PGDIR_SIZE) & PGDIR_MASK;
- dir++;
- } while (from && (from < end));
- spin_unlock(&mm->page_table_lock);
- flush_tlb_range(mm, beg, end);
- return error;
-}
-
-/*
- * Establish a new mapping:
- * - flush the old one
- * - update the page tables
- * - inform the TLB about the new one
- *
- * We hold the mm semaphore for reading and vma->vm_mm->page_table_lock
- */
-static inline void establish_pte(struct vm_area_struct * vma, unsigned long
address, pte_t *page_table, pte_t entry)
-{
-#ifdef CONFIG_XEN
- if ( likely(vma->vm_mm == current->mm) ) {
- HYPERVISOR_update_va_mapping(address, entry,
UVMF_INVLPG|UVMF_LOCAL);
- } else {
- set_pte(page_table, entry);
- flush_tlb_page(vma, address);
- }
-#else
- set_pte(page_table, entry);
- flush_tlb_page(vma, address);
-#endif
- update_mmu_cache(vma, address, entry);
-}
-
-/*
- * We hold the mm semaphore for reading and vma->vm_mm->page_table_lock
- */
-static inline void break_cow(struct vm_area_struct * vma, struct page *
new_page, unsigned long address,
- pte_t *page_table)
-{
- flush_page_to_ram(new_page);
- flush_cache_page(vma, address);
- establish_pte(vma, address, page_table,
pte_mkwrite(pte_mkdirty(mk_pte(new_page, vma->vm_page_prot))));
-}
-
-/*
- * This routine handles present pages, when users try to write
- * to a shared page. It is done by copying the page to a new address
- * and decrementing the shared-page counter for the old page.
- *
- * Goto-purists beware: the only reason for goto's here is that it results
- * in better assembly code.. The "default" path will see no jumps at all.
- *
- * Note that this routine assumes that the protection checks have been
- * done by the caller (the low-level page fault routine in most cases).
- * Thus we can safely just mark it writable once we've done any necessary
- * COW.
- *
- * We also mark the page dirty at this point even though the page will
- * change only once the write actually happens. This avoids a few races,
- * and potentially makes it more efficient.
- *
- * We hold the mm semaphore and the page_table_lock on entry and exit
- * with the page_table_lock released.
- */
-static int do_wp_page(struct mm_struct *mm, struct vm_area_struct * vma,
- unsigned long address, pte_t *page_table, pte_t pte)
-{
- struct page *old_page, *new_page;
-
- old_page = pte_page(pte);
- if (!VALID_PAGE(old_page))
- goto bad_wp_page;
-
- if (!TryLockPage(old_page)) {
- int reuse = can_share_swap_page(old_page);
- unlock_page(old_page);
- if (reuse) {
- flush_cache_page(vma, address);
- establish_pte(vma, address, page_table,
pte_mkyoung(pte_mkdirty(pte_mkwrite(pte))));
- spin_unlock(&mm->page_table_lock);
- return 1; /* Minor fault */
- }
- }
-
- /*
- * Ok, we need to copy. Oh, well..
- */
- page_cache_get(old_page);
- spin_unlock(&mm->page_table_lock);
-
- new_page = alloc_page(GFP_HIGHUSER);
- if (!new_page)
- goto no_mem;
- copy_cow_page(old_page,new_page,address);
-
- /*
- * Re-check the pte - we dropped the lock
- */
- spin_lock(&mm->page_table_lock);
- if (pte_same(*page_table, pte)) {
- if (PageReserved(old_page))
- ++mm->rss;
- break_cow(vma, new_page, address, page_table);
- if (vm_anon_lru)
- lru_cache_add(new_page);
-
- /* Free the old page.. */
- new_page = old_page;
- }
- spin_unlock(&mm->page_table_lock);
- page_cache_release(new_page);
- page_cache_release(old_page);
- return 1; /* Minor fault */
-
-bad_wp_page:
- spin_unlock(&mm->page_table_lock);
- printk("do_wp_page: bogus page at address %08lx (page
0x%lx)\n",address,(unsigned long)old_page);
- return -1;
-no_mem:
- page_cache_release(old_page);
- return -1;
-}
-
-static void vmtruncate_list(struct vm_area_struct *mpnt, unsigned long pgoff)
-{
- do {
- struct mm_struct *mm = mpnt->vm_mm;
- unsigned long start = mpnt->vm_start;
- unsigned long end = mpnt->vm_end;
- unsigned long len = end - start;
- unsigned long diff;
-
- /* mapping wholly truncated? */
- if (mpnt->vm_pgoff >= pgoff) {
- zap_page_range(mm, start, len);
- continue;
- }
-
- /* mapping wholly unaffected? */
- len = len >> PAGE_SHIFT;
- diff = pgoff - mpnt->vm_pgoff;
- if (diff >= len)
- continue;
-
- /* Ok, partially affected.. */
- start += diff << PAGE_SHIFT;
- len = (len - diff) << PAGE_SHIFT;
- zap_page_range(mm, start, len);
- } while ((mpnt = mpnt->vm_next_share) != NULL);
-}
-
-/*
- * Handle all mappings that got truncated by a "truncate()"
- * system call.
- *
- * NOTE! We have to be ready to update the memory sharing
- * between the file and the memory map for a potential last
- * incomplete page. Ugly, but necessary.
- */
-int vmtruncate(struct inode * inode, loff_t offset)
-{
- unsigned long pgoff;
- struct address_space *mapping = inode->i_mapping;
- unsigned long limit;
-
- if (inode->i_size < offset)
- goto do_expand;
- inode->i_size = offset;
- spin_lock(&mapping->i_shared_lock);
- if (!mapping->i_mmap && !mapping->i_mmap_shared)
- goto out_unlock;
-
- pgoff = (offset + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
- if (mapping->i_mmap != NULL)
- vmtruncate_list(mapping->i_mmap, pgoff);
- if (mapping->i_mmap_shared != NULL)
- vmtruncate_list(mapping->i_mmap_shared, pgoff);
-
-out_unlock:
- spin_unlock(&mapping->i_shared_lock);
- truncate_inode_pages(mapping, offset);
- goto out_truncate;
-
-do_expand:
- limit = current->rlim[RLIMIT_FSIZE].rlim_cur;
- if (limit != RLIM_INFINITY && offset > limit)
- goto out_sig;
- if (offset > inode->i_sb->s_maxbytes)
- goto out;
- inode->i_size = offset;
-
-out_truncate:
- if (inode->i_op && inode->i_op->truncate) {
- lock_kernel();
- inode->i_op->truncate(inode);
- unlock_kernel();
- }
- return 0;
-out_sig:
- send_sig(SIGXFSZ, current, 0);
-out:
- return -EFBIG;
-}
-
-/*
- * Primitive swap readahead code. We simply read an aligned block of
- * (1 << page_cluster) entries in the swap area. This method is chosen
- * because it doesn't cost us any seek time. We also make sure to queue
- * the 'original' request together with the readahead ones...
- */
-void swapin_readahead(swp_entry_t entry)
-{
- int i, num;
- struct page *new_page;
- unsigned long offset;
-
- /*
- * Get the number of handles we should do readahead io to.
- */
- num = valid_swaphandles(entry, &offset);
- for (i = 0; i < num; offset++, i++) {
- /* Ok, do the async read-ahead now */
- new_page = read_swap_cache_async(SWP_ENTRY(SWP_TYPE(entry),
offset));
- if (!new_page)
- break;
- page_cache_release(new_page);
- }
- return;
-}
-
-/*
- * We hold the mm semaphore and the page_table_lock on entry and
- * should release the pagetable lock on exit..
- */
-static int do_swap_page(struct mm_struct * mm,
- struct vm_area_struct * vma, unsigned long address,
- pte_t * page_table, pte_t orig_pte, int write_access)
-{
- struct page *page;
- swp_entry_t entry = pte_to_swp_entry(orig_pte);
- pte_t pte;
- int ret = 1;
-
- spin_unlock(&mm->page_table_lock);
- page = lookup_swap_cache(entry);
- if (!page) {
- swapin_readahead(entry);
- page = read_swap_cache_async(entry);
- if (!page) {
- /*
- * Back out if somebody else faulted in this pte while
- * we released the page table lock.
- */
- int retval;
- spin_lock(&mm->page_table_lock);
- retval = pte_same(*page_table, orig_pte) ? -1 : 1;
- spin_unlock(&mm->page_table_lock);
- return retval;
- }
-
- /* Had to read the page from swap area: Major fault */
- ret = 2;
- }
-
- mark_page_accessed(page);
-
- lock_page(page);
-
- /*
- * Back out if somebody else faulted in this pte while we
- * released the page table lock.
- */
- spin_lock(&mm->page_table_lock);
- if (!pte_same(*page_table, orig_pte)) {
- spin_unlock(&mm->page_table_lock);
- unlock_page(page);
- page_cache_release(page);
- return 1;
- }
-
- /* The page isn't present yet, go ahead with the fault. */
-
- swap_free(entry);
- if (vm_swap_full())
- remove_exclusive_swap_page(page);
-
- mm->rss++;
- pte = mk_pte(page, vma->vm_page_prot);
- if (write_access && can_share_swap_page(page))
- pte = pte_mkdirty(pte_mkwrite(pte));
- unlock_page(page);
-
- flush_page_to_ram(page);
- flush_icache_page(vma, page);
-#ifdef CONFIG_XEN
- if ( likely(vma->vm_mm == current->mm) )
- HYPERVISOR_update_va_mapping(address, pte, 0);
- else
- set_pte(page_table, pte);
-#else
- set_pte(page_table, pte);
-#endif
-
- /* No need to invalidate - it was non-present before */
- update_mmu_cache(vma, address, pte);
- spin_unlock(&mm->page_table_lock);
- return ret;
-}
-
-/*
- * We are called with the MM semaphore and page_table_lock
- * spinlock held to protect against concurrent faults in
- * multithreaded programs.
- */
-static int do_anonymous_page(struct mm_struct * mm, struct vm_area_struct *
vma, pte_t *page_table, int write_access, unsigned long addr)
-{
- pte_t entry;
-
- /* Read-only mapping of ZERO_PAGE. */
- entry = pte_wrprotect(mk_pte(ZERO_PAGE(addr), vma->vm_page_prot));
-
- /* ..except if it's a write access */
- if (write_access) {
- struct page *page;
-
- /* Allocate our own private page. */
- spin_unlock(&mm->page_table_lock);
-
- page = alloc_page(GFP_HIGHUSER);
- if (!page)
- goto no_mem;
- clear_user_highpage(page, addr);
-
- spin_lock(&mm->page_table_lock);
- if (!pte_none(*page_table)) {
- page_cache_release(page);
- spin_unlock(&mm->page_table_lock);
- return 1;
- }
- mm->rss++;
- flush_page_to_ram(page);
- entry = pte_mkwrite(pte_mkdirty(mk_pte(page,
vma->vm_page_prot)));
- if (vm_anon_lru)
- lru_cache_add(page);
- mark_page_accessed(page);
- }
-
-#ifdef CONFIG_XEN
- if ( likely(vma->vm_mm == current->mm) )
- HYPERVISOR_update_va_mapping(addr, entry, 0);
- else
- set_pte(page_table, entry);
-#else
- set_pte(page_table, entry);
-#endif
-
- /* No need to invalidate - it was non-present before */
- update_mmu_cache(vma, addr, entry);
- spin_unlock(&mm->page_table_lock);
- return 1; /* Minor fault */
-
-no_mem:
- return -1;
-}
-
-/*
- * do_no_page() tries to create a new page mapping. It aggressively
- * tries to share with existing pages, but makes a separate copy if
- * the "write_access" parameter is true in order to avoid the next
- * page fault.
- *
- * As this is called only for pages that do not currently exist, we
- * do not need to flush old virtual caches or the TLB.
- *
- * This is called with the MM semaphore held and the page table
- * spinlock held. Exit with the spinlock released.
- */
-static int do_no_page(struct mm_struct * mm, struct vm_area_struct * vma,
- unsigned long address, int write_access, pte_t *page_table)
-{
- struct page * new_page;
- pte_t entry;
-
- if (!vma->vm_ops || !vma->vm_ops->nopage)
- return do_anonymous_page(mm, vma, page_table, write_access,
address);
- spin_unlock(&mm->page_table_lock);
-
- new_page = vma->vm_ops->nopage(vma, address & PAGE_MASK, 0);
-
- if (new_page == NULL) /* no page was available -- SIGBUS */
- return 0;
- if (new_page == NOPAGE_OOM)
- return -1;
-
- /*
- * Should we do an early C-O-W break?
- */
- if (write_access && !(vma->vm_flags & VM_SHARED)) {
- struct page * page = alloc_page(GFP_HIGHUSER);
- if (!page) {
- page_cache_release(new_page);
- return -1;
- }
- copy_user_highpage(page, new_page, address);
- page_cache_release(new_page);
- if (vm_anon_lru)
- lru_cache_add(page);
- new_page = page;
- }
-
- spin_lock(&mm->page_table_lock);
- /*
- * This silly early PAGE_DIRTY setting removes a race
- * due to the bad i386 page protection. But it's valid
- * for other architectures too.
- *
- * Note that if write_access is true, we either now have
- * an exclusive copy of the page, or this is a shared mapping,
- * so we can make it writable and dirty to avoid having to
- * handle that later.
- */
- /* Only go through if we didn't race with anybody else... */
- if (pte_none(*page_table)) {
- if (!PageReserved(new_page))
- ++mm->rss;
- flush_page_to_ram(new_page);
- flush_icache_page(vma, new_page);
- entry = mk_pte(new_page, vma->vm_page_prot);
- if (write_access)
- entry = pte_mkwrite(pte_mkdirty(entry));
-#ifdef CONFIG_XEN
- if ( likely(vma->vm_mm == current->mm) )
- HYPERVISOR_update_va_mapping(address, entry, 0);
- else
- set_pte(page_table, entry);
-#else
- set_pte(page_table, entry);
-#endif
- } else {
- /* One of our sibling threads was faster, back out. */
- page_cache_release(new_page);
- spin_unlock(&mm->page_table_lock);
- return 1;
- }
-
- /* no need to invalidate: a not-present page shouldn't be cached */
- update_mmu_cache(vma, address, entry);
- spin_unlock(&mm->page_table_lock);
- return 2; /* Major fault */
-}
-
-/*
- * These routines also need to handle stuff like marking pages dirty
- * and/or accessed for architectures that don't do it in hardware (most
- * RISC architectures). The early dirtying is also good on the i386.
- *
- * There is also a hook called "update_mmu_cache()" that architectures
- * with external mmu caches can use to update those (ie the Sparc or
- * PowerPC hashed page tables that act as extended TLBs).
- *
- * Note the "page_table_lock". It is to protect against kswapd removing
- * pages from under us. Note that kswapd only ever _removes_ pages, never
- * adds them. As such, once we have noticed that the page is not present,
- * we can drop the lock early.
- *
- * The adding of pages is protected by the MM semaphore (which we hold),
- * so we don't need to worry about a page being suddenly been added into
- * our VM.
- *
- * We enter with the pagetable spinlock held, we are supposed to
- * release it when done.
- */
-static inline int handle_pte_fault(struct mm_struct *mm,
- struct vm_area_struct * vma, unsigned long address,
- int write_access, pte_t * pte)
-{
- pte_t entry;
-
- entry = *pte;
- if (!pte_present(entry)) {
- /*
- * If it truly wasn't present, we know that kswapd
- * and the PTE updates will not touch it later. So
- * drop the lock.
- */
- if (pte_none(entry))
- return do_no_page(mm, vma, address, write_access, pte);
- return do_swap_page(mm, vma, address, pte, entry, write_access);
- }
-
- if (write_access) {
- if (!pte_write(entry))
- return do_wp_page(mm, vma, address, pte, entry);
-
- entry = pte_mkdirty(entry);
- }
- entry = pte_mkyoung(entry);
- establish_pte(vma, address, pte, entry);
- spin_unlock(&mm->page_table_lock);
- return 1;
-}
-
-/*
- * By the time we get here, we already hold the mm semaphore
- */
-int handle_mm_fault(struct mm_struct *mm, struct vm_area_struct * vma,
- unsigned long address, int write_access)
-{
- pgd_t *pgd;
- pmd_t *pmd;
-
- current->state = TASK_RUNNING;
- pgd = pgd_offset(mm, address);
-
- /*
- * We need the page table lock to synchronize with kswapd
- * and the SMP-safe atomic PTE updates.
- */
- spin_lock(&mm->page_table_lock);
- pmd = pmd_alloc(mm, pgd, address);
-
- if (pmd) {
- pte_t * pte = pte_alloc(mm, pmd, address);
- if (pte)
- return handle_pte_fault(mm, vma, address, write_access,
pte);
- }
- spin_unlock(&mm->page_table_lock);
- return -1;
-}
-
-/*
- * Allocate page middle directory.
- *
- * We've already handled the fast-path in-line, and we own the
- * page table lock.
- *
- * On a two-level page table, this ends up actually being entirely
- * optimized away.
- */
-pmd_t fastcall *__pmd_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long
address)
-{
- pmd_t *new;
-
- /* "fast" allocation can happen without dropping the lock.. */
- new = pmd_alloc_one_fast(mm, address);
- if (!new) {
- spin_unlock(&mm->page_table_lock);
- new = pmd_alloc_one(mm, address);
- spin_lock(&mm->page_table_lock);
- if (!new)
- return NULL;
-
- /*
- * Because we dropped the lock, we should re-check the
- * entry, as somebody else could have populated it..
- */
- if (!pgd_none(*pgd)) {
- pmd_free(new);
- check_pgt_cache();
- goto out;
- }
- }
- pgd_populate(mm, pgd, new);
-out:
- return pmd_offset(pgd, address);
-}
-
-/*
- * Allocate the page table directory.
- *
- * We've already handled the fast-path in-line, and we own the
- * page table lock.
- */
-pte_t fastcall *pte_alloc(struct mm_struct *mm, pmd_t *pmd, unsigned long
address)
-{
- if (pmd_none(*pmd)) {
- pte_t *new;
-
- /* "fast" allocation can happen without dropping the lock.. */
- new = pte_alloc_one_fast(mm, address);
- if (!new) {
- spin_unlock(&mm->page_table_lock);
- new = pte_alloc_one(mm, address);
- spin_lock(&mm->page_table_lock);
- if (!new)
- return NULL;
-
- /*
- * Because we dropped the lock, we should re-check the
- * entry, as somebody else could have populated it..
- */
- if (!pmd_none(*pmd)) {
- pte_free(new);
- check_pgt_cache();
- goto out;
- }
- }
- pmd_populate(mm, pmd, new);
- }
-out:
- return pte_offset(pmd, address);
-}
-
-int make_pages_present(unsigned long addr, unsigned long end)
-{
- int ret, len, write;
- struct vm_area_struct * vma;
-
- vma = find_vma(current->mm, addr);
- write = (vma->vm_flags & VM_WRITE) != 0;
- if (addr >= end)
- BUG();
- if (end > vma->vm_end)
- BUG();
- len = (end+PAGE_SIZE-1)/PAGE_SIZE-addr/PAGE_SIZE;
- ret = get_user_pages(current, current->mm, addr,
- len, write, 0, NULL, NULL);
- return ret == len ? 0 : -1;
-}
-
-struct page * vmalloc_to_page(void * vmalloc_addr)
-{
- unsigned long addr = (unsigned long) vmalloc_addr;
- struct page *page = NULL;
- pmd_t *pmd;
- pte_t *pte;
- pgd_t *pgd;
-
- pgd = pgd_offset_k(addr);
- if (!pgd_none(*pgd)) {
- pmd = pmd_offset(pgd, addr);
- if (!pmd_none(*pmd)) {
- pte = pte_offset(pmd, addr);
- if (pte_present(*pte)) {
- page = pte_page(*pte);
- }
- }
- }
- return page;
-}
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.4.30-xen-sparse/mm/mprotect.c
--- a/linux-2.4.30-xen-sparse/mm/mprotect.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,344 +0,0 @@
-/*
- * linux/mm/mprotect.c
- *
- * (C) Copyright 1994 Linus Torvalds
- */
-#include <linux/slab.h>
-#include <linux/smp_lock.h>
-#include <linux/shm.h>
-#include <linux/mman.h>
-
-#include <asm/uaccess.h>
-#include <asm/pgalloc.h>
-#include <asm/pgtable.h>
-
-static inline void change_pte_range(pmd_t * pmd, unsigned long address,
- unsigned long size, pgprot_t newprot)
-{
- pte_t * pte;
- unsigned long end;
-
- if (pmd_none(*pmd))
- return;
- if (pmd_bad(*pmd)) {
- pmd_ERROR(*pmd);
- pmd_clear(pmd);
- return;
- }
- pte = pte_offset(pmd, address);
- address &= ~PMD_MASK;
- end = address + size;
- if (end > PMD_SIZE)
- end = PMD_SIZE;
- do {
- if (pte_present(*pte)) {
- pte_t entry;
-
- /* Avoid an SMP race with hardware updated dirty/clean
- * bits by wiping the pte and then setting the new pte
- * into place.
- */
- entry = ptep_get_and_clear(pte);
- set_pte(pte, pte_modify(entry, newprot));
- }
- address += PAGE_SIZE;
- pte++;
- } while (address && (address < end));
-}
-
-static inline void change_pmd_range(pgd_t * pgd, unsigned long address,
- unsigned long size, pgprot_t newprot)
-{
- pmd_t * pmd;
- unsigned long end;
-
- if (pgd_none(*pgd))
- return;
- if (pgd_bad(*pgd)) {
- pgd_ERROR(*pgd);
- pgd_clear(pgd);
- return;
- }
- pmd = pmd_offset(pgd, address);
- address &= ~PGDIR_MASK;
- end = address + size;
- if (end > PGDIR_SIZE)
- end = PGDIR_SIZE;
- do {
- change_pte_range(pmd, address, end - address, newprot);
- address = (address + PMD_SIZE) & PMD_MASK;
- pmd++;
- } while (address && (address < end));
-}
-
-static void change_protection(unsigned long start, unsigned long end, pgprot_t
newprot)
-{
- pgd_t *dir;
- unsigned long beg = start;
-
- dir = pgd_offset(current->mm, start);
- flush_cache_range(current->mm, beg, end);
- if (start >= end)
- BUG();
- spin_lock(¤t->mm->page_table_lock);
- do {
- change_pmd_range(dir, start, end - start, newprot);
- start = (start + PGDIR_SIZE) & PGDIR_MASK;
- dir++;
- } while (start && (start < end));
- spin_unlock(¤t->mm->page_table_lock);
- flush_tlb_range(current->mm, beg, end);
- return;
-}
-
-static inline int mprotect_fixup_all(struct vm_area_struct * vma, struct
vm_area_struct ** pprev,
- int newflags, pgprot_t prot)
-{
- struct vm_area_struct * prev = *pprev;
- struct mm_struct * mm = vma->vm_mm;
-
- if (prev && prev->vm_end == vma->vm_start && can_vma_merge(prev,
newflags) &&
- !vma->vm_file && !(vma->vm_flags & VM_SHARED)) {
- spin_lock(&mm->page_table_lock);
- prev->vm_end = vma->vm_end;
- __vma_unlink(mm, vma, prev);
- spin_unlock(&mm->page_table_lock);
-
- kmem_cache_free(vm_area_cachep, vma);
- mm->map_count--;
-
- return 0;
- }
-
- spin_lock(&mm->page_table_lock);
- vma->vm_flags = newflags;
- vma->vm_page_prot = prot;
- spin_unlock(&mm->page_table_lock);
-
- *pprev = vma;
-
- return 0;
-}
-
-static inline int mprotect_fixup_start(struct vm_area_struct * vma, struct
vm_area_struct ** pprev,
- unsigned long end,
- int newflags, pgprot_t prot)
-{
- struct vm_area_struct * n, * prev = *pprev;
-
- *pprev = vma;
-
- if (prev && prev->vm_end == vma->vm_start && can_vma_merge(prev,
newflags) &&
- !vma->vm_file && !(vma->vm_flags & VM_SHARED)) {
- spin_lock(&vma->vm_mm->page_table_lock);
- prev->vm_end = end;
- vma->vm_start = end;
- spin_unlock(&vma->vm_mm->page_table_lock);
-
- return 0;
- }
- n = kmem_cache_alloc(vm_area_cachep, SLAB_KERNEL);
- if (!n)
- return -ENOMEM;
- *n = *vma;
- n->vm_end = end;
- n->vm_flags = newflags;
- n->vm_raend = 0;
- n->vm_page_prot = prot;
- if (n->vm_file)
- get_file(n->vm_file);
- if (n->vm_ops && n->vm_ops->open)
- n->vm_ops->open(n);
- vma->vm_pgoff += (end - vma->vm_start) >> PAGE_SHIFT;
- lock_vma_mappings(vma);
- spin_lock(&vma->vm_mm->page_table_lock);
- vma->vm_start = end;
- __insert_vm_struct(current->mm, n);
- spin_unlock(&vma->vm_mm->page_table_lock);
- unlock_vma_mappings(vma);
-
- return 0;
-}
-
-static inline int mprotect_fixup_end(struct vm_area_struct * vma, struct
vm_area_struct ** pprev,
- unsigned long start,
- int newflags, pgprot_t prot)
-{
- struct vm_area_struct * n;
-
- n = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
- if (!n)
- return -ENOMEM;
- *n = *vma;
- n->vm_start = start;
- n->vm_pgoff += (n->vm_start - vma->vm_start) >> PAGE_SHIFT;
- n->vm_flags = newflags;
- n->vm_raend = 0;
- n->vm_page_prot = prot;
- if (n->vm_file)
- get_file(n->vm_file);
- if (n->vm_ops && n->vm_ops->open)
- n->vm_ops->open(n);
- lock_vma_mappings(vma);
- spin_lock(&vma->vm_mm->page_table_lock);
- vma->vm_end = start;
- __insert_vm_struct(current->mm, n);
- spin_unlock(&vma->vm_mm->page_table_lock);
- unlock_vma_mappings(vma);
-
- *pprev = n;
-
- return 0;
-}
-
-static inline int mprotect_fixup_middle(struct vm_area_struct * vma, struct
vm_area_struct ** pprev,
- unsigned long start, unsigned long end,
- int newflags, pgprot_t prot)
-{
- struct vm_area_struct * left, * right;
-
- left = kmem_cache_alloc(vm_area_cachep, SLAB_KERNEL);
- if (!left)
- return -ENOMEM;
- right = kmem_cache_alloc(vm_area_cachep, SLAB_KERNEL);
- if (!right) {
- kmem_cache_free(vm_area_cachep, left);
- return -ENOMEM;
- }
- *left = *vma;
- *right = *vma;
- left->vm_end = start;
- right->vm_start = end;
- right->vm_pgoff += (right->vm_start - left->vm_start) >> PAGE_SHIFT;
- left->vm_raend = 0;
- right->vm_raend = 0;
- if (vma->vm_file)
- atomic_add(2,&vma->vm_file->f_count);
- if (vma->vm_ops && vma->vm_ops->open) {
- vma->vm_ops->open(left);
- vma->vm_ops->open(right);
- }
- vma->vm_pgoff += (start - vma->vm_start) >> PAGE_SHIFT;
- vma->vm_raend = 0;
- vma->vm_page_prot = prot;
- lock_vma_mappings(vma);
- spin_lock(&vma->vm_mm->page_table_lock);
- vma->vm_start = start;
- vma->vm_end = end;
- vma->vm_flags = newflags;
- __insert_vm_struct(current->mm, left);
- __insert_vm_struct(current->mm, right);
- spin_unlock(&vma->vm_mm->page_table_lock);
- unlock_vma_mappings(vma);
-
- *pprev = right;
-
- return 0;
-}
-
-static int mprotect_fixup(struct vm_area_struct * vma, struct vm_area_struct
** pprev,
- unsigned long start, unsigned long end, unsigned int newflags)
-{
- pgprot_t newprot;
- int error;
-
- if (newflags == vma->vm_flags) {
- *pprev = vma;
- return 0;
- }
- newprot = protection_map[newflags & 0xf];
- if (start == vma->vm_start) {
- if (end == vma->vm_end)
- error = mprotect_fixup_all(vma, pprev, newflags,
newprot);
- else
- error = mprotect_fixup_start(vma, pprev, end, newflags,
newprot);
- } else if (end == vma->vm_end)
- error = mprotect_fixup_end(vma, pprev, start, newflags,
newprot);
- else
- error = mprotect_fixup_middle(vma, pprev, start, end, newflags,
newprot);
-
- if (error)
- return error;
-
- change_protection(start, end, newprot);
- return 0;
-}
-
-asmlinkage long sys_mprotect(unsigned long start, size_t len, unsigned long
prot)
-{
- unsigned long nstart, end, tmp;
- struct vm_area_struct * vma, * next, * prev;
- int error = -EINVAL;
-
- if (start & ~PAGE_MASK)
- return -EINVAL;
- len = PAGE_ALIGN(len);
- end = start + len;
- if (end < start)
- return -ENOMEM;
- if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
- return -EINVAL;
- if (end == start)
- return 0;
-
- down_write(¤t->mm->mmap_sem);
-
- vma = find_vma_prev(current->mm, start, &prev);
- error = -ENOMEM;
- if (!vma || vma->vm_start > start)
- goto out;
-
-#if defined(CONFIG_XEN_PRIVILEGED_GUEST)
- /* mprotect() unsupported for I/O mappings in Xenolinux. */
- error = -EINVAL;
- if (vma->vm_flags & VM_IO)
- goto out;
-#endif
-
- for (nstart = start ; ; ) {
- unsigned int newflags;
- int last = 0;
-
- /* Here we know that vma->vm_start <= nstart < vma->vm_end. */
-
- newflags = prot | (vma->vm_flags & ~(PROT_READ | PROT_WRITE |
PROT_EXEC));
- if ((newflags & ~(newflags >> 4)) & 0xf) {
- error = -EACCES;
- goto out;
- }
-
- if (vma->vm_end > end) {
- error = mprotect_fixup(vma, &prev, nstart, end,
newflags);
- goto out;
- }
- if (vma->vm_end == end)
- last = 1;
-
- tmp = vma->vm_end;
- next = vma->vm_next;
- error = mprotect_fixup(vma, &prev, nstart, tmp, newflags);
- if (error)
- goto out;
- if (last)
- break;
- nstart = tmp;
- vma = next;
- if (!vma || vma->vm_start != nstart) {
- error = -ENOMEM;
- goto out;
- }
- }
- if (next && prev->vm_end == next->vm_start && can_vma_merge(next,
prev->vm_flags) &&
- !prev->vm_file && !(prev->vm_flags & VM_SHARED)) {
- spin_lock(&prev->vm_mm->page_table_lock);
- prev->vm_end = next->vm_end;
- __vma_unlink(prev->vm_mm, next, prev);
- spin_unlock(&prev->vm_mm->page_table_lock);
-
- kmem_cache_free(vm_area_cachep, next);
- prev->vm_mm->map_count--;
- }
-out:
- up_write(¤t->mm->mmap_sem);
- return error;
-}
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.4.30-xen-sparse/mm/mremap.c
--- a/linux-2.4.30-xen-sparse/mm/mremap.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,390 +0,0 @@
-/*
- * linux/mm/remap.c
- *
- * (C) Copyright 1996 Linus Torvalds
- */
-
-#include <linux/slab.h>
-#include <linux/smp_lock.h>
-#include <linux/shm.h>
-#include <linux/mman.h>
-#include <linux/swap.h>
-
-#include <asm/uaccess.h>
-#include <asm/pgalloc.h>
-
-extern int vm_enough_memory(long pages);
-
-static inline pte_t *get_one_pte(struct mm_struct *mm, unsigned long addr)
-{
- pgd_t * pgd;
- pmd_t * pmd;
- pte_t * pte = NULL;
-
- pgd = pgd_offset(mm, addr);
- if (pgd_none(*pgd))
- goto end;
- if (pgd_bad(*pgd)) {
- pgd_ERROR(*pgd);
- pgd_clear(pgd);
- goto end;
- }
-
- pmd = pmd_offset(pgd, addr);
- if (pmd_none(*pmd))
- goto end;
- if (pmd_bad(*pmd)) {
- pmd_ERROR(*pmd);
- pmd_clear(pmd);
- goto end;
- }
-
- pte = pte_offset(pmd, addr);
- if (pte_none(*pte))
- pte = NULL;
-end:
- return pte;
-}
-
-static inline pte_t *alloc_one_pte(struct mm_struct *mm, unsigned long addr)
-{
- pmd_t * pmd;
- pte_t * pte = NULL;
-
- pmd = pmd_alloc(mm, pgd_offset(mm, addr), addr);
- if (pmd)
- pte = pte_alloc(mm, pmd, addr);
- return pte;
-}
-
-static inline int copy_one_pte(struct mm_struct *mm, pte_t * src, pte_t * dst)
-{
- int error = 0;
- pte_t pte;
-
- if (!pte_none(*src)) {
- pte = ptep_get_and_clear(src);
- if (!dst) {
- /* No dest? We must put it back. */
- dst = src;
- error++;
- }
- set_pte(dst, pte);
- }
- return error;
-}
-
-static int move_one_page(struct mm_struct *mm, unsigned long old_addr,
unsigned long new_addr)
-{
- int error = 0;
- pte_t * src, * dst;
-
- spin_lock(&mm->page_table_lock);
- src = get_one_pte(mm, old_addr);
- if (src) {
- dst = alloc_one_pte(mm, new_addr);
- src = get_one_pte(mm, old_addr);
- if (src)
- error = copy_one_pte(mm, src, dst);
- }
- spin_unlock(&mm->page_table_lock);
- return error;
-}
-
-static int move_page_tables(struct mm_struct * mm,
- unsigned long new_addr, unsigned long old_addr, unsigned long len)
-{
- unsigned long offset = len;
-
- flush_cache_range(mm, old_addr, old_addr + len);
-
- /*
- * This is not the clever way to do this, but we're taking the
- * easy way out on the assumption that most remappings will be
- * only a few pages.. This also makes error recovery easier.
- */
- while (offset) {
- offset -= PAGE_SIZE;
- if (move_one_page(mm, old_addr + offset, new_addr + offset))
- goto oops_we_failed;
- }
- flush_tlb_range(mm, old_addr, old_addr + len);
- return 0;
-
- /*
- * Ok, the move failed because we didn't have enough pages for
- * the new page table tree. This is unlikely, but we have to
- * take the possibility into account. In that case we just move
- * all the pages back (this will work, because we still have
- * the old page tables)
- */
-oops_we_failed:
- flush_cache_range(mm, new_addr, new_addr + len);
- while ((offset += PAGE_SIZE) < len)
- move_one_page(mm, new_addr + offset, old_addr + offset);
- zap_page_range(mm, new_addr, len);
- return -1;
-}
-
-static inline unsigned long move_vma(struct vm_area_struct * vma,
- unsigned long addr, unsigned long old_len, unsigned long new_len,
- unsigned long new_addr)
-{
- struct mm_struct * mm = vma->vm_mm;
- struct vm_area_struct * new_vma, * next, * prev;
- int allocated_vma;
-
- new_vma = NULL;
- next = find_vma_prev(mm, new_addr, &prev);
- if (next) {
- if (prev && prev->vm_end == new_addr &&
- can_vma_merge(prev, vma->vm_flags) && !vma->vm_file &&
!(vma->vm_flags & VM_SHARED)) {
- spin_lock(&mm->page_table_lock);
- prev->vm_end = new_addr + new_len;
- spin_unlock(&mm->page_table_lock);
- new_vma = prev;
- if (next != prev->vm_next)
- BUG();
- if (prev->vm_end == next->vm_start &&
can_vma_merge(next, prev->vm_flags)) {
- spin_lock(&mm->page_table_lock);
- prev->vm_end = next->vm_end;
- __vma_unlink(mm, next, prev);
- spin_unlock(&mm->page_table_lock);
-
- mm->map_count--;
- kmem_cache_free(vm_area_cachep, next);
- }
- } else if (next->vm_start == new_addr + new_len &&
- can_vma_merge(next, vma->vm_flags) && !vma->vm_file
&& !(vma->vm_flags & VM_SHARED)) {
- spin_lock(&mm->page_table_lock);
- next->vm_start = new_addr;
- spin_unlock(&mm->page_table_lock);
- new_vma = next;
- }
- } else {
- prev = find_vma(mm, new_addr-1);
- if (prev && prev->vm_end == new_addr &&
- can_vma_merge(prev, vma->vm_flags) && !vma->vm_file &&
!(vma->vm_flags & VM_SHARED)) {
- spin_lock(&mm->page_table_lock);
- prev->vm_end = new_addr + new_len;
- spin_unlock(&mm->page_table_lock);
- new_vma = prev;
- }
- }
-
- allocated_vma = 0;
- if (!new_vma) {
- new_vma = kmem_cache_alloc(vm_area_cachep, SLAB_KERNEL);
- if (!new_vma)
- goto out;
- allocated_vma = 1;
- }
-
- if (!move_page_tables(current->mm, new_addr, addr, old_len)) {
- unsigned long vm_locked = vma->vm_flags & VM_LOCKED;
-
- if (allocated_vma) {
- *new_vma = *vma;
- new_vma->vm_start = new_addr;
- new_vma->vm_end = new_addr+new_len;
- new_vma->vm_pgoff += (addr-vma->vm_start) >> PAGE_SHIFT;
- new_vma->vm_raend = 0;
- if (new_vma->vm_file)
- get_file(new_vma->vm_file);
- if (new_vma->vm_ops && new_vma->vm_ops->open)
- new_vma->vm_ops->open(new_vma);
- insert_vm_struct(current->mm, new_vma);
- }
-
- /* XXX: possible errors masked, mapping might remain */
- do_munmap(current->mm, addr, old_len);
-
- current->mm->total_vm += new_len >> PAGE_SHIFT;
- if (vm_locked) {
- current->mm->locked_vm += new_len >> PAGE_SHIFT;
- if (new_len > old_len)
- make_pages_present(new_addr + old_len,
- new_addr + new_len);
- }
- return new_addr;
- }
- if (allocated_vma)
- kmem_cache_free(vm_area_cachep, new_vma);
- out:
- return -ENOMEM;
-}
-
-/*
- * Expand (or shrink) an existing mapping, potentially moving it at the
- * same time (controlled by the MREMAP_MAYMOVE flag and available VM space)
- *
- * MREMAP_FIXED option added 5-Dec-1999 by Benjamin LaHaise
- * This option implies MREMAP_MAYMOVE.
- */
-unsigned long do_mremap(unsigned long addr,
- unsigned long old_len, unsigned long new_len,
- unsigned long flags, unsigned long new_addr)
-{
- struct vm_area_struct *vma;
- unsigned long ret = -EINVAL;
-
- if (flags & ~(MREMAP_FIXED | MREMAP_MAYMOVE))
- goto out;
-
- if (addr & ~PAGE_MASK)
- goto out;
-
- old_len = PAGE_ALIGN(old_len);
- new_len = PAGE_ALIGN(new_len);
-
- if (old_len > TASK_SIZE || addr > TASK_SIZE - old_len)
- goto out;
-
- if (addr >= TASK_SIZE)
- goto out;
-
- /* new_addr is only valid if MREMAP_FIXED is specified */
- if (flags & MREMAP_FIXED) {
- if (new_addr & ~PAGE_MASK)
- goto out;
- if (!(flags & MREMAP_MAYMOVE))
- goto out;
-
- if (new_len > TASK_SIZE || new_addr > TASK_SIZE - new_len)
- goto out;
-
- if (new_addr >= TASK_SIZE)
- goto out;
-
- /*
- * Allow new_len == 0 only if new_addr == addr
- * to preserve truncation in place (that was working
- * safe and some app may depend on it).
- */
- if (unlikely(!new_len && new_addr != addr))
- goto out;
-
- /* Check if the location we're moving into overlaps the
- * old location at all, and fail if it does.
- */
- if ((new_addr <= addr) && (new_addr+new_len) > addr)
- goto out;
-
- if ((addr <= new_addr) && (addr+old_len) > new_addr)
- goto out;
-
- ret = do_munmap(current->mm, new_addr, new_len);
- if (ret && new_len)
- goto out;
- }
-
- /*
- * Always allow a shrinking remap: that just unmaps
- * the unnecessary pages..
- */
- if (old_len >= new_len) {
- ret = do_munmap(current->mm, addr+new_len, old_len - new_len);
- if (ret && old_len != new_len)
- goto out;
- ret = addr;
- if (!(flags & MREMAP_FIXED) || (new_addr == addr))
- goto out;
- }
-
- /*
- * Ok, we need to grow.. or relocate.
- */
- ret = -EFAULT;
- vma = find_vma(current->mm, addr);
- if (!vma || vma->vm_start > addr)
- goto out;
- /* We can't remap across vm area boundaries */
- if (old_len > vma->vm_end - addr)
- goto out;
- if (vma->vm_flags & VM_DONTEXPAND) {
- if (new_len > old_len)
- goto out;
- }
- if (vma->vm_flags & VM_LOCKED) {
- unsigned long locked = current->mm->locked_vm << PAGE_SHIFT;
- locked += new_len - old_len;
- ret = -EAGAIN;
- if (locked > current->rlim[RLIMIT_MEMLOCK].rlim_cur)
- goto out;
- }
- ret = -ENOMEM;
- if ((current->mm->total_vm << PAGE_SHIFT) + (new_len - old_len)
- > current->rlim[RLIMIT_AS].rlim_cur)
- goto out;
- /* Private writable mapping? Check memory availability.. */
- if ((vma->vm_flags & (VM_SHARED | VM_WRITE)) == VM_WRITE &&
- !(flags & MAP_NORESERVE) &&
- !vm_enough_memory((new_len - old_len) >> PAGE_SHIFT))
- goto out;
-
-#if defined(CONFIG_XEN_PRIVILEGED_GUEST)
- /* mremap() unsupported for I/O mappings in Xenolinux. */
- ret = -EINVAL;
- if (vma->vm_flags & VM_IO)
- goto out;
-#endif
-
- /* old_len exactly to the end of the area..
- * And we're not relocating the area.
- */
- if (old_len == vma->vm_end - addr &&
- !((flags & MREMAP_FIXED) && (addr != new_addr)) &&
- (old_len != new_len || !(flags & MREMAP_MAYMOVE))) {
- unsigned long max_addr = TASK_SIZE;
- if (vma->vm_next)
- max_addr = vma->vm_next->vm_start;
- /* can we just expand the current mapping? */
- if (max_addr - addr >= new_len) {
- int pages = (new_len - old_len) >> PAGE_SHIFT;
- spin_lock(&vma->vm_mm->page_table_lock);
- vma->vm_end = addr + new_len;
- spin_unlock(&vma->vm_mm->page_table_lock);
- current->mm->total_vm += pages;
- if (vma->vm_flags & VM_LOCKED) {
- current->mm->locked_vm += pages;
- make_pages_present(addr + old_len,
- addr + new_len);
- }
- ret = addr;
- goto out;
- }
- }
-
- /*
- * We weren't able to just expand or shrink the area,
- * we need to create a new one and move it..
- */
- ret = -ENOMEM;
- if (flags & MREMAP_MAYMOVE) {
- if (!(flags & MREMAP_FIXED)) {
- unsigned long map_flags = 0;
- if (vma->vm_flags & VM_SHARED)
- map_flags |= MAP_SHARED;
-
- new_addr = get_unmapped_area(vma->vm_file, 0, new_len,
vma->vm_pgoff, map_flags);
- ret = new_addr;
- if (new_addr & ~PAGE_MASK)
- goto out;
- }
- ret = move_vma(vma, addr, old_len, new_len, new_addr);
- }
-out:
- return ret;
-}
-
-asmlinkage unsigned long sys_mremap(unsigned long addr,
- unsigned long old_len, unsigned long new_len,
- unsigned long flags, unsigned long new_addr)
-{
- unsigned long ret;
-
- down_write(¤t->mm->mmap_sem);
- ret = do_mremap(addr, old_len, new_len, flags, new_addr);
- up_write(¤t->mm->mmap_sem);
- return ret;
-}
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.4.30-xen-sparse/mm/page_alloc.c
--- a/linux-2.4.30-xen-sparse/mm/page_alloc.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,972 +0,0 @@
-/*
- * linux/mm/page_alloc.c
- *
- * Manages the free list, the system allocates free pages here.
- * Note that kmalloc() lives in slab.c
- *
- * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds
- * Swap reorganised 29.12.95, Stephen Tweedie
- * Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999
- * Reshaped it to be a zoned allocator, Ingo Molnar, Red Hat, 1999
- * Discontiguous memory support, Kanoj Sarcar, SGI, Nov 1999
- * Zone balancing, Kanoj Sarcar, SGI, Jan 2000
- */
-
-#include <linux/config.h>
-#include <linux/mm.h>
-#include <linux/swap.h>
-#include <linux/swapctl.h>
-#include <linux/interrupt.h>
-#include <linux/pagemap.h>
-#include <linux/bootmem.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-
-int nr_swap_pages;
-int nr_active_pages;
-int nr_inactive_pages;
-LIST_HEAD(inactive_list);
-LIST_HEAD(active_list);
-pg_data_t *pgdat_list;
-
-/*
- *
- * The zone_table array is used to look up the address of the
- * struct zone corresponding to a given zone number (ZONE_DMA,
- * ZONE_NORMAL, or ZONE_HIGHMEM).
- */
-zone_t *zone_table[MAX_NR_ZONES*MAX_NR_NODES];
-EXPORT_SYMBOL(zone_table);
-
-static char *zone_names[MAX_NR_ZONES] = { "DMA", "Normal", "HighMem" };
-static int zone_balance_ratio[MAX_NR_ZONES] __initdata = { 128, 128, 128, };
-static int zone_balance_min[MAX_NR_ZONES] __initdata = { 20 , 20, 20, };
-static int zone_balance_max[MAX_NR_ZONES] __initdata = { 255 , 255, 255, };
-static int lower_zone_reserve_ratio[MAX_NR_ZONES-1] = { 256, 32 };
-
-int vm_gfp_debug = 0;
-
-static void FASTCALL(__free_pages_ok (struct page *page, unsigned int order));
-
-static spinlock_t free_pages_ok_no_irq_lock = SPIN_LOCK_UNLOCKED;
-struct page * free_pages_ok_no_irq_head;
-
-static void do_free_pages_ok_no_irq(void * arg)
-{
- struct page * page, * __page;
-
- spin_lock_irq(&free_pages_ok_no_irq_lock);
-
- page = free_pages_ok_no_irq_head;
- free_pages_ok_no_irq_head = NULL;
-
- spin_unlock_irq(&free_pages_ok_no_irq_lock);
-
- while (page) {
- __page = page;
- page = page->next_hash;
- __free_pages_ok(__page, __page->index);
- }
-}
-
-static struct tq_struct free_pages_ok_no_irq_task = {
- .routine = do_free_pages_ok_no_irq,
-};
-
-
-/*
- * Temporary debugging check.
- */
-#define BAD_RANGE(zone, page) \
-( \
- (((page) - mem_map) >= ((zone)->zone_start_mapnr+(zone)->size)) \
- || (((page) - mem_map) < (zone)->zone_start_mapnr) \
- || ((zone) != page_zone(page)) \
-)
-
-/*
- * Freeing function for a buddy system allocator.
- * Contrary to prior comments, this is *NOT* hairy, and there
- * is no reason for anyone not to understand it.
- *
- * The concept of a buddy system is to maintain direct-mapped tables
- * (containing bit values) for memory blocks of various "orders".
- * The bottom level table contains the map for the smallest allocatable
- * units of memory (here, pages), and each level above it describes
- * pairs of units from the levels below, hence, "buddies".
- * At a high level, all that happens here is marking the table entry
- * at the bottom level available, and propagating the changes upward
- * as necessary, plus some accounting needed to play nicely with other
- * parts of the VM system.
- * At each level, we keep one bit for each pair of blocks, which
- * is set to 1 iff only one of the pair is allocated. So when we
- * are allocating or freeing one, we can derive the state of the
- * other. That is, if we allocate a small block, and both were
- * free, the remainder of the region must be split into blocks.
- * If a block is freed, and its buddy is also free, then this
- * triggers coalescing into a block of larger size.
- *
- * -- wli
- */
-
-static void fastcall __free_pages_ok (struct page *page, unsigned int order)
-{
- unsigned long index, page_idx, mask, flags;
- free_area_t *area;
- struct page *base;
- zone_t *zone;
-
- if (PageForeign(page))
- return (PageForeignDestructor(page))(page);
-
- /*
- * Yes, think what happens when other parts of the kernel take
- * a reference to a page in order to pin it for io. -ben
- */
- if (PageLRU(page)) {
- if (unlikely(in_interrupt())) {
- unsigned long flags;
-
- spin_lock_irqsave(&free_pages_ok_no_irq_lock, flags);
- page->next_hash = free_pages_ok_no_irq_head;
- free_pages_ok_no_irq_head = page;
- page->index = order;
-
- spin_unlock_irqrestore(&free_pages_ok_no_irq_lock,
flags);
-
- schedule_task(&free_pages_ok_no_irq_task);
- return;
- }
-
- lru_cache_del(page);
- }
-
- if (page->buffers)
- BUG();
- if (page->mapping)
- BUG();
- if (!VALID_PAGE(page))
- BUG();
- if (PageLocked(page))
- BUG();
- if (PageActive(page))
- BUG();
- ClearPageReferenced(page);
- ClearPageDirty(page);
-
- if (current->flags & PF_FREE_PAGES)
- goto local_freelist;
- back_local_freelist:
-
- zone = page_zone(page);
-
- mask = (~0UL) << order;
- base = zone->zone_mem_map;
- page_idx = page - base;
- if (page_idx & ~mask)
- BUG();
- index = page_idx >> (1 + order);
-
- area = zone->free_area + order;
-
- spin_lock_irqsave(&zone->lock, flags);
-
- zone->free_pages -= mask;
-
- while (mask + (1 << (MAX_ORDER-1))) {
- struct page *buddy1, *buddy2;
-
- if (area >= zone->free_area + MAX_ORDER)
- BUG();
- if (!__test_and_change_bit(index, area->map))
- /*
- * the buddy page is still allocated.
- */
- break;
- /*
- * Move the buddy up one level.
- * This code is taking advantage of the identity:
- * -mask = 1+~mask
- */
- buddy1 = base + (page_idx ^ -mask);
- buddy2 = base + page_idx;
- if (BAD_RANGE(zone,buddy1))
- BUG();
- if (BAD_RANGE(zone,buddy2))
- BUG();
-
- list_del(&buddy1->list);
- mask <<= 1;
- area++;
- index >>= 1;
- page_idx &= mask;
- }
- list_add(&(base + page_idx)->list, &area->free_list);
-
- spin_unlock_irqrestore(&zone->lock, flags);
- return;
-
- local_freelist:
- if (current->nr_local_pages)
- goto back_local_freelist;
- if (in_interrupt())
- goto back_local_freelist;
-
- list_add(&page->list, ¤t->local_pages);
- page->index = order;
- current->nr_local_pages++;
-}
-
-#define MARK_USED(index, order, area) \
- __change_bit((index) >> (1+(order)), (area)->map)
-
-static inline struct page * expand (zone_t *zone, struct page *page,
- unsigned long index, int low, int high, free_area_t * area)
-{
- unsigned long size = 1 << high;
-
- while (high > low) {
- if (BAD_RANGE(zone,page))
- BUG();
- area--;
- high--;
- size >>= 1;
- list_add(&(page)->list, &(area)->free_list);
- MARK_USED(index, high, area);
- index += size;
- page += size;
- }
- if (BAD_RANGE(zone,page))
- BUG();
- return page;
-}
-
-static FASTCALL(struct page * rmqueue(zone_t *zone, unsigned int order));
-static struct page * fastcall rmqueue(zone_t *zone, unsigned int order)
-{
- free_area_t * area = zone->free_area + order;
- unsigned int curr_order = order;
- struct list_head *head, *curr;
- unsigned long flags;
- struct page *page;
-
- spin_lock_irqsave(&zone->lock, flags);
- do {
- head = &area->free_list;
- curr = head->next;
-
- if (curr != head) {
- unsigned int index;
-
- page = list_entry(curr, struct page, list);
- if (BAD_RANGE(zone,page))
- BUG();
- list_del(curr);
- index = page - zone->zone_mem_map;
- if (curr_order != MAX_ORDER-1)
- MARK_USED(index, curr_order, area);
- zone->free_pages -= 1UL << order;
-
- page = expand(zone, page, index, order, curr_order,
area);
- spin_unlock_irqrestore(&zone->lock, flags);
-
- set_page_count(page, 1);
- if (BAD_RANGE(zone,page))
- BUG();
- if (PageLRU(page))
- BUG();
- if (PageActive(page))
- BUG();
- return page;
- }
- curr_order++;
- area++;
- } while (curr_order < MAX_ORDER);
- spin_unlock_irqrestore(&zone->lock, flags);
-
- return NULL;
-}
-
-#ifndef CONFIG_DISCONTIGMEM
-struct page * fastcall _alloc_pages(unsigned int gfp_mask, unsigned int order)
-{
- return __alloc_pages(gfp_mask, order,
- contig_page_data.node_zonelists+(gfp_mask & GFP_ZONEMASK));
-}
-#endif
-
-static struct page * FASTCALL(balance_classzone(zone_t *, unsigned int,
unsigned int, int *));
-static struct page * fastcall balance_classzone(zone_t * classzone, unsigned
int gfp_mask, unsigned int order, int * freed)
-{
- struct page * page = NULL;
- int __freed;
-
- if (in_interrupt())
- BUG();
-
- current->allocation_order = order;
- current->flags |= PF_MEMALLOC | PF_FREE_PAGES;
-
- __freed = try_to_free_pages_zone(classzone, gfp_mask);
-
- current->flags &= ~(PF_MEMALLOC | PF_FREE_PAGES);
-
- if (current->nr_local_pages) {
- struct list_head * entry, * local_pages;
- struct page * tmp;
- int nr_pages;
-
- local_pages = ¤t->local_pages;
-
- if (likely(__freed)) {
- /* pick from the last inserted so we're lifo */
- entry = local_pages->next;
- do {
- tmp = list_entry(entry, struct page, list);
- if (tmp->index == order &&
memclass(page_zone(tmp), classzone)) {
- list_del(entry);
- current->nr_local_pages--;
- set_page_count(tmp, 1);
- page = tmp;
-
- if (page->buffers)
- BUG();
- if (page->mapping)
- BUG();
- if (!VALID_PAGE(page))
- BUG();
- if (PageLocked(page))
- BUG();
- if (PageLRU(page))
- BUG();
- if (PageActive(page))
- BUG();
- if (PageDirty(page))
- BUG();
-
- break;
- }
- } while ((entry = entry->next) != local_pages);
- }
-
- nr_pages = current->nr_local_pages;
- /* free in reverse order so that the global order will be lifo
*/
- while ((entry = local_pages->prev) != local_pages) {
- list_del(entry);
- tmp = list_entry(entry, struct page, list);
- __free_pages_ok(tmp, tmp->index);
- if (!nr_pages--)
- BUG();
- }
- current->nr_local_pages = 0;
- }
-
- *freed = __freed;
- return page;
-}
-
-static inline unsigned long zone_free_pages(zone_t * zone, unsigned int order)
-{
- long free = zone->free_pages - (1UL << order);
- return free >= 0 ? free : 0;
-}
-
-/*
- * This is the 'heart' of the zoned buddy allocator:
- */
-struct page * fastcall __alloc_pages(unsigned int gfp_mask, unsigned int
order, zonelist_t *zonelist)
-{
- zone_t **zone, * classzone;
- struct page * page;
- int freed, class_idx;
-
- zone = zonelist->zones;
- classzone = *zone;
- class_idx = zone_idx(classzone);
-
- for (;;) {
- zone_t *z = *(zone++);
- if (!z)
- break;
-
- if (zone_free_pages(z, order) > z->watermarks[class_idx].low) {
- page = rmqueue(z, order);
- if (page)
- return page;
- }
- }
-
- classzone->need_balance = 1;
- mb();
- if (waitqueue_active(&kswapd_wait))
- wake_up_interruptible(&kswapd_wait);
-
- zone = zonelist->zones;
- for (;;) {
- unsigned long min;
- zone_t *z = *(zone++);
- if (!z)
- break;
-
- min = z->watermarks[class_idx].min;
- if (!(gfp_mask & __GFP_WAIT))
- min >>= 2;
- if (zone_free_pages(z, order) > min) {
- page = rmqueue(z, order);
- if (page)
- return page;
- }
- }
-
- /* here we're in the low on memory slow path */
-
- if ((current->flags & PF_MEMALLOC) &&
- (!in_interrupt() || (current->flags & PF_MEMDIE))) {
- zone = zonelist->zones;
- for (;;) {
- zone_t *z = *(zone++);
- if (!z)
- break;
-
- page = rmqueue(z, order);
- if (page)
- return page;
- }
- return NULL;
- }
-
- /* Atomic allocations - we can't balance anything */
- if (!(gfp_mask & __GFP_WAIT))
- goto out;
-
- rebalance:
- page = balance_classzone(classzone, gfp_mask, order, &freed);
- if (page)
- return page;
-
- zone = zonelist->zones;
- if (likely(freed)) {
- for (;;) {
- zone_t *z = *(zone++);
- if (!z)
- break;
-
- if (zone_free_pages(z, order) >
z->watermarks[class_idx].min) {
- page = rmqueue(z, order);
- if (page)
- return page;
- }
- }
- goto rebalance;
- } else {
- /*
- * Check that no other task is been killed meanwhile,
- * in such a case we can succeed the allocation.
- */
- for (;;) {
- zone_t *z = *(zone++);
- if (!z)
- break;
-
- if (zone_free_pages(z, order) >
z->watermarks[class_idx].high) {
- page = rmqueue(z, order);
- if (page)
- return page;
- }
- }
- }
-
- out:
- printk(KERN_NOTICE "__alloc_pages: %u-order allocation failed
(gfp=0x%x/%i)\n",
- order, gfp_mask, !!(current->flags & PF_MEMALLOC));
- if (unlikely(vm_gfp_debug))
- dump_stack();
- return NULL;
-}
-
-/*
- * Common helper functions.
- */
-fastcall unsigned long __get_free_pages(unsigned int gfp_mask, unsigned int
order)
-{
- struct page * page;
-
- page = alloc_pages(gfp_mask, order);
- if (!page)
- return 0;
- return (unsigned long) page_address(page);
-}
-
-fastcall unsigned long get_zeroed_page(unsigned int gfp_mask)
-{
- struct page * page;
-
- page = alloc_pages(gfp_mask, 0);
- if (page) {
- void *address = page_address(page);
- clear_page(address);
- return (unsigned long) address;
- }
- return 0;
-}
-
-fastcall void __free_pages(struct page *page, unsigned int order)
-{
- if (!PageReserved(page) && put_page_testzero(page))
- __free_pages_ok(page, order);
-}
-
-fastcall void free_pages(unsigned long addr, unsigned int order)
-{
- if (addr != 0)
- __free_pages(virt_to_page(addr), order);
-}
-
-/*
- * Total amount of free (allocatable) RAM:
- */
-unsigned int nr_free_pages (void)
-{
- unsigned int sum = 0;
- zone_t *zone;
-
- for_each_zone(zone)
- sum += zone->free_pages;
-
- return sum;
-}
-
-/*
- * Amount of free RAM allocatable as buffer memory:
- */
-unsigned int nr_free_buffer_pages (void)
-{
- pg_data_t *pgdat;
- unsigned int sum = 0;
- zonelist_t *zonelist;
- zone_t **zonep, *zone;
-
- for_each_pgdat(pgdat) {
- int class_idx;
- zonelist = pgdat->node_zonelists + (GFP_USER & GFP_ZONEMASK);
- zonep = zonelist->zones;
- zone = *zonep;
- class_idx = zone_idx(zone);
-
- sum += zone->nr_cache_pages;
- for (; zone; zone = *zonep++) {
- int free = zone->free_pages -
zone->watermarks[class_idx].high;
- if (free <= 0)
- continue;
- sum += free;
- }
- }
-
- return sum;
-}
-
-#if CONFIG_HIGHMEM
-unsigned int nr_free_highpages (void)
-{
- pg_data_t *pgdat;
- unsigned int pages = 0;
-
- for_each_pgdat(pgdat)
- pages += pgdat->node_zones[ZONE_HIGHMEM].free_pages;
-
- return pages;
-}
-
-unsigned int freeable_lowmem(void)
-{
- unsigned int pages = 0;
- pg_data_t *pgdat;
-
- for_each_pgdat(pgdat) {
- pages += pgdat->node_zones[ZONE_DMA].free_pages;
- pages += pgdat->node_zones[ZONE_DMA].nr_active_pages;
- pages += pgdat->node_zones[ZONE_DMA].nr_inactive_pages;
- pages += pgdat->node_zones[ZONE_NORMAL].free_pages;
- pages += pgdat->node_zones[ZONE_NORMAL].nr_active_pages;
- pages += pgdat->node_zones[ZONE_NORMAL].nr_inactive_pages;
- }
-
- return pages;
-}
-#endif
-
-#define K(x) ((x) << (PAGE_SHIFT-10))
-
-/*
- * Show free area list (used inside shift_scroll-lock stuff)
- * We also calculate the percentage fragmentation. We do this by counting the
- * memory on each free list with the exception of the first item on the list.
- */
-void show_free_areas_core(pg_data_t *pgdat)
-{
- unsigned int order;
- unsigned type;
- pg_data_t *tmpdat = pgdat;
-
- printk("Free pages: %6dkB (%6dkB HighMem)\n",
- K(nr_free_pages()),
- K(nr_free_highpages()));
-
- while (tmpdat) {
- zone_t *zone;
- for (zone = tmpdat->node_zones;
- zone < tmpdat->node_zones + MAX_NR_ZONES;
zone++)
- printk("Zone:%s freepages:%6lukB\n",
- zone->name,
- K(zone->free_pages));
-
- tmpdat = tmpdat->node_next;
- }
-
- printk("( Active: %d, inactive: %d, free: %d )\n",
- nr_active_pages,
- nr_inactive_pages,
- nr_free_pages());
-
- for (type = 0; type < MAX_NR_ZONES; type++) {
- struct list_head *head, *curr;
- zone_t *zone = pgdat->node_zones + type;
- unsigned long nr, total, flags;
-
- total = 0;
- if (zone->size) {
- spin_lock_irqsave(&zone->lock, flags);
- for (order = 0; order < MAX_ORDER; order++) {
- head = &(zone->free_area + order)->free_list;
- curr = head;
- nr = 0;
- for (;;) {
- if ((curr = curr->next) == head)
- break;
- nr++;
- }
- total += nr * (1 << order);
- printk("%lu*%lukB ", nr, K(1UL) << order);
- }
- spin_unlock_irqrestore(&zone->lock, flags);
- }
- printk("= %lukB)\n", K(total));
- }
-
-#ifdef SWAP_CACHE_INFO
- show_swap_cache_info();
-#endif
-}
-
-void show_free_areas(void)
-{
- show_free_areas_core(pgdat_list);
-}
-
-/*
- * Builds allocation fallback zone lists.
- */
-static inline void build_zonelists(pg_data_t *pgdat)
-{
- int i, j, k;
-
- for (i = 0; i <= GFP_ZONEMASK; i++) {
- zonelist_t *zonelist;
- zone_t *zone;
-
- zonelist = pgdat->node_zonelists + i;
- memset(zonelist, 0, sizeof(*zonelist));
-
- j = 0;
- k = ZONE_NORMAL;
- if (i & __GFP_HIGHMEM)
- k = ZONE_HIGHMEM;
- if (i & __GFP_DMA)
- k = ZONE_DMA;
-
- switch (k) {
- default:
- BUG();
- /*
- * fallthrough:
- */
- case ZONE_HIGHMEM:
- zone = pgdat->node_zones + ZONE_HIGHMEM;
- if (zone->size) {
-#ifndef CONFIG_HIGHMEM
- BUG();
-#endif
- zonelist->zones[j++] = zone;
- }
- case ZONE_NORMAL:
- zone = pgdat->node_zones + ZONE_NORMAL;
- if (zone->size)
- zonelist->zones[j++] = zone;
- case ZONE_DMA:
- zone = pgdat->node_zones + ZONE_DMA;
- if (zone->size)
- zonelist->zones[j++] = zone;
- }
- zonelist->zones[j++] = NULL;
- }
-}
-
-/*
- * Helper functions to size the waitqueue hash table.
- * Essentially these want to choose hash table sizes sufficiently
- * large so that collisions trying to wait on pages are rare.
- * But in fact, the number of active page waitqueues on typical
- * systems is ridiculously low, less than 200. So this is even
- * conservative, even though it seems large.
- *
- * The constant PAGES_PER_WAITQUEUE specifies the ratio of pages to
- * waitqueues, i.e. the size of the waitq table given the number of pages.
- */
-#define PAGES_PER_WAITQUEUE 256
-
-static inline unsigned long wait_table_size(unsigned long pages)
-{
- unsigned long size = 1;
-
- pages /= PAGES_PER_WAITQUEUE;
-
- while (size < pages)
- size <<= 1;
-
- /*
- * Once we have dozens or even hundreds of threads sleeping
- * on IO we've got bigger problems than wait queue collision.
- * Limit the size of the wait table to a reasonable size.
- */
- size = min(size, 4096UL);
-
- return size;
-}
-
-/*
- * This is an integer logarithm so that shifts can be used later
- * to extract the more random high bits from the multiplicative
- * hash function before the remainder is taken.
- */
-static inline unsigned long wait_table_bits(unsigned long size)
-{
- return ffz(~size);
-}
-
-#define LONG_ALIGN(x) (((x)+(sizeof(long))-1)&~((sizeof(long))-1))
-
-/*
- * Set up the zone data structures:
- * - mark all pages reserved
- * - mark all memory queues empty
- * - clear the memory bitmaps
- */
-void __init free_area_init_core(int nid, pg_data_t *pgdat, struct page **gmap,
- unsigned long *zones_size, unsigned long zone_start_paddr,
- unsigned long *zholes_size, struct page *lmem_map)
-{
- unsigned long i, j;
- unsigned long map_size;
- unsigned long totalpages, offset, realtotalpages;
- const unsigned long zone_required_alignment = 1UL << (MAX_ORDER-1);
-
- if (zone_start_paddr & ~PAGE_MASK)
- BUG();
-
- totalpages = 0;
- for (i = 0; i < MAX_NR_ZONES; i++) {
- unsigned long size = zones_size[i];
- totalpages += size;
- }
- realtotalpages = totalpages;
- if (zholes_size)
- for (i = 0; i < MAX_NR_ZONES; i++)
- realtotalpages -= zholes_size[i];
-
- printk("On node %d totalpages: %lu\n", nid, realtotalpages);
-
- /*
- * Some architectures (with lots of mem and discontinous memory
- * maps) have to search for a good mem_map area:
- * For discontigmem, the conceptual mem map array starts from
- * PAGE_OFFSET, we need to align the actual array onto a mem map
- * boundary, so that MAP_NR works.
- */
- map_size = (totalpages + 1)*sizeof(struct page);
- if (lmem_map == (struct page *)0) {
- lmem_map = (struct page *) alloc_bootmem_node(pgdat, map_size);
- lmem_map = (struct page *)(PAGE_OFFSET +
- MAP_ALIGN((unsigned long)lmem_map - PAGE_OFFSET));
- }
- *gmap = pgdat->node_mem_map = lmem_map;
- pgdat->node_size = totalpages;
- pgdat->node_start_paddr = zone_start_paddr;
- pgdat->node_start_mapnr = (lmem_map - mem_map);
- pgdat->nr_zones = 0;
-
- offset = lmem_map - mem_map;
- for (j = 0; j < MAX_NR_ZONES; j++) {
- zone_t *zone = pgdat->node_zones + j;
- unsigned long mask;
- unsigned long size, realsize;
- int idx;
-
- zone_table[nid * MAX_NR_ZONES + j] = zone;
- realsize = size = zones_size[j];
- if (zholes_size)
- realsize -= zholes_size[j];
-
- printk("zone(%lu): %lu pages.\n", j, size);
- zone->size = size;
- zone->realsize = realsize;
- zone->name = zone_names[j];
- zone->lock = SPIN_LOCK_UNLOCKED;
- zone->zone_pgdat = pgdat;
- zone->free_pages = 0;
- zone->need_balance = 0;
- zone->nr_active_pages = zone->nr_inactive_pages = 0;
-
-
- if (!size)
- continue;
-
- /*
- * The per-page waitqueue mechanism uses hashed waitqueues
- * per zone.
- */
- zone->wait_table_size = wait_table_size(size);
- zone->wait_table_shift =
- BITS_PER_LONG - wait_table_bits(zone->wait_table_size);
- zone->wait_table = (wait_queue_head_t *)
- alloc_bootmem_node(pgdat, zone->wait_table_size
- * sizeof(wait_queue_head_t));
-
- for(i = 0; i < zone->wait_table_size; ++i)
- init_waitqueue_head(zone->wait_table + i);
-
- pgdat->nr_zones = j+1;
-
- mask = (realsize / zone_balance_ratio[j]);
- if (mask < zone_balance_min[j])
- mask = zone_balance_min[j];
- else if (mask > zone_balance_max[j])
- mask = zone_balance_max[j];
- zone->watermarks[j].min = mask;
- zone->watermarks[j].low = mask*2;
- zone->watermarks[j].high = mask*3;
- /* now set the watermarks of the lower zones in the "j"
classzone */
- for (idx = j-1; idx >= 0; idx--) {
- zone_t * lower_zone = pgdat->node_zones + idx;
- unsigned long lower_zone_reserve;
- if (!lower_zone->size)
- continue;
-
- mask = lower_zone->watermarks[idx].min;
- lower_zone->watermarks[j].min = mask;
- lower_zone->watermarks[j].low = mask*2;
- lower_zone->watermarks[j].high = mask*3;
-
- /* now the brainer part */
- lower_zone_reserve = realsize /
lower_zone_reserve_ratio[idx];
- lower_zone->watermarks[j].min += lower_zone_reserve;
- lower_zone->watermarks[j].low += lower_zone_reserve;
- lower_zone->watermarks[j].high += lower_zone_reserve;
-
- realsize += lower_zone->realsize;
- }
-
- zone->zone_mem_map = mem_map + offset;
- zone->zone_start_mapnr = offset;
- zone->zone_start_paddr = zone_start_paddr;
-
- if ((zone_start_paddr >> PAGE_SHIFT) &
(zone_required_alignment-1))
- printk("BUG: wrong zone alignment, it will crash\n");
-
- /*
- * Initially all pages are reserved - free ones are freed
- * up by free_all_bootmem() once the early boot process is
- * done. Non-atomic initialization, single-pass.
- */
- for (i = 0; i < size; i++) {
- struct page *page = mem_map + offset + i;
- set_page_zone(page, nid * MAX_NR_ZONES + j);
- set_page_count(page, 0);
- SetPageReserved(page);
- INIT_LIST_HEAD(&page->list);
- if (j != ZONE_HIGHMEM)
- set_page_address(page, __va(zone_start_paddr));
- zone_start_paddr += PAGE_SIZE;
- }
-
- offset += size;
- for (i = 0; ; i++) {
- unsigned long bitmap_size;
-
- INIT_LIST_HEAD(&zone->free_area[i].free_list);
- if (i == MAX_ORDER-1) {
- zone->free_area[i].map = NULL;
- break;
- }
-
- /*
- * Page buddy system uses "index >> (i+1)",
- * where "index" is at most "size-1".
- *
- * The extra "+3" is to round down to byte
- * size (8 bits per byte assumption). Thus
- * we get "(size-1) >> (i+4)" as the last byte
- * we can access.
- *
- * The "+1" is because we want to round the
- * byte allocation up rather than down. So
- * we should have had a "+7" before we shifted
- * down by three. Also, we have to add one as
- * we actually _use_ the last bit (it's [0,n]
- * inclusive, not [0,n[).
- *
- * So we actually had +7+1 before we shift
- * down by 3. But (n+8) >> 3 == (n >> 3) + 1
- * (modulo overflows, which we do not have).
- *
- * Finally, we LONG_ALIGN because all bitmap
- * operations are on longs.
- */
- bitmap_size = (size-1) >> (i+4);
- bitmap_size = LONG_ALIGN(bitmap_size+1);
- zone->free_area[i].map =
- (unsigned long *) alloc_bootmem_node(pgdat,
bitmap_size);
- }
- }
- build_zonelists(pgdat);
-}
-
-void __init free_area_init(unsigned long *zones_size)
-{
- free_area_init_core(0, &contig_page_data, &mem_map, zones_size, 0, 0,
0);
-}
-
-static int __init setup_mem_frac(char *str)
-{
- int j = 0;
-
- while (get_option(&str, &zone_balance_ratio[j++]) == 2);
- printk("setup_mem_frac: ");
- for (j = 0; j < MAX_NR_ZONES; j++) printk("%d ",
zone_balance_ratio[j]);
- printk("\n");
- return 1;
-}
-
-__setup("memfrac=", setup_mem_frac);
-
-static int __init setup_lower_zone_reserve(char *str)
-{
- int j = 0;
-
- while (get_option(&str, &lower_zone_reserve_ratio[j++]) == 2);
- printk("setup_lower_zone_reserve: ");
- for (j = 0; j < MAX_NR_ZONES-1; j++) printk("%d ",
lower_zone_reserve_ratio[j]);
- printk("\n");
- return 1;
-}
-
-__setup("lower_zone_reserve=", setup_lower_zone_reserve);
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.4.30-xen-sparse/net/core/skbuff.c
--- a/linux-2.4.30-xen-sparse/net/core/skbuff.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,1309 +0,0 @@
-/*
- * Routines having to do with the 'struct sk_buff' memory handlers.
- *
- * Authors: Alan Cox <iiitac@xxxxxxxxxxxxxx>
- * Florian La Roche <rzsfl@xxxxxxxxxxxx>
- *
- * Version: $Id: skbuff.c,v 1.90 2001/11/07 05:56:19 davem Exp $
- *
- * Fixes:
- * Alan Cox : Fixed the worst of the load balancer
bugs.
- * Dave Platt : Interrupt stacking fix.
- * Richard Kooijman : Timestamp fixes.
- * Alan Cox : Changed buffer format.
- * Alan Cox : destructor hook for AF_UNIX etc.
- * Linus Torvalds : Better skb_clone.
- * Alan Cox : Added skb_copy.
- * Alan Cox : Added all the changed routines Linus
- * only put in the headers
- * Ray VanTassle : Fixed --skb->lock in free
- * Alan Cox : skb_copy copy arp field
- * Andi Kleen : slabified it.
- *
- * NOTE:
- * The __skb_ routines should be called with interrupts
- * disabled, or you better be *real* sure that the operation is atomic
- * with respect to whatever list is being frobbed (e.g. via lock_sock()
- * or via disabling bottom half handlers, etc).
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-/*
- * The functions in this file will not compile correctly with gcc 2.4.x
- */
-
-#include <linux/config.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/interrupt.h>
-#include <linux/in.h>
-#include <linux/inet.h>
-#include <linux/slab.h>
-#include <linux/netdevice.h>
-#include <linux/string.h>
-#include <linux/skbuff.h>
-#include <linux/cache.h>
-#include <linux/rtnetlink.h>
-#include <linux/init.h>
-#include <linux/highmem.h>
-
-#include <net/protocol.h>
-#include <net/dst.h>
-#include <net/sock.h>
-#include <net/checksum.h>
-
-#include <asm/uaccess.h>
-#include <asm/system.h>
-
-int sysctl_hot_list_len = 128;
-
-static kmem_cache_t *skbuff_head_cache;
-
-static union {
- struct sk_buff_head list;
- char pad[SMP_CACHE_BYTES];
-} skb_head_pool[NR_CPUS];
-
-/*
- * Keep out-of-line to prevent kernel bloat.
- * __builtin_return_address is not used because it is not always
- * reliable.
- */
-
-/**
- * skb_over_panic - private function
- * @skb: buffer
- * @sz: size
- * @here: address
- *
- * Out of line support code for skb_put(). Not user callable.
- */
-
-void skb_over_panic(struct sk_buff *skb, int sz, void *here)
-{
- printk("skput:over: %p:%d put:%d dev:%s",
- here, skb->len, sz, skb->dev ? skb->dev->name : "<NULL>");
- BUG();
-}
-
-/**
- * skb_under_panic - private function
- * @skb: buffer
- * @sz: size
- * @here: address
- *
- * Out of line support code for skb_push(). Not user callable.
- */
-
-
-void skb_under_panic(struct sk_buff *skb, int sz, void *here)
-{
- printk("skput:under: %p:%d put:%d dev:%s",
- here, skb->len, sz, skb->dev ? skb->dev->name : "<NULL>");
- BUG();
-}
-
-static __inline__ struct sk_buff *skb_head_from_pool(void)
-{
- struct sk_buff_head *list = &skb_head_pool[smp_processor_id()].list;
-
- if (skb_queue_len(list)) {
- struct sk_buff *skb;
- unsigned long flags;
-
- local_irq_save(flags);
- skb = __skb_dequeue(list);
- local_irq_restore(flags);
- return skb;
- }
- return NULL;
-}
-
-static __inline__ void skb_head_to_pool(struct sk_buff *skb)
-{
- struct sk_buff_head *list = &skb_head_pool[smp_processor_id()].list;
-
- if (skb_queue_len(list) < sysctl_hot_list_len) {
- unsigned long flags;
-
- local_irq_save(flags);
- __skb_queue_head(list, skb);
- local_irq_restore(flags);
-
- return;
- }
- kmem_cache_free(skbuff_head_cache, skb);
-}
-
-
-/* Allocate a new skbuff. We do this ourselves so we can fill in a few
- * 'private' fields and also do memory statistics to find all the
- * [BEEP] leaks.
- *
- */
-
-/**
- * alloc_skb - allocate a network buffer
- * @size: size to allocate
- * @gfp_mask: allocation mask
- *
- * Allocate a new &sk_buff. The returned buffer has no headroom and a
- * tail room of size bytes. The object has a reference count of one.
- * The return is the buffer. On a failure the return is %NULL.
- *
- * Buffers may only be allocated from interrupts using a @gfp_mask of
- * %GFP_ATOMIC.
- */
-
-struct sk_buff *alloc_skb(unsigned int size,int gfp_mask)
-{
- struct sk_buff *skb;
- u8 *data;
-
- if (in_interrupt() && (gfp_mask & __GFP_WAIT)) {
- static int count = 0;
- if (++count < 5) {
- printk(KERN_ERR "alloc_skb called nonatomically "
- "from interrupt %p\n", NET_CALLER(size));
- BUG();
- }
- gfp_mask &= ~__GFP_WAIT;
- }
-
- /* Get the HEAD */
- skb = skb_head_from_pool();
- if (skb == NULL) {
- skb = kmem_cache_alloc(skbuff_head_cache, gfp_mask &
~__GFP_DMA);
- if (skb == NULL)
- goto nohead;
- }
-
- /* Get the DATA. Size must match skb_add_mtu(). */
- size = SKB_DATA_ALIGN(size);
- data = kmalloc(size + sizeof(struct skb_shared_info), gfp_mask);
- if (data == NULL)
- goto nodata;
-
- /* XXX: does not include slab overhead */
- skb->truesize = size + sizeof(struct sk_buff);
-
- /* Load the data pointers. */
- skb->head = data;
- skb->data = data;
- skb->tail = data;
- skb->end = data + size;
-
- /* Set up other state */
- skb->len = 0;
- skb->cloned = 0;
- skb->data_len = 0;
-
- atomic_set(&skb->users, 1);
- atomic_set(&(skb_shinfo(skb)->dataref), 1);
- skb_shinfo(skb)->nr_frags = 0;
- skb_shinfo(skb)->frag_list = NULL;
- return skb;
-
-nodata:
- skb_head_to_pool(skb);
-nohead:
- return NULL;
-}
-
-/**
- * alloc_skb_from_cache - allocate a network buffer
- * @cp: kmem_cache from which to allocate the data area
- * (object size must be big enough for @size bytes + skb overheads)
- * @size: size to allocate
- * @gfp_mask: allocation mask
- *
- * Allocate a new &sk_buff. The returned buffer has no headroom and a
- * tail room of size bytes. The object has a reference count of one.
- * The return is the buffer. On a failure the return is %NULL.
- *
- * Buffers may only be allocated from interrupts using a @gfp_mask of
- * %GFP_ATOMIC.
- */
-
-struct sk_buff *alloc_skb_from_cache(kmem_cache_t *cp,
- unsigned int size, int gfp_mask)
-{
- struct sk_buff *skb;
- u8 *data;
-
- if (in_interrupt() && (gfp_mask & __GFP_WAIT)) {
- static int count = 0;
- if (++count < 5) {
- printk(KERN_ERR "alloc_skb called nonatomically "
- "from interrupt %p\n", NET_CALLER(size));
- BUG();
- }
- gfp_mask &= ~__GFP_WAIT;
- }
-
- /* Get the HEAD */
- skb = skb_head_from_pool();
- if (skb == NULL) {
- skb = kmem_cache_alloc(skbuff_head_cache, gfp_mask &
~__GFP_DMA);
- if (skb == NULL)
- goto nohead;
- }
-
- /* Get the DATA. */
- size = SKB_DATA_ALIGN(size);
- data = kmem_cache_alloc(cp, gfp_mask);
- if (data == NULL)
- goto nodata;
-
- /* XXX: does not include slab overhead */
- skb->truesize = size + sizeof(struct sk_buff);
-
- /* Load the data pointers. */
- skb->head = data;
- skb->data = data;
- skb->tail = data;
- skb->end = data + size;
-
- /* Set up other state */
- skb->len = 0;
- skb->cloned = 0;
- skb->data_len = 0;
-
- atomic_set(&skb->users, 1);
- atomic_set(&(skb_shinfo(skb)->dataref), 1);
- skb_shinfo(skb)->nr_frags = 0;
- skb_shinfo(skb)->frag_list = NULL;
- return skb;
-
-nodata:
- skb_head_to_pool(skb);
-nohead:
- return NULL;
-}
-
-
-/*
- * Slab constructor for a skb head.
- */
-static inline void skb_headerinit(void *p, kmem_cache_t *cache,
- unsigned long flags)
-{
- struct sk_buff *skb = p;
-
- skb->next = NULL;
- skb->prev = NULL;
- skb->list = NULL;
- skb->sk = NULL;
- skb->stamp.tv_sec=0; /* No idea about time */
- skb->dev = NULL;
- skb->real_dev = NULL;
- skb->dst = NULL;
- memset(skb->cb, 0, sizeof(skb->cb));
- skb->pkt_type = PACKET_HOST; /* Default type */
- skb->ip_summed = 0;
- skb->priority = 0;
- skb->security = 0; /* By default packets are insecure */
- skb->destructor = NULL;
-
-#ifdef CONFIG_NETFILTER
- skb->nfmark = skb->nfcache = 0;
- skb->nfct = NULL;
-#ifdef CONFIG_NETFILTER_DEBUG
- skb->nf_debug = 0;
-#endif
-#endif
-#ifdef CONFIG_NET_SCHED
- skb->tc_index = 0;
-#endif
-}
-
-static void skb_drop_fraglist(struct sk_buff *skb)
-{
- struct sk_buff *list = skb_shinfo(skb)->frag_list;
-
- skb_shinfo(skb)->frag_list = NULL;
-
- do {
- struct sk_buff *this = list;
- list = list->next;
- kfree_skb(this);
- } while (list);
-}
-
-static void skb_clone_fraglist(struct sk_buff *skb)
-{
- struct sk_buff *list;
-
- for (list = skb_shinfo(skb)->frag_list; list; list=list->next)
- skb_get(list);
-}
-
-static void skb_release_data(struct sk_buff *skb)
-{
- if (!skb->cloned ||
- atomic_dec_and_test(&(skb_shinfo(skb)->dataref))) {
- if (skb_shinfo(skb)->nr_frags) {
- int i;
- for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
- put_page(skb_shinfo(skb)->frags[i].page);
- }
-
- if (skb_shinfo(skb)->frag_list)
- skb_drop_fraglist(skb);
-
- kfree(skb->head);
- }
-}
-
-/*
- * Free an skbuff by memory without cleaning the state.
- */
-void kfree_skbmem(struct sk_buff *skb)
-{
- skb_release_data(skb);
- skb_head_to_pool(skb);
-}
-
-/**
- * __kfree_skb - private function
- * @skb: buffer
- *
- * Free an sk_buff. Release anything attached to the buffer.
- * Clean the state. This is an internal helper function. Users should
- * always call kfree_skb
- */
-
-void __kfree_skb(struct sk_buff *skb)
-{
- if (skb->list) {
- printk(KERN_WARNING "Warning: kfree_skb passed an skb still "
- "on a list (from %p).\n", NET_CALLER(skb));
- BUG();
- }
-
- dst_release(skb->dst);
- if(skb->destructor) {
- if (in_irq()) {
- printk(KERN_WARNING "Warning: kfree_skb on hard IRQ
%p\n",
- NET_CALLER(skb));
- }
- skb->destructor(skb);
- }
-#ifdef CONFIG_NETFILTER
- nf_conntrack_put(skb->nfct);
-#endif
- skb_headerinit(skb, NULL, 0); /* clean state */
- kfree_skbmem(skb);
-}
-
-/**
- * skb_clone - duplicate an sk_buff
- * @skb: buffer to clone
- * @gfp_mask: allocation priority
- *
- * Duplicate an &sk_buff. The new one is not owned by a socket. Both
- * copies share the same packet data but not structure. The new
- * buffer has a reference count of 1. If the allocation fails the
- * function returns %NULL otherwise the new buffer is returned.
- *
- * If this function is called from an interrupt gfp_mask() must be
- * %GFP_ATOMIC.
- */
-
-struct sk_buff *skb_clone(struct sk_buff *skb, int gfp_mask)
-{
- struct sk_buff *n;
-
- n = skb_head_from_pool();
- if (!n) {
- n = kmem_cache_alloc(skbuff_head_cache, gfp_mask);
- if (!n)
- return NULL;
- }
-
-#define C(x) n->x = skb->x
-
- n->next = n->prev = NULL;
- n->list = NULL;
- n->sk = NULL;
- C(stamp);
- C(dev);
- C(real_dev);
- C(h);
- C(nh);
- C(mac);
- C(dst);
- dst_clone(n->dst);
- memcpy(n->cb, skb->cb, sizeof(skb->cb));
- C(len);
- C(data_len);
- C(csum);
- n->cloned = 1;
- C(pkt_type);
- C(ip_summed);
- C(priority);
- atomic_set(&n->users, 1);
- C(protocol);
- C(security);
- C(truesize);
- C(head);
- C(data);
- C(tail);
- C(end);
- n->destructor = NULL;
-#ifdef CONFIG_NETFILTER
- C(nfmark);
- C(nfcache);
- C(nfct);
-#ifdef CONFIG_NETFILTER_DEBUG
- C(nf_debug);
-#endif
-#endif /*CONFIG_NETFILTER*/
-#if defined(CONFIG_HIPPI)
- C(private);
-#endif
-#ifdef CONFIG_NET_SCHED
- C(tc_index);
-#endif
-
- atomic_inc(&(skb_shinfo(skb)->dataref));
- skb->cloned = 1;
-#ifdef CONFIG_NETFILTER
- nf_conntrack_get(skb->nfct);
-#endif
- return n;
-}
-
-static void copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
-{
- /*
- * Shift between the two data areas in bytes
- */
- unsigned long offset = new->data - old->data;
-
- new->list=NULL;
- new->sk=NULL;
- new->dev=old->dev;
- new->real_dev=old->real_dev;
- new->priority=old->priority;
- new->protocol=old->protocol;
- new->dst=dst_clone(old->dst);
- new->h.raw=old->h.raw+offset;
- new->nh.raw=old->nh.raw+offset;
- new->mac.raw=old->mac.raw+offset;
- memcpy(new->cb, old->cb, sizeof(old->cb));
- atomic_set(&new->users, 1);
- new->pkt_type=old->pkt_type;
- new->stamp=old->stamp;
- new->destructor = NULL;
- new->security=old->security;
-#ifdef CONFIG_NETFILTER
- new->nfmark=old->nfmark;
- new->nfcache=old->nfcache;
- new->nfct=old->nfct;
- nf_conntrack_get(new->nfct);
-#ifdef CONFIG_NETFILTER_DEBUG
- new->nf_debug=old->nf_debug;
-#endif
-#endif
-#ifdef CONFIG_NET_SCHED
- new->tc_index = old->tc_index;
-#endif
-}
-
-/**
- * skb_copy - create private copy of an sk_buff
- * @skb: buffer to copy
- * @gfp_mask: allocation priority
- *
- * Make a copy of both an &sk_buff and its data. This is used when the
- * caller wishes to modify the data and needs a private copy of the
- * data to alter. Returns %NULL on failure or the pointer to the buffer
- * on success. The returned buffer has a reference count of 1.
- *
- * As by-product this function converts non-linear &sk_buff to linear
- * one, so that &sk_buff becomes completely private and caller is allowed
- * to modify all the data of returned buffer. This means that this
- * function is not recommended for use in circumstances when only
- * header is going to be modified. Use pskb_copy() instead.
- */
-
-struct sk_buff *skb_copy(const struct sk_buff *skb, int gfp_mask)
-{
- struct sk_buff *n;
- int headerlen = skb->data-skb->head;
-
- /*
- * Allocate the copy buffer
- */
- n=alloc_skb(skb->end - skb->head + skb->data_len, gfp_mask);
- if(n==NULL)
- return NULL;
-
- /* Set the data pointer */
- skb_reserve(n,headerlen);
- /* Set the tail pointer and length */
- skb_put(n,skb->len);
- n->csum = skb->csum;
- n->ip_summed = skb->ip_summed;
-
- if (skb_copy_bits(skb, -headerlen, n->head, headerlen+skb->len))
- BUG();
-
- copy_skb_header(n, skb);
-
- return n;
-}
-
-/* Keep head the same: replace data */
-int skb_linearize(struct sk_buff *skb, int gfp_mask)
-{
- unsigned int size;
- u8 *data;
- long offset;
- int headerlen = skb->data - skb->head;
- int expand = (skb->tail+skb->data_len) - skb->end;
-
- if (skb_shared(skb))
- BUG();
-
- if (expand <= 0)
- expand = 0;
-
- size = (skb->end - skb->head + expand);
- size = SKB_DATA_ALIGN(size);
- data = kmalloc(size + sizeof(struct skb_shared_info), gfp_mask);
- if (data == NULL)
- return -ENOMEM;
-
- /* Copy entire thing */
- if (skb_copy_bits(skb, -headerlen, data, headerlen+skb->len))
- BUG();
-
- /* Offset between the two in bytes */
- offset = data - skb->head;
-
- /* Free old data. */
- skb_release_data(skb);
-
- skb->head = data;
- skb->end = data + size;
-
- /* Set up new pointers */
- skb->h.raw += offset;
- skb->nh.raw += offset;
- skb->mac.raw += offset;
- skb->tail += offset;
- skb->data += offset;
-
- /* Set up shinfo */
- atomic_set(&(skb_shinfo(skb)->dataref), 1);
- skb_shinfo(skb)->nr_frags = 0;
- skb_shinfo(skb)->frag_list = NULL;
-
- /* We are no longer a clone, even if we were. */
- skb->cloned = 0;
-
- skb->tail += skb->data_len;
- skb->data_len = 0;
- return 0;
-}
-
-
-/**
- * pskb_copy - create copy of an sk_buff with private head.
- * @skb: buffer to copy
- * @gfp_mask: allocation priority
- *
- * Make a copy of both an &sk_buff and part of its data, located
- * in header. Fragmented data remain shared. This is used when
- * the caller wishes to modify only header of &sk_buff and needs
- * private copy of the header to alter. Returns %NULL on failure
- * or the pointer to the buffer on success.
- * The returned buffer has a reference count of 1.
- */
-
-struct sk_buff *pskb_copy(struct sk_buff *skb, int gfp_mask)
-{
- struct sk_buff *n;
-
- /*
- * Allocate the copy buffer
- */
- n=alloc_skb(skb->end - skb->head, gfp_mask);
- if(n==NULL)
- return NULL;
-
- /* Set the data pointer */
- skb_reserve(n,skb->data-skb->head);
- /* Set the tail pointer and length */
- skb_put(n,skb_headlen(skb));
- /* Copy the bytes */
- memcpy(n->data, skb->data, n->len);
- n->csum = skb->csum;
- n->ip_summed = skb->ip_summed;
-
- n->data_len = skb->data_len;
- n->len = skb->len;
-
- if (skb_shinfo(skb)->nr_frags) {
- int i;
-
- for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
- skb_shinfo(n)->frags[i] = skb_shinfo(skb)->frags[i];
- get_page(skb_shinfo(n)->frags[i].page);
- }
- skb_shinfo(n)->nr_frags = i;
- }
-
- if (skb_shinfo(skb)->frag_list) {
- skb_shinfo(n)->frag_list = skb_shinfo(skb)->frag_list;
- skb_clone_fraglist(n);
- }
-
- copy_skb_header(n, skb);
-
- return n;
-}
-
-/**
- * pskb_expand_head - reallocate header of &sk_buff
- * @skb: buffer to reallocate
- * @nhead: room to add at head
- * @ntail: room to add at tail
- * @gfp_mask: allocation priority
- *
- * Expands (or creates identical copy, if &nhead and &ntail are zero)
- * header of skb. &sk_buff itself is not changed. &sk_buff MUST have
- * reference count of 1. Returns zero in the case of success or error,
- * if expansion failed. In the last case, &sk_buff is not changed.
- *
- * All the pointers pointing into skb header may change and must be
- * reloaded after call to this function.
- */
-
-int pskb_expand_head(struct sk_buff *skb, int nhead, int ntail, int gfp_mask)
-{
- int i;
- u8 *data;
- int size = nhead + (skb->end - skb->head) + ntail;
- long off;
-
- if (skb_shared(skb))
- BUG();
-
- size = SKB_DATA_ALIGN(size);
-
- data = kmalloc(size + sizeof(struct skb_shared_info), gfp_mask);
- if (data == NULL)
- goto nodata;
-
- /* Copy only real data... and, alas, header. This should be
- * optimized for the cases when header is void. */
- memcpy(data+nhead, skb->head, skb->tail-skb->head);
- memcpy(data+size, skb->end, sizeof(struct skb_shared_info));
-
- for (i=0; i<skb_shinfo(skb)->nr_frags; i++)
- get_page(skb_shinfo(skb)->frags[i].page);
-
- if (skb_shinfo(skb)->frag_list)
- skb_clone_fraglist(skb);
-
- skb_release_data(skb);
-
- off = (data+nhead) - skb->head;
-
- skb->head = data;
- skb->end = data+size;
-
- skb->data += off;
- skb->tail += off;
- skb->mac.raw += off;
- skb->h.raw += off;
- skb->nh.raw += off;
- skb->cloned = 0;
- atomic_set(&skb_shinfo(skb)->dataref, 1);
- return 0;
-
-nodata:
- return -ENOMEM;
-}
-
-/* Make private copy of skb with writable head and some headroom */
-
-struct sk_buff *
-skb_realloc_headroom(struct sk_buff *skb, unsigned int headroom)
-{
- struct sk_buff *skb2;
- int delta = headroom - skb_headroom(skb);
-
- if (delta <= 0)
- return pskb_copy(skb, GFP_ATOMIC);
-
- skb2 = skb_clone(skb, GFP_ATOMIC);
- if (skb2 == NULL ||
- !pskb_expand_head(skb2, SKB_DATA_ALIGN(delta), 0, GFP_ATOMIC))
- return skb2;
-
- kfree_skb(skb2);
- return NULL;
-}
-
-
-/**
- * skb_copy_expand - copy and expand sk_buff
- * @skb: buffer to copy
- * @newheadroom: new free bytes at head
- * @newtailroom: new free bytes at tail
- * @gfp_mask: allocation priority
- *
- * Make a copy of both an &sk_buff and its data and while doing so
- * allocate additional space.
- *
- * This is used when the caller wishes to modify the data and needs a
- * private copy of the data to alter as well as more space for new fields.
- * Returns %NULL on failure or the pointer to the buffer
- * on success. The returned buffer has a reference count of 1.
- *
- * You must pass %GFP_ATOMIC as the allocation priority if this function
- * is called from an interrupt.
- */
-
-
-struct sk_buff *skb_copy_expand(const struct sk_buff *skb,
- int newheadroom,
- int newtailroom,
- int gfp_mask)
-{
- struct sk_buff *n;
-
- /*
- * Allocate the copy buffer
- */
-
- n=alloc_skb(newheadroom + skb->len + newtailroom,
- gfp_mask);
- if(n==NULL)
- return NULL;
-
- skb_reserve(n,newheadroom);
-
- /* Set the tail pointer and length */
- skb_put(n,skb->len);
-
- /* Copy the data only. */
- if (skb_copy_bits(skb, 0, n->data, skb->len))
- BUG();
-
- copy_skb_header(n, skb);
- return n;
-}
-
-/**
- * skb_pad - zero pad the tail of an skb
- * @skb: buffer to pad
- * @pad: space to pad
- *
- * Ensure that a buffer is followed by a padding area that is zero
- * filled. Used by network drivers which may DMA or transfer data
- * beyond the buffer end onto the wire.
- *
- * May return NULL in out of memory cases.
- */
-
-struct sk_buff *skb_pad(struct sk_buff *skb, int pad)
-{
- struct sk_buff *nskb;
-
- /* If the skbuff is non linear tailroom is always zero.. */
- if(skb_tailroom(skb) >= pad)
- {
- memset(skb->data+skb->len, 0, pad);
- return skb;
- }
-
- nskb = skb_copy_expand(skb, skb_headroom(skb), skb_tailroom(skb) + pad,
GFP_ATOMIC);
- kfree_skb(skb);
- if(nskb)
- memset(nskb->data+nskb->len, 0, pad);
- return nskb;
-}
-
-/* Trims skb to length len. It can change skb pointers, if "realloc" is 1.
- * If realloc==0 and trimming is impossible without change of data,
- * it is BUG().
- */
-
-int ___pskb_trim(struct sk_buff *skb, unsigned int len, int realloc)
-{
- int offset = skb_headlen(skb);
- int nfrags = skb_shinfo(skb)->nr_frags;
- int i;
-
- for (i=0; i<nfrags; i++) {
- int end = offset + skb_shinfo(skb)->frags[i].size;
- if (end > len) {
- if (skb_cloned(skb)) {
- if (!realloc)
- BUG();
- if (pskb_expand_head(skb, 0, 0, GFP_ATOMIC))
- return -ENOMEM;
- }
- if (len <= offset) {
- put_page(skb_shinfo(skb)->frags[i].page);
- skb_shinfo(skb)->nr_frags--;
- } else {
- skb_shinfo(skb)->frags[i].size = len-offset;
- }
- }
- offset = end;
- }
-
- if (offset < len) {
- skb->data_len -= skb->len - len;
- skb->len = len;
- } else {
- if (len <= skb_headlen(skb)) {
- skb->len = len;
- skb->data_len = 0;
- skb->tail = skb->data + len;
- if (skb_shinfo(skb)->frag_list && !skb_cloned(skb))
- skb_drop_fraglist(skb);
- } else {
- skb->data_len -= skb->len - len;
- skb->len = len;
- }
- }
-
- return 0;
-}
-
-/**
- * __pskb_pull_tail - advance tail of skb header
- * @skb: buffer to reallocate
- * @delta: number of bytes to advance tail
- *
- * The function makes a sense only on a fragmented &sk_buff,
- * it expands header moving its tail forward and copying necessary
- * data from fragmented part.
- *
- * &sk_buff MUST have reference count of 1.
- *
- * Returns %NULL (and &sk_buff does not change) if pull failed
- * or value of new tail of skb in the case of success.
- *
- * All the pointers pointing into skb header may change and must be
- * reloaded after call to this function.
- */
-
-/* Moves tail of skb head forward, copying data from fragmented part,
- * when it is necessary.
- * 1. It may fail due to malloc failure.
- * 2. It may change skb pointers.
- *
- * It is pretty complicated. Luckily, it is called only in exceptional cases.
- */
-unsigned char * __pskb_pull_tail(struct sk_buff *skb, int delta)
-{
- int i, k, eat;
-
- /* If skb has not enough free space at tail, get new one
- * plus 128 bytes for future expansions. If we have enough
- * room at tail, reallocate without expansion only if skb is cloned.
- */
- eat = (skb->tail+delta) - skb->end;
-
- if (eat > 0 || skb_cloned(skb)) {
- if (pskb_expand_head(skb, 0, eat>0 ? eat+128 : 0, GFP_ATOMIC))
- return NULL;
- }
-
- if (skb_copy_bits(skb, skb_headlen(skb), skb->tail, delta))
- BUG();
-
- /* Optimization: no fragments, no reasons to preestimate
- * size of pulled pages. Superb.
- */
- if (skb_shinfo(skb)->frag_list == NULL)
- goto pull_pages;
-
- /* Estimate size of pulled pages. */
- eat = delta;
- for (i=0; i<skb_shinfo(skb)->nr_frags; i++) {
- if (skb_shinfo(skb)->frags[i].size >= eat)
- goto pull_pages;
- eat -= skb_shinfo(skb)->frags[i].size;
- }
-
- /* If we need update frag list, we are in troubles.
- * Certainly, it possible to add an offset to skb data,
- * but taking into account that pulling is expected to
- * be very rare operation, it is worth to fight against
- * further bloating skb head and crucify ourselves here instead.
- * Pure masohism, indeed. 8)8)
- */
- if (eat) {
- struct sk_buff *list = skb_shinfo(skb)->frag_list;
- struct sk_buff *clone = NULL;
- struct sk_buff *insp = NULL;
-
- do {
- if (list == NULL)
- BUG();
-
- if (list->len <= eat) {
- /* Eaten as whole. */
- eat -= list->len;
- list = list->next;
- insp = list;
- } else {
- /* Eaten partially. */
-
- if (skb_shared(list)) {
- /* Sucks! We need to fork list. :-( */
- clone = skb_clone(list, GFP_ATOMIC);
- if (clone == NULL)
- return NULL;
- insp = list->next;
- list = clone;
- } else {
- /* This may be pulled without
- * problems. */
- insp = list;
- }
- if (pskb_pull(list, eat) == NULL) {
- if (clone)
- kfree_skb(clone);
- return NULL;
- }
- break;
- }
- } while (eat);
-
- /* Free pulled out fragments. */
- while ((list = skb_shinfo(skb)->frag_list) != insp) {
- skb_shinfo(skb)->frag_list = list->next;
- kfree_skb(list);
- }
- /* And insert new clone at head. */
- if (clone) {
- clone->next = list;
- skb_shinfo(skb)->frag_list = clone;
- }
- }
- /* Success! Now we may commit changes to skb data. */
-
-pull_pages:
- eat = delta;
- k = 0;
- for (i=0; i<skb_shinfo(skb)->nr_frags; i++) {
- if (skb_shinfo(skb)->frags[i].size <= eat) {
- put_page(skb_shinfo(skb)->frags[i].page);
- eat -= skb_shinfo(skb)->frags[i].size;
- } else {
- skb_shinfo(skb)->frags[k] = skb_shinfo(skb)->frags[i];
- if (eat) {
- skb_shinfo(skb)->frags[k].page_offset += eat;
- skb_shinfo(skb)->frags[k].size -= eat;
- eat = 0;
- }
- k++;
- }
- }
- skb_shinfo(skb)->nr_frags = k;
-
- skb->tail += delta;
- skb->data_len -= delta;
-
- return skb->tail;
-}
-
-/* Copy some data bits from skb to kernel buffer. */
-
-int skb_copy_bits(const struct sk_buff *skb, int offset, void *to, int len)
-{
- int i, copy;
- int start = skb->len - skb->data_len;
-
- if (offset > (int)skb->len-len)
- goto fault;
-
- /* Copy header. */
- if ((copy = start-offset) > 0) {
- if (copy > len)
- copy = len;
- memcpy(to, skb->data + offset, copy);
- if ((len -= copy) == 0)
- return 0;
- offset += copy;
- to += copy;
- }
-
- for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
- int end;
-
- BUG_TRAP(start <= offset+len);
-
- end = start + skb_shinfo(skb)->frags[i].size;
- if ((copy = end-offset) > 0) {
- u8 *vaddr;
-
- if (copy > len)
- copy = len;
-
- vaddr = kmap_skb_frag(&skb_shinfo(skb)->frags[i]);
- memcpy(to, vaddr+skb_shinfo(skb)->frags[i].page_offset+
- offset-start, copy);
- kunmap_skb_frag(vaddr);
-
- if ((len -= copy) == 0)
- return 0;
- offset += copy;
- to += copy;
- }
- start = end;
- }
-
- if (skb_shinfo(skb)->frag_list) {
- struct sk_buff *list;
-
- for (list = skb_shinfo(skb)->frag_list; list; list=list->next) {
- int end;
-
- BUG_TRAP(start <= offset+len);
-
- end = start + list->len;
- if ((copy = end-offset) > 0) {
- if (copy > len)
- copy = len;
- if (skb_copy_bits(list, offset-start, to, copy))
- goto fault;
- if ((len -= copy) == 0)
- return 0;
- offset += copy;
- to += copy;
- }
- start = end;
- }
- }
- if (len == 0)
- return 0;
-
-fault:
- return -EFAULT;
-}
-
-/* Checksum skb data. */
-
-unsigned int skb_checksum(const struct sk_buff *skb, int offset, int len,
unsigned int csum)
-{
- int i, copy;
- int start = skb->len - skb->data_len;
- int pos = 0;
-
- /* Checksum header. */
- if ((copy = start-offset) > 0) {
- if (copy > len)
- copy = len;
- csum = csum_partial(skb->data+offset, copy, csum);
- if ((len -= copy) == 0)
- return csum;
- offset += copy;
- pos = copy;
- }
-
- for (i=0; i<skb_shinfo(skb)->nr_frags; i++) {
- int end;
-
- BUG_TRAP(start <= offset+len);
-
- end = start + skb_shinfo(skb)->frags[i].size;
- if ((copy = end-offset) > 0) {
- unsigned int csum2;
- u8 *vaddr;
- skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
-
- if (copy > len)
- copy = len;
- vaddr = kmap_skb_frag(frag);
- csum2 = csum_partial(vaddr + frag->page_offset +
- offset-start, copy, 0);
- kunmap_skb_frag(vaddr);
- csum = csum_block_add(csum, csum2, pos);
- if (!(len -= copy))
- return csum;
- offset += copy;
- pos += copy;
- }
- start = end;
- }
-
- if (skb_shinfo(skb)->frag_list) {
- struct sk_buff *list;
-
- for (list = skb_shinfo(skb)->frag_list; list; list=list->next) {
- int end;
-
- BUG_TRAP(start <= offset+len);
-
- end = start + list->len;
- if ((copy = end-offset) > 0) {
- unsigned int csum2;
- if (copy > len)
- copy = len;
- csum2 = skb_checksum(list, offset-start, copy,
0);
- csum = csum_block_add(csum, csum2, pos);
- if ((len -= copy) == 0)
- return csum;
- offset += copy;
- pos += copy;
- }
- start = end;
- }
- }
- if (len == 0)
- return csum;
-
- BUG();
- return csum;
-}
-
-/* Both of above in one bottle. */
-
-unsigned int skb_copy_and_csum_bits(const struct sk_buff *skb, int offset, u8
*to, int len, unsigned int csum)
-{
- int i, copy;
- int start = skb->len - skb->data_len;
- int pos = 0;
-
- /* Copy header. */
- if ((copy = start-offset) > 0) {
- if (copy > len)
- copy = len;
- csum = csum_partial_copy_nocheck(skb->data+offset, to, copy,
csum);
- if ((len -= copy) == 0)
- return csum;
- offset += copy;
- to += copy;
- pos = copy;
- }
-
- for (i=0; i<skb_shinfo(skb)->nr_frags; i++) {
- int end;
-
- BUG_TRAP(start <= offset+len);
-
- end = start + skb_shinfo(skb)->frags[i].size;
- if ((copy = end-offset) > 0) {
- unsigned int csum2;
- u8 *vaddr;
- skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
-
- if (copy > len)
- copy = len;
- vaddr = kmap_skb_frag(frag);
- csum2 = csum_partial_copy_nocheck(vaddr +
frag->page_offset +
- offset-start, to, copy,
0);
- kunmap_skb_frag(vaddr);
- csum = csum_block_add(csum, csum2, pos);
- if (!(len -= copy))
- return csum;
- offset += copy;
- to += copy;
- pos += copy;
- }
- start = end;
- }
-
- if (skb_shinfo(skb)->frag_list) {
- struct sk_buff *list;
-
- for (list = skb_shinfo(skb)->frag_list; list; list=list->next) {
- unsigned int csum2;
- int end;
-
- BUG_TRAP(start <= offset+len);
-
- end = start + list->len;
- if ((copy = end-offset) > 0) {
- if (copy > len)
- copy = len;
- csum2 = skb_copy_and_csum_bits(list,
offset-start, to, copy, 0);
- csum = csum_block_add(csum, csum2, pos);
- if ((len -= copy) == 0)
- return csum;
- offset += copy;
- to += copy;
- pos += copy;
- }
- start = end;
- }
- }
- if (len == 0)
- return csum;
-
- BUG();
- return csum;
-}
-
-void skb_copy_and_csum_dev(const struct sk_buff *skb, u8 *to)
-{
- unsigned int csum;
- long csstart;
-
- if (skb->ip_summed == CHECKSUM_HW)
- csstart = skb->h.raw - skb->data;
- else
- csstart = skb->len - skb->data_len;
-
- if (csstart > skb->len - skb->data_len)
- BUG();
-
- memcpy(to, skb->data, csstart);
-
- csum = 0;
- if (csstart != skb->len)
- csum = skb_copy_and_csum_bits(skb, csstart, to+csstart,
- skb->len-csstart, 0);
-
- if (skb->ip_summed == CHECKSUM_HW) {
- long csstuff = csstart + skb->csum;
-
- *((unsigned short *)(to + csstuff)) = csum_fold(csum);
- }
-}
-
-#if 0
-/*
- * Tune the memory allocator for a new MTU size.
- */
-void skb_add_mtu(int mtu)
-{
- /* Must match allocation in alloc_skb */
- mtu = SKB_DATA_ALIGN(mtu) + sizeof(struct skb_shared_info);
-
- kmem_add_cache_size(mtu);
-}
-#endif
-
-void __init skb_init(void)
-{
- int i;
-
- skbuff_head_cache = kmem_cache_create("skbuff_head_cache",
- sizeof(struct sk_buff),
- 0,
- SLAB_HWCACHE_ALIGN,
- skb_headerinit, NULL);
- if (!skbuff_head_cache)
- panic("cannot create skbuff cache");
-
- for (i=0; i<NR_CPUS; i++)
- skb_queue_head_init(&skb_head_pool[i].list);
-}
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.6.11-xen-sparse/arch/xen/Kconfig
--- a/linux-2.6.11-xen-sparse/arch/xen/Kconfig Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,196 +0,0 @@
-#
-# For a description of the syntax of this configuration file,
-# see Documentation/kbuild/kconfig-language.txt.
-#
-
-mainmenu "Linux Kernel Configuration"
-
-config XEN
- bool
- default y
- help
- This is the Linux Xen port.
-
-config ARCH_XEN
- bool
- default y
-
-
-config NO_IDLE_HZ
- bool
- default y
-
-
-menu "XEN"
-
-config XEN_PRIVILEGED_GUEST
- bool "Privileged Guest (domain 0)"
- default n
- select XEN_PHYSDEV_ACCESS
- help
- Support for privileged operation (domain 0)
-
-config XEN_PHYSDEV_ACCESS
- bool "Physical device access"
- default XEN_PRIVILEGED_GUEST
- help
- Assume access is available to physical hardware devices
- (e.g., hard drives, network cards). This allows you to configure
- such devices and also includes some low-level support that is
- otherwise not compiled into the kernel.
-
-config XEN_BLKDEV_BACKEND
- bool "Block-device backend driver"
- depends on XEN_PHYSDEV_ACCESS
- default y
- help
- The block-device backend driver allows the kernel to export its
- block devices to other guests via a high-performance shared-memory
- interface.
-
-config XEN_BLKDEV_TAP_BE
- bool "Block Tap support for backend driver (DANGEROUS)"
- depends on XEN_BLKDEV_BACKEND
- default n
- help
- If you intend to use the block tap driver, the backend domain will
- not know the domain id of the real frontend, and so will not be able
- to map its data pages. This modifies the backend to attempt to map
- from both the tap domain and the real frontend. This presents a
- security risk, and so should ONLY be used for development
- with the blktap. This option will be removed as the block drivers
are
- modified to use grant tables.
-
-config XEN_BLKDEV_GRANT
- bool "Grant table substrate for block drivers"
- depends on !XEN_BLKDEV_TAP_BE
- default y
- help
- This introduces the use of grant tables as a data exhange mechanism
- between the frontend and backend block drivers. This currently
- conflicts with the block tap.
-
-config XEN_NETDEV_BACKEND
- bool "Network-device backend driver"
- depends on XEN_PHYSDEV_ACCESS
- default y
- help
- The network-device backend driver allows the kernel to export its
- network devices to other guests via a high-performance shared-memory
- interface.
-
-config XEN_BLKDEV_FRONTEND
- bool "Block-device frontend driver"
- default y
- help
- The block-device frontend driver allows the kernel to access block
- devices mounted within another guest OS. Unless you are building a
- dedicated device-driver domain, or your master control domain
- (domain 0), then you almost certainly want to say Y here.
-
-config XEN_NETDEV_FRONTEND
- bool "Network-device frontend driver"
- default y
- help
- The network-device frontend driver allows the kernel to access
- network interfaces within another guest OS. Unless you are building a
- dedicated device-driver domain, or your master control domain
- (domain 0), then you almost certainly want to say Y here.
-
-config XEN_NETDEV_FRONTEND_PIPELINED_TRANSMITTER
- bool "Pipelined transmitter (DANGEROUS)"
- depends on XEN_NETDEV_FRONTEND
- default n
- help
- The driver will assume that the backend is pipelining packets for
- transmission: whenever packets are pending in the remote backend,
- the driver will not send asynchronous notifications when it queues
- additional packets for transmission.
- If the backend is a dumb domain, such as a transparent Ethernet
- bridge with no local IP interface, it is safe to say Y here to get
- slightly lower network overhead.
- If the backend has a local IP interface; or may be doing smart things
- like reassembling packets to perform firewall filtering; or if you
- are unsure; or if you experience network hangs when this option is
- enabled; then you must say N here.
-
-config XEN_BLKDEV_TAP
- bool "Block device tap driver"
- default n
- help
- This driver allows a VM to interact on block device channels
- to other VMs. Block messages may be passed through or redirected
- to a character device, allowing device prototyping in application
- space. Odds are that you want to say N here.
-
-config XEN_SHADOW_MODE
- bool "Fake shadow mode"
- default n
- help
- fakes out a shadow mode kernel
-
-
-config XEN_SCRUB_PAGES
- bool "Scrub memory before freeing it to Xen"
- default y
- help
- Erase memory contents before freeing it back to Xen's global
- pool. This ensures that any secrets contained within that
- memory (e.g., private keys) cannot be found by other guests that
- may be running on the machine. Most people will want to say Y here.
- If security is not a concern then you may increase performance by
- saying N.
-
-choice
- prompt "Processor Type"
- default XEN_X86
-
-config XEN_X86
- bool "X86"
- help
- Choose this option if your computer is a X86 architecture.
-
-config XEN_X86_64
- bool "X86_64"
- help
- Choose this option if your computer is a X86_64 architecture.
-
-endchoice
-
-endmenu
-
-config HAVE_ARCH_DEV_ALLOC_SKB
- bool
- default y
-
-source "init/Kconfig"
-
-if XEN_X86
-source "arch/xen/i386/Kconfig"
-endif
-
-if XEN_X86_64
-source "arch/xen/x86_64/Kconfig"
-endif
-
-menu "Executable file formats"
-
-source "fs/Kconfig.binfmt"
-
-endmenu
-
-source "arch/xen/Kconfig.drivers"
-
-if XEN_PRIVILEGED_GUEST
-menu "Power management options"
-source "drivers/acpi/Kconfig"
-endmenu
-endif
-
-source "fs/Kconfig"
-
-source "security/Kconfig"
-
-source "crypto/Kconfig"
-
-source "lib/Kconfig"
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/Kconfig.drivers
--- a/linux-2.6.11-xen-sparse/arch/xen/Kconfig.drivers Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,94 +0,0 @@
-# arch/xen/Kconfig.drivers
-
-menu "Device Drivers"
-
-source "drivers/base/Kconfig"
-
-if XEN_PHYSDEV_ACCESS
-source "drivers/mtd/Kconfig"
-source "drivers/parport/Kconfig"
-source "drivers/pnp/Kconfig"
-endif
-
-source "drivers/block/Kconfig"
-
-if XEN_PHYSDEV_ACCESS
-source "drivers/ide/Kconfig"
-endif
-
-source "drivers/scsi/Kconfig"
-
-if XEN_PHYSDEV_ACCESS
-source "drivers/cdrom/Kconfig"
-endif
-
-source "drivers/md/Kconfig"
-
-if XEN_PHYSDEV_ACCESS
-source "drivers/message/fusion/Kconfig"
-source "drivers/ieee1394/Kconfig"
-source "drivers/message/i2o/Kconfig"
-endif
-
-source "net/Kconfig"
-
-if XEN_PHYSDEV_ACCESS
-source "drivers/isdn/Kconfig"
-source "drivers/telephony/Kconfig"
-source "drivers/input/Kconfig"
-source "drivers/char/Kconfig"
-source "drivers/i2c/Kconfig"
-source "drivers/w1/Kconfig"
-source "drivers/misc/Kconfig"
-source "drivers/media/Kconfig"
-source "drivers/video/Kconfig"
-source "sound/Kconfig"
-source "drivers/usb/Kconfig"
-source "drivers/mmc/Kconfig"
-source "drivers/infiniband/Kconfig"
-endif
-
-if !XEN_PHYSDEV_ACCESS
-
-menu "Character devices"
-
-config UNIX98_PTYS
- bool
- default y
-
-config LEGACY_PTYS
- bool "Legacy (BSD) PTY support"
- default y
- ---help---
- A pseudo terminal (PTY) is a software device consisting of two
- halves: a master and a slave. The slave device behaves identical to
- a physical terminal; the master device is used by a process to
- read data from and write data to the slave, thereby emulating a
- terminal. Typical programs for the master side are telnet servers
- and xterms.
-
- Linux has traditionally used the BSD-like names /dev/ptyxx
- for masters and /dev/ttyxx for slaves of pseudo
- terminals. This scheme has a number of problems, including
- security. This option enables these legacy devices; on most
- systems, it is safe to say N.
-
-
-config LEGACY_PTY_COUNT
- int "Maximum number of legacy PTY in use"
- depends on LEGACY_PTYS
- range 1 256
- default "256"
- ---help---
- The maximum number of legacy PTYs that can be used at any one time.
- The default is 256, and should be more than enough. Embedded
- systems may want to reduce this to save memory.
-
- When not in use, each legacy PTY occupies 12 bytes on 32-bit
- architectures and 24 bytes on 64-bit architectures.
-
-endmenu
-
-endif
-
-endmenu
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.6.11-xen-sparse/arch/xen/Makefile
--- a/linux-2.6.11-xen-sparse/arch/xen/Makefile Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,91 +0,0 @@
-#
-# xen/Makefile
-#
-# This file is included by the global makefile so that you can add your own
-# architecture-specific flags and dependencies. Remember to do have actions
-# for "archclean" cleaning up for this architecture.
-#
-# This file is subject to the terms and conditions of the GNU General Public
-# License. See the file "COPYING" in the main directory of this archive
-# for more details.
-#
-# Copyright (C) 2004 by Christian Limpach
-#
-
-XENARCH := $(subst ",,$(CONFIG_XENARCH))
-
-# pick up headers from include/asm-xen/asm in preference over include/asm
-NOSTDINC_FLAGS = -nostdinc -iwithprefix include/asm-xen -Iinclude/asm-xen
-iwithprefix include
-ifneq ($(KBUILD_SRC),)
-NOSTDINC_FLAGS += -I$(srctree)/include/asm-xen
-endif
-
-# make uname return the processor arch
-UTS_MACHINE := $(XENARCH)
-
-core-y += arch/xen/kernel/
-
-.PHONY: include2/asm
-include2/asm:
-ifneq ($(KBUILD_SRC),)
- @echo ' SYMLINK ../include/asm-$(XENARCH) -> include2/asm'
- $(Q)ln -fsn ../include/asm-$(XENARCH) include2/asm
-endif
-
-include/.asm-ignore: include/asm
- @rm -f include/.asm-ignore
- @mv include/asm include/.asm-ignore
- @echo ' SYMLINK include/asm -> include/asm-$(XENARCH)'
- $(Q)if [ ! -d include ]; then mkdir -p include; fi;
- @ln -fsn $(srctree)/include/asm-$(XENARCH) include/asm
-
-include/asm-xen/asm:
- @echo ' SYMLINK $@ -> include/asm-xen/asm-$(XENARCH)'
- @mkdir -p include/asm-xen
- @ln -fsn $(srctree)/include/asm-xen/asm-$(XENARCH) $@
-
-arch/xen/arch:
- @rm -f $@
- @mkdir -p arch/xen
- @ln -fsn $(srctree)/arch/xen/$(XENARCH) $@
-
-arch/$(XENARCH)/kernel/asm-offsets.s: include/asm include/linux/version.h \
- include/config/MARKER
-
-include/asm-$(ARCH)/asm_offsets.h: arch/$(XENARCH)/kernel/asm-offsets.s
- $(call filechk,gen-asm-offsets)
-
-prepare: include/.asm-ignore include/asm-xen/asm \
- arch/xen/arch include/asm-$(ARCH)/asm_offsets.h include2/asm ;
-
-all: vmlinuz
-
-vmlinuz: vmlinux
- $(Q)$(MAKE) $(build)=arch/xen/boot vmlinuz
-
-XINSTALL_NAME ?= $(KERNELRELEASE)
-install: vmlinuz
- mkdir -p $(INSTALL_PATH)/boot
- ln -f -s vmlinuz-$(XINSTALL_NAME)$(INSTALL_SUFFIX)
$(INSTALL_PATH)/boot/vmlinuz-$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(XENGUEST)$(INSTALL_SUFFIX)
- rm -f $(INSTALL_PATH)/boot/vmlinuz-$(XINSTALL_NAME)$(INSTALL_SUFFIX)
- install -m0644 vmlinuz
$(INSTALL_PATH)/boot/vmlinuz-$(XINSTALL_NAME)$(INSTALL_SUFFIX)
- install -m0644 vmlinux
$(INSTALL_PATH)/boot/vmlinux-syms-$(XINSTALL_NAME)$(INSTALL_SUFFIX)
- install -m0664 .config
$(INSTALL_PATH)/boot/config-$(XINSTALL_NAME)$(INSTALL_SUFFIX)
- install -m0664 System.map
$(INSTALL_PATH)/boot/System.map-$(XINSTALL_NAME)$(INSTALL_SUFFIX)
- ln -f -s vmlinuz-$(XINSTALL_NAME)$(INSTALL_SUFFIX)
$(INSTALL_PATH)/boot/vmlinuz-$(VERSION).$(PATCHLEVEL)$(XENGUEST)$(INSTALL_SUFFIX)
- mkdir -p $(INSTALL_PATH)/usr/include/xen/linux
- install -m0644 $(srctree)/include/asm-xen/linux-public/*.h
$(INSTALL_PATH)/usr/include/xen/linux
-
-archclean:
- @if [ -e arch/xen/arch ]; then $(MAKE) $(clean)=arch/xen/arch; fi;
- @rm -f arch/xen/arch include/.asm-ignore include/asm-xen/asm
- @rm -f vmlinux-stripped vmlinuz
-
-define archhelp
- echo '* vmlinuz - Compressed kernel image'
- echo ' install - Install kernel image and config file'
-endef
-
-ifneq ($(XENARCH),)
-include $(srctree)/arch/xen/$(XENARCH)/Makefile
-endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/boot/Makefile
--- a/linux-2.6.11-xen-sparse/arch/xen/boot/Makefile Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,8 +0,0 @@
-
-OBJCOPYFLAGS := -g --strip-unneeded
-
-vmlinuz: vmlinux-stripped FORCE
- $(call if_changed,gzip)
-
-vmlinux-stripped: vmlinux FORCE
- $(call if_changed,objcopy)
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/configs/xen0_defconfig_x86_64
--- a/linux-2.6.11-xen-sparse/arch/xen/configs/xen0_defconfig_x86_64 Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,1023 +0,0 @@
-#
-# Automatically generated make config: don't edit
-# Linux kernel version: 2.6.11.1-xen0
-# Tue May 10 11:07:02 2005
-#
-CONFIG_XEN=y
-CONFIG_ARCH_XEN=y
-CONFIG_NO_IDLE_HZ=y
-
-#
-# XEN
-#
-CONFIG_XEN_PRIVILEGED_GUEST=y
-CONFIG_XEN_PHYSDEV_ACCESS=y
-CONFIG_XEN_BLKDEV_BACKEND=y
-# CONFIG_XEN_BLKDEV_TAP_BE is not set
-CONFIG_XEN_BLKDEV_GRANT=y
-CONFIG_XEN_NETDEV_BACKEND=y
-CONFIG_XEN_BLKDEV_FRONTEND=y
-CONFIG_XEN_NETDEV_FRONTEND=y
-# CONFIG_XEN_NETDEV_FRONTEND_PIPELINED_TRANSMITTER is not set
-# CONFIG_XEN_BLKDEV_TAP is not set
-# CONFIG_XEN_SHADOW_MODE is not set
-CONFIG_XEN_SCRUB_PAGES=y
-# CONFIG_XEN_X86 is not set
-CONFIG_XEN_X86_64=y
-CONFIG_HAVE_ARCH_DEV_ALLOC_SKB=y
-
-#
-# Code maturity level options
-#
-CONFIG_EXPERIMENTAL=y
-# CONFIG_CLEAN_COMPILE is not set
-CONFIG_BROKEN=y
-CONFIG_BROKEN_ON_SMP=y
-
-#
-# General setup
-#
-CONFIG_LOCALVERSION=""
-CONFIG_SWAP=y
-CONFIG_SYSVIPC=y
-# CONFIG_POSIX_MQUEUE is not set
-# CONFIG_BSD_PROCESS_ACCT is not set
-CONFIG_SYSCTL=y
-# CONFIG_AUDIT is not set
-CONFIG_LOG_BUF_SHIFT=14
-# CONFIG_HOTPLUG is not set
-CONFIG_KOBJECT_UEVENT=y
-# CONFIG_IKCONFIG is not set
-# CONFIG_EMBEDDED is not set
-CONFIG_KALLSYMS=y
-# CONFIG_KALLSYMS_EXTRA_PASS is not set
-CONFIG_FUTEX=y
-CONFIG_EPOLL=y
-# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
-CONFIG_SHMEM=y
-CONFIG_CC_ALIGN_FUNCTIONS=0
-CONFIG_CC_ALIGN_LABELS=0
-CONFIG_CC_ALIGN_LOOPS=0
-CONFIG_CC_ALIGN_JUMPS=0
-# CONFIG_TINY_SHMEM is not set
-
-#
-# Loadable module support
-#
-CONFIG_MODULES=y
-CONFIG_MODULE_UNLOAD=y
-# CONFIG_MODULE_FORCE_UNLOAD is not set
-CONFIG_OBSOLETE_MODPARM=y
-# CONFIG_MODVERSIONS is not set
-# CONFIG_MODULE_SRCVERSION_ALL is not set
-CONFIG_KMOD=y
-CONFIG_XENARCH="x86_64"
-CONFIG_X86=y
-CONFIG_MMU=y
-CONFIG_GENERIC_ISA_DMA=y
-CONFIG_GENERIC_IOMAP=y
-CONFIG_X86_CMPXCHG=y
-CONFIG_X86_L1_CACHE_SHIFT=7
-CONFIG_RWSEM_GENERIC_SPINLOCK=y
-CONFIG_GENERIC_CALIBRATE_DELAY=y
-CONFIG_X86_GOOD_APIC=y
-# CONFIG_HPET_TIMER is not set
-# CONFIG_SMP is not set
-# CONFIG_PREEMPT is not set
-# CONFIG_MICROCODE is not set
-# CONFIG_X86_CPUID is not set
-# CONFIG_NUMA is not set
-# CONFIG_MTRR is not set
-CONFIG_X86_LOCAL_APIC=y
-CONFIG_X86_IO_APIC=y
-CONFIG_PCI=y
-CONFIG_PCI_DIRECT=y
-# CONFIG_PCI_MMCONFIG is not set
-CONFIG_EARLY_PRINTK=y
-CONFIG_GENERIC_HARDIRQS=y
-CONFIG_GENERIC_IRQ_PROBE=y
-
-#
-# X86_64 processor configuration
-#
-CONFIG_X86_64=y
-CONFIG_64BIT=y
-
-#
-# Processor type and features
-#
-# CONFIG_MPSC is not set
-CONFIG_GENERIC_CPU=y
-CONFIG_X86_L1_CACHE_BYTES=128
-# CONFIG_X86_TSC is not set
-# CONFIG_X86_MSR is not set
-# CONFIG_GART_IOMMU is not set
-CONFIG_DUMMY_IOMMU=y
-# CONFIG_X86_MCE is not set
-
-#
-# Power management options
-#
-# CONFIG_PM is not set
-
-#
-# CPU Frequency scaling
-#
-# CONFIG_CPU_FREQ is not set
-
-#
-# Bus options (PCI etc.)
-#
-# CONFIG_UNORDERED_IO is not set
-
-#
-# Executable file formats / Emulations
-#
-CONFIG_IA32_EMULATION=y
-# CONFIG_IA32_AOUT is not set
-#
-# Executable file formats
-#
-CONFIG_BINFMT_ELF=y
-CONFIG_BINFMT_MISC=y
-
-#
-# Device Drivers
-#
-
-#
-# Generic Driver Options
-#
-CONFIG_STANDALONE=y
-# CONFIG_PREVENT_FIRMWARE_BUILD is not set
-# CONFIG_FW_LOADER is not set
-
-#
-# Memory Technology Devices (MTD)
-#
-# CONFIG_MTD is not set
-
-#
-# Parallel port support
-#
-# CONFIG_PARPORT is not set
-
-#
-# Plug and Play support
-#
-# CONFIG_PNP is not set
-
-#
-# Block devices
-#
-CONFIG_BLK_DEV_FD=y
-# CONFIG_BLK_CPQ_DA is not set
-CONFIG_BLK_CPQ_CISS_DA=y
-# CONFIG_CISS_SCSI_TAPE is not set
-# CONFIG_BLK_DEV_DAC960 is not set
-# CONFIG_BLK_DEV_UMEM is not set
-# CONFIG_BLK_DEV_COW_COMMON is not set
-CONFIG_BLK_DEV_LOOP=y
-# CONFIG_BLK_DEV_CRYPTOLOOP is not set
-# CONFIG_BLK_DEV_NBD is not set
-# CONFIG_BLK_DEV_SX8 is not set
-CONFIG_BLK_DEV_RAM=y
-CONFIG_BLK_DEV_RAM_COUNT=16
-CONFIG_BLK_DEV_RAM_SIZE=16384
-CONFIG_BLK_DEV_INITRD=y
-CONFIG_INITRAMFS_SOURCE=""
-# CONFIG_LBD is not set
-# CONFIG_CDROM_PKTCDVD is not set
-
-#
-# IO Schedulers
-#
-CONFIG_IOSCHED_NOOP=y
-CONFIG_IOSCHED_AS=y
-CONFIG_IOSCHED_DEADLINE=y
-CONFIG_IOSCHED_CFQ=y
-# CONFIG_ATA_OVER_ETH is not set
-
-#
-# ATA/ATAPI/MFM/RLL support
-#
-CONFIG_IDE=y
-CONFIG_BLK_DEV_IDE=y
-
-#
-# Please see Documentation/ide.txt for help/info on IDE drives
-#
-# CONFIG_BLK_DEV_IDE_SATA is not set
-# CONFIG_BLK_DEV_HD_IDE is not set
-CONFIG_BLK_DEV_IDEDISK=y
-# CONFIG_IDEDISK_MULTI_MODE is not set
-CONFIG_BLK_DEV_IDECD=y
-# CONFIG_BLK_DEV_IDETAPE is not set
-# CONFIG_BLK_DEV_IDEFLOPPY is not set
-# CONFIG_BLK_DEV_IDESCSI is not set
-# CONFIG_IDE_TASK_IOCTL is not set
-
-#
-# IDE chipset support/bugfixes
-#
-CONFIG_IDE_GENERIC=y
-# CONFIG_BLK_DEV_CMD640 is not set
-CONFIG_BLK_DEV_IDEPCI=y
-# CONFIG_IDEPCI_SHARE_IRQ is not set
-# CONFIG_BLK_DEV_OFFBOARD is not set
-CONFIG_BLK_DEV_GENERIC=y
-# CONFIG_BLK_DEV_OPTI621 is not set
-# CONFIG_BLK_DEV_RZ1000 is not set
-CONFIG_BLK_DEV_IDEDMA_PCI=y
-# CONFIG_BLK_DEV_IDEDMA_FORCED is not set
-CONFIG_IDEDMA_PCI_AUTO=y
-# CONFIG_IDEDMA_ONLYDISK is not set
-# CONFIG_BLK_DEV_AEC62XX is not set
-# CONFIG_BLK_DEV_ALI15X3 is not set
-# CONFIG_BLK_DEV_AMD74XX is not set
-# CONFIG_BLK_DEV_ATIIXP is not set
-# CONFIG_BLK_DEV_CMD64X is not set
-# CONFIG_BLK_DEV_TRIFLEX is not set
-# CONFIG_BLK_DEV_CY82C693 is not set
-# CONFIG_BLK_DEV_CS5520 is not set
-# CONFIG_BLK_DEV_CS5530 is not set
-# CONFIG_BLK_DEV_HPT34X is not set
-# CONFIG_BLK_DEV_HPT366 is not set
-# CONFIG_BLK_DEV_SC1200 is not set
-CONFIG_BLK_DEV_PIIX=y
-# CONFIG_BLK_DEV_NS87415 is not set
-# CONFIG_BLK_DEV_PDC202XX_OLD is not set
-# CONFIG_BLK_DEV_PDC202XX_NEW is not set
-CONFIG_BLK_DEV_SVWKS=y
-# CONFIG_BLK_DEV_SIIMAGE is not set
-# CONFIG_BLK_DEV_SIS5513 is not set
-# CONFIG_BLK_DEV_SLC90E66 is not set
-# CONFIG_BLK_DEV_TRM290 is not set
-# CONFIG_BLK_DEV_VIA82CXXX is not set
-# CONFIG_IDE_ARM is not set
-CONFIG_BLK_DEV_IDEDMA=y
-# CONFIG_IDEDMA_IVB is not set
-CONFIG_IDEDMA_AUTO=y
-# CONFIG_BLK_DEV_HD is not set
-
-#
-# SCSI device support
-#
-CONFIG_SCSI=y
-CONFIG_SCSI_PROC_FS=y
-
-#
-# SCSI support type (disk, tape, CD-ROM)
-#
-CONFIG_BLK_DEV_SD=y
-# CONFIG_CHR_DEV_ST is not set
-# CONFIG_CHR_DEV_OSST is not set
-# CONFIG_BLK_DEV_SR is not set
-# CONFIG_CHR_DEV_SG is not set
-
-#
-# Some SCSI devices (e.g. CD jukebox) support multiple LUNs
-#
-# CONFIG_SCSI_MULTI_LUN is not set
-# CONFIG_SCSI_CONSTANTS is not set
-# CONFIG_SCSI_LOGGING is not set
-
-#
-# SCSI Transport Attributes
-#
-# CONFIG_SCSI_SPI_ATTRS is not set
-# CONFIG_SCSI_FC_ATTRS is not set
-# CONFIG_SCSI_ISCSI_ATTRS is not set
-
-#
-# SCSI low-level drivers
-#
-CONFIG_BLK_DEV_3W_XXXX_RAID=y
-# CONFIG_SCSI_3W_9XXX is not set
-# CONFIG_SCSI_ACARD is not set
-CONFIG_SCSI_AACRAID=y
-CONFIG_SCSI_AIC7XXX=y
-CONFIG_AIC7XXX_CMDS_PER_DEVICE=32
-CONFIG_AIC7XXX_RESET_DELAY_MS=15000
-# CONFIG_AIC7XXX_BUILD_FIRMWARE is not set
-CONFIG_AIC7XXX_DEBUG_ENABLE=y
-CONFIG_AIC7XXX_DEBUG_MASK=0
-CONFIG_AIC7XXX_REG_PRETTY_PRINT=y
-# CONFIG_SCSI_AIC7XXX_OLD is not set
-CONFIG_SCSI_AIC79XX=y
-CONFIG_AIC79XX_CMDS_PER_DEVICE=32
-CONFIG_AIC79XX_RESET_DELAY_MS=15000
-# CONFIG_AIC79XX_BUILD_FIRMWARE is not set
-# CONFIG_AIC79XX_ENABLE_RD_STRM is not set
-CONFIG_AIC79XX_DEBUG_ENABLE=y
-CONFIG_AIC79XX_DEBUG_MASK=0
-CONFIG_AIC79XX_REG_PRETTY_PRINT=y
-# CONFIG_SCSI_ADVANSYS is not set
-CONFIG_MEGARAID_NEWGEN=y
-# CONFIG_MEGARAID_MM is not set
-CONFIG_SCSI_SATA=y
-# CONFIG_SCSI_SATA_AHCI is not set
-# CONFIG_SCSI_SATA_SVW is not set
-CONFIG_SCSI_ATA_PIIX=y
-# CONFIG_SCSI_SATA_NV is not set
-CONFIG_SCSI_SATA_PROMISE=y
-# CONFIG_SCSI_SATA_QSTOR is not set
-CONFIG_SCSI_SATA_SX4=y
-CONFIG_SCSI_SATA_SIL=y
-# CONFIG_SCSI_SATA_SIS is not set
-# CONFIG_SCSI_SATA_ULI is not set
-# CONFIG_SCSI_SATA_VIA is not set
-# CONFIG_SCSI_SATA_VITESSE is not set
-CONFIG_SCSI_BUSLOGIC=y
-# CONFIG_SCSI_OMIT_FLASHPOINT is not set
-# CONFIG_SCSI_CPQFCTS is not set
-# CONFIG_SCSI_DMX3191D is not set
-# CONFIG_SCSI_EATA is not set
-# CONFIG_SCSI_EATA_PIO is not set
-# CONFIG_SCSI_FUTURE_DOMAIN is not set
-# CONFIG_SCSI_GDTH is not set
-# CONFIG_SCSI_IPS is not set
-# CONFIG_SCSI_INITIO is not set
-# CONFIG_SCSI_INIA100 is not set
-# CONFIG_SCSI_SYM53C8XX_2 is not set
-# CONFIG_SCSI_IPR is not set
-# CONFIG_SCSI_PCI2000 is not set
-# CONFIG_SCSI_PCI2220I is not set
-# CONFIG_SCSI_QLOGIC_ISP is not set
-# CONFIG_SCSI_QLOGIC_FC is not set
-# CONFIG_SCSI_QLOGIC_1280 is not set
-CONFIG_SCSI_QLA2XXX=y
-# CONFIG_SCSI_QLA21XX is not set
-# CONFIG_SCSI_QLA22XX is not set
-# CONFIG_SCSI_QLA2300 is not set
-# CONFIG_SCSI_QLA2322 is not set
-# CONFIG_SCSI_QLA6312 is not set
-# CONFIG_SCSI_DC395x is not set
-# CONFIG_SCSI_DC390T is not set
-# CONFIG_SCSI_DEBUG is not set
-
-#
-# Multi-device support (RAID and LVM)
-#
-# CONFIG_MD is not set
-
-#
-# Fusion MPT device support
-#
-CONFIG_FUSION=y
-CONFIG_FUSION_MAX_SGE=40
-# CONFIG_FUSION_CTL is not set
-
-#
-# IEEE 1394 (FireWire) support
-#
-# CONFIG_IEEE1394 is not set
-
-#
-# I2O device support
-#
-# CONFIG_I2O is not set
-
-#
-# Networking support
-#
-CONFIG_NET=y
-
-#
-# Networking options
-#
-CONFIG_PACKET=y
-# CONFIG_PACKET_MMAP is not set
-# CONFIG_NETLINK_DEV is not set
-CONFIG_UNIX=y
-# CONFIG_NET_KEY is not set
-CONFIG_INET=y
-# CONFIG_IP_MULTICAST is not set
-# CONFIG_IP_ADVANCED_ROUTER is not set
-CONFIG_IP_PNP=y
-CONFIG_IP_PNP_DHCP=y
-# CONFIG_IP_PNP_BOOTP is not set
-# CONFIG_IP_PNP_RARP is not set
-# CONFIG_NET_IPIP is not set
-# CONFIG_NET_IPGRE is not set
-# CONFIG_ARPD is not set
-# CONFIG_SYN_COOKIES is not set
-# CONFIG_INET_AH is not set
-# CONFIG_INET_ESP is not set
-# CONFIG_INET_IPCOMP is not set
-# CONFIG_INET_TUNNEL is not set
-CONFIG_IP_TCPDIAG=y
-# CONFIG_IP_TCPDIAG_IPV6 is not set
-
-#
-# IP: Virtual Server Configuration
-#
-# CONFIG_IP_VS is not set
-# CONFIG_IPV6 is not set
-CONFIG_NETFILTER=y
-# CONFIG_NETFILTER_DEBUG is not set
-CONFIG_BRIDGE_NETFILTER=y
-
-#
-# IP: Netfilter Configuration
-#
-CONFIG_IP_NF_CONNTRACK=m
-CONFIG_IP_NF_CT_ACCT=y
-# CONFIG_IP_NF_CONNTRACK_MARK is not set
-# CONFIG_IP_NF_CT_PROTO_SCTP is not set
-CONFIG_IP_NF_FTP=m
-# CONFIG_IP_NF_IRC is not set
-# CONFIG_IP_NF_TFTP is not set
-# CONFIG_IP_NF_AMANDA is not set
-# CONFIG_IP_NF_QUEUE is not set
-CONFIG_IP_NF_IPTABLES=m
-# CONFIG_IP_NF_MATCH_LIMIT is not set
-CONFIG_IP_NF_MATCH_IPRANGE=m
-# CONFIG_IP_NF_MATCH_MAC is not set
-# CONFIG_IP_NF_MATCH_PKTTYPE is not set
-# CONFIG_IP_NF_MATCH_MARK is not set
-# CONFIG_IP_NF_MATCH_MULTIPORT is not set
-# CONFIG_IP_NF_MATCH_TOS is not set
-# CONFIG_IP_NF_MATCH_RECENT is not set
-# CONFIG_IP_NF_MATCH_ECN is not set
-# CONFIG_IP_NF_MATCH_DSCP is not set
-# CONFIG_IP_NF_MATCH_AH_ESP is not set
-# CONFIG_IP_NF_MATCH_LENGTH is not set
-# CONFIG_IP_NF_MATCH_TTL is not set
-# CONFIG_IP_NF_MATCH_TCPMSS is not set
-# CONFIG_IP_NF_MATCH_HELPER is not set
-# CONFIG_IP_NF_MATCH_STATE is not set
-# CONFIG_IP_NF_MATCH_CONNTRACK is not set
-# CONFIG_IP_NF_MATCH_OWNER is not set
-# CONFIG_IP_NF_MATCH_PHYSDEV is not set
-# CONFIG_IP_NF_MATCH_ADDRTYPE is not set
-# CONFIG_IP_NF_MATCH_REALM is not set
-# CONFIG_IP_NF_MATCH_SCTP is not set
-# CONFIG_IP_NF_MATCH_COMMENT is not set
-# CONFIG_IP_NF_MATCH_HASHLIMIT is not set
-CONFIG_IP_NF_FILTER=m
-CONFIG_IP_NF_TARGET_REJECT=m
-# CONFIG_IP_NF_TARGET_LOG is not set
-# CONFIG_IP_NF_TARGET_ULOG is not set
-# CONFIG_IP_NF_TARGET_TCPMSS is not set
-CONFIG_IP_NF_NAT=m
-CONFIG_IP_NF_NAT_NEEDED=y
-CONFIG_IP_NF_TARGET_MASQUERADE=m
-# CONFIG_IP_NF_TARGET_REDIRECT is not set
-# CONFIG_IP_NF_TARGET_NETMAP is not set
-# CONFIG_IP_NF_TARGET_SAME is not set
-# CONFIG_IP_NF_NAT_SNMP_BASIC is not set
-CONFIG_IP_NF_NAT_FTP=m
-# CONFIG_IP_NF_MANGLE is not set
-# CONFIG_IP_NF_RAW is not set
-# CONFIG_IP_NF_ARPTABLES is not set
-
-#
-# Bridge: Netfilter Configuration
-#
-# CONFIG_BRIDGE_NF_EBTABLES is not set
-
-#
-# SCTP Configuration (EXPERIMENTAL)
-#
-# CONFIG_IP_SCTP is not set
-# CONFIG_ATM is not set
-CONFIG_BRIDGE=y
-# CONFIG_VLAN_8021Q is not set
-# CONFIG_DECNET is not set
-# CONFIG_LLC2 is not set
-# CONFIG_IPX is not set
-# CONFIG_ATALK is not set
-# CONFIG_X25 is not set
-# CONFIG_LAPB is not set
-# CONFIG_NET_DIVERT is not set
-# CONFIG_ECONET is not set
-# CONFIG_WAN_ROUTER is not set
-
-#
-# QoS and/or fair queueing
-#
-# CONFIG_NET_SCHED is not set
-# CONFIG_NET_CLS_ROUTE is not set
-
-#
-# Network testing
-#
-# CONFIG_NET_PKTGEN is not set
-# CONFIG_NETPOLL is not set
-# CONFIG_NET_POLL_CONTROLLER is not set
-# CONFIG_HAMRADIO is not set
-# CONFIG_IRDA is not set
-# CONFIG_BT is not set
-CONFIG_NETDEVICES=y
-# CONFIG_DUMMY is not set
-# CONFIG_BONDING is not set
-# CONFIG_EQUALIZER is not set
-CONFIG_TUN=y
-
-#
-# ARCnet devices
-#
-# CONFIG_ARCNET is not set
-
-#
-# Ethernet (10 or 100Mbit)
-#
-CONFIG_NET_ETHERNET=y
-CONFIG_MII=y
-# CONFIG_HAPPYMEAL is not set
-# CONFIG_SUNGEM is not set
-CONFIG_NET_VENDOR_3COM=y
-CONFIG_VORTEX=y
-# CONFIG_TYPHOON is not set
-
-#
-# Tulip family network device support
-#
-CONFIG_NET_TULIP=y
-# CONFIG_DE2104X is not set
-CONFIG_TULIP=y
-# CONFIG_TULIP_MWI is not set
-# CONFIG_TULIP_MMIO is not set
-# CONFIG_TULIP_NAPI is not set
-# CONFIG_DE4X5 is not set
-# CONFIG_WINBOND_840 is not set
-# CONFIG_DM9102 is not set
-# CONFIG_HP100 is not set
-CONFIG_NET_PCI=y
-CONFIG_PCNET32=y
-# CONFIG_AMD8111_ETH is not set
-# CONFIG_ADAPTEC_STARFIRE is not set
-# CONFIG_B44 is not set
-# CONFIG_FORCEDETH is not set
-# CONFIG_DGRS is not set
-# CONFIG_EEPRO100 is not set
-CONFIG_E100=y
-# CONFIG_E100_NAPI is not set
-# CONFIG_FEALNX is not set
-# CONFIG_NATSEMI is not set
-CONFIG_NE2K_PCI=y
-# CONFIG_8139CP is not set
-CONFIG_8139TOO=y
-CONFIG_8139TOO_PIO=y
-# CONFIG_8139TOO_TUNE_TWISTER is not set
-# CONFIG_8139TOO_8129 is not set
-# CONFIG_8139_OLD_RX_RESET is not set
-# CONFIG_SIS900 is not set
-# CONFIG_EPIC100 is not set
-# CONFIG_SUNDANCE is not set
-CONFIG_VIA_RHINE=y
-# CONFIG_VIA_RHINE_MMIO is not set
-
-#
-# Ethernet (1000 Mbit)
-#
-CONFIG_ACENIC=y
-# CONFIG_ACENIC_OMIT_TIGON_I is not set
-# CONFIG_DL2K is not set
-CONFIG_E1000=y
-# CONFIG_E1000_NAPI is not set
-# CONFIG_NS83820 is not set
-# CONFIG_HAMACHI is not set
-# CONFIG_YELLOWFIN is not set
-# CONFIG_R8169 is not set
-# CONFIG_SK98LIN is not set
-# CONFIG_VIA_VELOCITY is not set
-CONFIG_TIGON3=y
-
-#
-# Ethernet (10000 Mbit)
-#
-# CONFIG_IXGB is not set
-# CONFIG_S2IO is not set
-
-#
-# Token Ring devices
-#
-# CONFIG_TR is not set
-
-#
-# Wireless LAN (non-hamradio)
-#
-# CONFIG_NET_RADIO is not set
-
-#
-# Wan interfaces
-#
-# CONFIG_WAN is not set
-# CONFIG_FDDI is not set
-# CONFIG_HIPPI is not set
-# CONFIG_PPP is not set
-# CONFIG_SLIP is not set
-# CONFIG_NET_FC is not set
-# CONFIG_SHAPER is not set
-# CONFIG_NETCONSOLE is not set
-
-#
-# ISDN subsystem
-#
-# CONFIG_ISDN is not set
-
-#
-# Telephony Support
-#
-# CONFIG_PHONE is not set
-
-#
-# Input device support
-#
-CONFIG_INPUT=y
-
-#
-# Userland interfaces
-#
-CONFIG_INPUT_MOUSEDEV=y
-CONFIG_INPUT_MOUSEDEV_PSAUX=y
-CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
-CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
-# CONFIG_INPUT_JOYDEV is not set
-# CONFIG_INPUT_TSDEV is not set
-# CONFIG_INPUT_EVDEV is not set
-# CONFIG_INPUT_EVBUG is not set
-
-#
-# Input I/O drivers
-#
-# CONFIG_GAMEPORT is not set
-CONFIG_SOUND_GAMEPORT=y
-CONFIG_SERIO=y
-CONFIG_SERIO_I8042=y
-CONFIG_SERIO_SERPORT=y
-# CONFIG_SERIO_CT82C710 is not set
-# CONFIG_SERIO_PCIPS2 is not set
-CONFIG_SERIO_LIBPS2=y
-# CONFIG_SERIO_RAW is not set
-
-#
-# Input Device Drivers
-#
-CONFIG_INPUT_KEYBOARD=y
-CONFIG_KEYBOARD_ATKBD=y
-# CONFIG_KEYBOARD_SUNKBD is not set
-# CONFIG_KEYBOARD_LKKBD is not set
-# CONFIG_KEYBOARD_XTKBD is not set
-# CONFIG_KEYBOARD_NEWTON is not set
-CONFIG_INPUT_MOUSE=y
-CONFIG_MOUSE_PS2=y
-# CONFIG_MOUSE_SERIAL is not set
-# CONFIG_MOUSE_VSXXXAA is not set
-# CONFIG_INPUT_JOYSTICK is not set
-# CONFIG_INPUT_TOUCHSCREEN is not set
-# CONFIG_INPUT_MISC is not set
-
-#
-# Character devices
-#
-CONFIG_VT=y
-CONFIG_VT_CONSOLE=y
-CONFIG_HW_CONSOLE=y
-# CONFIG_SERIAL_NONSTANDARD is not set
-
-#
-# Serial drivers
-#
-# CONFIG_SERIAL_8250 is not set
-
-#
-# Non-8250 serial port support
-#
-CONFIG_UNIX98_PTYS=y
-CONFIG_LEGACY_PTYS=y
-CONFIG_LEGACY_PTY_COUNT=256
-
-#
-# IPMI
-#
-# CONFIG_IPMI_HANDLER is not set
-
-#
-# Watchdog Cards
-#
-# CONFIG_WATCHDOG is not set
-# CONFIG_HW_RANDOM is not set
-# CONFIG_NVRAM is not set
-CONFIG_RTC=y
-# CONFIG_GEN_RTC is not set
-# CONFIG_DTLK is not set
-# CONFIG_R3964 is not set
-# CONFIG_APPLICOM is not set
-
-#
-# Ftape, the floppy tape device driver
-#
-# CONFIG_FTAPE is not set
-CONFIG_AGP=m
-CONFIG_AGP_AMD64=m
-CONFIG_AGP_INTEL_MCH=m
-CONFIG_DRM=m
-CONFIG_DRM_TDFX=m
-# CONFIG_DRM_GAMMA is not set
-CONFIG_DRM_R128=m
-CONFIG_DRM_RADEON=m
-CONFIG_DRM_MGA=m
-CONFIG_DRM_SIS=m
-# CONFIG_MWAVE is not set
-# CONFIG_RAW_DRIVER is not set
-# CONFIG_HPET is not set
-# CONFIG_HANGCHECK_TIMER is not set
-
-#
-# I2C support
-#
-# CONFIG_I2C is not set
-
-#
-# Dallas's 1-wire bus
-#
-# CONFIG_W1 is not set
-
-#
-# Misc devices
-#
-# CONFIG_IBM_ASM is not set
-
-#
-# Multimedia devices
-#
-# CONFIG_VIDEO_DEV is not set
-
-#
-# Digital Video Broadcasting Devices
-#
-# CONFIG_DVB is not set
-
-#
-# Graphics support
-#
-# CONFIG_FB is not set
-# CONFIG_VIDEO_SELECT is not set
-
-#
-# Console display driver support
-#
-CONFIG_VGA_CONSOLE=y
-CONFIG_DUMMY_CONSOLE=y
-
-#
-# Sound
-#
-# CONFIG_SOUND is not set
-
-#
-# USB support
-#
-# CONFIG_USB is not set
-CONFIG_USB_ARCH_HAS_HCD=y
-CONFIG_USB_ARCH_HAS_OHCI=y
-
-#
-# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support' may also be needed;
see USB_STORAGE Help for more information
-#
-
-#
-# USB Gadget Support
-#
-# CONFIG_USB_GADGET is not set
-
-#
-# MMC/SD Card support
-#
-# CONFIG_MMC is not set
-
-#
-# InfiniBand support
-#
-# CONFIG_INFINIBAND is not set
-
-#
-# Power management options
-#
-
-#
-# ACPI (Advanced Configuration and Power Interface) Support
-#
-CONFIG_ACPI=y
-CONFIG_ACPI_BOOT=y
-CONFIG_ACPI_INTERPRETER=y
-CONFIG_ACPI_AC=m
-CONFIG_ACPI_BATTERY=m
-CONFIG_ACPI_BUTTON=m
-CONFIG_ACPI_VIDEO=m
-CONFIG_ACPI_FAN=m
-CONFIG_ACPI_PROCESSOR=m
-CONFIG_ACPI_THERMAL=m
-CONFIG_ACPI_ASUS=m
-CONFIG_ACPI_IBM=m
-CONFIG_ACPI_TOSHIBA=m
-CONFIG_ACPI_BLACKLIST_YEAR=0
-# CONFIG_ACPI_DEBUG is not set
-CONFIG_ACPI_BUS=y
-CONFIG_ACPI_EC=y
-CONFIG_ACPI_POWER=y
-CONFIG_ACPI_PCI=y
-CONFIG_ACPI_SYSTEM=y
-# CONFIG_ACPI_CONTAINER is not set
-
-#
-# File systems
-#
-CONFIG_EXT2_FS=y
-# CONFIG_EXT2_FS_XATTR is not set
-CONFIG_EXT3_FS=y
-CONFIG_EXT3_FS_XATTR=y
-# CONFIG_EXT3_FS_POSIX_ACL is not set
-# CONFIG_EXT3_FS_SECURITY is not set
-CONFIG_JBD=y
-# CONFIG_JBD_DEBUG is not set
-CONFIG_FS_MBCACHE=y
-CONFIG_REISERFS_FS=y
-# CONFIG_REISERFS_CHECK is not set
-# CONFIG_REISERFS_PROC_INFO is not set
-# CONFIG_REISERFS_FS_XATTR is not set
-# CONFIG_JFS_FS is not set
-
-#
-# XFS support
-#
-# CONFIG_XFS_FS is not set
-# CONFIG_MINIX_FS is not set
-# CONFIG_ROMFS_FS is not set
-# CONFIG_QUOTA is not set
-CONFIG_DNOTIFY=y
-CONFIG_AUTOFS_FS=y
-CONFIG_AUTOFS4_FS=y
-
-#
-# CD-ROM/DVD Filesystems
-#
-CONFIG_ISO9660_FS=y
-CONFIG_JOLIET=y
-CONFIG_ZISOFS=y
-CONFIG_ZISOFS_FS=y
-# CONFIG_UDF_FS is not set
-
-#
-# DOS/FAT/NT Filesystems
-#
-CONFIG_FAT_FS=y
-CONFIG_MSDOS_FS=y
-CONFIG_VFAT_FS=y
-CONFIG_FAT_DEFAULT_CODEPAGE=437
-CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
-# CONFIG_NTFS_FS is not set
-
-#
-# Pseudo filesystems
-#
-CONFIG_PROC_FS=y
-CONFIG_PROC_KCORE=y
-CONFIG_SYSFS=y
-# CONFIG_DEVFS_FS is not set
-# CONFIG_DEVPTS_FS_XATTR is not set
-CONFIG_TMPFS=y
-# CONFIG_TMPFS_XATTR is not set
-# CONFIG_HUGETLBFS is not set
-# CONFIG_HUGETLB_PAGE is not set
-CONFIG_RAMFS=y
-
-#
-# Miscellaneous filesystems
-#
-# CONFIG_ADFS_FS is not set
-# CONFIG_AFFS_FS is not set
-# CONFIG_HFS_FS is not set
-# CONFIG_HFSPLUS_FS is not set
-# CONFIG_BEFS_FS is not set
-# CONFIG_BFS_FS is not set
-# CONFIG_EFS_FS is not set
-# CONFIG_CRAMFS is not set
-# CONFIG_VXFS_FS is not set
-# CONFIG_HPFS_FS is not set
-# CONFIG_QNX4FS_FS is not set
-# CONFIG_SYSV_FS is not set
-# CONFIG_UFS_FS is not set
-
-#
-# Network File Systems
-#
-CONFIG_NFS_FS=y
-CONFIG_NFS_V3=y
-# CONFIG_NFS_V4 is not set
-# CONFIG_NFS_DIRECTIO is not set
-CONFIG_NFSD=m
-CONFIG_NFSD_V3=y
-# CONFIG_NFSD_V4 is not set
-CONFIG_NFSD_TCP=y
-CONFIG_ROOT_NFS=y
-CONFIG_LOCKD=y
-CONFIG_LOCKD_V4=y
-CONFIG_EXPORTFS=m
-CONFIG_SUNRPC=y
-# CONFIG_RPCSEC_GSS_KRB5 is not set
-# CONFIG_RPCSEC_GSS_SPKM3 is not set
-# CONFIG_SMB_FS is not set
-# CONFIG_CIFS is not set
-# CONFIG_NCP_FS is not set
-# CONFIG_CODA_FS is not set
-# CONFIG_AFS_FS is not set
-
-#
-# Partition Types
-#
-# CONFIG_PARTITION_ADVANCED is not set
-CONFIG_MSDOS_PARTITION=y
-
-#
-# Native Language Support
-#
-CONFIG_NLS=y
-CONFIG_NLS_DEFAULT="iso8859-1"
-CONFIG_NLS_CODEPAGE_437=y
-# CONFIG_NLS_CODEPAGE_737 is not set
-# CONFIG_NLS_CODEPAGE_775 is not set
-# CONFIG_NLS_CODEPAGE_850 is not set
-# CONFIG_NLS_CODEPAGE_852 is not set
-# CONFIG_NLS_CODEPAGE_855 is not set
-# CONFIG_NLS_CODEPAGE_857 is not set
-# CONFIG_NLS_CODEPAGE_860 is not set
-# CONFIG_NLS_CODEPAGE_861 is not set
-# CONFIG_NLS_CODEPAGE_862 is not set
-# CONFIG_NLS_CODEPAGE_863 is not set
-# CONFIG_NLS_CODEPAGE_864 is not set
-# CONFIG_NLS_CODEPAGE_865 is not set
-# CONFIG_NLS_CODEPAGE_866 is not set
-# CONFIG_NLS_CODEPAGE_869 is not set
-# CONFIG_NLS_CODEPAGE_936 is not set
-# CONFIG_NLS_CODEPAGE_950 is not set
-# CONFIG_NLS_CODEPAGE_932 is not set
-# CONFIG_NLS_CODEPAGE_949 is not set
-# CONFIG_NLS_CODEPAGE_874 is not set
-# CONFIG_NLS_ISO8859_8 is not set
-# CONFIG_NLS_CODEPAGE_1250 is not set
-# CONFIG_NLS_CODEPAGE_1251 is not set
-# CONFIG_NLS_ASCII is not set
-CONFIG_NLS_ISO8859_1=y
-# CONFIG_NLS_ISO8859_2 is not set
-# CONFIG_NLS_ISO8859_3 is not set
-# CONFIG_NLS_ISO8859_4 is not set
-# CONFIG_NLS_ISO8859_5 is not set
-# CONFIG_NLS_ISO8859_6 is not set
-# CONFIG_NLS_ISO8859_7 is not set
-# CONFIG_NLS_ISO8859_9 is not set
-# CONFIG_NLS_ISO8859_13 is not set
-# CONFIG_NLS_ISO8859_14 is not set
-# CONFIG_NLS_ISO8859_15 is not set
-# CONFIG_NLS_KOI8_R is not set
-# CONFIG_NLS_KOI8_U is not set
-# CONFIG_NLS_UTF8 is not set
-
-#
-# Security options
-#
-# CONFIG_KEYS is not set
-# CONFIG_SECURITY is not set
-
-#
-# Cryptographic options
-#
-CONFIG_CRYPTO=y
-CONFIG_CRYPTO_HMAC=y
-# CONFIG_CRYPTO_NULL is not set
-# CONFIG_CRYPTO_MD4 is not set
-CONFIG_CRYPTO_MD5=m
-CONFIG_CRYPTO_SHA1=m
-# CONFIG_CRYPTO_SHA256 is not set
-# CONFIG_CRYPTO_SHA512 is not set
-# CONFIG_CRYPTO_WP512 is not set
-CONFIG_CRYPTO_DES=m
-# CONFIG_CRYPTO_BLOWFISH is not set
-# CONFIG_CRYPTO_TWOFISH is not set
-# CONFIG_CRYPTO_SERPENT is not set
-# CONFIG_CRYPTO_AES is not set
-# CONFIG_CRYPTO_CAST5 is not set
-# CONFIG_CRYPTO_CAST6 is not set
-# CONFIG_CRYPTO_TEA is not set
-# CONFIG_CRYPTO_ARC4 is not set
-# CONFIG_CRYPTO_KHAZAD is not set
-# CONFIG_CRYPTO_ANUBIS is not set
-# CONFIG_CRYPTO_DEFLATE is not set
-# CONFIG_CRYPTO_MICHAEL_MIC is not set
-CONFIG_CRYPTO_CRC32C=m
-# CONFIG_CRYPTO_TEST is not set
-
-#
-# Hardware crypto devices
-#
-
-#
-# Library routines
-#
-# CONFIG_CRC_CCITT is not set
-CONFIG_CRC32=y
-CONFIG_LIBCRC32C=y
-CONFIG_ZLIB_INFLATE=y
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/configs/xenU_defconfig_x86_64
--- a/linux-2.6.11-xen-sparse/arch/xen/configs/xenU_defconfig_x86_64 Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,897 +0,0 @@
-#
-# Automatically generated make config: don't edit
-# Linux kernel version: 2.6.11.10-xenU
-# Mon May 23 15:07:58 2005
-#
-CONFIG_XEN=y
-CONFIG_ARCH_XEN=y
-CONFIG_NO_IDLE_HZ=y
-
-#
-# XEN
-#
-# CONFIG_XEN_PRIVILEGED_GUEST is not set
-# CONFIG_XEN_PHYSDEV_ACCESS is not set
-CONFIG_XEN_BLKDEV_GRANT=y
-CONFIG_XEN_BLKDEV_FRONTEND=y
-CONFIG_XEN_NETDEV_FRONTEND=y
-# CONFIG_XEN_NETDEV_FRONTEND_PIPELINED_TRANSMITTER is not set
-# CONFIG_XEN_BLKDEV_TAP is not set
-# CONFIG_XEN_SHADOW_MODE is not set
-CONFIG_XEN_SCRUB_PAGES=y
-# CONFIG_XEN_X86 is not set
-CONFIG_XEN_X86_64=y
-CONFIG_HAVE_ARCH_DEV_ALLOC_SKB=y
-
-#
-# Code maturity level options
-#
-CONFIG_EXPERIMENTAL=y
-CONFIG_CLEAN_COMPILE=y
-CONFIG_BROKEN_ON_SMP=y
-
-#
-# General setup
-#
-CONFIG_LOCALVERSION=""
-CONFIG_SWAP=y
-CONFIG_SYSVIPC=y
-CONFIG_POSIX_MQUEUE=y
-CONFIG_BSD_PROCESS_ACCT=y
-# CONFIG_BSD_PROCESS_ACCT_V3 is not set
-CONFIG_SYSCTL=y
-CONFIG_AUDIT=y
-CONFIG_AUDITSYSCALL=y
-CONFIG_LOG_BUF_SHIFT=14
-CONFIG_HOTPLUG=y
-CONFIG_KOBJECT_UEVENT=y
-# CONFIG_IKCONFIG is not set
-# CONFIG_EMBEDDED is not set
-CONFIG_KALLSYMS=y
-CONFIG_KALLSYMS_EXTRA_PASS=y
-CONFIG_FUTEX=y
-CONFIG_EPOLL=y
-# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
-CONFIG_SHMEM=y
-CONFIG_CC_ALIGN_FUNCTIONS=0
-CONFIG_CC_ALIGN_LABELS=0
-CONFIG_CC_ALIGN_LOOPS=0
-CONFIG_CC_ALIGN_JUMPS=0
-# CONFIG_TINY_SHMEM is not set
-
-#
-# Loadable module support
-#
-CONFIG_MODULES=y
-CONFIG_MODULE_UNLOAD=y
-# CONFIG_MODULE_FORCE_UNLOAD is not set
-CONFIG_OBSOLETE_MODPARM=y
-CONFIG_MODVERSIONS=y
-# CONFIG_MODULE_SRCVERSION_ALL is not set
-CONFIG_KMOD=y
-CONFIG_XENARCH="x86_64"
-CONFIG_X86=y
-CONFIG_MMU=y
-CONFIG_GENERIC_ISA_DMA=y
-CONFIG_GENERIC_IOMAP=y
-CONFIG_X86_CMPXCHG=y
-CONFIG_X86_L1_CACHE_SHIFT=7
-CONFIG_RWSEM_GENERIC_SPINLOCK=y
-CONFIG_GENERIC_CALIBRATE_DELAY=y
-CONFIG_X86_GOOD_APIC=y
-# CONFIG_HPET_TIMER is not set
-# CONFIG_SMP is not set
-# CONFIG_PREEMPT is not set
-# CONFIG_MICROCODE is not set
-CONFIG_X86_CPUID=y
-# CONFIG_NUMA is not set
-# CONFIG_MTRR is not set
-# CONFIG_X86_LOCAL_APIC is not set
-# CONFIG_X86_IO_APIC is not set
-# CONFIG_PCI is not set
-CONFIG_EARLY_PRINTK=y
-CONFIG_GENERIC_HARDIRQS=y
-CONFIG_GENERIC_IRQ_PROBE=y
-
-#
-# X86_64 processor configuration
-#
-CONFIG_X86_64=y
-CONFIG_64BIT=y
-
-#
-# Processor type and features
-#
-CONFIG_MPSC=y
-# CONFIG_GENERIC_CPU is not set
-CONFIG_X86_L1_CACHE_BYTES=128
-# CONFIG_X86_TSC is not set
-# CONFIG_X86_MSR is not set
-CONFIG_DUMMY_IOMMU=y
-# CONFIG_X86_MCE is not set
-
-#
-# Power management options
-#
-# CONFIG_PM is not set
-
-#
-# CPU Frequency scaling
-#
-# CONFIG_CPU_FREQ is not set
-
-#
-# Bus options (PCI etc.)
-#
-# CONFIG_UNORDERED_IO is not set
-
-#
-# Executable file formats / Emulations
-#
-CONFIG_IA32_EMULATION=y
-# CONFIG_IA32_AOUT is not set
-#
-# Executable file formats
-#
-CONFIG_BINFMT_ELF=y
-CONFIG_BINFMT_MISC=y
-
-#
-# Device Drivers
-#
-
-#
-# Generic Driver Options
-#
-CONFIG_STANDALONE=y
-CONFIG_PREVENT_FIRMWARE_BUILD=y
-CONFIG_FW_LOADER=y
-
-#
-# Block devices
-#
-CONFIG_BLK_DEV_FD=m
-# CONFIG_BLK_DEV_COW_COMMON is not set
-CONFIG_BLK_DEV_LOOP=m
-CONFIG_BLK_DEV_CRYPTOLOOP=m
-CONFIG_BLK_DEV_NBD=m
-CONFIG_BLK_DEV_RAM=y
-CONFIG_BLK_DEV_RAM_COUNT=16
-CONFIG_BLK_DEV_RAM_SIZE=16384
-CONFIG_BLK_DEV_INITRD=y
-CONFIG_INITRAMFS_SOURCE=""
-CONFIG_LBD=y
-# CONFIG_CDROM_PKTCDVD is not set
-
-#
-# IO Schedulers
-#
-CONFIG_IOSCHED_NOOP=y
-CONFIG_IOSCHED_AS=y
-CONFIG_IOSCHED_DEADLINE=y
-CONFIG_IOSCHED_CFQ=y
-# CONFIG_ATA_OVER_ETH is not set
-
-#
-# SCSI device support
-#
-CONFIG_SCSI=m
-CONFIG_SCSI_PROC_FS=y
-
-#
-# SCSI support type (disk, tape, CD-ROM)
-#
-CONFIG_BLK_DEV_SD=m
-CONFIG_CHR_DEV_ST=m
-CONFIG_CHR_DEV_OSST=m
-CONFIG_BLK_DEV_SR=m
-CONFIG_BLK_DEV_SR_VENDOR=y
-CONFIG_CHR_DEV_SG=m
-
-#
-# Some SCSI devices (e.g. CD jukebox) support multiple LUNs
-#
-# CONFIG_SCSI_MULTI_LUN is not set
-CONFIG_SCSI_CONSTANTS=y
-CONFIG_SCSI_LOGGING=y
-
-#
-# SCSI Transport Attributes
-#
-CONFIG_SCSI_SPI_ATTRS=m
-CONFIG_SCSI_FC_ATTRS=m
-# CONFIG_SCSI_ISCSI_ATTRS is not set
-
-#
-# SCSI low-level drivers
-#
-CONFIG_SCSI_SATA=y
-# CONFIG_SCSI_DEBUG is not set
-
-#
-# Multi-device support (RAID and LVM)
-#
-CONFIG_MD=y
-CONFIG_BLK_DEV_MD=y
-CONFIG_MD_LINEAR=m
-CONFIG_MD_RAID0=m
-CONFIG_MD_RAID1=m
-CONFIG_MD_RAID10=m
-CONFIG_MD_RAID5=m
-CONFIG_MD_RAID6=m
-CONFIG_MD_MULTIPATH=m
-# CONFIG_MD_FAULTY is not set
-CONFIG_BLK_DEV_DM=m
-CONFIG_DM_CRYPT=m
-CONFIG_DM_SNAPSHOT=m
-CONFIG_DM_MIRROR=m
-CONFIG_DM_ZERO=m
-
-#
-# Networking support
-#
-CONFIG_NET=y
-
-#
-# Networking options
-#
-CONFIG_PACKET=y
-CONFIG_PACKET_MMAP=y
-CONFIG_NETLINK_DEV=y
-CONFIG_UNIX=y
-CONFIG_NET_KEY=m
-CONFIG_INET=y
-CONFIG_IP_MULTICAST=y
-CONFIG_IP_ADVANCED_ROUTER=y
-CONFIG_IP_MULTIPLE_TABLES=y
-CONFIG_IP_ROUTE_FWMARK=y
-CONFIG_IP_ROUTE_MULTIPATH=y
-CONFIG_IP_ROUTE_VERBOSE=y
-# CONFIG_IP_PNP is not set
-CONFIG_NET_IPIP=m
-CONFIG_NET_IPGRE=m
-CONFIG_NET_IPGRE_BROADCAST=y
-CONFIG_IP_MROUTE=y
-CONFIG_IP_PIMSM_V1=y
-CONFIG_IP_PIMSM_V2=y
-# CONFIG_ARPD is not set
-CONFIG_SYN_COOKIES=y
-CONFIG_INET_AH=m
-CONFIG_INET_ESP=m
-CONFIG_INET_IPCOMP=m
-CONFIG_INET_TUNNEL=m
-CONFIG_IP_TCPDIAG=y
-# CONFIG_IP_TCPDIAG_IPV6 is not set
-
-#
-# IP: Virtual Server Configuration
-#
-CONFIG_IP_VS=m
-# CONFIG_IP_VS_DEBUG is not set
-CONFIG_IP_VS_TAB_BITS=12
-
-#
-# IPVS transport protocol load balancing support
-#
-CONFIG_IP_VS_PROTO_TCP=y
-CONFIG_IP_VS_PROTO_UDP=y
-CONFIG_IP_VS_PROTO_ESP=y
-CONFIG_IP_VS_PROTO_AH=y
-
-#
-# IPVS scheduler
-#
-CONFIG_IP_VS_RR=m
-CONFIG_IP_VS_WRR=m
-CONFIG_IP_VS_LC=m
-CONFIG_IP_VS_WLC=m
-CONFIG_IP_VS_LBLC=m
-CONFIG_IP_VS_LBLCR=m
-CONFIG_IP_VS_DH=m
-CONFIG_IP_VS_SH=m
-CONFIG_IP_VS_SED=m
-CONFIG_IP_VS_NQ=m
-
-#
-# IPVS application helper
-#
-CONFIG_IP_VS_FTP=m
-CONFIG_IPV6=m
-CONFIG_IPV6_PRIVACY=y
-CONFIG_INET6_AH=m
-CONFIG_INET6_ESP=m
-CONFIG_INET6_IPCOMP=m
-CONFIG_INET6_TUNNEL=m
-CONFIG_IPV6_TUNNEL=m
-CONFIG_NETFILTER=y
-# CONFIG_NETFILTER_DEBUG is not set
-CONFIG_BRIDGE_NETFILTER=y
-
-#
-# IP: Netfilter Configuration
-#
-CONFIG_IP_NF_CONNTRACK=m
-CONFIG_IP_NF_CT_ACCT=y
-# CONFIG_IP_NF_CONNTRACK_MARK is not set
-CONFIG_IP_NF_CT_PROTO_SCTP=m
-CONFIG_IP_NF_FTP=m
-CONFIG_IP_NF_IRC=m
-CONFIG_IP_NF_TFTP=m
-CONFIG_IP_NF_AMANDA=m
-CONFIG_IP_NF_QUEUE=m
-CONFIG_IP_NF_IPTABLES=m
-CONFIG_IP_NF_MATCH_LIMIT=m
-CONFIG_IP_NF_MATCH_IPRANGE=m
-CONFIG_IP_NF_MATCH_MAC=m
-CONFIG_IP_NF_MATCH_PKTTYPE=m
-CONFIG_IP_NF_MATCH_MARK=m
-CONFIG_IP_NF_MATCH_MULTIPORT=m
-CONFIG_IP_NF_MATCH_TOS=m
-CONFIG_IP_NF_MATCH_RECENT=m
-CONFIG_IP_NF_MATCH_ECN=m
-CONFIG_IP_NF_MATCH_DSCP=m
-CONFIG_IP_NF_MATCH_AH_ESP=m
-CONFIG_IP_NF_MATCH_LENGTH=m
-CONFIG_IP_NF_MATCH_TTL=m
-CONFIG_IP_NF_MATCH_TCPMSS=m
-CONFIG_IP_NF_MATCH_HELPER=m
-CONFIG_IP_NF_MATCH_STATE=m
-CONFIG_IP_NF_MATCH_CONNTRACK=m
-CONFIG_IP_NF_MATCH_OWNER=m
-CONFIG_IP_NF_MATCH_PHYSDEV=m
-CONFIG_IP_NF_MATCH_ADDRTYPE=m
-CONFIG_IP_NF_MATCH_REALM=m
-CONFIG_IP_NF_MATCH_SCTP=m
-CONFIG_IP_NF_MATCH_COMMENT=m
-# CONFIG_IP_NF_MATCH_HASHLIMIT is not set
-CONFIG_IP_NF_FILTER=m
-CONFIG_IP_NF_TARGET_REJECT=m
-CONFIG_IP_NF_TARGET_LOG=m
-CONFIG_IP_NF_TARGET_ULOG=m
-CONFIG_IP_NF_TARGET_TCPMSS=m
-CONFIG_IP_NF_NAT=m
-CONFIG_IP_NF_NAT_NEEDED=y
-CONFIG_IP_NF_TARGET_MASQUERADE=m
-CONFIG_IP_NF_TARGET_REDIRECT=m
-CONFIG_IP_NF_TARGET_NETMAP=m
-CONFIG_IP_NF_TARGET_SAME=m
-CONFIG_IP_NF_NAT_SNMP_BASIC=m
-CONFIG_IP_NF_NAT_IRC=m
-CONFIG_IP_NF_NAT_FTP=m
-CONFIG_IP_NF_NAT_TFTP=m
-CONFIG_IP_NF_NAT_AMANDA=m
-CONFIG_IP_NF_MANGLE=m
-CONFIG_IP_NF_TARGET_TOS=m
-CONFIG_IP_NF_TARGET_ECN=m
-CONFIG_IP_NF_TARGET_DSCP=m
-CONFIG_IP_NF_TARGET_MARK=m
-CONFIG_IP_NF_TARGET_CLASSIFY=m
-CONFIG_IP_NF_RAW=m
-CONFIG_IP_NF_TARGET_NOTRACK=m
-CONFIG_IP_NF_ARPTABLES=m
-CONFIG_IP_NF_ARPFILTER=m
-CONFIG_IP_NF_ARP_MANGLE=m
-
-#
-# IPv6: Netfilter Configuration
-#
-# CONFIG_IP6_NF_QUEUE is not set
-CONFIG_IP6_NF_IPTABLES=m
-CONFIG_IP6_NF_MATCH_LIMIT=m
-CONFIG_IP6_NF_MATCH_MAC=m
-CONFIG_IP6_NF_MATCH_RT=m
-CONFIG_IP6_NF_MATCH_OPTS=m
-CONFIG_IP6_NF_MATCH_FRAG=m
-CONFIG_IP6_NF_MATCH_HL=m
-CONFIG_IP6_NF_MATCH_MULTIPORT=m
-CONFIG_IP6_NF_MATCH_OWNER=m
-CONFIG_IP6_NF_MATCH_MARK=m
-CONFIG_IP6_NF_MATCH_IPV6HEADER=m
-CONFIG_IP6_NF_MATCH_AHESP=m
-CONFIG_IP6_NF_MATCH_LENGTH=m
-CONFIG_IP6_NF_MATCH_EUI64=m
-CONFIG_IP6_NF_MATCH_PHYSDEV=m
-CONFIG_IP6_NF_FILTER=m
-CONFIG_IP6_NF_TARGET_LOG=m
-CONFIG_IP6_NF_MANGLE=m
-CONFIG_IP6_NF_TARGET_MARK=m
-CONFIG_IP6_NF_RAW=m
-
-#
-# Bridge: Netfilter Configuration
-#
-CONFIG_BRIDGE_NF_EBTABLES=m
-CONFIG_BRIDGE_EBT_BROUTE=m
-CONFIG_BRIDGE_EBT_T_FILTER=m
-CONFIG_BRIDGE_EBT_T_NAT=m
-CONFIG_BRIDGE_EBT_802_3=m
-CONFIG_BRIDGE_EBT_AMONG=m
-CONFIG_BRIDGE_EBT_ARP=m
-CONFIG_BRIDGE_EBT_IP=m
-CONFIG_BRIDGE_EBT_LIMIT=m
-CONFIG_BRIDGE_EBT_MARK=m
-CONFIG_BRIDGE_EBT_PKTTYPE=m
-CONFIG_BRIDGE_EBT_STP=m
-CONFIG_BRIDGE_EBT_VLAN=m
-CONFIG_BRIDGE_EBT_ARPREPLY=m
-CONFIG_BRIDGE_EBT_DNAT=m
-CONFIG_BRIDGE_EBT_MARK_T=m
-CONFIG_BRIDGE_EBT_REDIRECT=m
-CONFIG_BRIDGE_EBT_SNAT=m
-CONFIG_BRIDGE_EBT_LOG=m
-# CONFIG_BRIDGE_EBT_ULOG is not set
-CONFIG_XFRM=y
-CONFIG_XFRM_USER=y
-
-#
-# SCTP Configuration (EXPERIMENTAL)
-#
-CONFIG_IP_SCTP=m
-# CONFIG_SCTP_DBG_MSG is not set
-# CONFIG_SCTP_DBG_OBJCNT is not set
-# CONFIG_SCTP_HMAC_NONE is not set
-# CONFIG_SCTP_HMAC_SHA1 is not set
-CONFIG_SCTP_HMAC_MD5=y
-CONFIG_ATM=m
-CONFIG_ATM_CLIP=m
-# CONFIG_ATM_CLIP_NO_ICMP is not set
-CONFIG_ATM_LANE=m
-# CONFIG_ATM_MPOA is not set
-CONFIG_ATM_BR2684=m
-# CONFIG_ATM_BR2684_IPFILTER is not set
-CONFIG_BRIDGE=m
-CONFIG_VLAN_8021Q=m
-# CONFIG_DECNET is not set
-CONFIG_LLC=m
-# CONFIG_LLC2 is not set
-CONFIG_IPX=m
-# CONFIG_IPX_INTERN is not set
-CONFIG_ATALK=m
-CONFIG_DEV_APPLETALK=y
-CONFIG_IPDDP=m
-CONFIG_IPDDP_ENCAP=y
-CONFIG_IPDDP_DECAP=y
-# CONFIG_X25 is not set
-# CONFIG_LAPB is not set
-CONFIG_NET_DIVERT=y
-# CONFIG_ECONET is not set
-CONFIG_WAN_ROUTER=m
-
-#
-# QoS and/or fair queueing
-#
-CONFIG_NET_SCHED=y
-CONFIG_NET_SCH_CLK_JIFFIES=y
-# CONFIG_NET_SCH_CLK_GETTIMEOFDAY is not set
-# CONFIG_NET_SCH_CLK_CPU is not set
-CONFIG_NET_SCH_CBQ=m
-CONFIG_NET_SCH_HTB=m
-CONFIG_NET_SCH_HFSC=m
-CONFIG_NET_SCH_ATM=m
-CONFIG_NET_SCH_PRIO=m
-CONFIG_NET_SCH_RED=m
-CONFIG_NET_SCH_SFQ=m
-CONFIG_NET_SCH_TEQL=m
-CONFIG_NET_SCH_TBF=m
-CONFIG_NET_SCH_GRED=m
-CONFIG_NET_SCH_DSMARK=m
-CONFIG_NET_SCH_NETEM=m
-CONFIG_NET_SCH_INGRESS=m
-CONFIG_NET_QOS=y
-CONFIG_NET_ESTIMATOR=y
-CONFIG_NET_CLS=y
-CONFIG_NET_CLS_TCINDEX=m
-CONFIG_NET_CLS_ROUTE4=m
-CONFIG_NET_CLS_ROUTE=y
-CONFIG_NET_CLS_FW=m
-CONFIG_NET_CLS_U32=m
-CONFIG_CLS_U32_PERF=y
-CONFIG_NET_CLS_IND=y
-# CONFIG_CLS_U32_MARK is not set
-CONFIG_NET_CLS_RSVP=m
-CONFIG_NET_CLS_RSVP6=m
-# CONFIG_NET_CLS_ACT is not set
-CONFIG_NET_CLS_POLICE=y
-
-#
-# Network testing
-#
-# CONFIG_NET_PKTGEN is not set
-CONFIG_NETPOLL=y
-# CONFIG_NETPOLL_RX is not set
-CONFIG_NETPOLL_TRAP=y
-CONFIG_NET_POLL_CONTROLLER=y
-# CONFIG_HAMRADIO is not set
-CONFIG_IRDA=m
-
-#
-# IrDA protocols
-#
-CONFIG_IRLAN=m
-CONFIG_IRNET=m
-CONFIG_IRCOMM=m
-# CONFIG_IRDA_ULTRA is not set
-
-#
-# IrDA options
-#
-CONFIG_IRDA_CACHE_LAST_LSAP=y
-CONFIG_IRDA_FAST_RR=y
-# CONFIG_IRDA_DEBUG is not set
-
-#
-# Infrared-port device drivers
-#
-
-#
-# SIR device drivers
-#
-CONFIG_IRTTY_SIR=m
-
-#
-# Dongle support
-#
-CONFIG_DONGLE=y
-CONFIG_ESI_DONGLE=m
-CONFIG_ACTISYS_DONGLE=m
-CONFIG_TEKRAM_DONGLE=m
-CONFIG_LITELINK_DONGLE=m
-CONFIG_MA600_DONGLE=m
-CONFIG_GIRBIL_DONGLE=m
-CONFIG_MCP2120_DONGLE=m
-CONFIG_OLD_BELKIN_DONGLE=m
-CONFIG_ACT200L_DONGLE=m
-
-#
-# Old SIR device drivers
-#
-# CONFIG_IRPORT_SIR is not set
-
-#
-# Old Serial dongle support
-#
-
-#
-# FIR device drivers
-#
-CONFIG_BT=m
-CONFIG_BT_L2CAP=m
-CONFIG_BT_SCO=m
-CONFIG_BT_RFCOMM=m
-CONFIG_BT_RFCOMM_TTY=y
-CONFIG_BT_BNEP=m
-CONFIG_BT_BNEP_MC_FILTER=y
-CONFIG_BT_BNEP_PROTO_FILTER=y
-CONFIG_BT_HIDP=m
-
-#
-# Bluetooth device drivers
-#
-CONFIG_BT_HCIUART=m
-CONFIG_BT_HCIUART_H4=y
-CONFIG_BT_HCIUART_BCSP=y
-CONFIG_BT_HCIUART_BCSP_TXCRC=y
-CONFIG_BT_HCIVHCI=m
-CONFIG_NETDEVICES=y
-CONFIG_DUMMY=m
-CONFIG_BONDING=m
-CONFIG_EQUALIZER=m
-CONFIG_TUN=m
-CONFIG_ETHERTAP=m
-
-#
-# Ethernet (10 or 100Mbit)
-#
-CONFIG_NET_ETHERNET=y
-CONFIG_MII=m
-
-#
-# Ethernet (1000 Mbit)
-#
-
-#
-# Ethernet (10000 Mbit)
-#
-
-#
-# Token Ring devices
-#
-
-#
-# Wireless LAN (non-hamradio)
-#
-CONFIG_NET_RADIO=y
-
-#
-# Obsolete Wireless cards support (pre-802.11)
-#
-# CONFIG_STRIP is not set
-CONFIG_ATMEL=m
-
-#
-# Wan interfaces
-#
-# CONFIG_WAN is not set
-
-#
-# ATM drivers
-#
-CONFIG_ATM_TCP=m
-CONFIG_PPP=m
-CONFIG_PPP_MULTILINK=y
-CONFIG_PPP_FILTER=y
-CONFIG_PPP_ASYNC=m
-CONFIG_PPP_SYNC_TTY=m
-CONFIG_PPP_DEFLATE=m
-# CONFIG_PPP_BSDCOMP is not set
-CONFIG_PPPOE=m
-CONFIG_PPPOATM=m
-# CONFIG_SLIP is not set
-# CONFIG_SHAPER is not set
-CONFIG_NETCONSOLE=m
-CONFIG_INPUT=m
-CONFIG_UNIX98_PTYS=y
-# CONFIG_LEGACY_PTYS is not set
-
-#
-# Character devices
-#
-
-#
-# File systems
-#
-CONFIG_EXT2_FS=y
-CONFIG_EXT2_FS_XATTR=y
-CONFIG_EXT2_FS_POSIX_ACL=y
-CONFIG_EXT2_FS_SECURITY=y
-CONFIG_EXT3_FS=m
-CONFIG_EXT3_FS_XATTR=y
-CONFIG_EXT3_FS_POSIX_ACL=y
-CONFIG_EXT3_FS_SECURITY=y
-CONFIG_JBD=m
-# CONFIG_JBD_DEBUG is not set
-CONFIG_FS_MBCACHE=y
-CONFIG_REISERFS_FS=m
-# CONFIG_REISERFS_CHECK is not set
-CONFIG_REISERFS_PROC_INFO=y
-CONFIG_REISERFS_FS_XATTR=y
-CONFIG_REISERFS_FS_POSIX_ACL=y
-CONFIG_REISERFS_FS_SECURITY=y
-CONFIG_JFS_FS=m
-CONFIG_JFS_POSIX_ACL=y
-# CONFIG_JFS_SECURITY is not set
-# CONFIG_JFS_DEBUG is not set
-# CONFIG_JFS_STATISTICS is not set
-CONFIG_FS_POSIX_ACL=y
-
-#
-# XFS support
-#
-CONFIG_XFS_FS=m
-CONFIG_XFS_EXPORT=y
-# CONFIG_XFS_RT is not set
-CONFIG_XFS_QUOTA=y
-CONFIG_XFS_SECURITY=y
-CONFIG_XFS_POSIX_ACL=y
-CONFIG_MINIX_FS=m
-CONFIG_ROMFS_FS=m
-CONFIG_QUOTA=y
-# CONFIG_QFMT_V1 is not set
-CONFIG_QFMT_V2=y
-CONFIG_QUOTACTL=y
-CONFIG_DNOTIFY=y
-CONFIG_AUTOFS_FS=m
-CONFIG_AUTOFS4_FS=m
-
-#
-# CD-ROM/DVD Filesystems
-#
-CONFIG_ISO9660_FS=y
-CONFIG_JOLIET=y
-CONFIG_ZISOFS=y
-CONFIG_ZISOFS_FS=y
-CONFIG_UDF_FS=m
-CONFIG_UDF_NLS=y
-
-#
-# DOS/FAT/NT Filesystems
-#
-CONFIG_FAT_FS=m
-CONFIG_MSDOS_FS=m
-CONFIG_VFAT_FS=m
-CONFIG_FAT_DEFAULT_CODEPAGE=437
-CONFIG_FAT_DEFAULT_IOCHARSET="ascii"
-# CONFIG_NTFS_FS is not set
-
-#
-# Pseudo filesystems
-#
-CONFIG_PROC_FS=y
-CONFIG_PROC_KCORE=y
-CONFIG_SYSFS=y
-# CONFIG_DEVFS_FS is not set
-CONFIG_DEVPTS_FS_XATTR=y
-CONFIG_DEVPTS_FS_SECURITY=y
-CONFIG_TMPFS=y
-CONFIG_TMPFS_XATTR=y
-CONFIG_TMPFS_SECURITY=y
-# CONFIG_HUGETLBFS is not set
-# CONFIG_HUGETLB_PAGE is not set
-CONFIG_RAMFS=y
-
-#
-# Miscellaneous filesystems
-#
-# CONFIG_ADFS_FS is not set
-CONFIG_AFFS_FS=m
-CONFIG_HFS_FS=m
-CONFIG_HFSPLUS_FS=m
-CONFIG_BEFS_FS=m
-# CONFIG_BEFS_DEBUG is not set
-CONFIG_BFS_FS=m
-CONFIG_EFS_FS=m
-CONFIG_CRAMFS=m
-CONFIG_VXFS_FS=m
-# CONFIG_HPFS_FS is not set
-CONFIG_QNX4FS_FS=m
-CONFIG_SYSV_FS=m
-CONFIG_UFS_FS=m
-# CONFIG_UFS_FS_WRITE is not set
-
-#
-# Network File Systems
-#
-CONFIG_NFS_FS=m
-CONFIG_NFS_V3=y
-CONFIG_NFS_V4=y
-CONFIG_NFS_DIRECTIO=y
-CONFIG_NFSD=m
-CONFIG_NFSD_V3=y
-CONFIG_NFSD_V4=y
-CONFIG_NFSD_TCP=y
-CONFIG_LOCKD=m
-CONFIG_LOCKD_V4=y
-CONFIG_EXPORTFS=m
-CONFIG_SUNRPC=m
-CONFIG_SUNRPC_GSS=m
-CONFIG_RPCSEC_GSS_KRB5=m
-CONFIG_RPCSEC_GSS_SPKM3=m
-CONFIG_SMB_FS=m
-# CONFIG_SMB_NLS_DEFAULT is not set
-CONFIG_CIFS=m
-# CONFIG_CIFS_STATS is not set
-CONFIG_CIFS_XATTR=y
-CONFIG_CIFS_POSIX=y
-# CONFIG_CIFS_EXPERIMENTAL is not set
-CONFIG_NCP_FS=m
-CONFIG_NCPFS_PACKET_SIGNING=y
-CONFIG_NCPFS_IOCTL_LOCKING=y
-CONFIG_NCPFS_STRONG=y
-CONFIG_NCPFS_NFS_NS=y
-CONFIG_NCPFS_OS2_NS=y
-CONFIG_NCPFS_SMALLDOS=y
-CONFIG_NCPFS_NLS=y
-CONFIG_NCPFS_EXTRAS=y
-# CONFIG_CODA_FS is not set
-# CONFIG_AFS_FS is not set
-
-#
-# Partition Types
-#
-CONFIG_PARTITION_ADVANCED=y
-# CONFIG_ACORN_PARTITION is not set
-CONFIG_OSF_PARTITION=y
-# CONFIG_AMIGA_PARTITION is not set
-# CONFIG_ATARI_PARTITION is not set
-CONFIG_MAC_PARTITION=y
-CONFIG_MSDOS_PARTITION=y
-CONFIG_BSD_DISKLABEL=y
-CONFIG_MINIX_SUBPARTITION=y
-CONFIG_SOLARIS_X86_PARTITION=y
-CONFIG_UNIXWARE_DISKLABEL=y
-# CONFIG_LDM_PARTITION is not set
-CONFIG_SGI_PARTITION=y
-# CONFIG_ULTRIX_PARTITION is not set
-CONFIG_SUN_PARTITION=y
-CONFIG_EFI_PARTITION=y
-
-#
-# Native Language Support
-#
-CONFIG_NLS=y
-CONFIG_NLS_DEFAULT="utf8"
-CONFIG_NLS_CODEPAGE_437=y
-CONFIG_NLS_CODEPAGE_737=m
-CONFIG_NLS_CODEPAGE_775=m
-CONFIG_NLS_CODEPAGE_850=m
-CONFIG_NLS_CODEPAGE_852=m
-CONFIG_NLS_CODEPAGE_855=m
-CONFIG_NLS_CODEPAGE_857=m
-CONFIG_NLS_CODEPAGE_860=m
-CONFIG_NLS_CODEPAGE_861=m
-CONFIG_NLS_CODEPAGE_862=m
-CONFIG_NLS_CODEPAGE_863=m
-CONFIG_NLS_CODEPAGE_864=m
-CONFIG_NLS_CODEPAGE_865=m
-CONFIG_NLS_CODEPAGE_866=m
-CONFIG_NLS_CODEPAGE_869=m
-CONFIG_NLS_CODEPAGE_936=m
-CONFIG_NLS_CODEPAGE_950=m
-CONFIG_NLS_CODEPAGE_932=m
-CONFIG_NLS_CODEPAGE_949=m
-CONFIG_NLS_CODEPAGE_874=m
-CONFIG_NLS_ISO8859_8=m
-CONFIG_NLS_CODEPAGE_1250=m
-CONFIG_NLS_CODEPAGE_1251=m
-CONFIG_NLS_ASCII=y
-CONFIG_NLS_ISO8859_1=m
-CONFIG_NLS_ISO8859_2=m
-CONFIG_NLS_ISO8859_3=m
-CONFIG_NLS_ISO8859_4=m
-CONFIG_NLS_ISO8859_5=m
-CONFIG_NLS_ISO8859_6=m
-CONFIG_NLS_ISO8859_7=m
-CONFIG_NLS_ISO8859_9=m
-CONFIG_NLS_ISO8859_13=m
-CONFIG_NLS_ISO8859_14=m
-CONFIG_NLS_ISO8859_15=m
-CONFIG_NLS_KOI8_R=m
-CONFIG_NLS_KOI8_U=m
-CONFIG_NLS_UTF8=m
-
-#
-# Security options
-#
-# CONFIG_KEYS is not set
-CONFIG_SECURITY=y
-CONFIG_SECURITY_NETWORK=y
-CONFIG_SECURITY_CAPABILITIES=y
-# CONFIG_SECURITY_SECLVL is not set
-CONFIG_SECURITY_SELINUX=y
-CONFIG_SECURITY_SELINUX_BOOTPARAM=y
-CONFIG_SECURITY_SELINUX_BOOTPARAM_VALUE=1
-CONFIG_SECURITY_SELINUX_DISABLE=y
-CONFIG_SECURITY_SELINUX_DEVELOP=y
-CONFIG_SECURITY_SELINUX_AVC_STATS=y
-# CONFIG_SECURITY_SELINUX_MLS is not set
-
-#
-# Cryptographic options
-#
-CONFIG_CRYPTO=y
-CONFIG_CRYPTO_HMAC=y
-CONFIG_CRYPTO_NULL=m
-CONFIG_CRYPTO_MD4=m
-CONFIG_CRYPTO_MD5=m
-CONFIG_CRYPTO_SHA1=y
-CONFIG_CRYPTO_SHA256=m
-CONFIG_CRYPTO_SHA512=m
-CONFIG_CRYPTO_WP512=m
-CONFIG_CRYPTO_DES=m
-CONFIG_CRYPTO_BLOWFISH=m
-CONFIG_CRYPTO_TWOFISH=m
-CONFIG_CRYPTO_SERPENT=m
-# CONFIG_CRYPTO_AES is not set
-CONFIG_CRYPTO_CAST5=m
-CONFIG_CRYPTO_CAST6=m
-CONFIG_CRYPTO_TEA=m
-CONFIG_CRYPTO_ARC4=m
-CONFIG_CRYPTO_KHAZAD=m
-# CONFIG_CRYPTO_ANUBIS is not set
-CONFIG_CRYPTO_DEFLATE=m
-CONFIG_CRYPTO_MICHAEL_MIC=m
-CONFIG_CRYPTO_CRC32C=m
-# CONFIG_CRYPTO_TEST is not set
-
-#
-# Hardware crypto devices
-#
-
-#
-# Library routines
-#
-CONFIG_CRC_CCITT=m
-CONFIG_CRC32=y
-CONFIG_LIBCRC32C=m
-CONFIG_ZLIB_INFLATE=y
-CONFIG_ZLIB_DEFLATE=m
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/Kconfig
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/Kconfig Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,921 +0,0 @@
-#
-# For a description of the syntax of this configuration file,
-# see Documentation/kbuild/kconfig-language.txt.
-#
-
-menu "X86 Processor Configuration"
-
-config XENARCH
- string
- default i386
-
-config X86
- bool
- default y
- help
- This is Linux's home port. Linux was originally native to the Intel
- 386, and runs on all the later x86 processors including the Intel
- 486, 586, Pentiums, and various instruction-set-compatible chips by
- AMD, Cyrix, and others.
-
-config MMU
- bool
- default y
-
-config SBUS
- bool
-
-config UID16
- bool
- default y
-
-config GENERIC_ISA_DMA
- bool
- default y
-
-config GENERIC_IOMAP
- bool
- default y
-
-choice
- prompt "Processor family"
- default M686
-
-config M386
- bool "386"
- ---help---
- This is the processor type of your CPU. This information is used for
- optimizing purposes. In order to compile a kernel that can run on
- all x86 CPU types (albeit not optimally fast), you can specify
- "386" here.
-
- The kernel will not necessarily run on earlier architectures than
- the one you have chosen, e.g. a Pentium optimized kernel will run on
- a PPro, but not necessarily on a i486.
-
- Here are the settings recommended for greatest speed:
- - "386" for the AMD/Cyrix/Intel 386DX/DXL/SL/SLC/SX, Cyrix/TI
- 486DLC/DLC2, UMC 486SX-S and NexGen Nx586. Only "386" kernels
- will run on a 386 class machine.
- - "486" for the AMD/Cyrix/IBM/Intel 486DX/DX2/DX4 or
- SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or U5S.
- - "586" for generic Pentium CPUs lacking the TSC
- (time stamp counter) register.
- - "Pentium-Classic" for the Intel Pentium.
- - "Pentium-MMX" for the Intel Pentium MMX.
- - "Pentium-Pro" for the Intel Pentium Pro.
- - "Pentium-II" for the Intel Pentium II or pre-Coppermine Celeron.
- - "Pentium-III" for the Intel Pentium III or Coppermine Celeron.
- - "Pentium-4" for the Intel Pentium 4 or P4-based Celeron.
- - "K6" for the AMD K6, K6-II and K6-III (aka K6-3D).
- - "Athlon" for the AMD K7 family (Athlon/Duron/Thunderbird).
- - "Crusoe" for the Transmeta Crusoe series.
- - "Efficeon" for the Transmeta Efficeon series.
- - "Winchip-C6" for original IDT Winchip.
- - "Winchip-2" for IDT Winchip 2.
- - "Winchip-2A" for IDT Winchips with 3dNow! capabilities.
- - "CyrixIII/VIA C3" for VIA Cyrix III or VIA C3.
- - "VIA C3-2 for VIA C3-2 "Nehemiah" (model 9 and above).
-
- If you don't know what to do, choose "386".
-
-config M486
- bool "486"
- help
- Select this for a 486 series processor, either Intel or one of the
- compatible processors from AMD, Cyrix, IBM, or Intel. Includes DX,
- DX2, and DX4 variants; also SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or
- U5S.
-
-config M586
- bool "586/K5/5x86/6x86/6x86MX"
- help
- Select this for an 586 or 686 series processor such as the AMD K5,
- the Cyrix 5x86, 6x86 and 6x86MX. This choice does not
- assume the RDTSC (Read Time Stamp Counter) instruction.
-
-config M586TSC
- bool "Pentium-Classic"
- help
- Select this for a Pentium Classic processor with the RDTSC (Read
- Time Stamp Counter) instruction for benchmarking.
-
-config M586MMX
- bool "Pentium-MMX"
- help
- Select this for a Pentium with the MMX graphics/multimedia
- extended instructions.
-
-config M686
- bool "Pentium-Pro"
- help
- Select this for Intel Pentium Pro chips. This enables the use of
- Pentium Pro extended instructions, and disables the init-time guard
- against the f00f bug found in earlier Pentiums.
-
-config MPENTIUMII
- bool "Pentium-II/Celeron(pre-Coppermine)"
- help
- Select this for Intel chips based on the Pentium-II and
- pre-Coppermine Celeron core. This option enables an unaligned
- copy optimization, compiles the kernel with optimization flags
- tailored for the chip, and applies any applicable Pentium Pro
- optimizations.
-
-config MPENTIUMIII
- bool "Pentium-III/Celeron(Coppermine)/Pentium-III Xeon"
- help
- Select this for Intel chips based on the Pentium-III and
- Celeron-Coppermine core. This option enables use of some
- extended prefetch instructions in addition to the Pentium II
- extensions.
-
-config MPENTIUMM
- bool "Pentium M"
- help
- Select this for Intel Pentium M (not Pentium-4 M)
- notebook chips.
-
-config MPENTIUM4
- bool "Pentium-4/Celeron(P4-based)/Pentium-4 M/Xeon"
- help
- Select this for Intel Pentium 4 chips. This includes the
- Pentium 4, P4-based Celeron and Xeon, and Pentium-4 M
- (not Pentium M) chips. This option enables compile flags
- optimized for the chip, uses the correct cache shift, and
- applies any applicable Pentium III optimizations.
-
-config MK6
- bool "K6/K6-II/K6-III"
- help
- Select this for an AMD K6-family processor. Enables use of
- some extended instructions, and passes appropriate optimization
- flags to GCC.
-
-config MK7
- bool "Athlon/Duron/K7"
- help
- Select this for an AMD Athlon K7-family processor. Enables use of
- some extended instructions, and passes appropriate optimization
- flags to GCC.
-
-config MK8
- bool "Opteron/Athlon64/Hammer/K8"
- help
- Select this for an AMD Opteron or Athlon64 Hammer-family processor.
Enables
- use of some extended instructions, and passes appropriate optimization
- flags to GCC.
-
-config MCRUSOE
- bool "Crusoe"
- help
- Select this for a Transmeta Crusoe processor. Treats the processor
- like a 586 with TSC, and sets some GCC optimization flags (like a
- Pentium Pro with no alignment requirements).
-
-config MEFFICEON
- bool "Efficeon"
- help
- Select this for a Transmeta Efficeon processor.
-
-config MWINCHIPC6
- bool "Winchip-C6"
- help
- Select this for an IDT Winchip C6 chip. Linux and GCC
- treat this chip as a 586TSC with some extended instructions
- and alignment requirements.
-
-config MWINCHIP2
- bool "Winchip-2"
- help
- Select this for an IDT Winchip-2. Linux and GCC
- treat this chip as a 586TSC with some extended instructions
- and alignment requirements.
-
-config MWINCHIP3D
- bool "Winchip-2A/Winchip-3"
- help
- Select this for an IDT Winchip-2A or 3. Linux and GCC
- treat this chip as a 586TSC with some extended instructions
- and alignment reqirements. Also enable out of order memory
- stores for this CPU, which can increase performance of some
- operations.
-
-config MCYRIXIII
- bool "CyrixIII/VIA-C3"
- help
- Select this for a Cyrix III or C3 chip. Presently Linux and GCC
- treat this chip as a generic 586. Whilst the CPU is 686 class,
- it lacks the cmov extension which gcc assumes is present when
- generating 686 code.
- Note that Nehemiah (Model 9) and above will not boot with this
- kernel due to them lacking the 3DNow! instructions used in earlier
- incarnations of the CPU.
-
-config MVIAC3_2
- bool "VIA C3-2 (Nehemiah)"
- help
- Select this for a VIA C3 "Nehemiah". Selecting this enables usage
- of SSE and tells gcc to treat the CPU as a 686.
- Note, this kernel will not boot on older (pre model 9) C3s.
-
-endchoice
-
-config X86_GENERIC
- bool "Generic x86 support"
- help
- Instead of just including optimizations for the selected
- x86 variant (e.g. PII, Crusoe or Athlon), include some more
- generic optimizations as well. This will make the kernel
- perform better on x86 CPUs other than that selected.
-
- This is really intended for distributors who need more
- generic optimizations.
-
-#
-# Define implied options from the CPU selection here
-#
-config X86_CMPXCHG
- bool
- depends on !M386
- default y
-
-config X86_XADD
- bool
- depends on !M386
- default y
-
-config X86_L1_CACHE_SHIFT
- int
- default "7" if MPENTIUM4 || X86_GENERIC
- default "4" if X86_ELAN || M486 || M386
- default "5" if MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCRUSOE ||
MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX
|| M586TSC || M586 || MVIAC3_2
- default "6" if MK7 || MK8 || MPENTIUMM
-
-config RWSEM_GENERIC_SPINLOCK
- bool
- depends on M386
- default y
-
-config RWSEM_XCHGADD_ALGORITHM
- bool
- depends on !M386
- default y
-
-config GENERIC_CALIBRATE_DELAY
- bool
- default y
-
-config X86_PPRO_FENCE
- bool
- depends on M686 || M586MMX || M586TSC || M586 || M486 || M386
- default y
-
-config X86_F00F_BUG
- bool
- depends on M586MMX || M586TSC || M586 || M486 || M386
- default y
-
-config X86_WP_WORKS_OK
- bool
- depends on !M386
- default y
-
-config X86_INVLPG
- bool
- depends on !M386
- default y
-
-config X86_BSWAP
- bool
- depends on !M386
- default y
-
-config X86_POPAD_OK
- bool
- depends on !M386
- default y
-
-config X86_ALIGNMENT_16
- bool
- depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII ||
X86_ELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2
- default y
-
-config X86_GOOD_APIC
- bool
- depends on MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII
|| M686 || M586MMX || MK8 || MEFFICEON
- default y
-
-config X86_INTEL_USERCOPY
- bool
- depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII ||
M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON
- default y
-
-config X86_USE_PPRO_CHECKSUM
- bool
- depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || MK7 ||
MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 ||
MVIAC3_2 || MEFFICEON
- default y
-
-config X86_USE_3DNOW
- bool
- depends on MCYRIXIII || MK7
- default y
-
-config X86_OOSTORE
- bool
- depends on (MWINCHIP3D || MWINCHIP2 || MWINCHIPC6) && MTRR
- default y
-
-config HPET_TIMER
- bool
- default n
-#config HPET_TIMER
-# bool "HPET Timer Support"
-# help
-# This enables the use of the HPET for the kernel's internal timer.
-# HPET is the next generation timer replacing legacy 8254s.
-# You can safely choose Y here. However, HPET will only be
-# activated if the platform and the BIOS support this feature.
-# Otherwise the 8254 will be used for timing services.
-#
-# Choose N to continue using the legacy 8254 timer.
-
-config HPET_EMULATE_RTC
- def_bool HPET_TIMER && RTC=y
-
-config SMP
- bool "Symmetric multi-processing support"
- ---help---
- This enables support for systems with more than one CPU. If you have
- a system with only one CPU, like most personal computers, say N. If
- you have a system with more than one CPU, say Y.
-
- If you say N here, the kernel will run on single and multiprocessor
- machines, but will use only one CPU of a multiprocessor machine. If
- you say Y here, the kernel will run on many, but not all,
- singleprocessor machines. On a singleprocessor machine, the kernel
- will run faster if you say N here.
-
- Note that if you say Y here and choose architecture "586" or
- "Pentium" under "Processor family", the kernel will not work on 486
- architectures. Similarly, multiprocessor kernels for the "PPro"
- architecture may not work on all Pentium based boards.
-
- People using multiprocessor machines who say Y here should also say
- Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
- Management" code will be disabled if you say Y here.
-
- See also the <file:Documentation/smp.txt>,
- <file:Documentation/i386/IO-APIC.txt>,
- <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
- <http://www.tldp.org/docs.html#howto>.
-
- If you don't know what to do here, say N.
-
-config SMP_ALTERNATIVES
- bool "SMP alternatives support (EXPERIMENTAL)"
- depends on SMP && EXPERIMENTAL
- help
- Try to reduce the overhead of running an SMP kernel on a uniprocessor
- host slightly by replacing certain key instruction sequences
- according to whether we currently have more than one CPU available.
- This should provide a noticeable boost to performance when
- running SMP kernels on UP machines, and have negligible impact
- when running on an true SMP host.
-
- If unsure, say N.
-
-config NR_CPUS
- int "Maximum number of CPUs (2-255)"
- range 2 255
- depends on SMP
- default "32" if X86_NUMAQ || X86_SUMMIT || X86_BIGSMP || X86_ES7000
- default "8"
- help
- This allows you to specify the maximum number of CPUs which this
- kernel will support. The maximum supported value is 255 and the
- minimum value which makes sense is 2.
-
- This is purely to save memory - each supported CPU adds
- approximately eight kilobytes to the kernel image.
-
-config SCHED_SMT
- bool "SMT (Hyperthreading) scheduler support"
- depends on SMP
- default off
- help
- SMT scheduler support improves the CPU scheduler's decision making
- when dealing with Intel Pentium 4 chips with HyperThreading at a
- cost of slightly increased overhead in some places. If unsure say
- N here.
-
-config PREEMPT
- bool "Preemptible Kernel"
- help
- This option reduces the latency of the kernel when reacting to
- real-time or interactive events by allowing a low priority process to
- be preempted even if it is in kernel mode executing a system call.
- This allows applications to run more reliably even when the system is
- under load.
-
- Say Y here if you are building a kernel for a desktop, embedded
- or real-time system. Say N if you are unsure.
-
-config PREEMPT_BKL
- bool "Preempt The Big Kernel Lock"
- depends on PREEMPT
- default y
- help
- This option reduces the latency of the kernel by making the
- big kernel lock preemptible.
-
- Say Y here if you are building a kernel for a desktop system.
- Say N if you are unsure.
-
-#config X86_TSC
-# bool
-# depends on (MWINCHIP3D || MWINCHIP2 || MCRUSOE || MEFFICEON ||
MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII
|| M686 || M586MMX || M586TSC || MK8 || MVIAC3_2) && !X86_NUMAQ
-# default y
-
-#config X86_MCE
-# bool "Machine Check Exception"
-# depends on !X86_VOYAGER
-# ---help---
-# Machine Check Exception support allows the processor to notify the
-# kernel if it detects a problem (e.g. overheating, component failure).
-# The action the kernel takes depends on the severity of the problem,
-# ranging from a warning message on the console, to halting the
machine.
-# Your processor must be a Pentium or newer to support this - check the
-# flags in /proc/cpuinfo for mce. Note that some older Pentium systems
-# have a design flaw which leads to false MCE events - hence MCE is
-# disabled on all P5 processors, unless explicitly enabled with "mce"
-# as a boot argument. Similarly, if MCE is built in and creates a
-# problem on some new non-standard machine, you can boot with "nomce"
-# to disable it. MCE support simply ignores non-MCE processors like
-# the 386 and 486, so nearly everyone can say Y here.
-
-#config X86_MCE_NONFATAL
-# tristate "Check for non-fatal errors on AMD Athlon/Duron / Intel
Pentium 4"
-# depends on X86_MCE
-# help
-# Enabling this feature starts a timer that triggers every 5 seconds
which
-# will look at the machine check registers to see if anything happened.
-# Non-fatal problems automatically get corrected (but still logged).
-# Disable this if you don't want to see these messages.
-# Seeing the messages this option prints out may be indicative of
dying hardware,
-# or out-of-spec (ie, overclocked) hardware.
-# This option only does something on certain CPUs.
-# (AMD Athlon/Duron and Intel Pentium 4)
-
-#config X86_MCE_P4THERMAL
-# bool "check for P4 thermal throttling interrupt."
-# depends on X86_MCE && (X86_UP_APIC || SMP)
-# help
-# Enabling this feature will cause a message to be printed when the P4
-# enters thermal throttling.
-
-config MICROCODE
- tristate "/dev/cpu/microcode - Intel IA32 CPU microcode support"
- depends on XEN_PRIVILEGED_GUEST
- ---help---
- If you say Y here and also to "/dev file system support" in the
- 'File systems' section, you will be able to update the microcode on
- Intel processors in the IA32 family, e.g. Pentium Pro, Pentium II,
- Pentium III, Pentium 4, Xeon etc. You will obviously need the
- actual microcode binary data itself which is not shipped with the
- Linux kernel.
-
- For latest news and information on obtaining all the required
- ingredients for this driver, check:
- <http://www.urbanmyth.org/microcode/>.
-
- To compile this driver as a module, choose M here: the
- module will be called microcode.
-
-#config X86_MSR
-# tristate "/dev/cpu/*/msr - Model-specific register support"
-# help
-# This device gives privileged processes access to the x86
-# Model-Specific Registers (MSRs). It is a character device with
-# major 202 and minors 0 to 31 for /dev/cpu/0/msr to /dev/cpu/31/msr.
-# MSR accesses are directed to a specific CPU on multi-processor
-# systems.
-
-config X86_CPUID
- tristate "/dev/cpu/*/cpuid - CPU information support"
- help
- This device gives processes access to the x86 CPUID instruction to
- be executed on a specific processor. It is a character device
- with major 203 and minors 0 to 31 for /dev/cpu/0/cpuid to
- /dev/cpu/31/cpuid.
-
-source "drivers/firmware/Kconfig"
-
-choice
- prompt "High Memory Support"
- default NOHIGHMEM
-
-config NOHIGHMEM
- bool "off"
- ---help---
- Linux can use up to 64 Gigabytes of physical memory on x86 systems.
- However, the address space of 32-bit x86 processors is only 4
- Gigabytes large. That means that, if you have a large amount of
- physical memory, not all of it can be "permanently mapped" by the
- kernel. The physical memory that's not permanently mapped is called
- "high memory".
-
- If you are compiling a kernel which will never run on a machine with
- more than 1 Gigabyte total physical RAM, answer "off" here (default
- choice and suitable for most users). This will result in a "3GB/1GB"
- split: 3GB are mapped so that each process sees a 3GB virtual memory
- space and the remaining part of the 4GB virtual memory space is used
- by the kernel to permanently map as much physical memory as
- possible.
-
- If the machine has between 1 and 4 Gigabytes physical RAM, then
- answer "4GB" here.
-
- If more than 4 Gigabytes is used then answer "64GB" here. This
- selection turns Intel PAE (Physical Address Extension) mode on.
- PAE implements 3-level paging on IA32 processors. PAE is fully
- supported by Linux, PAE mode is implemented on all recent Intel
- processors (Pentium Pro and better). NOTE: If you say "64GB" here,
- then the kernel will not boot on CPUs that don't support PAE!
-
- The actual amount of total physical memory will either be
- auto detected or can be forced by using a kernel command line option
- such as "mem=256M". (Try "man bootparam" or see the documentation of
- your boot loader (lilo or loadlin) about how to pass options to the
- kernel at boot time.)
-
- If unsure, say "off".
-
-config HIGHMEM4G
- bool "4GB"
- help
- Select this if you have a 32-bit processor and between 1 and 4
- gigabytes of physical RAM.
-
-#config HIGHMEM64G
-# bool "64GB"
-# help
-# Select this if you have a 32-bit processor and more than 4
-# gigabytes of physical RAM.
-
-endchoice
-
-config HIGHMEM
- bool
- depends on HIGHMEM64G || HIGHMEM4G
- default y
-
-config X86_PAE
- bool
- depends on HIGHMEM64G
- default y
-
-# Common NUMA Features
-config NUMA
- bool "Numa Memory Allocation and Scheduler Support"
- depends on SMP && HIGHMEM64G && (X86_NUMAQ || X86_GENERICARCH ||
(X86_SUMMIT && ACPI))
- default n if X86_PC
- default y if (X86_NUMAQ || X86_SUMMIT)
-
-# Need comments to help the hapless user trying to turn on NUMA support
-comment "NUMA (NUMA-Q) requires SMP, 64GB highmem support"
- depends on X86_NUMAQ && (!HIGHMEM64G || !SMP)
-
-comment "NUMA (Summit) requires SMP, 64GB highmem support, ACPI"
- depends on X86_SUMMIT && (!HIGHMEM64G || !ACPI)
-
-config DISCONTIGMEM
- bool
- depends on NUMA
- default y
-
-config HAVE_ARCH_BOOTMEM_NODE
- bool
- depends on NUMA
- default y
-
-#config HIGHPTE
-# bool "Allocate 3rd-level pagetables from highmem"
-# depends on HIGHMEM4G || HIGHMEM64G
-# help
-# The VM uses one page table entry for each page of physical memory.
-# For systems with a lot of RAM, this can be wasteful of precious
-# low memory. Setting this option will put user-space page table
-# entries in high memory.
-
-config MTRR
- bool
- depends on XEN_PRIVILEGED_GUEST
- default y
-
-#config MTRR
-# bool "MTRR (Memory Type Range Register) support"
-# ---help---
-# On Intel P6 family processors (Pentium Pro, Pentium II and later)
-# the Memory Type Range Registers (MTRRs) may be used to control
-# processor access to memory ranges. This is most useful if you have
-# a video (VGA) card on a PCI or AGP bus. Enabling write-combining
-# allows bus write transfers to be combined into a larger transfer
-# before bursting over the PCI/AGP bus. This can increase performance
-# of image write operations 2.5 times or more. Saying Y here creates a
-# /proc/mtrr file which may be used to manipulate your processor's
-# MTRRs. Typically the X server should use this.
-#
-# This code has a reasonably generic interface so that similar
-# control registers on other processors can be easily supported
-# as well:
-#
-# The Cyrix 6x86, 6x86MX and M II processors have Address Range
-# Registers (ARRs) which provide a similar functionality to MTRRs. For
-# these, the ARRs are used to emulate the MTRRs.
-# The AMD K6-2 (stepping 8 and above) and K6-3 processors have two
-# MTRRs. The Centaur C6 (WinChip) has 8 MCRs, allowing
-# write-combining. All of these processors are supported by this code
-# and it makes sense to say Y here if you have one of them.
-#
-# Saying Y here also fixes a problem with buggy SMP BIOSes which only
-# set the MTRRs for the boot CPU and not for the secondary CPUs. This
-# can lead to all sorts of problems, so it's good to say Y here.
-#
-# You can safely say Y even if your machine doesn't have MTRRs, you'll
-# just add about 9 KB to your kernel.
-#
-# See <file:Documentation/mtrr.txt> for more information.
-
-config IRQBALANCE
- bool "Enable kernel irq balancing"
- depends on SMP && X86_IO_APIC && !XEN
- default y
- help
- The default yes will allow the kernel to do irq load balancing.
- Saying no will keep the kernel from doing irq load balancing.
-
-config HAVE_DEC_LOCK
- bool
- depends on (SMP || PREEMPT) && X86_CMPXCHG
- default y
-
-# turning this on wastes a bunch of space.
-# Summit needs it only when NUMA is on
-config BOOT_IOREMAP
- bool
- depends on (((X86_SUMMIT || X86_GENERICARCH) && NUMA) || (X86 && EFI))
- default y
-
-config REGPARM
- bool "Use register arguments (EXPERIMENTAL)"
- depends on EXPERIMENTAL
- default n
- help
- Compile the kernel with -mregparm=3. This uses a different ABI
- and passes the first three arguments of a function call in registers.
- This will probably break binary only modules.
-
- This feature is only enabled for gcc-3.0 and later - earlier compilers
- generate incorrect output with certain kernel constructs when
- -mregparm=3 is used.
-
-config X86_LOCAL_APIC
- bool
- depends on !SMP && X86_UP_APIC
- default y
-
-config X86_IO_APIC
- bool
- depends on !SMP && X86_UP_IOAPIC
- default y
-
-config HOTPLUG_CPU
- bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
- depends on SMP && HOTPLUG && EXPERIMENTAL
- ---help---
- Say Y here to experiment with turning CPUs off and on. CPUs
- can be controlled through /sys/devices/system/cpu.
-
- Say N.
-
-
-if XEN_PHYSDEV_ACCESS
-
-menu "Bus options (PCI, PCMCIA, EISA, MCA, ISA)"
-
-config X86_VISWS_APIC
- bool
- depends on X86_VISWS
- default y
-
-config X86_LOCAL_APIC
- bool
- depends on (X86_VISWS || SMP) && !X86_VOYAGER
- default y
-
-config X86_UP_APIC
- bool "Local APIC support on uniprocessors" if !SMP
- depends on !(X86_VISWS || X86_VOYAGER)
- ---help---
- A local APIC (Advanced Programmable Interrupt Controller) is an
- integrated interrupt controller in the CPU. If you have a single-CPU
- system which has a processor with a local APIC, you can say Y here to
- enable and use it. If you say Y here even though your machine doesn't
- have a local APIC, then the kernel will still run with no slowdown at
- all. The local APIC supports CPU-generated self-interrupts (timer,
- performance counters), and the NMI watchdog which detects hard
- lockups.
-
- If you have a system with several CPUs, you do not need to say Y
- here: the local APIC will be used automatically.
-
-config X86_UP_IOAPIC
- bool "IO-APIC support on uniprocessors"
- depends on !SMP && X86_UP_APIC
- help
- An IO-APIC (I/O Advanced Programmable Interrupt Controller) is an
- SMP-capable replacement for PC-style interrupt controllers. Most
- SMP systems and a small number of uniprocessor systems have one.
- If you have a single-CPU system with an IO-APIC, you can say Y here
- to use it. If you say Y here even though your machine doesn't have
- an IO-APIC, then the kernel will still run with no slowdown at all.
-
- If you have a system with several CPUs, you do not need to say Y
- here: the IO-APIC will be used automatically.
-
-config X86_IO_APIC
- bool
- depends on SMP && !(X86_VISWS || X86_VOYAGER)
- default y
-
-config PCI
- bool "PCI support" if !X86_VISWS
- depends on !X86_VOYAGER
- default y if X86_VISWS
- help
- Find out whether you have a PCI motherboard. PCI is the name of a
- bus system, i.e. the way the CPU talks to the other stuff inside
- your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
- VESA. If you have PCI, say Y, otherwise N.
-
- The PCI-HOWTO, available from
- <http://www.tldp.org/docs.html#howto>, contains valuable
- information about which PCI hardware does work under Linux and which
- doesn't.
-
-choice
- prompt "PCI access mode"
- depends on PCI && !X86_VISWS
- default PCI_GOANY
- ---help---
- On PCI systems, the BIOS can be used to detect the PCI devices and
- determine their configuration. However, some old PCI motherboards
- have BIOS bugs and may crash if this is done. Also, some embedded
- PCI-based systems don't have any BIOS at all. Linux can also try to
- detect the PCI hardware directly without using the BIOS.
-
- With this option, you can specify how Linux should detect the
- PCI devices. If you choose "BIOS", the BIOS will be used,
- if you choose "Direct", the BIOS won't be used, and if you
- choose "MMConfig", then PCI Express MMCONFIG will be used.
- If you choose "Any", the kernel will try MMCONFIG, then the
- direct access method and falls back to the BIOS if that doesn't
- work. If unsure, go with the default, which is "Any".
-
-config PCI_GOBIOS
- bool "BIOS"
-
-config PCI_GOMMCONFIG
- bool "MMConfig"
-
-config PCI_GODIRECT
- bool "Direct"
-
-config PCI_GOANY
- bool "Any"
-
-endchoice
-
-config PCI_BIOS
- bool
- depends on !X86_VISWS && PCI && (PCI_GOBIOS || PCI_GOANY)
- default y
-
-config PCI_DIRECT
- bool
- depends on PCI && ((PCI_GODIRECT || PCI_GOANY) || X86_VISWS)
- default y
-
-config PCI_MMCONFIG
- bool
- depends on PCI && (PCI_GOMMCONFIG || (PCI_GOANY && ACPI))
- select ACPI_BOOT
- default y
-
-source "drivers/pci/pcie/Kconfig"
-
-source "drivers/pci/Kconfig"
-
-config ISA
- bool "ISA support"
- depends on !(X86_VOYAGER || X86_VISWS)
- help
- Find out whether you have ISA slots on your motherboard. ISA is the
- name of a bus system, i.e. the way the CPU talks to the other stuff
- inside your box. Other bus systems are PCI, EISA, MicroChannel
- (MCA) or VESA. ISA is an older system, now being displaced by PCI;
- newer boards don't support it. If you have ISA, say Y, otherwise N.
-
-config EISA
- bool "EISA support"
- depends on ISA
- ---help---
- The Extended Industry Standard Architecture (EISA) bus was
- developed as an open alternative to the IBM MicroChannel bus.
-
- The EISA bus provided some of the features of the IBM MicroChannel
- bus while maintaining backward compatibility with cards made for
- the older ISA bus. The EISA bus saw limited use between 1988 and
- 1995 when it was made obsolete by the PCI bus.
-
- Say Y here if you are building a kernel for an EISA-based machine.
-
- Otherwise, say N.
-
-source "drivers/eisa/Kconfig"
-
-config MCA
- bool "MCA support"
- depends on !(X86_VISWS || X86_VOYAGER)
- help
- MicroChannel Architecture is found in some IBM PS/2 machines and
- laptops. It is a bus system similar to PCI or ISA. See
- <file:Documentation/mca.txt> (and especially the web page given
- there) before attempting to build an MCA bus kernel.
-
-config MCA
- depends on X86_VOYAGER
- default y if X86_VOYAGER
-
-source "drivers/mca/Kconfig"
-
-config SCx200
- tristate "NatSemi SCx200 support"
- depends on !X86_VOYAGER
- help
- This provides basic support for the National Semiconductor SCx200
- processor. Right now this is just a driver for the GPIO pins.
-
- If you don't know what to do here, say N.
-
- This support is also available as a module. If compiled as a
- module, it will be called scx200.
-
-source "drivers/pcmcia/Kconfig"
-
-source "drivers/pci/hotplug/Kconfig"
-
-endmenu
-
-endif
-
-source "arch/i386/Kconfig.debug"
-
-#
-# Use the generic interrupt handling code in kernel/irq/:
-#
-config GENERIC_HARDIRQS
- bool
- default y
-
-config GENERIC_IRQ_PROBE
- bool
- default y
-
-config X86_SMP
- bool
- depends on SMP && !X86_VOYAGER
- default y
-
-#config X86_HT
-# bool
-# depends on SMP && !(X86_VISWS || X86_VOYAGER)
-# default y
-
-config X86_BIOS_REBOOT
- bool
- depends on !(X86_VISWS || X86_VOYAGER)
- default y
-
-config X86_TRAMPOLINE
- bool
- depends on X86_SMP || (X86_VOYAGER && SMP)
- default y
-
-config PC
- bool
- depends on X86 && !EMBEDDED
- default y
-
-endmenu
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/Makefile
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/Makefile Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,103 +0,0 @@
-#
-# i386/Makefile
-#
-# This file is included by the global makefile so that you can add your own
-# architecture-specific flags and dependencies. Remember to do have actions
-# for "archclean" cleaning up for this architecture.
-#
-# This file is subject to the terms and conditions of the GNU General Public
-# License. See the file "COPYING" in the main directory of this archive
-# for more details.
-#
-# Copyright (C) 1994 by Linus Torvalds
-#
-# 19990713 Artur Skawina <skawina@xxxxxxxxxxxxx>
-# Added '-march' and '-mpreferred-stack-boundary' support
-#
-
-XENARCH := $(subst ",,$(CONFIG_XENARCH))
-
-LDFLAGS := -m elf_i386
-LDFLAGS_vmlinux :=
-CHECK := $(CHECK) -D__i386__=1
-
-CFLAGS += -m32
-AFLAGS += -m32
-
-CFLAGS += -pipe -msoft-float
-
-# prevent gcc from keeping the stack 16 byte aligned
-CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2,)
-
-align := $(cc-option-align)
-cflags-$(CONFIG_M386) += -march=i386
-cflags-$(CONFIG_M486) += -march=i486
-cflags-$(CONFIG_M586) += -march=i586
-cflags-$(CONFIG_M586TSC) += -march=i586
-cflags-$(CONFIG_M586MMX) += $(call
cc-option,-march=pentium-mmx,-march=i586)
-cflags-$(CONFIG_M686) += -march=i686
-cflags-$(CONFIG_MPENTIUMII) += -march=i686 $(call cc-option,-mtune=pentium2)
-cflags-$(CONFIG_MPENTIUMIII) += -march=i686 $(call cc-option,-mtune=pentium3)
-cflags-$(CONFIG_MPENTIUMM) += -march=i686 $(call cc-option,-mtune=pentium3)
-cflags-$(CONFIG_MPENTIUM4) += -march=i686 $(call cc-option,-mtune=pentium4)
-cflags-$(CONFIG_MK6) += -march=k6
-# Please note, that patches that add -march=athlon-xp and friends are
pointless.
-# They make zero difference whatsosever to performance at this time.
-cflags-$(CONFIG_MK7) += $(call cc-option,-march=athlon,-march=i686
$(align)-functions=4)
-cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8,$(call
cc-option,-march=athlon,-march=i686 $(align)-functions=4))
-cflags-$(CONFIG_MCRUSOE) += -march=i686 $(align)-functions=0
$(align)-jumps=0 $(align)-loops=0
-cflags-$(CONFIG_MEFFICEON) += -march=i686 $(call
cc-option,-mtune=pentium3) $(align)-functions=0 $(align)-jumps=0
$(align)-loops=0
-cflags-$(CONFIG_MWINCHIPC6) += $(call
cc-option,-march=winchip-c6,-march=i586)
-cflags-$(CONFIG_MWINCHIP2) += $(call cc-option,-march=winchip2,-march=i586)
-cflags-$(CONFIG_MWINCHIP3D) += $(call cc-option,-march=winchip2,-march=i586)
-cflags-$(CONFIG_MCYRIXIII) += $(call cc-option,-march=c3,-march=i486)
$(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
-cflags-$(CONFIG_MVIAC3_2) += $(call cc-option,-march=c3-2,-march=i686)
-
-# AMD Elan support
-cflags-$(CONFIG_X86_ELAN) += -march=i486
-
-# -mregparm=3 works ok on gcc-3.0 and later
-#
-GCC_VERSION := $(shell $(CONFIG_SHELL)
$(srctree)/scripts/gcc-version.sh $(CC))
-cflags-$(CONFIG_REGPARM) += $(shell if [ $(GCC_VERSION) -ge 0300 ] ;
then echo "-mregparm=3"; fi ;)
-
-# Disable unit-at-a-time mode, it makes gcc use a lot more stack
-# due to the lack of sharing of stacklots.
-CFLAGS += $(call cc-option,-fno-unit-at-a-time,)
-
-CFLAGS += $(cflags-y)
-
-head-y := arch/xen/i386/kernel/head.o arch/xen/i386/kernel/init_task.o
-
-libs-y += arch/i386/lib/
-core-y += arch/xen/i386/kernel/ \
- arch/xen/i386/mm/ \
- arch/xen/i386/mach-default/ \
- arch/i386/crypto/
-# \
-# arch/xen/$(mcore-y)/
-drivers-$(CONFIG_MATH_EMULATION) += arch/i386/math-emu/
-drivers-$(CONFIG_PCI) += arch/xen/i386/pci/
-# must be linked after kernel/
-drivers-$(CONFIG_OPROFILE) += arch/i386/oprofile/
-drivers-$(CONFIG_PM) += arch/i386/power/
-
-# for clean
-obj- += kernel/ mm/ pci/
-#obj- += ../../i386/lib/ ../../i386/mm/
-#../../i386/$(mcore-y)/
-#obj- += ../../i386/pci/ ../../i386/oprofile/ ../../i386/power/
-
-xenflags-y += -Iinclude/asm-xen/asm-i386/mach-xen \
- -Iinclude/asm-i386/mach-default
-CFLAGS += $(xenflags-y)
-AFLAGS += $(xenflags-y)
-
-prepare: include/asm-$(XENARCH)/asm_offsets.h
-CLEAN_FILES += include/asm-$(XENARCH)/asm_offsets.h
-
-arch/$(XENARCH)/kernel/asm-offsets.s: include/asm include/.asm-ignore \
- include/linux/version.h include/config/MARKER
-
-include/asm-$(XENARCH)/asm_offsets.h: arch/$(XENARCH)/kernel/asm-offsets.s
- $(call filechk,gen-asm-offsets)
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/Makefile
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/Makefile Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,96 +0,0 @@
-#
-# Makefile for the linux kernel.
-#
-
-XENARCH := $(subst ",,$(CONFIG_XENARCH))
-
-CFLAGS += -Iarch/$(XENARCH)/kernel
-
-extra-y := head.o init_task.o
-
-obj-y := process.o signal.o entry.o traps.o \
- time.o ioport.o ldt.o setup.o \
- pci-dma.o i386_ksyms.o irq.o
-
-c-obj-y := semaphore.o vm86.o \
- ptrace.o sys_i386.o \
- i387.o dmi_scan.o bootflag.o \
- doublefault.o quirks.o
-s-obj-y :=
-
-obj-y += cpu/
-obj-y += timers/
-obj-$(CONFIG_ACPI_BOOT) += acpi/
-#c-obj-$(CONFIG_X86_BIOS_REBOOT) += reboot.o
-c-obj-$(CONFIG_MCA) += mca.o
-c-obj-$(CONFIG_X86_MSR) += msr.o
-c-obj-$(CONFIG_X86_CPUID) += cpuid.o
-obj-$(CONFIG_MICROCODE) += microcode.o
-c-obj-$(CONFIG_APM) += apm.o
-obj-$(CONFIG_X86_SMP) += smp.o smpboot.o
-#obj-$(CONFIG_X86_TRAMPOLINE) += trampoline.o
-obj-$(CONFIG_X86_MPPARSE) += mpparse.o
-obj-$(CONFIG_X86_LOCAL_APIC) += apic.o
-c-obj-$(CONFIG_X86_LOCAL_APIC) += nmi.o
-obj-$(CONFIG_X86_IO_APIC) += io_apic.o
-c-obj-$(CONFIG_X86_NUMAQ) += numaq.o
-c-obj-$(CONFIG_X86_SUMMIT_NUMA) += summit.o
-c-obj-$(CONFIG_MODULES) += module.o
-c-obj-y += sysenter.o
-obj-y += vsyscall.o
-c-obj-$(CONFIG_ACPI_SRAT) += srat.o
-c-obj-$(CONFIG_HPET_TIMER) += time_hpet.o
-c-obj-$(CONFIG_EFI) += efi.o efi_stub.o
-c-obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
-c-obj-$(CONFIG_SMP_ALTERNATIVES)+= smpalts.o
-
-EXTRA_AFLAGS := -traditional
-
-c-obj-$(CONFIG_SCx200) += scx200.o
-
-# vsyscall.o contains the vsyscall DSO images as __initdata.
-# We must build both images before we can assemble it.
-# Note: kbuild does not track this dependency due to usage of .incbin
-$(obj)/vsyscall.o: $(obj)/vsyscall-int80.so $(obj)/vsyscall-sysenter.so
-targets += $(foreach F,int80 sysenter,vsyscall-$F.o vsyscall-$F.so)
-targets += vsyscall.lds
-
-# The DSO images are built using a special linker script.
-quiet_cmd_syscall = SYSCALL $@
- cmd_syscall = $(CC) -nostdlib -m32 $(SYSCFLAGS_$(@F)) \
- -Wl,-T,$(filter-out FORCE,$^) -o $@
-
-export CPPFLAGS_vsyscall.lds += -P -C -U$(ARCH)
-
-vsyscall-flags = -shared -s -Wl,-soname=linux-gate.so.1
-SYSCFLAGS_vsyscall-sysenter.so = $(vsyscall-flags)
-SYSCFLAGS_vsyscall-int80.so = $(vsyscall-flags)
-
-$(obj)/vsyscall-int80.so $(obj)/vsyscall-sysenter.so: \
-$(obj)/vsyscall-%.so: $(src)/vsyscall.lds $(obj)/vsyscall-%.o FORCE
- $(call if_changed,syscall)
-
-# We also create a special relocatable object that should mirror the symbol
-# table and layout of the linked DSO. With ld -R we can then refer to
-# these symbols in the kernel code rather than hand-coded addresses.
-extra-y += vsyscall-syms.o
-$(obj)/built-in.o: $(obj)/vsyscall-syms.o
-$(obj)/built-in.o: ld_flags += -R $(obj)/vsyscall-syms.o
-
-SYSCFLAGS_vsyscall-syms.o = -r
-$(obj)/vsyscall-syms.o: $(src)/vsyscall.lds $(obj)/vsyscall-sysenter.o FORCE
- $(call if_changed,syscall)
-
-c-link := init_task.o
-s-link := vsyscall-int80.o vsyscall-sysenter.o vsyscall-sigreturn.o
vsyscall.lds.o
-
-$(patsubst %.o,$(obj)/%.c,$(c-obj-y) $(c-obj-m) $(c-link)) $(patsubst
%.o,$(obj)/%.S,$(s-obj-y) $(s-link)):
- @ln -fsn $(srctree)/arch/i386/kernel/$(notdir $@) $@
-
-$(obj)/vsyscall-int80.S: $(obj)/vsyscall-sigreturn.S
-
-obj-y += $(c-obj-y) $(s-obj-y)
-obj-m += $(c-obj-m)
-
-clean-files += $(patsubst %.o,%.c,$(c-obj-y) $(c-obj-m) $(c-obj-) $(c-link))
-clean-files += $(patsubst %.o,%.S,$(s-obj-y) $(s-obj-) $(s-link))
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/acpi/Makefile
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/acpi/Makefile Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,13 +0,0 @@
-obj-$(CONFIG_ACPI_BOOT) := boot.o
-c-obj-$(CONFIG_X86_IO_APIC) += earlyquirk.o
-c-obj-$(CONFIG_ACPI_SLEEP) += sleep.o wakeup.o
-
-c-link :=
-
-$(patsubst %.o,$(obj)/%.c,$(c-obj-y) $(c-link)):
- @ln -fsn $(srctree)/arch/i386/kernel/acpi/$(notdir $@) $@
-
-obj-y += $(c-obj-y) $(s-obj-y)
-
-clean-files += $(patsubst %.o,%.c,$(c-obj-y) $(c-obj-) $(c-link))
-clean-files += $(patsubst %.o,%.S,$(s-obj-y) $(s-obj-) $(s-link))
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/acpi/boot.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/acpi/boot.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,906 +0,0 @@
-/*
- * boot.c - Architecture-Specific Low-Level ACPI Boot Support
- *
- * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@xxxxxxxxx>
- * Copyright (C) 2001 Jun Nakajima <jun.nakajima@xxxxxxxxx>
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- */
-
-#include <linux/init.h>
-#include <linux/config.h>
-#include <linux/acpi.h>
-#include <linux/efi.h>
-#include <linux/irq.h>
-#include <linux/module.h>
-
-#include <asm/pgtable.h>
-#include <asm/io_apic.h>
-#include <asm/apic.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/mpspec.h>
-#ifdef CONFIG_XEN
-#include <asm/fixmap.h>
-#endif
-
-void (*pm_power_off)(void) = NULL;
-
-#ifdef CONFIG_X86_64
-
-static inline void acpi_madt_oem_check(char *oem_id, char *oem_table_id) { }
-extern void __init clustered_apic_check(void);
-static inline int ioapic_setup_disabled(void) { return 0; }
-#include <asm/proto.h>
-
-#else /* X86 */
-
-#ifdef CONFIG_X86_LOCAL_APIC
-#include <mach_apic.h>
-#include <mach_mpparse.h>
-#endif /* CONFIG_X86_LOCAL_APIC */
-
-#endif /* X86 */
-
-#define BAD_MADT_ENTRY(entry, end) ( \
- (!entry) || (unsigned long)entry + sizeof(*entry) > end || \
- ((acpi_table_entry_header *)entry)->length != sizeof(*entry))
-
-#define PREFIX "ACPI: "
-
-#ifdef CONFIG_ACPI_PCI
-int acpi_noirq __initdata; /* skip ACPI IRQ initialization */
-int acpi_pci_disabled __initdata; /* skip ACPI PCI scan and IRQ initialization
*/
-#else
-int acpi_noirq __initdata = 1;
-int acpi_pci_disabled __initdata = 1;
-#endif
-int acpi_ht __initdata = 1; /* enable HT */
-
-int acpi_lapic;
-int acpi_ioapic;
-int acpi_strict;
-EXPORT_SYMBOL(acpi_strict);
-
-acpi_interrupt_flags acpi_sci_flags __initdata;
-int acpi_sci_override_gsi __initdata;
-int acpi_skip_timer_override __initdata;
-
-#ifdef CONFIG_X86_LOCAL_APIC
-static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
-#endif
-
-#ifndef __HAVE_ARCH_CMPXCHG
-#warning ACPI uses CMPXCHG, i486 and later hardware
-#endif
-
-#define MAX_MADT_ENTRIES 256
-u8 x86_acpiid_to_apicid[MAX_MADT_ENTRIES] =
- { [0 ... MAX_MADT_ENTRIES-1] = 0xff };
-EXPORT_SYMBOL(x86_acpiid_to_apicid);
-
-/* --------------------------------------------------------------------------
- Boot-time Configuration
- --------------------------------------------------------------------------
*/
-
-/*
- * The default interrupt routing model is PIC (8259). This gets
- * overriden if IOAPICs are enumerated (below).
- */
-enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC;
-
-#if defined(CONFIG_X86_64) && !defined(CONFIG_XEN)
-
-/* rely on all ACPI tables being in the direct mapping */
-char *__acpi_map_table(unsigned long phys_addr, unsigned long size)
-{
- if (!phys_addr || !size)
- return NULL;
-
- if (phys_addr < (end_pfn_map << PAGE_SHIFT))
- return __va(phys_addr);
-
- return NULL;
-}
-
-#else
-
-/*
- * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END,
- * to map the target physical address. The problem is that set_fixmap()
- * provides a single page, and it is possible that the page is not
- * sufficient.
- * By using this area, we can map up to MAX_IO_APICS pages temporarily,
- * i.e. until the next __va_range() call.
- *
- * Important Safety Note: The fixed I/O APIC page numbers are *subtracted*
- * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and
- * count idx down while incrementing the phys address.
- */
-char *__acpi_map_table(unsigned long phys, unsigned long size)
-{
- unsigned long base, offset, mapped_size;
- int idx;
-
-#ifndef CONFIG_XEN
- if (phys + size < 8*1024*1024)
- return __va(phys);
-#endif
-
- offset = phys & (PAGE_SIZE - 1);
- mapped_size = PAGE_SIZE - offset;
- set_fixmap(FIX_ACPI_END, phys);
- base = fix_to_virt(FIX_ACPI_END);
-
- /*
- * Most cases can be covered by the below.
- */
- idx = FIX_ACPI_END;
- while (mapped_size < size) {
- if (--idx < FIX_ACPI_BEGIN)
- return NULL; /* cannot handle this */
- phys += PAGE_SIZE;
- set_fixmap(idx, phys);
- mapped_size += PAGE_SIZE;
- }
-
- return ((unsigned char *) base + offset);
-}
-#endif
-
-#ifdef CONFIG_PCI_MMCONFIG
-static int __init acpi_parse_mcfg(unsigned long phys_addr, unsigned long size)
-{
- struct acpi_table_mcfg *mcfg;
-
- if (!phys_addr || !size)
- return -EINVAL;
-
- mcfg = (struct acpi_table_mcfg *) __acpi_map_table(phys_addr, size);
- if (!mcfg) {
- printk(KERN_WARNING PREFIX "Unable to map MCFG\n");
- return -ENODEV;
- }
-
- if (mcfg->base_reserved) {
- printk(KERN_ERR PREFIX "MMCONFIG not in low 4GB of memory\n");
- return -ENODEV;
- }
-
- pci_mmcfg_base_addr = mcfg->base_address;
-
- return 0;
-}
-#else
-#define acpi_parse_mcfg NULL
-#endif /* !CONFIG_PCI_MMCONFIG */
-
-#ifdef CONFIG_X86_LOCAL_APIC
-static int __init
-acpi_parse_madt (
- unsigned long phys_addr,
- unsigned long size)
-{
- struct acpi_table_madt *madt = NULL;
-
- if (!phys_addr || !size)
- return -EINVAL;
-
- madt = (struct acpi_table_madt *) __acpi_map_table(phys_addr, size);
- if (!madt) {
- printk(KERN_WARNING PREFIX "Unable to map MADT\n");
- return -ENODEV;
- }
-
- if (madt->lapic_address) {
- acpi_lapic_addr = (u64) madt->lapic_address;
-
- printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n",
- madt->lapic_address);
- }
-
- acpi_madt_oem_check(madt->header.oem_id, madt->header.oem_table_id);
-
- return 0;
-}
-
-
-static int __init
-acpi_parse_lapic (
- acpi_table_entry_header *header, const unsigned long end)
-{
- struct acpi_table_lapic *processor = NULL;
-
- processor = (struct acpi_table_lapic*) header;
-
- if (BAD_MADT_ENTRY(processor, end))
- return -EINVAL;
-
- acpi_table_print_madt_entry(header);
-
- /* no utility in registering a disabled processor */
- if (processor->flags.enabled == 0)
- return 0;
-
- x86_acpiid_to_apicid[processor->acpi_id] = processor->id;
-
- mp_register_lapic (
- processor->id, /* APIC ID */
- processor->flags.enabled); /* Enabled? */
-
- return 0;
-}
-
-static int __init
-acpi_parse_lapic_addr_ovr (
- acpi_table_entry_header *header, const unsigned long end)
-{
- struct acpi_table_lapic_addr_ovr *lapic_addr_ovr = NULL;
-
- lapic_addr_ovr = (struct acpi_table_lapic_addr_ovr*) header;
-
- if (BAD_MADT_ENTRY(lapic_addr_ovr, end))
- return -EINVAL;
-
- acpi_lapic_addr = lapic_addr_ovr->address;
-
- return 0;
-}
-
-static int __init
-acpi_parse_lapic_nmi (
- acpi_table_entry_header *header, const unsigned long end)
-{
- struct acpi_table_lapic_nmi *lapic_nmi = NULL;
-
- lapic_nmi = (struct acpi_table_lapic_nmi*) header;
-
- if (BAD_MADT_ENTRY(lapic_nmi, end))
- return -EINVAL;
-
- acpi_table_print_madt_entry(header);
-
- if (lapic_nmi->lint != 1)
- printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
-
- return 0;
-}
-
-
-#endif /*CONFIG_X86_LOCAL_APIC*/
-
-#if defined(CONFIG_X86_IO_APIC) && defined(CONFIG_ACPI_INTERPRETER)
-
-static int __init
-acpi_parse_ioapic (
- acpi_table_entry_header *header, const unsigned long end)
-{
- struct acpi_table_ioapic *ioapic = NULL;
-
- ioapic = (struct acpi_table_ioapic*) header;
-
- if (BAD_MADT_ENTRY(ioapic, end))
- return -EINVAL;
-
- acpi_table_print_madt_entry(header);
-
- mp_register_ioapic (
- ioapic->id,
- ioapic->address,
- ioapic->global_irq_base);
-
- return 0;
-}
-
-/*
- * Parse Interrupt Source Override for the ACPI SCI
- */
-static void
-acpi_sci_ioapic_setup(u32 gsi, u16 polarity, u16 trigger)
-{
- if (trigger == 0) /* compatible SCI trigger is level */
- trigger = 3;
-
- if (polarity == 0) /* compatible SCI polarity is low */
- polarity = 3;
-
- /* Command-line over-ride via acpi_sci= */
- if (acpi_sci_flags.trigger)
- trigger = acpi_sci_flags.trigger;
-
- if (acpi_sci_flags.polarity)
- polarity = acpi_sci_flags.polarity;
-
- /*
- * mp_config_acpi_legacy_irqs() already setup IRQs < 16
- * If GSI is < 16, this will update its flags,
- * else it will create a new mp_irqs[] entry.
- */
- mp_override_legacy_irq(gsi, polarity, trigger, gsi);
-
- /*
- * stash over-ride to indicate we've been here
- * and for later update of acpi_fadt
- */
- acpi_sci_override_gsi = gsi;
- return;
-}
-
-static int __init
-acpi_parse_int_src_ovr (
- acpi_table_entry_header *header, const unsigned long end)
-{
- struct acpi_table_int_src_ovr *intsrc = NULL;
-
- intsrc = (struct acpi_table_int_src_ovr*) header;
-
- if (BAD_MADT_ENTRY(intsrc, end))
- return -EINVAL;
-
- acpi_table_print_madt_entry(header);
-
- if (intsrc->bus_irq == acpi_fadt.sci_int) {
- acpi_sci_ioapic_setup(intsrc->global_irq,
- intsrc->flags.polarity, intsrc->flags.trigger);
- return 0;
- }
-
- if (acpi_skip_timer_override &&
- intsrc->bus_irq == 0 && intsrc->global_irq == 2) {
- printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n");
- return 0;
- }
-
- mp_override_legacy_irq (
- intsrc->bus_irq,
- intsrc->flags.polarity,
- intsrc->flags.trigger,
- intsrc->global_irq);
-
- return 0;
-}
-
-
-static int __init
-acpi_parse_nmi_src (
- acpi_table_entry_header *header, const unsigned long end)
-{
- struct acpi_table_nmi_src *nmi_src = NULL;
-
- nmi_src = (struct acpi_table_nmi_src*) header;
-
- if (BAD_MADT_ENTRY(nmi_src, end))
- return -EINVAL;
-
- acpi_table_print_madt_entry(header);
-
- /* TBD: Support nimsrc entries? */
-
- return 0;
-}
-
-#endif /* CONFIG_X86_IO_APIC */
-
-#ifdef CONFIG_ACPI_BUS
-
-/*
- * acpi_pic_sci_set_trigger()
- *
- * use ELCR to set PIC-mode trigger type for SCI
- *
- * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
- * it may require Edge Trigger -- use "acpi_sci=edge"
- *
- * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
- * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
- * ECLR1 is IRQ's 0-7 (IRQ 0, 1, 2 must be 0)
- * ECLR2 is IRQ's 8-15 (IRQ 8, 13 must be 0)
- */
-
-void __init
-acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
-{
- unsigned int mask = 1 << irq;
- unsigned int old, new;
-
- /* Real old ELCR mask */
- old = inb(0x4d0) | (inb(0x4d1) << 8);
-
- /*
- * If we use ACPI to set PCI irq's, then we should clear ELCR
- * since we will set it correctly as we enable the PCI irq
- * routing.
- */
- new = acpi_noirq ? old : 0;
-
- /*
- * Update SCI information in the ELCR, it isn't in the PCI
- * routing tables..
- */
- switch (trigger) {
- case 1: /* Edge - clear */
- new &= ~mask;
- break;
- case 3: /* Level - set */
- new |= mask;
- break;
- }
-
- if (old == new)
- return;
-
- printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
- outb(new, 0x4d0);
- outb(new >> 8, 0x4d1);
-}
-
-
-#endif /* CONFIG_ACPI_BUS */
-
-int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
-{
-#ifdef CONFIG_X86_IO_APIC
- if (use_pci_vector() && !platform_legacy_irq(gsi))
- *irq = IO_APIC_VECTOR(gsi);
- else
-#endif
- *irq = gsi;
- return 0;
-}
-
-unsigned int acpi_register_gsi(u32 gsi, int edge_level, int active_high_low)
-{
- unsigned int irq;
- unsigned int plat_gsi = gsi;
-
-#ifdef CONFIG_X86_IO_APIC
- if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) {
- plat_gsi = mp_register_gsi(gsi, edge_level, active_high_low);
- }
-#endif
- acpi_gsi_to_irq(plat_gsi, &irq);
- return irq;
-}
-EXPORT_SYMBOL(acpi_register_gsi);
-
-/*
- * ACPI based hotplug support for CPU
- */
-#ifdef CONFIG_ACPI_HOTPLUG_CPU
-int
-acpi_map_lsapic(acpi_handle handle, int *pcpu)
-{
- /* TBD */
- return -EINVAL;
-}
-EXPORT_SYMBOL(acpi_map_lsapic);
-
-
-int
-acpi_unmap_lsapic(int cpu)
-{
- /* TBD */
- return -EINVAL;
-}
-EXPORT_SYMBOL(acpi_unmap_lsapic);
-#endif /* CONFIG_ACPI_HOTPLUG_CPU */
-
-static unsigned long __init
-acpi_scan_rsdp (
- unsigned long start,
- unsigned long length)
-{
- unsigned long offset = 0;
- unsigned long sig_len = sizeof("RSD PTR ") - 1;
- unsigned long vstart = (unsigned long)isa_bus_to_virt(start);
-
- /*
- * Scan all 16-byte boundaries of the physical memory region for the
- * RSDP signature.
- */
- for (offset = 0; offset < length; offset += 16) {
- if (strncmp((char *) (vstart + offset), "RSD PTR ", sig_len))
- continue;
- return (start + offset);
- }
-
- return 0;
-}
-
-static int __init acpi_parse_sbf(unsigned long phys_addr, unsigned long size)
-{
- struct acpi_table_sbf *sb;
-
- if (!phys_addr || !size)
- return -EINVAL;
-
- sb = (struct acpi_table_sbf *) __acpi_map_table(phys_addr, size);
- if (!sb) {
- printk(KERN_WARNING PREFIX "Unable to map SBF\n");
- return -ENODEV;
- }
-
- sbf_port = sb->sbf_cmos; /* Save CMOS port */
-
- return 0;
-}
-
-
-#ifdef CONFIG_HPET_TIMER
-
-static int __init acpi_parse_hpet(unsigned long phys, unsigned long size)
-{
- struct acpi_table_hpet *hpet_tbl;
-
- if (!phys || !size)
- return -EINVAL;
-
- hpet_tbl = (struct acpi_table_hpet *) __acpi_map_table(phys, size);
- if (!hpet_tbl) {
- printk(KERN_WARNING PREFIX "Unable to map HPET\n");
- return -ENODEV;
- }
-
- if (hpet_tbl->addr.space_id != ACPI_SPACE_MEM) {
- printk(KERN_WARNING PREFIX "HPET timers must be located in "
- "memory.\n");
- return -1;
- }
-
-#ifdef CONFIG_X86_64
- vxtime.hpet_address = hpet_tbl->addr.addrl |
- ((long) hpet_tbl->addr.addrh << 32);
-
- printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
- hpet_tbl->id, vxtime.hpet_address);
-#else /* X86 */
- {
- extern unsigned long hpet_address;
-
- hpet_address = hpet_tbl->addr.addrl;
- printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
- hpet_tbl->id, hpet_address);
- }
-#endif /* X86 */
-
- return 0;
-}
-#else
-#define acpi_parse_hpet NULL
-#endif
-
-#ifdef CONFIG_X86_PM_TIMER
-extern u32 pmtmr_ioport;
-#endif
-
-static int __init acpi_parse_fadt(unsigned long phys, unsigned long size)
-{
- struct fadt_descriptor_rev2 *fadt = NULL;
-
- fadt = (struct fadt_descriptor_rev2*) __acpi_map_table(phys,size);
- if(!fadt) {
- printk(KERN_WARNING PREFIX "Unable to map FADT\n");
- return 0;
- }
-
-#ifdef CONFIG_ACPI_INTERPRETER
- /* initialize sci_int early for INT_SRC_OVR MADT parsing */
- acpi_fadt.sci_int = fadt->sci_int;
-#endif
-
-#ifdef CONFIG_X86_PM_TIMER
- /* detect the location of the ACPI PM Timer */
- if (fadt->revision >= FADT2_REVISION_ID) {
- /* FADT rev. 2 */
- if (fadt->xpm_tmr_blk.address_space_id !=
ACPI_ADR_SPACE_SYSTEM_IO)
- return 0;
-
- pmtmr_ioport = fadt->xpm_tmr_blk.address;
- } else {
- /* FADT rev. 1 */
- pmtmr_ioport = fadt->V1_pm_tmr_blk;
- }
- if (pmtmr_ioport)
- printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
pmtmr_ioport);
-#endif
- return 0;
-}
-
-
-unsigned long __init
-acpi_find_rsdp (void)
-{
- unsigned long rsdp_phys = 0;
-
- if (efi_enabled) {
- if (efi.acpi20)
- return __pa(efi.acpi20);
- else if (efi.acpi)
- return __pa(efi.acpi);
- }
- /*
- * Scan memory looking for the RSDP signature. First search EBDA (low
- * memory) paragraphs and then search upper memory (E0000-FFFFF).
- */
- rsdp_phys = acpi_scan_rsdp (0, 0x400);
- if (!rsdp_phys)
- rsdp_phys = acpi_scan_rsdp (0xE0000, 0x20000);
-
- set_fixmap(FIX_ACPI_RSDP_PAGE, rsdp_phys);
-
- return rsdp_phys;
-}
-
-#ifdef CONFIG_X86_LOCAL_APIC
-/*
- * Parse LAPIC entries in MADT
- * returns 0 on success, < 0 on error
- */
-static int __init
-acpi_parse_madt_lapic_entries(void)
-{
- int count;
-
- /*
- * Note that the LAPIC address is obtained from the MADT (32-bit value)
- * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
- */
-
- count = acpi_table_parse_madt(ACPI_MADT_LAPIC_ADDR_OVR,
acpi_parse_lapic_addr_ovr, 0);
- if (count < 0) {
- printk(KERN_ERR PREFIX "Error parsing LAPIC address override
entry\n");
- return count;
- }
-
- mp_register_lapic_address(acpi_lapic_addr);
-
- count = acpi_table_parse_madt(ACPI_MADT_LAPIC, acpi_parse_lapic,
- MAX_APICS);
- if (!count) {
- printk(KERN_ERR PREFIX "No LAPIC entries present\n");
- /* TBD: Cleanup to allow fallback to MPS */
- return -ENODEV;
- }
- else if (count < 0) {
- printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
- /* TBD: Cleanup to allow fallback to MPS */
- return count;
- }
-
- count = acpi_table_parse_madt(ACPI_MADT_LAPIC_NMI,
acpi_parse_lapic_nmi, 0);
- if (count < 0) {
- printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
- /* TBD: Cleanup to allow fallback to MPS */
- return count;
- }
- return 0;
-}
-#endif /* CONFIG_X86_LOCAL_APIC */
-
-#if defined(CONFIG_X86_IO_APIC) && defined(CONFIG_ACPI_INTERPRETER)
-/*
- * Parse IOAPIC related entries in MADT
- * returns 0 on success, < 0 on error
- */
-static int __init
-acpi_parse_madt_ioapic_entries(void)
-{
- int count;
-
- /*
- * ACPI interpreter is required to complete interrupt setup,
- * so if it is off, don't enumerate the io-apics with ACPI.
- * If MPS is present, it will handle them,
- * otherwise the system will stay in PIC mode
- */
- if (acpi_disabled || acpi_noirq) {
- return -ENODEV;
- }
-
- /*
- * if "noapic" boot option, don't look for IO-APICs
- */
- if (skip_ioapic_setup) {
- printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
- "due to 'noapic' option.\n");
- return -ENODEV;
- }
-
- count = acpi_table_parse_madt(ACPI_MADT_IOAPIC, acpi_parse_ioapic,
MAX_IO_APICS);
- if (!count) {
- printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
- return -ENODEV;
- }
- else if (count < 0) {
- printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
- return count;
- }
-
- count = acpi_table_parse_madt(ACPI_MADT_INT_SRC_OVR,
acpi_parse_int_src_ovr, NR_IRQ_VECTORS);
- if (count < 0) {
- printk(KERN_ERR PREFIX "Error parsing interrupt source
overrides entry\n");
- /* TBD: Cleanup to allow fallback to MPS */
- return count;
- }
-
- /*
- * If BIOS did not supply an INT_SRC_OVR for the SCI
- * pretend we got one so we can set the SCI flags.
- */
- if (!acpi_sci_override_gsi)
- acpi_sci_ioapic_setup(acpi_fadt.sci_int, 0, 0);
-
- /* Fill in identity legacy mapings where no override */
- mp_config_acpi_legacy_irqs();
-
- count = acpi_table_parse_madt(ACPI_MADT_NMI_SRC, acpi_parse_nmi_src,
NR_IRQ_VECTORS);
- if (count < 0) {
- printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
- /* TBD: Cleanup to allow fallback to MPS */
- return count;
- }
-
- return 0;
-}
-#else
-static inline int acpi_parse_madt_ioapic_entries(void)
-{
- return -1;
-}
-#endif /* !(CONFIG_X86_IO_APIC && CONFIG_ACPI_INTERPRETER) */
-
-
-static void __init
-acpi_process_madt(void)
-{
-#ifdef CONFIG_X86_LOCAL_APIC
- int count, error;
-
- count = acpi_table_parse(ACPI_APIC, acpi_parse_madt);
- if (count >= 1) {
-
- /*
- * Parse MADT LAPIC entries
- */
- error = acpi_parse_madt_lapic_entries();
- if (!error) {
- acpi_lapic = 1;
-
- /*
- * Parse MADT IO-APIC entries
- */
- error = acpi_parse_madt_ioapic_entries();
- if (!error) {
- acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
- acpi_irq_balance_set(NULL);
- acpi_ioapic = 1;
-
- smp_found_config = 1;
- clustered_apic_check();
- }
- }
- if (error == -EINVAL) {
- /*
- * Dell Precision Workstation 410, 610 come here.
- */
- printk(KERN_ERR PREFIX "Invalid BIOS MADT, disabling
ACPI\n");
- disable_acpi();
- }
- }
-#endif
- return;
-}
-
-/*
- * acpi_boot_table_init() and acpi_boot_init()
- * called from setup_arch(), always.
- * 1. checksums all tables
- * 2. enumerates lapics
- * 3. enumerates io-apics
- *
- * acpi_table_init() is separate to allow reading SRAT without
- * other side effects.
- *
- * side effects of acpi_boot_init:
- * acpi_lapic = 1 if LAPIC found
- * acpi_ioapic = 1 if IOAPIC found
- * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
- * if acpi_blacklisted() acpi_disabled = 1;
- * acpi_irq_model=...
- * ...
- *
- * return value: (currently ignored)
- * 0: success
- * !0: failure
- */
-
-int __init
-acpi_boot_table_init(void)
-{
- int error;
-
- /*
- * If acpi_disabled, bail out
- * One exception: acpi=ht continues far enough to enumerate LAPICs
- */
- if (acpi_disabled && !acpi_ht)
- return 1;
-
- /*
- * Initialize the ACPI boot-time table parser.
- */
- error = acpi_table_init();
- if (error) {
- disable_acpi();
- return error;
- }
-
-#ifdef __i386__
- check_acpi_pci();
-#endif
-
- acpi_table_parse(ACPI_BOOT, acpi_parse_sbf);
-
- /*
- * blacklist may disable ACPI entirely
- */
- error = acpi_blacklisted();
- if (error) {
- extern int acpi_force;
-
- if (acpi_force) {
- printk(KERN_WARNING PREFIX "acpi=force override\n");
- } else {
- printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
- disable_acpi();
- return error;
- }
- }
-
- return 0;
-}
-
-
-int __init acpi_boot_init(void)
-{
- /*
- * If acpi_disabled, bail out
- * One exception: acpi=ht continues far enough to enumerate LAPICs
- */
- if (acpi_disabled && !acpi_ht)
- return 1;
-
- acpi_table_parse(ACPI_BOOT, acpi_parse_sbf);
-
- /*
- * set sci_int and PM timer address
- */
- acpi_table_parse(ACPI_FADT, acpi_parse_fadt);
-
- /*
- * Process the Multiple APIC Description Table (MADT), if present
- */
- acpi_process_madt();
-
- acpi_table_parse(ACPI_HPET, acpi_parse_hpet);
- acpi_table_parse(ACPI_MCFG, acpi_parse_mcfg);
-
- return 0;
-}
-
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/apic.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/apic.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,83 +0,0 @@
-/*
- * Local APIC handling, local APIC timers
- *
- * (c) 1999, 2000 Ingo Molnar <mingo@xxxxxxxxxx>
- *
- * Fixes
- * Maciej W. Rozycki : Bits for genuine 82489DX APICs;
- * thanks to Eric Gilmore
- * and Rolf G. Tews
- * for testing these extensively.
- * Maciej W. Rozycki : Various updates and fixes.
- * Mikael Pettersson : Power Management for UP-APIC.
- * Pavel Machek and
- * Mikael Pettersson : PM converted to driver model.
- */
-
-#include <linux/config.h>
-#include <linux/init.h>
-
-#include <linux/mm.h>
-#include <linux/irq.h>
-#include <linux/delay.h>
-#include <linux/bootmem.h>
-#include <linux/smp_lock.h>
-#include <linux/interrupt.h>
-#include <linux/mc146818rtc.h>
-#include <linux/kernel_stat.h>
-#include <linux/sysdev.h>
-
-#include <asm/atomic.h>
-#include <asm/smp.h>
-#include <asm/mtrr.h>
-#include <asm/mpspec.h>
-#include <asm/desc.h>
-#include <asm/arch_hooks.h>
-#include <asm/hpet.h>
-
-#include <mach_apic.h>
-
-#include "io_ports.h"
-
-/*
- * Debug level
- */
-int apic_verbosity;
-
-int get_physical_broadcast(void)
-{
- return 0xff;
-}
-
-/*
- * 'what should we do if we get a hw irq event on an illegal vector'.
- * each architecture has to answer this themselves.
- */
-void ack_bad_irq(unsigned int irq)
-{
- printk("unexpected IRQ trap at vector %02x\n", irq);
- /*
- * Currently unexpected vectors happen only on SMP and APIC.
- * We _must_ ack these because every local APIC has only N
- * irq slots per priority level, and a 'hanging, unacked' IRQ
- * holds up an irq slot - in excessive cases (when multiple
- * unexpected vectors occur) that might lock up the APIC
- * completely.
- */
- ack_APIC_irq();
-}
-
-/*
- * This initializes the IO-APIC and APIC hardware if this is
- * a UP kernel.
- */
-int __init APIC_init_uniprocessor (void)
-{
-#ifdef CONFIG_X86_IO_APIC
- if (smp_found_config)
- if (!skip_ioapic_setup && nr_ioapics)
- setup_IO_APIC();
-#endif
-
- return 0;
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/cpu/Makefile
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/cpu/Makefile Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,31 +0,0 @@
-#
-# Makefile for x86-compatible CPU details and quirks
-#
-
-CFLAGS += -Iarch/i386/kernel/cpu
-
-obj-y := common.o
-c-obj-y += proc.o
-
-c-obj-y += amd.o
-c-obj-y += cyrix.o
-c-obj-y += centaur.o
-c-obj-y += transmeta.o
-c-obj-y += intel.o intel_cacheinfo.o
-c-obj-y += rise.o
-c-obj-y += nexgen.o
-c-obj-y += umc.o
-
-#obj-$(CONFIG_X86_MCE) += ../../../../i386/kernel/cpu/mcheck/
-
-obj-$(CONFIG_MTRR) += mtrr/
-#obj-$(CONFIG_CPU_FREQ) += ../../../../i386/kernel/cpu/cpufreq/
-
-c-link :=
-
-$(patsubst %.o,$(obj)/%.c,$(c-obj-y) $(c-link)):
- @ln -fsn $(srctree)/arch/i386/kernel/cpu/$(notdir $@) $@
-
-obj-y += $(c-obj-y)
-
-clean-files += $(patsubst %.o,%.c,$(c-obj-y) $(c-obj-) $(c-link))
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/cpu/common.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/cpu/common.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,642 +0,0 @@
-#include <linux/init.h>
-#include <linux/string.h>
-#include <linux/delay.h>
-#include <linux/smp.h>
-#include <linux/module.h>
-#include <linux/percpu.h>
-#include <asm/semaphore.h>
-#include <asm/processor.h>
-#include <asm/i387.h>
-#include <asm/msr.h>
-#include <asm/io.h>
-#include <asm/mmu_context.h>
-#ifdef CONFIG_X86_LOCAL_APIC
-#include <asm/mpspec.h>
-#include <asm/apic.h>
-#include <mach_apic.h>
-#endif
-#include <asm-xen/hypervisor.h>
-
-#include "cpu.h"
-
-DEFINE_PER_CPU(struct desc_struct, cpu_gdt_table[GDT_ENTRIES]);
-EXPORT_PER_CPU_SYMBOL(cpu_gdt_table);
-
-static int cachesize_override __initdata = -1;
-static int disable_x86_fxsr __initdata = 0;
-static int disable_x86_serial_nr __initdata = 1;
-
-struct cpu_dev * cpu_devs[X86_VENDOR_NUM] = {};
-
-extern void mcheck_init(struct cpuinfo_x86 *c);
-
-extern void machine_specific_modify_cpu_capabilities(struct cpuinfo_x86 *c);
-
-extern int disable_pse;
-
-static void default_init(struct cpuinfo_x86 * c)
-{
- /* Not much we can do here... */
- /* Check if at least it has cpuid */
- if (c->cpuid_level == -1) {
- /* No cpuid. It must be an ancient CPU */
- if (c->x86 == 4)
- strcpy(c->x86_model_id, "486");
- else if (c->x86 == 3)
- strcpy(c->x86_model_id, "386");
- }
-}
-
-static struct cpu_dev default_cpu = {
- .c_init = default_init,
-};
-static struct cpu_dev * this_cpu = &default_cpu;
-
-static int __init cachesize_setup(char *str)
-{
- get_option (&str, &cachesize_override);
- return 1;
-}
-__setup("cachesize=", cachesize_setup);
-
-int __init get_model_name(struct cpuinfo_x86 *c)
-{
- unsigned int *v;
- char *p, *q;
-
- if (cpuid_eax(0x80000000) < 0x80000004)
- return 0;
-
- v = (unsigned int *) c->x86_model_id;
- cpuid(0x80000002, &v[0], &v[1], &v[2], &v[3]);
- cpuid(0x80000003, &v[4], &v[5], &v[6], &v[7]);
- cpuid(0x80000004, &v[8], &v[9], &v[10], &v[11]);
- c->x86_model_id[48] = 0;
-
- /* Intel chips right-justify this string for some dumb reason;
- undo that brain damage */
- p = q = &c->x86_model_id[0];
- while ( *p == ' ' )
- p++;
- if ( p != q ) {
- while ( *p )
- *q++ = *p++;
- while ( q <= &c->x86_model_id[48] )
- *q++ = '\0'; /* Zero-pad the rest */
- }
-
- return 1;
-}
-
-
-void __init display_cacheinfo(struct cpuinfo_x86 *c)
-{
- unsigned int n, dummy, ecx, edx, l2size;
-
- n = cpuid_eax(0x80000000);
-
- if (n >= 0x80000005) {
- cpuid(0x80000005, &dummy, &dummy, &ecx, &edx);
- printk(KERN_INFO "CPU: L1 I Cache: %dK (%d bytes/line), D cache
%dK (%d bytes/line)\n",
- edx>>24, edx&0xFF, ecx>>24, ecx&0xFF);
- c->x86_cache_size=(ecx>>24)+(edx>>24);
- }
-
- if (n < 0x80000006) /* Some chips just has a large L1. */
- return;
-
- ecx = cpuid_ecx(0x80000006);
- l2size = ecx >> 16;
-
- /* do processor-specific cache resizing */
- if (this_cpu->c_size_cache)
- l2size = this_cpu->c_size_cache(c,l2size);
-
- /* Allow user to override all this if necessary. */
- if (cachesize_override != -1)
- l2size = cachesize_override;
-
- if ( l2size == 0 )
- return; /* Again, no L2 cache is possible */
-
- c->x86_cache_size = l2size;
-
- printk(KERN_INFO "CPU: L2 Cache: %dK (%d bytes/line)\n",
- l2size, ecx & 0xFF);
-}
-
-/* Naming convention should be: <Name> [(<Codename>)] */
-/* This table only is used unless init_<vendor>() below doesn't set it; */
-/* in particular, if CPUID levels 0x80000002..4 are supported, this isn't used
*/
-
-/* Look up CPU names by table lookup. */
-static char __init *table_lookup_model(struct cpuinfo_x86 *c)
-{
- struct cpu_model_info *info;
-
- if ( c->x86_model >= 16 )
- return NULL; /* Range check */
-
- if (!this_cpu)
- return NULL;
-
- info = this_cpu->c_models;
-
- while (info && info->family) {
- if (info->family == c->x86)
- return info->model_names[c->x86_model];
- info++;
- }
- return NULL; /* Not found */
-}
-
-
-void __init get_cpu_vendor(struct cpuinfo_x86 *c, int early)
-{
- char *v = c->x86_vendor_id;
- int i;
-
- for (i = 0; i < X86_VENDOR_NUM; i++) {
- if (cpu_devs[i]) {
- if (!strcmp(v,cpu_devs[i]->c_ident[0]) ||
- (cpu_devs[i]->c_ident[1] &&
- !strcmp(v,cpu_devs[i]->c_ident[1]))) {
- c->x86_vendor = i;
- if (!early)
- this_cpu = cpu_devs[i];
- break;
- }
- }
- }
-}
-
-
-static int __init x86_fxsr_setup(char * s)
-{
- disable_x86_fxsr = 1;
- return 1;
-}
-__setup("nofxsr", x86_fxsr_setup);
-
-
-/* Standard macro to see if a specific flag is changeable */
-static inline int flag_is_changeable_p(u32 flag)
-{
- u32 f1, f2;
-
- asm("pushfl\n\t"
- "pushfl\n\t"
- "popl %0\n\t"
- "movl %0,%1\n\t"
- "xorl %2,%0\n\t"
- "pushl %0\n\t"
- "popfl\n\t"
- "pushfl\n\t"
- "popl %0\n\t"
- "popfl\n\t"
- : "=&r" (f1), "=&r" (f2)
- : "ir" (flag));
-
- return ((f1^f2) & flag) != 0;
-}
-
-
-/* Probe for the CPUID instruction */
-int __init have_cpuid_p(void)
-{
- return flag_is_changeable_p(X86_EFLAGS_ID);
-}
-
-/* Do minimum CPU detection early.
- Fields really needed: vendor, cpuid_level, family, model, mask, cache
alignment.
- The others are not touched to avoid unwanted side effects. */
-void __init early_cpu_detect(void)
-{
- struct cpuinfo_x86 *c = &boot_cpu_data;
-
- c->x86_cache_alignment = 32;
-
- if (!have_cpuid_p())
- return;
-
- /* Get vendor name */
- cpuid(0x00000000, &c->cpuid_level,
- (int *)&c->x86_vendor_id[0],
- (int *)&c->x86_vendor_id[8],
- (int *)&c->x86_vendor_id[4]);
-
- get_cpu_vendor(c, 1);
-
- c->x86 = 4;
- if (c->cpuid_level >= 0x00000001) {
- u32 junk, tfms, cap0, misc;
- cpuid(0x00000001, &tfms, &misc, &junk, &cap0);
- c->x86 = (tfms >> 8) & 15;
- c->x86_model = (tfms >> 4) & 15;
- if (c->x86 == 0xf) {
- c->x86 += (tfms >> 20) & 0xff;
- c->x86_model += ((tfms >> 16) & 0xF) << 4;
- }
- c->x86_mask = tfms & 15;
- if (cap0 & (1<<19))
- c->x86_cache_alignment = ((misc >> 8) & 0xff) * 8;
- }
-
- early_intel_workaround(c);
-}
-
-void __init generic_identify(struct cpuinfo_x86 * c)
-{
- u32 tfms, xlvl;
- int junk;
-
- if (have_cpuid_p()) {
- /* Get vendor name */
- cpuid(0x00000000, &c->cpuid_level,
- (int *)&c->x86_vendor_id[0],
- (int *)&c->x86_vendor_id[8],
- (int *)&c->x86_vendor_id[4]);
-
- get_cpu_vendor(c, 0);
- /* Initialize the standard set of capabilities */
- /* Note that the vendor-specific code below might override */
-
- /* Intel-defined flags: level 0x00000001 */
- if ( c->cpuid_level >= 0x00000001 ) {
- u32 capability, excap;
- cpuid(0x00000001, &tfms, &junk, &excap, &capability);
- c->x86_capability[0] = capability;
- c->x86_capability[4] = excap;
- c->x86 = (tfms >> 8) & 15;
- c->x86_model = (tfms >> 4) & 15;
- if (c->x86 == 0xf) {
- c->x86 += (tfms >> 20) & 0xff;
- c->x86_model += ((tfms >> 16) & 0xF) << 4;
- }
- c->x86_mask = tfms & 15;
- } else {
- /* Have CPUID level 0 only - unheard of */
- c->x86 = 4;
- }
-
- /* AMD-defined flags: level 0x80000001 */
- xlvl = cpuid_eax(0x80000000);
- if ( (xlvl & 0xffff0000) == 0x80000000 ) {
- if ( xlvl >= 0x80000001 ) {
- c->x86_capability[1] = cpuid_edx(0x80000001);
- c->x86_capability[6] = cpuid_ecx(0x80000001);
- }
- if ( xlvl >= 0x80000004 )
- get_model_name(c); /* Default name */
- }
- }
-}
-
-static void __init squash_the_stupid_serial_number(struct cpuinfo_x86 *c)
-{
- if (cpu_has(c, X86_FEATURE_PN) && disable_x86_serial_nr ) {
- /* Disable processor serial number */
- unsigned long lo,hi;
- rdmsr(MSR_IA32_BBL_CR_CTL,lo,hi);
- lo |= 0x200000;
- wrmsr(MSR_IA32_BBL_CR_CTL,lo,hi);
- printk(KERN_NOTICE "CPU serial number disabled.\n");
- clear_bit(X86_FEATURE_PN, c->x86_capability);
-
- /* Disabling the serial number may affect the cpuid level */
- c->cpuid_level = cpuid_eax(0);
- }
-}
-
-static int __init x86_serial_nr_setup(char *s)
-{
- disable_x86_serial_nr = 0;
- return 1;
-}
-__setup("serialnumber", x86_serial_nr_setup);
-
-
-
-/*
- * This does the hard work of actually picking apart the CPU stuff...
- */
-void __init identify_cpu(struct cpuinfo_x86 *c)
-{
- int i;
-
- c->loops_per_jiffy = loops_per_jiffy;
- c->x86_cache_size = -1;
- c->x86_vendor = X86_VENDOR_UNKNOWN;
- c->cpuid_level = -1; /* CPUID not detected */
- c->x86_model = c->x86_mask = 0; /* So far unknown... */
- c->x86_vendor_id[0] = '\0'; /* Unset */
- c->x86_model_id[0] = '\0'; /* Unset */
- c->x86_num_cores = 1;
- memset(&c->x86_capability, 0, sizeof c->x86_capability);
-
- if (!have_cpuid_p()) {
- /* First of all, decide if this is a 486 or higher */
- /* It's a 486 if we can modify the AC flag */
- if ( flag_is_changeable_p(X86_EFLAGS_AC) )
- c->x86 = 4;
- else
- c->x86 = 3;
- }
-
- generic_identify(c);
-
- printk(KERN_DEBUG "CPU: After generic identify, caps:");
- for (i = 0; i < NCAPINTS; i++)
- printk(" %08lx", c->x86_capability[i]);
- printk("\n");
-
- if (this_cpu->c_identify) {
- this_cpu->c_identify(c);
-
- printk(KERN_DEBUG "CPU: After vendor identify, caps:");
- for (i = 0; i < NCAPINTS; i++)
- printk(" %08lx", c->x86_capability[i]);
- printk("\n");
- }
-
- /*
- * Vendor-specific initialization. In this section we
- * canonicalize the feature flags, meaning if there are
- * features a certain CPU supports which CPUID doesn't
- * tell us, CPUID claiming incorrect flags, or other bugs,
- * we handle them here.
- *
- * At the end of this section, c->x86_capability better
- * indicate the features this CPU genuinely supports!
- */
- if (this_cpu->c_init)
- this_cpu->c_init(c);
-
- /* Disable the PN if appropriate */
- squash_the_stupid_serial_number(c);
-
- /*
- * The vendor-specific functions might have changed features. Now
- * we do "generic changes."
- */
-
- /* TSC disabled? */
- if ( tsc_disable )
- clear_bit(X86_FEATURE_TSC, c->x86_capability);
-
- /* FXSR disabled? */
- if (disable_x86_fxsr) {
- clear_bit(X86_FEATURE_FXSR, c->x86_capability);
- clear_bit(X86_FEATURE_XMM, c->x86_capability);
- }
-
- if (disable_pse)
- clear_bit(X86_FEATURE_PSE, c->x86_capability);
-
- /* If the model name is still unset, do table lookup. */
- if ( !c->x86_model_id[0] ) {
- char *p;
- p = table_lookup_model(c);
- if ( p )
- strcpy(c->x86_model_id, p);
- else
- /* Last resort... */
- sprintf(c->x86_model_id, "%02x/%02x",
- c->x86_vendor, c->x86_model);
- }
-
- machine_specific_modify_cpu_capabilities(c);
-
- /* Now the feature flags better reflect actual CPU features! */
-
- printk(KERN_DEBUG "CPU: After all inits, caps:");
- for (i = 0; i < NCAPINTS; i++)
- printk(" %08lx", c->x86_capability[i]);
- printk("\n");
-
- /*
- * On SMP, boot_cpu_data holds the common feature set between
- * all CPUs; so make sure that we indicate which features are
- * common between the CPUs. The first time this routine gets
- * executed, c == &boot_cpu_data.
- */
- if ( c != &boot_cpu_data ) {
- /* AND the already accumulated flags with these */
- for ( i = 0 ; i < NCAPINTS ; i++ )
- boot_cpu_data.x86_capability[i] &= c->x86_capability[i];
- }
-
- /* Init Machine Check Exception if available. */
-#ifdef CONFIG_X86_MCE
- mcheck_init(c);
-#endif
-}
-/*
- * Perform early boot up checks for a valid TSC. See
arch/i386/kernel/time.c
- */
-
-void __init dodgy_tsc(void)
-{
- if (( boot_cpu_data.x86_vendor == X86_VENDOR_CYRIX ) ||
- ( boot_cpu_data.x86_vendor == X86_VENDOR_NSC ))
- cpu_devs[X86_VENDOR_CYRIX]->c_init(&boot_cpu_data);
-}
-
-#ifdef CONFIG_X86_HT
-void __init detect_ht(struct cpuinfo_x86 *c)
-{
- u32 eax, ebx, ecx, edx;
- int index_lsb, index_msb, tmp;
- int cpu = smp_processor_id();
-
- if (!cpu_has(c, X86_FEATURE_HT))
- return;
-
- cpuid(1, &eax, &ebx, &ecx, &edx);
- smp_num_siblings = (ebx & 0xff0000) >> 16;
-
- if (smp_num_siblings == 1) {
- printk(KERN_INFO "CPU: Hyper-Threading is disabled\n");
- } else if (smp_num_siblings > 1 ) {
- index_lsb = 0;
- index_msb = 31;
-
- if (smp_num_siblings > NR_CPUS) {
- printk(KERN_WARNING "CPU: Unsupported number of the
siblings %d", smp_num_siblings);
- smp_num_siblings = 1;
- return;
- }
- tmp = smp_num_siblings;
- while ((tmp & 1) == 0) {
- tmp >>=1 ;
- index_lsb++;
- }
- tmp = smp_num_siblings;
- while ((tmp & 0x80000000 ) == 0) {
- tmp <<=1 ;
- index_msb--;
- }
- if (index_lsb != index_msb )
- index_msb++;
- phys_proc_id[cpu] = phys_pkg_id((ebx >> 24) & 0xFF, index_msb);
-
- printk(KERN_INFO "CPU: Physical Processor ID: %d\n",
- phys_proc_id[cpu]);
- }
-}
-#endif
-
-void __init print_cpu_info(struct cpuinfo_x86 *c)
-{
- char *vendor = NULL;
-
- if (c->x86_vendor < X86_VENDOR_NUM)
- vendor = this_cpu->c_vendor;
- else if (c->cpuid_level >= 0)
- vendor = c->x86_vendor_id;
-
- if (vendor && strncmp(c->x86_model_id, vendor, strlen(vendor)))
- printk("%s ", vendor);
-
- if (!c->x86_model_id[0])
- printk("%d86", c->x86);
- else
- printk("%s", c->x86_model_id);
-
- if (c->x86_mask || c->cpuid_level >= 0)
- printk(" stepping %02x\n", c->x86_mask);
- else
- printk("\n");
-}
-
-cpumask_t cpu_initialized __initdata = CPU_MASK_NONE;
-
-/* This is hacky. :)
- * We're emulating future behavior.
- * In the future, the cpu-specific init functions will be called implicitly
- * via the magic of initcalls.
- * They will insert themselves into the cpu_devs structure.
- * Then, when cpu_init() is called, we can just iterate over that array.
- */
-
-extern int intel_cpu_init(void);
-extern int cyrix_init_cpu(void);
-extern int nsc_init_cpu(void);
-extern int amd_init_cpu(void);
-extern int centaur_init_cpu(void);
-extern int transmeta_init_cpu(void);
-extern int rise_init_cpu(void);
-extern int nexgen_init_cpu(void);
-extern int umc_init_cpu(void);
-void early_cpu_detect(void);
-
-void __init early_cpu_init(void)
-{
- intel_cpu_init();
- cyrix_init_cpu();
- nsc_init_cpu();
- amd_init_cpu();
- centaur_init_cpu();
- transmeta_init_cpu();
- rise_init_cpu();
- nexgen_init_cpu();
- umc_init_cpu();
- early_cpu_detect();
-
-#ifdef CONFIG_DEBUG_PAGEALLOC
- /* pse is not compatible with on-the-fly unmapping,
- * disable it even if the cpus claim to support it.
- */
- clear_bit(X86_FEATURE_PSE, boot_cpu_data.x86_capability);
- disable_pse = 1;
-#endif
-}
-
-void __init cpu_gdt_init(struct Xgt_desc_struct *gdt_descr)
-{
- unsigned long frames[16];
- unsigned long va;
- int f;
-
- for (va = gdt_descr->address, f = 0;
- va < gdt_descr->address + gdt_descr->size;
- va += PAGE_SIZE, f++) {
- frames[f] = virt_to_machine(va) >> PAGE_SHIFT;
- make_page_readonly((void *)va);
- }
- if (HYPERVISOR_set_gdt(frames, gdt_descr->size / 8))
- BUG();
- lgdt_finish();
-}
-
-/*
- * cpu_init() initializes state that is per-CPU. Some data is already
- * initialized (naturally) in the bootstrap process, such as the GDT
- * and IDT. We reload them nevertheless, this function acts as a
- * 'CPU state barrier', nothing should get across.
- */
-void __init cpu_init (void)
-{
- int cpu = smp_processor_id();
- struct tss_struct * t = &per_cpu(init_tss, cpu);
- struct thread_struct *thread = ¤t->thread;
-
- if (cpu_test_and_set(cpu, cpu_initialized)) {
- printk(KERN_WARNING "CPU#%d already initialized!\n", cpu);
- for (;;) local_irq_enable();
- }
- printk(KERN_INFO "Initializing CPU#%d\n", cpu);
-
- if (cpu_has_vme || cpu_has_de)
- clear_in_cr4(X86_CR4_VME|X86_CR4_PVI|X86_CR4_TSD|X86_CR4_DE);
- if (tsc_disable && cpu_has_tsc) {
- printk(KERN_NOTICE "Disabling TSC...\n");
- /**** FIX-HPA: DOES THIS REALLY BELONG HERE? ****/
- clear_bit(X86_FEATURE_TSC, boot_cpu_data.x86_capability);
- set_in_cr4(X86_CR4_TSD);
- }
-
- /*
- * Set up the per-thread TLS descriptor cache:
- */
- memcpy(thread->tls_array, &get_cpu_gdt_table(cpu)[GDT_ENTRY_TLS_MIN],
- GDT_ENTRY_TLS_ENTRIES * 8);
-
- cpu_gdt_init(&cpu_gdt_descr[cpu]);
-
- /*
- * Delete NT
- */
- __asm__("pushfl ; andl $0xffffbfff,(%esp) ; popfl");
-
- /*
- * Set up and load the per-CPU TSS and LDT
- */
- atomic_inc(&init_mm.mm_count);
- current->active_mm = &init_mm;
- if (current->mm)
- BUG();
- enter_lazy_tlb(&init_mm, current);
-
- load_esp0(t, thread);
-
- load_LDT(&init_mm.context);
-
- /* Clear %fs and %gs. */
- asm volatile ("xorl %eax, %eax; movl %eax, %fs; movl %eax, %gs");
-
- /* Clear all 6 debug registers: */
-
-#define CD(register) HYPERVISOR_set_debugreg(register, 0)
-
- CD(0); CD(1); CD(2); CD(3); /* no db4 and db5 */; CD(6); CD(7);
-
-#undef CD
-
- /*
- * Force FPU initialization:
- */
- current_thread_info()->status = 0;
- clear_used_math();
- mxcsr_feature_mask_init();
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/cpu/mtrr/Makefile
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/cpu/mtrr/Makefile Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,16 +0,0 @@
-obj-y := main.o
-c-obj-y := if.o
-
-c-link :=
-
-$(patsubst %.o,$(obj)/%.c,$(c-obj-y) $(c-link)): $(obj)/mtrr.h
- @ln -fsn $(srctree)/arch/i386/kernel/cpu/mtrr/$(notdir $@) $@
-
-$(patsubst %.o,$(obj)/%.c,$(obj-y)): $(obj)/mtrr.h
-
-$(obj)/mtrr.h:
- @ln -fsn $(srctree)/arch/i386/kernel/cpu/mtrr/mtrr.h $@
-
-obj-y += $(c-obj-y)
-
-clean-files += $(patsubst %.o,%.c,$(c-obj-y) $(c-obj-) $(c-link))
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/cpu/mtrr/main.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/cpu/mtrr/main.c Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,165 +0,0 @@
-#include <linux/init.h>
-#include <linux/proc_fs.h>
-#include <linux/ctype.h>
-#include <linux/module.h>
-#include <linux/seq_file.h>
-#include <asm/uaccess.h>
-
-#include <asm/mtrr.h>
-#include "mtrr.h"
-
-void generic_get_mtrr(unsigned int reg, unsigned long *base,
- unsigned int *size, mtrr_type * type)
-{
- dom0_op_t op;
-
- op.cmd = DOM0_READ_MEMTYPE;
- op.u.read_memtype.reg = reg;
- (void)HYPERVISOR_dom0_op(&op);
-
- *size = op.u.read_memtype.nr_pfns;
- *base = op.u.read_memtype.pfn;
- *type = op.u.read_memtype.type;
-}
-
-struct mtrr_ops generic_mtrr_ops = {
- .use_intel_if = 1,
- .get = generic_get_mtrr,
-};
-
-struct mtrr_ops *mtrr_if = &generic_mtrr_ops;
-unsigned int num_var_ranges;
-unsigned int *usage_table;
-
-void __init set_num_var_ranges(void)
-{
- dom0_op_t op;
-
- for (num_var_ranges = 0; ; num_var_ranges++) {
- op.cmd = DOM0_READ_MEMTYPE;
- op.u.read_memtype.reg = num_var_ranges;
- if (HYPERVISOR_dom0_op(&op) != 0)
- break;
- }
-}
-
-static void __init init_table(void)
-{
- int i, max;
-
- max = num_var_ranges;
- if ((usage_table = kmalloc(max * sizeof *usage_table, GFP_KERNEL))
- == NULL) {
- printk(KERN_ERR "mtrr: could not allocate\n");
- return;
- }
- for (i = 0; i < max; i++)
- usage_table[i] = 0;
-}
-
-int mtrr_add_page(unsigned long base, unsigned long size,
- unsigned int type, char increment)
-{
- int error;
- dom0_op_t op;
-
- op.cmd = DOM0_ADD_MEMTYPE;
- op.u.add_memtype.pfn = base;
- op.u.add_memtype.nr_pfns = size;
- op.u.add_memtype.type = type;
- if ((error = HYPERVISOR_dom0_op(&op)))
- return error;
-
- if (increment)
- ++usage_table[op.u.add_memtype.reg];
-
- return op.u.add_memtype.reg;
-}
-
-int
-mtrr_add(unsigned long base, unsigned long size, unsigned int type,
- char increment)
-{
- if ((base & (PAGE_SIZE - 1)) || (size & (PAGE_SIZE - 1))) {
- printk(KERN_WARNING "mtrr: size and base must be multiples of 4
kiB\n");
- printk(KERN_DEBUG "mtrr: size: 0x%lx base: 0x%lx\n", size,
base);
- return -EINVAL;
- }
- return mtrr_add_page(base >> PAGE_SHIFT, size >> PAGE_SHIFT, type,
- increment);
-}
-
-int mtrr_del_page(int reg, unsigned long base, unsigned long size)
-{
- int i, max;
- mtrr_type ltype;
- unsigned long lbase;
- unsigned int lsize;
- int error = -EINVAL;
- dom0_op_t op;
-
- max = num_var_ranges;
- if (reg < 0) {
- /* Search for existing MTRR */
- for (i = 0; i < max; ++i) {
- mtrr_if->get(i, &lbase, &lsize, <ype);
- if (lbase == base && lsize == size) {
- reg = i;
- break;
- }
- }
- if (reg < 0) {
- printk(KERN_DEBUG "mtrr: no MTRR for %lx000,%lx000
found\n", base,
- size);
- goto out;
- }
- }
- if (usage_table[reg] < 1) {
- printk(KERN_WARNING "mtrr: reg: %d has count=0\n", reg);
- goto out;
- }
- if (--usage_table[reg] < 1) {
- op.cmd = DOM0_DEL_MEMTYPE;
- op.u.del_memtype.handle = 0;
- op.u.add_memtype.reg = reg;
- (void)HYPERVISOR_dom0_op(&op);
- }
- error = reg;
- out:
- return error;
-}
-
-int
-mtrr_del(int reg, unsigned long base, unsigned long size)
-{
- if ((base & (PAGE_SIZE - 1)) || (size & (PAGE_SIZE - 1))) {
- printk(KERN_INFO "mtrr: size and base must be multiples of 4
kiB\n");
- printk(KERN_DEBUG "mtrr: size: 0x%lx base: 0x%lx\n", size,
base);
- return -EINVAL;
- }
- return mtrr_del_page(reg, base >> PAGE_SHIFT, size >> PAGE_SHIFT);
-}
-
-EXPORT_SYMBOL(mtrr_add);
-EXPORT_SYMBOL(mtrr_del);
-
-static int __init mtrr_init(void)
-{
- struct cpuinfo_x86 *c = &boot_cpu_data;
-
- if (!(xen_start_info.flags & SIF_PRIVILEGED))
- return -ENODEV;
-
- if ((!cpu_has(c, X86_FEATURE_MTRR)) &&
- (!cpu_has(c, X86_FEATURE_K6_MTRR)) &&
- (!cpu_has(c, X86_FEATURE_CYRIX_ARR)) &&
- (!cpu_has(c, X86_FEATURE_CENTAUR_MCR)))
- return -ENODEV;
-
- set_num_var_ranges();
- init_table();
-
- return 0;
-}
-
-subsys_initcall(mtrr_init);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/entry.S
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/entry.S Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,1047 +0,0 @@
-/*
- * linux/arch/i386/entry.S
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- */
-
-/*
- * entry.S contains the system-call and fault low-level handling routines.
- * This also contains the timer-interrupt handler, as well as all interrupts
- * and faults that can result in a task-switch.
- *
- * NOTE: This code handles signal-recognition, which happens every time
- * after a timer-interrupt and after each system call.
- *
- * I changed all the .align's to 4 (16 byte alignment), as that's faster
- * on a 486.
- *
- * Stack layout in 'ret_from_system_call':
- * ptrace needs to have all regs on the stack.
- * if the order here is changed, it needs to be
- * updated in fork.c:copy_process, signal.c:do_signal,
- * ptrace.c and ptrace.h
- *
- * 0(%esp) - %ebx
- * 4(%esp) - %ecx
- * 8(%esp) - %edx
- * C(%esp) - %esi
- * 10(%esp) - %edi
- * 14(%esp) - %ebp
- * 18(%esp) - %eax
- * 1C(%esp) - %ds
- * 20(%esp) - %es
- * 24(%esp) - orig_eax
- * 28(%esp) - %eip
- * 2C(%esp) - %cs
- * 30(%esp) - %eflags
- * 34(%esp) - %oldesp
- * 38(%esp) - %oldss
- *
- * "current" is in register %ebx during any slow entries.
- */
-
-#include <linux/config.h>
-#include <linux/linkage.h>
-#include <asm/thread_info.h>
-#include <asm/errno.h>
-#include <asm/segment.h>
-#include <asm/smp.h>
-#include <asm/page.h>
-#include "irq_vectors.h"
-#include <asm-xen/xen-public/xen.h>
-
-#define nr_syscalls ((syscall_table_size)/4)
-
-EBX = 0x00
-ECX = 0x04
-EDX = 0x08
-ESI = 0x0C
-EDI = 0x10
-EBP = 0x14
-EAX = 0x18
-DS = 0x1C
-ES = 0x20
-ORIG_EAX = 0x24
-EIP = 0x28
-CS = 0x2C
-EVENT_MASK = 0x2E
-EFLAGS = 0x30
-OLDESP = 0x34
-OLDSS = 0x38
-
-CF_MASK = 0x00000001
-TF_MASK = 0x00000100
-IF_MASK = 0x00000200
-DF_MASK = 0x00000400
-NT_MASK = 0x00004000
-VM_MASK = 0x00020000
-
-/* Offsets into shared_info_t. */
-#define evtchn_upcall_pending /* 0 */
-#define evtchn_upcall_mask 1
-
-#define sizeof_vcpu_shift 3
-
-#ifdef CONFIG_SMP
-#define preempt_disable(reg) incl TI_preempt_count(reg)
-#define preempt_enable(reg) decl TI_preempt_count(reg)
-#define XEN_GET_VCPU_INFO(reg) preempt_disable(%ebp) ; \
- movl TI_cpu(%ebp),reg ; \
- shl $sizeof_vcpu_shift,reg ; \
- addl HYPERVISOR_shared_info,reg
-#define XEN_PUT_VCPU_INFO(reg) preempt_enable(%ebp)
-#define XEN_PUT_VCPU_INFO_fixup .byte 0xff,0xff,0xff
-#else
-#define XEN_GET_VCPU_INFO(reg) movl HYPERVISOR_shared_info,reg
-#define XEN_PUT_VCPU_INFO(reg)
-#define XEN_PUT_VCPU_INFO_fixup
-#endif
-
-#define XEN_LOCKED_BLOCK_EVENTS(reg) movb $1,evtchn_upcall_mask(reg)
-#define XEN_LOCKED_UNBLOCK_EVENTS(reg) movb $0,evtchn_upcall_mask(reg)
-#define XEN_BLOCK_EVENTS(reg) XEN_GET_VCPU_INFO(reg) ; \
- XEN_LOCKED_BLOCK_EVENTS(reg) ; \
- XEN_PUT_VCPU_INFO(reg)
-#define XEN_UNBLOCK_EVENTS(reg) XEN_GET_VCPU_INFO(reg)
; \
- XEN_LOCKED_UNBLOCK_EVENTS(reg) ; \
- XEN_PUT_VCPU_INFO(reg)
-#define XEN_TEST_PENDING(reg) testb $0xFF,evtchn_upcall_pending(reg)
-
-#ifdef CONFIG_PREEMPT
-#define preempt_stop GET_THREAD_INFO(%ebp) ; \
- XEN_BLOCK_EVENTS(%esi)
-#else
-#define preempt_stop
-#define resume_kernel restore_all
-#endif
-
-#define SAVE_ALL \
- cld; \
- pushl %es; \
- pushl %ds; \
- pushl %eax; \
- pushl %ebp; \
- pushl %edi; \
- pushl %esi; \
- pushl %edx; \
- pushl %ecx; \
- pushl %ebx; \
- movl $(__USER_DS), %edx; \
- movl %edx, %ds; \
- movl %edx, %es;
-
-#define RESTORE_INT_REGS \
- popl %ebx; \
- popl %ecx; \
- popl %edx; \
- popl %esi; \
- popl %edi; \
- popl %ebp; \
- popl %eax
-
-#define RESTORE_REGS \
- RESTORE_INT_REGS; \
-1: popl %ds; \
-2: popl %es; \
-.section .fixup,"ax"; \
-3: movl $0,(%esp); \
- jmp 1b; \
-4: movl $0,(%esp); \
- jmp 2b; \
-.previous; \
-.section __ex_table,"a";\
- .align 4; \
- .long 1b,3b; \
- .long 2b,4b; \
-.previous
-
-
-#define RESTORE_ALL \
- RESTORE_REGS \
- addl $4, %esp; \
-1: iret; \
-.section .fixup,"ax"; \
-2: movl $(__USER_DS), %edx; \
- movl %edx, %ds; \
- movl %edx, %es; \
- movl $11,%eax; \
- call do_exit; \
-.previous; \
-.section __ex_table,"a";\
- .align 4; \
- .long 1b,2b; \
-.previous
-
-
-ENTRY(ret_from_fork)
- pushl %eax
- call schedule_tail
- GET_THREAD_INFO(%ebp)
- popl %eax
- jmp syscall_exit
-
-/*
- * Return to user mode is not as complex as all this looks,
- * but we want the default path for a system call return to
- * go as quickly as possible which is why some of this is
- * less clear than it otherwise should be.
- */
-
- # userspace resumption stub bypassing syscall exit tracing
- ALIGN
-ret_from_exception:
- preempt_stop
-ret_from_intr:
- GET_THREAD_INFO(%ebp)
- movl EFLAGS(%esp), %eax # mix EFLAGS and CS
- movb CS(%esp), %al
- testl $(VM_MASK | 2), %eax
- jz resume_kernel # returning to kernel or vm86-space
-ENTRY(resume_userspace)
- XEN_BLOCK_EVENTS(%esi) # make sure we don't miss an interrupt
- # setting need_resched or sigpending
- # between sampling and the iret
- movl TI_flags(%ebp), %ecx
- andl $_TIF_WORK_MASK, %ecx # is there any work to be done on
- # int/exception return?
- jne work_pending
- jmp restore_all
-
-#ifdef CONFIG_PREEMPT
-ENTRY(resume_kernel)
- XEN_BLOCK_EVENTS(%esi)
- cmpl $0,TI_preempt_count(%ebp) # non-zero preempt_count ?
- jnz restore_all
-need_resched:
- movl TI_flags(%ebp), %ecx # need_resched set ?
- testb $_TIF_NEED_RESCHED, %cl
- jz restore_all
- testb $0xFF,EVENT_MASK(%esp) # interrupts off (exception path) ?
- jnz restore_all
- call preempt_schedule_irq
- jmp need_resched
-#endif
-
-/* SYSENTER_RETURN points to after the "sysenter" instruction in
- the vsyscall page. See vsyscall-sysentry.S, which defines the symbol. */
-
- # sysenter call handler stub
-ENTRY(sysenter_entry)
- movl TSS_sysenter_esp0(%esp),%esp
-sysenter_past_esp:
- sti
- pushl $(__USER_DS)
- pushl %ebp
- pushfl
- pushl $(__USER_CS)
- pushl $SYSENTER_RETURN
-
-/*
- * Load the potential sixth argument from user stack.
- * Careful about security.
- */
- cmpl $__PAGE_OFFSET-3,%ebp
- jae syscall_fault
-1: movl (%ebp),%ebp
-.section __ex_table,"a"
- .align 4
- .long 1b,syscall_fault
-.previous
-
- pushl %eax
- SAVE_ALL
- GET_THREAD_INFO(%ebp)
-
- testb $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT),TI_flags(%ebp)
- jnz syscall_trace_entry
- cmpl $(nr_syscalls), %eax
- jae syscall_badsys
- call *sys_call_table(,%eax,4)
- movl %eax,EAX(%esp)
- cli
- movl TI_flags(%ebp), %ecx
- testw $_TIF_ALLWORK_MASK, %cx
- jne syscall_exit_work
-/* if something modifies registers it must also disable sysexit */
- movl EIP(%esp), %edx
- movl OLDESP(%esp), %ecx
- xorl %ebp,%ebp
- sti
- sysexit
-
-
- # system call handler stub
-ENTRY(system_call)
- pushl %eax # save orig_eax
- SAVE_ALL
- GET_THREAD_INFO(%ebp)
- # system call tracing in operation
- testb $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT),TI_flags(%ebp)
- jnz syscall_trace_entry
- cmpl $(nr_syscalls), %eax
- jae syscall_badsys
-syscall_call:
- call *sys_call_table(,%eax,4)
- movl %eax,EAX(%esp) # store the return value
-syscall_exit:
- XEN_BLOCK_EVENTS(%esi) # make sure we don't miss an interrupt
- # setting need_resched or sigpending
- # between sampling and the iret
- movl TI_flags(%ebp), %ecx
- testw $_TIF_ALLWORK_MASK, %cx # current->work
- jne syscall_exit_work
-restore_all:
- testl $VM_MASK, EFLAGS(%esp)
- jnz resume_vm86
- movb EVENT_MASK(%esp), %al
- notb %al # %al == ~saved_mask
- XEN_GET_VCPU_INFO(%esi)
- andb evtchn_upcall_mask(%esi),%al
- andb $1,%al # %al == mask & ~saved_mask
- jnz restore_all_enable_events # != 0 => reenable event delivery
- XEN_PUT_VCPU_INFO(%esi)
- RESTORE_ALL
-
-resume_vm86:
- XEN_UNBLOCK_EVENTS(%esi)
- RESTORE_REGS
- movl %eax,(%esp)
- movl $__HYPERVISOR_switch_vm86,%eax
- int $0x82
- ud2
-
- # perform work that needs to be done immediately before resumption
- ALIGN
-work_pending:
- testb $_TIF_NEED_RESCHED, %cl
- jz work_notifysig
-work_resched:
- call schedule
- XEN_BLOCK_EVENTS(%esi) # make sure we don't miss an interrupt
- # setting need_resched or sigpending
- # between sampling and the iret
- movl TI_flags(%ebp), %ecx
- andl $_TIF_WORK_MASK, %ecx # is there any work to be done other
- # than syscall tracing?
- jz restore_all
- testb $_TIF_NEED_RESCHED, %cl
- jnz work_resched
-
-work_notifysig: # deal with pending signals and
- # notify-resume requests
- testl $VM_MASK, EFLAGS(%esp)
- movl %esp, %eax
- jne work_notifysig_v86 # returning to kernel-space or
- # vm86-space
- xorl %edx, %edx
- call do_notify_resume
- jmp restore_all
-
- ALIGN
-work_notifysig_v86:
- pushl %ecx # save ti_flags for do_notify_resume
- call save_v86_state # %eax contains pt_regs pointer
- popl %ecx
- movl %eax, %esp
- xorl %edx, %edx
- call do_notify_resume
- jmp restore_all
-
- # perform syscall exit tracing
- ALIGN
-syscall_trace_entry:
- movl $-ENOSYS,EAX(%esp)
- movl %esp, %eax
- xorl %edx,%edx
- call do_syscall_trace
- movl ORIG_EAX(%esp), %eax
- cmpl $(nr_syscalls), %eax
- jnae syscall_call
- jmp syscall_exit
-
- # perform syscall exit tracing
- ALIGN
-syscall_exit_work:
- testb $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SINGLESTEP), %cl
- jz work_pending
- XEN_UNBLOCK_EVENTS(%esi) # could let do_syscall_trace() call
- # schedule() instead
- movl %esp, %eax
- movl $1, %edx
- call do_syscall_trace
- jmp resume_userspace
-
- ALIGN
-syscall_fault:
- pushl %eax # save orig_eax
- SAVE_ALL
- GET_THREAD_INFO(%ebp)
- movl $-EFAULT,EAX(%esp)
- jmp resume_userspace
-
- ALIGN
-syscall_badsys:
- movl $-ENOSYS,EAX(%esp)
- jmp resume_userspace
-
-#if 0 /* XEN */
-/*
- * Build the entry stubs and pointer table with
- * some assembler magic.
- */
-.data
-ENTRY(interrupt)
-.text
-
-vector=0
-ENTRY(irq_entries_start)
-.rept NR_IRQS
- ALIGN
-1: pushl $vector-256
- jmp common_interrupt
-.data
- .long 1b
-.text
-vector=vector+1
-.endr
-
- ALIGN
-common_interrupt:
- SAVE_ALL
- movl %esp,%eax
- call do_IRQ
- jmp ret_from_intr
-
-#define BUILD_INTERRUPT(name, nr) \
-ENTRY(name) \
- pushl $nr-256; \
- SAVE_ALL \
- movl %esp,%eax; \
- call smp_/**/name; \
- jmp ret_from_intr;
-
-/* The include is where all of the SMP etc. interrupts come from */
-#include "entry_arch.h"
-#endif /* XEN */
-
-ENTRY(divide_error)
- pushl $0 # no error code
- pushl $do_divide_error
- ALIGN
-error_code:
- pushl %ds
- pushl %eax
- xorl %eax, %eax
- pushl %ebp
- pushl %edi
- pushl %esi
- pushl %edx
- decl %eax # eax = -1
- pushl %ecx
- pushl %ebx
- cld
- movl %es, %ecx
- movl ES(%esp), %edi # get the function address
- movl ORIG_EAX(%esp), %edx # get the error code
- movl %eax, ORIG_EAX(%esp)
- movl %ecx, ES(%esp)
- movl $(__USER_DS), %ecx
- movl %ecx, %ds
- movl %ecx, %es
- movl %esp,%eax # pt_regs pointer
- call *%edi
- jmp ret_from_exception
-
-# A note on the "critical region" in our callback handler.
-# We want to avoid stacking callback handlers due to events occurring
-# during handling of the last event. To do this, we keep events disabled
-# until we've done all processing. HOWEVER, we must enable events before
-# popping the stack frame (can't be done atomically) and so it would still
-# be possible to get enough handler activations to overflow the stack.
-# Although unlikely, bugs of that kind are hard to track down, so we'd
-# like to avoid the possibility.
-# So, on entry to the handler we detect whether we interrupted an
-# existing activation in its critical region -- if so, we pop the current
-# activation and restart the handler using the previous one.
-ENTRY(hypervisor_callback)
- pushl %eax
- SAVE_ALL
- movl EIP(%esp),%eax
- cmpl $scrit,%eax
- jb 11f
- cmpl $ecrit,%eax
- jb critical_region_fixup
-11: push %esp
- call evtchn_do_upcall
- add $4,%esp
- jmp ret_from_intr
-
- ALIGN
-restore_all_enable_events:
- XEN_LOCKED_UNBLOCK_EVENTS(%esi)
-scrit: /**** START OF CRITICAL REGION ****/
- XEN_TEST_PENDING(%esi)
- jnz 14f # process more events if necessary...
- XEN_PUT_VCPU_INFO(%esi)
- RESTORE_ALL
-14: XEN_LOCKED_BLOCK_EVENTS(%esi)
- XEN_PUT_VCPU_INFO(%esi)
- jmp 11b
-ecrit: /**** END OF CRITICAL REGION ****/
-# [How we do the fixup]. We want to merge the current stack frame with the
-# just-interrupted frame. How we do this depends on where in the critical
-# region the interrupted handler was executing, and so how many saved
-# registers are in each frame. We do this quickly using the lookup table
-# 'critical_fixup_table'. For each byte offset in the critical region, it
-# provides the number of bytes which have already been popped from the
-# interrupted stack frame.
-critical_region_fixup:
- addl $critical_fixup_table-scrit,%eax
- movzbl (%eax),%eax # %eax contains num bytes popped
- cmpb $0xff,%al # 0xff => vcpu_info critical region
- jne 15f
- GET_THREAD_INFO(%ebp)
- XEN_PUT_VCPU_INFO(%esi) # abort vcpu_info critical region
- xorl %eax,%eax
-15: mov %esp,%esi
- add %eax,%esi # %esi points at end of src region
- mov %esp,%edi
- add $0x34,%edi # %edi points at end of dst region
- mov %eax,%ecx
- shr $2,%ecx # convert words to bytes
- je 17f # skip loop if nothing to copy
-16: subl $4,%esi # pre-decrementing copy loop
- subl $4,%edi
- movl (%esi),%eax
- movl %eax,(%edi)
- loop 16b
-17: movl %edi,%esp # final %edi is top of merged stack
- jmp 11b
-
-critical_fixup_table:
- .byte 0xff,0xff,0xff # testb $0xff,(%esi) = XEN_TEST_PENDING
- .byte 0xff,0xff # jnz 14f
- XEN_PUT_VCPU_INFO_fixup
- .byte 0x00 # pop %ebx
- .byte 0x04 # pop %ecx
- .byte 0x08 # pop %edx
- .byte 0x0c # pop %esi
- .byte 0x10 # pop %edi
- .byte 0x14 # pop %ebp
- .byte 0x18 # pop %eax
- .byte 0x1c # pop %ds
- .byte 0x20 # pop %es
- .byte 0x24,0x24,0x24 # add $4,%esp
- .byte 0x28 # iret
- .byte 0xff,0xff,0xff,0xff # movb $1,1(%esi)
- XEN_PUT_VCPU_INFO_fixup
- .byte 0x00,0x00 # jmp 11b
-
-# Hypervisor uses this for application faults while it executes.
-ENTRY(failsafe_callback)
-1: popl %ds
-2: popl %es
-3: popl %fs
-4: popl %gs
- subl $4,%esp
- SAVE_ALL
- jmp ret_from_exception
-.section .fixup,"ax"; \
-6: movl $0,(%esp); \
- jmp 1b; \
-7: movl $0,(%esp); \
- jmp 2b; \
-8: movl $0,(%esp); \
- jmp 3b; \
-9: movl $0,(%esp); \
- jmp 4b; \
-.previous; \
-.section __ex_table,"a";\
- .align 4; \
- .long 1b,6b; \
- .long 2b,7b; \
- .long 3b,8b; \
- .long 4b,9b; \
-.previous
-
-ENTRY(coprocessor_error)
- pushl $0
- pushl $do_coprocessor_error
- jmp error_code
-
-ENTRY(simd_coprocessor_error)
- pushl $0
- pushl $do_simd_coprocessor_error
- jmp error_code
-
-ENTRY(device_not_available)
- pushl $-1 # mark this as an int
- SAVE_ALL
- preempt_stop
- call math_state_restore
- jmp ret_from_exception
-
-/*
- * Debug traps and NMI can happen at the one SYSENTER instruction
- * that sets up the real kernel stack. Check here, since we can't
- * allow the wrong stack to be used.
- *
- * "TSS_sysenter_esp0+12" is because the NMI/debug handler will have
- * already pushed 3 words if it hits on the sysenter instruction:
- * eflags, cs and eip.
- *
- * We just load the right stack, and push the three (known) values
- * by hand onto the new stack - while updating the return eip past
- * the instruction that would have done it for sysenter.
- */
-#define FIX_STACK(offset, ok, label) \
- cmpw $__KERNEL_CS,4(%esp); \
- jne ok; \
-label: \
- movl TSS_sysenter_esp0+offset(%esp),%esp; \
- pushfl; \
- pushl $__KERNEL_CS; \
- pushl $sysenter_past_esp
-
-ENTRY(debug)
- cmpl $sysenter_entry,(%esp)
- jne debug_stack_correct
- FIX_STACK(12, debug_stack_correct, debug_esp_fix_insn)
-debug_stack_correct:
- pushl $-1 # mark this as an int
- SAVE_ALL
- xorl %edx,%edx # error code 0
- movl %esp,%eax # pt_regs pointer
- call do_debug
- testl %eax,%eax
- jnz restore_all
- jmp ret_from_exception
-
-#if 0 /* XEN */
-/*
- * NMI is doubly nasty. It can happen _while_ we're handling
- * a debug fault, and the debug fault hasn't yet been able to
- * clear up the stack. So we first check whether we got an
- * NMI on the sysenter entry path, but after that we need to
- * check whether we got an NMI on the debug path where the debug
- * fault happened on the sysenter path.
- */
-ENTRY(nmi)
- cmpl $sysenter_entry,(%esp)
- je nmi_stack_fixup
- pushl %eax
- movl %esp,%eax
- /* Do not access memory above the end of our stack page,
- * it might not exist.
- */
- andl $(THREAD_SIZE-1),%eax
- cmpl $(THREAD_SIZE-20),%eax
- popl %eax
- jae nmi_stack_correct
- cmpl $sysenter_entry,12(%esp)
- je nmi_debug_stack_check
-nmi_stack_correct:
- pushl %eax
- SAVE_ALL
- xorl %edx,%edx # zero error code
- movl %esp,%eax # pt_regs pointer
- call do_nmi
- RESTORE_ALL
-
-nmi_stack_fixup:
- FIX_STACK(12,nmi_stack_correct, 1)
- jmp nmi_stack_correct
-nmi_debug_stack_check:
- cmpw $__KERNEL_CS,16(%esp)
- jne nmi_stack_correct
- cmpl $debug - 1,(%esp)
- jle nmi_stack_correct
- cmpl $debug_esp_fix_insn,(%esp)
- jle nmi_debug_stack_fixup
-nmi_debug_stack_fixup:
- FIX_STACK(24,nmi_stack_correct, 1)
- jmp nmi_stack_correct
-#endif /* XEN */
-
-ENTRY(int3)
- pushl $-1 # mark this as an int
- SAVE_ALL
- xorl %edx,%edx # zero error code
- movl %esp,%eax # pt_regs pointer
- call do_int3
- testl %eax,%eax
- jnz restore_all
- jmp ret_from_exception
-
-ENTRY(overflow)
- pushl $0
- pushl $do_overflow
- jmp error_code
-
-ENTRY(bounds)
- pushl $0
- pushl $do_bounds
- jmp error_code
-
-ENTRY(invalid_op)
- pushl $0
- pushl $do_invalid_op
- jmp error_code
-
-ENTRY(coprocessor_segment_overrun)
- pushl $0
- pushl $do_coprocessor_segment_overrun
- jmp error_code
-
-ENTRY(invalid_TSS)
- pushl $do_invalid_TSS
- jmp error_code
-
-ENTRY(segment_not_present)
- pushl $do_segment_not_present
- jmp error_code
-
-ENTRY(stack_segment)
- pushl $do_stack_segment
- jmp error_code
-
-ENTRY(general_protection)
- pushl $do_general_protection
- jmp error_code
-
-ENTRY(alignment_check)
- pushl $do_alignment_check
- jmp error_code
-
-# This handler is special, because it gets an extra value on its stack,
-# which is the linear faulting address.
-# fastcall register usage: %eax = pt_regs, %edx = error code,
-# %ecx = fault address
-ENTRY(page_fault)
- pushl %ds
- pushl %eax
- xorl %eax, %eax
- pushl %ebp
- pushl %edi
- pushl %esi
- pushl %edx
- decl %eax /* eax = -1 */
- pushl %ecx
- pushl %ebx
- cld
- movl %es,%edi
- movl ES(%esp), %ecx /* get the faulting address */
- movl ORIG_EAX(%esp), %edx /* get the error code */
- movl %eax, ORIG_EAX(%esp)
- movl %edi, ES(%esp)
- movl $(__KERNEL_DS),%eax
- movl %eax, %ds
- movl %eax, %es
- movl %esp,%eax /* pt_regs pointer */
- call do_page_fault
- jmp ret_from_exception
-
-#ifdef CONFIG_X86_MCE
-ENTRY(machine_check)
- pushl $0
- pushl machine_check_vector
- jmp error_code
-#endif
-
-ENTRY(fixup_4gb_segment)
- pushl $do_fixup_4gb_segment
- jmp error_code
-
-.data
-ENTRY(sys_call_table)
- .long sys_restart_syscall /* 0 - old "setup()" system call, used
for restarting */
- .long sys_exit
- .long sys_fork
- .long sys_read
- .long sys_write
- .long sys_open /* 5 */
- .long sys_close
- .long sys_waitpid
- .long sys_creat
- .long sys_link
- .long sys_unlink /* 10 */
- .long sys_execve
- .long sys_chdir
- .long sys_time
- .long sys_mknod
- .long sys_chmod /* 15 */
- .long sys_lchown16
- .long sys_ni_syscall /* old break syscall holder */
- .long sys_stat
- .long sys_lseek
- .long sys_getpid /* 20 */
- .long sys_mount
- .long sys_oldumount
- .long sys_setuid16
- .long sys_getuid16
- .long sys_stime /* 25 */
- .long sys_ptrace
- .long sys_alarm
- .long sys_fstat
- .long sys_pause
- .long sys_utime /* 30 */
- .long sys_ni_syscall /* old stty syscall holder */
- .long sys_ni_syscall /* old gtty syscall holder */
- .long sys_access
- .long sys_nice
- .long sys_ni_syscall /* 35 - old ftime syscall holder */
- .long sys_sync
- .long sys_kill
- .long sys_rename
- .long sys_mkdir
- .long sys_rmdir /* 40 */
- .long sys_dup
- .long sys_pipe
- .long sys_times
- .long sys_ni_syscall /* old prof syscall holder */
- .long sys_brk /* 45 */
- .long sys_setgid16
- .long sys_getgid16
- .long sys_signal
- .long sys_geteuid16
- .long sys_getegid16 /* 50 */
- .long sys_acct
- .long sys_umount /* recycled never used phys() */
- .long sys_ni_syscall /* old lock syscall holder */
- .long sys_ioctl
- .long sys_fcntl /* 55 */
- .long sys_ni_syscall /* old mpx syscall holder */
- .long sys_setpgid
- .long sys_ni_syscall /* old ulimit syscall holder */
- .long sys_olduname
- .long sys_umask /* 60 */
- .long sys_chroot
- .long sys_ustat
- .long sys_dup2
- .long sys_getppid
- .long sys_getpgrp /* 65 */
- .long sys_setsid
- .long sys_sigaction
- .long sys_sgetmask
- .long sys_ssetmask
- .long sys_setreuid16 /* 70 */
- .long sys_setregid16
- .long sys_sigsuspend
- .long sys_sigpending
- .long sys_sethostname
- .long sys_setrlimit /* 75 */
- .long sys_old_getrlimit
- .long sys_getrusage
- .long sys_gettimeofday
- .long sys_settimeofday
- .long sys_getgroups16 /* 80 */
- .long sys_setgroups16
- .long old_select
- .long sys_symlink
- .long sys_lstat
- .long sys_readlink /* 85 */
- .long sys_uselib
- .long sys_swapon
- .long sys_reboot
- .long old_readdir
- .long old_mmap /* 90 */
- .long sys_munmap
- .long sys_truncate
- .long sys_ftruncate
- .long sys_fchmod
- .long sys_fchown16 /* 95 */
- .long sys_getpriority
- .long sys_setpriority
- .long sys_ni_syscall /* old profil syscall holder */
- .long sys_statfs
- .long sys_fstatfs /* 100 */
- .long sys_ioperm
- .long sys_socketcall
- .long sys_syslog
- .long sys_setitimer
- .long sys_getitimer /* 105 */
- .long sys_newstat
- .long sys_newlstat
- .long sys_newfstat
- .long sys_uname
- .long sys_iopl /* 110 */
- .long sys_vhangup
- .long sys_ni_syscall /* old "idle" system call */
- .long sys_vm86old
- .long sys_wait4
- .long sys_swapoff /* 115 */
- .long sys_sysinfo
- .long sys_ipc
- .long sys_fsync
- .long sys_sigreturn
- .long sys_clone /* 120 */
- .long sys_setdomainname
- .long sys_newuname
- .long sys_modify_ldt
- .long sys_adjtimex
- .long sys_mprotect /* 125 */
- .long sys_sigprocmask
- .long sys_ni_syscall /* old "create_module" */
- .long sys_init_module
- .long sys_delete_module
- .long sys_ni_syscall /* 130: old "get_kernel_syms" */
- .long sys_quotactl
- .long sys_getpgid
- .long sys_fchdir
- .long sys_bdflush
- .long sys_sysfs /* 135 */
- .long sys_personality
- .long sys_ni_syscall /* reserved for afs_syscall */
- .long sys_setfsuid16
- .long sys_setfsgid16
- .long sys_llseek /* 140 */
- .long sys_getdents
- .long sys_select
- .long sys_flock
- .long sys_msync
- .long sys_readv /* 145 */
- .long sys_writev
- .long sys_getsid
- .long sys_fdatasync
- .long sys_sysctl
- .long sys_mlock /* 150 */
- .long sys_munlock
- .long sys_mlockall
- .long sys_munlockall
- .long sys_sched_setparam
- .long sys_sched_getparam /* 155 */
- .long sys_sched_setscheduler
- .long sys_sched_getscheduler
- .long sys_sched_yield
- .long sys_sched_get_priority_max
- .long sys_sched_get_priority_min /* 160 */
- .long sys_sched_rr_get_interval
- .long sys_nanosleep
- .long sys_mremap
- .long sys_setresuid16
- .long sys_getresuid16 /* 165 */
- .long sys_vm86
- .long sys_ni_syscall /* Old sys_query_module */
- .long sys_poll
- .long sys_nfsservctl
- .long sys_setresgid16 /* 170 */
- .long sys_getresgid16
- .long sys_prctl
- .long sys_rt_sigreturn
- .long sys_rt_sigaction
- .long sys_rt_sigprocmask /* 175 */
- .long sys_rt_sigpending
- .long sys_rt_sigtimedwait
- .long sys_rt_sigqueueinfo
- .long sys_rt_sigsuspend
- .long sys_pread64 /* 180 */
- .long sys_pwrite64
- .long sys_chown16
- .long sys_getcwd
- .long sys_capget
- .long sys_capset /* 185 */
- .long sys_sigaltstack
- .long sys_sendfile
- .long sys_ni_syscall /* reserved for streams1 */
- .long sys_ni_syscall /* reserved for streams2 */
- .long sys_vfork /* 190 */
- .long sys_getrlimit
- .long sys_mmap2
- .long sys_truncate64
- .long sys_ftruncate64
- .long sys_stat64 /* 195 */
- .long sys_lstat64
- .long sys_fstat64
- .long sys_lchown
- .long sys_getuid
- .long sys_getgid /* 200 */
- .long sys_geteuid
- .long sys_getegid
- .long sys_setreuid
- .long sys_setregid
- .long sys_getgroups /* 205 */
- .long sys_setgroups
- .long sys_fchown
- .long sys_setresuid
- .long sys_getresuid
- .long sys_setresgid /* 210 */
- .long sys_getresgid
- .long sys_chown
- .long sys_setuid
- .long sys_setgid
- .long sys_setfsuid /* 215 */
- .long sys_setfsgid
- .long sys_pivot_root
- .long sys_mincore
- .long sys_madvise
- .long sys_getdents64 /* 220 */
- .long sys_fcntl64
- .long sys_ni_syscall /* reserved for TUX */
- .long sys_ni_syscall
- .long sys_gettid
- .long sys_readahead /* 225 */
- .long sys_setxattr
- .long sys_lsetxattr
- .long sys_fsetxattr
- .long sys_getxattr
- .long sys_lgetxattr /* 230 */
- .long sys_fgetxattr
- .long sys_listxattr
- .long sys_llistxattr
- .long sys_flistxattr
- .long sys_removexattr /* 235 */
- .long sys_lremovexattr
- .long sys_fremovexattr
- .long sys_tkill
- .long sys_sendfile64
- .long sys_futex /* 240 */
- .long sys_sched_setaffinity
- .long sys_sched_getaffinity
- .long sys_set_thread_area
- .long sys_get_thread_area
- .long sys_io_setup /* 245 */
- .long sys_io_destroy
- .long sys_io_getevents
- .long sys_io_submit
- .long sys_io_cancel
- .long sys_fadvise64 /* 250 */
- .long sys_ni_syscall
- .long sys_exit_group
- .long sys_lookup_dcookie
- .long sys_epoll_create
- .long sys_epoll_ctl /* 255 */
- .long sys_epoll_wait
- .long sys_remap_file_pages
- .long sys_set_tid_address
- .long sys_timer_create
- .long sys_timer_settime /* 260 */
- .long sys_timer_gettime
- .long sys_timer_getoverrun
- .long sys_timer_delete
- .long sys_clock_settime
- .long sys_clock_gettime /* 265 */
- .long sys_clock_getres
- .long sys_clock_nanosleep
- .long sys_statfs64
- .long sys_fstatfs64
- .long sys_tgkill /* 270 */
- .long sys_utimes
- .long sys_fadvise64_64
- .long sys_ni_syscall /* sys_vserver */
- .long sys_mbind
- .long sys_get_mempolicy
- .long sys_set_mempolicy
- .long sys_mq_open
- .long sys_mq_unlink
- .long sys_mq_timedsend
- .long sys_mq_timedreceive /* 280 */
- .long sys_mq_notify
- .long sys_mq_getsetattr
- .long sys_ni_syscall /* reserved for kexec */
- .long sys_waitid
- .long sys_ni_syscall /* 285 */ /* available */
- .long sys_add_key
- .long sys_request_key
- .long sys_keyctl
-
-syscall_table_size=(.-sys_call_table)
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/head.S
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/head.S Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,186 +0,0 @@
-
-#include <linux/config.h>
-
-.section __xen_guest
- .ascii "GUEST_OS=linux,GUEST_VER=2.6"
- .ascii ",XEN_VER=3.0"
- .ascii ",VIRT_BASE=0xC0000000"
- .ascii ",LOADER=generic"
- .byte 0
-
-.text
-#include <linux/threads.h>
-#include <linux/linkage.h>
-#include <asm/segment.h>
-#include <asm/thread_info.h>
-#include <asm/asm_offsets.h>
-#include <asm-xen/xen-public/arch-x86_32.h>
-
-/*
- * References to members of the new_cpu_data structure.
- */
-
-#define X86 new_cpu_data+CPUINFO_x86
-#define X86_VENDOR new_cpu_data+CPUINFO_x86_vendor
-#define X86_MODEL new_cpu_data+CPUINFO_x86_model
-#define X86_MASK new_cpu_data+CPUINFO_x86_mask
-#define X86_HARD_MATH new_cpu_data+CPUINFO_hard_math
-#define X86_CPUID new_cpu_data+CPUINFO_cpuid_level
-#define X86_CAPABILITY new_cpu_data+CPUINFO_x86_capability
-#define X86_VENDOR_ID new_cpu_data+CPUINFO_x86_vendor_id
-
-ENTRY(startup_32)
- cld
-
- /* Copy the necessary stuff from xen_start_info structure. */
- mov $xen_start_info_union,%edi
- mov $512,%ecx
- rep movsl
-
-#ifdef CONFIG_SMP
-ENTRY(startup_32_smp)
- cld
-#endif /* CONFIG_SMP */
-
- /* Set up the stack pointer */
- lss stack_start,%esp
-
-checkCPUtype:
-
- /* get vendor info */
- xorl %eax,%eax # call CPUID with 0 -> return vendor ID
- cpuid
- movl %eax,X86_CPUID # save CPUID level
- movl %ebx,X86_VENDOR_ID # lo 4 chars
- movl %edx,X86_VENDOR_ID+4 # next 4 chars
- movl %ecx,X86_VENDOR_ID+8 # last 4 chars
-
- movl $1,%eax # Use the CPUID instruction to get CPU type
- cpuid
- movb %al,%cl # save reg for future use
- andb $0x0f,%ah # mask processor family
- movb %ah,X86
- andb $0xf0,%al # mask model
- shrb $4,%al
- movb %al,X86_MODEL
- andb $0x0f,%cl # mask mask revision
- movb %cl,X86_MASK
- movl %edx,X86_CAPABILITY
-
- incb ready
-
- xorl %eax,%eax # Clear FS/GS and LDT
- movl %eax,%fs
- movl %eax,%gs
- cld # gcc2 wants the direction flag cleared at all
times
-
-#ifdef CONFIG_SMP
- movb ready, %cl
- cmpb $1,%cl
- je 1f # the first CPU calls start_kernel
- # all other CPUs call initialize_secondary
- call initialize_secondary
- jmp L6
-1:
-#endif /* CONFIG_SMP */
- call start_kernel
-L6:
- jmp L6 # main should never return here, but
- # just in case, we know what happens.
-
-ENTRY(lgdt_finish)
- movl $(__KERNEL_DS),%eax # reload all the segment registers
- movw %ax,%ss # after changing gdt.
-
- movl $(__USER_DS),%eax # DS/ES contains default USER segment
- movw %ax,%ds
- movw %ax,%es
-
- popl %eax # reload CS by intersegment return
- pushl $(__KERNEL_CS)
- pushl %eax
- lret
-
-ENTRY(stack_start)
- .long init_thread_union+THREAD_SIZE
- .long __BOOT_DS
-
-ready: .byte 0
-
-.globl idt_descr
-.globl cpu_gdt_descr
-
- ALIGN
- .word 0 # 32-bit align idt_desc.address
-idt_descr:
- .word IDT_ENTRIES*8-1 # idt contains 256 entries
- .long idt_table
-
-# boot GDT descriptor (later on used by CPU#0):
- .word 0 # 32 bit align gdt_desc.address
-cpu_gdt_descr:
- .word GDT_SIZE
- .long cpu_gdt_table
-
- .fill NR_CPUS-1,8,0 # space for the other GDT descriptors
-
-.org 0x1000
-ENTRY(empty_zero_page)
-
-.org 0x2000
-ENTRY(swapper_pg_dir)
-
-.org 0x3000
-ENTRY(cpu_gdt_table)
- .quad 0x0000000000000000 /* NULL descriptor */
- .quad 0x0000000000000000 /* 0x0b reserved */
- .quad 0x0000000000000000 /* 0x13 reserved */
- .quad 0x0000000000000000 /* 0x1b reserved */
- .quad 0x0000000000000000 /* 0x20 unused */
- .quad 0x0000000000000000 /* 0x28 unused */
- .quad 0x0000000000000000 /* 0x33 TLS entry 1 */
- .quad 0x0000000000000000 /* 0x3b TLS entry 2 */
- .quad 0x0000000000000000 /* 0x43 TLS entry 3 */
- .quad 0x0000000000000000 /* 0x4b reserved */
- .quad 0x0000000000000000 /* 0x53 reserved */
- .quad 0x0000000000000000 /* 0x5b reserved */
-
- .quad 0x00cfbb000000c3ff /* 0x60 kernel 4GB code at 0x00000000 */
- .quad 0x00cfb3000000c3ff /* 0x68 kernel 4GB data at 0x00000000 */
- .quad 0x00cffb000000c3ff /* 0x73 user 4GB code at 0x00000000 */
- .quad 0x00cff3000000c3ff /* 0x7b user 4GB data at 0x00000000 */
-
- .quad 0x0000000000000000 /* 0x80 TSS descriptor */
- .quad 0x0000000000000000 /* 0x88 LDT descriptor */
-
- /* Segments used for calling PnP BIOS */
- .quad 0x0000000000000000 /* 0x90 32-bit code */
- .quad 0x0000000000000000 /* 0x98 16-bit code */
- .quad 0x0000000000000000 /* 0xa0 16-bit data */
- .quad 0x0000000000000000 /* 0xa8 16-bit data */
- .quad 0x0000000000000000 /* 0xb0 16-bit data */
- /*
- * The APM segments have byte granularity and their bases
- * and limits are set at run time.
- */
- .quad 0x0000000000000000 /* 0xb8 APM CS code */
- .quad 0x0000000000000000 /* 0xc0 APM CS 16 code (16 bit) */
- .quad 0x0000000000000000 /* 0xc8 APM DS data */
-
- .quad 0x0000000000000000 /* 0xd0 - unused */
- .quad 0x0000000000000000 /* 0xd8 - unused */
- .quad 0x0000000000000000 /* 0xe0 - unused */
- .quad 0x0000000000000000 /* 0xe8 - unused */
- .quad 0x0000000000000000 /* 0xf0 - unused */
- .quad 0x0000000000000000 /* 0xf8 - GDT entry 31: double-fault
TSS */
- .fill GDT_ENTRIES-32,8,0
-
-.org 0x4000
-ENTRY(default_ldt)
-
-.org 0x5000
-/*
- * Real beginning of normal "text" segment
- */
-ENTRY(stext)
-ENTRY(_stext)
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/i386_ksyms.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/i386_ksyms.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,194 +0,0 @@
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/smp.h>
-#include <linux/user.h>
-#include <linux/elfcore.h>
-#include <linux/mca.h>
-#include <linux/sched.h>
-#include <linux/in6.h>
-#include <linux/interrupt.h>
-#include <linux/smp_lock.h>
-#include <linux/pm.h>
-#include <linux/pci.h>
-#include <linux/apm_bios.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/tty.h>
-#include <linux/highmem.h>
-#include <linux/time.h>
-
-#include <asm/semaphore.h>
-#include <asm/processor.h>
-#include <asm/i387.h>
-#include <asm/uaccess.h>
-#include <asm/checksum.h>
-#include <asm/io.h>
-#include <asm/delay.h>
-#include <asm/irq.h>
-#include <asm/mmx.h>
-#include <asm/desc.h>
-#include <asm/pgtable.h>
-#include <asm/tlbflush.h>
-#include <asm/nmi.h>
-#include <asm/ist.h>
-#include <asm/kdebug.h>
-
-extern void dump_thread(struct pt_regs *, struct user *);
-extern spinlock_t rtc_lock;
-
-/* This is definitely a GPL-only symbol */
-EXPORT_SYMBOL_GPL(cpu_gdt_table);
-
-#if defined(CONFIG_APM_MODULE)
-extern void machine_real_restart(unsigned char *, int);
-EXPORT_SYMBOL(machine_real_restart);
-extern void default_idle(void);
-EXPORT_SYMBOL(default_idle);
-#endif
-
-#ifdef CONFIG_SMP
-extern void FASTCALL( __write_lock_failed(rwlock_t *rw));
-extern void FASTCALL( __read_lock_failed(rwlock_t *rw));
-#endif
-
-#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_HD) ||
defined(CONFIG_BLK_DEV_IDE_MODULE) || defined(CONFIG_BLK_DEV_HD_MODULE)
-extern struct drive_info_struct drive_info;
-EXPORT_SYMBOL(drive_info);
-#endif
-
-extern unsigned long cpu_khz;
-extern unsigned long get_cmos_time(void);
-
-/* platform dependent support */
-EXPORT_SYMBOL(boot_cpu_data);
-#ifdef CONFIG_DISCONTIGMEM
-EXPORT_SYMBOL(node_data);
-EXPORT_SYMBOL(physnode_map);
-#endif
-#ifdef CONFIG_X86_NUMAQ
-EXPORT_SYMBOL(xquad_portio);
-#endif
-EXPORT_SYMBOL(dump_thread);
-EXPORT_SYMBOL(dump_fpu);
-EXPORT_SYMBOL_GPL(kernel_fpu_begin);
-EXPORT_SYMBOL(__ioremap);
-EXPORT_SYMBOL(ioremap_nocache);
-EXPORT_SYMBOL(iounmap);
-EXPORT_SYMBOL(kernel_thread);
-EXPORT_SYMBOL(pm_idle);
-#ifdef CONFIG_ACPI_BOOT
-EXPORT_SYMBOL(pm_power_off);
-#endif
-EXPORT_SYMBOL(get_cmos_time);
-EXPORT_SYMBOL(cpu_khz);
-EXPORT_SYMBOL(apm_info);
-
-EXPORT_SYMBOL(__down_failed);
-EXPORT_SYMBOL(__down_failed_interruptible);
-EXPORT_SYMBOL(__down_failed_trylock);
-EXPORT_SYMBOL(__up_wakeup);
-/* Networking helper routines. */
-EXPORT_SYMBOL(csum_partial_copy_generic);
-/* Delay loops */
-EXPORT_SYMBOL(__ndelay);
-EXPORT_SYMBOL(__udelay);
-EXPORT_SYMBOL(__delay);
-EXPORT_SYMBOL(__const_udelay);
-
-EXPORT_SYMBOL(__get_user_1);
-EXPORT_SYMBOL(__get_user_2);
-EXPORT_SYMBOL(__get_user_4);
-
-EXPORT_SYMBOL(strpbrk);
-EXPORT_SYMBOL(strstr);
-
-EXPORT_SYMBOL(strncpy_from_user);
-EXPORT_SYMBOL(__strncpy_from_user);
-EXPORT_SYMBOL(clear_user);
-EXPORT_SYMBOL(__clear_user);
-EXPORT_SYMBOL(__copy_from_user_ll);
-EXPORT_SYMBOL(__copy_to_user_ll);
-EXPORT_SYMBOL(strnlen_user);
-
-EXPORT_SYMBOL(dma_alloc_coherent);
-EXPORT_SYMBOL(dma_free_coherent);
-
-#ifdef CONFIG_PCI
-EXPORT_SYMBOL(pcibios_penalize_isa_irq);
-EXPORT_SYMBOL(pci_mem_start);
-#endif
-
-#ifdef CONFIG_PCI_BIOS
-EXPORT_SYMBOL(pcibios_set_irq_routing);
-EXPORT_SYMBOL(pcibios_get_irq_routing_table);
-#endif
-
-#ifdef CONFIG_X86_USE_3DNOW
-EXPORT_SYMBOL(_mmx_memcpy);
-EXPORT_SYMBOL(mmx_clear_page);
-EXPORT_SYMBOL(mmx_copy_page);
-#endif
-
-#ifdef CONFIG_X86_HT
-EXPORT_SYMBOL(smp_num_siblings);
-EXPORT_SYMBOL(cpu_sibling_map);
-#endif
-
-#ifdef CONFIG_SMP
-EXPORT_SYMBOL(cpu_data);
-EXPORT_SYMBOL(cpu_online_map);
-EXPORT_SYMBOL(cpu_callout_map);
-EXPORT_SYMBOL(__write_lock_failed);
-EXPORT_SYMBOL(__read_lock_failed);
-
-/* Global SMP stuff */
-EXPORT_SYMBOL(smp_call_function);
-
-/* TLB flushing */
-EXPORT_SYMBOL(flush_tlb_page);
-EXPORT_SYMBOL_GPL(flush_tlb_all);
-#endif
-
-#ifdef CONFIG_X86_IO_APIC
-EXPORT_SYMBOL(IO_APIC_get_PCI_irq_vector);
-#endif
-
-#ifdef CONFIG_MCA
-EXPORT_SYMBOL(machine_id);
-#endif
-
-#ifdef CONFIG_VT
-EXPORT_SYMBOL(screen_info);
-#endif
-
-EXPORT_SYMBOL(get_wchan);
-
-EXPORT_SYMBOL(rtc_lock);
-
-EXPORT_SYMBOL_GPL(set_nmi_callback);
-EXPORT_SYMBOL_GPL(unset_nmi_callback);
-
-#undef memcmp
-extern int memcmp(const void *,const void *,__kernel_size_t);
-EXPORT_SYMBOL(memcmp);
-
-EXPORT_SYMBOL(register_die_notifier);
-#ifdef CONFIG_HAVE_DEC_LOCK
-EXPORT_SYMBOL(_atomic_dec_and_lock);
-#endif
-
-EXPORT_SYMBOL(__PAGE_KERNEL);
-
-#ifdef CONFIG_HIGHMEM
-EXPORT_SYMBOL(kmap);
-EXPORT_SYMBOL(kunmap);
-EXPORT_SYMBOL(kmap_atomic);
-EXPORT_SYMBOL(kunmap_atomic);
-EXPORT_SYMBOL(kmap_atomic_to_page);
-#endif
-
-#if defined(CONFIG_X86_SPEEDSTEP_SMI) ||
defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE)
-EXPORT_SYMBOL(ist_info);
-#endif
-
-EXPORT_SYMBOL(csum_partial);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/io_apic.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/io_apic.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,2611 +0,0 @@
-/*
- * Intel IO-APIC support for multi-Pentium hosts.
- *
- * Copyright (C) 1997, 1998, 1999, 2000 Ingo Molnar, Hajnalka Szabo
- *
- * Many thanks to Stig Venaas for trying out countless experimental
- * patches and reporting/debugging problems patiently!
- *
- * (c) 1999, Multiple IO-APIC support, developed by
- * Ken-ichi Yaku <yaku@xxxxxxxxxxxxxxxxxxxx> and
- * Hidemi Kishimoto <kisimoto@xxxxxxxxxxxxxxxxxxxx>,
- * further tested and cleaned up by Zach Brown <zab@xxxxxxxxxx>
- * and Ingo Molnar <mingo@xxxxxxxxxx>
- *
- * Fixes
- * Maciej W. Rozycki : Bits for genuine 82489DX APICs;
- * thanks to Eric Gilmore
- * and Rolf G. Tews
- * for testing these extensively
- * Paul Diefenbaugh : Added full ACPI support
- */
-
-#include <linux/mm.h>
-#include <linux/irq.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/sched.h>
-#include <linux/config.h>
-#include <linux/smp_lock.h>
-#include <linux/mc146818rtc.h>
-#include <linux/compiler.h>
-#include <linux/acpi.h>
-
-#include <linux/sysdev.h>
-#include <asm/io.h>
-#include <asm/smp.h>
-#include <asm/desc.h>
-#include <asm/timer.h>
-
-#include <mach_apic.h>
-
-#include "io_ports.h"
-
-#ifdef CONFIG_XEN
-
-#include <asm-xen/xen-public/xen.h>
-#include <asm-xen/xen-public/physdev.h>
-
-/* Fake i8259 */
-#define make_8259A_irq(_irq) (io_apic_irqs &= ~(1UL<<(_irq)))
-#define disable_8259A_irq(_irq) ((void)0)
-#define i8259A_irq_pending(_irq) (0)
-
-unsigned long io_apic_irqs;
-
-static inline unsigned int xen_io_apic_read(unsigned int apic, unsigned int
reg)
-{
- physdev_op_t op;
- int ret;
-
- op.cmd = PHYSDEVOP_APIC_READ;
- op.u.apic_op.apic = mp_ioapics[apic].mpc_apicid;
- op.u.apic_op.offset = reg;
- ret = HYPERVISOR_physdev_op(&op);
- if (ret)
- return ret;
- return op.u.apic_op.value;
-}
-
-static inline void xen_io_apic_write(unsigned int apic, unsigned int reg,
unsigned int value)
-{
- physdev_op_t op;
-
- op.cmd = PHYSDEVOP_APIC_WRITE;
- op.u.apic_op.apic = mp_ioapics[apic].mpc_apicid;
- op.u.apic_op.offset = reg;
- op.u.apic_op.value = value;
- HYPERVISOR_physdev_op(&op);
-}
-
-#define io_apic_read(a,r) xen_io_apic_read(a,r)
-#define io_apic_write(a,r,v) xen_io_apic_write(a,r,v)
-
-#endif /* CONFIG_XEN */
-
-int (*ioapic_renumber_irq)(int ioapic, int irq);
-atomic_t irq_mis_count;
-
-static DEFINE_SPINLOCK(ioapic_lock);
-
-/*
- * Is the SiS APIC rmw bug present ?
- * -1 = don't know, 0 = no, 1 = yes
- */
-int sis_apic_bug = -1;
-
-/*
- * # of IRQ routing registers
- */
-int nr_ioapic_registers[MAX_IO_APICS];
-
-/*
- * Rough estimation of how many shared IRQs there are, can
- * be changed anytime.
- */
-#define MAX_PLUS_SHARED_IRQS NR_IRQS
-#define PIN_MAP_SIZE (MAX_PLUS_SHARED_IRQS + NR_IRQS)
-
-/*
- * This is performance-critical, we want to do it O(1)
- *
- * the indexing order of this array favors 1:1 mappings
- * between pins and IRQs.
- */
-
-static struct irq_pin_list {
- int apic, pin, next;
-} irq_2_pin[PIN_MAP_SIZE];
-
-int vector_irq[NR_VECTORS] = { [0 ... NR_VECTORS - 1] = -1};
-#ifdef CONFIG_PCI_MSI
-#define vector_to_irq(vector) \
- (platform_legacy_irq(vector) ? vector : vector_irq[vector])
-#else
-#define vector_to_irq(vector) (vector)
-#endif
-
-/*
- * The common case is 1:1 IRQ<->pin mappings. Sometimes there are
- * shared ISA-space IRQs, so we have to support them. We are super
- * fast in the common case, and fast for shared ISA-space IRQs.
- */
-static void add_pin_to_irq(unsigned int irq, int apic, int pin)
-{
- static int first_free_entry = NR_IRQS;
- struct irq_pin_list *entry = irq_2_pin + irq;
-
- while (entry->next)
- entry = irq_2_pin + entry->next;
-
- if (entry->pin != -1) {
- entry->next = first_free_entry;
- entry = irq_2_pin + entry->next;
- if (++first_free_entry >= PIN_MAP_SIZE)
- panic("io_apic.c: whoops");
- }
- entry->apic = apic;
- entry->pin = pin;
-}
-
-#ifndef CONFIG_XEN
-/*
- * Reroute an IRQ to a different pin.
- */
-static void __init replace_pin_at_irq(unsigned int irq,
- int oldapic, int oldpin,
- int newapic, int newpin)
-{
- struct irq_pin_list *entry = irq_2_pin + irq;
-
- while (1) {
- if (entry->apic == oldapic && entry->pin == oldpin) {
- entry->apic = newapic;
- entry->pin = newpin;
- }
- if (!entry->next)
- break;
- entry = irq_2_pin + entry->next;
- }
-}
-
-static void __modify_IO_APIC_irq (unsigned int irq, unsigned long enable,
unsigned long disable)
-{
- struct irq_pin_list *entry = irq_2_pin + irq;
- unsigned int pin, reg;
-
- for (;;) {
- pin = entry->pin;
- if (pin == -1)
- break;
- reg = io_apic_read(entry->apic, 0x10 + pin*2);
- reg &= ~disable;
- reg |= enable;
- io_apic_modify(entry->apic, 0x10 + pin*2, reg);
- if (!entry->next)
- break;
- entry = irq_2_pin + entry->next;
- }
-}
-
-/* mask = 1 */
-static void __mask_IO_APIC_irq (unsigned int irq)
-{
- __modify_IO_APIC_irq(irq, 0x00010000, 0);
-}
-
-/* mask = 0 */
-static void __unmask_IO_APIC_irq (unsigned int irq)
-{
- __modify_IO_APIC_irq(irq, 0, 0x00010000);
-}
-
-/* mask = 1, trigger = 0 */
-static void __mask_and_edge_IO_APIC_irq (unsigned int irq)
-{
- __modify_IO_APIC_irq(irq, 0x00010000, 0x00008000);
-}
-
-/* mask = 0, trigger = 1 */
-static void __unmask_and_level_IO_APIC_irq (unsigned int irq)
-{
- __modify_IO_APIC_irq(irq, 0x00008000, 0x00010000);
-}
-
-static void mask_IO_APIC_irq (unsigned int irq)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&ioapic_lock, flags);
- __mask_IO_APIC_irq(irq);
- spin_unlock_irqrestore(&ioapic_lock, flags);
-}
-
-static void unmask_IO_APIC_irq (unsigned int irq)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&ioapic_lock, flags);
- __unmask_IO_APIC_irq(irq);
- spin_unlock_irqrestore(&ioapic_lock, flags);
-}
-
-void clear_IO_APIC_pin(unsigned int apic, unsigned int pin)
-{
- struct IO_APIC_route_entry entry;
- unsigned long flags;
-
- /* Check delivery_mode to be sure we're not clearing an SMI pin */
- spin_lock_irqsave(&ioapic_lock, flags);
- *(((int*)&entry) + 0) = io_apic_read(apic, 0x10 + 2 * pin);
- *(((int*)&entry) + 1) = io_apic_read(apic, 0x11 + 2 * pin);
- spin_unlock_irqrestore(&ioapic_lock, flags);
- if (entry.delivery_mode == dest_SMI)
- return;
-
- /*
- * Disable it in the IO-APIC irq-routing table:
- */
- memset(&entry, 0, sizeof(entry));
- entry.mask = 1;
- spin_lock_irqsave(&ioapic_lock, flags);
- io_apic_write(apic, 0x10 + 2 * pin, *(((int *)&entry) + 0));
- io_apic_write(apic, 0x11 + 2 * pin, *(((int *)&entry) + 1));
- spin_unlock_irqrestore(&ioapic_lock, flags);
-}
-
-static void clear_IO_APIC (void)
-{
- int apic, pin;
-
- for (apic = 0; apic < nr_ioapics; apic++)
- for (pin = 0; pin < nr_ioapic_registers[apic]; pin++)
- clear_IO_APIC_pin(apic, pin);
-}
-
-static void set_ioapic_affinity_irq(unsigned int irq, cpumask_t cpumask)
-{
- unsigned long flags;
- int pin;
- struct irq_pin_list *entry = irq_2_pin + irq;
- unsigned int apicid_value;
-
- apicid_value = cpu_mask_to_apicid(cpumask);
- /* Prepare to do the io_apic_write */
- apicid_value = apicid_value << 24;
- spin_lock_irqsave(&ioapic_lock, flags);
- for (;;) {
- pin = entry->pin;
- if (pin == -1)
- break;
- io_apic_write(entry->apic, 0x10 + 1 + pin*2, apicid_value);
- if (!entry->next)
- break;
- entry = irq_2_pin + entry->next;
- }
- spin_unlock_irqrestore(&ioapic_lock, flags);
-}
-#else
-#define clear_IO_APIC() ((void)0)
-#endif
-
-#if defined(CONFIG_IRQBALANCE)
-# include <asm/processor.h> /* kernel_thread() */
-# include <linux/kernel_stat.h> /* kstat */
-# include <linux/slab.h> /* kmalloc() */
-# include <linux/timer.h> /* time_after() */
-
-# ifdef CONFIG_BALANCED_IRQ_DEBUG
-# define TDprintk(x...) do { printk("<%ld:%s:%d>: ", jiffies, __FILE__,
__LINE__); printk(x); } while (0)
-# define Dprintk(x...) do { TDprintk(x); } while (0)
-# else
-# define TDprintk(x...)
-# define Dprintk(x...)
-# endif
-
-cpumask_t __cacheline_aligned pending_irq_balance_cpumask[NR_IRQS];
-
-#define IRQBALANCE_CHECK_ARCH -999
-static int irqbalance_disabled = IRQBALANCE_CHECK_ARCH;
-static int physical_balance = 0;
-
-struct irq_cpu_info {
- unsigned long * last_irq;
- unsigned long * irq_delta;
- unsigned long irq;
-} irq_cpu_data[NR_CPUS];
-
-#define CPU_IRQ(cpu) (irq_cpu_data[cpu].irq)
-#define LAST_CPU_IRQ(cpu,irq) (irq_cpu_data[cpu].last_irq[irq])
-#define IRQ_DELTA(cpu,irq) (irq_cpu_data[cpu].irq_delta[irq])
-
-#define IDLE_ENOUGH(cpu,now) \
- (idle_cpu(cpu) && ((now) - irq_stat[(cpu)].idle_timestamp > 1))
-
-#define IRQ_ALLOWED(cpu, allowed_mask) cpu_isset(cpu, allowed_mask)
-
-#define CPU_TO_PACKAGEINDEX(i) (first_cpu(cpu_sibling_map[i]))
-
-#define MAX_BALANCED_IRQ_INTERVAL (5*HZ)
-#define MIN_BALANCED_IRQ_INTERVAL (HZ/2)
-#define BALANCED_IRQ_MORE_DELTA (HZ/10)
-#define BALANCED_IRQ_LESS_DELTA (HZ)
-
-long balanced_irq_interval = MAX_BALANCED_IRQ_INTERVAL;
-
-static unsigned long move(int curr_cpu, cpumask_t allowed_mask,
- unsigned long now, int direction)
-{
- int search_idle = 1;
- int cpu = curr_cpu;
-
- goto inside;
-
- do {
- if (unlikely(cpu == curr_cpu))
- search_idle = 0;
-inside:
- if (direction == 1) {
- cpu++;
- if (cpu >= NR_CPUS)
- cpu = 0;
- } else {
- cpu--;
- if (cpu == -1)
- cpu = NR_CPUS-1;
- }
- } while (!cpu_online(cpu) || !IRQ_ALLOWED(cpu,allowed_mask) ||
- (search_idle && !IDLE_ENOUGH(cpu,now)));
-
- return cpu;
-}
-
-static inline void balance_irq(int cpu, int irq)
-{
- unsigned long now = jiffies;
- cpumask_t allowed_mask;
- unsigned int new_cpu;
-
- if (irqbalance_disabled)
- return;
-
- cpus_and(allowed_mask, cpu_online_map, irq_affinity[irq]);
- new_cpu = move(cpu, allowed_mask, now, 1);
- if (cpu != new_cpu) {
- irq_desc_t *desc = irq_desc + irq;
- unsigned long flags;
-
- spin_lock_irqsave(&desc->lock, flags);
- pending_irq_balance_cpumask[irq] = cpumask_of_cpu(new_cpu);
- spin_unlock_irqrestore(&desc->lock, flags);
- }
-}
-
-static inline void rotate_irqs_among_cpus(unsigned long useful_load_threshold)
-{
- int i, j;
- Dprintk("Rotating IRQs among CPUs.\n");
- for (i = 0; i < NR_CPUS; i++) {
- for (j = 0; cpu_online(i) && (j < NR_IRQS); j++) {
- if (!irq_desc[j].action)
- continue;
- /* Is it a significant load ? */
- if (IRQ_DELTA(CPU_TO_PACKAGEINDEX(i),j) <
- useful_load_threshold)
- continue;
- balance_irq(i, j);
- }
- }
- balanced_irq_interval = max((long)MIN_BALANCED_IRQ_INTERVAL,
- balanced_irq_interval - BALANCED_IRQ_LESS_DELTA);
- return;
-}
-
-static void do_irq_balance(void)
-{
- int i, j;
- unsigned long max_cpu_irq = 0, min_cpu_irq = (~0);
- unsigned long move_this_load = 0;
- int max_loaded = 0, min_loaded = 0;
- int load;
- unsigned long useful_load_threshold = balanced_irq_interval + 10;
- int selected_irq;
- int tmp_loaded, first_attempt = 1;
- unsigned long tmp_cpu_irq;
- unsigned long imbalance = 0;
- cpumask_t allowed_mask, target_cpu_mask, tmp;
-
- for (i = 0; i < NR_CPUS; i++) {
- int package_index;
- CPU_IRQ(i) = 0;
- if (!cpu_online(i))
- continue;
- package_index = CPU_TO_PACKAGEINDEX(i);
- for (j = 0; j < NR_IRQS; j++) {
- unsigned long value_now, delta;
- /* Is this an active IRQ? */
- if (!irq_desc[j].action)
- continue;
- if ( package_index == i )
- IRQ_DELTA(package_index,j) = 0;
- /* Determine the total count per processor per IRQ */
- value_now = (unsigned long) kstat_cpu(i).irqs[j];
-
- /* Determine the activity per processor per IRQ */
- delta = value_now - LAST_CPU_IRQ(i,j);
-
- /* Update last_cpu_irq[][] for the next time */
- LAST_CPU_IRQ(i,j) = value_now;
-
- /* Ignore IRQs whose rate is less than the clock */
- if (delta < useful_load_threshold)
- continue;
- /* update the load for the processor or package total */
- IRQ_DELTA(package_index,j) += delta;
-
- /* Keep track of the higher numbered sibling as well */
- if (i != package_index)
- CPU_IRQ(i) += delta;
- /*
- * We have sibling A and sibling B in the package
- *
- * cpu_irq[A] = load for cpu A + load for cpu B
- * cpu_irq[B] = load for cpu B
- */
- CPU_IRQ(package_index) += delta;
- }
- }
- /* Find the least loaded processor package */
- for (i = 0; i < NR_CPUS; i++) {
- if (!cpu_online(i))
- continue;
- if (i != CPU_TO_PACKAGEINDEX(i))
- continue;
- if (min_cpu_irq > CPU_IRQ(i)) {
- min_cpu_irq = CPU_IRQ(i);
- min_loaded = i;
- }
- }
- max_cpu_irq = ULONG_MAX;
-
-tryanothercpu:
- /* Look for heaviest loaded processor.
- * We may come back to get the next heaviest loaded processor.
- * Skip processors with trivial loads.
- */
- tmp_cpu_irq = 0;
- tmp_loaded = -1;
- for (i = 0; i < NR_CPUS; i++) {
- if (!cpu_online(i))
- continue;
- if (i != CPU_TO_PACKAGEINDEX(i))
- continue;
- if (max_cpu_irq <= CPU_IRQ(i))
- continue;
- if (tmp_cpu_irq < CPU_IRQ(i)) {
- tmp_cpu_irq = CPU_IRQ(i);
- tmp_loaded = i;
- }
- }
-
- if (tmp_loaded == -1) {
- /* In the case of small number of heavy interrupt sources,
- * loading some of the cpus too much. We use Ingo's original
- * approach to rotate them around.
- */
- if (!first_attempt && imbalance >= useful_load_threshold) {
- rotate_irqs_among_cpus(useful_load_threshold);
- return;
- }
- goto not_worth_the_effort;
- }
-
- first_attempt = 0; /* heaviest search */
- max_cpu_irq = tmp_cpu_irq; /* load */
- max_loaded = tmp_loaded; /* processor */
- imbalance = (max_cpu_irq - min_cpu_irq) / 2;
-
- Dprintk("max_loaded cpu = %d\n", max_loaded);
- Dprintk("min_loaded cpu = %d\n", min_loaded);
- Dprintk("max_cpu_irq load = %ld\n", max_cpu_irq);
- Dprintk("min_cpu_irq load = %ld\n", min_cpu_irq);
- Dprintk("load imbalance = %lu\n", imbalance);
-
- /* if imbalance is less than approx 10% of max load, then
- * observe diminishing returns action. - quit
- */
- if (imbalance < (max_cpu_irq >> 3)) {
- Dprintk("Imbalance too trivial\n");
- goto not_worth_the_effort;
- }
-
-tryanotherirq:
- /* if we select an IRQ to move that can't go where we want, then
- * see if there is another one to try.
- */
- move_this_load = 0;
- selected_irq = -1;
- for (j = 0; j < NR_IRQS; j++) {
- /* Is this an active IRQ? */
- if (!irq_desc[j].action)
- continue;
- if (imbalance <= IRQ_DELTA(max_loaded,j))
- continue;
- /* Try to find the IRQ that is closest to the imbalance
- * without going over.
- */
- if (move_this_load < IRQ_DELTA(max_loaded,j)) {
- move_this_load = IRQ_DELTA(max_loaded,j);
- selected_irq = j;
- }
- }
- if (selected_irq == -1) {
- goto tryanothercpu;
- }
-
- imbalance = move_this_load;
-
- /* For physical_balance case, we accumlated both load
- * values in the one of the siblings cpu_irq[],
- * to use the same code for physical and logical processors
- * as much as possible.
- *
- * NOTE: the cpu_irq[] array holds the sum of the load for
- * sibling A and sibling B in the slot for the lowest numbered
- * sibling (A), _AND_ the load for sibling B in the slot for
- * the higher numbered sibling.
- *
- * We seek the least loaded sibling by making the comparison
- * (A+B)/2 vs B
- */
- load = CPU_IRQ(min_loaded) >> 1;
- for_each_cpu_mask(j, cpu_sibling_map[min_loaded]) {
- if (load > CPU_IRQ(j)) {
- /* This won't change cpu_sibling_map[min_loaded] */
- load = CPU_IRQ(j);
- min_loaded = j;
- }
- }
-
- cpus_and(allowed_mask, cpu_online_map, irq_affinity[selected_irq]);
- target_cpu_mask = cpumask_of_cpu(min_loaded);
- cpus_and(tmp, target_cpu_mask, allowed_mask);
-
- if (!cpus_empty(tmp)) {
- irq_desc_t *desc = irq_desc + selected_irq;
- unsigned long flags;
-
- Dprintk("irq = %d moved to cpu = %d\n",
- selected_irq, min_loaded);
- /* mark for change destination */
- spin_lock_irqsave(&desc->lock, flags);
- pending_irq_balance_cpumask[selected_irq] =
- cpumask_of_cpu(min_loaded);
- spin_unlock_irqrestore(&desc->lock, flags);
- /* Since we made a change, come back sooner to
- * check for more variation.
- */
- balanced_irq_interval = max((long)MIN_BALANCED_IRQ_INTERVAL,
- balanced_irq_interval - BALANCED_IRQ_LESS_DELTA);
- return;
- }
- goto tryanotherirq;
-
-not_worth_the_effort:
- /*
- * if we did not find an IRQ to move, then adjust the time interval
- * upward
- */
- balanced_irq_interval = min((long)MAX_BALANCED_IRQ_INTERVAL,
- balanced_irq_interval + BALANCED_IRQ_MORE_DELTA);
- Dprintk("IRQ worth rotating not found\n");
- return;
-}
-
-static int balanced_irq(void *unused)
-{
- int i;
- unsigned long prev_balance_time = jiffies;
- long time_remaining = balanced_irq_interval;
-
- daemonize("kirqd");
-
- /* push everything to CPU 0 to give us a starting point. */
- for (i = 0 ; i < NR_IRQS ; i++) {
- pending_irq_balance_cpumask[i] = cpumask_of_cpu(0);
- }
-
- for ( ; ; ) {
- set_current_state(TASK_INTERRUPTIBLE);
- time_remaining = schedule_timeout(time_remaining);
- try_to_freeze(PF_FREEZE);
- if (time_after(jiffies,
- prev_balance_time+balanced_irq_interval)) {
- do_irq_balance();
- prev_balance_time = jiffies;
- time_remaining = balanced_irq_interval;
- }
- }
- return 0;
-}
-
-static int __init balanced_irq_init(void)
-{
- int i;
- struct cpuinfo_x86 *c;
- cpumask_t tmp;
-
- cpus_shift_right(tmp, cpu_online_map, 2);
- c = &boot_cpu_data;
- /* When not overwritten by the command line ask subarchitecture. */
- if (irqbalance_disabled == IRQBALANCE_CHECK_ARCH)
- irqbalance_disabled = NO_BALANCE_IRQ;
- if (irqbalance_disabled)
- return 0;
-
- /* disable irqbalance completely if there is only one processor online
*/
- if (num_online_cpus() < 2) {
- irqbalance_disabled = 1;
- return 0;
- }
- /*
- * Enable physical balance only if more than 1 physical processor
- * is present
- */
- if (smp_num_siblings > 1 && !cpus_empty(tmp))
- physical_balance = 1;
-
- for (i = 0; i < NR_CPUS; i++) {
- if (!cpu_online(i))
- continue;
- irq_cpu_data[i].irq_delta = kmalloc(sizeof(unsigned long) *
NR_IRQS, GFP_KERNEL);
- irq_cpu_data[i].last_irq = kmalloc(sizeof(unsigned long) *
NR_IRQS, GFP_KERNEL);
- if (irq_cpu_data[i].irq_delta == NULL ||
irq_cpu_data[i].last_irq == NULL) {
- printk(KERN_ERR "balanced_irq_init: out of memory");
- goto failed;
- }
- memset(irq_cpu_data[i].irq_delta,0,sizeof(unsigned long) *
NR_IRQS);
- memset(irq_cpu_data[i].last_irq,0,sizeof(unsigned long) *
NR_IRQS);
- }
-
- printk(KERN_INFO "Starting balanced_irq\n");
- if (kernel_thread(balanced_irq, NULL, CLONE_KERNEL) >= 0)
- return 0;
- else
- printk(KERN_ERR "balanced_irq_init: failed to spawn
balanced_irq");
-failed:
- for (i = 0; i < NR_CPUS; i++) {
- if(irq_cpu_data[i].irq_delta)
- kfree(irq_cpu_data[i].irq_delta);
- if(irq_cpu_data[i].last_irq)
- kfree(irq_cpu_data[i].last_irq);
- }
- return 0;
-}
-
-int __init irqbalance_disable(char *str)
-{
- irqbalance_disabled = 1;
- return 0;
-}
-
-__setup("noirqbalance", irqbalance_disable);
-
-static inline void move_irq(int irq)
-{
- /* note - we hold the desc->lock */
- if (unlikely(!cpus_empty(pending_irq_balance_cpumask[irq]))) {
- set_ioapic_affinity_irq(irq, pending_irq_balance_cpumask[irq]);
- cpus_clear(pending_irq_balance_cpumask[irq]);
- }
-}
-
-late_initcall(balanced_irq_init);
-
-#else /* !CONFIG_IRQBALANCE */
-static inline void move_irq(int irq) { }
-#endif /* CONFIG_IRQBALANCE */
-
-#ifndef CONFIG_SMP
-void fastcall send_IPI_self(int vector)
-{
-#ifndef CONFIG_XEN
- unsigned int cfg;
-
- /*
- * Wait for idle.
- */
- apic_wait_icr_idle();
- cfg = APIC_DM_FIXED | APIC_DEST_SELF | vector | APIC_DEST_LOGICAL;
- /*
- * Send the IPI. The write to APIC_ICR fires this off.
- */
- apic_write_around(APIC_ICR, cfg);
-#endif
-}
-#endif /* !CONFIG_SMP */
-
-
-/*
- * support for broken MP BIOSs, enables hand-redirection of PIRQ0-7 to
- * specific CPU-side IRQs.
- */
-
-#define MAX_PIRQS 8
-int pirq_entries [MAX_PIRQS];
-int pirqs_enabled;
-int skip_ioapic_setup;
-
-static int __init ioapic_setup(char *str)
-{
- skip_ioapic_setup = 1;
- return 1;
-}
-
-__setup("noapic", ioapic_setup);
-
-static int __init ioapic_pirq_setup(char *str)
-{
- int i, max;
- int ints[MAX_PIRQS+1];
-
- get_options(str, ARRAY_SIZE(ints), ints);
-
- for (i = 0; i < MAX_PIRQS; i++)
- pirq_entries[i] = -1;
-
- pirqs_enabled = 1;
- apic_printk(APIC_VERBOSE, KERN_INFO
- "PIRQ redirection, working around broken MP-BIOS.\n");
- max = MAX_PIRQS;
- if (ints[0] < MAX_PIRQS)
- max = ints[0];
-
- for (i = 0; i < max; i++) {
- apic_printk(APIC_VERBOSE, KERN_DEBUG
- "... PIRQ%d -> IRQ %d\n", i, ints[i+1]);
- /*
- * PIRQs are mapped upside down, usually.
- */
- pirq_entries[MAX_PIRQS-i-1] = ints[i+1];
- }
- return 1;
-}
-
-__setup("pirq=", ioapic_pirq_setup);
-
-/*
- * Find the IRQ entry number of a certain pin.
- */
-static int find_irq_entry(int apic, int pin, int type)
-{
- int i;
-
- for (i = 0; i < mp_irq_entries; i++)
- if (mp_irqs[i].mpc_irqtype == type &&
- (mp_irqs[i].mpc_dstapic == mp_ioapics[apic].mpc_apicid ||
- mp_irqs[i].mpc_dstapic == MP_APIC_ALL) &&
- mp_irqs[i].mpc_dstirq == pin)
- return i;
-
- return -1;
-}
-
-#ifndef CONFIG_XEN
-/*
- * Find the pin to which IRQ[irq] (ISA) is connected
- */
-static int find_isa_irq_pin(int irq, int type)
-{
- int i;
-
- for (i = 0; i < mp_irq_entries; i++) {
- int lbus = mp_irqs[i].mpc_srcbus;
-
- if ((mp_bus_id_to_type[lbus] == MP_BUS_ISA ||
- mp_bus_id_to_type[lbus] == MP_BUS_EISA ||
- mp_bus_id_to_type[lbus] == MP_BUS_MCA ||
- mp_bus_id_to_type[lbus] == MP_BUS_NEC98
- ) &&
- (mp_irqs[i].mpc_irqtype == type) &&
- (mp_irqs[i].mpc_srcbusirq == irq))
-
- return mp_irqs[i].mpc_dstirq;
- }
- return -1;
-}
-#endif
-
-/*
- * Find a specific PCI IRQ entry.
- * Not an __init, possibly needed by modules
- */
-static int pin_2_irq(int idx, int apic, int pin);
-
-int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin)
-{
- int apic, i, best_guess = -1;
-
- apic_printk(APIC_DEBUG, "querying PCI -> IRQ mapping bus:%d, "
- "slot:%d, pin:%d.\n", bus, slot, pin);
- if (mp_bus_id_to_pci_bus[bus] == -1) {
- printk(KERN_WARNING "PCI BIOS passed nonexistent PCI bus
%d!\n", bus);
- return -1;
- }
- for (i = 0; i < mp_irq_entries; i++) {
- int lbus = mp_irqs[i].mpc_srcbus;
-
- for (apic = 0; apic < nr_ioapics; apic++)
- if (mp_ioapics[apic].mpc_apicid ==
mp_irqs[i].mpc_dstapic ||
- mp_irqs[i].mpc_dstapic == MP_APIC_ALL)
- break;
-
- if ((mp_bus_id_to_type[lbus] == MP_BUS_PCI) &&
- !mp_irqs[i].mpc_irqtype &&
- (bus == lbus) &&
- (slot == ((mp_irqs[i].mpc_srcbusirq >> 2) & 0x1f))) {
- int irq = pin_2_irq(i,apic,mp_irqs[i].mpc_dstirq);
-
- if (!(apic || IO_APIC_IRQ(irq)))
- continue;
-
- if (pin == (mp_irqs[i].mpc_srcbusirq & 3))
- return irq;
- /*
- * Use the first all-but-pin matching entry as a
- * best-guess fuzzy result for broken mptables.
- */
- if (best_guess < 0)
- best_guess = irq;
- }
- }
- return best_guess;
-}
-
-#ifndef CONFIG_XEN
-/*
- * This function currently is only a helper for the i386 smp boot process
where
- * we need to reprogram the ioredtbls to cater for the cpus which have come
online
- * so mask in all cases should simply be TARGET_CPUS
- */
-void __init setup_ioapic_dest(void)
-{
- int pin, ioapic, irq, irq_entry;
-
- if (skip_ioapic_setup == 1)
- return;
-
- for (ioapic = 0; ioapic < nr_ioapics; ioapic++) {
- for (pin = 0; pin < nr_ioapic_registers[ioapic]; pin++) {
- irq_entry = find_irq_entry(ioapic, pin, mp_INT);
- if (irq_entry == -1)
- continue;
- irq = pin_2_irq(irq_entry, ioapic, pin);
- set_ioapic_affinity_irq(irq, TARGET_CPUS);
- }
-
- }
-}
-#endif /* !CONFIG_XEN */
-
-/*
- * EISA Edge/Level control register, ELCR
- */
-static int EISA_ELCR(unsigned int irq)
-{
- if (irq < 16) {
- unsigned int port = 0x4d0 + (irq >> 3);
- return (inb(port) >> (irq & 7)) & 1;
- }
- apic_printk(APIC_VERBOSE, KERN_INFO
- "Broken MPtable reports ISA irq %d\n", irq);
- return 0;
-}
-
-/* EISA interrupts are always polarity zero and can be edge or level
- * trigger depending on the ELCR value. If an interrupt is listed as
- * EISA conforming in the MP table, that means its trigger type must
- * be read in from the ELCR */
-
-#define default_EISA_trigger(idx) (EISA_ELCR(mp_irqs[idx].mpc_srcbusirq))
-#define default_EISA_polarity(idx) (0)
-
-/* ISA interrupts are always polarity zero edge triggered,
- * when listed as conforming in the MP table. */
-
-#define default_ISA_trigger(idx) (0)
-#define default_ISA_polarity(idx) (0)
-
-/* PCI interrupts are always polarity one level triggered,
- * when listed as conforming in the MP table. */
-
-#define default_PCI_trigger(idx) (1)
-#define default_PCI_polarity(idx) (1)
-
-/* MCA interrupts are always polarity zero level triggered,
- * when listed as conforming in the MP table. */
-
-#define default_MCA_trigger(idx) (1)
-#define default_MCA_polarity(idx) (0)
-
-/* NEC98 interrupts are always polarity zero edge triggered,
- * when listed as conforming in the MP table. */
-
-#define default_NEC98_trigger(idx) (0)
-#define default_NEC98_polarity(idx) (0)
-
-static int __init MPBIOS_polarity(int idx)
-{
- int bus = mp_irqs[idx].mpc_srcbus;
- int polarity;
-
- /*
- * Determine IRQ line polarity (high active or low active):
- */
- switch (mp_irqs[idx].mpc_irqflag & 3)
- {
- case 0: /* conforms, ie. bus-type dependent polarity */
- {
- switch (mp_bus_id_to_type[bus])
- {
- case MP_BUS_ISA: /* ISA pin */
- {
- polarity = default_ISA_polarity(idx);
- break;
- }
- case MP_BUS_EISA: /* EISA pin */
- {
- polarity = default_EISA_polarity(idx);
- break;
- }
- case MP_BUS_PCI: /* PCI pin */
- {
- polarity = default_PCI_polarity(idx);
- break;
- }
- case MP_BUS_MCA: /* MCA pin */
- {
- polarity = default_MCA_polarity(idx);
- break;
- }
- case MP_BUS_NEC98: /* NEC 98 pin */
- {
- polarity = default_NEC98_polarity(idx);
- break;
- }
- default:
- {
- printk(KERN_WARNING "broken BIOS!!\n");
- polarity = 1;
- break;
- }
- }
- break;
- }
- case 1: /* high active */
- {
- polarity = 0;
- break;
- }
- case 2: /* reserved */
- {
- printk(KERN_WARNING "broken BIOS!!\n");
- polarity = 1;
- break;
- }
- case 3: /* low active */
- {
- polarity = 1;
- break;
- }
- default: /* invalid */
- {
- printk(KERN_WARNING "broken BIOS!!\n");
- polarity = 1;
- break;
- }
- }
- return polarity;
-}
-
-static int MPBIOS_trigger(int idx)
-{
- int bus = mp_irqs[idx].mpc_srcbus;
- int trigger;
-
- /*
- * Determine IRQ trigger mode (edge or level sensitive):
- */
- switch ((mp_irqs[idx].mpc_irqflag>>2) & 3)
- {
- case 0: /* conforms, ie. bus-type dependent */
- {
- switch (mp_bus_id_to_type[bus])
- {
- case MP_BUS_ISA: /* ISA pin */
- {
- trigger = default_ISA_trigger(idx);
- break;
- }
- case MP_BUS_EISA: /* EISA pin */
- {
- trigger = default_EISA_trigger(idx);
- break;
- }
- case MP_BUS_PCI: /* PCI pin */
- {
- trigger = default_PCI_trigger(idx);
- break;
- }
- case MP_BUS_MCA: /* MCA pin */
- {
- trigger = default_MCA_trigger(idx);
- break;
- }
- case MP_BUS_NEC98: /* NEC 98 pin */
- {
- trigger = default_NEC98_trigger(idx);
- break;
- }
- default:
- {
- printk(KERN_WARNING "broken BIOS!!\n");
- trigger = 1;
- break;
- }
- }
- break;
- }
- case 1: /* edge */
- {
- trigger = 0;
- break;
- }
- case 2: /* reserved */
- {
- printk(KERN_WARNING "broken BIOS!!\n");
- trigger = 1;
- break;
- }
- case 3: /* level */
- {
- trigger = 1;
- break;
- }
- default: /* invalid */
- {
- printk(KERN_WARNING "broken BIOS!!\n");
- trigger = 0;
- break;
- }
- }
- return trigger;
-}
-
-static inline int irq_polarity(int idx)
-{
- return MPBIOS_polarity(idx);
-}
-
-static inline int irq_trigger(int idx)
-{
- return MPBIOS_trigger(idx);
-}
-
-static int pin_2_irq(int idx, int apic, int pin)
-{
- int irq, i;
- int bus = mp_irqs[idx].mpc_srcbus;
-
- /*
- * Debugging check, we are in big trouble if this message pops up!
- */
- if (mp_irqs[idx].mpc_dstirq != pin)
- printk(KERN_ERR "broken BIOS or MPTABLE parser, ayiee!!\n");
-
- switch (mp_bus_id_to_type[bus])
- {
- case MP_BUS_ISA: /* ISA pin */
- case MP_BUS_EISA:
- case MP_BUS_MCA:
- case MP_BUS_NEC98:
- {
- irq = mp_irqs[idx].mpc_srcbusirq;
- break;
- }
- case MP_BUS_PCI: /* PCI pin */
- {
- /*
- * PCI IRQs are mapped in order
- */
- i = irq = 0;
- while (i < apic)
- irq += nr_ioapic_registers[i++];
- irq += pin;
-
- /*
- * For MPS mode, so far only needed by ES7000 platform
- */
- if (ioapic_renumber_irq)
- irq = ioapic_renumber_irq(apic, irq);
-
- break;
- }
- default:
- {
- printk(KERN_ERR "unknown bus type %d.\n",bus);
- irq = 0;
- break;
- }
- }
-
- /*
- * PCI IRQ command line redirection. Yes, limits are hardcoded.
- */
- if ((pin >= 16) && (pin <= 23)) {
- if (pirq_entries[pin-16] != -1) {
- if (!pirq_entries[pin-16]) {
- apic_printk(APIC_VERBOSE, KERN_DEBUG
- "disabling PIRQ%d\n", pin-16);
- } else {
- irq = pirq_entries[pin-16];
- apic_printk(APIC_VERBOSE, KERN_DEBUG
- "using PIRQ%d -> IRQ %d\n",
- pin-16, irq);
- }
- }
- }
- return irq;
-}
-
-static inline int IO_APIC_irq_trigger(int irq)
-{
- int apic, idx, pin;
-
- for (apic = 0; apic < nr_ioapics; apic++) {
- for (pin = 0; pin < nr_ioapic_registers[apic]; pin++) {
- idx = find_irq_entry(apic,pin,mp_INT);
- if ((idx != -1) && (irq == pin_2_irq(idx,apic,pin)))
- return irq_trigger(idx);
- }
- }
- /*
- * nonexistent IRQs are edge default
- */
- return 0;
-}
-
-/* irq_vectors is indexed by the sum of all RTEs in all I/O APICs. */
-u8 irq_vector[NR_IRQ_VECTORS]; /* = { FIRST_DEVICE_VECTOR , 0 }; */
-
-int assign_irq_vector(int irq)
-{
- static int current_vector = FIRST_DEVICE_VECTOR;
- physdev_op_t op;
-
- BUG_ON(irq >= NR_IRQ_VECTORS);
- if (irq != AUTO_ASSIGN && IO_APIC_VECTOR(irq) > 0)
- return IO_APIC_VECTOR(irq);
-
- op.cmd = PHYSDEVOP_ASSIGN_VECTOR;
- op.u.irq_op.irq = irq;
- if (HYPERVISOR_physdev_op(&op))
- return -ENOSPC;
- current_vector = op.u.irq_op.vector;
-
- vector_irq[current_vector] = irq;
- if (irq != AUTO_ASSIGN)
- IO_APIC_VECTOR(irq) = current_vector;
-
- return current_vector;
-}
-
-#ifndef CONFIG_XEN
-static struct hw_interrupt_type ioapic_level_type;
-static struct hw_interrupt_type ioapic_edge_type;
-
-#define IOAPIC_AUTO -1
-#define IOAPIC_EDGE 0
-#define IOAPIC_LEVEL 1
-
-static inline void ioapic_register_intr(int irq, int vector, unsigned long
trigger)
-{
- if (use_pci_vector() && !platform_legacy_irq(irq)) {
- if ((trigger == IOAPIC_AUTO && IO_APIC_irq_trigger(irq)) ||
- trigger == IOAPIC_LEVEL)
- irq_desc[vector].handler = &ioapic_level_type;
- else
- irq_desc[vector].handler = &ioapic_edge_type;
- set_intr_gate(vector, interrupt[vector]);
- } else {
- if ((trigger == IOAPIC_AUTO && IO_APIC_irq_trigger(irq)) ||
- trigger == IOAPIC_LEVEL)
- irq_desc[irq].handler = &ioapic_level_type;
- else
- irq_desc[irq].handler = &ioapic_edge_type;
- set_intr_gate(vector, interrupt[irq]);
- }
-}
-#else
-#define ioapic_register_intr(_irq,_vector,_trigger) ((void)0)
-#endif
-
-void __init setup_IO_APIC_irqs(void)
-{
- struct IO_APIC_route_entry entry;
- int apic, pin, idx, irq, first_notcon = 1, vector;
- unsigned long flags;
-
- apic_printk(APIC_VERBOSE, KERN_DEBUG "init IO_APIC IRQs\n");
-
- for (apic = 0; apic < nr_ioapics; apic++) {
- for (pin = 0; pin < nr_ioapic_registers[apic]; pin++) {
-
- /*
- * add it to the IO-APIC irq-routing table:
- */
- memset(&entry,0,sizeof(entry));
-
- entry.delivery_mode = INT_DELIVERY_MODE;
- entry.dest_mode = INT_DEST_MODE;
- entry.mask = 0; /* enable IRQ */
- entry.dest.logical.logical_dest =
- cpu_mask_to_apicid(TARGET_CPUS);
-
- idx = find_irq_entry(apic,pin,mp_INT);
- if (idx == -1) {
- if (first_notcon) {
- apic_printk(APIC_VERBOSE, KERN_DEBUG
- " IO-APIC (apicid-pin) %d-%d",
- mp_ioapics[apic].mpc_apicid,
- pin);
- first_notcon = 0;
- } else
- apic_printk(APIC_VERBOSE, ", %d-%d",
- mp_ioapics[apic].mpc_apicid, pin);
- continue;
- }
-
- entry.trigger = irq_trigger(idx);
- entry.polarity = irq_polarity(idx);
-
- if (irq_trigger(idx)) {
- entry.trigger = 1;
- entry.mask = 1;
- }
-
- irq = pin_2_irq(idx, apic, pin);
- /*
- * skip adding the timer int on secondary nodes, which causes
- * a small but painful rift in the time-space continuum
- */
- if (multi_timer_check(apic, irq))
- continue;
- else
- add_pin_to_irq(irq, apic, pin);
-
- if (/*!apic &&*/ !IO_APIC_IRQ(irq))
- continue;
-
- if (IO_APIC_IRQ(irq)) {
- vector = assign_irq_vector(irq);
- entry.vector = vector;
- ioapic_register_intr(irq, vector, IOAPIC_AUTO);
-
- if (!apic && (irq < 16))
- disable_8259A_irq(irq);
- }
- spin_lock_irqsave(&ioapic_lock, flags);
- io_apic_write(apic, 0x11+2*pin, *(((int *)&entry)+1));
- io_apic_write(apic, 0x10+2*pin, *(((int *)&entry)+0));
- spin_unlock_irqrestore(&ioapic_lock, flags);
- }
- }
-
- if (!first_notcon)
- apic_printk(APIC_VERBOSE, " not connected.\n");
-}
-
-/*
- * Set up the 8259A-master output pin:
- */
-#ifndef CONFIG_XEN
-void __init setup_ExtINT_IRQ0_pin(unsigned int pin, int vector)
-{
- struct IO_APIC_route_entry entry;
- unsigned long flags;
-
- memset(&entry,0,sizeof(entry));
-
- disable_8259A_irq(0);
-
- /* mask LVT0 */
- apic_write_around(APIC_LVT0, APIC_LVT_MASKED | APIC_DM_EXTINT);
-
- /*
- * We use logical delivery to get the timer IRQ
- * to the first CPU.
- */
- entry.dest_mode = INT_DEST_MODE;
- entry.mask = 0; /* unmask IRQ now */
- entry.dest.logical.logical_dest = cpu_mask_to_apicid(TARGET_CPUS);
- entry.delivery_mode = INT_DELIVERY_MODE;
- entry.polarity = 0;
- entry.trigger = 0;
- entry.vector = vector;
-
- /*
- * The timer IRQ doesn't have to know that behind the
- * scene we have a 8259A-master in AEOI mode ...
- */
- irq_desc[0].handler = &ioapic_edge_type;
-
- /*
- * Add it to the IO-APIC irq-routing table:
- */
- spin_lock_irqsave(&ioapic_lock, flags);
- io_apic_write(0, 0x11+2*pin, *(((int *)&entry)+1));
- io_apic_write(0, 0x10+2*pin, *(((int *)&entry)+0));
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- enable_8259A_irq(0);
-}
-
-static inline void UNEXPECTED_IO_APIC(void)
-{
-}
-
-void __init print_IO_APIC(void)
-{
- int apic, i;
- union IO_APIC_reg_00 reg_00;
- union IO_APIC_reg_01 reg_01;
- union IO_APIC_reg_02 reg_02;
- union IO_APIC_reg_03 reg_03;
- unsigned long flags;
-
- if (apic_verbosity == APIC_QUIET)
- return;
-
- printk(KERN_DEBUG "number of MP IRQ sources: %d.\n", mp_irq_entries);
- for (i = 0; i < nr_ioapics; i++)
- printk(KERN_DEBUG "number of IO-APIC #%d registers: %d.\n",
- mp_ioapics[i].mpc_apicid, nr_ioapic_registers[i]);
-
- /*
- * We are a bit conservative about what we expect. We have to
- * know about every hardware change ASAP.
- */
- printk(KERN_INFO "testing the IO APIC.......................\n");
-
- for (apic = 0; apic < nr_ioapics; apic++) {
-
- spin_lock_irqsave(&ioapic_lock, flags);
- reg_00.raw = io_apic_read(apic, 0);
- reg_01.raw = io_apic_read(apic, 1);
- if (reg_01.bits.version >= 0x10)
- reg_02.raw = io_apic_read(apic, 2);
- if (reg_01.bits.version >= 0x20)
- reg_03.raw = io_apic_read(apic, 3);
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- printk(KERN_DEBUG "IO APIC #%d......\n", mp_ioapics[apic].mpc_apicid);
- printk(KERN_DEBUG ".... register #00: %08X\n", reg_00.raw);
- printk(KERN_DEBUG "....... : physical APIC id: %02X\n",
reg_00.bits.ID);
- printk(KERN_DEBUG "....... : Delivery Type: %X\n",
reg_00.bits.delivery_type);
- printk(KERN_DEBUG "....... : LTS : %X\n", reg_00.bits.LTS);
- if (reg_00.bits.ID >= get_physical_broadcast())
- UNEXPECTED_IO_APIC();
- if (reg_00.bits.__reserved_1 || reg_00.bits.__reserved_2)
- UNEXPECTED_IO_APIC();
-
- printk(KERN_DEBUG ".... register #01: %08X\n", reg_01.raw);
- printk(KERN_DEBUG "....... : max redirection entries: %04X\n",
reg_01.bits.entries);
- if ( (reg_01.bits.entries != 0x0f) && /* older (Neptune) boards */
- (reg_01.bits.entries != 0x17) && /* typical ISA+PCI boards */
- (reg_01.bits.entries != 0x1b) && /* Compaq Proliant boards */
- (reg_01.bits.entries != 0x1f) && /* dual Xeon boards */
- (reg_01.bits.entries != 0x22) && /* bigger Xeon boards */
- (reg_01.bits.entries != 0x2E) &&
- (reg_01.bits.entries != 0x3F)
- )
- UNEXPECTED_IO_APIC();
-
- printk(KERN_DEBUG "....... : PRQ implemented: %X\n",
reg_01.bits.PRQ);
- printk(KERN_DEBUG "....... : IO APIC version: %04X\n",
reg_01.bits.version);
- if ( (reg_01.bits.version != 0x01) && /* 82489DX IO-APICs */
- (reg_01.bits.version != 0x10) && /* oldest IO-APICs */
- (reg_01.bits.version != 0x11) && /* Pentium/Pro IO-APICs */
- (reg_01.bits.version != 0x13) && /* Xeon IO-APICs */
- (reg_01.bits.version != 0x20) /* Intel P64H (82806 AA) */
- )
- UNEXPECTED_IO_APIC();
- if (reg_01.bits.__reserved_1 || reg_01.bits.__reserved_2)
- UNEXPECTED_IO_APIC();
-
- /*
- * Some Intel chipsets with IO APIC VERSION of 0x1? don't have reg_02,
- * but the value of reg_02 is read as the previous read register
- * value, so ignore it if reg_02 == reg_01.
- */
- if (reg_01.bits.version >= 0x10 && reg_02.raw != reg_01.raw) {
- printk(KERN_DEBUG ".... register #02: %08X\n", reg_02.raw);
- printk(KERN_DEBUG "....... : arbitration: %02X\n",
reg_02.bits.arbitration);
- if (reg_02.bits.__reserved_1 || reg_02.bits.__reserved_2)
- UNEXPECTED_IO_APIC();
- }
-
- /*
- * Some Intel chipsets with IO APIC VERSION of 0x2? don't have reg_02
- * or reg_03, but the value of reg_0[23] is read as the previous read
- * register value, so ignore it if reg_03 == reg_0[12].
- */
- if (reg_01.bits.version >= 0x20 && reg_03.raw != reg_02.raw &&
- reg_03.raw != reg_01.raw) {
- printk(KERN_DEBUG ".... register #03: %08X\n", reg_03.raw);
- printk(KERN_DEBUG "....... : Boot DT : %X\n",
reg_03.bits.boot_DT);
- if (reg_03.bits.__reserved_1)
- UNEXPECTED_IO_APIC();
- }
-
- printk(KERN_DEBUG ".... IRQ redirection table:\n");
-
- printk(KERN_DEBUG " NR Log Phy Mask Trig IRR Pol"
- " Stat Dest Deli Vect: \n");
-
- for (i = 0; i <= reg_01.bits.entries; i++) {
- struct IO_APIC_route_entry entry;
-
- spin_lock_irqsave(&ioapic_lock, flags);
- *(((int *)&entry)+0) = io_apic_read(apic, 0x10+i*2);
- *(((int *)&entry)+1) = io_apic_read(apic, 0x11+i*2);
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- printk(KERN_DEBUG " %02x %03X %02X ",
- i,
- entry.dest.logical.logical_dest,
- entry.dest.physical.physical_dest
- );
-
- printk("%1d %1d %1d %1d %1d %1d %1d %02X\n",
- entry.mask,
- entry.trigger,
- entry.irr,
- entry.polarity,
- entry.delivery_status,
- entry.dest_mode,
- entry.delivery_mode,
- entry.vector
- );
- }
- }
- if (use_pci_vector())
- printk(KERN_INFO "Using vector-based indexing\n");
- printk(KERN_DEBUG "IRQ to pin mappings:\n");
- for (i = 0; i < NR_IRQS; i++) {
- struct irq_pin_list *entry = irq_2_pin + i;
- if (entry->pin < 0)
- continue;
- if (use_pci_vector() && !platform_legacy_irq(i))
- printk(KERN_DEBUG "IRQ%d ", IO_APIC_VECTOR(i));
- else
- printk(KERN_DEBUG "IRQ%d ", i);
- for (;;) {
- printk("-> %d:%d", entry->apic, entry->pin);
- if (!entry->next)
- break;
- entry = irq_2_pin + entry->next;
- }
- printk("\n");
- }
-
- printk(KERN_INFO ".................................... done.\n");
-
- return;
-}
-
-static void print_APIC_bitfield (int base)
-{
- unsigned int v;
- int i, j;
-
- if (apic_verbosity == APIC_QUIET)
- return;
-
- printk(KERN_DEBUG "0123456789abcdef0123456789abcdef\n" KERN_DEBUG);
- for (i = 0; i < 8; i++) {
- v = apic_read(base + i*0x10);
- for (j = 0; j < 32; j++) {
- if (v & (1<<j))
- printk("1");
- else
- printk("0");
- }
- printk("\n");
- }
-}
-
-void /*__init*/ print_local_APIC(void * dummy)
-{
- unsigned int v, ver, maxlvt;
-
- if (apic_verbosity == APIC_QUIET)
- return;
-
- printk("\n" KERN_DEBUG "printing local APIC contents on CPU#%d/%d:\n",
- smp_processor_id(), hard_smp_processor_id());
- v = apic_read(APIC_ID);
- printk(KERN_INFO "... APIC ID: %08x (%01x)\n", v, GET_APIC_ID(v));
- v = apic_read(APIC_LVR);
- printk(KERN_INFO "... APIC VERSION: %08x\n", v);
- ver = GET_APIC_VERSION(v);
- maxlvt = get_maxlvt();
-
- v = apic_read(APIC_TASKPRI);
- printk(KERN_DEBUG "... APIC TASKPRI: %08x (%02x)\n", v, v &
APIC_TPRI_MASK);
-
- if (APIC_INTEGRATED(ver)) { /* !82489DX */
- v = apic_read(APIC_ARBPRI);
- printk(KERN_DEBUG "... APIC ARBPRI: %08x (%02x)\n", v,
- v & APIC_ARBPRI_MASK);
- v = apic_read(APIC_PROCPRI);
- printk(KERN_DEBUG "... APIC PROCPRI: %08x\n", v);
- }
-
- v = apic_read(APIC_EOI);
- printk(KERN_DEBUG "... APIC EOI: %08x\n", v);
- v = apic_read(APIC_RRR);
- printk(KERN_DEBUG "... APIC RRR: %08x\n", v);
- v = apic_read(APIC_LDR);
- printk(KERN_DEBUG "... APIC LDR: %08x\n", v);
- v = apic_read(APIC_DFR);
- printk(KERN_DEBUG "... APIC DFR: %08x\n", v);
- v = apic_read(APIC_SPIV);
- printk(KERN_DEBUG "... APIC SPIV: %08x\n", v);
-
- printk(KERN_DEBUG "... APIC ISR field:\n");
- print_APIC_bitfield(APIC_ISR);
- printk(KERN_DEBUG "... APIC TMR field:\n");
- print_APIC_bitfield(APIC_TMR);
- printk(KERN_DEBUG "... APIC IRR field:\n");
- print_APIC_bitfield(APIC_IRR);
-
- if (APIC_INTEGRATED(ver)) { /* !82489DX */
- if (maxlvt > 3) /* Due to the Pentium erratum 3AP. */
- apic_write(APIC_ESR, 0);
- v = apic_read(APIC_ESR);
- printk(KERN_DEBUG "... APIC ESR: %08x\n", v);
- }
-
- v = apic_read(APIC_ICR);
- printk(KERN_DEBUG "... APIC ICR: %08x\n", v);
- v = apic_read(APIC_ICR2);
- printk(KERN_DEBUG "... APIC ICR2: %08x\n", v);
-
- v = apic_read(APIC_LVTT);
- printk(KERN_DEBUG "... APIC LVTT: %08x\n", v);
-
- if (maxlvt > 3) { /* PC is LVT#4. */
- v = apic_read(APIC_LVTPC);
- printk(KERN_DEBUG "... APIC LVTPC: %08x\n", v);
- }
- v = apic_read(APIC_LVT0);
- printk(KERN_DEBUG "... APIC LVT0: %08x\n", v);
- v = apic_read(APIC_LVT1);
- printk(KERN_DEBUG "... APIC LVT1: %08x\n", v);
-
- if (maxlvt > 2) { /* ERR is LVT#3. */
- v = apic_read(APIC_LVTERR);
- printk(KERN_DEBUG "... APIC LVTERR: %08x\n", v);
- }
-
- v = apic_read(APIC_TMICT);
- printk(KERN_DEBUG "... APIC TMICT: %08x\n", v);
- v = apic_read(APIC_TMCCT);
- printk(KERN_DEBUG "... APIC TMCCT: %08x\n", v);
- v = apic_read(APIC_TDCR);
- printk(KERN_DEBUG "... APIC TDCR: %08x\n", v);
- printk("\n");
-}
-
-void print_all_local_APICs (void)
-{
- on_each_cpu(print_local_APIC, NULL, 1, 1);
-}
-
-void /*__init*/ print_PIC(void)
-{
- extern spinlock_t i8259A_lock;
- unsigned int v;
- unsigned long flags;
-
- if (apic_verbosity == APIC_QUIET)
- return;
-
- printk(KERN_DEBUG "\nprinting PIC contents\n");
-
- spin_lock_irqsave(&i8259A_lock, flags);
-
- v = inb(0xa1) << 8 | inb(0x21);
- printk(KERN_DEBUG "... PIC IMR: %04x\n", v);
-
- v = inb(0xa0) << 8 | inb(0x20);
- printk(KERN_DEBUG "... PIC IRR: %04x\n", v);
-
- outb(0x0b,0xa0);
- outb(0x0b,0x20);
- v = inb(0xa0) << 8 | inb(0x20);
- outb(0x0a,0xa0);
- outb(0x0a,0x20);
-
- spin_unlock_irqrestore(&i8259A_lock, flags);
-
- printk(KERN_DEBUG "... PIC ISR: %04x\n", v);
-
- v = inb(0x4d1) << 8 | inb(0x4d0);
- printk(KERN_DEBUG "... PIC ELCR: %04x\n", v);
-}
-#else
-void __init print_IO_APIC(void) { }
-#endif /* !CONFIG_XEN */
-
-static void __init enable_IO_APIC(void)
-{
- union IO_APIC_reg_01 reg_01;
- int i;
- unsigned long flags;
-
- for (i = 0; i < PIN_MAP_SIZE; i++) {
- irq_2_pin[i].pin = -1;
- irq_2_pin[i].next = 0;
- }
- if (!pirqs_enabled)
- for (i = 0; i < MAX_PIRQS; i++)
- pirq_entries[i] = -1;
-
- /*
- * The number of IO-APIC IRQ registers (== #pins):
- */
- for (i = 0; i < nr_ioapics; i++) {
- spin_lock_irqsave(&ioapic_lock, flags);
- reg_01.raw = io_apic_read(i, 1);
- spin_unlock_irqrestore(&ioapic_lock, flags);
- nr_ioapic_registers[i] = reg_01.bits.entries+1;
- }
-
- /*
- * Do not trust the IO-APIC being empty at bootup
- */
- clear_IO_APIC();
-}
-
-/*
- * Not an __init, needed by the reboot code
- */
-void disable_IO_APIC(void)
-{
- /*
- * Clear the IO-APIC before rebooting:
- */
- clear_IO_APIC();
-
-#ifndef CONFIG_XEN
- disconnect_bsp_APIC();
-#endif
-}
-
-/*
- * function to set the IO-APIC physical IDs based on the
- * values stored in the MPC table.
- *
- * by Matt Domsch <Matt_Domsch@xxxxxxxx> Tue Dec 21 12:25:05 CST 1999
- */
-
-#if !defined(CONFIG_XEN) && !defined(CONFIG_X86_NUMAQ)
-static void __init setup_ioapic_ids_from_mpc(void)
-{
- union IO_APIC_reg_00 reg_00;
- physid_mask_t phys_id_present_map;
- int apic;
- int i;
- unsigned char old_id;
- unsigned long flags;
-
- /*
- * This is broken; anything with a real cpu count has to
- * circumvent this idiocy regardless.
- */
- phys_id_present_map = ioapic_phys_id_map(phys_cpu_present_map);
-
- /*
- * Set the IOAPIC ID to the value stored in the MPC table.
- */
- for (apic = 0; apic < nr_ioapics; apic++) {
-
- /* Read the register 0 value */
- spin_lock_irqsave(&ioapic_lock, flags);
- reg_00.raw = io_apic_read(apic, 0);
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- old_id = mp_ioapics[apic].mpc_apicid;
-
- if (mp_ioapics[apic].mpc_apicid >= get_physical_broadcast()) {
- printk(KERN_ERR "BIOS bug, IO-APIC#%d ID is %d in the
MPC table!...\n",
- apic, mp_ioapics[apic].mpc_apicid);
- printk(KERN_ERR "... fixing up to %d. (tell your hw
vendor)\n",
- reg_00.bits.ID);
- mp_ioapics[apic].mpc_apicid = reg_00.bits.ID;
- }
-
- /* Don't check I/O APIC IDs for some xAPIC systems. They have
- * no meaning without the serial APIC bus. */
- if (NO_IOAPIC_CHECK)
- continue;
- /*
- * Sanity check, is the ID really free? Every APIC in a
- * system must have a unique ID or we get lots of nice
- * 'stuck on smp_invalidate_needed IPI wait' messages.
- */
- if (check_apicid_used(phys_id_present_map,
- mp_ioapics[apic].mpc_apicid)) {
- printk(KERN_ERR "BIOS bug, IO-APIC#%d ID %d is already
used!...\n",
- apic, mp_ioapics[apic].mpc_apicid);
- for (i = 0; i < get_physical_broadcast(); i++)
- if (!physid_isset(i, phys_id_present_map))
- break;
- if (i >= get_physical_broadcast())
- panic("Max APIC ID exceeded!\n");
- printk(KERN_ERR "... fixing up to %d. (tell your hw
vendor)\n",
- i);
- physid_set(i, phys_id_present_map);
- mp_ioapics[apic].mpc_apicid = i;
- } else {
- physid_mask_t tmp;
- tmp =
apicid_to_cpu_present(mp_ioapics[apic].mpc_apicid);
- apic_printk(APIC_VERBOSE, "Setting %d in the "
- "phys_id_present_map\n",
- mp_ioapics[apic].mpc_apicid);
- physids_or(phys_id_present_map, phys_id_present_map,
tmp);
- }
-
-
- /*
- * We need to adjust the IRQ routing table
- * if the ID changed.
- */
- if (old_id != mp_ioapics[apic].mpc_apicid)
- for (i = 0; i < mp_irq_entries; i++)
- if (mp_irqs[i].mpc_dstapic == old_id)
- mp_irqs[i].mpc_dstapic
- = mp_ioapics[apic].mpc_apicid;
-
- /*
- * Read the right value from the MPC table and
- * write it into the ID register.
- */
- apic_printk(APIC_VERBOSE, KERN_INFO
- "...changing IO-APIC physical APIC ID to %d ...",
- mp_ioapics[apic].mpc_apicid);
-
- reg_00.bits.ID = mp_ioapics[apic].mpc_apicid;
- spin_lock_irqsave(&ioapic_lock, flags);
- io_apic_write(apic, 0, reg_00.raw);
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- /*
- * Sanity check
- */
- spin_lock_irqsave(&ioapic_lock, flags);
- reg_00.raw = io_apic_read(apic, 0);
- spin_unlock_irqrestore(&ioapic_lock, flags);
- if (reg_00.bits.ID != mp_ioapics[apic].mpc_apicid)
- printk("could not set ID!\n");
- else
- apic_printk(APIC_VERBOSE, " ok.\n");
- }
-}
-#else
-static void __init setup_ioapic_ids_from_mpc(void) { }
-#endif
-
-#ifndef CONFIG_XEN
-/*
- * There is a nasty bug in some older SMP boards, their mptable lies
- * about the timer IRQ. We do the following to work around the situation:
- *
- * - timer IRQ defaults to IO-APIC IRQ
- * - if this function detects that timer IRQs are defunct, then we fall
- * back to ISA timer IRQs
- */
-static int __init timer_irq_works(void)
-{
- unsigned long t1 = jiffies;
-
- local_irq_enable();
- /* Let ten ticks pass... */
- mdelay((10 * 1000) / HZ);
-
- /*
- * Expect a few ticks at least, to be sure some possible
- * glue logic does not lock up after one or two first
- * ticks in a non-ExtINT mode. Also the local APIC
- * might have cached one ExtINT interrupt. Finally, at
- * least one tick may be lost due to delays.
- */
- if (jiffies - t1 > 4)
- return 1;
-
- return 0;
-}
-
-/*
- * In the SMP+IOAPIC case it might happen that there are an unspecified
- * number of pending IRQ events unhandled. These cases are very rare,
- * so we 'resend' these IRQs via IPIs, to the same CPU. It's much
- * better to do it this way as thus we do not have to be aware of
- * 'pending' interrupts in the IRQ path, except at this point.
- */
-/*
- * Edge triggered needs to resend any interrupt
- * that was delayed but this is now handled in the device
- * independent code.
- */
-
-/*
- * Starting up a edge-triggered IO-APIC interrupt is
- * nasty - we need to make sure that we get the edge.
- * If it is already asserted for some reason, we need
- * return 1 to indicate that is was pending.
- *
- * This is not complete - we should be able to fake
- * an edge even if it isn't on the 8259A...
- */
-static unsigned int startup_edge_ioapic_irq(unsigned int irq)
-{
- int was_pending = 0;
- unsigned long flags;
-
- spin_lock_irqsave(&ioapic_lock, flags);
- if (irq < 16) {
- disable_8259A_irq(irq);
- if (i8259A_irq_pending(irq))
- was_pending = 1;
- }
- __unmask_IO_APIC_irq(irq);
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- return was_pending;
-}
-
-/*
- * Once we have recorded IRQ_PENDING already, we can mask the
- * interrupt for real. This prevents IRQ storms from unhandled
- * devices.
- */
-static void ack_edge_ioapic_irq(unsigned int irq)
-{
- move_irq(irq);
- if ((irq_desc[irq].status & (IRQ_PENDING | IRQ_DISABLED))
- == (IRQ_PENDING | IRQ_DISABLED))
- mask_IO_APIC_irq(irq);
- ack_APIC_irq();
-}
-
-/*
- * Level triggered interrupts can just be masked,
- * and shutting down and starting up the interrupt
- * is the same as enabling and disabling them -- except
- * with a startup need to return a "was pending" value.
- *
- * Level triggered interrupts are special because we
- * do not touch any IO-APIC register while handling
- * them. We ack the APIC in the end-IRQ handler, not
- * in the start-IRQ-handler. Protection against reentrance
- * from the same interrupt is still provided, both by the
- * generic IRQ layer and by the fact that an unacked local
- * APIC does not accept IRQs.
- */
-static unsigned int startup_level_ioapic_irq (unsigned int irq)
-{
- unmask_IO_APIC_irq(irq);
-
- return 0; /* don't check for pending */
-}
-
-static void end_level_ioapic_irq (unsigned int irq)
-{
- unsigned long v;
- int i;
-
- move_irq(irq);
-/*
- * It appears there is an erratum which affects at least version 0x11
- * of I/O APIC (that's the 82093AA and cores integrated into various
- * chipsets). Under certain conditions a level-triggered interrupt is
- * erroneously delivered as edge-triggered one but the respective IRR
- * bit gets set nevertheless. As a result the I/O unit expects an EOI
- * message but it will never arrive and further interrupts are blocked
- * from the source. The exact reason is so far unknown, but the
- * phenomenon was observed when two consecutive interrupt requests
- * from a given source get delivered to the same CPU and the source is
- * temporarily disabled in between.
- *
- * A workaround is to simulate an EOI message manually. We achieve it
- * by setting the trigger mode to edge and then to level when the edge
- * trigger mode gets detected in the TMR of a local APIC for a
- * level-triggered interrupt. We mask the source for the time of the
- * operation to prevent an edge-triggered interrupt escaping meanwhile.
- * The idea is from Manfred Spraul. --macro
- */
- i = IO_APIC_VECTOR(irq);
-
- v = apic_read(APIC_TMR + ((i & ~0x1f) >> 1));
-
- ack_APIC_irq();
-
- if (!(v & (1 << (i & 0x1f)))) {
- atomic_inc(&irq_mis_count);
- spin_lock(&ioapic_lock);
- __mask_and_edge_IO_APIC_irq(irq);
- __unmask_and_level_IO_APIC_irq(irq);
- spin_unlock(&ioapic_lock);
- }
-}
-
-#ifdef CONFIG_PCI_MSI
-static unsigned int startup_edge_ioapic_vector(unsigned int vector)
-{
- int irq = vector_to_irq(vector);
-
- return startup_edge_ioapic_irq(irq);
-}
-
-static void ack_edge_ioapic_vector(unsigned int vector)
-{
- int irq = vector_to_irq(vector);
-
- ack_edge_ioapic_irq(irq);
-}
-
-static unsigned int startup_level_ioapic_vector (unsigned int vector)
-{
- int irq = vector_to_irq(vector);
-
- return startup_level_ioapic_irq (irq);
-}
-
-static void end_level_ioapic_vector (unsigned int vector)
-{
- int irq = vector_to_irq(vector);
-
- end_level_ioapic_irq(irq);
-}
-
-static void mask_IO_APIC_vector (unsigned int vector)
-{
- int irq = vector_to_irq(vector);
-
- mask_IO_APIC_irq(irq);
-}
-
-static void unmask_IO_APIC_vector (unsigned int vector)
-{
- int irq = vector_to_irq(vector);
-
- unmask_IO_APIC_irq(irq);
-}
-
-static void set_ioapic_affinity_vector (unsigned int vector,
- cpumask_t cpu_mask)
-{
- int irq = vector_to_irq(vector);
-
- set_ioapic_affinity_irq(irq, cpu_mask);
-}
-#endif
-
-/*
- * Level and edge triggered IO-APIC interrupts need different handling,
- * so we use two separate IRQ descriptors. Edge triggered IRQs can be
- * handled with the level-triggered descriptor, but that one has slightly
- * more overhead. Level-triggered interrupts cannot be handled with the
- * edge-triggered handler, without risking IRQ storms and other ugly
- * races.
- */
-static struct hw_interrupt_type ioapic_edge_type = {
- .typename = "IO-APIC-edge",
- .startup = startup_edge_ioapic,
- .shutdown = shutdown_edge_ioapic,
- .enable = enable_edge_ioapic,
- .disable = disable_edge_ioapic,
- .ack = ack_edge_ioapic,
- .end = end_edge_ioapic,
- .set_affinity = set_ioapic_affinity,
-};
-
-static struct hw_interrupt_type ioapic_level_type = {
- .typename = "IO-APIC-level",
- .startup = startup_level_ioapic,
- .shutdown = shutdown_level_ioapic,
- .enable = enable_level_ioapic,
- .disable = disable_level_ioapic,
- .ack = mask_and_ack_level_ioapic,
- .end = end_level_ioapic,
- .set_affinity = set_ioapic_affinity,
-};
-#endif /* !CONFIG_XEN */
-
-static inline void init_IO_APIC_traps(void)
-{
- int irq;
-
- /*
- * NOTE! The local APIC isn't very good at handling
- * multiple interrupts at the same interrupt level.
- * As the interrupt level is determined by taking the
- * vector number and shifting that right by 4, we
- * want to spread these out a bit so that they don't
- * all fall in the same interrupt level.
- *
- * Also, we've got to be careful not to trash gate
- * 0x80, because int 0x80 is hm, kind of importantish. ;)
- */
- for (irq = 0; irq < NR_IRQS ; irq++) {
- int tmp = irq;
- if (use_pci_vector()) {
- if (!platform_legacy_irq(tmp))
- if ((tmp = vector_to_irq(tmp)) == -1)
- continue;
- }
- if (IO_APIC_IRQ(tmp) && !IO_APIC_VECTOR(tmp)) {
- /*
- * Hmm.. We don't have an entry for this,
- * so default to an old-fashioned 8259
- * interrupt if we can..
- */
- if (irq < 16)
- make_8259A_irq(irq);
-#ifndef CONFIG_XEN
- else
- /* Strange. Oh, well.. */
- irq_desc[irq].handler = &no_irq_type;
-#endif
- }
- }
-}
-
-#ifndef CONFIG_XEN
-static void enable_lapic_irq (unsigned int irq)
-{
- unsigned long v;
-
- v = apic_read(APIC_LVT0);
- apic_write_around(APIC_LVT0, v & ~APIC_LVT_MASKED);
-}
-
-static void disable_lapic_irq (unsigned int irq)
-{
- unsigned long v;
-
- v = apic_read(APIC_LVT0);
- apic_write_around(APIC_LVT0, v | APIC_LVT_MASKED);
-}
-
-static void ack_lapic_irq (unsigned int irq)
-{
- ack_APIC_irq();
-}
-
-static void end_lapic_irq (unsigned int i) { /* nothing */ }
-
-static struct hw_interrupt_type lapic_irq_type = {
- .typename = "local-APIC-edge",
- .startup = NULL, /* startup_irq() not used for IRQ0 */
- .shutdown = NULL, /* shutdown_irq() not used for IRQ0 */
- .enable = enable_lapic_irq,
- .disable = disable_lapic_irq,
- .ack = ack_lapic_irq,
- .end = end_lapic_irq
-};
-
-static void setup_nmi (void)
-{
- /*
- * Dirty trick to enable the NMI watchdog ...
- * We put the 8259A master into AEOI mode and
- * unmask on all local APICs LVT0 as NMI.
- *
- * The idea to use the 8259A in AEOI mode ('8259A Virtual Wire')
- * is from Maciej W. Rozycki - so we do not have to EOI from
- * the NMI handler or the timer interrupt.
- */
- apic_printk(APIC_VERBOSE, KERN_INFO "activating NMI Watchdog ...");
-
- on_each_cpu(enable_NMI_through_LVT0, NULL, 1, 1);
-
- apic_printk(APIC_VERBOSE, " done.\n");
-}
-
-/*
- * This looks a bit hackish but it's about the only one way of sending
- * a few INTA cycles to 8259As and any associated glue logic. ICR does
- * not support the ExtINT mode, unfortunately. We need to send these
- * cycles as some i82489DX-based boards have glue logic that keeps the
- * 8259A interrupt line asserted until INTA. --macro
- */
-static inline void unlock_ExtINT_logic(void)
-{
- int pin, i;
- struct IO_APIC_route_entry entry0, entry1;
- unsigned char save_control, save_freq_select;
- unsigned long flags;
-
- pin = find_isa_irq_pin(8, mp_INT);
- if (pin == -1)
- return;
-
- spin_lock_irqsave(&ioapic_lock, flags);
- *(((int *)&entry0) + 1) = io_apic_read(0, 0x11 + 2 * pin);
- *(((int *)&entry0) + 0) = io_apic_read(0, 0x10 + 2 * pin);
- spin_unlock_irqrestore(&ioapic_lock, flags);
- clear_IO_APIC_pin(0, pin);
-
- memset(&entry1, 0, sizeof(entry1));
-
- entry1.dest_mode = 0; /* physical delivery */
- entry1.mask = 0; /* unmask IRQ now */
- entry1.dest.physical.physical_dest = hard_smp_processor_id();
- entry1.delivery_mode = dest_ExtINT;
- entry1.polarity = entry0.polarity;
- entry1.trigger = 0;
- entry1.vector = 0;
-
- spin_lock_irqsave(&ioapic_lock, flags);
- io_apic_write(0, 0x11 + 2 * pin, *(((int *)&entry1) + 1));
- io_apic_write(0, 0x10 + 2 * pin, *(((int *)&entry1) + 0));
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- save_control = CMOS_READ(RTC_CONTROL);
- save_freq_select = CMOS_READ(RTC_FREQ_SELECT);
- CMOS_WRITE((save_freq_select & ~RTC_RATE_SELECT) | 0x6,
- RTC_FREQ_SELECT);
- CMOS_WRITE(save_control | RTC_PIE, RTC_CONTROL);
-
- i = 100;
- while (i-- > 0) {
- mdelay(10);
- if ((CMOS_READ(RTC_INTR_FLAGS) & RTC_PF) == RTC_PF)
- i -= 10;
- }
-
- CMOS_WRITE(save_control, RTC_CONTROL);
- CMOS_WRITE(save_freq_select, RTC_FREQ_SELECT);
- clear_IO_APIC_pin(0, pin);
-
- spin_lock_irqsave(&ioapic_lock, flags);
- io_apic_write(0, 0x11 + 2 * pin, *(((int *)&entry0) + 1));
- io_apic_write(0, 0x10 + 2 * pin, *(((int *)&entry0) + 0));
- spin_unlock_irqrestore(&ioapic_lock, flags);
-}
-
-/*
- * This code may look a bit paranoid, but it's supposed to cooperate with
- * a wide range of boards and BIOS bugs. Fortunately only the timer IRQ
- * is so screwy. Thanks to Brian Perkins for testing/hacking this beast
- * fanatically on his truly buggy board.
- */
-static inline void check_timer(void)
-{
- int pin1, pin2;
- int vector;
-
- /*
- * get/set the timer IRQ vector:
- */
- disable_8259A_irq(0);
- vector = assign_irq_vector(0);
- set_intr_gate(vector, interrupt[0]);
-
- /*
- * Subtle, code in do_timer_interrupt() expects an AEOI
- * mode for the 8259A whenever interrupts are routed
- * through I/O APICs. Also IRQ0 has to be enabled in
- * the 8259A which implies the virtual wire has to be
- * disabled in the local APIC.
- */
- apic_write_around(APIC_LVT0, APIC_LVT_MASKED | APIC_DM_EXTINT);
- init_8259A(1);
- timer_ack = 1;
- enable_8259A_irq(0);
-
- pin1 = find_isa_irq_pin(0, mp_INT);
- pin2 = find_isa_irq_pin(0, mp_ExtINT);
-
- printk(KERN_INFO "..TIMER: vector=0x%02X pin1=%d pin2=%d\n", vector,
pin1, pin2);
-
- if (pin1 != -1) {
- /*
- * Ok, does IRQ0 through the IOAPIC work?
- */
- unmask_IO_APIC_irq(0);
- if (timer_irq_works()) {
- if (nmi_watchdog == NMI_IO_APIC) {
- disable_8259A_irq(0);
- setup_nmi();
- enable_8259A_irq(0);
- check_nmi_watchdog();
- }
- return;
- }
- clear_IO_APIC_pin(0, pin1);
- printk(KERN_ERR "..MP-BIOS bug: 8254 timer not connected to
IO-APIC\n");
- }
-
- printk(KERN_INFO "...trying to set up timer (IRQ0) through the 8259A
... ");
- if (pin2 != -1) {
- printk("\n..... (found pin %d) ...", pin2);
- /*
- * legacy devices should be connected to IO APIC #0
- */
- setup_ExtINT_IRQ0_pin(pin2, vector);
- if (timer_irq_works()) {
- printk("works.\n");
- if (pin1 != -1)
- replace_pin_at_irq(0, 0, pin1, 0, pin2);
- else
- add_pin_to_irq(0, 0, pin2);
- if (nmi_watchdog == NMI_IO_APIC) {
- setup_nmi();
- check_nmi_watchdog();
- }
- return;
- }
- /*
- * Cleanup, just in case ...
- */
- clear_IO_APIC_pin(0, pin2);
- }
- printk(" failed.\n");
-
- if (nmi_watchdog == NMI_IO_APIC) {
- printk(KERN_WARNING "timer doesn't work through the IO-APIC -
disabling NMI Watchdog!\n");
- nmi_watchdog = 0;
- }
-
- printk(KERN_INFO "...trying to set up timer as Virtual Wire IRQ...");
-
- disable_8259A_irq(0);
- irq_desc[0].handler = &lapic_irq_type;
- apic_write_around(APIC_LVT0, APIC_DM_FIXED | vector); /* Fixed mode */
- enable_8259A_irq(0);
-
- if (timer_irq_works()) {
- printk(" works.\n");
- return;
- }
- apic_write_around(APIC_LVT0, APIC_LVT_MASKED | APIC_DM_FIXED | vector);
- printk(" failed.\n");
-
- printk(KERN_INFO "...trying to set up timer as ExtINT IRQ...");
-
- timer_ack = 0;
- init_8259A(0);
- make_8259A_irq(0);
- apic_write_around(APIC_LVT0, APIC_DM_EXTINT);
-
- unlock_ExtINT_logic();
-
- if (timer_irq_works()) {
- printk(" works.\n");
- return;
- }
- printk(" failed :(.\n");
- panic("IO-APIC + timer doesn't work! Boot with apic=debug and send a "
- "report. Then try booting with the 'noapic' option");
-}
-#else
-#define check_timer() ((void)0)
-#endif
-
-/*
- *
- * IRQ's that are handled by the PIC in the MPS IOAPIC case.
- * - IRQ2 is the cascade IRQ, and cannot be a io-apic IRQ.
- * Linux doesn't really care, as it's not actually used
- * for any interrupt handling anyway.
- */
-#define PIC_IRQS (1 << PIC_CASCADE_IR)
-
-void __init setup_IO_APIC(void)
-{
- enable_IO_APIC();
-
- if (acpi_ioapic)
- io_apic_irqs = ~0; /* all IRQs go through IOAPIC */
- else
- io_apic_irqs = ~PIC_IRQS;
-
- printk("ENABLING IO-APIC IRQs\n");
-
- /*
- * Set up IO-APIC IRQ routing.
- */
- if (!acpi_ioapic)
- setup_ioapic_ids_from_mpc();
-#ifndef CONFIG_XEN
- sync_Arb_IDs();
-#endif
- setup_IO_APIC_irqs();
- init_IO_APIC_traps();
- check_timer();
- if (!acpi_ioapic)
- print_IO_APIC();
-}
-
-/*
- * Called after all the initialization is done. If we didnt find any
- * APIC bugs then we can allow the modify fast path
- */
-
-static int __init io_apic_bug_finalize(void)
-{
- if(sis_apic_bug == -1)
- sis_apic_bug = 0;
- return 0;
-}
-
-late_initcall(io_apic_bug_finalize);
-
-struct sysfs_ioapic_data {
- struct sys_device dev;
- struct IO_APIC_route_entry entry[0];
-};
-static struct sysfs_ioapic_data * mp_ioapic_data[MAX_IO_APICS];
-
-static int ioapic_suspend(struct sys_device *dev, u32 state)
-{
- struct IO_APIC_route_entry *entry;
- struct sysfs_ioapic_data *data;
- unsigned long flags;
- int i;
-
- data = container_of(dev, struct sysfs_ioapic_data, dev);
- entry = data->entry;
- spin_lock_irqsave(&ioapic_lock, flags);
- for (i = 0; i < nr_ioapic_registers[dev->id]; i ++, entry ++ ) {
- *(((int *)entry) + 1) = io_apic_read(dev->id, 0x11 + 2 * i);
- *(((int *)entry) + 0) = io_apic_read(dev->id, 0x10 + 2 * i);
- }
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- return 0;
-}
-
-static int ioapic_resume(struct sys_device *dev)
-{
- struct IO_APIC_route_entry *entry;
- struct sysfs_ioapic_data *data;
- unsigned long flags;
- union IO_APIC_reg_00 reg_00;
- int i;
-
- data = container_of(dev, struct sysfs_ioapic_data, dev);
- entry = data->entry;
-
- spin_lock_irqsave(&ioapic_lock, flags);
- reg_00.raw = io_apic_read(dev->id, 0);
- if (reg_00.bits.ID != mp_ioapics[dev->id].mpc_apicid) {
- reg_00.bits.ID = mp_ioapics[dev->id].mpc_apicid;
- io_apic_write(dev->id, 0, reg_00.raw);
- }
- for (i = 0; i < nr_ioapic_registers[dev->id]; i ++, entry ++ ) {
- io_apic_write(dev->id, 0x11+2*i, *(((int *)entry)+1));
- io_apic_write(dev->id, 0x10+2*i, *(((int *)entry)+0));
- }
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- return 0;
-}
-
-static struct sysdev_class ioapic_sysdev_class = {
- set_kset_name("ioapic"),
- .suspend = ioapic_suspend,
- .resume = ioapic_resume,
-};
-
-static int __init ioapic_init_sysfs(void)
-{
- struct sys_device * dev;
- int i, size, error = 0;
-
- error = sysdev_class_register(&ioapic_sysdev_class);
- if (error)
- return error;
-
- for (i = 0; i < nr_ioapics; i++ ) {
- size = sizeof(struct sys_device) + nr_ioapic_registers[i]
- * sizeof(struct IO_APIC_route_entry);
- mp_ioapic_data[i] = kmalloc(size, GFP_KERNEL);
- if (!mp_ioapic_data[i]) {
- printk(KERN_ERR "Can't suspend/resume IOAPIC %d\n", i);
- continue;
- }
- memset(mp_ioapic_data[i], 0, size);
- dev = &mp_ioapic_data[i]->dev;
- dev->id = i;
- dev->cls = &ioapic_sysdev_class;
- error = sysdev_register(dev);
- if (error) {
- kfree(mp_ioapic_data[i]);
- mp_ioapic_data[i] = NULL;
- printk(KERN_ERR "Can't suspend/resume IOAPIC %d\n", i);
- continue;
- }
- }
-
- return 0;
-}
-
-device_initcall(ioapic_init_sysfs);
-
-/* --------------------------------------------------------------------------
- ACPI-based IOAPIC Configuration
- --------------------------------------------------------------------------
*/
-
-#ifdef CONFIG_ACPI_BOOT
-
-int __init io_apic_get_unique_id (int ioapic, int apic_id)
-{
-#ifndef CONFIG_XEN
- union IO_APIC_reg_00 reg_00;
- static physid_mask_t apic_id_map = PHYSID_MASK_NONE;
- physid_mask_t tmp;
- unsigned long flags;
- int i = 0;
-
- /*
- * The P4 platform supports up to 256 APIC IDs on two separate APIC
- * buses (one for LAPICs, one for IOAPICs), where predecessors only
- * supports up to 16 on one shared APIC bus.
- *
- * TBD: Expand LAPIC/IOAPIC support on P4-class systems to take full
- * advantage of new APIC bus architecture.
- */
-
- if (physids_empty(apic_id_map))
- apic_id_map = ioapic_phys_id_map(phys_cpu_present_map);
-
- spin_lock_irqsave(&ioapic_lock, flags);
- reg_00.raw = io_apic_read(ioapic, 0);
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- if (apic_id >= get_physical_broadcast()) {
- printk(KERN_WARNING "IOAPIC[%d]: Invalid apic_id %d, trying "
- "%d\n", ioapic, apic_id, reg_00.bits.ID);
- apic_id = reg_00.bits.ID;
- }
-
- /*
- * Every APIC in a system must have a unique ID or we get lots of nice
- * 'stuck on smp_invalidate_needed IPI wait' messages.
- */
- if (check_apicid_used(apic_id_map, apic_id)) {
-
- for (i = 0; i < get_physical_broadcast(); i++) {
- if (!check_apicid_used(apic_id_map, i))
- break;
- }
-
- if (i == get_physical_broadcast())
- panic("Max apic_id exceeded!\n");
-
- printk(KERN_WARNING "IOAPIC[%d]: apic_id %d already used, "
- "trying %d\n", ioapic, apic_id, i);
-
- apic_id = i;
- }
-
- tmp = apicid_to_cpu_present(apic_id);
- physids_or(apic_id_map, apic_id_map, tmp);
-
- if (reg_00.bits.ID != apic_id) {
- reg_00.bits.ID = apic_id;
-
- spin_lock_irqsave(&ioapic_lock, flags);
- io_apic_write(ioapic, 0, reg_00.raw);
- reg_00.raw = io_apic_read(ioapic, 0);
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- /* Sanity check */
- if (reg_00.bits.ID != apic_id)
- panic("IOAPIC[%d]: Unable change apic_id!\n", ioapic);
- }
-
- apic_printk(APIC_VERBOSE, KERN_INFO
- "IOAPIC[%d]: Assigned apic_id %d\n", ioapic, apic_id);
-#endif /* !CONFIG_XEN */
-
- return apic_id;
-}
-
-
-int __init io_apic_get_version (int ioapic)
-{
- union IO_APIC_reg_01 reg_01;
- unsigned long flags;
-
- spin_lock_irqsave(&ioapic_lock, flags);
- reg_01.raw = io_apic_read(ioapic, 1);
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- return reg_01.bits.version;
-}
-
-
-int __init io_apic_get_redir_entries (int ioapic)
-{
- union IO_APIC_reg_01 reg_01;
- unsigned long flags;
-
- spin_lock_irqsave(&ioapic_lock, flags);
- reg_01.raw = io_apic_read(ioapic, 1);
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- return reg_01.bits.entries;
-}
-
-
-int io_apic_set_pci_routing (int ioapic, int pin, int irq, int edge_level, int
active_high_low)
-{
- struct IO_APIC_route_entry entry;
- unsigned long flags;
-
- if (!IO_APIC_IRQ(irq)) {
- printk(KERN_ERR "IOAPIC[%d]: Invalid reference to IRQ 0\n",
- ioapic);
- return -EINVAL;
- }
-
- /*
- * Generate a PCI IRQ routing entry and program the IOAPIC accordingly.
- * Note that we mask (disable) IRQs now -- these get enabled when the
- * corresponding device driver registers for this IRQ.
- */
-
- memset(&entry,0,sizeof(entry));
-
- entry.delivery_mode = INT_DELIVERY_MODE;
- entry.dest_mode = INT_DEST_MODE;
- entry.dest.logical.logical_dest = cpu_mask_to_apicid(TARGET_CPUS);
- entry.trigger = edge_level;
- entry.polarity = active_high_low;
- entry.mask = 1;
-
- /*
- * IRQs < 16 are already in the irq_2_pin[] map
- */
- if (irq >= 16)
- add_pin_to_irq(irq, ioapic, pin);
-
- entry.vector = assign_irq_vector(irq);
-
- apic_printk(APIC_DEBUG, KERN_DEBUG "IOAPIC[%d]: Set PCI routing entry "
- "(%d-%d -> 0x%x -> IRQ %d Mode:%i Active:%i)\n", ioapic,
- mp_ioapics[ioapic].mpc_apicid, pin, entry.vector, irq,
- edge_level, active_high_low);
-
- ioapic_register_intr(irq, entry.vector, edge_level);
-
- if (!ioapic && (irq < 16))
- disable_8259A_irq(irq);
-
- spin_lock_irqsave(&ioapic_lock, flags);
- io_apic_write(ioapic, 0x11+2*pin, *(((int *)&entry)+1));
- io_apic_write(ioapic, 0x10+2*pin, *(((int *)&entry)+0));
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- return 0;
-}
-
-#endif /*CONFIG_ACPI_BOOT*/
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/ioport.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/ioport.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,129 +0,0 @@
-/*
- * linux/arch/i386/kernel/ioport.c
- *
- * This contains the io-permission bitmap code - written by obz, with changes
- * by Linus.
- */
-
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/types.h>
-#include <linux/ioport.h>
-#include <linux/smp.h>
-#include <linux/smp_lock.h>
-#include <linux/stddef.h>
-#include <linux/slab.h>
-#include <linux/thread_info.h>
-#include <asm-xen/xen-public/physdev.h>
-
-/* Set EXTENT bits starting at BASE in BITMAP to value TURN_ON. */
-static void set_bitmap(unsigned long *bitmap, unsigned int base, unsigned int
extent, int new_value)
-{
- unsigned long mask;
- unsigned long *bitmap_base = bitmap + (base / BITS_PER_LONG);
- unsigned int low_index = base & (BITS_PER_LONG-1);
- int length = low_index + extent;
-
- if (low_index != 0) {
- mask = (~0UL << low_index);
- if (length < BITS_PER_LONG)
- mask &= ~(~0UL << length);
- if (new_value)
- *bitmap_base++ |= mask;
- else
- *bitmap_base++ &= ~mask;
- length -= BITS_PER_LONG;
- }
-
- mask = (new_value ? ~0UL : 0UL);
- while (length >= BITS_PER_LONG) {
- *bitmap_base++ = mask;
- length -= BITS_PER_LONG;
- }
-
- if (length > 0) {
- mask = ~(~0UL << length);
- if (new_value)
- *bitmap_base++ |= mask;
- else
- *bitmap_base++ &= ~mask;
- }
-}
-
-
-/*
- * this changes the io permissions bitmap in the current task.
- */
-asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int turn_on)
-{
- struct thread_struct * t = ¤t->thread;
- unsigned long *bitmap;
- physdev_op_t op;
-
- if ((from + num <= from) || (from + num > IO_BITMAP_BITS))
- return -EINVAL;
- if (turn_on && !capable(CAP_SYS_RAWIO))
- return -EPERM;
-
- /*
- * If it's the first ioperm() call in this thread's lifetime, set the
- * IO bitmap up. ioperm() is much less timing critical than clone(),
- * this is why we delay this operation until now:
- */
- if (!t->io_bitmap_ptr) {
- bitmap = kmalloc(IO_BITMAP_BYTES, GFP_KERNEL);
- if (!bitmap)
- return -ENOMEM;
-
- memset(bitmap, 0xff, IO_BITMAP_BYTES);
- t->io_bitmap_ptr = bitmap;
-
- op.cmd = PHYSDEVOP_SET_IOBITMAP;
- op.u.set_iobitmap.bitmap = (unsigned long)bitmap;
- op.u.set_iobitmap.nr_ports = IO_BITMAP_BITS;
- HYPERVISOR_physdev_op(&op);
- }
-
- set_bitmap(t->io_bitmap_ptr, from, num, !turn_on);
-
- return 0;
-}
-
-/*
- * sys_iopl has to be used when you want to access the IO ports
- * beyond the 0x3ff range: to get the full 65536 ports bitmapped
- * you'd need 8kB of bitmaps/process, which is a bit excessive.
- *
- * Here we just change the eflags value on the stack: we allow
- * only the super-user to do it. This depends on the stack-layout
- * on system-call entry - see also fork() and the signal handling
- * code.
- */
-
-asmlinkage long sys_iopl(unsigned int new_io_pl)
-{
- unsigned int old_io_pl = current->thread.io_pl;
- physdev_op_t op;
-
- if (new_io_pl > 3)
- return -EINVAL;
-
- /* Need "raw I/O" privileges for direct port access. */
- if ((new_io_pl > old_io_pl) && !capable(CAP_SYS_RAWIO))
- return -EPERM;
-
- /* Maintain OS privileges even if user attempts to relinquish them. */
- if (new_io_pl == 0)
- new_io_pl = 1;
-
- /* Change our version of the privilege levels. */
- current->thread.io_pl = new_io_pl;
-
- /* Force the change at ring 0. */
- op.cmd = PHYSDEVOP_SET_IOPL;
- op.u.set_iopl.iopl = new_io_pl;
- HYPERVISOR_physdev_op(&op);
-
- return 0;
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/ldt.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/ldt.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,275 +0,0 @@
-/*
- * linux/kernel/ldt.c
- *
- * Copyright (C) 1992 Krishna Balasubramanian and Linus Torvalds
- * Copyright (C) 1999 Ingo Molnar <mingo@xxxxxxxxxx>
- */
-
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/smp_lock.h>
-#include <linux/vmalloc.h>
-#include <linux/slab.h>
-
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#include <asm/ldt.h>
-#include <asm/desc.h>
-#include <asm/mmu_context.h>
-
-#ifdef CONFIG_SMP /* avoids "defined but not used" warnig */
-static void flush_ldt(void *null)
-{
- if (current->active_mm)
- load_LDT(¤t->active_mm->context);
-}
-#endif
-
-static int alloc_ldt(mm_context_t *pc, int mincount, int reload)
-{
- void *oldldt;
- void *newldt;
- int oldsize;
-
- if (mincount <= pc->size)
- return 0;
- oldsize = pc->size;
- mincount = (mincount+511)&(~511);
- if (mincount*LDT_ENTRY_SIZE > PAGE_SIZE)
- newldt = vmalloc(mincount*LDT_ENTRY_SIZE);
- else
- newldt = kmalloc(mincount*LDT_ENTRY_SIZE, GFP_KERNEL);
-
- if (!newldt)
- return -ENOMEM;
-
- if (oldsize)
- memcpy(newldt, pc->ldt, oldsize*LDT_ENTRY_SIZE);
- oldldt = pc->ldt;
- memset(newldt+oldsize*LDT_ENTRY_SIZE, 0,
(mincount-oldsize)*LDT_ENTRY_SIZE);
- pc->ldt = newldt;
- wmb();
- pc->size = mincount;
- wmb();
-
- if (reload) {
-#ifdef CONFIG_SMP
- cpumask_t mask;
- preempt_disable();
-#endif
- make_pages_readonly(pc->ldt, (pc->size * LDT_ENTRY_SIZE) /
- PAGE_SIZE);
- load_LDT(pc);
-#ifdef CONFIG_SMP
- mask = cpumask_of_cpu(smp_processor_id());
- if (!cpus_equal(current->mm->cpu_vm_mask, mask))
- smp_call_function(flush_ldt, NULL, 1, 1);
- preempt_enable();
-#endif
- }
- if (oldsize) {
- make_pages_writable(oldldt, (oldsize * LDT_ENTRY_SIZE) /
- PAGE_SIZE);
- if (oldsize*LDT_ENTRY_SIZE > PAGE_SIZE)
- vfree(oldldt);
- else
- kfree(oldldt);
- }
- return 0;
-}
-
-static inline int copy_ldt(mm_context_t *new, mm_context_t *old)
-{
- int err = alloc_ldt(new, old->size, 0);
- if (err < 0)
- return err;
- memcpy(new->ldt, old->ldt, old->size*LDT_ENTRY_SIZE);
- make_pages_readonly(new->ldt, (new->size * LDT_ENTRY_SIZE) /
- PAGE_SIZE);
- return 0;
-}
-
-/*
- * we do not have to muck with descriptors here, that is
- * done in switch_mm() as needed.
- */
-int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
-{
- struct mm_struct * old_mm;
- int retval = 0;
-
- memset(&mm->context, 0, sizeof(mm->context));
- init_MUTEX(&mm->context.sem);
- old_mm = current->mm;
- if (old_mm && old_mm->context.size > 0) {
- down(&old_mm->context.sem);
- retval = copy_ldt(&mm->context, &old_mm->context);
- up(&old_mm->context.sem);
- }
- if (retval == 0) {
- spin_lock(&mm_unpinned_lock);
- list_add(&mm->context.unpinned, &mm_unpinned);
- spin_unlock(&mm_unpinned_lock);
- }
- return retval;
-}
-
-/*
- * No need to lock the MM as we are the last user
- */
-void destroy_context(struct mm_struct *mm)
-{
- if (mm->context.size) {
- if (mm == current->active_mm)
- clear_LDT();
- make_pages_writable(mm->context.ldt,
- (mm->context.size * LDT_ENTRY_SIZE) /
- PAGE_SIZE);
- if (mm->context.size*LDT_ENTRY_SIZE > PAGE_SIZE)
- vfree(mm->context.ldt);
- else
- kfree(mm->context.ldt);
- mm->context.size = 0;
- }
- if (!mm->context.pinned) {
- spin_lock(&mm_unpinned_lock);
- list_del(&mm->context.unpinned);
- spin_unlock(&mm_unpinned_lock);
- }
-}
-
-static int read_ldt(void __user * ptr, unsigned long bytecount)
-{
- int err;
- unsigned long size;
- struct mm_struct * mm = current->mm;
-
- if (!mm->context.size)
- return 0;
- if (bytecount > LDT_ENTRY_SIZE*LDT_ENTRIES)
- bytecount = LDT_ENTRY_SIZE*LDT_ENTRIES;
-
- down(&mm->context.sem);
- size = mm->context.size*LDT_ENTRY_SIZE;
- if (size > bytecount)
- size = bytecount;
-
- err = 0;
- if (copy_to_user(ptr, mm->context.ldt, size))
- err = -EFAULT;
- up(&mm->context.sem);
- if (err < 0)
- goto error_return;
- if (size != bytecount) {
- /* zero-fill the rest */
- if (clear_user(ptr+size, bytecount-size) != 0) {
- err = -EFAULT;
- goto error_return;
- }
- }
- return bytecount;
-error_return:
- return err;
-}
-
-static int read_default_ldt(void __user * ptr, unsigned long bytecount)
-{
- int err;
- unsigned long size;
- void *address;
-
- err = 0;
- address = &default_ldt[0];
- size = 5*sizeof(struct desc_struct);
- if (size > bytecount)
- size = bytecount;
-
- err = size;
- if (copy_to_user(ptr, address, size))
- err = -EFAULT;
-
- return err;
-}
-
-static int write_ldt(void __user * ptr, unsigned long bytecount, int oldmode)
-{
- struct mm_struct * mm = current->mm;
- __u32 entry_1, entry_2, *lp;
- unsigned long mach_lp;
- int error;
- struct user_desc ldt_info;
-
- error = -EINVAL;
- if (bytecount != sizeof(ldt_info))
- goto out;
- error = -EFAULT;
- if (copy_from_user(&ldt_info, ptr, sizeof(ldt_info)))
- goto out;
-
- error = -EINVAL;
- if (ldt_info.entry_number >= LDT_ENTRIES)
- goto out;
- if (ldt_info.contents == 3) {
- if (oldmode)
- goto out;
- if (ldt_info.seg_not_present == 0)
- goto out;
- }
-
- down(&mm->context.sem);
- if (ldt_info.entry_number >= mm->context.size) {
- error = alloc_ldt(¤t->mm->context,
ldt_info.entry_number+1, 1);
- if (error < 0)
- goto out_unlock;
- }
-
- lp = (__u32 *) ((ldt_info.entry_number << 3) + (char *)
mm->context.ldt);
- mach_lp = arbitrary_virt_to_machine(lp);
-
- /* Allow LDTs to be cleared by the user. */
- if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
- if (oldmode || LDT_empty(&ldt_info)) {
- entry_1 = 0;
- entry_2 = 0;
- goto install;
- }
- }
-
- entry_1 = LDT_entry_a(&ldt_info);
- entry_2 = LDT_entry_b(&ldt_info);
- if (oldmode)
- entry_2 &= ~(1 << 20);
-
- /* Install the new entry ... */
-install:
- error = HYPERVISOR_update_descriptor(mach_lp, entry_1, entry_2);
-
-out_unlock:
- up(&mm->context.sem);
-out:
- return error;
-}
-
-asmlinkage int sys_modify_ldt(int func, void __user *ptr, unsigned long
bytecount)
-{
- int ret = -ENOSYS;
-
- switch (func) {
- case 0:
- ret = read_ldt(ptr, bytecount);
- break;
- case 1:
- ret = write_ldt(ptr, bytecount, 1);
- break;
- case 2:
- ret = read_default_ldt(ptr, bytecount);
- break;
- case 0x11:
- ret = write_ldt(ptr, bytecount, 0);
- break;
- }
- return ret;
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/microcode.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/microcode.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,163 +0,0 @@
-/*
- * Intel CPU Microcode Update Driver for Linux
- *
- * Copyright (C) 2000-2004 Tigran Aivazian
- *
- * This driver allows to upgrade microcode on Intel processors
- * belonging to IA-32 family - PentiumPro, Pentium II,
- * Pentium III, Xeon, Pentium 4, etc.
- *
- * Reference: Section 8.10 of Volume III, Intel Pentium 4 Manual,
- * Order Number 245472 or free download from:
- *
- * http://developer.intel.com/design/pentium4/manuals/245472.htm
- *
- * For more information, go to http://www.urbanmyth.org/microcode
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-//#define DEBUG /* pr_debug */
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/miscdevice.h>
-#include <linux/spinlock.h>
-#include <linux/mm.h>
-#include <linux/syscalls.h>
-
-#include <asm/msr.h>
-#include <asm/uaccess.h>
-#include <asm/processor.h>
-
-MODULE_DESCRIPTION("Intel CPU (IA-32) Microcode Update Driver");
-MODULE_AUTHOR("Tigran Aivazian <tigran@xxxxxxxxxxx>");
-MODULE_LICENSE("GPL");
-
-#define MICROCODE_VERSION "1.14-xen"
-
-#define DEFAULT_UCODE_DATASIZE (2000) /* 2000 bytes */
-#define MC_HEADER_SIZE (sizeof (microcode_header_t)) /* 48 bytes */
-#define DEFAULT_UCODE_TOTALSIZE (DEFAULT_UCODE_DATASIZE + MC_HEADER_SIZE) /*
2048 bytes */
-
-/* no concurrent ->write()s are allowed on /dev/cpu/microcode */
-static DECLARE_MUTEX(microcode_sem);
-
-static void __user *user_buffer; /* user area microcode data buffer */
-static unsigned int user_buffer_size; /* it's size */
-
-static int microcode_open (struct inode *unused1, struct file *unused2)
-{
- return capable(CAP_SYS_RAWIO) ? 0 : -EPERM;
-}
-
-
-static int do_microcode_update (void)
-{
- int err;
- dom0_op_t op;
-
- err = sys_mlock((unsigned long)user_buffer, user_buffer_size);
- if (err != 0)
- return err;
-
- op.cmd = DOM0_MICROCODE;
- op.u.microcode.data = user_buffer;
- op.u.microcode.length = user_buffer_size;
- err = HYPERVISOR_dom0_op(&op);
-
- (void)sys_munlock((unsigned long)user_buffer, user_buffer_size);
-
- return err;
-}
-
-static ssize_t microcode_write (struct file *file, const char __user *buf,
size_t len, loff_t *ppos)
-{
- ssize_t ret;
-
- if (len < DEFAULT_UCODE_TOTALSIZE) {
- printk(KERN_ERR "microcode: not enough data\n");
- return -EINVAL;
- }
-
- if ((len >> PAGE_SHIFT) > num_physpages) {
- printk(KERN_ERR "microcode: too much data (max %ld pages)\n",
num_physpages);
- return -EINVAL;
- }
-
- down(µcode_sem);
-
- user_buffer = (void __user *) buf;
- user_buffer_size = (int) len;
-
- ret = do_microcode_update();
- if (!ret)
- ret = (ssize_t)len;
-
- up(µcode_sem);
-
- return ret;
-}
-
-static int microcode_ioctl (struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- switch (cmd) {
- /*
- * XXX: will be removed after microcode_ctl
- * is updated to ignore failure of this ioctl()
- */
- case MICROCODE_IOCFREE:
- return 0;
- default:
- return -EINVAL;
- }
- return -EINVAL;
-}
-
-static struct file_operations microcode_fops = {
- .owner = THIS_MODULE,
- .write = microcode_write,
- .ioctl = microcode_ioctl,
- .open = microcode_open,
-};
-
-static struct miscdevice microcode_dev = {
- .minor = MICROCODE_MINOR,
- .name = "microcode",
- .devfs_name = "cpu/microcode",
- .fops = µcode_fops,
-};
-
-static int __init microcode_init (void)
-{
- int error;
-
- error = misc_register(µcode_dev);
- if (error) {
- printk(KERN_ERR
- "microcode: can't misc_register on minor=%d\n",
- MICROCODE_MINOR);
- return error;
- }
-
- printk(KERN_INFO
- "IA-32 Microcode Update Driver: v" MICROCODE_VERSION "
<tigran@xxxxxxxxxxx>\n");
- return 0;
-}
-
-static void __exit microcode_exit (void)
-{
- misc_deregister(µcode_dev);
- printk(KERN_INFO "IA-32 Microcode Update Driver v" MICROCODE_VERSION "
unregistered\n");
-}
-
-module_init(microcode_init)
-module_exit(microcode_exit)
-MODULE_ALIAS_MISCDEV(MICROCODE_MINOR);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/mpparse.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/mpparse.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,1115 +0,0 @@
-/*
- * Intel Multiprocessor Specification 1.1 and 1.4
- * compliant MP-table parsing routines.
- *
- * (c) 1995 Alan Cox, Building #3 <alan@xxxxxxxxxx>
- * (c) 1998, 1999, 2000 Ingo Molnar <mingo@xxxxxxxxxx>
- *
- * Fixes
- * Erich Boleyn : MP v1.4 and additional changes.
- * Alan Cox : Added EBDA scanning
- * Ingo Molnar : various cleanups and rewrites
- * Maciej W. Rozycki: Bits for default MP configurations
- * Paul Diefenbaugh: Added full ACPI support
- */
-
-#include <linux/mm.h>
-#include <linux/irq.h>
-#include <linux/init.h>
-#include <linux/acpi.h>
-#include <linux/delay.h>
-#include <linux/config.h>
-#include <linux/bootmem.h>
-#include <linux/smp_lock.h>
-#include <linux/kernel_stat.h>
-#include <linux/mc146818rtc.h>
-#include <linux/bitops.h>
-
-#include <asm/smp.h>
-#include <asm/acpi.h>
-#include <asm/mtrr.h>
-#include <asm/mpspec.h>
-#include <asm/io_apic.h>
-
-#include <mach_apic.h>
-#include <mach_mpparse.h>
-#include <bios_ebda.h>
-
-/* Have we found an MP table */
-int smp_found_config;
-unsigned int __initdata maxcpus = NR_CPUS;
-
-/*
- * Various Linux-internal data structures created from the
- * MP-table.
- */
-int apic_version [MAX_APICS];
-int mp_bus_id_to_type [MAX_MP_BUSSES];
-int mp_bus_id_to_node [MAX_MP_BUSSES];
-int mp_bus_id_to_local [MAX_MP_BUSSES];
-int quad_local_to_mp_bus_id [NR_CPUS/4][4];
-int mp_bus_id_to_pci_bus [MAX_MP_BUSSES] = { [0 ... MAX_MP_BUSSES-1] = -1 };
-int mp_current_pci_id;
-
-/* I/O APIC entries */
-struct mpc_config_ioapic mp_ioapics[MAX_IO_APICS];
-
-/* # of MP IRQ source entries */
-struct mpc_config_intsrc mp_irqs[MAX_IRQ_SOURCES];
-
-/* MP IRQ source entries */
-int mp_irq_entries;
-
-int nr_ioapics;
-
-int pic_mode;
-unsigned long mp_lapic_addr;
-
-/* Processor that is doing the boot up */
-unsigned int boot_cpu_physical_apicid = -1U;
-unsigned int boot_cpu_logical_apicid = -1U;
-/* Internal processor count */
-static unsigned int __initdata num_processors;
-
-/* Bitmask of physically existing CPUs */
-physid_mask_t phys_cpu_present_map;
-
-u8 bios_cpu_apicid[NR_CPUS] = { [0 ... NR_CPUS-1] = BAD_APICID };
-
-/*
- * Intel MP BIOS table parsing routines:
- */
-
-
-/*
- * Checksum an MP configuration block.
- */
-
-static int __init mpf_checksum(unsigned char *mp, int len)
-{
- int sum = 0;
-
- while (len--)
- sum += *mp++;
-
- return sum & 0xFF;
-}
-
-/*
- * Have to match translation table entries to main table entries by counter
- * hence the mpc_record variable .... can't see a less disgusting way of
- * doing this ....
- */
-
-static int mpc_record;
-static struct mpc_config_translation *translation_table[MAX_MPC_ENTRY]
__initdata;
-
-#ifdef CONFIG_X86_NUMAQ
-static int MP_valid_apicid(int apicid, int version)
-{
- return hweight_long(apicid & 0xf) == 1 && (apicid >> 4) != 0xf;
-}
-#elif !defined(CONFIG_XEN)
-static int MP_valid_apicid(int apicid, int version)
-{
- if (version >= 0x14)
- return apicid < 0xff;
- else
- return apicid < 0xf;
-}
-#endif
-
-#ifndef CONFIG_XEN
-void __init MP_processor_info (struct mpc_config_processor *m)
-{
- int ver, apicid;
- physid_mask_t tmp;
-
- if (!(m->mpc_cpuflag & CPU_ENABLED))
- return;
-
- apicid = mpc_apic_id(m, translation_table[mpc_record]);
-
- if (m->mpc_featureflag&(1<<0))
- Dprintk(" Floating point unit present.\n");
- if (m->mpc_featureflag&(1<<7))
- Dprintk(" Machine Exception supported.\n");
- if (m->mpc_featureflag&(1<<8))
- Dprintk(" 64 bit compare & exchange supported.\n");
- if (m->mpc_featureflag&(1<<9))
- Dprintk(" Internal APIC present.\n");
- if (m->mpc_featureflag&(1<<11))
- Dprintk(" SEP present.\n");
- if (m->mpc_featureflag&(1<<12))
- Dprintk(" MTRR present.\n");
- if (m->mpc_featureflag&(1<<13))
- Dprintk(" PGE present.\n");
- if (m->mpc_featureflag&(1<<14))
- Dprintk(" MCA present.\n");
- if (m->mpc_featureflag&(1<<15))
- Dprintk(" CMOV present.\n");
- if (m->mpc_featureflag&(1<<16))
- Dprintk(" PAT present.\n");
- if (m->mpc_featureflag&(1<<17))
- Dprintk(" PSE present.\n");
- if (m->mpc_featureflag&(1<<18))
- Dprintk(" PSN present.\n");
- if (m->mpc_featureflag&(1<<19))
- Dprintk(" Cache Line Flush Instruction present.\n");
- /* 20 Reserved */
- if (m->mpc_featureflag&(1<<21))
- Dprintk(" Debug Trace and EMON Store present.\n");
- if (m->mpc_featureflag&(1<<22))
- Dprintk(" ACPI Thermal Throttle Registers present.\n");
- if (m->mpc_featureflag&(1<<23))
- Dprintk(" MMX present.\n");
- if (m->mpc_featureflag&(1<<24))
- Dprintk(" FXSR present.\n");
- if (m->mpc_featureflag&(1<<25))
- Dprintk(" XMM present.\n");
- if (m->mpc_featureflag&(1<<26))
- Dprintk(" Willamette New Instructions present.\n");
- if (m->mpc_featureflag&(1<<27))
- Dprintk(" Self Snoop present.\n");
- if (m->mpc_featureflag&(1<<28))
- Dprintk(" HT present.\n");
- if (m->mpc_featureflag&(1<<29))
- Dprintk(" Thermal Monitor present.\n");
- /* 30, 31 Reserved */
-
-
- if (m->mpc_cpuflag & CPU_BOOTPROCESSOR) {
- Dprintk(" Bootup CPU\n");
- boot_cpu_physical_apicid = m->mpc_apicid;
- boot_cpu_logical_apicid = apicid;
- }
-
- if (num_processors >= NR_CPUS) {
- printk(KERN_WARNING "WARNING: NR_CPUS limit of %i reached."
- " Processor ignored.\n", NR_CPUS);
- return;
- }
-
- if (num_processors >= maxcpus) {
- printk(KERN_WARNING "WARNING: maxcpus limit of %i reached."
- " Processor ignored.\n", maxcpus);
- return;
- }
- num_processors++;
- ver = m->mpc_apicver;
-
- if (!MP_valid_apicid(apicid, ver)) {
- printk(KERN_WARNING "Processor #%d INVALID. (Max ID: %d).\n",
- m->mpc_apicid, MAX_APICS);
- --num_processors;
- return;
- }
-
- tmp = apicid_to_cpu_present(apicid);
- physids_or(phys_cpu_present_map, phys_cpu_present_map, tmp);
-
- /*
- * Validate version
- */
- if (ver == 0x0) {
- printk(KERN_WARNING "BIOS bug, APIC version is 0 for CPU#%d!
fixing up to 0x10. (tell your hw vendor)\n", m->mpc_apicid);
- ver = 0x10;
- }
- apic_version[m->mpc_apicid] = ver;
- bios_cpu_apicid[num_processors - 1] = m->mpc_apicid;
-}
-#else
-void __init MP_processor_info (struct mpc_config_processor *m)
-{
- num_processors++;
-}
-#endif /* CONFIG_XEN */
-
-static void __init MP_bus_info (struct mpc_config_bus *m)
-{
- char str[7];
-
- memcpy(str, m->mpc_bustype, 6);
- str[6] = 0;
-
- mpc_oem_bus_info(m, str, translation_table[mpc_record]);
-
- if (strncmp(str, BUSTYPE_ISA, sizeof(BUSTYPE_ISA)-1) == 0) {
- mp_bus_id_to_type[m->mpc_busid] = MP_BUS_ISA;
- } else if (strncmp(str, BUSTYPE_EISA, sizeof(BUSTYPE_EISA)-1) == 0) {
- mp_bus_id_to_type[m->mpc_busid] = MP_BUS_EISA;
- } else if (strncmp(str, BUSTYPE_PCI, sizeof(BUSTYPE_PCI)-1) == 0) {
- mpc_oem_pci_bus(m, translation_table[mpc_record]);
- mp_bus_id_to_type[m->mpc_busid] = MP_BUS_PCI;
- mp_bus_id_to_pci_bus[m->mpc_busid] = mp_current_pci_id;
- mp_current_pci_id++;
- } else if (strncmp(str, BUSTYPE_MCA, sizeof(BUSTYPE_MCA)-1) == 0) {
- mp_bus_id_to_type[m->mpc_busid] = MP_BUS_MCA;
- } else if (strncmp(str, BUSTYPE_NEC98, sizeof(BUSTYPE_NEC98)-1) == 0) {
- mp_bus_id_to_type[m->mpc_busid] = MP_BUS_NEC98;
- } else {
- printk(KERN_WARNING "Unknown bustype %s - ignoring\n", str);
- }
-}
-
-static void __init MP_ioapic_info (struct mpc_config_ioapic *m)
-{
- if (!(m->mpc_flags & MPC_APIC_USABLE))
- return;
-
- printk(KERN_INFO "I/O APIC #%d Version %d at 0x%lX.\n",
- m->mpc_apicid, m->mpc_apicver, m->mpc_apicaddr);
- if (nr_ioapics >= MAX_IO_APICS) {
- printk(KERN_CRIT "Max # of I/O APICs (%d) exceeded (found
%d).\n",
- MAX_IO_APICS, nr_ioapics);
- panic("Recompile kernel with bigger MAX_IO_APICS!.\n");
- }
- if (!m->mpc_apicaddr) {
- printk(KERN_ERR "WARNING: bogus zero I/O APIC address"
- " found in MP table, skipping!\n");
- return;
- }
- mp_ioapics[nr_ioapics] = *m;
- nr_ioapics++;
-}
-
-static void __init MP_intsrc_info (struct mpc_config_intsrc *m)
-{
- mp_irqs [mp_irq_entries] = *m;
- Dprintk("Int: type %d, pol %d, trig %d, bus %d,"
- " IRQ %02x, APIC ID %x, APIC INT %02x\n",
- m->mpc_irqtype, m->mpc_irqflag & 3,
- (m->mpc_irqflag >> 2) & 3, m->mpc_srcbus,
- m->mpc_srcbusirq, m->mpc_dstapic, m->mpc_dstirq);
- if (++mp_irq_entries == MAX_IRQ_SOURCES)
- panic("Max # of irq sources exceeded!!\n");
-}
-
-static void __init MP_lintsrc_info (struct mpc_config_lintsrc *m)
-{
- Dprintk("Lint: type %d, pol %d, trig %d, bus %d,"
- " IRQ %02x, APIC ID %x, APIC LINT %02x\n",
- m->mpc_irqtype, m->mpc_irqflag & 3,
- (m->mpc_irqflag >> 2) &3, m->mpc_srcbusid,
- m->mpc_srcbusirq, m->mpc_destapic, m->mpc_destapiclint);
- /*
- * Well it seems all SMP boards in existence
- * use ExtINT/LVT1 == LINT0 and
- * NMI/LVT2 == LINT1 - the following check
- * will show us if this assumptions is false.
- * Until then we do not have to add baggage.
- */
- if ((m->mpc_irqtype == mp_ExtINT) &&
- (m->mpc_destapiclint != 0))
- BUG();
- if ((m->mpc_irqtype == mp_NMI) &&
- (m->mpc_destapiclint != 1))
- BUG();
-}
-
-#ifdef CONFIG_X86_NUMAQ
-static void __init MP_translation_info (struct mpc_config_translation *m)
-{
- printk(KERN_INFO "Translation: record %d, type %d, quad %d, global %d,
local %d\n", mpc_record, m->trans_type, m->trans_quad, m->trans_global,
m->trans_local);
-
- if (mpc_record >= MAX_MPC_ENTRY)
- printk(KERN_ERR "MAX_MPC_ENTRY exceeded!\n");
- else
- translation_table[mpc_record] = m; /* stash this for later */
- if (m->trans_quad < MAX_NUMNODES && !node_online(m->trans_quad))
- node_set_online(m->trans_quad);
-}
-
-/*
- * Read/parse the MPC oem tables
- */
-
-static void __init smp_read_mpc_oem(struct mp_config_oemtable *oemtable, \
- unsigned short oemsize)
-{
- int count = sizeof (*oemtable); /* the header size */
- unsigned char *oemptr = ((unsigned char *)oemtable)+count;
-
- mpc_record = 0;
- printk(KERN_INFO "Found an OEM MPC table at %8p - parsing it ... \n",
oemtable);
- if (memcmp(oemtable->oem_signature,MPC_OEM_SIGNATURE,4))
- {
- printk(KERN_WARNING "SMP mpc oemtable: bad signature
[%c%c%c%c]!\n",
- oemtable->oem_signature[0],
- oemtable->oem_signature[1],
- oemtable->oem_signature[2],
- oemtable->oem_signature[3]);
- return;
- }
- if (mpf_checksum((unsigned char *)oemtable,oemtable->oem_length))
- {
- printk(KERN_WARNING "SMP oem mptable: checksum error!\n");
- return;
- }
- while (count < oemtable->oem_length) {
- switch (*oemptr) {
- case MP_TRANSLATION:
- {
- struct mpc_config_translation *m=
- (struct mpc_config_translation *)oemptr;
- MP_translation_info(m);
- oemptr += sizeof(*m);
- count += sizeof(*m);
- ++mpc_record;
- break;
- }
- default:
- {
- printk(KERN_WARNING "Unrecognised OEM table
entry type! - %d\n", (int) *oemptr);
- return;
- }
- }
- }
-}
-
-static inline void mps_oem_check(struct mp_config_table *mpc, char *oem,
- char *productid)
-{
- if (strncmp(oem, "IBM NUMA", 8))
- printk("Warning! May not be a NUMA-Q system!\n");
- if (mpc->mpc_oemptr)
- smp_read_mpc_oem((struct mp_config_oemtable *) mpc->mpc_oemptr,
- mpc->mpc_oemsize);
-}
-#endif /* CONFIG_X86_NUMAQ */
-
-/*
- * Read/parse the MPC
- */
-
-static int __init smp_read_mpc(struct mp_config_table *mpc)
-{
- char str[16];
- char oem[10];
- int count=sizeof(*mpc);
- unsigned char *mpt=((unsigned char *)mpc)+count;
-
- if (memcmp(mpc->mpc_signature,MPC_SIGNATURE,4)) {
- printk(KERN_ERR "SMP mptable: bad signature [0x%x]!\n",
- *(u32 *)mpc->mpc_signature);
- return 0;
- }
- if (mpf_checksum((unsigned char *)mpc,mpc->mpc_length)) {
- printk(KERN_ERR "SMP mptable: checksum error!\n");
- return 0;
- }
- if (mpc->mpc_spec!=0x01 && mpc->mpc_spec!=0x04) {
- printk(KERN_ERR "SMP mptable: bad table version (%d)!!\n",
- mpc->mpc_spec);
- return 0;
- }
- if (!mpc->mpc_lapic) {
- printk(KERN_ERR "SMP mptable: null local APIC address!\n");
- return 0;
- }
- memcpy(oem,mpc->mpc_oem,8);
- oem[8]=0;
- printk(KERN_INFO "OEM ID: %s ",oem);
-
- memcpy(str,mpc->mpc_productid,12);
- str[12]=0;
- printk("Product ID: %s ",str);
-
- mps_oem_check(mpc, oem, str);
-
- printk("APIC at: 0x%lX\n",mpc->mpc_lapic);
-
- /*
- * Save the local APIC address (it might be non-default) -- but only
- * if we're not using ACPI.
- */
- if (!acpi_lapic)
- mp_lapic_addr = mpc->mpc_lapic;
-
- /*
- * Now process the configuration blocks.
- */
- mpc_record = 0;
- while (count < mpc->mpc_length) {
- switch(*mpt) {
- case MP_PROCESSOR:
- {
- struct mpc_config_processor *m=
- (struct mpc_config_processor *)mpt;
- /* ACPI may have already provided this data */
- if (!acpi_lapic)
- MP_processor_info(m);
- mpt += sizeof(*m);
- count += sizeof(*m);
- break;
- }
- case MP_BUS:
- {
- struct mpc_config_bus *m=
- (struct mpc_config_bus *)mpt;
- MP_bus_info(m);
- mpt += sizeof(*m);
- count += sizeof(*m);
- break;
- }
- case MP_IOAPIC:
- {
- struct mpc_config_ioapic *m=
- (struct mpc_config_ioapic *)mpt;
- MP_ioapic_info(m);
- mpt+=sizeof(*m);
- count+=sizeof(*m);
- break;
- }
- case MP_INTSRC:
- {
- struct mpc_config_intsrc *m=
- (struct mpc_config_intsrc *)mpt;
-
- MP_intsrc_info(m);
- mpt+=sizeof(*m);
- count+=sizeof(*m);
- break;
- }
- case MP_LINTSRC:
- {
- struct mpc_config_lintsrc *m=
- (struct mpc_config_lintsrc *)mpt;
- MP_lintsrc_info(m);
- mpt+=sizeof(*m);
- count+=sizeof(*m);
- break;
- }
- default:
- {
- count = mpc->mpc_length;
- break;
- }
- }
- ++mpc_record;
- }
- clustered_apic_check();
- if (!num_processors)
- printk(KERN_ERR "SMP mptable: no processors registered!\n");
- return num_processors;
-}
-
-static int __init ELCR_trigger(unsigned int irq)
-{
- unsigned int port;
-
- port = 0x4d0 + (irq >> 3);
- return (inb(port) >> (irq & 7)) & 1;
-}
-
-static void __init construct_default_ioirq_mptable(int mpc_default_type)
-{
- struct mpc_config_intsrc intsrc;
- int i;
- int ELCR_fallback = 0;
-
- intsrc.mpc_type = MP_INTSRC;
- intsrc.mpc_irqflag = 0; /* conforming */
- intsrc.mpc_srcbus = 0;
- intsrc.mpc_dstapic = mp_ioapics[0].mpc_apicid;
-
- intsrc.mpc_irqtype = mp_INT;
-
- /*
- * If true, we have an ISA/PCI system with no IRQ entries
- * in the MP table. To prevent the PCI interrupts from being set up
- * incorrectly, we try to use the ELCR. The sanity check to see if
- * there is good ELCR data is very simple - IRQ0, 1, 2 and 13 can
- * never be level sensitive, so we simply see if the ELCR agrees.
- * If it does, we assume it's valid.
- */
- if (mpc_default_type == 5) {
- printk(KERN_INFO "ISA/PCI bus type with no IRQ information...
falling back to ELCR\n");
-
- if (ELCR_trigger(0) || ELCR_trigger(1) || ELCR_trigger(2) ||
ELCR_trigger(13))
- printk(KERN_WARNING "ELCR contains invalid data... not
using ELCR\n");
- else {
- printk(KERN_INFO "Using ELCR to identify PCI
interrupts\n");
- ELCR_fallback = 1;
- }
- }
-
- for (i = 0; i < 16; i++) {
- switch (mpc_default_type) {
- case 2:
- if (i == 0 || i == 13)
- continue; /* IRQ0 & IRQ13 not connected */
- /* fall through */
- default:
- if (i == 2)
- continue; /* IRQ2 is never connected */
- }
-
- if (ELCR_fallback) {
- /*
- * If the ELCR indicates a level-sensitive interrupt,
we
- * copy that information over to the MP table in the
- * irqflag field (level sensitive, active high
polarity).
- */
- if (ELCR_trigger(i))
- intsrc.mpc_irqflag = 13;
- else
- intsrc.mpc_irqflag = 0;
- }
-
- intsrc.mpc_srcbusirq = i;
- intsrc.mpc_dstirq = i ? i : 2; /* IRQ0 to INTIN2 */
- MP_intsrc_info(&intsrc);
- }
-
- intsrc.mpc_irqtype = mp_ExtINT;
- intsrc.mpc_srcbusirq = 0;
- intsrc.mpc_dstirq = 0; /* 8259A to INTIN0 */
- MP_intsrc_info(&intsrc);
-}
-
-static inline void __init construct_default_ISA_mptable(int mpc_default_type)
-{
- struct mpc_config_processor processor;
- struct mpc_config_bus bus;
- struct mpc_config_ioapic ioapic;
- struct mpc_config_lintsrc lintsrc;
- int linttypes[2] = { mp_ExtINT, mp_NMI };
- int i;
-
- /*
- * local APIC has default address
- */
- mp_lapic_addr = APIC_DEFAULT_PHYS_BASE;
-
- /*
- * 2 CPUs, numbered 0 & 1.
- */
- processor.mpc_type = MP_PROCESSOR;
- /* Either an integrated APIC or a discrete 82489DX. */
- processor.mpc_apicver = mpc_default_type > 4 ? 0x10 : 0x01;
- processor.mpc_cpuflag = CPU_ENABLED;
- processor.mpc_cpufeature = (boot_cpu_data.x86 << 8) |
- (boot_cpu_data.x86_model << 4) |
- boot_cpu_data.x86_mask;
- processor.mpc_featureflag = boot_cpu_data.x86_capability[0];
- processor.mpc_reserved[0] = 0;
- processor.mpc_reserved[1] = 0;
- for (i = 0; i < 2; i++) {
- processor.mpc_apicid = i;
- MP_processor_info(&processor);
- }
-
- bus.mpc_type = MP_BUS;
- bus.mpc_busid = 0;
- switch (mpc_default_type) {
- default:
- printk("???\n");
- printk(KERN_ERR "Unknown standard configuration %d\n",
- mpc_default_type);
- /* fall through */
- case 1:
- case 5:
- memcpy(bus.mpc_bustype, "ISA ", 6);
- break;
- case 2:
- case 6:
- case 3:
- memcpy(bus.mpc_bustype, "EISA ", 6);
- break;
- case 4:
- case 7:
- memcpy(bus.mpc_bustype, "MCA ", 6);
- }
- MP_bus_info(&bus);
- if (mpc_default_type > 4) {
- bus.mpc_busid = 1;
- memcpy(bus.mpc_bustype, "PCI ", 6);
- MP_bus_info(&bus);
- }
-
- ioapic.mpc_type = MP_IOAPIC;
- ioapic.mpc_apicid = 2;
- ioapic.mpc_apicver = mpc_default_type > 4 ? 0x10 : 0x01;
- ioapic.mpc_flags = MPC_APIC_USABLE;
- ioapic.mpc_apicaddr = 0xFEC00000;
- MP_ioapic_info(&ioapic);
-
- /*
- * We set up most of the low 16 IO-APIC pins according to MPS rules.
- */
- construct_default_ioirq_mptable(mpc_default_type);
-
- lintsrc.mpc_type = MP_LINTSRC;
- lintsrc.mpc_irqflag = 0; /* conforming */
- lintsrc.mpc_srcbusid = 0;
- lintsrc.mpc_srcbusirq = 0;
- lintsrc.mpc_destapic = MP_APIC_ALL;
- for (i = 0; i < 2; i++) {
- lintsrc.mpc_irqtype = linttypes[i];
- lintsrc.mpc_destapiclint = i;
- MP_lintsrc_info(&lintsrc);
- }
-}
-
-static struct intel_mp_floating *mpf_found;
-
-/*
- * Scan the memory blocks for an SMP configuration block.
- */
-void __init get_smp_config (void)
-{
- struct intel_mp_floating *mpf = mpf_found;
-
- /*
- * ACPI may be used to obtain the entire SMP configuration or just to
- * enumerate/configure processors (CONFIG_ACPI_BOOT). Note that
- * ACPI supports both logical (e.g. Hyper-Threading) and physical
- * processors, where MPS only supports physical.
- */
- if (acpi_lapic && acpi_ioapic) {
- printk(KERN_INFO "Using ACPI (MADT) for SMP configuration
information\n");
- return;
- }
- else if (acpi_lapic)
- printk(KERN_INFO "Using ACPI for processor (LAPIC)
configuration information\n");
-
- printk(KERN_INFO "Intel MultiProcessor Specification v1.%d\n",
mpf->mpf_specification);
- if (mpf->mpf_feature2 & (1<<7)) {
- printk(KERN_INFO " IMCR and PIC compatibility mode.\n");
- pic_mode = 1;
- } else {
- printk(KERN_INFO " Virtual Wire compatibility mode.\n");
- pic_mode = 0;
- }
-
- /*
- * Now see if we need to read further.
- */
- if (mpf->mpf_feature1 != 0) {
-
- printk(KERN_INFO "Default MP configuration #%d\n",
mpf->mpf_feature1);
- construct_default_ISA_mptable(mpf->mpf_feature1);
-
- } else if (mpf->mpf_physptr) {
-
- /*
- * Read the physical hardware table. Anything here will
- * override the defaults.
- */
- if (!smp_read_mpc(isa_bus_to_virt(mpf->mpf_physptr))) {
- smp_found_config = 0;
- printk(KERN_ERR "BIOS bug, MP table errors
detected!...\n");
- printk(KERN_ERR "... disabling SMP support. (tell your
hw vendor)\n");
- return;
- }
- /*
- * If there are no explicit MP IRQ entries, then we are
- * broken. We set up most of the low 16 IO-APIC pins to
- * ISA defaults and hope it will work.
- */
- if (!mp_irq_entries) {
- struct mpc_config_bus bus;
-
- printk(KERN_ERR "BIOS bug, no explicit IRQ entries,
using default mptable. (tell your hw vendor)\n");
-
- bus.mpc_type = MP_BUS;
- bus.mpc_busid = 0;
- memcpy(bus.mpc_bustype, "ISA ", 6);
- MP_bus_info(&bus);
-
- construct_default_ioirq_mptable(0);
- }
-
- } else
- BUG();
-
- printk(KERN_INFO "Processors: %d\n", num_processors);
- /*
- * Only use the first configuration found.
- */
-}
-
-static int __init smp_scan_config (unsigned long base, unsigned long length)
-{
- unsigned long *bp = isa_bus_to_virt(base);
- struct intel_mp_floating *mpf;
-
- Dprintk("Scan SMP from %p for %ld bytes.\n", bp,length);
- if (sizeof(*mpf) != 16)
- printk("Error: MPF size\n");
-
- while (length > 0) {
- mpf = (struct intel_mp_floating *)bp;
- if ((*bp == SMP_MAGIC_IDENT) &&
- (mpf->mpf_length == 1) &&
- !mpf_checksum((unsigned char *)bp, 16) &&
- ((mpf->mpf_specification == 1)
- || (mpf->mpf_specification == 4)) ) {
-
- smp_found_config = 1;
- printk(KERN_INFO "found SMP MP-table at %08lx\n",
- virt_to_phys(mpf));
- if (mpf->mpf_physptr) {
- /*
- * We cannot access to MPC table to compute
- * table size yet, as only few megabytes from
- * the bottom is mapped now.
- * PC-9800's MPC table places on the very last
- * of physical memory; so that simply reserving
- * PAGE_SIZE from mpg->mpf_physptr yields BUG()
- * in reserve_bootmem.
- */
- unsigned long size = PAGE_SIZE;
- unsigned long end = max_low_pfn * PAGE_SIZE;
- if (mpf->mpf_physptr + size > end)
- size = end - mpf->mpf_physptr;
- reserve_bootmem(mpf->mpf_physptr, size);
- }
-
- mpf_found = mpf;
- return 1;
- }
- bp += 4;
- length -= 16;
- }
- return 0;
-}
-
-void __init find_smp_config (void)
-{
- unsigned int address;
-
- /*
- * FIXME: Linux assumes you have 640K of base ram..
- * this continues the error...
- *
- * 1) Scan the bottom 1K for a signature
- * 2) Scan the top 1K of base RAM
- * 3) Scan the 64K of bios
- */
- if (smp_scan_config(0x0,0x400) ||
- smp_scan_config(639*0x400,0x400) ||
- smp_scan_config(0xF0000,0x10000))
- return;
- /*
- * If it is an SMP machine we should know now, unless the
- * configuration is in an EISA/MCA bus machine with an
- * extended bios data area.
- *
- * there is a real-mode segmented pointer pointing to the
- * 4K EBDA area at 0x40E, calculate and scan it here.
- *
- * NOTE! There are Linux loaders that will corrupt the EBDA
- * area, and as such this kind of SMP config may be less
- * trustworthy, simply because the SMP table may have been
- * stomped on during early boot. These loaders are buggy and
- * should be fixed.
- *
- * MP1.4 SPEC states to only scan first 1K of 4K EBDA.
- */
-
- address = get_bios_ebda();
- if (address)
- smp_scan_config(address, 0x400);
-}
-
-/* --------------------------------------------------------------------------
- ACPI-based MP Configuration
- --------------------------------------------------------------------------
*/
-
-#ifdef CONFIG_ACPI_BOOT
-
-void __init mp_register_lapic_address (
- u64 address)
-{
-#ifndef CONFIG_XEN
- mp_lapic_addr = (unsigned long) address;
-
- if (boot_cpu_physical_apicid == -1U)
- boot_cpu_physical_apicid = GET_APIC_ID(apic_read(APIC_ID));
-
- Dprintk("Boot CPU = %d\n", boot_cpu_physical_apicid);
-#endif
-}
-
-
-void __init mp_register_lapic (
- u8 id,
- u8 enabled)
-{
- struct mpc_config_processor processor;
- int boot_cpu = 0;
-
- if (MAX_APICS - id <= 0) {
- printk(KERN_WARNING "Processor #%d invalid (max %d)\n",
- id, MAX_APICS);
- return;
- }
-
- if (id == boot_cpu_physical_apicid)
- boot_cpu = 1;
-
-#ifndef CONFIG_XEN
- processor.mpc_type = MP_PROCESSOR;
- processor.mpc_apicid = id;
- processor.mpc_apicver = GET_APIC_VERSION(apic_read(APIC_LVR));
- processor.mpc_cpuflag = (enabled ? CPU_ENABLED : 0);
- processor.mpc_cpuflag |= (boot_cpu ? CPU_BOOTPROCESSOR : 0);
- processor.mpc_cpufeature = (boot_cpu_data.x86 << 8) |
- (boot_cpu_data.x86_model << 4) | boot_cpu_data.x86_mask;
- processor.mpc_featureflag = boot_cpu_data.x86_capability[0];
- processor.mpc_reserved[0] = 0;
- processor.mpc_reserved[1] = 0;
-#endif
-
- MP_processor_info(&processor);
-}
-
-#if defined(CONFIG_X86_IO_APIC) && (defined(CONFIG_ACPI_INTERPRETER) ||
defined(CONFIG_ACPI_BOOT))
-
-#define MP_ISA_BUS 0
-#define MP_MAX_IOAPIC_PIN 127
-
-struct mp_ioapic_routing {
- int apic_id;
- int gsi_base;
- int gsi_end;
- u32 pin_programmed[4];
-} mp_ioapic_routing[MAX_IO_APICS];
-
-
-static int mp_find_ioapic (
- int gsi)
-{
- int i = 0;
-
- /* Find the IOAPIC that manages this GSI. */
- for (i = 0; i < nr_ioapics; i++) {
- if ((gsi >= mp_ioapic_routing[i].gsi_base)
- && (gsi <= mp_ioapic_routing[i].gsi_end))
- return i;
- }
-
- printk(KERN_ERR "ERROR: Unable to locate IOAPIC for GSI %d\n", gsi);
-
- return -1;
-}
-
-
-void __init mp_register_ioapic (
- u8 id,
- u32 address,
- u32 gsi_base)
-{
- int idx = 0;
-
- if (nr_ioapics >= MAX_IO_APICS) {
- printk(KERN_ERR "ERROR: Max # of I/O APICs (%d) exceeded "
- "(found %d)\n", MAX_IO_APICS, nr_ioapics);
- panic("Recompile kernel with bigger MAX_IO_APICS!\n");
- }
- if (!address) {
- printk(KERN_ERR "WARNING: Bogus (zero) I/O APIC address"
- " found in MADT table, skipping!\n");
- return;
- }
-
- idx = nr_ioapics++;
-
- mp_ioapics[idx].mpc_type = MP_IOAPIC;
- mp_ioapics[idx].mpc_flags = MPC_APIC_USABLE;
- mp_ioapics[idx].mpc_apicaddr = address;
-
- mp_ioapics[idx].mpc_apicid = io_apic_get_unique_id(idx, id);
- mp_ioapics[idx].mpc_apicver = io_apic_get_version(idx);
-
- /*
- * Build basic GSI lookup table to facilitate gsi->io_apic lookups
- * and to prevent reprogramming of IOAPIC pins (PCI GSIs).
- */
- mp_ioapic_routing[idx].apic_id = mp_ioapics[idx].mpc_apicid;
- mp_ioapic_routing[idx].gsi_base = gsi_base;
- mp_ioapic_routing[idx].gsi_end = gsi_base +
- io_apic_get_redir_entries(idx);
-
- printk("IOAPIC[%d]: apic_id %d, version %d, address 0x%lx, "
- "GSI %d-%d\n", idx, mp_ioapics[idx].mpc_apicid,
- mp_ioapics[idx].mpc_apicver, mp_ioapics[idx].mpc_apicaddr,
- mp_ioapic_routing[idx].gsi_base,
- mp_ioapic_routing[idx].gsi_end);
-
- return;
-}
-
-
-void __init mp_override_legacy_irq (
- u8 bus_irq,
- u8 polarity,
- u8 trigger,
- u32 gsi)
-{
- struct mpc_config_intsrc intsrc;
- int ioapic = -1;
- int pin = -1;
-
- /*
- * Convert 'gsi' to 'ioapic.pin'.
- */
- ioapic = mp_find_ioapic(gsi);
- if (ioapic < 0)
- return;
- pin = gsi - mp_ioapic_routing[ioapic].gsi_base;
-
- /*
- * TBD: This check is for faulty timer entries, where the override
- * erroneously sets the trigger to level, resulting in a HUGE
- * increase of timer interrupts!
- */
- if ((bus_irq == 0) && (trigger == 3))
- trigger = 1;
-
- intsrc.mpc_type = MP_INTSRC;
- intsrc.mpc_irqtype = mp_INT;
- intsrc.mpc_irqflag = (trigger << 2) | polarity;
- intsrc.mpc_srcbus = MP_ISA_BUS;
- intsrc.mpc_srcbusirq = bus_irq; /* IRQ */
- intsrc.mpc_dstapic = mp_ioapics[ioapic].mpc_apicid; /* APIC ID */
- intsrc.mpc_dstirq = pin; /* INTIN# */
-
- Dprintk("Int: type %d, pol %d, trig %d, bus %d, irq %d, %d-%d\n",
- intsrc.mpc_irqtype, intsrc.mpc_irqflag & 3,
- (intsrc.mpc_irqflag >> 2) & 3, intsrc.mpc_srcbus,
- intsrc.mpc_srcbusirq, intsrc.mpc_dstapic, intsrc.mpc_dstirq);
-
- mp_irqs[mp_irq_entries] = intsrc;
- if (++mp_irq_entries == MAX_IRQ_SOURCES)
- panic("Max # of irq sources exceeded!\n");
-
- return;
-}
-
-
-void __init mp_config_acpi_legacy_irqs (void)
-{
- struct mpc_config_intsrc intsrc;
- int i = 0;
- int ioapic = -1;
-
- /*
- * Fabricate the legacy ISA bus (bus #31).
- */
- mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA;
- Dprintk("Bus #%d is ISA\n", MP_ISA_BUS);
-
- /*
- * ES7000 has no legacy identity mappings
- */
- if (es7000_plat)
- return;
-
- /*
- * Locate the IOAPIC that manages the ISA IRQs (0-15).
- */
- ioapic = mp_find_ioapic(0);
- if (ioapic < 0)
- return;
-
- intsrc.mpc_type = MP_INTSRC;
- intsrc.mpc_irqflag = 0; /* Conforming */
- intsrc.mpc_srcbus = MP_ISA_BUS;
- intsrc.mpc_dstapic = mp_ioapics[ioapic].mpc_apicid;
-
- /*
- * Use the default configuration for the IRQs 0-15. Unless
- * overriden by (MADT) interrupt source override entries.
- */
- for (i = 0; i < 16; i++) {
- int idx;
-
- for (idx = 0; idx < mp_irq_entries; idx++) {
- struct mpc_config_intsrc *irq = mp_irqs + idx;
-
- /* Do we already have a mapping for this ISA IRQ? */
- if (irq->mpc_srcbus == MP_ISA_BUS && irq->mpc_srcbusirq
== i)
- break;
-
- /* Do we already have a mapping for this IOAPIC pin */
- if ((irq->mpc_dstapic == intsrc.mpc_dstapic) &&
- (irq->mpc_dstirq == i))
- break;
- }
-
- if (idx != mp_irq_entries) {
- printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i);
- continue; /* IRQ already used */
- }
-
- intsrc.mpc_irqtype = mp_INT;
- intsrc.mpc_srcbusirq = i; /* Identity mapped */
- intsrc.mpc_dstirq = i;
-
- Dprintk("Int: type %d, pol %d, trig %d, bus %d, irq %d, "
- "%d-%d\n", intsrc.mpc_irqtype, intsrc.mpc_irqflag & 3,
- (intsrc.mpc_irqflag >> 2) & 3, intsrc.mpc_srcbus,
- intsrc.mpc_srcbusirq, intsrc.mpc_dstapic,
- intsrc.mpc_dstirq);
-
- mp_irqs[mp_irq_entries] = intsrc;
- if (++mp_irq_entries == MAX_IRQ_SOURCES)
- panic("Max # of irq sources exceeded!\n");
- }
-}
-
-int mp_register_gsi (u32 gsi, int edge_level, int active_high_low)
-{
- int ioapic = -1;
- int ioapic_pin = 0;
- int idx, bit = 0;
-
-#ifdef CONFIG_ACPI_BUS
- /* Don't set up the ACPI SCI because it's already set up */
- if (acpi_fadt.sci_int == gsi)
- return gsi;
-#endif
-
- ioapic = mp_find_ioapic(gsi);
- if (ioapic < 0) {
- printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi);
- return gsi;
- }
-
- ioapic_pin = gsi - mp_ioapic_routing[ioapic].gsi_base;
-
- if (ioapic_renumber_irq)
- gsi = ioapic_renumber_irq(ioapic, gsi);
-
- /*
- * Avoid pin reprogramming. PRTs typically include entries
- * with redundant pin->gsi mappings (but unique PCI devices);
- * we only program the IOAPIC on the first.
- */
- bit = ioapic_pin % 32;
- idx = (ioapic_pin < 32) ? 0 : (ioapic_pin / 32);
- if (idx > 3) {
- printk(KERN_ERR "Invalid reference to IOAPIC pin "
- "%d-%d\n", mp_ioapic_routing[ioapic].apic_id,
- ioapic_pin);
- return gsi;
- }
- if ((1<<bit) & mp_ioapic_routing[ioapic].pin_programmed[idx]) {
- Dprintk(KERN_DEBUG "Pin %d-%d already programmed\n",
- mp_ioapic_routing[ioapic].apic_id, ioapic_pin);
- return gsi;
- }
-
- mp_ioapic_routing[ioapic].pin_programmed[idx] |= (1<<bit);
-
- io_apic_set_pci_routing(ioapic, ioapic_pin, gsi,
- edge_level == ACPI_EDGE_SENSITIVE ? 0 : 1,
- active_high_low == ACPI_ACTIVE_HIGH ? 0 : 1);
- return gsi;
-}
-
-#endif /*CONFIG_X86_IO_APIC && (CONFIG_ACPI_INTERPRETER || CONFIG_ACPI_BOOT)*/
-#endif /*CONFIG_ACPI_BOOT*/
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/pci-dma.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/pci-dma.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,154 +0,0 @@
-/*
- * Dynamic DMA mapping support.
- *
- * On i386 there is no hardware dynamic DMA address translation,
- * so consistent alloc/free are merely page allocation/freeing.
- * The rest of the dynamic DMA mapping interface is implemented
- * in asm/pci.h.
- */
-
-#include <linux/types.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/pci.h>
-#include <linux/version.h>
-#include <asm/io.h>
-#include <asm-xen/balloon.h>
-#include <asm/tlbflush.h>
-
-struct dma_coherent_mem {
- void *virt_base;
- u32 device_base;
- int size;
- int flags;
- unsigned long *bitmap;
-};
-
-void *dma_alloc_coherent(struct device *dev, size_t size,
- dma_addr_t *dma_handle, int gfp)
-{
- void *ret;
- struct dma_coherent_mem *mem = dev ? dev->dma_mem : NULL;
- unsigned int order = get_order(size);
- unsigned long vstart;
- /* ignore region specifiers */
- gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
-
- if (mem) {
- int page = bitmap_find_free_region(mem->bitmap, mem->size,
- order);
- if (page >= 0) {
- *dma_handle = mem->device_base + (page << PAGE_SHIFT);
- ret = mem->virt_base + (page << PAGE_SHIFT);
- memset(ret, 0, size);
- return ret;
- }
- if (mem->flags & DMA_MEMORY_EXCLUSIVE)
- return NULL;
- }
-
- if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
- gfp |= GFP_DMA;
-
- vstart = __get_free_pages(gfp, order);
- ret = (void *)vstart;
-
- if (ret != NULL) {
- xen_contig_memory(vstart, order);
-
- memset(ret, 0, size);
- *dma_handle = virt_to_bus(ret);
- }
- return ret;
-}
-
-void dma_free_coherent(struct device *dev, size_t size,
- void *vaddr, dma_addr_t dma_handle)
-{
- struct dma_coherent_mem *mem = dev ? dev->dma_mem : NULL;
- int order = get_order(size);
-
- if (mem && vaddr >= mem->virt_base && vaddr < (mem->virt_base +
(mem->size << PAGE_SHIFT))) {
- int page = (vaddr - mem->virt_base) >> PAGE_SHIFT;
-
- bitmap_release_region(mem->bitmap, page, order);
- } else
- free_pages((unsigned long)vaddr, order);
-}
-
-int dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
- dma_addr_t device_addr, size_t size, int flags)
-{
- void __iomem *mem_base;
- int pages = size >> PAGE_SHIFT;
- int bitmap_size = (pages + 31)/32;
-
- if ((flags & (DMA_MEMORY_MAP | DMA_MEMORY_IO)) == 0)
- goto out;
- if (!size)
- goto out;
- if (dev->dma_mem)
- goto out;
-
- /* FIXME: this routine just ignores DMA_MEMORY_INCLUDES_CHILDREN */
-
- mem_base = ioremap(bus_addr, size);
- if (!mem_base)
- goto out;
-
- dev->dma_mem = kmalloc(sizeof(struct dma_coherent_mem), GFP_KERNEL);
- if (!dev->dma_mem)
- goto out;
- memset(dev->dma_mem, 0, sizeof(struct dma_coherent_mem));
- dev->dma_mem->bitmap = kmalloc(bitmap_size, GFP_KERNEL);
- if (!dev->dma_mem->bitmap)
- goto free1_out;
- memset(dev->dma_mem->bitmap, 0, bitmap_size);
-
- dev->dma_mem->virt_base = mem_base;
- dev->dma_mem->device_base = device_addr;
- dev->dma_mem->size = pages;
- dev->dma_mem->flags = flags;
-
- if (flags & DMA_MEMORY_MAP)
- return DMA_MEMORY_MAP;
-
- return DMA_MEMORY_IO;
-
- free1_out:
- kfree(dev->dma_mem->bitmap);
- out:
- return 0;
-}
-EXPORT_SYMBOL(dma_declare_coherent_memory);
-
-void dma_release_declared_memory(struct device *dev)
-{
- struct dma_coherent_mem *mem = dev->dma_mem;
-
- if(!mem)
- return;
- dev->dma_mem = NULL;
- iounmap(mem->virt_base);
- kfree(mem->bitmap);
- kfree(mem);
-}
-EXPORT_SYMBOL(dma_release_declared_memory);
-
-void *dma_mark_declared_memory_occupied(struct device *dev,
- dma_addr_t device_addr, size_t size)
-{
- struct dma_coherent_mem *mem = dev->dma_mem;
- int pages = (size + (device_addr & ~PAGE_MASK) + PAGE_SIZE - 1) >>
PAGE_SHIFT;
- int pos, err;
-
- if (!mem)
- return ERR_PTR(-EINVAL);
-
- pos = (device_addr - mem->device_base) >> PAGE_SHIFT;
- err = bitmap_allocate_region(mem->bitmap, pos, get_order(pages));
- if (err != 0)
- return ERR_PTR(err);
- return mem->virt_base + (pos << PAGE_SHIFT);
-}
-EXPORT_SYMBOL(dma_mark_declared_memory_occupied);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/process.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/process.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,769 +0,0 @@
-/*
- * linux/arch/i386/kernel/process.c
- *
- * Copyright (C) 1995 Linus Torvalds
- *
- * Pentium III FXSR, SSE support
- * Gareth Hughes <gareth@xxxxxxxxxxx>, May 2000
- */
-
-/*
- * This file handles the architecture-dependent parts of process handling..
- */
-
-#include <stdarg.h>
-
-#include <linux/cpu.h>
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/fs.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/elfcore.h>
-#include <linux/smp.h>
-#include <linux/smp_lock.h>
-#include <linux/stddef.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/user.h>
-#include <linux/a.out.h>
-#include <linux/interrupt.h>
-#include <linux/config.h>
-#include <linux/utsname.h>
-#include <linux/delay.h>
-#include <linux/reboot.h>
-#include <linux/init.h>
-#include <linux/mc146818rtc.h>
-#include <linux/module.h>
-#include <linux/kallsyms.h>
-#include <linux/ptrace.h>
-
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/ldt.h>
-#include <asm/processor.h>
-#include <asm/i387.h>
-#include <asm/irq.h>
-#include <asm/desc.h>
-#include <asm-xen/xen-public/physdev.h>
-#ifdef CONFIG_MATH_EMULATION
-#include <asm/math_emu.h>
-#endif
-
-#include <linux/irq.h>
-#include <linux/err.h>
-
-#include <asm/tlbflush.h>
-#include <asm/cpu.h>
-
-asmlinkage void ret_from_fork(void) __asm__("ret_from_fork");
-
-int hlt_counter;
-
-unsigned long boot_option_idle_override = 0;
-EXPORT_SYMBOL(boot_option_idle_override);
-
-/*
- * Return saved PC of a blocked thread.
- */
-unsigned long thread_saved_pc(struct task_struct *tsk)
-{
- return ((unsigned long *)tsk->thread.esp)[3];
-}
-
-/*
- * Powermanagement idle function, if any..
- */
-void (*pm_idle)(void);
-static cpumask_t cpu_idle_map;
-
-void disable_hlt(void)
-{
- hlt_counter++;
-}
-
-EXPORT_SYMBOL(disable_hlt);
-
-void enable_hlt(void)
-{
- hlt_counter--;
-}
-
-EXPORT_SYMBOL(enable_hlt);
-
-/* XXX XEN doesn't use default_idle(), poll_idle(). Use xen_idle() instead. */
-extern void stop_hz_timer(void);
-extern void start_hz_timer(void);
-void xen_idle(void)
-{
- local_irq_disable();
-
- if (need_resched()) {
- local_irq_enable();
- } else {
- stop_hz_timer();
- HYPERVISOR_block(); /* implicit local_irq_enable() */
- start_hz_timer();
- }
-}
-
-#ifdef CONFIG_HOTPLUG_CPU
-#include <asm/nmi.h>
-/* We don't actually take CPU down, just spin without interrupts. */
-static inline void play_dead(void)
-{
- /* Ack it */
- __get_cpu_var(cpu_state) = CPU_DEAD;
-
- /* We shouldn't have to disable interrupts while dead, but
- * some interrupts just don't seem to go away, and this makes
- * it "work" for testing purposes. */
- /* Death loop */
- while (__get_cpu_var(cpu_state) != CPU_UP_PREPARE)
- HYPERVISOR_yield();
-
- local_irq_disable();
- __flush_tlb_all();
- cpu_set(smp_processor_id(), cpu_online_map);
- local_irq_enable();
-}
-#else
-static inline void play_dead(void)
-{
- BUG();
-}
-#endif /* CONFIG_HOTPLUG_CPU */
-
-/*
- * The idle thread. There's no useful work to be
- * done, so just try to conserve power and have a
- * low exit latency (ie sit in a loop waiting for
- * somebody to say that they'd like to reschedule)
- */
-void cpu_idle (void)
-{
- int cpu = _smp_processor_id();
-
- /* endless idle loop with no priority at all */
- while (1) {
- while (!need_resched()) {
-
- if (cpu_isset(cpu, cpu_idle_map))
- cpu_clear(cpu, cpu_idle_map);
- rmb();
-
- if (cpu_is_offline(cpu)) {
-#if defined(CONFIG_XEN) && defined(CONFIG_HOTPLUG_CPU)
- /* Tell hypervisor to take vcpu down. */
- HYPERVISOR_vcpu_down(cpu);
-#endif
- play_dead();
- }
-
- irq_stat[cpu].idle_timestamp = jiffies;
- xen_idle();
- }
- schedule();
- }
-}
-
-void cpu_idle_wait(void)
-{
- int cpu;
- cpumask_t map;
-
- for_each_online_cpu(cpu)
- cpu_set(cpu, cpu_idle_map);
-
- wmb();
- do {
- ssleep(1);
- cpus_and(map, cpu_idle_map, cpu_online_map);
- } while (!cpus_empty(map));
-}
-EXPORT_SYMBOL_GPL(cpu_idle_wait);
-
-/* XXX XEN doesn't use mwait_idle(), select_idle_routine(), idle_setup(). */
-/* Always use xen_idle() instead. */
-void __init select_idle_routine(const struct cpuinfo_x86 *c) {}
-
-void show_regs(struct pt_regs * regs)
-{
- printk("\n");
- printk("Pid: %d, comm: %20s\n", current->pid, current->comm);
- printk("EIP: %04x:[<%08lx>] CPU: %d\n",0xffff & regs->xcs,regs->eip,
smp_processor_id());
- print_symbol("EIP is at %s\n", regs->eip);
-
- if (regs->xcs & 2)
- printk(" ESP: %04x:%08lx",0xffff & regs->xss,regs->esp);
- printk(" EFLAGS: %08lx %s (%s)\n",
- regs->eflags, print_tainted(), system_utsname.release);
- printk("EAX: %08lx EBX: %08lx ECX: %08lx EDX: %08lx\n",
- regs->eax,regs->ebx,regs->ecx,regs->edx);
- printk("ESI: %08lx EDI: %08lx EBP: %08lx",
- regs->esi, regs->edi, regs->ebp);
- printk(" DS: %04x ES: %04x\n",
- 0xffff & regs->xds,0xffff & regs->xes);
-
- show_trace(NULL, ®s->esp);
-}
-
-/*
- * This gets run with %ebx containing the
- * function to call, and %edx containing
- * the "args".
- */
-extern void kernel_thread_helper(void);
-__asm__(".section .text\n"
- ".align 4\n"
- "kernel_thread_helper:\n\t"
- "movl %edx,%eax\n\t"
- "pushl %edx\n\t"
- "call *%ebx\n\t"
- "pushl %eax\n\t"
- "call do_exit\n"
- ".previous");
-
-/*
- * Create a kernel thread
- */
-int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
-{
- struct pt_regs regs;
-
- memset(®s, 0, sizeof(regs));
-
- regs.ebx = (unsigned long) fn;
- regs.edx = (unsigned long) arg;
-
- regs.xds = __USER_DS;
- regs.xes = __USER_DS;
- regs.orig_eax = -1;
- regs.eip = (unsigned long) kernel_thread_helper;
- regs.xcs = __KERNEL_CS;
- regs.eflags = X86_EFLAGS_IF | X86_EFLAGS_SF | X86_EFLAGS_PF | 0x2;
-
- /* Ok, create the new process.. */
- return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, ®s, 0, NULL,
NULL);
-}
-
-/*
- * Free current thread data structures etc..
- */
-void exit_thread(void)
-{
- struct task_struct *tsk = current;
- struct thread_struct *t = &tsk->thread;
-
- /* The process may have allocated an io port bitmap... nuke it. */
- if (unlikely(NULL != t->io_bitmap_ptr)) {
- physdev_op_t op = { 0 };
- op.cmd = PHYSDEVOP_SET_IOBITMAP;
- HYPERVISOR_physdev_op(&op);
- kfree(t->io_bitmap_ptr);
- t->io_bitmap_ptr = NULL;
- }
-}
-
-void flush_thread(void)
-{
- struct task_struct *tsk = current;
-
- memset(tsk->thread.debugreg, 0, sizeof(unsigned long)*8);
- memset(tsk->thread.tls_array, 0, sizeof(tsk->thread.tls_array));
- /*
- * Forget coprocessor state..
- */
- clear_fpu(tsk);
- clear_used_math();
-}
-
-void release_thread(struct task_struct *dead_task)
-{
- if (dead_task->mm) {
- // temporary debugging check
- if (dead_task->mm->context.size) {
- printk("WARNING: dead process %8s still has LDT?
<%p/%d>\n",
- dead_task->comm,
- dead_task->mm->context.ldt,
- dead_task->mm->context.size);
- BUG();
- }
- }
-
- release_vm86_irqs(dead_task);
-}
-
-/*
- * This gets called before we allocate a new thread and copy
- * the current task into it.
- */
-void prepare_to_copy(struct task_struct *tsk)
-{
- unlazy_fpu(tsk);
-}
-
-int copy_thread(int nr, unsigned long clone_flags, unsigned long esp,
- unsigned long unused,
- struct task_struct * p, struct pt_regs * regs)
-{
- struct pt_regs * childregs;
- struct task_struct *tsk;
- int err;
-
- childregs = ((struct pt_regs *) (THREAD_SIZE + (unsigned long)
p->thread_info)) - 1;
- *childregs = *regs;
- childregs->eax = 0;
- childregs->esp = esp;
-
- p->thread.esp = (unsigned long) childregs;
- p->thread.esp0 = (unsigned long) (childregs+1);
-
- p->thread.eip = (unsigned long) ret_from_fork;
-
- savesegment(fs,p->thread.fs);
- savesegment(gs,p->thread.gs);
-
- tsk = current;
- if (unlikely(NULL != tsk->thread.io_bitmap_ptr)) {
- p->thread.io_bitmap_ptr = kmalloc(IO_BITMAP_BYTES, GFP_KERNEL);
- if (!p->thread.io_bitmap_ptr) {
- p->thread.io_bitmap_max = 0;
- return -ENOMEM;
- }
- memcpy(p->thread.io_bitmap_ptr, tsk->thread.io_bitmap_ptr,
- IO_BITMAP_BYTES);
- }
-
- /*
- * Set a new TLS for the child thread?
- */
- if (clone_flags & CLONE_SETTLS) {
- struct desc_struct *desc;
- struct user_desc info;
- int idx;
-
- err = -EFAULT;
- if (copy_from_user(&info, (void __user *)childregs->esi,
sizeof(info)))
- goto out;
- err = -EINVAL;
- if (LDT_empty(&info))
- goto out;
-
- idx = info.entry_number;
- if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX)
- goto out;
-
- desc = p->thread.tls_array + idx - GDT_ENTRY_TLS_MIN;
- desc->a = LDT_entry_a(&info);
- desc->b = LDT_entry_b(&info);
- }
-
- p->thread.io_pl = current->thread.io_pl;
-
- err = 0;
- out:
- if (err && p->thread.io_bitmap_ptr) {
- kfree(p->thread.io_bitmap_ptr);
- p->thread.io_bitmap_max = 0;
- }
- return err;
-}
-
-/*
- * fill in the user structure for a core dump..
- */
-void dump_thread(struct pt_regs * regs, struct user * dump)
-{
- int i;
-
-/* changed the size calculations - should hopefully work better. lbt */
- dump->magic = CMAGIC;
- dump->start_code = 0;
- dump->start_stack = regs->esp & ~(PAGE_SIZE - 1);
- dump->u_tsize = ((unsigned long) current->mm->end_code) >> PAGE_SHIFT;
- dump->u_dsize = ((unsigned long) (current->mm->brk + (PAGE_SIZE-1))) >>
PAGE_SHIFT;
- dump->u_dsize -= dump->u_tsize;
- dump->u_ssize = 0;
- for (i = 0; i < 8; i++)
- dump->u_debugreg[i] = current->thread.debugreg[i];
-
- if (dump->start_stack < TASK_SIZE)
- dump->u_ssize = ((unsigned long) (TASK_SIZE -
dump->start_stack)) >> PAGE_SHIFT;
-
- dump->regs.ebx = regs->ebx;
- dump->regs.ecx = regs->ecx;
- dump->regs.edx = regs->edx;
- dump->regs.esi = regs->esi;
- dump->regs.edi = regs->edi;
- dump->regs.ebp = regs->ebp;
- dump->regs.eax = regs->eax;
- dump->regs.ds = regs->xds;
- dump->regs.es = regs->xes;
- savesegment(fs,dump->regs.fs);
- savesegment(gs,dump->regs.gs);
- dump->regs.orig_eax = regs->orig_eax;
- dump->regs.eip = regs->eip;
- dump->regs.cs = regs->xcs;
- dump->regs.eflags = regs->eflags;
- dump->regs.esp = regs->esp;
- dump->regs.ss = regs->xss;
-
- dump->u_fpvalid = dump_fpu (regs, &dump->i387);
-}
-
-/*
- * Capture the user space registers if the task is not running (in user space)
- */
-int dump_task_regs(struct task_struct *tsk, elf_gregset_t *regs)
-{
- struct pt_regs ptregs;
-
- ptregs = *(struct pt_regs *)
- ((unsigned long)tsk->thread_info+THREAD_SIZE - sizeof(ptregs));
- ptregs.xcs &= 0xffff;
- ptregs.xds &= 0xffff;
- ptregs.xes &= 0xffff;
- ptregs.xss &= 0xffff;
-
- elf_core_copy_regs(regs, &ptregs);
-
- boot_option_idle_override = 1;
- return 1;
-}
-
-/*
- * This special macro can be used to load a debugging register
- */
-#define loaddebug(thread,register) \
- HYPERVISOR_set_debugreg((register), \
- (thread->debugreg[register]))
-
-/*
- * switch_to(x,yn) should switch tasks from x to y.
- *
- * We fsave/fwait so that an exception goes off at the right time
- * (as a call from the fsave or fwait in effect) rather than to
- * the wrong process. Lazy FP saving no longer makes any sense
- * with modern CPU's, and this simplifies a lot of things (SMP
- * and UP become the same).
- *
- * NOTE! We used to use the x86 hardware context switching. The
- * reason for not using it any more becomes apparent when you
- * try to recover gracefully from saved state that is no longer
- * valid (stale segment register values in particular). With the
- * hardware task-switch, there is no way to fix up bad state in
- * a reasonable manner.
- *
- * The fact that Intel documents the hardware task-switching to
- * be slow is a fairly red herring - this code is not noticeably
- * faster. However, there _is_ some room for improvement here,
- * so the performance issues may eventually be a valid point.
- * More important, however, is the fact that this allows us much
- * more flexibility.
- *
- * The return value (in %eax) will be the "prev" task after
- * the task-switch, and shows up in ret_from_fork in entry.S,
- * for example.
- */
-struct task_struct fastcall * __switch_to(struct task_struct *prev_p, struct
task_struct *next_p)
-{
- struct thread_struct *prev = &prev_p->thread,
- *next = &next_p->thread;
- int cpu = smp_processor_id();
- struct tss_struct *tss = &per_cpu(init_tss, cpu);
- physdev_op_t iopl_op, iobmp_op;
- multicall_entry_t _mcl[8], *mcl = _mcl;
-
- /* XEN NOTE: FS/GS saved in switch_mm(), not here. */
-
- /*
- * This is basically '__unlazy_fpu', except that we queue a
- * multicall to indicate FPU task switch, rather than
- * synchronously trapping to Xen.
- */
- if (prev_p->thread_info->status & TS_USEDFPU) {
- __save_init_fpu(prev_p); /* _not_ save_init_fpu() */
- mcl->op = __HYPERVISOR_fpu_taskswitch;
- mcl->args[0] = 1;
- mcl++;
- }
-
- /*
- * Reload esp0, LDT and the page table pointer:
- * This is load_esp0(tss, next) with a multicall.
- */
- tss->esp0 = next->esp0;
- mcl->op = __HYPERVISOR_stack_switch;
- mcl->args[0] = tss->ss0;
- mcl->args[1] = tss->esp0;
- mcl++;
-
- /*
- * Load the per-thread Thread-Local Storage descriptor.
- * This is load_TLS(next, cpu) with multicalls.
- */
-#define C(i) do { \
- if (unlikely(next->tls_array[i].a != prev->tls_array[i].a || \
- next->tls_array[i].b != prev->tls_array[i].b)) { \
- mcl->op = __HYPERVISOR_update_descriptor; \
- mcl->args[0] = virt_to_machine(&get_cpu_gdt_table(cpu) \
- [GDT_ENTRY_TLS_MIN + i]); \
- mcl->args[1] = ((u32 *)&next->tls_array[i])[0]; \
- mcl->args[2] = ((u32 *)&next->tls_array[i])[1]; \
- mcl++; \
- } \
-} while (0)
- C(0); C(1); C(2);
-#undef C
-
- if (unlikely(prev->io_pl != next->io_pl)) {
- iopl_op.cmd = PHYSDEVOP_SET_IOPL;
- iopl_op.u.set_iopl.iopl = next->io_pl;
- mcl->op = __HYPERVISOR_physdev_op;
- mcl->args[0] = (unsigned long)&iopl_op;
- mcl++;
- }
-
- if (unlikely(prev->io_bitmap_ptr || next->io_bitmap_ptr)) {
- iobmp_op.cmd =
- PHYSDEVOP_SET_IOBITMAP;
- iobmp_op.u.set_iobitmap.bitmap =
- (unsigned long)next->io_bitmap_ptr;
- iobmp_op.u.set_iobitmap.nr_ports =
- next->io_bitmap_ptr ? IO_BITMAP_BITS : 0;
- mcl->op = __HYPERVISOR_physdev_op;
- mcl->args[0] = (unsigned long)&iobmp_op;
- mcl++;
- }
-
- (void)HYPERVISOR_multicall(_mcl, mcl - _mcl);
-
- /*
- * Restore %fs and %gs if needed.
- */
- if (unlikely(next->fs | next->gs)) {
- loadsegment(fs, next->fs);
- loadsegment(gs, next->gs);
- }
-
- /*
- * Now maybe reload the debug registers
- */
- if (unlikely(next->debugreg[7])) {
- loaddebug(next, 0);
- loaddebug(next, 1);
- loaddebug(next, 2);
- loaddebug(next, 3);
- /* no 4 and 5 */
- loaddebug(next, 6);
- loaddebug(next, 7);
- }
-
- return prev_p;
-}
-
-asmlinkage int sys_fork(struct pt_regs regs)
-{
- return do_fork(SIGCHLD, regs.esp, ®s, 0, NULL, NULL);
-}
-
-asmlinkage int sys_clone(struct pt_regs regs)
-{
- unsigned long clone_flags;
- unsigned long newsp;
- int __user *parent_tidptr, *child_tidptr;
-
- clone_flags = regs.ebx;
- newsp = regs.ecx;
- parent_tidptr = (int __user *)regs.edx;
- child_tidptr = (int __user *)regs.edi;
- if (!newsp)
- newsp = regs.esp;
- return do_fork(clone_flags, newsp, ®s, 0, parent_tidptr,
child_tidptr);
-}
-
-/*
- * This is trivial, and on the face of it looks like it
- * could equally well be done in user mode.
- *
- * Not so, for quite unobvious reasons - register pressure.
- * In user mode vfork() cannot have a stack frame, and if
- * done by calling the "clone()" system call directly, you
- * do not have enough call-clobbered registers to hold all
- * the information you need.
- */
-asmlinkage int sys_vfork(struct pt_regs regs)
-{
- return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, regs.esp, ®s, 0,
NULL, NULL);
-}
-
-/*
- * sys_execve() executes a new program.
- */
-asmlinkage int sys_execve(struct pt_regs regs)
-{
- int error;
- char * filename;
-
- filename = getname((char __user *) regs.ebx);
- error = PTR_ERR(filename);
- if (IS_ERR(filename))
- goto out;
- error = do_execve(filename,
- (char __user * __user *) regs.ecx,
- (char __user * __user *) regs.edx,
- ®s);
- if (error == 0) {
- task_lock(current);
- current->ptrace &= ~PT_DTRACE;
- task_unlock(current);
- /* Make sure we don't return using sysenter.. */
- set_thread_flag(TIF_IRET);
- }
- putname(filename);
-out:
- return error;
-}
-
-#define top_esp (THREAD_SIZE - sizeof(unsigned long))
-#define top_ebp (THREAD_SIZE - 2*sizeof(unsigned long))
-
-unsigned long get_wchan(struct task_struct *p)
-{
- unsigned long ebp, esp, eip;
- unsigned long stack_page;
- int count = 0;
- if (!p || p == current || p->state == TASK_RUNNING)
- return 0;
- stack_page = (unsigned long)p->thread_info;
- esp = p->thread.esp;
- if (!stack_page || esp < stack_page || esp > top_esp+stack_page)
- return 0;
- /* include/asm-i386/system.h:switch_to() pushes ebp last. */
- ebp = *(unsigned long *) esp;
- do {
- if (ebp < stack_page || ebp > top_ebp+stack_page)
- return 0;
- eip = *(unsigned long *) (ebp+4);
- if (!in_sched_functions(eip))
- return eip;
- ebp = *(unsigned long *) ebp;
- } while (count++ < 16);
- return 0;
-}
-
-/*
- * sys_alloc_thread_area: get a yet unused TLS descriptor index.
- */
-static int get_free_idx(void)
-{
- struct thread_struct *t = ¤t->thread;
- int idx;
-
- for (idx = 0; idx < GDT_ENTRY_TLS_ENTRIES; idx++)
- if (desc_empty(t->tls_array + idx))
- return idx + GDT_ENTRY_TLS_MIN;
- return -ESRCH;
-}
-
-/*
- * Set a given TLS descriptor:
- */
-asmlinkage int sys_set_thread_area(struct user_desc __user *u_info)
-{
- struct thread_struct *t = ¤t->thread;
- struct user_desc info;
- struct desc_struct *desc;
- int cpu, idx;
-
- if (copy_from_user(&info, u_info, sizeof(info)))
- return -EFAULT;
- idx = info.entry_number;
-
- /*
- * index -1 means the kernel should try to find and
- * allocate an empty descriptor:
- */
- if (idx == -1) {
- idx = get_free_idx();
- if (idx < 0)
- return idx;
- if (put_user(idx, &u_info->entry_number))
- return -EFAULT;
- }
-
- if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX)
- return -EINVAL;
-
- desc = t->tls_array + idx - GDT_ENTRY_TLS_MIN;
-
- /*
- * We must not get preempted while modifying the TLS.
- */
- cpu = get_cpu();
-
- if (LDT_empty(&info)) {
- desc->a = 0;
- desc->b = 0;
- } else {
- desc->a = LDT_entry_a(&info);
- desc->b = LDT_entry_b(&info);
- }
- load_TLS(t, cpu);
-
- put_cpu();
-
- return 0;
-}
-
-/*
- * Get the current Thread-Local Storage area:
- */
-
-#define GET_BASE(desc) ( \
- (((desc)->a >> 16) & 0x0000ffff) | \
- (((desc)->b << 16) & 0x00ff0000) | \
- ( (desc)->b & 0xff000000) )
-
-#define GET_LIMIT(desc) ( \
- ((desc)->a & 0x0ffff) | \
- ((desc)->b & 0xf0000) )
-
-#define GET_32BIT(desc) (((desc)->b >> 22) & 1)
-#define GET_CONTENTS(desc) (((desc)->b >> 10) & 3)
-#define GET_WRITABLE(desc) (((desc)->b >> 9) & 1)
-#define GET_LIMIT_PAGES(desc) (((desc)->b >> 23) & 1)
-#define GET_PRESENT(desc) (((desc)->b >> 15) & 1)
-#define GET_USEABLE(desc) (((desc)->b >> 20) & 1)
-
-asmlinkage int sys_get_thread_area(struct user_desc __user *u_info)
-{
- struct user_desc info;
- struct desc_struct *desc;
- int idx;
-
- if (get_user(idx, &u_info->entry_number))
- return -EFAULT;
- if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX)
- return -EINVAL;
-
- desc = current->thread.tls_array + idx - GDT_ENTRY_TLS_MIN;
-
- info.entry_number = idx;
- info.base_addr = GET_BASE(desc);
- info.limit = GET_LIMIT(desc);
- info.seg_32bit = GET_32BIT(desc);
- info.contents = GET_CONTENTS(desc);
- info.read_exec_only = !GET_WRITABLE(desc);
- info.limit_in_pages = GET_LIMIT_PAGES(desc);
- info.seg_not_present = !GET_PRESENT(desc);
- info.useable = GET_USEABLE(desc);
-
- if (copy_to_user(u_info, &info, sizeof(info)))
- return -EFAULT;
- return 0;
-}
-
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/setup.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/setup.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,1649 +0,0 @@
-/*
- * linux/arch/i386/kernel/setup.c
- *
- * Copyright (C) 1995 Linus Torvalds
- *
- * Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999
- *
- * Memory region support
- * David Parsons <orc@xxxxxxxxxxxxxx>, July-August 1999
- *
- * Added E820 sanitization routine (removes overlapping memory regions);
- * Brian Moyle <bmoyle@xxxxxxxxxx>, February 2001
- *
- * Moved CPU detection code to cpu/${cpu}.c
- * Patrick Mochel <mochel@xxxxxxxx>, March 2002
- *
- * Provisions for empty E820 memory regions (reported by certain BIOSes).
- * Alex Achenbach <xela@xxxxxxx>, December 2002.
- *
- */
-
-/*
- * This file handles the architecture-dependent parts of initialization
- */
-
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/tty.h>
-#include <linux/ioport.h>
-#include <linux/acpi.h>
-#include <linux/apm_bios.h>
-#include <linux/initrd.h>
-#include <linux/bootmem.h>
-#include <linux/seq_file.h>
-#include <linux/console.h>
-#include <linux/mca.h>
-#include <linux/root_dev.h>
-#include <linux/highmem.h>
-#include <linux/module.h>
-#include <linux/efi.h>
-#include <linux/init.h>
-#include <linux/edd.h>
-#include <linux/kernel.h>
-#include <linux/percpu.h>
-#include <linux/notifier.h>
-#include <video/edid.h>
-#include <asm/e820.h>
-#include <asm/mpspec.h>
-#include <asm/setup.h>
-#include <asm/arch_hooks.h>
-#include <asm/sections.h>
-#include <asm/io_apic.h>
-#include <asm/ist.h>
-#include <asm/io.h>
-#include <asm-xen/hypervisor.h>
-#include <asm-xen/xen-public/physdev.h>
-#include "setup_arch_pre.h"
-#include <bios_ebda.h>
-
-/* Allows setting of maximum possible memory size */
-static unsigned long xen_override_max_pfn;
-
-static int xen_panic_event(struct notifier_block *, unsigned long, void *);
-static struct notifier_block xen_panic_block = {
- xen_panic_event, NULL, 0 /* try to go last */
-};
-
-int disable_pse __initdata = 0;
-
-/*
- * Machine setup..
- */
-
-#ifdef CONFIG_EFI
-int efi_enabled = 0;
-EXPORT_SYMBOL(efi_enabled);
-#endif
-
-/* cpu data as detected by the assembly code in head.S */
-struct cpuinfo_x86 new_cpu_data __initdata = { 0, 0, 0, 0, -1, 0, 1, 0, -1 };
-/* common cpu data for all cpus */
-struct cpuinfo_x86 boot_cpu_data = { 0, 0, 0, 0, -1, 0, 1, 0, -1 };
-
-unsigned long mmu_cr4_features;
-EXPORT_SYMBOL_GPL(mmu_cr4_features);
-
-#ifdef CONFIG_ACPI_INTERPRETER
- int acpi_disabled = 0;
-#else
- int acpi_disabled = 1;
-#endif
-EXPORT_SYMBOL(acpi_disabled);
-
-#ifdef CONFIG_ACPI_BOOT
-int __initdata acpi_force = 0;
-extern acpi_interrupt_flags acpi_sci_flags;
-#endif
-
-/* for MCA, but anyone else can use it if they want */
-unsigned int machine_id;
-unsigned int machine_submodel_id;
-unsigned int BIOS_revision;
-unsigned int mca_pentium_flag;
-
-/* For PCI or other memory-mapped resources */
-unsigned long pci_mem_start = 0x10000000;
-
-/* Boot loader ID as an integer, for the benefit of proc_dointvec */
-int bootloader_type;
-
-/* user-defined highmem size */
-static unsigned int highmem_pages = -1;
-
-/*
- * Setup options
- */
-struct drive_info_struct { char dummy[32]; } drive_info;
-struct screen_info screen_info;
-struct apm_info apm_info;
-struct sys_desc_table_struct {
- unsigned short length;
- unsigned char table[0];
-};
-struct edid_info edid_info;
-struct ist_info ist_info;
-struct e820map e820;
-
-unsigned char aux_device_present;
-
-extern void early_cpu_init(void);
-extern void dmi_scan_machine(void);
-extern void generic_apic_probe(char *);
-extern int root_mountflags;
-
-unsigned long saved_videomode;
-
-#define RAMDISK_IMAGE_START_MASK 0x07FF
-#define RAMDISK_PROMPT_FLAG 0x8000
-#define RAMDISK_LOAD_FLAG 0x4000
-
-static char command_line[COMMAND_LINE_SIZE];
-
-unsigned char __initdata boot_params[PARAM_SIZE];
-
-static struct resource data_resource = {
- .name = "Kernel data",
- .start = 0,
- .end = 0,
- .flags = IORESOURCE_BUSY | IORESOURCE_MEM
-};
-
-static struct resource code_resource = {
- .name = "Kernel code",
- .start = 0,
- .end = 0,
- .flags = IORESOURCE_BUSY | IORESOURCE_MEM
-};
-
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
-static struct resource system_rom_resource = {
- .name = "System ROM",
- .start = 0xf0000,
- .end = 0xfffff,
- .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-};
-
-static struct resource extension_rom_resource = {
- .name = "Extension ROM",
- .start = 0xe0000,
- .end = 0xeffff,
- .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-};
-
-static struct resource adapter_rom_resources[] = { {
- .name = "Adapter ROM",
- .start = 0xc8000,
- .end = 0,
- .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-}, {
- .name = "Adapter ROM",
- .start = 0,
- .end = 0,
- .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-}, {
- .name = "Adapter ROM",
- .start = 0,
- .end = 0,
- .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-}, {
- .name = "Adapter ROM",
- .start = 0,
- .end = 0,
- .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-}, {
- .name = "Adapter ROM",
- .start = 0,
- .end = 0,
- .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-}, {
- .name = "Adapter ROM",
- .start = 0,
- .end = 0,
- .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-} };
-
-#define ADAPTER_ROM_RESOURCES \
- (sizeof adapter_rom_resources / sizeof adapter_rom_resources[0])
-
-static struct resource video_rom_resource = {
- .name = "Video ROM",
- .start = 0xc0000,
- .end = 0xc7fff,
- .flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-};
-#endif
-
-static struct resource video_ram_resource = {
- .name = "Video RAM area",
- .start = 0xa0000,
- .end = 0xbffff,
- .flags = IORESOURCE_BUSY | IORESOURCE_MEM
-};
-
-static struct resource standard_io_resources[] = { {
- .name = "dma1",
- .start = 0x0000,
- .end = 0x001f,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO
-}, {
- .name = "pic1",
- .start = 0x0020,
- .end = 0x0021,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO
-}, {
- .name = "timer0",
- .start = 0x0040,
- .end = 0x0043,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO
-}, {
- .name = "timer1",
- .start = 0x0050,
- .end = 0x0053,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO
-}, {
- .name = "keyboard",
- .start = 0x0060,
- .end = 0x006f,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO
-}, {
- .name = "dma page reg",
- .start = 0x0080,
- .end = 0x008f,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO
-}, {
- .name = "pic2",
- .start = 0x00a0,
- .end = 0x00a1,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO
-}, {
- .name = "dma2",
- .start = 0x00c0,
- .end = 0x00df,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO
-}, {
- .name = "fpu",
- .start = 0x00f0,
- .end = 0x00ff,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO
-} };
-
-#define STANDARD_IO_RESOURCES \
- (sizeof standard_io_resources / sizeof standard_io_resources[0])
-
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
-#define romsignature(x) (*(unsigned short *)(x) == 0xaa55)
-
-static int __init romchecksum(unsigned char *rom, unsigned long length)
-{
- unsigned char *p, sum = 0;
-
- for (p = rom; p < rom + length; p++)
- sum += *p;
- return sum == 0;
-}
-
-static void __init probe_roms(void)
-{
- unsigned long start, length, upper;
- unsigned char *rom;
- int i;
-
- /* Nothing to do if not running in dom0. */
- if (!(xen_start_info.flags & SIF_INITDOMAIN))
- return;
-
- /* video rom */
- upper = adapter_rom_resources[0].start;
- for (start = video_rom_resource.start; start < upper; start += 2048) {
- rom = isa_bus_to_virt(start);
- if (!romsignature(rom))
- continue;
-
- video_rom_resource.start = start;
-
- /* 0 < length <= 0x7f * 512, historically */
- length = rom[2] * 512;
-
- /* if checksum okay, trust length byte */
- if (length && romchecksum(rom, length))
- video_rom_resource.end = start + length - 1;
-
- request_resource(&iomem_resource, &video_rom_resource);
- break;
- }
-
- start = (video_rom_resource.end + 1 + 2047) & ~2047UL;
- if (start < upper)
- start = upper;
-
- /* system rom */
- request_resource(&iomem_resource, &system_rom_resource);
- upper = system_rom_resource.start;
-
- /* check for extension rom (ignore length byte!) */
- rom = isa_bus_to_virt(extension_rom_resource.start);
- if (romsignature(rom)) {
- length = extension_rom_resource.end -
extension_rom_resource.start + 1;
- if (romchecksum(rom, length)) {
- request_resource(&iomem_resource,
&extension_rom_resource);
- upper = extension_rom_resource.start;
- }
- }
-
- /* check for adapter roms on 2k boundaries */
- for (i = 0; i < ADAPTER_ROM_RESOURCES && start < upper; start += 2048) {
- rom = isa_bus_to_virt(start);
- if (!romsignature(rom))
- continue;
-
- /* 0 < length <= 0x7f * 512, historically */
- length = rom[2] * 512;
-
- /* but accept any length that fits if checksum okay */
- if (!length || start + length > upper || !romchecksum(rom,
length))
- continue;
-
- adapter_rom_resources[i].start = start;
- adapter_rom_resources[i].end = start + length - 1;
- request_resource(&iomem_resource, &adapter_rom_resources[i]);
-
- start = adapter_rom_resources[i++].end & ~2047UL;
- }
-}
-#endif
-
-/*
- * Point at the empty zero page to start with. We map the real shared_info
- * page as soon as fixmap is up and running.
- */
-shared_info_t *HYPERVISOR_shared_info = (shared_info_t *)empty_zero_page;
-EXPORT_SYMBOL(HYPERVISOR_shared_info);
-
-unsigned int *phys_to_machine_mapping, *pfn_to_mfn_frame_list;
-EXPORT_SYMBOL(phys_to_machine_mapping);
-
-/* Raw start-of-day parameters from the hypervisor. */
-union xen_start_info_union xen_start_info_union;
-
-static void __init limit_regions(unsigned long long size)
-{
- unsigned long long current_addr = 0;
- int i;
-
- if (efi_enabled) {
- for (i = 0; i < memmap.nr_map; i++) {
- current_addr = memmap.map[i].phys_addr +
- (memmap.map[i].num_pages << 12);
- if (memmap.map[i].type == EFI_CONVENTIONAL_MEMORY) {
- if (current_addr >= size) {
- memmap.map[i].num_pages -=
- (((current_addr-size) +
PAGE_SIZE-1) >> PAGE_SHIFT);
- memmap.nr_map = i + 1;
- return;
- }
- }
- }
- }
- for (i = 0; i < e820.nr_map; i++) {
- if (e820.map[i].type == E820_RAM) {
- current_addr = e820.map[i].addr + e820.map[i].size;
- if (current_addr >= size) {
- e820.map[i].size -= current_addr-size;
- e820.nr_map = i + 1;
- return;
- }
- }
- }
-}
-
-static void __init add_memory_region(unsigned long long start,
- unsigned long long size, int type)
-{
- int x;
-
- if (!efi_enabled) {
- x = e820.nr_map;
-
- if (x == E820MAX) {
- printk(KERN_ERR "Ooops! Too many entries in the memory
map!\n");
- return;
- }
-
- e820.map[x].addr = start;
- e820.map[x].size = size;
- e820.map[x].type = type;
- e820.nr_map++;
- }
-} /* add_memory_region */
-
-#define E820_DEBUG 1
-
-static void __init print_memory_map(char *who)
-{
- int i;
-
- for (i = 0; i < e820.nr_map; i++) {
- printk(" %s: %016Lx - %016Lx ", who,
- e820.map[i].addr,
- e820.map[i].addr + e820.map[i].size);
- switch (e820.map[i].type) {
- case E820_RAM: printk("(usable)\n");
- break;
- case E820_RESERVED:
- printk("(reserved)\n");
- break;
- case E820_ACPI:
- printk("(ACPI data)\n");
- break;
- case E820_NVS:
- printk("(ACPI NVS)\n");
- break;
- default: printk("type %lu\n", e820.map[i].type);
- break;
- }
- }
-}
-
-#if 0
-/*
- * Sanitize the BIOS e820 map.
- *
- * Some e820 responses include overlapping entries. The following
- * replaces the original e820 map with a new one, removing overlaps.
- *
- */
-struct change_member {
- struct e820entry *pbios; /* pointer to original bios entry */
- unsigned long long addr; /* address for this change point */
-};
-struct change_member change_point_list[2*E820MAX] __initdata;
-struct change_member *change_point[2*E820MAX] __initdata;
-struct e820entry *overlap_list[E820MAX] __initdata;
-struct e820entry new_bios[E820MAX] __initdata;
-
-static int __init sanitize_e820_map(struct e820entry * biosmap, char * pnr_map)
-{
- struct change_member *change_tmp;
- unsigned long current_type, last_type;
- unsigned long long last_addr;
- int chgidx, still_changing;
- int overlap_entries;
- int new_bios_entry;
- int old_nr, new_nr, chg_nr;
- int i;
-
- /*
- Visually we're performing the following (1,2,3,4 = memory
types)...
-
- Sample memory map (w/overlaps):
- ____22__________________
- ______________________4_
- ____1111________________
- _44_____________________
- 11111111________________
- ____________________33__
- ___________44___________
- __________33333_________
- ______________22________
- ___________________2222_
- _________111111111______
- _____________________11_
- _________________4______
-
- Sanitized equivalent (no overlap):
- 1_______________________
- _44_____________________
- ___1____________________
- ____22__________________
- ______11________________
- _________1______________
- __________3_____________
- ___________44___________
- _____________33_________
- _______________2________
- ________________1_______
- _________________4______
- ___________________2____
- ____________________33__
- ______________________4_
- */
-
- /* if there's only one memory region, don't bother */
- if (*pnr_map < 2)
- return -1;
-
- old_nr = *pnr_map;
-
- /* bail out if we find any unreasonable addresses in bios map */
- for (i=0; i<old_nr; i++)
- if (biosmap[i].addr + biosmap[i].size < biosmap[i].addr)
- return -1;
-
- /* create pointers for initial change-point information (for sorting) */
- for (i=0; i < 2*old_nr; i++)
- change_point[i] = &change_point_list[i];
-
- /* record all known change-points (starting and ending addresses),
- omitting those that are for empty memory regions */
- chgidx = 0;
- for (i=0; i < old_nr; i++) {
- if (biosmap[i].size != 0) {
- change_point[chgidx]->addr = biosmap[i].addr;
- change_point[chgidx++]->pbios = &biosmap[i];
- change_point[chgidx]->addr = biosmap[i].addr +
biosmap[i].size;
- change_point[chgidx++]->pbios = &biosmap[i];
- }
- }
- chg_nr = chgidx; /* true number of change-points */
-
- /* sort change-point list by memory addresses (low -> high) */
- still_changing = 1;
- while (still_changing) {
- still_changing = 0;
- for (i=1; i < chg_nr; i++) {
- /* if <current_addr> > <last_addr>, swap */
- /* or, if current=<start_addr> & last=<end_addr>, swap
*/
- if ((change_point[i]->addr < change_point[i-1]->addr) ||
- ((change_point[i]->addr ==
change_point[i-1]->addr) &&
- (change_point[i]->addr ==
change_point[i]->pbios->addr) &&
- (change_point[i-1]->addr !=
change_point[i-1]->pbios->addr))
- )
- {
- change_tmp = change_point[i];
- change_point[i] = change_point[i-1];
- change_point[i-1] = change_tmp;
- still_changing=1;
- }
- }
- }
-
- /* create a new bios memory map, removing overlaps */
- overlap_entries=0; /* number of entries in the overlap table */
- new_bios_entry=0; /* index for creating new bios map entries */
- last_type = 0; /* start with undefined memory type */
- last_addr = 0; /* start with 0 as last starting address */
- /* loop through change-points, determining affect on the new bios map */
- for (chgidx=0; chgidx < chg_nr; chgidx++)
- {
- /* keep track of all overlapping bios entries */
- if (change_point[chgidx]->addr ==
change_point[chgidx]->pbios->addr)
- {
- /* add map entry to overlap list (> 1 entry implies an
overlap) */
-
overlap_list[overlap_entries++]=change_point[chgidx]->pbios;
- }
- else
- {
- /* remove entry from list (order independent, so swap
with last) */
- for (i=0; i<overlap_entries; i++)
- {
- if (overlap_list[i] ==
change_point[chgidx]->pbios)
- overlap_list[i] =
overlap_list[overlap_entries-1];
- }
- overlap_entries--;
- }
- /* if there are overlapping entries, decide which "type" to use
*/
- /* (larger value takes precedence -- 1=usable,
2,3,4,4+=unusable) */
- current_type = 0;
- for (i=0; i<overlap_entries; i++)
- if (overlap_list[i]->type > current_type)
- current_type = overlap_list[i]->type;
- /* continue building up new bios map based on this information
*/
- if (current_type != last_type) {
- if (last_type != 0) {
- new_bios[new_bios_entry].size =
- change_point[chgidx]->addr - last_addr;
- /* move forward only if the new size was
non-zero */
- if (new_bios[new_bios_entry].size != 0)
- if (++new_bios_entry >= E820MAX)
- break; /* no more space left
for new bios entries */
- }
- if (current_type != 0) {
- new_bios[new_bios_entry].addr =
change_point[chgidx]->addr;
- new_bios[new_bios_entry].type = current_type;
- last_addr=change_point[chgidx]->addr;
- }
- last_type = current_type;
- }
- }
- new_nr = new_bios_entry; /* retain count for new bios entries */
-
- /* copy new bios mapping into original location */
- memcpy(biosmap, new_bios, new_nr*sizeof(struct e820entry));
- *pnr_map = new_nr;
-
- return 0;
-}
-
-/*
- * Copy the BIOS e820 map into a safe place.
- *
- * Sanity-check it while we're at it..
- *
- * If we're lucky and live on a modern system, the setup code
- * will have given us a memory map that we can use to properly
- * set up memory. If we aren't, we'll fake a memory map.
- *
- * We check to see that the memory map contains at least 2 elements
- * before we'll use it, because the detection code in setup.S may
- * not be perfect and most every PC known to man has two memory
- * regions: one from 0 to 640k, and one from 1mb up. (The IBM
- * thinkpad 560x, for example, does not cooperate with the memory
- * detection code.)
- */
-static int __init copy_e820_map(struct e820entry * biosmap, int nr_map)
-{
- /* Only one memory region (or negative)? Ignore it */
- if (nr_map < 2)
- return -1;
-
- do {
- unsigned long long start = biosmap->addr;
- unsigned long long size = biosmap->size;
- unsigned long long end = start + size;
- unsigned long type = biosmap->type;
-
- /* Overflow in 64 bits? Ignore the memory map. */
- if (start > end)
- return -1;
-
- /*
- * Some BIOSes claim RAM in the 640k - 1M region.
- * Not right. Fix it up.
- */
- if (type == E820_RAM) {
- if (start < 0x100000ULL && end > 0xA0000ULL) {
- if (start < 0xA0000ULL)
- add_memory_region(start,
0xA0000ULL-start, type);
- if (end <= 0x100000ULL)
- continue;
- start = 0x100000ULL;
- size = end - start;
- }
- }
- add_memory_region(start, size, type);
- } while (biosmap++,--nr_map);
- return 0;
-}
-#endif
-
-#if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
-struct edd edd;
-#ifdef CONFIG_EDD_MODULE
-EXPORT_SYMBOL(edd);
-#endif
-/**
- * copy_edd() - Copy the BIOS EDD information
- * from boot_params into a safe place.
- *
- */
-static inline void copy_edd(void)
-{
- memcpy(edd.mbr_signature, EDD_MBR_SIGNATURE, sizeof(edd.mbr_signature));
- memcpy(edd.edd_info, EDD_BUF, sizeof(edd.edd_info));
- edd.mbr_signature_nr = EDD_MBR_SIG_NR;
- edd.edd_info_nr = EDD_NR;
-}
-#else
-static inline void copy_edd(void)
-{
-}
-#endif
-
-/*
- * Do NOT EVER look at the BIOS memory size location.
- * It does not work on many machines.
- */
-#define LOWMEMSIZE() (0x9f000)
-
-static void __init parse_cmdline_early (char ** cmdline_p)
-{
- char c = ' ', *to = command_line, *from = saved_command_line;
- int len = 0, max_cmdline;
- int userdef = 0;
-
- if ((max_cmdline = MAX_GUEST_CMDLINE) > COMMAND_LINE_SIZE)
- max_cmdline = COMMAND_LINE_SIZE;
- memcpy(saved_command_line, xen_start_info.cmd_line, max_cmdline);
- /* Save unparsed command line copy for /proc/cmdline */
- saved_command_line[max_cmdline-1] = '\0';
-
- for (;;) {
- if (c != ' ')
- goto next_char;
- /*
- * "mem=nopentium" disables the 4MB page tables.
- * "mem=XXX[kKmM]" defines a memory region from HIGH_MEM
- * to <mem>, overriding the bios size.
- * "memmap=XXX[KkmM]@XXX[KkmM]" defines a memory region from
- * <start> to <start>+<mem>, overriding the bios size.
- *
- * HPA tells me bootloaders need to parse mem=, so no new
- * option should be mem= [also see Documentation/i386/boot.txt]
- */
- if (!memcmp(from, "mem=", 4)) {
- if (to != command_line)
- to--;
- if (!memcmp(from+4, "nopentium", 9)) {
- from += 9+4;
- clear_bit(X86_FEATURE_PSE,
boot_cpu_data.x86_capability);
- disable_pse = 1;
- } else {
- /* If the user specifies memory size, we
- * limit the BIOS-provided memory map to
- * that size. exactmap can be used to specify
- * the exact map. mem=number can be used to
- * trim the existing memory map.
- */
- unsigned long long mem_size;
-
- mem_size = memparse(from+4, &from);
-#if 0
- limit_regions(mem_size);
- userdef=1;
-#else
- xen_override_max_pfn =
- (unsigned long)(mem_size>>PAGE_SHIFT);
-#endif
- }
- }
-
- else if (!memcmp(from, "memmap=", 7)) {
- if (to != command_line)
- to--;
- if (!memcmp(from+7, "exactmap", 8)) {
- from += 8+7;
- e820.nr_map = 0;
- userdef = 1;
- } else {
- /* If the user specifies memory size, we
- * limit the BIOS-provided memory map to
- * that size. exactmap can be used to specify
- * the exact map. mem=number can be used to
- * trim the existing memory map.
- */
- unsigned long long start_at, mem_size;
-
- mem_size = memparse(from+7, &from);
- if (*from == '@') {
- start_at = memparse(from+1, &from);
- add_memory_region(start_at, mem_size,
E820_RAM);
- } else if (*from == '#') {
- start_at = memparse(from+1, &from);
- add_memory_region(start_at, mem_size,
E820_ACPI);
- } else if (*from == '$') {
- start_at = memparse(from+1, &from);
- add_memory_region(start_at, mem_size,
E820_RESERVED);
- } else {
- limit_regions(mem_size);
- userdef=1;
- }
- }
- }
-
- else if (!memcmp(from, "noexec=", 7))
- noexec_setup(from + 7);
-
-
-#ifdef CONFIG_X86_MPPARSE
- /*
- * If the BIOS enumerates physical processors before logical,
- * maxcpus=N at enumeration-time can be used to disable HT.
- */
- else if (!memcmp(from, "maxcpus=", 8)) {
- extern unsigned int maxcpus;
-
- maxcpus = simple_strtoul(from + 8, NULL, 0);
- }
-#endif
-
-#ifdef CONFIG_ACPI_BOOT
- /* "acpi=off" disables both ACPI table parsing and interpreter
*/
- else if (!memcmp(from, "acpi=off", 8)) {
- disable_acpi();
- }
-
- /* acpi=force to over-ride black-list */
- else if (!memcmp(from, "acpi=force", 10)) {
- acpi_force = 1;
- acpi_ht = 1;
- acpi_disabled = 0;
- }
-
- /* acpi=strict disables out-of-spec workarounds */
- else if (!memcmp(from, "acpi=strict", 11)) {
- acpi_strict = 1;
- }
-
- /* Limit ACPI just to boot-time to enable HT */
- else if (!memcmp(from, "acpi=ht", 7)) {
- if (!acpi_force)
- disable_acpi();
- acpi_ht = 1;
- }
-
- /* "pci=noacpi" disable ACPI IRQ routing and PCI scan */
- else if (!memcmp(from, "pci=noacpi", 10)) {
- acpi_disable_pci();
- }
- /* "acpi=noirq" disables ACPI interrupt routing */
- else if (!memcmp(from, "acpi=noirq", 10)) {
- acpi_noirq_set();
- }
-
- else if (!memcmp(from, "acpi_sci=edge", 13))
- acpi_sci_flags.trigger = 1;
-
- else if (!memcmp(from, "acpi_sci=level", 14))
- acpi_sci_flags.trigger = 3;
-
- else if (!memcmp(from, "acpi_sci=high", 13))
- acpi_sci_flags.polarity = 1;
-
- else if (!memcmp(from, "acpi_sci=low", 12))
- acpi_sci_flags.polarity = 3;
-
-#ifdef CONFIG_X86_IO_APIC
- else if (!memcmp(from, "acpi_skip_timer_override", 24))
- acpi_skip_timer_override = 1;
-#endif
-
-#ifdef CONFIG_X86_LOCAL_APIC
- /* disable IO-APIC */
- else if (!memcmp(from, "noapic", 6))
- disable_ioapic_setup();
-#endif /* CONFIG_X86_LOCAL_APIC */
-#endif /* CONFIG_ACPI_BOOT */
-
- /*
- * highmem=size forces highmem to be exactly 'size' bytes.
- * This works even on boxes that have no highmem otherwise.
- * This also works to reduce highmem size on bigger boxes.
- */
- else if (!memcmp(from, "highmem=", 8))
- highmem_pages = memparse(from+8, &from) >> PAGE_SHIFT;
-
- /*
- * vmalloc=size forces the vmalloc area to be exactly 'size'
- * bytes. This can be used to increase (or decrease) the
- * vmalloc area - the default is 128m.
- */
- else if (!memcmp(from, "vmalloc=", 8))
- __VMALLOC_RESERVE = memparse(from+8, &from);
-
- next_char:
- c = *(from++);
- if (!c)
- break;
- if (COMMAND_LINE_SIZE <= ++len)
- break;
- *(to++) = c;
- }
- *to = '\0';
- *cmdline_p = command_line;
- if (userdef) {
- printk(KERN_INFO "user-defined physical RAM map:\n");
- print_memory_map("user");
- }
-}
-
-#if 0 /* !XEN */
-/*
- * Callback for efi_memory_walk.
- */
-static int __init
-efi_find_max_pfn(unsigned long start, unsigned long end, void *arg)
-{
- unsigned long *max_pfn = arg, pfn;
-
- if (start < end) {
- pfn = PFN_UP(end -1);
- if (pfn > *max_pfn)
- *max_pfn = pfn;
- }
- return 0;
-}
-
-
-/*
- * Find the highest page frame number we have available
- */
-void __init find_max_pfn(void)
-{
- int i;
-
- max_pfn = 0;
- if (efi_enabled) {
- efi_memmap_walk(efi_find_max_pfn, &max_pfn);
- return;
- }
-
- for (i = 0; i < e820.nr_map; i++) {
- unsigned long start, end;
- /* RAM? */
- if (e820.map[i].type != E820_RAM)
- continue;
- start = PFN_UP(e820.map[i].addr);
- end = PFN_DOWN(e820.map[i].addr + e820.map[i].size);
- if (start >= end)
- continue;
- if (end > max_pfn)
- max_pfn = end;
- }
-}
-#else
-/* We don't use the fake e820 because we need to respond to user override. */
-void __init find_max_pfn(void)
-{
- if ( xen_override_max_pfn < xen_start_info.nr_pages )
- xen_override_max_pfn = xen_start_info.nr_pages;
- max_pfn = xen_override_max_pfn;
-}
-#endif /* XEN */
-
-/*
- * Determine low and high memory ranges:
- */
-unsigned long __init find_max_low_pfn(void)
-{
- unsigned long max_low_pfn;
-
- max_low_pfn = max_pfn;
- if (max_low_pfn > MAXMEM_PFN) {
- if (highmem_pages == -1)
- highmem_pages = max_pfn - MAXMEM_PFN;
- if (highmem_pages + MAXMEM_PFN < max_pfn)
- max_pfn = MAXMEM_PFN + highmem_pages;
- if (highmem_pages + MAXMEM_PFN > max_pfn) {
- printk("only %luMB highmem pages available, ignoring
highmem size of %uMB.\n", pages_to_mb(max_pfn - MAXMEM_PFN),
pages_to_mb(highmem_pages));
- highmem_pages = 0;
- }
- max_low_pfn = MAXMEM_PFN;
-#ifndef CONFIG_HIGHMEM
- /* Maximum memory usable is what is directly addressable */
- printk(KERN_WARNING "Warning only %ldMB will be used.\n",
- MAXMEM>>20);
- if (max_pfn > MAX_NONPAE_PFN)
- printk(KERN_WARNING "Use a PAE enabled kernel.\n");
- else
- printk(KERN_WARNING "Use a HIGHMEM enabled kernel.\n");
- max_pfn = MAXMEM_PFN;
-#else /* !CONFIG_HIGHMEM */
-#ifndef CONFIG_X86_PAE
- if (max_pfn > MAX_NONPAE_PFN) {
- max_pfn = MAX_NONPAE_PFN;
- printk(KERN_WARNING "Warning only 4GB will be used.\n");
- printk(KERN_WARNING "Use a PAE enabled kernel.\n");
- }
-#endif /* !CONFIG_X86_PAE */
-#endif /* !CONFIG_HIGHMEM */
- } else {
- if (highmem_pages == -1)
- highmem_pages = 0;
-#ifdef CONFIG_HIGHMEM
- if (highmem_pages >= max_pfn) {
- printk(KERN_ERR "highmem size specified (%uMB) is
bigger than pages available (%luMB)!.\n", pages_to_mb(highmem_pages),
pages_to_mb(max_pfn));
- highmem_pages = 0;
- }
- if (highmem_pages) {
- if (max_low_pfn-highmem_pages < 64*1024*1024/PAGE_SIZE){
- printk(KERN_ERR "highmem size %uMB results in
smaller than 64MB lowmem, ignoring it.\n", pages_to_mb(highmem_pages));
- highmem_pages = 0;
- }
- max_low_pfn -= highmem_pages;
- }
-#else
- if (highmem_pages)
- printk(KERN_ERR "ignoring highmem size on non-highmem
kernel!\n");
-#endif
- }
- return max_low_pfn;
-}
-
-#ifndef CONFIG_DISCONTIGMEM
-
-/*
- * Free all available memory for boot time allocation. Used
- * as a callback function by efi_memory_walk()
- */
-
-static int __init
-free_available_memory(unsigned long start, unsigned long end, void *arg)
-{
- /* check max_low_pfn */
- if (start >= ((max_low_pfn + 1) << PAGE_SHIFT))
- return 0;
- if (end >= ((max_low_pfn + 1) << PAGE_SHIFT))
- end = (max_low_pfn + 1) << PAGE_SHIFT;
- if (start < end)
- free_bootmem(start, end - start);
-
- return 0;
-}
-/*
- * Register fully available low RAM pages with the bootmem allocator.
- */
-static void __init register_bootmem_low_pages(unsigned long max_low_pfn)
-{
- int i;
-
- if (efi_enabled) {
- efi_memmap_walk(free_available_memory, NULL);
- return;
- }
- for (i = 0; i < e820.nr_map; i++) {
- unsigned long curr_pfn, last_pfn, size;
- /*
- * Reserve usable low memory
- */
- if (e820.map[i].type != E820_RAM)
- continue;
- /*
- * We are rounding up the start address of usable memory:
- */
- curr_pfn = PFN_UP(e820.map[i].addr);
- if (curr_pfn >= max_low_pfn)
- continue;
- /*
- * ... and at the end of the usable range downwards:
- */
- last_pfn = PFN_DOWN(e820.map[i].addr + e820.map[i].size);
-
- if (last_pfn > max_low_pfn)
- last_pfn = max_low_pfn;
-
- /*
- * .. finally, did all the rounding and playing
- * around just make the area go away?
- */
- if (last_pfn <= curr_pfn)
- continue;
-
- size = last_pfn - curr_pfn;
- free_bootmem(PFN_PHYS(curr_pfn), PFN_PHYS(size));
- }
-}
-
-/*
- * workaround for Dell systems that neglect to reserve EBDA
- */
-static void __init reserve_ebda_region(void)
-{
- unsigned int addr;
- addr = get_bios_ebda();
- if (addr)
- reserve_bootmem(addr, PAGE_SIZE);
-}
-
-static unsigned long __init setup_memory(void)
-{
- unsigned long bootmap_size, start_pfn, max_low_pfn;
-
- /*
- * partially used pages are not usable - thus
- * we are rounding upwards:
- */
- start_pfn = PFN_UP(__pa(xen_start_info.pt_base)) +
xen_start_info.nr_pt_frames;
-
- find_max_pfn();
-
- max_low_pfn = find_max_low_pfn();
-
-#ifdef CONFIG_HIGHMEM
- highstart_pfn = highend_pfn = max_pfn;
- if (max_pfn > max_low_pfn) {
- highstart_pfn = max_low_pfn;
- }
- printk(KERN_NOTICE "%ldMB HIGHMEM available.\n",
- pages_to_mb(highend_pfn - highstart_pfn));
-#endif
- printk(KERN_NOTICE "%ldMB LOWMEM available.\n",
- pages_to_mb(max_low_pfn));
- /*
- * Initialize the boot-time allocator (with low memory only):
- */
- bootmap_size = init_bootmem(start_pfn, max_low_pfn);
-
- register_bootmem_low_pages(max_low_pfn);
-
- /*
- * Reserve the bootmem bitmap itself as well. We do this in two
- * steps (first step was init_bootmem()) because this catches
- * the (very unlikely) case of us accidentally initializing the
- * bootmem allocator with an invalid RAM area.
- */
- reserve_bootmem(HIGH_MEMORY, (PFN_PHYS(start_pfn) +
- bootmap_size + PAGE_SIZE-1) - (HIGH_MEMORY));
-
- /* reserve EBDA region, it's a 4K region */
- reserve_ebda_region();
-
- /* could be an AMD 768MPX chipset. Reserve a page before VGA to prevent
- PCI prefetch into it (errata #56). Usually the page is reserved anyways,
- unless you have no PS/2 mouse plugged in. */
- if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
- boot_cpu_data.x86 == 6)
- reserve_bootmem(0xa0000 - 4096, 4096);
-
-#ifdef CONFIG_SMP
- /*
- * But first pinch a few for the stack/trampoline stuff
- * FIXME: Don't need the extra page at 4K, but need to fix
- * trampoline before removing it. (see the GDT stuff)
- */
- reserve_bootmem(PAGE_SIZE, PAGE_SIZE);
-#endif
-#ifdef CONFIG_ACPI_SLEEP
- /*
- * Reserve low memory region for sleep support.
- */
- acpi_reserve_bootmem();
-#endif
-
-#ifdef CONFIG_BLK_DEV_INITRD
- if (xen_start_info.mod_start) {
- if (INITRD_START + INITRD_SIZE <= (max_low_pfn << PAGE_SHIFT)) {
- /*reserve_bootmem(INITRD_START, INITRD_SIZE);*/
- initrd_start = INITRD_START + PAGE_OFFSET;
- initrd_end = initrd_start+INITRD_SIZE;
- initrd_below_start_ok = 1;
- }
- else {
- printk(KERN_ERR "initrd extends beyond end of memory "
- "(0x%08lx > 0x%08lx)\ndisabling initrd\n",
- INITRD_START + INITRD_SIZE,
- max_low_pfn << PAGE_SHIFT);
- initrd_start = 0;
- }
- }
-#endif
-
- phys_to_machine_mapping = (unsigned int *)xen_start_info.mfn_list;
-
- return max_low_pfn;
-}
-#else
-extern unsigned long setup_memory(void);
-#endif /* !CONFIG_DISCONTIGMEM */
-
-/*
- * Request address space for all standard RAM and ROM resources
- * and also for regions reported as reserved by the e820.
- */
-static void __init
-legacy_init_iomem_resources(struct resource *code_resource, struct resource
*data_resource)
-{
- int i;
-
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
- probe_roms();
-#endif
- for (i = 0; i < e820.nr_map; i++) {
- struct resource *res;
- if (e820.map[i].addr + e820.map[i].size > 0x100000000ULL)
- continue;
- res = alloc_bootmem_low(sizeof(struct resource));
- switch (e820.map[i].type) {
- case E820_RAM: res->name = "System RAM"; break;
- case E820_ACPI: res->name = "ACPI Tables"; break;
- case E820_NVS: res->name = "ACPI Non-volatile Storage"; break;
- default: res->name = "reserved";
- }
- res->start = e820.map[i].addr;
- res->end = res->start + e820.map[i].size - 1;
- res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
- request_resource(&iomem_resource, res);
- if (e820.map[i].type == E820_RAM) {
- /*
- * We don't know which RAM region contains kernel data,
- * so we try it repeatedly and let the resource manager
- * test it.
- */
- request_resource(res, code_resource);
- request_resource(res, data_resource);
- }
- }
-}
-
-/*
- * Request address space for all standard resources
- */
-static void __init register_memory(void)
-{
- unsigned long gapstart, gapsize;
- unsigned long long last;
- int i;
-
- if (efi_enabled)
- efi_initialize_iomem_resources(&code_resource, &data_resource);
- else
- legacy_init_iomem_resources(&code_resource, &data_resource);
-
- if (xen_start_info.flags & SIF_INITDOMAIN)
- /* EFI systems may still have VGA */
- request_resource(&iomem_resource, &video_ram_resource);
-
- /* request I/O space for devices used on all i[345]86 PCs */
- for (i = 0; i < STANDARD_IO_RESOURCES; i++)
- request_resource(&ioport_resource, &standard_io_resources[i]);
-
- /*
- * Search for the bigest gap in the low 32 bits of the e820
- * memory space.
- */
- last = 0x100000000ull;
- gapstart = 0x10000000;
- gapsize = 0x400000;
- i = e820.nr_map;
- while (--i >= 0) {
- unsigned long long start = e820.map[i].addr;
- unsigned long long end = start + e820.map[i].size;
-
- /*
- * Since "last" is at most 4GB, we know we'll
- * fit in 32 bits if this condition is true
- */
- if (last > end) {
- unsigned long gap = last - end;
-
- if (gap > gapsize) {
- gapsize = gap;
- gapstart = end;
- }
- }
- if (start < last)
- last = start;
- }
-
- /*
- * Start allocating dynamic PCI memory a bit into the gap,
- * aligned up to the nearest megabyte.
- *
- * Question: should we try to pad it up a bit (do something
- * like " + (gapsize >> 3)" in there too?). We now have the
- * technology.
- */
- pci_mem_start = (gapstart + 0xfffff) & ~0xfffff;
-
- printk("Allocating PCI resources starting at %08lx (gap:
%08lx:%08lx)\n",
- pci_mem_start, gapstart, gapsize);
-}
-
-/* Use inline assembly to define this because the nops are defined
- as inline assembly strings in the include files and we cannot
- get them easily into strings. */
-asm("\t.data\nintelnops: "
- GENERIC_NOP1 GENERIC_NOP2 GENERIC_NOP3 GENERIC_NOP4 GENERIC_NOP5
GENERIC_NOP6
- GENERIC_NOP7 GENERIC_NOP8);
-asm("\t.data\nk8nops: "
- K8_NOP1 K8_NOP2 K8_NOP3 K8_NOP4 K8_NOP5 K8_NOP6
- K8_NOP7 K8_NOP8);
-asm("\t.data\nk7nops: "
- K7_NOP1 K7_NOP2 K7_NOP3 K7_NOP4 K7_NOP5 K7_NOP6
- K7_NOP7 K7_NOP8);
-
-extern unsigned char intelnops[], k8nops[], k7nops[];
-static unsigned char *intel_nops[ASM_NOP_MAX+1] = {
- NULL,
- intelnops,
- intelnops + 1,
- intelnops + 1 + 2,
- intelnops + 1 + 2 + 3,
- intelnops + 1 + 2 + 3 + 4,
- intelnops + 1 + 2 + 3 + 4 + 5,
- intelnops + 1 + 2 + 3 + 4 + 5 + 6,
- intelnops + 1 + 2 + 3 + 4 + 5 + 6 + 7,
-};
-static unsigned char *k8_nops[ASM_NOP_MAX+1] = {
- NULL,
- k8nops,
- k8nops + 1,
- k8nops + 1 + 2,
- k8nops + 1 + 2 + 3,
- k8nops + 1 + 2 + 3 + 4,
- k8nops + 1 + 2 + 3 + 4 + 5,
- k8nops + 1 + 2 + 3 + 4 + 5 + 6,
- k8nops + 1 + 2 + 3 + 4 + 5 + 6 + 7,
-};
-static unsigned char *k7_nops[ASM_NOP_MAX+1] = {
- NULL,
- k7nops,
- k7nops + 1,
- k7nops + 1 + 2,
- k7nops + 1 + 2 + 3,
- k7nops + 1 + 2 + 3 + 4,
- k7nops + 1 + 2 + 3 + 4 + 5,
- k7nops + 1 + 2 + 3 + 4 + 5 + 6,
- k7nops + 1 + 2 + 3 + 4 + 5 + 6 + 7,
-};
-static struct nop {
- int cpuid;
- unsigned char **noptable;
-} noptypes[] = {
- { X86_FEATURE_K8, k8_nops },
- { X86_FEATURE_K7, k7_nops },
- { -1, NULL }
-};
-
-/* Replace instructions with better alternatives for this CPU type.
-
- This runs before SMP is initialized to avoid SMP problems with
- self modifying code. This implies that assymetric systems where
- APs have less capabilities than the boot processor are not handled.
- In this case boot with "noreplacement". */
-void apply_alternatives(void *start, void *end)
-{
- struct alt_instr *a;
- int diff, i, k;
- unsigned char **noptable = intel_nops;
- for (i = 0; noptypes[i].cpuid >= 0; i++) {
- if (boot_cpu_has(noptypes[i].cpuid)) {
- noptable = noptypes[i].noptable;
- break;
- }
- }
- for (a = start; (void *)a < end; a++) {
- if (!boot_cpu_has(a->cpuid))
- continue;
- BUG_ON(a->replacementlen > a->instrlen);
- memcpy(a->instr, a->replacement, a->replacementlen);
- diff = a->instrlen - a->replacementlen;
- /* Pad the rest with nops */
- for (i = a->replacementlen; diff > 0; diff -= k, i += k) {
- k = diff;
- if (k > ASM_NOP_MAX)
- k = ASM_NOP_MAX;
- memcpy(a->instr + i, noptable[k], k);
- }
- }
-}
-
-static int no_replacement __initdata = 0;
-
-void __init alternative_instructions(void)
-{
- extern struct alt_instr __alt_instructions[], __alt_instructions_end[];
- if (no_replacement)
- return;
- apply_alternatives(__alt_instructions, __alt_instructions_end);
-}
-
-static int __init noreplacement_setup(char *s)
-{
- no_replacement = 1;
- return 0;
-}
-
-__setup("noreplacement", noreplacement_setup);
-
-static char * __init machine_specific_memory_setup(void);
-
-#ifdef CONFIG_MCA
-static void set_mca_bus(int x)
-{
- MCA_bus = x;
-}
-#else
-static void set_mca_bus(int x) { }
-#endif
-
-/*
- * Determine if we were loaded by an EFI loader. If so, then we have also been
- * passed the efi memmap, systab, etc., so we should use these data structures
- * for initialization. Note, the efi init code path is determined by the
- * global efi_enabled. This allows the same kernel image to be used on existing
- * systems (with a traditional BIOS) as well as on EFI systems.
- */
-void __init setup_arch(char **cmdline_p)
-{
- int i, j;
- physdev_op_t op;
- unsigned long max_low_pfn;
-
- /* Force a quick death if the kernel panics. */
- extern int panic_timeout;
- if (panic_timeout == 0)
- panic_timeout = 1;
-
- /* Register a call for panic conditions. */
- notifier_chain_register(&panic_notifier_list, &xen_panic_block);
-
- HYPERVISOR_vm_assist(VMASST_CMD_enable, VMASST_TYPE_4gb_segments);
- HYPERVISOR_vm_assist(VMASST_CMD_enable,
- VMASST_TYPE_writable_pagetables);
-
- memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data));
- early_cpu_init();
-
- /*
- * FIXME: This isn't an official loader_type right
- * now but does currently work with elilo.
- * If we were configured as an EFI kernel, check to make
- * sure that we were loaded correctly from elilo and that
- * the system table is valid. If not, then initialize normally.
- */
-#ifdef CONFIG_EFI
- if ((LOADER_TYPE == 0x50) && EFI_SYSTAB)
- efi_enabled = 1;
-#endif
-
- /* This must be initialized to UNNAMED_MAJOR for ipconfig to work
- properly. Setting ROOT_DEV to default to /dev/ram0 breaks initrd.
- */
- ROOT_DEV = MKDEV(UNNAMED_MAJOR,0);
- drive_info = DRIVE_INFO;
- screen_info = SCREEN_INFO;
- edid_info = EDID_INFO;
- apm_info.bios = APM_BIOS_INFO;
- ist_info = IST_INFO;
- saved_videomode = VIDEO_MODE;
- if( SYS_DESC_TABLE.length != 0 ) {
- set_mca_bus(SYS_DESC_TABLE.table[3] & 0x2);
- machine_id = SYS_DESC_TABLE.table[0];
- machine_submodel_id = SYS_DESC_TABLE.table[1];
- BIOS_revision = SYS_DESC_TABLE.table[2];
- }
- aux_device_present = AUX_DEVICE_INFO;
- bootloader_type = LOADER_TYPE;
-
-#ifdef CONFIG_XEN_PHYSDEV_ACCESS
- /* This is drawn from a dump from vgacon:startup in standard Linux. */
- screen_info.orig_video_mode = 3;
- screen_info.orig_video_isVGA = 1;
- screen_info.orig_video_lines = 25;
- screen_info.orig_video_cols = 80;
- screen_info.orig_video_ega_bx = 3;
- screen_info.orig_video_points = 16;
-#endif
-
-#ifdef CONFIG_BLK_DEV_RAM
- rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK;
- rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0);
- rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0);
-#endif
- ARCH_SETUP
- if (efi_enabled)
- efi_init();
- else {
- printk(KERN_INFO "BIOS-provided physical RAM map:\n");
- print_memory_map(machine_specific_memory_setup());
- }
-
- copy_edd();
-
- if (!MOUNT_ROOT_RDONLY)
- root_mountflags &= ~MS_RDONLY;
- init_mm.start_code = (unsigned long) _text;
- init_mm.end_code = (unsigned long) _etext;
- init_mm.end_data = (unsigned long) _edata;
- init_mm.brk = (PFN_UP(__pa(xen_start_info.pt_base)) +
- xen_start_info.nr_pt_frames) << PAGE_SHIFT;
-
- /* XEN: This is nonsense: kernel may not even be contiguous in RAM. */
- /*code_resource.start = virt_to_phys(_text);*/
- /*code_resource.end = virt_to_phys(_etext)-1;*/
- /*data_resource.start = virt_to_phys(_etext);*/
- /*data_resource.end = virt_to_phys(_edata)-1;*/
-
- parse_cmdline_early(cmdline_p);
-
- max_low_pfn = setup_memory();
-
- /*
- * NOTE: before this point _nobody_ is allowed to allocate
- * any memory using the bootmem allocator. Although the
- * alloctor is now initialised only the first 8Mb of the kernel
- * virtual address space has been mapped. All allocations before
- * paging_init() has completed must use the alloc_bootmem_low_pages()
- * variant (which allocates DMA'able memory) and care must be taken
- * not to exceed the 8Mb limit.
- */
-
-#ifdef CONFIG_SMP
- smp_alloc_memory(); /* AP processor realmode stacks in low memory*/
-#endif
- paging_init();
-
-#ifdef CONFIG_X86_FIND_SMP_CONFIG
- /*
- * Find and reserve possible boot-time SMP configuration:
- */
- find_smp_config();
-#endif
-
- /* Make sure we have a correctly sized P->M table. */
- if (max_pfn != xen_start_info.nr_pages) {
- phys_to_machine_mapping = alloc_bootmem_low_pages(
- max_pfn * sizeof(unsigned long));
-
- if (max_pfn > xen_start_info.nr_pages) {
- /* set to INVALID_P2M_ENTRY */
- memset(phys_to_machine_mapping, ~0,
- max_pfn * sizeof(unsigned long));
- memcpy(phys_to_machine_mapping,
- (unsigned long *)xen_start_info.mfn_list,
- xen_start_info.nr_pages * sizeof(unsigned
long));
- } else {
- memcpy(phys_to_machine_mapping,
- (unsigned long *)xen_start_info.mfn_list,
- max_pfn * sizeof(unsigned long));
- if (HYPERVISOR_dom_mem_op(
- MEMOP_decrease_reservation,
- (unsigned long *)xen_start_info.mfn_list +
max_pfn,
- xen_start_info.nr_pages - max_pfn, 0) !=
- (xen_start_info.nr_pages - max_pfn)) BUG();
- }
- free_bootmem(
- __pa(xen_start_info.mfn_list),
- PFN_PHYS(PFN_UP(xen_start_info.nr_pages *
- sizeof(unsigned long))));
- }
-
- pfn_to_mfn_frame_list = alloc_bootmem_low_pages(PAGE_SIZE);
- for ( i=0, j=0; i < max_pfn; i+=(PAGE_SIZE/sizeof(unsigned long)), j++ )
- {
- pfn_to_mfn_frame_list[j] =
- virt_to_machine(&phys_to_machine_mapping[i]) >> PAGE_SHIFT;
- }
- HYPERVISOR_shared_info->arch.pfn_to_mfn_frame_list =
- virt_to_machine(pfn_to_mfn_frame_list) >> PAGE_SHIFT;
-
-
- /*
- * NOTE: at this point the bootmem allocator is fully available.
- */
-
-#ifdef CONFIG_EARLY_PRINTK
- {
- char *s = strstr(*cmdline_p, "earlyprintk=");
- if (s) {
- extern void setup_early_printk(char *);
-
- setup_early_printk(s);
- printk("early console enabled\n");
- }
- }
-#endif
-
-
- dmi_scan_machine();
-
-#ifdef CONFIG_X86_GENERICARCH
- generic_apic_probe(*cmdline_p);
-#endif
- if (efi_enabled)
- efi_map_memmap();
-
- op.cmd = PHYSDEVOP_SET_IOPL;
- op.u.set_iopl.iopl = current->thread.io_pl = 1;
- HYPERVISOR_physdev_op(&op);
-
-#ifdef CONFIG_ACPI_BOOT
- if (!(xen_start_info.flags & SIF_INITDOMAIN)) {
- printk(KERN_INFO "ACPI in unprivileged domain disabled\n");
- acpi_disabled = 1;
- acpi_ht = 0;
- }
-#endif
-
- /*
- * Parse the ACPI tables for possible boot-time SMP configuration.
- */
- acpi_boot_table_init();
- acpi_boot_init();
-
-#ifdef CONFIG_X86_LOCAL_APIC
- if (smp_found_config)
- get_smp_config();
-#endif
-
- /* XXX Disable irqdebug until we have a way to avoid interrupt
- * conflicts. */
- noirqdebug_setup("");
-
- register_memory();
-
- if (xen_start_info.flags & SIF_INITDOMAIN) {
- if (!(xen_start_info.flags & SIF_PRIVILEGED))
- panic("Xen granted us console access "
- "but not privileged status");
-
-#ifdef CONFIG_VT
-#if defined(CONFIG_VGA_CONSOLE)
- if (!efi_enabled ||
- (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY))
- conswitchp = &vga_con;
-#elif defined(CONFIG_DUMMY_CONSOLE)
- conswitchp = &dummy_con;
-#endif
-#endif
- } else {
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
- extern const struct consw xennull_con;
- extern int console_use_vt;
-#if defined(CONFIG_VGA_CONSOLE)
- /* disable VGA driver */
- ORIG_VIDEO_ISVGA = VIDEO_TYPE_VLFB;
-#endif
- conswitchp = &xennull_con;
- console_use_vt = 0;
-#endif
- }
-}
-
-static int
-xen_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
-{
- HYPERVISOR_crash();
- /* we're never actually going to get here... */
- return NOTIFY_DONE;
-}
-
-#include "setup_arch_post.h"
-/*
- * Local Variables:
- * mode:c
- * c-file-style:"k&r"
- * c-basic-offset:8
- * End:
- */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/signal.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/signal.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,656 +0,0 @@
-/*
- * linux/arch/i386/kernel/signal.c
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- *
- * 1997-11-28 Modified for POSIX.1b signals by Richard Henderson
- * 2000-06-20 Pentium III FXSR, SSE support by Gareth Hughes
- */
-
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/smp_lock.h>
-#include <linux/kernel.h>
-#include <linux/signal.h>
-#include <linux/errno.h>
-#include <linux/wait.h>
-#include <linux/unistd.h>
-#include <linux/stddef.h>
-#include <linux/personality.h>
-#include <linux/suspend.h>
-#include <linux/ptrace.h>
-#include <linux/elf.h>
-#include <asm/processor.h>
-#include <asm/ucontext.h>
-#include <asm/uaccess.h>
-#include <asm/i387.h>
-#include "sigframe.h"
-
-#define DEBUG_SIG 0
-
-#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
-
-/*
- * Atomically swap in the new signal mask, and wait for a signal.
- */
-asmlinkage int
-sys_sigsuspend(int history0, int history1, old_sigset_t mask)
-{
- struct pt_regs * regs = (struct pt_regs *) &history0;
- sigset_t saveset;
-
- mask &= _BLOCKABLE;
- spin_lock_irq(¤t->sighand->siglock);
- saveset = current->blocked;
- siginitset(¤t->blocked, mask);
- recalc_sigpending();
- spin_unlock_irq(¤t->sighand->siglock);
-
- regs->eax = -EINTR;
- while (1) {
- current->state = TASK_INTERRUPTIBLE;
- schedule();
- if (do_signal(regs, &saveset))
- return -EINTR;
- }
-}
-
-asmlinkage int
-sys_rt_sigsuspend(struct pt_regs regs)
-{
- sigset_t saveset, newset;
-
- /* XXX: Don't preclude handling different sized sigset_t's. */
- if (regs.ecx != sizeof(sigset_t))
- return -EINVAL;
-
- if (copy_from_user(&newset, (sigset_t __user *)regs.ebx,
sizeof(newset)))
- return -EFAULT;
- sigdelsetmask(&newset, ~_BLOCKABLE);
-
- spin_lock_irq(¤t->sighand->siglock);
- saveset = current->blocked;
- current->blocked = newset;
- recalc_sigpending();
- spin_unlock_irq(¤t->sighand->siglock);
-
- regs.eax = -EINTR;
- while (1) {
- current->state = TASK_INTERRUPTIBLE;
- schedule();
- if (do_signal(®s, &saveset))
- return -EINTR;
- }
-}
-
-asmlinkage int
-sys_sigaction(int sig, const struct old_sigaction __user *act,
- struct old_sigaction __user *oact)
-{
- struct k_sigaction new_ka, old_ka;
- int ret;
-
- if (act) {
- old_sigset_t mask;
- if (verify_area(VERIFY_READ, act, sizeof(*act)) ||
- __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
- __get_user(new_ka.sa.sa_restorer, &act->sa_restorer))
- return -EFAULT;
- __get_user(new_ka.sa.sa_flags, &act->sa_flags);
- __get_user(mask, &act->sa_mask);
- siginitset(&new_ka.sa.sa_mask, mask);
- }
-
- ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
-
- if (!ret && oact) {
- if (verify_area(VERIFY_WRITE, oact, sizeof(*oact)) ||
- __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
- __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer))
- return -EFAULT;
- __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
- __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
- }
-
- return ret;
-}
-
-asmlinkage int
-sys_sigaltstack(unsigned long ebx)
-{
- /* This is needed to make gcc realize it doesn't own the "struct
pt_regs" */
- struct pt_regs *regs = (struct pt_regs *)&ebx;
- const stack_t __user *uss = (const stack_t __user *)ebx;
- stack_t __user *uoss = (stack_t __user *)regs->ecx;
-
- return do_sigaltstack(uss, uoss, regs->esp);
-}
-
-
-/*
- * Do a signal return; undo the signal stack.
- */
-
-static int
-restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc, int
*peax)
-{
- unsigned int err = 0;
-
- /* Always make any pending restarted system calls return -EINTR */
- current_thread_info()->restart_block.fn = do_no_restart_syscall;
-
-#define COPY(x) err |= __get_user(regs->x, &sc->x)
-
-#define COPY_SEG(seg) \
- { unsigned short tmp; \
- err |= __get_user(tmp, &sc->seg); \
- regs->x##seg = tmp; }
-
-#define COPY_SEG_STRICT(seg) \
- { unsigned short tmp; \
- err |= __get_user(tmp, &sc->seg); \
- regs->x##seg = tmp|3; }
-
-#define GET_SEG(seg) \
- { unsigned short tmp; \
- err |= __get_user(tmp, &sc->seg); \
- loadsegment(seg,tmp); }
-
-#define FIX_EFLAGS (X86_EFLAGS_AC | X86_EFLAGS_OF | X86_EFLAGS_DF
| \
- X86_EFLAGS_TF | X86_EFLAGS_SF | X86_EFLAGS_ZF | \
- X86_EFLAGS_AF | X86_EFLAGS_PF | X86_EFLAGS_CF)
-
- GET_SEG(gs);
- GET_SEG(fs);
- COPY_SEG(es);
- COPY_SEG(ds);
- COPY(edi);
- COPY(esi);
- COPY(ebp);
- COPY(esp);
- COPY(ebx);
- COPY(edx);
- COPY(ecx);
- COPY(eip);
- COPY_SEG_STRICT(cs);
- COPY_SEG_STRICT(ss);
-
- {
- unsigned int tmpflags;
- err |= __get_user(tmpflags, &sc->eflags);
- regs->eflags = (regs->eflags & ~FIX_EFLAGS) | (tmpflags &
FIX_EFLAGS);
- regs->orig_eax = -1; /* disable syscall checks */
- }
-
- {
- struct _fpstate __user * buf;
- err |= __get_user(buf, &sc->fpstate);
- if (buf) {
- if (verify_area(VERIFY_READ, buf, sizeof(*buf)))
- goto badframe;
- err |= restore_i387(buf);
- } else {
- struct task_struct *me = current;
- if (used_math()) {
- clear_fpu(me);
- clear_used_math();
- }
- }
- }
-
- err |= __get_user(*peax, &sc->eax);
- return err;
-
-badframe:
- return 1;
-}
-
-asmlinkage int sys_sigreturn(unsigned long __unused)
-{
- struct pt_regs *regs = (struct pt_regs *) &__unused;
- struct sigframe __user *frame = (struct sigframe __user *)(regs->esp -
8);
- sigset_t set;
- int eax;
-
- if (verify_area(VERIFY_READ, frame, sizeof(*frame)))
- goto badframe;
- if (__get_user(set.sig[0], &frame->sc.oldmask)
- || (_NSIG_WORDS > 1
- && __copy_from_user(&set.sig[1], &frame->extramask,
- sizeof(frame->extramask))))
- goto badframe;
-
- sigdelsetmask(&set, ~_BLOCKABLE);
- spin_lock_irq(¤t->sighand->siglock);
- current->blocked = set;
- recalc_sigpending();
- spin_unlock_irq(¤t->sighand->siglock);
-
- if (restore_sigcontext(regs, &frame->sc, &eax))
- goto badframe;
- return eax;
-
-badframe:
- force_sig(SIGSEGV, current);
- return 0;
-}
-
-asmlinkage int sys_rt_sigreturn(unsigned long __unused)
-{
- struct pt_regs *regs = (struct pt_regs *) &__unused;
- struct rt_sigframe __user *frame = (struct rt_sigframe __user
*)(regs->esp - 4);
- sigset_t set;
- int eax;
-
- if (verify_area(VERIFY_READ, frame, sizeof(*frame)))
- goto badframe;
- if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
- goto badframe;
-
- sigdelsetmask(&set, ~_BLOCKABLE);
- spin_lock_irq(¤t->sighand->siglock);
- current->blocked = set;
- recalc_sigpending();
- spin_unlock_irq(¤t->sighand->siglock);
-
- if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &eax))
- goto badframe;
-
- if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->esp) == -EFAULT)
- goto badframe;
-
- return eax;
-
-badframe:
- force_sig(SIGSEGV, current);
- return 0;
-}
-
-/*
- * Set up a signal frame.
- */
-
-static int
-setup_sigcontext(struct sigcontext __user *sc, struct _fpstate __user *fpstate,
- struct pt_regs *regs, unsigned long mask)
-{
- int tmp, err = 0;
-
- tmp = 0;
- __asm__("movl %%gs,%0" : "=r"(tmp): "0"(tmp));
- err |= __put_user(tmp, (unsigned int __user *)&sc->gs);
- __asm__("movl %%fs,%0" : "=r"(tmp): "0"(tmp));
- err |= __put_user(tmp, (unsigned int __user *)&sc->fs);
-
- err |= __put_user(regs->xes, (unsigned int __user *)&sc->es);
- err |= __put_user(regs->xds, (unsigned int __user *)&sc->ds);
- err |= __put_user(regs->edi, &sc->edi);
- err |= __put_user(regs->esi, &sc->esi);
- err |= __put_user(regs->ebp, &sc->ebp);
- err |= __put_user(regs->esp, &sc->esp);
- err |= __put_user(regs->ebx, &sc->ebx);
- err |= __put_user(regs->edx, &sc->edx);
- err |= __put_user(regs->ecx, &sc->ecx);
- err |= __put_user(regs->eax, &sc->eax);
- err |= __put_user(current->thread.trap_no, &sc->trapno);
- err |= __put_user(current->thread.error_code, &sc->err);
- err |= __put_user(regs->eip, &sc->eip);
- err |= __put_user(regs->xcs, (unsigned int __user *)&sc->cs);
- err |= __put_user(regs->eflags, &sc->eflags);
- err |= __put_user(regs->esp, &sc->esp_at_signal);
- err |= __put_user(regs->xss, (unsigned int __user *)&sc->ss);
-
- tmp = save_i387(fpstate);
- if (tmp < 0)
- err = 1;
- else
- err |= __put_user(tmp ? fpstate : NULL, &sc->fpstate);
-
- /* non-iBCS2 extensions.. */
- err |= __put_user(mask, &sc->oldmask);
- err |= __put_user(current->thread.cr2, &sc->cr2);
-
- return err;
-}
-
-/*
- * Determine which stack to use..
- */
-static inline void __user *
-get_sigframe(struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size)
-{
- unsigned long esp;
-
- /* Default to using normal stack */
- esp = regs->esp;
-
- /* This is the X/Open sanctioned signal stack switching. */
- if (ka->sa.sa_flags & SA_ONSTACK) {
- if (sas_ss_flags(esp) == 0)
- esp = current->sas_ss_sp + current->sas_ss_size;
- }
-
- /* This is the legacy signal stack switching. */
- else if ((regs->xss & 0xffff) != __USER_DS &&
- !(ka->sa.sa_flags & SA_RESTORER) &&
- ka->sa.sa_restorer) {
- esp = (unsigned long) ka->sa.sa_restorer;
- }
-
- return (void __user *)((esp - frame_size) & -8ul);
-}
-
-/* These symbols are defined with the addresses in the vsyscall page.
- See vsyscall-sigreturn.S. */
-extern void __user __kernel_sigreturn;
-extern void __user __kernel_rt_sigreturn;
-
-static void setup_frame(int sig, struct k_sigaction *ka,
- sigset_t *set, struct pt_regs * regs)
-{
- void __user *restorer;
- struct sigframe __user *frame;
- int err = 0;
- int usig;
-
- frame = get_sigframe(ka, regs, sizeof(*frame));
-
- if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
- goto give_sigsegv;
-
- usig = current_thread_info()->exec_domain
- && current_thread_info()->exec_domain->signal_invmap
- && sig < 32
- ? current_thread_info()->exec_domain->signal_invmap[sig]
- : sig;
-
- err = __put_user(usig, &frame->sig);
- if (err)
- goto give_sigsegv;
-
- err = setup_sigcontext(&frame->sc, &frame->fpstate, regs, set->sig[0]);
- if (err)
- goto give_sigsegv;
-
- if (_NSIG_WORDS > 1) {
- err = __copy_to_user(&frame->extramask, &set->sig[1],
- sizeof(frame->extramask));
- if (err)
- goto give_sigsegv;
- }
-
- restorer = &__kernel_sigreturn;
- if (ka->sa.sa_flags & SA_RESTORER)
- restorer = ka->sa.sa_restorer;
-
- /* Set up to return from userspace. */
- err |= __put_user(restorer, &frame->pretcode);
-
- /*
- * This is popl %eax ; movl $,%eax ; int $0x80
- *
- * WE DO NOT USE IT ANY MORE! It's only left here for historical
- * reasons and because gdb uses it as a signature to notice
- * signal handler stack frames.
- */
- err |= __put_user(0xb858, (short __user *)(frame->retcode+0));
- err |= __put_user(__NR_sigreturn, (int __user *)(frame->retcode+2));
- err |= __put_user(0x80cd, (short __user *)(frame->retcode+6));
-
- if (err)
- goto give_sigsegv;
-
- /* Set up registers for signal handler */
- regs->esp = (unsigned long) frame;
- regs->eip = (unsigned long) ka->sa.sa_handler;
- regs->eax = (unsigned long) sig;
- regs->edx = (unsigned long) 0;
- regs->ecx = (unsigned long) 0;
-
- set_fs(USER_DS);
- regs->xds = __USER_DS;
- regs->xes = __USER_DS;
- regs->xss = __USER_DS;
- regs->xcs = __USER_CS;
-
- /*
- * Clear TF when entering the signal handler, but
- * notify any tracer that was single-stepping it.
- * The tracer may want to single-step inside the
- * handler too.
- */
- regs->eflags &= ~TF_MASK;
- if (test_thread_flag(TIF_SINGLESTEP))
- ptrace_notify(SIGTRAP);
-
-#if DEBUG_SIG
- printk("SIG deliver (%s:%d): sp=%p pc=%p ra=%p\n",
- current->comm, current->pid, frame, regs->eip, frame->pretcode);
-#endif
-
- return;
-
-give_sigsegv:
- force_sigsegv(sig, current);
-}
-
-static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
- sigset_t *set, struct pt_regs * regs)
-{
- void __user *restorer;
- struct rt_sigframe __user *frame;
- int err = 0;
- int usig;
-
- frame = get_sigframe(ka, regs, sizeof(*frame));
-
- if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
- goto give_sigsegv;
-
- usig = current_thread_info()->exec_domain
- && current_thread_info()->exec_domain->signal_invmap
- && sig < 32
- ? current_thread_info()->exec_domain->signal_invmap[sig]
- : sig;
-
- err |= __put_user(usig, &frame->sig);
- err |= __put_user(&frame->info, &frame->pinfo);
- err |= __put_user(&frame->uc, &frame->puc);
- err |= copy_siginfo_to_user(&frame->info, info);
- if (err)
- goto give_sigsegv;
-
- /* Create the ucontext. */
- err |= __put_user(0, &frame->uc.uc_flags);
- err |= __put_user(0, &frame->uc.uc_link);
- err |= __put_user(current->sas_ss_sp, &frame->uc.uc_stack.ss_sp);
- err |= __put_user(sas_ss_flags(regs->esp),
- &frame->uc.uc_stack.ss_flags);
- err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
- err |= setup_sigcontext(&frame->uc.uc_mcontext, &frame->fpstate,
- regs, set->sig[0]);
- err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
- if (err)
- goto give_sigsegv;
-
- /* Set up to return from userspace. */
- restorer = &__kernel_rt_sigreturn;
- if (ka->sa.sa_flags & SA_RESTORER)
- restorer = ka->sa.sa_restorer;
- err |= __put_user(restorer, &frame->pretcode);
-
- /*
- * This is movl $,%eax ; int $0x80
- *
- * WE DO NOT USE IT ANY MORE! It's only left here for historical
- * reasons and because gdb uses it as a signature to notice
- * signal handler stack frames.
- */
- err |= __put_user(0xb8, (char __user *)(frame->retcode+0));
- err |= __put_user(__NR_rt_sigreturn, (int __user *)(frame->retcode+1));
- err |= __put_user(0x80cd, (short __user *)(frame->retcode+5));
-
- if (err)
- goto give_sigsegv;
-
- /* Set up registers for signal handler */
- regs->esp = (unsigned long) frame;
- regs->eip = (unsigned long) ka->sa.sa_handler;
- regs->eax = (unsigned long) usig;
- regs->edx = (unsigned long) &frame->info;
- regs->ecx = (unsigned long) &frame->uc;
-
- set_fs(USER_DS);
- regs->xds = __USER_DS;
- regs->xes = __USER_DS;
- regs->xss = __USER_DS;
- regs->xcs = __USER_CS;
-
- /*
- * Clear TF when entering the signal handler, but
- * notify any tracer that was single-stepping it.
- * The tracer may want to single-step inside the
- * handler too.
- */
- regs->eflags &= ~TF_MASK;
- if (test_thread_flag(TIF_SINGLESTEP))
- ptrace_notify(SIGTRAP);
-
-#if DEBUG_SIG
- printk("SIG deliver (%s:%d): sp=%p pc=%p ra=%p\n",
- current->comm, current->pid, frame, regs->eip, frame->pretcode);
-#endif
-
- return;
-
-give_sigsegv:
- force_sigsegv(sig, current);
-}
-
-/*
- * OK, we're invoking a handler
- */
-
-static void
-handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
- sigset_t *oldset, struct pt_regs * regs)
-{
- /* Are we from a system call? */
- if (regs->orig_eax >= 0) {
- /* If so, check system call restarting.. */
- switch (regs->eax) {
- case -ERESTART_RESTARTBLOCK:
- case -ERESTARTNOHAND:
- regs->eax = -EINTR;
- break;
-
- case -ERESTARTSYS:
- if (!(ka->sa.sa_flags & SA_RESTART)) {
- regs->eax = -EINTR;
- break;
- }
- /* fallthrough */
- case -ERESTARTNOINTR:
- regs->eax = regs->orig_eax;
- regs->eip -= 2;
- }
- }
-
- /* Set up the stack frame */
- if (ka->sa.sa_flags & SA_SIGINFO)
- setup_rt_frame(sig, ka, info, oldset, regs);
- else
- setup_frame(sig, ka, oldset, regs);
-
- if (!(ka->sa.sa_flags & SA_NODEFER)) {
- spin_lock_irq(¤t->sighand->siglock);
- sigorsets(¤t->blocked,¤t->blocked,&ka->sa.sa_mask);
- sigaddset(¤t->blocked,sig);
- recalc_sigpending();
- spin_unlock_irq(¤t->sighand->siglock);
- }
-}
-
-/*
- * Note that 'init' is a special process: it doesn't get signals it doesn't
- * want to handle. Thus you cannot kill init even with a SIGKILL even by
- * mistake.
- */
-int fastcall do_signal(struct pt_regs *regs, sigset_t *oldset)
-{
- siginfo_t info;
- int signr;
- struct k_sigaction ka;
-
- /*
- * We want the common case to go fast, which
- * is why we may in certain cases get here from
- * kernel mode. Just return without doing anything
- * if so.
- */
- if ((regs->xcs & 2) != 2)
- return 1;
-
- if (current->flags & PF_FREEZE) {
- refrigerator(0);
- goto no_signal;
- }
-
- if (!oldset)
- oldset = ¤t->blocked;
-
- signr = get_signal_to_deliver(&info, &ka, regs, NULL);
- if (signr > 0) {
- /* Reenable any watchpoints before delivering the
- * signal to user space. The processor register will
- * have been cleared if the watchpoint triggered
- * inside the kernel.
- */
- if (unlikely(current->thread.debugreg[7])) {
- HYPERVISOR_set_debugreg(7,
- current->thread.debugreg[7]);
- }
-
- /* Whee! Actually deliver the signal. */
- handle_signal(signr, &info, &ka, oldset, regs);
- return 1;
- }
-
- no_signal:
- /* Did we come from a system call? */
- if (regs->orig_eax >= 0) {
- /* Restart the system call - no handlers present */
- if (regs->eax == -ERESTARTNOHAND ||
- regs->eax == -ERESTARTSYS ||
- regs->eax == -ERESTARTNOINTR) {
- regs->eax = regs->orig_eax;
- regs->eip -= 2;
- }
- if (regs->eax == -ERESTART_RESTARTBLOCK){
- regs->eax = __NR_restart_syscall;
- regs->eip -= 2;
- }
- }
- return 0;
-}
-
-/*
- * notification of userspace execution resumption
- * - triggered by current->work.notify_resume
- */
-__attribute__((regparm(3)))
-void do_notify_resume(struct pt_regs *regs, sigset_t *oldset,
- __u32 thread_info_flags)
-{
- /* Pending single-step? */
- if (thread_info_flags & _TIF_SINGLESTEP) {
- regs->eflags |= TF_MASK;
- clear_thread_flag(TIF_SINGLESTEP);
- }
- /* deal with pending signal delivery */
- if (thread_info_flags & _TIF_SIGPENDING)
- do_signal(regs,oldset);
-
- clear_thread_flag(TIF_IRET);
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/smp.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/smp.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,624 +0,0 @@
-/*
- * Intel SMP support routines.
- *
- * (c) 1995 Alan Cox, Building #3 <alan@xxxxxxxxxx>
- * (c) 1998-99, 2000 Ingo Molnar <mingo@xxxxxxxxxx>
- *
- * This code is released under the GNU General Public License version 2 or
- * later.
- */
-
-#include <linux/init.h>
-
-#include <linux/mm.h>
-#include <linux/irq.h>
-#include <linux/delay.h>
-#include <linux/spinlock.h>
-#include <linux/smp_lock.h>
-#include <linux/kernel_stat.h>
-#include <linux/mc146818rtc.h>
-#include <linux/cache.h>
-#include <linux/interrupt.h>
-#include <linux/cpu.h>
-
-#include <asm/mtrr.h>
-#include <asm/tlbflush.h>
-#if 0
-#include <mach_apic.h>
-#endif
-#include <asm-xen/evtchn.h>
-
-#define xxprint(msg) HYPERVISOR_console_io(CONSOLEIO_write, strlen(msg), msg)
-
-/*
- * Some notes on x86 processor bugs affecting SMP operation:
- *
- * Pentium, Pentium Pro, II, III (and all CPUs) have bugs.
- * The Linux implications for SMP are handled as follows:
- *
- * Pentium III / [Xeon]
- * None of the E1AP-E3AP errata are visible to the user.
- *
- * E1AP. see PII A1AP
- * E2AP. see PII A2AP
- * E3AP. see PII A3AP
- *
- * Pentium II / [Xeon]
- * None of the A1AP-A3AP errata are visible to the user.
- *
- * A1AP. see PPro 1AP
- * A2AP. see PPro 2AP
- * A3AP. see PPro 7AP
- *
- * Pentium Pro
- * None of 1AP-9AP errata are visible to the normal user,
- * except occasional delivery of 'spurious interrupt' as trap #15.
- * This is very rare and a non-problem.
- *
- * 1AP. Linux maps APIC as non-cacheable
- * 2AP. worked around in hardware
- * 3AP. fixed in C0 and above steppings microcode update.
- * Linux does not use excessive STARTUP_IPIs.
- * 4AP. worked around in hardware
- * 5AP. symmetric IO mode (normal Linux operation) not affected.
- * 'noapic' mode has vector 0xf filled out properly.
- * 6AP. 'noapic' mode might be affected - fixed in later steppings
- * 7AP. We do not assume writes to the LVT deassering IRQs
- * 8AP. We do not enable low power mode (deep sleep) during MP bootup
- * 9AP. We do not use mixed mode
- *
- * Pentium
- * There is a marginal case where REP MOVS on 100MHz SMP
- * machines with B stepping processors can fail. XXX should provide
- * an L1cache=Writethrough or L1cache=off option.
- *
- * B stepping CPUs may hang. There are hardware work arounds
- * for this. We warn about it in case your board doesn't have the work
- * arounds. Basically thats so I can tell anyone with a B stepping
- * CPU and SMP problems "tough".
- *
- * Specific items [From Pentium Processor Specification Update]
- *
- * 1AP. Linux doesn't use remote read
- * 2AP. Linux doesn't trust APIC errors
- * 3AP. We work around this
- * 4AP. Linux never generated 3 interrupts of the same priority
- * to cause a lost local interrupt.
- * 5AP. Remote read is never used
- * 6AP. not affected - worked around in hardware
- * 7AP. not affected - worked around in hardware
- * 8AP. worked around in hardware - we get explicit CS errors if not
- * 9AP. only 'noapic' mode affected. Might generate spurious
- * interrupts, we log only the first one and count the
- * rest silently.
- * 10AP. not affected - worked around in hardware
- * 11AP. Linux reads the APIC between writes to avoid this, as per
- * the documentation. Make sure you preserve this as it affects
- * the C stepping chips too.
- * 12AP. not affected - worked around in hardware
- * 13AP. not affected - worked around in hardware
- * 14AP. we always deassert INIT during bootup
- * 15AP. not affected - worked around in hardware
- * 16AP. not affected - worked around in hardware
- * 17AP. not affected - worked around in hardware
- * 18AP. not affected - worked around in hardware
- * 19AP. not affected - worked around in BIOS
- *
- * If this sounds worrying believe me these bugs are either ___RARE___,
- * or are signal timing bugs worked around in hardware and there's
- * about nothing of note with C stepping upwards.
- */
-
-DEFINE_PER_CPU(struct tlb_state, cpu_tlbstate) ____cacheline_aligned = {
&init_mm, 0, };
-
-/*
- * the following functions deal with sending IPIs between CPUs.
- *
- * We use 'broadcast', CPU->CPU IPIs and self-IPIs too.
- */
-
-static inline int __prepare_ICR (unsigned int shortcut, int vector)
-{
- return APIC_DM_FIXED | shortcut | vector | APIC_DEST_LOGICAL;
-}
-
-static inline int __prepare_ICR2 (unsigned int mask)
-{
- return SET_APIC_DEST_FIELD(mask);
-}
-
-DECLARE_PER_CPU(int, ipi_to_evtchn[NR_IPIS]);
-
-static inline void __send_IPI_one(unsigned int cpu, int vector)
-{
- unsigned int evtchn;
-
- evtchn = per_cpu(ipi_to_evtchn, cpu)[vector];
- // printk("send_IPI_mask_bitmask cpu %d vector %d evtchn %d\n", cpu,
vector, evtchn);
- if (evtchn) {
-#if 0
- shared_info_t *s = HYPERVISOR_shared_info;
- while (synch_test_bit(evtchn, &s->evtchn_pending[0]) ||
- synch_test_bit(evtchn, &s->evtchn_mask[0]))
- ;
-#endif
- notify_via_evtchn(evtchn);
- } else
- printk("send_IPI to unbound port %d/%d",
- cpu, vector);
-}
-
-void __send_IPI_shortcut(unsigned int shortcut, int vector)
-{
- int cpu;
-
- switch (shortcut) {
- case APIC_DEST_SELF:
- __send_IPI_one(smp_processor_id(), vector);
- break;
- case APIC_DEST_ALLBUT:
- for (cpu = 0; cpu < NR_CPUS; ++cpu) {
- if (cpu == smp_processor_id())
- continue;
- if (cpu_isset(cpu, cpu_online_map)) {
- __send_IPI_one(cpu, vector);
- }
- }
- break;
- default:
- printk("XXXXXX __send_IPI_shortcut %08x vector %d\n", shortcut,
- vector);
- break;
- }
-}
-
-void fastcall send_IPI_self(int vector)
-{
- __send_IPI_shortcut(APIC_DEST_SELF, vector);
-}
-
-/*
- * This is only used on smaller machines.
- */
-void send_IPI_mask_bitmask(cpumask_t mask, int vector)
-{
- unsigned long flags;
- unsigned int cpu;
-
- local_irq_save(flags);
- WARN_ON(cpus_addr(mask)[0] & ~cpus_addr(cpu_online_map)[0]);
-
- for (cpu = 0; cpu < NR_CPUS; ++cpu) {
- if (cpu_isset(cpu, mask)) {
- __send_IPI_one(cpu, vector);
- }
- }
-
- local_irq_restore(flags);
-}
-
-inline void send_IPI_mask_sequence(cpumask_t mask, int vector)
-{
-
- send_IPI_mask_bitmask(mask, vector);
-}
-
-#include <mach_ipi.h> /* must come after the send_IPI functions above for
inlining */
-
-#if 0 /* XEN */
-/*
- * Smarter SMP flushing macros.
- * c/o Linus Torvalds.
- *
- * These mean you can really definitely utterly forget about
- * writing to user space from interrupts. (Its not allowed anyway).
- *
- * Optimizations Manfred Spraul <manfred@xxxxxxxxxxxxxxxx>
- */
-
-static cpumask_t flush_cpumask;
-static struct mm_struct * flush_mm;
-static unsigned long flush_va;
-static DEFINE_SPINLOCK(tlbstate_lock);
-#define FLUSH_ALL 0xffffffff
-
-/*
- * We cannot call mmdrop() because we are in interrupt context,
- * instead update mm->cpu_vm_mask.
- *
- * We need to reload %cr3 since the page tables may be going
- * away from under us..
- */
-static inline void leave_mm (unsigned long cpu)
-{
- if (per_cpu(cpu_tlbstate, cpu).state == TLBSTATE_OK)
- BUG();
- cpu_clear(cpu, per_cpu(cpu_tlbstate, cpu).active_mm->cpu_vm_mask);
- load_cr3(swapper_pg_dir);
-}
-
-/*
- *
- * The flush IPI assumes that a thread switch happens in this order:
- * [cpu0: the cpu that switches]
- * 1) switch_mm() either 1a) or 1b)
- * 1a) thread switch to a different mm
- * 1a1) cpu_clear(cpu, old_mm->cpu_vm_mask);
- * Stop ipi delivery for the old mm. This is not synchronized with
- * the other cpus, but smp_invalidate_interrupt ignore flush ipis
- * for the wrong mm, and in the worst case we perform a superflous
- * tlb flush.
- * 1a2) set cpu_tlbstate to TLBSTATE_OK
- * Now the smp_invalidate_interrupt won't call leave_mm if cpu0
- * was in lazy tlb mode.
- * 1a3) update cpu_tlbstate[].active_mm
- * Now cpu0 accepts tlb flushes for the new mm.
- * 1a4) cpu_set(cpu, new_mm->cpu_vm_mask);
- * Now the other cpus will send tlb flush ipis.
- * 1a4) change cr3.
- * 1b) thread switch without mm change
- * cpu_tlbstate[].active_mm is correct, cpu0 already handles
- * flush ipis.
- * 1b1) set cpu_tlbstate to TLBSTATE_OK
- * 1b2) test_and_set the cpu bit in cpu_vm_mask.
- * Atomically set the bit [other cpus will start sending flush ipis],
- * and test the bit.
- * 1b3) if the bit was 0: leave_mm was called, flush the tlb.
- * 2) switch %%esp, ie current
- *
- * The interrupt must handle 2 special cases:
- * - cr3 is changed before %%esp, ie. it cannot use current->{active_,}mm.
- * - the cpu performs speculative tlb reads, i.e. even if the cpu only
- * runs in kernel space, the cpu could load tlb entries for user space
- * pages.
- *
- * The good news is that cpu_tlbstate is local to each cpu, no
- * write/read ordering problems.
- */
-
-/*
- * TLB flush IPI:
- *
- * 1) Flush the tlb entries if the cpu uses the mm that's being flushed.
- * 2) Leave the mm if we are in the lazy tlb mode.
- */
-
-irqreturn_t smp_invalidate_interrupt(int irq, void *dev_id,
- struct pt_regs *regs)
-{
- unsigned long cpu;
-
- cpu = get_cpu();
-
- if (!cpu_isset(cpu, flush_cpumask))
- goto out;
- /*
- * This was a BUG() but until someone can quote me the
- * line from the intel manual that guarantees an IPI to
- * multiple CPUs is retried _only_ on the erroring CPUs
- * its staying as a return
- *
- * BUG();
- */
-
- if (flush_mm == per_cpu(cpu_tlbstate, cpu).active_mm) {
- if (per_cpu(cpu_tlbstate, cpu).state == TLBSTATE_OK) {
- if (flush_va == FLUSH_ALL)
- local_flush_tlb();
- else
- __flush_tlb_one(flush_va);
- } else
- leave_mm(cpu);
- }
- smp_mb__before_clear_bit();
- cpu_clear(cpu, flush_cpumask);
- smp_mb__after_clear_bit();
-out:
- put_cpu_no_resched();
-
- return IRQ_HANDLED;
-}
-
-static void flush_tlb_others(cpumask_t cpumask, struct mm_struct *mm,
- unsigned long va)
-{
- /*
- * A couple of (to be removed) sanity checks:
- *
- * - current CPU must not be in mask
- * - mask must exist :)
- */
- BUG_ON(cpus_empty(cpumask));
- BUG_ON(cpu_isset(smp_processor_id(), cpumask));
- BUG_ON(!mm);
-
- /* If a CPU which we ran on has gone down, OK. */
- cpus_and(cpumask, cpumask, cpu_online_map);
- if (cpus_empty(cpumask))
- return;
-
- /*
- * i'm not happy about this global shared spinlock in the
- * MM hot path, but we'll see how contended it is.
- * Temporarily this turns IRQs off, so that lockups are
- * detected by the NMI watchdog.
- */
- spin_lock(&tlbstate_lock);
-
- flush_mm = mm;
- flush_va = va;
-#if NR_CPUS <= BITS_PER_LONG
- atomic_set_mask(cpumask, &flush_cpumask);
-#else
- {
- int k;
- unsigned long *flush_mask = (unsigned long *)&flush_cpumask;
- unsigned long *cpu_mask = (unsigned long *)&cpumask;
- for (k = 0; k < BITS_TO_LONGS(NR_CPUS); ++k)
- atomic_set_mask(cpu_mask[k], &flush_mask[k]);
- }
-#endif
- /*
- * We have to send the IPI only to
- * CPUs affected.
- */
- send_IPI_mask(cpumask, INVALIDATE_TLB_VECTOR);
-
- while (!cpus_empty(flush_cpumask))
- /* nothing. lockup detection does not belong here */
- mb();
-
- flush_mm = NULL;
- flush_va = 0;
- spin_unlock(&tlbstate_lock);
-}
-
-void flush_tlb_current_task(void)
-{
- struct mm_struct *mm = current->mm;
- cpumask_t cpu_mask;
-
- preempt_disable();
- cpu_mask = mm->cpu_vm_mask;
- cpu_clear(smp_processor_id(), cpu_mask);
-
- local_flush_tlb();
- if (!cpus_empty(cpu_mask))
- flush_tlb_others(cpu_mask, mm, FLUSH_ALL);
- preempt_enable();
-}
-
-void flush_tlb_mm (struct mm_struct * mm)
-{
- cpumask_t cpu_mask;
-
- preempt_disable();
- cpu_mask = mm->cpu_vm_mask;
- cpu_clear(smp_processor_id(), cpu_mask);
-
- if (current->active_mm == mm) {
- if (current->mm)
- local_flush_tlb();
- else
- leave_mm(smp_processor_id());
- }
- if (!cpus_empty(cpu_mask))
- flush_tlb_others(cpu_mask, mm, FLUSH_ALL);
-
- preempt_enable();
-}
-
-void flush_tlb_page(struct vm_area_struct * vma, unsigned long va)
-{
- struct mm_struct *mm = vma->vm_mm;
- cpumask_t cpu_mask;
-
- preempt_disable();
- cpu_mask = mm->cpu_vm_mask;
- cpu_clear(smp_processor_id(), cpu_mask);
-
- if (current->active_mm == mm) {
- if(current->mm)
- __flush_tlb_one(va);
- else
- leave_mm(smp_processor_id());
- }
-
- if (!cpus_empty(cpu_mask))
- flush_tlb_others(cpu_mask, mm, va);
-
- preempt_enable();
-}
-
-static void do_flush_tlb_all(void* info)
-{
- unsigned long cpu = smp_processor_id();
-
- __flush_tlb_all();
- if (per_cpu(cpu_tlbstate, cpu).state == TLBSTATE_LAZY)
- leave_mm(cpu);
-}
-
-void flush_tlb_all(void)
-{
- on_each_cpu(do_flush_tlb_all, NULL, 1, 1);
-}
-
-#else
-
-irqreturn_t smp_invalidate_interrupt(int irq, void *dev_id,
- struct pt_regs *regs)
-{ return 0; }
-void flush_tlb_current_task(void)
-{ xen_tlb_flush_mask(¤t->mm->cpu_vm_mask); }
-void flush_tlb_mm(struct mm_struct * mm)
-{ xen_tlb_flush_mask(&mm->cpu_vm_mask); }
-void flush_tlb_page(struct vm_area_struct *vma, unsigned long va)
-{ xen_invlpg_mask(&vma->vm_mm->cpu_vm_mask, va); }
-void flush_tlb_all(void)
-{ xen_tlb_flush_all(); }
-
-#endif /* XEN */
-
-/*
- * this function sends a 'reschedule' IPI to another CPU.
- * it goes straight through and wastes no time serializing
- * anything. Worst case is that we lose a reschedule ...
- */
-void smp_send_reschedule(int cpu)
-{
- WARN_ON(cpu_is_offline(cpu));
- send_IPI_mask(cpumask_of_cpu(cpu), RESCHEDULE_VECTOR);
-}
-
-/*
- * Structure and data for smp_call_function(). This is designed to minimise
- * static memory requirements. It also looks cleaner.
- */
-static DEFINE_SPINLOCK(call_lock);
-
-struct call_data_struct {
- void (*func) (void *info);
- void *info;
- atomic_t started;
- atomic_t finished;
- int wait;
-};
-
-static struct call_data_struct * call_data;
-
-/*
- * this function sends a 'generic call function' IPI to all other CPUs
- * in the system.
- */
-
-int smp_call_function (void (*func) (void *info), void *info, int nonatomic,
- int wait)
-/*
- * [SUMMARY] Run a function on all other CPUs.
- * <func> The function to run. This must be fast and non-blocking.
- * <info> An arbitrary pointer to pass to the function.
- * <nonatomic> currently unused.
- * <wait> If true, wait (atomically) until function has completed on other
CPUs.
- * [RETURNS] 0 on success, else a negative status code. Does not return until
- * remote CPUs are nearly ready to execute <<func>> or are or have executed.
- *
- * You must not call this function with disabled interrupts or from a
- * hardware interrupt handler or from a bottom half handler.
- */
-{
- struct call_data_struct data;
- int cpus;
-
- /* Holding any lock stops cpus from going down. */
- spin_lock(&call_lock);
- cpus = num_online_cpus()-1;
-
- if (!cpus) {
- spin_unlock(&call_lock);
- return 0;
- }
-
- /* Can deadlock when called with interrupts disabled */
- WARN_ON(irqs_disabled());
-
- data.func = func;
- data.info = info;
- atomic_set(&data.started, 0);
- data.wait = wait;
- if (wait)
- atomic_set(&data.finished, 0);
-
- call_data = &data;
- mb();
-
- /* Send a message to all other CPUs and wait for them to respond */
- send_IPI_allbutself(CALL_FUNCTION_VECTOR);
-
- /* Wait for response */
- while (atomic_read(&data.started) != cpus)
- barrier();
-
- if (wait)
- while (atomic_read(&data.finished) != cpus)
- barrier();
- spin_unlock(&call_lock);
-
- return 0;
-}
-
-static void stop_this_cpu (void * dummy)
-{
- /*
- * Remove this CPU:
- */
- cpu_clear(smp_processor_id(), cpu_online_map);
- local_irq_disable();
-#if 1
- xxprint("stop_this_cpu disable_local_APIC\n");
-#else
- disable_local_APIC();
-#endif
- if (cpu_data[smp_processor_id()].hlt_works_ok)
- for(;;) __asm__("hlt");
- for (;;);
-}
-
-/*
- * this function calls the 'stop' function on all other CPUs in the system.
- */
-
-void smp_send_stop(void)
-{
- smp_call_function(stop_this_cpu, NULL, 1, 0);
-
- local_irq_disable();
-#if 1
- xxprint("smp_send_stop disable_local_APIC\n");
-#else
- disable_local_APIC();
-#endif
- local_irq_enable();
-}
-
-/*
- * Reschedule call back. Nothing to do,
- * all the work is done automatically when
- * we return from the interrupt.
- */
-irqreturn_t smp_reschedule_interrupt(int irq, void *dev_id,
- struct pt_regs *regs)
-{
-
- return IRQ_HANDLED;
-}
-
-#include <linux/kallsyms.h>
-irqreturn_t smp_call_function_interrupt(int irq, void *dev_id,
- struct pt_regs *regs)
-{
- void (*func) (void *info) = call_data->func;
- void *info = call_data->info;
- int wait = call_data->wait;
-
- /*
- * Notify initiating CPU that I've grabbed the data and am
- * about to execute the function
- */
- mb();
- atomic_inc(&call_data->started);
- /*
- * At this point the info structure may be out of scope unless wait==1
- */
- irq_enter();
- (*func)(info);
- irq_exit();
-
- if (wait) {
- mb();
- atomic_inc(&call_data->finished);
- }
-
- return IRQ_HANDLED;
-}
-
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/time.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/time.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,801 +0,0 @@
-/*
- * linux/arch/i386/kernel/time.c
- *
- * Copyright (C) 1991, 1992, 1995 Linus Torvalds
- *
- * This file contains the PC-specific time handling details:
- * reading the RTC at bootup, etc..
- * 1994-07-02 Alan Modra
- * fixed set_rtc_mmss, fixed time.year for >= 2000, new mktime
- * 1995-03-26 Markus Kuhn
- * fixed 500 ms bug at call to set_rtc_mmss, fixed DS12887
- * precision CMOS clock update
- * 1996-05-03 Ingo Molnar
- * fixed time warps in do_[slow|fast]_gettimeoffset()
- * 1997-09-10 Updated NTP code according to technical memorandum Jan '96
- * "A Kernel Model for Precision Timekeeping" by Dave Mills
- * 1998-09-05 (Various)
- * More robust do_fast_gettimeoffset() algorithm implemented
- * (works with APM, Cyrix 6x86MX and Centaur C6),
- * monotonic gettimeofday() with fast_get_timeoffset(),
- * drift-proof precision TSC calibration on boot
- * (C. Scott Ananian <cananian@xxxxxxxxxxxxxxxxxxxx>, Andrew D.
- * Balsa <andrebalsa@xxxxxxxxxx>, Philip Gladstone <philip@xxxxxxxxxx>;
- * ported from 2.0.35 Jumbo-9 by Michael Krause <m.krause@xxxxxxxxxxxxx>).
- * 1998-12-16 Andrea Arcangeli
- * Fixed Jumbo-9 code in 2.1.131: do_gettimeofday was missing 1 jiffy
- * because was not accounting lost_ticks.
- * 1998-12-24 Copyright (C) 1998 Andrea Arcangeli
- * Fixed a xtime SMP race (we need the xtime_lock rw spinlock to
- * serialize accesses to xtime/lost_ticks).
- */
-
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/param.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/interrupt.h>
-#include <linux/time.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/smp.h>
-#include <linux/module.h>
-#include <linux/sysdev.h>
-#include <linux/bcd.h>
-#include <linux/efi.h>
-#include <linux/mca.h>
-#include <linux/sysctl.h>
-#include <linux/percpu.h>
-
-#include <asm/io.h>
-#include <asm/smp.h>
-#include <asm/irq.h>
-#include <asm/msr.h>
-#include <asm/delay.h>
-#include <asm/mpspec.h>
-#include <asm/uaccess.h>
-#include <asm/processor.h>
-#include <asm/timer.h>
-
-#include "mach_time.h"
-
-#include <linux/timex.h>
-#include <linux/config.h>
-
-#include <asm/hpet.h>
-
-#include <asm/arch_hooks.h>
-
-#include "io_ports.h"
-
-extern spinlock_t i8259A_lock;
-int pit_latch_buggy; /* extern */
-
-u64 jiffies_64 = INITIAL_JIFFIES;
-
-EXPORT_SYMBOL(jiffies_64);
-
-#if defined(__x86_64__)
-unsigned long vxtime_hz = PIT_TICK_RATE;
-struct vxtime_data __vxtime __section_vxtime; /* for vsyscalls */
-volatile unsigned long __jiffies __section_jiffies = INITIAL_JIFFIES;
-unsigned long __wall_jiffies __section_wall_jiffies = INITIAL_JIFFIES;
-struct timespec __xtime __section_xtime;
-struct timezone __sys_tz __section_sys_tz;
-#endif
-
-#if defined(__x86_64__)
-unsigned int cpu_khz; /* Detected as we calibrate the TSC */
-#else
-unsigned long cpu_khz; /* Detected as we calibrate the TSC */
-#endif
-
-extern unsigned long wall_jiffies;
-
-DEFINE_SPINLOCK(rtc_lock);
-
-DEFINE_SPINLOCK(i8253_lock);
-EXPORT_SYMBOL(i8253_lock);
-
-extern struct init_timer_opts timer_tsc_init;
-extern struct timer_opts timer_tsc;
-struct timer_opts *cur_timer = &timer_tsc;
-
-/* These are peridically updated in shared_info, and then copied here. */
-u32 shadow_tsc_stamp;
-u64 shadow_system_time;
-static u32 shadow_time_version;
-static struct timeval shadow_tv;
-
-/*
- * We use this to ensure that gettimeofday() is monotonically increasing. We
- * only break this guarantee if the wall clock jumps backwards "a long way".
- */
-static struct timeval last_seen_tv = {0,0};
-
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
-/* Periodically propagate synchronised time base to the RTC and to Xen. */
-static long last_rtc_update, last_update_to_xen;
-#endif
-
-/* Periodically take synchronised time base from Xen, if we need it. */
-static long last_update_from_xen; /* UTC seconds when last read Xen clock. */
-
-/* Keep track of last time we did processing/updating of jiffies and xtime. */
-static u64 processed_system_time; /* System time (ns) at last processing. */
-static DEFINE_PER_CPU(u64, processed_system_time);
-
-#define NS_PER_TICK (1000000000ULL/HZ)
-
-#define HANDLE_USEC_UNDERFLOW(_tv) do { \
- while ((_tv).tv_usec < 0) { \
- (_tv).tv_usec += USEC_PER_SEC; \
- (_tv).tv_sec--; \
- } \
-} while (0)
-#define HANDLE_USEC_OVERFLOW(_tv) do { \
- while ((_tv).tv_usec >= USEC_PER_SEC) { \
- (_tv).tv_usec -= USEC_PER_SEC; \
- (_tv).tv_sec++; \
- } \
-} while (0)
-static inline void __normalize_time(time_t *sec, s64 *nsec)
-{
- while (*nsec >= NSEC_PER_SEC) {
- (*nsec) -= NSEC_PER_SEC;
- (*sec)++;
- }
- while (*nsec < 0) {
- (*nsec) += NSEC_PER_SEC;
- (*sec)--;
- }
-}
-
-/* Does this guest OS track Xen time, or set its wall clock independently? */
-static int independent_wallclock = 0;
-static int __init __independent_wallclock(char *str)
-{
- independent_wallclock = 1;
- return 1;
-}
-__setup("independent_wallclock", __independent_wallclock);
-#define INDEPENDENT_WALLCLOCK() \
- (independent_wallclock || (xen_start_info.flags & SIF_INITDOMAIN))
-
-/*
- * Reads a consistent set of time-base values from Xen, into a shadow data
- * area. Must be called with the xtime_lock held for writing.
- */
-static void __get_time_values_from_xen(void)
-{
- shared_info_t *s = HYPERVISOR_shared_info;
-
- do {
- shadow_time_version = s->time_version2;
- rmb();
- shadow_tv.tv_sec = s->wc_sec;
- shadow_tv.tv_usec = s->wc_usec;
- shadow_tsc_stamp = (u32)s->tsc_timestamp;
- shadow_system_time = s->system_time;
- rmb();
- }
- while (shadow_time_version != s->time_version1);
-
- cur_timer->mark_offset();
-}
-
-#define TIME_VALUES_UP_TO_DATE \
- ({ rmb(); (shadow_time_version == HYPERVISOR_shared_info->time_version2); })
-
-/*
- * This version of gettimeofday has microsecond resolution
- * and better than microsecond precision on fast x86 machines with TSC.
- */
-void do_gettimeofday(struct timeval *tv)
-{
- unsigned long seq;
- unsigned long usec, sec;
- unsigned long max_ntp_tick;
- unsigned long flags;
- s64 nsec;
-
- do {
- unsigned long lost;
-
- seq = read_seqbegin(&xtime_lock);
-
- usec = cur_timer->get_offset();
- lost = jiffies - wall_jiffies;
-
- /*
- * If time_adjust is negative then NTP is slowing the clock
- * so make sure not to go into next possible interval.
- * Better to lose some accuracy than have time go backwards..
- */
- if (unlikely(time_adjust < 0)) {
- max_ntp_tick = (USEC_PER_SEC / HZ) - tickadj;
- usec = min(usec, max_ntp_tick);
-
- if (lost)
- usec += lost * max_ntp_tick;
- }
- else if (unlikely(lost))
- usec += lost * (USEC_PER_SEC / HZ);
-
- sec = xtime.tv_sec;
- usec += (xtime.tv_nsec / NSEC_PER_USEC);
-
- nsec = shadow_system_time - processed_system_time;
- __normalize_time(&sec, &nsec);
- usec += (long)nsec / NSEC_PER_USEC;
-
- if (unlikely(!TIME_VALUES_UP_TO_DATE)) {
- /*
- * We may have blocked for a long time,
- * rendering our calculations invalid
- * (e.g. the time delta may have
- * overflowed). Detect that and recalculate
- * with fresh values.
- */
- write_seqlock_irqsave(&xtime_lock, flags);
- __get_time_values_from_xen();
- write_sequnlock_irqrestore(&xtime_lock, flags);
- continue;
- }
- } while (read_seqretry(&xtime_lock, seq));
-
- while (usec >= USEC_PER_SEC) {
- usec -= USEC_PER_SEC;
- sec++;
- }
-
- /* Ensure that time-of-day is monotonically increasing. */
- if ((sec < last_seen_tv.tv_sec) ||
- ((sec == last_seen_tv.tv_sec) && (usec < last_seen_tv.tv_usec))) {
- sec = last_seen_tv.tv_sec;
- usec = last_seen_tv.tv_usec;
- } else {
- last_seen_tv.tv_sec = sec;
- last_seen_tv.tv_usec = usec;
- }
-
- tv->tv_sec = sec;
- tv->tv_usec = usec;
-}
-
-EXPORT_SYMBOL(do_gettimeofday);
-
-int do_settimeofday(struct timespec *tv)
-{
- time_t wtm_sec, sec = tv->tv_sec;
- long wtm_nsec;
- s64 nsec;
- struct timespec xentime;
-
- if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC)
- return -EINVAL;
-
- if (!INDEPENDENT_WALLCLOCK())
- return 0; /* Silent failure? */
-
- write_seqlock_irq(&xtime_lock);
-
- /*
- * Ensure we don't get blocked for a long time so that our time delta
- * overflows. If that were to happen then our shadow time values would
- * be stale, so we can retry with fresh ones.
- */
- again:
- nsec = (s64)tv->tv_nsec -
- ((s64)cur_timer->get_offset() * (s64)NSEC_PER_USEC);
- if (unlikely(!TIME_VALUES_UP_TO_DATE)) {
- __get_time_values_from_xen();
- goto again;
- }
-
- __normalize_time(&sec, &nsec);
- set_normalized_timespec(&xentime, sec, nsec);
-
- /*
- * This is revolting. We need to set "xtime" correctly. However, the
- * value in this location is the value at the most recent update of
- * wall time. Discover what correction gettimeofday() would have
- * made, and then undo it!
- */
- nsec -= (jiffies - wall_jiffies) * TICK_NSEC;
-
- nsec -= (shadow_system_time - processed_system_time);
-
- __normalize_time(&sec, &nsec);
- wtm_sec = wall_to_monotonic.tv_sec + (xtime.tv_sec - sec);
- wtm_nsec = wall_to_monotonic.tv_nsec + (xtime.tv_nsec - nsec);
-
- set_normalized_timespec(&xtime, sec, nsec);
- set_normalized_timespec(&wall_to_monotonic, wtm_sec, wtm_nsec);
-
- time_adjust = 0; /* stop active adjtime() */
- time_status |= STA_UNSYNC;
- time_maxerror = NTP_PHASE_LIMIT;
- time_esterror = NTP_PHASE_LIMIT;
-
- /* Reset all our running time counts. They make no sense now. */
- last_seen_tv.tv_sec = 0;
- last_update_from_xen = 0;
-
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
- if (xen_start_info.flags & SIF_INITDOMAIN) {
- dom0_op_t op;
- last_rtc_update = last_update_to_xen = 0;
- op.cmd = DOM0_SETTIME;
- op.u.settime.secs = xentime.tv_sec;
- op.u.settime.usecs = xentime.tv_nsec / NSEC_PER_USEC;
- op.u.settime.system_time = shadow_system_time;
- write_sequnlock_irq(&xtime_lock);
- HYPERVISOR_dom0_op(&op);
- } else
-#endif
- write_sequnlock_irq(&xtime_lock);
-
- clock_was_set();
- return 0;
-}
-
-EXPORT_SYMBOL(do_settimeofday);
-
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
-static int set_rtc_mmss(unsigned long nowtime)
-{
- int retval;
-
- /* gets recalled with irq locally disabled */
- spin_lock(&rtc_lock);
- if (efi_enabled)
- retval = efi_set_rtc_mmss(nowtime);
- else
- retval = mach_set_rtc_mmss(nowtime);
- spin_unlock(&rtc_lock);
-
- return retval;
-}
-#endif
-
-/* monotonic_clock(): returns # of nanoseconds passed since time_init()
- * Note: This function is required to return accurate
- * time even in the absence of multiple timer ticks.
- */
-unsigned long long monotonic_clock(void)
-{
- return cur_timer->monotonic_clock();
-}
-EXPORT_SYMBOL(monotonic_clock);
-
-#if defined(CONFIG_SMP) && defined(CONFIG_FRAME_POINTER)
-unsigned long profile_pc(struct pt_regs *regs)
-{
- unsigned long pc = instruction_pointer(regs);
-
- if (in_lock_functions(pc))
- return *(unsigned long *)(regs->ebp + 4);
-
- return pc;
-}
-EXPORT_SYMBOL(profile_pc);
-#endif
-
-/*
- * timer_interrupt() needs to keep up the real-time clock,
- * as well as call the "do_timer()" routine every clocktick
- */
-static inline void do_timer_interrupt(int irq, void *dev_id,
- struct pt_regs *regs)
-{
- time_t wtm_sec, sec;
- s64 delta, delta_cpu, nsec;
- long sec_diff, wtm_nsec;
- int cpu = smp_processor_id();
-
- do {
- __get_time_values_from_xen();
-
- delta = delta_cpu = (s64)shadow_system_time +
- ((s64)cur_timer->get_offset() * (s64)NSEC_PER_USEC);
- delta -= processed_system_time;
- delta_cpu -= per_cpu(processed_system_time, cpu);
- }
- while (!TIME_VALUES_UP_TO_DATE);
-
- if (unlikely(delta < 0) || unlikely(delta_cpu < 0)) {
- printk("Timer ISR/%d: Time went backwards: "
- "delta=%lld cpu_delta=%lld shadow=%lld "
- "off=%lld processed=%lld cpu_processed=%lld\n",
- cpu, delta, delta_cpu, shadow_system_time,
- ((s64)cur_timer->get_offset() * (s64)NSEC_PER_USEC),
- processed_system_time,
- per_cpu(processed_system_time, cpu));
- for (cpu = 0; cpu < num_online_cpus(); cpu++)
- printk(" %d: %lld\n", cpu,
- per_cpu(processed_system_time, cpu));
- return;
- }
-
- /* System-wide jiffy work. */
- while (delta >= NS_PER_TICK) {
- delta -= NS_PER_TICK;
- processed_system_time += NS_PER_TICK;
- do_timer(regs);
- }
-
- /* Local CPU jiffy work. */
- while (delta_cpu >= NS_PER_TICK) {
- delta_cpu -= NS_PER_TICK;
- per_cpu(processed_system_time, cpu) += NS_PER_TICK;
- update_process_times(user_mode(regs));
- profile_tick(CPU_PROFILING, regs);
- }
-
- if (cpu != 0)
- return;
-
- /*
- * Take synchronised time from Xen once a minute if we're not
- * synchronised ourselves, and we haven't chosen to keep an independent
- * time base.
- */
- if (!INDEPENDENT_WALLCLOCK() &&
- ((time_status & STA_UNSYNC) != 0) &&
- (xtime.tv_sec > (last_update_from_xen + 60))) {
- /* Adjust shadow for jiffies that haven't updated xtime yet. */
- shadow_tv.tv_usec -=
- (jiffies - wall_jiffies) * (USEC_PER_SEC / HZ);
- HANDLE_USEC_UNDERFLOW(shadow_tv);
-
- /*
- * Reset our running time counts if they are invalidated by
- * a warp backwards of more than 500ms.
- */
- sec_diff = xtime.tv_sec - shadow_tv.tv_sec;
- if (unlikely(abs(sec_diff) > 1) ||
- unlikely(((sec_diff * USEC_PER_SEC) +
- (xtime.tv_nsec / NSEC_PER_USEC) -
- shadow_tv.tv_usec) > 500000)) {
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
- last_rtc_update = last_update_to_xen = 0;
-#endif
- last_seen_tv.tv_sec = 0;
- }
-
- /* Update our unsynchronised xtime appropriately. */
- sec = shadow_tv.tv_sec;
- nsec = shadow_tv.tv_usec * NSEC_PER_USEC;
-
- __normalize_time(&sec, &nsec);
- wtm_sec = wall_to_monotonic.tv_sec + (xtime.tv_sec - sec);
- wtm_nsec = wall_to_monotonic.tv_nsec + (xtime.tv_nsec - nsec);
-
- set_normalized_timespec(&xtime, sec, nsec);
- set_normalized_timespec(&wall_to_monotonic, wtm_sec, wtm_nsec);
-
- last_update_from_xen = sec;
- }
-
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
- if (!(xen_start_info.flags & SIF_INITDOMAIN))
- return;
-
- /* Send synchronised time to Xen approximately every minute. */
- if (((time_status & STA_UNSYNC) == 0) &&
- (xtime.tv_sec > (last_update_to_xen + 60))) {
- dom0_op_t op;
- struct timeval tv;
-
- tv.tv_sec = xtime.tv_sec;
- tv.tv_usec = xtime.tv_nsec / NSEC_PER_USEC;
- tv.tv_usec += (jiffies - wall_jiffies) * (USEC_PER_SEC/HZ);
- HANDLE_USEC_OVERFLOW(tv);
-
- op.cmd = DOM0_SETTIME;
- op.u.settime.secs = tv.tv_sec;
- op.u.settime.usecs = tv.tv_usec;
- op.u.settime.system_time = shadow_system_time;
- HYPERVISOR_dom0_op(&op);
-
- last_update_to_xen = xtime.tv_sec;
- }
-
- /*
- * If we have an externally synchronized Linux clock, then update
- * CMOS clock accordingly every ~11 minutes. Set_rtc_mmss() has to be
- * called as close as possible to 500 ms before the new second starts.
- */
- if ((time_status & STA_UNSYNC) == 0 &&
- xtime.tv_sec > last_rtc_update + 660 &&
- (xtime.tv_nsec / 1000)
- >= USEC_AFTER - ((unsigned) TICK_SIZE) / 2 &&
- (xtime.tv_nsec / 1000)
- <= USEC_BEFORE + ((unsigned) TICK_SIZE) / 2) {
- /* horrible...FIXME */
- if (efi_enabled) {
- if (efi_set_rtc_mmss(xtime.tv_sec) == 0)
- last_rtc_update = xtime.tv_sec;
- else
- last_rtc_update = xtime.tv_sec - 600;
- } else if (set_rtc_mmss(xtime.tv_sec) == 0)
- last_rtc_update = xtime.tv_sec;
- else
- last_rtc_update = xtime.tv_sec - 600; /* do it again in
60 s */
- }
-#endif
-}
-
-/*
- * This is the same as the above, except we _also_ save the current
- * Time Stamp Counter value at the time of the timer interrupt, so that
- * we later on can estimate the time of day more exactly.
- */
-irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
- /*
- * Here we are in the timer irq handler. We just have irqs locally
- * disabled but we don't know if the timer_bh is running on the other
- * CPU. We need to avoid to SMP race with it. NOTE: we don' t need
- * the irq version of write_lock because as just said we have irq
- * locally disabled. -arca
- */
- write_seqlock(&xtime_lock);
- do_timer_interrupt(irq, NULL, regs);
- write_sequnlock(&xtime_lock);
- return IRQ_HANDLED;
-}
-
-/* not static: needed by APM */
-unsigned long get_cmos_time(void)
-{
- unsigned long retval;
-
- spin_lock(&rtc_lock);
-
- if (efi_enabled)
- retval = efi_get_time();
- else
- retval = mach_get_cmos_time();
-
- spin_unlock(&rtc_lock);
-
- return retval;
-}
-
-static long clock_cmos_diff, sleep_start;
-
-static int timer_suspend(struct sys_device *dev, u32 state)
-{
- /*
- * Estimate time zone so that set_time can update the clock
- */
- clock_cmos_diff = -get_cmos_time();
- clock_cmos_diff += get_seconds();
- sleep_start = get_cmos_time();
- return 0;
-}
-
-static int timer_resume(struct sys_device *dev)
-{
- unsigned long flags;
- unsigned long sec;
- unsigned long sleep_length;
-
-#ifdef CONFIG_HPET_TIMER
- if (is_hpet_enabled())
- hpet_reenable();
-#endif
- sec = get_cmos_time() + clock_cmos_diff;
- sleep_length = (get_cmos_time() - sleep_start) * HZ;
- write_seqlock_irqsave(&xtime_lock, flags);
- xtime.tv_sec = sec;
- xtime.tv_nsec = 0;
- write_sequnlock_irqrestore(&xtime_lock, flags);
- jiffies += sleep_length;
- wall_jiffies += sleep_length;
- return 0;
-}
-
-static struct sysdev_class timer_sysclass = {
- .resume = timer_resume,
- .suspend = timer_suspend,
- set_kset_name("timer"),
-};
-
-
-/* XXX this driverfs stuff should probably go elsewhere later -john */
-static struct sys_device device_timer = {
- .id = 0,
- .cls = &timer_sysclass,
-};
-
-static int time_init_device(void)
-{
- int error = sysdev_class_register(&timer_sysclass);
- if (!error)
- error = sysdev_register(&device_timer);
- return error;
-}
-
-device_initcall(time_init_device);
-
-#ifdef CONFIG_HPET_TIMER
-extern void (*late_time_init)(void);
-/* Duplicate of time_init() below, with hpet_enable part added */
-void __init hpet_time_init(void)
-{
- xtime.tv_sec = get_cmos_time();
- xtime.tv_nsec = (INITIAL_JIFFIES % HZ) * (NSEC_PER_SEC / HZ);
- set_normalized_timespec(&wall_to_monotonic,
- -xtime.tv_sec, -xtime.tv_nsec);
-
- if (hpet_enable() >= 0) {
- printk("Using HPET for base-timer\n");
- }
-
- cur_timer = select_timer();
- printk(KERN_INFO "Using %s for high-res timesource\n",cur_timer->name);
-
- time_init_hook();
-}
-#endif
-
-/* Dynamically-mapped IRQ. */
-static DEFINE_PER_CPU(int, timer_irq);
-
-static struct irqaction irq_timer = {
- timer_interrupt, SA_INTERRUPT, CPU_MASK_NONE, "timer0",
- NULL, NULL
-};
-
-void __init time_init(void)
-{
-#ifdef CONFIG_HPET_TIMER
- if (is_hpet_capable()) {
- /*
- * HPET initialization needs to do memory-mapped io. So, let
- * us do a late initialization after mem_init().
- */
- late_time_init = hpet_time_init;
- return;
- }
-#endif
- __get_time_values_from_xen();
- xtime.tv_sec = shadow_tv.tv_sec;
- xtime.tv_nsec = shadow_tv.tv_usec * NSEC_PER_USEC;
- set_normalized_timespec(&wall_to_monotonic,
- -xtime.tv_sec, -xtime.tv_nsec);
- processed_system_time = shadow_system_time;
- per_cpu(processed_system_time, 0) = processed_system_time;
-
- if (timer_tsc_init.init(NULL) != 0)
- BUG();
- printk(KERN_INFO "Using %s for high-res timesource\n",cur_timer->name);
-
-#if defined(__x86_64__)
- vxtime.mode = VXTIME_TSC;
- vxtime.quot = (1000000L << 32) / vxtime_hz;
- vxtime.tsc_quot = (1000L << 32) / cpu_khz;
- vxtime.hz = vxtime_hz;
- sync_core();
- rdtscll(vxtime.last_tsc);
-#endif
-
- per_cpu(timer_irq, 0) = bind_virq_to_irq(VIRQ_TIMER);
- (void)setup_irq(per_cpu(timer_irq, 0), &irq_timer);
-}
-
-/* Convert jiffies to system time. */
-static inline u64 jiffies_to_st(unsigned long j)
-{
- unsigned long seq;
- long delta;
- u64 st;
-
- do {
- seq = read_seqbegin(&xtime_lock);
- delta = j - jiffies;
- /* NB. The next check can trigger in some wrap-around cases,
- * but that's ok: we'll just end up with a shorter timeout. */
- if (delta < 1)
- delta = 1;
- st = processed_system_time + (delta * NS_PER_TICK);
- } while (read_seqretry(&xtime_lock, seq));
-
- return st;
-}
-
-/*
- * stop_hz_timer / start_hz_timer - enter/exit 'tickless mode' on an idle cpu
- * These functions are based on implementations from arch/s390/kernel/time.c
- */
-void stop_hz_timer(void)
-{
- unsigned int cpu = smp_processor_id();
- unsigned long j;
-
- /* s390 does this /before/ checking rcu_pending(). We copy them. */
- cpu_set(cpu, nohz_cpu_mask);
-
- /* Leave ourselves in 'tick mode' if rcu or softirq pending. */
- if (rcu_pending(cpu) || local_softirq_pending()) {
- cpu_clear(cpu, nohz_cpu_mask);
- j = jiffies + 1;
- } else {
- j = next_timer_interrupt();
- }
-
- BUG_ON(HYPERVISOR_set_timer_op(jiffies_to_st(j)) != 0);
-}
-
-void start_hz_timer(void)
-{
- cpu_clear(smp_processor_id(), nohz_cpu_mask);
-}
-
-void time_suspend(void)
-{
- /* nothing */
-}
-
-/* No locking required. We are only CPU running, and interrupts are off. */
-void time_resume(void)
-{
- if (timer_tsc_init.init(NULL) != 0)
- BUG();
-
- /* Get timebases for new environment. */
- __get_time_values_from_xen();
-
- /* Reset our own concept of passage of system time. */
- processed_system_time = shadow_system_time;
- per_cpu(processed_system_time, 0) = processed_system_time;
-
- /* Accept a warp in UTC (wall-clock) time. */
- last_seen_tv.tv_sec = 0;
-
- /* Make sure we resync UTC time with Xen on next timer interrupt. */
- last_update_from_xen = 0;
-}
-
-#ifdef CONFIG_SMP
-static char timer_name[NR_CPUS][15];
-void local_setup_timer(void)
-{
- int seq, cpu = smp_processor_id();
-
- do {
- seq = read_seqbegin(&xtime_lock);
- per_cpu(processed_system_time, cpu) = shadow_system_time;
- } while (read_seqretry(&xtime_lock, seq));
-
- per_cpu(timer_irq, cpu) = bind_virq_to_irq(VIRQ_TIMER);
- sprintf(timer_name[cpu], "timer%d", cpu);
- BUG_ON(request_irq(per_cpu(timer_irq, cpu), timer_interrupt,
- SA_INTERRUPT, timer_name[cpu], NULL));
-}
-#endif
-
-/*
- * /proc/sys/xen: This really belongs in another file. It can stay here for
- * now however.
- */
-static ctl_table xen_subtable[] = {
- {1, "independent_wallclock", &independent_wallclock,
- sizeof(independent_wallclock), 0644, NULL, proc_dointvec},
- {0}
-};
-static ctl_table xen_table[] = {
- {123, "xen", NULL, 0, 0555, xen_subtable},
- {0}
-};
-static int __init xen_sysctl_init(void)
-{
- (void)register_sysctl_table(xen_table, 0);
- return 0;
-}
-__initcall(xen_sysctl_init);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/timers/Makefile
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/timers/Makefile Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,17 +0,0 @@
-#
-# Makefile for x86 timers
-#
-
-XENARCH := $(subst ",,$(CONFIG_XENARCH))
-
-obj-y := timer_tsc.o
-c-obj-y :=
-
-c-link :=
-
-$(patsubst %.o,$(obj)/%.c,$(c-obj-y) $(c-link)):
- @ln -fsn $(srctree)/arch/i386/kernel/timers/$(notdir $@) $@
-
-obj-y += $(c-obj-y)
-
-clean-files += $(patsubst %.o,%.c,$(c-obj-y) $(c-obj-) $(c-link))
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/timers/timer_tsc.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/timers/timer_tsc.c Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,379 +0,0 @@
-/*
- * This code largely moved from arch/i386/kernel/time.c.
- * See comments there for proper credits.
- */
-
-#include <linux/spinlock.h>
-#include <linux/init.h>
-#include <linux/timex.h>
-#include <linux/errno.h>
-#include <linux/cpufreq.h>
-#include <linux/string.h>
-#include <linux/jiffies.h>
-
-#include <asm/timer.h>
-#include <asm/io.h>
-/* processor.h for distable_tsc flag */
-#include <asm/processor.h>
-
-#include "io_ports.h"
-#include "mach_timer.h"
-
-#include <asm/hpet.h>
-
-#ifdef CONFIG_HPET_TIMER
-static unsigned long hpet_usec_quotient;
-static unsigned long hpet_last;
-static struct timer_opts timer_tsc;
-#endif
-
-static inline void cpufreq_delayed_get(void);
-
-int tsc_disable __initdata = 0;
-
-extern spinlock_t i8253_lock;
-
-static int use_tsc;
-
-static unsigned long long monotonic_base;
-static u32 monotonic_offset;
-static seqlock_t monotonic_lock = SEQLOCK_UNLOCKED;
-
-/* convert from cycles(64bits) => nanoseconds (64bits)
- * basic equation:
- * ns = cycles / (freq / ns_per_sec)
- * ns = cycles * (ns_per_sec / freq)
- * ns = cycles * (10^9 / (cpu_mhz * 10^6))
- * ns = cycles * (10^3 / cpu_mhz)
- *
- * Then we use scaling math (suggested by george@xxxxxxxxxx) to get:
- * ns = cycles * (10^3 * SC / cpu_mhz) / SC
- * ns = cycles * cyc2ns_scale / SC
- *
- * And since SC is a constant power of two, we can convert the div
- * into a shift.
- * -johnstul@xxxxxxxxxx "math is hard, lets go shopping!"
- */
-static unsigned long cyc2ns_scale;
-#define CYC2NS_SCALE_FACTOR 10 /* 2^10, carefully chosen */
-
-static inline void set_cyc2ns_scale(unsigned long cpu_mhz)
-{
- cyc2ns_scale = (1000 << CYC2NS_SCALE_FACTOR)/cpu_mhz;
-}
-
-static inline unsigned long long cycles_2_ns(unsigned long long cyc)
-{
- return (cyc * cyc2ns_scale) >> CYC2NS_SCALE_FACTOR;
-}
-
-/* Cached *multiplier* to convert TSC counts to microseconds.
- * (see the equation below).
- * Equal to 2^32 * (1 / (clocks per usec) ).
- * Initialized in time_init.
- */
-static unsigned long fast_gettimeoffset_quotient;
-
-extern u32 shadow_tsc_stamp;
-extern u64 shadow_system_time;
-
-static unsigned long get_offset_tsc(void)
-{
- register unsigned long eax, edx;
-
- /* Read the Time Stamp Counter */
-
- rdtsc(eax,edx);
-
- /* .. relative to previous jiffy (32 bits is enough) */
- eax -= shadow_tsc_stamp;
-
- /*
- * Time offset = (tsc_low delta) * fast_gettimeoffset_quotient
- * = (tsc_low delta) * (usecs_per_clock)
- * = (tsc_low delta) * (usecs_per_jiffy / clocks_per_jiffy)
- *
- * Using a mull instead of a divl saves up to 31 clock cycles
- * in the critical path.
- */
-
- __asm__("mull %2"
- :"=a" (eax), "=d" (edx)
- :"rm" (fast_gettimeoffset_quotient),
- "0" (eax));
-
- /* our adjusted time offset in microseconds */
- return edx;
-}
-
-static unsigned long long monotonic_clock_tsc(void)
-{
- unsigned long long last_offset, this_offset, base;
- unsigned seq;
-
- /* atomically read monotonic base & last_offset */
- do {
- seq = read_seqbegin(&monotonic_lock);
- last_offset = monotonic_offset;
- base = monotonic_base;
- } while (read_seqretry(&monotonic_lock, seq));
-
- /* Read the Time Stamp Counter */
- rdtscll(this_offset);
-
- /* return the value in ns */
- return base + cycles_2_ns(this_offset - last_offset);
-}
-
-/*
- * Scheduler clock - returns current time in nanosec units.
- */
-unsigned long long sched_clock(void)
-{
- unsigned long long this_offset;
-
- /*
- * In the NUMA case we dont use the TSC as they are not
- * synchronized across all CPUs.
- */
-#ifndef CONFIG_NUMA
- if (!use_tsc)
-#endif
- /* no locking but a rare wrong value is not a big deal */
- return jiffies_64 * (1000000000 / HZ);
-
- /* Read the Time Stamp Counter */
- rdtscll(this_offset);
-
- /* return the value in ns */
- return cycles_2_ns(this_offset);
-}
-
-
-static void mark_offset_tsc(void)
-{
-
- /* update the monotonic base value */
- write_seqlock(&monotonic_lock);
- monotonic_base = shadow_system_time;
- monotonic_offset = shadow_tsc_stamp;
- write_sequnlock(&monotonic_lock);
-}
-
-static void delay_tsc(unsigned long loops)
-{
- unsigned long bclock, now;
-
- rdtscl(bclock);
- do
- {
- rep_nop();
- rdtscl(now);
- } while ((now-bclock) < loops);
-}
-
-#ifdef CONFIG_HPET_TIMER
-static void mark_offset_tsc_hpet(void)
-{
- unsigned long long this_offset, last_offset;
- unsigned long offset, temp, hpet_current;
-
- write_seqlock(&monotonic_lock);
- last_offset = ((unsigned long long)last_tsc_high<<32)|last_tsc_low;
- /*
- * It is important that these two operations happen almost at
- * the same time. We do the RDTSC stuff first, since it's
- * faster. To avoid any inconsistencies, we need interrupts
- * disabled locally.
- */
- /*
- * Interrupts are just disabled locally since the timer irq
- * has the SA_INTERRUPT flag set. -arca
- */
- /* read Pentium cycle counter */
-
- hpet_current = hpet_readl(HPET_COUNTER);
- rdtsc(last_tsc_low, last_tsc_high);
-
- /* lost tick compensation */
- offset = hpet_readl(HPET_T0_CMP) - hpet_tick;
- if (unlikely(((offset - hpet_last) > hpet_tick) && (hpet_last != 0))) {
- int lost_ticks = (offset - hpet_last) / hpet_tick;
- jiffies_64 += lost_ticks;
- }
- hpet_last = hpet_current;
-
- /* update the monotonic base value */
- this_offset = ((unsigned long long)last_tsc_high<<32)|last_tsc_low;
- monotonic_base += cycles_2_ns(this_offset - last_offset);
- write_sequnlock(&monotonic_lock);
-
- /* calculate delay_at_last_interrupt */
- /*
- * Time offset = (hpet delta) * ( usecs per HPET clock )
- * = (hpet delta) * ( usecs per tick / HPET clocks per tick)
- * = (hpet delta) * ( hpet_usec_quotient ) / (2^32)
- * Where,
- * hpet_usec_quotient = (2^32 * usecs per tick)/HPET clocks per tick
- */
- delay_at_last_interrupt = hpet_current - offset;
- ASM_MUL64_REG(temp, delay_at_last_interrupt,
- hpet_usec_quotient, delay_at_last_interrupt);
-}
-#endif
-
-
-#ifdef CONFIG_CPU_FREQ
-#include <linux/workqueue.h>
-
-static unsigned int cpufreq_delayed_issched = 0;
-static unsigned int cpufreq_init = 0;
-static struct work_struct cpufreq_delayed_get_work;
-
-static void handle_cpufreq_delayed_get(void *v)
-{
- unsigned int cpu;
- for_each_online_cpu(cpu) {
- cpufreq_get(cpu);
- }
- cpufreq_delayed_issched = 0;
-}
-
-/* if we notice lost ticks, schedule a call to cpufreq_get() as it tries
- * to verify the CPU frequency the timing core thinks the CPU is running
- * at is still correct.
- */
-static inline void cpufreq_delayed_get(void)
-{
- if (cpufreq_init && !cpufreq_delayed_issched) {
- cpufreq_delayed_issched = 1;
- printk(KERN_DEBUG "Losing some ticks... checking if CPU
frequency changed.\n");
- schedule_work(&cpufreq_delayed_get_work);
- }
-}
-
-/* If the CPU frequency is scaled, TSC-based delays will need a different
- * loops_per_jiffy value to function properly.
- */
-
-static unsigned int ref_freq = 0;
-static unsigned long loops_per_jiffy_ref = 0;
-
-#ifndef CONFIG_SMP
-static unsigned long fast_gettimeoffset_ref = 0;
-static unsigned long cpu_khz_ref = 0;
-#endif
-
-static int
-time_cpufreq_notifier(struct notifier_block *nb, unsigned long val,
- void *data)
-{
- struct cpufreq_freqs *freq = data;
-
- if (val != CPUFREQ_RESUMECHANGE)
- write_seqlock_irq(&xtime_lock);
- if (!ref_freq) {
- ref_freq = freq->old;
- loops_per_jiffy_ref = cpu_data[freq->cpu].loops_per_jiffy;
-#ifndef CONFIG_SMP
- fast_gettimeoffset_ref = fast_gettimeoffset_quotient;
- cpu_khz_ref = cpu_khz;
-#endif
- }
-
- if ((val == CPUFREQ_PRECHANGE && freq->old < freq->new) ||
- (val == CPUFREQ_POSTCHANGE && freq->old > freq->new) ||
- (val == CPUFREQ_RESUMECHANGE)) {
- if (!(freq->flags & CPUFREQ_CONST_LOOPS))
- cpu_data[freq->cpu].loops_per_jiffy =
cpufreq_scale(loops_per_jiffy_ref, ref_freq, freq->new);
-#ifndef CONFIG_SMP
- if (cpu_khz)
- cpu_khz = cpufreq_scale(cpu_khz_ref, ref_freq,
freq->new);
- if (use_tsc) {
- if (!(freq->flags & CPUFREQ_CONST_LOOPS)) {
- fast_gettimeoffset_quotient =
cpufreq_scale(fast_gettimeoffset_ref, freq->new, ref_freq);
- set_cyc2ns_scale(cpu_khz/1000);
- }
- }
-#endif
- }
-
- if (val != CPUFREQ_RESUMECHANGE)
- write_sequnlock_irq(&xtime_lock);
-
- return 0;
-}
-
-static struct notifier_block time_cpufreq_notifier_block = {
- .notifier_call = time_cpufreq_notifier
-};
-
-
-static int __init cpufreq_tsc(void)
-{
- int ret;
- INIT_WORK(&cpufreq_delayed_get_work, handle_cpufreq_delayed_get, NULL);
- ret = cpufreq_register_notifier(&time_cpufreq_notifier_block,
- CPUFREQ_TRANSITION_NOTIFIER);
- if (!ret)
- cpufreq_init = 1;
- return ret;
-}
-core_initcall(cpufreq_tsc);
-
-#else /* CONFIG_CPU_FREQ */
-static inline void cpufreq_delayed_get(void) { return; }
-#endif
-
-
-static int init_tsc(char* override)
-{
- u64 __cpu_khz;
-
- __cpu_khz = HYPERVISOR_shared_info->cpu_freq;
- do_div(__cpu_khz, 1000);
- cpu_khz = (u32)__cpu_khz;
- printk(KERN_INFO "Xen reported: %lu.%03lu MHz processor.\n",
- cpu_khz / 1000, cpu_khz % 1000);
-
- /* (10^6 * 2^32) / cpu_hz = (10^3 * 2^32) / cpu_khz =
- (2^32 * 1 / (clocks/us)) */
- {
- unsigned long eax=0, edx=1000;
- __asm__("divl %2"
- :"=a" (fast_gettimeoffset_quotient), "=d" (edx)
- :"r" (cpu_khz),
- "0" (eax), "1" (edx));
- }
-
- set_cyc2ns_scale(cpu_khz/1000);
-
- use_tsc = 1;
-
- return 0;
-}
-
-static int __init tsc_setup(char *str)
-{
- printk(KERN_WARNING "notsc: cannot disable TSC in Xen/Linux.\n");
- return 1;
-}
-__setup("notsc", tsc_setup);
-
-
-
-/************************************************************/
-
-/* tsc timer_opts struct */
-struct timer_opts timer_tsc = {
- .name = "tsc",
- .mark_offset = mark_offset_tsc,
- .get_offset = get_offset_tsc,
- .monotonic_clock = monotonic_clock_tsc,
- .delay = delay_tsc,
-};
-
-struct init_timer_opts timer_tsc_init = {
- .init = init_tsc,
- .opts = &timer_tsc,
-};
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/traps.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/traps.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,982 +0,0 @@
-/*
- * linux/arch/i386/traps.c
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- *
- * Pentium III FXSR, SSE support
- * Gareth Hughes <gareth@xxxxxxxxxxx>, May 2000
- */
-
-/*
- * 'Traps.c' handles hardware traps and faults after we have saved some
- * state in 'asm.s'.
- */
-#include <linux/config.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/timer.h>
-#include <linux/mm.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/spinlock.h>
-#include <linux/interrupt.h>
-#include <linux/highmem.h>
-#include <linux/kallsyms.h>
-#include <linux/ptrace.h>
-#include <linux/utsname.h>
-#include <linux/kprobes.h>
-
-#ifdef CONFIG_EISA
-#include <linux/ioport.h>
-#include <linux/eisa.h>
-#endif
-
-#ifdef CONFIG_MCA
-#include <linux/mca.h>
-#endif
-
-#include <asm/processor.h>
-#include <asm/system.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-#include <asm/atomic.h>
-#include <asm/debugreg.h>
-#include <asm/desc.h>
-#include <asm/i387.h>
-#include <asm/nmi.h>
-
-#include <asm/smp.h>
-#include <asm/arch_hooks.h>
-#include <asm/kdebug.h>
-
-#include <linux/irq.h>
-#include <linux/module.h>
-
-#include "mach_traps.h"
-
-asmlinkage int system_call(void);
-
-/* Do we ignore FPU interrupts ? */
-char ignore_fpu_irq = 0;
-
-/*
- * The IDT has to be page-aligned to simplify the Pentium
- * F0 0F bug workaround.. We have a special link segment
- * for this.
- */
-struct desc_struct idt_table[256] __attribute__((__section__(".data.idt"))) =
{ {0, 0}, };
-
-asmlinkage void divide_error(void);
-asmlinkage void debug(void);
-asmlinkage void nmi(void);
-asmlinkage void int3(void);
-asmlinkage void overflow(void);
-asmlinkage void bounds(void);
-asmlinkage void invalid_op(void);
-asmlinkage void device_not_available(void);
-asmlinkage void coprocessor_segment_overrun(void);
-asmlinkage void invalid_TSS(void);
-asmlinkage void segment_not_present(void);
-asmlinkage void stack_segment(void);
-asmlinkage void general_protection(void);
-asmlinkage void page_fault(void);
-asmlinkage void coprocessor_error(void);
-asmlinkage void simd_coprocessor_error(void);
-asmlinkage void alignment_check(void);
-asmlinkage void fixup_4gb_segment(void);
-asmlinkage void machine_check(void);
-
-static int kstack_depth_to_print = 24;
-struct notifier_block *i386die_chain;
-static DEFINE_SPINLOCK(die_notifier_lock);
-
-int register_die_notifier(struct notifier_block *nb)
-{
- int err = 0;
- unsigned long flags;
- spin_lock_irqsave(&die_notifier_lock, flags);
- err = notifier_chain_register(&i386die_chain, nb);
- spin_unlock_irqrestore(&die_notifier_lock, flags);
- return err;
-}
-
-static inline int valid_stack_ptr(struct thread_info *tinfo, void *p)
-{
- return p > (void *)tinfo &&
- p < (void *)tinfo + THREAD_SIZE - 3;
-}
-
-static inline unsigned long print_context_stack(struct thread_info *tinfo,
- unsigned long *stack, unsigned long ebp)
-{
- unsigned long addr;
-
-#ifdef CONFIG_FRAME_POINTER
- while (valid_stack_ptr(tinfo, (void *)ebp)) {
- addr = *(unsigned long *)(ebp + 4);
- printk(" [<%08lx>] ", addr);
- print_symbol("%s", addr);
- printk("\n");
- ebp = *(unsigned long *)ebp;
- }
-#else
- while (valid_stack_ptr(tinfo, stack)) {
- addr = *stack++;
- if (__kernel_text_address(addr)) {
- printk(" [<%08lx>]", addr);
- print_symbol(" %s", addr);
- printk("\n");
- }
- }
-#endif
- return ebp;
-}
-
-void show_trace(struct task_struct *task, unsigned long * stack)
-{
- unsigned long ebp;
-
- if (!task)
- task = current;
-
- if (task == current) {
- /* Grab ebp right from our regs */
- asm ("movl %%ebp, %0" : "=r" (ebp) : );
- } else {
- /* ebp is the last reg pushed by switch_to */
- ebp = *(unsigned long *) task->thread.esp;
- }
-
- while (1) {
- struct thread_info *context;
- context = (struct thread_info *)
- ((unsigned long)stack & (~(THREAD_SIZE - 1)));
- ebp = print_context_stack(context, stack, ebp);
- stack = (unsigned long*)context->previous_esp;
- if (!stack)
- break;
- printk(" =======================\n");
- }
-}
-
-void show_stack(struct task_struct *task, unsigned long *esp)
-{
- unsigned long *stack;
- int i;
-
- if (esp == NULL) {
- if (task)
- esp = (unsigned long*)task->thread.esp;
- else
- esp = (unsigned long *)&esp;
- }
-
- stack = esp;
- for(i = 0; i < kstack_depth_to_print; i++) {
- if (kstack_end(stack))
- break;
- if (i && ((i % 8) == 0))
- printk("\n ");
- printk("%08lx ", *stack++);
- }
- printk("\nCall Trace:\n");
- show_trace(task, esp);
-}
-
-/*
- * The architecture-independent dump_stack generator
- */
-void dump_stack(void)
-{
- unsigned long stack;
-
- show_trace(current, &stack);
-}
-
-EXPORT_SYMBOL(dump_stack);
-
-void show_registers(struct pt_regs *regs)
-{
- int i;
- int in_kernel = 1;
- unsigned long esp;
- unsigned short ss;
-
- esp = (unsigned long) (®s->esp);
- ss = __KERNEL_DS;
- if (regs->xcs & 2) {
- in_kernel = 0;
- esp = regs->esp;
- ss = regs->xss & 0xffff;
- }
- print_modules();
- printk("CPU: %d\nEIP: %04x:[<%08lx>] %s VLI\nEFLAGS: %08lx"
- " (%s) \n",
- smp_processor_id(), 0xffff & regs->xcs, regs->eip,
- print_tainted(), regs->eflags, system_utsname.release);
- print_symbol("EIP is at %s\n", regs->eip);
- printk("eax: %08lx ebx: %08lx ecx: %08lx edx: %08lx\n",
- regs->eax, regs->ebx, regs->ecx, regs->edx);
- printk("esi: %08lx edi: %08lx ebp: %08lx esp: %08lx\n",
- regs->esi, regs->edi, regs->ebp, esp);
- printk("ds: %04x es: %04x ss: %04x\n",
- regs->xds & 0xffff, regs->xes & 0xffff, ss);
- printk("Process %s (pid: %d, threadinfo=%p task=%p)",
- current->comm, current->pid, current_thread_info(), current);
- /*
- * When in-kernel, we also print out the stack and code at the
- * time of the fault..
- */
- if (in_kernel) {
- u8 *eip;
-
- printk("\nStack: ");
- show_stack(NULL, (unsigned long*)esp);
-
- printk("Code: ");
-
- eip = (u8 *)regs->eip - 43;
- for (i = 0; i < 64; i++, eip++) {
- unsigned char c;
-
- if (eip < (u8 *)PAGE_OFFSET || __get_user(c, eip)) {
- printk(" Bad EIP value.");
- break;
- }
- if (eip == (u8 *)regs->eip)
- printk("<%02x> ", c);
- else
- printk("%02x ", c);
- }
- }
- printk("\n");
-}
-
-static void handle_BUG(struct pt_regs *regs)
-{
- unsigned short ud2;
- unsigned short line;
- char *file;
- char c;
- unsigned long eip;
-
- if (regs->xcs & 2)
- goto no_bug; /* Not in kernel */
-
- eip = regs->eip;
-
- if (eip < PAGE_OFFSET)
- goto no_bug;
- if (__get_user(ud2, (unsigned short *)eip))
- goto no_bug;
- if (ud2 != 0x0b0f)
- goto no_bug;
- if (__get_user(line, (unsigned short *)(eip + 2)))
- goto bug;
- if (__get_user(file, (char **)(eip + 4)) ||
- (unsigned long)file < PAGE_OFFSET || __get_user(c, file))
- file = "<bad filename>";
-
- printk("------------[ cut here ]------------\n");
- printk(KERN_ALERT "kernel BUG at %s:%d!\n", file, line);
-
-no_bug:
- return;
-
- /* Here we know it was a BUG but file-n-line is unavailable */
-bug:
- printk("Kernel BUG\n");
-}
-
-void die(const char * str, struct pt_regs * regs, long err)
-{
- static struct {
- spinlock_t lock;
- u32 lock_owner;
- int lock_owner_depth;
- } die = {
- .lock = SPIN_LOCK_UNLOCKED,
- .lock_owner = -1,
- .lock_owner_depth = 0
- };
- static int die_counter;
-
- if (die.lock_owner != _smp_processor_id()) {
- console_verbose();
- spin_lock_irq(&die.lock);
- die.lock_owner = smp_processor_id();
- die.lock_owner_depth = 0;
- bust_spinlocks(1);
- }
-
- if (++die.lock_owner_depth < 3) {
- int nl = 0;
- handle_BUG(regs);
- printk(KERN_ALERT "%s: %04lx [#%d]\n", str, err & 0xffff,
++die_counter);
-#ifdef CONFIG_PREEMPT
- printk("PREEMPT ");
- nl = 1;
-#endif
-#ifdef CONFIG_SMP
- printk("SMP ");
- nl = 1;
-#endif
-#ifdef CONFIG_DEBUG_PAGEALLOC
- printk("DEBUG_PAGEALLOC");
- nl = 1;
-#endif
- if (nl)
- printk("\n");
- notify_die(DIE_OOPS, (char *)str, regs, err, 255, SIGSEGV);
- show_registers(regs);
- } else
- printk(KERN_ERR "Recursive die() failure, output suppressed\n");
-
- bust_spinlocks(0);
- die.lock_owner = -1;
- spin_unlock_irq(&die.lock);
- if (in_interrupt())
- panic("Fatal exception in interrupt");
-
- if (panic_on_oops) {
- printk(KERN_EMERG "Fatal exception: panic in 5 seconds\n");
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(5 * HZ);
- panic("Fatal exception");
- }
- do_exit(SIGSEGV);
-}
-
-static inline void die_if_kernel(const char * str, struct pt_regs * regs, long
err)
-{
- if (!(regs->eflags & VM_MASK) && !(2 & regs->xcs))
- die(str, regs, err);
-}
-
-static void do_trap(int trapnr, int signr, char *str, int vm86,
- struct pt_regs * regs, long error_code, siginfo_t
*info)
-{
- if (regs->eflags & VM_MASK) {
- if (vm86)
- goto vm86_trap;
- goto trap_signal;
- }
-
- if (!(regs->xcs & 2))
- goto kernel_trap;
-
- trap_signal: {
- struct task_struct *tsk = current;
- tsk->thread.error_code = error_code;
- tsk->thread.trap_no = trapnr;
- if (info)
- force_sig_info(signr, info, tsk);
- else
- force_sig(signr, tsk);
- return;
- }
-
- kernel_trap: {
- if (!fixup_exception(regs))
- die(str, regs, error_code);
- return;
- }
-
- vm86_trap: {
- int ret = handle_vm86_trap((struct kernel_vm86_regs *) regs,
error_code, trapnr);
- if (ret) goto trap_signal;
- return;
- }
-}
-
-#define DO_ERROR(trapnr, signr, str, name) \
-fastcall void do_##name(struct pt_regs * regs, long error_code) \
-{ \
- if (notify_die(DIE_TRAP, str, regs, error_code, trapnr, signr) \
- == NOTIFY_STOP) \
- return; \
- do_trap(trapnr, signr, str, 0, regs, error_code, NULL); \
-}
-
-#define DO_ERROR_INFO(trapnr, signr, str, name, sicode, siaddr) \
-fastcall void do_##name(struct pt_regs * regs, long error_code) \
-{ \
- siginfo_t info; \
- info.si_signo = signr; \
- info.si_errno = 0; \
- info.si_code = sicode; \
- info.si_addr = (void __user *)siaddr; \
- if (notify_die(DIE_TRAP, str, regs, error_code, trapnr, signr) \
- == NOTIFY_STOP) \
- return; \
- do_trap(trapnr, signr, str, 0, regs, error_code, &info); \
-}
-
-#define DO_VM86_ERROR(trapnr, signr, str, name) \
-fastcall void do_##name(struct pt_regs * regs, long error_code) \
-{ \
- if (notify_die(DIE_TRAP, str, regs, error_code, trapnr, signr) \
- == NOTIFY_STOP) \
- return; \
- do_trap(trapnr, signr, str, 1, regs, error_code, NULL); \
-}
-
-#define DO_VM86_ERROR_INFO(trapnr, signr, str, name, sicode, siaddr) \
-fastcall void do_##name(struct pt_regs * regs, long error_code) \
-{ \
- siginfo_t info; \
- info.si_signo = signr; \
- info.si_errno = 0; \
- info.si_code = sicode; \
- info.si_addr = (void __user *)siaddr; \
- if (notify_die(DIE_TRAP, str, regs, error_code, trapnr, signr) \
- == NOTIFY_STOP) \
- return; \
- do_trap(trapnr, signr, str, 1, regs, error_code, &info); \
-}
-
-DO_VM86_ERROR_INFO( 0, SIGFPE, "divide error", divide_error, FPE_INTDIV,
regs->eip)
-#ifndef CONFIG_KPROBES
-DO_VM86_ERROR( 3, SIGTRAP, "int3", int3)
-#endif
-DO_VM86_ERROR( 4, SIGSEGV, "overflow", overflow)
-DO_VM86_ERROR( 5, SIGSEGV, "bounds", bounds)
-DO_ERROR_INFO( 6, SIGILL, "invalid operand", invalid_op, ILL_ILLOPN,
regs->eip)
-DO_VM86_ERROR( 7, SIGSEGV, "device not available", device_not_available)
-DO_ERROR( 9, SIGFPE, "coprocessor segment overrun",
coprocessor_segment_overrun)
-DO_ERROR(10, SIGSEGV, "invalid TSS", invalid_TSS)
-DO_ERROR(11, SIGBUS, "segment not present", segment_not_present)
-DO_ERROR(12, SIGBUS, "stack segment", stack_segment)
-DO_ERROR_INFO(17, SIGBUS, "alignment check", alignment_check, BUS_ADRALN, 0)
-#ifdef CONFIG_X86_MCE
-DO_ERROR(18, SIGBUS, "machine check", machine_check)
-#endif
-
-fastcall void do_general_protection(struct pt_regs * regs, long error_code)
-{
- /*
- * If we trapped on an LDT access then ensure that the default_ldt is
- * loaded, if nothing else. We load default_ldt lazily because LDT
- * switching costs time and many applications don't need it.
- */
- if (unlikely((error_code & 6) == 4)) {
- unsigned long ldt;
- __asm__ __volatile__ ("sldt %0" : "=r" (ldt));
- if (ldt == 0) {
- xen_set_ldt((unsigned long)&default_ldt[0], 5);
- return;
- }
- }
-
- if (regs->eflags & VM_MASK)
- goto gp_in_vm86;
-
- if (!(regs->xcs & 2))
- goto gp_in_kernel;
-
- current->thread.error_code = error_code;
- current->thread.trap_no = 13;
- force_sig(SIGSEGV, current);
- return;
-
-gp_in_vm86:
- local_irq_enable();
- handle_vm86_fault((struct kernel_vm86_regs *) regs, error_code);
- return;
-
-gp_in_kernel:
- if (!fixup_exception(regs)) {
- if (notify_die(DIE_GPF, "general protection fault", regs,
- error_code, 13, SIGSEGV) == NOTIFY_STOP)
- return;
- die("general protection fault", regs, error_code);
- }
-}
-
-static void mem_parity_error(unsigned char reason, struct pt_regs * regs)
-{
- printk("Uhhuh. NMI received. Dazed and confused, but trying to
continue\n");
- printk("You probably have a hardware problem with your RAM chips\n");
-
- /* Clear and disable the memory parity error line. */
- clear_mem_error(reason);
-}
-
-static void io_check_error(unsigned char reason, struct pt_regs * regs)
-{
- unsigned long i;
-
- printk("NMI: IOCK error (debug interrupt?)\n");
- show_registers(regs);
-
- /* Re-enable the IOCK line, wait for a few seconds */
- reason = (reason & 0xf) | 8;
- outb(reason, 0x61);
- i = 2000;
- while (--i) udelay(1000);
- reason &= ~8;
- outb(reason, 0x61);
-}
-
-static void unknown_nmi_error(unsigned char reason, struct pt_regs * regs)
-{
-#ifdef CONFIG_MCA
- /* Might actually be able to figure out what the guilty party
- * is. */
- if( MCA_bus ) {
- mca_handle_nmi();
- return;
- }
-#endif
- printk("Uhhuh. NMI received for unknown reason %02x on CPU %d.\n",
- reason, smp_processor_id());
- printk("Dazed and confused, but trying to continue\n");
- printk("Do you have a strange power saving mode enabled?\n");
-}
-
-static DEFINE_SPINLOCK(nmi_print_lock);
-
-void die_nmi (struct pt_regs *regs, const char *msg)
-{
- spin_lock(&nmi_print_lock);
- /*
- * We are in trouble anyway, lets at least try
- * to get a message out.
- */
- bust_spinlocks(1);
- printk(msg);
- printk(" on CPU%d, eip %08lx, registers:\n",
- smp_processor_id(), regs->eip);
- show_registers(regs);
- printk("console shuts up ...\n");
- console_silent();
- spin_unlock(&nmi_print_lock);
- bust_spinlocks(0);
- do_exit(SIGSEGV);
-}
-
-static void default_do_nmi(struct pt_regs * regs)
-{
- unsigned char reason = 0;
-
- /* Only the BSP gets external NMIs from the system. */
- if (!smp_processor_id())
- reason = get_nmi_reason();
-
- if (!(reason & 0xc0)) {
- if (notify_die(DIE_NMI_IPI, "nmi_ipi", regs, reason, 0, SIGINT)
- == NOTIFY_STOP)
- return;
-#ifdef CONFIG_X86_LOCAL_APIC
- /*
- * Ok, so this is none of the documented NMI sources,
- * so it must be the NMI watchdog.
- */
- if (nmi_watchdog) {
- nmi_watchdog_tick(regs);
- return;
- }
-#endif
- unknown_nmi_error(reason, regs);
- return;
- }
- if (notify_die(DIE_NMI, "nmi", regs, reason, 0, SIGINT) == NOTIFY_STOP)
- return;
- if (reason & 0x80)
- mem_parity_error(reason, regs);
- if (reason & 0x40)
- io_check_error(reason, regs);
- /*
- * Reassert NMI in case it became active meanwhile
- * as it's edge-triggered.
- */
- reassert_nmi();
-}
-
-static int dummy_nmi_callback(struct pt_regs * regs, int cpu)
-{
- return 0;
-}
-
-static nmi_callback_t nmi_callback = dummy_nmi_callback;
-
-fastcall void do_nmi(struct pt_regs * regs, long error_code)
-{
- int cpu;
-
- nmi_enter();
-
- cpu = smp_processor_id();
-
-#ifdef CONFIG_HOTPLUG_CPU
- if (!cpu_online(cpu)) {
- nmi_exit();
- return;
- }
-#endif
-
- ++nmi_count(cpu);
-
- if (!nmi_callback(regs, cpu))
- default_do_nmi(regs);
-
- nmi_exit();
-}
-
-void set_nmi_callback(nmi_callback_t callback)
-{
- nmi_callback = callback;
-}
-
-void unset_nmi_callback(void)
-{
- nmi_callback = dummy_nmi_callback;
-}
-
-#ifdef CONFIG_KPROBES
-fastcall int do_int3(struct pt_regs *regs, long error_code)
-{
- if (notify_die(DIE_INT3, "int3", regs, error_code, 3, SIGTRAP)
- == NOTIFY_STOP)
- return 1;
- /* This is an interrupt gate, because kprobes wants interrupts
- disabled. Normal trap handlers don't. */
- restore_interrupts(regs);
- do_trap(3, SIGTRAP, "int3", 1, regs, error_code, NULL);
- return 0;
-}
-#endif
-
-/*
- * Our handling of the processor debug registers is non-trivial.
- * We do not clear them on entry and exit from the kernel. Therefore
- * it is possible to get a watchpoint trap here from inside the kernel.
- * However, the code in ./ptrace.c has ensured that the user can
- * only set watchpoints on userspace addresses. Therefore the in-kernel
- * watchpoint trap can only occur in code which is reading/writing
- * from user space. Such code must not hold kernel locks (since it
- * can equally take a page fault), therefore it is safe to call
- * force_sig_info even though that claims and releases locks.
- *
- * Code in ./signal.c ensures that the debug control register
- * is restored before we deliver any signal, and therefore that
- * user code runs with the correct debug control register even though
- * we clear it here.
- *
- * Being careful here means that we don't have to be as careful in a
- * lot of more complicated places (task switching can be a bit lazy
- * about restoring all the debug state, and ptrace doesn't have to
- * find every occurrence of the TF bit that could be saved away even
- * by user code)
- */
-fastcall void do_debug(struct pt_regs * regs, long error_code)
-{
- unsigned int condition;
- struct task_struct *tsk = current;
-
- condition = HYPERVISOR_get_debugreg(6);
-
- if (notify_die(DIE_DEBUG, "debug", regs, condition, error_code,
- SIGTRAP) == NOTIFY_STOP)
- return;
-#if 0
- /* It's safe to allow irq's after DR6 has been saved */
- if (regs->eflags & X86_EFLAGS_IF)
- local_irq_enable();
-#endif
-
- /* Mask out spurious debug traps due to lazy DR7 setting */
- if (condition & (DR_TRAP0|DR_TRAP1|DR_TRAP2|DR_TRAP3)) {
- if (!tsk->thread.debugreg[7])
- goto clear_dr7;
- }
-
- if (regs->eflags & VM_MASK)
- goto debug_vm86;
-
- /* Save debug status register where ptrace can see it */
- tsk->thread.debugreg[6] = condition;
-
- /*
- * Single-stepping through TF: make sure we ignore any events in
- * kernel space (but re-enable TF when returning to user mode).
- * And if the event was due to a debugger (PT_DTRACE), clear the
- * TF flag so that register information is correct.
- */
- if (condition & DR_STEP) {
- /*
- * We already checked v86 mode above, so we can
- * check for kernel mode by just checking the CPL
- * of CS.
- */
- if ((regs->xcs & 2) == 0)
- goto clear_TF_reenable;
-
- if (likely(tsk->ptrace & PT_DTRACE)) {
- tsk->ptrace &= ~PT_DTRACE;
- regs->eflags &= ~TF_MASK;
- }
- }
-
- /* Ok, finally something we can handle */
- send_sigtrap(tsk, regs, error_code);
-
- /* Disable additional traps. They'll be re-enabled when
- * the signal is delivered.
- */
-clear_dr7:
- HYPERVISOR_set_debugreg(7, 0);
- return;
-
-debug_vm86:
- handle_vm86_trap((struct kernel_vm86_regs *) regs, error_code, 1);
- return;
-
-clear_TF_reenable:
- set_tsk_thread_flag(tsk, TIF_SINGLESTEP);
- regs->eflags &= ~TF_MASK;
- return;
-}
-
-/*
- * Note that we play around with the 'TS' bit in an attempt to get
- * the correct behaviour even in the presence of the asynchronous
- * IRQ13 behaviour
- */
-void math_error(void __user *eip)
-{
- struct task_struct * task;
- siginfo_t info;
- unsigned short cwd, swd;
-
- /*
- * Save the info for the exception handler and clear the error.
- */
- task = current;
- save_init_fpu(task);
- task->thread.trap_no = 16;
- task->thread.error_code = 0;
- info.si_signo = SIGFPE;
- info.si_errno = 0;
- info.si_code = __SI_FAULT;
- info.si_addr = eip;
- /*
- * (~cwd & swd) will mask out exceptions that are not set to unmasked
- * status. 0x3f is the exception bits in these regs, 0x200 is the
- * C1 reg you need in case of a stack fault, 0x040 is the stack
- * fault bit. We should only be taking one exception at a time,
- * so if this combination doesn't produce any single exception,
- * then we have a bad program that isn't syncronizing its FPU usage
- * and it will suffer the consequences since we won't be able to
- * fully reproduce the context of the exception
- */
- cwd = get_fpu_cwd(task);
- swd = get_fpu_swd(task);
- switch (((~cwd) & swd & 0x3f) | (swd & 0x240)) {
- case 0x000:
- default:
- break;
- case 0x001: /* Invalid Op */
- case 0x041: /* Stack Fault */
- case 0x241: /* Stack Fault | Direction */
- info.si_code = FPE_FLTINV;
- /* Should we clear the SF or let user space do it ????
*/
- break;
- case 0x002: /* Denormalize */
- case 0x010: /* Underflow */
- info.si_code = FPE_FLTUND;
- break;
- case 0x004: /* Zero Divide */
- info.si_code = FPE_FLTDIV;
- break;
- case 0x008: /* Overflow */
- info.si_code = FPE_FLTOVF;
- break;
- case 0x020: /* Precision */
- info.si_code = FPE_FLTRES;
- break;
- }
- force_sig_info(SIGFPE, &info, task);
-}
-
-fastcall void do_coprocessor_error(struct pt_regs * regs, long error_code)
-{
- ignore_fpu_irq = 1;
- math_error((void __user *)regs->eip);
-}
-
-void simd_math_error(void __user *eip)
-{
- struct task_struct * task;
- siginfo_t info;
- unsigned short mxcsr;
-
- /*
- * Save the info for the exception handler and clear the error.
- */
- task = current;
- save_init_fpu(task);
- task->thread.trap_no = 19;
- task->thread.error_code = 0;
- info.si_signo = SIGFPE;
- info.si_errno = 0;
- info.si_code = __SI_FAULT;
- info.si_addr = eip;
- /*
- * The SIMD FPU exceptions are handled a little differently, as there
- * is only a single status/control register. Thus, to determine which
- * unmasked exception was caught we must mask the exception mask bits
- * at 0x1f80, and then use these to mask the exception bits at 0x3f.
- */
- mxcsr = get_fpu_mxcsr(task);
- switch (~((mxcsr & 0x1f80) >> 7) & (mxcsr & 0x3f)) {
- case 0x000:
- default:
- break;
- case 0x001: /* Invalid Op */
- info.si_code = FPE_FLTINV;
- break;
- case 0x002: /* Denormalize */
- case 0x010: /* Underflow */
- info.si_code = FPE_FLTUND;
- break;
- case 0x004: /* Zero Divide */
- info.si_code = FPE_FLTDIV;
- break;
- case 0x008: /* Overflow */
- info.si_code = FPE_FLTOVF;
- break;
- case 0x020: /* Precision */
- info.si_code = FPE_FLTRES;
- break;
- }
- force_sig_info(SIGFPE, &info, task);
-}
-
-fastcall void do_simd_coprocessor_error(struct pt_regs * regs,
- long error_code)
-{
- if (cpu_has_xmm) {
- /* Handle SIMD FPU exceptions on PIII+ processors. */
- ignore_fpu_irq = 1;
- simd_math_error((void __user *)regs->eip);
- } else {
- /*
- * Handle strange cache flush from user space exception
- * in all other cases. This is undocumented behaviour.
- */
- if (regs->eflags & VM_MASK) {
- handle_vm86_fault((struct kernel_vm86_regs *)regs,
- error_code);
- return;
- }
- die_if_kernel("cache flush denied", regs, error_code);
- current->thread.trap_no = 19;
- current->thread.error_code = error_code;
- force_sig(SIGSEGV, current);
- }
-}
-
-/*
- * 'math_state_restore()' saves the current math information in the
- * old math state array, and gets the new ones from the current task
- *
- * Careful.. There are problems with IBM-designed IRQ13 behaviour.
- * Don't touch unless you *really* know how it works.
- *
- * Must be called with kernel preemption disabled (in this case,
- * local interrupts are disabled at the call-site in entry.S).
- */
-asmlinkage void math_state_restore(struct pt_regs regs)
-{
- struct thread_info *thread = current_thread_info();
- struct task_struct *tsk = thread->task;
-
- /* NB. 'clts' is done for us by Xen during virtual trap. */
- if (!tsk_used_math(tsk))
- init_fpu(tsk);
- restore_fpu(tsk);
- thread->status |= TS_USEDFPU; /* So we fnsave on switch_to() */
-}
-
-#ifndef CONFIG_MATH_EMULATION
-
-asmlinkage void math_emulate(long arg)
-{
- printk("math-emulation not enabled and no coprocessor found.\n");
- printk("killing %s.\n",current->comm);
- force_sig(SIGFPE,current);
- schedule();
-}
-
-#endif /* CONFIG_MATH_EMULATION */
-
-#ifdef CONFIG_X86_F00F_BUG
-void __init trap_init_f00f_bug(void)
-{
- __set_fixmap(FIX_F00F_IDT, __pa(&idt_table), PAGE_KERNEL_RO);
-
- /*
- * Update the IDT descriptor and reload the IDT so that
- * it uses the read-only mapped virtual address.
- */
- idt_descr.address = fix_to_virt(FIX_F00F_IDT);
- __asm__ __volatile__("lidt %0" : : "m" (idt_descr));
-}
-#endif
-
-
-/* NB. All these are "trap gates" (i.e. events_mask isn't cleared). */
-static trap_info_t trap_table[] = {
- { 0, 0, __KERNEL_CS, (unsigned long)divide_error },
- { 1, 0, __KERNEL_CS, (unsigned long)debug },
- { 3, 3, __KERNEL_CS, (unsigned long)int3 },
- { 4, 3, __KERNEL_CS, (unsigned long)overflow },
- { 5, 3, __KERNEL_CS, (unsigned long)bounds },
- { 6, 0, __KERNEL_CS, (unsigned long)invalid_op },
- { 7, 0, __KERNEL_CS, (unsigned long)device_not_available },
- { 9, 0, __KERNEL_CS, (unsigned long)coprocessor_segment_overrun },
- { 10, 0, __KERNEL_CS, (unsigned long)invalid_TSS },
- { 11, 0, __KERNEL_CS, (unsigned long)segment_not_present },
- { 12, 0, __KERNEL_CS, (unsigned long)stack_segment },
- { 13, 0, __KERNEL_CS, (unsigned long)general_protection },
- { 14, 0, __KERNEL_CS, (unsigned long)page_fault },
- { 15, 0, __KERNEL_CS, (unsigned long)fixup_4gb_segment },
- { 16, 0, __KERNEL_CS, (unsigned long)coprocessor_error },
- { 17, 0, __KERNEL_CS, (unsigned long)alignment_check },
-#ifdef CONFIG_X86_MCE
- { 18, 0, __KERNEL_CS, (unsigned long)machine_check },
-#endif
- { 19, 0, __KERNEL_CS, (unsigned long)simd_coprocessor_error },
- { SYSCALL_VECTOR, 3, __KERNEL_CS, (unsigned long)system_call },
- { 0, 0, 0, 0 }
-};
-
-void __init trap_init(void)
-{
- HYPERVISOR_set_trap_table(trap_table);
-
- /*
- * default LDT is a single-entry callgate to lcall7 for iBCS
- * and a callgate to lcall27 for Solaris/x86 binaries
- */
- make_lowmem_page_readonly(&default_ldt[0]);
-
- /*
- * Should be a barrier for any external CPU state.
- */
- cpu_init();
-}
-
-void smp_trap_init(trap_info_t *trap_ctxt)
-{
- trap_info_t *t = trap_table;
-
- for (t = trap_table; t->address; t++) {
- trap_ctxt[t->vector].flags = t->flags;
- trap_ctxt[t->vector].cs = t->cs;
- trap_ctxt[t->vector].address = t->address;
- }
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/kernel/vsyscall.S
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/kernel/vsyscall.S Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,15 +0,0 @@
-#include <linux/init.h>
-
-__INITDATA
-
- .globl vsyscall_int80_start, vsyscall_int80_end
-vsyscall_int80_start:
- .incbin "arch/xen/i386/kernel/vsyscall-int80.so"
-vsyscall_int80_end:
-
- .globl vsyscall_sysenter_start, vsyscall_sysenter_end
-vsyscall_sysenter_start:
- .incbin "arch/xen/i386/kernel/vsyscall-sysenter.so"
-vsyscall_sysenter_end:
-
-__FINIT
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/mach-default/Makefile
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/mach-default/Makefile Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,12 +0,0 @@
-#
-# Makefile for the linux kernel.
-#
-
-c-obj-y := topology.o
-
-$(patsubst %.o,$(obj)/%.c,$(c-obj-y)):
- @ln -fsn $(srctree)/arch/i386/mach-default/$(notdir $@) $@
-
-obj-y += $(c-obj-y)
-
-clean-files += $(patsubst %.o,%.c,$(c-obj-y) $(c-obj-))
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/mm/Makefile
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/mm/Makefile Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,24 +0,0 @@
-#
-# Makefile for the linux i386-specific parts of the memory manager.
-#
-
-XENARCH := $(subst ",,$(CONFIG_XENARCH))
-
-CFLAGS += -Iarch/$(XENARCH)/mm
-
-obj-y := init.o pgtable.o fault.o ioremap.o hypervisor.o
-c-obj-y := extable.o mmap.o pageattr.o
-
-c-obj-$(CONFIG_DISCONTIGMEM) += discontig.o
-c-obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
-obj-$(CONFIG_HIGHMEM) += highmem.o
-c-obj-$(CONFIG_BOOT_IOREMAP) += boot_ioremap.o
-
-c-link :=
-
-$(patsubst %.o,$(obj)/%.c,$(c-obj-y) $(c-link)):
- @ln -fsn $(srctree)/arch/i386/mm/$(notdir $@) $@
-
-obj-y += $(c-obj-y)
-
-clean-files += $(patsubst %.o,%.c,$(c-obj-y) $(c-obj-) $(c-link))
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/mm/fault.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/mm/fault.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,561 +0,0 @@
-/*
- * linux/arch/i386/mm/fault.c
- *
- * Copyright (C) 1995 Linus Torvalds
- */
-
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/ptrace.h>
-#include <linux/mman.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/smp_lock.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/tty.h>
-#include <linux/vt_kern.h> /* For unblank_screen() */
-#include <linux/highmem.h>
-#include <linux/module.h>
-#include <linux/percpu.h>
-
-#include <asm/system.h>
-#include <asm/uaccess.h>
-#include <asm/desc.h>
-#include <asm/kdebug.h>
-
-extern void die(const char *,struct pt_regs *,long);
-
-DEFINE_PER_CPU(pgd_t *, cur_pgd);
-
-/*
- * Unlock any spinlocks which will prevent us from getting the
- * message out
- */
-void bust_spinlocks(int yes)
-{
- int loglevel_save = console_loglevel;
-
- if (yes) {
- oops_in_progress = 1;
- return;
- }
-#ifdef CONFIG_VT
- unblank_screen();
-#endif
- oops_in_progress = 0;
- /*
- * OK, the message is on the console. Now we call printk()
- * without oops_in_progress set so that printk will give klogd
- * a poke. Hold onto your hats...
- */
- console_loglevel = 15; /* NMI oopser may have shut the console
up */
- printk(" ");
- console_loglevel = loglevel_save;
-}
-
-/*
- * Return EIP plus the CS segment base. The segment limit is also
- * adjusted, clamped to the kernel/user address space (whichever is
- * appropriate), and returned in *eip_limit.
- *
- * The segment is checked, because it might have been changed by another
- * task between the original faulting instruction and here.
- *
- * If CS is no longer a valid code segment, or if EIP is beyond the
- * limit, or if it is a kernel address when CS is not a kernel segment,
- * then the returned value will be greater than *eip_limit.
- *
- * This is slow, but is very rarely executed.
- */
-static inline unsigned long get_segment_eip(struct pt_regs *regs,
- unsigned long *eip_limit)
-{
- unsigned long eip = regs->eip;
- unsigned seg = regs->xcs & 0xffff;
- u32 seg_ar, seg_limit, base, *desc;
-
- /* The standard kernel/user address space limit. */
- *eip_limit = (seg & 2) ? USER_DS.seg : KERNEL_DS.seg;
-
- /* Unlikely, but must come before segment checks. */
- if (unlikely((regs->eflags & VM_MASK) != 0))
- return eip + (seg << 4);
-
- /* By far the most common cases. */
- if (likely(seg == __USER_CS || seg == __KERNEL_CS))
- return eip;
-
- /* Check the segment exists, is within the current LDT/GDT size,
- that kernel/user (ring 0..3) has the appropriate privilege,
- that it's a code segment, and get the limit. */
- __asm__ ("larl %3,%0; lsll %3,%1"
- : "=&r" (seg_ar), "=r" (seg_limit) : "0" (0), "rm" (seg));
- if ((~seg_ar & 0x9800) || eip > seg_limit) {
- *eip_limit = 0;
- return 1; /* So that returned eip > *eip_limit. */
- }
-
- /* Get the GDT/LDT descriptor base.
- When you look for races in this code remember that
- LDT and other horrors are only used in user space. */
- if (seg & (1<<2)) {
- /* Must lock the LDT while reading it. */
- down(¤t->mm->context.sem);
- desc = current->mm->context.ldt;
- desc = (void *)desc + (seg & ~7);
- } else {
- /* Must disable preemption while reading the GDT. */
- desc = (u32 *)get_cpu_gdt_table(get_cpu());
- desc = (void *)desc + (seg & ~7);
- }
-
- /* Decode the code segment base from the descriptor */
- base = get_desc_base((unsigned long *)desc);
-
- if (seg & (1<<2)) {
- up(¤t->mm->context.sem);
- } else
- put_cpu();
-
- /* Adjust EIP and segment limit, and clamp at the kernel limit.
- It's legitimate for segments to wrap at 0xffffffff. */
- seg_limit += base;
- if (seg_limit < *eip_limit && seg_limit >= base)
- *eip_limit = seg_limit;
- return eip + base;
-}
-
-/*
- * Sometimes AMD Athlon/Opteron CPUs report invalid exceptions on prefetch.
- * Check that here and ignore it.
- */
-static int __is_prefetch(struct pt_regs *regs, unsigned long addr)
-{
- unsigned long limit;
- unsigned long instr = get_segment_eip (regs, &limit);
- int scan_more = 1;
- int prefetch = 0;
- int i;
-
- for (i = 0; scan_more && i < 15; i++) {
- unsigned char opcode;
- unsigned char instr_hi;
- unsigned char instr_lo;
-
- if (instr > limit)
- break;
- if (__get_user(opcode, (unsigned char *) instr))
- break;
-
- instr_hi = opcode & 0xf0;
- instr_lo = opcode & 0x0f;
- instr++;
-
- switch (instr_hi) {
- case 0x20:
- case 0x30:
- /* Values 0x26,0x2E,0x36,0x3E are valid x86 prefixes. */
- scan_more = ((instr_lo & 7) == 0x6);
- break;
-
- case 0x60:
- /* 0x64 thru 0x67 are valid prefixes in all modes. */
- scan_more = (instr_lo & 0xC) == 0x4;
- break;
- case 0xF0:
- /* 0xF0, 0xF2, and 0xF3 are valid prefixes */
- scan_more = !instr_lo || (instr_lo>>1) == 1;
- break;
- case 0x00:
- /* Prefetch instruction is 0x0F0D or 0x0F18 */
- scan_more = 0;
- if (instr > limit)
- break;
- if (__get_user(opcode, (unsigned char *) instr))
- break;
- prefetch = (instr_lo == 0xF) &&
- (opcode == 0x0D || opcode == 0x18);
- break;
- default:
- scan_more = 0;
- break;
- }
- }
- return prefetch;
-}
-
-static inline int is_prefetch(struct pt_regs *regs, unsigned long addr,
- unsigned long error_code)
-{
- if (unlikely(boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
- boot_cpu_data.x86 >= 6)) {
- /* Catch an obscure case of prefetch inside an NX page. */
- if (nx_enabled && (error_code & 16))
- return 0;
- return __is_prefetch(regs, addr);
- }
- return 0;
-}
-
-fastcall void do_invalid_op(struct pt_regs *, unsigned long);
-
-/*
- * This routine handles page faults. It determines the address,
- * and the problem, and then passes it off to one of the appropriate
- * routines.
- *
- * error_code:
- * bit 0 == 0 means no page found, 1 means protection fault
- * bit 1 == 0 means read, 1 means write
- * bit 2 == 0 means kernel, 1 means user-mode
- */
-fastcall void do_page_fault(struct pt_regs *regs, unsigned long error_code,
- unsigned long address)
-{
- struct task_struct *tsk;
- struct mm_struct *mm;
- struct vm_area_struct * vma;
- unsigned long page;
- int write;
- siginfo_t info;
-
- /* Set the "privileged fault" bit to something sane. */
- error_code &= 3;
- error_code |= (regs->xcs & 2) << 1;
- if (regs->eflags & X86_EFLAGS_VM)
- error_code |= 4;
-
- if (notify_die(DIE_PAGE_FAULT, "page fault", regs, error_code, 14,
- SIGSEGV) == NOTIFY_STOP)
- return;
-#if 0
- /* It's safe to allow irq's after cr2 has been saved */
- if (regs->eflags & (X86_EFLAGS_IF|VM_MASK))
- local_irq_enable();
-#endif
-
- tsk = current;
-
- info.si_code = SEGV_MAPERR;
-
- /*
- * We fault-in kernel-space virtual memory on-demand. The
- * 'reference' page table is init_mm.pgd.
- *
- * NOTE! We MUST NOT take any locks for this case. We may
- * be in an interrupt or a critical region, and should
- * only copy the information from the master page table,
- * nothing more.
- *
- * This verifies that the fault happens in kernel space
- * (error_code & 4) == 0, and that the fault was not a
- * protection error (error_code & 1) == 0.
- */
- if (unlikely(address >= TASK_SIZE)) {
- if (!(error_code & 5))
- goto vmalloc_fault;
- /*
- * Don't take the mm semaphore here. If we fixup a prefetch
- * fault we could otherwise deadlock.
- */
- goto bad_area_nosemaphore;
- }
-
- mm = tsk->mm;
-
- /*
- * If we're in an interrupt, have no user context or are running in an
- * atomic region then we must not take the fault..
- */
- if (in_atomic() || !mm)
- goto bad_area_nosemaphore;
-
- /* When running in the kernel we expect faults to occur only to
- * addresses in user space. All other faults represent errors in the
- * kernel and should generate an OOPS. Unfortunatly, in the case of an
- * erroneous fault occuring in a code path which already holds mmap_sem
- * we will deadlock attempting to validate the fault against the
- * address space. Luckily the kernel only validly references user
- * space from well defined areas of code, which are listed in the
- * exceptions table.
- *
- * As the vast majority of faults will be valid we will only perform
- * the source reference check when there is a possibilty of a deadlock.
- * Attempt to lock the address space, if we cannot we then validate the
- * source. If this is invalid we can skip the address space check,
- * thus avoiding the deadlock.
- */
- if (!down_read_trylock(&mm->mmap_sem)) {
- if ((error_code & 4) == 0 &&
- !search_exception_tables(regs->eip))
- goto bad_area_nosemaphore;
- down_read(&mm->mmap_sem);
- }
-
- vma = find_vma(mm, address);
- if (!vma)
- goto bad_area;
- if (vma->vm_start <= address)
- goto good_area;
- if (!(vma->vm_flags & VM_GROWSDOWN))
- goto bad_area;
- if (error_code & 4) {
- /*
- * accessing the stack below %esp is always a bug.
- * The "+ 32" is there due to some instructions (like
- * pusha) doing post-decrement on the stack and that
- * doesn't show up until later..
- */
- if (address + 32 < regs->esp)
- goto bad_area;
- }
- if (expand_stack(vma, address))
- goto bad_area;
-/*
- * Ok, we have a good vm_area for this memory access, so
- * we can handle it..
- */
-good_area:
- info.si_code = SEGV_ACCERR;
- write = 0;
- switch (error_code & 3) {
- default: /* 3: write, present */
-#ifdef TEST_VERIFY_AREA
- if (regs->cs == KERNEL_CS)
- printk("WP fault at %08lx\n", regs->eip);
-#endif
- /* fall through */
- case 2: /* write, not present */
- if (!(vma->vm_flags & VM_WRITE))
- goto bad_area;
- write++;
- break;
- case 1: /* read, present */
- goto bad_area;
- case 0: /* read, not present */
- if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
- goto bad_area;
- }
-
- survive:
- /*
- * If for any reason at all we couldn't handle the fault,
- * make sure we exit gracefully rather than endlessly redo
- * the fault.
- */
- switch (handle_mm_fault(mm, vma, address, write)) {
- case VM_FAULT_MINOR:
- tsk->min_flt++;
- break;
- case VM_FAULT_MAJOR:
- tsk->maj_flt++;
- break;
- case VM_FAULT_SIGBUS:
- goto do_sigbus;
- case VM_FAULT_OOM:
- goto out_of_memory;
- default:
- BUG();
- }
-
- /*
- * Did it hit the DOS screen memory VA from vm86 mode?
- */
- if (regs->eflags & VM_MASK) {
- unsigned long bit = (address - 0xA0000) >> PAGE_SHIFT;
- if (bit < 32)
- tsk->thread.screen_bitmap |= 1 << bit;
- }
- up_read(&mm->mmap_sem);
- return;
-
-/*
- * Something tried to access memory that isn't in our memory map..
- * Fix it, but check if it's kernel or user first..
- */
-bad_area:
- up_read(&mm->mmap_sem);
-
-bad_area_nosemaphore:
- /* User mode accesses just cause a SIGSEGV */
- if (error_code & 4) {
- /*
- * Valid to do another page fault here because this one came
- * from user space.
- */
- if (is_prefetch(regs, address, error_code))
- return;
-
- tsk->thread.cr2 = address;
- /* Kernel addresses are always protection faults */
- tsk->thread.error_code = error_code | (address >= TASK_SIZE);
- tsk->thread.trap_no = 14;
- info.si_signo = SIGSEGV;
- info.si_errno = 0;
- /* info.si_code has been set above */
- info.si_addr = (void __user *)address;
- force_sig_info(SIGSEGV, &info, tsk);
- return;
- }
-
-#ifdef CONFIG_X86_F00F_BUG
- /*
- * Pentium F0 0F C7 C8 bug workaround.
- */
- if (boot_cpu_data.f00f_bug) {
- unsigned long nr;
-
- nr = (address - idt_descr.address) >> 3;
-
- if (nr == 6) {
- do_invalid_op(regs, 0);
- return;
- }
- }
-#endif
-
-no_context:
- /* Are we prepared to handle this kernel fault? */
- if (fixup_exception(regs))
- return;
-
- /*
- * Valid to do another page fault here, because if this fault
- * had been triggered by is_prefetch fixup_exception would have
- * handled it.
- */
- if (is_prefetch(regs, address, error_code))
- return;
-
-/*
- * Oops. The kernel tried to access some bad page. We'll have to
- * terminate things with extreme prejudice.
- */
-
- bust_spinlocks(1);
-
-#ifdef CONFIG_X86_PAE
- if (error_code & 16) {
- pte_t *pte = lookup_address(address);
-
- if (pte && pte_present(*pte) && !pte_exec_kernel(*pte))
- printk(KERN_CRIT "kernel tried to execute NX-protected
page - exploit attempt? (uid: %d)\n", current->uid);
- }
-#endif
- if (address < PAGE_SIZE)
- printk(KERN_ALERT "Unable to handle kernel NULL pointer
dereference");
- else
- printk(KERN_ALERT "Unable to handle kernel paging request");
- printk(" at virtual address %08lx\n",address);
- printk(KERN_ALERT " printing eip:\n");
- printk("%08lx\n", regs->eip);
- page = ((unsigned long *) per_cpu(cur_pgd, smp_processor_id()))
- [address >> 22];
- printk(KERN_ALERT "*pde = ma %08lx pa %08lx\n", page,
- machine_to_phys(page));
- /*
- * We must not directly access the pte in the highpte
- * case, the page table might be allocated in highmem.
- * And lets rather not kmap-atomic the pte, just in case
- * it's allocated already.
- */
-#ifndef CONFIG_HIGHPTE
- if (page & 1) {
- page &= PAGE_MASK;
- address &= 0x003ff000;
- page = machine_to_phys(page);
- page = ((unsigned long *) __va(page))[address >> PAGE_SHIFT];
- printk(KERN_ALERT "*pte = ma %08lx pa %08lx\n", page,
- machine_to_phys(page));
- }
-#endif
- die("Oops", regs, error_code);
- bust_spinlocks(0);
- do_exit(SIGKILL);
-
-/*
- * We ran out of memory, or some other thing happened to us that made
- * us unable to handle the page fault gracefully.
- */
-out_of_memory:
- up_read(&mm->mmap_sem);
- if (tsk->pid == 1) {
- yield();
- down_read(&mm->mmap_sem);
- goto survive;
- }
- printk("VM: killing process %s\n", tsk->comm);
- if (error_code & 4)
- do_exit(SIGKILL);
- goto no_context;
-
-do_sigbus:
- up_read(&mm->mmap_sem);
-
- /* Kernel mode? Handle exceptions or die */
- if (!(error_code & 4))
- goto no_context;
-
- /* User space => ok to do another page fault */
- if (is_prefetch(regs, address, error_code))
- return;
-
- tsk->thread.cr2 = address;
- tsk->thread.error_code = error_code;
- tsk->thread.trap_no = 14;
- info.si_signo = SIGBUS;
- info.si_errno = 0;
- info.si_code = BUS_ADRERR;
- info.si_addr = (void __user *)address;
- force_sig_info(SIGBUS, &info, tsk);
- return;
-
-vmalloc_fault:
- {
- /*
- * Synchronize this task's top level page-table
- * with the 'reference' page table.
- *
- * Do _not_ use "tsk" here. We might be inside
- * an interrupt in the middle of a task switch..
- */
- int index = pgd_index(address);
- pgd_t *pgd, *pgd_k;
- pud_t *pud, *pud_k;
- pmd_t *pmd, *pmd_k;
- pte_t *pte_k;
-
- pgd = index + per_cpu(cur_pgd, smp_processor_id());
- pgd_k = init_mm.pgd + index;
-
- if (!pgd_present(*pgd_k))
- goto no_context;
-
- /*
- * set_pgd(pgd, *pgd_k); here would be useless on PAE
- * and redundant with the set_pmd() on non-PAE. As would
- * set_pud.
- */
-
- pud = pud_offset(pgd, address);
- pud_k = pud_offset(pgd_k, address);
- if (!pud_present(*pud_k))
- goto no_context;
-
- pmd = pmd_offset(pud, address);
- pmd_k = pmd_offset(pud_k, address);
- if (!pmd_present(*pmd_k))
- goto no_context;
- set_pmd(pmd, *pmd_k);
-
- pte_k = pte_offset_kernel(pmd_k, address);
- if (!pte_present(*pte_k))
- goto no_context;
- return;
- }
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/mm/highmem.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/mm/highmem.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,100 +0,0 @@
-#include <linux/highmem.h>
-
-void *kmap(struct page *page)
-{
- might_sleep();
- if (!PageHighMem(page))
- return page_address(page);
- return kmap_high(page);
-}
-
-void kunmap(struct page *page)
-{
- if (in_interrupt())
- BUG();
- if (!PageHighMem(page))
- return;
- kunmap_high(page);
-}
-
-/*
- * kmap_atomic/kunmap_atomic is significantly faster than kmap/kunmap because
- * no global lock is needed and because the kmap code must perform a global TLB
- * invalidation when the kmap pool wraps.
- *
- * However when holding an atomic kmap is is not legal to sleep, so atomic
- * kmaps are appropriate for short, tight code paths only.
- */
-static void *__kmap_atomic(struct page *page, enum km_type type, pgprot_t prot)
-{
- enum fixed_addresses idx;
- unsigned long vaddr;
-
- /* even !CONFIG_PREEMPT needs this, for in_atomic in do_page_fault */
- inc_preempt_count();
- if (!PageHighMem(page))
- return page_address(page);
-
- idx = type + KM_TYPE_NR*smp_processor_id();
- vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
-#ifdef CONFIG_DEBUG_HIGHMEM
- if (!pte_none(*(kmap_pte-idx)))
- BUG();
-#endif
- set_pte(kmap_pte-idx, mk_pte(page, prot));
- __flush_tlb_one(vaddr);
-
- return (void*) vaddr;
-}
-
-void *kmap_atomic(struct page *page, enum km_type type)
-{
- return __kmap_atomic(page, type, kmap_prot);
-}
-
-/* Same as kmap_atomic but with PAGE_KERNEL_RO page protection. */
-void *kmap_atomic_pte(struct page *page, enum km_type type)
-{
- return __kmap_atomic(page, type, PAGE_KERNEL_RO);
-}
-
-void kunmap_atomic(void *kvaddr, enum km_type type)
-{
-#ifdef CONFIG_DEBUG_HIGHMEM
- unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK;
- enum fixed_addresses idx = type + KM_TYPE_NR*smp_processor_id();
-
- if (vaddr < FIXADDR_START) { // FIXME
- dec_preempt_count();
- preempt_check_resched();
- return;
- }
-
- if (vaddr != __fix_to_virt(FIX_KMAP_BEGIN+idx))
- BUG();
-
- /*
- * force other mappings to Oops if they'll try to access
- * this pte without first remap it
- */
- pte_clear(kmap_pte-idx);
- __flush_tlb_one(vaddr);
-#endif
-
- dec_preempt_count();
- preempt_check_resched();
-}
-
-struct page *kmap_atomic_to_page(void *ptr)
-{
- unsigned long idx, vaddr = (unsigned long)ptr;
- pte_t *pte;
-
- if (vaddr < FIXADDR_START)
- return virt_to_page(ptr);
-
- idx = virt_to_fix(vaddr);
- pte = kmap_pte - (idx - FIX_KMAP_BEGIN);
- return pte_page(*pte);
-}
-
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/mm/hypervisor.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/mm/hypervisor.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,346 +0,0 @@
-/******************************************************************************
- * mm/hypervisor.c
- *
- * Update page tables via the hypervisor.
- *
- * Copyright (c) 2002-2004, K A Fraser
- *
- * This file may be distributed separately from the Linux kernel, or
- * incorporated into other software packages, subject to the following license:
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this source file (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use, copy, modify,
- * merge, publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-#include <linux/config.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/vmalloc.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm-xen/hypervisor.h>
-#include <asm-xen/balloon.h>
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-#include <linux/percpu.h>
-#include <asm/tlbflush.h>
-#endif
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
-#define pte_offset_kernel pte_offset
-#define pud_t pgd_t
-#define pud_offset(d, va) d
-#elif defined(CONFIG_X86_64)
-#define pmd_val_ma(v) (v).pmd
-#else
-#define pmd_val_ma(v) (v).pud.pgd.pgd
-#endif
-
-#ifndef CONFIG_XEN_SHADOW_MODE
-void xen_l1_entry_update(pte_t *ptr, unsigned long val)
-{
- mmu_update_t u;
- u.ptr = virt_to_machine(ptr);
- u.val = val;
- BUG_ON(HYPERVISOR_mmu_update(&u, 1, NULL, DOMID_SELF) < 0);
-}
-
-void xen_l2_entry_update(pmd_t *ptr, pmd_t val)
-{
- mmu_update_t u;
- u.ptr = virt_to_machine(ptr);
- u.val = pmd_val_ma(val);
- BUG_ON(HYPERVISOR_mmu_update(&u, 1, NULL, DOMID_SELF) < 0);
-}
-
-#ifdef CONFIG_X86_64
-void xen_l3_entry_update(pud_t *ptr, pud_t val)
-{
- mmu_update_t u;
- u.ptr = virt_to_machine(ptr);
- u.val = val.pud;
- BUG_ON(HYPERVISOR_mmu_update(&u, 1, NULL, DOMID_SELF) < 0);
-}
-
-void xen_l4_entry_update(pgd_t *ptr, pgd_t val)
-{
- mmu_update_t u;
- u.ptr = virt_to_machine(ptr);
- u.val = val.pgd;
- BUG_ON(HYPERVISOR_mmu_update(&u, 1, NULL, DOMID_SELF) < 0);
-}
-#endif /* CONFIG_X86_64 */
-#endif /* CONFIG_XEN_SHADOW_MODE */
-
-void xen_machphys_update(unsigned long mfn, unsigned long pfn)
-{
- mmu_update_t u;
- u.ptr = (mfn << PAGE_SHIFT) | MMU_MACHPHYS_UPDATE;
- u.val = pfn;
- BUG_ON(HYPERVISOR_mmu_update(&u, 1, NULL, DOMID_SELF) < 0);
-}
-
-void xen_pt_switch(unsigned long ptr)
-{
- struct mmuext_op op;
- op.cmd = MMUEXT_NEW_BASEPTR;
- op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
-}
-
-void xen_new_user_pt(unsigned long ptr)
-{
- struct mmuext_op op;
- op.cmd = MMUEXT_NEW_USER_BASEPTR;
- op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
-}
-
-void xen_tlb_flush(void)
-{
- struct mmuext_op op;
- op.cmd = MMUEXT_TLB_FLUSH_LOCAL;
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
-}
-
-void xen_invlpg(unsigned long ptr)
-{
- struct mmuext_op op;
- op.cmd = MMUEXT_INVLPG_LOCAL;
- op.linear_addr = ptr & PAGE_MASK;
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
-}
-
-#ifdef CONFIG_SMP
-
-void xen_tlb_flush_all(void)
-{
- struct mmuext_op op;
- op.cmd = MMUEXT_TLB_FLUSH_ALL;
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
-}
-
-void xen_tlb_flush_mask(cpumask_t *mask)
-{
- struct mmuext_op op;
- if ( cpus_empty(*mask) )
- return;
- op.cmd = MMUEXT_TLB_FLUSH_MULTI;
- op.vcpumask = mask->bits;
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
-}
-
-void xen_invlpg_all(unsigned long ptr)
-{
- struct mmuext_op op;
- op.cmd = MMUEXT_INVLPG_ALL;
- op.linear_addr = ptr & PAGE_MASK;
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
-}
-
-void xen_invlpg_mask(cpumask_t *mask, unsigned long ptr)
-{
- struct mmuext_op op;
- if ( cpus_empty(*mask) )
- return;
- op.cmd = MMUEXT_INVLPG_MULTI;
- op.vcpumask = mask->bits;
- op.linear_addr = ptr & PAGE_MASK;
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
-}
-
-#endif /* CONFIG_SMP */
-
-#ifndef CONFIG_XEN_SHADOW_MODE
-void xen_pgd_pin(unsigned long ptr)
-{
- struct mmuext_op op;
-#ifdef CONFIG_X86_64
- op.cmd = MMUEXT_PIN_L4_TABLE;
-#else
- op.cmd = MMUEXT_PIN_L2_TABLE;
-#endif
- op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
-}
-
-void xen_pgd_unpin(unsigned long ptr)
-{
- struct mmuext_op op;
- op.cmd = MMUEXT_UNPIN_TABLE;
- op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
-}
-
-void xen_pte_pin(unsigned long ptr)
-{
- struct mmuext_op op;
- op.cmd = MMUEXT_PIN_L1_TABLE;
- op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
-}
-
-void xen_pte_unpin(unsigned long ptr)
-{
- struct mmuext_op op;
- op.cmd = MMUEXT_UNPIN_TABLE;
- op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
-}
-
-#ifdef CONFIG_X86_64
-void xen_pud_pin(unsigned long ptr)
-{
- struct mmuext_op op;
- op.cmd = MMUEXT_PIN_L3_TABLE;
- op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
-}
-
-void xen_pud_unpin(unsigned long ptr)
-{
- struct mmuext_op op;
- op.cmd = MMUEXT_UNPIN_TABLE;
- op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
-}
-
-void xen_pmd_pin(unsigned long ptr)
-{
- struct mmuext_op op;
- op.cmd = MMUEXT_PIN_L2_TABLE;
- op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
-}
-
-void xen_pmd_unpin(unsigned long ptr)
-{
- struct mmuext_op op;
- op.cmd = MMUEXT_UNPIN_TABLE;
- op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
-}
-#endif /* CONFIG_X86_64 */
-#endif /* CONFIG_XEN_SHADOW_MODE */
-
-void xen_set_ldt(unsigned long ptr, unsigned long len)
-{
- struct mmuext_op op;
- op.cmd = MMUEXT_SET_LDT;
- op.linear_addr = ptr;
- op.nr_ents = len;
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
-}
-
-void xen_contig_memory(unsigned long vstart, unsigned int order)
-{
- /*
- * Ensure multi-page extents are contiguous in machine memory. This code
- * could be cleaned up some, and the number of hypercalls reduced.
- */
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *pte;
- unsigned long mfn, i, flags;
-
- scrub_pages(vstart, 1 << order);
-
- balloon_lock(flags);
-
- /* 1. Zap current PTEs, giving away the underlying pages. */
- for (i = 0; i < (1<<order); i++) {
- pgd = pgd_offset_k(vstart + (i*PAGE_SIZE));
- pud = pud_offset(pgd, (vstart + (i*PAGE_SIZE)));
- pmd = pmd_offset(pud, (vstart + (i*PAGE_SIZE)));
- pte = pte_offset_kernel(pmd, (vstart + (i*PAGE_SIZE)));
- mfn = pte_mfn(*pte);
- HYPERVISOR_update_va_mapping(
- vstart + (i*PAGE_SIZE), __pte_ma(0), 0);
- phys_to_machine_mapping[(__pa(vstart)>>PAGE_SHIFT)+i] =
- INVALID_P2M_ENTRY;
- BUG_ON(HYPERVISOR_dom_mem_op(
- MEMOP_decrease_reservation, &mfn, 1, 0) != 1);
- }
-
- /* 2. Get a new contiguous memory extent. */
- BUG_ON(HYPERVISOR_dom_mem_op(
- MEMOP_increase_reservation, &mfn, 1, order) != 1);
-
- /* 3. Map the new extent in place of old pages. */
- for (i = 0; i < (1<<order); i++) {
- HYPERVISOR_update_va_mapping(
- vstart + (i*PAGE_SIZE),
- __pte_ma(((mfn+i)<<PAGE_SHIFT)|__PAGE_KERNEL), 0);
- xen_machphys_update(mfn+i, (__pa(vstart)>>PAGE_SHIFT)+i);
- phys_to_machine_mapping[(__pa(vstart)>>PAGE_SHIFT)+i] = mfn+i;
- }
-
- flush_tlb_all();
-
- balloon_unlock(flags);
-}
-
-#ifdef CONFIG_XEN_PHYSDEV_ACCESS
-
-unsigned long allocate_empty_lowmem_region(unsigned long pages)
-{
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *pte;
- unsigned long *pfn_array;
- unsigned long vstart;
- unsigned long i;
- unsigned int order = get_order(pages*PAGE_SIZE);
-
- vstart = __get_free_pages(GFP_KERNEL, order);
- if ( vstart == 0 )
- return 0UL;
-
- scrub_pages(vstart, 1 << order);
-
- pfn_array = vmalloc((1<<order) * sizeof(*pfn_array));
- if ( pfn_array == NULL )
- BUG();
-
- for ( i = 0; i < (1<<order); i++ )
- {
- pgd = pgd_offset_k( (vstart + (i*PAGE_SIZE)));
- pud = pud_offset(pgd, (vstart + (i*PAGE_SIZE)));
- pmd = pmd_offset(pud, (vstart + (i*PAGE_SIZE)));
- pte = pte_offset_kernel(pmd, (vstart + (i*PAGE_SIZE)));
- pfn_array[i] = pte_mfn(*pte);
-#ifdef CONFIG_X86_64
- xen_l1_entry_update(pte, 0);
-#else
- HYPERVISOR_update_va_mapping(vstart + (i*PAGE_SIZE), __pte_ma(0), 0);
-#endif
- phys_to_machine_mapping[(__pa(vstart)>>PAGE_SHIFT)+i] =
- INVALID_P2M_ENTRY;
- }
-
- flush_tlb_all();
-
- balloon_put_pages(pfn_array, 1 << order);
-
- vfree(pfn_array);
-
- return vstart;
-}
-
-#endif /* CONFIG_XEN_PHYSDEV_ACCESS */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/mm/init.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/mm/init.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,795 +0,0 @@
-/*
- * linux/arch/i386/mm/init.c
- *
- * Copyright (C) 1995 Linus Torvalds
- *
- * Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/ptrace.h>
-#include <linux/mman.h>
-#include <linux/mm.h>
-#include <linux/hugetlb.h>
-#include <linux/swap.h>
-#include <linux/smp.h>
-#include <linux/init.h>
-#include <linux/highmem.h>
-#include <linux/pagemap.h>
-#include <linux/bootmem.h>
-#include <linux/slab.h>
-#include <linux/proc_fs.h>
-#include <linux/efi.h>
-
-#include <asm/processor.h>
-#include <asm/system.h>
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-#include <asm/dma.h>
-#include <asm/fixmap.h>
-#include <asm/e820.h>
-#include <asm/apic.h>
-#include <asm/tlb.h>
-#include <asm/tlbflush.h>
-#include <asm/sections.h>
-#include <asm-xen/hypervisor.h>
-
-unsigned int __VMALLOC_RESERVE = 128 << 20;
-
-DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
-unsigned long highstart_pfn, highend_pfn;
-
-static int noinline do_test_wp_bit(void);
-
-/*
- * Creates a middle page table and puts a pointer to it in the
- * given global directory entry. This only returns the gd entry
- * in non-PAE compilation mode, since the middle layer is folded.
- */
-static pmd_t * __init one_md_table_init(pgd_t *pgd)
-{
- pud_t *pud;
- pmd_t *pmd_table;
-
-#ifdef CONFIG_X86_PAE
- pmd_table = (pmd_t *) alloc_bootmem_low_pages(PAGE_SIZE);
- set_pgd(pgd, __pgd(__pa(pmd_table) | _PAGE_PRESENT));
- pud = pud_offset(pgd, 0);
- if (pmd_table != pmd_offset(pud, 0))
- BUG();
-#else
- pud = pud_offset(pgd, 0);
- pmd_table = pmd_offset(pud, 0);
-#endif
-
- return pmd_table;
-}
-
-/*
- * Create a page table and place a pointer to it in a middle page
- * directory entry.
- */
-static pte_t * __init one_page_table_init(pmd_t *pmd)
-{
- if (pmd_none(*pmd)) {
- pte_t *page_table = (pte_t *)
alloc_bootmem_low_pages(PAGE_SIZE);
- make_page_readonly(page_table);
- set_pmd(pmd, __pmd(__pa(page_table) | _PAGE_TABLE));
- if (page_table != pte_offset_kernel(pmd, 0))
- BUG();
-
- return page_table;
- }
-
- return pte_offset_kernel(pmd, 0);
-}
-
-/*
- * This function initializes a certain range of kernel virtual memory
- * with new bootmem page tables, everywhere page tables are missing in
- * the given range.
- */
-
-/*
- * NOTE: The pagetables are allocated contiguous on the physical space
- * so we can cache the place of the first one and move around without
- * checking the pgd every time.
- */
-static void __init page_table_range_init (unsigned long start, unsigned long
end, pgd_t *pgd_base)
-{
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- int pgd_idx, pmd_idx;
- unsigned long vaddr;
-
- vaddr = start;
- pgd_idx = pgd_index(vaddr);
- pmd_idx = pmd_index(vaddr);
- pgd = pgd_base + pgd_idx;
-
- for ( ; (pgd_idx < PTRS_PER_PGD_NO_HV) && (vaddr != end); pgd++,
pgd_idx++) {
- if (pgd_none(*pgd))
- one_md_table_init(pgd);
- pud = pud_offset(pgd, vaddr);
- pmd = pmd_offset(pud, vaddr);
- for (; (pmd_idx < PTRS_PER_PMD) && (vaddr != end); pmd++,
pmd_idx++) {
- if (pmd_none(*pmd))
- one_page_table_init(pmd);
-
- vaddr += PMD_SIZE;
- }
- pmd_idx = 0;
- }
-}
-
-static inline int is_kernel_text(unsigned long addr)
-{
- if (addr >= PAGE_OFFSET && addr <= (unsigned long)__init_end)
- return 1;
- return 0;
-}
-
-/*
- * This maps the physical memory to kernel virtual address space, a total
- * of max_low_pfn pages, by creating page tables starting from address
- * PAGE_OFFSET.
- */
-static void __init kernel_physical_mapping_init(pgd_t *pgd_base)
-{
- unsigned long pfn;
- pgd_t *pgd;
- pmd_t *pmd;
- pte_t *pte;
- int pgd_idx, pmd_idx, pte_ofs;
-
- unsigned long max_ram_pfn = xen_start_info.nr_pages;
- if (max_ram_pfn > max_low_pfn)
- max_ram_pfn = max_low_pfn;
-
- pgd_idx = pgd_index(PAGE_OFFSET);
- pgd = pgd_base + pgd_idx;
- pfn = 0;
- pmd_idx = pmd_index(PAGE_OFFSET);
- pte_ofs = pte_index(PAGE_OFFSET);
-
- for (; pgd_idx < PTRS_PER_PGD_NO_HV; pgd++, pgd_idx++) {
- pmd = one_md_table_init(pgd);
- if (pfn >= max_low_pfn)
- continue;
- pmd += pmd_idx;
- for (; pmd_idx < PTRS_PER_PMD && pfn < max_low_pfn; pmd++,
pmd_idx++) {
- unsigned int address = pfn * PAGE_SIZE + PAGE_OFFSET;
-
- /* Map with big pages if possible, otherwise create
normal page tables. */
- if (cpu_has_pse) {
- unsigned int address2 = (pfn + PTRS_PER_PTE -
1) * PAGE_SIZE + PAGE_OFFSET + PAGE_SIZE-1;
-
- if (is_kernel_text(address) ||
is_kernel_text(address2))
- set_pmd(pmd, pfn_pmd(pfn,
PAGE_KERNEL_LARGE_EXEC));
- else
- set_pmd(pmd, pfn_pmd(pfn,
PAGE_KERNEL_LARGE));
- pfn += PTRS_PER_PTE;
- } else {
- pte = one_page_table_init(pmd);
-
- pte += pte_ofs;
- for (; pte_ofs < PTRS_PER_PTE && pfn <
max_low_pfn; pte++, pfn++, pte_ofs++) {
- /* XEN: Only map initial RAM
allocation. */
- if ((pfn >= max_ram_pfn) ||
pte_present(*pte))
- continue;
- if (is_kernel_text(address))
- set_pte(pte,
pfn_pte(pfn, PAGE_KERNEL_EXEC));
- else
- set_pte(pte,
pfn_pte(pfn, PAGE_KERNEL));
- }
- pte_ofs = 0;
- }
- }
- pmd_idx = 0;
- }
-}
-
-static inline int page_kills_ppro(unsigned long pagenr)
-{
- if (pagenr >= 0x70000 && pagenr <= 0x7003F)
- return 1;
- return 0;
-}
-
-extern int is_available_memory(efi_memory_desc_t *);
-
-static inline int page_is_ram(unsigned long pagenr)
-{
- int i;
- unsigned long addr, end;
-
- if (efi_enabled) {
- efi_memory_desc_t *md;
-
- for (i = 0; i < memmap.nr_map; i++) {
- md = &memmap.map[i];
- if (!is_available_memory(md))
- continue;
- addr = (md->phys_addr+PAGE_SIZE-1) >> PAGE_SHIFT;
- end = (md->phys_addr + (md->num_pages <<
EFI_PAGE_SHIFT)) >> PAGE_SHIFT;
-
- if ((pagenr >= addr) && (pagenr < end))
- return 1;
- }
- return 0;
- }
-
- for (i = 0; i < e820.nr_map; i++) {
-
- if (e820.map[i].type != E820_RAM) /* not usable memory */
- continue;
- /*
- * !!!FIXME!!! Some BIOSen report areas as RAM that
- * are not. Notably the 640->1Mb area. We need a sanity
- * check here.
- */
- addr = (e820.map[i].addr+PAGE_SIZE-1) >> PAGE_SHIFT;
- end = (e820.map[i].addr+e820.map[i].size) >> PAGE_SHIFT;
- if ((pagenr >= addr) && (pagenr < end))
- return 1;
- }
- return 0;
-}
-
-#ifdef CONFIG_HIGHMEM
-pte_t *kmap_pte;
-pgprot_t kmap_prot;
-
-EXPORT_SYMBOL(kmap_prot);
-EXPORT_SYMBOL(kmap_pte);
-
-#define kmap_get_fixmap_pte(vaddr) \
- pte_offset_kernel(pmd_offset(pud_offset(pgd_offset_k(vaddr), vaddr),
(vaddr)), (vaddr))
-
-void __init kmap_init(void)
-{
- unsigned long kmap_vstart;
-
- /* cache the first kmap pte */
- kmap_vstart = __fix_to_virt(FIX_KMAP_BEGIN);
- kmap_pte = kmap_get_fixmap_pte(kmap_vstart);
-
- kmap_prot = PAGE_KERNEL;
-}
-
-void __init permanent_kmaps_init(pgd_t *pgd_base)
-{
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *pte;
- unsigned long vaddr;
-
- vaddr = PKMAP_BASE;
- page_table_range_init(vaddr, vaddr + PAGE_SIZE*LAST_PKMAP, pgd_base);
-
- pgd = swapper_pg_dir + pgd_index(vaddr);
- pud = pud_offset(pgd, vaddr);
- pmd = pmd_offset(pud, vaddr);
- pte = pte_offset_kernel(pmd, vaddr);
- pkmap_page_table = pte;
-}
-
-void __init one_highpage_init(struct page *page, int pfn, int bad_ppro)
-{
- if (page_is_ram(pfn) && !(bad_ppro && page_kills_ppro(pfn))) {
- ClearPageReserved(page);
- set_bit(PG_highmem, &page->flags);
- set_page_count(page, 1);
- if (pfn < xen_start_info.nr_pages)
- __free_page(page);
- totalhigh_pages++;
- } else
- SetPageReserved(page);
-}
-
-#ifndef CONFIG_DISCONTIGMEM
-void __init set_highmem_pages_init(int bad_ppro)
-{
- int pfn;
- for (pfn = highstart_pfn; pfn < highend_pfn; pfn++)
- one_highpage_init(pfn_to_page(pfn), pfn, bad_ppro);
- totalram_pages += totalhigh_pages;
-}
-#else
-extern void set_highmem_pages_init(int);
-#endif /* !CONFIG_DISCONTIGMEM */
-
-#else
-#define kmap_init() do { } while (0)
-#define permanent_kmaps_init(pgd_base) do { } while (0)
-#define set_highmem_pages_init(bad_ppro) do { } while (0)
-#endif /* CONFIG_HIGHMEM */
-
-unsigned long long __PAGE_KERNEL = _PAGE_KERNEL;
-unsigned long long __PAGE_KERNEL_EXEC = _PAGE_KERNEL_EXEC;
-
-#ifndef CONFIG_DISCONTIGMEM
-#define remap_numa_kva() do {} while (0)
-#else
-extern void __init remap_numa_kva(void);
-#endif
-
-static void __init pagetable_init (void)
-{
- unsigned long vaddr;
- pgd_t *pgd_base = swapper_pg_dir;
- pgd_t *old_pgd = (pgd_t *)xen_start_info.pt_base;
-
-#ifdef CONFIG_X86_PAE
- int i;
- /* Init entries of the first-level page table to the zero page */
- for (i = 0; i < PTRS_PER_PGD; i++)
- set_pgd(pgd_base + i, __pgd(__pa(empty_zero_page) |
_PAGE_PRESENT));
-#endif
-
- /* Enable PSE if available */
- if (cpu_has_pse) {
- set_in_cr4(X86_CR4_PSE);
- }
-
- /* Enable PGE if available */
- if (cpu_has_pge) {
- set_in_cr4(X86_CR4_PGE);
- __PAGE_KERNEL |= _PAGE_GLOBAL;
- __PAGE_KERNEL_EXEC |= _PAGE_GLOBAL;
- }
-
- /*
- * Switch to proper mm_init page directory. Initialise from the current
- * page directory, write-protect the new page directory, then switch to
- * it. We clean up by write-enabling and then freeing the old page dir.
- */
- memcpy(pgd_base, old_pgd, PTRS_PER_PGD_NO_HV*sizeof(pgd_t));
- make_page_readonly(pgd_base);
- xen_pgd_pin(__pa(pgd_base));
- load_cr3(pgd_base);
- xen_pgd_unpin(__pa(old_pgd));
- make_page_writable(old_pgd);
- __flush_tlb_all();
- free_bootmem(__pa(old_pgd), PAGE_SIZE);
- init_mm.context.pinned = 1;
-
- kernel_physical_mapping_init(pgd_base);
- remap_numa_kva();
-
- /*
- * Fixed mappings, only the page table structure has to be
- * created - mappings will be set by set_fixmap():
- */
- vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK;
- page_table_range_init(vaddr, 0, pgd_base);
-
- permanent_kmaps_init(pgd_base);
-
-#ifdef CONFIG_X86_PAE
- /*
- * Add low memory identity-mappings - SMP needs it when
- * starting up on an AP from real-mode. In the non-PAE
- * case we already have these mappings through head.S.
- * All user-space mappings are explicitly cleared after
- * SMP startup.
- */
- pgd_base[0] = pgd_base[USER_PTRS_PER_PGD];
-#endif
-}
-
-#if defined(CONFIG_PM_DISK) || defined(CONFIG_SOFTWARE_SUSPEND)
-/*
- * Swap suspend & friends need this for resume because things like the
intel-agp
- * driver might have split up a kernel 4MB mapping.
- */
-char __nosavedata swsusp_pg_dir[PAGE_SIZE]
- __attribute__ ((aligned (PAGE_SIZE)));
-
-static inline void save_pg_dir(void)
-{
- memcpy(swsusp_pg_dir, swapper_pg_dir, PAGE_SIZE);
-}
-#else
-static inline void save_pg_dir(void)
-{
-}
-#endif
-
-void zap_low_mappings (void)
-{
- int i;
-
- save_pg_dir();
-
- /*
- * Zap initial low-memory mappings.
- *
- * Note that "pgd_clear()" doesn't do it for
- * us, because pgd_clear() is a no-op on i386.
- */
- for (i = 0; i < USER_PTRS_PER_PGD; i++)
-#ifdef CONFIG_X86_PAE
- set_pgd(swapper_pg_dir+i, __pgd(1 + __pa(empty_zero_page)));
-#else
- set_pgd(swapper_pg_dir+i, __pgd(0));
-#endif
- flush_tlb_all();
-}
-
-#ifndef CONFIG_DISCONTIGMEM
-void __init zone_sizes_init(void)
-{
- unsigned long zones_size[MAX_NR_ZONES] = {0, 0, 0};
- unsigned int /*max_dma,*/ high, low;
-
- /*
- * XEN: Our notion of "DMA memory" is fake when running over Xen.
- * We simply put all RAM in the DMA zone so that those drivers which
- * needlessly specify GFP_DMA do not get starved of RAM unnecessarily.
- * Those drivers that *do* require lowmem are screwed anyway when
- * running over Xen!
- */
- /*max_dma = virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT;*/
- low = max_low_pfn;
- high = highend_pfn;
-
- /*if (low < max_dma)*/
- zones_size[ZONE_DMA] = low;
- /*else*/ {
- /*zones_size[ZONE_DMA] = max_dma;*/
- /*zones_size[ZONE_NORMAL] = low - max_dma;*/
-#ifdef CONFIG_HIGHMEM
- zones_size[ZONE_HIGHMEM] = high - low;
-#endif
- }
- free_area_init(zones_size);
-}
-#else
-extern void zone_sizes_init(void);
-#endif /* !CONFIG_DISCONTIGMEM */
-
-static int disable_nx __initdata = 0;
-u64 __supported_pte_mask = ~_PAGE_NX;
-
-/*
- * noexec = on|off
- *
- * Control non executable mappings.
- *
- * on Enable
- * off Disable
- */
-void __init noexec_setup(const char *str)
-{
- if (!strncmp(str, "on",2) && cpu_has_nx) {
- __supported_pte_mask |= _PAGE_NX;
- disable_nx = 0;
- } else if (!strncmp(str,"off",3)) {
- disable_nx = 1;
- __supported_pte_mask &= ~_PAGE_NX;
- }
-}
-
-int nx_enabled = 0;
-#ifdef CONFIG_X86_PAE
-
-static void __init set_nx(void)
-{
- unsigned int v[4], l, h;
-
- if (cpu_has_pae && (cpuid_eax(0x80000000) > 0x80000001)) {
- cpuid(0x80000001, &v[0], &v[1], &v[2], &v[3]);
- if ((v[3] & (1 << 20)) && !disable_nx) {
- rdmsr(MSR_EFER, l, h);
- l |= EFER_NX;
- wrmsr(MSR_EFER, l, h);
- nx_enabled = 1;
- __supported_pte_mask |= _PAGE_NX;
- }
- }
-}
-
-/*
- * Enables/disables executability of a given kernel page and
- * returns the previous setting.
- */
-int __init set_kernel_exec(unsigned long vaddr, int enable)
-{
- pte_t *pte;
- int ret = 1;
-
- if (!nx_enabled)
- goto out;
-
- pte = lookup_address(vaddr);
- BUG_ON(!pte);
-
- if (!pte_exec_kernel(*pte))
- ret = 0;
-
- if (enable)
- pte->pte_high &= ~(1 << (_PAGE_BIT_NX - 32));
- else
- pte->pte_high |= 1 << (_PAGE_BIT_NX - 32);
- __flush_tlb_all();
-out:
- return ret;
-}
-
-#endif
-
-/*
- * paging_init() sets up the page tables - note that the first 8MB are
- * already mapped by head.S.
- *
- * This routines also unmaps the page at virtual kernel address 0, so
- * that we can trap those pesky NULL-reference errors in the kernel.
- */
-void __init paging_init(void)
-{
-#ifdef CONFIG_XEN_PHYSDEV_ACCESS
- int i;
-#endif
-
-#ifdef CONFIG_X86_PAE
- set_nx();
- if (nx_enabled)
- printk("NX (Execute Disable) protection: active\n");
-#endif
-
- pagetable_init();
-
-#ifdef CONFIG_X86_PAE
- /*
- * We will bail out later - printk doesn't work right now so
- * the user would just see a hanging kernel.
- */
- if (cpu_has_pae)
- set_in_cr4(X86_CR4_PAE);
-#endif
- __flush_tlb_all();
-
- kmap_init();
- zone_sizes_init();
-
- /* Switch to the real shared_info page, and clear the dummy page. */
- set_fixmap(FIX_SHARED_INFO, xen_start_info.shared_info);
- HYPERVISOR_shared_info = (shared_info_t *)fix_to_virt(FIX_SHARED_INFO);
- memset(empty_zero_page, 0, sizeof(empty_zero_page));
-
-#ifdef CONFIG_XEN_PHYSDEV_ACCESS
- /* Setup mapping of lower 1st MB */
- for (i = 0; i < NR_FIX_ISAMAPS; i++)
- if (xen_start_info.flags & SIF_PRIVILEGED)
- set_fixmap(FIX_ISAMAP_BEGIN - i, i * PAGE_SIZE);
- else
- __set_fixmap(FIX_ISAMAP_BEGIN - i,
- virt_to_machine(empty_zero_page),
- PAGE_KERNEL_RO);
-#endif
-}
-
-/*
- * Test if the WP bit works in supervisor mode. It isn't supported on 386's
- * and also on some strange 486's (NexGen etc.). All 586+'s are OK. This
- * used to involve black magic jumps to work around some nasty CPU bugs,
- * but fortunately the switch to using exceptions got rid of all that.
- */
-
-void __init test_wp_bit(void)
-{
- printk("Checking if this processor honours the WP bit even in
supervisor mode... ");
-
- /* Any page-aligned address will do, the test is non-destructive */
- __set_fixmap(FIX_WP_TEST, __pa(&swapper_pg_dir), PAGE_READONLY);
- boot_cpu_data.wp_works_ok = do_test_wp_bit();
- clear_fixmap(FIX_WP_TEST);
-
- if (!boot_cpu_data.wp_works_ok) {
- printk("No.\n");
-#ifdef CONFIG_X86_WP_WORKS_OK
- panic("This kernel doesn't support CPU's with broken WP.
Recompile it for a 386!");
-#endif
- } else {
- printk("Ok.\n");
- }
-}
-
-#ifndef CONFIG_DISCONTIGMEM
-static void __init set_max_mapnr_init(void)
-{
-#ifdef CONFIG_HIGHMEM
- max_mapnr = num_physpages = highend_pfn;
-#else
- max_mapnr = num_physpages = max_low_pfn;
-#endif
-}
-#define __free_all_bootmem() free_all_bootmem()
-#else
-#define __free_all_bootmem() free_all_bootmem_node(NODE_DATA(0))
-extern void set_max_mapnr_init(void);
-#endif /* !CONFIG_DISCONTIGMEM */
-
-static struct kcore_list kcore_mem, kcore_vmalloc;
-
-void __init mem_init(void)
-{
- extern int ppro_with_ram_bug(void);
- int codesize, reservedpages, datasize, initsize;
- int tmp;
- int bad_ppro;
- unsigned long pfn;
-
-#ifndef CONFIG_DISCONTIGMEM
- if (!mem_map)
- BUG();
-#endif
-
- bad_ppro = ppro_with_ram_bug();
-
-#ifdef CONFIG_HIGHMEM
- /* check that fixmap and pkmap do not overlap */
- if (PKMAP_BASE+LAST_PKMAP*PAGE_SIZE >= FIXADDR_START) {
- printk(KERN_ERR "fixmap and kmap areas overlap - this will
crash\n");
- printk(KERN_ERR "pkstart: %lxh pkend: %lxh fixstart %lxh\n",
- PKMAP_BASE, PKMAP_BASE+LAST_PKMAP*PAGE_SIZE,
FIXADDR_START);
- BUG();
- }
-#endif
-
- set_max_mapnr_init();
-
-#ifdef CONFIG_HIGHMEM
- high_memory = (void *) __va(highstart_pfn * PAGE_SIZE);
-#else
- high_memory = (void *) __va(max_low_pfn * PAGE_SIZE);
-#endif
- printk("vmalloc area: %lx-%lx, maxmem %lx\n",
- VMALLOC_START,VMALLOC_END,MAXMEM);
- BUG_ON(VMALLOC_START > VMALLOC_END);
-
- /* this will put all low memory onto the freelists */
- totalram_pages += __free_all_bootmem();
- /* XEN: init and count low-mem pages outside initial allocation. */
- for (pfn = xen_start_info.nr_pages; pfn < max_low_pfn; pfn++) {
- ClearPageReserved(&mem_map[pfn]);
- set_page_count(&mem_map[pfn], 1);
- totalram_pages++;
- }
-
- reservedpages = 0;
- for (tmp = 0; tmp < max_low_pfn; tmp++)
- /*
- * Only count reserved RAM pages
- */
- if (page_is_ram(tmp) && PageReserved(pfn_to_page(tmp)))
- reservedpages++;
-
- set_highmem_pages_init(bad_ppro);
-
- codesize = (unsigned long) &_etext - (unsigned long) &_text;
- datasize = (unsigned long) &_edata - (unsigned long) &_etext;
- initsize = (unsigned long) &__init_end - (unsigned long) &__init_begin;
-
- kclist_add(&kcore_mem, __va(0), max_low_pfn << PAGE_SHIFT);
- kclist_add(&kcore_vmalloc, (void *)VMALLOC_START,
- VMALLOC_END-VMALLOC_START);
-
- printk(KERN_INFO "Memory: %luk/%luk available (%dk kernel code, %dk
reserved, %dk data, %dk init, %ldk highmem)\n",
- (unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
- num_physpages << (PAGE_SHIFT-10),
- codesize >> 10,
- reservedpages << (PAGE_SHIFT-10),
- datasize >> 10,
- initsize >> 10,
- (unsigned long) (totalhigh_pages << (PAGE_SHIFT-10))
- );
-
-#ifdef CONFIG_X86_PAE
- if (!cpu_has_pae)
- panic("cannot execute a PAE-enabled kernel on a PAE-less CPU!");
-#endif
- if (boot_cpu_data.wp_works_ok < 0)
- test_wp_bit();
-
- /*
- * Subtle. SMP is doing it's boot stuff late (because it has to
- * fork idle threads) - but it also needs low mappings for the
- * protected-mode entry to work. We zap these entries only after
- * the WP-bit has been tested.
- */
-#ifndef CONFIG_SMP
- zap_low_mappings();
-#endif
-}
-
-kmem_cache_t *pgd_cache;
-kmem_cache_t *pmd_cache;
-
-void __init pgtable_cache_init(void)
-{
- if (PTRS_PER_PMD > 1) {
- pmd_cache = kmem_cache_create("pmd",
- PTRS_PER_PMD*sizeof(pmd_t),
- PTRS_PER_PMD*sizeof(pmd_t),
- 0,
- pmd_ctor,
- NULL);
- if (!pmd_cache)
- panic("pgtable_cache_init(): cannot create pmd cache");
- }
- pgd_cache = kmem_cache_create("pgd",
- PTRS_PER_PGD*sizeof(pgd_t),
- PTRS_PER_PGD*sizeof(pgd_t),
- 0,
- pgd_ctor,
- pgd_dtor);
- if (!pgd_cache)
- panic("pgtable_cache_init(): Cannot create pgd cache");
-}
-
-/*
- * This function cannot be __init, since exceptions don't work in that
- * section. Put this after the callers, so that it cannot be inlined.
- */
-static int noinline do_test_wp_bit(void)
-{
- char tmp_reg;
- int flag;
-
- __asm__ __volatile__(
- " movb %0,%1 \n"
- "1: movb %1,%0 \n"
- " xorl %2,%2 \n"
- "2: \n"
- ".section __ex_table,\"a\"\n"
- " .align 4 \n"
- " .long 1b,2b \n"
- ".previous \n"
- :"=m" (*(char *)fix_to_virt(FIX_WP_TEST)),
- "=q" (tmp_reg),
- "=r" (flag)
- :"2" (1)
- :"memory");
-
- return flag;
-}
-
-void free_initmem(void)
-{
- unsigned long addr;
-
- addr = (unsigned long)(&__init_begin);
- for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) {
- ClearPageReserved(virt_to_page(addr));
- set_page_count(virt_to_page(addr), 1);
- memset((void *)addr, 0xcc, PAGE_SIZE);
- free_page(addr);
- totalram_pages++;
- }
- printk (KERN_INFO "Freeing unused kernel memory: %dk freed\n",
(__init_end - __init_begin) >> 10);
-}
-
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
- if (start < end)
- printk (KERN_INFO "Freeing initrd memory: %ldk freed\n", (end -
start) >> 10);
- for (; start < end; start += PAGE_SIZE) {
- ClearPageReserved(virt_to_page(start));
- set_page_count(virt_to_page(start), 1);
- free_page(start);
- totalram_pages++;
- }
-}
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/mm/ioremap.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/mm/ioremap.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,442 +0,0 @@
-/*
- * arch/i386/mm/ioremap.c
- *
- * Re-map IO memory to kernel address space so that we can access it.
- * This is needed for high PCI addresses that aren't mapped in the
- * 640k-1MB IO memory area on PC's
- *
- * (C) Copyright 1995 1996 Linus Torvalds
- */
-
-#include <linux/vmalloc.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <asm/io.h>
-#include <asm/fixmap.h>
-#include <asm/cacheflush.h>
-#include <asm/tlbflush.h>
-#include <asm/pgtable.h>
-#include <asm/pgalloc.h>
-
-#ifndef CONFIG_XEN_PHYSDEV_ACCESS
-
-void * __ioremap(unsigned long phys_addr, unsigned long size,
- unsigned long flags)
-{
- return NULL;
-}
-
-void *ioremap_nocache (unsigned long phys_addr, unsigned long size)
-{
- return NULL;
-}
-
-void iounmap(volatile void __iomem *addr)
-{
-}
-
-void __init *bt_ioremap(unsigned long phys_addr, unsigned long size)
-{
- return NULL;
-}
-
-void __init bt_iounmap(void *addr, unsigned long size)
-{
-}
-
-#else
-
-/*
- * Does @address reside within a non-highmem page that is local to this virtual
- * machine (i.e., not an I/O page, nor a memory page belonging to another VM).
- * See the comment that accompanies pte_pfn() in pgtable-2level.h to understand
- * why this works.
- */
-static inline int is_local_lowmem(unsigned long address)
-{
- extern unsigned long max_low_pfn;
- unsigned long mfn = address >> PAGE_SHIFT;
- unsigned long pfn = mfn_to_pfn(mfn);
- return ((pfn < max_low_pfn) && (pfn_to_mfn(pfn) == mfn));
-}
-
-/*
- * Generic mapping function (not visible outside):
- */
-
-/*
- * Remap an arbitrary physical address space into the kernel virtual
- * address space. Needed when the kernel wants to access high addresses
- * directly.
- *
- * NOTE! We need to allow non-page-aligned mappings too: we will obviously
- * have to convert them into an offset in a page-aligned mapping, but the
- * caller shouldn't need to know that small detail.
- */
-void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned
long flags)
-{
- void __iomem * addr;
- struct vm_struct * area;
- unsigned long offset, last_addr;
- domid_t domid = DOMID_IO;
-
- /* Don't allow wraparound or zero size */
- last_addr = phys_addr + size - 1;
- if (!size || last_addr < phys_addr)
- return NULL;
-
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
- /*
- * Don't remap the low PCI/ISA area, it's always mapped..
- */
- if (phys_addr >= 0x0 && last_addr < 0x100000)
- return isa_bus_to_virt(phys_addr);
-#endif
-
- /*
- * Don't allow anybody to remap normal RAM that we're using..
- */
- if (is_local_lowmem(phys_addr)) {
- char *t_addr, *t_end;
- struct page *page;
-
- t_addr = bus_to_virt(phys_addr);
- t_end = t_addr + (size - 1);
-
- for(page = virt_to_page(t_addr); page <= virt_to_page(t_end);
page++)
- if(!PageReserved(page))
- return NULL;
-
- domid = DOMID_SELF;
- }
-
- /*
- * Mappings have to be page-aligned
- */
- offset = phys_addr & ~PAGE_MASK;
- phys_addr &= PAGE_MASK;
- size = PAGE_ALIGN(last_addr+1) - phys_addr;
-
- /*
- * Ok, go for it..
- */
- area = get_vm_area(size, VM_IOREMAP | (flags << 20));
- if (!area)
- return NULL;
- area->phys_addr = phys_addr;
- addr = (void __iomem *) area->addr;
- if (direct_remap_area_pages(&init_mm, (unsigned long) addr, phys_addr,
- size, __pgprot(_PAGE_PRESENT | _PAGE_RW |
- _PAGE_DIRTY | _PAGE_ACCESSED
- | flags), domid)) {
- vunmap((void __force *) addr);
- return NULL;
- }
- return (void __iomem *) (offset + (char __iomem *)addr);
-}
-
-
-/**
- * ioremap_nocache - map bus memory into CPU space
- * @offset: bus address of the memory
- * @size: size of the resource to map
- *
- * ioremap_nocache performs a platform specific sequence of operations to
- * make bus memory CPU accessible via the readb/readw/readl/writeb/
- * writew/writel functions and the other mmio helpers. The returned
- * address is not guaranteed to be usable directly as a virtual
- * address.
- *
- * This version of ioremap ensures that the memory is marked uncachable
- * on the CPU as well as honouring existing caching rules from things like
- * the PCI bus. Note that there are other caches and buffers on many
- * busses. In particular driver authors should read up on PCI writes
- *
- * It's useful if some control registers are in such an area and
- * write combining or read caching is not desirable:
- *
- * Must be freed with iounmap.
- */
-
-void __iomem *ioremap_nocache (unsigned long phys_addr, unsigned long size)
-{
- unsigned long last_addr;
- void __iomem *p = __ioremap(phys_addr, size, _PAGE_PCD);
- if (!p)
- return p;
-
- /* Guaranteed to be > phys_addr, as per __ioremap() */
- last_addr = phys_addr + size - 1;
-
- if (is_local_lowmem(last_addr)) {
- struct page *ppage = virt_to_page(bus_to_virt(phys_addr));
- unsigned long npages;
-
- phys_addr &= PAGE_MASK;
-
- /* This might overflow and become zero.. */
- last_addr = PAGE_ALIGN(last_addr);
-
- /* .. but that's ok, because modulo-2**n arithmetic will make
- * the page-aligned "last - first" come out right.
- */
- npages = (last_addr - phys_addr) >> PAGE_SHIFT;
-
- if (change_page_attr(ppage, npages, PAGE_KERNEL_NOCACHE) < 0) {
- iounmap(p);
- p = NULL;
- }
- global_flush_tlb();
- }
-
- return p;
-}
-
-void iounmap(volatile void __iomem *addr)
-{
- struct vm_struct *p;
- if ((void __force *) addr <= high_memory)
- return;
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
- if ((unsigned long) addr >= fix_to_virt(FIX_ISAMAP_BEGIN))
- return;
-#endif
- p = remove_vm_area((void *) (PAGE_MASK & (unsigned long __force) addr));
- if (!p) {
- printk("__iounmap: bad address %p\n", addr);
- return;
- }
-
- if ((p->flags >> 20) && is_local_lowmem(p->phys_addr)) {
- /* p->size includes the guard page, but cpa doesn't like that */
- change_page_attr(virt_to_page(bus_to_virt(p->phys_addr)),
- (p->size - PAGE_SIZE) >> PAGE_SHIFT,
- PAGE_KERNEL);
- global_flush_tlb();
- }
- kfree(p);
-}
-
-void __init *bt_ioremap(unsigned long phys_addr, unsigned long size)
-{
- unsigned long offset, last_addr;
- unsigned int nrpages;
- enum fixed_addresses idx;
-
- /* Don't allow wraparound or zero size */
- last_addr = phys_addr + size - 1;
- if (!size || last_addr < phys_addr)
- return NULL;
-
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
- /*
- * Don't remap the low PCI/ISA area, it's always mapped..
- */
- if (phys_addr >= 0x0 && last_addr < 0x100000)
- return isa_bus_to_virt(phys_addr);
-#endif
-
- /*
- * Mappings have to be page-aligned
- */
- offset = phys_addr & ~PAGE_MASK;
- phys_addr &= PAGE_MASK;
- size = PAGE_ALIGN(last_addr) - phys_addr;
-
- /*
- * Mappings have to fit in the FIX_BTMAP area.
- */
- nrpages = size >> PAGE_SHIFT;
- if (nrpages > NR_FIX_BTMAPS)
- return NULL;
-
- /*
- * Ok, go for it..
- */
- idx = FIX_BTMAP_BEGIN;
- while (nrpages > 0) {
- set_fixmap(idx, phys_addr);
- phys_addr += PAGE_SIZE;
- --idx;
- --nrpages;
- }
- return (void*) (offset + fix_to_virt(FIX_BTMAP_BEGIN));
-}
-
-void __init bt_iounmap(void *addr, unsigned long size)
-{
- unsigned long virt_addr;
- unsigned long offset;
- unsigned int nrpages;
- enum fixed_addresses idx;
-
- virt_addr = (unsigned long)addr;
- if (virt_addr < fix_to_virt(FIX_BTMAP_BEGIN))
- return;
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
- if (virt_addr >= fix_to_virt(FIX_ISAMAP_BEGIN))
- return;
-#endif
- offset = virt_addr & ~PAGE_MASK;
- nrpages = PAGE_ALIGN(offset + size - 1) >> PAGE_SHIFT;
-
- idx = FIX_BTMAP_BEGIN;
- while (nrpages > 0) {
- clear_fixmap(idx);
- --idx;
- --nrpages;
- }
-}
-
-#endif /* CONFIG_XEN_PHYSDEV_ACCESS */
-
-/* These hacky macros avoid phys->machine translations. */
-#define __direct_pte(x) ((pte_t) { (x) } )
-#define __direct_mk_pte(page_nr,pgprot) \
- __direct_pte(((page_nr) << PAGE_SHIFT) | pgprot_val(pgprot))
-#define direct_mk_pte_phys(physpage, pgprot) \
- __direct_mk_pte((physpage) >> PAGE_SHIFT, pgprot)
-
-static inline void direct_remap_area_pte(pte_t *pte,
- unsigned long address,
- unsigned long size,
- mmu_update_t **v)
-{
- unsigned long end;
-
- address &= ~PMD_MASK;
- end = address + size;
- if (end > PMD_SIZE)
- end = PMD_SIZE;
- if (address >= end)
- BUG();
-
- do {
- (*v)->ptr = virt_to_machine(pte);
- (*v)++;
- address += PAGE_SIZE;
- pte++;
- } while (address && (address < end));
-}
-
-static inline int direct_remap_area_pmd(struct mm_struct *mm,
- pmd_t *pmd,
- unsigned long address,
- unsigned long size,
- mmu_update_t **v)
-{
- unsigned long end;
-
- address &= ~PGDIR_MASK;
- end = address + size;
- if (end > PGDIR_SIZE)
- end = PGDIR_SIZE;
- if (address >= end)
- BUG();
- do {
- pte_t *pte = (mm == &init_mm) ?
- pte_alloc_kernel(mm, pmd, address) :
- pte_alloc_map(mm, pmd, address);
- if (!pte)
- return -ENOMEM;
- direct_remap_area_pte(pte, address, end - address, v);
- pte_unmap(pte);
- address = (address + PMD_SIZE) & PMD_MASK;
- pmd++;
- } while (address && (address < end));
- return 0;
-}
-
-int __direct_remap_area_pages(struct mm_struct *mm,
- unsigned long address,
- unsigned long size,
- mmu_update_t *v)
-{
- pgd_t * dir;
- unsigned long end = address + size;
- int error;
-
- dir = pgd_offset(mm, address);
- if (address >= end)
- BUG();
- spin_lock(&mm->page_table_lock);
- do {
- pud_t *pud;
- pmd_t *pmd;
-
- error = -ENOMEM;
- pud = pud_alloc(mm, dir, address);
- if (!pud)
- break;
- pmd = pmd_alloc(mm, pud, address);
- if (!pmd)
- break;
- error = 0;
- direct_remap_area_pmd(mm, pmd, address, end - address, &v);
- address = (address + PGDIR_SIZE) & PGDIR_MASK;
- dir++;
-
- } while (address && (address < end));
- spin_unlock(&mm->page_table_lock);
- return error;
-}
-
-
-int direct_remap_area_pages(struct mm_struct *mm,
- unsigned long address,
- unsigned long machine_addr,
- unsigned long size,
- pgprot_t prot,
- domid_t domid)
-{
- int i;
- unsigned long start_address;
-#define MAX_DIRECTMAP_MMU_QUEUE 130
- mmu_update_t u[MAX_DIRECTMAP_MMU_QUEUE], *v = u;
-
- start_address = address;
-
- flush_cache_all();
-
- for (i = 0; i < size; i += PAGE_SIZE) {
- if ((v - u) == MAX_DIRECTMAP_MMU_QUEUE) {
- /* Fill in the PTE pointers. */
- __direct_remap_area_pages(mm,
- start_address,
- address-start_address,
- u);
-
- if (HYPERVISOR_mmu_update(u, v - u, NULL, domid) < 0)
- return -EFAULT;
- v = u;
- start_address = address;
- }
-
- /*
- * Fill in the machine address: PTE ptr is done later by
- * __direct_remap_area_pages().
- */
- v->val = (machine_addr & PAGE_MASK) | pgprot_val(prot);
-
- machine_addr += PAGE_SIZE;
- address += PAGE_SIZE;
- v++;
- }
-
- if (v != u) {
- /* get the ptep's filled in */
- __direct_remap_area_pages(mm,
- start_address,
- address-start_address,
- u);
- if (unlikely(HYPERVISOR_mmu_update(u, v - u, NULL, domid) < 0))
- return -EFAULT;
- }
-
- flush_tlb_all();
-
- return 0;
-}
-
-EXPORT_SYMBOL(direct_remap_area_pages);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/mm/pgtable.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/mm/pgtable.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,525 +0,0 @@
-/*
- * linux/arch/i386/mm/pgtable.c
- */
-
-#include <linux/config.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/mm.h>
-#include <linux/swap.h>
-#include <linux/smp.h>
-#include <linux/highmem.h>
-#include <linux/slab.h>
-#include <linux/pagemap.h>
-#include <linux/spinlock.h>
-
-#include <asm/system.h>
-#include <asm/pgtable.h>
-#include <asm/pgalloc.h>
-#include <asm/fixmap.h>
-#include <asm/e820.h>
-#include <asm/tlb.h>
-#include <asm/tlbflush.h>
-#include <asm/io.h>
-#include <asm/mmu_context.h>
-
-#include <asm-xen/foreign_page.h>
-
-void show_mem(void)
-{
- int total = 0, reserved = 0;
- int shared = 0, cached = 0;
- int highmem = 0;
- struct page *page;
- pg_data_t *pgdat;
- unsigned long i;
-
- printk("Mem-info:\n");
- show_free_areas();
- printk("Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
- for_each_pgdat(pgdat) {
- for (i = 0; i < pgdat->node_spanned_pages; ++i) {
- page = pgdat->node_mem_map + i;
- total++;
- if (PageHighMem(page))
- highmem++;
- if (PageReserved(page))
- reserved++;
- else if (PageSwapCache(page))
- cached++;
- else if (page_count(page))
- shared += page_count(page) - 1;
- }
- }
- printk("%d pages of RAM\n", total);
- printk("%d pages of HIGHMEM\n",highmem);
- printk("%d reserved pages\n",reserved);
- printk("%d pages shared\n",shared);
- printk("%d pages swap cached\n",cached);
-}
-
-/*
- * Associate a virtual page frame with a given physical page frame
- * and protection flags for that frame.
- */
-static void set_pte_pfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags)
-{
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *pte;
-
- pgd = swapper_pg_dir + pgd_index(vaddr);
- if (pgd_none(*pgd)) {
- BUG();
- return;
- }
- pud = pud_offset(pgd, vaddr);
- if (pud_none(*pud)) {
- BUG();
- return;
- }
- pmd = pmd_offset(pud, vaddr);
- if (pmd_none(*pmd)) {
- BUG();
- return;
- }
- pte = pte_offset_kernel(pmd, vaddr);
- /* <pfn,flags> stored as-is, to permit clearing entries */
- set_pte(pte, pfn_pte(pfn, flags));
-
- /*
- * It's enough to flush this one mapping.
- * (PGE mappings get flushed as well)
- */
- __flush_tlb_one(vaddr);
-}
-
-/*
- * Associate a virtual page frame with a given physical page frame
- * and protection flags for that frame.
- */
-static void set_pte_pfn_ma(unsigned long vaddr, unsigned long pfn,
- pgprot_t flags)
-{
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *pte;
-
- pgd = swapper_pg_dir + pgd_index(vaddr);
- if (pgd_none(*pgd)) {
- BUG();
- return;
- }
- pud = pud_offset(pgd, vaddr);
- if (pud_none(*pud)) {
- BUG();
- return;
- }
- pmd = pmd_offset(pud, vaddr);
- if (pmd_none(*pmd)) {
- BUG();
- return;
- }
- pte = pte_offset_kernel(pmd, vaddr);
- /* <pfn,flags> stored as-is, to permit clearing entries */
- set_pte(pte, pfn_pte_ma(pfn, flags));
-
- /*
- * It's enough to flush this one mapping.
- * (PGE mappings get flushed as well)
- */
- __flush_tlb_one(vaddr);
-}
-
-/*
- * Associate a large virtual page frame with a given physical page frame
- * and protection flags for that frame. pfn is for the base of the page,
- * vaddr is what the page gets mapped to - both must be properly aligned.
- * The pmd must already be instantiated. Assumes PAE mode.
- */
-void set_pmd_pfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags)
-{
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
-
- if (vaddr & (PMD_SIZE-1)) { /* vaddr is misaligned */
- printk ("set_pmd_pfn: vaddr misaligned\n");
- return; /* BUG(); */
- }
- if (pfn & (PTRS_PER_PTE-1)) { /* pfn is misaligned */
- printk ("set_pmd_pfn: pfn misaligned\n");
- return; /* BUG(); */
- }
- pgd = swapper_pg_dir + pgd_index(vaddr);
- if (pgd_none(*pgd)) {
- printk ("set_pmd_pfn: pgd_none\n");
- return; /* BUG(); */
- }
- pud = pud_offset(pgd, vaddr);
- pmd = pmd_offset(pud, vaddr);
- set_pmd(pmd, pfn_pmd(pfn, flags));
- /*
- * It's enough to flush this one mapping.
- * (PGE mappings get flushed as well)
- */
- __flush_tlb_one(vaddr);
-}
-
-void __set_fixmap (enum fixed_addresses idx, unsigned long phys, pgprot_t
flags)
-{
- unsigned long address = __fix_to_virt(idx);
-
- if (idx >= __end_of_fixed_addresses) {
- BUG();
- return;
- }
- switch (idx) {
- case FIX_WP_TEST:
- case FIX_VSYSCALL:
-#ifdef CONFIG_X86_F00F_BUG
- case FIX_F00F_IDT:
-#endif
- set_pte_pfn(address, phys >> PAGE_SHIFT, flags);
- break;
- default:
- set_pte_pfn_ma(address, phys >> PAGE_SHIFT, flags);
- break;
- }
-}
-
-pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
-{
- pte_t *pte = (pte_t
*)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
- if (pte)
- make_page_readonly(pte);
- return pte;
-}
-
-struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address)
-{
- struct page *pte;
-
-#ifdef CONFIG_HIGHPTE
- pte = alloc_pages(GFP_KERNEL|__GFP_HIGHMEM|__GFP_REPEAT|__GFP_ZERO, 0);
-#else
- pte = alloc_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 0);
- if (pte) {
- SetPageForeign(pte, pte_free);
- set_page_count(pte, 1);
- }
-#endif
-
- return pte;
-}
-
-void pte_free(struct page *pte)
-{
- unsigned long va = (unsigned long)__va(page_to_pfn(pte)<<PAGE_SHIFT);
-
- if (!pte_write(*virt_to_ptep(va)))
- HYPERVISOR_update_va_mapping(
- va, pfn_pte(page_to_pfn(pte), PAGE_KERNEL), 0);
-
- ClearPageForeign(pte);
- set_page_count(pte, 1);
-
- __free_page(pte);
-}
-
-void pmd_ctor(void *pmd, kmem_cache_t *cache, unsigned long flags)
-{
- memset(pmd, 0, PTRS_PER_PMD*sizeof(pmd_t));
-}
-
-/*
- * List of all pgd's needed for non-PAE so it can invalidate entries
- * in both cached and uncached pgd's; not needed for PAE since the
- * kernel pmd is shared. If PAE were not to share the pmd a similar
- * tactic would be needed. This is essentially codepath-based locking
- * against pageattr.c; it is the unique case in which a valid change
- * of kernel pagetables can't be lazily synchronized by vmalloc faults.
- * vmalloc faults work because attached pagetables are never freed.
- * The locking scheme was chosen on the basis of manfred's
- * recommendations and having no core impact whatsoever.
- * -- wli
- */
-DEFINE_SPINLOCK(pgd_lock);
-struct page *pgd_list;
-
-static inline void pgd_list_add(pgd_t *pgd)
-{
- struct page *page = virt_to_page(pgd);
- page->index = (unsigned long)pgd_list;
- if (pgd_list)
- pgd_list->private = (unsigned long)&page->index;
- pgd_list = page;
- page->private = (unsigned long)&pgd_list;
-}
-
-static inline void pgd_list_del(pgd_t *pgd)
-{
- struct page *next, **pprev, *page = virt_to_page(pgd);
- next = (struct page *)page->index;
- pprev = (struct page **)page->private;
- *pprev = next;
- if (next)
- next->private = (unsigned long)pprev;
-}
-
-void pgd_ctor(void *pgd, kmem_cache_t *cache, unsigned long unused)
-{
- unsigned long flags;
-
- if (PTRS_PER_PMD == 1)
- spin_lock_irqsave(&pgd_lock, flags);
-
- memcpy((pgd_t *)pgd + USER_PTRS_PER_PGD,
- swapper_pg_dir + USER_PTRS_PER_PGD,
- (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
-
- if (PTRS_PER_PMD > 1)
- return;
-
- pgd_list_add(pgd);
- spin_unlock_irqrestore(&pgd_lock, flags);
- memset(pgd, 0, USER_PTRS_PER_PGD*sizeof(pgd_t));
-}
-
-/* never called when PTRS_PER_PMD > 1 */
-void pgd_dtor(void *pgd, kmem_cache_t *cache, unsigned long unused)
-{
- unsigned long flags; /* can be called from interrupt context */
-
- if (PTRS_PER_PMD > 1)
- return;
-
- spin_lock_irqsave(&pgd_lock, flags);
- pgd_list_del(pgd);
- spin_unlock_irqrestore(&pgd_lock, flags);
-}
-
-pgd_t *pgd_alloc(struct mm_struct *mm)
-{
- int i;
- pgd_t *pgd = kmem_cache_alloc(pgd_cache, GFP_KERNEL);
-
- if (PTRS_PER_PMD == 1 || !pgd)
- return pgd;
-
- for (i = 0; i < USER_PTRS_PER_PGD; ++i) {
- pmd_t *pmd = kmem_cache_alloc(pmd_cache, GFP_KERNEL);
- if (!pmd)
- goto out_oom;
- set_pgd(&pgd[i], __pgd(1 + __pa(pmd)));
- }
- return pgd;
-
-out_oom:
- for (i--; i >= 0; i--)
- kmem_cache_free(pmd_cache, (void *)__va(pgd_val(pgd[i])-1));
- kmem_cache_free(pgd_cache, pgd);
- return NULL;
-}
-
-void pgd_free(pgd_t *pgd)
-{
- int i;
- pte_t *ptep = virt_to_ptep(pgd);
-
- if (!pte_write(*ptep)) {
- xen_pgd_unpin(__pa(pgd));
- HYPERVISOR_update_va_mapping(
- (unsigned long)pgd,
- pfn_pte(virt_to_phys(pgd)>>PAGE_SHIFT, PAGE_KERNEL),
- 0);
- }
-
- /* in the PAE case user pgd entries are overwritten before usage */
- if (PTRS_PER_PMD > 1)
- for (i = 0; i < USER_PTRS_PER_PGD; ++i)
- kmem_cache_free(pmd_cache, (void
*)__va(pgd_val(pgd[i])-1));
- /* in the non-PAE case, clear_page_range() clears user pgd entries */
- kmem_cache_free(pgd_cache, pgd);
-}
-
-#ifndef CONFIG_XEN_SHADOW_MODE
-void make_lowmem_page_readonly(void *va)
-{
- pte_t *pte = virt_to_ptep(va);
- set_pte(pte, pte_wrprotect(*pte));
-}
-
-void make_lowmem_page_writable(void *va)
-{
- pte_t *pte = virt_to_ptep(va);
- set_pte(pte, pte_mkwrite(*pte));
-}
-
-void make_page_readonly(void *va)
-{
- pte_t *pte = virt_to_ptep(va);
- set_pte(pte, pte_wrprotect(*pte));
- if ( (unsigned long)va >= (unsigned long)high_memory )
- {
- unsigned long phys;
- phys = machine_to_phys(*(unsigned long *)pte & PAGE_MASK);
-#ifdef CONFIG_HIGHMEM
- if ( (phys >> PAGE_SHIFT) < highstart_pfn )
-#endif
- make_lowmem_page_readonly(phys_to_virt(phys));
- }
-}
-
-void make_page_writable(void *va)
-{
- pte_t *pte = virt_to_ptep(va);
- set_pte(pte, pte_mkwrite(*pte));
- if ( (unsigned long)va >= (unsigned long)high_memory )
- {
- unsigned long phys;
- phys = machine_to_phys(*(unsigned long *)pte & PAGE_MASK);
-#ifdef CONFIG_HIGHMEM
- if ( (phys >> PAGE_SHIFT) < highstart_pfn )
-#endif
- make_lowmem_page_writable(phys_to_virt(phys));
- }
-}
-
-void make_pages_readonly(void *va, unsigned int nr)
-{
- while ( nr-- != 0 )
- {
- make_page_readonly(va);
- va = (void *)((unsigned long)va + PAGE_SIZE);
- }
-}
-
-void make_pages_writable(void *va, unsigned int nr)
-{
- while ( nr-- != 0 )
- {
- make_page_writable(va);
- va = (void *)((unsigned long)va + PAGE_SIZE);
- }
-}
-#endif /* CONFIG_XEN_SHADOW_MODE */
-
-LIST_HEAD(mm_unpinned);
-DEFINE_SPINLOCK(mm_unpinned_lock);
-
-static inline void mm_walk_set_prot(void *pt, pgprot_t flags)
-{
- struct page *page = virt_to_page(pt);
- unsigned long pfn = page_to_pfn(page);
-
- if (PageHighMem(page))
- return;
- HYPERVISOR_update_va_mapping(
- (unsigned long)__va(pfn << PAGE_SHIFT),
- pfn_pte(pfn, flags), 0);
-}
-
-static void mm_walk(struct mm_struct *mm, pgprot_t flags)
-{
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *pte;
- int g,u,m;
-
- pgd = mm->pgd;
- for (g = 0; g < USER_PTRS_PER_PGD; g++, pgd++) {
- if (pgd_none(*pgd))
- continue;
- pud = pud_offset(pgd, 0);
- if (PTRS_PER_PUD > 1) /* not folded */
- mm_walk_set_prot(pud,flags);
- for (u = 0; u < PTRS_PER_PUD; u++, pud++) {
- if (pud_none(*pud))
- continue;
- pmd = pmd_offset(pud, 0);
- if (PTRS_PER_PMD > 1) /* not folded */
- mm_walk_set_prot(pmd,flags);
- for (m = 0; m < PTRS_PER_PMD; m++, pmd++) {
- if (pmd_none(*pmd))
- continue;
- pte = pte_offset_kernel(pmd,0);
- mm_walk_set_prot(pte,flags);
- }
- }
- }
-}
-
-void mm_pin(struct mm_struct *mm)
-{
- spin_lock(&mm->page_table_lock);
-
- mm_walk(mm, PAGE_KERNEL_RO);
- HYPERVISOR_update_va_mapping(
- (unsigned long)mm->pgd,
- pfn_pte(virt_to_phys(mm->pgd)>>PAGE_SHIFT, PAGE_KERNEL_RO),
- UVMF_TLB_FLUSH);
- xen_pgd_pin(__pa(mm->pgd));
- mm->context.pinned = 1;
- spin_lock(&mm_unpinned_lock);
- list_del(&mm->context.unpinned);
- spin_unlock(&mm_unpinned_lock);
-
- spin_unlock(&mm->page_table_lock);
-}
-
-void mm_unpin(struct mm_struct *mm)
-{
- spin_lock(&mm->page_table_lock);
-
- xen_pgd_unpin(__pa(mm->pgd));
- HYPERVISOR_update_va_mapping(
- (unsigned long)mm->pgd,
- pfn_pte(virt_to_phys(mm->pgd)>>PAGE_SHIFT, PAGE_KERNEL), 0);
- mm_walk(mm, PAGE_KERNEL);
- xen_tlb_flush();
- mm->context.pinned = 0;
- spin_lock(&mm_unpinned_lock);
- list_add(&mm->context.unpinned, &mm_unpinned);
- spin_unlock(&mm_unpinned_lock);
-
- spin_unlock(&mm->page_table_lock);
-}
-
-void mm_pin_all(void)
-{
- while (!list_empty(&mm_unpinned))
- mm_pin(list_entry(mm_unpinned.next, struct mm_struct,
- context.unpinned));
-}
-
-void _arch_exit_mmap(struct mm_struct *mm)
-{
- struct task_struct *tsk = current;
-
- task_lock(tsk);
-
- /*
- * We aggressively remove defunct pgd from cr3. We execute unmap_vmas()
- * *much* faster this way, as no tlb flushes means bigger wrpt batches.
- */
- if ( tsk->active_mm == mm )
- {
- tsk->active_mm = &init_mm;
- atomic_inc(&init_mm.mm_count);
-
- switch_mm(mm, &init_mm, tsk);
-
- atomic_dec(&mm->mm_count);
- BUG_ON(atomic_read(&mm->mm_count) == 0);
- }
-
- task_unlock(tsk);
-
- if ( mm->context.pinned && (atomic_read(&mm->mm_count) == 1) )
- mm_unpin(mm);
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/pci/Makefile
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/pci/Makefile Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,32 +0,0 @@
-XENARCH := $(subst ",,$(CONFIG_XENARCH))
-
-CFLAGS += -Iarch/$(XENARCH)/pci
-
-c-obj-y := i386.o
-
-c-obj-$(CONFIG_PCI_BIOS) += pcbios.o
-c-obj-$(CONFIG_PCI_MMCONFIG) += mmconfig.o
-c-obj-$(CONFIG_PCI_DIRECT) += direct.o
-
-c-pci-y := fixup.o
-c-pci-$(CONFIG_ACPI_PCI) += acpi.o
-c-pci-y += legacy.o
-# Make sure irq.o gets linked in after legacy.o
-l-pci-y += irq.o
-
-c-pci-$(CONFIG_X86_VISWS) := visws.o fixup.o
-pci-$(CONFIG_X86_VISWS) :=
-c-pci-$(CONFIG_X86_NUMAQ) := numa.o
-pci-$(CONFIG_X86_NUMAQ) := irq.o
-
-obj-y += $(pci-y)
-c-obj-y += $(c-pci-y) common.o
-
-c-link :=
-
-$(patsubst %.o,$(obj)/%.c,$(c-obj-y) $(c-link)):
- @ln -fsn $(srctree)/arch/i386/pci/$(notdir $@) $@
-
-obj-y += $(c-obj-y) $(l-pci-y)
-
-clean-files += $(patsubst %.o,%.c,$(c-obj-y) $(c-obj-) $(c-link))
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/i386/pci/irq.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/pci/irq.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,1125 +0,0 @@
-/*
- * Low-Level PCI Support for PC -- Routing of Interrupts
- *
- * (c) 1999--2000 Martin Mares <mj@xxxxxx>
- */
-
-#include <linux/config.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/dmi.h>
-#include <asm/io.h>
-#include <asm/smp.h>
-#include <asm/io_apic.h>
-#include <asm/hw_irq.h>
-#include <linux/acpi.h>
-
-#include "pci.h"
-
-#define DBG printk
-
-#define PIRQ_SIGNATURE (('$' << 0) + ('P' << 8) + ('I' << 16) + ('R' << 24))
-#define PIRQ_VERSION 0x0100
-
-static int broken_hp_bios_irq9;
-static int acer_tm360_irqrouting;
-
-static struct irq_routing_table *pirq_table;
-
-static int pirq_enable_irq(struct pci_dev *dev);
-
-/*
- * Never use: 0, 1, 2 (timer, keyboard, and cascade)
- * Avoid using: 13, 14 and 15 (FP error and IDE).
- * Penalize: 3, 4, 6, 7, 12 (known ISA uses: serial, floppy, parallel and
mouse)
- */
-unsigned int pcibios_irq_mask = 0xfff8;
-
-static int pirq_penalty[16] = {
- 1000000, 1000000, 1000000, 1000, 1000, 0, 1000, 1000,
- 0, 0, 0, 0, 1000, 100000, 100000, 100000
-};
-
-struct irq_router {
- char *name;
- u16 vendor, device;
- int (*get)(struct pci_dev *router, struct pci_dev *dev, int pirq);
- int (*set)(struct pci_dev *router, struct pci_dev *dev, int pirq, int
new);
-};
-
-struct irq_router_handler {
- u16 vendor;
- int (*probe)(struct irq_router *r, struct pci_dev *router, u16 device);
-};
-
-int (*pcibios_enable_irq)(struct pci_dev *dev) = NULL;
-
-/*
- * Search 0xf0000 -- 0xfffff for the PCI IRQ Routing Table.
- */
-
-static struct irq_routing_table * __init pirq_find_routing_table(void)
-{
- u8 *addr;
- struct irq_routing_table *rt;
- int i;
- u8 sum;
-
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
- for(addr = (u8 *) isa_bus_to_virt(0xf0000); addr < (u8 *)
isa_bus_to_virt(0x100000); addr += 16) {
- rt = (struct irq_routing_table *) addr;
- if (rt->signature != PIRQ_SIGNATURE ||
- rt->version != PIRQ_VERSION ||
- rt->size % 16 ||
- rt->size < sizeof(struct irq_routing_table))
- continue;
- sum = 0;
- for(i=0; i<rt->size; i++)
- sum += addr[i];
- if (!sum) {
- DBG("PCI: Interrupt Routing Table found at 0x%p\n", rt);
- return rt;
- }
- }
-#endif
-
- return NULL;
-}
-
-/*
- * If we have a IRQ routing table, use it to search for peer host
- * bridges. It's a gross hack, but since there are no other known
- * ways how to get a list of buses, we have to go this way.
- */
-
-static void __init pirq_peer_trick(void)
-{
- struct irq_routing_table *rt = pirq_table;
- u8 busmap[256];
- int i;
- struct irq_info *e;
-
- memset(busmap, 0, sizeof(busmap));
- for(i=0; i < (rt->size - sizeof(struct irq_routing_table)) /
sizeof(struct irq_info); i++) {
- e = &rt->slots[i];
-#ifdef DEBUG
- {
- int j;
- DBG("%02x:%02x slot=%02x", e->bus, e->devfn/8, e->slot);
- for(j=0; j<4; j++)
- DBG(" %d:%02x/%04x", j, e->irq[j].link,
e->irq[j].bitmap);
- DBG("\n");
- }
-#endif
- busmap[e->bus] = 1;
- }
- for(i = 1; i < 256; i++) {
- if (!busmap[i] || pci_find_bus(0, i))
- continue;
- if (pci_scan_bus(i, &pci_root_ops, NULL))
- printk(KERN_INFO "PCI: Discovered primary peer bus %02x
[IRQ]\n", i);
- }
- pcibios_last_bus = -1;
-}
-
-/*
- * Code for querying and setting of IRQ routes on various interrupt routers.
- */
-
-void eisa_set_level_irq(unsigned int irq)
-{
- unsigned char mask = 1 << (irq & 7);
- unsigned int port = 0x4d0 + (irq >> 3);
- unsigned char val;
- static u16 eisa_irq_mask;
-
- if (irq >= 16 || (1 << irq) & eisa_irq_mask)
- return;
-
- eisa_irq_mask |= (1 << irq);
- printk("PCI: setting IRQ %u as level-triggered\n", irq);
- val = inb(port);
- if (!(val & mask)) {
- DBG(" -> edge");
- outb(val | mask, port);
- }
-}
-
-/*
- * Common IRQ routing practice: nybbles in config space,
- * offset by some magic constant.
- */
-static unsigned int read_config_nybble(struct pci_dev *router, unsigned
offset, unsigned nr)
-{
- u8 x;
- unsigned reg = offset + (nr >> 1);
-
- pci_read_config_byte(router, reg, &x);
- return (nr & 1) ? (x >> 4) : (x & 0xf);
-}
-
-static void write_config_nybble(struct pci_dev *router, unsigned offset,
unsigned nr, unsigned int val)
-{
- u8 x;
- unsigned reg = offset + (nr >> 1);
-
- pci_read_config_byte(router, reg, &x);
- x = (nr & 1) ? ((x & 0x0f) | (val << 4)) : ((x & 0xf0) | val);
- pci_write_config_byte(router, reg, x);
-}
-
-/*
- * ALI pirq entries are damn ugly, and completely undocumented.
- * This has been figured out from pirq tables, and it's not a pretty
- * picture.
- */
-static int pirq_ali_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
-{
- static unsigned char irqmap[16] = { 0, 9, 3, 10, 4, 5, 7, 6, 1, 11, 0,
12, 0, 14, 0, 15 };
-
- return irqmap[read_config_nybble(router, 0x48, pirq-1)];
-}
-
-static int pirq_ali_set(struct pci_dev *router, struct pci_dev *dev, int pirq,
int irq)
-{
- static unsigned char irqmap[16] = { 0, 8, 0, 2, 4, 5, 7, 6, 0, 1, 3, 9,
11, 0, 13, 15 };
- unsigned int val = irqmap[irq];
-
- if (val) {
- write_config_nybble(router, 0x48, pirq-1, val);
- return 1;
- }
- return 0;
-}
-
-/*
- * The Intel PIIX4 pirq rules are fairly simple: "pirq" is
- * just a pointer to the config space.
- */
-static int pirq_piix_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
-{
- u8 x;
-
- pci_read_config_byte(router, pirq, &x);
- return (x < 16) ? x : 0;
-}
-
-static int pirq_piix_set(struct pci_dev *router, struct pci_dev *dev, int
pirq, int irq)
-{
- pci_write_config_byte(router, pirq, irq);
- return 1;
-}
-
-/*
- * The VIA pirq rules are nibble-based, like ALI,
- * but without the ugly irq number munging.
- * However, PIRQD is in the upper instead of lower 4 bits.
- */
-static int pirq_via_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
-{
- return read_config_nybble(router, 0x55, pirq == 4 ? 5 : pirq);
-}
-
-static int pirq_via_set(struct pci_dev *router, struct pci_dev *dev, int pirq,
int irq)
-{
- write_config_nybble(router, 0x55, pirq == 4 ? 5 : pirq, irq);
- return 1;
-}
-
-/*
- * ITE 8330G pirq rules are nibble-based
- * FIXME: pirqmap may be { 1, 0, 3, 2 },
- * 2+3 are both mapped to irq 9 on my system
- */
-static int pirq_ite_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
-{
- static unsigned char pirqmap[4] = { 1, 0, 2, 3 };
- return read_config_nybble(router,0x43, pirqmap[pirq-1]);
-}
-
-static int pirq_ite_set(struct pci_dev *router, struct pci_dev *dev, int pirq,
int irq)
-{
- static unsigned char pirqmap[4] = { 1, 0, 2, 3 };
- write_config_nybble(router, 0x43, pirqmap[pirq-1], irq);
- return 1;
-}
-
-/*
- * OPTI: high four bits are nibble pointer..
- * I wonder what the low bits do?
- */
-static int pirq_opti_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
-{
- return read_config_nybble(router, 0xb8, pirq >> 4);
-}
-
-static int pirq_opti_set(struct pci_dev *router, struct pci_dev *dev, int
pirq, int irq)
-{
- write_config_nybble(router, 0xb8, pirq >> 4, irq);
- return 1;
-}
-
-/*
- * Cyrix: nibble offset 0x5C
- * 0x5C bits 7:4 is INTB bits 3:0 is INTA
- * 0x5D bits 7:4 is INTD bits 3:0 is INTC
- */
-static int pirq_cyrix_get(struct pci_dev *router, struct pci_dev *dev, int
pirq)
-{
- return read_config_nybble(router, 0x5C, (pirq-1)^1);
-}
-
-static int pirq_cyrix_set(struct pci_dev *router, struct pci_dev *dev, int
pirq, int irq)
-{
- write_config_nybble(router, 0x5C, (pirq-1)^1, irq);
- return 1;
-}
-
-/*
- * PIRQ routing for SiS 85C503 router used in several SiS chipsets.
- * We have to deal with the following issues here:
- * - vendors have different ideas about the meaning of link values
- * - some onboard devices (integrated in the chipset) have special
- * links and are thus routed differently (i.e. not via PCI INTA-INTD)
- * - different revision of the router have a different layout for
- * the routing registers, particularly for the onchip devices
- *
- * For all routing registers the common thing is we have one byte
- * per routeable link which is defined as:
- * bit 7 IRQ mapping enabled (0) or disabled (1)
- * bits [6:4] reserved (sometimes used for onchip devices)
- * bits [3:0] IRQ to map to
- * allowed: 3-7, 9-12, 14-15
- * reserved: 0, 1, 2, 8, 13
- *
- * The config-space registers located at 0x41/0x42/0x43/0x44 are
- * always used to route the normal PCI INT A/B/C/D respectively.
- * Apparently there are systems implementing PCI routing table using
- * link values 0x01-0x04 and others using 0x41-0x44 for PCI INTA..D.
- * We try our best to handle both link mappings.
- *
- * Currently (2003-05-21) it appears most SiS chipsets follow the
- * definition of routing registers from the SiS-5595 southbridge.
- * According to the SiS 5595 datasheets the revision id's of the
- * router (ISA-bridge) should be 0x01 or 0xb0.
- *
- * Furthermore we've also seen lspci dumps with revision 0x00 and 0xb1.
- * Looks like these are used in a number of SiS 5xx/6xx/7xx chipsets.
- * They seem to work with the current routing code. However there is
- * some concern because of the two USB-OHCI HCs (original SiS 5595
- * had only one). YMMV.
- *
- * Onchip routing for router rev-id 0x01/0xb0 and probably 0x00/0xb1:
- *
- * 0x61: IDEIRQ:
- * bits [6:5] must be written 01
- * bit 4 channel-select primary (0), secondary (1)
- *
- * 0x62: USBIRQ:
- * bit 6 OHCI function disabled (0), enabled (1)
- *
- * 0x6a: ACPI/SCI IRQ: bits 4-6 reserved
- *
- * 0x7e: Data Acq. Module IRQ - bits 4-6 reserved
- *
- * We support USBIRQ (in addition to INTA-INTD) and keep the
- * IDE, ACPI and DAQ routing untouched as set by the BIOS.
- *
- * Currently the only reported exception is the new SiS 65x chipset
- * which includes the SiS 69x southbridge. Here we have the 85C503
- * router revision 0x04 and there are changes in the register layout
- * mostly related to the different USB HCs with USB 2.0 support.
- *
- * Onchip routing for router rev-id 0x04 (try-and-error observation)
- *
- * 0x60/0x61/0x62/0x63: 1xEHCI and 3xOHCI (companion) USB-HCs
- * bit 6-4 are probably unused, not like 5595
- */
-
-#define PIRQ_SIS_IRQ_MASK 0x0f
-#define PIRQ_SIS_IRQ_DISABLE 0x80
-#define PIRQ_SIS_USB_ENABLE 0x40
-
-static int pirq_sis_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
-{
- u8 x;
- int reg;
-
- reg = pirq;
- if (reg >= 0x01 && reg <= 0x04)
- reg += 0x40;
- pci_read_config_byte(router, reg, &x);
- return (x & PIRQ_SIS_IRQ_DISABLE) ? 0 : (x & PIRQ_SIS_IRQ_MASK);
-}
-
-static int pirq_sis_set(struct pci_dev *router, struct pci_dev *dev, int pirq,
int irq)
-{
- u8 x;
- int reg;
-
- reg = pirq;
- if (reg >= 0x01 && reg <= 0x04)
- reg += 0x40;
- pci_read_config_byte(router, reg, &x);
- x &= ~(PIRQ_SIS_IRQ_MASK | PIRQ_SIS_IRQ_DISABLE);
- x |= irq ? irq: PIRQ_SIS_IRQ_DISABLE;
- pci_write_config_byte(router, reg, x);
- return 1;
-}
-
-
-/*
- * VLSI: nibble offset 0x74 - educated guess due to routing table and
- * config space of VLSI 82C534 PCI-bridge/router (1004:0102)
- * Tested on HP OmniBook 800 covering PIRQ 1, 2, 4, 8 for onboard
- * devices, PIRQ 3 for non-pci(!) soundchip and (untested) PIRQ 6
- * for the busbridge to the docking station.
- */
-
-static int pirq_vlsi_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
-{
- if (pirq > 8) {
- printk(KERN_INFO "VLSI router pirq escape (%d)\n", pirq);
- return 0;
- }
- return read_config_nybble(router, 0x74, pirq-1);
-}
-
-static int pirq_vlsi_set(struct pci_dev *router, struct pci_dev *dev, int
pirq, int irq)
-{
- if (pirq > 8) {
- printk(KERN_INFO "VLSI router pirq escape (%d)\n", pirq);
- return 0;
- }
- write_config_nybble(router, 0x74, pirq-1, irq);
- return 1;
-}
-
-/*
- * ServerWorks: PCI interrupts mapped to system IRQ lines through Index
- * and Redirect I/O registers (0x0c00 and 0x0c01). The Index register
- * format is (PCIIRQ## | 0x10), e.g.: PCIIRQ10=0x1a. The Redirect
- * register is a straight binary coding of desired PIC IRQ (low nibble).
- *
- * The 'link' value in the PIRQ table is already in the correct format
- * for the Index register. There are some special index values:
- * 0x00 for ACPI (SCI), 0x01 for USB, 0x02 for IDE0, 0x04 for IDE1,
- * and 0x03 for SMBus.
- */
-static int pirq_serverworks_get(struct pci_dev *router, struct pci_dev *dev,
int pirq)
-{
- outb_p(pirq, 0xc00);
- return inb(0xc01) & 0xf;
-}
-
-static int pirq_serverworks_set(struct pci_dev *router, struct pci_dev *dev,
int pirq, int irq)
-{
- outb_p(pirq, 0xc00);
- outb_p(irq, 0xc01);
- return 1;
-}
-
-/* Support for AMD756 PCI IRQ Routing
- * Jhon H. Caicedo <jhcaiced@xxxxxxxxxxx>
- * Jun/21/2001 0.2.0 Release, fixed to use "nybble" functions... (jhcaiced)
- * Jun/19/2001 Alpha Release 0.1.0 (jhcaiced)
- * The AMD756 pirq rules are nibble-based
- * offset 0x56 0-3 PIRQA 4-7 PIRQB
- * offset 0x57 0-3 PIRQC 4-7 PIRQD
- */
-static int pirq_amd756_get(struct pci_dev *router, struct pci_dev *dev, int
pirq)
-{
- u8 irq;
- irq = 0;
- if (pirq <= 4)
- {
- irq = read_config_nybble(router, 0x56, pirq - 1);
- }
- printk(KERN_INFO "AMD756: dev %04x:%04x, router pirq : %d get irq :
%2d\n",
- dev->vendor, dev->device, pirq, irq);
- return irq;
-}
-
-static int pirq_amd756_set(struct pci_dev *router, struct pci_dev *dev, int
pirq, int irq)
-{
- printk(KERN_INFO "AMD756: dev %04x:%04x, router pirq : %d SET irq :
%2d\n",
- dev->vendor, dev->device, pirq, irq);
- if (pirq <= 4)
- {
- write_config_nybble(router, 0x56, pirq - 1, irq);
- }
- return 1;
-}
-
-#ifdef CONFIG_PCI_BIOS
-
-static int pirq_bios_set(struct pci_dev *router, struct pci_dev *dev, int
pirq, int irq)
-{
- struct pci_dev *bridge;
- int pin = pci_get_interrupt_pin(dev, &bridge);
- return pcibios_set_irq_routing(bridge, pin, irq);
-}
-
-#endif
-
-static __init int intel_router_probe(struct irq_router *r, struct pci_dev
*router, u16 device)
-{
- static struct pci_device_id pirq_440gx[] = {
- { PCI_DEVICE(PCI_VENDOR_ID_INTEL,
PCI_DEVICE_ID_INTEL_82443GX_0) },
- { PCI_DEVICE(PCI_VENDOR_ID_INTEL,
PCI_DEVICE_ID_INTEL_82443GX_2) },
- { },
- };
-
- /* 440GX has a proprietary PIRQ router -- don't use it */
- if (pci_dev_present(pirq_440gx))
- return 0;
-
- switch(device)
- {
- case PCI_DEVICE_ID_INTEL_82371FB_0:
- case PCI_DEVICE_ID_INTEL_82371SB_0:
- case PCI_DEVICE_ID_INTEL_82371AB_0:
- case PCI_DEVICE_ID_INTEL_82371MX:
- case PCI_DEVICE_ID_INTEL_82443MX_0:
- case PCI_DEVICE_ID_INTEL_82801AA_0:
- case PCI_DEVICE_ID_INTEL_82801AB_0:
- case PCI_DEVICE_ID_INTEL_82801BA_0:
- case PCI_DEVICE_ID_INTEL_82801BA_10:
- case PCI_DEVICE_ID_INTEL_82801CA_0:
- case PCI_DEVICE_ID_INTEL_82801CA_12:
- case PCI_DEVICE_ID_INTEL_82801DB_0:
- case PCI_DEVICE_ID_INTEL_82801E_0:
- case PCI_DEVICE_ID_INTEL_82801EB_0:
- case PCI_DEVICE_ID_INTEL_ESB_1:
- case PCI_DEVICE_ID_INTEL_ICH6_0:
- case PCI_DEVICE_ID_INTEL_ICH6_1:
- case PCI_DEVICE_ID_INTEL_ICH7_0:
- case PCI_DEVICE_ID_INTEL_ICH7_1:
- r->name = "PIIX/ICH";
- r->get = pirq_piix_get;
- r->set = pirq_piix_set;
- return 1;
- }
- return 0;
-}
-
-static __init int via_router_probe(struct irq_router *r, struct pci_dev
*router, u16 device)
-{
- /* FIXME: We should move some of the quirk fixup stuff here */
- switch(device)
- {
- case PCI_DEVICE_ID_VIA_82C586_0:
- case PCI_DEVICE_ID_VIA_82C596:
- case PCI_DEVICE_ID_VIA_82C686:
- case PCI_DEVICE_ID_VIA_8231:
- /* FIXME: add new ones for 8233/5 */
- r->name = "VIA";
- r->get = pirq_via_get;
- r->set = pirq_via_set;
- return 1;
- }
- return 0;
-}
-
-static __init int vlsi_router_probe(struct irq_router *r, struct pci_dev
*router, u16 device)
-{
- switch(device)
- {
- case PCI_DEVICE_ID_VLSI_82C534:
- r->name = "VLSI 82C534";
- r->get = pirq_vlsi_get;
- r->set = pirq_vlsi_set;
- return 1;
- }
- return 0;
-}
-
-
-static __init int serverworks_router_probe(struct irq_router *r, struct
pci_dev *router, u16 device)
-{
- switch(device)
- {
- case PCI_DEVICE_ID_SERVERWORKS_OSB4:
- case PCI_DEVICE_ID_SERVERWORKS_CSB5:
- r->name = "ServerWorks";
- r->get = pirq_serverworks_get;
- r->set = pirq_serverworks_set;
- return 1;
- }
- return 0;
-}
-
-static __init int sis_router_probe(struct irq_router *r, struct pci_dev
*router, u16 device)
-{
- if (device != PCI_DEVICE_ID_SI_503)
- return 0;
-
- r->name = "SIS";
- r->get = pirq_sis_get;
- r->set = pirq_sis_set;
- return 1;
-}
-
-static __init int cyrix_router_probe(struct irq_router *r, struct pci_dev
*router, u16 device)
-{
- switch(device)
- {
- case PCI_DEVICE_ID_CYRIX_5520:
- r->name = "NatSemi";
- r->get = pirq_cyrix_get;
- r->set = pirq_cyrix_set;
- return 1;
- }
- return 0;
-}
-
-static __init int opti_router_probe(struct irq_router *r, struct pci_dev
*router, u16 device)
-{
- switch(device)
- {
- case PCI_DEVICE_ID_OPTI_82C700:
- r->name = "OPTI";
- r->get = pirq_opti_get;
- r->set = pirq_opti_set;
- return 1;
- }
- return 0;
-}
-
-static __init int ite_router_probe(struct irq_router *r, struct pci_dev
*router, u16 device)
-{
- switch(device)
- {
- case PCI_DEVICE_ID_ITE_IT8330G_0:
- r->name = "ITE";
- r->get = pirq_ite_get;
- r->set = pirq_ite_set;
- return 1;
- }
- return 0;
-}
-
-static __init int ali_router_probe(struct irq_router *r, struct pci_dev
*router, u16 device)
-{
- switch(device)
- {
- case PCI_DEVICE_ID_AL_M1533:
- case PCI_DEVICE_ID_AL_M1563:
- printk("PCI: Using ALI IRQ Router\n");
- r->name = "ALI";
- r->get = pirq_ali_get;
- r->set = pirq_ali_set;
- return 1;
- }
- return 0;
-}
-
-static __init int amd_router_probe(struct irq_router *r, struct pci_dev
*router, u16 device)
-{
- switch(device)
- {
- case PCI_DEVICE_ID_AMD_VIPER_740B:
- r->name = "AMD756";
- break;
- case PCI_DEVICE_ID_AMD_VIPER_7413:
- r->name = "AMD766";
- break;
- case PCI_DEVICE_ID_AMD_VIPER_7443:
- r->name = "AMD768";
- break;
- default:
- return 0;
- }
- r->get = pirq_amd756_get;
- r->set = pirq_amd756_set;
- return 1;
-}
-
-static __initdata struct irq_router_handler pirq_routers[] = {
- { PCI_VENDOR_ID_INTEL, intel_router_probe },
- { PCI_VENDOR_ID_AL, ali_router_probe },
- { PCI_VENDOR_ID_ITE, ite_router_probe },
- { PCI_VENDOR_ID_VIA, via_router_probe },
- { PCI_VENDOR_ID_OPTI, opti_router_probe },
- { PCI_VENDOR_ID_SI, sis_router_probe },
- { PCI_VENDOR_ID_CYRIX, cyrix_router_probe },
- { PCI_VENDOR_ID_VLSI, vlsi_router_probe },
- { PCI_VENDOR_ID_SERVERWORKS, serverworks_router_probe },
- { PCI_VENDOR_ID_AMD, amd_router_probe },
- /* Someone with docs needs to add the ATI Radeon IGP */
- { 0, NULL }
-};
-static struct irq_router pirq_router;
-static struct pci_dev *pirq_router_dev;
-
-
-/*
- * FIXME: should we have an option to say "generic for
- * chipset" ?
- */
-
-static void __init pirq_find_router(struct irq_router *r)
-{
- struct irq_routing_table *rt = pirq_table;
- struct irq_router_handler *h;
-
-#ifdef CONFIG_PCI_BIOS
- if (!rt->signature) {
- printk(KERN_INFO "PCI: Using BIOS for IRQ routing\n");
- r->set = pirq_bios_set;
- r->name = "BIOS";
- return;
- }
-#endif
-
- /* Default unless a driver reloads it */
- r->name = "default";
- r->get = NULL;
- r->set = NULL;
-
- DBG("PCI: Attempting to find IRQ router for %04x:%04x\n",
- rt->rtr_vendor, rt->rtr_device);
-
- pirq_router_dev = pci_find_slot(rt->rtr_bus, rt->rtr_devfn);
- if (!pirq_router_dev) {
- DBG("PCI: Interrupt router not found at %02x:%02x\n",
rt->rtr_bus, rt->rtr_devfn);
- return;
- }
-
- for( h = pirq_routers; h->vendor; h++) {
- /* First look for a router match */
- if (rt->rtr_vendor == h->vendor && h->probe(r, pirq_router_dev,
rt->rtr_device))
- break;
- /* Fall back to a device match */
- if (pirq_router_dev->vendor == h->vendor && h->probe(r,
pirq_router_dev, pirq_router_dev->device))
- break;
- }
- printk(KERN_INFO "PCI: Using IRQ router %s [%04x/%04x] at %s\n",
- pirq_router.name,
- pirq_router_dev->vendor,
- pirq_router_dev->device,
- pci_name(pirq_router_dev));
-}
-
-static struct irq_info *pirq_get_info(struct pci_dev *dev)
-{
- struct irq_routing_table *rt = pirq_table;
- int entries = (rt->size - sizeof(struct irq_routing_table)) /
sizeof(struct irq_info);
- struct irq_info *info;
-
- for (info = rt->slots; entries--; info++)
- if (info->bus == dev->bus->number && PCI_SLOT(info->devfn) ==
PCI_SLOT(dev->devfn))
- return info;
- return NULL;
-}
-
-static int pcibios_lookup_irq(struct pci_dev *dev, int assign)
-{
- u8 pin;
- struct irq_info *info;
- int i, pirq, newirq;
- int irq = 0;
- u32 mask;
- struct irq_router *r = &pirq_router;
- struct pci_dev *dev2 = NULL;
- char *msg = NULL;
-
- /* Find IRQ pin */
- pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
- if (!pin) {
- DBG(" -> no interrupt pin\n");
- return 0;
- }
- pin = pin - 1;
-
- /* Find IRQ routing entry */
-
- if (!pirq_table)
- return 0;
-
- DBG("IRQ for %s[%c]", pci_name(dev), 'A' + pin);
- info = pirq_get_info(dev);
- if (!info) {
- DBG(" -> not found in routing table\n");
- return 0;
- }
- pirq = info->irq[pin].link;
- mask = info->irq[pin].bitmap;
- if (!pirq) {
- DBG(" -> not routed\n");
- return 0;
- }
- DBG(" -> PIRQ %02x, mask %04x, excl %04x", pirq, mask,
pirq_table->exclusive_irqs);
- mask &= pcibios_irq_mask;
-
- /* Work around broken HP Pavilion Notebooks which assign USB to
- IRQ 9 even though it is actually wired to IRQ 11 */
-
- if (broken_hp_bios_irq9 && pirq == 0x59 && dev->irq == 9) {
- dev->irq = 11;
- pci_write_config_byte(dev, PCI_INTERRUPT_LINE, 11);
- r->set(pirq_router_dev, dev, pirq, 11);
- }
-
- /* same for Acer Travelmate 360, but with CB and irq 11 -> 10 */
- if (acer_tm360_irqrouting && dev->irq == 11 && dev->vendor ==
PCI_VENDOR_ID_O2) {
- pirq = 0x68;
- mask = 0x400;
- dev->irq = r->get(pirq_router_dev, dev, pirq);
- pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
- }
-
- /*
- * Find the best IRQ to assign: use the one
- * reported by the device if possible.
- */
- newirq = dev->irq;
- if (!((1 << newirq) & mask)) {
- if ( pci_probe & PCI_USE_PIRQ_MASK) newirq = 0;
- else printk(KERN_WARNING "PCI: IRQ %i for device %s doesn't
match PIRQ mask - try pci=usepirqmask\n", newirq, pci_name(dev));
- }
- if (!newirq && assign) {
- for (i = 0; i < 16; i++) {
- if (!(mask & (1 << i)))
- continue;
- if (pirq_penalty[i] < pirq_penalty[newirq] &&
can_request_irq(i, SA_SHIRQ))
- newirq = i;
- }
- }
- DBG(" -> newirq=%d", newirq);
-
- /* Check if it is hardcoded */
- if ((pirq & 0xf0) == 0xf0) {
- irq = pirq & 0xf;
- DBG(" -> hardcoded IRQ %d\n", irq);
- msg = "Hardcoded";
- } else if ( r->get && (irq = r->get(pirq_router_dev, dev, pirq)) && \
- ((!(pci_probe & PCI_USE_PIRQ_MASK)) || ((1 << irq) & mask)) ) {
- DBG(" -> got IRQ %d\n", irq);
- msg = "Found";
- } else if (newirq && r->set && (dev->class >> 8) !=
PCI_CLASS_DISPLAY_VGA) {
- DBG(" -> assigning IRQ %d", newirq);
- if (r->set(pirq_router_dev, dev, pirq, newirq)) {
- eisa_set_level_irq(newirq);
- DBG(" ... OK\n");
- msg = "Assigned";
- irq = newirq;
- }
- }
-
- if (!irq) {
- DBG(" ... failed\n");
- if (newirq && mask == (1 << newirq)) {
- msg = "Guessed";
- irq = newirq;
- } else
- return 0;
- }
- printk(KERN_INFO "PCI: %s IRQ %d for device %s\n", msg, irq,
pci_name(dev));
-
- /* Update IRQ for all devices with the same pirq value */
- while ((dev2 = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev2)) != NULL) {
- pci_read_config_byte(dev2, PCI_INTERRUPT_PIN, &pin);
- if (!pin)
- continue;
- pin--;
- info = pirq_get_info(dev2);
- if (!info)
- continue;
- if (info->irq[pin].link == pirq) {
- /* We refuse to override the dev->irq information. Give
a warning! */
- if ( dev2->irq && dev2->irq != irq && \
- (!(pci_probe & PCI_USE_PIRQ_MASK) || \
- ((1 << dev2->irq) & mask)) ) {
-#ifndef CONFIG_PCI_MSI
- printk(KERN_INFO "IRQ routing conflict for %s,
have irq %d, want irq %d\n",
- pci_name(dev2), dev2->irq, irq);
-#endif
- continue;
- }
- dev2->irq = irq;
- pirq_penalty[irq]++;
- if (dev != dev2)
- printk(KERN_INFO "PCI: Sharing IRQ %d with
%s\n", irq, pci_name(dev2));
- }
- }
- return 1;
-}
-
-static void __init pcibios_fixup_irqs(void)
-{
- struct pci_dev *dev = NULL;
- u8 pin;
-
- DBG("PCI: IRQ fixup\n");
- while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
- /*
- * If the BIOS has set an out of range IRQ number, just ignore
it.
- * Also keep track of which IRQ's are already in use.
- */
- if (dev->irq >= 16) {
- DBG("%s: ignoring bogus IRQ %d\n", pci_name(dev),
dev->irq);
- dev->irq = 0;
- }
- /* If the IRQ is already assigned to a PCI device, ignore its
ISA use penalty */
- if (pirq_penalty[dev->irq] >= 100 && pirq_penalty[dev->irq] <
100000)
- pirq_penalty[dev->irq] = 0;
- pirq_penalty[dev->irq]++;
- }
-
- dev = NULL;
- while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
- pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
-#ifdef CONFIG_X86_IO_APIC
- /*
- * Recalculate IRQ numbers if we use the I/O APIC.
- */
- if (io_apic_assign_pci_irqs)
- {
- int irq;
-
- if (pin) {
- pin--; /* interrupt pins are numbered
starting from 1 */
- irq =
IO_APIC_get_PCI_irq_vector(dev->bus->number, PCI_SLOT(dev->devfn), pin);
- /*
- * Busses behind bridges are typically not listed in the MP-table.
- * In this case we have to look up the IRQ based on the parent bus,
- * parent slot, and pin number. The SMP code detects such bridged
- * busses itself so we should get into this branch reliably.
- */
- if (irq < 0 && dev->bus->parent) { /* go back
to the bridge */
- struct pci_dev * bridge =
dev->bus->self;
-
- pin = (pin + PCI_SLOT(dev->devfn)) % 4;
- irq =
IO_APIC_get_PCI_irq_vector(bridge->bus->number,
-
PCI_SLOT(bridge->devfn), pin);
- if (irq >= 0)
- printk(KERN_WARNING "PCI: using
PPB %s[%c] to get irq %d\n",
- pci_name(bridge), 'A' +
pin, irq);
- }
- if (irq >= 0) {
- if (use_pci_vector() &&
- !platform_legacy_irq(irq))
- irq = IO_APIC_VECTOR(irq);
-
- printk(KERN_INFO "PCI->APIC IRQ
transform: %s[%c] -> IRQ %d\n",
- pci_name(dev), 'A' + pin, irq);
- dev->irq = irq;
- }
- }
- }
-#endif
- /*
- * Still no IRQ? Try to lookup one...
- */
- if (pin && !dev->irq)
- pcibios_lookup_irq(dev, 0);
- }
-}
-
-/*
- * Work around broken HP Pavilion Notebooks which assign USB to
- * IRQ 9 even though it is actually wired to IRQ 11
- */
-static int __init fix_broken_hp_bios_irq9(struct dmi_system_id *d)
-{
- if (!broken_hp_bios_irq9) {
- broken_hp_bios_irq9 = 1;
- printk(KERN_INFO "%s detected - fixing broken IRQ routing\n",
d->ident);
- }
- return 0;
-}
-
-/*
- * Work around broken Acer TravelMate 360 Notebooks which assign
- * Cardbus to IRQ 11 even though it is actually wired to IRQ 10
- */
-static int __init fix_acer_tm360_irqrouting(struct dmi_system_id *d)
-{
- if (!acer_tm360_irqrouting) {
- acer_tm360_irqrouting = 1;
- printk(KERN_INFO "%s detected - fixing broken IRQ routing\n",
d->ident);
- }
- return 0;
-}
-
-static struct dmi_system_id __initdata pciirq_dmi_table[] = {
- {
- .callback = fix_broken_hp_bios_irq9,
- .ident = "HP Pavilion N5400 Series Laptop",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
- DMI_MATCH(DMI_BIOS_VERSION, "GE.M1.03"),
- DMI_MATCH(DMI_PRODUCT_VERSION, "HP Pavilion Notebook
Model GE"),
- DMI_MATCH(DMI_BOARD_VERSION, "OmniBook N32N-736"),
- },
- },
- {
- .callback = fix_acer_tm360_irqrouting,
- .ident = "Acer TravelMate 36x Laptop",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
- DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
- },
- },
- { }
-};
-
-static int __init pcibios_irq_init(void)
-{
- DBG("PCI: IRQ init\n");
-
- if (pcibios_enable_irq || raw_pci_ops == NULL)
- return 0;
-
- dmi_check_system(pciirq_dmi_table);
-
- pirq_table = pirq_find_routing_table();
-
-#ifdef CONFIG_PCI_BIOS
- if (!pirq_table && (pci_probe & PCI_BIOS_IRQ_SCAN))
- pirq_table = pcibios_get_irq_routing_table();
-#endif
- if (pirq_table) {
- pirq_peer_trick();
- pirq_find_router(&pirq_router);
- if (pirq_table->exclusive_irqs) {
- int i;
- for (i=0; i<16; i++)
- if (!(pirq_table->exclusive_irqs & (1 << i)))
- pirq_penalty[i] += 100;
- }
- /* If we're using the I/O APIC, avoid using the PCI IRQ routing
table */
- if (io_apic_assign_pci_irqs)
- pirq_table = NULL;
- }
-
- pcibios_enable_irq = pirq_enable_irq;
-
- pcibios_fixup_irqs();
- return 0;
-}
-
-subsys_initcall(pcibios_irq_init);
-
-
-static void pirq_penalize_isa_irq(int irq)
-{
- /*
- * If any ISAPnP device reports an IRQ in its list of possible
- * IRQ's, we try to avoid assigning it to PCI devices.
- */
- if (irq < 16)
- pirq_penalty[irq] += 100;
-}
-
-void pcibios_penalize_isa_irq(int irq)
-{
-#ifdef CONFIG_ACPI_PCI
- if (!acpi_noirq)
- acpi_penalize_isa_irq(irq);
- else
-#endif
- pirq_penalize_isa_irq(irq);
-}
-
-static int pirq_enable_irq(struct pci_dev *dev)
-{
- u8 pin;
- extern int via_interrupt_line_quirk;
- struct pci_dev *temp_dev;
-
- pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
- if (pin && !pcibios_lookup_irq(dev, 1) && !dev->irq) {
- char *msg;
- msg = "";
- if (io_apic_assign_pci_irqs) {
- int irq;
-
- if (pin) {
- pin--; /* interrupt pins are numbered
starting from 1 */
- irq =
IO_APIC_get_PCI_irq_vector(dev->bus->number, PCI_SLOT(dev->devfn), pin);
- /*
- * Busses behind bridges are typically not
listed in the MP-table.
- * In this case we have to look up the IRQ
based on the parent bus,
- * parent slot, and pin number. The SMP code
detects such bridged
- * busses itself so we should get into this
branch reliably.
- */
- temp_dev = dev;
- while (irq < 0 && dev->bus->parent) { /* go
back to the bridge */
- struct pci_dev * bridge =
dev->bus->self;
-
- pin = (pin + PCI_SLOT(dev->devfn)) % 4;
- irq =
IO_APIC_get_PCI_irq_vector(bridge->bus->number,
-
PCI_SLOT(bridge->devfn), pin);
- if (irq >= 0)
- printk(KERN_WARNING "PCI: using
PPB %s[%c] to get irq %d\n",
- pci_name(bridge), 'A' +
pin, irq);
- dev = bridge;
- }
- dev = temp_dev;
- if (irq >= 0) {
-#ifdef CONFIG_PCI_MSI
- if (!platform_legacy_irq(irq))
- irq = IO_APIC_VECTOR(irq);
-#endif
- printk(KERN_INFO "PCI->APIC IRQ
transform: %s[%c] -> IRQ %d\n",
- pci_name(dev), 'A' + pin, irq);
- dev->irq = irq;
- return 0;
- } else
- msg = " Probably buggy MP table.";
- }
- } else if (pci_probe & PCI_BIOS_IRQ_SCAN)
- msg = "";
- else
- msg = " Please try using pci=biosirq.";
-
- /* With IDE legacy devices the IRQ lookup failure is not a
problem.. */
- if (dev->class >> 8 == PCI_CLASS_STORAGE_IDE && !(dev->class &
0x5))
- return 0;
-
- printk(KERN_WARNING "PCI: No IRQ known for interrupt pin %c of
device %s.%s\n",
- 'A' + pin - 1, pci_name(dev), msg);
- }
- /* VIA bridges use interrupt line for apic/pci steering across
- the V-Link */
- else if (via_interrupt_line_quirk)
- pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq & 15);
- return 0;
-}
-
-int pci_vector_resources(int last, int nr_released)
-{
- int count = nr_released;
-
- int next = last;
- int offset = (last % 8);
-
- while (next < FIRST_SYSTEM_VECTOR) {
- next += 8;
-#ifdef CONFIG_X86_64
- if (next == IA32_SYSCALL_VECTOR)
- continue;
-#else
- if (next == SYSCALL_VECTOR)
- continue;
-#endif
- count++;
- if (next >= FIRST_SYSTEM_VECTOR) {
- if (offset%8) {
- next = FIRST_DEVICE_VECTOR + offset;
- offset++;
- continue;
- }
- count--;
- }
- }
-
- return count;
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/kernel/Makefile
--- a/linux-2.6.11-xen-sparse/arch/xen/kernel/Makefile Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,18 +0,0 @@
-#
-# Makefile for the linux kernel.
-#
-
-XENARCH := $(subst ",,$(CONFIG_XENARCH))
-
-CPPFLAGS_vmlinux.lds += -U$(XENARCH)
-
-$(obj)/vmlinux.lds.S:
- @ln -fsn $(srctree)/arch/$(XENARCH)/kernel/vmlinux.lds.S $@
-
-extra-y += vmlinux.lds
-
-obj-y := ctrl_if.o evtchn.o fixup.o reboot.o gnttab.o devmem.o
-
-obj-$(CONFIG_PROC_FS) += xen_proc.o
-obj-$(CONFIG_NET) += skbuff.o
-obj-$(CONFIG_SMP) += smp.o
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/kernel/devmem.c
--- a/linux-2.6.11-xen-sparse/arch/xen/kernel/devmem.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,158 +0,0 @@
-/*
- * Originally from linux/drivers/char/mem.c
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- *
- * Added devfs support.
- * Jan-11-1998, C. Scott Ananian <cananian@xxxxxxxxxxxxxxxxxxxx>
- * Shared /dev/zero mmaping support, Feb 2000, Kanoj Sarcar <kanoj@xxxxxxx>
- */
-
-#include <linux/config.h>
-#include <linux/mm.h>
-#include <linux/miscdevice.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/mman.h>
-#include <linux/random.h>
-#include <linux/init.h>
-#include <linux/raw.h>
-#include <linux/tty.h>
-#include <linux/capability.h>
-#include <linux/smp_lock.h>
-#include <linux/devfs_fs_kernel.h>
-#include <linux/ptrace.h>
-#include <linux/device.h>
-#include <asm/pgalloc.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-
-static inline int uncached_access(struct file *file, unsigned long addr)
-{
- if (file->f_flags & O_SYNC)
- return 1;
- /* Xen sets correct MTRR type on non-RAM for us. */
- return 0;
-}
-
-/*
- * This funcion reads the *physical* memory. The f_pos points directly to the
- * memory location.
- */
-static ssize_t read_mem(struct file * file, char __user * buf,
- size_t count, loff_t *ppos)
-{
- unsigned long i, p = *ppos;
- ssize_t read = -EFAULT;
- void *v;
-
- if ((v = ioremap(p, count)) == NULL) {
- /*
- * Some programs (e.g., dmidecode) groove off into weird RAM
- * areas where no table scan possibly exist (because Xen will
- * have stomped on them!). These programs get rather upset if
- * we let them know that Xen failed their access, so we fake
- * out a read of all zeroes. :-)
- */
- for (i = 0; i < count; i++)
- if (put_user(0, buf+i))
- return -EFAULT;
- return count;
- }
- if (copy_to_user(buf, v, count))
- goto out;
-
- read = count;
- *ppos += read;
-out:
- iounmap(v);
- return read;
-}
-
-static ssize_t write_mem(struct file * file, const char __user * buf,
- size_t count, loff_t *ppos)
-{
- unsigned long p = *ppos;
- ssize_t written = -EFAULT;
- void *v;
-
- if ((v = ioremap(p, count)) == NULL)
- return -EFAULT;
- if (copy_to_user(v, buf, count))
- goto out;
-
- written = count;
- *ppos += written;
-out:
- iounmap(v);
- return written;
-}
-
-static int mmap_mem(struct file * file, struct vm_area_struct * vma)
-{
- unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
- int uncached;
-
- uncached = uncached_access(file, offset);
- if (uncached)
- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-
- /* Don't try to swap out physical pages.. */
- vma->vm_flags |= VM_RESERVED;
-
- /*
- * Don't dump addresses that are not real memory to a core file.
- */
- if (uncached)
- vma->vm_flags |= VM_IO;
-
- if (io_remap_page_range(vma, vma->vm_start, offset,
- vma->vm_end-vma->vm_start, vma->vm_page_prot))
- return -EAGAIN;
-
- return 0;
-}
-
-/*
- * The memory devices use the full 32/64 bits of the offset, and so we cannot
- * check against negative addresses: they are ok. The return value is weird,
- * though, in that case (0).
- *
- * also note that seeking relative to the "end of file" isn't supported:
- * it has no meaning, so it returns -EINVAL.
- */
-static loff_t memory_lseek(struct file * file, loff_t offset, int orig)
-{
- loff_t ret;
-
- down(&file->f_dentry->d_inode->i_sem);
- switch (orig) {
- case 0:
- file->f_pos = offset;
- ret = file->f_pos;
- force_successful_syscall_return();
- break;
- case 1:
- file->f_pos += offset;
- ret = file->f_pos;
- force_successful_syscall_return();
- break;
- default:
- ret = -EINVAL;
- }
- up(&file->f_dentry->d_inode->i_sem);
- return ret;
-}
-
-static int open_mem(struct inode * inode, struct file * filp)
-{
- return capable(CAP_SYS_RAWIO) ? 0 : -EPERM;
-}
-
-struct file_operations mem_fops = {
- .llseek = memory_lseek,
- .read = read_mem,
- .write = write_mem,
- .mmap = mmap_mem,
- .open = open_mem,
-};
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/kernel/fixup.c
--- a/linux-2.6.11-xen-sparse/arch/xen/kernel/fixup.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,87 +0,0 @@
-/******************************************************************************
- * fixup.c
- *
- * Binary-rewriting of certain IA32 instructions, on notification by Xen.
- * Used to avoid repeated slow emulation of common instructions used by the
- * user-space TLS (Thread-Local Storage) libraries.
- *
- * **** NOTE ****
- * Issues with the binary rewriting have caused it to be removed. Instead
- * we rely on Xen's emulator to boot the kernel, and then print a banner
- * message recommending that the user disables /lib/tls.
- *
- * Copyright (c) 2004, K A Fraser
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <linux/config.h>
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/version.h>
-
-#define DP(_f, _args...) printk(KERN_ALERT " " _f "\n" , ## _args )
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-#define __LINKAGE fastcall
-#else
-#define __LINKAGE asmlinkage
-#endif
-
-__LINKAGE void do_fixup_4gb_segment(struct pt_regs *regs, long error_code)
-{
- static unsigned long printed = 0;
- char info[100];
- int i;
-
- if ( !test_and_set_bit(0, &printed) )
- {
- HYPERVISOR_vm_assist(VMASST_CMD_disable,
- VMASST_TYPE_4gb_segments_notify);
-
- sprintf(info, "%s (pid=%d)", current->comm, current->tgid);
-
- DP("");
- DP("***************************************************************");
- DP("***************************************************************");
- DP("** WARNING: Currently emulating unsupported memory accesses **");
- DP("** in /lib/tls libraries. The emulation is very **");
- DP("** slow. To ensure full performance you should **");
- DP("** execute the following as root: **");
- DP("** mv /lib/tls /lib/tls.disabled **");
- DP("** Offending process: %-38.38s **", info);
- DP("***************************************************************");
- DP("***************************************************************");
- DP("");
-
- for ( i = 5; i > 0; i-- )
- {
- printk("Pausing... %d", i);
- mdelay(1000);
- printk("\b\b\b\b\b\b\b\b\b\b\b\b");
- }
- printk("Continuing...\n\n");
- }
-}
-
-static int __init fixup_init(void)
-{
- HYPERVISOR_vm_assist(VMASST_CMD_enable, VMASST_TYPE_4gb_segments_notify);
- return 0;
-}
-__initcall(fixup_init);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/kernel/gnttab.c
--- a/linux-2.6.11-xen-sparse/arch/xen/kernel/gnttab.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,390 +0,0 @@
-/******************************************************************************
- * gnttab.c
- *
- * Two sets of functionality:
- * 1. Granting foreign access to our memory reservation.
- * 2. Accessing others' memory reservations via grant references.
- * (i.e., mechanisms for both sender and recipient of grant references)
- *
- * Copyright (c) 2005, Christopher Clark
- * Copyright (c) 2004, K A Fraser
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <asm/pgtable.h>
-#include <asm/fixmap.h>
-#include <asm/uaccess.h>
-#include <asm-xen/xen_proc.h>
-#include <asm-xen/linux-public/privcmd.h>
-#include <asm-xen/gnttab.h>
-#include <asm-xen/synch_bitops.h>
-
-#if 1
-#define ASSERT(_p) \
- if ( !(_p) ) { printk(KERN_ALERT"Assertion '%s': line %d, file %s\n", \
- #_p , __LINE__, __FILE__); *(int*)0=0; }
-#else
-#define ASSERT(_p) ((void)0)
-#endif
-
-#define WPRINTK(fmt, args...) \
- printk(KERN_WARNING "xen_grant: " fmt, ##args)
-
-
-EXPORT_SYMBOL(gnttab_grant_foreign_access);
-EXPORT_SYMBOL(gnttab_end_foreign_access);
-EXPORT_SYMBOL(gnttab_query_foreign_access);
-EXPORT_SYMBOL(gnttab_grant_foreign_transfer);
-EXPORT_SYMBOL(gnttab_end_foreign_transfer);
-EXPORT_SYMBOL(gnttab_alloc_grant_references);
-EXPORT_SYMBOL(gnttab_free_grant_references);
-EXPORT_SYMBOL(gnttab_claim_grant_reference);
-EXPORT_SYMBOL(gnttab_release_grant_reference);
-EXPORT_SYMBOL(gnttab_grant_foreign_access_ref);
-EXPORT_SYMBOL(gnttab_grant_foreign_transfer_ref);
-
-static grant_ref_t gnttab_free_list[NR_GRANT_ENTRIES];
-static grant_ref_t gnttab_free_head;
-
-static grant_entry_t *shared;
-
-/*
- * Lock-free grant-entry allocator
- */
-
-static inline int
-get_free_entry(
- void)
-{
- grant_ref_t fh, nfh = gnttab_free_head;
- do { if ( unlikely((fh = nfh) == NR_GRANT_ENTRIES) ) return -1; }
- while ( unlikely((nfh = cmpxchg(&gnttab_free_head, fh,
- gnttab_free_list[fh])) != fh) );
- return fh;
-}
-
-static inline void
-put_free_entry(
- grant_ref_t ref)
-{
- grant_ref_t fh, nfh = gnttab_free_head;
- do { gnttab_free_list[ref] = fh = nfh; wmb(); }
- while ( unlikely((nfh = cmpxchg(&gnttab_free_head, fh, ref)) != fh) );
-}
-
-/*
- * Public grant-issuing interface functions
- */
-
-int
-gnttab_grant_foreign_access(
- domid_t domid, unsigned long frame, int readonly)
-{
- int ref;
-
- if ( unlikely((ref = get_free_entry()) == -1) )
- return -ENOSPC;
-
- shared[ref].frame = frame;
- shared[ref].domid = domid;
- wmb();
- shared[ref].flags = GTF_permit_access | (readonly ? GTF_readonly : 0);
-
- return ref;
-}
-
-void
-gnttab_grant_foreign_access_ref(
- grant_ref_t ref, domid_t domid, unsigned long frame, int readonly)
-{
- shared[ref].frame = frame;
- shared[ref].domid = domid;
- wmb();
- shared[ref].flags = GTF_permit_access | (readonly ? GTF_readonly : 0);
-}
-
-
-int
-gnttab_query_foreign_access( grant_ref_t ref )
-{
- u16 nflags;
-
- nflags = shared[ref].flags;
-
- return ( nflags & (GTF_reading|GTF_writing) );
-}
-
-void
-gnttab_end_foreign_access( grant_ref_t ref, int readonly )
-{
- u16 flags, nflags;
-
- nflags = shared[ref].flags;
- do {
- if ( (flags = nflags) & (GTF_reading|GTF_writing) )
- printk(KERN_ALERT "WARNING: g.e. still in use!\n");
- }
- while ( (nflags = synch_cmpxchg(&shared[ref].flags, flags, 0)) != flags );
-
- put_free_entry(ref);
-}
-
-int
-gnttab_grant_foreign_transfer(
- domid_t domid, unsigned long pfn )
-{
- int ref;
-
- if ( unlikely((ref = get_free_entry()) == -1) )
- return -ENOSPC;
-
- shared[ref].frame = pfn;
- shared[ref].domid = domid;
- wmb();
- shared[ref].flags = GTF_accept_transfer;
-
- return ref;
-}
-
-void
-gnttab_grant_foreign_transfer_ref(
- grant_ref_t ref, domid_t domid, unsigned long pfn )
-{
- shared[ref].frame = pfn;
- shared[ref].domid = domid;
- wmb();
- shared[ref].flags = GTF_accept_transfer;
-}
-
-unsigned long
-gnttab_end_foreign_transfer(
- grant_ref_t ref)
-{
- unsigned long frame = 0;
- u16 flags;
-
- flags = shared[ref].flags;
- ASSERT(flags == (GTF_accept_transfer | GTF_transfer_committed));
-
- /*
- * If a transfer is committed then wait for the frame address to appear.
- * Otherwise invalidate the grant entry against future use.
- */
- if ( likely(flags != GTF_accept_transfer) ||
- (synch_cmpxchg(&shared[ref].flags, flags, 0) != GTF_accept_transfer) )
- while ( unlikely((frame = shared[ref].frame) == 0) )
- cpu_relax();
-
- put_free_entry(ref);
-
- return frame;
-}
-
-void
-gnttab_free_grant_references( u16 count, grant_ref_t head )
-{
- /* TODO: O(N)...? */
- grant_ref_t to_die = 0, next = head;
- int i;
-
- for ( i = 0; i < count; i++ )
- {
- to_die = next;
- next = gnttab_free_list[next];
- put_free_entry( to_die );
- }
-}
-
-int
-gnttab_alloc_grant_references( u16 count,
- grant_ref_t *head,
- grant_ref_t *terminal )
-{
- int i;
- grant_ref_t h = gnttab_free_head;
-
- for ( i = 0; i < count; i++ )
- if ( unlikely(get_free_entry() == -1) )
- goto not_enough_refs;
-
- *head = h;
- *terminal = gnttab_free_head;
-
- return 0;
-
-not_enough_refs:
- gnttab_free_head = h;
- return -ENOSPC;
-}
-
-int
-gnttab_claim_grant_reference( grant_ref_t *private_head,
- grant_ref_t terminal )
-{
- grant_ref_t g;
- if ( unlikely((g = *private_head) == terminal) )
- return -ENOSPC;
- *private_head = gnttab_free_list[g];
- return g;
-}
-
-void
-gnttab_release_grant_reference( grant_ref_t *private_head,
- grant_ref_t release )
-{
- gnttab_free_list[release] = *private_head;
- *private_head = release;
-}
-
-/*
- * ProcFS operations
- */
-
-#ifdef CONFIG_PROC_FS
-
-static struct proc_dir_entry *grant_pde;
-
-static int grant_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long data)
-{
- int ret;
- privcmd_hypercall_t hypercall;
-
- /* XXX Need safety checks here if using for anything other
- * than debugging */
- return -ENOSYS;
-
- if ( cmd != IOCTL_PRIVCMD_HYPERCALL )
- return -ENOSYS;
-
- if ( copy_from_user(&hypercall, (void *)data, sizeof(hypercall)) )
- return -EFAULT;
-
- if ( hypercall.op != __HYPERVISOR_grant_table_op )
- return -ENOSYS;
-
- /* hypercall-invoking asm taken from privcmd.c */
- __asm__ __volatile__ (
- "pushl %%ebx; pushl %%ecx; pushl %%edx; pushl %%esi; pushl %%edi; "
- "movl 4(%%eax),%%ebx ;"
- "movl 8(%%eax),%%ecx ;"
- "movl 12(%%eax),%%edx ;"
- "movl 16(%%eax),%%esi ;"
- "movl 20(%%eax),%%edi ;"
- "movl (%%eax),%%eax ;"
- TRAP_INSTR "; "
- "popl %%edi; popl %%esi; popl %%edx; popl %%ecx; popl %%ebx"
- : "=a" (ret) : "0" (&hypercall) : "memory" );
-
- return ret;
-}
-
-static struct file_operations grant_file_ops = {
- ioctl: grant_ioctl,
-};
-
-static int grant_read(char *page, char **start, off_t off,
- int count, int *eof, void *data)
-{
- int len;
- unsigned int i;
- grant_entry_t *gt;
-
- gt = (grant_entry_t *)shared;
- len = 0;
-
- for ( i = 0; i < NR_GRANT_ENTRIES; i++ )
- /* TODO: safety catch here until this can handle >PAGE_SIZE output */
- if (len > (PAGE_SIZE - 200))
- {
- len += sprintf( page + len, "Truncated.\n");
- break;
- }
-
- if ( gt[i].flags )
- len += sprintf( page + len,
- "Grant: ref (0x%x) flags (0x%hx) dom (0x%hx) frame
(0x%x)\n",
- i,
- gt[i].flags,
- gt[i].domid,
- gt[i].frame );
-
- *eof = 1;
- return len;
-}
-
-static int grant_write(struct file *file, const char __user *buffer,
- unsigned long count, void *data)
-{
- /* TODO: implement this */
- return -ENOSYS;
-}
-
-#endif /* CONFIG_PROC_FS */
-
-int gnttab_resume(void)
-{
- gnttab_setup_table_t setup;
- unsigned long frames[NR_GRANT_FRAMES];
- int i;
-
- setup.dom = DOMID_SELF;
- setup.nr_frames = NR_GRANT_FRAMES;
- setup.frame_list = frames;
-
- BUG_ON(HYPERVISOR_grant_table_op(GNTTABOP_setup_table, &setup, 1) != 0);
- BUG_ON(setup.status != 0);
-
- for ( i = 0; i < NR_GRANT_FRAMES; i++ )
- set_fixmap(FIX_GNTTAB_END - i, frames[i] << PAGE_SHIFT);
-
- return 0;
-}
-
-int gnttab_suspend(void)
-{
- int i;
-
- for ( i = 0; i < NR_GRANT_FRAMES; i++ )
- clear_fixmap(FIX_GNTTAB_END - i);
-
- return 0;
-}
-
-static int __init gnttab_init(void)
-{
- int i;
-
- BUG_ON(gnttab_resume());
-
- shared = (grant_entry_t *)fix_to_virt(FIX_GNTTAB_END);
-
- for ( i = 0; i < NR_GRANT_ENTRIES; i++ )
- gnttab_free_list[i] = i + 1;
-
-#ifdef CONFIG_PROC_FS
- /*
- * /proc/xen/grant : used by libxc to access grant tables
- */
- if ( (grant_pde = create_xen_proc_entry("grant", 0600)) == NULL )
- {
- WPRINTK("Unable to create grant xen proc entry\n");
- return -1;
- }
-
- grant_file_ops.read = grant_pde->proc_fops->read;
- grant_file_ops.write = grant_pde->proc_fops->write;
-
- grant_pde->proc_fops = &grant_file_ops;
-
- grant_pde->read_proc = &grant_read;
- grant_pde->write_proc = &grant_write;
-#endif
-
- printk("Grant table initialized\n");
- return 0;
-}
-
-__initcall(gnttab_init);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/kernel/reboot.c
--- a/linux-2.6.11-xen-sparse/arch/xen/kernel/reboot.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,269 +0,0 @@
-
-#define __KERNEL_SYSCALLS__
-static int errno;
-#include <linux/errno.h>
-#include <linux/version.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/unistd.h>
-#include <linux/module.h>
-#include <linux/reboot.h>
-#include <linux/sysrq.h>
-#include <asm/irq.h>
-#include <asm/mmu_context.h>
-#include <asm-xen/ctrl_if.h>
-#include <asm-xen/hypervisor.h>
-#include <asm-xen/xen-public/dom0_ops.h>
-#include <asm-xen/linux-public/suspend.h>
-#include <asm-xen/queues.h>
-
-void machine_restart(char * __unused)
-{
- /* We really want to get pending console data out before we die. */
- extern void xencons_force_flush(void);
- xencons_force_flush();
- HYPERVISOR_reboot();
-}
-
-void machine_halt(void)
-{
- machine_power_off();
-}
-
-void machine_power_off(void)
-{
- /* We really want to get pending console data out before we die. */
- extern void xencons_force_flush(void);
- xencons_force_flush();
- HYPERVISOR_shutdown();
-}
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-int reboot_thru_bios = 0; /* for dmi_scan.c */
-EXPORT_SYMBOL(machine_restart);
-EXPORT_SYMBOL(machine_halt);
-EXPORT_SYMBOL(machine_power_off);
-#endif
-
-
-/******************************************************************************
- * Stop/pickle callback handling.
- */
-
-/* Ignore multiple shutdown requests. */
-static int shutting_down = -1;
-
-static void __do_suspend(void)
-{
- int i, j;
- suspend_record_t *suspend_record;
-
- /* Hmmm... a cleaner interface to suspend/resume blkdevs would be nice. */
- /* XXX SMH: yes it would :-( */
-#ifdef CONFIG_XEN_BLKDEV_FRONTEND
- extern void blkdev_suspend(void);
- extern void blkdev_resume(void);
-#else
-#define blkdev_suspend() do{}while(0)
-#define blkdev_resume() do{}while(0)
-#endif
-
-#ifdef CONFIG_XEN_NETDEV_FRONTEND
- extern void netif_suspend(void);
- extern void netif_resume(void);
-#else
-#define netif_suspend() do{}while(0)
-#define netif_resume() do{}while(0)
-#endif
-
-#ifdef CONFIG_XEN_USB_FRONTEND
- extern void usbif_resume();
-#else
-#define usbif_resume() do{}while(0)
-#endif
-
-#ifdef CONFIG_XEN_BLKDEV_GRANT
- extern int gnttab_suspend(void);
- extern int gnttab_resume(void);
-#else
-#define gnttab_suspend() do{}while(0)
-#define gnttab_resume() do{}while(0)
-#endif
-
- extern void time_suspend(void);
- extern void time_resume(void);
- extern unsigned long max_pfn;
- extern unsigned int *pfn_to_mfn_frame_list;
-
- suspend_record = (suspend_record_t *)__get_free_page(GFP_KERNEL);
- if ( suspend_record == NULL )
- goto out;
-
- suspend_record->nr_pfns = max_pfn; /* final number of pfns */
-
- __cli();
-
-#ifdef __i386__
- mm_pin_all();
- kmem_cache_shrink(pgd_cache);
-#endif
-
- netif_suspend();
-
- blkdev_suspend();
-
- time_suspend();
-
- ctrl_if_suspend();
-
- irq_suspend();
-
- gnttab_suspend();
-
- HYPERVISOR_shared_info = (shared_info_t *)empty_zero_page;
- clear_fixmap(FIX_SHARED_INFO);
-
- memcpy(&suspend_record->resume_info, &xen_start_info,
- sizeof(xen_start_info));
-
- HYPERVISOR_suspend(virt_to_machine(suspend_record) >> PAGE_SHIFT);
-
- shutting_down = -1;
-
- memcpy(&xen_start_info, &suspend_record->resume_info,
- sizeof(xen_start_info));
-
- set_fixmap(FIX_SHARED_INFO, xen_start_info.shared_info);
-
- HYPERVISOR_shared_info = (shared_info_t *)fix_to_virt(FIX_SHARED_INFO);
-
- memset(empty_zero_page, 0, PAGE_SIZE);
-
- for ( i=0, j=0; i < max_pfn; i+=(PAGE_SIZE/sizeof(unsigned long)), j++ )
- {
- pfn_to_mfn_frame_list[j] =
- virt_to_machine(&phys_to_machine_mapping[i]) >> PAGE_SHIFT;
- }
- HYPERVISOR_shared_info->arch.pfn_to_mfn_frame_list =
- virt_to_machine(pfn_to_mfn_frame_list) >> PAGE_SHIFT;
-
- gnttab_resume();
-
- irq_resume();
-
- ctrl_if_resume();
-
- time_resume();
-
- blkdev_resume();
-
- netif_resume();
-
- usbif_resume();
-
- __sti();
-
- out:
- if ( suspend_record != NULL )
- free_page((unsigned long)suspend_record);
-}
-
-static int shutdown_process(void *__unused)
-{
- static char *envp[] = { "HOME=/", "TERM=linux",
- "PATH=/sbin:/usr/sbin:/bin:/usr/bin", NULL };
- static char *restart_argv[] = { "/sbin/shutdown", "-r", "now", NULL };
- static char *poweroff_argv[] = { "/sbin/halt", "-p", NULL };
-
- extern asmlinkage long sys_reboot(int magic1, int magic2,
- unsigned int cmd, void *arg);
-
- daemonize(
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
- "shutdown"
-#endif
- );
-
- switch ( shutting_down )
- {
- case CMSG_SHUTDOWN_POWEROFF:
- if ( execve("/sbin/halt", poweroff_argv, envp) < 0 )
- {
- sys_reboot(LINUX_REBOOT_MAGIC1,
- LINUX_REBOOT_MAGIC2,
- LINUX_REBOOT_CMD_POWER_OFF,
- NULL);
- }
- break;
-
- case CMSG_SHUTDOWN_REBOOT:
- if ( execve("/sbin/shutdown", restart_argv, envp) < 0 )
- {
- sys_reboot(LINUX_REBOOT_MAGIC1,
- LINUX_REBOOT_MAGIC2,
- LINUX_REBOOT_CMD_RESTART,
- NULL);
- }
- break;
- }
-
- shutting_down = -1; /* could try again */
-
- return 0;
-}
-
-static void __shutdown_handler(void *unused)
-{
- int err;
-
- if ( shutting_down != CMSG_SHUTDOWN_SUSPEND )
- {
- err = kernel_thread(shutdown_process, NULL, CLONE_FS | CLONE_FILES);
- if ( err < 0 )
- printk(KERN_ALERT "Error creating shutdown process!\n");
- }
- else
- {
- __do_suspend();
- }
-}
-
-static void shutdown_handler(ctrl_msg_t *msg, unsigned long id)
-{
- static DECLARE_WORK(shutdown_work, __shutdown_handler, NULL);
-
- if ( msg->subtype == CMSG_SHUTDOWN_SYSRQ )
- {
- int sysrq = ((shutdown_sysrq_t *)&msg->msg[0])->key;
-
-#ifdef CONFIG_MAGIC_SYSRQ
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
- handle_sysrq(sysrq, NULL, NULL);
-#else
- handle_sysrq(sysrq, NULL, NULL, NULL);
-#endif
-#endif
- }
- else if ( (shutting_down == -1) &&
- ((msg->subtype == CMSG_SHUTDOWN_POWEROFF) ||
- (msg->subtype == CMSG_SHUTDOWN_REBOOT) ||
- (msg->subtype == CMSG_SHUTDOWN_SUSPEND)) )
- {
- shutting_down = msg->subtype;
- schedule_work(&shutdown_work);
- }
- else
- {
- printk("Ignore spurious shutdown request\n");
- }
-
- ctrl_if_send_response(msg);
-}
-
-static int __init setup_shutdown_event(void)
-{
- ctrl_if_register_receiver(CMSG_SHUTDOWN, shutdown_handler, 0);
- return 0;
-}
-
-__initcall(setup_shutdown_event);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/kernel/skbuff.c
--- a/linux-2.6.11-xen-sparse/arch/xen/kernel/skbuff.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,47 +0,0 @@
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/version.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/netdevice.h>
-#include <linux/inetdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/init.h>
-#include <asm/io.h>
-#include <asm/page.h>
-
-EXPORT_SYMBOL(__dev_alloc_skb);
-
-/* Referenced in netback.c. */
-/*static*/ kmem_cache_t *skbuff_cachep;
-
-/* Size must be cacheline-aligned (alloc_skb uses SKB_DATA_ALIGN). */
-#define XEN_SKB_SIZE \
- ((PAGE_SIZE - sizeof(struct skb_shared_info)) & ~(SMP_CACHE_BYTES - 1))
-
-struct sk_buff *__dev_alloc_skb(unsigned int length, int gfp_mask)
-{
- struct sk_buff *skb;
- skb = alloc_skb_from_cache(skbuff_cachep, length + 16, gfp_mask);
- if ( likely(skb != NULL) )
- skb_reserve(skb, 16);
- return skb;
-}
-
-static void skbuff_ctor(void *buf, kmem_cache_t *cachep, unsigned long unused)
-{
- scrub_pages(buf, 1);
-}
-
-static int __init skbuff_init(void)
-{
- skbuff_cachep = kmem_cache_create(
- "xen-skb", PAGE_SIZE, PAGE_SIZE, 0, skbuff_ctor, NULL);
- return 0;
-}
-__initcall(skbuff_init);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/kernel/smp.c
--- a/linux-2.6.11-xen-sparse/arch/xen/kernel/smp.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,16 +0,0 @@
-/* Copyright (C) 2004, Christian Limpach */
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/threads.h>
-
-/*
- * the frequency of the profiling timer can be changed
- * by writing a multiplier value into /proc/profile.
- */
-int setup_profiling_timer(unsigned int multiplier)
-{
- printk("setup_profiling_timer\n");
-
- return 0;
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/kernel/xen_proc.c
--- a/linux-2.6.11-xen-sparse/arch/xen/kernel/xen_proc.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,18 +0,0 @@
-
-#include <linux/config.h>
-#include <linux/proc_fs.h>
-
-static struct proc_dir_entry *xen_base;
-
-struct proc_dir_entry *create_xen_proc_entry(const char *name, mode_t mode)
-{
- if ( xen_base == NULL )
- if ( (xen_base = proc_mkdir("xen", &proc_root)) == NULL )
- panic("Couldn't create /proc/xen");
- return create_proc_entry(name, mode, xen_base);
-}
-
-void remove_xen_proc_entry(const char *name)
-{
- remove_proc_entry(name, xen_base);
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/Kconfig
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/Kconfig Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,455 +0,0 @@
-#
-# For a description of the syntax of this configuration file,
-# see Documentation/kbuild/kconfig-language.txt.
-#
-# Note: ISA is disabled and will hopefully never be enabled.
-# If you managed to buy an ISA x86-64 box you'll have to fix all the
-# ISA drivers you need yourself.
-#
-
-menu "X86_64 processor configuration"
-
-config XENARCH
- string
- default x86_64
-
-config X86_64
- bool
- default y
- help
- Port to the x86-64 architecture. x86-64 is a 64-bit extension to the
- classical 32-bit x86 architecture. For details see
- <http://www.x86-64.org/>.
-
-config X86
- bool
- default y
-
-config 64BIT
- def_bool y
-
-config MMU
- bool
- default y
-
-config ISA
- bool
-
-config SBUS
- bool
-
-config RWSEM_GENERIC_SPINLOCK
- bool
- default y
-
-config RWSEM_XCHGADD_ALGORITHM
- bool
-
-config GENERIC_CALIBRATE_DELAY
- bool
- default y
-
-config X86_CMPXCHG
- bool
- default y
-
-config EARLY_PRINTK
- bool "Early Printk"
- default n
- help
- Write kernel log output directly into the VGA buffer or to a serial
- port.
-
- This is useful for kernel debugging when your machine crashes very
- early before the console code is initialized. For normal operation
- it is not recommended because it looks ugly and doesn't cooperate
- with klogd/syslogd or the X server. You should normally N here,
- unless you want to debug such a crash.
-
-config HPET_TIMER
- bool
- default n
- help
- Use the IA-PC HPET (High Precision Event Timer) to manage
- time in preference to the PIT and RTC, if a HPET is
- present. The HPET provides a stable time base on SMP
- systems, unlike the RTC, but it is more expensive to access,
- as it is off-chip. You can find the HPET spec at
- <http://www.intel.com/labs/platcomp/hpet/hpetspec.htm>.
-
- If unsure, say Y.
-
-config HPET_EMULATE_RTC
- bool "Provide RTC interrupt"
- depends on HPET_TIMER && RTC=y
-
-config GENERIC_ISA_DMA
- bool
- default y
-
-config GENERIC_IOMAP
- bool
- default y
-
-#source "init/Kconfig"
-
-
-menu "Processor type and features"
-
-choice
- prompt "Processor family"
- default MK8
-
-#config MK8
-# bool "AMD-Opteron/Athlon64"
-# help
-# Optimize for AMD Opteron/Athlon64/Hammer/K8 CPUs.
-
-config MPSC
- bool "Intel x86-64"
- help
- Optimize for Intel IA32 with 64bit extension CPUs
- (Prescott/Nocona/Potomac)
-
-config GENERIC_CPU
- bool "Generic-x86-64"
- help
- Generic x86-64 CPU.
-
-endchoice
-
-#
-# Define implied options from the CPU selection here
-#
-config X86_L1_CACHE_BYTES
- int
- default "128" if GENERIC_CPU || MPSC
- default "64" if MK8
-
-config X86_L1_CACHE_SHIFT
- int
- default "7" if GENERIC_CPU || MPSC
- default "6" if MK8
-
-config X86_TSC
- bool
- default n
-
-config X86_GOOD_APIC
- bool
- default y
-
-config X86_IO_APIC
- bool
- default XEN_PRIVILEGED_GUEST
-
-config X86_LOCAL_APIC
- bool
- default XEN_PRIVILEGED_GUEST
-
-config MICROCODE
- tristate "/dev/cpu/microcode - Intel CPU microcode support"
- ---help---
- If you say Y here the 'File systems' section, you will be
- able to update the microcode on Intel processors. You will
- obviously need the actual microcode binary data itself which is
- not shipped with the Linux kernel.
-
- For latest news and information on obtaining all the required
- ingredients for this driver, check:
- <http://www.urbanmyth.org/microcode/>.
-
- To compile this driver as a module, choose M here: the
- module will be called microcode.
- If you use modprobe or kmod you may also want to add the line
- 'alias char-major-10-184 microcode' to your /etc/modules.conf file.
-
-config X86_MSR
- tristate "/dev/cpu/*/msr - Model-specific register support"
- help
- This device gives privileged processes access to the x86
- Model-Specific Registers (MSRs). It is a character device with
- major 202 and minors 0 to 31 for /dev/cpu/0/msr to /dev/cpu/31/msr.
- MSR accesses are directed to a specific CPU on multi-processor
- systems.
-
-config X86_CPUID
- tristate "/dev/cpu/*/cpuid - CPU information support"
- help
- This device gives processes access to the x86 CPUID instruction to
- be executed on a specific processor. It is a character device
- with major 203 and minors 0 to 31 for /dev/cpu/0/cpuid to
- /dev/cpu/31/cpuid.
-
-# disable it for opteron optimized builds because it pulls in ACPI_BOOT
-config X86_HT
- bool
- depends on SMP && !MK8
- default y
-
-config MATH_EMULATION
- bool
-
-config MCA
- bool
-
-config EISA
- bool
-
-config MTRR
- bool "MTRR (Memory Type Range Register) support"
- ---help---
- On Intel P6 family processors (Pentium Pro, Pentium II and later)
- the Memory Type Range Registers (MTRRs) may be used to control
- processor access to memory ranges. This is most useful if you have
- a video (VGA) card on a PCI or AGP bus. Enabling write-combining
- allows bus write transfers to be combined into a larger transfer
- before bursting over the PCI/AGP bus. This can increase performance
- of image write operations 2.5 times or more. Saying Y here creates a
- /proc/mtrr file which may be used to manipulate your processor's
- MTRRs. Typically the X server should use this.
-
- This code has a reasonably generic interface so that similar
- control registers on other processors can be easily supported
- as well.
-
- Saying Y here also fixes a problem with buggy SMP BIOSes which only
- set the MTRRs for the boot CPU and not for the secondary CPUs. This
- can lead to all sorts of problems, so it's good to say Y here.
-
- Just say Y here, all x86-64 machines support MTRRs.
-
- See <file:Documentation/mtrr.txt> for more information.
-
-config SMP
- bool "Symmetric multi-processing support"
- ---help---
- This enables support for systems with more than one CPU. If you have
- a system with only one CPU, like most personal computers, say N. If
- you have a system with more than one CPU, say Y.
-
- If you say N here, the kernel will run on single and multiprocessor
- machines, but will use only one CPU of a multiprocessor machine. If
- you say Y here, the kernel will run on many, but not all,
- singleprocessor machines. On a singleprocessor machine, the kernel
- will run faster if you say N here.
-
- If you don't know what to do here, say N.
-
-config PREEMPT
- bool "Preemptible Kernel"
- ---help---
- This option reduces the latency of the kernel when reacting to
- real-time or interactive events by allowing a low priority process to
- be preempted even if it is in kernel mode executing a system call.
- This allows applications to run more reliably even when the system is
- under load. On contrary it may also break your drivers and add
- priority inheritance problems to your system. Don't select it if
- you rely on a stable system or have slightly obscure hardware.
- It's also not very well tested on x86-64 currently.
- You have been warned.
-
- Say Y here if you are feeling brave and building a kernel for a
- desktop, embedded or real-time system. Say N if you are unsure.
-
-config SCHED_SMT
- bool "SMT (Hyperthreading) scheduler support"
- depends on SMP
- default off
- help
- SMT scheduler support improves the CPU scheduler's decision making
- when dealing with Intel Pentium 4 chips with HyperThreading at a
- cost of slightly increased overhead in some places. If unsure say
- N here.
-
-config K8_NUMA
- bool "K8 NUMA support"
- select NUMA
- depends on SMP
- help
- Enable NUMA (Non Unified Memory Architecture) support for
- AMD Opteron Multiprocessor systems. The kernel will try to allocate
- memory used by a CPU on the local memory controller of the CPU
- and add some more NUMA awareness to the kernel.
- This code is recommended on all multiprocessor Opteron systems
- and normally doesn't hurt on others.
-
-config NUMA_EMU
- bool "NUMA emulation support"
- select NUMA
- depends on SMP
- help
- Enable NUMA emulation. A flat machine will be split
- into virtual nodes when booted with "numa=fake=N", where N is the
- number of nodes. This is only useful for debugging.
-
-config DISCONTIGMEM
- bool
- depends on NUMA
- default y
-
-config NUMA
- bool
- default n
-
-config HAVE_DEC_LOCK
- bool
- depends on SMP
- default y
-
-# actually 64 maximum, but you need to fix the APIC code first
-# to use clustered mode or whatever your big iron needs
-config NR_CPUS
- int "Maximum number of CPUs (2-8)"
- range 2 8
- depends on SMP
- default "8"
- help
- This allows you to specify the maximum number of CPUs which this
- kernel will support. The maximum supported value is 32 and the
- minimum value which makes sense is 2.
-
- This is purely to save memory - each supported CPU requires
- memory in the static kernel configuration.
-
-config GART_IOMMU
- bool "IOMMU support"
- depends on PCI
- help
- Support the K8 IOMMU. Needed to run systems with more than 4GB of
memory
- properly with 32-bit PCI devices that do not support DAC (Double
Address
- Cycle). The IOMMU can be turned off at runtime with the iommu=off
parameter.
- Normally the kernel will take the right choice by itself.
- If unsure, say Y.
-
-# need this always enabled with GART_IOMMU for the VIA workaround
-config SWIOTLB
- bool
- depends on GART_IOMMU
- default y
-
-config DUMMY_IOMMU
- bool
- depends on !GART_IOMMU && !SWIOTLB
- default y
- help
- Don't use IOMMU code. This will cause problems when you have more
than 4GB
- of memory and any 32-bit devices. Don't turn on unless you know what
you
- are doing.
-
-config X86_MCE
- bool "Machine check support" if EMBEDDED
- default n
- help
- Include a machine check error handler to report hardware errors.
- This version will require the mcelog utility to decode some
- machine check error logs. See
- ftp://ftp.x86-64.org/pub/linux/tools/mcelog
-
-endmenu
-
-#
-# Use the generic interrupt handling code in kernel/irq/:
-#
-config GENERIC_HARDIRQS
- bool
- default y
-
-config GENERIC_IRQ_PROBE
- bool
- default y
-
-menu "Power management options"
-
-source kernel/power/Kconfig
-
-source "arch/x86_64/kernel/cpufreq/Kconfig"
-
-endmenu
-
-menu "Bus options (PCI etc.)"
-
-config PCI
- bool "PCI support"
-
-# x86-64 doesn't support PCI BIOS access from long mode so always go direct.
-config PCI_DIRECT
- bool
- depends on PCI
- default y
-
-config PCI_MMCONFIG
- bool "Support mmconfig PCI config space access"
- depends on PCI
- select ACPI_BOOT
-
-config UNORDERED_IO
- bool "Unordered IO mapping access"
- depends on EXPERIMENTAL
- help
- Use unordered stores to access IO memory mappings in device drivers.
- Still very experimental. When a driver works on IA64/ppc64/pa-risc it
should
- work with this option, but it makes the drivers behave differently
- from i386. Requires that the driver writer used memory barriers
- properly.
-
-#source "drivers/pci/Kconfig"
-
-#source "drivers/pcmcia/Kconfig"
-
-#source "drivers/pci/hotplug/Kconfig"
-
-endmenu
-
-
-menu "Executable file formats / Emulations"
-
-# source "fs/Kconfig.binfmt"
-
-config IA32_EMULATION
- bool "IA32 Emulation"
- help
- Include code to run 32-bit programs under a 64-bit kernel. You should
likely
- turn this on, unless you're 100% sure that you don't have any 32-bit
programs
- left.
-
-config IA32_AOUT
- bool "IA32 a.out support"
- depends on IA32_EMULATION
- help
- Support old a.out binaries in the 32bit emulation.
-
-config COMPAT
- bool
- depends on IA32_EMULATION
- default y
-
-config SYSVIPC_COMPAT
- bool
- depends on COMPAT && SYSVIPC
- default y
-
-config UID16
- bool
- depends on IA32_EMULATION
- default y
-
-endmenu
-
-# source drivers/Kconfig
-
-# source "drivers/firmware/Kconfig"
-
-# source fs/Kconfig
-
-#source "arch/x86_64/oprofile/Kconfig"
-
-#source "arch/x86_64/Kconfig.debug"
-
-# source "security/Kconfig"
-
-# source "crypto/Kconfig"
-
-# source "lib/Kconfig"
-
-endmenu
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/Makefile
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/Makefile Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,92 +0,0 @@
-#
-# x86_64/Makefile
-#
-# This file is included by the global makefile so that you can add your own
-# architecture-specific flags and dependencies. Remember to do have actions
-# for "archclean" and "archdep" for cleaning up and making dependencies for
-# this architecture
-#
-# This file is subject to the terms and conditions of the GNU General Public
-# License. See the file "COPYING" in the main directory of this archive
-# for more details.
-#
-# Copyright (C) 1994 by Linus Torvalds
-#
-# 19990713 Artur Skawina <skawina@xxxxxxxxxxxxx>
-# Added '-march' and '-mpreferred-stack-boundary' support
-# 20000913 Pavel Machek <pavel@xxxxxxx>
-# Converted for x86_64 architecture
-# 20010105 Andi Kleen, add IA32 compiler.
-# ....and later removed it again....
-# 20050205 Jun Nakajima <jun.nakajima@xxxxxxxxx>
-# Modified for Xen
-#
-# $Id: Makefile,v 1.31 2002/03/22 15:56:07 ak Exp $
-
-#
-# early bootup linking needs 32bit. You can either use real 32bit tools
-# here or 64bit tools in 32bit mode.
-#
-XENARCH := $(subst ",,$(CONFIG_XENARCH))
-
-IA32_CC := $(CC) $(CPPFLAGS) -m32 -O2 -fomit-frame-pointer
-IA32_LD := $(LD) -m elf_i386
-IA32_AS := $(CC) $(AFLAGS) -m32 -Wa,--32 -traditional -c
-IA32_OBJCOPY := $(CROSS_COMPILE)objcopy
-IA32_CPP := $(CROSS_COMPILE)gcc -m32 -E
-export IA32_CC IA32_LD IA32_AS IA32_OBJCOPY IA32_CPP
-
-
-LDFLAGS := -m elf_x86_64
-#LDFLAGS_vmlinux := -e stext
-
-CHECKFLAGS += -D__x86_64__ -m64
-
-cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
-cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
-CFLAGS += $(cflags-y)
-
-CFLAGS += -mno-red-zone
-CFLAGS += -mcmodel=kernel
-CFLAGS += -pipe
-# this makes reading assembly source easier, but produces worse code
-# actually it makes the kernel smaller too.
-CFLAGS += -fno-reorder-blocks
-CFLAGS += -Wno-sign-compare
-ifneq ($(CONFIG_DEBUG_INFO),y)
-CFLAGS += -fno-asynchronous-unwind-tables
-# -fweb shrinks the kernel a bit, but the difference is very small
-# it also messes up debugging, so don't use it for now.
-#CFLAGS += $(call cc-option,-fweb)
-endif
-# -funit-at-a-time shrinks the kernel .text considerably
-# unfortunately it makes reading oopses harder.
-CFLAGS += $(call cc-option,-funit-at-a-time,)
-
-head-y := arch/xen/x86_64/kernel/head.o arch/xen/x86_64/kernel/head64.o
arch/xen/x86_64/kernel/init_task.o
-
-libs-y += arch/x86_64/lib/
-core-y += arch/xen/x86_64/kernel/
arch/xen/x86_64/mm/
-core-$(CONFIG_IA32_EMULATION) += arch/xen/x86_64/ia32/
-drivers-$(CONFIG_PCI) += arch/xen/x86_64/pci/
-drivers-$(CONFIG_OPROFILE) += arch/x86_64/oprofile/
-
-# for clean
-obj- += kernel/ mm/ pci/
-
-xenflags-y += -Iinclude/asm-xen/asm-x86_64/mach-xen
-
-CFLAGS += $(xenflags-y)
-AFLAGS += $(xenflags-y)
-
-prepare: include/asm-$(XENARCH)/asm_offset.h
-CLEAN_FILES += include/asm-$(XENARCH)/asm_offset.h
-
-arch/$(XENARCH)/kernel/asm-offsets.s: include/asm include/.asm-ignore \
- include/linux/version.h include/config/MARKER
-
-
-include/asm-$(XENARCH)/asm_offset.h: arch/xen/x86_64/kernel/asm-offsets.s
- $(call filechk,gen-asm-offsets)
- ln -fsn asm_offset.h include/asm-$(XENARCH)/offset.h
-
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/ia32/Makefile
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/ia32/Makefile Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,58 +0,0 @@
-#
-# Makefile for the ia32 kernel emulation subsystem.
-#
-XENARCH := $(subst ",,$(CONFIG_XENARCH))
-
-CFLAGS += -Iarch/$(XENARCH)/kernel
-
-obj-$(CONFIG_IA32_EMULATION) := ia32entry.o syscall32.o
-
-c-obj-$(CONFIG_IA32_EMULATION) := sys_ia32.o ia32_ioctl.o \
- ia32_signal.o tls32.o \
- ia32_binfmt.o fpu32.o ptrace32.o
-
-s-obj-y :=
-
-sysv-$(CONFIG_SYSVIPC) := ipc32.o
-c-obj-$(CONFIG_IA32_EMULATION) += $(sysv-y)
-
-c-obj-$(CONFIG_IA32_AOUT) += ia32_aout.o
-
-$(obj)/syscall32.o: $(src)/syscall32.c \
- $(foreach F,int80 sysenter syscall,$(obj)/vsyscall-$F.so)
-
-# Teach kbuild about targets
-targets := $(foreach F,int80 sysenter syscall,vsyscall-$F.o vsyscall-$F.so)
-
-# The DSO images are built using a special linker script
-quiet_cmd_syscall = SYSCALL $@
- cmd_syscall = $(CC) -m32 -nostdlib -shared -s \
- -Wl,-soname=linux-gate.so.1 -o $@ \
- -Wl,-T,$(filter-out FORCE,$^)
-
-
-$(obj)/vsyscall-int80.so $(obj)/vsyscall-sysenter.so
$(obj)/vsyscall-syscall.so: \
-$(obj)/vsyscall-%.so: $(obj)/vsyscall.lds $(obj)/vsyscall-%.o FORCE
- $(call if_changed,syscall)
-
-AFLAGS_vsyscall-int80.o = -m32 -I$(obj)
-AFLAGS_vsyscall-sysenter.o = -m32
-AFLAGS_vsyscall-syscall.o = -m32
-CFLAGS_ia32_ioctl.o += -Ifs/
-
-s-link := vsyscall-syscall.o vsyscall-sysenter.o vsyscall-sigreturn.o
-
-$(obj)/vsyscall.lds:
- @ln -fsn $(srctree)/arch/x86_64/ia32/$(notdir $@) $@
-
-$(patsubst %.o,$(obj)/%.c,$(c-obj-y) $(c-link)) $(patsubst
%.o,$(obj)/%.S,$(s-obj-y) $(s-link)):
- @ln -fsn $(srctree)/arch/x86_64/ia32/$(notdir $@) $@
-
-$(obj)/vsyscall-int80.S: $(obj)/vsyscall-sigreturn.S
-$(obj)/vsyscall-sysenter.S: $(obj)/vsyscall-sigreturn.S
-$(obj)/vsyscall-syscall.S: $(obj)/vsyscall-sigreturn.S
-
-obj-y += $(c-obj-y) $(s-obj-y)
-
-clean-files += $(patsubst %.o,%.c,$(c-obj-y) $(c-obj-) $(c-link))
-clean-files += $(patsubst %.o,%.S,$(s-obj-y) $(s-obj-) $(s-link))
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/ia32/ia32entry.S
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/ia32/ia32entry.S Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,629 +0,0 @@
-/*
- * Compatibility mode system call entry point for x86-64.
- *
- * Copyright 2000-2002 Andi Kleen, SuSE Labs.
- */
-
-#include <asm/dwarf2.h>
-#include <asm/calling.h>
-#include <asm/offset.h>
-#include <asm/current.h>
-#include <asm/errno.h>
-#include <asm/ia32_unistd.h>
-#include <asm/thread_info.h>
-#include <asm/segment.h>
-#include <asm/vsyscall32.h>
-#include <linux/linkage.h>
-
-#define __XEN_X86_64 1
-
- .macro IA32_ARG_FIXUP noebp=0
- movl %edi,%r8d
- .if \noebp
- .else
- movl %ebp,%r9d
- .endif
- xchg %ecx,%esi
- movl %ebx,%edi
- movl %edx,%edx /* zero extension */
- .endm
-
- /* clobbers %eax */
- .macro CLEAR_RREGS
- xorl %eax,%eax
- movq %rax,R11(%rsp)
- movq %rax,R10(%rsp)
- movq %rax,R9(%rsp)
- movq %rax,R8(%rsp)
- .endm
-
-#if defined (__XEN_X86_64)
-#include "../kernel/xen_entry.S"
-
-#define __swapgs
-#define __cli
-#define __sti
-#else
-/*
- * Use the native instructions
- */
-#define __swapgs swapgs
-#define __cli cli
-#define __sti sti
-#endif
-
-/*
- * 32bit SYSENTER instruction entry.
- *
- * Arguments:
- * %eax System call number.
- * %ebx Arg1
- * %ecx Arg2
- * %edx Arg3
- * %esi Arg4
- * %edi Arg5
- * %ebp user stack
- * 0(%ebp) Arg6
- *
- * Interrupts off.
- *
- * This is purely a fast path. For anything complicated we use the int 0x80
- * path below. Set up a complete hardware stack frame to share code
- * with the int 0x80 path.
- */
-ENTRY(ia32_sysenter_target)
- CFI_STARTPROC
- __swapgs
- movq %gs:pda_kernelstack, %rsp
- addq $(PDA_STACKOFFSET),%rsp
- XEN_UNBLOCK_EVENTS(%r11)
- __sti
- movl %ebp,%ebp /* zero extension */
- pushq $__USER32_DS
- pushq %rbp
- pushfq
- movl $VSYSCALL32_SYSEXIT, %r10d
- pushq $__USER32_CS
- movl %eax, %eax
- pushq %r10
- pushq %rax
- cld
- SAVE_ARGS 0,0,1
- /* no need to do an access_ok check here because rbp has been
- 32bit zero extended */
-1: movl (%rbp),%r9d
- .section __ex_table,"a"
- .quad 1b,ia32_badarg
- .previous
- GET_THREAD_INFO(%r10)
- testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT),threadinfo_flags(%r10)
- jnz sysenter_tracesys
-sysenter_do_call:
- cmpl $(IA32_NR_syscalls),%eax
- jae ia32_badsys
- IA32_ARG_FIXUP 1
- call *ia32_sys_call_table(,%rax,8)
- movq %rax,RAX-ARGOFFSET(%rsp)
- GET_THREAD_INFO(%r10)
- XEN_BLOCK_EVENTS(%r11)
- __cli
- testl $_TIF_ALLWORK_MASK,threadinfo_flags(%r10)
- jnz int_ret_from_sys_call
- /* clear IF, that popfq doesn't enable interrupts early */
- andl $~0x200,EFLAGS-R11(%rsp)
- RESTORE_ARGS 1,24,1,1,1,1
- popfq
- popq %rcx /* User %esp */
- movl $VSYSCALL32_SYSEXIT,%edx /* User %eip */
- __swapgs
- XEN_UNBLOCK_EVENTS(%r11)
- __sti /* sti only takes effect after the next instruction */
- /* sysexit */
- .byte 0xf, 0x35 /* TBD */
-
-sysenter_tracesys:
- SAVE_REST
- CLEAR_RREGS
- movq $-ENOSYS,RAX(%rsp) /* really needed? */
- movq %rsp,%rdi /* &pt_regs -> arg1 */
- call syscall_trace_enter
- LOAD_ARGS ARGOFFSET /* reload args from stack in case ptrace changed
it */
- RESTORE_REST
- movl %ebp, %ebp
- /* no need to do an access_ok check here because rbp has been
- 32bit zero extended */
-1: movl (%rbp),%r9d
- .section __ex_table,"a"
- .quad 1b,ia32_badarg
- .previous
- jmp sysenter_do_call
- CFI_ENDPROC
-
-/*
- * 32bit SYSCALL instruction entry.
- *
- * Arguments:
- * %eax System call number.
- * %ebx Arg1
- * %ecx return EIP
- * %edx Arg3
- * %esi Arg4
- * %edi Arg5
- * %ebp Arg2 [note: not saved in the stack frame, should not be touched]
- * %esp user stack
- * 0(%esp) Arg6
- *
- * Interrupts off.
- *
- * This is purely a fast path. For anything complicated we use the int 0x80
- * path below. Set up a complete hardware stack frame to share code
- * with the int 0x80 path.
- */
-ENTRY(ia32_cstar_target)
- CFI_STARTPROC
- __swapgs
- movl %esp,%r8d
- movq %gs:pda_kernelstack,%rsp
- XEN_UNBLOCK_EVENTS(%r11)
- __sti
- SAVE_ARGS 8,1,1
- movl %eax,%eax /* zero extension */
- movq %rax,ORIG_RAX-ARGOFFSET(%rsp)
- movq %rcx,RIP-ARGOFFSET(%rsp)
- movq %rbp,RCX-ARGOFFSET(%rsp) /* this lies slightly to ptrace */
- movl %ebp,%ecx
- movq $__USER32_CS,CS-ARGOFFSET(%rsp)
- movq $__USER32_DS,SS-ARGOFFSET(%rsp)
- movq %r11,EFLAGS-ARGOFFSET(%rsp)
- movq %r8,RSP-ARGOFFSET(%rsp)
- /* no need to do an access_ok check here because r8 has been
- 32bit zero extended */
- /* hardware stack frame is complete now */
-1: movl (%r8),%r9d
- .section __ex_table,"a"
- .quad 1b,ia32_badarg
- .previous
- GET_THREAD_INFO(%r10)
- testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT),threadinfo_flags(%r10)
- jnz cstar_tracesys
-cstar_do_call:
- cmpl $IA32_NR_syscalls,%eax
- jae ia32_badsys
- IA32_ARG_FIXUP 1
- call *ia32_sys_call_table(,%rax,8)
- movq %rax,RAX-ARGOFFSET(%rsp)
- GET_THREAD_INFO(%r10)
- XEN_BLOCK_EVENTS(%r11)
- __cli
- testl $_TIF_ALLWORK_MASK,threadinfo_flags(%r10)
- jnz int_ret_from_sys_call
- RESTORE_ARGS 1,-ARG_SKIP,1,1,1
- movl RIP-ARGOFFSET(%rsp),%ecx
- movl EFLAGS-ARGOFFSET(%rsp),%r11d
- movl RSP-ARGOFFSET(%rsp),%esp
- __swapgs
- sysretl /* TBD */
-
-cstar_tracesys:
- SAVE_REST
- CLEAR_RREGS
- movq $-ENOSYS,RAX(%rsp) /* really needed? */
- movq %rsp,%rdi /* &pt_regs -> arg1 */
- call syscall_trace_enter
- LOAD_ARGS ARGOFFSET /* reload args from stack in case ptrace changed
it */
- RESTORE_REST
- movl RSP-ARGOFFSET(%rsp), %r8d
- /* no need to do an access_ok check here because r8 has been
- 32bit zero extended */
-1: movl (%r8),%r9d
- .section __ex_table,"a"
- .quad 1b,ia32_badarg
- .previous
- jmp cstar_do_call
-
-ia32_badarg:
- movq $-EFAULT,%rax
- jmp ia32_sysret
- CFI_ENDPROC
-
-/*
- * Emulated IA32 system calls via int 0x80.
- *
- * Arguments:
- * %eax System call number.
- * %ebx Arg1
- * %ecx Arg2
- * %edx Arg3
- * %esi Arg4
- * %edi Arg5
- * %ebp Arg6 [note: not saved in the stack frame, should not be touched]
- *
- * Notes:
- * Uses the same stack frame as the x86-64 version.
- * All registers except %eax must be saved (but ptrace may violate that)
- * Arguments are zero extended. For system calls that want sign extension and
- * take long arguments a wrapper is needed. Most calls can just be called
- * directly.
- * Assumes it is only called from user space and entered with interrupts off.
- */
-
-ENTRY(ia32_syscall)
- CFI_STARTPROC
- __swapgs
- XEN_UNBLOCK_EVENTS(%r11)
- __sti
- movq (%rsp),%rcx
- movq 8(%rsp),%r11
- addq $0x10,%rsp /* skip rcx and r11 */
- movl %eax,%eax
- pushq %rax
- cld
-/* 1: jmp 1b */
- /* note the registers are not zero extended to the sf.
- this could be a problem. */
- SAVE_ARGS 0,0,1
- GET_THREAD_INFO(%r10)
- testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT),threadinfo_flags(%r10)
- jnz ia32_tracesys
-ia32_do_syscall:
- cmpl $(IA32_NR_syscalls),%eax
- jae ia32_badsys
- IA32_ARG_FIXUP
- call *ia32_sys_call_table(,%rax,8) # xxx: rip relative
-ia32_sysret:
- movq %rax,RAX-ARGOFFSET(%rsp)
- jmp int_ret_from_sys_call
-
-ia32_tracesys:
- SAVE_REST
- movq $-ENOSYS,RAX(%rsp) /* really needed? */
- movq %rsp,%rdi /* &pt_regs -> arg1 */
- call syscall_trace_enter
- LOAD_ARGS ARGOFFSET /* reload args from stack in case ptrace changed
it */
- RESTORE_REST
- jmp ia32_do_syscall
-
-ia32_badsys:
- movq $0,ORIG_RAX-ARGOFFSET(%rsp)
- movq $-ENOSYS,RAX-ARGOFFSET(%rsp)
- jmp int_ret_from_sys_call
-
-ni_syscall:
- movq %rax,%rdi
- jmp sys32_ni_syscall
-
-quiet_ni_syscall:
- movq $-ENOSYS,%rax
- ret
- CFI_ENDPROC
-
- .macro PTREGSCALL label, func, arg
- .globl \label
-\label:
- leaq \func(%rip),%rax
- leaq -ARGOFFSET+8(%rsp),\arg /* 8 for return address */
- jmp ia32_ptregs_common
- .endm
-
- PTREGSCALL stub32_rt_sigreturn, sys32_rt_sigreturn, %rdi
- PTREGSCALL stub32_sigreturn, sys32_sigreturn, %rdi
- PTREGSCALL stub32_sigaltstack, sys32_sigaltstack, %rdx
- PTREGSCALL stub32_sigsuspend, sys32_sigsuspend, %rcx
- PTREGSCALL stub32_execve, sys32_execve, %rcx
- PTREGSCALL stub32_fork, sys_fork, %rdi
- PTREGSCALL stub32_clone, sys32_clone, %rdx
- PTREGSCALL stub32_vfork, sys_vfork, %rdi
- PTREGSCALL stub32_iopl, sys_iopl, %rsi
- PTREGSCALL stub32_rt_sigsuspend, sys_rt_sigsuspend, %rdx
-
-ENTRY(ia32_ptregs_common)
- CFI_STARTPROC
- popq %r11
- SAVE_REST
- call *%rax
- RESTORE_REST
- jmp ia32_sysret /* misbalances the return cache */
- CFI_ENDPROC
-
- .data
- .align 8
- .globl ia32_sys_call_table
-ia32_sys_call_table:
- .quad sys_restart_syscall
- .quad sys_exit
- .quad stub32_fork
- .quad sys_read
- .quad sys_write
- .quad sys32_open /* 5 */
- .quad sys_close
- .quad sys32_waitpid
- .quad sys_creat
- .quad sys_link
- .quad sys_unlink /* 10 */
- .quad stub32_execve
- .quad sys_chdir
- .quad compat_sys_time
- .quad sys_mknod
- .quad sys_chmod /* 15 */
- .quad sys_lchown16
- .quad quiet_ni_syscall /* old break syscall holder */
- .quad sys_stat
- .quad sys32_lseek
- .quad sys_getpid /* 20 */
- .quad compat_sys_mount /* mount */
- .quad sys_oldumount /* old_umount */
- .quad sys_setuid16
- .quad sys_getuid16
- .quad compat_sys_stime /* stime */ /* 25 */
- .quad sys32_ptrace /* ptrace */
- .quad sys_alarm
- .quad sys_fstat /* (old)fstat */
- .quad sys_pause
- .quad compat_sys_utime /* 30 */
- .quad quiet_ni_syscall /* old stty syscall holder */
- .quad quiet_ni_syscall /* old gtty syscall holder */
- .quad sys_access
- .quad sys_nice
- .quad quiet_ni_syscall /* 35 */ /* old ftime syscall holder */
- .quad sys_sync
- .quad sys32_kill
- .quad sys_rename
- .quad sys_mkdir
- .quad sys_rmdir /* 40 */
- .quad sys_dup
- .quad sys32_pipe
- .quad compat_sys_times
- .quad quiet_ni_syscall /* old prof syscall holder */
- .quad sys_brk /* 45 */
- .quad sys_setgid16
- .quad sys_getgid16
- .quad sys_signal
- .quad sys_geteuid16
- .quad sys_getegid16 /* 50 */
- .quad sys_acct
- .quad sys_umount /* new_umount */
- .quad quiet_ni_syscall /* old lock syscall holder */
- .quad compat_sys_ioctl
- .quad compat_sys_fcntl64 /* 55 */
- .quad quiet_ni_syscall /* old mpx syscall holder */
- .quad sys_setpgid
- .quad quiet_ni_syscall /* old ulimit syscall holder */
- .quad sys32_olduname
- .quad sys_umask /* 60 */
- .quad sys_chroot
- .quad sys32_ustat
- .quad sys_dup2
- .quad sys_getppid
- .quad sys_getpgrp /* 65 */
- .quad sys_setsid
- .quad sys32_sigaction
- .quad sys_sgetmask
- .quad sys_ssetmask
- .quad sys_setreuid16 /* 70 */
- .quad sys_setregid16
- .quad stub32_sigsuspend
- .quad compat_sys_sigpending
- .quad sys_sethostname
- .quad compat_sys_setrlimit /* 75 */
- .quad compat_sys_old_getrlimit /* old_getrlimit */
- .quad compat_sys_getrusage
- .quad sys32_gettimeofday
- .quad sys32_settimeofday
- .quad sys_getgroups16 /* 80 */
- .quad sys_setgroups16
- .quad sys32_old_select
- .quad sys_symlink
- .quad sys_lstat
- .quad sys_readlink /* 85 */
-#ifdef CONFIG_IA32_AOUT
- .quad sys_uselib
-#else
- .quad quiet_ni_syscall
-#endif
- .quad sys_swapon
- .quad sys_reboot
- .quad compat_sys_old_readdir
- .quad sys32_mmap /* 90 */
- .quad sys_munmap
- .quad sys_truncate
- .quad sys_ftruncate
- .quad sys_fchmod
- .quad sys_fchown16 /* 95 */
- .quad sys_getpriority
- .quad sys_setpriority
- .quad quiet_ni_syscall /* old profil syscall holder */
- .quad compat_sys_statfs
- .quad compat_sys_fstatfs /* 100 */
- .quad sys_ioperm
- .quad compat_sys_socketcall
- .quad sys_syslog
- .quad compat_sys_setitimer
- .quad compat_sys_getitimer /* 105 */
- .quad compat_sys_newstat
- .quad compat_sys_newlstat
- .quad compat_sys_newfstat
- .quad sys32_uname
- .quad stub32_iopl /* 110 */
- .quad sys_vhangup
- .quad quiet_ni_syscall /* old "idle" system call */
- .quad sys32_vm86_warning /* vm86old */
- .quad compat_sys_wait4
- .quad sys_swapoff /* 115 */
- .quad sys32_sysinfo
- .quad sys32_ipc
- .quad sys_fsync
- .quad stub32_sigreturn
- .quad stub32_clone /* 120 */
- .quad sys_setdomainname
- .quad sys_uname
- .quad sys_modify_ldt
- .quad sys32_adjtimex
- .quad sys32_mprotect /* 125 */
- .quad compat_sys_sigprocmask
- .quad quiet_ni_syscall /* create_module */
- .quad sys_init_module
- .quad sys_delete_module
- .quad quiet_ni_syscall /* 130 get_kernel_syms */
- .quad sys_quotactl
- .quad sys_getpgid
- .quad sys_fchdir
- .quad quiet_ni_syscall /* bdflush */
- .quad sys_sysfs /* 135 */
- .quad sys_personality
- .quad quiet_ni_syscall /* for afs_syscall */
- .quad sys_setfsuid16
- .quad sys_setfsgid16
- .quad sys_llseek /* 140 */
- .quad compat_sys_getdents
- .quad compat_sys_select
- .quad sys_flock
- .quad sys_msync
- .quad compat_sys_readv /* 145 */
- .quad compat_sys_writev
- .quad sys_getsid
- .quad sys_fdatasync
- .quad sys32_sysctl /* sysctl */
- .quad sys_mlock /* 150 */
- .quad sys_munlock
- .quad sys_mlockall
- .quad sys_munlockall
- .quad sys_sched_setparam
- .quad sys_sched_getparam /* 155 */
- .quad sys_sched_setscheduler
- .quad sys_sched_getscheduler
- .quad sys_sched_yield
- .quad sys_sched_get_priority_max
- .quad sys_sched_get_priority_min /* 160 */
- .quad sys_sched_rr_get_interval
- .quad compat_sys_nanosleep
- .quad sys_mremap
- .quad sys_setresuid16
- .quad sys_getresuid16 /* 165 */
- .quad sys32_vm86_warning /* vm86 */
- .quad quiet_ni_syscall /* query_module */
- .quad sys_poll
- .quad compat_sys_nfsservctl
- .quad sys_setresgid16 /* 170 */
- .quad sys_getresgid16
- .quad sys_prctl
- .quad stub32_rt_sigreturn
- .quad sys32_rt_sigaction
- .quad sys32_rt_sigprocmask /* 175 */
- .quad sys32_rt_sigpending
- .quad compat_sys_rt_sigtimedwait
- .quad sys32_rt_sigqueueinfo
- .quad stub32_rt_sigsuspend
- .quad sys32_pread /* 180 */
- .quad sys32_pwrite
- .quad sys_chown16
- .quad sys_getcwd
- .quad sys_capget
- .quad sys_capset
- .quad stub32_sigaltstack
- .quad sys32_sendfile
- .quad quiet_ni_syscall /* streams1 */
- .quad quiet_ni_syscall /* streams2 */
- .quad stub32_vfork /* 190 */
- .quad compat_sys_getrlimit
- .quad sys32_mmap2
- .quad sys32_truncate64
- .quad sys32_ftruncate64
- .quad sys32_stat64 /* 195 */
- .quad sys32_lstat64
- .quad sys32_fstat64
- .quad sys_lchown
- .quad sys_getuid
- .quad sys_getgid /* 200 */
- .quad sys_geteuid
- .quad sys_getegid
- .quad sys_setreuid
- .quad sys_setregid
- .quad sys_getgroups /* 205 */
- .quad sys_setgroups
- .quad sys_fchown
- .quad sys_setresuid
- .quad sys_getresuid
- .quad sys_setresgid /* 210 */
- .quad sys_getresgid
- .quad sys_chown
- .quad sys_setuid
- .quad sys_setgid
- .quad sys_setfsuid /* 215 */
- .quad sys_setfsgid
- .quad sys_pivot_root
- .quad sys_mincore
- .quad sys_madvise
- .quad compat_sys_getdents64 /* 220 getdents64 */
- .quad compat_sys_fcntl64
- .quad quiet_ni_syscall /* tux */
- .quad quiet_ni_syscall /* security */
- .quad sys_gettid
- .quad sys_readahead /* 225 */
- .quad sys_setxattr
- .quad sys_lsetxattr
- .quad sys_fsetxattr
- .quad sys_getxattr
- .quad sys_lgetxattr /* 230 */
- .quad sys_fgetxattr
- .quad sys_listxattr
- .quad sys_llistxattr
- .quad sys_flistxattr
- .quad sys_removexattr /* 235 */
- .quad sys_lremovexattr
- .quad sys_fremovexattr
- .quad sys_tkill
- .quad sys_sendfile64
- .quad compat_sys_futex /* 240 */
- .quad compat_sys_sched_setaffinity
- .quad compat_sys_sched_getaffinity
- .quad sys32_set_thread_area
- .quad sys32_get_thread_area
- .quad compat_sys_io_setup /* 245 */
- .quad sys_io_destroy
- .quad compat_sys_io_getevents
- .quad compat_sys_io_submit
- .quad sys_io_cancel
- .quad sys_fadvise64 /* 250 */
- .quad quiet_ni_syscall /* free_huge_pages */
- .quad sys_exit_group
- .quad sys32_lookup_dcookie
- .quad sys_epoll_create
- .quad sys_epoll_ctl /* 255 */
- .quad sys_epoll_wait
- .quad sys_remap_file_pages
- .quad sys_set_tid_address
- .quad sys32_timer_create
- .quad compat_sys_timer_settime /* 260 */
- .quad compat_sys_timer_gettime
- .quad sys_timer_getoverrun
- .quad sys_timer_delete
- .quad compat_sys_clock_settime
- .quad compat_sys_clock_gettime /* 265 */
- .quad compat_sys_clock_getres
- .quad compat_sys_clock_nanosleep
- .quad compat_sys_statfs64
- .quad compat_sys_fstatfs64
- .quad sys_tgkill /* 270 */
- .quad compat_sys_utimes
- .quad sys32_fadvise64_64
- .quad quiet_ni_syscall /* sys_vserver */
- .quad sys_mbind
- .quad compat_sys_get_mempolicy /* 275 */
- .quad sys_set_mempolicy
- .quad compat_sys_mq_open
- .quad sys_mq_unlink
- .quad compat_sys_mq_timedsend
- .quad compat_sys_mq_timedreceive /* 280 */
- .quad compat_sys_mq_notify
- .quad compat_sys_mq_getsetattr
- .quad quiet_ni_syscall /* reserved for kexec */
- .quad sys32_waitid
- .quad quiet_ni_syscall /* sys_altroot */
- .quad sys_add_key
- .quad sys_request_key
- .quad sys_keyctl
- /* don't forget to change IA32_NR_syscalls */
-ia32_syscall_end:
- .rept IA32_NR_syscalls-(ia32_syscall_end-ia32_sys_call_table)/8
- .quad ni_syscall
- .endr
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/ia32/syscall32.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/ia32/syscall32.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,143 +0,0 @@
-/* Copyright 2002,2003 Andi Kleen, SuSE Labs */
-
-/* vsyscall handling for 32bit processes. Map a stub page into it
- on demand because 32bit cannot reach the kernel's fixmaps */
-
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/gfp.h>
-#include <linux/init.h>
-#include <linux/stringify.h>
-#include <asm/proto.h>
-#include <asm/tlbflush.h>
-#include <asm/ia32_unistd.h>
-
-#define USE_INT80
-
-#ifdef USE_INT80
-/* 32bit VDSOs mapped into user space. */
-asm(".section \".init.data\",\"aw\"\n"
- "syscall32_int80:\n"
- ".incbin \"arch/xen/x86_64/ia32/vsyscall-int80.so\"\n"
- "syscall32_int80_end:\n"
- "syscall32_syscall:\n"
- ".incbin \"arch/xen/x86_64/ia32/vsyscall-syscall.so\"\n"
- "syscall32_syscall_end:\n"
- "syscall32_sysenter:\n"
- ".incbin \"arch/xen/x86_64/ia32/vsyscall-sysenter.so\"\n"
- "syscall32_sysenter_end:\n"
- ".previous");
-
-extern unsigned char syscall32_int80[], syscall32_int80_end[];
-#else
-/* 32bit VDSOs mapped into user space. */
-asm(".section \".init.data\",\"aw\"\n"
- "syscall32_syscall:\n"
- ".incbin \"arch/xen/x86_64/ia32/vsyscall-syscall.so\"\n"
- "syscall32_syscall_end:\n"
- "syscall32_sysenter:\n"
- ".incbin \"arch/xen/x86_64/ia32/vsyscall-sysenter.so\"\n"
- "syscall32_sysenter_end:\n"
- ".previous");
-
-static int use_sysenter = -1;
-#endif
-
-extern unsigned char syscall32_syscall[], syscall32_syscall_end[];
-extern unsigned char syscall32_sysenter[], syscall32_sysenter_end[];
-extern int sysctl_vsyscall32;
-
-char *syscall32_page;
-
-/*
- * Map the 32bit vsyscall page on demand.
- *
- * RED-PEN: This knows too much about high level VM.
- *
- * Alternative would be to generate a vma with appropriate backing options
- * and let it be handled by generic VM.
- */
-int __map_syscall32(struct mm_struct *mm, unsigned long address)
-{
- pgd_t *pgd;
- pud_t *pud;
- pte_t *pte;
- pmd_t *pmd;
- int err = -ENOMEM;
-
- spin_lock(&mm->page_table_lock);
- pgd = pgd_offset(mm, address);
- pud = pud_alloc(mm, pgd, address);
- if (pud) {
- pmd = pmd_alloc(mm, pud, address);
- if (pmd && (pte = pte_alloc_map(mm, pmd, address)) != NULL) {
- if (pte_none(*pte)) {
- set_pte(pte,
- mk_pte(virt_to_page(syscall32_page),
- PAGE_KERNEL_VSYSCALL32));
- }
- /* Flush only the local CPU. Other CPUs taking a fault
- will just end up here again
- This probably not needed and just paranoia. */
- __flush_tlb_one(address);
- err = 0;
- }
- }
- spin_unlock(&mm->page_table_lock);
- return err;
-}
-
-int map_syscall32(struct mm_struct *mm, unsigned long address)
-{
- int err;
- down_read(&mm->mmap_sem);
- err = __map_syscall32(mm, address);
- up_read(&mm->mmap_sem);
- return err;
-}
-
-static int __init init_syscall32(void)
-{
- syscall32_page = (void *)get_zeroed_page(GFP_KERNEL);
- if (!syscall32_page)
- panic("Cannot allocate syscall32 page");
- SetPageReserved(virt_to_page(syscall32_page));
-
-#ifdef USE_INT80
- /*
- * At this point we use int 0x80.
- */
- memcpy(syscall32_page, syscall32_int80,
- syscall32_int80_end - syscall32_int80);
-#else
-
- if (use_sysenter > 0) {
- memcpy(syscall32_page, syscall32_sysenter,
- syscall32_sysenter_end - syscall32_sysenter);
- } else {
- memcpy(syscall32_page, syscall32_syscall,
- syscall32_syscall_end - syscall32_syscall);
- }
-#endif
- return 0;
-}
-
-__initcall(init_syscall32);
-
-/* May not be __init: called during resume */
-void syscall32_cpu_init(void)
-{
-#ifndef USE_INT80
- if (use_sysenter < 0)
- use_sysenter = (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL);
-
- /* Load these always in case some future AMD CPU supports
- SYSENTER from compat mode too. */
- checking_wrmsrl(MSR_IA32_SYSENTER_CS, (u64)(__KERNEL_CS | 3));
- checking_wrmsrl(MSR_IA32_SYSENTER_ESP, 0ULL);
- checking_wrmsrl(MSR_IA32_SYSENTER_EIP, (u64)ia32_sysenter_target);
-
- wrmsrl(MSR_CSTAR, ia32_cstar_target);
-#endif
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/ia32/vsyscall-int80.S
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/ia32/vsyscall-int80.S Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,57 +0,0 @@
-/*
- * Code for the vsyscall page. This version uses the old int $0x80 method.
- *
- * NOTE:
- * 1) __kernel_vsyscall _must_ be first in this page.
- * 2) there are alignment constraints on this stub, see vsyscall-sigreturn.S
- * for details.
- */
-#include <asm/ia32_unistd.h>
-#include <asm/offset.h>
-
- .text
- .section .text.vsyscall,"ax"
- .globl __kernel_vsyscall
- .type __kernel_vsyscall,@function
-__kernel_vsyscall:
-.LSTART_vsyscall:
- int $0x80
- ret
-.LEND_vsyscall:
- .size __kernel_vsyscall,.-.LSTART_vsyscall
- .previous
-
- .section .eh_frame,"a",@progbits
-.LSTARTFRAME:
- .long .LENDCIE-.LSTARTCIE
-.LSTARTCIE:
- .long 0 /* CIE ID */
- .byte 1 /* Version number */
- .string "zR" /* NUL-terminated augmentation string */
- .uleb128 1 /* Code alignment factor */
- .sleb128 -4 /* Data alignment factor */
- .byte 8 /* Return address register column */
- .uleb128 1 /* Augmentation value length */
- .byte 0x1b /* DW_EH_PE_pcrel|DW_EH_PE_sdata4. */
- .byte 0x0c /* DW_CFA_def_cfa */
- .uleb128 4
- .uleb128 4
- .byte 0x88 /* DW_CFA_offset, column 0x8 */
- .uleb128 1
- .align 4
-.LENDCIE:
-
- .long .LENDFDE1-.LSTARTFDE1 /* Length FDE */
-.LSTARTFDE1:
- .long .LSTARTFDE1-.LSTARTFRAME /* CIE pointer */
- .long .LSTART_vsyscall-. /* PC-relative start address */
- .long .LEND_vsyscall-.LSTART_vsyscall
- .uleb128 0 /* Augmentation length */
- .align 4
-.LENDFDE1:
-
-/*
- * Get the common code for the sigreturn entry points.
- */
-#define SYSCALL_ENTER_KERNEL int $0x80
-#include "vsyscall-sigreturn.S"
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/Makefile
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/Makefile Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,68 +0,0 @@
-#
-# Makefile for the linux kernel.
-#
-XENARCH := $(subst ",,$(CONFIG_XENARCH))
-
-CFLAGS += -Iarch/$(XENARCH)/kernel
-
-extra-y := head.o head64.o init_task.o
-
-obj-y := process.o signal.o entry.o traps.o \
- ioport.o ldt.o setup.o \
- x8664_ksyms.o vsyscall.o \
- setup64.o e820.o irq.o early_printk.o
-c-obj-y := semaphore.o i387.o sys_x86_64.o \
- ptrace.o quirks.o syscall.o bootflag.o
-
-i386-obj-y := time.o
-obj-y += ../../i386/kernel/timers/
-
-s-obj-y :=
-
-#obj-$(CONFIG_X86_MCE) += mce.o
-#obj-$(CONFIG_MTRR) += ../../i386/kernel/cpu/mtrr/
-obj-$(CONFIG_ACPI_BOOT) += acpi/
-c-obj-$(CONFIG_X86_MSR) += msr.o
-obj-$(CONFIG_MICROCODE) += microcode.o
-obj-$(CONFIG_X86_CPUID) += cpuid.o
-#obj-$(CONFIG_SMP) += smp.o smpboot.o trampoline.o
-obj-$(CONFIG_X86_LOCAL_APIC) += apic.o
-c-obj-$(CONFIG_X86_LOCAL_APIC) += nmi.o
-obj-$(CONFIG_X86_IO_APIC) += io_apic.o mpparse.o
-c-obj-$(CONFIG_X86_IO_APIC) += genapic.o genapic_cluster.o genapic_flat.o
-#obj-$(CONFIG_PM) += suspend.o
-#obj-$(CONFIG_SOFTWARE_SUSPEND) += suspend_asm.o
-#obj-$(CONFIG_CPU_FREQ) += cpufreq/
-#obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
-#obj-$(CONFIG_GART_IOMMU) += pci-gart.o aperture.o
-c-obj-$(CONFIG_DUMMY_IOMMU) += pci-nommu.o pci-dma.o
-#obj-$(CONFIG_SWIOTLB) += swiotlb.o
-obj-$(CONFIG_KPROBES) += kprobes.o
-
-c-obj-$(CONFIG_MODULES) += module.o
-
-#obj-y += topology.o
-c-obj-y += intel_cacheinfo.o
-
-bootflag-y += ../../../i386/kernel/bootflag.o
-cpuid-$(subst m,y,$(CONFIG_X86_CPUID)) += ../../../i386/kernel/cpuid.o
-topology-y += ../../../i386/mach-default/topology.o
-swiotlb-$(CONFIG_SWIOTLB) += ../../../ia64/lib/swiotlb.o
-microcode-$(subst m,y,$(CONFIG_MICROCODE)) += ../../../i386/kernel/microcode.o
-intel_cacheinfo-y += ../../../i386/kernel/cpu/intel_cacheinfo.o
-quirks-y += ../../../i386/kernel/quirks.o
-
-c-link := init_task.o
-s-link := vsyscall.o
-
-$(patsubst %.o,$(obj)/%.c,$(c-obj-y) $(c-obj-m) $(c-link)) $(patsubst
%.o,$(obj)/%.S,$(s-obj-y) $(s-link)):
- @ln -fsn $(srctree)/arch/x86_64/kernel/$(notdir $@) $@
-
-$(patsubst %.o,$(obj)/%.c,$(i386-obj-y)):
- @ln -fsn $(srctree)/arch/xen/i386/kernel/$(notdir $@) $@
-
-obj-y += $(c-obj-y) $(s-obj-y) $(i386-obj-y)
-obj-m += $(c-obj-m)
-
-clean-files += $(patsubst %.o,%.c,$(c-obj-y) $(c-obj-m) $(c-obj-) $(c-link)
$(i386-obj-y))
-clean-files += $(patsubst %.o,%.S,$(s-obj-y) $(s-obj-) $(s-link))
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/acpi/Makefile
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/acpi/Makefile Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,20 +0,0 @@
-i386-obj-$(CONFIG_ACPI_BOOT) := boot.o
-c-obj-$(CONFIG_X86_IO_APIC) := earlyquirk.o
-c-obj-$(CONFIG_ACPI_SLEEP) += sleep.o
-s-obj-$(CONFIG_ACPI_SLEEP) += wakeup.o
-
-c-link :=
-
-$(patsubst %.o,$(obj)/%.c,$(c-obj-y) $(c-link)):
- @ln -fsn $(srctree)/arch/i386/kernel/acpi/$(notdir $@) $@
-
-$(patsubst %.o,$(obj)/%.S,$(s-obj-y) $(s-link)):
- @ln -fsn $(srctree)/arch/x86_64/kernel/acpi/$(notdir $@) $@
-
-$(patsubst %.o,$(obj)/%.c,$(i386-obj-y)):
- @ln -fsn $(srctree)/arch/xen/i386/kernel/acpi/$(notdir $@) $@
-
-obj-y += $(c-obj-y) $(s-obj-y) $(i386-obj-y)
-
-clean-files += $(patsubst %.o,%.c,$(c-obj-y) $(c-obj-) $(c-link))
-clean-files += $(patsubst %.o,%.S,$(s-obj-y) $(s-obj-) $(s-link))
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/apic.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/apic.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,200 +0,0 @@
-/*
- * Local APIC handling, local APIC timers
- *
- * (c) 1999, 2000 Ingo Molnar <mingo@xxxxxxxxxx>
- *
- * Fixes
- * Maciej W. Rozycki : Bits for genuine 82489DX APICs;
- * thanks to Eric Gilmore
- * and Rolf G. Tews
- * for testing these extensively.
- * Maciej W. Rozycki : Various updates and fixes.
- * Mikael Pettersson : Power Management for UP-APIC.
- * Pavel Machek and
- * Mikael Pettersson : PM converted to driver model.
- */
-
-#include <linux/config.h>
-#include <linux/init.h>
-
-#include <linux/mm.h>
-#include <linux/irq.h>
-#include <linux/delay.h>
-#include <linux/bootmem.h>
-#include <linux/smp_lock.h>
-#include <linux/interrupt.h>
-#include <linux/mc146818rtc.h>
-#include <linux/kernel_stat.h>
-#include <linux/sysdev.h>
-
-#include <asm/atomic.h>
-#include <asm/smp.h>
-#include <asm/mtrr.h>
-#include <asm/mpspec.h>
-#include <asm/desc.h>
-#include <asm/arch_hooks.h>
-#include <asm/hpet.h>
-
-#include "io_ports.h"
-
-/*
- * Debug level
- */
-int apic_verbosity;
-int disable_apic;
-
-void smp_local_timer_interrupt(struct pt_regs *regs)
-{
- int cpu = smp_processor_id();
-
- profile_tick(CPU_PROFILING, regs);
-#if 0
- if (--per_cpu(prof_counter, cpu) <= 0) {
- /*
- * The multiplier may have changed since the last time we got
- * to this point as a result of the user writing to
- * /proc/profile. In this case we need to adjust the APIC
- * timer accordingly.
- *
- * Interrupts are already masked off at this point.
- */
- per_cpu(prof_counter, cpu) = per_cpu(prof_multiplier, cpu);
- if (per_cpu(prof_counter, cpu) !=
- per_cpu(prof_old_multiplier, cpu)) {
- __setup_APIC_LVTT(calibration_result/
- per_cpu(prof_counter, cpu));
- per_cpu(prof_old_multiplier, cpu) =
- per_cpu(prof_counter, cpu);
- }
-
-#ifdef CONFIG_SMP
- update_process_times(user_mode(regs));
-#endif
- }
-#endif
-
- /*
- * We take the 'long' return path, and there every subsystem
- * grabs the appropriate locks (kernel lock/ irq lock).
- *
- * we might want to decouple profiling from the 'long path',
- * and do the profiling totally in assembly.
- *
- * Currently this isn't too much of an issue (performance wise),
- * we can take more than 100K local irqs per second on a 100 MHz P5.
- */
-}
-
-/*
- * Local APIC timer interrupt. This is the most natural way for doing
- * local interrupts, but local timer interrupts can be emulated by
- * broadcast interrupts too. [in case the hw doesn't support APIC timers]
- *
- * [ if a single-CPU system runs an SMP kernel then we call the local
- * interrupt as well. Thus we cannot inline the local irq ... ]
- */
-void smp_apic_timer_interrupt(struct pt_regs *regs)
-{
- /*
- * the NMI deadlock-detector uses this.
- */
- add_pda(apic_timer_irqs, 1);
-
- /*
- * NOTE! We'd better ACK the irq immediately,
- * because timer handling can be slow.
- */
- ack_APIC_irq();
- /*
- * update_process_times() expects us to have done irq_enter().
- * Besides, if we don't timer interrupts ignore the global
- * interrupt lock, which is the WrongThing (tm) to do.
- */
- irq_enter();
- smp_local_timer_interrupt(regs);
- irq_exit();
-}
-
-/*
- * This interrupt should _never_ happen with our APIC/SMP architecture
- */
-asmlinkage void smp_spurious_interrupt(void)
-{
- unsigned int v;
- irq_enter();
- /*
- * Check if this really is a spurious interrupt and ACK it
- * if it is a vectored one. Just in case...
- * Spurious interrupts should not be ACKed.
- */
- v = apic_read(APIC_ISR + ((SPURIOUS_APIC_VECTOR & ~0x1f) >> 1));
- if (v & (1 << (SPURIOUS_APIC_VECTOR & 0x1f)))
- ack_APIC_irq();
-
-#if 0
- static unsigned long last_warning;
- static unsigned long skipped;
-
- /* see sw-dev-man vol 3, chapter 7.4.13.5 */
- if (time_before(last_warning+30*HZ,jiffies)) {
- printk(KERN_INFO "spurious APIC interrupt on CPU#%d, %ld
skipped.\n",
- smp_processor_id(), skipped);
- last_warning = jiffies;
- skipped = 0;
- } else {
- skipped++;
- }
-#endif
- irq_exit();
-}
-
-/*
- * This interrupt should never happen with our APIC/SMP architecture
- */
-
-asmlinkage void smp_error_interrupt(void)
-{
- unsigned int v, v1;
-
- irq_enter();
- /* First tickle the hardware, only then report what went on. -- REW */
- v = apic_read(APIC_ESR);
- apic_write(APIC_ESR, 0);
- v1 = apic_read(APIC_ESR);
- ack_APIC_irq();
- atomic_inc(&irq_err_count);
-
- /* Here is what the APIC error bits mean:
- 0: Send CS error
- 1: Receive CS error
- 2: Send accept error
- 3: Receive accept error
- 4: Reserved
- 5: Send illegal vector
- 6: Received illegal vector
- 7: Illegal register address
- */
- printk (KERN_DEBUG "APIC error on CPU%d: %02x(%02x)\n",
- smp_processor_id(), v , v1);
- irq_exit();
-}
-
-int get_physical_broadcast(void)
-{
- return 0xff;
-}
-
-/*
- * This initializes the IO-APIC and APIC hardware if this is
- * a UP kernel.
- */
-int __init APIC_init_uniprocessor (void)
-{
-#ifdef CONFIG_X86_IO_APIC
- if (smp_found_config)
- if (!skip_ioapic_setup && nr_ioapics)
- setup_IO_APIC();
-#endif
-
- return 0;
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/asm-offsets.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/asm-offsets.c Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,70 +0,0 @@
-/*
- * Generate definitions needed by assembly language modules.
- * This code generates raw asm output which is post-processed to extract
- * and format the required data.
- */
-
-#include <linux/sched.h>
-#include <linux/stddef.h>
-#include <linux/errno.h>
-#include <linux/hardirq.h>
-#include <linux/suspend.h>
-#include <asm/pda.h>
-#include <asm/processor.h>
-#include <asm/segment.h>
-#include <asm/thread_info.h>
-#include <asm/ia32.h>
-
-#define DEFINE(sym, val) \
- asm volatile("\n->" #sym " %0 " #val : : "i" (val))
-
-#define BLANK() asm volatile("\n->" : : )
-
-int main(void)
-{
-#define ENTRY(entry) DEFINE(tsk_ ## entry, offsetof(struct task_struct, entry))
- ENTRY(state);
- ENTRY(flags);
- ENTRY(thread);
- ENTRY(pid);
- BLANK();
-#undef ENTRY
-#define ENTRY(entry) DEFINE(threadinfo_ ## entry, offsetof(struct thread_info,
entry))
- ENTRY(flags);
- ENTRY(addr_limit);
- ENTRY(preempt_count);
- BLANK();
-#undef ENTRY
-#define ENTRY(entry) DEFINE(pda_ ## entry, offsetof(struct x8664_pda, entry))
- ENTRY(kernelstack);
- ENTRY(oldrsp);
- ENTRY(pcurrent);
- ENTRY(irqrsp);
- ENTRY(irqcount);
- ENTRY(cpunumber);
- ENTRY(irqstackptr);
- ENTRY(kernel_mode);
- BLANK();
-#undef ENTRY
-#ifdef CONFIG_IA32_EMULATION
-#define ENTRY(entry) DEFINE(IA32_SIGCONTEXT_ ## entry, offsetof(struct
sigcontext_ia32, entry))
- ENTRY(eax);
- ENTRY(ebx);
- ENTRY(ecx);
- ENTRY(edx);
- ENTRY(esi);
- ENTRY(edi);
- ENTRY(ebp);
- ENTRY(esp);
- ENTRY(eip);
- BLANK();
-#undef ENTRY
- DEFINE(IA32_RT_SIGFRAME_sigcontext,
- offsetof (struct rt_sigframe32, uc.uc_mcontext));
- BLANK();
-#endif
- DEFINE(SIZEOF_PBE, sizeof(struct pbe));
- DEFINE(pbe_address, offsetof(struct pbe, address));
- DEFINE(pbe_orig_address, offsetof(struct pbe, orig_address));
- return 0;
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/e820.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/e820.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,533 +0,0 @@
-/*
- * Handle the memory map.
- * The functions here do the job until bootmem takes over.
- * $Id: e820.c,v 1.4 2002/09/19 19:25:32 ak Exp $
- */
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/bootmem.h>
-#include <linux/ioport.h>
-#include <linux/string.h>
-#include <asm/page.h>
-#include <asm/e820.h>
-#include <asm/proto.h>
-#include <asm/bootsetup.h>
-
-/*
- * PFN of last memory page.
- */
-unsigned long end_pfn;
-unsigned long end_user_pfn = MAXMEM>>PAGE_SHIFT;
-unsigned long end_pfn_map;
-
-/*
- * Add a memory region to the kernel e820 map.
- */
-void __init add_memory_region(unsigned long start, unsigned long size, int
type)
-{
- int x = e820.nr_map;
-
- if (x == E820MAX) {
- printk(KERN_ERR "Ooops! Too many entries in the memory map!\n");
- return;
- }
-
- e820.map[x].addr = start;
- e820.map[x].size = size;
- e820.map[x].type = type;
- e820.nr_map++;
-}
-
-#if 0
-extern char _end[];
-
-/*
- * end_pfn only includes RAM, while end_pfn_map includes all e820 entries.
- * The direct mapping extends to end_pfn_map, so that we can directly access
- * apertures, ACPI and other tables without having to play with fixmaps.
- */
-
-/*
- * Last pfn which the user wants to use.
- */
-
-extern struct resource code_resource, data_resource;
-
-/* Check for some hardcoded bad areas that early boot is not allowed to touch
*/
-static inline int bad_addr(unsigned long *addrp, unsigned long size)
-{
- unsigned long addr = *addrp, last = addr + size;
-
- /* various gunk below that needed for SMP startup */
- if (addr < 0x8000) {
- *addrp = 0x8000;
- return 1;
- }
-
- /* direct mapping tables of the kernel */
- if (last >= table_start<<PAGE_SHIFT && addr < table_end<<PAGE_SHIFT) {
- *addrp = table_end << PAGE_SHIFT;
- return 1;
- }
-
- /* initrd */
-#ifdef CONFIG_BLK_DEV_INITRD
- if (LOADER_TYPE && INITRD_START && last >= INITRD_START &&
- addr < INITRD_START+INITRD_SIZE) {
- *addrp = INITRD_START + INITRD_SIZE;
- return 1;
- }
-#endif
- /* kernel code + 640k memory hole (later should not be needed, but
- be paranoid for now) */
- if (last >= 640*1024 && addr < __pa_symbol(&_end)) {
- *addrp = __pa_symbol(&_end);
- return 1;
- }
- /* XXX ramdisk image here? */
- return 0;
-}
-
-int __init e820_mapped(unsigned long start, unsigned long end, unsigned type)
-{
- int i;
- for (i = 0; i < e820.nr_map; i++) {
- struct e820entry *ei = &e820.map[i];
- if (type && ei->type != type)
- continue;
- if (ei->addr >= end || ei->addr + ei->size < start)
- continue;
- return 1;
- }
- return 0;
-}
-
-/*
- * Find a free area in a specific range.
- */
-unsigned long __init find_e820_area(unsigned long start, unsigned long end,
unsigned size)
-{
- int i;
- for (i = 0; i < e820.nr_map; i++) {
- struct e820entry *ei = &e820.map[i];
- unsigned long addr = ei->addr, last;
- if (ei->type != E820_RAM)
- continue;
- if (addr < start)
- addr = start;
- if (addr > ei->addr + ei->size)
- continue;
- while (bad_addr(&addr, size) && addr+size < ei->addr + ei->size)
- ;
- last = addr + size;
- if (last > ei->addr + ei->size)
- continue;
- if (last > end)
- continue;
- return addr;
- }
- return -1UL;
-}
-
-/*
- * Free bootmem based on the e820 table for a node.
- */
-void __init e820_bootmem_free(pg_data_t *pgdat, unsigned long start,unsigned
long end)
-{
- int i;
- for (i = 0; i < e820.nr_map; i++) {
- struct e820entry *ei = &e820.map[i];
- unsigned long last, addr;
-
- if (ei->type != E820_RAM ||
- ei->addr+ei->size <= start ||
- ei->addr > end)
- continue;
-
- addr = round_up(ei->addr, PAGE_SIZE);
- if (addr < start)
- addr = start;
-
- last = round_down(ei->addr + ei->size, PAGE_SIZE);
- if (last >= end)
- last = end;
-
- if (last > addr && last-addr >= PAGE_SIZE)
- free_bootmem_node(pgdat, addr, last-addr);
- }
-}
-
-/*
- * Find the highest page frame number we have available
- */
-unsigned long __init e820_end_of_ram(void)
-{
- int i;
- unsigned long end_pfn = 0;
-
- for (i = 0; i < e820.nr_map; i++) {
- struct e820entry *ei = &e820.map[i];
- unsigned long start, end;
-
- start = round_up(ei->addr, PAGE_SIZE);
- end = round_down(ei->addr + ei->size, PAGE_SIZE);
- if (start >= end)
- continue;
- if (ei->type == E820_RAM) {
- if (end > end_pfn<<PAGE_SHIFT)
- end_pfn = end>>PAGE_SHIFT;
- } else {
- if (end > end_pfn_map<<PAGE_SHIFT)
- end_pfn_map = end>>PAGE_SHIFT;
- }
- }
-
- if (end_pfn > end_pfn_map)
- end_pfn_map = end_pfn;
- if (end_pfn_map > MAXMEM>>PAGE_SHIFT)
- end_pfn_map = MAXMEM>>PAGE_SHIFT;
- if (end_pfn > end_user_pfn)
- end_pfn = end_user_pfn;
- if (end_pfn > end_pfn_map)
- end_pfn = end_pfn_map;
-
- return end_pfn;
-}
-
-/*
- * Mark e820 reserved areas as busy for the resource manager.
- */
-void __init e820_reserve_resources(void)
-{
- int i;
- for (i = 0; i < e820.nr_map; i++) {
- struct resource *res;
- if (e820.map[i].addr + e820.map[i].size > 0x100000000ULL)
- continue;
- res = alloc_bootmem_low(sizeof(struct resource));
- switch (e820.map[i].type) {
- case E820_RAM: res->name = "System RAM"; break;
- case E820_ACPI: res->name = "ACPI Tables"; break;
- case E820_NVS: res->name = "ACPI Non-volatile Storage"; break;
- default: res->name = "reserved";
- }
- res->start = e820.map[i].addr;
- res->end = res->start + e820.map[i].size - 1;
- res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
- request_resource(&iomem_resource, res);
- if (e820.map[i].type == E820_RAM) {
- /*
- * We don't know which RAM region contains kernel data,
- * so we try it repeatedly and let the resource manager
- * test it.
- */
- request_resource(res, &code_resource);
- request_resource(res, &data_resource);
- }
- }
-}
-
-
-void __init e820_print_map(char *who)
-{
- int i;
-
- for (i = 0; i < e820.nr_map; i++) {
- printk(" %s: %016Lx - %016Lx ", who,
- (unsigned long long) e820.map[i].addr,
- (unsigned long long) (e820.map[i].addr +
e820.map[i].size));
- switch (e820.map[i].type) {
- case E820_RAM: printk("(usable)\n");
- break;
- case E820_RESERVED:
- printk("(reserved)\n");
- break;
- case E820_ACPI:
- printk("(ACPI data)\n");
- break;
- case E820_NVS:
- printk("(ACPI NVS)\n");
- break;
- default: printk("type %u\n", e820.map[i].type);
- break;
- }
- }
-}
-
-/*
- * Sanitize the BIOS e820 map.
- *
- * Some e820 responses include overlapping entries. The following
- * replaces the original e820 map with a new one, removing overlaps.
- *
- */
-static int __init sanitize_e820_map(struct e820entry * biosmap, char * pnr_map)
-{
- struct change_member {
- struct e820entry *pbios; /* pointer to original bios entry */
- unsigned long long addr; /* address for this change point */
- };
- static struct change_member change_point_list[2*E820MAX] __initdata;
- static struct change_member *change_point[2*E820MAX] __initdata;
- static struct e820entry *overlap_list[E820MAX] __initdata;
- static struct e820entry new_bios[E820MAX] __initdata;
- struct change_member *change_tmp;
- unsigned long current_type, last_type;
- unsigned long long last_addr;
- int chgidx, still_changing;
- int overlap_entries;
- int new_bios_entry;
- int old_nr, new_nr;
- int i;
-
- /*
- Visually we're performing the following (1,2,3,4 = memory
types)...
-
- Sample memory map (w/overlaps):
- ____22__________________
- ______________________4_
- ____1111________________
- _44_____________________
- 11111111________________
- ____________________33__
- ___________44___________
- __________33333_________
- ______________22________
- ___________________2222_
- _________111111111______
- _____________________11_
- _________________4______
-
- Sanitized equivalent (no overlap):
- 1_______________________
- _44_____________________
- ___1____________________
- ____22__________________
- ______11________________
- _________1______________
- __________3_____________
- ___________44___________
- _____________33_________
- _______________2________
- ________________1_______
- _________________4______
- ___________________2____
- ____________________33__
- ______________________4_
- */
-
- /* if there's only one memory region, don't bother */
- if (*pnr_map < 2)
- return -1;
-
- old_nr = *pnr_map;
-
- /* bail out if we find any unreasonable addresses in bios map */
- for (i=0; i<old_nr; i++)
- if (biosmap[i].addr + biosmap[i].size < biosmap[i].addr)
- return -1;
-
- /* create pointers for initial change-point information (for sorting) */
- for (i=0; i < 2*old_nr; i++)
- change_point[i] = &change_point_list[i];
-
- /* record all known change-points (starting and ending addresses) */
- chgidx = 0;
- for (i=0; i < old_nr; i++) {
- change_point[chgidx]->addr = biosmap[i].addr;
- change_point[chgidx++]->pbios = &biosmap[i];
- change_point[chgidx]->addr = biosmap[i].addr + biosmap[i].size;
- change_point[chgidx++]->pbios = &biosmap[i];
- }
-
- /* sort change-point list by memory addresses (low -> high) */
- still_changing = 1;
- while (still_changing) {
- still_changing = 0;
- for (i=1; i < 2*old_nr; i++) {
- /* if <current_addr> > <last_addr>, swap */
- /* or, if current=<start_addr> & last=<end_addr>, swap
*/
- if ((change_point[i]->addr < change_point[i-1]->addr) ||
- ((change_point[i]->addr ==
change_point[i-1]->addr) &&
- (change_point[i]->addr ==
change_point[i]->pbios->addr) &&
- (change_point[i-1]->addr !=
change_point[i-1]->pbios->addr))
- )
- {
- change_tmp = change_point[i];
- change_point[i] = change_point[i-1];
- change_point[i-1] = change_tmp;
- still_changing=1;
- }
- }
- }
-
- /* create a new bios memory map, removing overlaps */
- overlap_entries=0; /* number of entries in the overlap table */
- new_bios_entry=0; /* index for creating new bios map entries */
- last_type = 0; /* start with undefined memory type */
- last_addr = 0; /* start with 0 as last starting address */
- /* loop through change-points, determining affect on the new bios map */
- for (chgidx=0; chgidx < 2*old_nr; chgidx++)
- {
- /* keep track of all overlapping bios entries */
- if (change_point[chgidx]->addr ==
change_point[chgidx]->pbios->addr)
- {
- /* add map entry to overlap list (> 1 entry implies an
overlap) */
-
overlap_list[overlap_entries++]=change_point[chgidx]->pbios;
- }
- else
- {
- /* remove entry from list (order independent, so swap
with last) */
- for (i=0; i<overlap_entries; i++)
- {
- if (overlap_list[i] ==
change_point[chgidx]->pbios)
- overlap_list[i] =
overlap_list[overlap_entries-1];
- }
- overlap_entries--;
- }
- /* if there are overlapping entries, decide which "type" to use
*/
- /* (larger value takes precedence -- 1=usable,
2,3,4,4+=unusable) */
- current_type = 0;
- for (i=0; i<overlap_entries; i++)
- if (overlap_list[i]->type > current_type)
- current_type = overlap_list[i]->type;
- /* continue building up new bios map based on this information
*/
- if (current_type != last_type) {
- if (last_type != 0) {
- new_bios[new_bios_entry].size =
- change_point[chgidx]->addr - last_addr;
- /* move forward only if the new size was
non-zero */
- if (new_bios[new_bios_entry].size != 0)
- if (++new_bios_entry >= E820MAX)
- break; /* no more space left
for new bios entries */
- }
- if (current_type != 0) {
- new_bios[new_bios_entry].addr =
change_point[chgidx]->addr;
- new_bios[new_bios_entry].type = current_type;
- last_addr=change_point[chgidx]->addr;
- }
- last_type = current_type;
- }
- }
- new_nr = new_bios_entry; /* retain count for new bios entries */
-
- /* copy new bios mapping into original location */
- memcpy(biosmap, new_bios, new_nr*sizeof(struct e820entry));
- *pnr_map = new_nr;
-
- return 0;
-}
-
-/*
- * Copy the BIOS e820 map into a safe place.
- *
- * Sanity-check it while we're at it..
- *
- * If we're lucky and live on a modern system, the setup code
- * will have given us a memory map that we can use to properly
- * set up memory. If we aren't, we'll fake a memory map.
- *
- * We check to see that the memory map contains at least 2 elements
- * before we'll use it, because the detection code in setup.S may
- * not be perfect and most every PC known to man has two memory
- * regions: one from 0 to 640k, and one from 1mb up. (The IBM
- * thinkpad 560x, for example, does not cooperate with the memory
- * detection code.)
- */
-static int __init copy_e820_map(struct e820entry * biosmap, int nr_map)
-{
- /* Only one memory region (or negative)? Ignore it */
- if (nr_map < 2)
- return -1;
-
- do {
- unsigned long start = biosmap->addr;
- unsigned long size = biosmap->size;
- unsigned long end = start + size;
- unsigned long type = biosmap->type;
-
- /* Overflow in 64 bits? Ignore the memory map. */
- if (start > end)
- return -1;
-
- /*
- * Some BIOSes claim RAM in the 640k - 1M region.
- * Not right. Fix it up.
- *
- * This should be removed on Hammer which is supposed to not
- * have non e820 covered ISA mappings there, but I had some
strange
- * problems so it stays for now. -AK
- */
- if (type == E820_RAM) {
- if (start < 0x100000ULL && end > 0xA0000ULL) {
- if (start < 0xA0000ULL)
- add_memory_region(start,
0xA0000ULL-start, type);
- if (end <= 0x100000ULL)
- continue;
- start = 0x100000ULL;
- size = end - start;
- }
- }
-
- add_memory_region(start, size, type);
- } while (biosmap++,--nr_map);
- return 0;
-}
-
-void __init setup_memory_region(void)
-{
- char *who = "BIOS-e820";
-
- /*
- * Try to copy the BIOS-supplied E820-map.
- *
- * Otherwise fake a memory map; one section from 0k->640k,
- * the next section from 1mb->appropriate_mem_k
- */
- sanitize_e820_map(E820_MAP, &E820_MAP_NR);
- if (copy_e820_map(E820_MAP, E820_MAP_NR) < 0) {
- unsigned long mem_size;
-
- /* compare results from other methods and take the greater */
- if (ALT_MEM_K < EXT_MEM_K) {
- mem_size = EXT_MEM_K;
- who = "BIOS-88";
- } else {
- mem_size = ALT_MEM_K;
- who = "BIOS-e801";
- }
-
- e820.nr_map = 0;
- add_memory_region(0, LOWMEMSIZE(), E820_RAM);
- add_memory_region(HIGH_MEMORY, mem_size << 10, E820_RAM);
- }
- printk(KERN_INFO "BIOS-provided physical RAM map:\n");
- e820_print_map(who);
-}
-#endif
-
-extern unsigned long xen_override_max_pfn;
-
-void __init parse_memopt(char *p, char **from)
-{
- /*
- * mem=XXX[kKmM] limits kernel memory to XXX+1MB
- *
- * It would be more logical to count from 0 instead of from
- * HIGH_MEMORY, but we keep that for now for i386 compatibility.
- *
- * No support for custom mapping like i386. The reason is
- * that we need to read the e820 map anyways to handle the
- * ACPI mappings in the direct map. Also on x86-64 there
- * should be always a good e820 map. This is only an upper
- * limit, you cannot force usage of memory not in e820.
- *
- * -AK
- */
- end_user_pfn = memparse(p, from) + HIGH_MEMORY;
- end_user_pfn >>= PAGE_SHIFT;
- xen_override_max_pfn = (unsigned long) end_user_pfn;
-}
-
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/early_printk.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/early_printk.c Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,242 +0,0 @@
-#include <linux/config.h>
-#include <linux/console.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/string.h>
-#include <asm/io.h>
-#include <asm/processor.h>
-
-/* Simple VGA output */
-
-#ifdef __i386__
-#define VGABASE (__ISA_IO_base + 0xb8000)
-#else
-#define VGABASE ((void __iomem *)0xffffffff800b8000UL)
-#endif
-
-#define MAX_YPOS 25
-#define MAX_XPOS 80
-
-static int current_ypos = 1, current_xpos = 0;
-
-static void early_vga_write(struct console *con, const char *str, unsigned n)
-{
- char c;
- int i, k, j;
-
- while ((c = *str++) != '\0' && n-- > 0) {
- if (current_ypos >= MAX_YPOS) {
- /* scroll 1 line up */
- for (k = 1, j = 0; k < MAX_YPOS; k++, j++) {
- for (i = 0; i < MAX_XPOS; i++) {
- writew(readw(VGABASE + 2*(MAX_XPOS*k +
i)),
- VGABASE + 2*(MAX_XPOS*j + i));
- }
- }
- for (i = 0; i < MAX_XPOS; i++)
- writew(0x720, VGABASE + 2*(MAX_XPOS*j + i));
- current_ypos = MAX_YPOS-1;
- }
- if (c == '\n') {
- current_xpos = 0;
- current_ypos++;
- } else if (c != '\r') {
- writew(((0x7 << 8) | (unsigned short) c),
- VGABASE + 2*(MAX_XPOS*current_ypos +
- current_xpos++));
- if (current_xpos >= MAX_XPOS) {
- current_xpos = 0;
- current_ypos++;
- }
- }
- }
-}
-
-static struct console early_vga_console = {
- .name = "earlyvga",
- .write = early_vga_write,
- .flags = CON_PRINTBUFFER,
- .index = -1,
-};
-
-#ifndef CONFIG_XEN
-/* Serial functions loosely based on a similar package from Klaus P. Gerlicher
*/
-
-int early_serial_base = 0x3f8; /* ttyS0 */
-
-#define XMTRDY 0x20
-
-#define DLAB 0x80
-
-#define TXR 0 /* Transmit register (WRITE) */
-#define RXR 0 /* Receive register (READ) */
-#define IER 1 /* Interrupt Enable */
-#define IIR 2 /* Interrupt ID */
-#define FCR 2 /* FIFO control */
-#define LCR 3 /* Line control */
-#define MCR 4 /* Modem control */
-#define LSR 5 /* Line Status */
-#define MSR 6 /* Modem Status */
-#define DLL 0 /* Divisor Latch Low */
-#define DLH 1 /* Divisor latch High */
-
-static int early_serial_putc(unsigned char ch)
-{
- unsigned timeout = 0xffff;
- while ((inb(early_serial_base + LSR) & XMTRDY) == 0 && --timeout)
- cpu_relax();
- outb(ch, early_serial_base + TXR);
- return timeout ? 0 : -1;
-}
-
-static void early_serial_write(struct console *con, const char *s, unsigned n)
-{
- while (*s && n-- > 0) {
- early_serial_putc(*s);
- if (*s == '\n')
- early_serial_putc('\r');
- s++;
- }
-}
-
-#define DEFAULT_BAUD 9600
-
-static __init void early_serial_init(char *s)
-{
- unsigned char c;
- unsigned divisor;
- unsigned baud = DEFAULT_BAUD;
- char *e;
-
- if (*s == ',')
- ++s;
-
- if (*s) {
- unsigned port;
- if (!strncmp(s,"0x",2)) {
- early_serial_base = simple_strtoul(s, &e, 16);
- } else {
- static int bases[] = { 0x3f8, 0x2f8 };
-
- if (!strncmp(s,"ttyS",4))
- s += 4;
- port = simple_strtoul(s, &e, 10);
- if (port > 1 || s == e)
- port = 0;
- early_serial_base = bases[port];
- }
- s += strcspn(s, ",");
- if (*s == ',')
- s++;
- }
-
- outb(0x3, early_serial_base + LCR); /* 8n1 */
- outb(0, early_serial_base + IER); /* no interrupt */
- outb(0, early_serial_base + FCR); /* no fifo */
- outb(0x3, early_serial_base + MCR); /* DTR + RTS */
-
- if (*s) {
- baud = simple_strtoul(s, &e, 0);
- if (baud == 0 || s == e)
- baud = DEFAULT_BAUD;
- }
-
- divisor = 115200 / baud;
- c = inb(early_serial_base + LCR);
- outb(c | DLAB, early_serial_base + LCR);
- outb(divisor & 0xff, early_serial_base + DLL);
- outb((divisor >> 8) & 0xff, early_serial_base + DLH);
- outb(c & ~DLAB, early_serial_base + LCR);
-}
-#else
-
-static void
-early_serial_write(struct console *con, const char *s, unsigned count)
-{
- int n;
-
- while (count > 0) {
- n = HYPERVISOR_console_io(CONSOLEIO_write, count, (char *)s);
- if (n <= 0)
- break;
- count -= n;
- s += n;
- }
-}
-
-static __init void early_serial_init(char *s)
-{
-}
-#endif
-
-static struct console early_serial_console = {
- .name = "earlyser",
- .write = early_serial_write,
- .flags = CON_PRINTBUFFER,
- .index = -1,
-};
-
-/* Direct interface for emergencies */
-struct console *early_console = &early_vga_console;
-static int early_console_initialized = 0;
-
-void early_printk(const char *fmt, ...)
-{
- char buf[512];
- int n;
- va_list ap;
-
- va_start(ap,fmt);
- n = vscnprintf(buf,512,fmt,ap);
- early_console->write(early_console,buf,n);
- va_end(ap);
-}
-
-static int keep_early;
-
-int __init setup_early_printk(char *opt)
-{
- char *space;
- char buf[256];
-
- if (early_console_initialized)
- return -1;
-
- opt = strchr(opt, '=') + 1;
-
- strlcpy(buf,opt,sizeof(buf));
- space = strchr(buf, ' ');
- if (space)
- *space = 0;
-
- if (strstr(buf,"keep"))
- keep_early = 1;
-
- if (!strncmp(buf, "serial", 6)) {
- early_serial_init(buf + 6);
- early_console = &early_serial_console;
- } else if (!strncmp(buf, "ttyS", 4)) {
- early_serial_init(buf);
- early_console = &early_serial_console;
- } else if (!strncmp(buf, "vga", 3)) {
- early_console = &early_vga_console;
- }
- early_console_initialized = 1;
- register_console(early_console);
- return 0;
-}
-
-void __init disable_early_printk(void)
-{
- if (!early_console_initialized || !early_console)
- return;
- if (!keep_early) {
- printk("disabling early console\n");
- unregister_console(early_console);
- early_console_initialized = 0;
- } else {
- printk("keeping early console\n");
- }
-}
-
-__setup("earlyprintk=", setup_early_printk);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/entry.S
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/entry.S Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,1047 +0,0 @@
-/*
- * linux/arch/x86_64/entry.S
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- * Copyright (C) 2000, 2001, 2002 Andi Kleen SuSE Labs
- * Copyright (C) 2000 Pavel Machek <pavel@xxxxxxx>
- *
- * $Id$
- *
- * Jun Nakajima <jun.nakajima@xxxxxxxxx>
- * Asit Mallick <asit.k.mallick@xxxxxxxxx>
- * Modified for Xen
- */
-
-/*
- * entry.S contains the system-call and fault low-level handling routines.
- *
- * NOTE: This code handles signal-recognition, which happens every time
- * after an interrupt and after each system call.
- *
- * Normal syscalls and interrupts don't save a full stack frame, this is
- * only done for syscall tracing, signals or fork/exec et.al.
- *
- * A note on terminology:
- * - top of stack: Architecture defined interrupt frame from SS to RIP
- * at the top of the kernel process stack.
- * - partial stack frame: partially saved registers upto R11.
- * - full stack frame: Like partial stack frame, but all register saved.
- *
- * TODO:
- * - schedule it carefully for the final hardware.
- */
-
-#define ASSEMBLY 1
-#include <linux/config.h>
-#include <linux/linkage.h>
-#include <asm/segment.h>
-#include <asm/smp.h>
-#include <asm/cache.h>
-#include <asm/errno.h>
-#include <asm/dwarf2.h>
-#include <asm/calling.h>
-#include <asm/asm_offset.h>
-#include <asm/msr.h>
-#include <asm/unistd.h>
-#include <asm/thread_info.h>
-#include <asm/hw_irq.h>
-#include <asm/errno.h>
-#include <asm-xen/xen-public/arch-x86_64.h>
-
-#include "irq_vectors.h"
-
-#include "xen_entry.S"
-
- .code64
-
-#ifdef CONFIG_PREEMPT
-#define preempt_stop XEN_BLOCK_EVENTS(%rsi)
-#else
-#define preempt_stop
-#define retint_kernel retint_restore_args
-#endif
-
-/*
- * C code is not supposed to know about undefined top of stack. Every time
- * a C function with an pt_regs argument is called from the SYSCALL based
- * fast path FIXUP_TOP_OF_STACK is needed.
- * RESTORE_TOP_OF_STACK syncs the syscall state after any possible ptregs
- * manipulation.
- */
-
- /* %rsp:at FRAMEEND */
- .macro FIXUP_TOP_OF_STACK tmp
- movq $__USER_CS,CS(%rsp)
- movq $-1,RCX(%rsp)
- .endm
-
- .macro RESTORE_TOP_OF_STACK tmp,offset=0
- .endm
-
- .macro FAKE_STACK_FRAME child_rip
- /* push in order ss, rsp, eflags, cs, rip */
- xorq %rax, %rax
- pushq %rax /* ss */
- CFI_ADJUST_CFA_OFFSET 8
- pushq %rax /* rsp */
- CFI_ADJUST_CFA_OFFSET 8
- CFI_OFFSET rip,0
- pushq $(1<<9) /* eflags - interrupts on */
- CFI_ADJUST_CFA_OFFSET 8
- pushq $__KERNEL_CS /* cs */
- CFI_ADJUST_CFA_OFFSET 8
- pushq \child_rip /* rip */
- CFI_ADJUST_CFA_OFFSET 8
- CFI_OFFSET rip,0
- pushq %rax /* orig rax */
- CFI_ADJUST_CFA_OFFSET 8
- .endm
-
- .macro UNFAKE_STACK_FRAME
- addq $8*6, %rsp
- CFI_ADJUST_CFA_OFFSET -(6*8)
- .endm
-
- .macro CFI_DEFAULT_STACK
- CFI_ADJUST_CFA_OFFSET (SS)
- CFI_OFFSET r15,R15-SS
- CFI_OFFSET r14,R14-SS
- CFI_OFFSET r13,R13-SS
- CFI_OFFSET r12,R12-SS
- CFI_OFFSET rbp,RBP-SS
- CFI_OFFSET rbx,RBX-SS
- CFI_OFFSET r11,R11-SS
- CFI_OFFSET r10,R10-SS
- CFI_OFFSET r9,R9-SS
- CFI_OFFSET r8,R8-SS
- CFI_OFFSET rax,RAX-SS
- CFI_OFFSET rcx,RCX-SS
- CFI_OFFSET rdx,RDX-SS
- CFI_OFFSET rsi,RSI-SS
- CFI_OFFSET rdi,RDI-SS
- CFI_OFFSET rsp,RSP-SS
- CFI_OFFSET rip,RIP-SS
- .endm
-
- /*
- * Must be consistent with the definition in arch_x86_64.h:
- * struct switch_to_user {
- * u64 rax, r11, rcx, flags, rip, cs, rflags, rsp, ss;
- * };
- * #define VGCF_IN_SYSCALL (1<<8)
- */
- .macro SWITCH_TO_USER flag
- movl $0,%gs:pda_kernel_mode # change to user mode
- subq $8*4,%rsp # reuse rip, cs, rflags, rsp, ss in
the stack
- movq %rax,(%rsp)
- movq %r11,1*8(%rsp)
- movq %rcx,2*8(%rsp) # we saved %rcx upon exceptions
- movq $\flag,3*8(%rsp)
- movq $__HYPERVISOR_switch_to_user,%rax
- syscall
- .endm
-
- .macro SWITCH_TO_KERNEL ssoff,adjust=0
- btsq $0,%gs:pda_kernel_mode
- jc 1f
- orb $1,\ssoff-\adjust+4(%rsp)
-1:
- .endm
-
-/*
- * A newly forked process directly context switches into this.
- */
-/* rdi: prev */
-ENTRY(ret_from_fork)
- CFI_STARTPROC
- CFI_DEFAULT_STACK
- call schedule_tail
- GET_THREAD_INFO(%rcx)
- testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT),threadinfo_flags(%rcx)
- jnz rff_trace
-rff_action:
- RESTORE_REST
- testl $3,CS-ARGOFFSET(%rsp) # from kernel_thread?
- je int_ret_from_sys_call
- testl $_TIF_IA32,threadinfo_flags(%rcx)
- jnz int_ret_from_sys_call
- RESTORE_TOP_OF_STACK %rdi,ARGOFFSET
- jmp ret_from_sys_call
-rff_trace:
- movq %rsp,%rdi
- call syscall_trace_leave
- GET_THREAD_INFO(%rcx)
- jmp rff_action
- CFI_ENDPROC
-
-/*
- * System call entry. Upto 6 arguments in registers are supported.
- *
- * SYSCALL does not save anything on the stack and does not change the
- * stack pointer.
- */
-
-/*
- * Register setup:
- * rax system call number
- * rdi arg0
- * rcx return address for syscall/sysret, C arg3
- * rsi arg1
- * rdx arg2
- * r10 arg3 (--> moved to rcx for C)
- * r8 arg4
- * r9 arg5
- * r11 eflags for syscall/sysret, temporary for C
- * r12-r15,rbp,rbx saved by C code, not touched.
- *
- * Interrupts are off on entry.
- * Only called from user space.
- *
- * XXX if we had a free scratch register we could save the RSP into the stack
frame
- * and report it properly in ps. Unfortunately we haven't.
- */
-
-ENTRY(system_call)
- CFI_STARTPROC
- SAVE_ARGS -8,0
- movq %rax,ORIG_RAX-ARGOFFSET(%rsp)
- XEN_UNBLOCK_EVENTS(%r11)
- GET_THREAD_INFO(%rcx)
- testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT),threadinfo_flags(%rcx)
- jnz tracesys
- cmpq $__NR_syscall_max,%rax
- ja badsys
- movq %r10,%rcx
- call *sys_call_table(,%rax,8) # XXX: rip relative
- movq %rax,RAX-ARGOFFSET(%rsp)
-/*
- * Syscall return path ending with SYSRET (fast path)
- * Has incomplete stack frame and undefined top of stack.
- */
- .globl ret_from_sys_call
-ret_from_sys_call:
- movl $_TIF_WORK_MASK,%edi
- /* edi: flagmask */
-sysret_check:
- GET_THREAD_INFO(%rcx)
- XEN_BLOCK_EVENTS(%rsi)
- movl threadinfo_flags(%rcx),%edx
- andl %edi,%edx
- jnz sysret_careful
- XEN_UNBLOCK_EVENTS(%rsi)
- RESTORE_ARGS 0,8,0
- SWITCH_TO_USER VGCF_IN_SYSCALL
-
- /* Handle reschedules */
- /* edx: work, edi: workmask */
-sysret_careful:
- bt $TIF_NEED_RESCHED,%edx
- jnc sysret_signal
- XEN_BLOCK_EVENTS(%rsi)
- pushq %rdi
- call schedule
- popq %rdi
- jmp sysret_check
-
- /* Handle a signal */
-sysret_signal:
-/* sti */
- XEN_UNBLOCK_EVENTS(%rsi)
- testl $(_TIF_SIGPENDING|_TIF_NOTIFY_RESUME|_TIF_SINGLESTEP),%edx
- jz 1f
-
- /* Really a signal */
- /* edx: work flags (arg3) */
- leaq do_notify_resume(%rip),%rax
- leaq -ARGOFFSET(%rsp),%rdi # &pt_regs -> arg1
- xorl %esi,%esi # oldset -> arg2
- call ptregscall_common
-1: movl $_TIF_NEED_RESCHED,%edi
- jmp sysret_check
-
- /* Do syscall tracing */
-tracesys:
- SAVE_REST
- movq $-ENOSYS,RAX(%rsp)
- FIXUP_TOP_OF_STACK %rdi
- movq %rsp,%rdi
- call syscall_trace_enter
- LOAD_ARGS ARGOFFSET /* reload args from stack in case ptrace changed
it */
- RESTORE_REST
- cmpq $__NR_syscall_max,%rax
- ja 1f
- movq %r10,%rcx /* fixup for C */
- call *sys_call_table(,%rax,8)
- movq %rax,RAX-ARGOFFSET(%rsp)
-1: SAVE_REST
- movq %rsp,%rdi
- call syscall_trace_leave
- RESTORE_TOP_OF_STACK %rbx
- RESTORE_REST
- jmp ret_from_sys_call
-
-badsys:
- movq $-ENOSYS,RAX-ARGOFFSET(%rsp)
- jmp ret_from_sys_call
-
-/*
- * Syscall return path ending with IRET.
- * Has correct top of stack, but partial stack frame.
- */
-ENTRY(int_ret_from_sys_call)
- XEN_BLOCK_EVENTS(%rsi)
- testb $3,CS-ARGOFFSET(%rsp)
- jnz 1f
- /* Need to set the proper %ss (not NULL) for ring 3 iretq */
- movl $__KERNEL_DS,SS-ARGOFFSET(%rsp)
- jmp retint_restore_args # retrun from ring3 kernel
-1:
- movl $_TIF_ALLWORK_MASK,%edi
- /* edi: mask to check */
-int_with_check:
- GET_THREAD_INFO(%rcx)
- movl threadinfo_flags(%rcx),%edx
- andl %edi,%edx
- jnz int_careful
- jmp retint_restore_args
-
- /* Either reschedule or signal or syscall exit tracking needed. */
- /* First do a reschedule test. */
- /* edx: work, edi: workmask */
-int_careful:
- bt $TIF_NEED_RESCHED,%edx
- jnc int_very_careful
-/* sti */
- XEN_UNBLOCK_EVENTS(%rsi)
- pushq %rdi
- call schedule
- popq %rdi
- jmp int_with_check
-
- /* handle signals and tracing -- both require a full stack frame */
-int_very_careful:
-/* sti */
- XEN_UNBLOCK_EVENTS(%rsi)
- SAVE_REST
- /* Check for syscall exit trace */
- testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SINGLESTEP),%edx
- jz int_signal
- pushq %rdi
- leaq 8(%rsp),%rdi # &ptregs -> arg1
- call syscall_trace_leave
- popq %rdi
- btr $TIF_SYSCALL_TRACE,%edi
- btr $TIF_SYSCALL_AUDIT,%edi
- btr $TIF_SINGLESTEP,%edi
- jmp int_restore_rest
-
-int_signal:
- testl $(_TIF_NOTIFY_RESUME|_TIF_SIGPENDING|_TIF_SINGLESTEP),%edx
- jz 1f
- movq %rsp,%rdi # &ptregs -> arg1
- xorl %esi,%esi # oldset -> arg2
- call do_notify_resume
-1: movl $_TIF_NEED_RESCHED,%edi
-int_restore_rest:
- RESTORE_REST
- jmp int_with_check
- CFI_ENDPROC
-
-/*
- * Certain special system calls that need to save a complete full stack frame.
- */
-
- .macro PTREGSCALL label,func,arg
- .globl \label
-\label:
- leaq \func(%rip),%rax
- leaq -ARGOFFSET+8(%rsp),\arg /* 8 for return address */
- jmp ptregscall_common
- .endm
-
- PTREGSCALL stub_clone, sys_clone, %r8
- PTREGSCALL stub_fork, sys_fork, %rdi
- PTREGSCALL stub_vfork, sys_vfork, %rdi
- PTREGSCALL stub_rt_sigsuspend, sys_rt_sigsuspend, %rdx
- PTREGSCALL stub_sigaltstack, sys_sigaltstack, %rdx
- PTREGSCALL stub_iopl, sys_iopl, %rsi
-
-ENTRY(ptregscall_common)
- CFI_STARTPROC
- popq %r11
- CFI_ADJUST_CFA_OFFSET -8
- SAVE_REST
- movq %r11, %r15
- FIXUP_TOP_OF_STACK %r11
- call *%rax
- RESTORE_TOP_OF_STACK %r11
- movq %r15, %r11
- RESTORE_REST
- pushq %r11
- CFI_ADJUST_CFA_OFFSET 8
- ret
- CFI_ENDPROC
-
-ENTRY(stub_execve)
- CFI_STARTPROC
- popq %r11
- CFI_ADJUST_CFA_OFFSET -8
- SAVE_REST
- movq %r11, %r15
- FIXUP_TOP_OF_STACK %r11
- call sys_execve
- GET_THREAD_INFO(%rcx)
- bt $TIF_IA32,threadinfo_flags(%rcx)
- jc exec_32bit
- RESTORE_TOP_OF_STACK %r11
- movq %r15, %r11
- RESTORE_REST
- push %r11
- ret
-
-exec_32bit:
- CFI_ADJUST_CFA_OFFSET REST_SKIP
- movq %rax,RAX(%rsp)
- RESTORE_REST
- jmp int_ret_from_sys_call
- CFI_ENDPROC
-
-/*
- * sigreturn is special because it needs to restore all registers on return.
- * This cannot be done with SYSRET, so use the IRET return path instead.
- */
-ENTRY(stub_rt_sigreturn)
- CFI_STARTPROC
- addq $8, %rsp
- SAVE_REST
- movq %rsp,%rdi
- FIXUP_TOP_OF_STACK %r11
- call sys_rt_sigreturn
- movq %rax,RAX(%rsp) # fixme, this could be done at the higher layer
- RESTORE_REST
- jmp int_ret_from_sys_call
- CFI_ENDPROC
-
-
-/*
- * Interrupt entry/exit.
- *
- * Interrupt entry points save only callee clobbered registers in fast path.
- *
- * Entry runs with interrupts off.
- */
-
-/* 0(%rsp): interrupt number */
- .macro interrupt func
- CFI_STARTPROC simple
- CFI_DEF_CFA rsp,(SS-RDI)
- CFI_REL_OFFSET rsp,(RSP-ORIG_RAX)
- CFI_REL_OFFSET rip,(RIP-ORIG_RAX)
- cld
-#ifdef CONFIG_DEBUG_INFO
- SAVE_ALL
- movq %rsp,%rdi
- /*
- * Setup a stack frame pointer. This allows gdb to trace
- * back to the original stack.
- */
- movq %rsp,%rbp
- CFI_DEF_CFA_REGISTER rbp
-#else
- SAVE_ARGS
- leaq -ARGOFFSET(%rsp),%rdi # arg1 for handler
-#endif
-#if 0 /* For Xen we don't need to do this */
- testl $3,CS(%rdi)
- je 1f
- swapgs
-#endif
-1: addl $1,%gs:pda_irqcount # RED-PEN should check preempt count
- movq %gs:pda_irqstackptr,%rax
- cmoveq %rax,%rsp
- pushq %rdi # save old stack
- call \func
- .endm
-
-retint_check:
- movl threadinfo_flags(%rcx),%edx
- andl %edi,%edx
- jnz retint_careful
-retint_restore_args:
- movb EVENT_MASK-REST_SKIP(%rsp), %al
- notb %al # %al == ~saved_mask
- XEN_GET_VCPU_INFO(%rsi)
- andb evtchn_upcall_mask(%rsi),%al
- andb $1,%al # %al == mask & ~saved_mask
- jnz restore_all_enable_events # != 0 => reenable event delivery
- XEN_PUT_VCPU_INFO(%rsi)
-
- RESTORE_ARGS 0,8,0
- testb $3,8(%rsp) # check CS
- jnz user_mode
-kernel_mode:
- orb $3,1*8(%rsp)
- iretq
-user_mode:
- SWITCH_TO_USER 0
-
- /* edi: workmask, edx: work */
-retint_careful:
- bt $TIF_NEED_RESCHED,%edx
- jnc retint_signal
- XEN_UNBLOCK_EVENTS(%rsi)
-/* sti */
- pushq %rdi
- call schedule
- popq %rdi
- XEN_BLOCK_EVENTS(%rsi)
- GET_THREAD_INFO(%rcx)
-/* cli */
- jmp retint_check
-
-retint_signal:
- testl $(_TIF_SIGPENDING|_TIF_NOTIFY_RESUME|_TIF_SINGLESTEP),%edx
- jz retint_restore_args
- XEN_UNBLOCK_EVENTS(%rsi)
- SAVE_REST
- movq $-1,ORIG_RAX(%rsp)
- xorq %rsi,%rsi # oldset
- movq %rsp,%rdi # &pt_regs
- call do_notify_resume
- RESTORE_REST
- XEN_BLOCK_EVENTS(%rsi)
- movl $_TIF_NEED_RESCHED,%edi
- GET_THREAD_INFO(%rcx)
- jmp retint_check
-
-#ifdef CONFIG_PREEMPT
- /* Returning to kernel space. Check if we need preemption */
- /* rcx: threadinfo. interrupts off. */
- .p2align
-retint_kernel:
- cmpl $0,threadinfo_preempt_count(%rcx)
- jnz retint_restore_args
- bt $TIF_NEED_RESCHED,threadinfo_flags(%rcx)
- jnc retint_restore_args
- bt $9,EFLAGS-ARGOFFSET(%rsp) /* interrupts off? */
- jc retint_restore_args
- movl $PREEMPT_ACTIVE,threadinfo_preempt_count(%rcx)
-/* sti */
- XEN_UNBLOCK_EVENTS(%rsi)
- call schedule
- XEN_BLOCK_EVENTS(%rsi)
-/* cli */
- GET_THREAD_INFO(%rcx)
- movl $0,threadinfo_preempt_count(%rcx)
- jmp retint_kernel /* check again */
-#endif
- CFI_ENDPROC
-
-/*
- * APIC interrupts.
- */
- .macro apicinterrupt num,func
- pushq $\num-256
- interrupt \func
- jmp error_entry
- CFI_ENDPROC
- .endm
-
-#ifdef CONFIG_SMP
-ENTRY(reschedule_interrupt)
- apicinterrupt RESCHEDULE_VECTOR,smp_reschedule_interrupt
-
-ENTRY(invalidate_interrupt)
- apicinterrupt INVALIDATE_TLB_VECTOR,smp_invalidate_interrupt
-
-ENTRY(call_function_interrupt)
- apicinterrupt CALL_FUNCTION_VECTOR,smp_call_function_interrupt
-#endif
-
-#ifdef CONFIG_X86_LOCAL_APIC
-ENTRY(apic_timer_interrupt)
- apicinterrupt LOCAL_TIMER_VECTOR,smp_apic_timer_interrupt
-
-ENTRY(error_interrupt)
- apicinterrupt ERROR_APIC_VECTOR,smp_error_interrupt
-
-ENTRY(spurious_interrupt)
- apicinterrupt SPURIOUS_APIC_VECTOR,smp_spurious_interrupt
-#endif
-
-/*
- * Exception entry points.
- */
- .macro zeroentry sym
- movq (%rsp),%rcx
- movq 8(%rsp),%r11
- addq $0x10,%rsp /* skip rcx and r11 */
- pushq $0 /* push error code/oldrax */
- pushq %rax /* push real oldrax to the rdi slot */
- leaq \sym(%rip),%rax
- jmp error_entry
- .endm
-
- .macro errorentry sym
- movq (%rsp),%rcx
- movq 8(%rsp),%r11
- addq $0x10,%rsp /* rsp points to the error code */
- pushq %rax
- leaq \sym(%rip),%rax
- jmp error_entry
- .endm
-
- /* error code is on the stack already */
- /* handle NMI like exceptions that can happen everywhere */
- .macro paranoidentry sym
- movq (%rsp),%rcx
- movq 8(%rsp),%r11
- addq $0x10,%rsp /* skip rcx and r11 */
- SAVE_ALL
- cld
- movl $1,%ebx
- movl $MSR_GS_BASE,%ecx
- rdmsr
- testl %edx,%edx
- js 1f
-/* swapgs */
- xorl %ebx,%ebx
-1: movq %rsp,%rdi
- movq ORIG_RAX(%rsp),%rsi
- movq $-1,ORIG_RAX(%rsp)
- call \sym
- .endm
-
-/*
- * Exception entry point. This expects an error code/orig_rax on the stack
- * and the exception handler in %rax.
- */
-ENTRY(error_entry)
- CFI_STARTPROC simple
- CFI_DEF_CFA rsp,(SS-RDI)
- CFI_REL_OFFSET rsp,(RSP-RDI)
- CFI_REL_OFFSET rip,(RIP-RDI)
- /* rdi slot contains rax, oldrax contains error code */
- cld
- subq $14*8,%rsp
- CFI_ADJUST_CFA_OFFSET (14*8)
- movq %rsi,13*8(%rsp)
- CFI_REL_OFFSET rsi,RSI
- movq 14*8(%rsp),%rsi /* load rax from rdi slot */
- movq %rdx,12*8(%rsp)
- CFI_REL_OFFSET rdx,RDX
- movq %rcx,11*8(%rsp)
- CFI_REL_OFFSET rcx,RCX
- movq %rsi,10*8(%rsp) /* store rax */
- CFI_REL_OFFSET rax,RAX
- movq %r8, 9*8(%rsp)
- CFI_REL_OFFSET r8,R8
- movq %r9, 8*8(%rsp)
- CFI_REL_OFFSET r9,R9
- movq %r10,7*8(%rsp)
- CFI_REL_OFFSET r10,R10
- movq %r11,6*8(%rsp)
- CFI_REL_OFFSET r11,R11
- movq %rbx,5*8(%rsp)
- CFI_REL_OFFSET rbx,RBX
- movq %rbp,4*8(%rsp)
- CFI_REL_OFFSET rbp,RBP
- movq %r12,3*8(%rsp)
- CFI_REL_OFFSET r12,R12
- movq %r13,2*8(%rsp)
- CFI_REL_OFFSET r13,R13
- movq %r14,1*8(%rsp)
- CFI_REL_OFFSET r14,R14
- movq %r15,(%rsp)
- CFI_REL_OFFSET r15,R15
-#if 0
- cmpl $__KERNEL_CS,CS(%rsp)
- je error_kernelspace
-#endif
-error_call_handler:
- movq %rdi, RDI(%rsp)
- movq %rsp,%rdi
- movq ORIG_RAX(%rsp),%rsi # get error code
- movq $-1,ORIG_RAX(%rsp)
- call *%rax
-error_exit:
- RESTORE_REST
-/* cli */
- XEN_BLOCK_EVENTS(%rsi)
- GET_THREAD_INFO(%rcx)
- testb $3,CS-ARGOFFSET(%rsp)
- jz retint_kernel
- movl threadinfo_flags(%rcx),%edx
- movl $_TIF_WORK_MASK,%edi
- andl %edi,%edx
- jnz retint_careful
- jmp retint_restore_args
-
-error_kernelspace:
- /*
- * We need to re-write the logic here because we don't do iretq to
- * to return to user mode. It's still possible that we get trap/fault
- * in the kernel (when accessing buffers pointed to by system calls,
- * for example).
- *
- */
-#if 0
- incl %ebx
- /* There are two places in the kernel that can potentially fault with
- usergs. Handle them here. The exception handlers after
- iret run with kernel gs again, so don't set the user space flag.
- B stepping K8s sometimes report an truncated RIP for IRET
- exceptions returning to compat mode. Check for these here too. */
- leaq iret_label(%rip),%rbp
- cmpq %rbp,RIP(%rsp)
- je error_swapgs
- movl %ebp,%ebp /* zero extend */
- cmpq %rbp,RIP(%rsp)
- je error_swapgs
- cmpq $gs_change,RIP(%rsp)
- je error_swapgs
- jmp error_sti
-#endif
-
-ENTRY(hypervisor_callback)
- zeroentry do_hypervisor_callback
-
-/*
- * Copied from arch/xen/i386/kernel/entry.S
- */
-# A note on the "critical region" in our callback handler.
-# We want to avoid stacking callback handlers due to events occurring
-# during handling of the last event. To do this, we keep events disabled
-# until we've done all processing. HOWEVER, we must enable events before
-# popping the stack frame (can't be done atomically) and so it would still
-# be possible to get enough handler activations to overflow the stack.
-# Although unlikely, bugs of that kind are hard to track down, so we'd
-# like to avoid the possibility.
-# So, on entry to the handler we detect whether we interrupted an
-# existing activation in its critical region -- if so, we pop the current
-# activation and restart the handler using the previous one.
-ENTRY(do_hypervisor_callback) # do_hyperviosr_callback(struct *pt_regs)
-# Since we don't modify %rdi, evtchn_do_upall(struct *pt_regs) will
-# see the correct pointer to the pt_regs
- addq $8, %rsp # we don't return, adjust the stack frame
-11: movb $0, EVENT_MASK(%rsp)
- call evtchn_do_upcall
- jmp error_exit
-
- ALIGN
-restore_all_enable_events:
- XEN_UNBLOCK_EVENTS(%rsi) # %rsi is already set up...
-
-scrit: /**** START OF CRITICAL REGION ****/
- XEN_TEST_PENDING(%rsi)
- jnz 14f # process more events if necessary...
- XEN_PUT_VCPU_INFO(%rsi)
- RESTORE_ARGS 0,8,0
- testb $3,8(%rsp) # check CS
- jnz crit_user_mode
- orb $3,1*8(%rsp)
- iretq
-crit_user_mode:
- SWITCH_TO_USER 0
-
-14: XEN_LOCKED_BLOCK_EVENTS(%rsi)
- XEN_PUT_VCPU_INFO(%rsi)
- SAVE_REST
- movq %rsp,%rdi # set the argument again
- jmp 11b
-ecrit: /**** END OF CRITICAL REGION ****/
-# At this point, unlike on x86-32, we don't do the fixup to simplify the
-# code and the stack frame is more complex on x86-64.
-# When the kernel is interrupted in the critical section, the kernel
-# will do IRET in that case, and everything will be restored at that point,
-# i.e. it just resumes from the next instruction interrupted with the same
context.
-
-# Hypervisor uses this for application faults while it executes.
-ENTRY(failsafe_callback)
- addq $0x10,%rsp /* skip rcx and r11 */
-1: movl (%rsp),%ds
-2: movl 8(%rsp),%es
-3: movl 16(%rsp),%fs
-4: movl 24(%rsp),%gs
- addq $0x20,%rsp /* skip the above selectors */
- SAVE_ALL
- jmp error_exit
-.section .fixup,"ax"; \
-6: movq $0,(%rsp); \
- jmp 1b; \
-7: movq $0,8(%rsp); \
- jmp 2b; \
-8: movq $0,16(%rsp); \
- jmp 3b; \
-9: movq $0,24(%rsp); \
- jmp 4b; \
-.previous; \
-.section __ex_table,"a";\
- .align 16; \
- .quad 1b,6b; \
- .quad 2b,7b; \
- .quad 3b,8b; \
- .quad 4b,9b; \
-.previous
-
-#if 0
- .section __ex_table,"a"
- .align 8
- .quad gs_change,bad_gs
- .previous
- .section .fixup,"ax"
- /* running with kernelgs */
-bad_gs:
-/* swapgs */ /* switch back to user gs */
- xorl %eax,%eax
- movl %eax,%gs
- jmp 2b
- .previous
-#endif
-
-/*
- * Create a kernel thread.
- *
- * C extern interface:
- * extern long kernel_thread(int (*fn)(void *), void * arg, unsigned long
flags)
- *
- * asm input arguments:
- * rdi: fn, rsi: arg, rdx: flags
- */
-ENTRY(kernel_thread)
- CFI_STARTPROC
- FAKE_STACK_FRAME $child_rip
- SAVE_ALL
-
- # rdi: flags, rsi: usp, rdx: will be &pt_regs
- movq %rdx,%rdi
- orq kernel_thread_flags(%rip),%rdi
- movq $-1, %rsi
- movq %rsp, %rdx
-
- xorl %r8d,%r8d
- xorl %r9d,%r9d
-
- # clone now
- call do_fork
- movq %rax,RAX(%rsp)
- xorl %edi,%edi
-
- /*
- * It isn't worth to check for reschedule here,
- * so internally to the x86_64 port you can rely on kernel_thread()
- * not to reschedule the child before returning, this avoids the need
- * of hacks for example to fork off the per-CPU idle tasks.
- * [Hopefully no generic code relies on the reschedule -AK]
- */
- RESTORE_ALL
- UNFAKE_STACK_FRAME
- ret
- CFI_ENDPROC
-
-
-child_rip:
- /*
- * Here we are in the child and the registers are set as they were
- * at kernel_thread() invocation in the parent.
- */
- movq %rdi, %rax
- movq %rsi, %rdi
- call *%rax
- # exit
- xorq %rdi, %rdi
- call do_exit
-
-/*
- * execve(). This function needs to use IRET, not SYSRET, to set up all state
properly.
- *
- * C extern interface:
- * extern long execve(char *name, char **argv, char **envp)
- *
- * asm input arguments:
- * rdi: name, rsi: argv, rdx: envp
- *
- * We want to fallback into:
- * extern long sys_execve(char *name, char **argv,char **envp, struct
pt_regs regs)
- *
- * do_sys_execve asm fallback arguments:
- * rdi: name, rsi: argv, rdx: envp, fake frame on the stack
- */
-ENTRY(execve)
- CFI_STARTPROC
- FAKE_STACK_FRAME $0
- SAVE_ALL
- call sys_execve
- movq %rax, RAX(%rsp)
- RESTORE_REST
- testq %rax,%rax
- jne 1f
- jmp int_ret_from_sys_call
-1: RESTORE_ARGS
- UNFAKE_STACK_FRAME
- ret
- CFI_ENDPROC
-
-
- /*
- * Copy error_entry because of the different stack frame
- */
-ENTRY(page_fault)
- movq (%rsp),%rcx
- movq 8(%rsp),%r11
- addq $0x10,%rsp # now %rsp points to %cr2
- pushq %rax
- leaq do_page_fault(%rip),%rax
- cld
- subq $13*8,%rsp
- movq %rdx,12*8(%rsp) # save %rdx
- movq 13*8(%rsp),%rdx # load rax
- movq %rcx,11*8(%rsp)
- movq %rdx,10*8(%rsp) # store rax
- movq %rsi,13*8(%rsp) # now save %rsi
- movq 14*8(%rsp),%rdx # load %cr2, 3rd argument
- movq %r8, 9*8(%rsp)
- movq %r9, 8*8(%rsp)
- movq %r10,7*8(%rsp)
- movq %r11,6*8(%rsp)
- movq %rbx,5*8(%rsp)
- movq %rbp,4*8(%rsp)
- movq %r12,3*8(%rsp)
- movq %r13,2*8(%rsp)
- movq %r14,1*8(%rsp)
- movq %r15,(%rsp)
-#if 0
- cmpl $__KERNEL_CS,CS(%rsp)
- je error_kernelspace
-#endif
- /*
- * 1st and 2nd arguments are set by error_call_handler
- */
- jmp error_call_handler
-
-ENTRY(coprocessor_error)
- zeroentry do_coprocessor_error
-
-ENTRY(simd_coprocessor_error)
- zeroentry do_simd_coprocessor_error
-
-ENTRY(device_not_available)
- zeroentry math_state_restore
-
- /* runs on exception stack */
-ENTRY(debug)
- CFI_STARTPROC
- pushq $0
- CFI_ADJUST_CFA_OFFSET 8
- paranoidentry do_debug
- /* switch back to process stack to restore the state ptrace touched */
- movq %rax,%rsp
- jmp paranoid_exit
- CFI_ENDPROC
-
-#if 0
- /* runs on exception stack */
-ENTRY(nmi)
- CFI_STARTPROC
- pushq $-1
- CFI_ADJUST_CFA_OFFSET 8
- paranoidentry do_nmi
- /* ebx: no swapgs flag */
-#endif
-paranoid_exit:
- testl %ebx,%ebx /* swapgs needed? */
- jnz paranoid_restore
-paranoid_swapgs:
-/* cli
- swapgs */
-paranoid_restore:
- RESTORE_ALL 8
-/* iretq */
-paranoid_userspace:
-/* cli */
- GET_THREAD_INFO(%rcx)
- movl threadinfo_flags(%rcx),%edx
- testl $_TIF_NEED_RESCHED,%edx
- jnz paranoid_resched
- testl $(_TIF_SIGPENDING|_TIF_NOTIFY_RESUME|_TIF_SINGLESTEP),%edx
- jnz paranoid_signal
- jmp paranoid_swapgs
-paranoid_resched:
-/* sti */
- call schedule
- jmp paranoid_exit
-paranoid_signal:
-/* sti */
- xorl %esi,%esi /* oldset */
- movq %rsp,%rdi /* &pt_regs */
- call do_notify_resume
- jmp paranoid_exit
- CFI_ENDPROC
-
-ENTRY(int3)
- zeroentry do_int3
-
-ENTRY(overflow)
- zeroentry do_overflow
-
-ENTRY(bounds)
- zeroentry do_bounds
-
-ENTRY(invalid_op)
- zeroentry do_invalid_op
-
-ENTRY(coprocessor_segment_overrun)
- zeroentry do_coprocessor_segment_overrun
-
-ENTRY(reserved)
- zeroentry do_reserved
-
- /* runs on exception stack */
-ENTRY(double_fault)
- CFI_STARTPROC
- paranoidentry do_double_fault
- movq %rax,%rsp
- jmp paranoid_exit
- CFI_ENDPROC
-
-ENTRY(invalid_TSS)
- errorentry do_invalid_TSS
-
-ENTRY(segment_not_present)
- errorentry do_segment_not_present
-
- /* runs on exception stack */
-ENTRY(stack_segment)
- CFI_STARTPROC
- paranoidentry do_stack_segment
- movq %rax,%rsp
- jmp paranoid_exit
- CFI_ENDPROC
-
-ENTRY(general_protection)
- errorentry do_general_protection
-
-ENTRY(alignment_check)
- errorentry do_alignment_check
-
-ENTRY(divide_error)
- zeroentry do_divide_error
-
-ENTRY(spurious_interrupt_bug)
- zeroentry do_spurious_interrupt_bug
-
-#ifdef CONFIG_X86_MCE
- /* runs on exception stack */
-ENTRY(machine_check)
- CFI_STARTPROC
- pushq $0
- CFI_ADJUST_CFA_OFFSET 8
- paranoidentry do_machine_check
- jmp paranoid_exit
- CFI_ENDPROC
-#endif
-
-ENTRY(call_debug)
- zeroentry do_call_debug
-
-
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/head.S
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/head.S Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,207 +0,0 @@
-/*
- * linux/arch/x86_64/kernel/head.S -- start in 32bit and switch to 64bit
- *
- * Copyright (C) 2000 Andrea Arcangeli <andrea@xxxxxxx> SuSE
- * Copyright (C) 2000 Pavel Machek <pavel@xxxxxxx>
- * Copyright (C) 2000 Karsten Keil <kkeil@xxxxxxx>
- * Copyright (C) 2001,2002 Andi Kleen <ak@xxxxxxx>
- *
- * $Id: head.S,v 1.49 2002/03/19 17:39:25 ak Exp $
- *
- * Jun Nakajima <jun.nakajima@xxxxxxxxx>
- * Modified for Xen
- */
-
-
-#include <linux/linkage.h>
-
-.section __xen_guest
- .ascii
"GUEST_OS=linux,GUEST_VER=2.6,XEN_VER=3.0,VIRT_BASE=0xffffffff80000000"
- .ascii ",LOADER=generic"
-/* .ascii ",PT_MODE_WRITABLE" */
- .byte 0
-
-
-#include <linux/threads.h>
-#include <asm/desc.h>
-#include <asm/segment.h>
-#include <asm/page.h>
-#include <asm/msr.h>
-#include <asm/cache.h>
-/* #include <asm/thread_info.h> */
-
-
-/* we are not able to switch in one step to the final KERNEL ADRESS SPACE
- * because we need identity-mapped pages on setup so define __START_KERNEL to
- * 0x100000 for this stage
- *
- */
-
- .text
- .code64
-ENTRY(_start)
- cld
- movq init_rsp(%rip),%rsp
- /* Copy the necessary stuff from xen_start_info structure. */
- movq $xen_start_info_union,%rdi
- movq $64,%rcx /* sizeof (union xen_start_info_union) / sizeof
(long) */
- rep movsq
-
-#ifdef CONFIG_SMP
- ENTRY(startup_64_smp)
- cld
-#endif /* CONFIG_SMP */
-
- /* zero EFLAGS after setting rsp */
- pushq $0
- popfq
- movq initial_code(%rip),%rax
- jmp *%rax
-
- /* SMP bootup changes these two */
- .globl initial_code
-initial_code:
- .quad x86_64_start_kernel
- .globl init_rsp
-init_rsp:
- .quad init_thread_union+THREAD_SIZE-8
-
-ENTRY(early_idt_handler)
- xorl %eax,%eax
- movq 8(%rsp),%rsi # get rip
- movq (%rsp),%rdx
- leaq early_idt_msg(%rip),%rdi
-1: hlt # generate #GP
- jmp 1b
-
-early_idt_msg:
- .asciz "PANIC: early exception rip %lx error %lx cr2 %lx\n"
-
-#if 0
-ENTRY(lgdt_finish)
- movl $(__USER_DS),%eax # DS/ES contains default USER segment
- movw %ax,%ds
- movw %ax,%es
- movl $(__KERNEL_DS),%eax
- movw %ax,%ss # after changing gdt.
- popq %rax # get the retrun address
- pushq $(__KERNEL_CS)
- pushq %rax
- lretq
-#endif
-
-ENTRY(stext)
-ENTRY(_stext)
-
- /*
- * This default setting generates an ident mapping at address 0x100000
- * and a mapping for the kernel that precisely maps virtual address
- * 0xffffffff80000000 to physical address 0x000000. (always using
- * 2Mbyte large pages provided by PAE mode)
- */
-.org 0x1000
-ENTRY(init_level4_pgt)
- .fill 512,8,0
-
- /*
- * We update two pgd entries to make kernel and user pgd consistent
- * at pgd_populate(). It can be used for kernel modules. So we place
- * this page here for those cases to avoid memory corruption.
- * We also use this page to establish the initiali mapping for
- * vsyscall area.
- */
-.org 0x2000
-ENTRY(init_level4_user_pgt)
- .fill 512,8,0
-
- /*
- * This is used for vsyscall area mapping as we have a different
- * level4 page table for user.
- */
-.org 0x3000
-ENTRY(level3_user_pgt)
- .fill 512,8,0
-
-.org 0x4000
-ENTRY(cpu_gdt_table)
-/* The TLS descriptors are currently at a different place compared to i386.
- Hopefully nobody expects them at a fixed place (Wine?) */
- .quad 0x0000000000000000 /* NULL descriptor */
- .quad 0x008ffa000000ffff /* __KERNEL_COMPAT32_CS */
- .quad 0x00affa000000ffff /* __KERNEL_CS */
- .quad 0x00cff2000000ffff /* __KERNEL_DS */
-
- .quad 0x00cffa000000ffff /* __USER32_CS */
- .quad 0x00cff2000000ffff /* __USER_DS, __USER32_DS */
- .quad 0x00affa000000ffff /* __USER_CS */
- .quad 0x00cffa000000ffff /* __KERNEL32_CS */
- .quad 0,0 /* TSS */
- .quad 0 /* LDT */
- .quad 0,0,0 /* three TLS descriptors */
- .quad 0 /* unused now */
-
-gdt_end:
- /* asm/segment.h:GDT_ENTRIES must match this */
- /* This should be a multiple of the cache line size */
- /* GDTs of other CPUs: */
- .fill (GDT_SIZE * NR_CPUS) - (gdt_end - cpu_gdt_table)
-
-.org 0x5000
-ENTRY(empty_zero_page)
-
-.org 0x6000
-ENTRY(empty_bad_page)
-
-.org 0x7000
-ENTRY(empty_bad_pte_table)
-
-.org 0x8000
-ENTRY(empty_bad_pmd_table)
-
- .org 0x9000
-#ifdef CONFIG_ACPI_SLEEP
-ENTRY(wakeup_level4_pgt)
- .quad 0x0000000000102007 /* -> level3_ident_pgt */
- .fill 255,8,0
- .quad 0x000000000010a007
- .fill 254,8,0
- /* (2^48-(2*1024*1024*1024))/(2^39) = 511 */
- .quad 0x0000000000103007 /* -> level3_kernel_pgt */
-#endif
-
- .data
-
- .align 16
- .globl cpu_gdt_descr
-cpu_gdt_descr:
- .word gdt_end-cpu_gdt_table
-gdt:
- .quad cpu_gdt_table
-#ifdef CONFIG_SMP
- .rept NR_CPUS-1
- .word 0
- .quad 0
- .endr
-#endif
-
-ENTRY(gdt_table32)
- .quad 0x0000000000000000 /* This one is magic */
- .quad 0x0000000000000000 /* unused */
- .quad 0x00af9a000000ffff /* __KERNEL_CS */
-gdt32_end:
-
-/* We need valid kernel segments for data and code in long mode too
- * IRET will check the segment types kkeil 2000/10/28
- * Also sysret mandates a special GDT layout
- */
-
-#if 0
-.align L1_CACHE_BYTES
-#endif
- .align L1_CACHE_BYTES
-ENTRY(idt_table)
- .rept 256
- .quad 0
- .quad 0
- .endr
-
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/head64.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/head64.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,132 +0,0 @@
-/*
- * linux/arch/x86_64/kernel/head64.c -- prepare to run common code
- *
- * Copyright (C) 2000 Andrea Arcangeli <andrea@xxxxxxx> SuSE
- *
- * $Id: head64.c,v 1.22 2001/07/06 14:28:20 ak Exp $
- *
- * Jun Nakajima <jun.nakajima@xxxxxxxxx>
- * Modified for Xen.
- */
-
-#include <linux/init.h>
-#include <linux/linkage.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/percpu.h>
-
-#include <asm/processor.h>
-#include <asm/proto.h>
-#include <asm/smp.h>
-#include <asm/bootsetup.h>
-#include <asm/setup.h>
-#include <asm/desc.h>
-
-unsigned long start_pfn;
-
-/* Don't add a printk in there. printk relies on the PDA which is not
initialized
- yet. */
-#if 0
-static void __init clear_bss(void)
-{
- extern char __bss_start[], __bss_end[];
- memset(__bss_start, 0,
- (unsigned long) __bss_end - (unsigned long) __bss_start);
-}
-#endif
-
-extern char x86_boot_params[2048];
-
-#define NEW_CL_POINTER 0x228 /* Relative to real mode data */
-#define OLD_CL_MAGIC_ADDR 0x90020
-#define OLD_CL_MAGIC 0xA33F
-#define OLD_CL_BASE_ADDR 0x90000
-#define OLD_CL_OFFSET 0x90022
-
-extern char saved_command_line[];
-
-#if 0
-static void __init copy_bootdata(char *real_mode_data)
-{
- int new_data;
- char * command_line;
-
- memcpy(x86_boot_params, real_mode_data, 2048);
- new_data = *(int *) (x86_boot_params + NEW_CL_POINTER);
- if (!new_data) {
- if (OLD_CL_MAGIC != * (u16 *) OLD_CL_MAGIC_ADDR) {
- printk("so old bootloader that it does not support
commandline?!\n");
- return;
- }
- new_data = OLD_CL_BASE_ADDR + * (u16 *) OLD_CL_OFFSET;
- printk("old bootloader convention, maybe loadlin?\n");
- }
- command_line = (char *) ((u64)(new_data));
- memcpy(saved_command_line, command_line, COMMAND_LINE_SIZE);
- printk("Bootdata ok (command line is %s)\n", saved_command_line);
-}
-#endif
-
-static void __init setup_boot_cpu_data(void)
-{
- int dummy, eax;
-
- /* get vendor info */
- cpuid(0, &boot_cpu_data.cpuid_level,
- (int *)&boot_cpu_data.x86_vendor_id[0],
- (int *)&boot_cpu_data.x86_vendor_id[8],
- (int *)&boot_cpu_data.x86_vendor_id[4]);
-
- /* get cpu type */
- cpuid(1, &eax, &dummy, &dummy,
- (unsigned int *) &boot_cpu_data.x86_capability);
- boot_cpu_data.x86 = (eax >> 8) & 0xf;
- boot_cpu_data.x86_model = (eax >> 4) & 0xf;
- boot_cpu_data.x86_mask = eax & 0xf;
-}
-
-extern char _end[];
-
-void __init x86_64_start_kernel(char * real_mode_data)
-{
- int i;
-
- phys_to_machine_mapping = (u32 *)xen_start_info.mfn_list;
- start_pfn = (__pa(xen_start_info.pt_base) >> PAGE_SHIFT) +
xen_start_info.nr_pt_frames;
-
- for (i = 0; i < 256; i++)
- set_intr_gate(i, early_idt_handler);
-#if 0
- asm volatile("lidt %0" :: "m" (idt_descr));
-#endif
- pda_init(0);
- /* copy_bootdata(real_mode_data); */
-#ifdef CONFIG_SMP
- cpu_set(0, cpu_online_map);
-#endif
- /* default console: */
- if (!strstr(saved_command_line, "console="))
- strcat(saved_command_line, " console=tty0");
-#if 0
- s = strstr(saved_command_line, "earlyprintk=");
- if (s != NULL)
- setup_early_printk(s);
-#endif
-
-#ifdef CONFIG_DISCONTIGMEM
- s = strstr(saved_command_line, "numa=");
- if (s != NULL)
- numa_setup(s+5);
-#endif
-#ifdef CONFIG_X86_IO_APIC
- if (strstr(saved_command_line, "disableapic"))
- disable_apic = 1;
-#endif
- /* You need early console to see that */
- if (__pa_symbol(&_end) >= KERNEL_TEXT_SIZE)
- panic("Kernel too big for kernel mapping\n");
-
- setup_boot_cpu_data();
- start_kernel();
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/init_task.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/init_task.c Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,49 +0,0 @@
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <linux/init_task.h>
-#include <linux/fs.h>
-#include <linux/mqueue.h>
-
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-#include <asm/desc.h>
-
-static struct fs_struct init_fs = INIT_FS;
-static struct files_struct init_files = INIT_FILES;
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-struct mm_struct init_mm = INIT_MM(init_mm);
-
-EXPORT_SYMBOL(init_mm);
-
-/*
- * Initial task structure.
- *
- * We need to make sure that this is 8192-byte aligned due to the
- * way process stacks are handled. This is done by having a special
- * "init_task" linker map entry..
- */
-union thread_union init_thread_union
- __attribute__((__section__(".data.init_task"))) =
- { INIT_THREAD_INFO(init_task) };
-
-/*
- * Initial task structure.
- *
- * All other task structs will be allocated on slabs in fork.c
- */
-struct task_struct init_task = INIT_TASK(init_task);
-
-EXPORT_SYMBOL(init_task);
-/*
- * per-CPU TSS segments. Threads are completely 'soft' on Linux,
- * no more per-task TSS's. The TSS size is kept cacheline-aligned
- * so they are allowed to end up in the .data.cacheline_aligned
- * section. Since TSS's are completely CPU-local, we want them
- * on exact cacheline boundaries, to eliminate cacheline ping-pong.
- */
-DEFINE_PER_CPU(struct tss_struct, init_tss) ____cacheline_maxaligned_in_smp;
-
-#define ALIGN_TO_4K __attribute__((section(".data.init_task")))
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/io_apic.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/io_apic.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,2051 +0,0 @@
-/*
- * Intel IO-APIC support for multi-Pentium hosts.
- *
- * Copyright (C) 1997, 1998, 1999, 2000 Ingo Molnar, Hajnalka Szabo
- *
- * Many thanks to Stig Venaas for trying out countless experimental
- * patches and reporting/debugging problems patiently!
- *
- * (c) 1999, Multiple IO-APIC support, developed by
- * Ken-ichi Yaku <yaku@xxxxxxxxxxxxxxxxxxxx> and
- * Hidemi Kishimoto <kisimoto@xxxxxxxxxxxxxxxxxxxx>,
- * further tested and cleaned up by Zach Brown <zab@xxxxxxxxxx>
- * and Ingo Molnar <mingo@xxxxxxxxxx>
- *
- * Fixes
- * Maciej W. Rozycki : Bits for genuine 82489DX APICs;
- * thanks to Eric Gilmore
- * and Rolf G. Tews
- * for testing these extensively
- * Paul Diefenbaugh : Added full ACPI support
- */
-
-#include <linux/mm.h>
-#include <linux/irq.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/sched.h>
-#include <linux/config.h>
-#include <linux/smp_lock.h>
-#include <linux/mc146818rtc.h>
-#include <linux/acpi.h>
-#include <linux/sysdev.h>
-
-#include <asm/io.h>
-#include <asm/smp.h>
-#include <asm/desc.h>
-#include <asm/proto.h>
-#include <asm/mach_apic.h>
-
-#define __apicdebuginit __init
-
-int sis_apic_bug; /* not actually supported, dummy for compile */
-
-static DEFINE_SPINLOCK(ioapic_lock);
-
-/*
- * # of IRQ routing registers
- */
-int nr_ioapic_registers[MAX_IO_APICS];
-
-/*
- * Rough estimation of how many shared IRQs there are, can
- * be changed anytime.
- */
-#define MAX_PLUS_SHARED_IRQS NR_IRQS
-#define PIN_MAP_SIZE (MAX_PLUS_SHARED_IRQS + NR_IRQS)
-
-/*
- * This is performance-critical, we want to do it O(1)
- *
- * the indexing order of this array favors 1:1 mappings
- * between pins and IRQs.
- */
-
-static struct irq_pin_list {
- short apic, pin, next;
-} irq_2_pin[PIN_MAP_SIZE];
-
-int vector_irq[NR_VECTORS] = { [0 ... NR_VECTORS - 1] = -1};
-#ifdef CONFIG_PCI_MSI
-#define vector_to_irq(vector) \
- (platform_legacy_irq(vector) ? vector : vector_irq[vector])
-#else
-#define vector_to_irq(vector) (vector)
-#endif
-
-#ifdef CONFIG_XEN
-
-#include <asm-xen/xen-public/xen.h>
-#include <asm-xen/xen-public/physdev.h>
-
-/* Fake i8259 */
-#define make_8259A_irq(_irq) (io_apic_irqs &= ~(1UL<<(_irq)))
-#define disable_8259A_irq(_irq) ((void)0)
-#define i8259A_irq_pending(_irq) (0)
-
-unsigned long io_apic_irqs;
-
-static inline unsigned int xen_io_apic_read(unsigned int apic, unsigned int
reg)
-{
- physdev_op_t op;
- int ret;
-
- op.cmd = PHYSDEVOP_APIC_READ;
- op.u.apic_op.apic = mp_ioapics[apic].mpc_apicid;
- op.u.apic_op.offset = reg;
- ret = HYPERVISOR_physdev_op(&op);
- if (ret)
- return ret;
- return op.u.apic_op.value;
-}
-
-static inline void xen_io_apic_write(unsigned int apic, unsigned int reg,
unsigned int value)
-{
- physdev_op_t op;
-
- op.cmd = PHYSDEVOP_APIC_WRITE;
- op.u.apic_op.apic = mp_ioapics[apic].mpc_apicid;
- op.u.apic_op.offset = reg;
- op.u.apic_op.value = value;
- HYPERVISOR_physdev_op(&op);
-}
-
-#define io_apic_read(a,r) xen_io_apic_read(a,r)
-#define io_apic_write(a,r,v) xen_io_apic_write(a,r,v)
-
-#define clear_IO_APIC() ((void)0)
-
-#endif /* !CONFIG_XEN */
-
-/*
- * The common case is 1:1 IRQ<->pin mappings. Sometimes there are
- * shared ISA-space IRQs, so we have to support them. We are super
- * fast in the common case, and fast for shared ISA-space IRQs.
- */
-static void add_pin_to_irq(unsigned int irq, int apic, int pin)
-{
- static int first_free_entry = NR_IRQS;
- struct irq_pin_list *entry = irq_2_pin + irq;
-
- while (entry->next)
- entry = irq_2_pin + entry->next;
-
- if (entry->pin != -1) {
- entry->next = first_free_entry;
- entry = irq_2_pin + entry->next;
- if (++first_free_entry >= PIN_MAP_SIZE)
- panic("io_apic.c: whoops");
- }
- entry->apic = apic;
- entry->pin = pin;
-}
-
-#ifndef CONFIG_XEN
-#define __DO_ACTION(R, ACTION, FINAL) \
- \
-{ \
- int pin; \
- struct irq_pin_list *entry = irq_2_pin + irq; \
- \
- for (;;) { \
- unsigned int reg; \
- pin = entry->pin; \
- if (pin == -1) \
- break; \
- reg = io_apic_read(entry->apic, 0x10 + R + pin*2); \
- reg ACTION; \
- io_apic_modify(entry->apic, reg); \
- if (!entry->next) \
- break; \
- entry = irq_2_pin + entry->next; \
- } \
- FINAL; \
-}
-
-#define DO_ACTION(name,R,ACTION, FINAL)
\
- \
- static void name##_IO_APIC_irq (unsigned int irq) \
- __DO_ACTION(R, ACTION, FINAL)
-
-DO_ACTION( __mask, 0, |= 0x00010000, io_apic_sync(entry->apic) )
- /* mask = 1 */
-DO_ACTION( __unmask, 0, &= 0xfffeffff, )
- /* mask = 0 */
-
-static void mask_IO_APIC_irq (unsigned int irq)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&ioapic_lock, flags);
- __mask_IO_APIC_irq(irq);
- spin_unlock_irqrestore(&ioapic_lock, flags);
-}
-
-static void unmask_IO_APIC_irq (unsigned int irq)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&ioapic_lock, flags);
- __unmask_IO_APIC_irq(irq);
- spin_unlock_irqrestore(&ioapic_lock, flags);
-}
-
-void clear_IO_APIC_pin(unsigned int apic, unsigned int pin)
-{
- struct IO_APIC_route_entry entry;
- unsigned long flags;
-
- /* Check delivery_mode to be sure we're not clearing an SMI pin */
- spin_lock_irqsave(&ioapic_lock, flags);
- *(((int*)&entry) + 0) = io_apic_read(apic, 0x10 + 2 * pin);
- *(((int*)&entry) + 1) = io_apic_read(apic, 0x11 + 2 * pin);
- spin_unlock_irqrestore(&ioapic_lock, flags);
- if (entry.delivery_mode == dest_SMI)
- return;
- /*
- * Disable it in the IO-APIC irq-routing table:
- */
- memset(&entry, 0, sizeof(entry));
- entry.mask = 1;
- spin_lock_irqsave(&ioapic_lock, flags);
- io_apic_write(apic, 0x10 + 2 * pin, *(((int *)&entry) + 0));
- io_apic_write(apic, 0x11 + 2 * pin, *(((int *)&entry) + 1));
- spin_unlock_irqrestore(&ioapic_lock, flags);
-}
-
-static void clear_IO_APIC (void)
-{
- int apic, pin;
-
- for (apic = 0; apic < nr_ioapics; apic++)
- for (pin = 0; pin < nr_ioapic_registers[apic]; pin++)
- clear_IO_APIC_pin(apic, pin);
-}
-
-#endif /* !CONFIG_XEN */
-
-/*
- * support for broken MP BIOSs, enables hand-redirection of PIRQ0-7 to
- * specific CPU-side IRQs.
- */
-
-#define MAX_PIRQS 8
-int pirq_entries [MAX_PIRQS];
-int pirqs_enabled;
-int skip_ioapic_setup;
-int ioapic_force;
-
-/* dummy parsing: see setup.c */
-
-static int __init disable_ioapic_setup(char *str)
-{
- skip_ioapic_setup = 1;
- return 1;
-}
-
-static int __init enable_ioapic_setup(char *str)
-{
- ioapic_force = 1;
- skip_ioapic_setup = 0;
- return 1;
-}
-
-
-__setup("noapic", disable_ioapic_setup);
-__setup("apic", enable_ioapic_setup);
-
-
-#include <asm/pci-direct.h>
-#include <linux/pci_ids.h>
-#include <linux/pci.h>
-
-/* Temporary Hack. Nvidia and VIA boards currently only work with IO-APIC
- off. Check for an Nvidia or VIA PCI bridge and turn it off.
- Use pci direct infrastructure because this runs before the PCI subsystem.
-
- Can be overwritten with "apic"
-
- And another hack to disable the IOMMU on VIA chipsets.
-
- Kludge-O-Rama. */
-void __init check_ioapic(void)
-{
- int num,slot,func;
- if (ioapic_force)
- return;
-
- /* Poor man's PCI discovery */
- for (num = 0; num < 32; num++) {
- for (slot = 0; slot < 32; slot++) {
- for (func = 0; func < 8; func++) {
- u32 class;
- u32 vendor;
- u8 type;
- class = read_pci_config(num,slot,func,
- PCI_CLASS_REVISION);
- if (class == 0xffffffff)
- break;
-
- if ((class >> 16) != PCI_CLASS_BRIDGE_PCI)
- continue;
-
- vendor = read_pci_config(num, slot, func,
- PCI_VENDOR_ID);
- vendor &= 0xffff;
- switch (vendor) {
- case PCI_VENDOR_ID_VIA:
-#ifdef CONFIG_GART_IOMMU
- if ((end_pfn >=
(0xffffffff>>PAGE_SHIFT) ||
- force_iommu) &&
- !iommu_aperture_allowed) {
- printk(KERN_INFO
- "Looks like a VIA chipset. Disabling IOMMU. Overwrite with
\"iommu=allowed\"\n");
- iommu_aperture_disabled = 1;
- }
-#endif
- return;
- case PCI_VENDOR_ID_NVIDIA:
-#ifdef CONFIG_ACPI
- /* All timer overrides on Nvidia
- seem to be wrong. Skip them. */
- acpi_skip_timer_override = 1;
- printk(KERN_INFO
- "Nvidia board detected. Ignoring ACPI timer override.\n");
-#endif
- /* RED-PEN skip them on mptables too? */
- return;
- }
-
- /* No multi-function device? */
- type = read_pci_config_byte(num,slot,func,
- PCI_HEADER_TYPE);
- if (!(type & 0x80))
- break;
- }
- }
- }
-}
-
-static int __init ioapic_pirq_setup(char *str)
-{
- int i, max;
- int ints[MAX_PIRQS+1];
-
- get_options(str, ARRAY_SIZE(ints), ints);
-
- for (i = 0; i < MAX_PIRQS; i++)
- pirq_entries[i] = -1;
-
- pirqs_enabled = 1;
- apic_printk(APIC_VERBOSE, "PIRQ redirection, working around broken
MP-BIOS.\n");
- max = MAX_PIRQS;
- if (ints[0] < MAX_PIRQS)
- max = ints[0];
-
- for (i = 0; i < max; i++) {
- apic_printk(APIC_VERBOSE, "... PIRQ%d -> IRQ %d\n", i,
ints[i+1]);
- /*
- * PIRQs are mapped upside down, usually.
- */
- pirq_entries[MAX_PIRQS-i-1] = ints[i+1];
- }
- return 1;
-}
-
-__setup("pirq=", ioapic_pirq_setup);
-
-/*
- * Find the IRQ entry number of a certain pin.
- */
-static int find_irq_entry(int apic, int pin, int type)
-{
- int i;
-
- for (i = 0; i < mp_irq_entries; i++)
- if (mp_irqs[i].mpc_irqtype == type &&
- (mp_irqs[i].mpc_dstapic == mp_ioapics[apic].mpc_apicid ||
- mp_irqs[i].mpc_dstapic == MP_APIC_ALL) &&
- mp_irqs[i].mpc_dstirq == pin)
- return i;
-
- return -1;
-}
-
-#ifndef CONFIG_XEN
-/*
- * Find the pin to which IRQ[irq] (ISA) is connected
- */
-static int __init find_isa_irq_pin(int irq, int type)
-{
- int i;
-
- for (i = 0; i < mp_irq_entries; i++) {
- int lbus = mp_irqs[i].mpc_srcbus;
-
- if ((mp_bus_id_to_type[lbus] == MP_BUS_ISA ||
- mp_bus_id_to_type[lbus] == MP_BUS_EISA ||
- mp_bus_id_to_type[lbus] == MP_BUS_MCA) &&
- (mp_irqs[i].mpc_irqtype == type) &&
- (mp_irqs[i].mpc_srcbusirq == irq))
-
- return mp_irqs[i].mpc_dstirq;
- }
- return -1;
-}
-#endif
-
-/*
- * Find a specific PCI IRQ entry.
- * Not an __init, possibly needed by modules
- */
-static int pin_2_irq(int idx, int apic, int pin);
-
-int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin)
-{
- int apic, i, best_guess = -1;
-
- apic_printk(APIC_DEBUG, "querying PCI -> IRQ mapping bus:%d, slot:%d,
pin:%d.\n",
- bus, slot, pin);
- if (mp_bus_id_to_pci_bus[bus] == -1) {
- apic_printk(APIC_VERBOSE, "PCI BIOS passed nonexistent PCI bus
%d!\n", bus);
- return -1;
- }
- for (i = 0; i < mp_irq_entries; i++) {
- int lbus = mp_irqs[i].mpc_srcbus;
-
- for (apic = 0; apic < nr_ioapics; apic++)
- if (mp_ioapics[apic].mpc_apicid ==
mp_irqs[i].mpc_dstapic ||
- mp_irqs[i].mpc_dstapic == MP_APIC_ALL)
- break;
-
- if ((mp_bus_id_to_type[lbus] == MP_BUS_PCI) &&
- !mp_irqs[i].mpc_irqtype &&
- (bus == lbus) &&
- (slot == ((mp_irqs[i].mpc_srcbusirq >> 2) & 0x1f))) {
- int irq = pin_2_irq(i,apic,mp_irqs[i].mpc_dstirq);
-
- if (!(apic || IO_APIC_IRQ(irq)))
- continue;
-
- if (pin == (mp_irqs[i].mpc_srcbusirq & 3))
- return irq;
- /*
- * Use the first all-but-pin matching entry as a
- * best-guess fuzzy result for broken mptables.
- */
- if (best_guess < 0)
- best_guess = irq;
- }
- }
- return best_guess;
-}
-
-/*
- * EISA Edge/Level control register, ELCR
- */
-static int EISA_ELCR(unsigned int irq)
-{
- if (irq < 16) {
- unsigned int port = 0x4d0 + (irq >> 3);
- return (inb(port) >> (irq & 7)) & 1;
- }
- apic_printk(APIC_VERBOSE, "Broken MPtable reports ISA irq %d\n", irq);
- return 0;
-}
-
-/* EISA interrupts are always polarity zero and can be edge or level
- * trigger depending on the ELCR value. If an interrupt is listed as
- * EISA conforming in the MP table, that means its trigger type must
- * be read in from the ELCR */
-
-#define default_EISA_trigger(idx) (EISA_ELCR(mp_irqs[idx].mpc_srcbusirq))
-#define default_EISA_polarity(idx) (0)
-
-/* ISA interrupts are always polarity zero edge triggered,
- * when listed as conforming in the MP table. */
-
-#define default_ISA_trigger(idx) (0)
-#define default_ISA_polarity(idx) (0)
-
-/* PCI interrupts are always polarity one level triggered,
- * when listed as conforming in the MP table. */
-
-#define default_PCI_trigger(idx) (1)
-#define default_PCI_polarity(idx) (1)
-
-/* MCA interrupts are always polarity zero level triggered,
- * when listed as conforming in the MP table. */
-
-#define default_MCA_trigger(idx) (1)
-#define default_MCA_polarity(idx) (0)
-
-static int __init MPBIOS_polarity(int idx)
-{
- int bus = mp_irqs[idx].mpc_srcbus;
- int polarity;
-
- /*
- * Determine IRQ line polarity (high active or low active):
- */
- switch (mp_irqs[idx].mpc_irqflag & 3)
- {
- case 0: /* conforms, ie. bus-type dependent polarity */
- {
- switch (mp_bus_id_to_type[bus])
- {
- case MP_BUS_ISA: /* ISA pin */
- {
- polarity = default_ISA_polarity(idx);
- break;
- }
- case MP_BUS_EISA: /* EISA pin */
- {
- polarity = default_EISA_polarity(idx);
- break;
- }
- case MP_BUS_PCI: /* PCI pin */
- {
- polarity = default_PCI_polarity(idx);
- break;
- }
- case MP_BUS_MCA: /* MCA pin */
- {
- polarity = default_MCA_polarity(idx);
- break;
- }
- default:
- {
- printk(KERN_WARNING "broken BIOS!!\n");
- polarity = 1;
- break;
- }
- }
- break;
- }
- case 1: /* high active */
- {
- polarity = 0;
- break;
- }
- case 2: /* reserved */
- {
- printk(KERN_WARNING "broken BIOS!!\n");
- polarity = 1;
- break;
- }
- case 3: /* low active */
- {
- polarity = 1;
- break;
- }
- default: /* invalid */
- {
- printk(KERN_WARNING "broken BIOS!!\n");
- polarity = 1;
- break;
- }
- }
- return polarity;
-}
-
-static int MPBIOS_trigger(int idx)
-{
- int bus = mp_irqs[idx].mpc_srcbus;
- int trigger;
-
- /*
- * Determine IRQ trigger mode (edge or level sensitive):
- */
- switch ((mp_irqs[idx].mpc_irqflag>>2) & 3)
- {
- case 0: /* conforms, ie. bus-type dependent */
- {
- switch (mp_bus_id_to_type[bus])
- {
- case MP_BUS_ISA: /* ISA pin */
- {
- trigger = default_ISA_trigger(idx);
- break;
- }
- case MP_BUS_EISA: /* EISA pin */
- {
- trigger = default_EISA_trigger(idx);
- break;
- }
- case MP_BUS_PCI: /* PCI pin */
- {
- trigger = default_PCI_trigger(idx);
- break;
- }
- case MP_BUS_MCA: /* MCA pin */
- {
- trigger = default_MCA_trigger(idx);
- break;
- }
- default:
- {
- printk(KERN_WARNING "broken BIOS!!\n");
- trigger = 1;
- break;
- }
- }
- break;
- }
- case 1: /* edge */
- {
- trigger = 0;
- break;
- }
- case 2: /* reserved */
- {
- printk(KERN_WARNING "broken BIOS!!\n");
- trigger = 1;
- break;
- }
- case 3: /* level */
- {
- trigger = 1;
- break;
- }
- default: /* invalid */
- {
- printk(KERN_WARNING "broken BIOS!!\n");
- trigger = 0;
- break;
- }
- }
- return trigger;
-}
-
-static inline int irq_polarity(int idx)
-{
- return MPBIOS_polarity(idx);
-}
-
-static inline int irq_trigger(int idx)
-{
- return MPBIOS_trigger(idx);
-}
-
-static int pin_2_irq(int idx, int apic, int pin)
-{
- int irq, i;
- int bus = mp_irqs[idx].mpc_srcbus;
-
- /*
- * Debugging check, we are in big trouble if this message pops up!
- */
- if (mp_irqs[idx].mpc_dstirq != pin)
- printk(KERN_ERR "broken BIOS or MPTABLE parser, ayiee!!\n");
-
- switch (mp_bus_id_to_type[bus])
- {
- case MP_BUS_ISA: /* ISA pin */
- case MP_BUS_EISA:
- case MP_BUS_MCA:
- {
- irq = mp_irqs[idx].mpc_srcbusirq;
- break;
- }
- case MP_BUS_PCI: /* PCI pin */
- {
- /*
- * PCI IRQs are mapped in order
- */
- i = irq = 0;
- while (i < apic)
- irq += nr_ioapic_registers[i++];
- irq += pin;
- break;
- }
- default:
- {
- printk(KERN_ERR "unknown bus type %d.\n",bus);
- irq = 0;
- break;
- }
- }
-
- /*
- * PCI IRQ command line redirection. Yes, limits are hardcoded.
- */
- if ((pin >= 16) && (pin <= 23)) {
- if (pirq_entries[pin-16] != -1) {
- if (!pirq_entries[pin-16]) {
- apic_printk(APIC_VERBOSE, "disabling PIRQ%d\n",
pin-16);
- } else {
- irq = pirq_entries[pin-16];
- apic_printk(APIC_VERBOSE, "using PIRQ%d -> IRQ
%d\n",
- pin-16, irq);
- }
- }
- }
- return irq;
-}
-
-static inline int IO_APIC_irq_trigger(int irq)
-{
- int apic, idx, pin;
-
- for (apic = 0; apic < nr_ioapics; apic++) {
- for (pin = 0; pin < nr_ioapic_registers[apic]; pin++) {
- idx = find_irq_entry(apic,pin,mp_INT);
- if ((idx != -1) && (irq == pin_2_irq(idx,apic,pin)))
- return irq_trigger(idx);
- }
- }
- /*
- * nonexistent IRQs are edge default
- */
- return 0;
-}
-
-/* irq_vectors is indexed by the sum of all RTEs in all I/O APICs. */
-u8 irq_vector[NR_IRQ_VECTORS];
-
-int assign_irq_vector(int irq)
-{
- static int current_vector = FIRST_DEVICE_VECTOR;
- physdev_op_t op;
-
- BUG_ON(irq >= NR_IRQ_VECTORS);
- if (irq != AUTO_ASSIGN && IO_APIC_VECTOR(irq) > 0)
- return IO_APIC_VECTOR(irq);
-
- op.cmd = PHYSDEVOP_ASSIGN_VECTOR;
- op.u.irq_op.irq = irq;
- if (HYPERVISOR_physdev_op(&op))
- return -ENOSPC;
- current_vector = op.u.irq_op.vector;
-
- vector_irq[current_vector] = irq;
- if (irq != AUTO_ASSIGN)
- IO_APIC_VECTOR(irq) = current_vector;
-
- return current_vector;
-}
-
-extern void (*interrupt[NR_IRQS])(void);
-#ifndef CONFIG_XEN
-static struct hw_interrupt_type ioapic_level_type;
-static struct hw_interrupt_type ioapic_edge_type;
-
-#define IOAPIC_AUTO -1
-#define IOAPIC_EDGE 0
-#define IOAPIC_LEVEL 1
-
-static inline void ioapic_register_intr(int irq, int vector, unsigned long
trigger)
-{
- if (use_pci_vector() && !platform_legacy_irq(irq)) {
- if ((trigger == IOAPIC_AUTO && IO_APIC_irq_trigger(irq)) ||
- trigger == IOAPIC_LEVEL)
- irq_desc[vector].handler = &ioapic_level_type;
- else
- irq_desc[vector].handler = &ioapic_edge_type;
- set_intr_gate(vector, interrupt[vector]);
- } else {
- if ((trigger == IOAPIC_AUTO && IO_APIC_irq_trigger(irq)) ||
- trigger == IOAPIC_LEVEL)
- irq_desc[irq].handler = &ioapic_level_type;
- else
- irq_desc[irq].handler = &ioapic_edge_type;
- set_intr_gate(vector, interrupt[irq]);
- }
-}
-#else
-#define ioapic_register_intr(_irq,_vector,_trigger) ((void)0)
-#endif /* !CONFIG_XEN */
-
-void __init setup_IO_APIC_irqs(void)
-{
- struct IO_APIC_route_entry entry;
- int apic, pin, idx, irq, first_notcon = 1, vector;
- unsigned long flags;
-
- apic_printk(APIC_VERBOSE, KERN_DEBUG "init IO_APIC IRQs\n");
-
- for (apic = 0; apic < nr_ioapics; apic++) {
- for (pin = 0; pin < nr_ioapic_registers[apic]; pin++) {
-
- /*
- * add it to the IO-APIC irq-routing table:
- */
- memset(&entry,0,sizeof(entry));
-
- entry.delivery_mode = INT_DELIVERY_MODE;
- entry.dest_mode = INT_DEST_MODE;
- entry.mask = 0; /* enable IRQ */
- entry.dest.logical.logical_dest =
cpu_mask_to_apicid(TARGET_CPUS);
-
- idx = find_irq_entry(apic,pin,mp_INT);
- if (idx == -1) {
- if (first_notcon) {
- apic_printk(APIC_VERBOSE, KERN_DEBUG " IO-APIC
(apicid-pin) %d-%d", mp_ioapics[apic].mpc_apicid, pin);
- first_notcon = 0;
- } else
- apic_printk(APIC_VERBOSE, ", %d-%d",
mp_ioapics[apic].mpc_apicid, pin);
- continue;
- }
-
- entry.trigger = irq_trigger(idx);
- entry.polarity = irq_polarity(idx);
-
- if (irq_trigger(idx)) {
- entry.trigger = 1;
- entry.mask = 1;
- entry.dest.logical.logical_dest =
cpu_mask_to_apicid(TARGET_CPUS);
- }
-
- irq = pin_2_irq(idx, apic, pin);
- add_pin_to_irq(irq, apic, pin);
-
- if (/* !apic && */ !IO_APIC_IRQ(irq))
- continue;
-
- if (IO_APIC_IRQ(irq)) {
- vector = assign_irq_vector(irq);
- entry.vector = vector;
-
- ioapic_register_intr(irq, vector, IOAPIC_AUTO);
- if (!apic && (irq < 16))
- disable_8259A_irq(irq);
- }
- spin_lock_irqsave(&ioapic_lock, flags);
- io_apic_write(apic, 0x11+2*pin, *(((int *)&entry)+1));
- io_apic_write(apic, 0x10+2*pin, *(((int *)&entry)+0));
- spin_unlock_irqrestore(&ioapic_lock, flags);
- }
- }
-
- if (!first_notcon)
- apic_printk(APIC_VERBOSE," not connected.\n");
-}
-
-#ifndef CONFIG_XEN
-/*
- * Set up the 8259A-master output pin as broadcast to all
- * CPUs.
- */
-void __init setup_ExtINT_IRQ0_pin(unsigned int pin, int vector)
-{
- struct IO_APIC_route_entry entry;
- unsigned long flags;
-
- memset(&entry,0,sizeof(entry));
-
- disable_8259A_irq(0);
-
- /* mask LVT0 */
- apic_write_around(APIC_LVT0, APIC_LVT_MASKED | APIC_DM_EXTINT);
-
- /*
- * We use logical delivery to get the timer IRQ
- * to the first CPU.
- */
- entry.dest_mode = INT_DEST_MODE;
- entry.mask = 0; /* unmask IRQ now */
- entry.dest.logical.logical_dest = cpu_mask_to_apicid(TARGET_CPUS);
- entry.delivery_mode = INT_DELIVERY_MODE;
- entry.polarity = 0;
- entry.trigger = 0;
- entry.vector = vector;
-
- /*
- * The timer IRQ doesn't have to know that behind the
- * scene we have a 8259A-master in AEOI mode ...
- */
- irq_desc[0].handler = &ioapic_edge_type;
-
- /*
- * Add it to the IO-APIC irq-routing table:
- */
- spin_lock_irqsave(&ioapic_lock, flags);
- io_apic_write(0, 0x11+2*pin, *(((int *)&entry)+1));
- io_apic_write(0, 0x10+2*pin, *(((int *)&entry)+0));
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- enable_8259A_irq(0);
-}
-
-void __init UNEXPECTED_IO_APIC(void)
-{
-}
-
-void __apicdebuginit print_IO_APIC(void)
-{
- int apic, i;
- union IO_APIC_reg_00 reg_00;
- union IO_APIC_reg_01 reg_01;
- union IO_APIC_reg_02 reg_02;
- unsigned long flags;
-
- if (apic_verbosity == APIC_QUIET)
- return;
-
- printk(KERN_DEBUG "number of MP IRQ sources: %d.\n", mp_irq_entries);
- for (i = 0; i < nr_ioapics; i++)
- printk(KERN_DEBUG "number of IO-APIC #%d registers: %d.\n",
- mp_ioapics[i].mpc_apicid, nr_ioapic_registers[i]);
-
- /*
- * We are a bit conservative about what we expect. We have to
- * know about every hardware change ASAP.
- */
- printk(KERN_INFO "testing the IO APIC.......................\n");
-
- for (apic = 0; apic < nr_ioapics; apic++) {
-
- spin_lock_irqsave(&ioapic_lock, flags);
- reg_00.raw = io_apic_read(apic, 0);
- reg_01.raw = io_apic_read(apic, 1);
- if (reg_01.bits.version >= 0x10)
- reg_02.raw = io_apic_read(apic, 2);
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- printk("\n");
- printk(KERN_DEBUG "IO APIC #%d......\n", mp_ioapics[apic].mpc_apicid);
- printk(KERN_DEBUG ".... register #00: %08X\n", reg_00.raw);
- printk(KERN_DEBUG "....... : physical APIC id: %02X\n",
reg_00.bits.ID);
- if (reg_00.bits.__reserved_1 || reg_00.bits.__reserved_2)
- UNEXPECTED_IO_APIC();
-
- printk(KERN_DEBUG ".... register #01: %08X\n", *(int *)®_01);
- printk(KERN_DEBUG "....... : max redirection entries: %04X\n",
reg_01.bits.entries);
- if ( (reg_01.bits.entries != 0x0f) && /* older (Neptune) boards */
- (reg_01.bits.entries != 0x17) && /* typical ISA+PCI boards */
- (reg_01.bits.entries != 0x1b) && /* Compaq Proliant boards */
- (reg_01.bits.entries != 0x1f) && /* dual Xeon boards */
- (reg_01.bits.entries != 0x22) && /* bigger Xeon boards */
- (reg_01.bits.entries != 0x2E) &&
- (reg_01.bits.entries != 0x3F) &&
- (reg_01.bits.entries != 0x03)
- )
- UNEXPECTED_IO_APIC();
-
- printk(KERN_DEBUG "....... : PRQ implemented: %X\n",
reg_01.bits.PRQ);
- printk(KERN_DEBUG "....... : IO APIC version: %04X\n",
reg_01.bits.version);
- if ( (reg_01.bits.version != 0x01) && /* 82489DX IO-APICs */
- (reg_01.bits.version != 0x02) && /* 82801BA IO-APICs (ICH2) */
- (reg_01.bits.version != 0x10) && /* oldest IO-APICs */
- (reg_01.bits.version != 0x11) && /* Pentium/Pro IO-APICs */
- (reg_01.bits.version != 0x13) && /* Xeon IO-APICs */
- (reg_01.bits.version != 0x20) /* Intel P64H (82806 AA) */
- )
- UNEXPECTED_IO_APIC();
- if (reg_01.bits.__reserved_1 || reg_01.bits.__reserved_2)
- UNEXPECTED_IO_APIC();
-
- if (reg_01.bits.version >= 0x10) {
- printk(KERN_DEBUG ".... register #02: %08X\n", reg_02.raw);
- printk(KERN_DEBUG "....... : arbitration: %02X\n",
reg_02.bits.arbitration);
- if (reg_02.bits.__reserved_1 || reg_02.bits.__reserved_2)
- UNEXPECTED_IO_APIC();
- }
-
- printk(KERN_DEBUG ".... IRQ redirection table:\n");
-
- printk(KERN_DEBUG " NR Log Phy Mask Trig IRR Pol"
- " Stat Dest Deli Vect: \n");
-
- for (i = 0; i <= reg_01.bits.entries; i++) {
- struct IO_APIC_route_entry entry;
-
- spin_lock_irqsave(&ioapic_lock, flags);
- *(((int *)&entry)+0) = io_apic_read(apic, 0x10+i*2);
- *(((int *)&entry)+1) = io_apic_read(apic, 0x11+i*2);
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- printk(KERN_DEBUG " %02x %03X %02X ",
- i,
- entry.dest.logical.logical_dest,
- entry.dest.physical.physical_dest
- );
-
- printk("%1d %1d %1d %1d %1d %1d %1d %02X\n",
- entry.mask,
- entry.trigger,
- entry.irr,
- entry.polarity,
- entry.delivery_status,
- entry.dest_mode,
- entry.delivery_mode,
- entry.vector
- );
- }
- }
- if (use_pci_vector())
- printk(KERN_INFO "Using vector-based indexing\n");
- printk(KERN_DEBUG "IRQ to pin mappings:\n");
- for (i = 0; i < NR_IRQS; i++) {
- struct irq_pin_list *entry = irq_2_pin + i;
- if (entry->pin < 0)
- continue;
- if (use_pci_vector() && !platform_legacy_irq(i))
- printk(KERN_DEBUG "IRQ%d ", IO_APIC_VECTOR(i));
- else
- printk(KERN_DEBUG "IRQ%d ", i);
- for (;;) {
- printk("-> %d:%d", entry->apic, entry->pin);
- if (!entry->next)
- break;
- entry = irq_2_pin + entry->next;
- }
- printk("\n");
- }
-
- printk(KERN_INFO ".................................... done.\n");
-
- return;
-}
-
-static __apicdebuginit void print_APIC_bitfield (int base)
-{
- unsigned int v;
- int i, j;
-
- if (apic_verbosity == APIC_QUIET)
- return;
-
- printk(KERN_DEBUG "0123456789abcdef0123456789abcdef\n" KERN_DEBUG);
- for (i = 0; i < 8; i++) {
- v = apic_read(base + i*0x10);
- for (j = 0; j < 32; j++) {
- if (v & (1<<j))
- printk("1");
- else
- printk("0");
- }
- printk("\n");
- }
-}
-
-void __apicdebuginit print_local_APIC(void * dummy)
-{
- unsigned int v, ver, maxlvt;
-
- if (apic_verbosity == APIC_QUIET)
- return;
-
- printk("\n" KERN_DEBUG "printing local APIC contents on CPU#%d/%d:\n",
- smp_processor_id(), hard_smp_processor_id());
- v = apic_read(APIC_ID);
- printk(KERN_INFO "... APIC ID: %08x (%01x)\n", v, GET_APIC_ID(v));
- v = apic_read(APIC_LVR);
- printk(KERN_INFO "... APIC VERSION: %08x\n", v);
- ver = GET_APIC_VERSION(v);
- maxlvt = get_maxlvt();
-
- v = apic_read(APIC_TASKPRI);
- printk(KERN_DEBUG "... APIC TASKPRI: %08x (%02x)\n", v, v &
APIC_TPRI_MASK);
-
- if (APIC_INTEGRATED(ver)) { /* !82489DX */
- v = apic_read(APIC_ARBPRI);
- printk(KERN_DEBUG "... APIC ARBPRI: %08x (%02x)\n", v,
- v & APIC_ARBPRI_MASK);
- v = apic_read(APIC_PROCPRI);
- printk(KERN_DEBUG "... APIC PROCPRI: %08x\n", v);
- }
-
- v = apic_read(APIC_EOI);
- printk(KERN_DEBUG "... APIC EOI: %08x\n", v);
- v = apic_read(APIC_RRR);
- printk(KERN_DEBUG "... APIC RRR: %08x\n", v);
- v = apic_read(APIC_LDR);
- printk(KERN_DEBUG "... APIC LDR: %08x\n", v);
- v = apic_read(APIC_DFR);
- printk(KERN_DEBUG "... APIC DFR: %08x\n", v);
- v = apic_read(APIC_SPIV);
- printk(KERN_DEBUG "... APIC SPIV: %08x\n", v);
-
- printk(KERN_DEBUG "... APIC ISR field:\n");
- print_APIC_bitfield(APIC_ISR);
- printk(KERN_DEBUG "... APIC TMR field:\n");
- print_APIC_bitfield(APIC_TMR);
- printk(KERN_DEBUG "... APIC IRR field:\n");
- print_APIC_bitfield(APIC_IRR);
-
- if (APIC_INTEGRATED(ver)) { /* !82489DX */
- if (maxlvt > 3) /* Due to the Pentium erratum 3AP. */
- apic_write(APIC_ESR, 0);
- v = apic_read(APIC_ESR);
- printk(KERN_DEBUG "... APIC ESR: %08x\n", v);
- }
-
- v = apic_read(APIC_ICR);
- printk(KERN_DEBUG "... APIC ICR: %08x\n", v);
- v = apic_read(APIC_ICR2);
- printk(KERN_DEBUG "... APIC ICR2: %08x\n", v);
-
- v = apic_read(APIC_LVTT);
- printk(KERN_DEBUG "... APIC LVTT: %08x\n", v);
-
- if (maxlvt > 3) { /* PC is LVT#4. */
- v = apic_read(APIC_LVTPC);
- printk(KERN_DEBUG "... APIC LVTPC: %08x\n", v);
- }
- v = apic_read(APIC_LVT0);
- printk(KERN_DEBUG "... APIC LVT0: %08x\n", v);
- v = apic_read(APIC_LVT1);
- printk(KERN_DEBUG "... APIC LVT1: %08x\n", v);
-
- if (maxlvt > 2) { /* ERR is LVT#3. */
- v = apic_read(APIC_LVTERR);
- printk(KERN_DEBUG "... APIC LVTERR: %08x\n", v);
- }
-
- v = apic_read(APIC_TMICT);
- printk(KERN_DEBUG "... APIC TMICT: %08x\n", v);
- v = apic_read(APIC_TMCCT);
- printk(KERN_DEBUG "... APIC TMCCT: %08x\n", v);
- v = apic_read(APIC_TDCR);
- printk(KERN_DEBUG "... APIC TDCR: %08x\n", v);
- printk("\n");
-}
-
-void print_all_local_APICs (void)
-{
- on_each_cpu(print_local_APIC, NULL, 1, 1);
-}
-
-void __apicdebuginit print_PIC(void)
-{
- extern spinlock_t i8259A_lock;
- unsigned int v;
- unsigned long flags;
-
- if (apic_verbosity == APIC_QUIET)
- return;
-
- printk(KERN_DEBUG "\nprinting PIC contents\n");
-
- spin_lock_irqsave(&i8259A_lock, flags);
-
- v = inb(0xa1) << 8 | inb(0x21);
- printk(KERN_DEBUG "... PIC IMR: %04x\n", v);
-
- v = inb(0xa0) << 8 | inb(0x20);
- printk(KERN_DEBUG "... PIC IRR: %04x\n", v);
-
- outb(0x0b,0xa0);
- outb(0x0b,0x20);
- v = inb(0xa0) << 8 | inb(0x20);
- outb(0x0a,0xa0);
- outb(0x0a,0x20);
-
- spin_unlock_irqrestore(&i8259A_lock, flags);
-
- printk(KERN_DEBUG "... PIC ISR: %04x\n", v);
-
- v = inb(0x4d1) << 8 | inb(0x4d0);
- printk(KERN_DEBUG "... PIC ELCR: %04x\n", v);
-}
-#else
-void __init print_IO_APIC(void) { }
-#endif /* !CONFIG_XEN */
-
-static void __init enable_IO_APIC(void)
-{
- union IO_APIC_reg_01 reg_01;
- int i;
- unsigned long flags;
-
- for (i = 0; i < PIN_MAP_SIZE; i++) {
- irq_2_pin[i].pin = -1;
- irq_2_pin[i].next = 0;
- }
- if (!pirqs_enabled)
- for (i = 0; i < MAX_PIRQS; i++)
- pirq_entries[i] = -1;
-
- /*
- * The number of IO-APIC IRQ registers (== #pins):
- */
- for (i = 0; i < nr_ioapics; i++) {
- spin_lock_irqsave(&ioapic_lock, flags);
- reg_01.raw = io_apic_read(i, 1);
- spin_unlock_irqrestore(&ioapic_lock, flags);
- nr_ioapic_registers[i] = reg_01.bits.entries+1;
- }
-
- /*
- * Do not trust the IO-APIC being empty at bootup
- */
- clear_IO_APIC();
-}
-
-/*
- * Not an __init, needed by the reboot code
- */
-void disable_IO_APIC(void)
-{
- /*
- * Clear the IO-APIC before rebooting:
- */
- clear_IO_APIC();
-#ifndef CONFIG_XEN
- disconnect_bsp_APIC();
-#endif
-}
-
-/*
- * function to set the IO-APIC physical IDs based on the
- * values stored in the MPC table.
- *
- * by Matt Domsch <Matt_Domsch@xxxxxxxx> Tue Dec 21 12:25:05 CST 1999
- */
-#ifndef CONFIG_XEN
-static void __init setup_ioapic_ids_from_mpc (void)
-{
- union IO_APIC_reg_00 reg_00;
- int apic;
- int i;
- unsigned char old_id;
- unsigned long flags;
-
- /*
- * Set the IOAPIC ID to the value stored in the MPC table.
- */
- for (apic = 0; apic < nr_ioapics; apic++) {
-
- /* Read the register 0 value */
- spin_lock_irqsave(&ioapic_lock, flags);
- reg_00.raw = io_apic_read(apic, 0);
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- old_id = mp_ioapics[apic].mpc_apicid;
-
-
- printk(KERN_INFO "Using IO-APIC %d\n",
mp_ioapics[apic].mpc_apicid);
-
-
- /*
- * We need to adjust the IRQ routing table
- * if the ID changed.
- */
- if (old_id != mp_ioapics[apic].mpc_apicid)
- for (i = 0; i < mp_irq_entries; i++)
- if (mp_irqs[i].mpc_dstapic == old_id)
- mp_irqs[i].mpc_dstapic
- = mp_ioapics[apic].mpc_apicid;
-
- /*
- * Read the right value from the MPC table and
- * write it into the ID register.
- */
- apic_printk(APIC_VERBOSE,KERN_INFO "...changing IO-APIC
physical APIC ID to %d ...",
- mp_ioapics[apic].mpc_apicid);
-
- reg_00.bits.ID = mp_ioapics[apic].mpc_apicid;
- spin_lock_irqsave(&ioapic_lock, flags);
- io_apic_write(apic, 0, reg_00.raw);
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- /*
- * Sanity check
- */
- spin_lock_irqsave(&ioapic_lock, flags);
- reg_00.raw = io_apic_read(apic, 0);
- spin_unlock_irqrestore(&ioapic_lock, flags);
- if (reg_00.bits.ID != mp_ioapics[apic].mpc_apicid)
- printk("could not set ID!\n");
- else
- apic_printk(APIC_VERBOSE," ok.\n");
- }
-}
-#else
-static void __init setup_ioapic_ids_from_mpc(void) { }
-#endif
-
-/*
- * There is a nasty bug in some older SMP boards, their mptable lies
- * about the timer IRQ. We do the following to work around the situation:
- *
- * - timer IRQ defaults to IO-APIC IRQ
- * - if this function detects that timer IRQs are defunct, then we fall
- * back to ISA timer IRQs
- */
-#ifndef CONFIG_XEN
-static int __init timer_irq_works(void)
-{
- unsigned long t1 = jiffies;
-
- local_irq_enable();
- /* Let ten ticks pass... */
- mdelay((10 * 1000) / HZ);
-
- /*
- * Expect a few ticks at least, to be sure some possible
- * glue logic does not lock up after one or two first
- * ticks in a non-ExtINT mode. Also the local APIC
- * might have cached one ExtINT interrupt. Finally, at
- * least one tick may be lost due to delays.
- */
-
- /* jiffies wrap? */
- if (jiffies - t1 > 4)
- return 1;
- return 0;
-}
-
-/*
- * In the SMP+IOAPIC case it might happen that there are an unspecified
- * number of pending IRQ events unhandled. These cases are very rare,
- * so we 'resend' these IRQs via IPIs, to the same CPU. It's much
- * better to do it this way as thus we do not have to be aware of
- * 'pending' interrupts in the IRQ path, except at this point.
- */
-/*
- * Edge triggered needs to resend any interrupt
- * that was delayed but this is now handled in the device
- * independent code.
- */
-
-/*
- * Starting up a edge-triggered IO-APIC interrupt is
- * nasty - we need to make sure that we get the edge.
- * If it is already asserted for some reason, we need
- * return 1 to indicate that is was pending.
- *
- * This is not complete - we should be able to fake
- * an edge even if it isn't on the 8259A...
- */
-
-static unsigned int startup_edge_ioapic_irq(unsigned int irq)
-{
- int was_pending = 0;
- unsigned long flags;
-
- spin_lock_irqsave(&ioapic_lock, flags);
- if (irq < 16) {
- disable_8259A_irq(irq);
- if (i8259A_irq_pending(irq))
- was_pending = 1;
- }
- __unmask_IO_APIC_irq(irq);
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- return was_pending;
-}
-
-/*
- * Once we have recorded IRQ_PENDING already, we can mask the
- * interrupt for real. This prevents IRQ storms from unhandled
- * devices.
- */
-static void ack_edge_ioapic_irq(unsigned int irq)
-{
- if ((irq_desc[irq].status & (IRQ_PENDING | IRQ_DISABLED))
- == (IRQ_PENDING | IRQ_DISABLED))
- mask_IO_APIC_irq(irq);
- ack_APIC_irq();
-}
-
-/*
- * Level triggered interrupts can just be masked,
- * and shutting down and starting up the interrupt
- * is the same as enabling and disabling them -- except
- * with a startup need to return a "was pending" value.
- *
- * Level triggered interrupts are special because we
- * do not touch any IO-APIC register while handling
- * them. We ack the APIC in the end-IRQ handler, not
- * in the start-IRQ-handler. Protection against reentrance
- * from the same interrupt is still provided, both by the
- * generic IRQ layer and by the fact that an unacked local
- * APIC does not accept IRQs.
- */
-static unsigned int startup_level_ioapic_irq (unsigned int irq)
-{
- unmask_IO_APIC_irq(irq);
-
- return 0; /* don't check for pending */
-}
-
-static void end_level_ioapic_irq (unsigned int irq)
-{
- ack_APIC_irq();
-}
-
-static void set_ioapic_affinity_irq(unsigned int irq, cpumask_t mask)
-{
- unsigned long flags;
- unsigned int dest;
-
- dest = cpu_mask_to_apicid(mask);
-
- /*
- * Only the high 8 bits are valid.
- */
- dest = SET_APIC_LOGICAL_ID(dest);
-
- spin_lock_irqsave(&ioapic_lock, flags);
- __DO_ACTION(1, = dest, )
- spin_unlock_irqrestore(&ioapic_lock, flags);
-}
-
-#ifdef CONFIG_PCI_MSI
-static unsigned int startup_edge_ioapic_vector(unsigned int vector)
-{
- int irq = vector_to_irq(vector);
-
- return startup_edge_ioapic_irq(irq);
-}
-
-static void ack_edge_ioapic_vector(unsigned int vector)
-{
- int irq = vector_to_irq(vector);
-
- ack_edge_ioapic_irq(irq);
-}
-
-static unsigned int startup_level_ioapic_vector (unsigned int vector)
-{
- int irq = vector_to_irq(vector);
-
- return startup_level_ioapic_irq (irq);
-}
-
-static void end_level_ioapic_vector (unsigned int vector)
-{
- int irq = vector_to_irq(vector);
-
- end_level_ioapic_irq(irq);
-}
-
-static void mask_IO_APIC_vector (unsigned int vector)
-{
- int irq = vector_to_irq(vector);
-
- mask_IO_APIC_irq(irq);
-}
-
-static void unmask_IO_APIC_vector (unsigned int vector)
-{
- int irq = vector_to_irq(vector);
-
- unmask_IO_APIC_irq(irq);
-}
-
-static void set_ioapic_affinity_vector (unsigned int vector,
- cpumask_t cpu_mask)
-{
- int irq = vector_to_irq(vector);
-
- set_ioapic_affinity_irq(irq, cpu_mask);
-}
-#endif
-
-/*
- * Level and edge triggered IO-APIC interrupts need different handling,
- * so we use two separate IRQ descriptors. Edge triggered IRQs can be
- * handled with the level-triggered descriptor, but that one has slightly
- * more overhead. Level-triggered interrupts cannot be handled with the
- * edge-triggered handler, without risking IRQ storms and other ugly
- * races.
- */
-
-static struct hw_interrupt_type ioapic_edge_type = {
- .typename = "IO-APIC-edge",
- .startup = startup_edge_ioapic,
- .shutdown = shutdown_edge_ioapic,
- .enable = enable_edge_ioapic,
- .disable = disable_edge_ioapic,
- .ack = ack_edge_ioapic,
- .end = end_edge_ioapic,
- .set_affinity = set_ioapic_affinity,
-};
-
-static struct hw_interrupt_type ioapic_level_type = {
- .typename = "IO-APIC-level",
- .startup = startup_level_ioapic,
- .shutdown = shutdown_level_ioapic,
- .enable = enable_level_ioapic,
- .disable = disable_level_ioapic,
- .ack = mask_and_ack_level_ioapic,
- .end = end_level_ioapic,
- .set_affinity = set_ioapic_affinity,
-};
-#endif /* !CONFIG_XEN */
-
-static inline void init_IO_APIC_traps(void)
-{
- int irq;
-
- /*
- * NOTE! The local APIC isn't very good at handling
- * multiple interrupts at the same interrupt level.
- * As the interrupt level is determined by taking the
- * vector number and shifting that right by 4, we
- * want to spread these out a bit so that they don't
- * all fall in the same interrupt level.
- *
- * Also, we've got to be careful not to trash gate
- * 0x80, because int 0x80 is hm, kind of importantish. ;)
- */
- for (irq = 0; irq < NR_IRQS ; irq++) {
- int tmp = irq;
- if (use_pci_vector()) {
- if (!platform_legacy_irq(tmp))
- if ((tmp = vector_to_irq(tmp)) == -1)
- continue;
- }
- if (IO_APIC_IRQ(tmp) && !IO_APIC_VECTOR(tmp)) {
- /*
- * Hmm.. We don't have an entry for this,
- * so default to an old-fashioned 8259
- * interrupt if we can..
- */
- if (irq < 16)
- make_8259A_irq(irq);
-#ifndef CONFIG_XEN
- else
- /* Strange. Oh, well.. */
- irq_desc[irq].handler = &no_irq_type;
-#endif
- }
- }
-}
-
-#ifndef CONFIG_XEN
-static void enable_lapic_irq (unsigned int irq)
-{
- unsigned long v;
-
- v = apic_read(APIC_LVT0);
- apic_write_around(APIC_LVT0, v & ~APIC_LVT_MASKED);
-}
-
-static void disable_lapic_irq (unsigned int irq)
-{
- unsigned long v;
-
- v = apic_read(APIC_LVT0);
- apic_write_around(APIC_LVT0, v | APIC_LVT_MASKED);
-}
-
-static void ack_lapic_irq (unsigned int irq)
-{
- ack_APIC_irq();
-}
-
-static void end_lapic_irq (unsigned int i) { /* nothing */ }
-
-static struct hw_interrupt_type lapic_irq_type = {
- .typename = "local-APIC-edge",
- .startup = NULL, /* startup_irq() not used for IRQ0 */
- .shutdown = NULL, /* shutdown_irq() not used for IRQ0 */
- .enable = enable_lapic_irq,
- .disable = disable_lapic_irq,
- .ack = ack_lapic_irq,
- .end = end_lapic_irq,
-};
-
-static void setup_nmi (void)
-{
- /*
- * Dirty trick to enable the NMI watchdog ...
- * We put the 8259A master into AEOI mode and
- * unmask on all local APICs LVT0 as NMI.
- *
- * The idea to use the 8259A in AEOI mode ('8259A Virtual Wire')
- * is from Maciej W. Rozycki - so we do not have to EOI from
- * the NMI handler or the timer interrupt.
- */
- printk(KERN_INFO "activating NMI Watchdog ...");
-
- enable_NMI_through_LVT0(NULL);
-
- printk(" done.\n");
-}
-
-/*
- * This looks a bit hackish but it's about the only one way of sending
- * a few INTA cycles to 8259As and any associated glue logic. ICR does
- * not support the ExtINT mode, unfortunately. We need to send these
- * cycles as some i82489DX-based boards have glue logic that keeps the
- * 8259A interrupt line asserted until INTA. --macro
- */
-static inline void unlock_ExtINT_logic(void)
-{
- int pin, i;
- struct IO_APIC_route_entry entry0, entry1;
- unsigned char save_control, save_freq_select;
- unsigned long flags;
-
- pin = find_isa_irq_pin(8, mp_INT);
- if (pin == -1)
- return;
-
- spin_lock_irqsave(&ioapic_lock, flags);
- *(((int *)&entry0) + 1) = io_apic_read(0, 0x11 + 2 * pin);
- *(((int *)&entry0) + 0) = io_apic_read(0, 0x10 + 2 * pin);
- spin_unlock_irqrestore(&ioapic_lock, flags);
- clear_IO_APIC_pin(0, pin);
-
- memset(&entry1, 0, sizeof(entry1));
-
- entry1.dest_mode = 0; /* physical delivery */
- entry1.mask = 0; /* unmask IRQ now */
- entry1.dest.physical.physical_dest = hard_smp_processor_id();
- entry1.delivery_mode = dest_ExtINT;
- entry1.polarity = entry0.polarity;
- entry1.trigger = 0;
- entry1.vector = 0;
-
- spin_lock_irqsave(&ioapic_lock, flags);
- io_apic_write(0, 0x11 + 2 * pin, *(((int *)&entry1) + 1));
- io_apic_write(0, 0x10 + 2 * pin, *(((int *)&entry1) + 0));
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- save_control = CMOS_READ(RTC_CONTROL);
- save_freq_select = CMOS_READ(RTC_FREQ_SELECT);
- CMOS_WRITE((save_freq_select & ~RTC_RATE_SELECT) | 0x6,
- RTC_FREQ_SELECT);
- CMOS_WRITE(save_control | RTC_PIE, RTC_CONTROL);
-
- i = 100;
- while (i-- > 0) {
- mdelay(10);
- if ((CMOS_READ(RTC_INTR_FLAGS) & RTC_PF) == RTC_PF)
- i -= 10;
- }
-
- CMOS_WRITE(save_control, RTC_CONTROL);
- CMOS_WRITE(save_freq_select, RTC_FREQ_SELECT);
- clear_IO_APIC_pin(0, pin);
-
- spin_lock_irqsave(&ioapic_lock, flags);
- io_apic_write(0, 0x11 + 2 * pin, *(((int *)&entry0) + 1));
- io_apic_write(0, 0x10 + 2 * pin, *(((int *)&entry0) + 0));
- spin_unlock_irqrestore(&ioapic_lock, flags);
-}
-
-/*
- * This code may look a bit paranoid, but it's supposed to cooperate with
- * a wide range of boards and BIOS bugs. Fortunately only the timer IRQ
- * is so screwy. Thanks to Brian Perkins for testing/hacking this beast
- * fanatically on his truly buggy board.
- */
-static inline void check_timer(void)
-{
- int pin1, pin2;
- int vector;
-
- /*
- * get/set the timer IRQ vector:
- */
- disable_8259A_irq(0);
- vector = assign_irq_vector(0);
- set_intr_gate(vector, interrupt[0]);
-
- /*
- * Subtle, code in do_timer_interrupt() expects an AEOI
- * mode for the 8259A whenever interrupts are routed
- * through I/O APICs. Also IRQ0 has to be enabled in
- * the 8259A which implies the virtual wire has to be
- * disabled in the local APIC.
- */
- apic_write_around(APIC_LVT0, APIC_LVT_MASKED | APIC_DM_EXTINT);
- init_8259A(1);
- enable_8259A_irq(0);
-
- pin1 = find_isa_irq_pin(0, mp_INT);
- pin2 = find_isa_irq_pin(0, mp_ExtINT);
-
- apic_printk(APIC_VERBOSE,KERN_INFO "..TIMER: vector=0x%02X pin1=%d
pin2=%d\n", vector, pin1, pin2);
-
- if (pin1 != -1) {
- /*
- * Ok, does IRQ0 through the IOAPIC work?
- */
- unmask_IO_APIC_irq(0);
- if (timer_irq_works()) {
- nmi_watchdog_default();
- if (nmi_watchdog == NMI_IO_APIC) {
- disable_8259A_irq(0);
- setup_nmi();
- enable_8259A_irq(0);
- check_nmi_watchdog();
- }
- return;
- }
- clear_IO_APIC_pin(0, pin1);
- apic_printk(APIC_QUIET,KERN_ERR "..MP-BIOS bug: 8254 timer not
connected to IO-APIC\n");
- }
-
- apic_printk(APIC_VERBOSE,KERN_INFO "...trying to set up timer (IRQ0)
through the 8259A ... ");
- if (pin2 != -1) {
- apic_printk(APIC_VERBOSE,"\n..... (found pin %d) ...", pin2);
- /*
- * legacy devices should be connected to IO APIC #0
- */
- setup_ExtINT_IRQ0_pin(pin2, vector);
- if (timer_irq_works()) {
- printk("works.\n");
- nmi_watchdog_default();
- if (nmi_watchdog == NMI_IO_APIC) {
- setup_nmi();
- check_nmi_watchdog();
- }
- return;
- }
- /*
- * Cleanup, just in case ...
- */
- clear_IO_APIC_pin(0, pin2);
- }
- printk(" failed.\n");
-
- if (nmi_watchdog) {
- printk(KERN_WARNING "timer doesn't work through the IO-APIC -
disabling NMI Watchdog!\n");
- nmi_watchdog = 0;
- }
-
- apic_printk(APIC_VERBOSE, KERN_INFO "...trying to set up timer as
Virtual Wire IRQ...");
-
- disable_8259A_irq(0);
- irq_desc[0].handler = &lapic_irq_type;
- apic_write_around(APIC_LVT0, APIC_DM_FIXED | vector); /* Fixed mode */
- enable_8259A_irq(0);
-
- if (timer_irq_works()) {
- apic_printk(APIC_QUIET, " works.\n");
- return;
- }
- apic_write_around(APIC_LVT0, APIC_LVT_MASKED | APIC_DM_FIXED | vector);
- apic_printk(APIC_VERBOSE," failed.\n");
-
- apic_printk(APIC_VERBOSE, KERN_INFO "...trying to set up timer as
ExtINT IRQ...");
-
- init_8259A(0);
- make_8259A_irq(0);
- apic_write_around(APIC_LVT0, APIC_DM_EXTINT);
-
- unlock_ExtINT_logic();
-
- if (timer_irq_works()) {
- apic_printk(APIC_VERBOSE," works.\n");
- return;
- }
- apic_printk(APIC_VERBOSE," failed :(.\n");
- panic("IO-APIC + timer doesn't work! Try using the 'noapic' kernel
parameter\n");
-}
-#else
-#define check_timer() ((void)0)
-#endif /* !CONFIG_XEN */
-
-/*
- *
- * IRQ's that are handled by the PIC in the MPS IOAPIC case.
- * - IRQ2 is the cascade IRQ, and cannot be a io-apic IRQ.
- * Linux doesn't really care, as it's not actually used
- * for any interrupt handling anyway.
- */
-#define PIC_IRQS (1<<2)
-
-void __init setup_IO_APIC(void)
-{
- enable_IO_APIC();
-
- if (acpi_ioapic)
- io_apic_irqs = ~0; /* all IRQs go through IOAPIC */
- else
- io_apic_irqs = ~PIC_IRQS;
-
- apic_printk(APIC_VERBOSE, "ENABLING IO-APIC IRQs\n");
-
- /*
- * Set up the IO-APIC IRQ routing table.
- */
- if (!acpi_ioapic)
- setup_ioapic_ids_from_mpc();
-#ifndef CONFIG_XEN
- sync_Arb_IDs();
-#endif /* !CONFIG_XEN */
- setup_IO_APIC_irqs();
- init_IO_APIC_traps();
- check_timer();
- if (!acpi_ioapic)
- print_IO_APIC();
-}
-
-struct sysfs_ioapic_data {
- struct sys_device dev;
- struct IO_APIC_route_entry entry[0];
-};
-static struct sysfs_ioapic_data * mp_ioapic_data[MAX_IO_APICS];
-
-static int ioapic_suspend(struct sys_device *dev, u32 state)
-{
- struct IO_APIC_route_entry *entry;
- struct sysfs_ioapic_data *data;
- unsigned long flags;
- int i;
-
- data = container_of(dev, struct sysfs_ioapic_data, dev);
- entry = data->entry;
- spin_lock_irqsave(&ioapic_lock, flags);
- for (i = 0; i < nr_ioapic_registers[dev->id]; i ++, entry ++ ) {
- *(((int *)entry) + 1) = io_apic_read(dev->id, 0x11 + 2 * i);
- *(((int *)entry) + 0) = io_apic_read(dev->id, 0x10 + 2 * i);
- }
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- return 0;
-}
-
-static int ioapic_resume(struct sys_device *dev)
-{
- struct IO_APIC_route_entry *entry;
- struct sysfs_ioapic_data *data;
- unsigned long flags;
- union IO_APIC_reg_00 reg_00;
- int i;
-
- data = container_of(dev, struct sysfs_ioapic_data, dev);
- entry = data->entry;
-
- spin_lock_irqsave(&ioapic_lock, flags);
- reg_00.raw = io_apic_read(dev->id, 0);
- if (reg_00.bits.ID != mp_ioapics[dev->id].mpc_apicid) {
- reg_00.bits.ID = mp_ioapics[dev->id].mpc_apicid;
- io_apic_write(dev->id, 0, reg_00.raw);
- }
- for (i = 0; i < nr_ioapic_registers[dev->id]; i ++, entry ++ ) {
- io_apic_write(dev->id, 0x11+2*i, *(((int *)entry)+1));
- io_apic_write(dev->id, 0x10+2*i, *(((int *)entry)+0));
- }
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- return 0;
-}
-
-static struct sysdev_class ioapic_sysdev_class = {
- set_kset_name("ioapic"),
- .suspend = ioapic_suspend,
- .resume = ioapic_resume,
-};
-
-static int __init ioapic_init_sysfs(void)
-{
- struct sys_device * dev;
- int i, size, error = 0;
-
- error = sysdev_class_register(&ioapic_sysdev_class);
- if (error)
- return error;
-
- for (i = 0; i < nr_ioapics; i++ ) {
- size = sizeof(struct sys_device) + nr_ioapic_registers[i]
- * sizeof(struct IO_APIC_route_entry);
- mp_ioapic_data[i] = kmalloc(size, GFP_KERNEL);
- if (!mp_ioapic_data[i]) {
- printk(KERN_ERR "Can't suspend/resume IOAPIC %d\n", i);
- continue;
- }
- memset(mp_ioapic_data[i], 0, size);
- dev = &mp_ioapic_data[i]->dev;
- dev->id = i;
- dev->cls = &ioapic_sysdev_class;
- error = sysdev_register(dev);
- if (error) {
- kfree(mp_ioapic_data[i]);
- mp_ioapic_data[i] = NULL;
- printk(KERN_ERR "Can't suspend/resume IOAPIC %d\n", i);
- continue;
- }
- }
-
- return 0;
-}
-
-device_initcall(ioapic_init_sysfs);
-
-/* --------------------------------------------------------------------------
- ACPI-based IOAPIC Configuration
- --------------------------------------------------------------------------
*/
-
-#ifdef CONFIG_ACPI_BOOT
-
-#define IO_APIC_MAX_ID 0xFE
-
-int __init io_apic_get_unique_id (int ioapic, int apic_id)
-{
-#ifndef CONFIG_XEN
- union IO_APIC_reg_00 reg_00;
- static physid_mask_t apic_id_map;
- unsigned long flags;
- int i = 0;
-
- /*
- * The P4 platform supports up to 256 APIC IDs on two separate APIC
- * buses (one for LAPICs, one for IOAPICs), where predecessors only
- * supports up to 16 on one shared APIC bus.
- *
- * TBD: Expand LAPIC/IOAPIC support on P4-class systems to take full
- * advantage of new APIC bus architecture.
- */
-
- if (physids_empty(apic_id_map))
- apic_id_map = phys_cpu_present_map;
-
- spin_lock_irqsave(&ioapic_lock, flags);
- reg_00.raw = io_apic_read(ioapic, 0);
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- if (apic_id >= IO_APIC_MAX_ID) {
- apic_printk(APIC_QUIET, KERN_WARNING "IOAPIC[%d]: Invalid
apic_id %d, trying "
- "%d\n", ioapic, apic_id, reg_00.bits.ID);
- apic_id = reg_00.bits.ID;
- }
-
- /*
- * Every APIC in a system must have a unique ID or we get lots of nice
- * 'stuck on smp_invalidate_needed IPI wait' messages.
- */
- if (physid_isset(apic_id, apic_id_map)) {
-
- for (i = 0; i < IO_APIC_MAX_ID; i++) {
- if (!physid_isset(i, apic_id_map))
- break;
- }
-
- if (i == IO_APIC_MAX_ID)
- panic("Max apic_id exceeded!\n");
-
- apic_printk(APIC_VERBOSE, KERN_WARNING "IOAPIC[%d]: apic_id %d
already used, "
- "trying %d\n", ioapic, apic_id, i);
-
- apic_id = i;
- }
-
- physid_set(apic_id, apic_id_map);
-
- if (reg_00.bits.ID != apic_id) {
- reg_00.bits.ID = apic_id;
-
- spin_lock_irqsave(&ioapic_lock, flags);
- io_apic_write(ioapic, 0, reg_00.raw);
- reg_00.raw = io_apic_read(ioapic, 0);
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- /* Sanity check */
- if (reg_00.bits.ID != apic_id)
- panic("IOAPIC[%d]: Unable change apic_id!\n", ioapic);
- }
-
- apic_printk(APIC_VERBOSE,KERN_INFO "IOAPIC[%d]: Assigned apic_id %d\n",
ioapic, apic_id);
-#endif /* !CONFIG_XEN */
-
- return apic_id;
-}
-
-
-int __init io_apic_get_version (int ioapic)
-{
- union IO_APIC_reg_01 reg_01;
- unsigned long flags;
-
- spin_lock_irqsave(&ioapic_lock, flags);
- reg_01.raw = io_apic_read(ioapic, 1);
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- return reg_01.bits.version;
-}
-
-
-int __init io_apic_get_redir_entries (int ioapic)
-{
- union IO_APIC_reg_01 reg_01;
- unsigned long flags;
-
- spin_lock_irqsave(&ioapic_lock, flags);
- reg_01.raw = io_apic_read(ioapic, 1);
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- return reg_01.bits.entries;
-}
-
-
-int io_apic_set_pci_routing (int ioapic, int pin, int irq, int edge_level, int
active_high_low)
-{
- struct IO_APIC_route_entry entry;
- unsigned long flags;
-
- if (!IO_APIC_IRQ(irq)) {
- apic_printk(APIC_QUIET,KERN_ERR "IOAPIC[%d]: Invalid reference
to IRQ 0\n",
- ioapic);
- return -EINVAL;
- }
-
- /*
- * Generate a PCI IRQ routing entry and program the IOAPIC accordingly.
- * Note that we mask (disable) IRQs now -- these get enabled when the
- * corresponding device driver registers for this IRQ.
- */
-
- memset(&entry,0,sizeof(entry));
-
- entry.delivery_mode = INT_DELIVERY_MODE;
- entry.dest_mode = INT_DEST_MODE;
- entry.dest.logical.logical_dest = cpu_mask_to_apicid(TARGET_CPUS);
- entry.trigger = edge_level;
- entry.polarity = active_high_low;
- entry.mask = 1; /* Disabled (masked) */
-
- /*
- * IRQs < 16 are already in the irq_2_pin[] map
- */
- if (irq >= 16)
- add_pin_to_irq(irq, ioapic, pin);
-
- entry.vector = assign_irq_vector(irq);
-
- apic_printk(APIC_VERBOSE,KERN_DEBUG "IOAPIC[%d]: Set PCI routing entry
(%d-%d -> 0x%x -> "
- "IRQ %d Mode:%i Active:%i)\n", ioapic,
- mp_ioapics[ioapic].mpc_apicid, pin, entry.vector, irq,
- edge_level, active_high_low);
-
- ioapic_register_intr(irq, entry.vector, edge_level);
-
- if (!ioapic && (irq < 16))
- disable_8259A_irq(irq);
-
- spin_lock_irqsave(&ioapic_lock, flags);
- io_apic_write(ioapic, 0x11+2*pin, *(((int *)&entry)+1));
- io_apic_write(ioapic, 0x10+2*pin, *(((int *)&entry)+0));
- spin_unlock_irqrestore(&ioapic_lock, flags);
-
- return 0;
-}
-
-#endif /*CONFIG_ACPI_BOOT*/
-
-
-#ifndef CONFIG_XEN
-/*
- * This function currently is only a helper for the i386 smp boot process where
- * we need to reprogram the ioredtbls to cater for the cpus which have come
online
- * so mask in all cases should simply be TARGET_CPUS
- */
-void __init setup_ioapic_dest(void)
-{
- int pin, ioapic, irq, irq_entry;
-
- if (skip_ioapic_setup == 1)
- return;
-
- for (ioapic = 0; ioapic < nr_ioapics; ioapic++) {
- for (pin = 0; pin < nr_ioapic_registers[ioapic]; pin++) {
- irq_entry = find_irq_entry(ioapic, pin, mp_INT);
- if (irq_entry == -1)
- continue;
- irq = pin_2_irq(irq_entry, ioapic, pin);
- set_ioapic_affinity_irq(irq, TARGET_CPUS);
- }
-
- }
-}
-#endif /* !CONFIG_XEN */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/ioport.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/ioport.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,63 +0,0 @@
-/*
- * linux/arch/x86_64/kernel/ioport.c
- *
- * This contains the io-permission bitmap code - written by obz, with changes
- * by Linus.
- */
-
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/types.h>
-#include <linux/ioport.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/smp_lock.h>
-#include <linux/stddef.h>
-#include <linux/slab.h>
-#include <linux/thread_info.h>
-#include <asm-xen/xen-public/physdev.h>
-
-/*
- * sys_iopl has to be used when you want to access the IO ports
- * beyond the 0x3ff range: to get the full 65536 ports bitmapped
- * you'd need 8kB of bitmaps/process, which is a bit excessive.
- *
- */
-
-// asmlinkage long sys_iopl(unsigned int level, struct pt_regs *regs)
-asmlinkage long sys_iopl(unsigned int new_io_pl)
-{
- unsigned int old_io_pl = current->thread.io_pl;
- physdev_op_t op;
-
-
- if (new_io_pl > 3)
- return -EINVAL;
-
- /* Need "raw I/O" privileges for direct port access. */
- if ((new_io_pl > old_io_pl) && !capable(CAP_SYS_RAWIO))
- return -EPERM;
-
- /* Maintain OS privileges even if user attempts to relinquish them. */
- if (new_io_pl == 0)
- new_io_pl = 1;
-
- /* Change our version of the privilege levels. */
- current->thread.io_pl = new_io_pl;
-
- /* Force the change at ring 0. */
- op.cmd = PHYSDEVOP_SET_IOPL;
- op.u.set_iopl.iopl = new_io_pl;
- HYPERVISOR_physdev_op(&op);
-
- return 0;
-}
-
-/*
- * this changes the io permissions bitmap in the current task.
- */
-asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int turn_on)
-{
- return turn_on ? sys_iopl(3) : 0;
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/irq.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/irq.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,105 +0,0 @@
-/*
- * linux/arch/x86_64/kernel/irq.c
- *
- * Copyright (C) 1992, 1998 Linus Torvalds, Ingo Molnar
- *
- * This file contains the lowest level x86_64-specific interrupt
- * entry and irq statistics code. All the remaining irq logic is
- * done by the generic kernel/irq/ code and in the
- * x86_64-specific irq controller code. (e.g. i8259.c and
- * io_apic.c.)
- */
-#include <asm/uaccess.h>
-#include <linux/module.h>
-#include <linux/seq_file.h>
-#include <linux/interrupt.h>
-#include <linux/kernel_stat.h>
-
-/*
- * Interrupt statistics:
- */
-
-atomic_t irq_err_count;
-
-
-/*
- * Generic, controller-independent functions:
- */
-
-int show_interrupts(struct seq_file *p, void *v)
-{
- int i = *(loff_t *) v, j;
- struct irqaction * action;
- unsigned long flags;
-
- if (i == 0) {
- seq_printf(p, " ");
- for (j=0; j<NR_CPUS; j++)
- if (cpu_online(j))
- seq_printf(p, "CPU%d ",j);
- seq_putc(p, '\n');
- }
-
- if (i < NR_IRQS) {
- spin_lock_irqsave(&irq_desc[i].lock, flags);
- action = irq_desc[i].action;
- if (!action)
- goto skip;
- seq_printf(p, "%3d: ",i);
-#ifndef CONFIG_SMP
- seq_printf(p, "%10u ", kstat_irqs(i));
-#else
- for (j=0; j<NR_CPUS; j++)
- if (cpu_online(j))
- seq_printf(p, "%10u ",
- kstat_cpu(j).irqs[i]);
-#endif
- seq_printf(p, " %14s", irq_desc[i].handler->typename);
-
- seq_printf(p, " %s", action->name);
- for (action=action->next; action; action = action->next)
- seq_printf(p, ", %s", action->name);
- seq_putc(p, '\n');
-skip:
- spin_unlock_irqrestore(&irq_desc[i].lock, flags);
- } else if (i == NR_IRQS) {
- seq_printf(p, "NMI: ");
- for (j = 0; j < NR_CPUS; j++)
- if (cpu_online(j))
- seq_printf(p, "%10u ", cpu_pda[j].__nmi_count);
- seq_putc(p, '\n');
-#ifdef CONFIG_X86_LOCAL_APIC
- seq_printf(p, "LOC: ");
- for (j = 0; j < NR_CPUS; j++)
- if (cpu_online(j))
- seq_printf(p, "%10u ",
cpu_pda[j].apic_timer_irqs);
- seq_putc(p, '\n');
-#endif
- seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
-#ifdef CONFIG_X86_IO_APIC
-#ifdef APIC_MISMATCH_DEBUG
- seq_printf(p, "MIS: %10u\n", atomic_read(&irq_mis_count));
-#endif
-#endif
- }
- return 0;
-}
-
-/*
- * do_IRQ handles all normal device IRQ's (the special
- * SMP cross-CPU interrupts have their own specific
- * handlers).
- */
-asmlinkage unsigned int do_IRQ(struct pt_regs *regs)
-{
- /* high bits used in ret_from_ code */
- int irq = regs->orig_rax & __IRQ_MASK(HARDIRQ_BITS);
-
- irq_enter();
-
- __do_IRQ(irq, regs);
- irq_exit();
-
- return 1;
-}
-
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/ldt.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/ldt.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,263 +0,0 @@
-/*
- * linux/arch/x86_64/kernel/ldt.c
- *
- * Copyright (C) 1992 Krishna Balasubramanian and Linus Torvalds
- * Copyright (C) 1999 Ingo Molnar <mingo@xxxxxxxxxx>
- * Copyright (C) 2002 Andi Kleen
- *
- * This handles calls from both 32bit and 64bit mode.
- */
-
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/smp_lock.h>
-#include <linux/vmalloc.h>
-#include <linux/slab.h>
-
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#include <asm/ldt.h>
-#include <asm/desc.h>
-#include <asm/proto.h>
-#include <asm/pgalloc.h>
-
-#ifdef CONFIG_SMP /* avoids "defined but not used" warnig */
-static void flush_ldt(void *null)
-{
- if (current->active_mm)
- load_LDT(¤t->active_mm->context);
-}
-#endif
-
-static int alloc_ldt(mm_context_t *pc, unsigned mincount, int reload)
-{
- void *oldldt;
- void *newldt;
- unsigned oldsize;
-
- if (mincount <= (unsigned)pc->size)
- return 0;
- oldsize = pc->size;
- mincount = (mincount+511)&(~511);
- if (mincount*LDT_ENTRY_SIZE > PAGE_SIZE)
- newldt = vmalloc(mincount*LDT_ENTRY_SIZE);
- else
- newldt = kmalloc(mincount*LDT_ENTRY_SIZE, GFP_KERNEL);
-
- if (!newldt)
- return -ENOMEM;
-
- if (oldsize)
- memcpy(newldt, pc->ldt, oldsize*LDT_ENTRY_SIZE);
- oldldt = pc->ldt;
- memset(newldt+oldsize*LDT_ENTRY_SIZE, 0,
(mincount-oldsize)*LDT_ENTRY_SIZE);
- wmb();
- pc->ldt = newldt;
- wmb();
- pc->size = mincount;
- wmb();
- if (reload) {
-#ifdef CONFIG_SMP
- cpumask_t mask;
- preempt_disable();
-#endif
- make_pages_readonly(pc->ldt, (pc->size * LDT_ENTRY_SIZE) /
- PAGE_SIZE);
- load_LDT(pc);
-#ifdef CONFIG_SMP
- mask = cpumask_of_cpu(smp_processor_id());
- if (!cpus_equal(current->mm->cpu_vm_mask, mask))
- smp_call_function(flush_ldt, NULL, 1, 1);
- preempt_enable();
-#endif
- }
- if (oldsize) {
- make_pages_writable(oldldt, (oldsize * LDT_ENTRY_SIZE) /
- PAGE_SIZE);
- if (oldsize*LDT_ENTRY_SIZE > PAGE_SIZE)
- vfree(oldldt);
- else
- kfree(oldldt);
- }
- return 0;
-}
-
-static inline int copy_ldt(mm_context_t *new, mm_context_t *old)
-{
- int err = alloc_ldt(new, old->size, 0);
- if (err < 0)
- return err;
- memcpy(new->ldt, old->ldt, old->size*LDT_ENTRY_SIZE);
- make_pages_readonly(new->ldt, (new->size * LDT_ENTRY_SIZE) /
- PAGE_SIZE);
- return 0;
-}
-
-/*
- * we do not have to muck with descriptors here, that is
- * done in switch_mm() as needed.
- */
-int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
-{
- struct mm_struct * old_mm;
- int retval = 0;
-
- init_MUTEX(&mm->context.sem);
- mm->context.size = 0;
- old_mm = current->mm;
- if (old_mm && old_mm->context.size > 0) {
- down(&old_mm->context.sem);
- retval = copy_ldt(&mm->context, &old_mm->context);
- up(&old_mm->context.sem);
- }
- return retval;
-}
-
-/*
- *
- * Don't touch the LDT register - we're already in the next thread.
- */
-void destroy_context(struct mm_struct *mm)
-{
- if (mm->context.size) {
- if (mm == current->active_mm)
- clear_LDT();
- make_pages_writable(mm->context.ldt,
- (mm->context.size * LDT_ENTRY_SIZE) /
- PAGE_SIZE);
- if (mm->context.size*LDT_ENTRY_SIZE > PAGE_SIZE)
- vfree(mm->context.ldt);
- else
- kfree(mm->context.ldt);
- mm->context.size = 0;
- }
-}
-
-static int read_ldt(void __user * ptr, unsigned long bytecount)
-{
- int err;
- unsigned long size;
- struct mm_struct * mm = current->mm;
-
- if (!mm->context.size)
- return 0;
- if (bytecount > LDT_ENTRY_SIZE*LDT_ENTRIES)
- bytecount = LDT_ENTRY_SIZE*LDT_ENTRIES;
-
- down(&mm->context.sem);
- size = mm->context.size*LDT_ENTRY_SIZE;
- if (size > bytecount)
- size = bytecount;
-
- err = 0;
- if (copy_to_user(ptr, mm->context.ldt, size))
- err = -EFAULT;
- up(&mm->context.sem);
- if (err < 0)
- goto error_return;
- if (size != bytecount) {
- /* zero-fill the rest */
- if (clear_user(ptr+size, bytecount-size) != 0) {
- err = -EFAULT;
- goto error_return;
- }
- }
- return bytecount;
-error_return:
- return err;
-}
-
-static int read_default_ldt(void __user * ptr, unsigned long bytecount)
-{
- /* Arbitrary number */
- /* x86-64 default LDT is all zeros */
- if (bytecount > 128)
- bytecount = 128;
- if (clear_user(ptr, bytecount))
- return -EFAULT;
- return bytecount;
-}
-
-static int write_ldt(void __user * ptr, unsigned long bytecount, int oldmode)
-{
- struct task_struct *me = current;
- struct mm_struct * mm = me->mm;
- __u32 entry_1, entry_2, *lp;
- unsigned long mach_lp;
- int error;
- struct user_desc ldt_info;
-
- error = -EINVAL;
- if (bytecount != sizeof(ldt_info))
- goto out;
- error = -EFAULT;
- if (copy_from_user(&ldt_info, ptr, bytecount))
- goto out;
-
- error = -EINVAL;
- if (ldt_info.entry_number >= LDT_ENTRIES)
- goto out;
- if (ldt_info.contents == 3) {
- if (oldmode)
- goto out;
- if (ldt_info.seg_not_present == 0)
- goto out;
- }
-
- down(&mm->context.sem);
- if (ldt_info.entry_number >= (unsigned)mm->context.size) {
- error = alloc_ldt(¤t->mm->context,
ldt_info.entry_number+1, 1);
- if (error < 0)
- goto out_unlock;
- }
-
- lp = (__u32 *) ((ldt_info.entry_number << 3) + (char *)
mm->context.ldt);
- mach_lp = arbitrary_virt_to_machine(lp);
-
- /* Allow LDTs to be cleared by the user. */
- if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
- if (oldmode || LDT_empty(&ldt_info)) {
- entry_1 = 0;
- entry_2 = 0;
- goto install;
- }
- }
-
- entry_1 = LDT_entry_a(&ldt_info);
- entry_2 = LDT_entry_b(&ldt_info);
- if (oldmode)
- entry_2 &= ~(1 << 20);
-
- /* Install the new entry ... */
-install:
- error = HYPERVISOR_update_descriptor(mach_lp, (unsigned long)((entry_1
| (unsigned long) entry_2 << 32)));
-
-out_unlock:
- up(&mm->context.sem);
-out:
- return error;
-}
-
-asmlinkage int sys_modify_ldt(int func, void __user *ptr, unsigned long
bytecount)
-{
- int ret = -ENOSYS;
-
- switch (func) {
- case 0:
- ret = read_ldt(ptr, bytecount);
- break;
- case 1:
- ret = write_ldt(ptr, bytecount, 1);
- break;
- case 2:
- ret = read_default_ldt(ptr, bytecount);
- break;
- case 0x11:
- ret = write_ldt(ptr, bytecount, 0);
- break;
- }
- return ret;
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/mpparse.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/mpparse.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,954 +0,0 @@
-/*
- * Intel Multiprocessor Specification 1.1 and 1.4
- * compliant MP-table parsing routines.
- *
- * (c) 1995 Alan Cox, Building #3 <alan@xxxxxxxxxx>
- * (c) 1998, 1999, 2000 Ingo Molnar <mingo@xxxxxxxxxx>
- *
- * Fixes
- * Erich Boleyn : MP v1.4 and additional changes.
- * Alan Cox : Added EBDA scanning
- * Ingo Molnar : various cleanups and rewrites
- * Maciej W. Rozycki: Bits for default MP configurations
- * Paul Diefenbaugh: Added full ACPI support
- */
-
-#include <linux/mm.h>
-#include <linux/irq.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/config.h>
-#include <linux/bootmem.h>
-#include <linux/smp_lock.h>
-#include <linux/kernel_stat.h>
-#include <linux/mc146818rtc.h>
-#include <linux/acpi.h>
-
-#include <asm/smp.h>
-#include <asm/mtrr.h>
-#include <asm/mpspec.h>
-#include <asm/pgalloc.h>
-#include <asm/io_apic.h>
-#include <asm/proto.h>
-
-/* Have we found an MP table */
-int smp_found_config;
-unsigned int __initdata maxcpus = NR_CPUS;
-
-int acpi_found_madt;
-
-/*
- * Various Linux-internal data structures created from the
- * MP-table.
- */
-int apic_version [MAX_APICS];
-unsigned char mp_bus_id_to_type [MAX_MP_BUSSES] = { [0 ... MAX_MP_BUSSES-1] =
-1 };
-int mp_bus_id_to_pci_bus [MAX_MP_BUSSES] = { [0 ... MAX_MP_BUSSES-1] = -1 };
-cpumask_t pci_bus_to_cpumask [256] = { [0 ... 255] = CPU_MASK_ALL };
-
-int mp_current_pci_id = 0;
-/* I/O APIC entries */
-struct mpc_config_ioapic mp_ioapics[MAX_IO_APICS];
-
-/* # of MP IRQ source entries */
-struct mpc_config_intsrc mp_irqs[MAX_IRQ_SOURCES];
-
-/* MP IRQ source entries */
-int mp_irq_entries;
-
-int nr_ioapics;
-int pic_mode;
-unsigned long mp_lapic_addr = 0;
-
-
-
-/* Processor that is doing the boot up */
-unsigned int boot_cpu_id = -1U;
-/* Internal processor count */
-static unsigned int num_processors = 0;
-
-/* Bitmask of physically existing CPUs */
-physid_mask_t phys_cpu_present_map = PHYSID_MASK_NONE;
-
-/* ACPI MADT entry parsing functions */
-#ifdef CONFIG_ACPI_BOOT
-extern struct acpi_boot_flags acpi_boot;
-#ifdef CONFIG_X86_LOCAL_APIC
-extern int acpi_parse_lapic (acpi_table_entry_header *header);
-extern int acpi_parse_lapic_addr_ovr (acpi_table_entry_header *header);
-extern int acpi_parse_lapic_nmi (acpi_table_entry_header *header);
-#endif /*CONFIG_X86_LOCAL_APIC*/
-#ifdef CONFIG_X86_IO_APIC
-extern int acpi_parse_ioapic (acpi_table_entry_header *header);
-#endif /*CONFIG_X86_IO_APIC*/
-#endif /*CONFIG_ACPI_BOOT*/
-
-u8 bios_cpu_apicid[NR_CPUS] = { [0 ... NR_CPUS-1] = BAD_APICID };
-
-
-/*
- * Intel MP BIOS table parsing routines:
- */
-
-/*
- * Checksum an MP configuration block.
- */
-
-static int __init mpf_checksum(unsigned char *mp, int len)
-{
- int sum = 0;
-
- while (len--)
- sum += *mp++;
-
- return sum & 0xFF;
-}
-
-#ifndef CONFIG_XEN
-static void __init MP_processor_info (struct mpc_config_processor *m)
-{
- int ver;
-
- if (!(m->mpc_cpuflag & CPU_ENABLED))
- return;
-
- printk(KERN_INFO "Processor #%d %d:%d APIC version %d\n",
- m->mpc_apicid,
- (m->mpc_cpufeature & CPU_FAMILY_MASK)>>8,
- (m->mpc_cpufeature & CPU_MODEL_MASK)>>4,
- m->mpc_apicver);
-
- if (m->mpc_cpuflag & CPU_BOOTPROCESSOR) {
- Dprintk(" Bootup CPU\n");
- boot_cpu_id = m->mpc_apicid;
- }
- if (num_processors >= NR_CPUS) {
- printk(KERN_WARNING "WARNING: NR_CPUS limit of %i reached."
- " Processor ignored.\n", NR_CPUS);
- return;
- }
- if (num_processors >= maxcpus) {
- printk(KERN_WARNING "WARNING: maxcpus limit of %i reached."
- " Processor ignored.\n", maxcpus);
- return;
- }
-
- num_processors++;
-
- if (m->mpc_apicid > MAX_APICS) {
- printk(KERN_ERR "Processor #%d INVALID. (Max ID: %d).\n",
- m->mpc_apicid, MAX_APICS);
- return;
- }
- ver = m->mpc_apicver;
-
- physid_set(m->mpc_apicid, phys_cpu_present_map);
- /*
- * Validate version
- */
- if (ver == 0x0) {
- printk(KERN_ERR "BIOS bug, APIC version is 0 for CPU#%d! fixing
up to 0x10. (tell your hw vendor)\n", m->mpc_apicid);
- ver = 0x10;
- }
- apic_version[m->mpc_apicid] = ver;
- bios_cpu_apicid[num_processors - 1] = m->mpc_apicid;
-}
-#else
-void __init MP_processor_info (struct mpc_config_processor *m)
-{
- num_processors++;
-}
-#endif /* CONFIG_XEN */
-
-static void __init MP_bus_info (struct mpc_config_bus *m)
-{
- char str[7];
-
- memcpy(str, m->mpc_bustype, 6);
- str[6] = 0;
- Dprintk("Bus #%d is %s\n", m->mpc_busid, str);
-
- if (strncmp(str, "ISA", 3) == 0) {
- mp_bus_id_to_type[m->mpc_busid] = MP_BUS_ISA;
- } else if (strncmp(str, "EISA", 4) == 0) {
- mp_bus_id_to_type[m->mpc_busid] = MP_BUS_EISA;
- } else if (strncmp(str, "PCI", 3) == 0) {
- mp_bus_id_to_type[m->mpc_busid] = MP_BUS_PCI;
- mp_bus_id_to_pci_bus[m->mpc_busid] = mp_current_pci_id;
- mp_current_pci_id++;
- } else if (strncmp(str, "MCA", 3) == 0) {
- mp_bus_id_to_type[m->mpc_busid] = MP_BUS_MCA;
- } else {
- printk(KERN_ERR "Unknown bustype %s\n", str);
- }
-}
-
-static void __init MP_ioapic_info (struct mpc_config_ioapic *m)
-{
- if (!(m->mpc_flags & MPC_APIC_USABLE))
- return;
-
- printk("I/O APIC #%d Version %d at 0x%X.\n",
- m->mpc_apicid, m->mpc_apicver, m->mpc_apicaddr);
- if (nr_ioapics >= MAX_IO_APICS) {
- printk(KERN_ERR "Max # of I/O APICs (%d) exceeded (found
%d).\n",
- MAX_IO_APICS, nr_ioapics);
- panic("Recompile kernel with bigger MAX_IO_APICS!.\n");
- }
- if (!m->mpc_apicaddr) {
- printk(KERN_ERR "WARNING: bogus zero I/O APIC address"
- " found in MP table, skipping!\n");
- return;
- }
- mp_ioapics[nr_ioapics] = *m;
- nr_ioapics++;
-}
-
-static void __init MP_intsrc_info (struct mpc_config_intsrc *m)
-{
- mp_irqs [mp_irq_entries] = *m;
- Dprintk("Int: type %d, pol %d, trig %d, bus %d,"
- " IRQ %02x, APIC ID %x, APIC INT %02x\n",
- m->mpc_irqtype, m->mpc_irqflag & 3,
- (m->mpc_irqflag >> 2) & 3, m->mpc_srcbus,
- m->mpc_srcbusirq, m->mpc_dstapic, m->mpc_dstirq);
- if (++mp_irq_entries == MAX_IRQ_SOURCES)
- panic("Max # of irq sources exceeded!!\n");
-}
-
-static void __init MP_lintsrc_info (struct mpc_config_lintsrc *m)
-{
- Dprintk("Lint: type %d, pol %d, trig %d, bus %d,"
- " IRQ %02x, APIC ID %x, APIC LINT %02x\n",
- m->mpc_irqtype, m->mpc_irqflag & 3,
- (m->mpc_irqflag >> 2) &3, m->mpc_srcbusid,
- m->mpc_srcbusirq, m->mpc_destapic, m->mpc_destapiclint);
- /*
- * Well it seems all SMP boards in existence
- * use ExtINT/LVT1 == LINT0 and
- * NMI/LVT2 == LINT1 - the following check
- * will show us if this assumptions is false.
- * Until then we do not have to add baggage.
- */
- if ((m->mpc_irqtype == mp_ExtINT) &&
- (m->mpc_destapiclint != 0))
- BUG();
- if ((m->mpc_irqtype == mp_NMI) &&
- (m->mpc_destapiclint != 1))
- BUG();
-}
-
-/*
- * Read/parse the MPC
- */
-
-static int __init smp_read_mpc(struct mp_config_table *mpc)
-{
- char str[16];
- int count=sizeof(*mpc);
- unsigned char *mpt=((unsigned char *)mpc)+count;
-
- if (memcmp(mpc->mpc_signature,MPC_SIGNATURE,4)) {
- printk("SMP mptable: bad signature [%c%c%c%c]!\n",
- mpc->mpc_signature[0],
- mpc->mpc_signature[1],
- mpc->mpc_signature[2],
- mpc->mpc_signature[3]);
- return 0;
- }
- if (mpf_checksum((unsigned char *)mpc,mpc->mpc_length)) {
- printk("SMP mptable: checksum error!\n");
- return 0;
- }
- if (mpc->mpc_spec!=0x01 && mpc->mpc_spec!=0x04) {
- printk(KERN_ERR "SMP mptable: bad table version (%d)!!\n",
- mpc->mpc_spec);
- return 0;
- }
- if (!mpc->mpc_lapic) {
- printk(KERN_ERR "SMP mptable: null local APIC address!\n");
- return 0;
- }
- memcpy(str,mpc->mpc_oem,8);
- str[8]=0;
- printk(KERN_INFO "OEM ID: %s ",str);
-
- memcpy(str,mpc->mpc_productid,12);
- str[12]=0;
- printk(KERN_INFO "Product ID: %s ",str);
-
- printk(KERN_INFO "APIC at: 0x%X\n",mpc->mpc_lapic);
-
- /* save the local APIC address, it might be non-default */
- if (!acpi_lapic)
- mp_lapic_addr = mpc->mpc_lapic;
-
- /*
- * Now process the configuration blocks.
- */
- while (count < mpc->mpc_length) {
- switch(*mpt) {
- case MP_PROCESSOR:
- {
- struct mpc_config_processor *m=
- (struct mpc_config_processor *)mpt;
- if (!acpi_lapic)
- MP_processor_info(m);
- mpt += sizeof(*m);
- count += sizeof(*m);
- break;
- }
- case MP_BUS:
- {
- struct mpc_config_bus *m=
- (struct mpc_config_bus *)mpt;
- MP_bus_info(m);
- mpt += sizeof(*m);
- count += sizeof(*m);
- break;
- }
- case MP_IOAPIC:
- {
- struct mpc_config_ioapic *m=
- (struct mpc_config_ioapic *)mpt;
- MP_ioapic_info(m);
- mpt+=sizeof(*m);
- count+=sizeof(*m);
- break;
- }
- case MP_INTSRC:
- {
- struct mpc_config_intsrc *m=
- (struct mpc_config_intsrc *)mpt;
-
- MP_intsrc_info(m);
- mpt+=sizeof(*m);
- count+=sizeof(*m);
- break;
- }
- case MP_LINTSRC:
- {
- struct mpc_config_lintsrc *m=
- (struct mpc_config_lintsrc *)mpt;
- MP_lintsrc_info(m);
- mpt+=sizeof(*m);
- count+=sizeof(*m);
- break;
- }
- }
- }
- clustered_apic_check();
- if (!num_processors)
- printk(KERN_ERR "SMP mptable: no processors registered!\n");
- return num_processors;
-}
-
-static int __init ELCR_trigger(unsigned int irq)
-{
- unsigned int port;
-
- port = 0x4d0 + (irq >> 3);
- return (inb(port) >> (irq & 7)) & 1;
-}
-
-static void __init construct_default_ioirq_mptable(int mpc_default_type)
-{
- struct mpc_config_intsrc intsrc;
- int i;
- int ELCR_fallback = 0;
-
- intsrc.mpc_type = MP_INTSRC;
- intsrc.mpc_irqflag = 0; /* conforming */
- intsrc.mpc_srcbus = 0;
- intsrc.mpc_dstapic = mp_ioapics[0].mpc_apicid;
-
- intsrc.mpc_irqtype = mp_INT;
-
- /*
- * If true, we have an ISA/PCI system with no IRQ entries
- * in the MP table. To prevent the PCI interrupts from being set up
- * incorrectly, we try to use the ELCR. The sanity check to see if
- * there is good ELCR data is very simple - IRQ0, 1, 2 and 13 can
- * never be level sensitive, so we simply see if the ELCR agrees.
- * If it does, we assume it's valid.
- */
- if (mpc_default_type == 5) {
- printk(KERN_INFO "ISA/PCI bus type with no IRQ information...
falling back to ELCR\n");
-
- if (ELCR_trigger(0) || ELCR_trigger(1) || ELCR_trigger(2) ||
ELCR_trigger(13))
- printk(KERN_ERR "ELCR contains invalid data... not
using ELCR\n");
- else {
- printk(KERN_INFO "Using ELCR to identify PCI
interrupts\n");
- ELCR_fallback = 1;
- }
- }
-
- for (i = 0; i < 16; i++) {
- switch (mpc_default_type) {
- case 2:
- if (i == 0 || i == 13)
- continue; /* IRQ0 & IRQ13 not connected */
- /* fall through */
- default:
- if (i == 2)
- continue; /* IRQ2 is never connected */
- }
-
- if (ELCR_fallback) {
- /*
- * If the ELCR indicates a level-sensitive interrupt,
we
- * copy that information over to the MP table in the
- * irqflag field (level sensitive, active high
polarity).
- */
- if (ELCR_trigger(i))
- intsrc.mpc_irqflag = 13;
- else
- intsrc.mpc_irqflag = 0;
- }
-
- intsrc.mpc_srcbusirq = i;
- intsrc.mpc_dstirq = i ? i : 2; /* IRQ0 to INTIN2 */
- MP_intsrc_info(&intsrc);
- }
-
- intsrc.mpc_irqtype = mp_ExtINT;
- intsrc.mpc_srcbusirq = 0;
- intsrc.mpc_dstirq = 0; /* 8259A to INTIN0 */
- MP_intsrc_info(&intsrc);
-}
-
-static inline void __init construct_default_ISA_mptable(int mpc_default_type)
-{
- struct mpc_config_processor processor;
- struct mpc_config_bus bus;
- struct mpc_config_ioapic ioapic;
- struct mpc_config_lintsrc lintsrc;
- int linttypes[2] = { mp_ExtINT, mp_NMI };
- int i;
-
- /*
- * local APIC has default address
- */
- mp_lapic_addr = APIC_DEFAULT_PHYS_BASE;
-
- /*
- * 2 CPUs, numbered 0 & 1.
- */
- processor.mpc_type = MP_PROCESSOR;
- /* Either an integrated APIC or a discrete 82489DX. */
- processor.mpc_apicver = mpc_default_type > 4 ? 0x10 : 0x01;
- processor.mpc_cpuflag = CPU_ENABLED;
- processor.mpc_cpufeature = (boot_cpu_data.x86 << 8) |
- (boot_cpu_data.x86_model << 4) |
- boot_cpu_data.x86_mask;
- processor.mpc_featureflag = boot_cpu_data.x86_capability[0];
- processor.mpc_reserved[0] = 0;
- processor.mpc_reserved[1] = 0;
- for (i = 0; i < 2; i++) {
- processor.mpc_apicid = i;
- MP_processor_info(&processor);
- }
-
- bus.mpc_type = MP_BUS;
- bus.mpc_busid = 0;
- switch (mpc_default_type) {
- default:
- printk(KERN_ERR "???\nUnknown standard configuration
%d\n",
- mpc_default_type);
- /* fall through */
- case 1:
- case 5:
- memcpy(bus.mpc_bustype, "ISA ", 6);
- break;
- case 2:
- case 6:
- case 3:
- memcpy(bus.mpc_bustype, "EISA ", 6);
- break;
- case 4:
- case 7:
- memcpy(bus.mpc_bustype, "MCA ", 6);
- }
- MP_bus_info(&bus);
- if (mpc_default_type > 4) {
- bus.mpc_busid = 1;
- memcpy(bus.mpc_bustype, "PCI ", 6);
- MP_bus_info(&bus);
- }
-
- ioapic.mpc_type = MP_IOAPIC;
- ioapic.mpc_apicid = 2;
- ioapic.mpc_apicver = mpc_default_type > 4 ? 0x10 : 0x01;
- ioapic.mpc_flags = MPC_APIC_USABLE;
- ioapic.mpc_apicaddr = 0xFEC00000;
- MP_ioapic_info(&ioapic);
-
- /*
- * We set up most of the low 16 IO-APIC pins according to MPS rules.
- */
- construct_default_ioirq_mptable(mpc_default_type);
-
- lintsrc.mpc_type = MP_LINTSRC;
- lintsrc.mpc_irqflag = 0; /* conforming */
- lintsrc.mpc_srcbusid = 0;
- lintsrc.mpc_srcbusirq = 0;
- lintsrc.mpc_destapic = MP_APIC_ALL;
- for (i = 0; i < 2; i++) {
- lintsrc.mpc_irqtype = linttypes[i];
- lintsrc.mpc_destapiclint = i;
- MP_lintsrc_info(&lintsrc);
- }
-}
-
-static struct intel_mp_floating *mpf_found;
-
-/*
- * Scan the memory blocks for an SMP configuration block.
- */
-void __init get_smp_config (void)
-{
- struct intel_mp_floating *mpf = mpf_found;
-
- /*
- * ACPI may be used to obtain the entire SMP configuration or just to
- * enumerate/configure processors (CONFIG_ACPI_BOOT). Note that
- * ACPI supports both logical (e.g. Hyper-Threading) and physical
- * processors, where MPS only supports physical.
- */
- if (acpi_lapic && acpi_ioapic) {
- printk(KERN_INFO "Using ACPI (MADT) for SMP configuration
information\n");
- return;
- }
- else if (acpi_lapic)
- printk(KERN_INFO "Using ACPI for processor (LAPIC)
configuration information\n");
-
- printk("Intel MultiProcessor Specification v1.%d\n",
mpf->mpf_specification);
- if (mpf->mpf_feature2 & (1<<7)) {
- printk(KERN_INFO " IMCR and PIC compatibility mode.\n");
- pic_mode = 1;
- } else {
- printk(KERN_INFO " Virtual Wire compatibility mode.\n");
- pic_mode = 0;
- }
-
- /*
- * Now see if we need to read further.
- */
- if (mpf->mpf_feature1 != 0) {
-
- printk(KERN_INFO "Default MP configuration #%d\n",
mpf->mpf_feature1);
- construct_default_ISA_mptable(mpf->mpf_feature1);
-
- } else if (mpf->mpf_physptr) {
-
- /*
- * Read the physical hardware table. Anything here will
- * override the defaults.
- */
- if (!smp_read_mpc(isa_bus_to_virt(mpf->mpf_physptr))) {
- smp_found_config = 0;
- printk(KERN_ERR "BIOS bug, MP table errors
detected!...\n");
- printk(KERN_ERR "... disabling SMP support. (tell your
hw vendor)\n");
- return;
- }
- /*
- * If there are no explicit MP IRQ entries, then we are
- * broken. We set up most of the low 16 IO-APIC pins to
- * ISA defaults and hope it will work.
- */
- if (!mp_irq_entries) {
- struct mpc_config_bus bus;
-
- printk(KERN_ERR "BIOS bug, no explicit IRQ entries,
using default mptable. (tell your hw vendor)\n");
-
- bus.mpc_type = MP_BUS;
- bus.mpc_busid = 0;
- memcpy(bus.mpc_bustype, "ISA ", 6);
- MP_bus_info(&bus);
-
- construct_default_ioirq_mptable(0);
- }
-
- } else
- BUG();
-
- printk(KERN_INFO "Processors: %d\n", num_processors);
- /*
- * Only use the first configuration found.
- */
-}
-
-static int __init smp_scan_config (unsigned long base, unsigned long length)
-{
- extern void __bad_mpf_size(void);
- unsigned int *bp = isa_bus_to_virt(base);
- struct intel_mp_floating *mpf;
-
- Dprintk("Scan SMP from %p for %ld bytes.\n", bp,length);
- if (sizeof(*mpf) != 16)
- __bad_mpf_size();
-
- while (length > 0) {
- mpf = (struct intel_mp_floating *)bp;
- if ((*bp == SMP_MAGIC_IDENT) &&
- (mpf->mpf_length == 1) &&
- !mpf_checksum((unsigned char *)bp, 16) &&
- ((mpf->mpf_specification == 1)
- || (mpf->mpf_specification == 4)) ) {
-
- smp_found_config = 1;
- mpf_found = mpf;
- return 1;
- }
- bp += 4;
- length -= 16;
- }
- return 0;
-}
-
-void __init find_intel_smp (void)
-{
- unsigned int address;
-
- /*
- * FIXME: Linux assumes you have 640K of base ram..
- * this continues the error...
- *
- * 1) Scan the bottom 1K for a signature
- * 2) Scan the top 1K of base RAM
- * 3) Scan the 64K of bios
- */
- if (smp_scan_config(0x0,0x400) ||
- smp_scan_config(639*0x400,0x400) ||
- smp_scan_config(0xF0000,0x10000))
- return;
- /*
- * If it is an SMP machine we should know now, unless the
- * configuration is in an EISA/MCA bus machine with an
- * extended bios data area.
- *
- * there is a real-mode segmented pointer pointing to the
- * 4K EBDA area at 0x40E, calculate and scan it here.
- *
- * NOTE! There are Linux loaders that will corrupt the EBDA
- * area, and as such this kind of SMP config may be less
- * trustworthy, simply because the SMP table may have been
- * stomped on during early boot. These loaders are buggy and
- * should be fixed.
- */
-
- address = *(unsigned short *)phys_to_virt(0x40E);
- address <<= 4;
- if (smp_scan_config(address, 0x1000))
- return;
-
- /* If we have come this far, we did not find an MP table */
- printk(KERN_INFO "No mptable found.\n");
-}
-
-/*
- * - Intel MP Configuration Table
- */
-void __init find_smp_config (void)
-{
-#ifdef CONFIG_X86_LOCAL_APIC
- find_intel_smp();
-#endif
-}
-
-
-/* --------------------------------------------------------------------------
- ACPI-based MP Configuration
- --------------------------------------------------------------------------
*/
-
-#ifdef CONFIG_ACPI_BOOT
-
-void __init mp_register_lapic_address (
- u64 address)
-{
-#ifndef CONFIG_XEN
- mp_lapic_addr = (unsigned long) address;
-
- if (boot_cpu_id == -1U)
- boot_cpu_id = GET_APIC_ID(apic_read(APIC_ID));
-
- Dprintk("Boot CPU = %d\n", boot_cpu_physical_apicid);
-#endif
-}
-
-
-void __init mp_register_lapic (
- u8 id,
- u8 enabled)
-{
- struct mpc_config_processor processor;
- int boot_cpu = 0;
-
- if (id >= MAX_APICS) {
- printk(KERN_WARNING "Processor #%d invalid (max %d)\n",
- id, MAX_APICS);
- return;
- }
-
- if (id == boot_cpu_physical_apicid)
- boot_cpu = 1;
-
-#ifndef CONFIG_XEN
- processor.mpc_type = MP_PROCESSOR;
- processor.mpc_apicid = id;
- processor.mpc_apicver = 0x10; /* TBD: lapic version */
- processor.mpc_cpuflag = (enabled ? CPU_ENABLED : 0);
- processor.mpc_cpuflag |= (boot_cpu ? CPU_BOOTPROCESSOR : 0);
- processor.mpc_cpufeature = (boot_cpu_data.x86 << 8) |
- (boot_cpu_data.x86_model << 4) | boot_cpu_data.x86_mask;
- processor.mpc_featureflag = boot_cpu_data.x86_capability[0];
- processor.mpc_reserved[0] = 0;
- processor.mpc_reserved[1] = 0;
-#endif
-
- MP_processor_info(&processor);
-}
-
-#ifdef CONFIG_X86_IO_APIC
-
-#define MP_ISA_BUS 0
-#define MP_MAX_IOAPIC_PIN 127
-
-struct mp_ioapic_routing {
- int apic_id;
- int gsi_start;
- int gsi_end;
- u32 pin_programmed[4];
-} mp_ioapic_routing[MAX_IO_APICS];
-
-
-static int mp_find_ioapic (
- int gsi)
-{
- int i = 0;
-
- /* Find the IOAPIC that manages this GSI. */
- for (i = 0; i < nr_ioapics; i++) {
- if ((gsi >= mp_ioapic_routing[i].gsi_start)
- && (gsi <= mp_ioapic_routing[i].gsi_end))
- return i;
- }
-
- printk(KERN_ERR "ERROR: Unable to locate IOAPIC for GSI %d\n", gsi);
-
- return -1;
-}
-
-
-void __init mp_register_ioapic (
- u8 id,
- u32 address,
- u32 gsi_base)
-{
- int idx = 0;
-
- if (nr_ioapics >= MAX_IO_APICS) {
- printk(KERN_ERR "ERROR: Max # of I/O APICs (%d) exceeded "
- "(found %d)\n", MAX_IO_APICS, nr_ioapics);
- panic("Recompile kernel with bigger MAX_IO_APICS!\n");
- }
- if (!address) {
- printk(KERN_ERR "WARNING: Bogus (zero) I/O APIC address"
- " found in MADT table, skipping!\n");
- return;
- }
-
- idx = nr_ioapics++;
-
- mp_ioapics[idx].mpc_type = MP_IOAPIC;
- mp_ioapics[idx].mpc_flags = MPC_APIC_USABLE;
- mp_ioapics[idx].mpc_apicaddr = address;
-
- mp_ioapics[idx].mpc_apicid = io_apic_get_unique_id(idx, id);
- mp_ioapics[idx].mpc_apicver = io_apic_get_version(idx);
-
- /*
- * Build basic IRQ lookup table to facilitate gsi->io_apic lookups
- * and to prevent reprogramming of IOAPIC pins (PCI IRQs).
- */
- mp_ioapic_routing[idx].apic_id = mp_ioapics[idx].mpc_apicid;
- mp_ioapic_routing[idx].gsi_start = gsi_base;
- mp_ioapic_routing[idx].gsi_end = gsi_base +
- io_apic_get_redir_entries(idx);
-
- printk(KERN_INFO "IOAPIC[%d]: apic_id %d, version %d, address 0x%x, "
- "GSI %d-%d\n", idx, mp_ioapics[idx].mpc_apicid,
- mp_ioapics[idx].mpc_apicver, mp_ioapics[idx].mpc_apicaddr,
- mp_ioapic_routing[idx].gsi_start,
- mp_ioapic_routing[idx].gsi_end);
-
- return;
-}
-
-
-void __init mp_override_legacy_irq (
- u8 bus_irq,
- u8 polarity,
- u8 trigger,
- u32 gsi)
-{
- struct mpc_config_intsrc intsrc;
- int ioapic = -1;
- int pin = -1;
-
- /*
- * Convert 'gsi' to 'ioapic.pin'.
- */
- ioapic = mp_find_ioapic(gsi);
- if (ioapic < 0)
- return;
- pin = gsi - mp_ioapic_routing[ioapic].gsi_start;
-
- /*
- * TBD: This check is for faulty timer entries, where the override
- * erroneously sets the trigger to level, resulting in a HUGE
- * increase of timer interrupts!
- */
- if ((bus_irq == 0) && (trigger == 3))
- trigger = 1;
-
- intsrc.mpc_type = MP_INTSRC;
- intsrc.mpc_irqtype = mp_INT;
- intsrc.mpc_irqflag = (trigger << 2) | polarity;
- intsrc.mpc_srcbus = MP_ISA_BUS;
- intsrc.mpc_srcbusirq = bus_irq; /* IRQ */
- intsrc.mpc_dstapic = mp_ioapics[ioapic].mpc_apicid; /* APIC ID */
- intsrc.mpc_dstirq = pin; /* INTIN# */
-
- Dprintk("Int: type %d, pol %d, trig %d, bus %d, irq %d, %d-%d\n",
- intsrc.mpc_irqtype, intsrc.mpc_irqflag & 3,
- (intsrc.mpc_irqflag >> 2) & 3, intsrc.mpc_srcbus,
- intsrc.mpc_srcbusirq, intsrc.mpc_dstapic, intsrc.mpc_dstirq);
-
- mp_irqs[mp_irq_entries] = intsrc;
- if (++mp_irq_entries == MAX_IRQ_SOURCES)
- panic("Max # of irq sources exceeded!\n");
-
- return;
-}
-
-
-void __init mp_config_acpi_legacy_irqs (void)
-{
- struct mpc_config_intsrc intsrc;
- int i = 0;
- int ioapic = -1;
-
- /*
- * Fabricate the legacy ISA bus (bus #31).
- */
- mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA;
- Dprintk("Bus #%d is ISA\n", MP_ISA_BUS);
-
- /*
- * Locate the IOAPIC that manages the ISA IRQs (0-15).
- */
- ioapic = mp_find_ioapic(0);
- if (ioapic < 0)
- return;
-
- intsrc.mpc_type = MP_INTSRC;
- intsrc.mpc_irqflag = 0; /* Conforming */
- intsrc.mpc_srcbus = MP_ISA_BUS;
- intsrc.mpc_dstapic = mp_ioapics[ioapic].mpc_apicid;
-
- /*
- * Use the default configuration for the IRQs 0-15. Unless
- * overridden by (MADT) interrupt source override entries.
- */
- for (i = 0; i < 16; i++) {
- int idx;
-
- for (idx = 0; idx < mp_irq_entries; idx++) {
- struct mpc_config_intsrc *irq = mp_irqs + idx;
-
- /* Do we already have a mapping for this ISA IRQ? */
- if (irq->mpc_srcbus == MP_ISA_BUS && irq->mpc_srcbusirq
== i)
- break;
-
- /* Do we already have a mapping for this IOAPIC pin */
- if ((irq->mpc_dstapic == intsrc.mpc_dstapic) &&
- (irq->mpc_dstirq == i))
- break;
- }
-
- if (idx != mp_irq_entries) {
- printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i);
- continue; /* IRQ already used */
- }
-
- intsrc.mpc_irqtype = mp_INT;
- intsrc.mpc_srcbusirq = i; /* Identity mapped */
- intsrc.mpc_dstirq = i;
-
- Dprintk("Int: type %d, pol %d, trig %d, bus %d, irq %d, "
- "%d-%d\n", intsrc.mpc_irqtype, intsrc.mpc_irqflag & 3,
- (intsrc.mpc_irqflag >> 2) & 3, intsrc.mpc_srcbus,
- intsrc.mpc_srcbusirq, intsrc.mpc_dstapic,
- intsrc.mpc_dstirq);
-
- mp_irqs[mp_irq_entries] = intsrc;
- if (++mp_irq_entries == MAX_IRQ_SOURCES)
- panic("Max # of irq sources exceeded!\n");
- }
-
- return;
-}
-
-int mp_register_gsi(u32 gsi, int edge_level, int active_high_low)
-{
- int ioapic = -1;
- int ioapic_pin = 0;
- int idx, bit = 0;
-
- if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
- return gsi;
-
-#ifdef CONFIG_ACPI_BUS
- /* Don't set up the ACPI SCI because it's already set up */
- if (acpi_fadt.sci_int == gsi)
- return gsi;
-#endif
-
- ioapic = mp_find_ioapic(gsi);
- if (ioapic < 0) {
- printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi);
- return gsi;
- }
-
- ioapic_pin = gsi - mp_ioapic_routing[ioapic].gsi_start;
-
- /*
- * Avoid pin reprogramming. PRTs typically include entries
- * with redundant pin->gsi mappings (but unique PCI devices);
- * we only program the IOAPIC on the first.
- */
- bit = ioapic_pin % 32;
- idx = (ioapic_pin < 32) ? 0 : (ioapic_pin / 32);
- if (idx > 3) {
- printk(KERN_ERR "Invalid reference to IOAPIC pin "
- "%d-%d\n", mp_ioapic_routing[ioapic].apic_id,
- ioapic_pin);
- return gsi;
- }
- if ((1<<bit) & mp_ioapic_routing[ioapic].pin_programmed[idx]) {
- Dprintk(KERN_DEBUG "Pin %d-%d already programmed\n",
- mp_ioapic_routing[ioapic].apic_id, ioapic_pin);
- return gsi;
- }
-
- mp_ioapic_routing[ioapic].pin_programmed[idx] |= (1<<bit);
-
- io_apic_set_pci_routing(ioapic, ioapic_pin, gsi,
- edge_level == ACPI_EDGE_SENSITIVE ? 0 : 1,
- active_high_low == ACPI_ACTIVE_HIGH ? 0 : 1);
- return gsi;
-}
-
-#endif /*CONFIG_X86_IO_APIC*/
-#endif /*CONFIG_ACPI_BOOT*/
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/pci-dma.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/pci-dma.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,205 +0,0 @@
-/*
- * Dynamic DMA mapping support.
- */
-
-#include <linux/types.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/pci.h>
-#include <linux/module.h>
-#include <asm/io.h>
-#include <asm-xen/balloon.h>
-
-/* Map a set of buffers described by scatterlist in streaming
- * mode for DMA. This is the scatter-gather version of the
- * above pci_map_single interface. Here the scatter gather list
- * elements are each tagged with the appropriate dma address
- * and length. They are obtained via sg_dma_{address,length}(SG).
- *
- * NOTE: An implementation may be able to use a smaller number of
- * DMA address/length pairs than there are SG table elements.
- * (for example via virtual mapping capabilities)
- * The routine returns the number of addr/length pairs actually
- * used, at most nents.
- *
- * Device ownership issues as mentioned above for pci_map_single are
- * the same here.
- */
-int dma_map_sg(struct device *hwdev, struct scatterlist *sg,
- int nents, int direction)
-{
- int i;
-
- BUG_ON(direction == DMA_NONE);
- for (i = 0; i < nents; i++ ) {
- struct scatterlist *s = &sg[i];
- BUG_ON(!s->page);
- s->dma_address = virt_to_bus(page_address(s->page) +s->offset);
- s->dma_length = s->length;
- }
- return nents;
-}
-
-EXPORT_SYMBOL(dma_map_sg);
-
-/* Unmap a set of streaming mode DMA translations.
- * Again, cpu read rules concerning calls here are the same as for
- * pci_unmap_single() above.
- */
-void dma_unmap_sg(struct device *dev, struct scatterlist *sg,
- int nents, int dir)
-{
- int i;
- for (i = 0; i < nents; i++) {
- struct scatterlist *s = &sg[i];
- BUG_ON(s->page == NULL);
- BUG_ON(s->dma_address == 0);
- dma_unmap_single(dev, s->dma_address, s->dma_length, dir);
- }
-}
-
-EXPORT_SYMBOL(dma_unmap_sg);
-
-struct dma_coherent_mem {
- void *virt_base;
- u32 device_base;
- int size;
- int flags;
- unsigned long *bitmap;
-};
-
-void *dma_alloc_coherent(struct device *dev, size_t size,
- dma_addr_t *dma_handle, unsigned gfp)
-{
- void *ret;
- unsigned int order = get_order(size);
- unsigned long vstart;
-
- struct dma_coherent_mem *mem = dev ? dev->dma_mem : NULL;
-
- /* ignore region specifiers */
- gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
-
- if (mem) {
- int page = bitmap_find_free_region(mem->bitmap, mem->size,
- order);
- if (page >= 0) {
- *dma_handle = mem->device_base + (page << PAGE_SHIFT);
- ret = mem->virt_base + (page << PAGE_SHIFT);
- memset(ret, 0, size);
- return ret;
- }
- if (mem->flags & DMA_MEMORY_EXCLUSIVE)
- return NULL;
- }
-
- if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
- gfp |= GFP_DMA;
-
- vstart = __get_free_pages(gfp, order);
- ret = (void *)vstart;
- if (ret == NULL)
- return ret;
-
- xen_contig_memory(vstart, order);
-
- memset(ret, 0, size);
- *dma_handle = virt_to_bus(ret);
-
- return ret;
-}
-EXPORT_SYMBOL(dma_alloc_coherent);
-
-void dma_free_coherent(struct device *dev, size_t size,
- void *vaddr, dma_addr_t dma_handle)
-{
- struct dma_coherent_mem *mem = dev ? dev->dma_mem : NULL;
- int order = get_order(size);
-
- if (mem && vaddr >= mem->virt_base && vaddr < (mem->virt_base +
(mem->size << PAGE_SHIFT))) {
- int page = (vaddr - mem->virt_base) >> PAGE_SHIFT;
-
- bitmap_release_region(mem->bitmap, page, order);
- } else
- free_pages((unsigned long)vaddr, order);
-}
-EXPORT_SYMBOL(dma_free_coherent);
-
-#if 0
-int dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
- dma_addr_t device_addr, size_t size, int flags)
-{
- void __iomem *mem_base;
- int pages = size >> PAGE_SHIFT;
- int bitmap_size = (pages + 31)/32;
-
- if ((flags & (DMA_MEMORY_MAP | DMA_MEMORY_IO)) == 0)
- goto out;
- if (!size)
- goto out;
- if (dev->dma_mem)
- goto out;
-
- /* FIXME: this routine just ignores DMA_MEMORY_INCLUDES_CHILDREN */
-
- mem_base = ioremap(bus_addr, size);
- if (!mem_base)
- goto out;
-
- dev->dma_mem = kmalloc(sizeof(struct dma_coherent_mem), GFP_KERNEL);
- if (!dev->dma_mem)
- goto out;
- memset(dev->dma_mem, 0, sizeof(struct dma_coherent_mem));
- dev->dma_mem->bitmap = kmalloc(bitmap_size, GFP_KERNEL);
- if (!dev->dma_mem->bitmap)
- goto free1_out;
- memset(dev->dma_mem->bitmap, 0, bitmap_size);
-
- dev->dma_mem->virt_base = mem_base;
- dev->dma_mem->device_base = device_addr;
- dev->dma_mem->size = pages;
- dev->dma_mem->flags = flags;
-
- if (flags & DMA_MEMORY_MAP)
- return DMA_MEMORY_MAP;
-
- return DMA_MEMORY_IO;
-
- free1_out:
- kfree(dev->dma_mem->bitmap);
- out:
- return 0;
-}
-EXPORT_SYMBOL(dma_declare_coherent_memory);
-
-void dma_release_declared_memory(struct device *dev)
-{
- struct dma_coherent_mem *mem = dev->dma_mem;
-
- if(!mem)
- return;
- dev->dma_mem = NULL;
- iounmap(mem->virt_base);
- kfree(mem->bitmap);
- kfree(mem);
-}
-EXPORT_SYMBOL(dma_release_declared_memory);
-
-void *dma_mark_declared_memory_occupied(struct device *dev,
- dma_addr_t device_addr, size_t size)
-{
- struct dma_coherent_mem *mem = dev->dma_mem;
- int pages = (size + (device_addr & ~PAGE_MASK) + PAGE_SIZE - 1) >>
PAGE_SHIFT;
- int pos, err;
-
- if (!mem)
- return ERR_PTR(-EINVAL);
-
- pos = (device_addr - mem->device_base) >> PAGE_SHIFT;
- err = bitmap_allocate_region(mem->bitmap, pos, get_order(pages));
- if (err != 0)
- return ERR_PTR(err);
- return mem->virt_base + (pos << PAGE_SHIFT);
-}
-EXPORT_SYMBOL(dma_mark_declared_memory_occupied);
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/pci-nommu.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/pci-nommu.c Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,96 +0,0 @@
-/* Fallback functions when the main IOMMU code is not compiled in. This
- code is roughly equivalent to i386. */
-#include <linux/mm.h>
-#include <linux/init.h>
-#include <linux/pci.h>
-#include <linux/string.h>
-#include <asm/proto.h>
-#include <asm/processor.h>
-
-int iommu_merge = 0;
-EXPORT_SYMBOL(iommu_merge);
-
-dma_addr_t bad_dma_address;
-EXPORT_SYMBOL(bad_dma_address);
-
-int iommu_bio_merge = 0;
-EXPORT_SYMBOL(iommu_bio_merge);
-
-int iommu_sac_force = 0;
-EXPORT_SYMBOL(iommu_sac_force);
-
-#if 0
-/*
- * Dummy IO MMU functions
- */
-
-void *dma_alloc_coherent(struct device *hwdev, size_t size,
- dma_addr_t *dma_handle, unsigned gfp)
-{
- void *ret;
- u64 mask;
- int order = get_order(size);
-
- if (hwdev)
- mask = hwdev->coherent_dma_mask & *hwdev->dma_mask;
- else
- mask = 0xffffffff;
- for (;;) {
- ret = (void *)__get_free_pages(gfp, order);
- if (ret == NULL)
- return NULL;
- *dma_handle = virt_to_bus(ret);
- if ((*dma_handle & ~mask) == 0)
- break;
- free_pages((unsigned long)ret, order);
- if (gfp & GFP_DMA)
- return NULL;
- gfp |= GFP_DMA;
- }
-
- memset(ret, 0, size);
- return ret;
-}
-EXPORT_SYMBOL(dma_alloc_coherent);
-
-void dma_free_coherent(struct device *hwdev, size_t size,
- void *vaddr, dma_addr_t dma_handle)
-{
- free_pages((unsigned long)vaddr, get_order(size));
-}
-EXPORT_SYMBOL(dma_free_coherent);
-#endif
-
-int dma_supported(struct device *hwdev, u64 mask)
-{
- /*
- * we fall back to GFP_DMA when the mask isn't all 1s,
- * so we can't guarantee allocations that must be
- * within a tighter range than GFP_DMA..
- * RED-PEN this won't work for pci_map_single. Caller has to
- * use GFP_DMA in the first place.
- */
- if (mask < 0x00ffffff)
- return 0;
-
- return 1;
-}
-EXPORT_SYMBOL(dma_supported);
-
-int dma_get_cache_alignment(void)
-{
- return boot_cpu_data.x86_clflush_size;
-}
-EXPORT_SYMBOL(dma_get_cache_alignment);
-
-static int __init check_ram(void)
-{
- if (end_pfn >= 0xffffffff>>PAGE_SHIFT) {
- printk(
- KERN_ERR "WARNING more than 4GB of memory but IOMMU not
compiled in.\n"
- KERN_ERR "WARNING 32bit PCI may malfunction.\n");
- }
- return 0;
-}
-__initcall(check_ram);
-
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/process.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/process.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,725 +0,0 @@
-/*
- * linux/arch/x86-64/kernel/process.c
- *
- * Copyright (C) 1995 Linus Torvalds
- *
- * Pentium III FXSR, SSE support
- * Gareth Hughes <gareth@xxxxxxxxxxx>, May 2000
- *
- * X86-64 port
- * Andi Kleen.
- *
- * $Id: process.c,v 1.38 2002/01/15 10:08:03 ak Exp $
- *
- * Jun Nakajima <jun.nakajima@xxxxxxxxx>
- * Modified for Xen
- */
-
-/*
- * This file handles the architecture-dependent parts of process handling..
- */
-
-#include <stdarg.h>
-
-#include <linux/cpu.h>
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/elfcore.h>
-#include <linux/smp.h>
-#include <linux/slab.h>
-#include <linux/user.h>
-#include <linux/module.h>
-#include <linux/a.out.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/irq.h>
-#include <linux/ptrace.h>
-#include <linux/utsname.h>
-
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/processor.h>
-#include <asm/i387.h>
-#include <asm/mmu_context.h>
-#include <asm/pda.h>
-#include <asm/prctl.h>
-#include <asm/kdebug.h>
-#include <asm-xen/xen-public/dom0_ops.h>
-#include <asm-xen/xen-public/physdev.h>
-#include <asm/desc.h>
-#include <asm/proto.h>
-#include <asm/hardirq.h>
-#include <asm/ia32.h>
-
-asmlinkage extern void ret_from_fork(void);
-
-unsigned long kernel_thread_flags = CLONE_VM | CLONE_UNTRACED;
-
-atomic_t hlt_counter = ATOMIC_INIT(0);
-
-unsigned long boot_option_idle_override = 0;
-EXPORT_SYMBOL(boot_option_idle_override);
-
-/*
- * Powermanagement idle function, if any..
- */
-void (*pm_idle)(void);
-static cpumask_t cpu_idle_map;
-
-void disable_hlt(void)
-{
- atomic_inc(&hlt_counter);
-}
-
-EXPORT_SYMBOL(disable_hlt);
-
-void enable_hlt(void)
-{
- atomic_dec(&hlt_counter);
-}
-
-EXPORT_SYMBOL(enable_hlt);
-
-/* XXX XEN doesn't use default_idle(), poll_idle(). Use xen_idle() instead. */
-extern void stop_hz_timer(void);
-extern void start_hz_timer(void);
-void xen_idle(void)
-{
- local_irq_disable();
-
- if (need_resched()) {
- local_irq_enable();
- } else {
- stop_hz_timer();
- HYPERVISOR_block(); /* implicit local_irq_enable() */
- start_hz_timer();
- }
-}
-
-#ifdef CONFIG_HOTPLUG_CPU
-#include <asm/nmi.h>
-/* We don't actually take CPU down, just spin without interrupts. */
-static inline void play_dead(void)
-{
- /* Ack it */
- __get_cpu_var(cpu_state) = CPU_DEAD;
-
- /* We shouldn't have to disable interrupts while dead, but
- * some interrupts just don't seem to go away, and this makes
- * it "work" for testing purposes. */
- /* Death loop */
- while (__get_cpu_var(cpu_state) != CPU_UP_PREPARE)
- HYPERVISOR_yield();
-
- local_irq_disable();
- __flush_tlb_all();
- cpu_set(smp_processor_id(), cpu_online_map);
- local_irq_enable();
-}
-#else
-static inline void play_dead(void)
-{
- BUG();
-}
-#endif /* CONFIG_HOTPLUG_CPU */
-
-/*
- * The idle thread. There's no useful work to be
- * done, so just try to conserve power and have a
- * low exit latency (ie sit in a loop waiting for
- * somebody to say that they'd like to reschedule)
- */
-void cpu_idle (void)
-{
- int cpu = smp_processor_id();
-
- /* endless idle loop with no priority at all */
- while (1) {
- while (!need_resched()) {
- if (cpu_isset(cpu, cpu_idle_map))
- cpu_clear(cpu, cpu_idle_map);
- rmb();
-
- if (cpu_is_offline(cpu))
- play_dead();
-
- __IRQ_STAT(cpu,idle_timestamp) = jiffies;
- xen_idle();
- }
- schedule();
- }
-}
-
-void cpu_idle_wait(void)
-{
- int cpu;
- cpumask_t map;
-
- for_each_online_cpu(cpu)
- cpu_set(cpu, cpu_idle_map);
-
- wmb();
- do {
- ssleep(1);
- cpus_and(map, cpu_idle_map, cpu_online_map);
- } while (!cpus_empty(map));
-}
-EXPORT_SYMBOL_GPL(cpu_idle_wait);
-
-/* XXX XEN doesn't use mwait_idle(), select_idle_routine(), idle_setup(). */
-/* Always use xen_idle() instead. */
-void __init select_idle_routine(const struct cpuinfo_x86 *c) {}
-
-/* Prints also some state that isn't saved in the pt_regs */
-void __show_regs(struct pt_regs * regs)
-{
- unsigned long fs, gs, shadowgs;
- unsigned int fsindex,gsindex;
- unsigned int ds,cs,es;
-
- printk("\n");
- print_modules();
- printk("Pid: %d, comm: %.20s %s %s\n",
- current->pid, current->comm, print_tainted(),
system_utsname.release);
- printk("RIP: %04lx:[<%016lx>] ", regs->cs & 0xffff, regs->rip);
- printk_address(regs->rip);
- printk("\nRSP: %04lx:%016lx EFLAGS: %08lx\n", regs->ss, regs->rsp,
regs->eflags);
- printk("RAX: %016lx RBX: %016lx RCX: %016lx\n",
- regs->rax, regs->rbx, regs->rcx);
- printk("RDX: %016lx RSI: %016lx RDI: %016lx\n",
- regs->rdx, regs->rsi, regs->rdi);
- printk("RBP: %016lx R08: %016lx R09: %016lx\n",
- regs->rbp, regs->r8, regs->r9);
- printk("R10: %016lx R11: %016lx R12: %016lx\n",
- regs->r10, regs->r11, regs->r12);
- printk("R13: %016lx R14: %016lx R15: %016lx\n",
- regs->r13, regs->r14, regs->r15);
-
- asm("movl %%ds,%0" : "=r" (ds));
- asm("movl %%cs,%0" : "=r" (cs));
- asm("movl %%es,%0" : "=r" (es));
- asm("movl %%fs,%0" : "=r" (fsindex));
- asm("movl %%gs,%0" : "=r" (gsindex));
-
- rdmsrl(MSR_FS_BASE, fs);
- rdmsrl(MSR_GS_BASE, gs);
- rdmsrl(MSR_KERNEL_GS_BASE, shadowgs);
-
- printk("FS: %016lx(%04x) GS:%016lx(%04x) knlGS:%016lx\n",
- fs,fsindex,gs,gsindex,shadowgs);
- printk("CS: %04x DS: %04x ES: %04x\n", cs, ds, es);
-
-}
-
-void show_regs(struct pt_regs *regs)
-{
- __show_regs(regs);
- show_trace(®s->rsp);
-}
-
-/*
- * Free current thread data structures etc..
- */
-void exit_thread(void)
-{
- struct task_struct *me = current;
- struct thread_struct *t = &me->thread;
- if (me->thread.io_bitmap_ptr) {
- struct tss_struct *tss = &per_cpu(init_tss, get_cpu());
-
- kfree(t->io_bitmap_ptr);
- t->io_bitmap_ptr = NULL;
- /*
- * Careful, clear this in the TSS too:
- */
- memset(tss->io_bitmap, 0xff, t->io_bitmap_max);
- t->io_bitmap_max = 0;
- put_cpu();
- }
-}
-
-void load_gs_index(unsigned gs)
-{
- HYPERVISOR_set_segment_base(SEGBASE_GS_USER_SEL, gs);
-}
-
-void flush_thread(void)
-{
- struct task_struct *tsk = current;
- struct thread_info *t = current_thread_info();
-
- if (t->flags & _TIF_ABI_PENDING)
- t->flags ^= (_TIF_ABI_PENDING | _TIF_IA32);
-
- tsk->thread.debugreg0 = 0;
- tsk->thread.debugreg1 = 0;
- tsk->thread.debugreg2 = 0;
- tsk->thread.debugreg3 = 0;
- tsk->thread.debugreg6 = 0;
- tsk->thread.debugreg7 = 0;
- memset(tsk->thread.tls_array, 0, sizeof(tsk->thread.tls_array));
- /*
- * Forget coprocessor state..
- */
- clear_fpu(tsk);
- clear_used_math();
-}
-
-void release_thread(struct task_struct *dead_task)
-{
- if (dead_task->mm) {
- if (dead_task->mm->context.size) {
- printk("WARNING: dead process %8s still has LDT?
<%p/%d>\n",
- dead_task->comm,
- dead_task->mm->context.ldt,
- dead_task->mm->context.size);
- BUG();
- }
- }
-}
-
-static inline void set_32bit_tls(struct task_struct *t, int tls, u32 addr)
-{
- struct user_desc ud = {
- .base_addr = addr,
- .limit = 0xfffff,
- .contents = (3 << 3), /* user */
- .seg_32bit = 1,
- .limit_in_pages = 1,
- .useable = 1,
- };
- struct n_desc_struct *desc = (void *)t->thread.tls_array;
- desc += tls;
- desc->a = LDT_entry_a(&ud);
- desc->b = LDT_entry_b(&ud);
-}
-
-static inline u32 read_32bit_tls(struct task_struct *t, int tls)
-{
- struct desc_struct *desc = (void *)t->thread.tls_array;
- desc += tls;
- return desc->base0 |
- (((u32)desc->base1) << 16) |
- (((u32)desc->base2) << 24);
-}
-
-/*
- * This gets called before we allocate a new thread and copy
- * the current task into it.
- */
-void prepare_to_copy(struct task_struct *tsk)
-{
- unlazy_fpu(tsk);
-}
-
-int copy_thread(int nr, unsigned long clone_flags, unsigned long rsp,
- unsigned long unused,
- struct task_struct * p, struct pt_regs * regs)
-{
- int err;
- struct pt_regs * childregs;
- struct task_struct *me = current;
-
- childregs = ((struct pt_regs *) (THREAD_SIZE + (unsigned long)
p->thread_info)) - 1;
-
- *childregs = *regs;
-
- childregs->rax = 0;
- childregs->rsp = rsp;
- if (rsp == ~0UL) {
- childregs->rsp = (unsigned long)childregs;
- }
-
- p->thread.rsp = (unsigned long) childregs;
- p->thread.rsp0 = (unsigned long) (childregs+1);
- p->thread.userrsp = me->thread.userrsp;
-
- set_ti_thread_flag(p->thread_info, TIF_FORK);
-
- p->thread.fs = me->thread.fs;
- p->thread.gs = me->thread.gs;
-
- asm("movl %%gs,%0" : "=m" (p->thread.gsindex));
- asm("movl %%fs,%0" : "=m" (p->thread.fsindex));
- asm("movl %%es,%0" : "=m" (p->thread.es));
- asm("movl %%ds,%0" : "=m" (p->thread.ds));
-
- if (unlikely(me->thread.io_bitmap_ptr != NULL)) {
- p->thread.io_bitmap_ptr = kmalloc(IO_BITMAP_BYTES, GFP_KERNEL);
- if (!p->thread.io_bitmap_ptr) {
- p->thread.io_bitmap_max = 0;
- return -ENOMEM;
- }
- memcpy(p->thread.io_bitmap_ptr, me->thread.io_bitmap_ptr,
IO_BITMAP_BYTES);
- }
-
- /*
- * Set a new TLS for the child thread?
- */
- if (clone_flags & CLONE_SETTLS) {
-#ifdef CONFIG_IA32_EMULATION
- if (test_thread_flag(TIF_IA32))
- err = ia32_child_tls(p, childregs);
- else
-#endif
- err = do_arch_prctl(p, ARCH_SET_FS, childregs->r8);
- if (err)
- goto out;
- }
- p->thread.io_pl = current->thread.io_pl;
-
- err = 0;
-out:
- if (err && p->thread.io_bitmap_ptr) {
- kfree(p->thread.io_bitmap_ptr);
- p->thread.io_bitmap_max = 0;
- }
- return err;
-}
-
-/*
- * This special macro can be used to load a debugging register
- */
-#define loaddebug(thread,register) \
- HYPERVISOR_set_debugreg((register), \
- (thread->debugreg ## register))
-
-
-static inline void __save_init_fpu( struct task_struct *tsk )
-{
- asm volatile( "rex64 ; fxsave %0 ; fnclex"
- : "=m" (tsk->thread.i387.fxsave));
- tsk->thread_info->status &= ~TS_USEDFPU;
-}
-
-/*
- * switch_to(x,y) should switch tasks from x to y.
- *
- * This could still be optimized:
- * - fold all the options into a flag word and test it with a single test.
- * - could test fs/gs bitsliced
- */
-struct task_struct *__switch_to(struct task_struct *prev_p, struct task_struct
*next_p)
-{
- struct thread_struct *prev = &prev_p->thread,
- *next = &next_p->thread;
- int cpu = smp_processor_id();
- struct tss_struct *tss = &per_cpu(init_tss, cpu);
- physdev_op_t iopl_op, iobmp_op;
- multicall_entry_t _mcl[8], *mcl = _mcl;
-
- /*
- * This is basically '__unlazy_fpu', except that we queue a
- * multicall to indicate FPU task switch, rather than
- * synchronously trapping to Xen.
- */
- if (prev_p->thread_info->status & TS_USEDFPU) {
- __save_init_fpu(prev_p); /* _not_ save_init_fpu() */
- mcl->op = __HYPERVISOR_fpu_taskswitch;
- mcl->args[0] = 1;
- mcl++;
- }
-
- /*
- * Reload esp0, LDT and the page table pointer:
- */
- tss->rsp0 = next->rsp0;
- mcl->op = __HYPERVISOR_stack_switch;
- mcl->args[0] = __KERNEL_DS;
- mcl->args[1] = tss->rsp0;
- mcl++;
-
- /*
- * Load the per-thread Thread-Local Storage descriptor.
- * This is load_TLS(next, cpu) with multicalls.
- */
-#define C(i) do { \
- if (unlikely(next->tls_array[i] != prev->tls_array[i])) { \
- mcl->op = __HYPERVISOR_update_descriptor; \
- mcl->args[0] = virt_to_machine(&get_cpu_gdt_table(cpu) \
- [GDT_ENTRY_TLS_MIN + i]); \
- mcl->args[1] = next->tls_array[i]; \
- mcl++; \
- } \
-} while (0)
- C(0); C(1); C(2);
-#undef C
-
- if (unlikely(prev->io_pl != next->io_pl)) {
- iopl_op.cmd = PHYSDEVOP_SET_IOPL;
- iopl_op.u.set_iopl.iopl = next->io_pl;
- mcl->op = __HYPERVISOR_physdev_op;
- mcl->args[0] = (unsigned long)&iopl_op;
- mcl++;
- }
-
- if (unlikely(prev->io_bitmap_ptr || next->io_bitmap_ptr)) {
- iobmp_op.cmd =
- PHYSDEVOP_SET_IOBITMAP;
- iobmp_op.u.set_iobitmap.bitmap =
- (unsigned long)next->io_bitmap_ptr;
- iobmp_op.u.set_iobitmap.nr_ports =
- next->io_bitmap_ptr ? IO_BITMAP_BITS : 0;
- mcl->op = __HYPERVISOR_physdev_op;
- mcl->args[0] = (unsigned long)&iobmp_op;
- mcl++;
- }
-
- (void)HYPERVISOR_multicall(_mcl, mcl - _mcl);
- /*
- * Switch DS and ES.
- * This won't pick up thread selector changes, but I guess that is ok.
- */
- if (unlikely(next->es))
- loadsegment(es, next->es);
-
- if (unlikely(next->ds))
- loadsegment(ds, next->ds);
-
- /*
- * Switch FS and GS.
- */
- if (unlikely(next->fsindex))
- loadsegment(fs, next->fsindex);
-
- if (next->fs)
- HYPERVISOR_set_segment_base(SEGBASE_FS, next->fs);
-
- if (unlikely(next->gsindex))
- load_gs_index(next->gsindex);
-
- if (next->gs)
- HYPERVISOR_set_segment_base(SEGBASE_GS_USER, next->gs);
-
- /*
- * Switch the PDA context.
- */
- prev->userrsp = read_pda(oldrsp);
- write_pda(oldrsp, next->userrsp);
- write_pda(pcurrent, next_p);
- write_pda(kernelstack, (unsigned long)next_p->thread_info + THREAD_SIZE
- PDA_STACKOFFSET);
-
- /*
- * Now maybe reload the debug registers
- */
- if (unlikely(next->debugreg7)) {
- loaddebug(next, 0);
- loaddebug(next, 1);
- loaddebug(next, 2);
- loaddebug(next, 3);
- /* no 4 and 5 */
- loaddebug(next, 6);
- loaddebug(next, 7);
- }
-
- return prev_p;
-}
-
-/*
- * sys_execve() executes a new program.
- */
-asmlinkage
-long sys_execve(char __user *name, char __user * __user *argv,
- char __user * __user *envp, struct pt_regs regs)
-{
- long error;
- char * filename;
-
- filename = getname(name);
- error = PTR_ERR(filename);
- if (IS_ERR(filename))
- return error;
- error = do_execve(filename, argv, envp, ®s);
- if (error == 0) {
- task_lock(current);
- current->ptrace &= ~PT_DTRACE;
- task_unlock(current);
- }
- putname(filename);
- return error;
-}
-
-void set_personality_64bit(void)
-{
- /* inherit personality from parent */
-
- /* Make sure to be in 64bit mode */
- clear_thread_flag(TIF_IA32);
-
- /* TBD: overwrites user setup. Should have two bits.
- But 64bit processes have always behaved this way,
- so it's not too bad. The main problem is just that
- 32bit childs are affected again. */
- current->personality &= ~READ_IMPLIES_EXEC;
-}
-
-asmlinkage long sys_fork(struct pt_regs *regs)
-{
- return do_fork(SIGCHLD, regs->rsp, regs, 0, NULL, NULL);
-}
-
-asmlinkage long sys_clone(unsigned long clone_flags, unsigned long newsp, void
__user *parent_tid, void __user *child_tid, struct pt_regs *regs)
-{
- if (!newsp)
- newsp = regs->rsp;
- return do_fork(clone_flags, newsp, regs, 0, parent_tid, child_tid);
-}
-
-/*
- * This is trivial, and on the face of it looks like it
- * could equally well be done in user mode.
- *
- * Not so, for quite unobvious reasons - register pressure.
- * In user mode vfork() cannot have a stack frame, and if
- * done by calling the "clone()" system call directly, you
- * do not have enough call-clobbered registers to hold all
- * the information you need.
- */
-asmlinkage long sys_vfork(struct pt_regs *regs)
-{
- return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, regs->rsp, regs, 0,
- NULL, NULL);
-}
-
-unsigned long get_wchan(struct task_struct *p)
-{
- unsigned long stack;
- u64 fp,rip;
- int count = 0;
-
- if (!p || p == current || p->state==TASK_RUNNING)
- return 0;
- stack = (unsigned long)p->thread_info;
- if (p->thread.rsp < stack || p->thread.rsp > stack+THREAD_SIZE)
- return 0;
- fp = *(u64 *)(p->thread.rsp);
- do {
- if (fp < (unsigned long)stack || fp > (unsigned
long)stack+THREAD_SIZE)
- return 0;
- rip = *(u64 *)(fp+8);
- if (!in_sched_functions(rip))
- return rip;
- fp = *(u64 *)fp;
- } while (count++ < 16);
- return 0;
-}
-
-long do_arch_prctl(struct task_struct *task, int code, unsigned long addr)
-{
- int ret = 0;
- int doit = task == current;
- int cpu;
-
- switch (code) {
- case ARCH_SET_GS:
- if (addr >= TASK_SIZE)
- return -EPERM;
- cpu = get_cpu();
- /* handle small bases via the GDT because that's faster to
- switch. */
- if (addr <= 0xffffffff) {
- set_32bit_tls(task, GS_TLS, addr);
- if (doit) {
- load_TLS(&task->thread, cpu);
- load_gs_index(GS_TLS_SEL);
- }
- task->thread.gsindex = GS_TLS_SEL;
- task->thread.gs = 0;
- } else {
- task->thread.gsindex = 0;
- task->thread.gs = addr;
- if (doit) {
- load_gs_index(0);
- ret = HYPERVISOR_set_segment_base(SEGBASE_GS_USER, addr);
- }
- }
- put_cpu();
- break;
- case ARCH_SET_FS:
- /* Not strictly needed for fs, but do it for symmetry
- with gs */
- if (addr >= TASK_SIZE)
- return -EPERM;
- cpu = get_cpu();
- /* handle small bases via the GDT because that's faster to
- switch. */
- if (addr <= 0xffffffff) {
- set_32bit_tls(task, FS_TLS, addr);
- if (doit) {
- load_TLS(&task->thread, cpu);
- asm volatile("movl %0,%%fs" :: "r"
(FS_TLS_SEL));
- }
- task->thread.fsindex = FS_TLS_SEL;
- task->thread.fs = 0;
- } else {
- task->thread.fsindex = 0;
- task->thread.fs = addr;
- if (doit) {
- /* set the selector to 0 to not confuse
- __switch_to */
- asm volatile("movl %0,%%fs" :: "r" (0));
- ret = HYPERVISOR_set_segment_base(SEGBASE_FS,
addr);
-
- }
- }
- put_cpu();
- break;
- case ARCH_GET_FS: {
- unsigned long base;
- if (task->thread.fsindex == FS_TLS_SEL)
- base = read_32bit_tls(task, FS_TLS);
- else if (doit) {
- rdmsrl(MSR_FS_BASE, base);
- } else
- base = task->thread.fs;
- ret = put_user(base, (unsigned long __user *)addr);
- break;
- }
- case ARCH_GET_GS: {
- unsigned long base;
- if (task->thread.gsindex == GS_TLS_SEL)
- base = read_32bit_tls(task, GS_TLS);
- else if (doit) {
- rdmsrl(MSR_KERNEL_GS_BASE, base);
- } else
- base = task->thread.gs;
- ret = put_user(base, (unsigned long __user *)addr);
- break;
- }
-
- default:
- ret = -EINVAL;
- break;
- }
-
- return ret;
-}
-
-long sys_arch_prctl(int code, unsigned long addr)
-{
- return do_arch_prctl(current, code, addr);
-}
-
-/*
- * Capture the user space registers if the task is not running (in user space)
- */
-int dump_task_regs(struct task_struct *tsk, elf_gregset_t *regs)
-{
- struct pt_regs *pp, ptregs;
-
- pp = (struct pt_regs *)(tsk->thread.rsp0);
- --pp;
-
- ptregs = *pp;
- ptregs.cs &= 0xffff;
- ptregs.ss &= 0xffff;
-
- elf_core_copy_regs(regs, &ptregs);
-
- boot_option_idle_override = 1;
- return 1;
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/setup.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/setup.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,1375 +0,0 @@
-/*
- * linux/arch/x86-64/kernel/setup.c
- *
- * Copyright (C) 1995 Linus Torvalds
- *
- * Nov 2001 Dave Jones <davej@xxxxxxx>
- * Forked from i386 setup code.
- *
- * $Id$
- */
-
-/*
- * This file handles the architecture-dependent parts of initialization
- */
-
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/stddef.h>
-#include <linux/unistd.h>
-#include <linux/ptrace.h>
-#include <linux/slab.h>
-#include <linux/user.h>
-#include <linux/a.out.h>
-#include <linux/tty.h>
-#include <linux/ioport.h>
-#include <linux/delay.h>
-#include <linux/config.h>
-#include <linux/init.h>
-#include <linux/initrd.h>
-#include <linux/highmem.h>
-#include <linux/bootmem.h>
-#include <linux/module.h>
-#include <asm/processor.h>
-#include <linux/console.h>
-#include <linux/seq_file.h>
-#include <linux/root_dev.h>
-#include <linux/pci.h>
-#include <linux/acpi.h>
-#include <linux/kallsyms.h>
-#include <linux/edd.h>
-#include <linux/percpu.h>
-#include <asm/mtrr.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/smp.h>
-#include <asm/msr.h>
-#include <asm/desc.h>
-#include <video/edid.h>
-#include <asm/e820.h>
-#include <asm/dma.h>
-#include <asm/mpspec.h>
-#include <asm/mmu_context.h>
-#include <asm/bootsetup.h>
-#include <asm/proto.h>
-#include <asm/setup.h>
-#include <asm/mach_apic.h>
-#include <asm/numa.h>
-#include <asm-xen/xen-public/physdev.h>
-#include "setup_arch_pre.h"
-#include <asm-xen/hypervisor.h>
-
-#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
-#define PFN_PHYS(x) ((x) << PAGE_SHIFT)
-
-#include <asm/mach-xen/setup_arch_post.h>
-
-extern unsigned long start_pfn;
-
-#if 0
-struct edid_info {
- unsigned char dummy[128];
-};
-#endif
-
-extern struct edid_info edid_info;
-
-/* Allows setting of maximum possible memory size */
-unsigned long xen_override_max_pfn;
-/*
- * Machine setup..
- */
-
-struct cpuinfo_x86 boot_cpu_data;
-
-unsigned long mmu_cr4_features;
-EXPORT_SYMBOL_GPL(mmu_cr4_features);
-
-int acpi_disabled;
-EXPORT_SYMBOL(acpi_disabled);
-#ifdef CONFIG_ACPI_BOOT
-extern int __initdata acpi_ht;
-extern acpi_interrupt_flags acpi_sci_flags;
-int __initdata acpi_force = 0;
-#endif
-
-int acpi_numa __initdata;
-
-/* For PCI or other memory-mapped resources */
-unsigned long pci_mem_start = 0x10000000;
-
-/* Boot loader ID as an integer, for the benefit of proc_dointvec */
-int bootloader_type;
-
-unsigned long saved_video_mode;
-
-#ifdef CONFIG_SWIOTLB
-int swiotlb;
-EXPORT_SYMBOL(swiotlb);
-#endif
-
-/*
- * Setup options
- */
-struct drive_info_struct { char dummy[32]; } drive_info;
-struct screen_info screen_info;
-struct sys_desc_table_struct {
- unsigned short length;
- unsigned char table[0];
-};
-
-struct edid_info edid_info;
-struct e820map e820;
-
-unsigned char aux_device_present;
-
-extern int root_mountflags;
-extern char _text, _etext, _edata, _end;
-
-char command_line[COMMAND_LINE_SIZE];
-
-struct resource standard_io_resources[] = {
- { .name = "dma1", .start = 0x00, .end = 0x1f,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO },
- { .name = "pic1", .start = 0x20, .end = 0x21,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO },
- { .name = "timer0", .start = 0x40, .end = 0x43,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO },
- { .name = "timer1", .start = 0x50, .end = 0x53,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO },
- { .name = "keyboard", .start = 0x60, .end = 0x6f,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO },
- { .name = "dma page reg", .start = 0x80, .end = 0x8f,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO },
- { .name = "pic2", .start = 0xa0, .end = 0xa1,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO },
- { .name = "dma2", .start = 0xc0, .end = 0xdf,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO },
- { .name = "fpu", .start = 0xf0, .end = 0xff,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO }
-};
-
-#define STANDARD_IO_RESOURCES \
- (sizeof standard_io_resources / sizeof standard_io_resources[0])
-
-#define IORESOURCE_RAM (IORESOURCE_BUSY | IORESOURCE_MEM)
-
-struct resource data_resource = {
- .name = "Kernel data",
- .start = 0,
- .end = 0,
- .flags = IORESOURCE_RAM,
-};
-struct resource code_resource = {
- .name = "Kernel code",
- .start = 0,
- .end = 0,
- .flags = IORESOURCE_RAM,
-};
-
-#define IORESOURCE_ROM (IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM)
-
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
-static struct resource system_rom_resource = {
- .name = "System ROM",
- .start = 0xf0000,
- .end = 0xfffff,
- .flags = IORESOURCE_ROM,
-};
-
-static struct resource extension_rom_resource = {
- .name = "Extension ROM",
- .start = 0xe0000,
- .end = 0xeffff,
- .flags = IORESOURCE_ROM,
-};
-
-static struct resource adapter_rom_resources[] = {
- { .name = "Adapter ROM", .start = 0xc8000, .end = 0,
- .flags = IORESOURCE_ROM },
- { .name = "Adapter ROM", .start = 0, .end = 0,
- .flags = IORESOURCE_ROM },
- { .name = "Adapter ROM", .start = 0, .end = 0,
- .flags = IORESOURCE_ROM },
- { .name = "Adapter ROM", .start = 0, .end = 0,
- .flags = IORESOURCE_ROM },
- { .name = "Adapter ROM", .start = 0, .end = 0,
- .flags = IORESOURCE_ROM },
- { .name = "Adapter ROM", .start = 0, .end = 0,
- .flags = IORESOURCE_ROM }
-};
-#endif
-
-#define ADAPTER_ROM_RESOURCES \
- (sizeof adapter_rom_resources / sizeof adapter_rom_resources[0])
-
-static struct resource video_rom_resource = {
- .name = "Video ROM",
- .start = 0xc0000,
- .end = 0xc7fff,
- .flags = IORESOURCE_ROM,
-};
-
-static struct resource video_ram_resource = {
- .name = "Video RAM area",
- .start = 0xa0000,
- .end = 0xbffff,
- .flags = IORESOURCE_RAM,
-};
-
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
-#define romsignature(x) (*(unsigned short *)(x) == 0xaa55)
-
-static int __init romchecksum(unsigned char *rom, unsigned long length)
-{
- unsigned char *p, sum = 0;
-
- for (p = rom; p < rom + length; p++)
- sum += *p;
- return sum == 0;
-}
-
-static void __init probe_roms(void)
-{
- unsigned long start, length, upper;
- unsigned char *rom;
- int i;
-
- /* video rom */
- upper = adapter_rom_resources[0].start;
- for (start = video_rom_resource.start; start < upper; start += 2048) {
- rom = isa_bus_to_virt(start);
- if (!romsignature(rom))
- continue;
-
- video_rom_resource.start = start;
-
- /* 0 < length <= 0x7f * 512, historically */
- length = rom[2] * 512;
-
- /* if checksum okay, trust length byte */
- if (length && romchecksum(rom, length))
- video_rom_resource.end = start + length - 1;
-
- request_resource(&iomem_resource, &video_rom_resource);
- break;
- }
-
- start = (video_rom_resource.end + 1 + 2047) & ~2047UL;
- if (start < upper)
- start = upper;
-
- /* system rom */
- request_resource(&iomem_resource, &system_rom_resource);
- upper = system_rom_resource.start;
-
- /* check for extension rom (ignore length byte!) */
- rom = isa_bus_to_virt(extension_rom_resource.start);
- if (romsignature(rom)) {
- length = extension_rom_resource.end -
extension_rom_resource.start + 1;
- if (romchecksum(rom, length)) {
- request_resource(&iomem_resource,
&extension_rom_resource);
- upper = extension_rom_resource.start;
- }
- }
-
- /* check for adapter roms on 2k boundaries */
- for (i = 0; i < ADAPTER_ROM_RESOURCES && start < upper; start += 2048) {
- rom = isa_bus_to_virt(start);
- if (!romsignature(rom))
- continue;
-
- /* 0 < length <= 0x7f * 512, historically */
- length = rom[2] * 512;
-
- /* but accept any length that fits if checksum okay */
- if (!length || start + length > upper || !romchecksum(rom,
length))
- continue;
-
- adapter_rom_resources[i].start = start;
- adapter_rom_resources[i].end = start + length - 1;
- request_resource(&iomem_resource, &adapter_rom_resources[i]);
-
- start = adapter_rom_resources[i++].end & ~2047UL;
- }
-}
-#endif
-
-/*
- * Point at the empty zero page to start with. We map the real shared_info
- * page as soon as fixmap is up and running.
- */
-shared_info_t *HYPERVISOR_shared_info = (shared_info_t *)empty_zero_page;
-EXPORT_SYMBOL(HYPERVISOR_shared_info);
-
-u32 *phys_to_machine_mapping, *pfn_to_mfn_frame_list;
-
-EXPORT_SYMBOL(phys_to_machine_mapping);
-
-DEFINE_PER_CPU(multicall_entry_t, multicall_list[8]);
-DEFINE_PER_CPU(int, nr_multicall_ents);
-
-/* Raw start-of-day parameters from the hypervisor. */
-union xen_start_info_union xen_start_info_union;
-
-static __init void parse_cmdline_early (char ** cmdline_p)
-{
- char c = ' ', *to = command_line, *from = COMMAND_LINE;
- int len = 0, max_cmdline;
-
- if ((max_cmdline = MAX_GUEST_CMDLINE) > COMMAND_LINE_SIZE)
- max_cmdline = COMMAND_LINE_SIZE;
- memcpy(saved_command_line, xen_start_info.cmd_line, max_cmdline);
- /* Save unparsed command line copy for /proc/cmdline */
- saved_command_line[max_cmdline-1] = '\0';
-
- for (;;) {
- if (c != ' ')
- goto next_char;
-
-#ifdef CONFIG_SMP
- /*
- * If the BIOS enumerates physical processors before logical,
- * maxcpus=N at enumeration-time can be used to disable HT.
- */
- else if (!memcmp(from, "maxcpus=", 8)) {
- extern unsigned int maxcpus;
-
- maxcpus = simple_strtoul(from + 8, NULL, 0);
- }
-#endif
-#ifdef CONFIG_ACPI_BOOT
- /* "acpi=off" disables both ACPI table parsing and interpreter
init */
- if (!memcmp(from, "acpi=off", 8))
- disable_acpi();
-
- if (!memcmp(from, "acpi=force", 10)) {
- /* add later when we do DMI horrors: */
- acpi_force = 1;
- acpi_disabled = 0;
- }
-
- /* acpi=ht just means: do ACPI MADT parsing
- at bootup, but don't enable the full ACPI interpreter */
- if (!memcmp(from, "acpi=ht", 7)) {
- if (!acpi_force)
- disable_acpi();
- acpi_ht = 1;
- }
- else if (!memcmp(from, "pci=noacpi", 10))
- acpi_disable_pci();
- else if (!memcmp(from, "acpi=noirq", 10))
- acpi_noirq_set();
-
- else if (!memcmp(from, "acpi_sci=edge", 13))
- acpi_sci_flags.trigger = 1;
- else if (!memcmp(from, "acpi_sci=level", 14))
- acpi_sci_flags.trigger = 3;
- else if (!memcmp(from, "acpi_sci=high", 13))
- acpi_sci_flags.polarity = 1;
- else if (!memcmp(from, "acpi_sci=low", 12))
- acpi_sci_flags.polarity = 3;
-
- /* acpi=strict disables out-of-spec workarounds */
- else if (!memcmp(from, "acpi=strict", 11)) {
- acpi_strict = 1;
- }
-#endif
-
-#if 0
- if (!memcmp(from, "nolapic", 7) ||
- !memcmp(from, "disableapic", 11))
- disable_apic = 1;
-
- if (!memcmp(from, "noapic", 6))
- skip_ioapic_setup = 1;
-
- if (!memcmp(from, "apic", 4)) {
- skip_ioapic_setup = 0;
- ioapic_force = 1;
- }
-#endif
-
- if (!memcmp(from, "mem=", 4))
- parse_memopt(from+4, &from);
-
-#ifdef CONFIG_DISCONTIGMEM
- if (!memcmp(from, "numa=", 5))
- numa_setup(from+5);
-#endif
-
-#ifdef CONFIG_GART_IOMMU
- if (!memcmp(from,"iommu=",6)) {
- iommu_setup(from+6);
- }
-#endif
-
- if (!memcmp(from,"oops=panic", 10))
- panic_on_oops = 1;
-
- if (!memcmp(from, "noexec=", 7))
- nonx_setup(from + 7);
-
- next_char:
- c = *(from++);
- if (!c)
- break;
- if (COMMAND_LINE_SIZE <= ++len)
- break;
- *(to++) = c;
- }
- *to = '\0';
- *cmdline_p = command_line;
-}
-
-#ifndef CONFIG_DISCONTIGMEM
-static void __init contig_initmem_init(void)
-{
- unsigned long bootmap_size, bootmap;
-
- /*
- * partially used pages are not usable - thus
- * we are rounding upwards:
- */
-
- bootmap_size = bootmem_bootmap_pages(end_pfn)<<PAGE_SHIFT;
- bootmap = start_pfn;
- bootmap_size = init_bootmem(bootmap, end_pfn);
- reserve_bootmem(bootmap, bootmap_size);
-
- free_bootmem(start_pfn << PAGE_SHIFT, (end_pfn - start_pfn) <<
PAGE_SHIFT);
- printk("Registering memory for bootmem: from %lx, size = %lx\n",
- start_pfn << PAGE_SHIFT, (end_pfn - start_pfn) <<
PAGE_SHIFT);
- /*
- * This should cover kernel_end
- */
-#if 0
- reserve_bootmem(HIGH_MEMORY, (PFN_PHYS(start_pfn) +
- bootmap_size + PAGE_SIZE-1) -
(HIGH_MEMORY));
-#endif
- reserve_bootmem(0, (PFN_PHYS(start_pfn) +
- bootmap_size + PAGE_SIZE-1));
-
-}
-#endif
-
-/* Use inline assembly to define this because the nops are defined
- as inline assembly strings in the include files and we cannot
- get them easily into strings. */
-asm("\t.data\nk8nops: "
- K8_NOP1 K8_NOP2 K8_NOP3 K8_NOP4 K8_NOP5 K8_NOP6
- K8_NOP7 K8_NOP8);
-
-extern unsigned char k8nops[];
-static unsigned char *k8_nops[ASM_NOP_MAX+1] = {
- NULL,
- k8nops,
- k8nops + 1,
- k8nops + 1 + 2,
- k8nops + 1 + 2 + 3,
- k8nops + 1 + 2 + 3 + 4,
- k8nops + 1 + 2 + 3 + 4 + 5,
- k8nops + 1 + 2 + 3 + 4 + 5 + 6,
- k8nops + 1 + 2 + 3 + 4 + 5 + 6 + 7,
-};
-
-/* Replace instructions with better alternatives for this CPU type.
-
- This runs before SMP is initialized to avoid SMP problems with
- self modifying code. This implies that assymetric systems where
- APs have less capabilities than the boot processor are not handled.
- In this case boot with "noreplacement". */
-void apply_alternatives(void *start, void *end)
-{
- struct alt_instr *a;
- int diff, i, k;
- for (a = start; (void *)a < end; a++) {
- if (!boot_cpu_has(a->cpuid))
- continue;
-
- BUG_ON(a->replacementlen > a->instrlen);
- __inline_memcpy(a->instr, a->replacement, a->replacementlen);
- diff = a->instrlen - a->replacementlen;
-
- /* Pad the rest with nops */
- for (i = a->replacementlen; diff > 0; diff -= k, i += k) {
- k = diff;
- if (k > ASM_NOP_MAX)
- k = ASM_NOP_MAX;
- __inline_memcpy(a->instr + i, k8_nops[k], k);
- }
- }
-}
-
-static int no_replacement __initdata = 0;
-
-void __init alternative_instructions(void)
-{
- extern struct alt_instr __alt_instructions[], __alt_instructions_end[];
- if (no_replacement)
- return;
- apply_alternatives(__alt_instructions, __alt_instructions_end);
-}
-
-static int __init noreplacement_setup(char *s)
-{
- no_replacement = 1;
- return 0;
-}
-
-__setup("noreplacement", noreplacement_setup);
-
-#if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
-struct edd edd;
-#ifdef CONFIG_EDD_MODULE
-EXPORT_SYMBOL(edd);
-#endif
-/**
- * copy_edd() - Copy the BIOS EDD information
- * from boot_params into a safe place.
- *
- */
-static inline void copy_edd(void)
-{
- memcpy(edd.mbr_signature, EDD_MBR_SIGNATURE, sizeof(edd.mbr_signature));
- memcpy(edd.edd_info, EDD_BUF, sizeof(edd.edd_info));
- edd.mbr_signature_nr = EDD_MBR_SIG_NR;
- edd.edd_info_nr = EDD_NR;
-}
-#else
-static inline void copy_edd(void)
-{
-}
-#endif
-
-#if 0
-#define EBDA_ADDR_POINTER 0x40E
-static void __init reserve_ebda_region(void)
-{
- unsigned int addr;
- /**
- * there is a real-mode segmented pointer pointing to the
- * 4K EBDA area at 0x40E
- */
- addr = *(unsigned short *)phys_to_virt(EBDA_ADDR_POINTER);
- addr <<= 4;
- if (addr)
- reserve_bootmem_generic(addr, PAGE_SIZE);
-}
-#endif
-
-/*
- * Guest physical starts from 0.
- */
-
-unsigned long __init xen_end_of_ram(void)
-{
- unsigned long max_end_pfn = xen_start_info.nr_pages;
-
- if ( xen_override_max_pfn < max_end_pfn)
- xen_override_max_pfn = max_end_pfn;
-
- return xen_override_max_pfn;
-}
-
-static void __init print_memory_map(char *who)
-{
- int i;
-
- for (i = 0; i < e820.nr_map; i++) {
- early_printk(" %s: %016Lx - %016Lx ", who,
- e820.map[i].addr,
- e820.map[i].addr + e820.map[i].size);
- switch (e820.map[i].type) {
- case E820_RAM: early_printk("(usable)\n");
- break;
- case E820_RESERVED:
- early_printk("(reserved)\n");
- break;
- case E820_ACPI:
- early_printk("(ACPI data)\n");
- break;
- case E820_NVS:
- early_printk("(ACPI NVS)\n");
- break;
- default: early_printk("type %u\n", e820.map[i].type);
- break;
- }
- }
-}
-
-void __init setup_arch(char **cmdline_p)
-{
- unsigned long low_mem_size;
- int i, j;
- physdev_op_t op;
-
-#if 0
- ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
-#else
- ROOT_DEV = MKDEV(RAMDISK_MAJOR,0);
-#endif
- drive_info = DRIVE_INFO;
-
-#ifdef CONFIG_XEN_PHYSDEV_ACCESS
- screen_info = SCREEN_INFO;
-#endif
- edid_info = EDID_INFO;
- aux_device_present = AUX_DEVICE_INFO;
- saved_video_mode = SAVED_VIDEO_MODE;
- bootloader_type = LOADER_TYPE;
-
-#ifdef CONFIG_BLK_DEV_RAM
- rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK;
- rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0);
- rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0);
-#endif
-/* register_console(&xen_console); */
-
-#ifdef CONFIG_XEN_PHYSDEV_ACCESS
- /* This is drawn from a dump from vgacon:startup in standard Linux. */
- screen_info.orig_video_mode = 3;
- screen_info.orig_video_isVGA = 1;
- screen_info.orig_video_lines = 25;
- screen_info.orig_video_cols = 80;
- screen_info.orig_video_ega_bx = 3;
- screen_info.orig_video_points = 16;
-#endif
- ARCH_SETUP
- print_memory_map(machine_specific_memory_setup());
-
- /* copy_edd(); */
-
- if (!MOUNT_ROOT_RDONLY)
- root_mountflags &= ~MS_RDONLY;
- init_mm.start_code = (unsigned long) &_text;
- init_mm.end_code = (unsigned long) &_etext;
- init_mm.end_data = (unsigned long) &_edata;
-/* init_mm.brk = (unsigned long) &_end; */
- init_mm.brk = start_pfn << PAGE_SHIFT;
-
-
-#if 0 /* XEN: This is nonsense: kernel may not even be contiguous in RAM. */
- code_resource.start = virt_to_phys(&_text);
- code_resource.end = virt_to_phys(&_etext)-1;
- data_resource.start = virt_to_phys(&_etext);
- data_resource.end = virt_to_phys(&_edata)-1;
-#endif
- parse_cmdline_early(cmdline_p);
-
- early_identify_cpu(&boot_cpu_data);
-
- /*
- * partially used pages are not usable - thus
- * we are rounding upwards:
- */
-#if 0
- end_pfn = e820_end_of_ram();
-#else
- end_pfn = xen_end_of_ram();
-#endif
-
- check_efer();
-
- init_memory_mapping(0, (end_pfn << PAGE_SHIFT));
-
-#ifdef CONFIG_ACPI_NUMA
- /*
- * Parse SRAT to discover nodes.
- */
- acpi_numa_init();
-#endif
-
-#ifdef CONFIG_DISCONTIGMEM
- numa_initmem_init(0, end_pfn);
-#else
- contig_initmem_init();
-#endif
-
- /* Reserve direct mapping and shared info etc. */
-// reserve_bootmem_generic(table_start << PAGE_SHIFT, (table_end + 1 -
table_start) << PAGE_SHIFT);
-
-// reserve_bootmem_generic(0, (table_end + 1) << PAGE_SHIFT);
-
- /* reserve kernel */
-// kernel_end = round_up(__pa_symbol(&_end),PAGE_SIZE);
-
-#if 0
- /*
- * reserve physical page 0 - it's a special BIOS page on many boxes,
- * enabling clean reboots, SMP operation, laptop functions.
- */
- reserve_bootmem_generic(0, PAGE_SIZE);
-#endif
-
- /* reserve ebda region */
-/* reserve_ebda_region(); */
-
-#ifdef CONFIG_SMP
- /*
- * But first pinch a few for the stack/trampoline stuff
- * FIXME: Don't need the extra page at 4K, but need to fix
- * trampoline before removing it. (see the GDT stuff)
- */
- reserve_bootmem_generic(PAGE_SIZE, PAGE_SIZE);
-
- /* Reserve SMP trampoline */
- reserve_bootmem_generic(SMP_TRAMPOLINE_BASE, PAGE_SIZE);
-#endif
-
-#ifdef CONFIG_ACPI_SLEEP
- /*
- * Reserve low memory region for sleep support.
- */
- acpi_reserve_bootmem();
-#endif
-#ifdef CONFIG_BLK_DEV_INITRD
- if (xen_start_info.mod_start) {
- if (INITRD_START + INITRD_SIZE <= (end_pfn << PAGE_SHIFT)) {
- /*reserve_bootmem_generic(INITRD_START, INITRD_SIZE);*/
- initrd_start = INITRD_START + PAGE_OFFSET;
- initrd_end = initrd_start+INITRD_SIZE;
- initrd_below_start_ok = 1;
- } else {
- printk(KERN_ERR "initrd extends beyond end of memory "
- "(0x%08lx > 0x%08lx)\ndisabling initrd\n",
- (unsigned long)(INITRD_START + INITRD_SIZE),
- (unsigned long)(end_pfn << PAGE_SHIFT));
- initrd_start = 0;
- }
- }
-#endif
- paging_init();
-#ifdef CONFIG_X86_LOCAL_APIC
- /*
- * Find and reserve possible boot-time SMP configuration:
- */
- find_smp_config();
-#endif
- /* Make sure we have a large enough P->M table. */
- if (end_pfn > xen_start_info.nr_pages) {
- phys_to_machine_mapping = alloc_bootmem(
- max_pfn * sizeof(unsigned long));
- memset(phys_to_machine_mapping, ~0,
- max_pfn * sizeof(unsigned long));
- memcpy(phys_to_machine_mapping,
- (unsigned long *)xen_start_info.mfn_list,
- xen_start_info.nr_pages * sizeof(unsigned long));
- free_bootmem(
- __pa(xen_start_info.mfn_list),
- PFN_PHYS(PFN_UP(xen_start_info.nr_pages *
- sizeof(unsigned long))));
- }
-
- pfn_to_mfn_frame_list = alloc_bootmem(PAGE_SIZE);
-
- for ( i=0, j=0; i < end_pfn; i+=(PAGE_SIZE/sizeof(unsigned long)), j++ )
- {
- pfn_to_mfn_frame_list[j] =
- virt_to_machine(&phys_to_machine_mapping[i]) >> PAGE_SHIFT;
- }
-
-#if 0
- check_ioapic();
-#endif
-
-#ifdef CONFIG_ACPI_BOOT
- /*
- * Initialize the ACPI boot-time table parser (gets the RSDP and SDT).
- * Call this early for SRAT node setup.
- */
- acpi_boot_table_init();
-
- /*
- * Read APIC and some other early information from ACPI tables.
- */
- acpi_boot_init();
-#endif
-#ifdef CONFIG_X86_LOCAL_APIC
- /*
- * get boot-time SMP configuration:
- */
- if (smp_found_config)
- get_smp_config();
-#ifndef CONFIG_XEN
- init_apic_mappings();
-#endif
-#endif
-
- /* XXX Disable irqdebug until we have a way to avoid interrupt
- * conflicts. */
-/* noirqdebug_setup(""); */
-
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
- /*
- * Request address space for all standard RAM and ROM resources
- * and also for regions reported as reserved by the e820.
- */
- probe_roms();
-#endif
-/* e820_reserve_resources(); */
-
- request_resource(&iomem_resource, &video_ram_resource);
-
- {
- unsigned i;
- /* request I/O space for devices used on all i[345]86 PCs */
- for (i = 0; i < STANDARD_IO_RESOURCES; i++)
- request_resource(&ioport_resource, &standard_io_resources[i]);
- }
-
- /* Will likely break when you have unassigned resources with more
- than 4GB memory and bridges that don't support more than 4GB.
- Doing it properly would require to use pci_alloc_consistent
- in this case. */
- low_mem_size = ((end_pfn << PAGE_SHIFT) + 0xfffff) & ~0xfffff;
- if (low_mem_size > pci_mem_start)
- pci_mem_start = low_mem_size;
-
-#ifdef CONFIG_GART_IOMMU
- iommu_hole_init();
-#endif
-
- op.cmd = PHYSDEVOP_SET_IOPL;
- op.u.set_iopl.iopl = current->thread.io_pl = 1;
- HYPERVISOR_physdev_op(&op);
-
- if (xen_start_info.flags & SIF_INITDOMAIN) {
- if (!(xen_start_info.flags & SIF_PRIVILEGED))
- panic("Xen granted us console access "
- "but not privileged status");
-
-#ifdef CONFIG_VT
-#if defined(CONFIG_VGA_CONSOLE)
- conswitchp = &vga_con;
-#elif defined(CONFIG_DUMMY_CONSOLE)
- conswitchp = &dummy_con;
-#endif
-#endif
- } else {
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
- extern const struct consw xennull_con;
- extern int console_use_vt;
-#if defined(CONFIG_VGA_CONSOLE)
- /* disable VGA driver */
- ORIG_VIDEO_ISVGA = VIDEO_TYPE_VLFB;
-#endif
- conswitchp = &xennull_con;
- console_use_vt = 0;
-#endif
- }
-}
-
-static int __init get_model_name(struct cpuinfo_x86 *c)
-{
- unsigned int *v;
-
- if (c->x86_cpuid_level < 0x80000004)
- return 0;
-
- v = (unsigned int *) c->x86_model_id;
- cpuid(0x80000002, &v[0], &v[1], &v[2], &v[3]);
- cpuid(0x80000003, &v[4], &v[5], &v[6], &v[7]);
- cpuid(0x80000004, &v[8], &v[9], &v[10], &v[11]);
- c->x86_model_id[48] = 0;
- return 1;
-}
-
-
-static void __init display_cacheinfo(struct cpuinfo_x86 *c)
-{
- unsigned int n, dummy, eax, ebx, ecx, edx;
-
- n = c->x86_cpuid_level;
-
- if (n >= 0x80000005) {
- cpuid(0x80000005, &dummy, &ebx, &ecx, &edx);
- printk(KERN_INFO "CPU: L1 I Cache: %dK (%d bytes/line), D cache
%dK (%d bytes/line)\n",
- edx>>24, edx&0xFF, ecx>>24, ecx&0xFF);
- c->x86_cache_size=(ecx>>24)+(edx>>24);
- /* On K8 L1 TLB is inclusive, so don't count it */
- c->x86_tlbsize = 0;
- }
-
- if (n >= 0x80000006) {
- cpuid(0x80000006, &dummy, &ebx, &ecx, &edx);
- ecx = cpuid_ecx(0x80000006);
- c->x86_cache_size = ecx >> 16;
- c->x86_tlbsize += ((ebx >> 16) & 0xfff) + (ebx & 0xfff);
-
- printk(KERN_INFO "CPU: L2 Cache: %dK (%d bytes/line)\n",
- c->x86_cache_size, ecx & 0xFF);
- }
-
- if (n >= 0x80000007)
- cpuid(0x80000007, &dummy, &dummy, &dummy, &c->x86_power);
- if (n >= 0x80000008) {
- cpuid(0x80000008, &eax, &dummy, &dummy, &dummy);
- c->x86_virt_bits = (eax >> 8) & 0xff;
- c->x86_phys_bits = eax & 0xff;
- }
-}
-
-
-static int __init init_amd(struct cpuinfo_x86 *c)
-{
- int r;
- int level;
-#ifdef CONFIG_NUMA
- int cpu;
-#endif
-
- /* Bit 31 in normal CPUID used for nonstandard 3DNow ID;
- 3DNow is IDd by bit 31 in extended CPUID (1*32+31) anyway */
- clear_bit(0*32+31, &c->x86_capability);
-
- /* C-stepping K8? */
- level = cpuid_eax(1);
- if ((level >= 0x0f48 && level < 0x0f50) || level >= 0x0f58)
- set_bit(X86_FEATURE_K8_C, &c->x86_capability);
-
- r = get_model_name(c);
- if (!r) {
- switch (c->x86) {
- case 15:
- /* Should distinguish Models here, but this is only
- a fallback anyways. */
- strcpy(c->x86_model_id, "Hammer");
- break;
- }
- }
- display_cacheinfo(c);
-
- if (c->x86_cpuid_level >= 0x80000008) {
- c->x86_num_cores = (cpuid_ecx(0x80000008) & 0xff) + 1;
- if (c->x86_num_cores & (c->x86_num_cores - 1))
- c->x86_num_cores = 1;
-
-#ifdef CONFIG_NUMA
- /* On a dual core setup the lower bits of apic id
- distingush the cores. Fix up the CPU<->node mappings
- here based on that.
- Assumes number of cores is a power of two.
- When using SRAT use mapping from SRAT. */
- cpu = c->x86_apicid;
- if (acpi_numa <= 0 && c->x86_num_cores > 1) {
- cpu_to_node[cpu] = cpu >> hweight32(c->x86_num_cores -
1);
- if (!node_online(cpu_to_node[cpu]))
- cpu_to_node[cpu] = first_node(node_online_map);
- }
- printk(KERN_INFO "CPU %d(%d) -> Node %d\n",
- cpu, c->x86_num_cores, cpu_to_node[cpu]);
-#endif
- }
-
- return r;
-}
-
-static void __init detect_ht(struct cpuinfo_x86 *c)
-{
-#ifdef CONFIG_SMP
- u32 eax, ebx, ecx, edx;
- int index_lsb, index_msb, tmp;
- int cpu = smp_processor_id();
-
- if (!cpu_has(c, X86_FEATURE_HT))
- return;
-
- cpuid(1, &eax, &ebx, &ecx, &edx);
- smp_num_siblings = (ebx & 0xff0000) >> 16;
-
- if (smp_num_siblings == 1) {
- printk(KERN_INFO "CPU: Hyper-Threading is disabled\n");
- } else if (smp_num_siblings > 1) {
- index_lsb = 0;
- index_msb = 31;
- /*
- * At this point we only support two siblings per
- * processor package.
- */
- if (smp_num_siblings > NR_CPUS) {
- printk(KERN_WARNING "CPU: Unsupported number of the
siblings %d", smp_num_siblings);
- smp_num_siblings = 1;
- return;
- }
- tmp = smp_num_siblings;
- while ((tmp & 1) == 0) {
- tmp >>=1 ;
- index_lsb++;
- }
- tmp = smp_num_siblings;
- while ((tmp & 0x80000000 ) == 0) {
- tmp <<=1 ;
- index_msb--;
- }
- if (index_lsb != index_msb )
- index_msb++;
- phys_proc_id[cpu] = phys_pkg_id(index_msb);
-
- printk(KERN_INFO "CPU: Physical Processor ID: %d\n",
- phys_proc_id[cpu]);
- }
-#endif
-}
-
-static void __init sched_cmp_hack(struct cpuinfo_x86 *c)
-{
-#ifdef CONFIG_SMP
- /* AMD dual core looks like HT but isn't really. Hide it from the
- scheduler. This works around problems with the domain scheduler.
- Also probably gives slightly better scheduling and disables
- SMT nice which is harmful on dual core.
- TBD tune the domain scheduler for dual core. */
- if (c->x86_vendor == X86_VENDOR_AMD && cpu_has(c,
X86_FEATURE_CMP_LEGACY))
- smp_num_siblings = 1;
-#endif
-}
-
-static void __init init_intel(struct cpuinfo_x86 *c)
-{
- /* Cache sizes */
- unsigned n;
-
- init_intel_cacheinfo(c);
- n = c->x86_cpuid_level;
- if (n >= 0x80000008) {
- unsigned eax = cpuid_eax(0x80000008);
- c->x86_virt_bits = (eax >> 8) & 0xff;
- c->x86_phys_bits = eax & 0xff;
- }
-
- if (c->x86 == 15)
- c->x86_cache_alignment = c->x86_clflush_size * 2;
-}
-
-void __init get_cpu_vendor(struct cpuinfo_x86 *c)
-{
- char *v = c->x86_vendor_id;
-
- if (!strcmp(v, "AuthenticAMD"))
- c->x86_vendor = X86_VENDOR_AMD;
- else if (!strcmp(v, "GenuineIntel"))
- c->x86_vendor = X86_VENDOR_INTEL;
- else
- c->x86_vendor = X86_VENDOR_UNKNOWN;
-}
-
-struct cpu_model_info {
- int vendor;
- int family;
- char *model_names[16];
-};
-
-/* Do some early cpuid on the boot CPU to get some parameter that are
- needed before check_bugs. Everything advanced is in identify_cpu
- below. */
-void __init early_identify_cpu(struct cpuinfo_x86 *c)
-{
- u32 tfms;
-
- c->loops_per_jiffy = loops_per_jiffy;
- c->x86_cache_size = -1;
- c->x86_vendor = X86_VENDOR_UNKNOWN;
- c->x86_model = c->x86_mask = 0; /* So far unknown... */
- c->x86_vendor_id[0] = '\0'; /* Unset */
- c->x86_model_id[0] = '\0'; /* Unset */
- c->x86_clflush_size = 64;
- c->x86_cache_alignment = c->x86_clflush_size;
- c->x86_num_cores = 1;
- c->x86_apicid = c == &boot_cpu_data ? 0 : c - cpu_data;
- c->x86_cpuid_level = 0;
- memset(&c->x86_capability, 0, sizeof c->x86_capability);
-
- /* Get vendor name */
- cpuid(0x00000000, (unsigned int *)&c->cpuid_level,
- (unsigned int *)&c->x86_vendor_id[0],
- (unsigned int *)&c->x86_vendor_id[8],
- (unsigned int *)&c->x86_vendor_id[4]);
-
- get_cpu_vendor(c);
-
- /* Initialize the standard set of capabilities */
- /* Note that the vendor-specific code below might override */
-
- /* Intel-defined flags: level 0x00000001 */
- if (c->cpuid_level >= 0x00000001) {
- __u32 misc;
- cpuid(0x00000001, &tfms, &misc, &c->x86_capability[4],
- &c->x86_capability[0]);
- c->x86 = (tfms >> 8) & 0xf;
- c->x86_model = (tfms >> 4) & 0xf;
- c->x86_mask = tfms & 0xf;
- if (c->x86 == 0xf) {
- c->x86 += (tfms >> 20) & 0xff;
- c->x86_model += ((tfms >> 16) & 0xF) << 4;
- }
- if (c->x86_capability[0] & (1<<19))
- c->x86_clflush_size = ((misc >> 8) & 0xff) * 8;
- c->x86_apicid = misc >> 24;
- } else {
- /* Have CPUID level 0 only - unheard of */
- c->x86 = 4;
- }
-}
-
-/*
- * This does the hard work of actually picking apart the CPU stuff...
- */
-void __init identify_cpu(struct cpuinfo_x86 *c)
-{
- int i;
- u32 xlvl;
-
- early_identify_cpu(c);
-
- /* AMD-defined flags: level 0x80000001 */
- xlvl = cpuid_eax(0x80000000);
- c->x86_cpuid_level = xlvl;
- if ((xlvl & 0xffff0000) == 0x80000000) {
- if (xlvl >= 0x80000001) {
- c->x86_capability[1] = cpuid_edx(0x80000001);
- c->x86_capability[5] = cpuid_ecx(0x80000001);
- }
- if (xlvl >= 0x80000004)
- get_model_name(c); /* Default name */
- }
-
- /* Transmeta-defined flags: level 0x80860001 */
- xlvl = cpuid_eax(0x80860000);
- if ((xlvl & 0xffff0000) == 0x80860000) {
- /* Don't set x86_cpuid_level here for now to not confuse. */
- if (xlvl >= 0x80860001)
- c->x86_capability[2] = cpuid_edx(0x80860001);
- }
-
- /*
- * Vendor-specific initialization. In this section we
- * canonicalize the feature flags, meaning if there are
- * features a certain CPU supports which CPUID doesn't
- * tell us, CPUID claiming incorrect flags, or other bugs,
- * we handle them here.
- *
- * At the end of this section, c->x86_capability better
- * indicate the features this CPU genuinely supports!
- */
- switch (c->x86_vendor) {
- case X86_VENDOR_AMD:
- init_amd(c);
- break;
-
- case X86_VENDOR_INTEL:
- init_intel(c);
- break;
-
- case X86_VENDOR_UNKNOWN:
- default:
- display_cacheinfo(c);
- break;
- }
-
- select_idle_routine(c);
- detect_ht(c);
- sched_cmp_hack(c);
-
- /*
- * On SMP, boot_cpu_data holds the common feature set between
- * all CPUs; so make sure that we indicate which features are
- * common between the CPUs. The first time this routine gets
- * executed, c == &boot_cpu_data.
- */
- if (c != &boot_cpu_data) {
- /* AND the already accumulated flags with these */
- for (i = 0 ; i < NCAPINTS ; i++)
- boot_cpu_data.x86_capability[i] &= c->x86_capability[i];
- }
-
-#ifdef CONFIG_X86_MCE
- mcheck_init(c);
-#endif
-#ifdef CONFIG_NUMA
- if (c != &boot_cpu_data)
- numa_add_cpu(c - cpu_data);
-#endif
-}
-
-
-void __init print_cpu_info(struct cpuinfo_x86 *c)
-{
- if (c->x86_model_id[0])
- printk("%s", c->x86_model_id);
-
- if (c->x86_mask || c->cpuid_level >= 0)
- printk(" stepping %02x\n", c->x86_mask);
- else
- printk("\n");
-}
-
-/*
- * Get CPU information for use by the procfs.
- */
-
-static int show_cpuinfo(struct seq_file *m, void *v)
-{
- struct cpuinfo_x86 *c = v;
-
- /*
- * These flag bits must match the definitions in <asm/cpufeature.h>.
- * NULL means this bit is undefined or reserved; either way it doesn't
- * have meaning as far as Linux is concerned. Note that it's important
- * to realize there is a difference between this table and CPUID -- if
- * applications want to get the raw CPUID data, they should access
- * /dev/cpu/<cpu_nr>/cpuid instead.
- */
- static char *x86_cap_flags[] = {
- /* Intel-defined */
- "fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce",
- "cx8", "apic", NULL, "sep", "mtrr", "pge", "mca", "cmov",
- "pat", "pse36", "pn", "clflush", NULL, "dts", "acpi", "mmx",
- "fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", NULL,
-
- /* AMD-defined */
- "pni", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, "syscall", NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, "nx", NULL, "mmxext", NULL,
- NULL, "fxsr_opt", NULL, NULL, NULL, "lm", "3dnowext", "3dnow",
-
- /* Transmeta-defined */
- "recovery", "longrun", NULL, "lrti", NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
- /* Other (Linux-defined) */
- "cxmmx", "k6_mtrr", "cyrix_arr", "centaur_mcr", NULL, NULL,
NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
- /* Intel-defined (#2) */
- "pni", NULL, NULL, "monitor", "ds_cpl", NULL, NULL, "est",
- "tm2", NULL, "cid", NULL, NULL, "cx16", "xtpr", NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
- /* AMD-defined (#2) */
- "lahf_lm", "cmp_legacy", NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL
- };
- static char *x86_power_flags[] = {
- "ts", /* temperature sensor */
- "fid", /* frequency id control */
- "vid", /* voltage id control */
- "ttp", /* thermal trip */
- };
-
-
-#ifdef CONFIG_SMP
- if (!cpu_online(c-cpu_data))
- return 0;
-#endif
-
- seq_printf(m,"processor\t: %u\n"
- "vendor_id\t: %s\n"
- "cpu family\t: %d\n"
- "model\t\t: %d\n"
- "model name\t: %s\n",
- (unsigned)(c-cpu_data),
- c->x86_vendor_id[0] ? c->x86_vendor_id : "unknown",
- c->x86,
- (int)c->x86_model,
- c->x86_model_id[0] ? c->x86_model_id : "unknown");
-
- if (c->x86_mask || c->cpuid_level >= 0)
- seq_printf(m, "stepping\t: %d\n", c->x86_mask);
- else
- seq_printf(m, "stepping\t: unknown\n");
-
- if (cpu_has(c,X86_FEATURE_TSC)) {
- seq_printf(m, "cpu MHz\t\t: %u.%03u\n",
- cpu_khz / 1000, (cpu_khz % 1000));
- }
-
- /* Cache size */
- if (c->x86_cache_size >= 0)
- seq_printf(m, "cache size\t: %d KB\n", c->x86_cache_size);
-
-#ifdef CONFIG_SMP
- seq_printf(m, "physical id\t: %d\n", phys_proc_id[c - cpu_data]);
- seq_printf(m, "siblings\t: %d\n", c->x86_num_cores * smp_num_siblings);
-#endif
-
- seq_printf(m,
- "fpu\t\t: yes\n"
- "fpu_exception\t: yes\n"
- "cpuid level\t: %d\n"
- "wp\t\t: yes\n"
- "flags\t\t:",
- c->cpuid_level);
-
- {
- int i;
- for ( i = 0 ; i < 32*NCAPINTS ; i++ )
- if ( test_bit(i, &c->x86_capability) &&
- x86_cap_flags[i] != NULL )
- seq_printf(m, " %s", x86_cap_flags[i]);
- }
-
- seq_printf(m, "\nbogomips\t: %lu.%02lu\n",
- c->loops_per_jiffy/(500000/HZ),
- (c->loops_per_jiffy/(5000/HZ)) % 100);
-
- if (c->x86_tlbsize > 0)
- seq_printf(m, "TLB size\t: %d 4K pages\n", c->x86_tlbsize);
- seq_printf(m, "clflush size\t: %d\n", c->x86_clflush_size);
- seq_printf(m, "cache_alignment\t: %d\n", c->x86_cache_alignment);
-
- seq_printf(m, "address sizes\t: %u bits physical, %u bits virtual\n",
- c->x86_phys_bits, c->x86_virt_bits);
-
- seq_printf(m, "power management:");
- {
- unsigned i;
- for (i = 0; i < 32; i++)
- if (c->x86_power & (1 << i)) {
- if (i < ARRAY_SIZE(x86_power_flags))
- seq_printf(m, " %s",
x86_power_flags[i]);
- else
- seq_printf(m, " [%d]", i);
- }
- }
- seq_printf(m, "\n");
-
- if (c->x86_num_cores > 1)
- seq_printf(m, "cpu cores\t: %d\n", c->x86_num_cores);
-
- seq_printf(m, "\n\n");
-
- return 0;
-}
-
-static void *c_start(struct seq_file *m, loff_t *pos)
-{
- return *pos < NR_CPUS ? cpu_data + *pos : NULL;
-}
-
-static void *c_next(struct seq_file *m, void *v, loff_t *pos)
-{
- ++*pos;
- return c_start(m, pos);
-}
-
-static void c_stop(struct seq_file *m, void *v)
-{
-}
-
-struct seq_operations cpuinfo_op = {
- .start =c_start,
- .next = c_next,
- .stop = c_stop,
- .show = show_cpuinfo,
-};
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/setup64.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/setup64.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,344 +0,0 @@
-/*
- * X86-64 specific CPU setup.
- * Copyright (C) 1995 Linus Torvalds
- * Copyright 2001, 2002, 2003 SuSE Labs / Andi Kleen.
- * See setup.c for older changelog.
- * $Id: setup64.c,v 1.12 2002/03/21 10:09:17 ak Exp $
- *
- * Jun Nakajima <jun.nakajima@xxxxxxxxx>
- * Modified for Xen
- *
- */
-#include <linux/config.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/string.h>
-#include <linux/bootmem.h>
-#include <linux/bitops.h>
-#include <asm/pda.h>
-#include <asm/pgtable.h>
-#include <asm/processor.h>
-#include <asm/desc.h>
-#include <asm/atomic.h>
-#include <asm/mmu_context.h>
-#include <asm/smp.h>
-#include <asm/i387.h>
-#include <asm/percpu.h>
-#include <asm/mtrr.h>
-#include <asm/proto.h>
-#include <asm/mman.h>
-#include <asm/numa.h>
-
-#include <asm-xen/hypervisor.h>
-
-char x86_boot_params[2048] __initdata = {0,};
-
-cpumask_t cpu_initialized __initdata = CPU_MASK_NONE;
-
-struct x8664_pda cpu_pda[NR_CPUS] __cacheline_aligned;
-
-extern struct task_struct init_task;
-
-extern unsigned char __per_cpu_start[], __per_cpu_end[];
-
-extern struct desc_ptr cpu_gdt_descr[];
-struct desc_ptr idt_descr = { 256 * 16, (unsigned long) idt_table };
-
-char boot_cpu_stack[IRQSTACKSIZE]
__attribute__((section(".bss.page_aligned")));
-
-unsigned long __supported_pte_mask = ~0UL;
-static int do_not_nx __initdata = 0;
-
-/* noexec=on|off
-Control non executable mappings for 64bit processes.
-
-on Enable(default)
-off Disable
-*/
-int __init nonx_setup(char *str)
-{
- if (!strncmp(str, "on", 2)) {
- __supported_pte_mask |= _PAGE_NX;
- do_not_nx = 0;
- } else if (!strncmp(str, "off", 3)) {
- do_not_nx = 1;
- __supported_pte_mask &= ~_PAGE_NX;
- }
- return 0;
-}
-__setup("noexec=", nonx_setup); /* parsed early actually */
-
-int force_personality32 = READ_IMPLIES_EXEC;
-
-/* noexec32=on|off
-Control non executable heap for 32bit processes.
-To control the stack too use noexec=off
-
-on PROT_READ does not imply PROT_EXEC for 32bit processes
-off PROT_READ implies PROT_EXEC (default)
-*/
-static int __init nonx32_setup(char *str)
-{
- if (!strcmp(str, "on"))
- force_personality32 &= ~READ_IMPLIES_EXEC;
- else if (!strcmp(str, "off"))
- force_personality32 |= READ_IMPLIES_EXEC;
- return 0;
-}
-__setup("noexec32=", nonx32_setup);
-
-/*
- * Great future plan:
- * Declare PDA itself and support (irqstack,tss,pgd) as per cpu data.
- * Always point %gs to its beginning
- */
-void __init setup_per_cpu_areas(void)
-{
- int i;
- unsigned long size;
-
- /* Copy section for each CPU (we discard the original) */
- size = ALIGN(__per_cpu_end - __per_cpu_start, SMP_CACHE_BYTES);
-#ifdef CONFIG_MODULES
- if (size < PERCPU_ENOUGH_ROOM)
- size = PERCPU_ENOUGH_ROOM;
-#endif
-
- for (i = 0; i < NR_CPUS; i++) {
- unsigned char *ptr;
-
- if (!NODE_DATA(cpu_to_node(i))) {
- printk("cpu with no node %d, num_online_nodes %d\n",
- i, num_online_nodes());
- ptr = alloc_bootmem(size);
- } else {
- ptr = alloc_bootmem_node(NODE_DATA(cpu_to_node(i)),
size);
- }
- if (!ptr)
- panic("Cannot allocate cpu data for CPU %d\n", i);
- cpu_pda[i].data_offset = ptr - __per_cpu_start;
- memcpy(ptr, __per_cpu_start, __per_cpu_end - __per_cpu_start);
- }
-}
-
-void pda_init(int cpu)
-{
- pgd_t *old_level4 = (pgd_t *)xen_start_info.pt_base;
- struct x8664_pda *pda = &cpu_pda[cpu];
-
- /* Setup up data that may be needed in __get_free_pages early */
- asm volatile("movl %0,%%fs ; movl %0,%%gs" :: "r" (0));
- HYPERVISOR_set_segment_base(SEGBASE_GS_KERNEL,
- (unsigned long)(cpu_pda + cpu));
-
- pda->me = pda;
- pda->cpunumber = cpu;
- pda->irqcount = -1;
- pda->kernelstack =
- (unsigned long)stack_thread_info() - PDA_STACKOFFSET +
THREAD_SIZE;
- pda->active_mm = &init_mm;
- pda->mmu_state = 0;
- pda->kernel_mode = 1;
-
- if (cpu == 0) {
- memcpy((void *)init_level4_pgt,
- (void *) xen_start_info.pt_base, PAGE_SIZE);
- /* others are initialized in smpboot.c */
- pda->pcurrent = &init_task;
- pda->irqstackptr = boot_cpu_stack;
- make_page_readonly(init_level4_pgt);
- make_page_readonly(init_level4_user_pgt);
- make_page_readonly(level3_user_pgt); /* for vsyscall stuff */
- xen_pgd_pin(__pa_symbol(init_level4_user_pgt));
- xen_pud_pin(__pa_symbol(level3_user_pgt));
- set_pgd((pgd_t *)(init_level4_user_pgt + 511),
- mk_kernel_pgd(__pa_symbol(level3_user_pgt)));
- } else {
- pda->irqstackptr = (char *)
- __get_free_pages(GFP_ATOMIC, IRQSTACK_ORDER);
- if (!pda->irqstackptr)
- panic("cannot allocate irqstack for cpu %d", cpu);
- }
-
- xen_pt_switch(__pa(init_level4_pgt));
- xen_new_user_pt(__pa(init_level4_user_pgt));
-
- if (cpu == 0) {
- xen_pgd_unpin(__pa(old_level4));
-#if 0
- early_printk("__pa: %x, <machine_phys> old_level 4 %x\n",
- __pa(xen_start_info.pt_base),
- pfn_to_mfn(__pa(old_level4) >> PAGE_SHIFT));
-#endif
-// make_page_writable(old_level4);
-// free_bootmem(__pa(old_level4), PAGE_SIZE);
- }
-
- pda->irqstackptr += IRQSTACKSIZE-64;
-}
-
-char boot_exception_stacks[N_EXCEPTION_STACKS * EXCEPTION_STKSZ]
-__attribute__((section(".bss.page_aligned")));
-
-/* May not be marked __init: used by software suspend */
-void syscall_init(void)
-{
-#ifdef CONFIG_IA32_EMULATION
- syscall32_cpu_init ();
-#endif
-}
-
-void __init check_efer(void)
-{
- unsigned long efer;
-
- /* rdmsrl(MSR_EFER, efer); */
-
- /*
- * At this point, Xen does not like the bit 63.
- * So NX is not supported. Come back later.
- */
- efer = 0;
-
- if (!(efer & EFER_NX) || do_not_nx) {
- __supported_pte_mask &= ~_PAGE_NX;
- }
-}
-
-void __init cpu_gdt_init(struct desc_ptr *gdt_descr)
-{
- unsigned long frames[16];
- unsigned long va;
- int f;
-
- for (va = gdt_descr->address, f = 0;
- va < gdt_descr->address + gdt_descr->size;
- va += PAGE_SIZE, f++) {
- frames[f] = virt_to_machine(va) >> PAGE_SHIFT;
- make_page_readonly((void *)va);
- }
- if (HYPERVISOR_set_gdt(frames, gdt_descr->size /
- sizeof (struct desc_struct)))
- BUG();
-}
-
-
-/*
- * cpu_init() initializes state that is per-CPU. Some data is already
- * initialized (naturally) in the bootstrap process, such as the GDT
- * and IDT. We reload them nevertheless, this function acts as a
- * 'CPU state barrier', nothing should get across.
- * A lot of state is already set up in PDA init.
- */
-void __init cpu_init (void)
-{
-#ifdef CONFIG_SMP
- int cpu = stack_smp_processor_id();
-#else
- int cpu = smp_processor_id();
-#endif
- struct tss_struct *t = &per_cpu(init_tss, cpu);
- unsigned long v;
- char *estacks = NULL;
- struct task_struct *me;
- int i;
-
- /* CPU 0 is initialised in head64.c */
- if (cpu != 0) {
- pda_init(cpu);
- } else
- estacks = boot_exception_stacks;
-
- me = current;
-
- if (test_and_set_bit(cpu, &cpu_initialized))
- panic("CPU#%d already initialized!\n", cpu);
-
- printk("Initializing CPU#%d\n", cpu);
-
-#if 0
- clear_in_cr4(X86_CR4_VME|X86_CR4_PVI|X86_CR4_TSD|X86_CR4_DE);
-#endif
- /*
- * Initialize the per-CPU GDT with the boot GDT,
- * and set up the GDT descriptor:
- */
- if (cpu) {
- memcpy(cpu_gdt_table[cpu], cpu_gdt_table[0], GDT_SIZE);
- }
-
- cpu_gdt_descr[cpu].size = GDT_SIZE;
- cpu_gdt_descr[cpu].address = (unsigned long)cpu_gdt_table[cpu];
-#if 0
- asm volatile("lgdt %0" :: "m" (cpu_gdt_descr[cpu]));
- asm volatile("lidt %0" :: "m" (idt_descr));
-#endif
- cpu_gdt_init(&cpu_gdt_descr[cpu]);
-
-#if 0
- memcpy(me->thread.tls_array, cpu_gdt_table[cpu], GDT_ENTRY_TLS_ENTRIES
* 8);
-
-#endif
- memcpy(me->thread.tls_array, &get_cpu_gdt_table(cpu)[GDT_ENTRY_TLS_MIN],
- GDT_ENTRY_TLS_ENTRIES * 8);
-
- /*
- * Delete NT
- */
-
- asm volatile("pushfq ; popq %%rax ; btr $14,%%rax ; pushq %%rax ;
popfq" ::: "eax");
-
- if (cpu == 0)
- early_identify_cpu(&boot_cpu_data);
-
- syscall_init();
-
- barrier();
- check_efer();
-
- /*
- * set up and load the per-CPU TSS
- */
- for (v = 0; v < N_EXCEPTION_STACKS; v++) {
- if (cpu) {
- estacks = (char *)__get_free_pages(GFP_ATOMIC,
- EXCEPTION_STACK_ORDER);
- if (!estacks)
- panic("Cannot allocate exception stack %ld
%d\n",
- v, cpu);
- }
- estacks += EXCEPTION_STKSZ;
- t->ist[v] = (unsigned long)estacks;
- }
-
- t->io_bitmap_base = offsetof(struct tss_struct, io_bitmap);
- /*
- * <= is required because the CPU will access up to
- * 8 bits beyond the end of the IO permission bitmap.
- */
- for (i = 0; i <= IO_BITMAP_LONGS; i++)
- t->io_bitmap[i] = ~0UL;
-
- atomic_inc(&init_mm.mm_count);
- me->active_mm = &init_mm;
- if (me->mm)
- BUG();
- enter_lazy_tlb(&init_mm, me);
-
- load_LDT(&init_mm.context);
-
- /*
- * Clear all 6 debug registers:
- */
-#define CD(register) HYPERVISOR_set_debugreg(register, 0)
-
- CD(0); CD(1); CD(2); CD(3); /* no db4 and db5 */; CD(6); CD(7);
-
-#undef CD
- fpu_init();
-
-#ifdef CONFIG_NUMA
- numa_add_cpu(cpu);
-#endif
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/signal.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/signal.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,493 +0,0 @@
-/*
- * linux/arch/x86_64/kernel/signal.c
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- * Copyright (C) 2000, 2001, 2002 Andi Kleen SuSE Labs
- *
- * 1997-11-28 Modified for POSIX.1b signals by Richard Henderson
- * 2000-06-20 Pentium III FXSR, SSE support by Gareth Hughes
- * 2000-2002 x86-64 support by Andi Kleen
- *
- * $Id: signal.c,v 1.18 2001/10/17 22:30:37 ak Exp $
- */
-
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/smp_lock.h>
-#include <linux/kernel.h>
-#include <linux/signal.h>
-#include <linux/errno.h>
-#include <linux/wait.h>
-#include <linux/ptrace.h>
-#include <linux/unistd.h>
-#include <linux/stddef.h>
-#include <linux/personality.h>
-#include <linux/compiler.h>
-#include <asm/ucontext.h>
-#include <asm/uaccess.h>
-#include <asm/i387.h>
-#include <asm/proto.h>
-
-/* #define DEBUG_SIG 1 */
-
-#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
-
-void ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
- sigset_t *set, struct pt_regs * regs);
-void ia32_setup_frame(int sig, struct k_sigaction *ka,
- sigset_t *set, struct pt_regs * regs);
-
-asmlinkage long
-sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize, struct pt_regs
*regs)
-{
- sigset_t saveset, newset;
-
- /* XXX: Don't preclude handling different sized sigset_t's. */
- if (sigsetsize != sizeof(sigset_t))
- return -EINVAL;
-
- if (copy_from_user(&newset, unewset, sizeof(newset)))
- return -EFAULT;
- sigdelsetmask(&newset, ~_BLOCKABLE);
-
- spin_lock_irq(¤t->sighand->siglock);
- saveset = current->blocked;
- current->blocked = newset;
- recalc_sigpending();
- spin_unlock_irq(¤t->sighand->siglock);
-#ifdef DEBUG_SIG
- printk("rt_sigsuspend savset(%lx) newset(%lx) regs(%p) rip(%lx)\n",
- saveset, newset, regs, regs->rip);
-#endif
- regs->rax = -EINTR;
- while (1) {
- current->state = TASK_INTERRUPTIBLE;
- schedule();
- if (do_signal(regs, &saveset))
- return -EINTR;
- }
-}
-
-asmlinkage long
-sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
- struct pt_regs *regs)
-{
- return do_sigaltstack(uss, uoss, regs->rsp);
-}
-
-
-/*
- * Do a signal return; undo the signal stack.
- */
-
-struct rt_sigframe
-{
- char *pretcode;
- struct ucontext uc;
- struct siginfo info;
-};
-
-static int
-restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
unsigned long *prax)
-{
- unsigned int err = 0;
-
- /* Always make any pending restarted system calls return -EINTR */
- current_thread_info()->restart_block.fn = do_no_restart_syscall;
-
-#define COPY(x) err |= __get_user(regs->x, &sc->x)
-
- COPY(rdi); COPY(rsi); COPY(rbp); COPY(rsp); COPY(rbx);
- COPY(rdx); COPY(rcx); COPY(rip);
- COPY(r8);
- COPY(r9);
- COPY(r10);
- COPY(r11);
- COPY(r12);
- COPY(r13);
- COPY(r14);
- COPY(r15);
-
- {
- unsigned int tmpflags;
- err |= __get_user(tmpflags, &sc->eflags);
- regs->eflags = (regs->eflags & ~0x40DD5) | (tmpflags & 0x40DD5);
- regs->orig_rax = -1; /* disable syscall checks */
- }
-
- {
- struct _fpstate __user * buf;
- err |= __get_user(buf, &sc->fpstate);
-
- if (buf) {
- if (verify_area(VERIFY_READ, buf, sizeof(*buf)))
- goto badframe;
- err |= restore_i387(buf);
- } else {
- struct task_struct *me = current;
- if (used_math()) {
- clear_fpu(me);
- clear_used_math();
- }
- }
- }
-
- err |= __get_user(*prax, &sc->rax);
- return err;
-
-badframe:
- return 1;
-}
-
-asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
-{
- struct rt_sigframe __user *frame;
- sigset_t set;
- unsigned long eax;
-
- frame = (struct rt_sigframe __user *)(regs->rsp - 8);
- if (verify_area(VERIFY_READ, frame, sizeof(*frame))) {
- goto badframe;
- }
- if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set))) {
- goto badframe;
- }
-
- sigdelsetmask(&set, ~_BLOCKABLE);
- spin_lock_irq(¤t->sighand->siglock);
- current->blocked = set;
- recalc_sigpending();
- spin_unlock_irq(¤t->sighand->siglock);
-
- if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &eax)) {
- goto badframe;
- }
-
-#ifdef DEBUG_SIG
- printk("%d sigreturn rip:%lx rsp:%lx frame:%p
rax:%lx\n",current->pid,regs.rip,regs.rsp,frame,eax);
-#endif
-
- if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->rsp) == -EFAULT)
- goto badframe;
-
- return eax;
-
-badframe:
- signal_fault(regs,frame,"sigreturn");
- return 0;
-}
-
-/*
- * Set up a signal frame.
- */
-
-static inline int
-setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, unsigned
long mask, struct task_struct *me)
-{
- int err = 0;
- unsigned long eflags;
-
- err |= __put_user(0, &sc->gs);
- err |= __put_user(0, &sc->fs);
-
- err |= __put_user(regs->rdi, &sc->rdi);
- err |= __put_user(regs->rsi, &sc->rsi);
- err |= __put_user(regs->rbp, &sc->rbp);
- err |= __put_user(regs->rsp, &sc->rsp);
- err |= __put_user(regs->rbx, &sc->rbx);
- err |= __put_user(regs->rdx, &sc->rdx);
- err |= __put_user(regs->rcx, &sc->rcx);
- err |= __put_user(regs->rax, &sc->rax);
- err |= __put_user(regs->r8, &sc->r8);
- err |= __put_user(regs->r9, &sc->r9);
- err |= __put_user(regs->r10, &sc->r10);
- err |= __put_user(regs->r11, &sc->r11);
- err |= __put_user(regs->r12, &sc->r12);
- err |= __put_user(regs->r13, &sc->r13);
- err |= __put_user(regs->r14, &sc->r14);
- err |= __put_user(regs->r15, &sc->r15);
- err |= __put_user(me->thread.trap_no, &sc->trapno);
- err |= __put_user(me->thread.error_code, &sc->err);
- err |= __put_user(regs->rip, &sc->rip);
- eflags = regs->eflags;
- if (current->ptrace & PT_PTRACED) {
- eflags &= ~TF_MASK;
- }
- err |= __put_user(eflags, &sc->eflags);
- err |= __put_user(mask, &sc->oldmask);
- err |= __put_user(me->thread.cr2, &sc->cr2);
-
- return err;
-}
-
-/*
- * Determine which stack to use..
- */
-
-static void __user *
-get_stack(struct k_sigaction *ka, struct pt_regs *regs, unsigned long size)
-{
- unsigned long rsp;
-
- /* Default to using normal stack - redzone*/
- rsp = regs->rsp - 128;
-
- /* This is the X/Open sanctioned signal stack switching. */
- /* RED-PEN: redzone on that stack? */
- if (ka->sa.sa_flags & SA_ONSTACK) {
- if (sas_ss_flags(rsp) == 0)
- rsp = current->sas_ss_sp + current->sas_ss_size;
- }
-
- return (void __user *)round_down(rsp - size, 16);
-}
-
-static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
- sigset_t *set, struct pt_regs * regs)
-{
- struct rt_sigframe __user *frame;
- struct _fpstate __user *fp = NULL;
- int err = 0;
- struct task_struct *me = current;
-
- if (used_math()) {
- fp = get_stack(ka, regs, sizeof(struct _fpstate));
- frame = (void __user *)round_down((unsigned long)fp -
sizeof(struct rt_sigframe), 16) - 8;
-
- if (!access_ok(VERIFY_WRITE, fp, sizeof(struct _fpstate))) {
- goto give_sigsegv;
- }
-
- if (save_i387(fp) < 0)
- err |= -1;
- } else {
- frame = get_stack(ka, regs, sizeof(struct rt_sigframe)) - 8;
- }
-
- if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) {
- goto give_sigsegv;
- }
-
- if (ka->sa.sa_flags & SA_SIGINFO) {
- err |= copy_siginfo_to_user(&frame->info, info);
- if (err) {
- goto give_sigsegv;
- }
- }
-
- /* Create the ucontext. */
- err |= __put_user(0, &frame->uc.uc_flags);
- err |= __put_user(0, &frame->uc.uc_link);
- err |= __put_user(me->sas_ss_sp, &frame->uc.uc_stack.ss_sp);
- err |= __put_user(sas_ss_flags(regs->rsp),
- &frame->uc.uc_stack.ss_flags);
- err |= __put_user(me->sas_ss_size, &frame->uc.uc_stack.ss_size);
- err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0], me);
- err |= __put_user(fp, &frame->uc.uc_mcontext.fpstate);
- if (sizeof(*set) == 16) {
- __put_user(set->sig[0], &frame->uc.uc_sigmask.sig[0]);
- __put_user(set->sig[1], &frame->uc.uc_sigmask.sig[1]);
- } else {
- err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
- }
-
- /* Set up to return from userspace. If provided, use a stub
- already in userspace. */
- /* x86-64 should always use SA_RESTORER. */
- if (ka->sa.sa_flags & SA_RESTORER) {
- err |= __put_user(ka->sa.sa_restorer, &frame->pretcode);
- } else {
- /* could use a vstub here */
- goto give_sigsegv;
- }
-
- if (err) {
- goto give_sigsegv;
- }
-
-#ifdef DEBUG_SIG
- printk("%d old rip %lx old rsp %lx old rax %lx\n",
current->pid,regs->rip,regs->rsp,regs->rax);
-#endif
-
- /* Set up registers for signal handler */
- {
- struct exec_domain *ed = current_thread_info()->exec_domain;
- if (unlikely(ed && ed->signal_invmap && sig < 32))
- sig = ed->signal_invmap[sig];
- }
- regs->rdi = sig;
- /* In case the signal handler was declared without prototypes */
- regs->rax = 0;
-
- /* This also works for non SA_SIGINFO handlers because they expect the
- next argument after the signal number on the stack. */
- regs->rsi = (unsigned long)&frame->info;
- regs->rdx = (unsigned long)&frame->uc;
- regs->rip = (unsigned long) ka->sa.sa_handler;
-
- regs->rsp = (unsigned long)frame;
-
- set_fs(USER_DS);
- if (regs->eflags & TF_MASK) {
- if ((current->ptrace & (PT_PTRACED | PT_DTRACE)) == (PT_PTRACED
| PT_DTRACE)) {
- ptrace_notify(SIGTRAP);
- } else {
- regs->eflags &= ~TF_MASK;
- }
- }
-
-#ifdef DEBUG_SIG
- printk("SIG deliver (%s:%d): sp=%p pc=%p ra=%p\n",
- current->comm, current->pid, frame, regs->rip, frame->pretcode);
-#endif
-
- return;
-
-give_sigsegv:
- force_sigsegv(sig, current);
-}
-
-/*
- * OK, we're invoking a handler
- */
-
-static void
-handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
- sigset_t *oldset, struct pt_regs *regs)
-{
-#ifdef DEBUG_SIG
- printk("handle_signal pid:%d sig:%lu rip:%lx rsp:%lx regs=%p\n",
current->pid, sig,
- regs->rip, regs->rsp, regs);
-#endif
-
- /* Are we from a system call? */
- if ((long)regs->orig_rax >= 0) {
- /* If so, check system call restarting.. */
- switch (regs->rax) {
- case -ERESTART_RESTARTBLOCK:
- case -ERESTARTNOHAND:
- regs->rax = -EINTR;
- break;
-
- case -ERESTARTSYS:
- if (!(ka->sa.sa_flags & SA_RESTART)) {
- regs->rax = -EINTR;
- break;
- }
- /* fallthrough */
- case -ERESTARTNOINTR:
- regs->rax = regs->orig_rax;
- regs->rip -= 2;
- }
- }
-
-#ifdef CONFIG_IA32_EMULATION
- if (test_thread_flag(TIF_IA32)) {
- if (ka->sa.sa_flags & SA_SIGINFO)
- ia32_setup_rt_frame(sig, ka, info, oldset, regs);
- else
- ia32_setup_frame(sig, ka, oldset, regs);
- } else
-#endif
- setup_rt_frame(sig, ka, info, oldset, regs);
-
- if (!(ka->sa.sa_flags & SA_NODEFER)) {
- spin_lock_irq(¤t->sighand->siglock);
- sigorsets(¤t->blocked,¤t->blocked,&ka->sa.sa_mask);
- sigaddset(¤t->blocked,sig);
- recalc_sigpending();
- spin_unlock_irq(¤t->sighand->siglock);
- }
-}
-
-/*
- * Note that 'init' is a special process: it doesn't get signals it doesn't
- * want to handle. Thus you cannot kill init even with a SIGKILL even by
- * mistake.
- */
-int do_signal(struct pt_regs *regs, sigset_t *oldset)
-{
- struct k_sigaction ka;
- siginfo_t info;
- int signr;
-
- /*
- * We want the common case to go fast, which
- * is why we may in certain cases get here from
- * kernel mode. Just return without doing anything
- * if so.
- */
- if ((regs->cs & 2) != 2) {
- return 1;
- }
-
- if (try_to_freeze(0))
- goto no_signal;
-
- if (!oldset)
- oldset = ¤t->blocked;
-
- signr = get_signal_to_deliver(&info, &ka, regs, NULL);
- if (signr > 0) {
- /* Reenable any watchpoints before delivering the
- * signal to user space. The processor register will
- * have been cleared if the watchpoint triggered
- * inside the kernel.
- */
- if (current->thread.debugreg7) {
- HYPERVISOR_set_debugreg(7,
- current->thread.debugreg7);
- }
-
- /* Whee! Actually deliver the signal. */
- handle_signal(signr, &info, &ka, oldset, regs);
- return 1;
- }
-
- no_signal:
- /* Did we come from a system call? */
- if ((long)regs->orig_rax >= 0) {
- /* Restart the system call - no handlers present */
- long res = regs->rax;
- if (res == -ERESTARTNOHAND ||
- res == -ERESTARTSYS ||
- res == -ERESTARTNOINTR) {
- regs->rax = regs->orig_rax;
- regs->rip -= 2;
- }
- if (regs->rax == (unsigned long)-ERESTART_RESTARTBLOCK) {
- regs->rax = __NR_restart_syscall;
- regs->rip -= 2;
- }
- }
- return 0;
-}
-
-void do_notify_resume(struct pt_regs *regs, sigset_t *oldset, __u32
thread_info_flags)
-{
-#ifdef DEBUG_SIG
- printk("do_notify_resume flags:%x rip:%lx rsp:%lx caller:%lx
pending:%lx\n",
- thread_info_flags, regs->rip, regs->rsp,
__builtin_return_address(0),signal_pending(current));
-#endif
-
- /* Pending single-step? */
- if (thread_info_flags & _TIF_SINGLESTEP) {
- regs->eflags |= TF_MASK;
- clear_thread_flag(TIF_SINGLESTEP);
- }
-
- /* deal with pending signal delivery */
- if (thread_info_flags & _TIF_SIGPENDING)
- do_signal(regs,oldset);
-}
-
-void signal_fault(struct pt_regs *regs, void __user *frame, char *where)
-{
- struct task_struct *me = current;
- if (exception_trace)
- printk("%s[%d] bad frame in %s frame:%p rip:%lx rsp:%lx
orax:%lx\n",
-
me->comm,me->pid,where,frame,regs->rip,regs->rsp,regs->orig_rax);
-
- force_sig(SIGSEGV, me);
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/smp.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/smp.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,411 +0,0 @@
-/*
- * Intel SMP support routines.
- *
- * (c) 1995 Alan Cox, Building #3 <alan@xxxxxxxxxx>
- * (c) 1998-99, 2000 Ingo Molnar <mingo@xxxxxxxxxx>
- * (c) 2002,2003 Andi Kleen, SuSE Labs.
- *
- * This code is released under the GNU General Public License version 2 or
- * later.
- */
-
-#include <linux/init.h>
-
-#include <linux/mm.h>
-#include <linux/irq.h>
-#include <linux/delay.h>
-#include <linux/spinlock.h>
-#include <linux/smp_lock.h>
-#include <linux/smp.h>
-#include <linux/kernel_stat.h>
-#include <linux/mc146818rtc.h>
-#include <linux/interrupt.h>
-
-#include <asm/mtrr.h>
-#include <asm/pgalloc.h>
-#include <asm/tlbflush.h>
-#include <asm/mach_apic.h>
-#include <asm/proto.h>
-
-/*
- * Smarter SMP flushing macros.
- * c/o Linus Torvalds.
- *
- * These mean you can really definitely utterly forget about
- * writing to user space from interrupts. (Its not allowed anyway).
- *
- * Optimizations Manfred Spraul <manfred@xxxxxxxxxxxxxxxx>
- */
-
-static cpumask_t flush_cpumask;
-static struct mm_struct * flush_mm;
-static unsigned long flush_va;
-static DEFINE_SPINLOCK(tlbstate_lock);
-#define FLUSH_ALL 0xffffffff
-
-/*
- * We cannot call mmdrop() because we are in interrupt context,
- * instead update mm->cpu_vm_mask.
- */
-static inline void leave_mm (unsigned long cpu)
-{
- if (read_pda(mmu_state) == TLBSTATE_OK)
- BUG();
- clear_bit(cpu, &read_pda(active_mm)->cpu_vm_mask);
- __flush_tlb();
-}
-
-/*
- *
- * The flush IPI assumes that a thread switch happens in this order:
- * [cpu0: the cpu that switches]
- * 1) switch_mm() either 1a) or 1b)
- * 1a) thread switch to a different mm
- * 1a1) clear_bit(cpu, &old_mm->cpu_vm_mask);
- * Stop ipi delivery for the old mm. This is not synchronized with
- * the other cpus, but smp_invalidate_interrupt ignore flush ipis
- * for the wrong mm, and in the worst case we perform a superfluous
- * tlb flush.
- * 1a2) set cpu mmu_state to TLBSTATE_OK
- * Now the smp_invalidate_interrupt won't call leave_mm if cpu0
- * was in lazy tlb mode.
- * 1a3) update cpu active_mm
- * Now cpu0 accepts tlb flushes for the new mm.
- * 1a4) set_bit(cpu, &new_mm->cpu_vm_mask);
- * Now the other cpus will send tlb flush ipis.
- * 1a4) change cr3.
- * 1b) thread switch without mm change
- * cpu active_mm is correct, cpu0 already handles
- * flush ipis.
- * 1b1) set cpu mmu_state to TLBSTATE_OK
- * 1b2) test_and_set the cpu bit in cpu_vm_mask.
- * Atomically set the bit [other cpus will start sending flush ipis],
- * and test the bit.
- * 1b3) if the bit was 0: leave_mm was called, flush the tlb.
- * 2) switch %%esp, ie current
- *
- * The interrupt must handle 2 special cases:
- * - cr3 is changed before %%esp, ie. it cannot use current->{active_,}mm.
- * - the cpu performs speculative tlb reads, i.e. even if the cpu only
- * runs in kernel space, the cpu could load tlb entries for user space
- * pages.
- *
- * The good news is that cpu mmu_state is local to each cpu, no
- * write/read ordering problems.
- */
-
-/*
- * TLB flush IPI:
- *
- * 1) Flush the tlb entries if the cpu uses the mm that's being flushed.
- * 2) Leave the mm if we are in the lazy tlb mode.
- */
-
-asmlinkage void smp_invalidate_interrupt (void)
-{
- unsigned long cpu;
-
- cpu = get_cpu();
-
- if (!cpu_isset(cpu, flush_cpumask))
- goto out;
- /*
- * This was a BUG() but until someone can quote me the
- * line from the intel manual that guarantees an IPI to
- * multiple CPUs is retried _only_ on the erroring CPUs
- * its staying as a return
- *
- * BUG();
- */
-
- if (flush_mm == read_pda(active_mm)) {
- if (read_pda(mmu_state) == TLBSTATE_OK) {
- if (flush_va == FLUSH_ALL)
- local_flush_tlb();
- else
- __flush_tlb_one(flush_va);
- } else
- leave_mm(cpu);
- }
- ack_APIC_irq();
- cpu_clear(cpu, flush_cpumask);
-
-out:
- put_cpu_no_resched();
-}
-
-static void flush_tlb_others(cpumask_t cpumask, struct mm_struct *mm,
- unsigned long va)
-{
- cpumask_t tmp;
- /*
- * A couple of (to be removed) sanity checks:
- *
- * - we do not send IPIs to not-yet booted CPUs.
- * - current CPU must not be in mask
- * - mask must exist :)
- */
- BUG_ON(cpus_empty(cpumask));
- cpus_and(tmp, cpumask, cpu_online_map);
- BUG_ON(!cpus_equal(tmp, cpumask));
- BUG_ON(cpu_isset(smp_processor_id(), cpumask));
- if (!mm)
- BUG();
-
- /*
- * I'm not happy about this global shared spinlock in the
- * MM hot path, but we'll see how contended it is.
- * Temporarily this turns IRQs off, so that lockups are
- * detected by the NMI watchdog.
- */
- spin_lock(&tlbstate_lock);
-
- flush_mm = mm;
- flush_va = va;
- cpus_or(flush_cpumask, cpumask, flush_cpumask);
-
- /*
- * We have to send the IPI only to
- * CPUs affected.
- */
- send_IPI_mask(cpumask, INVALIDATE_TLB_VECTOR);
-
- while (!cpus_empty(flush_cpumask))
- mb(); /* nothing. lockup detection does not belong here */;
-
- flush_mm = NULL;
- flush_va = 0;
- spin_unlock(&tlbstate_lock);
-}
-
-void flush_tlb_current_task(void)
-{
- struct mm_struct *mm = current->mm;
- cpumask_t cpu_mask;
-
- preempt_disable();
- cpu_mask = mm->cpu_vm_mask;
- cpu_clear(smp_processor_id(), cpu_mask);
-
- local_flush_tlb();
- if (!cpus_empty(cpu_mask))
- flush_tlb_others(cpu_mask, mm, FLUSH_ALL);
- preempt_enable();
-}
-
-void flush_tlb_mm (struct mm_struct * mm)
-{
- cpumask_t cpu_mask;
-
- preempt_disable();
- cpu_mask = mm->cpu_vm_mask;
- cpu_clear(smp_processor_id(), cpu_mask);
-
- if (current->active_mm == mm) {
- if (current->mm)
- local_flush_tlb();
- else
- leave_mm(smp_processor_id());
- }
- if (!cpus_empty(cpu_mask))
- flush_tlb_others(cpu_mask, mm, FLUSH_ALL);
-
- preempt_enable();
-}
-
-void flush_tlb_page(struct vm_area_struct * vma, unsigned long va)
-{
- struct mm_struct *mm = vma->vm_mm;
- cpumask_t cpu_mask;
-
- preempt_disable();
- cpu_mask = mm->cpu_vm_mask;
- cpu_clear(smp_processor_id(), cpu_mask);
-
- if (current->active_mm == mm) {
- if(current->mm)
- __flush_tlb_one(va);
- else
- leave_mm(smp_processor_id());
- }
-
- if (!cpus_empty(cpu_mask))
- flush_tlb_others(cpu_mask, mm, va);
-
- preempt_enable();
-}
-
-static void do_flush_tlb_all(void* info)
-{
- unsigned long cpu = smp_processor_id();
-
- __flush_tlb_all();
- if (read_pda(mmu_state) == TLBSTATE_LAZY)
- leave_mm(cpu);
-}
-
-void flush_tlb_all(void)
-{
- on_each_cpu(do_flush_tlb_all, NULL, 1, 1);
-}
-
-void smp_kdb_stop(void)
-{
- send_IPI_allbutself(KDB_VECTOR);
-}
-
-/*
- * this function sends a 'reschedule' IPI to another CPU.
- * it goes straight through and wastes no time serializing
- * anything. Worst case is that we lose a reschedule ...
- */
-
-void smp_send_reschedule(int cpu)
-{
- send_IPI_mask(cpumask_of_cpu(cpu), RESCHEDULE_VECTOR);
-}
-
-/*
- * Structure and data for smp_call_function(). This is designed to minimise
- * static memory requirements. It also looks cleaner.
- */
-static DEFINE_SPINLOCK(call_lock);
-
-struct call_data_struct {
- void (*func) (void *info);
- void *info;
- atomic_t started;
- atomic_t finished;
- int wait;
-};
-
-static struct call_data_struct * call_data;
-
-/*
- * this function sends a 'generic call function' IPI to all other CPUs
- * in the system.
- */
-static void __smp_call_function (void (*func) (void *info), void *info,
- int nonatomic, int wait)
-{
- struct call_data_struct data;
- int cpus = num_online_cpus()-1;
-
- if (!cpus)
- return;
-
- data.func = func;
- data.info = info;
- atomic_set(&data.started, 0);
- data.wait = wait;
- if (wait)
- atomic_set(&data.finished, 0);
-
- call_data = &data;
- wmb();
- /* Send a message to all other CPUs and wait for them to respond */
- send_IPI_allbutself(CALL_FUNCTION_VECTOR);
-
- /* Wait for response */
- while (atomic_read(&data.started) != cpus)
- cpu_relax();
-
- if (!wait)
- return;
-
- while (atomic_read(&data.finished) != cpus)
- cpu_relax();
-}
-
-/*
- * smp_call_function - run a function on all other CPUs.
- * @func: The function to run. This must be fast and non-blocking.
- * @info: An arbitrary pointer to pass to the function.
- * @nonatomic: currently unused.
- * @wait: If true, wait (atomically) until function has completed on other
- * CPUs.
- *
- * Returns 0 on success, else a negative status code. Does not return until
- * remote CPUs are nearly ready to execute func or are or have executed.
- *
- * You must not call this function with disabled interrupts or from a
- * hardware interrupt handler or from a bottom half handler.
- * Actually there are a few legal cases, like panic.
- */
-int smp_call_function (void (*func) (void *info), void *info, int nonatomic,
- int wait)
-{
- spin_lock(&call_lock);
- __smp_call_function(func,info,nonatomic,wait);
- spin_unlock(&call_lock);
- return 0;
-}
-
-void smp_stop_cpu(void)
-{
- /*
- * Remove this CPU:
- */
- cpu_clear(smp_processor_id(), cpu_online_map);
- local_irq_disable();
- disable_local_APIC();
- local_irq_enable();
-}
-
-static void smp_really_stop_cpu(void *dummy)
-{
- smp_stop_cpu();
- for (;;)
- asm("hlt");
-}
-
-void smp_send_stop(void)
-{
- int nolock = 0;
- if (reboot_force)
- return;
- /* Don't deadlock on the call lock in panic */
- if (!spin_trylock(&call_lock)) {
- /* ignore locking because we have paniced anyways */
- nolock = 1;
- }
- __smp_call_function(smp_really_stop_cpu, NULL, 0, 0);
- if (!nolock)
- spin_unlock(&call_lock);
- smp_stop_cpu();
-}
-
-/*
- * Reschedule call back. Nothing to do,
- * all the work is done automatically when
- * we return from the interrupt.
- */
-asmlinkage void smp_reschedule_interrupt(void)
-{
- ack_APIC_irq();
-}
-
-asmlinkage void smp_call_function_interrupt(void)
-{
- void (*func) (void *info) = call_data->func;
- void *info = call_data->info;
- int wait = call_data->wait;
-
- ack_APIC_irq();
- /*
- * Notify initiating CPU that I've grabbed the data and am
- * about to execute the function
- */
- mb();
- atomic_inc(&call_data->started);
- /*
- * At this point the info structure may be out of scope unless wait==1
- */
- irq_enter();
- (*func)(info);
- irq_exit();
- if (wait) {
- mb();
- atomic_inc(&call_data->finished);
- }
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/smpboot.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/smpboot.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,958 +0,0 @@
-/*
- * x86 SMP booting functions
- *
- * (c) 1995 Alan Cox, Building #3 <alan@xxxxxxxxxx>
- * (c) 1998, 1999, 2000 Ingo Molnar <mingo@xxxxxxxxxx>
- * Copyright 2001 Andi Kleen, SuSE Labs.
- *
- * Much of the core SMP work is based on previous work by Thomas Radke, to
- * whom a great many thanks are extended.
- *
- * Thanks to Intel for making available several different Pentium,
- * Pentium Pro and Pentium-II/Xeon MP machines.
- * Original development of Linux SMP code supported by Caldera.
- *
- * This code is released under the GNU General Public License version 2 or
- * later.
- *
- * Fixes
- * Felix Koop : NR_CPUS used properly
- * Jose Renau : Handle single CPU case.
- * Alan Cox : By repeated request 8) - Total BogoMIP
report.
- * Greg Wright : Fix for kernel stacks panic.
- * Erich Boleyn : MP v1.4 and additional changes.
- * Matthias Sattler : Changes for 2.1 kernel map.
- * Michel Lespinasse : Changes for 2.1 kernel map.
- * Michael Chastain : Change trampoline.S to gnu as.
- * Alan Cox : Dumb bug: 'B' step PPro's are fine
- * Ingo Molnar : Added APIC timers, based on code
- * from Jose Renau
- * Ingo Molnar : various cleanups and rewrites
- * Tigran Aivazian : fixed "0.00 in /proc/uptime on SMP" bug.
- * Maciej W. Rozycki : Bits for genuine 82489DX APICs
- * Andi Kleen : Changed for SMP boot into long mode.
- * Rusty Russell : Hacked into shape for new "hotplug"
boot process.
- */
-
-#include <linux/config.h>
-#include <linux/init.h>
-
-#include <linux/mm.h>
-#include <linux/kernel_stat.h>
-#include <linux/smp_lock.h>
-#include <linux/irq.h>
-#include <linux/bootmem.h>
-#include <linux/thread_info.h>
-#include <linux/module.h>
-
-#include <linux/delay.h>
-#include <linux/mc146818rtc.h>
-#include <asm/mtrr.h>
-#include <asm/pgalloc.h>
-#include <asm/desc.h>
-#include <asm/kdebug.h>
-#include <asm/tlbflush.h>
-#include <asm/proto.h>
-
-/* Number of siblings per CPU package */
-int smp_num_siblings = 1;
-/* Package ID of each logical CPU */
-u8 phys_proc_id[NR_CPUS] = { [0 ... NR_CPUS-1] = BAD_APICID };
-EXPORT_SYMBOL(phys_proc_id);
-
-/* Bitmask of currently online CPUs */
-cpumask_t cpu_online_map;
-
-cpumask_t cpu_callin_map;
-cpumask_t cpu_callout_map;
-static cpumask_t smp_commenced_mask;
-
-/* Per CPU bogomips and other parameters */
-struct cpuinfo_x86 cpu_data[NR_CPUS] __cacheline_aligned;
-
-/* Set when the idlers are all forked */
-int smp_threads_ready;
-
-cpumask_t cpu_sibling_map[NR_CPUS] __cacheline_aligned;
-
-/*
- * Trampoline 80x86 program as an array.
- */
-
-extern unsigned char trampoline_data [];
-extern unsigned char trampoline_end [];
-
-/*
- * Currently trivial. Write the real->protected mode
- * bootstrap into the page concerned. The caller
- * has made sure it's suitably aligned.
- */
-
-static unsigned long __init setup_trampoline(void)
-{
- void *tramp = __va(SMP_TRAMPOLINE_BASE);
- extern volatile __u32 tramp_gdt_ptr;
- tramp_gdt_ptr = __pa_symbol(&cpu_gdt_table);
- memcpy(tramp, trampoline_data, trampoline_end - trampoline_data);
- return virt_to_phys(tramp);
-}
-
-/*
- * The bootstrap kernel entry code has set these up. Save them for
- * a given CPU
- */
-
-static void __init smp_store_cpu_info(int id)
-{
- struct cpuinfo_x86 *c = cpu_data + id;
-
- *c = boot_cpu_data;
- identify_cpu(c);
-}
-
-/*
- * TSC synchronization.
- *
- * We first check whether all CPUs have their TSC's synchronized,
- * then we print a warning if not, and always resync.
- */
-
-static atomic_t tsc_start_flag = ATOMIC_INIT(0);
-static atomic_t tsc_count_start = ATOMIC_INIT(0);
-static atomic_t tsc_count_stop = ATOMIC_INIT(0);
-static unsigned long long tsc_values[NR_CPUS];
-
-#define NR_LOOPS 5
-
-extern unsigned int fast_gettimeoffset_quotient;
-
-static void __init synchronize_tsc_bp (void)
-{
- int i;
- unsigned long long t0;
- unsigned long long sum, avg;
- long long delta;
- long one_usec;
- int buggy = 0;
-
- printk(KERN_INFO "checking TSC synchronization across %u CPUs:
",num_booting_cpus());
-
- one_usec = cpu_khz;
-
- atomic_set(&tsc_start_flag, 1);
- wmb();
-
- /*
- * We loop a few times to get a primed instruction cache,
- * then the last pass is more or less synchronized and
- * the BP and APs set their cycle counters to zero all at
- * once. This reduces the chance of having random offsets
- * between the processors, and guarantees that the maximum
- * delay between the cycle counters is never bigger than
- * the latency of information-passing (cachelines) between
- * two CPUs.
- */
- for (i = 0; i < NR_LOOPS; i++) {
- /*
- * all APs synchronize but they loop on '== num_cpus'
- */
- while (atomic_read(&tsc_count_start) != num_booting_cpus()-1)
mb();
- atomic_set(&tsc_count_stop, 0);
- wmb();
- /*
- * this lets the APs save their current TSC:
- */
- atomic_inc(&tsc_count_start);
-
- sync_core();
- rdtscll(tsc_values[smp_processor_id()]);
- /*
- * We clear the TSC in the last loop:
- */
- if (i == NR_LOOPS-1)
- write_tsc(0, 0);
-
- /*
- * Wait for all APs to leave the synchronization point:
- */
- while (atomic_read(&tsc_count_stop) != num_booting_cpus()-1)
mb();
- atomic_set(&tsc_count_start, 0);
- wmb();
- atomic_inc(&tsc_count_stop);
- }
-
- sum = 0;
- for (i = 0; i < NR_CPUS; i++) {
- if (cpu_isset(i, cpu_callout_map)) {
- t0 = tsc_values[i];
- sum += t0;
- }
- }
- avg = sum / num_booting_cpus();
-
- sum = 0;
- for (i = 0; i < NR_CPUS; i++) {
- if (!cpu_isset(i, cpu_callout_map))
- continue;
-
- delta = tsc_values[i] - avg;
- if (delta < 0)
- delta = -delta;
- /*
- * We report bigger than 2 microseconds clock differences.
- */
- if (delta > 2*one_usec) {
- long realdelta;
- if (!buggy) {
- buggy = 1;
- printk("\n");
- }
- realdelta = delta / one_usec;
- if (tsc_values[i] < avg)
- realdelta = -realdelta;
-
- printk("BIOS BUG: CPU#%d improperly initialized, has
%ld usecs TSC skew! FIXED.\n",
- i, realdelta);
- }
-
- sum += delta;
- }
- if (!buggy)
- printk("passed.\n");
-}
-
-static void __init synchronize_tsc_ap (void)
-{
- int i;
-
- /*
- * Not every cpu is online at the time
- * this gets called, so we first wait for the BP to
- * finish SMP initialization:
- */
- while (!atomic_read(&tsc_start_flag)) mb();
-
- for (i = 0; i < NR_LOOPS; i++) {
- atomic_inc(&tsc_count_start);
- while (atomic_read(&tsc_count_start) != num_booting_cpus())
mb();
-
- sync_core();
- rdtscll(tsc_values[smp_processor_id()]);
- if (i == NR_LOOPS-1)
- write_tsc(0, 0);
-
- atomic_inc(&tsc_count_stop);
- while (atomic_read(&tsc_count_stop) != num_booting_cpus()) mb();
- }
-}
-#undef NR_LOOPS
-
-static atomic_t init_deasserted;
-
-void __init smp_callin(void)
-{
- int cpuid, phys_id;
- unsigned long timeout;
-
- /*
- * If waken up by an INIT in an 82489DX configuration
- * we may get here before an INIT-deassert IPI reaches
- * our local APIC. We have to wait for the IPI or we'll
- * lock up on an APIC access.
- */
- while (!atomic_read(&init_deasserted));
-
- /*
- * (This works even if the APIC is not enabled.)
- */
- phys_id = GET_APIC_ID(apic_read(APIC_ID));
- cpuid = smp_processor_id();
- if (cpu_isset(cpuid, cpu_callin_map)) {
- panic("smp_callin: phys CPU#%d, CPU#%d already present??\n",
- phys_id, cpuid);
- }
- Dprintk("CPU#%d (phys ID: %d) waiting for CALLOUT\n", cpuid, phys_id);
-
- /*
- * STARTUP IPIs are fragile beasts as they might sometimes
- * trigger some glue motherboard logic. Complete APIC bus
- * silence for 1 second, this overestimates the time the
- * boot CPU is spending to send the up to 2 STARTUP IPIs
- * by a factor of two. This should be enough.
- */
-
- /*
- * Waiting 2s total for startup (udelay is not yet working)
- */
- timeout = jiffies + 2*HZ;
- while (time_before(jiffies, timeout)) {
- /*
- * Has the boot CPU finished it's STARTUP sequence?
- */
- if (cpu_isset(cpuid, cpu_callout_map))
- break;
- rep_nop();
- }
-
- if (!time_before(jiffies, timeout)) {
- panic("smp_callin: CPU%d started up but did not get a
callout!\n",
- cpuid);
- }
-
- /*
- * the boot CPU has finished the init stage and is spinning
- * on callin_map until we finish. We are free to set up this
- * CPU, first the APIC. (this is probably redundant on most
- * boards)
- */
-
- Dprintk("CALLIN, before setup_local_APIC().\n");
- setup_local_APIC();
-
- local_irq_enable();
-
- /*
- * Get our bogomips.
- */
- calibrate_delay();
- Dprintk("Stack at about %p\n",&cpuid);
-
- disable_APIC_timer();
-
- /*
- * Save our processor parameters
- */
- smp_store_cpu_info(cpuid);
-
- local_irq_disable();
-
- /*
- * Allow the master to continue.
- */
- cpu_set(cpuid, cpu_callin_map);
-
- /*
- * Synchronize the TSC with the BP
- */
- if (cpu_has_tsc)
- synchronize_tsc_ap();
-}
-
-int cpucount;
-
-/*
- * Activate a secondary processor.
- */
-void __init start_secondary(void)
-{
- /*
- * Dont put anything before smp_callin(), SMP
- * booting is too fragile that we want to limit the
- * things done here to the most necessary things.
- */
- cpu_init();
- smp_callin();
-
- /* otherwise gcc will move up the smp_processor_id before the cpu_init
*/
- barrier();
-
- Dprintk("cpu %d: waiting for commence\n", smp_processor_id());
- while (!cpu_isset(smp_processor_id(), smp_commenced_mask))
- rep_nop();
-
- Dprintk("cpu %d: setting up apic clock\n", smp_processor_id());
- setup_secondary_APIC_clock();
-
- Dprintk("cpu %d: enabling apic timer\n", smp_processor_id());
-
- if (nmi_watchdog == NMI_IO_APIC) {
- disable_8259A_irq(0);
- enable_NMI_through_LVT0(NULL);
- enable_8259A_irq(0);
- }
-
-
- enable_APIC_timer();
-
- /*
- * low-memory mappings have been cleared, flush them from
- * the local TLBs too.
- */
- local_flush_tlb();
-
- Dprintk("cpu %d eSetting cpu_online_map\n", smp_processor_id());
- cpu_set(smp_processor_id(), cpu_online_map);
- wmb();
-
- cpu_idle();
-}
-
-extern volatile unsigned long init_rsp;
-extern void (*initial_code)(void);
-
-#if APIC_DEBUG
-static inline void inquire_remote_apic(int apicid)
-{
- unsigned i, regs[] = { APIC_ID >> 4, APIC_LVR >> 4, APIC_SPIV >> 4 };
- char *names[] = { "ID", "VERSION", "SPIV" };
- int timeout, status;
-
- printk(KERN_INFO "Inquiring remote APIC #%d...\n", apicid);
-
- for (i = 0; i < sizeof(regs) / sizeof(*regs); i++) {
- printk("... APIC #%d %s: ", apicid, names[i]);
-
- /*
- * Wait for idle.
- */
- apic_wait_icr_idle();
-
- apic_write_around(APIC_ICR2, SET_APIC_DEST_FIELD(apicid));
- apic_write_around(APIC_ICR, APIC_DM_REMRD | regs[i]);
-
- timeout = 0;
- do {
- udelay(100);
- status = apic_read(APIC_ICR) & APIC_ICR_RR_MASK;
- } while (status == APIC_ICR_RR_INPROG && timeout++ < 1000);
-
- switch (status) {
- case APIC_ICR_RR_VALID:
- status = apic_read(APIC_RRR);
- printk("%08x\n", status);
- break;
- default:
- printk("failed\n");
- }
- }
-}
-#endif
-
-static int __init wakeup_secondary_via_INIT(int phys_apicid, unsigned int
start_rip)
-{
- unsigned long send_status = 0, accept_status = 0;
- int maxlvt, timeout, num_starts, j;
-
- Dprintk("Asserting INIT.\n");
-
- /*
- * Turn INIT on target chip
- */
- apic_write_around(APIC_ICR2, SET_APIC_DEST_FIELD(phys_apicid));
-
- /*
- * Send IPI
- */
- apic_write_around(APIC_ICR, APIC_INT_LEVELTRIG | APIC_INT_ASSERT
- | APIC_DM_INIT);
-
- Dprintk("Waiting for send to finish...\n");
- timeout = 0;
- do {
- Dprintk("+");
- udelay(100);
- send_status = apic_read(APIC_ICR) & APIC_ICR_BUSY;
- } while (send_status && (timeout++ < 1000));
-
- mdelay(10);
-
- Dprintk("Deasserting INIT.\n");
-
- /* Target chip */
- apic_write_around(APIC_ICR2, SET_APIC_DEST_FIELD(phys_apicid));
-
- /* Send IPI */
- apic_write_around(APIC_ICR, APIC_INT_LEVELTRIG | APIC_DM_INIT);
-
- Dprintk("Waiting for send to finish...\n");
- timeout = 0;
- do {
- Dprintk("+");
- udelay(100);
- send_status = apic_read(APIC_ICR) & APIC_ICR_BUSY;
- } while (send_status && (timeout++ < 1000));
-
- atomic_set(&init_deasserted, 1);
-
- /*
- * Should we send STARTUP IPIs ?
- *
- * Determine this based on the APIC version.
- * If we don't have an integrated APIC, don't send the STARTUP IPIs.
- */
- if (APIC_INTEGRATED(apic_version[phys_apicid]))
- num_starts = 2;
- else
- num_starts = 0;
-
- /*
- * Run STARTUP IPI loop.
- */
- Dprintk("#startup loops: %d.\n", num_starts);
-
- maxlvt = get_maxlvt();
-
- for (j = 1; j <= num_starts; j++) {
- Dprintk("Sending STARTUP #%d.\n",j);
- apic_read_around(APIC_SPIV);
- apic_write(APIC_ESR, 0);
- apic_read(APIC_ESR);
- Dprintk("After apic_write.\n");
-
- /*
- * STARTUP IPI
- */
-
- /* Target chip */
- apic_write_around(APIC_ICR2, SET_APIC_DEST_FIELD(phys_apicid));
-
- /* Boot on the stack */
- /* Kick the second */
- apic_write_around(APIC_ICR, APIC_DM_STARTUP
- | (start_rip >> 12));
-
- /*
- * Give the other CPU some time to accept the IPI.
- */
- udelay(300);
-
- Dprintk("Startup point 1.\n");
-
- Dprintk("Waiting for send to finish...\n");
- timeout = 0;
- do {
- Dprintk("+");
- udelay(100);
- send_status = apic_read(APIC_ICR) & APIC_ICR_BUSY;
- } while (send_status && (timeout++ < 1000));
-
- /*
- * Give the other CPU some time to accept the IPI.
- */
- udelay(200);
- /*
- * Due to the Pentium erratum 3AP.
- */
- if (maxlvt > 3) {
- apic_read_around(APIC_SPIV);
- apic_write(APIC_ESR, 0);
- }
- accept_status = (apic_read(APIC_ESR) & 0xEF);
- if (send_status || accept_status)
- break;
- }
- Dprintk("After Startup.\n");
-
- if (send_status)
- printk(KERN_ERR "APIC never delivered???\n");
- if (accept_status)
- printk(KERN_ERR "APIC delivery error (%lx).\n", accept_status);
-
- return (send_status | accept_status);
-}
-
-static void __init do_boot_cpu (int apicid)
-{
- struct task_struct *idle;
- unsigned long boot_error;
- int timeout, cpu;
- unsigned long start_rip;
-
- cpu = ++cpucount;
- /*
- * We can't use kernel_thread since we must avoid to
- * reschedule the child.
- */
- idle = fork_idle(cpu);
- if (IS_ERR(idle))
- panic("failed fork for CPU %d", cpu);
- x86_cpu_to_apicid[cpu] = apicid;
-
- cpu_pda[cpu].pcurrent = idle;
-
- start_rip = setup_trampoline();
-
- init_rsp = idle->thread.rsp;
- per_cpu(init_tss,cpu).rsp0 = init_rsp;
- initial_code = start_secondary;
- clear_ti_thread_flag(idle->thread_info, TIF_FORK);
-
- printk(KERN_INFO "Booting processor %d/%d rip %lx rsp %lx\n", cpu,
apicid,
- start_rip, init_rsp);
-
- /*
- * This grunge runs the startup process for
- * the targeted processor.
- */
-
- atomic_set(&init_deasserted, 0);
-
- Dprintk("Setting warm reset code and vector.\n");
-
- CMOS_WRITE(0xa, 0xf);
- local_flush_tlb();
- Dprintk("1.\n");
- *((volatile unsigned short *) phys_to_virt(0x469)) = start_rip >> 4;
- Dprintk("2.\n");
- *((volatile unsigned short *) phys_to_virt(0x467)) = start_rip & 0xf;
- Dprintk("3.\n");
-
- /*
- * Be paranoid about clearing APIC errors.
- */
- if (APIC_INTEGRATED(apic_version[apicid])) {
- apic_read_around(APIC_SPIV);
- apic_write(APIC_ESR, 0);
- apic_read(APIC_ESR);
- }
-
- /*
- * Status is now clean
- */
- boot_error = 0;
-
- /*
- * Starting actual IPI sequence...
- */
- boot_error = wakeup_secondary_via_INIT(apicid, start_rip);
-
- if (!boot_error) {
- /*
- * allow APs to start initializing.
- */
- Dprintk("Before Callout %d.\n", cpu);
- cpu_set(cpu, cpu_callout_map);
- Dprintk("After Callout %d.\n", cpu);
-
- /*
- * Wait 5s total for a response
- */
- for (timeout = 0; timeout < 50000; timeout++) {
- if (cpu_isset(cpu, cpu_callin_map))
- break; /* It has booted */
- udelay(100);
- }
-
- if (cpu_isset(cpu, cpu_callin_map)) {
- /* number CPUs logically, starting from 1 (BSP is 0) */
- Dprintk("OK.\n");
- print_cpu_info(&cpu_data[cpu]);
- Dprintk("CPU has booted.\n");
- } else {
- boot_error = 1;
- if (*((volatile unsigned char
*)phys_to_virt(SMP_TRAMPOLINE_BASE))
- == 0xA5)
- /* trampoline started but...? */
- printk("Stuck ??\n");
- else
- /* trampoline code not run */
- printk("Not responding.\n");
-#if APIC_DEBUG
- inquire_remote_apic(apicid);
-#endif
- }
- }
- if (boot_error) {
- cpu_clear(cpu, cpu_callout_map); /* was set here
(do_boot_cpu()) */
- clear_bit(cpu, &cpu_initialized); /* was set by cpu_init() */
- cpucount--;
- x86_cpu_to_apicid[cpu] = BAD_APICID;
- x86_cpu_to_log_apicid[cpu] = BAD_APICID;
- }
-}
-
-cycles_t cacheflush_time;
-unsigned long cache_decay_ticks;
-
-static void smp_tune_scheduling (void)
-{
- int cachesize; /* kB */
- unsigned long bandwidth = 1000; /* MB/s */
- /*
- * Rough estimation for SMP scheduling, this is the number of
- * cycles it takes for a fully memory-limited process to flush
- * the SMP-local cache.
- *
- * (For a P5 this pretty much means we will choose another idle
- * CPU almost always at wakeup time (this is due to the small
- * L1 cache), on PIIs it's around 50-100 usecs, depending on
- * the cache size)
- */
-
- if (!cpu_khz) {
- /*
- * this basically disables processor-affinity
- * scheduling on SMP without a TSC.
- */
- cacheflush_time = 0;
- return;
- } else {
- cachesize = boot_cpu_data.x86_cache_size;
- if (cachesize == -1) {
- cachesize = 16; /* Pentiums, 2x8kB cache */
- bandwidth = 100;
- }
-
- cacheflush_time = (cpu_khz>>10) * (cachesize<<10) / bandwidth;
- }
-
- cache_decay_ticks = (long)cacheflush_time/cpu_khz * HZ / 1000;
-
- printk(KERN_INFO "per-CPU timeslice cutoff: %ld.%02ld usecs.\n",
- (long)cacheflush_time/(cpu_khz/1000),
- ((long)cacheflush_time*100/(cpu_khz/1000)) % 100);
- printk(KERN_INFO "task migration cache decay timeout: %ld msecs.\n",
- (cache_decay_ticks + 1) * 1000 / HZ);
-}
-
-/*
- * Cycle through the processors sending APIC IPIs to boot each.
- */
-
-static void __init smp_boot_cpus(unsigned int max_cpus)
-{
- unsigned apicid, cpu, bit, kicked;
-
- nmi_watchdog_default();
-
- /*
- * Setup boot CPU information
- */
- smp_store_cpu_info(0); /* Final full version of the data */
- printk(KERN_INFO "CPU%d: ", 0);
- print_cpu_info(&cpu_data[0]);
-
- current_thread_info()->cpu = 0;
- smp_tune_scheduling();
-
- if (!physid_isset(hard_smp_processor_id(), phys_cpu_present_map)) {
- printk("weird, boot CPU (#%d) not listed by the BIOS.\n",
- hard_smp_processor_id());
- physid_set(hard_smp_processor_id(), phys_cpu_present_map);
- }
-
- /*
- * If we couldn't find an SMP configuration at boot time,
- * get out of here now!
- */
- if (!smp_found_config) {
- printk(KERN_NOTICE "SMP motherboard not detected.\n");
- io_apic_irqs = 0;
- cpu_online_map = cpumask_of_cpu(0);
- phys_cpu_present_map = physid_mask_of_physid(0);
- if (APIC_init_uniprocessor())
- printk(KERN_NOTICE "Local APIC not detected."
- " Using dummy APIC emulation.\n");
- goto smp_done;
- }
-
- /*
- * Should not be necessary because the MP table should list the boot
- * CPU too, but we do it for the sake of robustness anyway.
- */
- if (!physid_isset(boot_cpu_id, phys_cpu_present_map)) {
- printk(KERN_NOTICE "weird, boot CPU (#%d) not listed by the
BIOS.\n",
- boot_cpu_id);
- physid_set(hard_smp_processor_id(), phys_cpu_present_map);
- }
-
- /*
- * If we couldn't find a local APIC, then get out of here now!
- */
- if (APIC_INTEGRATED(apic_version[boot_cpu_id]) && !cpu_has_apic) {
- printk(KERN_ERR "BIOS bug, local APIC #%d not detected!...\n",
- boot_cpu_id);
- printk(KERN_ERR "... forcing use of dummy APIC emulation. (tell
your hw vendor)\n");
- io_apic_irqs = 0;
- cpu_online_map = cpumask_of_cpu(0);
- phys_cpu_present_map = physid_mask_of_physid(0);
- disable_apic = 1;
- goto smp_done;
- }
-
- verify_local_APIC();
-
- /*
- * If SMP should be disabled, then really disable it!
- */
- if (!max_cpus) {
- smp_found_config = 0;
- printk(KERN_INFO "SMP mode deactivated, forcing use of dummy
APIC emulation.\n");
- io_apic_irqs = 0;
- cpu_online_map = cpumask_of_cpu(0);
- phys_cpu_present_map = physid_mask_of_physid(0);
- disable_apic = 1;
- goto smp_done;
- }
-
- connect_bsp_APIC();
- setup_local_APIC();
-
- if (GET_APIC_ID(apic_read(APIC_ID)) != boot_cpu_id)
- BUG();
-
- x86_cpu_to_apicid[0] = boot_cpu_id;
-
- /*
- * Now scan the CPU present map and fire up the other CPUs.
- */
- Dprintk("CPU present map: %lx\n", physids_coerce(phys_cpu_present_map));
-
- kicked = 1;
- for (bit = 0; kicked < NR_CPUS && bit < MAX_APICS; bit++) {
- apicid = cpu_present_to_apicid(bit);
- /*
- * Don't even attempt to start the boot CPU!
- */
- if (apicid == boot_cpu_id || (apicid == BAD_APICID))
- continue;
-
- if (!physid_isset(apicid, phys_cpu_present_map))
- continue;
- if ((max_cpus >= 0) && (max_cpus <= cpucount+1))
- continue;
-
- do_boot_cpu(apicid);
- ++kicked;
- }
-
- /*
- * Cleanup possible dangling ends...
- */
- {
- /*
- * Install writable page 0 entry to set BIOS data area.
- */
- local_flush_tlb();
-
- /*
- * Paranoid: Set warm reset code and vector here back
- * to default values.
- */
- CMOS_WRITE(0, 0xf);
-
- *((volatile int *) phys_to_virt(0x467)) = 0;
- }
-
- /*
- * Allow the user to impress friends.
- */
-
- Dprintk("Before bogomips.\n");
- if (!cpucount) {
- printk(KERN_INFO "Only one processor found.\n");
- } else {
- unsigned long bogosum = 0;
- for (cpu = 0; cpu < NR_CPUS; cpu++)
- if (cpu_isset(cpu, cpu_callout_map))
- bogosum += cpu_data[cpu].loops_per_jiffy;
- printk(KERN_INFO "Total of %d processors activated (%lu.%02lu
BogoMIPS).\n",
- cpucount+1,
- bogosum/(500000/HZ),
- (bogosum/(5000/HZ))%100);
- Dprintk("Before bogocount - setting activated=1.\n");
- }
-
- /*
- * Construct cpu_sibling_map[], so that we can tell the
- * sibling CPU efficiently.
- */
- for (cpu = 0; cpu < NR_CPUS; cpu++)
- cpus_clear(cpu_sibling_map[cpu]);
-
- for (cpu = 0; cpu < NR_CPUS; cpu++) {
- int siblings = 0;
- int i;
- if (!cpu_isset(cpu, cpu_callout_map))
- continue;
-
- if (smp_num_siblings > 1) {
- for (i = 0; i < NR_CPUS; i++) {
- if (!cpu_isset(i, cpu_callout_map))
- continue;
- if (phys_proc_id[cpu] == phys_proc_id[i]) {
- siblings++;
- cpu_set(i, cpu_sibling_map[cpu]);
- }
- }
- } else {
- siblings++;
- cpu_set(cpu, cpu_sibling_map[cpu]);
- }
-
- if (siblings != smp_num_siblings) {
- printk(KERN_WARNING
- "WARNING: %d siblings found for CPU%d, should be %d\n",
- siblings, cpu, smp_num_siblings);
- smp_num_siblings = siblings;
- }
- }
-
- Dprintk("Boot done.\n");
-
- /*
- * Here we can be sure that there is an IO-APIC in the system. Let's
- * go and set it up:
- */
- if (!skip_ioapic_setup && nr_ioapics)
- setup_IO_APIC();
- else
- nr_ioapics = 0;
-
- setup_boot_APIC_clock();
-
- /*
- * Synchronize the TSC with the AP
- */
- if (cpu_has_tsc && cpucount)
- synchronize_tsc_bp();
-
- smp_done:
- time_init_smp();
-}
-
-/* These are wrappers to interface to the new boot process. Someone
- who understands all this stuff should rewrite it properly. --RR 15/Jul/02 */
-void __init smp_prepare_cpus(unsigned int max_cpus)
-{
- smp_boot_cpus(max_cpus);
-}
-
-void __devinit smp_prepare_boot_cpu(void)
-{
- cpu_set(smp_processor_id(), cpu_online_map);
- cpu_set(smp_processor_id(), cpu_callout_map);
-}
-
-int __devinit __cpu_up(unsigned int cpu)
-{
- /* This only works at boot for x86. See "rewrite" above. */
- if (cpu_isset(cpu, smp_commenced_mask)) {
- local_irq_enable();
- return -ENOSYS;
- }
-
- /* In case one didn't come up */
- if (!cpu_isset(cpu, cpu_callin_map)) {
- local_irq_enable();
- return -EIO;
- }
- local_irq_enable();
-
- /* Unleash the CPU! */
- Dprintk("waiting for cpu %d\n", cpu);
-
- cpu_set(cpu, smp_commenced_mask);
- while (!cpu_isset(cpu, cpu_online_map))
- mb();
- return 0;
-}
-
-void __init smp_cpus_done(unsigned int max_cpus)
-{
-#ifdef CONFIG_X86_IO_APIC
- setup_ioapic_dest();
-#endif
- zap_low_mappings();
-}
-
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/traps.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/traps.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,975 +0,0 @@
-/*
- * linux/arch/x86-64/traps.c
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- * Copyright (C) 2000, 2001, 2002 Andi Kleen, SuSE Labs
- *
- * Pentium III FXSR, SSE support
- * Gareth Hughes <gareth@xxxxxxxxxxx>, May 2000
- *
- * $Id: traps.c,v 1.36 2002/03/24 11:09:10 ak Exp $
- */
-
-/*
- * 'Traps.c' handles hardware traps and faults after we have saved some
- * state in 'entry.S'.
- */
-#include <linux/config.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/ptrace.h>
-#include <linux/timer.h>
-#include <linux/mm.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/spinlock.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-
-#include <asm/system.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-#include <asm/atomic.h>
-#include <asm/debugreg.h>
-#include <asm/desc.h>
-#include <asm/i387.h>
-#include <asm/kdebug.h>
-#include <asm/processor.h>
-
-#include <asm/smp.h>
-#include <asm/pgalloc.h>
-#include <asm/pda.h>
-#include <asm/proto.h>
-#include <asm/nmi.h>
-
-#include <linux/irq.h>
-
-
-extern struct gate_struct idt_table[256];
-
-asmlinkage void divide_error(void);
-asmlinkage void debug(void);
-asmlinkage void nmi(void);
-asmlinkage void int3(void);
-asmlinkage void overflow(void);
-asmlinkage void bounds(void);
-asmlinkage void invalid_op(void);
-asmlinkage void device_not_available(void);
-asmlinkage void double_fault(void);
-asmlinkage void coprocessor_segment_overrun(void);
-asmlinkage void invalid_TSS(void);
-asmlinkage void segment_not_present(void);
-asmlinkage void stack_segment(void);
-asmlinkage void general_protection(void);
-asmlinkage void page_fault(void);
-asmlinkage void coprocessor_error(void);
-asmlinkage void simd_coprocessor_error(void);
-asmlinkage void reserved(void);
-asmlinkage void alignment_check(void);
-asmlinkage void machine_check(void);
-asmlinkage void spurious_interrupt_bug(void);
-asmlinkage void call_debug(void);
-
-struct notifier_block *die_chain;
-static DEFINE_SPINLOCK(die_notifier_lock);
-
-int register_die_notifier(struct notifier_block *nb)
-{
- int err = 0;
- unsigned long flags;
- spin_lock_irqsave(&die_notifier_lock, flags);
- err = notifier_chain_register(&die_chain, nb);
- spin_unlock_irqrestore(&die_notifier_lock, flags);
- return err;
-}
-
-static inline void conditional_sti(struct pt_regs *regs)
-{
- if (regs->eflags & X86_EFLAGS_IF)
- local_irq_enable();
-}
-
-static int kstack_depth_to_print = 10;
-
-#ifdef CONFIG_KALLSYMS
-#include <linux/kallsyms.h>
-int printk_address(unsigned long address)
-{
- unsigned long offset = 0, symsize;
- const char *symname;
- char *modname;
- char *delim = ":";
- char namebuf[128];
-
- symname = kallsyms_lookup(address, &symsize, &offset, &modname,
namebuf);
- if (!symname)
- return printk("[<%016lx>]", address);
- if (!modname)
- modname = delim = "";
- return printk("<%016lx>{%s%s%s%s%+ld}",
- address,delim,modname,delim,symname,offset);
-}
-#else
-int printk_address(unsigned long address)
-{
- return printk("[<%016lx>]", address);
-}
-#endif
-
-unsigned long *in_exception_stack(int cpu, unsigned long stack)
-{
- int k;
- for (k = 0; k < N_EXCEPTION_STACKS; k++) {
- struct tss_struct *tss = &per_cpu(init_tss, cpu);
- unsigned long end = tss->ist[k] + EXCEPTION_STKSZ;
-
- if (stack >= tss->ist[k] && stack <= end)
- return (unsigned long *)end;
- }
- return NULL;
-}
-
-/*
- * x86-64 can have upto three kernel stacks:
- * process stack
- * interrupt stack
- * severe exception (double fault, nmi, stack fault) hardware stack
- * Check and process them in order.
- */
-
-void show_trace(unsigned long *stack)
-{
- unsigned long addr;
- unsigned long *irqstack, *irqstack_end, *estack_end;
- const int cpu = safe_smp_processor_id();
- int i;
-
- printk("\nCall Trace:");
- i = 0;
-
- estack_end = in_exception_stack(cpu, (unsigned long)stack);
- if (estack_end) {
- while (stack < estack_end) {
- addr = *stack++;
- if (__kernel_text_address(addr)) {
- i += printk_address(addr);
- i += printk(" ");
- if (i > 50) {
- printk("\n");
- i = 0;
- }
- }
- }
- i += printk(" <EOE> ");
- i += 7;
- stack = (unsigned long *) estack_end[-2];
- }
-
- irqstack_end = (unsigned long *) (cpu_pda[cpu].irqstackptr);
- irqstack = (unsigned long *) (cpu_pda[cpu].irqstackptr - IRQSTACKSIZE +
64);
-
- if (stack >= irqstack && stack < irqstack_end) {
- printk("<IRQ> ");
- while (stack < irqstack_end) {
- addr = *stack++;
- /*
- * If the address is either in the text segment of the
- * kernel, or in the region which contains vmalloc'ed
- * memory, it *may* be the address of a calling
- * routine; if so, print it so that someone tracing
- * down the cause of the crash will be able to figure
- * out the call path that was taken.
- */
- if (__kernel_text_address(addr)) {
- i += printk_address(addr);
- i += printk(" ");
- if (i > 50) {
- printk("\n ");
- i = 0;
- }
- }
- }
- stack = (unsigned long *) (irqstack_end[-1]);
- printk(" <EOI> ");
- i += 7;
- }
-
- while (((long) stack & (THREAD_SIZE-1)) != 0) {
- addr = *stack++;
- if (__kernel_text_address(addr)) {
- i += printk_address(addr);
- i += printk(" ");
- if (i > 50) {
- printk("\n ");
- i = 0;
- }
- }
- }
- printk("\n");
-}
-
-void show_stack(struct task_struct *tsk, unsigned long * rsp)
-{
- unsigned long *stack;
- int i;
- const int cpu = safe_smp_processor_id();
- unsigned long *irqstack_end = (unsigned long *)
(cpu_pda[cpu].irqstackptr);
- unsigned long *irqstack = (unsigned long *) (cpu_pda[cpu].irqstackptr -
IRQSTACKSIZE);
-
- // debugging aid: "show_stack(NULL, NULL);" prints the
- // back trace for this cpu.
-
- if (rsp == NULL) {
- if (tsk)
- rsp = (unsigned long *)tsk->thread.rsp;
- else
- rsp = (unsigned long *)&rsp;
- }
-
- stack = rsp;
- for(i=0; i < kstack_depth_to_print; i++) {
- if (stack >= irqstack && stack <= irqstack_end) {
- if (stack == irqstack_end) {
- stack = (unsigned long *) (irqstack_end[-1]);
- printk(" <EOI> ");
- }
- } else {
- if (((long) stack & (THREAD_SIZE-1)) == 0)
- break;
- }
- if (i && ((i % 4) == 0))
- printk("\n ");
- printk("%016lx ", *stack++);
- }
- show_trace((unsigned long *)rsp);
-}
-
-/*
- * The architecture-independent dump_stack generator
- */
-void dump_stack(void)
-{
- unsigned long dummy;
- show_trace(&dummy);
-}
-
-EXPORT_SYMBOL(dump_stack);
-
-void show_registers(struct pt_regs *regs)
-{
- int i;
- int in_kernel = (regs->cs & 3) == 0;
- unsigned long rsp;
- const int cpu = safe_smp_processor_id();
- struct task_struct *cur = cpu_pda[cpu].pcurrent;
-
- rsp = regs->rsp;
-
- printk("CPU %d ", cpu);
- __show_regs(regs);
- printk("Process %s (pid: %d, threadinfo %p, task %p)\n",
- cur->comm, cur->pid, cur->thread_info, cur);
-
- /*
- * When in-kernel, we also print out the stack and code at the
- * time of the fault..
- */
- if (in_kernel) {
-
- printk("Stack: ");
- show_stack(NULL, (unsigned long*)rsp);
-
- printk("\nCode: ");
- if(regs->rip < PAGE_OFFSET)
- goto bad;
-
- for(i=0;i<20;i++)
- {
- unsigned char c;
- if(__get_user(c, &((unsigned char*)regs->rip)[i])) {
-bad:
- printk(" Bad RIP value.");
- break;
- }
- printk("%02x ", c);
- }
- }
- printk("\n");
-}
-
-void handle_BUG(struct pt_regs *regs)
-{
- struct bug_frame f;
- char tmp;
-
- if (regs->cs & 3)
- return;
- if (__copy_from_user(&f, (struct bug_frame *) regs->rip,
- sizeof(struct bug_frame)))
- return;
- if ((unsigned long)f.filename < __PAGE_OFFSET ||
- f.ud2[0] != 0x0f || f.ud2[1] != 0x0b)
- return;
- if (__get_user(tmp, f.filename))
- f.filename = "unmapped filename";
- printk("----------- [cut here ] --------- [please bite here ]
---------\n");
- printk(KERN_ALERT "Kernel BUG at %.50s:%d\n", f.filename, f.line);
-}
-
-void out_of_line_bug(void)
-{
- BUG();
-}
-
-static DEFINE_SPINLOCK(die_lock);
-static int die_owner = -1;
-
-void oops_begin(void)
-{
- int cpu = safe_smp_processor_id();
- /* racy, but better than risking deadlock. */
- local_irq_disable();
- if (!spin_trylock(&die_lock)) {
- if (cpu == die_owner)
- /* nested oops. should stop eventually */;
- else
- spin_lock(&die_lock);
- }
- die_owner = cpu;
- console_verbose();
- bust_spinlocks(1);
-}
-
-void oops_end(void)
-{
- die_owner = -1;
- bust_spinlocks(0);
- spin_unlock(&die_lock);
- local_irq_enable(); /* make sure back scroll still works */
- if (panic_on_oops)
- panic("Oops");
-}
-
-void __die(const char * str, struct pt_regs * regs, long err)
-{
- static int die_counter;
- printk(KERN_EMERG "%s: %04lx [%u] ", str, err & 0xffff,++die_counter);
-#ifdef CONFIG_PREEMPT
- printk("PREEMPT ");
-#endif
-#ifdef CONFIG_SMP
- printk("SMP ");
-#endif
-#ifdef CONFIG_DEBUG_PAGEALLOC
- printk("DEBUG_PAGEALLOC");
-#endif
- printk("\n");
- notify_die(DIE_OOPS, (char *)str, regs, err, 255, SIGSEGV);
- show_registers(regs);
- /* Executive summary in case the oops scrolled away */
- printk(KERN_ALERT "RIP ");
- printk_address(regs->rip);
- printk(" RSP <%016lx>\n", regs->rsp);
-}
-
-void die(const char * str, struct pt_regs * regs, long err)
-{
- oops_begin();
- handle_BUG(regs);
- __die(str, regs, err);
- oops_end();
- do_exit(SIGSEGV);
-}
-static inline void die_if_kernel(const char * str, struct pt_regs * regs, long
err)
-{
- if (!(regs->eflags & VM_MASK) && (regs->cs == __KERNEL_CS))
- die(str, regs, err);
-}
-
-#ifdef CONFIG_X86_LOCAL_APIC
-void die_nmi(char *str, struct pt_regs *regs)
-{
- oops_begin();
- /*
- * We are in trouble anyway, lets at least try
- * to get a message out.
- */
- printk(str, safe_smp_processor_id());
- show_registers(regs);
- if (panic_on_timeout || panic_on_oops)
- panic("nmi watchdog");
- printk("console shuts up ...\n");
- oops_end();
- do_exit(SIGSEGV);
-}
-#endif
-
-static void do_trap(int trapnr, int signr, char *str,
- struct pt_regs * regs, long error_code, siginfo_t
*info)
-{
- conditional_sti(regs);
-
-#ifdef CONFIG_CHECKING
- {
- unsigned long gs;
- struct x8664_pda *pda = cpu_pda + safe_smp_processor_id();
- rdmsrl(MSR_GS_BASE, gs);
- if (gs != (unsigned long)pda) {
- wrmsrl(MSR_GS_BASE, pda);
- printk("%s: wrong gs %lx expected %p rip %lx\n", str,
gs, pda,
- regs->rip);
- }
- }
-#endif
-
- if ((regs->cs & 3) != 0) {
- struct task_struct *tsk = current;
-
- if (exception_trace && unhandled_signal(tsk, signr))
- printk(KERN_INFO
- "%s[%d] trap %s rip:%lx rsp:%lx error:%lx\n",
- tsk->comm, tsk->pid, str,
- regs->rip,regs->rsp,error_code);
-
- tsk->thread.error_code = error_code;
- tsk->thread.trap_no = trapnr;
- if (info)
- force_sig_info(signr, info, tsk);
- else
- force_sig(signr, tsk);
- return;
- }
-
-
- /* kernel trap */
- {
- const struct exception_table_entry *fixup;
- fixup = search_exception_tables(regs->rip);
- if (fixup) {
- regs->rip = fixup->fixup;
- } else
- die(str, regs, error_code);
- return;
- }
-}
-
-#define DO_ERROR(trapnr, signr, str, name) \
-asmlinkage void do_##name(struct pt_regs * regs, long error_code) \
-{ \
- if (notify_die(DIE_TRAP, str, regs, error_code, trapnr, signr) \
- == NOTIFY_STOP) \
- return; \
- do_trap(trapnr, signr, str, regs, error_code, NULL); \
-}
-
-#define DO_ERROR_INFO(trapnr, signr, str, name, sicode, siaddr) \
-asmlinkage void do_##name(struct pt_regs * regs, long error_code) \
-{ \
- siginfo_t info; \
- info.si_signo = signr; \
- info.si_errno = 0; \
- info.si_code = sicode; \
- info.si_addr = (void __user *)siaddr; \
- if (notify_die(DIE_TRAP, str, regs, error_code, trapnr, signr) \
- == NOTIFY_STOP) \
- return; \
- do_trap(trapnr, signr, str, regs, error_code, &info); \
-}
-
-DO_ERROR_INFO( 0, SIGFPE, "divide error", divide_error, FPE_INTDIV, regs->rip)
-DO_ERROR( 4, SIGSEGV, "overflow", overflow)
-DO_ERROR( 5, SIGSEGV, "bounds", bounds)
-DO_ERROR_INFO( 6, SIGILL, "invalid operand", invalid_op, ILL_ILLOPN,
regs->rip)
-DO_ERROR( 7, SIGSEGV, "device not available", device_not_available)
-DO_ERROR( 9, SIGFPE, "coprocessor segment overrun",
coprocessor_segment_overrun)
-DO_ERROR(10, SIGSEGV, "invalid TSS", invalid_TSS)
-DO_ERROR(11, SIGBUS, "segment not present", segment_not_present)
-DO_ERROR_INFO(17, SIGBUS, "alignment check", alignment_check, BUS_ADRALN, 0)
-DO_ERROR(18, SIGSEGV, "reserved", reserved)
-
-#define DO_ERROR_STACK(trapnr, signr, str, name) \
-asmlinkage void *do_##name(struct pt_regs * regs, long error_code) \
-{ \
- struct pt_regs *pr = ((struct pt_regs *)(current->thread.rsp0))-1; \
- if (notify_die(DIE_TRAP, str, regs, error_code, trapnr, signr) \
- == NOTIFY_STOP) \
- return regs; \
- if (regs->cs & 3) { \
- memcpy(pr, regs, sizeof(struct pt_regs)); \
- regs = pr; \
- } \
- do_trap(trapnr, signr, str, regs, error_code, NULL); \
- return regs; \
-}
-
-DO_ERROR_STACK(12, SIGBUS, "stack segment", stack_segment)
-DO_ERROR_STACK( 8, SIGSEGV, "double fault", double_fault)
-
-asmlinkage void do_general_protection(struct pt_regs * regs, long error_code)
-{
- conditional_sti(regs);
-
-#ifdef CONFIG_CHECKING
- {
- unsigned long gs;
- struct x8664_pda *pda = cpu_pda + safe_smp_processor_id();
- rdmsrl(MSR_GS_BASE, gs);
- if (gs != (unsigned long)pda) {
- wrmsrl(MSR_GS_BASE, pda);
- oops_in_progress++;
- printk("general protection handler: wrong gs %lx
expected %p\n", gs, pda);
- oops_in_progress--;
- }
- }
-#endif
-
- if ((regs->cs & 3)!=0) {
- struct task_struct *tsk = current;
-
- if (exception_trace && unhandled_signal(tsk, SIGSEGV))
- printk(KERN_INFO
- "%s[%d] general protection rip:%lx rsp:%lx error:%lx\n",
- tsk->comm, tsk->pid,
- regs->rip,regs->rsp,error_code);
-
- tsk->thread.error_code = error_code;
- tsk->thread.trap_no = 13;
- force_sig(SIGSEGV, tsk);
- return;
- }
-
- /* kernel gp */
- {
- const struct exception_table_entry *fixup;
- fixup = search_exception_tables(regs->rip);
- if (fixup) {
- regs->rip = fixup->fixup;
- return;
- }
- if (notify_die(DIE_GPF, "general protection fault", regs,
- error_code, 13, SIGSEGV) == NOTIFY_STOP)
- return;
- die("general protection fault", regs, error_code);
- }
-}
-
-static void mem_parity_error(unsigned char reason, struct pt_regs * regs)
-{
- printk("Uhhuh. NMI received. Dazed and confused, but trying to
continue\n");
- printk("You probably have a hardware problem with your RAM chips\n");
-
- /* Clear and disable the memory parity error line. */
- reason = (reason & 0xf) | 4;
- outb(reason, 0x61);
-}
-
-static void io_check_error(unsigned char reason, struct pt_regs * regs)
-{
- printk("NMI: IOCK error (debug interrupt?)\n");
- show_registers(regs);
-
- /* Re-enable the IOCK line, wait for a few seconds */
- reason = (reason & 0xf) | 8;
- outb(reason, 0x61);
- mdelay(2000);
- reason &= ~8;
- outb(reason, 0x61);
-}
-
-static void unknown_nmi_error(unsigned char reason, struct pt_regs * regs)
-{ printk("Uhhuh. NMI received for unknown reason %02x.\n", reason);
- printk("Dazed and confused, but trying to continue\n");
- printk("Do you have a strange power saving mode enabled?\n");
-}
-
-asmlinkage void default_do_nmi(struct pt_regs *regs)
-{
- unsigned char reason = 0;
-
- /* Only the BSP gets external NMIs from the system. */
- if (!smp_processor_id())
- reason = get_nmi_reason();
-
- if (!(reason & 0xc0)) {
- if (notify_die(DIE_NMI_IPI, "nmi_ipi", regs, reason, 0, SIGINT)
- == NOTIFY_STOP)
- return;
-#ifdef CONFIG_X86_LOCAL_APIC
- /*
- * Ok, so this is none of the documented NMI sources,
- * so it must be the NMI watchdog.
- */
- if (nmi_watchdog > 0) {
- nmi_watchdog_tick(regs,reason);
- return;
- }
-#endif
- unknown_nmi_error(reason, regs);
- return;
- }
- if (notify_die(DIE_NMI, "nmi", regs, reason, 0, SIGINT) == NOTIFY_STOP)
- return;
-
- /* AK: following checks seem to be broken on modern chipsets. FIXME */
-
- if (reason & 0x80)
- mem_parity_error(reason, regs);
- if (reason & 0x40)
- io_check_error(reason, regs);
-
- /*
- * Reassert NMI in case it became active meanwhile
- * as it's edge-triggered.
- */
- outb(0x8f, 0x70);
- inb(0x71); /* dummy */
- outb(0x0f, 0x70);
- inb(0x71); /* dummy */
-}
-
-asmlinkage void do_int3(struct pt_regs * regs, long error_code)
-{
- if (notify_die(DIE_INT3, "int3", regs, error_code, 3, SIGTRAP) ==
NOTIFY_STOP) {
- return;
- }
- do_trap(3, SIGTRAP, "int3", regs, error_code, NULL);
- return;
-}
-
-/* runs on IST stack. */
-asmlinkage void *do_debug(struct pt_regs * regs, unsigned long error_code)
-{
- struct pt_regs *pr;
- unsigned long condition;
- struct task_struct *tsk = current;
- siginfo_t info;
-
- pr = (struct pt_regs *)(current->thread.rsp0)-1;
- if (regs->cs & 3) {
- memcpy(pr, regs, sizeof(struct pt_regs));
- regs = pr;
- }
-
-#ifdef CONFIG_CHECKING
- {
- /* RED-PEN interaction with debugger - could destroy gs */
- unsigned long gs;
- struct x8664_pda *pda = cpu_pda + safe_smp_processor_id();
- rdmsrl(MSR_GS_BASE, gs);
- if (gs != (unsigned long)pda) {
- wrmsrl(MSR_GS_BASE, pda);
- printk("debug handler: wrong gs %lx expected %p\n", gs,
pda);
- }
- }
-#endif
-
- asm("movq %%db6,%0" : "=r" (condition));
-
- if (notify_die(DIE_DEBUG, "debug", regs, condition, error_code,
- SIGTRAP) == NOTIFY_STOP) {
- return regs;
- }
- conditional_sti(regs);
-
- /* Mask out spurious debug traps due to lazy DR7 setting */
- if (condition & (DR_TRAP0|DR_TRAP1|DR_TRAP2|DR_TRAP3)) {
- if (!tsk->thread.debugreg7) {
- goto clear_dr7;
- }
- }
-
- tsk->thread.debugreg6 = condition;
-
- /* Mask out spurious TF errors due to lazy TF clearing */
- if ((condition & DR_STEP) &&
- (notify_die(DIE_DEBUGSTEP, "debugstep", regs, condition,
- 1, SIGTRAP) != NOTIFY_STOP)) {
- /*
- * The TF error should be masked out only if the current
- * process is not traced and if the TRAP flag has been set
- * previously by a tracing process (condition detected by
- * the PT_DTRACE flag); remember that the i386 TRAP flag
- * can be modified by the process itself in user mode,
- * allowing programs to debug themselves without the ptrace()
- * interface.
- */
- if ((regs->cs & 3) == 0)
- goto clear_TF_reenable;
- if ((tsk->ptrace & (PT_DTRACE|PT_PTRACED)) == PT_DTRACE)
- goto clear_TF;
- }
-
- /* Ok, finally something we can handle */
- tsk->thread.trap_no = 1;
- tsk->thread.error_code = error_code;
- info.si_signo = SIGTRAP;
- info.si_errno = 0;
- info.si_code = TRAP_BRKPT;
- if ((regs->cs & 3) == 0)
- goto clear_dr7;
-
- info.si_addr = (void __user *)regs->rip;
- force_sig_info(SIGTRAP, &info, tsk);
-clear_dr7:
- asm volatile("movq %0,%%db7"::"r"(0UL));
- notify_die(DIE_DEBUG, "debug", regs, condition, 1, SIGTRAP);
- return regs;
-
-clear_TF_reenable:
- set_tsk_thread_flag(tsk, TIF_SINGLESTEP);
-
-clear_TF:
- /* RED-PEN could cause spurious errors */
- if (notify_die(DIE_DEBUG, "debug2", regs, condition, 1, SIGTRAP)
- != NOTIFY_STOP)
- regs->eflags &= ~TF_MASK;
- return regs;
-}
-
-static int kernel_math_error(struct pt_regs *regs, char *str)
-{
- const struct exception_table_entry *fixup;
- fixup = search_exception_tables(regs->rip);
- if (fixup) {
- regs->rip = fixup->fixup;
- return 1;
- }
- notify_die(DIE_GPF, str, regs, 0, 16, SIGFPE);
-#if 0
- /* This should be a die, but warn only for now */
- die(str, regs, 0);
-#else
- printk(KERN_DEBUG "%s: %s at ", current->comm, str);
- printk_address(regs->rip);
- printk("\n");
-#endif
- return 0;
-}
-
-/*
- * Note that we play around with the 'TS' bit in an attempt to get
- * the correct behaviour even in the presence of the asynchronous
- * IRQ13 behaviour
- */
-asmlinkage void do_coprocessor_error(struct pt_regs *regs)
-{
- void __user *rip = (void __user *)(regs->rip);
- struct task_struct * task;
- siginfo_t info;
- unsigned short cwd, swd;
-
- conditional_sti(regs);
- if ((regs->cs & 3) == 0 &&
- kernel_math_error(regs, "kernel x87 math error"))
- return;
-
- /*
- * Save the info for the exception handler and clear the error.
- */
- task = current;
- save_init_fpu(task);
- task->thread.trap_no = 16;
- task->thread.error_code = 0;
- info.si_signo = SIGFPE;
- info.si_errno = 0;
- info.si_code = __SI_FAULT;
- info.si_addr = rip;
- /*
- * (~cwd & swd) will mask out exceptions that are not set to unmasked
- * status. 0x3f is the exception bits in these regs, 0x200 is the
- * C1 reg you need in case of a stack fault, 0x040 is the stack
- * fault bit. We should only be taking one exception at a time,
- * so if this combination doesn't produce any single exception,
- * then we have a bad program that isn't synchronizing its FPU usage
- * and it will suffer the consequences since we won't be able to
- * fully reproduce the context of the exception
- */
- cwd = get_fpu_cwd(task);
- swd = get_fpu_swd(task);
- switch (((~cwd) & swd & 0x3f) | (swd & 0x240)) {
- case 0x000:
- default:
- break;
- case 0x001: /* Invalid Op */
- case 0x041: /* Stack Fault */
- case 0x241: /* Stack Fault | Direction */
- info.si_code = FPE_FLTINV;
- break;
- case 0x002: /* Denormalize */
- case 0x010: /* Underflow */
- info.si_code = FPE_FLTUND;
- break;
- case 0x004: /* Zero Divide */
- info.si_code = FPE_FLTDIV;
- break;
- case 0x008: /* Overflow */
- info.si_code = FPE_FLTOVF;
- break;
- case 0x020: /* Precision */
- info.si_code = FPE_FLTRES;
- break;
- }
- force_sig_info(SIGFPE, &info, task);
-}
-
-asmlinkage void bad_intr(void)
-{
- printk("bad interrupt");
-}
-
-asmlinkage void do_simd_coprocessor_error(struct pt_regs *regs)
-{
- void __user *rip = (void __user *)(regs->rip);
- struct task_struct * task;
- siginfo_t info;
- unsigned short mxcsr;
-
- conditional_sti(regs);
- if ((regs->cs & 3) == 0 &&
- kernel_math_error(regs, "simd math error"))
- return;
-
- /*
- * Save the info for the exception handler and clear the error.
- */
- task = current;
- save_init_fpu(task);
- task->thread.trap_no = 19;
- task->thread.error_code = 0;
- info.si_signo = SIGFPE;
- info.si_errno = 0;
- info.si_code = __SI_FAULT;
- info.si_addr = rip;
- /*
- * The SIMD FPU exceptions are handled a little differently, as there
- * is only a single status/control register. Thus, to determine which
- * unmasked exception was caught we must mask the exception mask bits
- * at 0x1f80, and then use these to mask the exception bits at 0x3f.
- */
- mxcsr = get_fpu_mxcsr(task);
- switch (~((mxcsr & 0x1f80) >> 7) & (mxcsr & 0x3f)) {
- case 0x000:
- default:
- break;
- case 0x001: /* Invalid Op */
- info.si_code = FPE_FLTINV;
- break;
- case 0x002: /* Denormalize */
- case 0x010: /* Underflow */
- info.si_code = FPE_FLTUND;
- break;
- case 0x004: /* Zero Divide */
- info.si_code = FPE_FLTDIV;
- break;
- case 0x008: /* Overflow */
- info.si_code = FPE_FLTOVF;
- break;
- case 0x020: /* Precision */
- info.si_code = FPE_FLTRES;
- break;
- }
- force_sig_info(SIGFPE, &info, task);
-}
-
-asmlinkage void do_spurious_interrupt_bug(struct pt_regs * regs)
-{
-}
-
-#if 0
-asmlinkage void __attribute__((weak)) smp_thermal_interrupt(void)
-{
-}
-#endif
-
-/*
- * 'math_state_restore()' saves the current math information in the
- * old math state array, and gets the new ones from the current task
- *
- * Careful.. There are problems with IBM-designed IRQ13 behaviour.
- * Don't touch unless you *really* know how it works.
- */
-asmlinkage void math_state_restore(void)
-{
- struct task_struct *me = current;
-
- /* clts(); */ /* 'clts' is done for us by Xen during virtual trap. */
-
- if (!used_math())
- init_fpu(me);
- restore_fpu_checking(&me->thread.i387.fxsave);
- me->thread_info->status |= TS_USEDFPU;
-}
-
-void do_call_debug(struct pt_regs *regs)
-{
- notify_die(DIE_CALL, "debug call", regs, 0, 255, SIGINT);
-}
-
-
-static trap_info_t trap_table[] = {
- { 0, 0, (__KERNEL_CS|0x3), (unsigned long)divide_error
},
- { 1, 0, (__KERNEL_CS|0x3), (unsigned long)debug
},
- { 3, 3, (__KERNEL_CS|0x3), (unsigned long)int3
},
- { 4, 3, (__KERNEL_CS|0x3), (unsigned long)overflow
},
- { 5, 3, (__KERNEL_CS|0x3), (unsigned long)bounds
},
- { 6, 0, (__KERNEL_CS|0x3), (unsigned long)invalid_op
},
- { 7, 0, (__KERNEL_CS|0x3), (unsigned long)device_not_available
},
- { 9, 0, (__KERNEL_CS|0x3), (unsigned
long)coprocessor_segment_overrun},
- { 10, 0, (__KERNEL_CS|0x3), (unsigned long)invalid_TSS
},
- { 11, 0, (__KERNEL_CS|0x3), (unsigned long)segment_not_present
},
- { 12, 0, (__KERNEL_CS|0x3), (unsigned long)stack_segment
},
- { 13, 0, (__KERNEL_CS|0x3), (unsigned long)general_protection
},
- { 14, 0, (__KERNEL_CS|0x3), (unsigned long)page_fault
},
- { 15, 0, (__KERNEL_CS|0x3), (unsigned long)spurious_interrupt_bug
},
- { 16, 0, (__KERNEL_CS|0x3), (unsigned long)coprocessor_error
},
- { 17, 0, (__KERNEL_CS|0x3), (unsigned long)alignment_check
},
-#ifdef CONFIG_X86_MCE
- { 18, 0, (__KERNEL_CS|0x3), (unsigned long)machine_check
},
-#endif
- { 19, 0, (__KERNEL_CS|0x3), (unsigned long)simd_coprocessor_error
},
- { SYSCALL_VECTOR, 3, (__KERNEL_CS|0x3), (unsigned long)system_call },
-#ifdef CONFIG_IA32_EMULATION
- { IA32_SYSCALL_VECTOR, 3, (__KERNEL_CS|0x3), (unsigned
long)ia32_syscall},
-#endif
- { 0, 0, 0, 0 }
-};
-
-void __init trap_init(void)
-{
- int ret;
-
- ret = HYPERVISOR_set_trap_table(trap_table);
-
- if (ret)
- printk("HYPERVISOR_set_trap_table faild: error %d\n",
- ret);
-
-#ifdef CONFIG_IA32_EMULATION
- set_system_gate(IA32_SYSCALL_VECTOR, ia32_syscall);
-#endif
-
- /*
- * Should be a barrier for any external CPU state.
- */
- cpu_init();
-}
-
-
-/* Actual parsing is done early in setup.c. */
-static int __init oops_dummy(char *s)
-{
- panic_on_oops = 1;
- return -1;
-}
-__setup("oops=", oops_dummy);
-
-static int __init kstack_setup(char *s)
-{
- kstack_depth_to_print = simple_strtoul(s,NULL,0);
- return 0;
-}
-__setup("kstack=", kstack_setup);
-
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/vsyscall.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/vsyscall.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,190 +0,0 @@
-/*
- * linux/arch/x86_64/kernel/vsyscall.c
- *
- * Copyright (C) 2001 Andrea Arcangeli <andrea@xxxxxxx> SuSE
- * Copyright 2003 Andi Kleen, SuSE Labs.
- *
- * Thanks to hpa@xxxxxxxxxxxxx for some useful hint.
- * Special thanks to Ingo Molnar for his early experience with
- * a different vsyscall implementation for Linux/IA32 and for the name.
- *
- * vsyscall 1 is located at -10Mbyte, vsyscall 2 is located
- * at virtual address -10Mbyte+1024bytes etc... There are at max 8192
- * vsyscalls. One vsyscall can reserve more than 1 slot to avoid
- * jumping out of line if necessary.
- *
- * Note: the concept clashes with user mode linux. If you use UML just
- * set the kernel.vsyscall sysctl to 0.
- */
-
-/*
- * TODO 2001-03-20:
- *
- * 1) make page fault handler detect faults on page1-page-last of the vsyscall
- * virtual space, and make it increase %rip and write -ENOSYS in %rax (so
- * we'll be able to upgrade to a new glibc without upgrading kernel after
- * we add more vsyscalls.
- * 2) Possibly we need a fixmap table for the vsyscalls too if we want
- * to avoid SIGSEGV and we want to return -EFAULT from the vsyscalls as
well.
- * Can we segfault inside a "syscall"? We can fix this anytime and those
fixes
- * won't be visible for userspace. Not fixing this is a noop for correct
programs,
- * broken programs will segfault and there's no security risk until we
choose to
- * fix it.
- *
- * These are not urgent things that we need to address only before shipping
the first
- * production binary kernels.
- */
-
-#include <linux/time.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/timer.h>
-#include <linux/seqlock.h>
-#include <linux/jiffies.h>
-
-#include <asm/vsyscall.h>
-#include <asm/pgtable.h>
-#include <asm/page.h>
-#include <asm/fixmap.h>
-#include <asm/errno.h>
-#include <asm/io.h>
-
-#define __vsyscall(nr) __attribute__ ((unused,__section__(".vsyscall_" #nr)))
-#define force_inline __attribute__((always_inline)) inline
-
-int __sysctl_vsyscall __section_sysctl_vsyscall = 1;
-seqlock_t __xtime_lock __section_xtime_lock = SEQLOCK_UNLOCKED;
-
-#include <asm/unistd.h>
-
-static force_inline void timeval_normalize(struct timeval * tv)
-{
- time_t __sec;
-
- __sec = tv->tv_usec / 1000000;
- if (__sec)
- {
- tv->tv_usec %= 1000000;
- tv->tv_sec += __sec;
- }
-}
-
-static force_inline void do_vgettimeofday(struct timeval * tv)
-{
- long sequence, t;
- unsigned long sec, usec;
-
- do {
- sequence = read_seqbegin(&__xtime_lock);
-
- sec = __xtime.tv_sec;
- usec = (__xtime.tv_nsec / 1000) +
- (__jiffies - __wall_jiffies) * (1000000 / HZ);
-
- if (__vxtime.mode == VXTIME_TSC) {
- sync_core();
- rdtscll(t);
- if (t < __vxtime.last_tsc) t = __vxtime.last_tsc;
- usec += ((t - __vxtime.last_tsc) *
- __vxtime.tsc_quot) >> 32;
- /* See comment in x86_64 do_gettimeofday. */
- } else {
- usec += ((readl((void *)fix_to_virt(VSYSCALL_HPET) +
0xf0) -
- __vxtime.last) * __vxtime.quot) >> 32;
- }
- } while (read_seqretry(&__xtime_lock, sequence));
-
- tv->tv_sec = sec + usec / 1000000;
- tv->tv_usec = usec % 1000000;
-}
-
-/* RED-PEN may want to readd seq locking, but then the variable should be
write-once. */
-static force_inline void do_get_tz(struct timezone * tz)
-{
- *tz = __sys_tz;
-}
-
-
-static force_inline int gettimeofday(struct timeval *tv, struct timezone *tz)
-{
- int ret;
- asm volatile("syscall"
- : "=a" (ret)
- : "0" (__NR_gettimeofday),"D" (tv),"S" (tz) : __syscall_clobber
);
- return ret;
-}
-
-static force_inline long time_syscall(long *t)
-{
- long secs;
- asm volatile("syscall"
- : "=a" (secs)
- : "0" (__NR_time),"D" (t) : __syscall_clobber);
- return secs;
-}
-
-static int __vsyscall(0) vgettimeofday(struct timeval * tv, struct timezone *
tz)
-{
- if (unlikely(!__sysctl_vsyscall))
- return gettimeofday(tv,tz);
- if (tv)
- do_vgettimeofday(tv);
- if (tz)
- do_get_tz(tz);
- return 0;
-}
-
-/* This will break when the xtime seconds get inaccurate, but that is
- * unlikely */
-static time_t __vsyscall(1) vtime(time_t *t)
-{
- if (unlikely(!__sysctl_vsyscall))
- return time_syscall(t);
- else if (t)
- *t = __xtime.tv_sec;
- return __xtime.tv_sec;
-}
-
-static long __vsyscall(2) venosys_0(void)
-{
- return -ENOSYS;
-}
-
-static long __vsyscall(3) venosys_1(void)
-{
- return -ENOSYS;
-
-}
-
-static void __init map_vsyscall(void)
-{
- extern char __vsyscall_0;
- unsigned long physaddr_page0 = __pa_symbol(&__vsyscall_0);
-
- __set_fixmap(VSYSCALL_FIRST_PAGE, physaddr_page0, PAGE_KERNEL_VSYSCALL);
-}
-
-extern void __set_fixmap_user (enum fixed_addresses, unsigned long, pgprot_t);
-
-static void __init map_vsyscall_user(void)
-{
- extern char __vsyscall_0;
- unsigned long physaddr_page0 = __pa_symbol(&__vsyscall_0);
-
- __set_fixmap_user(VSYSCALL_FIRST_PAGE, physaddr_page0,
PAGE_KERNEL_VSYSCALL);
-}
-
-static int __init vsyscall_init(void)
-{
- BUG_ON(((unsigned long) &vgettimeofday !=
- VSYSCALL_ADDR(__NR_vgettimeofday)));
- BUG_ON((unsigned long) &vtime != VSYSCALL_ADDR(__NR_vtime));
- BUG_ON((VSYSCALL_ADDR(0) != __fix_to_virt(VSYSCALL_FIRST_PAGE)));
- map_vsyscall();
- map_vsyscall_user(); /* establish tranlation for user address space
*/
- sysctl_vsyscall = 0; /* TBD */
-
- return 0;
-}
-
-__initcall(vsyscall_init);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/x8664_ksyms.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/x8664_ksyms.c Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,225 +0,0 @@
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/smp.h>
-#include <linux/user.h>
-#include <linux/sched.h>
-#include <linux/in6.h>
-#include <linux/interrupt.h>
-#include <linux/smp_lock.h>
-#include <linux/pm.h>
-#include <linux/pci.h>
-#include <linux/apm_bios.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/syscalls.h>
-#include <linux/tty.h>
-#include <linux/ioctl32.h>
-
-#include <asm/semaphore.h>
-#include <asm/processor.h>
-#include <asm/i387.h>
-#include <asm/uaccess.h>
-#include <asm/checksum.h>
-#include <asm/io.h>
-#include <asm/delay.h>
-#include <asm/irq.h>
-#include <asm/mmx.h>
-#include <asm/desc.h>
-#include <asm/pgtable.h>
-#include <asm/pgalloc.h>
-#include <asm/nmi.h>
-#include <asm/kdebug.h>
-#include <asm/unistd.h>
-#include <asm/tlbflush.h>
-#include <asm/kdebug.h>
-
-extern spinlock_t rtc_lock;
-
-#ifdef CONFIG_SMP
-extern void __write_lock_failed(rwlock_t *rw);
-extern void __read_lock_failed(rwlock_t *rw);
-#endif
-
-#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_HD) ||
defined(CONFIG_BLK_DEV_IDE_MODULE) || defined(CONFIG_BLK_DEV_HD_MODULE)
-extern struct drive_info_struct drive_info;
-EXPORT_SYMBOL(drive_info);
-#endif
-
-extern unsigned long get_cmos_time(void);
-
-/* platform dependent support */
-EXPORT_SYMBOL(boot_cpu_data);
-//EXPORT_SYMBOL(dump_fpu);
-EXPORT_SYMBOL(__ioremap);
-EXPORT_SYMBOL(ioremap_nocache);
-EXPORT_SYMBOL(iounmap);
-EXPORT_SYMBOL(enable_irq);
-EXPORT_SYMBOL(disable_irq);
-EXPORT_SYMBOL(disable_irq_nosync);
-EXPORT_SYMBOL(probe_irq_mask);
-EXPORT_SYMBOL(kernel_thread);
-EXPORT_SYMBOL(pm_idle);
-#ifdef CONFIG_ACPI_BOOT
-EXPORT_SYMBOL(pm_power_off);
-#endif
-EXPORT_SYMBOL(get_cmos_time);
-
-EXPORT_SYMBOL(__down_failed);
-EXPORT_SYMBOL(__down_failed_interruptible);
-EXPORT_SYMBOL(__down_failed_trylock);
-EXPORT_SYMBOL(__up_wakeup);
-/* Networking helper routines. */
-EXPORT_SYMBOL(csum_partial_copy_nocheck);
-EXPORT_SYMBOL(ip_compute_csum);
-/* Delay loops */
-EXPORT_SYMBOL(__udelay);
-EXPORT_SYMBOL(__ndelay);
-EXPORT_SYMBOL(__delay);
-EXPORT_SYMBOL(__const_udelay);
-
-EXPORT_SYMBOL(__get_user_1);
-EXPORT_SYMBOL(__get_user_2);
-EXPORT_SYMBOL(__get_user_4);
-EXPORT_SYMBOL(__get_user_8);
-EXPORT_SYMBOL(__put_user_1);
-EXPORT_SYMBOL(__put_user_2);
-EXPORT_SYMBOL(__put_user_4);
-EXPORT_SYMBOL(__put_user_8);
-
-EXPORT_SYMBOL(strpbrk);
-EXPORT_SYMBOL(strstr);
-
-EXPORT_SYMBOL(strncpy_from_user);
-EXPORT_SYMBOL(__strncpy_from_user);
-EXPORT_SYMBOL(clear_user);
-EXPORT_SYMBOL(__clear_user);
-EXPORT_SYMBOL(copy_user_generic);
-EXPORT_SYMBOL(copy_from_user);
-EXPORT_SYMBOL(copy_to_user);
-EXPORT_SYMBOL(copy_in_user);
-EXPORT_SYMBOL(strnlen_user);
-
-#ifdef CONFIG_PCI
-EXPORT_SYMBOL(pci_alloc_consistent);
-EXPORT_SYMBOL(pci_free_consistent);
-#endif
-
-#ifdef CONFIG_PCI
-EXPORT_SYMBOL(pcibios_penalize_isa_irq);
-EXPORT_SYMBOL(pci_mem_start);
-#endif
-
-EXPORT_SYMBOL(copy_page);
-EXPORT_SYMBOL(clear_page);
-
-EXPORT_SYMBOL(cpu_pda);
-#ifdef CONFIG_SMP
-EXPORT_SYMBOL(cpu_data);
-EXPORT_SYMBOL(cpu_online_map);
-EXPORT_SYMBOL(__write_lock_failed);
-EXPORT_SYMBOL(__read_lock_failed);
-
-EXPORT_SYMBOL(synchronize_irq);
-EXPORT_SYMBOL(smp_call_function);
-EXPORT_SYMBOL(cpu_callout_map);
-#endif
-
-#ifdef CONFIG_VT
-EXPORT_SYMBOL(screen_info);
-#endif
-
-EXPORT_SYMBOL(get_wchan);
-
-EXPORT_SYMBOL(rtc_lock);
-
-/* EXPORT_SYMBOL_GPL(set_nmi_callback);
- EXPORT_SYMBOL_GPL(unset_nmi_callback); */
-
-/* Export string functions. We normally rely on gcc builtin for most of these,
- but gcc sometimes decides not to inline them. */
-#undef memcpy
-#undef memset
-#undef memmove
-#undef memchr
-#undef strlen
-#undef strcpy
-#undef strncmp
-#undef strncpy
-#undef strchr
-#undef strcmp
-#undef strcpy
-#undef strcat
-#undef memcmp
-
-extern void * memset(void *,int,__kernel_size_t);
-extern size_t strlen(const char *);
-extern void * memmove(void * dest,const void *src,size_t count);
-extern char * strcpy(char * dest,const char *src);
-extern int strcmp(const char * cs,const char * ct);
-extern void *memchr(const void *s, int c, size_t n);
-extern void * memcpy(void *,const void *,__kernel_size_t);
-extern void * __memcpy(void *,const void *,__kernel_size_t);
-extern char * strcat(char *, const char *);
-extern int memcmp(const void * cs,const void * ct,size_t count);
-
-EXPORT_SYMBOL(memset);
-EXPORT_SYMBOL(strlen);
-EXPORT_SYMBOL(memmove);
-EXPORT_SYMBOL(strcpy);
-EXPORT_SYMBOL(strncmp);
-EXPORT_SYMBOL(strncpy);
-EXPORT_SYMBOL(strchr);
-EXPORT_SYMBOL(strcmp);
-EXPORT_SYMBOL(strcat);
-EXPORT_SYMBOL(strncat);
-EXPORT_SYMBOL(memchr);
-EXPORT_SYMBOL(strrchr);
-EXPORT_SYMBOL(strnlen);
-EXPORT_SYMBOL(memscan);
-EXPORT_SYMBOL(memcpy);
-EXPORT_SYMBOL(__memcpy);
-EXPORT_SYMBOL(memcmp);
-
-#ifdef CONFIG_RWSEM_XCHGADD_ALGORITHM
-/* prototypes are wrong, these are assembly with custom calling functions */
-extern void rwsem_down_read_failed_thunk(void);
-extern void rwsem_wake_thunk(void);
-extern void rwsem_downgrade_thunk(void);
-extern void rwsem_down_write_failed_thunk(void);
-EXPORT_SYMBOL(rwsem_down_read_failed_thunk);
-EXPORT_SYMBOL(rwsem_wake_thunk);
-EXPORT_SYMBOL(rwsem_downgrade_thunk);
-EXPORT_SYMBOL(rwsem_down_write_failed_thunk);
-#endif
-
-EXPORT_SYMBOL(empty_zero_page);
-
-#ifdef CONFIG_HAVE_DEC_LOCK
-EXPORT_SYMBOL(_atomic_dec_and_lock);
-#endif
-
-EXPORT_SYMBOL(die_chain);
-EXPORT_SYMBOL(register_die_notifier);
-
-#ifdef CONFIG_SMP
-EXPORT_SYMBOL(cpu_sibling_map);
-EXPORT_SYMBOL(smp_num_siblings);
-#endif
-
-extern void do_softirq_thunk(void);
-EXPORT_SYMBOL(do_softirq_thunk);
-
-void out_of_line_bug(void);
-EXPORT_SYMBOL(out_of_line_bug);
-
-EXPORT_SYMBOL(init_level4_pgt);
-
-extern unsigned long __supported_pte_mask;
-EXPORT_SYMBOL(__supported_pte_mask);
-
-#ifdef CONFIG_SMP
-EXPORT_SYMBOL(flush_tlb_page);
-EXPORT_SYMBOL_GPL(flush_tlb_all);
-#endif
-
-EXPORT_SYMBOL(cpu_khz);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/xen_entry.S
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/kernel/xen_entry.S Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,38 +0,0 @@
-/*
- * Copied from arch/xen/i386/kernel/entry.S
- */
-/* Offsets into shared_info_t. */
-#define evtchn_upcall_pending 0
-#define evtchn_upcall_mask 1
-
-#define sizeof_vcpu_shift 3
-
-#ifdef CONFIG_SMP
-#define preempt_disable(reg) incl threadinfo_preempt_count(reg)
-#define preempt_enable(reg) decl threadinfo_preempt_count(reg)
-#define XEN_GET_VCPU_INFO(reg) preempt_disable(%rbp) ; \
- movq %gs:pda_cpunumber,reg ; \
- shl $sizeof_vcpu_shift,reg ; \
- addq HYPERVISOR_shared_info,reg
-#define XEN_PUT_VCPU_INFO(reg) preempt_enable(%rbp) ; \
-#define XEN_PUT_VCPU_INFO_fixup .byte 0xff,0xff,0xff
-#else
-#define XEN_GET_VCPU_INFO(reg) movq HYPERVISOR_shared_info,reg
-#define XEN_PUT_VCPU_INFO(reg)
-#define XEN_PUT_VCPU_INFO_fixup
-#endif
-
-#define XEN_LOCKED_BLOCK_EVENTS(reg) movb $1,evtchn_upcall_mask(reg)
-#define XEN_LOCKED_UNBLOCK_EVENTS(reg) movb $0,evtchn_upcall_mask(reg)
-#define XEN_BLOCK_EVENTS(reg) XEN_GET_VCPU_INFO(reg) ; \
- XEN_LOCKED_BLOCK_EVENTS(reg) ; \
- XEN_PUT_VCPU_INFO(reg)
-#define XEN_UNBLOCK_EVENTS(reg) XEN_GET_VCPU_INFO(reg)
; \
- XEN_LOCKED_UNBLOCK_EVENTS(reg) ; \
- XEN_PUT_VCPU_INFO(reg)
-#define XEN_TEST_PENDING(reg) testb $0xFF,evtchn_upcall_pending(reg)
-
-EVENT_MASK = (CS+4)
-VGCF_IN_SYSCALL = (1<<8)
-
-
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/mm/Makefile
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/mm/Makefile Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,31 +0,0 @@
-#
-# Makefile for the linux x86_64-specific parts of the memory manager.
-#
-
-XENARCH := $(subst ",,$(CONFIG_XENARCH))
-
-CFLAGS += -Iarch/$(XENARCH)/mm
-
-obj-y := init.o fault.o ioremap.o pageattr.o
-c-obj-y := extable.o
-
-i386-obj-y := hypervisor.o
-
-#obj-y := init.o fault.o ioremap.o extable.o pageattr.o
-#c-obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
-c-obj-$(CONFIG_DISCONTIGMEM) += numa.o
-c-obj-$(CONFIG_K8_NUMA) += k8topology.o
-
-hugetlbpage-y = ../../../i386/mm/hugetlbpage.o
-
-c-link :=
-
-$(patsubst %.o,$(obj)/%.c,$(c-obj-y) $(c-link)):
- @ln -fsn $(srctree)/arch/x86_64/mm/$(notdir $@) $@
-
-$(patsubst %.o,$(obj)/%.c,$(i386-obj-y)):
- ln -fsn $(srctree)/arch/xen/i386/mm/$(notdir $@) $@
-
-obj-y += $(c-obj-y) $(i386-obj-y)
-
-clean-files += $(patsubst %.o,%.c,$(c-obj-y) $(c-obj-) $(c-link) $(i386-obj-y))
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/mm/fault.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/mm/fault.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,592 +0,0 @@
-/*
- * linux/arch/x86-64/mm/fault.c
- *
- * Copyright (C) 1995 Linus Torvalds
- * Copyright (C) 2001,2002 Andi Kleen, SuSE Labs.
- */
-
-#include <linux/config.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/ptrace.h>
-#include <linux/mman.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/smp_lock.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/tty.h>
-#include <linux/vt_kern.h> /* For unblank_screen() */
-#include <linux/compiler.h>
-#include <linux/module.h>
-#include <linux/percpu.h>
-#include <linux/kprobes.h>
-
-#include <asm/system.h>
-#include <asm/uaccess.h>
-#include <asm/pgalloc.h>
-#include <asm/smp.h>
-#include <asm/tlbflush.h>
-#include <asm/proto.h>
-#include <asm/kdebug.h>
-#include <asm-generic/sections.h>
-#include <asm/kdebug.h>
-
-DEFINE_PER_CPU(pgd_t *, cur_pgd);
-
-void bust_spinlocks(int yes)
-{
- int loglevel_save = console_loglevel;
- if (yes) {
- oops_in_progress = 1;
- } else {
-#ifdef CONFIG_VT
- unblank_screen();
-#endif
- oops_in_progress = 0;
- /*
- * OK, the message is on the console. Now we call printk()
- * without oops_in_progress set so that printk will give klogd
- * a poke. Hold onto your hats...
- */
- console_loglevel = 15; /* NMI oopser may have shut the
console up */
- printk(" ");
- console_loglevel = loglevel_save;
- }
-}
-
-/* Sometimes the CPU reports invalid exceptions on prefetch.
- Check that here and ignore.
- Opcode checker based on code by Richard Brunner */
-static noinline int is_prefetch(struct pt_regs *regs, unsigned long addr,
- unsigned long error_code)
-{
- unsigned char *instr = (unsigned char *)(regs->rip);
- int scan_more = 1;
- int prefetch = 0;
- unsigned char *max_instr = instr + 15;
-
- /* If it was a exec fault ignore */
- if (error_code & (1<<4))
- return 0;
-
- /* Code segments in LDT could have a non zero base. Don't check
- when that's possible */
- if (regs->cs & (1<<2))
- return 0;
-
- if ((regs->cs & 3) != 0 && regs->rip >= TASK_SIZE)
- return 0;
-
- while (scan_more && instr < max_instr) {
- unsigned char opcode;
- unsigned char instr_hi;
- unsigned char instr_lo;
-
- if (__get_user(opcode, instr))
- break;
-
- instr_hi = opcode & 0xf0;
- instr_lo = opcode & 0x0f;
- instr++;
-
- switch (instr_hi) {
- case 0x20:
- case 0x30:
- /* Values 0x26,0x2E,0x36,0x3E are valid x86
- prefixes. In long mode, the CPU will signal
- invalid opcode if some of these prefixes are
- present so we will never get here anyway */
- scan_more = ((instr_lo & 7) == 0x6);
- break;
-
- case 0x40:
- /* In AMD64 long mode, 0x40 to 0x4F are valid REX
prefixes
- Need to figure out under what instruction mode the
- instruction was issued ... */
- /* Could check the LDT for lm, but for now it's good
- enough to assume that long mode only uses well known
- segments or kernel. */
- scan_more = ((regs->cs & 3) == 0) || (regs->cs ==
__USER_CS);
- break;
-
- case 0x60:
- /* 0x64 thru 0x67 are valid prefixes in all modes. */
- scan_more = (instr_lo & 0xC) == 0x4;
- break;
- case 0xF0:
- /* 0xF0, 0xF2, and 0xF3 are valid prefixes in all
modes. */
- scan_more = !instr_lo || (instr_lo>>1) == 1;
- break;
- case 0x00:
- /* Prefetch instruction is 0x0F0D or 0x0F18 */
- scan_more = 0;
- if (__get_user(opcode, instr))
- break;
- prefetch = (instr_lo == 0xF) &&
- (opcode == 0x0D || opcode == 0x18);
- break;
- default:
- scan_more = 0;
- break;
- }
- }
- return prefetch;
-}
-
-static int bad_address(void *p)
-{
- unsigned long dummy;
- return __get_user(dummy, (unsigned long *)p);
-}
-
-void dump_pagetable(unsigned long address)
-{
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *pte;
-
- pgd = (pgd_t *)per_cpu(cur_pgd, smp_processor_id());
- pgd += pgd_index(address);
-
- printk("PGD %lx ", pgd_val(*pgd));
- if (bad_address(pgd)) goto bad;
- if (!pgd_present(*pgd)) goto ret;
-
- pud = __pud_offset_k((pud_t *)pgd_page(*pgd), address);
- if (bad_address(pud)) goto bad;
- printk("PUD %lx ", pud_val(*pud));
- if (!pud_present(*pud)) goto ret;
-
- pmd = pmd_offset(pud, address);
- if (bad_address(pmd)) goto bad;
- printk("PMD %lx ", pmd_val(*pmd));
- if (!pmd_present(*pmd)) goto ret;
-
- pte = pte_offset_kernel(pmd, address);
- if (bad_address(pte)) goto bad;
- printk("PTE %lx", pte_val(*pte));
-ret:
- printk("\n");
- return;
-bad:
- printk("BAD\n");
-}
-
-static const char errata93_warning[] =
-KERN_ERR "******* Your BIOS seems to not contain a fix for K8 errata #93\n"
-KERN_ERR "******* Working around it, but it may cause SEGVs or burn power.\n"
-KERN_ERR "******* Please consider a BIOS update.\n"
-KERN_ERR "******* Disabling USB legacy in the BIOS may also help.\n";
-
-/* Workaround for K8 erratum #93 & buggy BIOS.
- BIOS SMM functions are required to use a specific workaround
- to avoid corruption of the 64bit RIP register on C stepping K8.
- A lot of BIOS that didn't get tested properly miss this.
- The OS sees this as a page fault with the upper 32bits of RIP cleared.
- Try to work around it here.
- Note we only handle faults in kernel here. */
-
-static int is_errata93(struct pt_regs *regs, unsigned long address)
-{
- static int warned;
- if (address != regs->rip)
- return 0;
- if ((address >> 32) != 0)
- return 0;
- address |= 0xffffffffUL << 32;
- if ((address >= (u64)_stext && address <= (u64)_etext) ||
- (address >= MODULES_VADDR && address <= MODULES_END)) {
- if (!warned) {
- printk(errata93_warning);
- warned = 1;
- }
- regs->rip = address;
- return 1;
- }
- return 0;
-}
-
-int unhandled_signal(struct task_struct *tsk, int sig)
-{
- if (tsk->pid == 1)
- return 1;
- /* Warn for strace, but not for gdb */
- if (!test_ti_thread_flag(tsk->thread_info, TIF_SYSCALL_TRACE) &&
- (tsk->ptrace & PT_PTRACED))
- return 0;
- return (tsk->sighand->action[sig-1].sa.sa_handler == SIG_IGN) ||
- (tsk->sighand->action[sig-1].sa.sa_handler == SIG_DFL);
-}
-
-static noinline void pgtable_bad(unsigned long address, struct pt_regs *regs,
- unsigned long error_code)
-{
- oops_begin();
- printk(KERN_ALERT "%s: Corrupted page table at address %lx\n",
- current->comm, address);
- dump_pagetable(address);
- __die("Bad pagetable", regs, error_code);
- oops_end();
- do_exit(SIGKILL);
-}
-
-/*
- * Handle a fault on the vmalloc or module mapping area
- */
-static int vmalloc_fault(unsigned long address)
-{
- pgd_t *pgd, *pgd_ref;
- pud_t *pud, *pud_ref;
- pmd_t *pmd, *pmd_ref;
- pte_t *pte, *pte_ref;
-
- /* Copy kernel mappings over when needed. This can also
- happen within a race in page table update. In the later
- case just flush. */
-
- pgd = pgd_offset(current->mm ?: &init_mm, address);
- pgd_ref = pgd_offset_k(address);
- if (pgd_none(*pgd_ref))
- return -1;
- if (pgd_none(*pgd))
- set_pgd(pgd, *pgd_ref);
-
- /* Below here mismatches are bugs because these lower tables
- are shared */
-
- pud = pud_offset(pgd, address);
- pud_ref = pud_offset(pgd_ref, address);
- if (pud_none(*pud_ref))
- return -1;
- if (pud_none(*pud) || pud_page(*pud) != pud_page(*pud_ref))
- BUG();
- pmd = pmd_offset(pud, address);
- pmd_ref = pmd_offset(pud_ref, address);
- if (pmd_none(*pmd_ref))
- return -1;
- if (pmd_none(*pmd) || pmd_page(*pmd) != pmd_page(*pmd_ref))
- BUG();
- pte_ref = pte_offset_kernel(pmd_ref, address);
- if (!pte_present(*pte_ref))
- return -1;
- pte = pte_offset_kernel(pmd, address);
- if (!pte_present(*pte) || pte_page(*pte) != pte_page(*pte_ref))
- BUG();
- __flush_tlb_all();
- return 0;
-}
-
-int page_fault_trace = 0;
-int exception_trace = 1;
-
-
-#define MEM_VERBOSE 1
-
-#ifdef MEM_VERBOSE
-#define MEM_LOG(_f, _a...) \
- printk("fault.c:[%d]-> " _f "\n", \
- __LINE__ , ## _a )
-#else
-#define MEM_LOG(_f, _a...) ((void)0)
-#endif
-
-/*
- * This routine handles page faults. It determines the address,
- * and the problem, and then passes it off to one of the appropriate
- * routines.
- *
- * error_code:
- * bit 0 == 0 means no page found, 1 means protection fault
- * bit 1 == 0 means read, 1 means write
- * bit 2 == 0 means kernel, 1 means user-mode
- * bit 3 == 1 means fault was an instruction fetch
- */
-asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code,
- unsigned long address)
-{
- struct task_struct *tsk;
- struct mm_struct *mm;
- struct vm_area_struct * vma;
- const struct exception_table_entry *fixup;
- int write;
- siginfo_t info;
-
- if (!user_mode(regs))
- error_code &= ~4; /* means kernel */
-
-#ifdef CONFIG_CHECKING
- {
- unsigned long gs;
- struct x8664_pda *pda = cpu_pda + stack_smp_processor_id();
- rdmsrl(MSR_GS_BASE, gs);
- if (gs != (unsigned long)pda) {
- wrmsrl(MSR_GS_BASE, pda);
- printk("page_fault: wrong gs %lx expected %p\n", gs,
pda);
- }
- }
-#endif
- if (notify_die(DIE_PAGE_FAULT, "page fault", regs, error_code, 14,
- SIGSEGV) == NOTIFY_STOP)
- return;
-
- if (likely(regs->eflags & X86_EFLAGS_IF))
- local_irq_enable();
-
- if (unlikely(page_fault_trace))
- printk("pagefault rip:%lx rsp:%lx cs:%lu ss:%lu address %lx
error %lx\n",
-
regs->rip,regs->rsp,regs->cs,regs->ss,address,error_code);
-
- tsk = current;
- mm = tsk->mm;
- info.si_code = SEGV_MAPERR;
-
-
- /*
- * We fault-in kernel-space virtual memory on-demand. The
- * 'reference' page table is init_mm.pgd.
- *
- * NOTE! We MUST NOT take any locks for this case. We may
- * be in an interrupt or a critical region, and should
- * only copy the information from the master page table,
- * nothing more.
- *
- * This verifies that the fault happens in kernel space
- * (error_code & 4) == 0, and that the fault was not a
- * protection error (error_code & 1) == 0.
- */
- if (unlikely(address >= TASK_SIZE)) {
- if (!(error_code & 5)) {
- if (vmalloc_fault(address) < 0)
- goto bad_area_nosemaphore;
- return;
- }
- /*
- * Don't take the mm semaphore here. If we fixup a prefetch
- * fault we could otherwise deadlock.
- */
- goto bad_area_nosemaphore;
- }
-
- if (unlikely(error_code & (1 << 3)))
- pgtable_bad(address, regs, error_code);
-
- /*
- * If we're in an interrupt or have no user
- * context, we must not take the fault..
- */
- if (unlikely(in_atomic() || !mm))
- goto bad_area_nosemaphore;
-
- again:
- /* When running in the kernel we expect faults to occur only to
- * addresses in user space. All other faults represent errors in the
- * kernel and should generate an OOPS. Unfortunatly, in the case of an
- * erroneous fault occuring in a code path which already holds mmap_sem
- * we will deadlock attempting to validate the fault against the
- * address space. Luckily the kernel only validly references user
- * space from well defined areas of code, which are listed in the
- * exceptions table.
- *
- * As the vast majority of faults will be valid we will only perform
- * the source reference check when there is a possibilty of a deadlock.
- * Attempt to lock the address space, if we cannot we then validate the
- * source. If this is invalid we can skip the address space check,
- * thus avoiding the deadlock.
- */
- if (!down_read_trylock(&mm->mmap_sem)) {
- if ((error_code & 4) == 0 &&
- !search_exception_tables(regs->rip))
- goto bad_area_nosemaphore;
- down_read(&mm->mmap_sem);
- }
-
- vma = find_vma(mm, address);
- if (!vma)
- goto bad_area;
- if (likely(vma->vm_start <= address))
- goto good_area;
- if (!(vma->vm_flags & VM_GROWSDOWN))
- goto bad_area;
- if (error_code & 4) {
- // XXX: align red zone size with ABI
- if (address + 128 < regs->rsp)
- goto bad_area;
- }
- if (expand_stack(vma, address))
- goto bad_area;
-/*
- * Ok, we have a good vm_area for this memory access, so
- * we can handle it..
- */
-good_area:
- info.si_code = SEGV_ACCERR;
- write = 0;
- switch (error_code & 3) {
- default: /* 3: write, present */
- /* fall through */
- case 2: /* write, not present */
- if (!(vma->vm_flags & VM_WRITE))
- goto bad_area;
- write++;
- break;
- case 1: /* read, present */
- goto bad_area;
- case 0: /* read, not present */
- if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
- goto bad_area;
- }
-
- /*
- * If for any reason at all we couldn't handle the fault,
- * make sure we exit gracefully rather than endlessly redo
- * the fault.
- */
- switch (handle_mm_fault(mm, vma, address, write)) {
- case 1:
- tsk->min_flt++;
- break;
- case 2:
- tsk->maj_flt++;
- break;
- case 0:
- goto do_sigbus;
- default:
- goto out_of_memory;
- }
-
- up_read(&mm->mmap_sem);
- return;
-
-/*
- * Something tried to access memory that isn't in our memory map..
- * Fix it, but check if it's kernel or user first..
- */
-bad_area:
- up_read(&mm->mmap_sem);
-
-bad_area_nosemaphore:
-
-#ifdef CONFIG_IA32_EMULATION
- /* 32bit vsyscall. map on demand. */
- if (test_thread_flag(TIF_IA32) &&
- address >= VSYSCALL32_BASE && address < VSYSCALL32_END) {
- if (map_syscall32(mm, address) < 0)
- goto out_of_memory2;
- return;
- }
-#endif
-
- /* User mode accesses just cause a SIGSEGV */
- if (error_code & 4) {
- if (is_prefetch(regs, address, error_code))
- return;
-
- /* Work around K8 erratum #100 K8 in compat mode
- occasionally jumps to illegal addresses >4GB. We
- catch this here in the page fault handler because
- these addresses are not reachable. Just detect this
- case and return. Any code segment in LDT is
- compatibility mode. */
- if ((regs->cs == __USER32_CS || (regs->cs & (1<<2))) &&
- (address >> 32))
- return;
-
- if (exception_trace && unhandled_signal(tsk, SIGSEGV)) {
- printk(
- "%s%s[%d]: segfault at %016lx rip %016lx rsp %016lx
error %lx\n",
- tsk->pid > 1 ? KERN_INFO : KERN_EMERG,
- tsk->comm, tsk->pid, address, regs->rip,
- regs->rsp, error_code);
- }
-
- tsk->thread.cr2 = address;
- /* Kernel addresses are always protection faults */
- tsk->thread.error_code = error_code | (address >= TASK_SIZE);
- tsk->thread.trap_no = 14;
- info.si_signo = SIGSEGV;
- info.si_errno = 0;
- /* info.si_code has been set above */
- info.si_addr = (void __user *)address;
- force_sig_info(SIGSEGV, &info, tsk);
- return;
- }
-
-no_context:
-
- /* Are we prepared to handle this kernel fault? */
- fixup = search_exception_tables(regs->rip);
- if (fixup) {
- regs->rip = fixup->fixup;
- return;
- }
-
- /*
- * Hall of shame of CPU/BIOS bugs.
- */
-
- if (is_prefetch(regs, address, error_code))
- return;
-
- if (is_errata93(regs, address))
- return;
-
-/*
- * Oops. The kernel tried to access some bad page. We'll have to
- * terminate things with extreme prejudice.
- */
-
- oops_begin();
-
- if (address < PAGE_SIZE)
- printk(KERN_ALERT "Unable to handle kernel NULL pointer
dereference");
- else
- printk(KERN_ALERT "Unable to handle kernel paging request");
- printk(" at %016lx RIP: \n" KERN_ALERT,address);
- printk_address(regs->rip);
- printk("\n");
- dump_pagetable(address);
- __die("Oops", regs, error_code);
- /* Executive summary in case the body of the oops scrolled away */
- printk(KERN_EMERG "CR2: %016lx\n", address);
- oops_end();
- do_exit(SIGKILL);
-
-/*
- * We ran out of memory, or some other thing happened to us that made
- * us unable to handle the page fault gracefully.
- */
-out_of_memory:
- up_read(&mm->mmap_sem);
-out_of_memory2:
- if (current->pid == 1) {
- yield();
- goto again;
- }
- printk("VM: killing process %s\n", tsk->comm);
- if (error_code & 4)
- do_exit(SIGKILL);
- goto no_context;
-
-do_sigbus:
- up_read(&mm->mmap_sem);
-
- /* Kernel mode? Handle exceptions or die */
- if (!(error_code & 4))
- goto no_context;
-
- tsk->thread.cr2 = address;
- tsk->thread.error_code = error_code;
- tsk->thread.trap_no = 14;
- info.si_signo = SIGBUS;
- info.si_errno = 0;
- info.si_code = BUS_ADRERR;
- info.si_addr = (void __user *)address;
- force_sig_info(SIGBUS, &info, tsk);
- return;
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/mm/init.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/mm/init.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,966 +0,0 @@
-/*
- * linux/arch/x86_64/mm/init.c
- *
- * Copyright (C) 1995 Linus Torvalds
- * Copyright (C) 2000 Pavel Machek <pavel@xxxxxxx>
- * Copyright (C) 2002,2003 Andi Kleen <ak@xxxxxxx>
- *
- * Jun Nakajima <jun.nakajima@xxxxxxxxx>
- * Modified for Xen.
- */
-
-#include <linux/config.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/ptrace.h>
-#include <linux/mman.h>
-#include <linux/mm.h>
-#include <linux/swap.h>
-#include <linux/smp.h>
-#include <linux/init.h>
-#include <linux/pagemap.h>
-#include <linux/bootmem.h>
-#include <linux/proc_fs.h>
-
-#include <asm/processor.h>
-#include <asm/system.h>
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-#include <asm/pgalloc.h>
-#include <asm/dma.h>
-#include <asm/fixmap.h>
-#include <asm/e820.h>
-#include <asm/apic.h>
-#include <asm/tlb.h>
-#include <asm/mmu_context.h>
-#include <asm/proto.h>
-#include <asm/smp.h>
-
-#ifndef Dprintk
-#define Dprintk(x...)
-#endif
-
-#ifdef CONFIG_GART_IOMMU
-extern int swiotlb;
-#endif
-
-extern char _stext[];
-
-DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
-extern unsigned long start_pfn;
-
-static int init_mapping_done;
-
-/*
- * Use this until direct mapping is established, i.e. before __va() is
- * avaialble in init_memory_mapping().
- */
-
-#define addr_to_page(addr, page) \
- (addr) &= PHYSICAL_PAGE_MASK; \
- (page) = ((unsigned long *) ((unsigned long)(((mfn_to_pfn((addr) >>
PAGE_SHIFT)) << PAGE_SHIFT) + __START_KERNEL_map)))
-
-static void __make_page_readonly(unsigned long va)
-{
- unsigned long addr;
- pte_t *pte;
- unsigned long *page = (unsigned long *) init_level4_pgt;
-
- addr = (unsigned long) page[pgd_index(va)];
- addr_to_page(addr, page);
-
- addr = page[pud_index(va)];
- addr_to_page(addr, page);
-
- addr = page[pmd_index(va)];
- addr_to_page(addr, page);
-
- pte = (pte_t *) &page[pte_index(va)];
- xen_l1_entry_update(pte, (*(unsigned long*)pte) & ~_PAGE_RW);
- __flush_tlb_one(addr);
-}
-
-static void __make_page_writable(unsigned long va)
-{
- unsigned long addr;
- pte_t *pte;
- unsigned long *page = (unsigned long *) init_level4_pgt;
-
- addr = (unsigned long) page[pgd_index(va)];
- addr_to_page(addr, page);
-
- addr = page[pud_index(va)];
- addr_to_page(addr, page);
-
- addr = page[pmd_index(va)];
- addr_to_page(addr, page);
-
- pte = (pte_t *) &page[pte_index(va)];
- xen_l1_entry_update(pte, (*(unsigned long*)pte)| _PAGE_RW);
- __flush_tlb_one(addr);
-}
-
-
-/*
- * Assume the translation is already established.
- */
-void make_page_readonly(void *va)
-{
- pgd_t* pgd; pud_t *pud; pmd_t* pmd; pte_t *pte;
- unsigned long addr = (unsigned long) va;
-
- if (!init_mapping_done) {
- __make_page_readonly(addr);
- return;
- }
-
- pgd = pgd_offset_k(addr);
- pud = pud_offset(pgd, addr);
- pmd = pmd_offset(pud, addr);
- pte = pte_offset_kernel(pmd, addr);
- xen_l1_entry_update(pte, (*(unsigned long*)pte)&~_PAGE_RW);
- __flush_tlb_one(addr);
-}
-
-void make_page_writable(void *va)
-{
- pgd_t* pgd; pud_t *pud; pmd_t* pmd; pte_t *pte;
- unsigned long addr = (unsigned long) va;
-
- if (!init_mapping_done) {
- __make_page_writable(addr);
- return;
- }
-
- pgd = pgd_offset_k(addr);
- pud = pud_offset(pgd, addr);
- pmd = pmd_offset(pud, addr);
- pte = pte_offset_kernel(pmd, addr);
- xen_l1_entry_update(pte, (*(unsigned long*)pte)|_PAGE_RW);
- __flush_tlb_one(addr);
-}
-
-void make_pages_readonly(void* va, unsigned nr)
-{
- while ( nr-- != 0 ) {
- make_page_readonly(va);
- va = (void*)((unsigned long)va + PAGE_SIZE);
- }
-}
-
-void make_pages_writable(void* va, unsigned nr)
-{
- while ( nr-- != 0 ) {
- make_page_writable(va);
- va = (void*)((unsigned long)va + PAGE_SIZE);
- }
-}
-
-/*
- * NOTE: pagetable_init alloc all the fixmap pagetables contiguous on the
- * physical space so we can cache the place of the first one and move
- * around without checking the pgd every time.
- */
-
-void show_mem(void)
-{
- int i, total = 0, reserved = 0;
- int shared = 0, cached = 0;
- pg_data_t *pgdat;
- struct page *page;
-
- printk("Mem-info:\n");
- show_free_areas();
- printk("Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
-
- for_each_pgdat(pgdat) {
- for (i = 0; i < pgdat->node_spanned_pages; ++i) {
- page = pfn_to_page(pgdat->node_start_pfn + i);
- total++;
- if (PageReserved(page))
- reserved++;
- else if (PageSwapCache(page))
- cached++;
- else if (page_count(page))
- shared += page_count(page) - 1;
- }
- }
- printk("%d pages of RAM\n", total);
- printk("%d reserved pages\n",reserved);
- printk("%d pages shared\n",shared);
- printk("%d pages swap cached\n",cached);
-}
-
-/* References to section boundaries */
-
-extern char _text, _etext, _edata, __bss_start, _end[];
-extern char __init_begin, __init_end;
-
-int after_bootmem;
-
-static void *spp_getpage(void)
-{
- void *ptr;
- if (after_bootmem)
- ptr = (void *) get_zeroed_page(GFP_ATOMIC);
- else
- ptr = alloc_bootmem_pages(PAGE_SIZE);
- if (!ptr || ((unsigned long)ptr & ~PAGE_MASK))
- panic("set_pte_phys: cannot allocate page data %s\n",
after_bootmem?"after bootmem":"");
-
- Dprintk("spp_getpage %p\n", ptr);
- return ptr;
-}
-
-#define pgd_offset_u(address) (pgd_t *)(init_level4_user_pgt +
pgd_index(address))
-
-static inline pud_t *pud_offset_u(unsigned long address)
-{
- pud_t *pud = level3_user_pgt;
-
- return pud + pud_index(address);
-}
-
-static void set_pte_phys(unsigned long vaddr,
- unsigned long phys, pgprot_t prot, int user_mode)
-{
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *pte, new_pte;
-
- Dprintk("set_pte_phys %lx to %lx\n", vaddr, phys);
-
- pgd = (user_mode ? pgd_offset_u(vaddr) : pgd_offset_k(vaddr));
-
- if (pgd_none(*pgd)) {
- printk("PGD FIXMAP MISSING, it should be setup in head.S!\n");
- return;
- }
-
- pud = (user_mode ? pud_offset_u(vaddr) : pud_offset(pgd, vaddr));
-
- if (pud_none(*pud)) {
- pmd = (pmd_t *) spp_getpage();
-
- make_page_readonly(pmd);
- xen_pmd_pin(__pa(pmd));
- set_pud(pud, __pud(__pa(pmd) | _KERNPG_TABLE | _PAGE_USER));
- if (pmd != pmd_offset(pud, 0)) {
- printk("PAGETABLE BUG #01! %p <-> %p\n", pmd,
pmd_offset(pud,0));
- return;
- }
- }
-
- pmd = pmd_offset(pud, vaddr);
-
- if (pmd_none(*pmd)) {
- pte = (pte_t *) spp_getpage();
- make_page_readonly(pte);
-
- xen_pte_pin(__pa(pte));
- set_pmd(pmd, __pmd(__pa(pte) | _KERNPG_TABLE | _PAGE_USER));
- if (pte != pte_offset_kernel(pmd, 0)) {
- printk("PAGETABLE BUG #02!\n");
- return;
- }
- }
- new_pte = pfn_pte(phys >> PAGE_SHIFT, prot);
-
- pte = pte_offset_kernel(pmd, vaddr);
-
- if (!pte_none(*pte) &&
- pte_val(*pte) != (pte_val(new_pte) & __supported_pte_mask))
- pte_ERROR(*pte);
- xen_l1_entry_update(pte, new_pte.pte);
-
- /*
- * It's enough to flush this one mapping.
- * (PGE mappings get flushed as well)
- */
- __flush_tlb_one(vaddr);
-}
-
-static void set_pte_phys_ma(unsigned long vaddr,
- unsigned long phys, pgprot_t prot)
-{
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *pte, new_pte;
-
- Dprintk("set_pte_phys %lx to %lx\n", vaddr, phys);
-
- pgd = pgd_offset_k(vaddr);
- if (pgd_none(*pgd)) {
- printk("PGD FIXMAP MISSING, it should be setup in head.S!\n");
- return;
- }
- pud = pud_offset(pgd, vaddr);
- if (pud_none(*pud)) {
-
- pmd = (pmd_t *) spp_getpage();
- make_page_readonly(pmd);
- xen_pmd_pin(__pa(pmd));
-
- set_pud(pud, __pud(__pa(pmd) | _KERNPG_TABLE | _PAGE_USER));
-
- if (pmd != pmd_offset(pud, 0)) {
- printk("PAGETABLE BUG #01! %p <-> %p\n", pmd,
pmd_offset(pud,0));
- return;
- }
- }
- pmd = pmd_offset(pud, vaddr);
-
- if (pmd_none(*pmd)) {
- pte = (pte_t *) spp_getpage();
- make_page_readonly(pte);
- xen_pte_pin(__pa(pte));
-
- set_pmd(pmd, __pmd(__pa(pte) | _KERNPG_TABLE | _PAGE_USER));
- if (pte != pte_offset_kernel(pmd, 0)) {
- printk("PAGETABLE BUG #02!\n");
- return;
- }
- }
-
- new_pte = pfn_pte_ma(phys >> PAGE_SHIFT, prot);
- pte = pte_offset_kernel(pmd, vaddr);
-
- if (!pte_none(*pte) &&
- pte_val_ma(*pte) != (pte_val_ma(new_pte) & __supported_pte_mask))
- pte_ERROR(*pte);
-
- /*
- * Note that the pte page is already RO, thus we want to use
- * xen_l1_entry_update(), not set_pte().
- */
- xen_l1_entry_update(pte,
- (pfn_pte_ma(phys >> PAGE_SHIFT, prot).pte));
-
- /*
- * It's enough to flush this one mapping.
- * (PGE mappings get flushed as well)
- */
- __flush_tlb_one(vaddr);
-}
-
-#define SET_FIXMAP_KERNEL 0
-#define SET_FIXMAP_USER 1
-
-/* NOTE: this is meant to be run only at boot */
-void __set_fixmap (enum fixed_addresses idx, unsigned long phys, pgprot_t prot)
-{
- unsigned long address = __fix_to_virt(idx);
-
- if (idx >= __end_of_fixed_addresses) {
- printk("Invalid __set_fixmap\n");
- return;
- }
- switch (idx) {
- case VSYSCALL_FIRST_PAGE:
- set_pte_phys(address, phys, prot, SET_FIXMAP_KERNEL);
- break;
- default:
- set_pte_phys_ma(address, phys, prot);
- break;
- }
-}
-
-
-/*
- * At this point it only supports vsyscall area.
- */
-void __set_fixmap_user (enum fixed_addresses idx, unsigned long phys, pgprot_t
prot)
-{
- unsigned long address = __fix_to_virt(idx);
-
- if (idx >= __end_of_fixed_addresses) {
- printk("Invalid __set_fixmap\n");
- return;
- }
-
- set_pte_phys(address, phys, prot, SET_FIXMAP_USER);
-}
-
-unsigned long __initdata table_start, table_end, tables_space;
-
-unsigned long get_machine_pfn(unsigned long addr)
-{
- pud_t* pud = pud_offset_k(addr);
- pmd_t* pmd = pmd_offset(pud, addr);
- pte_t *pte = pte_offset_kernel(pmd, addr);
-
- return pte_mfn(*pte);
-}
-
-#define ALIGN_TO_4K __attribute__((section(".data.page_aligned")))
-#define MAX_LOW_PAGES 0x20
-static unsigned long __init_pgt[MAX_LOW_PAGES][512] ALIGN_TO_4K;
-static int __init_pgt_index;
-
-/*
- * We start using from start_pfn
- */
-static __init void *alloc_static_page(unsigned long *phys)
-{
- int i = __init_pgt_index++;
-
- if (__init_pgt_index >= MAX_LOW_PAGES) {
- printk("Need to increase MAX_LOW_PAGES");
- BUG();
- }
-
- *phys = __pa(__init_pgt[i]);
-
- return (void *) __init_pgt[i];
-}
-
-/*
- * Get RO page
- */
-static void __init *alloc_low_page(unsigned long *phys)
-{
- unsigned long pfn = table_end++;
-
- *phys = (pfn << PAGE_SHIFT);
- memset((void *) ((pfn << PAGE_SHIFT) + __START_KERNEL_map), 0,
PAGE_SIZE);
- return (void *)((pfn << PAGE_SHIFT) + __START_KERNEL_map);
-}
-
-#define PTE_SIZE PAGE_SIZE
-
-static inline void __set_pte(pte_t *dst, pte_t val)
-{
- *dst = val;
-}
-
-void __init phys_pud_init(pud_t *pud, unsigned long address, unsigned long end)
-{
- long i, j, k;
- unsigned long paddr;
-
- i = pud_index(address);
- pud = pud + i;
-
- for (; i < PTRS_PER_PUD; pud++, i++) {
- unsigned long pmd_phys;
- pmd_t *pmd;
-
- paddr = address + i*PUD_SIZE;
- if (paddr >= end) {
- for (; i < PTRS_PER_PUD; i++, pud++)
- set_pud(pud, __pud(0));
- break;
- }
-
- pmd = alloc_low_page(&pmd_phys);
- make_page_readonly(pmd);
- xen_pmd_pin(pmd_phys);
- set_pud(pud, __pud(pmd_phys | _KERNPG_TABLE));
-
- for (j = 0; j < PTRS_PER_PMD; pmd++, j++) {
- unsigned long pte_phys;
- pte_t *pte, *pte_save;
-
- if (paddr >= end) {
- for (; j < PTRS_PER_PMD; j++, pmd++)
- set_pmd(pmd, __pmd(0));
- break;
- }
- pte = alloc_low_page(&pte_phys);
- pte_save = pte;
- for (k = 0; k < PTRS_PER_PTE; pte++, k++, paddr +=
PTE_SIZE) {
- if (paddr < (table_start << PAGE_SHIFT)
- + tables_space)
- {
- __set_pte(pte,
- __pte(paddr | (_KERNPG_TABLE &
~_PAGE_RW)));
- continue;
- }
- if (paddr >= end) {
- for (; k < PTRS_PER_PTE; k++, pte++)
- __set_pte(pte, __pte(0));
- break;
- }
- __set_pte(pte, __pte(paddr | _KERNPG_TABLE));
- }
- pte = pte_save;
- make_page_readonly(pte);
- xen_pte_pin(pte_phys);
- set_pmd(pmd, __pmd(pte_phys | _KERNPG_TABLE));
- }
- }
- __flush_tlb();
-}
-
-static void __init find_early_table_space(unsigned long end)
-{
- unsigned long puds, pmds, ptes;
-
- puds = (end + PUD_SIZE - 1) >> PUD_SHIFT;
- pmds = (end + PMD_SIZE - 1) >> PMD_SHIFT;
- ptes = (end + PTE_SIZE - 1) >> PAGE_SHIFT;
-
- tables_space = round_up(puds * 8, PAGE_SIZE) +
- round_up(pmds * 8, PAGE_SIZE) +
- round_up(ptes * 8, PAGE_SIZE);
-}
-
-
-/*
- * Extend kernel mapping to access pages for page tables. The initial
- * mapping done by Xen is minimal (e.g. 8MB) and we need to extend the
- * mapping for early initialization.
- */
-
-#define MIN_INIT_SIZE 0x800000
-static unsigned long current_size, extended_size;
-
-void __init extend_init_mapping(void)
-{
- unsigned long va = __START_KERNEL_map;
- unsigned long addr, *pte_page;
-
- unsigned long phys;
- pmd_t *pmd;
- pte_t *pte, new_pte;
- unsigned long *page = (unsigned long *) init_level4_pgt;
- int i;
-
- addr = (unsigned long) page[pgd_index(va)];
- addr_to_page(addr, page);
-
- addr = page[pud_index(va)];
- addr_to_page(addr, page);
-
- for (;;) {
- pmd = (pmd_t *) &page[pmd_index(va)];
- if (pmd_present(*pmd)) {
- /*
- * if pmd is valid, check pte.
- */
- addr = page[pmd_index(va)];
- addr_to_page(addr, pte_page);
-
- for (i = 0; i < PTRS_PER_PTE; i++) {
- pte = (pte_t *) &pte_page[pte_index(va)];
-
- if (pte_present(*pte)) {
- va += PAGE_SIZE;
- current_size += PAGE_SIZE;
- } else
- break;
- }
-
- } else
- break;
- }
-
- for (; va < __START_KERNEL_map + current_size + tables_space; ) {
- pmd = (pmd_t *) &page[pmd_index(va)];
-
- if (pmd_none(*pmd)) {
- pte_page = (unsigned long *) alloc_static_page(&phys);
- make_page_readonly(pte_page);
- xen_pte_pin(phys);
- set_pmd(pmd, __pmd(phys | _KERNPG_TABLE | _PAGE_USER));
-
- for (i = 0; i < PTRS_PER_PTE; i++, va += PAGE_SIZE) {
- new_pte = pfn_pte((va - __START_KERNEL_map) >>
PAGE_SHIFT,
- __pgprot(_KERNPG_TABLE |
_PAGE_USER));
-
- pte = (pte_t *) &pte_page[pte_index(va)];
- xen_l1_entry_update(pte, new_pte.pte);
- extended_size += PAGE_SIZE;
- }
- }
- }
-}
-
-
-/* Setup the direct mapping of the physical memory at PAGE_OFFSET.
- This runs before bootmem is initialized and gets pages directly from the
- physical memory. To access them they are temporarily mapped. */
-void __init init_memory_mapping(unsigned long start, unsigned long end)
-{
- unsigned long next;
-
- Dprintk("init_memory_mapping\n");
-
- find_early_table_space(end);
- extend_init_mapping();
- start_pfn = current_size >> PAGE_SHIFT;
-
- table_start = start_pfn;
- table_end = table_start;
-
- start = (unsigned long)__va(start);
- end = (unsigned long)__va(end);
-
- for (; start < end; start = next) {
- unsigned long pud_phys;
- pud_t *pud = alloc_low_page(&pud_phys);
- make_page_readonly(pud);
- xen_pud_pin(pud_phys);
- next = start + PGDIR_SIZE;
- if (next > end)
- next = end;
- phys_pud_init(pud, __pa(start), __pa(next));
- set_pgd(pgd_offset_k(start), mk_kernel_pgd(pud_phys));
- }
-
- printk("kernel direct mapping tables upto %lx @ %lx-%lx\n", end,
- table_start<<PAGE_SHIFT,
- table_end<<PAGE_SHIFT);
-
- start_pfn = ((current_size + extended_size) >> PAGE_SHIFT);
-
- /*
- * TBD: Need to calculate at runtime
- */
-
- __flush_tlb_all();
- init_mapping_done = 1;
-}
-
-extern struct x8664_pda cpu_pda[NR_CPUS];
-
-void zap_low_mappings(void)
-{
- /* this is not required for Xen */
-#if 0
- swap_low_mappings();
-#endif
-}
-
-#ifndef CONFIG_DISCONTIGMEM
-void __init paging_init(void)
-{
- int i;
-
- {
- unsigned long zones_size[MAX_NR_ZONES] = {0, 0, 0};
- /* unsigned int max_dma; */
- /* max_dma = virt_to_phys((char *)MAX_DMA_ADDRESS) >>
PAGE_SHIFT; */
- /* if (end_pfn < max_dma) */
- zones_size[ZONE_DMA] = end_pfn;
-#if 0
- else {
- zones_size[ZONE_DMA] = max_dma;
- zones_size[ZONE_NORMAL] = end_pfn - max_dma;
- }
-#endif
- free_area_init(zones_size);
- }
-
- set_fixmap(FIX_SHARED_INFO, xen_start_info.shared_info);
- HYPERVISOR_shared_info = (shared_info_t *)fix_to_virt(FIX_SHARED_INFO);
-
- memset(empty_zero_page, 0, sizeof(empty_zero_page));
-
-#ifdef CONFIG_XEN_PHYSDEV_ACCESS
- /* Setup mapping of lower 1st MB */
- for (i = 0; i < NR_FIX_ISAMAPS; i++)
- if (xen_start_info.flags & SIF_PRIVILEGED)
- set_fixmap(FIX_ISAMAP_BEGIN - i, i * PAGE_SIZE);
- else
- __set_fixmap(FIX_ISAMAP_BEGIN - i,
- virt_to_machine(empty_zero_page),
- PAGE_KERNEL_RO);
-#endif
-
-}
-#endif
-
-/* Unmap a kernel mapping if it exists. This is useful to avoid prefetches
- from the CPU leading to inconsistent cache lines. address and size
- must be aligned to 2MB boundaries.
- Does nothing when the mapping doesn't exist. */
-void __init clear_kernel_mapping(unsigned long address, unsigned long size)
-{
- unsigned long end = address + size;
-
- BUG_ON(address & ~LARGE_PAGE_MASK);
- BUG_ON(size & ~LARGE_PAGE_MASK);
-
- for (; address < end; address += LARGE_PAGE_SIZE) {
- pgd_t *pgd = pgd_offset_k(address);
- pud_t *pud;
- pmd_t *pmd;
- if (pgd_none(*pgd))
- continue;
- pud = pud_offset(pgd, address);
- if (pud_none(*pud))
- continue;
- pmd = pmd_offset(pud, address);
- if (!pmd || pmd_none(*pmd))
- continue;
- if (0 == (pmd_val(*pmd) & _PAGE_PSE)) {
- /* Could handle this, but it should not happen
currently. */
- printk(KERN_ERR
- "clear_kernel_mapping: mapping has been split. will leak
memory\n");
- pmd_ERROR(*pmd);
- }
- set_pmd(pmd, __pmd(0));
- }
- __flush_tlb_all();
-}
-
-static inline int page_is_ram (unsigned long pagenr)
-{
- if (pagenr < start_pfn || pagenr >= end_pfn)
- return 0;
-
- return 1;
-}
-
-extern int swiotlb_force;
-
-static struct kcore_list kcore_mem, kcore_vmalloc, kcore_kernel, kcore_modules,
- kcore_vsyscall;
-
-void __init mem_init(void)
-{
- int codesize, reservedpages, datasize, initsize;
- int tmp;
-
-#ifdef CONFIG_SWIOTLB
- if (swiotlb_force)
- swiotlb = 1;
- if (!iommu_aperture &&
- (end_pfn >= 0xffffffff>>PAGE_SHIFT || force_iommu))
- swiotlb = 1;
- if (swiotlb)
- swiotlb_init();
-#endif
-
- /* How many end-of-memory variables you have, grandma! */
- max_low_pfn = end_pfn;
- max_pfn = end_pfn;
- num_physpages = end_pfn;
- high_memory = (void *) __va(end_pfn * PAGE_SIZE);
-
- /* clear the zero-page */
- memset(empty_zero_page, 0, PAGE_SIZE);
-
- reservedpages = 0;
-
- /* this will put all low memory onto the freelists */
-#ifdef CONFIG_DISCONTIGMEM
- totalram_pages += numa_free_all_bootmem();
- tmp = 0;
- /* should count reserved pages here for all nodes */
-#else
- max_mapnr = end_pfn;
- if (!mem_map) BUG();
-
- totalram_pages += free_all_bootmem();
-
- for (tmp = 0; tmp < end_pfn; tmp++)
- /*
- * Only count reserved RAM pages
- */
- if (page_is_ram(tmp) && PageReserved(pfn_to_page(tmp)))
- reservedpages++;
-#endif
-
- after_bootmem = 1;
-
- codesize = (unsigned long) &_etext - (unsigned long) &_text;
- datasize = (unsigned long) &_edata - (unsigned long) &_etext;
- initsize = (unsigned long) &__init_end - (unsigned long) &__init_begin;
-
- /* Register memory areas for /proc/kcore */
- kclist_add(&kcore_mem, __va(0), max_low_pfn << PAGE_SHIFT);
- kclist_add(&kcore_vmalloc, (void *)VMALLOC_START,
- VMALLOC_END-VMALLOC_START);
- kclist_add(&kcore_kernel, &_stext, _end - _stext);
- kclist_add(&kcore_modules, (void *)MODULES_VADDR, MODULES_LEN);
- kclist_add(&kcore_vsyscall, (void *)VSYSCALL_START,
- VSYSCALL_END - VSYSCALL_START);
-
- printk("Memory: %luk/%luk available (%dk kernel code, %dk reserved, %dk
data, %dk init)\n",
- (unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
- end_pfn << (PAGE_SHIFT-10),
- codesize >> 10,
- reservedpages << (PAGE_SHIFT-10),
- datasize >> 10,
- initsize >> 10);
-
- /*
- * Subtle. SMP is doing its boot stuff late (because it has to
- * fork idle threads) - but it also needs low mappings for the
- * protected-mode entry to work. We zap these entries only after
- * the WP-bit has been tested.
- */
-#ifndef CONFIG_SMP
- zap_low_mappings();
-#endif
-}
-
-extern char __initdata_begin[], __initdata_end[];
-
-void free_initmem(void)
-{
-#ifdef __DO_LATER__
- /*
- * Some pages can be pinned, but some are not. Unpinning such pages
- * triggers BUG().
- */
- unsigned long addr;
-
- addr = (unsigned long)(&__init_begin);
- for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) {
- ClearPageReserved(virt_to_page(addr));
- set_page_count(virt_to_page(addr), 1);
- memset((void *)(addr & ~(PAGE_SIZE-1)), 0xcc, PAGE_SIZE);
- xen_pte_unpin(__pa(addr));
- make_page_writable(__va(__pa(addr)));
- /*
- * Make pages from __PAGE_OFFSET address as well
- */
- make_page_writable((void *)addr);
- free_page(addr);
- totalram_pages++;
- }
- memset(__initdata_begin, 0xba, __initdata_end - __initdata_begin);
- printk ("Freeing unused kernel memory: %luk freed\n", (&__init_end -
&__init_begin) >> 10);
-#endif
-}
-
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
- if (start < (unsigned long)&_end)
- return;
- printk ("Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
- for (; start < end; start += PAGE_SIZE) {
- ClearPageReserved(virt_to_page(start));
- set_page_count(virt_to_page(start), 1);
- free_page(start);
- totalram_pages++;
- }
-}
-#endif
-
-void __init reserve_bootmem_generic(unsigned long phys, unsigned len)
-{
- /* Should check here against the e820 map to avoid double free */
-#ifdef CONFIG_DISCONTIGMEM
- int nid = phys_to_nid(phys);
- reserve_bootmem_node(NODE_DATA(nid), phys, len);
-#else
- reserve_bootmem(phys, len);
-#endif
-}
-
-int kern_addr_valid(unsigned long addr)
-{
- unsigned long above = ((long)addr) >> __VIRTUAL_MASK_SHIFT;
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *pte;
-
- if (above != 0 && above != -1UL)
- return 0;
-
- pgd = pgd_offset_k(addr);
- if (pgd_none(*pgd))
- return 0;
-
- pud = pud_offset_k(addr);
- if (pud_none(*pud))
- return 0;
-
- pmd = pmd_offset(pud, addr);
- if (pmd_none(*pmd))
- return 0;
- if (pmd_large(*pmd))
- return pfn_valid(pmd_pfn(*pmd));
-
- pte = pte_offset_kernel(pmd, addr);
- if (pte_none(*pte))
- return 0;
- return pfn_valid(pte_pfn(*pte));
-}
-
-#ifdef CONFIG_SYSCTL
-#include <linux/sysctl.h>
-
-extern int exception_trace, page_fault_trace;
-
-static ctl_table debug_table2[] = {
- { 99, "exception-trace", &exception_trace, sizeof(int), 0644, NULL,
- proc_dointvec },
-#ifdef CONFIG_CHECKING
- { 100, "page-fault-trace", &page_fault_trace, sizeof(int), 0644, NULL,
- proc_dointvec },
-#endif
- { 0, }
-};
-
-static ctl_table debug_root_table2[] = {
- { .ctl_name = CTL_DEBUG, .procname = "debug", .mode = 0555,
- .child = debug_table2 },
- { 0 },
-};
-
-static __init int x8664_sysctl_init(void)
-{
- register_sysctl_table(debug_root_table2, 1);
- return 0;
-}
-__initcall(x8664_sysctl_init);
-#endif
-
-/* Pseudo VMAs to allow ptrace access for the vsyscall pages. x86-64 has two
- different ones: one for 32bit and one for 64bit. Use the appropiate
- for the target task. */
-
-static struct vm_area_struct gate_vma = {
- .vm_start = VSYSCALL_START,
- .vm_end = VSYSCALL_END,
- .vm_page_prot = PAGE_READONLY
-};
-
-static struct vm_area_struct gate32_vma = {
- .vm_start = VSYSCALL32_BASE,
- .vm_end = VSYSCALL32_END,
- .vm_page_prot = PAGE_READONLY
-};
-
-struct vm_area_struct *get_gate_vma(struct task_struct *tsk)
-{
-#ifdef CONFIG_IA32_EMULATION
- if (test_tsk_thread_flag(tsk, TIF_IA32)) {
- /* lookup code assumes the pages are present. set them up
- now */
- if (__map_syscall32(tsk->mm, VSYSCALL32_BASE) < 0)
- return NULL;
- return &gate32_vma;
- }
-#endif
- return &gate_vma;
-}
-
-int in_gate_area(struct task_struct *task, unsigned long addr)
-{
- struct vm_area_struct *vma = get_gate_vma(task);
- return (addr >= vma->vm_start) && (addr < vma->vm_end);
-}
-
-/* Use this when you have no reliable task/vma, typically from interrupt
- * context. It is less reliable than using the task's vma and may give
- * false positives.
- */
-int in_gate_area_no_task(unsigned long addr)
-{
- return (((addr >= VSYSCALL_START) && (addr < VSYSCALL_END)) ||
- ((addr >= VSYSCALL32_BASE) && (addr < VSYSCALL32_END)));
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/mm/ioremap.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/mm/ioremap.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,466 +0,0 @@
-/*
- * arch/x86_64/mm/ioremap.c
- *
- * Re-map IO memory to kernel address space so that we can access it.
- * This is needed for high PCI addresses that aren't mapped in the
- * 640k-1MB IO memory area on PC's
- *
- * (C) Copyright 1995 1996 Linus Torvalds
- */
-
-#include <linux/vmalloc.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <asm/io.h>
-#include <asm/fixmap.h>
-#include <asm/cacheflush.h>
-#include <asm/tlbflush.h>
-#include <asm/pgtable.h>
-#include <asm/pgalloc.h>
-
-/*
- * Reuse arch/xen/i396/mm/ioremap.c. Need to merge later
- */
-#ifndef CONFIG_XEN_PHYSDEV_ACCESS
-
-void * __ioremap(unsigned long phys_addr, unsigned long size,
- unsigned long flags)
-{
- return NULL;
-}
-
-void *ioremap_nocache (unsigned long phys_addr, unsigned long size)
-{
- return NULL;
-}
-
-void iounmap(volatile void __iomem *addr)
-{
-}
-
-void __init *bt_ioremap(unsigned long phys_addr, unsigned long size)
-{
- return NULL;
-}
-
-void __init bt_iounmap(void *addr, unsigned long size)
-{
-}
-
-#else
-
-#if defined(__i386__)
-/*
- * Does @address reside within a non-highmem page that is local to this virtual
- * machine (i.e., not an I/O page, nor a memory page belonging to another VM).
- * See the comment that accompanies pte_pfn() in pgtable-2level.h to understand
- * why this works.
- */
-static inline int is_local_lowmem(unsigned long address)
-{
- extern unsigned long max_low_pfn;
- unsigned long mfn = address >> PAGE_SHIFT;
- unsigned long pfn = mfn_to_pfn(mfn);
- return ((pfn < max_low_pfn) && (pfn_to_mfn(pfn) == mfn));
-}
-#elif defined(__x86_64__)
-/*
- *
- */
-static inline int is_local_lowmem(unsigned long address)
-{
- return 0;
-}
-#endif
-
-/*
- * Generic mapping function (not visible outside):
- */
-
-/*
- * Remap an arbitrary physical address space into the kernel virtual
- * address space. Needed when the kernel wants to access high addresses
- * directly.
- *
- * NOTE! We need to allow non-page-aligned mappings too: we will obviously
- * have to convert them into an offset in a page-aligned mapping, but the
- * caller shouldn't need to know that small detail.
- */
-void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned
long flags)
-{
- void __iomem * addr;
- struct vm_struct * area;
- unsigned long offset, last_addr;
- domid_t domid = DOMID_IO;
-
- /* Don't allow wraparound or zero size */
- last_addr = phys_addr + size - 1;
- if (!size || last_addr < phys_addr)
- return NULL;
-
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
- /*
- * Don't remap the low PCI/ISA area, it's always mapped..
- */
- if (phys_addr >= 0x0 && last_addr < 0x100000)
- return isa_bus_to_virt(phys_addr);
-#endif
-
- /*
- * Don't allow anybody to remap normal RAM that we're using..
- */
- if (is_local_lowmem(phys_addr)) {
- char *t_addr, *t_end;
- struct page *page;
-
- t_addr = bus_to_virt(phys_addr);
- t_end = t_addr + (size - 1);
-
- for(page = virt_to_page(t_addr); page <= virt_to_page(t_end);
page++)
- if(!PageReserved(page))
- return NULL;
-
- domid = DOMID_LOCAL;
- }
-
- /*
- * Mappings have to be page-aligned
- */
- offset = phys_addr & ~PAGE_MASK;
- phys_addr &= PAGE_MASK;
- size = PAGE_ALIGN(last_addr+1) - phys_addr;
-
- /*
- * Ok, go for it..
- */
- area = get_vm_area(size, VM_IOREMAP | (flags << 20));
- if (!area)
- return NULL;
- area->phys_addr = phys_addr;
- addr = (void __iomem *) area->addr;
- if (direct_remap_area_pages(&init_mm, (unsigned long) addr, phys_addr,
- size, __pgprot(_PAGE_PRESENT | _PAGE_RW |
- _PAGE_DIRTY | _PAGE_ACCESSED
-#if defined(__x86_64__)
- | _PAGE_USER
-#endif
- | flags), domid)) {
- vunmap((void __force *) addr);
- return NULL;
- }
- return (void __iomem *) (offset + (char __iomem *)addr);
-}
-
-
-/**
- * ioremap_nocache - map bus memory into CPU space
- * @offset: bus address of the memory
- * @size: size of the resource to map
- *
- * ioremap_nocache performs a platform specific sequence of operations to
- * make bus memory CPU accessible via the readb/readw/readl/writeb/
- * writew/writel functions and the other mmio helpers. The returned
- * address is not guaranteed to be usable directly as a virtual
- * address.
- *
- * This version of ioremap ensures that the memory is marked uncachable
- * on the CPU as well as honouring existing caching rules from things like
- * the PCI bus. Note that there are other caches and buffers on many
- * busses. In particular driver authors should read up on PCI writes
- *
- * It's useful if some control registers are in such an area and
- * write combining or read caching is not desirable:
- *
- * Must be freed with iounmap.
- */
-
-void __iomem *ioremap_nocache (unsigned long phys_addr, unsigned long size)
-{
- unsigned long last_addr;
- void __iomem *p = __ioremap(phys_addr, size, _PAGE_PCD);
- if (!p)
- return p;
-
- /* Guaranteed to be > phys_addr, as per __ioremap() */
- last_addr = phys_addr + size - 1;
-
- if (is_local_lowmem(last_addr)) {
- struct page *ppage = virt_to_page(bus_to_virt(phys_addr));
- unsigned long npages;
-
- phys_addr &= PAGE_MASK;
-
- /* This might overflow and become zero.. */
- last_addr = PAGE_ALIGN(last_addr);
-
- /* .. but that's ok, because modulo-2**n arithmetic will make
- * the page-aligned "last - first" come out right.
- */
- npages = (last_addr - phys_addr) >> PAGE_SHIFT;
-
- if (change_page_attr(ppage, npages, PAGE_KERNEL_NOCACHE) < 0) {
- iounmap(p);
- p = NULL;
- }
- global_flush_tlb();
- }
-
- return p;
-}
-
-void iounmap(volatile void __iomem *addr)
-{
- struct vm_struct *p;
- if ((void __force *) addr <= high_memory)
- return;
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
- if ((unsigned long) addr >= fix_to_virt(FIX_ISAMAP_BEGIN))
- return;
-#endif
- p = remove_vm_area((void *) (PAGE_MASK & (unsigned long __force) addr));
- if (!p) {
- printk("__iounmap: bad address %p\n", addr);
- return;
- }
-
- if ((p->flags >> 20) && is_local_lowmem(p->phys_addr)) {
- /* p->size includes the guard page, but cpa doesn't like that */
- change_page_attr(virt_to_page(bus_to_virt(p->phys_addr)),
- (p->size - PAGE_SIZE) >> PAGE_SHIFT,
- PAGE_KERNEL);
- global_flush_tlb();
- }
- kfree(p);
-}
-
-#if defined(__i386__)
-void __init *bt_ioremap(unsigned long phys_addr, unsigned long size)
-{
- unsigned long offset, last_addr;
- unsigned int nrpages;
- enum fixed_addresses idx;
-
- /* Don't allow wraparound or zero size */
- last_addr = phys_addr + size - 1;
- if (!size || last_addr < phys_addr)
- return NULL;
-
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
- /*
- * Don't remap the low PCI/ISA area, it's always mapped..
- */
- if (phys_addr >= 0x0 && last_addr < 0x100000)
- return isa_bus_to_virt(phys_addr);
-#endif
-
- /*
- * Mappings have to be page-aligned
- */
- offset = phys_addr & ~PAGE_MASK;
- phys_addr &= PAGE_MASK;
- size = PAGE_ALIGN(last_addr) - phys_addr;
-
- /*
- * Mappings have to fit in the FIX_BTMAP area.
- */
- nrpages = size >> PAGE_SHIFT;
- if (nrpages > NR_FIX_BTMAPS)
- return NULL;
-
- /*
- * Ok, go for it..
- */
- idx = FIX_BTMAP_BEGIN;
- while (nrpages > 0) {
- set_fixmap(idx, phys_addr);
- phys_addr += PAGE_SIZE;
- --idx;
- --nrpages;
- }
- return (void*) (offset + fix_to_virt(FIX_BTMAP_BEGIN));
-}
-
-void __init bt_iounmap(void *addr, unsigned long size)
-{
- unsigned long virt_addr;
- unsigned long offset;
- unsigned int nrpages;
- enum fixed_addresses idx;
-
- virt_addr = (unsigned long)addr;
- if (virt_addr < fix_to_virt(FIX_BTMAP_BEGIN))
- return;
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
- if (virt_addr >= fix_to_virt(FIX_ISAMAP_BEGIN))
- return;
-#endif
- offset = virt_addr & ~PAGE_MASK;
- nrpages = PAGE_ALIGN(offset + size - 1) >> PAGE_SHIFT;
-
- idx = FIX_BTMAP_BEGIN;
- while (nrpages > 0) {
- clear_fixmap(idx);
- --idx;
- --nrpages;
- }
-}
-#endif /* defined(__i386__) */
-
-#endif /* CONFIG_XEN_PHYSDEV_ACCESS */
-
-/* These hacky macros avoid phys->machine translations. */
-#define __direct_pte(x) ((pte_t) { (x) } )
-#define __direct_mk_pte(page_nr,pgprot) \
- __direct_pte(((page_nr) << PAGE_SHIFT) | pgprot_val(pgprot))
-#define direct_mk_pte_phys(physpage, pgprot) \
- __direct_mk_pte((physpage) >> PAGE_SHIFT, pgprot)
-
-static inline void direct_remap_area_pte(pte_t *pte,
- unsigned long address,
- unsigned long size,
- mmu_update_t **v)
-{
- unsigned long end;
-
- address &= ~PMD_MASK;
- end = address + size;
- if (end > PMD_SIZE)
- end = PMD_SIZE;
- if (address >= end)
- BUG();
-
- do {
- (*v)->ptr = virt_to_machine(pte);
- (*v)++;
- address += PAGE_SIZE;
- pte++;
- } while (address && (address < end));
-}
-
-static inline int direct_remap_area_pmd(struct mm_struct *mm,
- pmd_t *pmd,
- unsigned long address,
- unsigned long size,
- mmu_update_t **v)
-{
- unsigned long end;
-
- address &= ~PGDIR_MASK;
- end = address + size;
- if (end > PGDIR_SIZE)
- end = PGDIR_SIZE;
- if (address >= end)
- BUG();
- do {
- pte_t *pte = (mm == &init_mm) ?
- pte_alloc_kernel(mm, pmd, address) :
- pte_alloc_map(mm, pmd, address);
- if (!pte)
- return -ENOMEM;
- direct_remap_area_pte(pte, address, end - address, v);
- pte_unmap(pte);
- address = (address + PMD_SIZE) & PMD_MASK;
- pmd++;
- } while (address && (address < end));
- return 0;
-}
-
-int __direct_remap_area_pages(struct mm_struct *mm,
- unsigned long address,
- unsigned long size,
- mmu_update_t *v)
-{
- pgd_t * dir;
- unsigned long end = address + size;
- int error;
-
-#if defined(__i386__)
- dir = pgd_offset(mm, address);
-#elif defined (__x86_64)
- dir = (mm == &init_mm) ?
- pgd_offset_k(address):
- pgd_offset(mm, address);
-#endif
- if (address >= end)
- BUG();
- spin_lock(&mm->page_table_lock);
- do {
- pud_t *pud;
- pmd_t *pmd;
-
- error = -ENOMEM;
- pud = pud_alloc(mm, dir, address);
- if (!pud)
- break;
- pmd = pmd_alloc(mm, pud, address);
- if (!pmd)
- break;
- error = 0;
- direct_remap_area_pmd(mm, pmd, address, end - address, &v);
- address = (address + PGDIR_SIZE) & PGDIR_MASK;
- dir++;
-
- } while (address && (address < end));
- spin_unlock(&mm->page_table_lock);
- return error;
-}
-
-
-int direct_remap_area_pages(struct mm_struct *mm,
- unsigned long address,
- unsigned long machine_addr,
- unsigned long size,
- pgprot_t prot,
- domid_t domid)
-{
- int i;
- unsigned long start_address;
-#define MAX_DIRECTMAP_MMU_QUEUE 130
- mmu_update_t u[MAX_DIRECTMAP_MMU_QUEUE], *v = u;
-
- start_address = address;
-
- flush_cache_all();
-
- for (i = 0; i < size; i += PAGE_SIZE) {
- if ((v - u) == MAX_DIRECTMAP_MMU_QUEUE) {
- /* Fill in the PTE pointers. */
- __direct_remap_area_pages(mm,
- start_address,
- address-start_address,
- u);
-
- if (HYPERVISOR_mmu_update(u, v - u, NULL, domid) < 0)
- return -EFAULT;
- v = u;
- start_address = address;
- }
-
- /*
- * Fill in the machine address: PTE ptr is done later by
- * __direct_remap_area_pages().
- */
- v->val = (machine_addr & PAGE_MASK) | pgprot_val(prot);
-
- machine_addr += PAGE_SIZE;
- address += PAGE_SIZE;
- v++;
- }
-
- if (v != u) {
- /* get the ptep's filled in */
- __direct_remap_area_pages(mm,
- start_address,
- address-start_address,
- u);
- if (unlikely(HYPERVISOR_mmu_update(u, v - u, NULL, domid) < 0))
- return -EFAULT;
- }
-
- flush_tlb_all();
-
- return 0;
-}
-
-EXPORT_SYMBOL(direct_remap_area_pages);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/mm/pageattr.c
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/mm/pageattr.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,254 +0,0 @@
-/*
- * Copyright 2002 Andi Kleen, SuSE Labs.
- * Thanks to Ben LaHaise for precious feedback.
- */
-
-#include <linux/config.h>
-#include <linux/mm.h>
-#include <linux/sched.h>
-#include <linux/highmem.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <asm/uaccess.h>
-#include <asm/processor.h>
-#include <asm/tlbflush.h>
-#include <asm/pgalloc.h>
-#include <asm/io.h>
-
-void pte_free(struct page *pte)
-{
- pte_t *ptep;
-
- ptep = pfn_to_kaddr(page_to_pfn(pte));
-
- xen_pte_unpin(__pa(ptep));
- make_page_writable(ptep);
- __free_page(pte);
-}
-
-static inline pte_t *lookup_address(unsigned long address)
-{
- pgd_t *pgd = pgd_offset_k(address);
- pud_t *pud;
- pmd_t *pmd;
- pte_t *pte;
- if (pgd_none(*pgd))
- return NULL;
- pud = pud_offset(pgd, address);
- if (!pud_present(*pud))
- return NULL;
- pmd = pmd_offset(pud, address);
- if (!pmd_present(*pmd))
- return NULL;
- if (pmd_large(*pmd))
- return (pte_t *)pmd;
- pte = pte_offset_kernel(pmd, address);
- if (pte && !pte_present(*pte))
- pte = NULL;
- return pte;
-}
-
-static struct page *split_large_page(unsigned long address, pgprot_t prot,
- pgprot_t ref_prot)
-{
- int i;
- unsigned long addr;
- struct page *base = alloc_pages(GFP_KERNEL, 0);
- pte_t *pbase;
- if (!base)
- return NULL;
- address = __pa(address);
- addr = address & LARGE_PAGE_MASK;
- pbase = (pte_t *)page_address(base);
- for (i = 0; i < PTRS_PER_PTE; i++, addr += PAGE_SIZE) {
- pbase[i] = pfn_pte(addr >> PAGE_SHIFT,
- addr == address ? prot : ref_prot);
- }
- return base;
-}
-
-
-static void flush_kernel_map(void *address)
-{
- if (0 && address && cpu_has_clflush) {
- /* is this worth it? */
- int i;
- for (i = 0; i < PAGE_SIZE; i += boot_cpu_data.x86_clflush_size)
- asm volatile("clflush (%0)" :: "r" (address + i));
- } else
- asm volatile("wbinvd":::"memory");
- if (address)
- __flush_tlb_one((unsigned long) address);
- else
- __flush_tlb_all();
-}
-
-
-static inline void flush_map(unsigned long address)
-{
- on_each_cpu(flush_kernel_map, (void *)address, 1, 1);
-}
-
-struct deferred_page {
- struct deferred_page *next;
- struct page *fpage;
- unsigned long address;
-};
-static struct deferred_page *df_list; /* protected by init_mm.mmap_sem */
-
-static inline void save_page(unsigned long address, struct page *fpage)
-{
- struct deferred_page *df;
- df = kmalloc(sizeof(struct deferred_page), GFP_KERNEL);
- if (!df) {
- flush_map(address);
- __free_page(fpage);
- } else {
- df->next = df_list;
- df->fpage = fpage;
- df->address = address;
- df_list = df;
- }
-}
-
-/*
- * No more special protections in this 2/4MB area - revert to a
- * large page again.
- */
-static void revert_page(unsigned long address, pgprot_t ref_prot)
-{
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t large_pte;
-
- pgd = pgd_offset_k(address);
- BUG_ON(pgd_none(*pgd));
- pud = pud_offset(pgd,address);
- BUG_ON(pud_none(*pud));
- pmd = pmd_offset(pud, address);
- BUG_ON(pmd_val(*pmd) & _PAGE_PSE);
- pgprot_val(ref_prot) |= _PAGE_PSE;
- large_pte = mk_pte_phys(__pa(address) & LARGE_PAGE_MASK, ref_prot);
- set_pte((pte_t *)pmd, large_pte);
-}
-
-static int
-__change_page_attr(unsigned long address, unsigned long pfn, pgprot_t prot,
- pgprot_t ref_prot)
-{
- pte_t *kpte;
- struct page *kpte_page;
- unsigned kpte_flags;
- kpte = lookup_address(address);
- if (!kpte) return 0;
- kpte_page = virt_to_page(((unsigned long)kpte) & PAGE_MASK);
- kpte_flags = pte_val(*kpte);
- if (pgprot_val(prot) != pgprot_val(ref_prot)) {
- if ((kpte_flags & _PAGE_PSE) == 0) {
- set_pte(kpte, pfn_pte(pfn, prot));
- } else {
- /*
- * split_large_page will take the reference for this
change_page_attr
- * on the split page.
- */
- struct page *split = split_large_page(address, prot,
ref_prot);
- if (!split)
- return -ENOMEM;
- set_pte(kpte,mk_pte(split, ref_prot));
- kpte_page = split;
- }
- get_page(kpte_page);
- } else if ((kpte_flags & _PAGE_PSE) == 0) {
- set_pte(kpte, pfn_pte(pfn, ref_prot));
- __put_page(kpte_page);
- } else
- BUG();
-
- /* on x86-64 the direct mapping set at boot is not using 4k pages */
-// BUG_ON(PageReserved(kpte_page));
- /*
- * ..., but the XEN guest kernels (currently) do:
- * If the pte was reserved, it means it was created at boot
- * time (not via split_large_page) and in turn we must not
- * replace it with a large page.
- */
- if (!PageReserved(kpte_page)) {
- switch (page_count(kpte_page)) {
- case 1:
- save_page(address, kpte_page);
- revert_page(address, ref_prot);
- break;
- case 0:
- BUG(); /* memleak and failed 2M page regeneration */
- }
- }
- return 0;
-}
-
-/*
- * Change the page attributes of an page in the linear mapping.
- *
- * This should be used when a page is mapped with a different caching policy
- * than write-back somewhere - some CPUs do not like it when mappings with
- * different caching policies exist. This changes the page attributes of the
- * in kernel linear mapping too.
- *
- * The caller needs to ensure that there are no conflicting mappings elsewhere.
- * This function only deals with the kernel linear map.
- *
- * Caller must call global_flush_tlb() after this.
- */
-int change_page_attr_addr(unsigned long address, int numpages, pgprot_t prot)
-{
- int err = 0;
- int i;
-
- down_write(&init_mm.mmap_sem);
- for (i = 0; i < numpages; i++, address += PAGE_SIZE) {
- unsigned long pfn = __pa(address) >> PAGE_SHIFT;
-
- err = __change_page_attr(address, pfn, prot, PAGE_KERNEL);
- if (err)
- break;
- /* Handle kernel mapping too which aliases part of the
- * lowmem */
- if (__pa(address) < KERNEL_TEXT_SIZE) {
- unsigned long addr2;
- pgprot_t prot2 = prot;
- addr2 = __START_KERNEL_map + __pa(address);
- pgprot_val(prot2) &= ~_PAGE_NX;
- err = __change_page_attr(addr2, pfn, prot2,
PAGE_KERNEL_EXEC);
- }
- }
- up_write(&init_mm.mmap_sem);
- return err;
-}
-
-/* Don't call this for MMIO areas that may not have a mem_map entry */
-int change_page_attr(struct page *page, int numpages, pgprot_t prot)
-{
- unsigned long addr = (unsigned long)page_address(page);
- return change_page_attr_addr(addr, numpages, prot);
-}
-
-void global_flush_tlb(void)
-{
- struct deferred_page *df, *next_df;
-
- down_read(&init_mm.mmap_sem);
- df = xchg(&df_list, NULL);
- up_read(&init_mm.mmap_sem);
- if (!df)
- return;
- flush_map((df && !df->next) ? df->address : 0);
- for (; df; df = next_df) {
- next_df = df->next;
- if (df->fpage)
- __free_page(df->fpage);
- kfree(df);
- }
-}
-
-EXPORT_SYMBOL(change_page_attr);
-EXPORT_SYMBOL(global_flush_tlb);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/pci/Makefile
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/pci/Makefile Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,38 +0,0 @@
-#
-# Makefile for X86_64 specific PCI routines
-#
-# Reuse the i386 PCI subsystem
-#
-XENARCH := $(subst ",,$(CONFIG_XENARCH))
-CFLAGS += -Iarch/$(XENARCH)/pci
-
-CFLAGS += -Iarch/i386/pci
-
-c-i386-obj-y := i386.o
-c-i386-obj-y += fixup.o
-c-i386-obj-$(CONFIG_ACPI_PCI) += acpi.o
-c-i386-obj-y += legacy.o common.o
-c-i386-obj-$(CONFIG_PCI_DIRECT)+= direct.o
-c-xen-obj-y += irq.o
-# mmconfig has a 64bit special
-c-obj-$(CONFIG_PCI_MMCONFIG) += mmconfig.o
-
-c-obj-$(CONFIG_NUMA) += k8-bus.o
-
-c-link :=
-
-$(patsubst %.o,$(obj)/%.c,$(c-xen-obj-y)):
- @ln -fsn $(srctree)/arch/xen/i386/pci/$(notdir $@) $@
-
-$(patsubst %.o,$(obj)/%.c,$(c-obj-y) $(c-link)):
- @ln -fsn $(srctree)/arch/x86_64/pci/$(notdir $@) $@
-
-$(patsubst %.o,$(obj)/%.c,$(c-i386-obj-y)):
- @ln -fsn $(srctree)/arch/i386/pci/$(notdir $@) $@
-
-obj-y += $(c-i386-obj-y) $(c-obj-y)
-obj-y += $(c-xen-obj-y)
-
-clean-files += $(patsubst %.o,%.c,$(c-obj-y) $(c-obj-) $(c-link))
-clean-files += $(patsubst %.o,%.c,$(c-i386-obj-y) $(c-i386-obj-))
-clean-files += $(patsubst %.o,%.c,$(c-xen-obj-y) $(c-xen-obj-))
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/arch/xen/x86_64/pci/Makefile-BUS
--- a/linux-2.6.11-xen-sparse/arch/xen/x86_64/pci/Makefile-BUS Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,22 +0,0 @@
-#
-# Makefile for X86_64 specific PCI routines
-#
-# Reuse the i386 PCI subsystem
-#
-CFLAGS += -I arch/i386/pci
-
-obj-y := i386.o
-obj-$(CONFIG_PCI_DIRECT)+= direct.o
-obj-y += fixup.o
-obj-$(CONFIG_ACPI_PCI) += acpi.o
-obj-y += legacy.o irq.o common.o
-# mmconfig has a 64bit special
-obj-$(CONFIG_PCI_MMCONFIG) += mmconfig.o
-
-direct-y += ../../i386/pci/direct.o
-acpi-y += ../../i386/pci/acpi.o
-legacy-y += ../../i386/pci/legacy.o
-irq-y += ../../i386/pci/irq.o
-common-y += ../../i386/pci/common.o
-fixup-y += ../../i386/pci/fixup.o
-i386-y += ../../i386/pci/i386.o
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.6.11-xen-sparse/drivers/Makefile
--- a/linux-2.6.11-xen-sparse/drivers/Makefile Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,66 +0,0 @@
-#
-# Makefile for the Linux kernel device drivers.
-#
-# 15 Sep 2000, Christoph Hellwig <hch@xxxxxxxxxxxxx>
-# Rewritten to use lists instead of if-statements.
-#
-
-obj-$(CONFIG_PCI) += pci/
-obj-$(CONFIG_PARISC) += parisc/
-obj-y += video/
-obj-$(CONFIG_ACPI_BOOT) += acpi/
-# PnP must come after ACPI since it will eventually need to check if acpi
-# was used and do nothing if so
-obj-$(CONFIG_PNP) += pnp/
-
-# char/ comes before serial/ etc so that the VT console is the boot-time
-# default.
-obj-y += char/
-
-# i810fb and intelfb depend on char/agp/
-obj-$(CONFIG_FB_I810) += video/i810/
-obj-$(CONFIG_FB_INTEL) += video/intelfb/
-
-# we also need input/serio early so serio bus is initialized by the time
-# serial drivers start registering their serio ports
-obj-$(CONFIG_SERIO) += input/serio/
-obj-y += serial/
-obj-$(CONFIG_PARPORT) += parport/
-obj-y += base/ block/ misc/ net/ media/
-obj-$(CONFIG_NUBUS) += nubus/
-obj-$(CONFIG_ATM) += atm/
-obj-$(CONFIG_PPC_PMAC) += macintosh/
-obj-$(CONFIG_ARCH_XEN) += xen/
-obj-$(CONFIG_IDE) += ide/
-obj-$(CONFIG_FC4) += fc4/
-obj-$(CONFIG_SCSI) += scsi/
-obj-$(CONFIG_FUSION) += message/
-obj-$(CONFIG_IEEE1394) += ieee1394/
-obj-y += cdrom/
-obj-$(CONFIG_MTD) += mtd/
-obj-$(CONFIG_PCCARD) += pcmcia/
-obj-$(CONFIG_DIO) += dio/
-obj-$(CONFIG_SBUS) += sbus/
-obj-$(CONFIG_ZORRO) += zorro/
-obj-$(CONFIG_MAC) += macintosh/
-obj-$(CONFIG_ATA_OVER_ETH) += block/aoe/
-obj-$(CONFIG_PARIDE) += block/paride/
-obj-$(CONFIG_TC) += tc/
-obj-$(CONFIG_USB) += usb/
-obj-$(CONFIG_USB_GADGET) += usb/gadget/
-obj-$(CONFIG_INPUT) += input/
-obj-$(CONFIG_GAMEPORT) += input/gameport/
-obj-$(CONFIG_I2O) += message/
-obj-$(CONFIG_I2C) += i2c/
-obj-$(CONFIG_W1) += w1/
-obj-$(CONFIG_PHONE) += telephony/
-obj-$(CONFIG_MD) += md/
-obj-$(CONFIG_BT) += bluetooth/
-obj-$(CONFIG_ISDN) += isdn/
-obj-$(CONFIG_MCA) += mca/
-obj-$(CONFIG_EISA) += eisa/
-obj-$(CONFIG_CPU_FREQ) += cpufreq/
-obj-$(CONFIG_MMC) += mmc/
-obj-$(CONFIG_INFINIBAND) += infiniband/
-obj-y += firmware/
-obj-$(CONFIG_CRYPTO) += crypto/
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/acpi/tables.c
--- a/linux-2.6.11-xen-sparse/drivers/acpi/tables.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,615 +0,0 @@
-/*
- * acpi_tables.c - ACPI Boot-Time Table Parsing
- *
- * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@xxxxxxxxx>
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- */
-
-#include <linux/config.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/smp.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/irq.h>
-#include <linux/errno.h>
-#include <linux/acpi.h>
-#include <linux/bootmem.h>
-
-#define PREFIX "ACPI: "
-
-#define ACPI_MAX_TABLES 256
-
-static char *acpi_table_signatures[ACPI_TABLE_COUNT] = {
- [ACPI_TABLE_UNKNOWN] = "????",
- [ACPI_APIC] = "APIC",
- [ACPI_BOOT] = "BOOT",
- [ACPI_DBGP] = "DBGP",
- [ACPI_DSDT] = "DSDT",
- [ACPI_ECDT] = "ECDT",
- [ACPI_ETDT] = "ETDT",
- [ACPI_FADT] = "FACP",
- [ACPI_FACS] = "FACS",
- [ACPI_OEMX] = "OEM",
- [ACPI_PSDT] = "PSDT",
- [ACPI_SBST] = "SBST",
- [ACPI_SLIT] = "SLIT",
- [ACPI_SPCR] = "SPCR",
- [ACPI_SRAT] = "SRAT",
- [ACPI_SSDT] = "SSDT",
- [ACPI_SPMI] = "SPMI",
- [ACPI_HPET] = "HPET",
- [ACPI_MCFG] = "MCFG",
-};
-
-static char *mps_inti_flags_polarity[] = { "dfl", "high", "res", "low" };
-static char *mps_inti_flags_trigger[] = { "dfl", "edge", "res", "level" };
-
-/* System Description Table (RSDT/XSDT) */
-struct acpi_table_sdt {
- unsigned long pa;
- enum acpi_table_id id;
- unsigned long size;
-} __attribute__ ((packed));
-
-static unsigned long sdt_pa; /* Physical Address */
-static unsigned long sdt_count; /* Table count */
-
-static struct acpi_table_sdt sdt_entry[ACPI_MAX_TABLES];
-
-void
-acpi_table_print (
- struct acpi_table_header *header,
- unsigned long phys_addr)
-{
- char *name = NULL;
-
- if (!header)
- return;
-
- /* Some table signatures aren't good table names */
-
- if (!strncmp((char *) &header->signature,
- acpi_table_signatures[ACPI_APIC],
- sizeof(header->signature))) {
- name = "MADT";
- }
- else if (!strncmp((char *) &header->signature,
- acpi_table_signatures[ACPI_FADT],
- sizeof(header->signature))) {
- name = "FADT";
- }
- else
- name = header->signature;
-
- printk(KERN_DEBUG PREFIX "%.4s (v%3.3d %6.6s %8.8s 0x%08x %.4s 0x%08x)
@ 0x%p\n",
- name, header->revision, header->oem_id,
- header->oem_table_id, header->oem_revision,
- header->asl_compiler_id, header->asl_compiler_revision,
- (void *) phys_addr);
-}
-
-
-void
-acpi_table_print_madt_entry (
- acpi_table_entry_header *header)
-{
- if (!header)
- return;
-
- switch (header->type) {
-
- case ACPI_MADT_LAPIC:
- {
- struct acpi_table_lapic *p =
- (struct acpi_table_lapic*) header;
- printk(KERN_INFO PREFIX "LAPIC (acpi_id[0x%02x]
lapic_id[0x%02x] %s)\n",
- p->acpi_id, p->id,
p->flags.enabled?"enabled":"disabled");
- }
- break;
-
- case ACPI_MADT_IOAPIC:
- {
- struct acpi_table_ioapic *p =
- (struct acpi_table_ioapic*) header;
- printk(KERN_INFO PREFIX "IOAPIC (id[0x%02x] address[0x%08x]
gsi_base[%d])\n",
- p->id, p->address, p->global_irq_base);
- }
- break;
-
- case ACPI_MADT_INT_SRC_OVR:
- {
- struct acpi_table_int_src_ovr *p =
- (struct acpi_table_int_src_ovr*) header;
- printk(KERN_INFO PREFIX "INT_SRC_OVR (bus %d bus_irq %d
global_irq %d %s %s)\n",
- p->bus, p->bus_irq, p->global_irq,
- mps_inti_flags_polarity[p->flags.polarity],
- mps_inti_flags_trigger[p->flags.trigger]);
- if(p->flags.reserved)
- printk(KERN_INFO PREFIX "INT_SRC_OVR unexpected
reserved flags: 0x%x\n",
- p->flags.reserved);
-
- }
- break;
-
- case ACPI_MADT_NMI_SRC:
- {
- struct acpi_table_nmi_src *p =
- (struct acpi_table_nmi_src*) header;
- printk(KERN_INFO PREFIX "NMI_SRC (%s %s global_irq %d)\n",
- mps_inti_flags_polarity[p->flags.polarity],
- mps_inti_flags_trigger[p->flags.trigger],
p->global_irq);
- }
- break;
-
- case ACPI_MADT_LAPIC_NMI:
- {
- struct acpi_table_lapic_nmi *p =
- (struct acpi_table_lapic_nmi*) header;
- printk(KERN_INFO PREFIX "LAPIC_NMI (acpi_id[0x%02x] %s %s
lint[0x%x])\n",
- p->acpi_id,
- mps_inti_flags_polarity[p->flags.polarity],
- mps_inti_flags_trigger[p->flags.trigger], p->lint);
- }
- break;
-
- case ACPI_MADT_LAPIC_ADDR_OVR:
- {
- struct acpi_table_lapic_addr_ovr *p =
- (struct acpi_table_lapic_addr_ovr*) header;
- printk(KERN_INFO PREFIX "LAPIC_ADDR_OVR (address[%p])\n",
- (void *) (unsigned long) p->address);
- }
- break;
-
- case ACPI_MADT_IOSAPIC:
- {
- struct acpi_table_iosapic *p =
- (struct acpi_table_iosapic*) header;
- printk(KERN_INFO PREFIX "IOSAPIC (id[0x%x] address[%p]
gsi_base[%d])\n",
- p->id, (void *) (unsigned long) p->address,
p->global_irq_base);
- }
- break;
-
- case ACPI_MADT_LSAPIC:
- {
- struct acpi_table_lsapic *p =
- (struct acpi_table_lsapic*) header;
- printk(KERN_INFO PREFIX "LSAPIC (acpi_id[0x%02x]
lsapic_id[0x%02x] lsapic_eid[0x%02x] %s)\n",
- p->acpi_id, p->id, p->eid,
p->flags.enabled?"enabled":"disabled");
- }
- break;
-
- case ACPI_MADT_PLAT_INT_SRC:
- {
- struct acpi_table_plat_int_src *p =
- (struct acpi_table_plat_int_src*) header;
- printk(KERN_INFO PREFIX "PLAT_INT_SRC (%s %s type[0x%x]
id[0x%04x] eid[0x%x] iosapic_vector[0x%x] global_irq[0x%x]\n",
- mps_inti_flags_polarity[p->flags.polarity],
- mps_inti_flags_trigger[p->flags.trigger],
- p->type, p->id, p->eid, p->iosapic_vector,
p->global_irq);
- }
- break;
-
- default:
- printk(KERN_WARNING PREFIX "Found unsupported MADT entry (type
= 0x%x)\n",
- header->type);
- break;
- }
-}
-
-
-static int
-acpi_table_compute_checksum (
- void *table_pointer,
- unsigned long length)
-{
- u8 *p = (u8 *) table_pointer;
- unsigned long remains = length;
- unsigned long sum = 0;
-
- if (!p || !length)
- return -EINVAL;
-
- while (remains--)
- sum += *p++;
-
- return (sum & 0xFF);
-}
-
-/*
- * acpi_get_table_header_early()
- * for acpi_blacklisted(), acpi_table_get_sdt()
- */
-int __init
-acpi_get_table_header_early (
- enum acpi_table_id id,
- struct acpi_table_header **header)
-{
- unsigned int i;
- enum acpi_table_id temp_id;
-
- /* DSDT is different from the rest */
- if (id == ACPI_DSDT)
- temp_id = ACPI_FADT;
- else
- temp_id = id;
-
- /* Locate the table. */
-
- for (i = 0; i < sdt_count; i++) {
- if (sdt_entry[i].id != temp_id)
- continue;
- *header = (void *)
- __acpi_map_table(sdt_entry[i].pa, sdt_entry[i].size);
- if (!*header) {
- printk(KERN_WARNING PREFIX "Unable to map %s\n",
- acpi_table_signatures[temp_id]);
- return -ENODEV;
- }
- break;
- }
-
- if (!*header) {
- printk(KERN_WARNING PREFIX "%s not present\n",
- acpi_table_signatures[id]);
- return -ENODEV;
- }
-
- /* Map the DSDT header via the pointer in the FADT */
- if (id == ACPI_DSDT) {
- struct fadt_descriptor_rev2 *fadt = (struct
fadt_descriptor_rev2 *) *header;
-
- if (fadt->revision == 3 && fadt->Xdsdt) {
- *header = (void *) __acpi_map_table(fadt->Xdsdt,
- sizeof(struct acpi_table_header));
- } else if (fadt->V1_dsdt) {
- *header = (void *) __acpi_map_table(fadt->V1_dsdt,
- sizeof(struct acpi_table_header));
- } else
- *header = NULL;
-
- if (!*header) {
- printk(KERN_WARNING PREFIX "Unable to map DSDT\n");
- return -ENODEV;
- }
- }
-
- return 0;
-}
-
-
-int __init
-acpi_table_parse_madt_family (
- enum acpi_table_id id,
- unsigned long madt_size,
- int entry_id,
- acpi_madt_entry_handler handler,
- unsigned int max_entries)
-{
- void *madt = NULL;
- acpi_table_entry_header *entry;
- unsigned int count = 0;
- unsigned long madt_end;
- unsigned int i;
-
- if (!handler)
- return -EINVAL;
-
- /* Locate the MADT (if exists). There should only be one. */
-
- for (i = 0; i < sdt_count; i++) {
- if (sdt_entry[i].id != id)
- continue;
- madt = (void *)
- __acpi_map_table(sdt_entry[i].pa, sdt_entry[i].size);
- if (!madt) {
- printk(KERN_WARNING PREFIX "Unable to map %s\n",
- acpi_table_signatures[id]);
- return -ENODEV;
- }
- break;
- }
-
- if (!madt) {
- printk(KERN_WARNING PREFIX "%s not present\n",
- acpi_table_signatures[id]);
- return -ENODEV;
- }
-
- madt_end = (unsigned long) madt + sdt_entry[i].size;
-
- /* Parse all entries looking for a match. */
-
- entry = (acpi_table_entry_header *)
- ((unsigned long) madt + madt_size);
-
- while (((unsigned long) entry) + sizeof(acpi_table_entry_header) <
madt_end) {
- if (entry->type == entry_id &&
- (!max_entries || count++ < max_entries))
- if (handler(entry, madt_end))
- return -EINVAL;
-
- entry = (acpi_table_entry_header *)
- ((unsigned long) entry + entry->length);
- }
- if (max_entries && count > max_entries) {
- printk(KERN_WARNING PREFIX "[%s:0x%02x] ignored %i entries of "
- "%i found\n", acpi_table_signatures[id], entry_id,
- count - max_entries, count);
- }
-
- return count;
-}
-
-
-int __init
-acpi_table_parse_madt (
- enum acpi_madt_entry_id id,
- acpi_madt_entry_handler handler,
- unsigned int max_entries)
-{
- return acpi_table_parse_madt_family(ACPI_APIC, sizeof(struct
acpi_table_madt),
- id, handler, max_entries);
-}
-
-
-int __init
-acpi_table_parse (
- enum acpi_table_id id,
- acpi_table_handler handler)
-{
- int count = 0;
- unsigned int i = 0;
-
- if (!handler)
- return -EINVAL;
-
- for (i = 0; i < sdt_count; i++) {
- if (sdt_entry[i].id != id)
- continue;
- count++;
- if (count == 1)
- handler(sdt_entry[i].pa, sdt_entry[i].size);
-
- else
- printk(KERN_WARNING PREFIX "%d duplicate %s table
ignored.\n",
- count, acpi_table_signatures[id]);
- }
-
- return count;
-}
-
-
-static int __init
-acpi_table_get_sdt (
- struct acpi_table_rsdp *rsdp)
-{
- struct acpi_table_header *header = NULL;
- unsigned int i, id = 0;
-
- if (!rsdp)
- return -EINVAL;
-
- /* First check XSDT (but only on ACPI 2.0-compatible systems) */
-
- if ((rsdp->revision >= 2) &&
- (((struct acpi20_table_rsdp*)rsdp)->xsdt_address)) {
-
- struct acpi_table_xsdt *mapped_xsdt = NULL;
-
- sdt_pa = ((struct acpi20_table_rsdp*)rsdp)->xsdt_address;
-
- /* map in just the header */
- header = (struct acpi_table_header *)
- __acpi_map_table(sdt_pa, sizeof(struct
acpi_table_header));
-
- if (!header) {
- printk(KERN_WARNING PREFIX "Unable to map XSDT
header\n");
- return -ENODEV;
- }
-
- /* remap in the entire table before processing */
- mapped_xsdt = (struct acpi_table_xsdt *)
- __acpi_map_table(sdt_pa, header->length);
- if (!mapped_xsdt) {
- printk(KERN_WARNING PREFIX "Unable to map XSDT\n");
- return -ENODEV;
- }
- header = &mapped_xsdt->header;
-
- if (strncmp(header->signature, "XSDT", 4)) {
- printk(KERN_WARNING PREFIX "XSDT signature
incorrect\n");
- return -ENODEV;
- }
-
- if (acpi_table_compute_checksum(header, header->length)) {
- printk(KERN_WARNING PREFIX "Invalid XSDT checksum\n");
- return -ENODEV;
- }
-
- sdt_count = (header->length - sizeof(struct acpi_table_header))
>> 3;
- if (sdt_count > ACPI_MAX_TABLES) {
- printk(KERN_WARNING PREFIX "Truncated %lu XSDT
entries\n",
- (sdt_count - ACPI_MAX_TABLES));
- sdt_count = ACPI_MAX_TABLES;
- }
-
- for (i = 0; i < sdt_count; i++)
- sdt_entry[i].pa = (unsigned long) mapped_xsdt->entry[i];
- }
-
- /* Then check RSDT */
-
- else if (rsdp->rsdt_address) {
-
- struct acpi_table_rsdt *mapped_rsdt = NULL;
-
- sdt_pa = rsdp->rsdt_address;
-
- /* map in just the header */
- header = (struct acpi_table_header *)
- __acpi_map_table(sdt_pa, sizeof(struct
acpi_table_header));
- if (!header) {
- printk(KERN_WARNING PREFIX "Unable to map RSDT
header\n");
- return -ENODEV;
- }
-
- /* remap in the entire table before processing */
- mapped_rsdt = (struct acpi_table_rsdt *)
- __acpi_map_table(sdt_pa, header->length);
- if (!mapped_rsdt) {
- printk(KERN_WARNING PREFIX "Unable to map RSDT\n");
- return -ENODEV;
- }
- header = &mapped_rsdt->header;
-
- if (strncmp(header->signature, "RSDT", 4)) {
- printk(KERN_WARNING PREFIX "RSDT signature
incorrect\n");
- return -ENODEV;
- }
-
- if (acpi_table_compute_checksum(header, header->length)) {
- printk(KERN_WARNING PREFIX "Invalid RSDT checksum\n");
- return -ENODEV;
- }
-
- sdt_count = (header->length - sizeof(struct acpi_table_header))
>> 2;
- if (sdt_count > ACPI_MAX_TABLES) {
- printk(KERN_WARNING PREFIX "Truncated %lu RSDT
entries\n",
- (sdt_count - ACPI_MAX_TABLES));
- sdt_count = ACPI_MAX_TABLES;
- }
-
- for (i = 0; i < sdt_count; i++)
- sdt_entry[i].pa = (unsigned long) mapped_rsdt->entry[i];
- }
-
- else {
- printk(KERN_WARNING PREFIX "No System Description Table
(RSDT/XSDT) specified in RSDP\n");
- return -ENODEV;
- }
-
- acpi_table_print(header, sdt_pa);
-
- for (i = 0; i < sdt_count; i++) {
-
- /* map in just the header */
- header = (struct acpi_table_header *)
- __acpi_map_table(sdt_entry[i].pa,
- sizeof(struct acpi_table_header));
- if (!header)
- continue;
-
- /* remap in the entire table before processing */
- header = (struct acpi_table_header *)
- __acpi_map_table(sdt_entry[i].pa,
- header->length);
- if (!header)
- continue;
-
- acpi_table_print(header, sdt_entry[i].pa);
-
- if (acpi_table_compute_checksum(header, header->length)) {
- printk(KERN_WARNING " >>> ERROR: Invalid checksum\n");
- continue;
- }
-
- sdt_entry[i].size = header->length;
-
- for (id = 0; id < ACPI_TABLE_COUNT; id++) {
- if (!strncmp((char *) &header->signature,
- acpi_table_signatures[id],
- sizeof(header->signature))) {
- sdt_entry[i].id = id;
- }
- }
- }
-
- /*
- * The DSDT is *not* in the RSDT (why not? no idea.) but we want
- * to print its info, because this is what people usually blacklist
- * against. Unfortunately, we don't know the phys_addr, so just
- * print 0. Maybe no one will notice.
- */
- if(!acpi_get_table_header_early(ACPI_DSDT, &header))
- acpi_table_print(header, 0);
-
- return 0;
-}
-
-/*
- * acpi_table_init()
- *
- * find RSDP, find and checksum SDT/XSDT.
- * checksum all tables, print SDT/XSDT
- *
- * result: sdt_entry[] is initialized
- */
-#if CONFIG_XEN
-#define acpi_rsdp_phys_to_va(rsdp_phys) (__fix_to_virt(FIX_ACPI_RSDP_PAGE) + \
- (rsdp_phys & ~PAGE_MASK))
-#else
-#define acpi_rsdp_phys_to_va(rsdp_phys) __va(rsdp_phys)
-#endif
-
-int __init
-acpi_table_init (void)
-{
- struct acpi_table_rsdp *rsdp = NULL;
- unsigned long rsdp_phys = 0;
- int result = 0;
-
- /* Locate and map the Root System Description Table (RSDP) */
-
- rsdp_phys = acpi_find_rsdp();
- if (!rsdp_phys) {
- printk(KERN_ERR PREFIX "Unable to locate RSDP\n");
- return -ENODEV;
- }
-
- rsdp = (struct acpi_table_rsdp *) acpi_rsdp_phys_to_va(rsdp_phys);
- if (!rsdp) {
- printk(KERN_WARNING PREFIX "Unable to map RSDP\n");
- return -ENODEV;
- }
-
- printk(KERN_DEBUG PREFIX "RSDP (v%3.3d %6.6s
) @ 0x%p\n",
- rsdp->revision, rsdp->oem_id, (void *) rsdp_phys);
-
- if (rsdp->revision < 2)
- result = acpi_table_compute_checksum(rsdp, sizeof(struct
acpi_table_rsdp));
- else
- result = acpi_table_compute_checksum(rsdp, ((struct
acpi20_table_rsdp *)rsdp)->length);
-
- if (result) {
- printk(KERN_WARNING " >>> ERROR: Invalid checksum\n");
- return -ENODEV;
- }
-
- /* Locate and map the System Description table (RSDT/XSDT) */
-
- if (acpi_table_get_sdt(rsdp))
- return -ENODEV;
-
- return 0;
-}
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.6.11-xen-sparse/drivers/char/mem.c
--- a/linux-2.6.11-xen-sparse/drivers/char/mem.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,733 +0,0 @@
-/*
- * linux/drivers/char/mem.c
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- *
- * Added devfs support.
- * Jan-11-1998, C. Scott Ananian <cananian@xxxxxxxxxxxxxxxxxxxx>
- * Shared /dev/zero mmaping support, Feb 2000, Kanoj Sarcar <kanoj@xxxxxxx>
- */
-
-#include <linux/config.h>
-#include <linux/mm.h>
-#include <linux/miscdevice.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/mman.h>
-#include <linux/random.h>
-#include <linux/init.h>
-#include <linux/raw.h>
-#include <linux/tty.h>
-#include <linux/capability.h>
-#include <linux/smp_lock.h>
-#include <linux/devfs_fs_kernel.h>
-#include <linux/ptrace.h>
-#include <linux/device.h>
-
-#include <asm/uaccess.h>
-#include <asm/io.h>
-
-#ifdef CONFIG_IA64
-# include <linux/efi.h>
-#endif
-
-#if defined(CONFIG_S390_TAPE) && defined(CONFIG_S390_TAPE_CHAR)
-extern void tapechar_init(void);
-#endif
-
-/*
- * Architectures vary in how they handle caching for addresses
- * outside of main memory.
- *
- */
-static inline int uncached_access(struct file *file, unsigned long addr)
-{
-#if defined(__i386__)
- /*
- * On the PPro and successors, the MTRRs are used to set
- * memory types for physical addresses outside main memory,
- * so blindly setting PCD or PWT on those pages is wrong.
- * For Pentiums and earlier, the surround logic should disable
- * caching for the high addresses through the KEN pin, but
- * we maintain the tradition of paranoia in this code.
- */
- if (file->f_flags & O_SYNC)
- return 1;
- return !( test_bit(X86_FEATURE_MTRR, boot_cpu_data.x86_capability) ||
- test_bit(X86_FEATURE_K6_MTRR, boot_cpu_data.x86_capability) ||
- test_bit(X86_FEATURE_CYRIX_ARR, boot_cpu_data.x86_capability)
||
- test_bit(X86_FEATURE_CENTAUR_MCR,
boot_cpu_data.x86_capability) )
- && addr >= __pa(high_memory);
-#elif defined(__x86_64__)
- /*
- * This is broken because it can generate memory type aliases,
- * which can cause cache corruptions
- * But it is only available for root and we have to be bug-to-bug
- * compatible with i386.
- */
- if (file->f_flags & O_SYNC)
- return 1;
- /* same behaviour as i386. PAT always set to cached and MTRRs control
the
- caching behaviour.
- Hopefully a full PAT implementation will fix that soon. */
- return 0;
-#elif defined(CONFIG_IA64)
- /*
- * On ia64, we ignore O_SYNC because we cannot tolerate memory
attribute aliases.
- */
- return !(efi_mem_attributes(addr) & EFI_MEMORY_WB);
-#elif defined(CONFIG_PPC64)
- /* On PPC64, we always do non-cacheable access to the IO hole and
- * cacheable elsewhere. Cache paradox can checkstop the CPU and
- * the high_memory heuristic below is wrong on machines with memory
- * above the IO hole... Ah, and of course, XFree86 doesn't pass
- * O_SYNC when mapping us to tap IO space. Surprised ?
- */
- return !page_is_ram(addr >> PAGE_SHIFT);
-#else
- /*
- * Accessing memory above the top the kernel knows about or through a
file pointer
- * that was marked O_SYNC will be done non-cached.
- */
- if (file->f_flags & O_SYNC)
- return 1;
- return addr >= __pa(high_memory);
-#endif
-}
-
-#ifndef ARCH_HAS_VALID_PHYS_ADDR_RANGE
-static inline int valid_phys_addr_range(unsigned long addr, size_t *count)
-{
- unsigned long end_mem;
-
- end_mem = __pa(high_memory);
- if (addr >= end_mem)
- return 0;
-
- if (*count > end_mem - addr)
- *count = end_mem - addr;
-
- return 1;
-}
-#endif
-
-static ssize_t do_write_mem(void *p, unsigned long realp,
- const char __user * buf, size_t count, loff_t *ppos)
-{
- ssize_t written;
- unsigned long copied;
-
- written = 0;
-#if defined(__sparc__) || (defined(__mc68000__) && defined(CONFIG_MMU))
- /* we don't have page 0 mapped on sparc and m68k.. */
- if (realp < PAGE_SIZE) {
- unsigned long sz = PAGE_SIZE-realp;
- if (sz > count) sz = count;
- /* Hmm. Do something? */
- buf+=sz;
- p+=sz;
- count-=sz;
- written+=sz;
- }
-#endif
- copied = copy_from_user(p, buf, count);
- if (copied) {
- ssize_t ret = written + (count - copied);
-
- if (ret)
- return ret;
- return -EFAULT;
- }
- written += count;
- *ppos += written;
- return written;
-}
-
-#ifndef ARCH_HAS_DEV_MEM
-/*
- * This funcion reads the *physical* memory. The f_pos points directly to the
- * memory location.
- */
-static ssize_t read_mem(struct file * file, char __user * buf,
- size_t count, loff_t *ppos)
-{
- unsigned long p = *ppos;
- ssize_t read;
-
- if (!valid_phys_addr_range(p, &count))
- return -EFAULT;
- read = 0;
-#if defined(__sparc__) || (defined(__mc68000__) && defined(CONFIG_MMU))
- /* we don't have page 0 mapped on sparc and m68k.. */
- if (p < PAGE_SIZE) {
- unsigned long sz = PAGE_SIZE-p;
- if (sz > count)
- sz = count;
- if (sz > 0) {
- if (clear_user(buf, sz))
- return -EFAULT;
- buf += sz;
- p += sz;
- count -= sz;
- read += sz;
- }
- }
-#endif
- if (copy_to_user(buf, __va(p), count))
- return -EFAULT;
- read += count;
- *ppos += read;
- return read;
-}
-
-static ssize_t write_mem(struct file * file, const char __user * buf,
- size_t count, loff_t *ppos)
-{
- unsigned long p = *ppos;
-
- if (!valid_phys_addr_range(p, &count))
- return -EFAULT;
- return do_write_mem(__va(p), p, buf, count, ppos);
-}
-#endif
-
-static int mmap_kmem(struct file * file, struct vm_area_struct * vma)
-{
-#ifdef pgprot_noncached
- unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
- int uncached;
-
- uncached = uncached_access(file, offset);
- if (uncached)
- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-#endif
-
- /* Remap-pfn-range will mark the range VM_IO and VM_RESERVED */
- if (remap_pfn_range(vma,
- vma->vm_start,
- vma->vm_pgoff,
- vma->vm_end-vma->vm_start,
- vma->vm_page_prot))
- return -EAGAIN;
- return 0;
-}
-
-extern long vread(char *buf, char *addr, unsigned long count);
-extern long vwrite(char *buf, char *addr, unsigned long count);
-
-/*
- * This function reads the *virtual* memory as seen by the kernel.
- */
-static ssize_t read_kmem(struct file *file, char __user *buf,
- size_t count, loff_t *ppos)
-{
- unsigned long p = *ppos;
- ssize_t read = 0;
- ssize_t virtr = 0;
- char * kbuf; /* k-addr because vread() takes vmlist_lock rwlock */
-
- if (p < (unsigned long) high_memory) {
- read = count;
- if (count > (unsigned long) high_memory - p)
- read = (unsigned long) high_memory - p;
-
-#if defined(__sparc__) || (defined(__mc68000__) && defined(CONFIG_MMU))
- /* we don't have page 0 mapped on sparc and m68k.. */
- if (p < PAGE_SIZE && read > 0) {
- size_t tmp = PAGE_SIZE - p;
- if (tmp > read) tmp = read;
- if (clear_user(buf, tmp))
- return -EFAULT;
- buf += tmp;
- p += tmp;
- read -= tmp;
- count -= tmp;
- }
-#endif
- if (copy_to_user(buf, (char *)p, read))
- return -EFAULT;
- p += read;
- buf += read;
- count -= read;
- }
-
- if (count > 0) {
- kbuf = (char *)__get_free_page(GFP_KERNEL);
- if (!kbuf)
- return -ENOMEM;
- while (count > 0) {
- int len = count;
-
- if (len > PAGE_SIZE)
- len = PAGE_SIZE;
- len = vread(kbuf, (char *)p, len);
- if (!len)
- break;
- if (copy_to_user(buf, kbuf, len)) {
- free_page((unsigned long)kbuf);
- return -EFAULT;
- }
- count -= len;
- buf += len;
- virtr += len;
- p += len;
- }
- free_page((unsigned long)kbuf);
- }
- *ppos = p;
- return virtr + read;
-}
-
-/*
- * This function writes to the *virtual* memory as seen by the kernel.
- */
-static ssize_t write_kmem(struct file * file, const char __user * buf,
- size_t count, loff_t *ppos)
-{
- unsigned long p = *ppos;
- ssize_t wrote = 0;
- ssize_t virtr = 0;
- ssize_t written;
- char * kbuf; /* k-addr because vwrite() takes vmlist_lock rwlock */
-
- if (p < (unsigned long) high_memory) {
-
- wrote = count;
- if (count > (unsigned long) high_memory - p)
- wrote = (unsigned long) high_memory - p;
-
- written = do_write_mem((void*)p, p, buf, wrote, ppos);
- if (written != wrote)
- return written;
- wrote = written;
- p += wrote;
- buf += wrote;
- count -= wrote;
- }
-
- if (count > 0) {
- kbuf = (char *)__get_free_page(GFP_KERNEL);
- if (!kbuf)
- return wrote ? wrote : -ENOMEM;
- while (count > 0) {
- int len = count;
-
- if (len > PAGE_SIZE)
- len = PAGE_SIZE;
- if (len) {
- written = copy_from_user(kbuf, buf, len);
- if (written) {
- ssize_t ret;
-
- free_page((unsigned long)kbuf);
- ret = wrote + virtr + (len - written);
- return ret ? ret : -EFAULT;
- }
- }
- len = vwrite(kbuf, (char *)p, len);
- count -= len;
- buf += len;
- virtr += len;
- p += len;
- }
- free_page((unsigned long)kbuf);
- }
-
- *ppos = p;
- return virtr + wrote;
-}
-
-#if defined(CONFIG_ISA) || !defined(__mc68000__)
-static ssize_t read_port(struct file * file, char __user * buf,
- size_t count, loff_t *ppos)
-{
- unsigned long i = *ppos;
- char __user *tmp = buf;
-
- if (verify_area(VERIFY_WRITE,buf,count))
- return -EFAULT;
- while (count-- > 0 && i < 65536) {
- if (__put_user(inb(i),tmp) < 0)
- return -EFAULT;
- i++;
- tmp++;
- }
- *ppos = i;
- return tmp-buf;
-}
-
-static ssize_t write_port(struct file * file, const char __user * buf,
- size_t count, loff_t *ppos)
-{
- unsigned long i = *ppos;
- const char __user * tmp = buf;
-
- if (verify_area(VERIFY_READ,buf,count))
- return -EFAULT;
- while (count-- > 0 && i < 65536) {
- char c;
- if (__get_user(c, tmp))
- return -EFAULT;
- outb(c,i);
- i++;
- tmp++;
- }
- *ppos = i;
- return tmp-buf;
-}
-#endif
-
-static ssize_t read_null(struct file * file, char __user * buf,
- size_t count, loff_t *ppos)
-{
- return 0;
-}
-
-static ssize_t write_null(struct file * file, const char __user * buf,
- size_t count, loff_t *ppos)
-{
- return count;
-}
-
-#ifdef CONFIG_MMU
-/*
- * For fun, we are using the MMU for this.
- */
-static inline size_t read_zero_pagealigned(char __user * buf, size_t size)
-{
- struct mm_struct *mm;
- struct vm_area_struct * vma;
- unsigned long addr=(unsigned long)buf;
-
- mm = current->mm;
- /* Oops, this was forgotten before. -ben */
- down_read(&mm->mmap_sem);
-
- /* For private mappings, just map in zero pages. */
- for (vma = find_vma(mm, addr); vma; vma = vma->vm_next) {
- unsigned long count;
-
- if (vma->vm_start > addr || (vma->vm_flags & VM_WRITE) == 0)
- goto out_up;
- if (vma->vm_flags & (VM_SHARED | VM_HUGETLB))
- break;
- count = vma->vm_end - addr;
- if (count > size)
- count = size;
-
- zap_page_range(vma, addr, count, NULL);
- zeromap_page_range(vma, addr, count, PAGE_COPY);
-
- size -= count;
- buf += count;
- addr += count;
- if (size == 0)
- goto out_up;
- }
-
- up_read(&mm->mmap_sem);
-
- /* The shared case is hard. Let's do the conventional zeroing. */
- do {
- unsigned long unwritten = clear_user(buf, PAGE_SIZE);
- if (unwritten)
- return size + unwritten - PAGE_SIZE;
- cond_resched();
- buf += PAGE_SIZE;
- size -= PAGE_SIZE;
- } while (size);
-
- return size;
-out_up:
- up_read(&mm->mmap_sem);
- return size;
-}
-
-static ssize_t read_zero(struct file * file, char __user * buf,
- size_t count, loff_t *ppos)
-{
- unsigned long left, unwritten, written = 0;
-
- if (!count)
- return 0;
-
- if (!access_ok(VERIFY_WRITE, buf, count))
- return -EFAULT;
-
- left = count;
-
- /* do we want to be clever? Arbitrary cut-off */
- if (count >= PAGE_SIZE*4) {
- unsigned long partial;
-
- /* How much left of the page? */
- partial = (PAGE_SIZE-1) & -(unsigned long) buf;
- unwritten = clear_user(buf, partial);
- written = partial - unwritten;
- if (unwritten)
- goto out;
- left -= partial;
- buf += partial;
- unwritten = read_zero_pagealigned(buf, left & PAGE_MASK);
- written += (left & PAGE_MASK) - unwritten;
- if (unwritten)
- goto out;
- buf += left & PAGE_MASK;
- left &= ~PAGE_MASK;
- }
- unwritten = clear_user(buf, left);
- written += left - unwritten;
-out:
- return written ? written : -EFAULT;
-}
-
-static int mmap_zero(struct file * file, struct vm_area_struct * vma)
-{
- if (vma->vm_flags & VM_SHARED)
- return shmem_zero_setup(vma);
- if (zeromap_page_range(vma, vma->vm_start, vma->vm_end - vma->vm_start,
vma->vm_page_prot))
- return -EAGAIN;
- return 0;
-}
-#else /* CONFIG_MMU */
-static ssize_t read_zero(struct file * file, char * buf,
- size_t count, loff_t *ppos)
-{
- size_t todo = count;
-
- while (todo) {
- size_t chunk = todo;
-
- if (chunk > 4096)
- chunk = 4096; /* Just for latency reasons */
- if (clear_user(buf, chunk))
- return -EFAULT;
- buf += chunk;
- todo -= chunk;
- cond_resched();
- }
- return count;
-}
-
-static int mmap_zero(struct file * file, struct vm_area_struct * vma)
-{
- return -ENOSYS;
-}
-#endif /* CONFIG_MMU */
-
-static ssize_t write_full(struct file * file, const char __user * buf,
- size_t count, loff_t *ppos)
-{
- return -ENOSPC;
-}
-
-/*
- * Special lseek() function for /dev/null and /dev/zero. Most notably, you
- * can fopen() both devices with "a" now. This was previously impossible.
- * -- SRB.
- */
-
-static loff_t null_lseek(struct file * file, loff_t offset, int orig)
-{
- return file->f_pos = 0;
-}
-
-/*
- * The memory devices use the full 32/64 bits of the offset, and so we cannot
- * check against negative addresses: they are ok. The return value is weird,
- * though, in that case (0).
- *
- * also note that seeking relative to the "end of file" isn't supported:
- * it has no meaning, so it returns -EINVAL.
- */
-static loff_t memory_lseek(struct file * file, loff_t offset, int orig)
-{
- loff_t ret;
-
- down(&file->f_dentry->d_inode->i_sem);
- switch (orig) {
- case 0:
- file->f_pos = offset;
- ret = file->f_pos;
- force_successful_syscall_return();
- break;
- case 1:
- file->f_pos += offset;
- ret = file->f_pos;
- force_successful_syscall_return();
- break;
- default:
- ret = -EINVAL;
- }
- up(&file->f_dentry->d_inode->i_sem);
- return ret;
-}
-
-static int open_port(struct inode * inode, struct file * filp)
-{
- return capable(CAP_SYS_RAWIO) ? 0 : -EPERM;
-}
-
-#define mmap_mem mmap_kmem
-#define zero_lseek null_lseek
-#define full_lseek null_lseek
-#define write_zero write_null
-#define read_full read_zero
-#define open_mem open_port
-#define open_kmem open_mem
-
-#ifndef ARCH_HAS_DEV_MEM
-static struct file_operations mem_fops = {
- .llseek = memory_lseek,
- .read = read_mem,
- .write = write_mem,
- .mmap = mmap_mem,
- .open = open_mem,
-};
-#else
-extern struct file_operations mem_fops;
-#endif
-
-static struct file_operations kmem_fops = {
- .llseek = memory_lseek,
- .read = read_kmem,
- .write = write_kmem,
- .mmap = mmap_kmem,
- .open = open_kmem,
-};
-
-static struct file_operations null_fops = {
- .llseek = null_lseek,
- .read = read_null,
- .write = write_null,
-};
-
-#if defined(CONFIG_ISA) || !defined(__mc68000__)
-static struct file_operations port_fops = {
- .llseek = memory_lseek,
- .read = read_port,
- .write = write_port,
- .open = open_port,
-};
-#endif
-
-static struct file_operations zero_fops = {
- .llseek = zero_lseek,
- .read = read_zero,
- .write = write_zero,
- .mmap = mmap_zero,
-};
-
-static struct file_operations full_fops = {
- .llseek = full_lseek,
- .read = read_full,
- .write = write_full,
-};
-
-static ssize_t kmsg_write(struct file * file, const char __user * buf,
- size_t count, loff_t *ppos)
-{
- char *tmp;
- int ret;
-
- tmp = kmalloc(count + 1, GFP_KERNEL);
- if (tmp == NULL)
- return -ENOMEM;
- ret = -EFAULT;
- if (!copy_from_user(tmp, buf, count)) {
- tmp[count] = 0;
- ret = printk("%s", tmp);
- }
- kfree(tmp);
- return ret;
-}
-
-static struct file_operations kmsg_fops = {
- .write = kmsg_write,
-};
-
-static int memory_open(struct inode * inode, struct file * filp)
-{
- switch (iminor(inode)) {
- case 1:
- filp->f_op = &mem_fops;
- break;
- case 2:
- filp->f_op = &kmem_fops;
- break;
- case 3:
- filp->f_op = &null_fops;
- break;
-#if defined(CONFIG_ISA) || !defined(__mc68000__)
- case 4:
- filp->f_op = &port_fops;
- break;
-#endif
- case 5:
- filp->f_op = &zero_fops;
- break;
- case 7:
- filp->f_op = &full_fops;
- break;
- case 8:
- filp->f_op = &random_fops;
- break;
- case 9:
- filp->f_op = &urandom_fops;
- break;
- case 11:
- filp->f_op = &kmsg_fops;
- break;
- default:
- return -ENXIO;
- }
- if (filp->f_op && filp->f_op->open)
- return filp->f_op->open(inode,filp);
- return 0;
-}
-
-static struct file_operations memory_fops = {
- .open = memory_open, /* just a selector for the real open */
-};
-
-static const struct {
- unsigned int minor;
- char *name;
- umode_t mode;
- struct file_operations *fops;
-} devlist[] = { /* list of minor devices */
- {1, "mem", S_IRUSR | S_IWUSR | S_IRGRP, &mem_fops},
- {2, "kmem", S_IRUSR | S_IWUSR | S_IRGRP, &kmem_fops},
- {3, "null", S_IRUGO | S_IWUGO, &null_fops},
-#if defined(CONFIG_ISA) || !defined(__mc68000__)
- {4, "port", S_IRUSR | S_IWUSR | S_IRGRP, &port_fops},
-#endif
- {5, "zero", S_IRUGO | S_IWUGO, &zero_fops},
- {7, "full", S_IRUGO | S_IWUGO, &full_fops},
- {8, "random", S_IRUGO | S_IWUSR, &random_fops},
- {9, "urandom", S_IRUGO | S_IWUSR, &urandom_fops},
- {11,"kmsg", S_IRUGO | S_IWUSR, &kmsg_fops},
-};
-
-static struct class_simple *mem_class;
-
-static int __init chr_dev_init(void)
-{
- int i;
-
- if (register_chrdev(MEM_MAJOR,"mem",&memory_fops))
- printk("unable to get major %d for memory devs\n", MEM_MAJOR);
-
- mem_class = class_simple_create(THIS_MODULE, "mem");
- for (i = 0; i < ARRAY_SIZE(devlist); i++) {
- class_simple_device_add(mem_class,
- MKDEV(MEM_MAJOR, devlist[i].minor),
- NULL, devlist[i].name);
- devfs_mk_cdev(MKDEV(MEM_MAJOR, devlist[i].minor),
- S_IFCHR | devlist[i].mode, devlist[i].name);
- }
-
- return 0;
-}
-
-fs_initcall(chr_dev_init);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/char/tty_io.c
--- a/linux-2.6.11-xen-sparse/drivers/char/tty_io.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,2988 +0,0 @@
-/*
- * linux/drivers/char/tty_io.c
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- */
-
-/*
- * 'tty_io.c' gives an orthogonal feeling to tty's, be they consoles
- * or rs-channels. It also implements echoing, cooked mode etc.
- *
- * Kill-line thanks to John T Kohl, who also corrected VMIN = VTIME = 0.
- *
- * Modified by Theodore Ts'o, 9/14/92, to dynamically allocate the
- * tty_struct and tty_queue structures. Previously there was an array
- * of 256 tty_struct's which was statically allocated, and the
- * tty_queue structures were allocated at boot time. Both are now
- * dynamically allocated only when the tty is open.
- *
- * Also restructured routines so that there is more of a separation
- * between the high-level tty routines (tty_io.c and tty_ioctl.c) and
- * the low-level tty routines (serial.c, pty.c, console.c). This
- * makes for cleaner and more compact code. -TYT, 9/17/92
- *
- * Modified by Fred N. van Kempen, 01/29/93, to add line disciplines
- * which can be dynamically activated and de-activated by the line
- * discipline handling modules (like SLIP).
- *
- * NOTE: pay no attention to the line discipline code (yet); its
- * interface is still subject to change in this version...
- * -- TYT, 1/31/92
- *
- * Added functionality to the OPOST tty handling. No delays, but all
- * other bits should be there.
- * -- Nick Holloway <alfie@xxxxxxxxxxxxxxxxx>, 27th May 1993.
- *
- * Rewrote canonical mode and added more termios flags.
- * -- julian@xxxxxxxxxxxxxxxxxxxxxx (J. Cowley), 13Jan94
- *
- * Reorganized FASYNC support so mouse code can share it.
- * -- ctm@xxxxxxxx, 9Sep95
- *
- * New TIOCLINUX variants added.
- * -- mj@xxxxxxxxxxxxxxxxx, 19-Nov-95
- *
- * Restrict vt switching via ioctl()
- * -- grif@xxxxxxxxxx, 5-Dec-95
- *
- * Move console and virtual terminal code to more appropriate files,
- * implement CONFIG_VT and generalize console device interface.
- * -- Marko Kohtala <Marko.Kohtala@xxxxxx>, March 97
- *
- * Rewrote init_dev and release_dev to eliminate races.
- * -- Bill Hawes <whawes@xxxxxxxx>, June 97
- *
- * Added devfs support.
- * -- C. Scott Ananian <cananian@xxxxxxxxxxxxxxxxxxxx>, 13-Jan-1998
- *
- * Added support for a Unix98-style ptmx device.
- * -- C. Scott Ananian <cananian@xxxxxxxxxxxxxxxxxxxx>, 14-Jan-1998
- *
- * Reduced memory usage for older ARM systems
- * -- Russell King <rmk@xxxxxxxxxxxxxxxx>
- *
- * Move do_SAK() into process context. Less stack use in devfs functions.
- * alloc_tty_struct() always uses kmalloc() -- Andrew Morton
<andrewm@xxxxxxxxxx> 17Mar01
- */
-
-#include <linux/config.h>
-#include <linux/types.h>
-#include <linux/major.h>
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/fcntl.h>
-#include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <linux/tty.h>
-#include <linux/tty_driver.h>
-#include <linux/tty_flip.h>
-#include <linux/devpts_fs.h>
-#include <linux/file.h>
-#include <linux/console.h>
-#include <linux/timer.h>
-#include <linux/ctype.h>
-#include <linux/kd.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/poll.h>
-#include <linux/proc_fs.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/smp_lock.h>
-#include <linux/device.h>
-#include <linux/idr.h>
-#include <linux/wait.h>
-#include <linux/bitops.h>
-
-#include <asm/uaccess.h>
-#include <asm/system.h>
-
-#include <linux/kbd_kern.h>
-#include <linux/vt_kern.h>
-#include <linux/selection.h>
-#include <linux/devfs_fs_kernel.h>
-
-#include <linux/kmod.h>
-
-#undef TTY_DEBUG_HANGUP
-
-#define TTY_PARANOIA_CHECK 1
-#define CHECK_TTY_COUNT 1
-
-struct termios tty_std_termios = { /* for the benefit of tty drivers */
- .c_iflag = ICRNL | IXON,
- .c_oflag = OPOST | ONLCR,
- .c_cflag = B38400 | CS8 | CREAD | HUPCL,
- .c_lflag = ISIG | ICANON | ECHO | ECHOE | ECHOK |
- ECHOCTL | ECHOKE | IEXTEN,
- .c_cc = INIT_C_CC
-};
-
-EXPORT_SYMBOL(tty_std_termios);
-
-/* This list gets poked at by procfs and various bits of boot up code. This
- could do with some rationalisation such as pulling the tty proc function
- into this file */
-
-LIST_HEAD(tty_drivers); /* linked list of tty drivers */
-
-/* Semaphore to protect creating and releasing a tty. This is shared with
- vt.c for deeply disgusting hack reasons */
-DECLARE_MUTEX(tty_sem);
-
-int console_use_vt = 1;
-
-#ifdef CONFIG_UNIX98_PTYS
-extern struct tty_driver *ptm_driver; /* Unix98 pty masters; for /dev/ptmx */
-extern int pty_limit; /* Config limit on Unix98 ptys */
-static DEFINE_IDR(allocated_ptys);
-static DECLARE_MUTEX(allocated_ptys_lock);
-static int ptmx_open(struct inode *, struct file *);
-#endif
-
-extern void disable_early_printk(void);
-
-static void initialize_tty_struct(struct tty_struct *tty);
-
-static ssize_t tty_read(struct file *, char __user *, size_t, loff_t *);
-static ssize_t tty_write(struct file *, const char __user *, size_t, loff_t *);
-ssize_t redirected_tty_write(struct file *, const char __user *, size_t,
loff_t *);
-static unsigned int tty_poll(struct file *, poll_table *);
-static int tty_open(struct inode *, struct file *);
-static int tty_release(struct inode *, struct file *);
-int tty_ioctl(struct inode * inode, struct file * file,
- unsigned int cmd, unsigned long arg);
-static int tty_fasync(int fd, struct file * filp, int on);
-extern void rs_360_init(void);
-static void release_mem(struct tty_struct *tty, int idx);
-
-
-static struct tty_struct *alloc_tty_struct(void)
-{
- struct tty_struct *tty;
-
- tty = kmalloc(sizeof(struct tty_struct), GFP_KERNEL);
- if (tty)
- memset(tty, 0, sizeof(struct tty_struct));
- return tty;
-}
-
-static inline void free_tty_struct(struct tty_struct *tty)
-{
- kfree(tty->write_buf);
- kfree(tty);
-}
-
-#define TTY_NUMBER(tty) ((tty)->index + (tty)->driver->name_base)
-
-char *tty_name(struct tty_struct *tty, char *buf)
-{
- if (!tty) /* Hmm. NULL pointer. That's fun. */
- strcpy(buf, "NULL tty");
- else
- strcpy(buf, tty->name);
- return buf;
-}
-
-EXPORT_SYMBOL(tty_name);
-
-inline int tty_paranoia_check(struct tty_struct *tty, struct inode *inode,
- const char *routine)
-{
-#ifdef TTY_PARANOIA_CHECK
- if (!tty) {
- printk(KERN_WARNING
- "null TTY for (%d:%d) in %s\n",
- imajor(inode), iminor(inode), routine);
- return 1;
- }
- if (tty->magic != TTY_MAGIC) {
- printk(KERN_WARNING
- "bad magic number for tty struct (%d:%d) in %s\n",
- imajor(inode), iminor(inode), routine);
- return 1;
- }
-#endif
- return 0;
-}
-
-static int check_tty_count(struct tty_struct *tty, const char *routine)
-{
-#ifdef CHECK_TTY_COUNT
- struct list_head *p;
- int count = 0;
-
- file_list_lock();
- list_for_each(p, &tty->tty_files) {
- count++;
- }
- file_list_unlock();
- if (tty->driver->type == TTY_DRIVER_TYPE_PTY &&
- tty->driver->subtype == PTY_TYPE_SLAVE &&
- tty->link && tty->link->count)
- count++;
- if (tty->count != count) {
- printk(KERN_WARNING "Warning: dev (%s) tty->count(%d) "
- "!= #fd's(%d) in %s\n",
- tty->name, tty->count, count, routine);
- return count;
- }
-#endif
- return 0;
-}
-
-/*
- * This is probably overkill for real world processors but
- * they are not on hot paths so a little discipline won't do
- * any harm.
- */
-
-static void tty_set_termios_ldisc(struct tty_struct *tty, int num)
-{
- down(&tty->termios_sem);
- tty->termios->c_line = num;
- up(&tty->termios_sem);
-}
-
-/*
- * This guards the refcounted line discipline lists. The lock
- * must be taken with irqs off because there are hangup path
- * callers who will do ldisc lookups and cannot sleep.
- */
-
-static DEFINE_SPINLOCK(tty_ldisc_lock);
-static DECLARE_WAIT_QUEUE_HEAD(tty_ldisc_wait);
-static struct tty_ldisc tty_ldiscs[NR_LDISCS]; /* line disc dispatch table
*/
-
-int tty_register_ldisc(int disc, struct tty_ldisc *new_ldisc)
-{
- unsigned long flags;
- int ret = 0;
-
- if (disc < N_TTY || disc >= NR_LDISCS)
- return -EINVAL;
-
- spin_lock_irqsave(&tty_ldisc_lock, flags);
- if (new_ldisc) {
- tty_ldiscs[disc] = *new_ldisc;
- tty_ldiscs[disc].num = disc;
- tty_ldiscs[disc].flags |= LDISC_FLAG_DEFINED;
- tty_ldiscs[disc].refcount = 0;
- } else {
- if(tty_ldiscs[disc].refcount)
- ret = -EBUSY;
- else
- tty_ldiscs[disc].flags &= ~LDISC_FLAG_DEFINED;
- }
- spin_unlock_irqrestore(&tty_ldisc_lock, flags);
-
- return ret;
-}
-
-EXPORT_SYMBOL(tty_register_ldisc);
-
-struct tty_ldisc *tty_ldisc_get(int disc)
-{
- unsigned long flags;
- struct tty_ldisc *ld;
-
- if (disc < N_TTY || disc >= NR_LDISCS)
- return NULL;
-
- spin_lock_irqsave(&tty_ldisc_lock, flags);
-
- ld = &tty_ldiscs[disc];
- /* Check the entry is defined */
- if(ld->flags & LDISC_FLAG_DEFINED)
- {
- /* If the module is being unloaded we can't use it */
- if (!try_module_get(ld->owner))
- ld = NULL;
- else /* lock it */
- ld->refcount++;
- }
- else
- ld = NULL;
- spin_unlock_irqrestore(&tty_ldisc_lock, flags);
- return ld;
-}
-
-EXPORT_SYMBOL_GPL(tty_ldisc_get);
-
-void tty_ldisc_put(int disc)
-{
- struct tty_ldisc *ld;
- unsigned long flags;
-
- if (disc < N_TTY || disc >= NR_LDISCS)
- BUG();
-
- spin_lock_irqsave(&tty_ldisc_lock, flags);
- ld = &tty_ldiscs[disc];
- if(ld->refcount == 0)
- BUG();
- ld->refcount --;
- module_put(ld->owner);
- spin_unlock_irqrestore(&tty_ldisc_lock, flags);
-}
-
-EXPORT_SYMBOL_GPL(tty_ldisc_put);
-
-static void tty_ldisc_assign(struct tty_struct *tty, struct tty_ldisc *ld)
-{
- tty->ldisc = *ld;
- tty->ldisc.refcount = 0;
-}
-
-/**
- * tty_ldisc_try - internal helper
- * @tty: the tty
- *
- * Make a single attempt to grab and bump the refcount on
- * the tty ldisc. Return 0 on failure or 1 on success. This is
- * used to implement both the waiting and non waiting versions
- * of tty_ldisc_ref
- */
-
-static int tty_ldisc_try(struct tty_struct *tty)
-{
- unsigned long flags;
- struct tty_ldisc *ld;
- int ret = 0;
-
- spin_lock_irqsave(&tty_ldisc_lock, flags);
- ld = &tty->ldisc;
- if(test_bit(TTY_LDISC, &tty->flags))
- {
- ld->refcount++;
- ret = 1;
- }
- spin_unlock_irqrestore(&tty_ldisc_lock, flags);
- return ret;
-}
-
-/**
- * tty_ldisc_ref_wait - wait for the tty ldisc
- * @tty: tty device
- *
- * Dereference the line discipline for the terminal and take a
- * reference to it. If the line discipline is in flux then
- * wait patiently until it changes.
- *
- * Note: Must not be called from an IRQ/timer context. The caller
- * must also be careful not to hold other locks that will deadlock
- * against a discipline change, such as an existing ldisc reference
- * (which we check for)
- */
-
-struct tty_ldisc *tty_ldisc_ref_wait(struct tty_struct *tty)
-{
- /* wait_event is a macro */
- wait_event(tty_ldisc_wait, tty_ldisc_try(tty));
- if(tty->ldisc.refcount == 0)
- printk(KERN_ERR "tty_ldisc_ref_wait\n");
- return &tty->ldisc;
-}
-
-EXPORT_SYMBOL_GPL(tty_ldisc_ref_wait);
-
-/**
- * tty_ldisc_ref - get the tty ldisc
- * @tty: tty device
- *
- * Dereference the line discipline for the terminal and take a
- * reference to it. If the line discipline is in flux then
- * return NULL. Can be called from IRQ and timer functions.
- */
-
-struct tty_ldisc *tty_ldisc_ref(struct tty_struct *tty)
-{
- if(tty_ldisc_try(tty))
- return &tty->ldisc;
- return NULL;
-}
-
-EXPORT_SYMBOL_GPL(tty_ldisc_ref);
-
-/**
- * tty_ldisc_deref - free a tty ldisc reference
- * @ld: reference to free up
- *
- * Undoes the effect of tty_ldisc_ref or tty_ldisc_ref_wait. May
- * be called in IRQ context.
- */
-
-void tty_ldisc_deref(struct tty_ldisc *ld)
-{
- unsigned long flags;
-
- if(ld == NULL)
- BUG();
-
- spin_lock_irqsave(&tty_ldisc_lock, flags);
- if(ld->refcount == 0)
- printk(KERN_ERR "tty_ldisc_deref: no references.\n");
- else
- ld->refcount--;
- if(ld->refcount == 0)
- wake_up(&tty_ldisc_wait);
- spin_unlock_irqrestore(&tty_ldisc_lock, flags);
-}
-
-EXPORT_SYMBOL_GPL(tty_ldisc_deref);
-
-/**
- * tty_ldisc_enable - allow ldisc use
- * @tty: terminal to activate ldisc on
- *
- * Set the TTY_LDISC flag when the line discipline can be called
- * again. Do neccessary wakeups for existing sleepers.
- *
- * Note: nobody should set this bit except via this function. Clearing
- * directly is allowed.
- */
-
-static void tty_ldisc_enable(struct tty_struct *tty)
-{
- set_bit(TTY_LDISC, &tty->flags);
- wake_up(&tty_ldisc_wait);
-}
-
-/**
- * tty_set_ldisc - set line discipline
- * @tty: the terminal to set
- * @ldisc: the line discipline
- *
- * Set the discipline of a tty line. Must be called from a process
- * context.
- */
-
-static int tty_set_ldisc(struct tty_struct *tty, int ldisc)
-{
- int retval = 0;
- struct tty_ldisc o_ldisc;
- char buf[64];
- int work;
- unsigned long flags;
- struct tty_ldisc *ld;
-
- if ((ldisc < N_TTY) || (ldisc >= NR_LDISCS))
- return -EINVAL;
-
-restart:
-
- if (tty->ldisc.num == ldisc)
- return 0; /* We are already in the desired discipline */
-
- ld = tty_ldisc_get(ldisc);
- /* Eduardo Blanco <ejbs@xxxxxxxxxxxx> */
- /* Cyrus Durgin <cider@xxxxxxxxxxxxx> */
- if (ld == NULL) {
- request_module("tty-ldisc-%d", ldisc);
- ld = tty_ldisc_get(ldisc);
- }
- if (ld == NULL)
- return -EINVAL;
-
- o_ldisc = tty->ldisc;
-
- tty_wait_until_sent(tty, 0);
-
- /*
- * Make sure we don't change while someone holds a
- * reference to the line discipline. The TTY_LDISC bit
- * prevents anyone taking a reference once it is clear.
- * We need the lock to avoid racing reference takers.
- */
-
- spin_lock_irqsave(&tty_ldisc_lock, flags);
- if(tty->ldisc.refcount)
- {
- /* Free the new ldisc we grabbed. Must drop the lock
- first. */
- spin_unlock_irqrestore(&tty_ldisc_lock, flags);
- tty_ldisc_put(ldisc);
- /*
- * There are several reasons we may be busy, including
- * random momentary I/O traffic. We must therefore
- * retry. We could distinguish between blocking ops
- * and retries if we made tty_ldisc_wait() smarter. That
- * is up for discussion.
- */
- if(wait_event_interruptible(tty_ldisc_wait, tty->ldisc.refcount
== 0) < 0)
- return -ERESTARTSYS;
- goto restart;
- }
- clear_bit(TTY_LDISC, &tty->flags);
- clear_bit(TTY_DONT_FLIP, &tty->flags);
- spin_unlock_irqrestore(&tty_ldisc_lock, flags);
-
- /*
- * From this point on we know nobody has an ldisc
- * usage reference, nor can they obtain one until
- * we say so later on.
- */
-
- work = cancel_delayed_work(&tty->flip.work);
- /*
- * Wait for ->hangup_work and ->flip.work handlers to terminate
- */
-
- flush_scheduled_work();
- /* Shutdown the current discipline. */
- if (tty->ldisc.close)
- (tty->ldisc.close)(tty);
-
- /* Now set up the new line discipline. */
- tty_ldisc_assign(tty, ld);
- tty_set_termios_ldisc(tty, ldisc);
- if (tty->ldisc.open)
- retval = (tty->ldisc.open)(tty);
- if (retval < 0) {
- tty_ldisc_put(ldisc);
- /* There is an outstanding reference here so this is safe */
- tty_ldisc_assign(tty, tty_ldisc_get(o_ldisc.num));
- tty_set_termios_ldisc(tty, tty->ldisc.num);
- if (tty->ldisc.open && (tty->ldisc.open(tty) < 0)) {
- tty_ldisc_put(o_ldisc.num);
- /* This driver is always present */
- tty_ldisc_assign(tty, tty_ldisc_get(N_TTY));
- tty_set_termios_ldisc(tty, N_TTY);
- if (tty->ldisc.open) {
- int r = tty->ldisc.open(tty);
-
- if (r < 0)
- panic("Couldn't open N_TTY ldisc for "
- "%s --- error %d.",
- tty_name(tty, buf), r);
- }
- }
- }
- /* At this point we hold a reference to the new ldisc and a
- a reference to the old ldisc. If we ended up flipping back
- to the existing ldisc we have two references to it */
-
- if (tty->ldisc.num != o_ldisc.num && tty->driver->set_ldisc)
- tty->driver->set_ldisc(tty);
-
- tty_ldisc_put(o_ldisc.num);
-
- /*
- * Allow ldisc referencing to occur as soon as the driver
- * ldisc callback completes.
- */
-
- tty_ldisc_enable(tty);
-
- /* Restart it in case no characters kick it off. Safe if
- already running */
- if(work)
- schedule_delayed_work(&tty->flip.work, 1);
- return retval;
-}
-
-/*
- * This routine returns a tty driver structure, given a device number
- */
-static struct tty_driver *get_tty_driver(dev_t device, int *index)
-{
- struct tty_driver *p;
-
- list_for_each_entry(p, &tty_drivers, tty_drivers) {
- dev_t base = MKDEV(p->major, p->minor_start);
- if (device < base || device >= base + p->num)
- continue;
- *index = device - base;
- return p;
- }
- return NULL;
-}
-
-/*
- * If we try to write to, or set the state of, a terminal and we're
- * not in the foreground, send a SIGTTOU. If the signal is blocked or
- * ignored, go ahead and perform the operation. (POSIX 7.2)
- */
-int tty_check_change(struct tty_struct * tty)
-{
- if (current->signal->tty != tty)
- return 0;
- if (tty->pgrp <= 0) {
- printk(KERN_WARNING "tty_check_change: tty->pgrp <= 0!\n");
- return 0;
- }
- if (process_group(current) == tty->pgrp)
- return 0;
- if (is_ignored(SIGTTOU))
- return 0;
- if (is_orphaned_pgrp(process_group(current)))
- return -EIO;
- (void) kill_pg(process_group(current), SIGTTOU, 1);
- return -ERESTARTSYS;
-}
-
-EXPORT_SYMBOL(tty_check_change);
-
-static ssize_t hung_up_tty_read(struct file * file, char __user * buf,
- size_t count, loff_t *ppos)
-{
- return 0;
-}
-
-static ssize_t hung_up_tty_write(struct file * file, const char __user * buf,
- size_t count, loff_t *ppos)
-{
- return -EIO;
-}
-
-/* No kernel lock held - none needed ;) */
-static unsigned int hung_up_tty_poll(struct file * filp, poll_table * wait)
-{
- return POLLIN | POLLOUT | POLLERR | POLLHUP | POLLRDNORM | POLLWRNORM;
-}
-
-static int hung_up_tty_ioctl(struct inode * inode, struct file * file,
- unsigned int cmd, unsigned long arg)
-{
- return cmd == TIOCSPGRP ? -ENOTTY : -EIO;
-}
-
-static struct file_operations tty_fops = {
- .llseek = no_llseek,
- .read = tty_read,
- .write = tty_write,
- .poll = tty_poll,
- .ioctl = tty_ioctl,
- .open = tty_open,
- .release = tty_release,
- .fasync = tty_fasync,
-};
-
-#ifdef CONFIG_UNIX98_PTYS
-static struct file_operations ptmx_fops = {
- .llseek = no_llseek,
- .read = tty_read,
- .write = tty_write,
- .poll = tty_poll,
- .ioctl = tty_ioctl,
- .open = ptmx_open,
- .release = tty_release,
- .fasync = tty_fasync,
-};
-#endif
-
-static struct file_operations console_fops = {
- .llseek = no_llseek,
- .read = tty_read,
- .write = redirected_tty_write,
- .poll = tty_poll,
- .ioctl = tty_ioctl,
- .open = tty_open,
- .release = tty_release,
- .fasync = tty_fasync,
-};
-
-static struct file_operations hung_up_tty_fops = {
- .llseek = no_llseek,
- .read = hung_up_tty_read,
- .write = hung_up_tty_write,
- .poll = hung_up_tty_poll,
- .ioctl = hung_up_tty_ioctl,
- .release = tty_release,
-};
-
-static DEFINE_SPINLOCK(redirect_lock);
-static struct file *redirect;
-
-/**
- * tty_wakeup - request more data
- * @tty: terminal
- *
- * Internal and external helper for wakeups of tty. This function
- * informs the line discipline if present that the driver is ready
- * to receive more output data.
- */
-
-void tty_wakeup(struct tty_struct *tty)
-{
- struct tty_ldisc *ld;
-
- if (test_bit(TTY_DO_WRITE_WAKEUP, &tty->flags)) {
- ld = tty_ldisc_ref(tty);
- if(ld) {
- if(ld->write_wakeup)
- ld->write_wakeup(tty);
- tty_ldisc_deref(ld);
- }
- }
- wake_up_interruptible(&tty->write_wait);
-}
-
-EXPORT_SYMBOL_GPL(tty_wakeup);
-
-/**
- * tty_ldisc_flush - flush line discipline queue
- * @tty: tty
- *
- * Flush the line discipline queue (if any) for this tty. If there
- * is no line discipline active this is a no-op.
- */
-
-void tty_ldisc_flush(struct tty_struct *tty)
-{
- struct tty_ldisc *ld = tty_ldisc_ref(tty);
- if(ld) {
- if(ld->flush_buffer)
- ld->flush_buffer(tty);
- tty_ldisc_deref(ld);
- }
-}
-
-EXPORT_SYMBOL_GPL(tty_ldisc_flush);
-
-/*
- * This can be called by the "eventd" kernel thread. That is process
synchronous,
- * but doesn't hold any locks, so we need to make sure we have the appropriate
- * locks for what we're doing..
- */
-static void do_tty_hangup(void *data)
-{
- struct tty_struct *tty = (struct tty_struct *) data;
- struct file * cons_filp = NULL;
- struct file *filp, *f = NULL;
- struct task_struct *p;
- struct tty_ldisc *ld;
- int closecount = 0, n;
-
- if (!tty)
- return;
-
- /* inuse_filps is protected by the single kernel lock */
- lock_kernel();
-
- spin_lock(&redirect_lock);
- if (redirect && redirect->private_data == tty) {
- f = redirect;
- redirect = NULL;
- }
- spin_unlock(&redirect_lock);
-
- check_tty_count(tty, "do_tty_hangup");
- file_list_lock();
- /* This breaks for file handles being sent over AF_UNIX sockets ? */
- list_for_each_entry(filp, &tty->tty_files, f_list) {
- if (filp->f_op->write == redirected_tty_write)
- cons_filp = filp;
- if (filp->f_op->write != tty_write)
- continue;
- closecount++;
- tty_fasync(-1, filp, 0); /* can't block */
- filp->f_op = &hung_up_tty_fops;
- }
- file_list_unlock();
-
- /* FIXME! What are the locking issues here? This may me overdoing
things..
- * this question is especially important now that we've removed the
irqlock. */
-
- ld = tty_ldisc_ref(tty);
- if(ld != NULL) /* We may have no line discipline at this point */
- {
- if (ld->flush_buffer)
- ld->flush_buffer(tty);
- if (tty->driver->flush_buffer)
- tty->driver->flush_buffer(tty);
- if ((test_bit(TTY_DO_WRITE_WAKEUP, &tty->flags)) &&
- ld->write_wakeup)
- ld->write_wakeup(tty);
- if (ld->hangup)
- ld->hangup(tty);
- }
-
- /* FIXME: Once we trust the LDISC code better we can wait here for
- ldisc completion and fix the driver call race */
-
- wake_up_interruptible(&tty->write_wait);
- wake_up_interruptible(&tty->read_wait);
-
- /*
- * Shutdown the current line discipline, and reset it to
- * N_TTY.
- */
- if (tty->driver->flags & TTY_DRIVER_RESET_TERMIOS)
- {
- down(&tty->termios_sem);
- *tty->termios = tty->driver->init_termios;
- up(&tty->termios_sem);
- }
-
- /* Defer ldisc switch */
- /* tty_deferred_ldisc_switch(N_TTY);
-
- This should get done automatically when the port closes and
- tty_release is called */
-
- read_lock(&tasklist_lock);
- if (tty->session > 0) {
- do_each_task_pid(tty->session, PIDTYPE_SID, p) {
- if (p->signal->tty == tty)
- p->signal->tty = NULL;
- if (!p->signal->leader)
- continue;
- send_group_sig_info(SIGHUP, SEND_SIG_PRIV, p);
- send_group_sig_info(SIGCONT, SEND_SIG_PRIV, p);
- if (tty->pgrp > 0)
- p->signal->tty_old_pgrp = tty->pgrp;
- } while_each_task_pid(tty->session, PIDTYPE_SID, p);
- }
- read_unlock(&tasklist_lock);
-
- tty->flags = 0;
- tty->session = 0;
- tty->pgrp = -1;
- tty->ctrl_status = 0;
- /*
- * If one of the devices matches a console pointer, we
- * cannot just call hangup() because that will cause
- * tty->count and state->count to go out of sync.
- * So we just call close() the right number of times.
- */
- if (cons_filp) {
- if (tty->driver->close)
- for (n = 0; n < closecount; n++)
- tty->driver->close(tty, cons_filp);
- } else if (tty->driver->hangup)
- (tty->driver->hangup)(tty);
-
- /* We don't want to have driver/ldisc interactions beyond
- the ones we did here. The driver layer expects no
- calls after ->hangup() from the ldisc side. However we
- can't yet guarantee all that */
-
- set_bit(TTY_HUPPED, &tty->flags);
- if (ld) {
- tty_ldisc_enable(tty);
- tty_ldisc_deref(ld);
- }
- unlock_kernel();
- if (f)
- fput(f);
-}
-
-void tty_hangup(struct tty_struct * tty)
-{
-#ifdef TTY_DEBUG_HANGUP
- char buf[64];
-
- printk(KERN_DEBUG "%s hangup...\n", tty_name(tty, buf));
-#endif
- schedule_work(&tty->hangup_work);
-}
-
-EXPORT_SYMBOL(tty_hangup);
-
-void tty_vhangup(struct tty_struct * tty)
-{
-#ifdef TTY_DEBUG_HANGUP
- char buf[64];
-
- printk(KERN_DEBUG "%s vhangup...\n", tty_name(tty, buf));
-#endif
- do_tty_hangup((void *) tty);
-}
-EXPORT_SYMBOL(tty_vhangup);
-
-int tty_hung_up_p(struct file * filp)
-{
- return (filp->f_op == &hung_up_tty_fops);
-}
-
-EXPORT_SYMBOL(tty_hung_up_p);
-
-/*
- * This function is typically called only by the session leader, when
- * it wants to disassociate itself from its controlling tty.
- *
- * It performs the following functions:
- * (1) Sends a SIGHUP and SIGCONT to the foreground process group
- * (2) Clears the tty from being controlling the session
- * (3) Clears the controlling tty for all processes in the
- * session group.
- *
- * The argument on_exit is set to 1 if called when a process is
- * exiting; it is 0 if called by the ioctl TIOCNOTTY.
- */
-void disassociate_ctty(int on_exit)
-{
- struct tty_struct *tty;
- struct task_struct *p;
- int tty_pgrp = -1;
-
- lock_kernel();
-
- down(&tty_sem);
- tty = current->signal->tty;
- if (tty) {
- tty_pgrp = tty->pgrp;
- up(&tty_sem);
- if (on_exit && tty->driver->type != TTY_DRIVER_TYPE_PTY)
- tty_vhangup(tty);
- } else {
- if (current->signal->tty_old_pgrp) {
- kill_pg(current->signal->tty_old_pgrp, SIGHUP, on_exit);
- kill_pg(current->signal->tty_old_pgrp, SIGCONT,
on_exit);
- }
- up(&tty_sem);
- unlock_kernel();
- return;
- }
- if (tty_pgrp > 0) {
- kill_pg(tty_pgrp, SIGHUP, on_exit);
- if (!on_exit)
- kill_pg(tty_pgrp, SIGCONT, on_exit);
- }
-
- /* Must lock changes to tty_old_pgrp */
- down(&tty_sem);
- current->signal->tty_old_pgrp = 0;
- tty->session = 0;
- tty->pgrp = -1;
-
- /* Now clear signal->tty under the lock */
- read_lock(&tasklist_lock);
- do_each_task_pid(current->signal->session, PIDTYPE_SID, p) {
- p->signal->tty = NULL;
- } while_each_task_pid(current->signal->session, PIDTYPE_SID, p);
- read_unlock(&tasklist_lock);
- up(&tty_sem);
- unlock_kernel();
-}
-
-void stop_tty(struct tty_struct *tty)
-{
- if (tty->stopped)
- return;
- tty->stopped = 1;
- if (tty->link && tty->link->packet) {
- tty->ctrl_status &= ~TIOCPKT_START;
- tty->ctrl_status |= TIOCPKT_STOP;
- wake_up_interruptible(&tty->link->read_wait);
- }
- if (tty->driver->stop)
- (tty->driver->stop)(tty);
-}
-
-EXPORT_SYMBOL(stop_tty);
-
-void start_tty(struct tty_struct *tty)
-{
- if (!tty->stopped || tty->flow_stopped)
- return;
- tty->stopped = 0;
- if (tty->link && tty->link->packet) {
- tty->ctrl_status &= ~TIOCPKT_STOP;
- tty->ctrl_status |= TIOCPKT_START;
- wake_up_interruptible(&tty->link->read_wait);
- }
- if (tty->driver->start)
- (tty->driver->start)(tty);
-
- /* If we have a running line discipline it may need kicking */
- tty_wakeup(tty);
- wake_up_interruptible(&tty->write_wait);
-}
-
-EXPORT_SYMBOL(start_tty);
-
-static ssize_t tty_read(struct file * file, char __user * buf, size_t count,
- loff_t *ppos)
-{
- int i;
- struct tty_struct * tty;
- struct inode *inode;
- struct tty_ldisc *ld;
-
- tty = (struct tty_struct *)file->private_data;
- inode = file->f_dentry->d_inode;
- if (tty_paranoia_check(tty, inode, "tty_read"))
- return -EIO;
- if (!tty || (test_bit(TTY_IO_ERROR, &tty->flags)))
- return -EIO;
-
- /* We want to wait for the line discipline to sort out in this
- situation */
- ld = tty_ldisc_ref_wait(tty);
- lock_kernel();
- if (ld->read)
- i = (ld->read)(tty,file,buf,count);
- else
- i = -EIO;
- tty_ldisc_deref(ld);
- unlock_kernel();
- if (i > 0)
- inode->i_atime = current_fs_time(inode->i_sb);
- return i;
-}
-
-/*
- * Split writes up in sane blocksizes to avoid
- * denial-of-service type attacks
- */
-static inline ssize_t do_tty_write(
- ssize_t (*write)(struct tty_struct *, struct file *, const unsigned
char *, size_t),
- struct tty_struct *tty,
- struct file *file,
- const char __user *buf,
- size_t count)
-{
- ssize_t ret = 0, written = 0;
- unsigned int chunk;
-
- if (down_interruptible(&tty->atomic_write)) {
- return -ERESTARTSYS;
- }
-
- /*
- * We chunk up writes into a temporary buffer. This
- * simplifies low-level drivers immensely, since they
- * don't have locking issues and user mode accesses.
- *
- * But if TTY_NO_WRITE_SPLIT is set, we should use a
- * big chunk-size..
- *
- * The default chunk-size is 2kB, because the NTTY
- * layer has problems with bigger chunks. It will
- * claim to be able to handle more characters than
- * it actually does.
- */
- chunk = 2048;
- if (test_bit(TTY_NO_WRITE_SPLIT, &tty->flags))
- chunk = 65536;
- if (count < chunk)
- chunk = count;
-
- /* write_buf/write_cnt is protected by the atomic_write semaphore */
- if (tty->write_cnt < chunk) {
- unsigned char *buf;
-
- if (chunk < 1024)
- chunk = 1024;
-
- buf = kmalloc(chunk, GFP_KERNEL);
- if (!buf) {
- up(&tty->atomic_write);
- return -ENOMEM;
- }
- kfree(tty->write_buf);
- tty->write_cnt = chunk;
- tty->write_buf = buf;
- }
-
- /* Do the write .. */
- for (;;) {
- size_t size = count;
- if (size > chunk)
- size = chunk;
- ret = -EFAULT;
- if (copy_from_user(tty->write_buf, buf, size))
- break;
- lock_kernel();
- ret = write(tty, file, tty->write_buf, size);
- unlock_kernel();
- if (ret <= 0)
- break;
- written += ret;
- buf += ret;
- count -= ret;
- if (!count)
- break;
- ret = -ERESTARTSYS;
- if (signal_pending(current))
- break;
- cond_resched();
- }
- if (written) {
- struct inode *inode = file->f_dentry->d_inode;
- inode->i_mtime = current_fs_time(inode->i_sb);
- ret = written;
- }
- up(&tty->atomic_write);
- return ret;
-}
-
-
-static ssize_t tty_write(struct file * file, const char __user * buf, size_t
count,
- loff_t *ppos)
-{
- struct tty_struct * tty;
- struct inode *inode = file->f_dentry->d_inode;
- ssize_t ret;
- struct tty_ldisc *ld;
-
- tty = (struct tty_struct *)file->private_data;
- if (tty_paranoia_check(tty, inode, "tty_write"))
- return -EIO;
- if (!tty || !tty->driver->write || (test_bit(TTY_IO_ERROR,
&tty->flags)))
- return -EIO;
-
- ld = tty_ldisc_ref_wait(tty);
- if (!ld->write)
- ret = -EIO;
- else
- ret = do_tty_write(ld->write, tty, file, buf, count);
- tty_ldisc_deref(ld);
- return ret;
-}
-
-ssize_t redirected_tty_write(struct file * file, const char __user * buf,
size_t count,
- loff_t *ppos)
-{
- struct file *p = NULL;
-
- spin_lock(&redirect_lock);
- if (redirect) {
- get_file(redirect);
- p = redirect;
- }
- spin_unlock(&redirect_lock);
-
- if (p) {
- ssize_t res;
- res = vfs_write(p, buf, count, &p->f_pos);
- fput(p);
- return res;
- }
-
- return tty_write(file, buf, count, ppos);
-}
-
-static char ptychar[] = "pqrstuvwxyzabcde";
-
-static inline void pty_line_name(struct tty_driver *driver, int index, char *p)
-{
- int i = index + driver->name_base;
- /* ->name is initialized to "ttyp", but "tty" is expected */
- sprintf(p, "%s%c%x",
- driver->subtype == PTY_TYPE_SLAVE ? "tty" :
driver->name,
- ptychar[i >> 4 & 0xf], i & 0xf);
-}
-
-static inline void tty_line_name(struct tty_driver *driver, int index, char *p)
-{
- sprintf(p, "%s%d", driver->name, index + driver->name_base);
-}
-
-/*
- * WSH 06/09/97: Rewritten to remove races and properly clean up after a
- * failed open. The new code protects the open with a semaphore, so it's
- * really quite straightforward. The semaphore locking can probably be
- * relaxed for the (most common) case of reopening a tty.
- */
-static int init_dev(struct tty_driver *driver, int idx,
- struct tty_struct **ret_tty)
-{
- struct tty_struct *tty, *o_tty;
- struct termios *tp, **tp_loc, *o_tp, **o_tp_loc;
- struct termios *ltp, **ltp_loc, *o_ltp, **o_ltp_loc;
- int retval=0;
-
- /* check whether we're reopening an existing tty */
- if (driver->flags & TTY_DRIVER_DEVPTS_MEM) {
- tty = devpts_get_tty(idx);
- if (tty && driver->subtype == PTY_TYPE_MASTER)
- tty = tty->link;
- } else {
- tty = driver->ttys[idx];
- }
- if (tty) goto fast_track;
-
- /*
- * First time open is complex, especially for PTY devices.
- * This code guarantees that either everything succeeds and the
- * TTY is ready for operation, or else the table slots are vacated
- * and the allocated memory released. (Except that the termios
- * and locked termios may be retained.)
- */
-
- if (!try_module_get(driver->owner)) {
- retval = -ENODEV;
- goto end_init;
- }
-
- o_tty = NULL;
- tp = o_tp = NULL;
- ltp = o_ltp = NULL;
-
- tty = alloc_tty_struct();
- if(!tty)
- goto fail_no_mem;
- initialize_tty_struct(tty);
- tty->driver = driver;
- tty->index = idx;
- tty_line_name(driver, idx, tty->name);
-
- if (driver->flags & TTY_DRIVER_DEVPTS_MEM) {
- tp_loc = &tty->termios;
- ltp_loc = &tty->termios_locked;
- } else {
- tp_loc = &driver->termios[idx];
- ltp_loc = &driver->termios_locked[idx];
- }
-
- if (!*tp_loc) {
- tp = (struct termios *) kmalloc(sizeof(struct termios),
- GFP_KERNEL);
- if (!tp)
- goto free_mem_out;
- *tp = driver->init_termios;
- }
-
- if (!*ltp_loc) {
- ltp = (struct termios *) kmalloc(sizeof(struct termios),
- GFP_KERNEL);
- if (!ltp)
- goto free_mem_out;
- memset(ltp, 0, sizeof(struct termios));
- }
-
- if (driver->type == TTY_DRIVER_TYPE_PTY) {
- o_tty = alloc_tty_struct();
- if (!o_tty)
- goto free_mem_out;
- initialize_tty_struct(o_tty);
- o_tty->driver = driver->other;
- o_tty->index = idx;
- tty_line_name(driver->other, idx, o_tty->name);
-
- if (driver->flags & TTY_DRIVER_DEVPTS_MEM) {
- o_tp_loc = &o_tty->termios;
- o_ltp_loc = &o_tty->termios_locked;
- } else {
- o_tp_loc = &driver->other->termios[idx];
- o_ltp_loc = &driver->other->termios_locked[idx];
- }
-
- if (!*o_tp_loc) {
- o_tp = (struct termios *)
- kmalloc(sizeof(struct termios), GFP_KERNEL);
- if (!o_tp)
- goto free_mem_out;
- *o_tp = driver->other->init_termios;
- }
-
- if (!*o_ltp_loc) {
- o_ltp = (struct termios *)
- kmalloc(sizeof(struct termios), GFP_KERNEL);
- if (!o_ltp)
- goto free_mem_out;
- memset(o_ltp, 0, sizeof(struct termios));
- }
-
- /*
- * Everything allocated ... set up the o_tty structure.
- */
- if (!(driver->other->flags & TTY_DRIVER_DEVPTS_MEM)) {
- driver->other->ttys[idx] = o_tty;
- }
- if (!*o_tp_loc)
- *o_tp_loc = o_tp;
- if (!*o_ltp_loc)
- *o_ltp_loc = o_ltp;
- o_tty->termios = *o_tp_loc;
- o_tty->termios_locked = *o_ltp_loc;
- driver->other->refcount++;
- if (driver->subtype == PTY_TYPE_MASTER)
- o_tty->count++;
-
- /* Establish the links in both directions */
- tty->link = o_tty;
- o_tty->link = tty;
- }
-
- /*
- * All structures have been allocated, so now we install them.
- * Failures after this point use release_mem to clean up, so
- * there's no need to null out the local pointers.
- */
- if (!(driver->flags & TTY_DRIVER_DEVPTS_MEM)) {
- driver->ttys[idx] = tty;
- }
-
- if (!*tp_loc)
- *tp_loc = tp;
- if (!*ltp_loc)
- *ltp_loc = ltp;
- tty->termios = *tp_loc;
- tty->termios_locked = *ltp_loc;
- driver->refcount++;
- tty->count++;
-
- /*
- * Structures all installed ... call the ldisc open routines.
- * If we fail here just call release_mem to clean up. No need
- * to decrement the use counts, as release_mem doesn't care.
- */
-
- if (tty->ldisc.open) {
- retval = (tty->ldisc.open)(tty);
- if (retval)
- goto release_mem_out;
- }
- if (o_tty && o_tty->ldisc.open) {
- retval = (o_tty->ldisc.open)(o_tty);
- if (retval) {
- if (tty->ldisc.close)
- (tty->ldisc.close)(tty);
- goto release_mem_out;
- }
- tty_ldisc_enable(o_tty);
- }
- tty_ldisc_enable(tty);
- goto success;
-
- /*
- * This fast open can be used if the tty is already open.
- * No memory is allocated, and the only failures are from
- * attempting to open a closing tty or attempting multiple
- * opens on a pty master.
- */
-fast_track:
- if (test_bit(TTY_CLOSING, &tty->flags)) {
- retval = -EIO;
- goto end_init;
- }
- if (driver->type == TTY_DRIVER_TYPE_PTY &&
- driver->subtype == PTY_TYPE_MASTER) {
- /*
- * special case for PTY masters: only one open permitted,
- * and the slave side open count is incremented as well.
- */
- if (tty->count) {
- retval = -EIO;
- goto end_init;
- }
- tty->link->count++;
- }
- tty->count++;
- tty->driver = driver; /* N.B. why do this every time?? */
-
- /* FIXME */
- if(!test_bit(TTY_LDISC, &tty->flags))
- printk(KERN_ERR "init_dev but no ldisc\n");
-success:
- *ret_tty = tty;
-
- /* All paths come through here to release the semaphore */
-end_init:
- return retval;
-
- /* Release locally allocated memory ... nothing placed in slots */
-free_mem_out:
- if (o_tp)
- kfree(o_tp);
- if (o_tty)
- free_tty_struct(o_tty);
- if (ltp)
- kfree(ltp);
- if (tp)
- kfree(tp);
- free_tty_struct(tty);
-
-fail_no_mem:
- module_put(driver->owner);
- retval = -ENOMEM;
- goto end_init;
-
- /* call the tty release_mem routine to clean out this slot */
-release_mem_out:
- printk(KERN_INFO "init_dev: ldisc open failed, "
- "clearing slot %d\n", idx);
- release_mem(tty, idx);
- goto end_init;
-}
-
-/*
- * Releases memory associated with a tty structure, and clears out the
- * driver table slots.
- */
-static void release_mem(struct tty_struct *tty, int idx)
-{
- struct tty_struct *o_tty;
- struct termios *tp;
- int devpts = tty->driver->flags & TTY_DRIVER_DEVPTS_MEM;
-
- if ((o_tty = tty->link) != NULL) {
- if (!devpts)
- o_tty->driver->ttys[idx] = NULL;
- if (o_tty->driver->flags & TTY_DRIVER_RESET_TERMIOS) {
- tp = o_tty->termios;
- if (!devpts)
- o_tty->driver->termios[idx] = NULL;
- kfree(tp);
-
- tp = o_tty->termios_locked;
- if (!devpts)
- o_tty->driver->termios_locked[idx] = NULL;
- kfree(tp);
- }
- o_tty->magic = 0;
- o_tty->driver->refcount--;
- file_list_lock();
- list_del_init(&o_tty->tty_files);
- file_list_unlock();
- free_tty_struct(o_tty);
- }
-
- if (!devpts)
- tty->driver->ttys[idx] = NULL;
- if (tty->driver->flags & TTY_DRIVER_RESET_TERMIOS) {
- tp = tty->termios;
- if (!devpts)
- tty->driver->termios[idx] = NULL;
- kfree(tp);
-
- tp = tty->termios_locked;
- if (!devpts)
- tty->driver->termios_locked[idx] = NULL;
- kfree(tp);
- }
-
- tty->magic = 0;
- tty->driver->refcount--;
- file_list_lock();
- list_del_init(&tty->tty_files);
- file_list_unlock();
- module_put(tty->driver->owner);
- free_tty_struct(tty);
-}
-
-/*
- * Even releasing the tty structures is a tricky business.. We have
- * to be very careful that the structures are all released at the
- * same time, as interrupts might otherwise get the wrong pointers.
- *
- * WSH 09/09/97: rewritten to avoid some nasty race conditions that could
- * lead to double frees or releasing memory still in use.
- */
-static void release_dev(struct file * filp)
-{
- struct tty_struct *tty, *o_tty;
- int pty_master, tty_closing, o_tty_closing, do_sleep;
- int devpts_master, devpts;
- int idx;
- char buf[64];
- unsigned long flags;
-
- tty = (struct tty_struct *)filp->private_data;
- if (tty_paranoia_check(tty, filp->f_dentry->d_inode, "release_dev"))
- return;
-
- check_tty_count(tty, "release_dev");
-
- tty_fasync(-1, filp, 0);
-
- idx = tty->index;
- pty_master = (tty->driver->type == TTY_DRIVER_TYPE_PTY &&
- tty->driver->subtype == PTY_TYPE_MASTER);
- devpts = (tty->driver->flags & TTY_DRIVER_DEVPTS_MEM) != 0;
- devpts_master = pty_master && devpts;
- o_tty = tty->link;
-
-#ifdef TTY_PARANOIA_CHECK
- if (idx < 0 || idx >= tty->driver->num) {
- printk(KERN_DEBUG "release_dev: bad idx when trying to "
- "free (%s)\n", tty->name);
- return;
- }
- if (!(tty->driver->flags & TTY_DRIVER_DEVPTS_MEM)) {
- if (tty != tty->driver->ttys[idx]) {
- printk(KERN_DEBUG "release_dev: driver.table[%d] not
tty "
- "for (%s)\n", idx, tty->name);
- return;
- }
- if (tty->termios != tty->driver->termios[idx]) {
- printk(KERN_DEBUG "release_dev: driver.termios[%d] not
termios "
- "for (%s)\n",
- idx, tty->name);
- return;
- }
- if (tty->termios_locked != tty->driver->termios_locked[idx]) {
- printk(KERN_DEBUG "release_dev:
driver.termios_locked[%d] not "
- "termios_locked for (%s)\n",
- idx, tty->name);
- return;
- }
- }
-#endif
-
-#ifdef TTY_DEBUG_HANGUP
- printk(KERN_DEBUG "release_dev of %s (tty count=%d)...",
- tty_name(tty, buf), tty->count);
-#endif
-
-#ifdef TTY_PARANOIA_CHECK
- if (tty->driver->other &&
- !(tty->driver->flags & TTY_DRIVER_DEVPTS_MEM)) {
- if (o_tty != tty->driver->other->ttys[idx]) {
- printk(KERN_DEBUG "release_dev: other->table[%d] "
- "not o_tty for (%s)\n",
- idx, tty->name);
- return;
- }
- if (o_tty->termios != tty->driver->other->termios[idx]) {
- printk(KERN_DEBUG "release_dev: other->termios[%d] "
- "not o_termios for (%s)\n",
- idx, tty->name);
- return;
- }
- if (o_tty->termios_locked !=
- tty->driver->other->termios_locked[idx]) {
- printk(KERN_DEBUG "release_dev: other->termios_locked["
- "%d] not o_termios_locked for (%s)\n",
- idx, tty->name);
- return;
- }
- if (o_tty->link != tty) {
- printk(KERN_DEBUG "release_dev: bad pty pointers\n");
- return;
- }
- }
-#endif
- if (tty->driver->close)
- tty->driver->close(tty, filp);
-
- /*
- * Sanity check: if tty->count is going to zero, there shouldn't be
- * any waiters on tty->read_wait or tty->write_wait. We test the
- * wait queues and kick everyone out _before_ actually starting to
- * close. This ensures that we won't block while releasing the tty
- * structure.
- *
- * The test for the o_tty closing is necessary, since the master and
- * slave sides may close in any order. If the slave side closes out
- * first, its count will be one, since the master side holds an open.
- * Thus this test wouldn't be triggered at the time the slave closes,
- * so we do it now.
- *
- * Note that it's possible for the tty to be opened again while we're
- * flushing out waiters. By recalculating the closing flags before
- * each iteration we avoid any problems.
- */
- while (1) {
- /* Guard against races with tty->count changes elsewhere and
- opens on /dev/tty */
-
- down(&tty_sem);
- tty_closing = tty->count <= 1;
- o_tty_closing = o_tty &&
- (o_tty->count <= (pty_master ? 1 : 0));
- up(&tty_sem);
- do_sleep = 0;
-
- if (tty_closing) {
- if (waitqueue_active(&tty->read_wait)) {
- wake_up(&tty->read_wait);
- do_sleep++;
- }
- if (waitqueue_active(&tty->write_wait)) {
- wake_up(&tty->write_wait);
- do_sleep++;
- }
- }
- if (o_tty_closing) {
- if (waitqueue_active(&o_tty->read_wait)) {
- wake_up(&o_tty->read_wait);
- do_sleep++;
- }
- if (waitqueue_active(&o_tty->write_wait)) {
- wake_up(&o_tty->write_wait);
- do_sleep++;
- }
- }
- if (!do_sleep)
- break;
-
- printk(KERN_WARNING "release_dev: %s: read/write wait queue "
- "active!\n", tty_name(tty, buf));
- schedule();
- }
-
- /*
- * The closing flags are now consistent with the open counts on
- * both sides, and we've completed the last operation that could
- * block, so it's safe to proceed with closing.
- */
-
- down(&tty_sem);
- if (pty_master) {
- if (--o_tty->count < 0) {
- printk(KERN_WARNING "release_dev: bad pty slave count "
- "(%d) for %s\n",
- o_tty->count, tty_name(o_tty, buf));
- o_tty->count = 0;
- }
- }
- if (--tty->count < 0) {
- printk(KERN_WARNING "release_dev: bad tty->count (%d) for %s\n",
- tty->count, tty_name(tty, buf));
- tty->count = 0;
- }
- up(&tty_sem);
-
- /*
- * We've decremented tty->count, so we need to remove this file
- * descriptor off the tty->tty_files list; this serves two
- * purposes:
- * - check_tty_count sees the correct number of file descriptors
- * associated with this tty.
- * - do_tty_hangup no longer sees this file descriptor as
- * something that needs to be handled for hangups.
- */
- file_kill(filp);
- filp->private_data = NULL;
-
- /*
- * Perform some housekeeping before deciding whether to return.
- *
- * Set the TTY_CLOSING flag if this was the last open. In the
- * case of a pty we may have to wait around for the other side
- * to close, and TTY_CLOSING makes sure we can't be reopened.
- */
- if(tty_closing)
- set_bit(TTY_CLOSING, &tty->flags);
- if(o_tty_closing)
- set_bit(TTY_CLOSING, &o_tty->flags);
-
- /*
- * If _either_ side is closing, make sure there aren't any
- * processes that still think tty or o_tty is their controlling
- * tty.
- */
- if (tty_closing || o_tty_closing) {
- struct task_struct *p;
-
- read_lock(&tasklist_lock);
- do_each_task_pid(tty->session, PIDTYPE_SID, p) {
- p->signal->tty = NULL;
- } while_each_task_pid(tty->session, PIDTYPE_SID, p);
- if (o_tty)
- do_each_task_pid(o_tty->session, PIDTYPE_SID, p) {
- p->signal->tty = NULL;
- } while_each_task_pid(o_tty->session, PIDTYPE_SID, p);
- read_unlock(&tasklist_lock);
- }
-
- /* check whether both sides are closing ... */
- if (!tty_closing || (o_tty && !o_tty_closing))
- return;
-
-#ifdef TTY_DEBUG_HANGUP
- printk(KERN_DEBUG "freeing tty structure...");
-#endif
- /*
- * Prevent flush_to_ldisc() from rescheduling the work for later. Then
- * kill any delayed work. As this is the final close it does not
- * race with the set_ldisc code path.
- */
- clear_bit(TTY_LDISC, &tty->flags);
- clear_bit(TTY_DONT_FLIP, &tty->flags);
- cancel_delayed_work(&tty->flip.work);
-
- /*
- * Wait for ->hangup_work and ->flip.work handlers to terminate
- */
-
- flush_scheduled_work();
-
- /*
- * Wait for any short term users (we know they are just driver
- * side waiters as the file is closing so user count on the file
- * side is zero.
- */
- spin_lock_irqsave(&tty_ldisc_lock, flags);
- while(tty->ldisc.refcount)
- {
- spin_unlock_irqrestore(&tty_ldisc_lock, flags);
- wait_event(tty_ldisc_wait, tty->ldisc.refcount == 0);
- spin_lock_irqsave(&tty_ldisc_lock, flags);
- }
- spin_unlock_irqrestore(&tty_ldisc_lock, flags);
- /*
- * Shutdown the current line discipline, and reset it to N_TTY.
- * N.B. why reset ldisc when we're releasing the memory??
- *
- * FIXME: this MUST get fixed for the new reflocking
- */
- if (tty->ldisc.close)
- (tty->ldisc.close)(tty);
- tty_ldisc_put(tty->ldisc.num);
-
- /*
- * Switch the line discipline back
- */
- tty_ldisc_assign(tty, tty_ldisc_get(N_TTY));
- tty_set_termios_ldisc(tty,N_TTY);
- if (o_tty) {
- /* FIXME: could o_tty be in setldisc here ? */
- clear_bit(TTY_LDISC, &o_tty->flags);
- if (o_tty->ldisc.close)
- (o_tty->ldisc.close)(o_tty);
- tty_ldisc_put(o_tty->ldisc.num);
- tty_ldisc_assign(o_tty, tty_ldisc_get(N_TTY));
- tty_set_termios_ldisc(o_tty,N_TTY);
- }
- /*
- * The release_mem function takes care of the details of clearing
- * the slots and preserving the termios structure.
- */
- release_mem(tty, idx);
-
-#ifdef CONFIG_UNIX98_PTYS
- /* Make this pty number available for reallocation */
- if (devpts) {
- down(&allocated_ptys_lock);
- idr_remove(&allocated_ptys, idx);
- up(&allocated_ptys_lock);
- }
-#endif
-
-}
-
-/*
- * tty_open and tty_release keep up the tty count that contains the
- * number of opens done on a tty. We cannot use the inode-count, as
- * different inodes might point to the same tty.
- *
- * Open-counting is needed for pty masters, as well as for keeping
- * track of serial lines: DTR is dropped when the last close happens.
- * (This is not done solely through tty->count, now. - Ted 1/27/92)
- *
- * The termios state of a pty is reset on first open so that
- * settings don't persist across reuse.
- */
-static int tty_open(struct inode * inode, struct file * filp)
-{
- struct tty_struct *tty;
- int noctty, retval;
- struct tty_driver *driver;
- int index;
- dev_t device = inode->i_rdev;
- unsigned short saved_flags = filp->f_flags;
-
- nonseekable_open(inode, filp);
-
-retry_open:
- noctty = filp->f_flags & O_NOCTTY;
- index = -1;
- retval = 0;
-
- down(&tty_sem);
-
- if (device == MKDEV(TTYAUX_MAJOR,0)) {
- if (!current->signal->tty) {
- up(&tty_sem);
- return -ENXIO;
- }
- driver = current->signal->tty->driver;
- index = current->signal->tty->index;
- filp->f_flags |= O_NONBLOCK; /* Don't let /dev/tty block */
- /* noctty = 1; */
- goto got_driver;
- }
-#ifdef CONFIG_VT
- if (console_use_vt && (device == MKDEV(TTY_MAJOR,0))) {
- extern int fg_console;
- extern struct tty_driver *console_driver;
- driver = console_driver;
- index = fg_console;
- noctty = 1;
- goto got_driver;
- }
-#endif
- if (device == MKDEV(TTYAUX_MAJOR,1)) {
- driver = console_device(&index);
- if (driver) {
- /* Don't let /dev/console block */
- filp->f_flags |= O_NONBLOCK;
- noctty = 1;
- goto got_driver;
- }
- up(&tty_sem);
- return -ENODEV;
- }
-
- driver = get_tty_driver(device, &index);
- if (!driver) {
- up(&tty_sem);
- return -ENODEV;
- }
-got_driver:
- retval = init_dev(driver, index, &tty);
- up(&tty_sem);
- if (retval)
- return retval;
-
- filp->private_data = tty;
- file_move(filp, &tty->tty_files);
- check_tty_count(tty, "tty_open");
- if (tty->driver->type == TTY_DRIVER_TYPE_PTY &&
- tty->driver->subtype == PTY_TYPE_MASTER)
- noctty = 1;
-#ifdef TTY_DEBUG_HANGUP
- printk(KERN_DEBUG "opening %s...", tty->name);
-#endif
- if (!retval) {
- if (tty->driver->open)
- retval = tty->driver->open(tty, filp);
- else
- retval = -ENODEV;
- }
- filp->f_flags = saved_flags;
-
- if (!retval && test_bit(TTY_EXCLUSIVE, &tty->flags) &&
!capable(CAP_SYS_ADMIN))
- retval = -EBUSY;
-
- if (retval) {
-#ifdef TTY_DEBUG_HANGUP
- printk(KERN_DEBUG "error %d in opening %s...", retval,
- tty->name);
-#endif
- release_dev(filp);
- if (retval != -ERESTARTSYS)
- return retval;
- if (signal_pending(current))
- return retval;
- schedule();
- /*
- * Need to reset f_op in case a hangup happened.
- */
- if (filp->f_op == &hung_up_tty_fops)
- filp->f_op = &tty_fops;
- goto retry_open;
- }
- if (!noctty &&
- current->signal->leader &&
- !current->signal->tty &&
- tty->session == 0) {
- task_lock(current);
- current->signal->tty = tty;
- task_unlock(current);
- current->signal->tty_old_pgrp = 0;
- tty->session = current->signal->session;
- tty->pgrp = process_group(current);
- }
- return 0;
-}
-
-#ifdef CONFIG_UNIX98_PTYS
-static int ptmx_open(struct inode * inode, struct file * filp)
-{
- struct tty_struct *tty;
- int retval;
- int index;
- int idr_ret;
-
- nonseekable_open(inode, filp);
-
- /* find a device that is not in use. */
- down(&allocated_ptys_lock);
- if (!idr_pre_get(&allocated_ptys, GFP_KERNEL)) {
- up(&allocated_ptys_lock);
- return -ENOMEM;
- }
- idr_ret = idr_get_new(&allocated_ptys, NULL, &index);
- if (idr_ret < 0) {
- up(&allocated_ptys_lock);
- if (idr_ret == -EAGAIN)
- return -ENOMEM;
- return -EIO;
- }
- if (index >= pty_limit) {
- idr_remove(&allocated_ptys, index);
- up(&allocated_ptys_lock);
- return -EIO;
- }
- up(&allocated_ptys_lock);
-
- down(&tty_sem);
- retval = init_dev(ptm_driver, index, &tty);
- up(&tty_sem);
-
- if (retval)
- goto out;
-
- set_bit(TTY_PTY_LOCK, &tty->flags); /* LOCK THE SLAVE */
- filp->private_data = tty;
- file_move(filp, &tty->tty_files);
-
- retval = -ENOMEM;
- if (devpts_pty_new(tty->link))
- goto out1;
-
- check_tty_count(tty, "tty_open");
- retval = ptm_driver->open(tty, filp);
- if (!retval)
- return 0;
-out1:
- release_dev(filp);
-out:
- down(&allocated_ptys_lock);
- idr_remove(&allocated_ptys, index);
- up(&allocated_ptys_lock);
- return retval;
-}
-#endif
-
-static int tty_release(struct inode * inode, struct file * filp)
-{
- lock_kernel();
- release_dev(filp);
- unlock_kernel();
- return 0;
-}
-
-/* No kernel lock held - fine */
-static unsigned int tty_poll(struct file * filp, poll_table * wait)
-{
- struct tty_struct * tty;
- struct tty_ldisc *ld;
- int ret = 0;
-
- tty = (struct tty_struct *)filp->private_data;
- if (tty_paranoia_check(tty, filp->f_dentry->d_inode, "tty_poll"))
- return 0;
-
- ld = tty_ldisc_ref_wait(tty);
- if (ld->poll)
- ret = (ld->poll)(tty, filp, wait);
- tty_ldisc_deref(ld);
- return ret;
-}
-
-static int tty_fasync(int fd, struct file * filp, int on)
-{
- struct tty_struct * tty;
- int retval;
-
- tty = (struct tty_struct *)filp->private_data;
- if (tty_paranoia_check(tty, filp->f_dentry->d_inode, "tty_fasync"))
- return 0;
-
- retval = fasync_helper(fd, filp, on, &tty->fasync);
- if (retval <= 0)
- return retval;
-
- if (on) {
- if (!waitqueue_active(&tty->read_wait))
- tty->minimum_to_wake = 1;
- retval = f_setown(filp, (-tty->pgrp) ? : current->pid, 0);
- if (retval)
- return retval;
- } else {
- if (!tty->fasync && !waitqueue_active(&tty->read_wait))
- tty->minimum_to_wake = N_TTY_BUF_SIZE;
- }
- return 0;
-}
-
-static int tiocsti(struct tty_struct *tty, char __user *p)
-{
- char ch, mbz = 0;
- struct tty_ldisc *ld;
-
- if ((current->signal->tty != tty) && !capable(CAP_SYS_ADMIN))
- return -EPERM;
- if (get_user(ch, p))
- return -EFAULT;
- ld = tty_ldisc_ref_wait(tty);
- ld->receive_buf(tty, &ch, &mbz, 1);
- tty_ldisc_deref(ld);
- return 0;
-}
-
-static int tiocgwinsz(struct tty_struct *tty, struct winsize __user * arg)
-{
- if (copy_to_user(arg, &tty->winsize, sizeof(*arg)))
- return -EFAULT;
- return 0;
-}
-
-static int tiocswinsz(struct tty_struct *tty, struct tty_struct *real_tty,
- struct winsize __user * arg)
-{
- struct winsize tmp_ws;
-
- if (copy_from_user(&tmp_ws, arg, sizeof(*arg)))
- return -EFAULT;
- if (!memcmp(&tmp_ws, &tty->winsize, sizeof(*arg)))
- return 0;
-#ifdef CONFIG_VT
- if (tty->driver->type == TTY_DRIVER_TYPE_CONSOLE) {
- unsigned int currcons = tty->index;
- int rc;
-
- acquire_console_sem();
- rc = vc_resize(currcons, tmp_ws.ws_col, tmp_ws.ws_row);
- release_console_sem();
- if (rc)
- return -ENXIO;
- }
-#endif
- if (tty->pgrp > 0)
- kill_pg(tty->pgrp, SIGWINCH, 1);
- if ((real_tty->pgrp != tty->pgrp) && (real_tty->pgrp > 0))
- kill_pg(real_tty->pgrp, SIGWINCH, 1);
- tty->winsize = tmp_ws;
- real_tty->winsize = tmp_ws;
- return 0;
-}
-
-static int tioccons(struct file *file)
-{
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
- if (file->f_op->write == redirected_tty_write) {
- struct file *f;
- spin_lock(&redirect_lock);
- f = redirect;
- redirect = NULL;
- spin_unlock(&redirect_lock);
- if (f)
- fput(f);
- return 0;
- }
- spin_lock(&redirect_lock);
- if (redirect) {
- spin_unlock(&redirect_lock);
- return -EBUSY;
- }
- get_file(file);
- redirect = file;
- spin_unlock(&redirect_lock);
- return 0;
-}
-
-
-static int fionbio(struct file *file, int __user *p)
-{
- int nonblock;
-
- if (get_user(nonblock, p))
- return -EFAULT;
-
- if (nonblock)
- file->f_flags |= O_NONBLOCK;
- else
- file->f_flags &= ~O_NONBLOCK;
- return 0;
-}
-
-static int tiocsctty(struct tty_struct *tty, int arg)
-{
- task_t *p;
-
- if (current->signal->leader &&
- (current->signal->session == tty->session))
- return 0;
- /*
- * The process must be a session leader and
- * not have a controlling tty already.
- */
- if (!current->signal->leader || current->signal->tty)
- return -EPERM;
- if (tty->session > 0) {
- /*
- * This tty is already the controlling
- * tty for another session group!
- */
- if ((arg == 1) && capable(CAP_SYS_ADMIN)) {
- /*
- * Steal it away
- */
-
- read_lock(&tasklist_lock);
- do_each_task_pid(tty->session, PIDTYPE_SID, p) {
- p->signal->tty = NULL;
- } while_each_task_pid(tty->session, PIDTYPE_SID, p);
- read_unlock(&tasklist_lock);
- } else
- return -EPERM;
- }
- task_lock(current);
- current->signal->tty = tty;
- task_unlock(current);
- current->signal->tty_old_pgrp = 0;
- tty->session = current->signal->session;
- tty->pgrp = process_group(current);
- return 0;
-}
-
-static int tiocgpgrp(struct tty_struct *tty, struct tty_struct *real_tty,
pid_t __user *p)
-{
- /*
- * (tty == real_tty) is a cheap way of
- * testing if the tty is NOT a master pty.
- */
- if (tty == real_tty && current->signal->tty != real_tty)
- return -ENOTTY;
- return put_user(real_tty->pgrp, p);
-}
-
-static int tiocspgrp(struct tty_struct *tty, struct tty_struct *real_tty,
pid_t __user *p)
-{
- pid_t pgrp;
- int retval = tty_check_change(real_tty);
-
- if (retval == -EIO)
- return -ENOTTY;
- if (retval)
- return retval;
- if (!current->signal->tty ||
- (current->signal->tty != real_tty) ||
- (real_tty->session != current->signal->session))
- return -ENOTTY;
- if (get_user(pgrp, p))
- return -EFAULT;
- if (pgrp < 0)
- return -EINVAL;
- if (session_of_pgrp(pgrp) != current->signal->session)
- return -EPERM;
- real_tty->pgrp = pgrp;
- return 0;
-}
-
-static int tiocgsid(struct tty_struct *tty, struct tty_struct *real_tty, pid_t
__user *p)
-{
- /*
- * (tty == real_tty) is a cheap way of
- * testing if the tty is NOT a master pty.
- */
- if (tty == real_tty && current->signal->tty != real_tty)
- return -ENOTTY;
- if (real_tty->session <= 0)
- return -ENOTTY;
- return put_user(real_tty->session, p);
-}
-
-static int tiocsetd(struct tty_struct *tty, int __user *p)
-{
- int ldisc;
-
- if (get_user(ldisc, p))
- return -EFAULT;
- return tty_set_ldisc(tty, ldisc);
-}
-
-static int send_break(struct tty_struct *tty, int duration)
-{
- tty->driver->break_ctl(tty, -1);
- if (!signal_pending(current)) {
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(duration);
- }
- tty->driver->break_ctl(tty, 0);
- if (signal_pending(current))
- return -EINTR;
- return 0;
-}
-
-static int
-tty_tiocmget(struct tty_struct *tty, struct file *file, int __user *p)
-{
- int retval = -EINVAL;
-
- if (tty->driver->tiocmget) {
- retval = tty->driver->tiocmget(tty, file);
-
- if (retval >= 0)
- retval = put_user(retval, p);
- }
- return retval;
-}
-
-static int
-tty_tiocmset(struct tty_struct *tty, struct file *file, unsigned int cmd,
- unsigned __user *p)
-{
- int retval = -EINVAL;
-
- if (tty->driver->tiocmset) {
- unsigned int set, clear, val;
-
- retval = get_user(val, p);
- if (retval)
- return retval;
-
- set = clear = 0;
- switch (cmd) {
- case TIOCMBIS:
- set = val;
- break;
- case TIOCMBIC:
- clear = val;
- break;
- case TIOCMSET:
- set = val;
- clear = ~val;
- break;
- }
-
- set &= TIOCM_DTR|TIOCM_RTS|TIOCM_OUT1|TIOCM_OUT2|TIOCM_LOOP;
- clear &= TIOCM_DTR|TIOCM_RTS|TIOCM_OUT1|TIOCM_OUT2|TIOCM_LOOP;
-
- retval = tty->driver->tiocmset(tty, file, set, clear);
- }
- return retval;
-}
-
-/*
- * Split this up, as gcc can choke on it otherwise..
- */
-int tty_ioctl(struct inode * inode, struct file * file,
- unsigned int cmd, unsigned long arg)
-{
- struct tty_struct *tty, *real_tty;
- void __user *p = (void __user *)arg;
- int retval;
- struct tty_ldisc *ld;
-
- tty = (struct tty_struct *)file->private_data;
- if (tty_paranoia_check(tty, inode, "tty_ioctl"))
- return -EINVAL;
-
- real_tty = tty;
- if (tty->driver->type == TTY_DRIVER_TYPE_PTY &&
- tty->driver->subtype == PTY_TYPE_MASTER)
- real_tty = tty->link;
-
- /*
- * Break handling by driver
- */
- if (!tty->driver->break_ctl) {
- switch(cmd) {
- case TIOCSBRK:
- case TIOCCBRK:
- if (tty->driver->ioctl)
- return tty->driver->ioctl(tty, file, cmd, arg);
- return -EINVAL;
-
- /* These two ioctl's always return success; even if */
- /* the driver doesn't support them. */
- case TCSBRK:
- case TCSBRKP:
- if (!tty->driver->ioctl)
- return 0;
- retval = tty->driver->ioctl(tty, file, cmd, arg);
- if (retval == -ENOIOCTLCMD)
- retval = 0;
- return retval;
- }
- }
-
- /*
- * Factor out some common prep work
- */
- switch (cmd) {
- case TIOCSETD:
- case TIOCSBRK:
- case TIOCCBRK:
- case TCSBRK:
- case TCSBRKP:
- retval = tty_check_change(tty);
- if (retval)
- return retval;
- if (cmd != TIOCCBRK) {
- tty_wait_until_sent(tty, 0);
- if (signal_pending(current))
- return -EINTR;
- }
- break;
- }
-
- switch (cmd) {
- case TIOCSTI:
- return tiocsti(tty, p);
- case TIOCGWINSZ:
- return tiocgwinsz(tty, p);
- case TIOCSWINSZ:
- return tiocswinsz(tty, real_tty, p);
- case TIOCCONS:
- return real_tty!=tty ? -EINVAL : tioccons(file);
- case FIONBIO:
- return fionbio(file, p);
- case TIOCEXCL:
- set_bit(TTY_EXCLUSIVE, &tty->flags);
- return 0;
- case TIOCNXCL:
- clear_bit(TTY_EXCLUSIVE, &tty->flags);
- return 0;
- case TIOCNOTTY:
- if (current->signal->tty != tty)
- return -ENOTTY;
- if (current->signal->leader)
- disassociate_ctty(0);
- task_lock(current);
- current->signal->tty = NULL;
- task_unlock(current);
- return 0;
- case TIOCSCTTY:
- return tiocsctty(tty, arg);
- case TIOCGPGRP:
- return tiocgpgrp(tty, real_tty, p);
- case TIOCSPGRP:
- return tiocspgrp(tty, real_tty, p);
- case TIOCGSID:
- return tiocgsid(tty, real_tty, p);
- case TIOCGETD:
- /* FIXME: check this is ok */
- return put_user(tty->ldisc.num, (int __user *)p);
- case TIOCSETD:
- return tiocsetd(tty, p);
-#ifdef CONFIG_VT
- case TIOCLINUX:
- return tioclinux(tty, arg);
-#endif
- /*
- * Break handling
- */
- case TIOCSBRK: /* Turn break on, unconditionally */
- tty->driver->break_ctl(tty, -1);
- return 0;
-
- case TIOCCBRK: /* Turn break off, unconditionally */
- tty->driver->break_ctl(tty, 0);
- return 0;
- case TCSBRK: /* SVID version: non-zero arg --> no break */
- /*
- * XXX is the above comment correct, or the
- * code below correct? Is this ioctl used at
- * all by anyone?
- */
- if (!arg)
- return send_break(tty, HZ/4);
- return 0;
- case TCSBRKP: /* support for POSIX tcsendbreak() */
- return send_break(tty, arg ? arg*(HZ/10) : HZ/4);
-
- case TIOCMGET:
- return tty_tiocmget(tty, file, p);
-
- case TIOCMSET:
- case TIOCMBIC:
- case TIOCMBIS:
- return tty_tiocmset(tty, file, cmd, p);
- }
- if (tty->driver->ioctl) {
- retval = (tty->driver->ioctl)(tty, file, cmd, arg);
- if (retval != -ENOIOCTLCMD)
- return retval;
- }
- ld = tty_ldisc_ref_wait(tty);
- retval = -EINVAL;
- if (ld->ioctl) {
- retval = ld->ioctl(tty, file, cmd, arg);
- if (retval == -ENOIOCTLCMD)
- retval = -EINVAL;
- }
- tty_ldisc_deref(ld);
- return retval;
-}
-
-
-/*
- * This implements the "Secure Attention Key" --- the idea is to
- * prevent trojan horses by killing all processes associated with this
- * tty when the user hits the "Secure Attention Key". Required for
- * super-paranoid applications --- see the Orange Book for more details.
- *
- * This code could be nicer; ideally it should send a HUP, wait a few
- * seconds, then send a INT, and then a KILL signal. But you then
- * have to coordinate with the init process, since all processes associated
- * with the current tty must be dead before the new getty is allowed
- * to spawn.
- *
- * Now, if it would be correct ;-/ The current code has a nasty hole -
- * it doesn't catch files in flight. We may send the descriptor to ourselves
- * via AF_UNIX socket, close it and later fetch from socket. FIXME.
- *
- * Nasty bug: do_SAK is being called in interrupt context. This can
- * deadlock. We punt it up to process context. AKPM - 16Mar2001
- */
-static void __do_SAK(void *arg)
-{
-#ifdef TTY_SOFT_SAK
- tty_hangup(tty);
-#else
- struct tty_struct *tty = arg;
- struct task_struct *p;
- int session;
- int i;
- struct file *filp;
- struct tty_ldisc *disc;
-
- if (!tty)
- return;
- session = tty->session;
-
- /* We don't want an ldisc switch during this */
- disc = tty_ldisc_ref(tty);
- if (disc && disc->flush_buffer)
- disc->flush_buffer(tty);
- tty_ldisc_deref(disc);
-
- if (tty->driver->flush_buffer)
- tty->driver->flush_buffer(tty);
-
- read_lock(&tasklist_lock);
- do_each_task_pid(session, PIDTYPE_SID, p) {
- if (p->signal->tty == tty || session > 0) {
- printk(KERN_NOTICE "SAK: killed process %d"
- " (%s): p->signal->session==tty->session\n",
- p->pid, p->comm);
- send_sig(SIGKILL, p, 1);
- continue;
- }
- task_lock(p);
- if (p->files) {
- spin_lock(&p->files->file_lock);
- for (i=0; i < p->files->max_fds; i++) {
- filp = fcheck_files(p->files, i);
- if (!filp)
- continue;
- if (filp->f_op->read == tty_read &&
- filp->private_data == tty) {
- printk(KERN_NOTICE "SAK: killed process
%d"
- " (%s): fd#%d opened to the tty\n",
- p->pid, p->comm, i);
- send_sig(SIGKILL, p, 1);
- break;
- }
- }
- spin_unlock(&p->files->file_lock);
- }
- task_unlock(p);
- } while_each_task_pid(session, PIDTYPE_SID, p);
- read_unlock(&tasklist_lock);
-#endif
-}
-
-/*
- * The tq handling here is a little racy - tty->SAK_work may already be queued.
- * Fortunately we don't need to worry, because if ->SAK_work is already queued,
- * the values which we write to it will be identical to the values which it
- * already has. --akpm
- */
-void do_SAK(struct tty_struct *tty)
-{
- if (!tty)
- return;
- PREPARE_WORK(&tty->SAK_work, __do_SAK, tty);
- schedule_work(&tty->SAK_work);
-}
-
-EXPORT_SYMBOL(do_SAK);
-
-/*
- * This routine is called out of the software interrupt to flush data
- * from the flip buffer to the line discipline.
- */
-
-static void flush_to_ldisc(void *private_)
-{
- struct tty_struct *tty = (struct tty_struct *) private_;
- unsigned char *cp;
- char *fp;
- int count;
- unsigned long flags;
- struct tty_ldisc *disc;
-
- disc = tty_ldisc_ref(tty);
- if (disc == NULL) /* !TTY_LDISC */
- return;
-
- if (test_bit(TTY_DONT_FLIP, &tty->flags)) {
- /*
- * Do it after the next timer tick:
- */
- schedule_delayed_work(&tty->flip.work, 1);
- goto out;
- }
- spin_lock_irqsave(&tty->read_lock, flags);
- if (tty->flip.buf_num) {
- cp = tty->flip.char_buf + TTY_FLIPBUF_SIZE;
- fp = tty->flip.flag_buf + TTY_FLIPBUF_SIZE;
- tty->flip.buf_num = 0;
- tty->flip.char_buf_ptr = tty->flip.char_buf;
- tty->flip.flag_buf_ptr = tty->flip.flag_buf;
- } else {
- cp = tty->flip.char_buf;
- fp = tty->flip.flag_buf;
- tty->flip.buf_num = 1;
- tty->flip.char_buf_ptr = tty->flip.char_buf + TTY_FLIPBUF_SIZE;
- tty->flip.flag_buf_ptr = tty->flip.flag_buf + TTY_FLIPBUF_SIZE;
- }
- count = tty->flip.count;
- tty->flip.count = 0;
- spin_unlock_irqrestore(&tty->read_lock, flags);
-
- disc->receive_buf(tty, cp, fp, count);
-out:
- tty_ldisc_deref(disc);
-}
-
-/*
- * Routine which returns the baud rate of the tty
- *
- * Note that the baud_table needs to be kept in sync with the
- * include/asm/termbits.h file.
- */
-static int baud_table[] = {
- 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
- 9600, 19200, 38400, 57600, 115200, 230400, 460800,
-#ifdef __sparc__
- 76800, 153600, 307200, 614400, 921600
-#else
- 500000, 576000, 921600, 1000000, 1152000, 1500000, 2000000,
- 2500000, 3000000, 3500000, 4000000
-#endif
-};
-
-static int n_baud_table = ARRAY_SIZE(baud_table);
-
-/**
- * tty_termios_baud_rate
- * @termios: termios structure
- *
- * Convert termios baud rate data into a speed. This should be called
- * with the termios lock held if this termios is a terminal termios
- * structure. May change the termios data.
- */
-
-int tty_termios_baud_rate(struct termios *termios)
-{
- unsigned int cbaud;
-
- cbaud = termios->c_cflag & CBAUD;
-
- if (cbaud & CBAUDEX) {
- cbaud &= ~CBAUDEX;
-
- if (cbaud < 1 || cbaud + 15 > n_baud_table)
- termios->c_cflag &= ~CBAUDEX;
- else
- cbaud += 15;
- }
- return baud_table[cbaud];
-}
-
-EXPORT_SYMBOL(tty_termios_baud_rate);
-
-/**
- * tty_get_baud_rate - get tty bit rates
- * @tty: tty to query
- *
- * Returns the baud rate as an integer for this terminal. The
- * termios lock must be held by the caller and the terminal bit
- * flags may be updated.
- */
-
-int tty_get_baud_rate(struct tty_struct *tty)
-{
- int baud = tty_termios_baud_rate(tty->termios);
-
- if (baud == 38400 && tty->alt_speed) {
- if (!tty->warned) {
- printk(KERN_WARNING "Use of setserial/setrocket to "
- "set SPD_* flags is deprecated\n");
- tty->warned = 1;
- }
- baud = tty->alt_speed;
- }
-
- return baud;
-}
-
-EXPORT_SYMBOL(tty_get_baud_rate);
-
-/**
- * tty_flip_buffer_push - terminal
- * @tty: tty to push
- *
- * Queue a push of the terminal flip buffers to the line discipline. This
- * function must not be called from IRQ context if tty->low_latency is set.
- *
- * In the event of the queue being busy for flipping the work will be
- * held off and retried later.
- */
-
-void tty_flip_buffer_push(struct tty_struct *tty)
-{
- if (tty->low_latency)
- flush_to_ldisc((void *) tty);
- else
- schedule_delayed_work(&tty->flip.work, 1);
-}
-
-EXPORT_SYMBOL(tty_flip_buffer_push);
-
-/*
- * This subroutine initializes a tty structure.
- */
-static void initialize_tty_struct(struct tty_struct *tty)
-{
- memset(tty, 0, sizeof(struct tty_struct));
- tty->magic = TTY_MAGIC;
- tty_ldisc_assign(tty, tty_ldisc_get(N_TTY));
- tty->pgrp = -1;
- tty->flip.char_buf_ptr = tty->flip.char_buf;
- tty->flip.flag_buf_ptr = tty->flip.flag_buf;
- INIT_WORK(&tty->flip.work, flush_to_ldisc, tty);
- init_MUTEX(&tty->flip.pty_sem);
- init_MUTEX(&tty->termios_sem);
- init_waitqueue_head(&tty->write_wait);
- init_waitqueue_head(&tty->read_wait);
- INIT_WORK(&tty->hangup_work, do_tty_hangup, tty);
- sema_init(&tty->atomic_read, 1);
- sema_init(&tty->atomic_write, 1);
- spin_lock_init(&tty->read_lock);
- INIT_LIST_HEAD(&tty->tty_files);
- INIT_WORK(&tty->SAK_work, NULL, NULL);
-}
-
-/*
- * The default put_char routine if the driver did not define one.
- */
-static void tty_default_put_char(struct tty_struct *tty, unsigned char ch)
-{
- tty->driver->write(tty, &ch, 1);
-}
-
-static struct class_simple *tty_class;
-
-/**
- * tty_register_device - register a tty device
- * @driver: the tty driver that describes the tty device
- * @index: the index in the tty driver for this tty device
- * @device: a struct device that is associated with this tty device.
- * This field is optional, if there is no known struct device for this
- * tty device it can be set to NULL safely.
- *
- * This call is required to be made to register an individual tty device if
- * the tty driver's flags have the TTY_DRIVER_NO_DEVFS bit set. If that
- * bit is not set, this function should not be called.
- */
-void tty_register_device(struct tty_driver *driver, unsigned index,
- struct device *device)
-{
- char name[64];
- dev_t dev = MKDEV(driver->major, driver->minor_start) + index;
-
- if (index >= driver->num) {
- printk(KERN_ERR "Attempt to register invalid tty line number "
- " (%d).\n", index);
- return;
- }
-
- devfs_mk_cdev(dev, S_IFCHR | S_IRUSR | S_IWUSR,
- "%s%d", driver->devfs_name, index + driver->name_base);
-
- if (driver->type == TTY_DRIVER_TYPE_PTY)
- pty_line_name(driver, index, name);
- else
- tty_line_name(driver, index, name);
- class_simple_device_add(tty_class, dev, device, name);
-}
-
-/**
- * tty_unregister_device - unregister a tty device
- * @driver: the tty driver that describes the tty device
- * @index: the index in the tty driver for this tty device
- *
- * If a tty device is registered with a call to tty_register_device() then
- * this function must be made when the tty device is gone.
- */
-void tty_unregister_device(struct tty_driver *driver, unsigned index)
-{
- devfs_remove("%s%d", driver->devfs_name, index + driver->name_base);
- class_simple_device_remove(MKDEV(driver->major, driver->minor_start) +
index);
-}
-
-EXPORT_SYMBOL(tty_register_device);
-EXPORT_SYMBOL(tty_unregister_device);
-
-struct tty_driver *alloc_tty_driver(int lines)
-{
- struct tty_driver *driver;
-
- driver = kmalloc(sizeof(struct tty_driver), GFP_KERNEL);
- if (driver) {
- memset(driver, 0, sizeof(struct tty_driver));
- driver->magic = TTY_DRIVER_MAGIC;
- driver->num = lines;
- /* later we'll move allocation of tables here */
- }
- return driver;
-}
-
-void put_tty_driver(struct tty_driver *driver)
-{
- kfree(driver);
-}
-
-void tty_set_operations(struct tty_driver *driver, struct tty_operations *op)
-{
- driver->open = op->open;
- driver->close = op->close;
- driver->write = op->write;
- driver->put_char = op->put_char;
- driver->flush_chars = op->flush_chars;
- driver->write_room = op->write_room;
- driver->chars_in_buffer = op->chars_in_buffer;
- driver->ioctl = op->ioctl;
- driver->set_termios = op->set_termios;
- driver->throttle = op->throttle;
- driver->unthrottle = op->unthrottle;
- driver->stop = op->stop;
- driver->start = op->start;
- driver->hangup = op->hangup;
- driver->break_ctl = op->break_ctl;
- driver->flush_buffer = op->flush_buffer;
- driver->set_ldisc = op->set_ldisc;
- driver->wait_until_sent = op->wait_until_sent;
- driver->send_xchar = op->send_xchar;
- driver->read_proc = op->read_proc;
- driver->write_proc = op->write_proc;
- driver->tiocmget = op->tiocmget;
- driver->tiocmset = op->tiocmset;
-}
-
-
-EXPORT_SYMBOL(alloc_tty_driver);
-EXPORT_SYMBOL(put_tty_driver);
-EXPORT_SYMBOL(tty_set_operations);
-
-/*
- * Called by a tty driver to register itself.
- */
-int tty_register_driver(struct tty_driver *driver)
-{
- int error;
- int i;
- dev_t dev;
- void **p = NULL;
-
- if (driver->flags & TTY_DRIVER_INSTALLED)
- return 0;
-
- if (!(driver->flags & TTY_DRIVER_DEVPTS_MEM)) {
- p = kmalloc(driver->num * 3 * sizeof(void *), GFP_KERNEL);
- if (!p)
- return -ENOMEM;
- memset(p, 0, driver->num * 3 * sizeof(void *));
- }
-
- if (!driver->major) {
- error = alloc_chrdev_region(&dev, driver->minor_start,
driver->num,
- (char*)driver->name);
- if (!error) {
- driver->major = MAJOR(dev);
- driver->minor_start = MINOR(dev);
- }
- } else {
- dev = MKDEV(driver->major, driver->minor_start);
- error = register_chrdev_region(dev, driver->num,
- (char*)driver->name);
- }
- if (error < 0) {
- kfree(p);
- return error;
- }
-
- if (p) {
- driver->ttys = (struct tty_struct **)p;
- driver->termios = (struct termios **)(p + driver->num);
- driver->termios_locked = (struct termios **)(p + driver->num *
2);
- } else {
- driver->ttys = NULL;
- driver->termios = NULL;
- driver->termios_locked = NULL;
- }
-
- cdev_init(&driver->cdev, &tty_fops);
- driver->cdev.owner = driver->owner;
- error = cdev_add(&driver->cdev, dev, driver->num);
- if (error) {
- cdev_del(&driver->cdev);
- unregister_chrdev_region(dev, driver->num);
- driver->ttys = NULL;
- driver->termios = driver->termios_locked = NULL;
- kfree(p);
- return error;
- }
-
- if (!driver->put_char)
- driver->put_char = tty_default_put_char;
-
- list_add(&driver->tty_drivers, &tty_drivers);
-
- if ( !(driver->flags & TTY_DRIVER_NO_DEVFS) ) {
- for(i = 0; i < driver->num; i++)
- tty_register_device(driver, i, NULL);
- }
- proc_tty_register_driver(driver);
- return 0;
-}
-
-EXPORT_SYMBOL(tty_register_driver);
-
-/*
- * Called by a tty driver to unregister itself.
- */
-int tty_unregister_driver(struct tty_driver *driver)
-{
- int i;
- struct termios *tp;
- void *p;
-
- if (driver->refcount)
- return -EBUSY;
-
- unregister_chrdev_region(MKDEV(driver->major, driver->minor_start),
- driver->num);
-
- list_del(&driver->tty_drivers);
-
- /*
- * Free the termios and termios_locked structures because
- * we don't want to get memory leaks when modular tty
- * drivers are removed from the kernel.
- */
- for (i = 0; i < driver->num; i++) {
- tp = driver->termios[i];
- if (tp) {
- driver->termios[i] = NULL;
- kfree(tp);
- }
- tp = driver->termios_locked[i];
- if (tp) {
- driver->termios_locked[i] = NULL;
- kfree(tp);
- }
- if (!(driver->flags & TTY_DRIVER_NO_DEVFS))
- tty_unregister_device(driver, i);
- }
- p = driver->ttys;
- proc_tty_unregister_driver(driver);
- driver->ttys = NULL;
- driver->termios = driver->termios_locked = NULL;
- kfree(p);
- cdev_del(&driver->cdev);
- return 0;
-}
-
-EXPORT_SYMBOL(tty_unregister_driver);
-
-
-/*
- * Initialize the console device. This is called *early*, so
- * we can't necessarily depend on lots of kernel help here.
- * Just do some early initializations, and do the complex setup
- * later.
- */
-void __init console_init(void)
-{
- initcall_t *call;
-
- /* Setup the default TTY line discipline. */
- (void) tty_register_ldisc(N_TTY, &tty_ldisc_N_TTY);
-
- /*
- * set up the console device so that later boot sequences can
- * inform about problems etc..
- */
-#ifdef CONFIG_EARLY_PRINTK
- disable_early_printk();
-#endif
-#ifdef CONFIG_SERIAL_68360
- /* This is not a console initcall. I know not what it's doing here.
- So I haven't moved it. dwmw2 */
- rs_360_init();
-#endif
- call = __con_initcall_start;
- while (call < __con_initcall_end) {
- (*call)();
- call++;
- }
-}
-
-#ifdef CONFIG_VT
-extern int vty_init(void);
-#endif
-
-static int __init tty_class_init(void)
-{
- tty_class = class_simple_create(THIS_MODULE, "tty");
- if (IS_ERR(tty_class))
- return PTR_ERR(tty_class);
- return 0;
-}
-
-postcore_initcall(tty_class_init);
-
-/* 3/2004 jmc: why do these devices exist? */
-
-static struct cdev tty_cdev, console_cdev;
-#ifdef CONFIG_UNIX98_PTYS
-static struct cdev ptmx_cdev;
-#endif
-#ifdef CONFIG_VT
-static struct cdev vc0_cdev;
-#endif
-
-/*
- * Ok, now we can initialize the rest of the tty devices and can count
- * on memory allocations, interrupts etc..
- */
-static int __init tty_init(void)
-{
- cdev_init(&tty_cdev, &tty_fops);
- if (cdev_add(&tty_cdev, MKDEV(TTYAUX_MAJOR, 0), 1) ||
- register_chrdev_region(MKDEV(TTYAUX_MAJOR, 0), 1, "/dev/tty") < 0)
- panic("Couldn't register /dev/tty driver\n");
- devfs_mk_cdev(MKDEV(TTYAUX_MAJOR, 0), S_IFCHR|S_IRUGO|S_IWUGO, "tty");
- class_simple_device_add(tty_class, MKDEV(TTYAUX_MAJOR, 0), NULL, "tty");
-
- cdev_init(&console_cdev, &console_fops);
- if (cdev_add(&console_cdev, MKDEV(TTYAUX_MAJOR, 1), 1) ||
- register_chrdev_region(MKDEV(TTYAUX_MAJOR, 1), 1, "/dev/console") <
0)
- panic("Couldn't register /dev/console driver\n");
- devfs_mk_cdev(MKDEV(TTYAUX_MAJOR, 1), S_IFCHR|S_IRUSR|S_IWUSR,
"console");
- class_simple_device_add(tty_class, MKDEV(TTYAUX_MAJOR, 1), NULL,
"console");
-
-#ifdef CONFIG_UNIX98_PTYS
- cdev_init(&ptmx_cdev, &ptmx_fops);
- if (cdev_add(&ptmx_cdev, MKDEV(TTYAUX_MAJOR, 2), 1) ||
- register_chrdev_region(MKDEV(TTYAUX_MAJOR, 2), 1, "/dev/ptmx") < 0)
- panic("Couldn't register /dev/ptmx driver\n");
- devfs_mk_cdev(MKDEV(TTYAUX_MAJOR, 2), S_IFCHR|S_IRUGO|S_IWUGO, "ptmx");
- class_simple_device_add(tty_class, MKDEV(TTYAUX_MAJOR, 2), NULL,
"ptmx");
-#endif
-
-#ifdef CONFIG_VT
- if (console_use_vt) {
- cdev_init(&vc0_cdev, &console_fops);
- if (cdev_add(&vc0_cdev, MKDEV(TTY_MAJOR, 0), 1) ||
- register_chrdev_region(MKDEV(TTY_MAJOR, 0), 1,
- "/dev/vc/0") < 0)
- panic("Couldn't register /dev/tty0 driver\n");
- devfs_mk_cdev(MKDEV(TTY_MAJOR, 0), S_IFCHR|S_IRUSR|S_IWUSR,
- "vc/0");
- class_simple_device_add(tty_class, MKDEV(TTY_MAJOR, 0), NULL,
- "tty0");
-
- vty_init();
- }
-#endif
- return 0;
-}
-module_init(tty_init);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/Makefile
--- a/linux-2.6.11-xen-sparse/drivers/xen/Makefile Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,14 +0,0 @@
-
-
-obj-y += console/
-obj-y += evtchn/
-obj-y += balloon/
-obj-y += privcmd/
-obj-y += xenbus/
-
-obj-$(CONFIG_XEN_BLKDEV_BACKEND) += blkback/
-obj-$(CONFIG_XEN_NETDEV_BACKEND) += netback/
-obj-$(CONFIG_XEN_BLKDEV_FRONTEND) += blkfront/
-obj-$(CONFIG_XEN_NETDEV_FRONTEND) += netfront/
-obj-$(CONFIG_XEN_BLKDEV_TAP) += blktap/
-
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/balloon/Makefile
--- a/linux-2.6.11-xen-sparse/drivers/xen/balloon/Makefile Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,2 +0,0 @@
-
-obj-y += balloon.o
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/balloon/balloon.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/balloon/balloon.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,438 +0,0 @@
-/******************************************************************************
- * balloon.c
- *
- * Xen balloon driver - enables returning/claiming memory to/from Xen.
- *
- * Copyright (c) 2003, B Dragovic
- * Copyright (c) 2003-2004, M Williamson, K Fraser
- *
- * This file may be distributed separately from the Linux kernel, or
- * incorporated into other software packages, subject to the following license:
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this source file (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use, copy, modify,
- * merge, publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/errno.h>
-#include <linux/mm.h>
-#include <linux/mman.h>
-#include <linux/smp_lock.h>
-#include <linux/pagemap.h>
-#include <linux/bootmem.h>
-#include <linux/highmem.h>
-#include <linux/vmalloc.h>
-#include <asm-xen/xen_proc.h>
-#include <asm-xen/hypervisor.h>
-#include <asm-xen/ctrl_if.h>
-#include <asm-xen/balloon.h>
-#include <asm/pgalloc.h>
-#include <asm/pgtable.h>
-#include <asm/uaccess.h>
-#include <asm/tlb.h>
-#include <linux/list.h>
-
-static struct proc_dir_entry *balloon_pde;
-
-static DECLARE_MUTEX(balloon_mutex);
-spinlock_t balloon_lock = SPIN_LOCK_UNLOCKED;
-
-/* We aim for 'current allocation' == 'target allocation'. */
-static unsigned long current_pages;
-static unsigned long target_pages;
-
-/* We may hit the hard limit in Xen. If we do then we remember it. */
-static unsigned long hard_limit;
-
-/*
- * Drivers may alter the memory reservation independently, but they must
- * inform the balloon driver so that we can avoid hitting the hard limit.
- */
-static unsigned long driver_pages;
-
-/* List of ballooned pages, threaded through the mem_map array. */
-static LIST_HEAD(ballooned_pages);
-static unsigned long balloon_low, balloon_high;
-
-/* Main work function, always executed in process context. */
-static void balloon_process(void *unused);
-static DECLARE_WORK(balloon_worker, balloon_process, NULL);
-static struct timer_list balloon_timer;
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-/* Use the private and mapping fields of struct page as a list. */
-#define PAGE_TO_LIST(p) ( (struct list_head *)&p->private )
-#define LIST_TO_PAGE(l) ( list_entry( ((unsigned long *)l), \
- struct page, private ) )
-#define UNLIST_PAGE(p) do { list_del(PAGE_TO_LIST(p)); \
- p->mapping = NULL; \
- p->private = 0; } while(0)
-#else
-/* There's a dedicated list field in struct page we can use. */
-#define PAGE_TO_LIST(p) ( &p->list )
-#define LIST_TO_PAGE(l) ( list_entry(l, struct page, list) )
-#define UNLIST_PAGE(p) ( list_del(&p->list) )
-#define pte_offset_kernel pte_offset
-#define pud_t pgd_t
-#define pud_offset(d, va) d
-#define pud_none(d) 0
-#define pud_bad(d) 0
-#define subsys_initcall(_fn) __initcall(_fn)
-#define pfn_to_page(_pfn) (mem_map + (_pfn))
-#endif
-
-#define IPRINTK(fmt, args...) \
- printk(KERN_INFO "xen_mem: " fmt, ##args)
-#define WPRINTK(fmt, args...) \
- printk(KERN_WARNING "xen_mem: " fmt, ##args)
-
-/* balloon_append: add the given page to the balloon. */
-static void balloon_append(struct page *page)
-{
- /* Low memory is re-populated first, so highmem pages go at list tail. */
- if ( PageHighMem(page) )
- {
- list_add_tail(PAGE_TO_LIST(page), &ballooned_pages);
- balloon_high++;
- }
- else
- {
- list_add(PAGE_TO_LIST(page), &ballooned_pages);
- balloon_low++;
- }
-}
-
-/* balloon_retrieve: rescue a page from the balloon, if it is not empty. */
-static struct page *balloon_retrieve(void)
-{
- struct page *page;
-
- if ( list_empty(&ballooned_pages) )
- return NULL;
-
- page = LIST_TO_PAGE(ballooned_pages.next);
- UNLIST_PAGE(page);
-
- if ( PageHighMem(page) )
- balloon_high--;
- else
- balloon_low--;
-
- return page;
-}
-
-static void balloon_alarm(unsigned long unused)
-{
- schedule_work(&balloon_worker);
-}
-
-static unsigned long current_target(void)
-{
- unsigned long target = min(target_pages, hard_limit);
- if ( target > (current_pages + balloon_low + balloon_high) )
- target = current_pages + balloon_low + balloon_high;
- return target;
-}
-
-/*
- * We avoid multiple worker processes conflicting via the balloon mutex.
- * We may of course race updates of the target counts (which are protected
- * by the balloon lock), or with changes to the Xen hard limit, but we will
- * recover from these in time.
- */
-static void balloon_process(void *unused)
-{
- unsigned long *mfn_list, pfn, i, flags;
- struct page *page;
- long credit, debt, rc;
- void *v;
-
- down(&balloon_mutex);
-
- retry:
- mfn_list = NULL;
-
- if ( (credit = current_target() - current_pages) > 0 )
- {
- mfn_list = (unsigned long *)vmalloc(credit * sizeof(*mfn_list));
- if ( mfn_list == NULL )
- goto out;
-
- balloon_lock(flags);
- rc = HYPERVISOR_dom_mem_op(
- MEMOP_increase_reservation, mfn_list, credit, 0);
- balloon_unlock(flags);
- if ( rc < credit )
- {
- /* We hit the Xen hard limit: reprobe. */
- if ( HYPERVISOR_dom_mem_op(
- MEMOP_decrease_reservation, mfn_list, rc, 0) != rc )
- BUG();
- hard_limit = current_pages + rc - driver_pages;
- vfree(mfn_list);
- goto retry;
- }
-
- for ( i = 0; i < credit; i++ )
- {
- if ( (page = balloon_retrieve()) == NULL )
- BUG();
-
- pfn = page - mem_map;
- if ( phys_to_machine_mapping[pfn] != INVALID_P2M_ENTRY )
- BUG();
-
- /* Update P->M and M->P tables. */
- phys_to_machine_mapping[pfn] = mfn_list[i];
- xen_machphys_update(mfn_list[i], pfn);
-
- /* Link back into the page tables if it's not a highmem page. */
- if ( pfn < max_low_pfn )
- {
- HYPERVISOR_update_va_mapping(
- (unsigned long)__va(pfn << PAGE_SHIFT),
- __pte_ma((mfn_list[i] << PAGE_SHIFT) |
- pgprot_val(PAGE_KERNEL)),
- 0);
- }
-
- /* Finally, relinquish the memory back to the system allocator. */
- ClearPageReserved(page);
- set_page_count(page, 1);
- __free_page(page);
- }
-
- current_pages += credit;
- }
- else if ( credit < 0 )
- {
- debt = -credit;
-
- mfn_list = (unsigned long *)vmalloc(debt * sizeof(*mfn_list));
- if ( mfn_list == NULL )
- goto out;
-
- for ( i = 0; i < debt; i++ )
- {
- if ( (page = alloc_page(GFP_HIGHUSER)) == NULL )
- {
- debt = i;
- break;
- }
-
- pfn = page - mem_map;
- mfn_list[i] = phys_to_machine_mapping[pfn];
-
- if ( !PageHighMem(page) )
- {
- v = phys_to_virt(pfn << PAGE_SHIFT);
- scrub_pages(v, 1);
- HYPERVISOR_update_va_mapping(
- (unsigned long)v, __pte_ma(0), 0);
- }
-#ifdef CONFIG_XEN_SCRUB_PAGES
- else
- {
- v = kmap(page);
- scrub_pages(v, 1);
- kunmap(page);
- }
-#endif
- }
-
- /* Ensure that ballooned highmem pages don't have cached mappings. */
- kmap_flush_unused();
- flush_tlb_all();
-
- /* No more mappings: invalidate pages in P2M and add to balloon. */
- for ( i = 0; i < debt; i++ )
- {
- pfn = mfn_to_pfn(mfn_list[i]);
- phys_to_machine_mapping[pfn] = INVALID_P2M_ENTRY;
- balloon_append(pfn_to_page(pfn));
- }
-
- if ( HYPERVISOR_dom_mem_op(
- MEMOP_decrease_reservation, mfn_list, debt, 0) != debt )
- BUG();
-
- current_pages -= debt;
- }
-
- out:
- if ( mfn_list != NULL )
- vfree(mfn_list);
-
- /* Schedule more work if there is some still to be done. */
- if ( current_target() != current_pages )
- mod_timer(&balloon_timer, jiffies + HZ);
-
- up(&balloon_mutex);
-}
-
-/* Resets the Xen limit, sets new target, and kicks off processing. */
-static void set_new_target(unsigned long target)
-{
- /* No need for lock. Not read-modify-write updates. */
- hard_limit = ~0UL;
- target_pages = target;
- schedule_work(&balloon_worker);
-}
-
-static void balloon_ctrlif_rx(ctrl_msg_t *msg, unsigned long id)
-{
- switch ( msg->subtype )
- {
- case CMSG_MEM_REQUEST_SET:
- {
- mem_request_t *req = (mem_request_t *)&msg->msg[0];
- set_new_target(req->target);
- req->status = 0;
- }
- break;
-
- default:
- msg->length = 0;
- break;
- }
-
- ctrl_if_send_response(msg);
-}
-
-static int balloon_write(struct file *file, const char __user *buffer,
- unsigned long count, void *data)
-{
- char memstring[64], *endchar;
- unsigned long long target_bytes;
-
- if ( !capable(CAP_SYS_ADMIN) )
- return -EPERM;
-
- if ( count <= 1 )
- return -EBADMSG; /* runt */
- if ( count > sizeof(memstring) )
- return -EFBIG; /* too long */
-
- if ( copy_from_user(memstring, buffer, count) )
- return -EFAULT;
- memstring[sizeof(memstring)-1] = '\0';
-
- target_bytes = memparse(memstring, &endchar);
- set_new_target(target_bytes >> PAGE_SHIFT);
-
- return count;
-}
-
-static int balloon_read(char *page, char **start, off_t off,
- int count, int *eof, void *data)
-{
- int len;
-
-#define K(_p) ((_p)<<(PAGE_SHIFT-10))
- len = sprintf(
- page,
- "Current allocation: %8lu kB\n"
- "Requested target: %8lu kB\n"
- "Low-mem balloon: %8lu kB\n"
- "High-mem balloon: %8lu kB\n"
- "Xen hard limit: ",
- K(current_pages), K(target_pages), K(balloon_low), K(balloon_high));
-
- if ( hard_limit != ~0UL )
- len += sprintf(
- page + len,
- "%8lu kB (inc. %8lu kB driver headroom)\n",
- K(hard_limit), K(driver_pages));
- else
- len += sprintf(
- page + len,
- " ??? kB\n");
-
- *eof = 1;
- return len;
-}
-
-static int __init balloon_init(void)
-{
- unsigned long pfn;
- struct page *page;
-
- IPRINTK("Initialising balloon driver.\n");
-
- current_pages = min(xen_start_info.nr_pages, max_pfn);
- target_pages = current_pages;
- balloon_low = 0;
- balloon_high = 0;
- driver_pages = 0UL;
- hard_limit = ~0UL;
-
- init_timer(&balloon_timer);
- balloon_timer.data = 0;
- balloon_timer.function = balloon_alarm;
-
- if ( (balloon_pde = create_xen_proc_entry("balloon", 0644)) == NULL )
- {
- WPRINTK("Unable to create /proc/xen/balloon.\n");
- return -1;
- }
-
- balloon_pde->read_proc = balloon_read;
- balloon_pde->write_proc = balloon_write;
-
- (void)ctrl_if_register_receiver(CMSG_MEM_REQUEST, balloon_ctrlif_rx, 0);
-
- /* Initialise the balloon with excess memory space. */
- for ( pfn = xen_start_info.nr_pages; pfn < max_pfn; pfn++ )
- {
- page = &mem_map[pfn];
- if ( !PageReserved(page) )
- balloon_append(page);
- }
-
- return 0;
-}
-
-subsys_initcall(balloon_init);
-
-void balloon_update_driver_allowance(long delta)
-{
- unsigned long flags;
- balloon_lock(flags);
- driver_pages += delta; /* non-atomic update */
- balloon_unlock(flags);
-}
-
-void balloon_put_pages(unsigned long *mfn_list, unsigned long nr_mfns)
-{
- unsigned long flags;
-
- balloon_lock(flags);
- if ( HYPERVISOR_dom_mem_op(MEMOP_decrease_reservation,
- mfn_list, nr_mfns, 0) != nr_mfns )
- BUG();
- current_pages -= nr_mfns; /* non-atomic update */
- balloon_unlock(flags);
-
- schedule_work(&balloon_worker);
-}
-
-EXPORT_SYMBOL(balloon_update_driver_allowance);
-EXPORT_SYMBOL(balloon_put_pages);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/blkback/Makefile
--- a/linux-2.6.11-xen-sparse/drivers/xen/blkback/Makefile Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,2 +0,0 @@
-
-obj-y := blkback.o control.o interface.o vbd.o
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/blkback/blkback.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/blkback/blkback.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,756 +0,0 @@
-/******************************************************************************
- * arch/xen/drivers/blkif/backend/main.c
- *
- * Back-end of the driver for virtual block devices. This portion of the
- * driver exports a 'unified' block-device interface that can be accessed
- * by any operating system that implements a compatible front end. A
- * reference front-end implementation can be found in:
- * arch/xen/drivers/blkif/frontend
- *
- * Copyright (c) 2003-2004, Keir Fraser & Steve Hand
- * Copyright (c) 2005, Christopher Clark
- */
-
-#include "common.h"
-#include <asm-xen/evtchn.h>
-#ifdef CONFIG_XEN_BLKDEV_GRANT
-#include <asm-xen/xen-public/grant_table.h>
-#endif
-
-/*
- * These are rather arbitrary. They are fairly large because adjacent requests
- * pulled from a communication ring are quite likely to end up being part of
- * the same scatter/gather request at the disc.
- *
- * ** TRY INCREASING 'MAX_PENDING_REQS' IF WRITE SPEEDS SEEM TOO LOW **
- * This will increase the chances of being able to write whole tracks.
- * 64 should be enough to keep us competitive with Linux.
- */
-#define MAX_PENDING_REQS 64
-#define BATCH_PER_DOMAIN 16
-
-static unsigned long mmap_vstart;
-#define MMAP_PAGES \
- (MAX_PENDING_REQS * BLKIF_MAX_SEGMENTS_PER_REQUEST)
-#define MMAP_VADDR(_req,_seg) \
- (mmap_vstart + \
- ((_req) * BLKIF_MAX_SEGMENTS_PER_REQUEST * PAGE_SIZE) + \
- ((_seg) * PAGE_SIZE))
-
-/*
- * Each outstanding request that we've passed to the lower device layers has a
- * 'pending_req' allocated to it. Each buffer_head that completes decrements
- * the pendcnt towards zero. When it hits zero, the specified domain has a
- * response queued for it, with the saved 'id' passed back.
- */
-typedef struct {
- blkif_t *blkif;
- unsigned long id;
- int nr_pages;
- atomic_t pendcnt;
- unsigned short operation;
- int status;
-} pending_req_t;
-
-/*
- * We can't allocate pending_req's in order, since they may complete out of
- * order. We therefore maintain an allocation ring. This ring also indicates
- * when enough work has been passed down -- at that point the allocation ring
- * will be empty.
- */
-static pending_req_t pending_reqs[MAX_PENDING_REQS];
-static unsigned char pending_ring[MAX_PENDING_REQS];
-static spinlock_t pend_prod_lock = SPIN_LOCK_UNLOCKED;
-/* NB. We use a different index type to differentiate from shared blk rings. */
-typedef unsigned int PEND_RING_IDX;
-#define MASK_PEND_IDX(_i) ((_i)&(MAX_PENDING_REQS-1))
-static PEND_RING_IDX pending_prod, pending_cons;
-#define NR_PENDING_REQS (MAX_PENDING_REQS - pending_prod + pending_cons)
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
-static kmem_cache_t *buffer_head_cachep;
-#else
-static request_queue_t *plugged_queue;
-static inline void flush_plugged_queue(void)
-{
- request_queue_t *q = plugged_queue;
- if ( q != NULL )
- {
- if ( q->unplug_fn != NULL )
- q->unplug_fn(q);
- blk_put_queue(q);
- plugged_queue = NULL;
- }
-}
-#endif
-
-#ifdef CONFIG_XEN_BLKDEV_GRANT
-/* When using grant tables to map a frame for device access then the
- * handle returned must be used to unmap the frame. This is needed to
- * drop the ref count on the frame.
- */
-static u16 pending_grant_handles[MMAP_PAGES];
-#define pending_handle(_idx, _i) \
- (pending_grant_handles[((_idx) * BLKIF_MAX_SEGMENTS_PER_REQUEST) + (_i)])
-#define BLKBACK_INVALID_HANDLE (0xFFFF)
-#endif
-
-#ifdef CONFIG_XEN_BLKDEV_TAP_BE
-/*
- * If the tap driver is used, we may get pages belonging to either the tap
- * or (more likely) the real frontend. The backend must specify which domain
- * a given page belongs to in update_va_mapping though. For the moment,
- * the tap rewrites the ID field of the request to contain the request index
- * and the id of the real front end domain.
- */
-#define BLKTAP_COOKIE 0xbeadfeed
-static inline domid_t ID_TO_DOM(unsigned long id) { return (id >> 16); }
-#endif
-
-static int do_block_io_op(blkif_t *blkif, int max_to_do);
-static void dispatch_probe(blkif_t *blkif, blkif_request_t *req);
-static void dispatch_rw_block_io(blkif_t *blkif, blkif_request_t *req);
-static void make_response(blkif_t *blkif, unsigned long id,
- unsigned short op, int st);
-
-static void fast_flush_area(int idx, int nr_pages)
-{
-#ifdef CONFIG_XEN_BLKDEV_GRANT
- struct gnttab_unmap_grant_ref unmap[BLKIF_MAX_SEGMENTS_PER_REQUEST];
- unsigned int i, invcount = 0;
- u16 handle;
-
- for ( i = 0; i < nr_pages; i++ )
- {
- if ( BLKBACK_INVALID_HANDLE != ( handle = pending_handle(idx, i) ) )
- {
- unmap[i].host_virt_addr = MMAP_VADDR(idx, i);
- unmap[i].dev_bus_addr = 0;
- unmap[i].handle = handle;
- pending_handle(idx, i) = BLKBACK_INVALID_HANDLE;
- invcount++;
- }
- }
- if ( unlikely(HYPERVISOR_grant_table_op(
- GNTTABOP_unmap_grant_ref, unmap, invcount)))
- BUG();
-#else
-
- multicall_entry_t mcl[BLKIF_MAX_SEGMENTS_PER_REQUEST];
- int i;
-
- for ( i = 0; i < nr_pages; i++ )
- {
- MULTI_update_va_mapping(mcl+i, MMAP_VADDR(idx, i),
- __pte(0), 0);
- }
-
- mcl[nr_pages-1].args[2] = UVMF_TLB_FLUSH|UVMF_ALL;
- if ( unlikely(HYPERVISOR_multicall(mcl, nr_pages) != 0) )
- BUG();
-#endif
-}
-
-
-/******************************************************************
- * BLOCK-DEVICE SCHEDULER LIST MAINTENANCE
- */
-
-static struct list_head blkio_schedule_list;
-static spinlock_t blkio_schedule_list_lock;
-
-static int __on_blkdev_list(blkif_t *blkif)
-{
- return blkif->blkdev_list.next != NULL;
-}
-
-static void remove_from_blkdev_list(blkif_t *blkif)
-{
- unsigned long flags;
- if ( !__on_blkdev_list(blkif) ) return;
- spin_lock_irqsave(&blkio_schedule_list_lock, flags);
- if ( __on_blkdev_list(blkif) )
- {
- list_del(&blkif->blkdev_list);
- blkif->blkdev_list.next = NULL;
- blkif_put(blkif);
- }
- spin_unlock_irqrestore(&blkio_schedule_list_lock, flags);
-}
-
-static void add_to_blkdev_list_tail(blkif_t *blkif)
-{
- unsigned long flags;
- if ( __on_blkdev_list(blkif) ) return;
- spin_lock_irqsave(&blkio_schedule_list_lock, flags);
- if ( !__on_blkdev_list(blkif) && (blkif->status == CONNECTED) )
- {
- list_add_tail(&blkif->blkdev_list, &blkio_schedule_list);
- blkif_get(blkif);
- }
- spin_unlock_irqrestore(&blkio_schedule_list_lock, flags);
-}
-
-
-/******************************************************************
- * SCHEDULER FUNCTIONS
- */
-
-static DECLARE_WAIT_QUEUE_HEAD(blkio_schedule_wait);
-
-static int blkio_schedule(void *arg)
-{
- DECLARE_WAITQUEUE(wq, current);
-
- blkif_t *blkif;
- struct list_head *ent;
-
- daemonize(
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
- "xenblkd"
-#endif
- );
-
- for ( ; ; )
- {
- /* Wait for work to do. */
- add_wait_queue(&blkio_schedule_wait, &wq);
- set_current_state(TASK_INTERRUPTIBLE);
- if ( (NR_PENDING_REQS == MAX_PENDING_REQS) ||
- list_empty(&blkio_schedule_list) )
- schedule();
- __set_current_state(TASK_RUNNING);
- remove_wait_queue(&blkio_schedule_wait, &wq);
-
- /* Queue up a batch of requests. */
- while ( (NR_PENDING_REQS < MAX_PENDING_REQS) &&
- !list_empty(&blkio_schedule_list) )
- {
- ent = blkio_schedule_list.next;
- blkif = list_entry(ent, blkif_t, blkdev_list);
- blkif_get(blkif);
- remove_from_blkdev_list(blkif);
- if ( do_block_io_op(blkif, BATCH_PER_DOMAIN) )
- add_to_blkdev_list_tail(blkif);
- blkif_put(blkif);
- }
-
- /* Push the batch through to disc. */
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
- run_task_queue(&tq_disk);
-#else
- flush_plugged_queue();
-#endif
- }
-}
-
-static void maybe_trigger_blkio_schedule(void)
-{
- /*
- * Needed so that two processes, who together make the following predicate
- * true, don't both read stale values and evaluate the predicate
- * incorrectly. Incredibly unlikely to stall the scheduler on x86, but...
- */
- smp_mb();
-
- if ( (NR_PENDING_REQS < (MAX_PENDING_REQS/2)) &&
- !list_empty(&blkio_schedule_list) )
- wake_up(&blkio_schedule_wait);
-}
-
-
-
-/******************************************************************
- * COMPLETION CALLBACK -- Called as bh->b_end_io()
- */
-
-static void __end_block_io_op(pending_req_t *pending_req, int uptodate)
-{
- unsigned long flags;
-
- /* An error fails the entire request. */
- if ( !uptodate )
- {
- DPRINTK("Buffer not up-to-date at end of operation\n");
- pending_req->status = BLKIF_RSP_ERROR;
- }
-
- if ( atomic_dec_and_test(&pending_req->pendcnt) )
- {
- int pending_idx = pending_req - pending_reqs;
- fast_flush_area(pending_idx, pending_req->nr_pages);
- make_response(pending_req->blkif, pending_req->id,
- pending_req->operation, pending_req->status);
- blkif_put(pending_req->blkif);
- spin_lock_irqsave(&pend_prod_lock, flags);
- pending_ring[MASK_PEND_IDX(pending_prod++)] = pending_idx;
- spin_unlock_irqrestore(&pend_prod_lock, flags);
- maybe_trigger_blkio_schedule();
- }
-}
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
-static void end_block_io_op(struct buffer_head *bh, int uptodate)
-{
- __end_block_io_op(bh->b_private, uptodate);
- kmem_cache_free(buffer_head_cachep, bh);
-}
-#else
-static int end_block_io_op(struct bio *bio, unsigned int done, int error)
-{
- if ( bio->bi_size != 0 )
- return 1;
- __end_block_io_op(bio->bi_private, !error);
- bio_put(bio);
- return error;
-}
-#endif
-
-
-/******************************************************************************
- * NOTIFICATION FROM GUEST OS.
- */
-
-irqreturn_t blkif_be_int(int irq, void *dev_id, struct pt_regs *regs)
-{
- blkif_t *blkif = dev_id;
- add_to_blkdev_list_tail(blkif);
- maybe_trigger_blkio_schedule();
- return IRQ_HANDLED;
-}
-
-
-
-/******************************************************************
- * DOWNWARD CALLS -- These interface with the block-device layer proper.
- */
-
-static int do_block_io_op(blkif_t *blkif, int max_to_do)
-{
- blkif_back_ring_t *blk_ring = &blkif->blk_ring;
- blkif_request_t *req;
- RING_IDX i, rp;
- int more_to_do = 0;
-
- rp = blk_ring->sring->req_prod;
- rmb(); /* Ensure we see queued requests up to 'rp'. */
-
- for ( i = blk_ring->req_cons;
- (i != rp) && !RING_REQUEST_CONS_OVERFLOW(blk_ring, i);
- i++ )
- {
- if ( (max_to_do-- == 0) || (NR_PENDING_REQS == MAX_PENDING_REQS) )
- {
- more_to_do = 1;
- break;
- }
-
- req = RING_GET_REQUEST(blk_ring, i);
- switch ( req->operation )
- {
- case BLKIF_OP_READ:
- case BLKIF_OP_WRITE:
- dispatch_rw_block_io(blkif, req);
- break;
-
- case BLKIF_OP_PROBE:
- dispatch_probe(blkif, req);
- break;
-
- default:
- DPRINTK("error: unknown block io operation [%d]\n",
- req->operation);
- make_response(blkif, req->id, req->operation, BLKIF_RSP_ERROR);
- break;
- }
- }
-
- blk_ring->req_cons = i;
- return more_to_do;
-}
-
-static void dispatch_probe(blkif_t *blkif, blkif_request_t *req)
-{
- int rsp = BLKIF_RSP_ERROR;
- int pending_idx = pending_ring[MASK_PEND_IDX(pending_cons)];
-
- /* We expect one buffer only. */
- if ( unlikely(req->nr_segments != 1) )
- goto out;
-
- /* Make sure the buffer is page-sized. */
- if ( (blkif_first_sect(req->frame_and_sects[0]) != 0) ||
- (blkif_last_sect(req->frame_and_sects[0]) != 7) )
- goto out;
-
-#ifdef CONFIG_XEN_BLKDEV_GRANT
- {
- struct gnttab_map_grant_ref map;
-
- map.host_virt_addr = MMAP_VADDR(pending_idx, 0);
- map.flags = GNTMAP_host_map;
- map.ref = blkif_gref_from_fas(req->frame_and_sects[0]);
- map.dom = blkif->domid;
-
- if ( unlikely(HYPERVISOR_grant_table_op(
- GNTTABOP_map_grant_ref, &map, 1)))
- BUG();
-
- if ( map.handle < 0 )
- goto out;
-
- pending_handle(pending_idx, 0) = map.handle;
- }
-#else /* else CONFIG_XEN_BLKDEV_GRANT */
-
-#ifdef CONFIG_XEN_BLKDEV_TAP_BE
- /* Grab the real frontend out of the probe message. */
- if (req->frame_and_sects[1] == BLKTAP_COOKIE)
- blkif->is_blktap = 1;
-#endif
-
-
-#ifdef CONFIG_XEN_BLKDEV_TAP_BE
- if ( HYPERVISOR_update_va_mapping_otherdomain(
- MMAP_VADDR(pending_idx, 0),
- (pte_t) { (req->frame_and_sects[0] & PAGE_MASK) | __PAGE_KERNEL },
- 0, (blkif->is_blktap ? ID_TO_DOM(req->id) : blkif->domid) ) )
-
- goto out;
-#else
- if ( HYPERVISOR_update_va_mapping_otherdomain(
- MMAP_VADDR(pending_idx, 0),
- (pte_t) { (req->frame_and_sects[0] & PAGE_MASK) | __PAGE_KERNEL },
- 0, blkif->domid) )
-
- goto out;
-#endif
-#endif /* endif CONFIG_XEN_BLKDEV_GRANT */
-
- rsp = vbd_probe(blkif, (vdisk_t *)MMAP_VADDR(pending_idx, 0),
- PAGE_SIZE / sizeof(vdisk_t));
-
- out:
- fast_flush_area(pending_idx, 1);
- make_response(blkif, req->id, req->operation, rsp);
-}
-
-static void dispatch_rw_block_io(blkif_t *blkif, blkif_request_t *req)
-{
- extern void ll_rw_block(int rw, int nr, struct buffer_head * bhs[]);
- int operation = (req->operation == BLKIF_OP_WRITE) ? WRITE : READ;
- unsigned long fas = 0;
- int i, pending_idx = pending_ring[MASK_PEND_IDX(pending_cons)];
- pending_req_t *pending_req;
-#ifdef CONFIG_XEN_BLKDEV_GRANT
- struct gnttab_map_grant_ref map[BLKIF_MAX_SEGMENTS_PER_REQUEST];
-#else
- unsigned long remap_prot;
- multicall_entry_t mcl[BLKIF_MAX_SEGMENTS_PER_REQUEST];
-#endif
- struct phys_req preq;
- struct {
- unsigned long buf; unsigned int nsec;
- } seg[BLKIF_MAX_SEGMENTS_PER_REQUEST];
- unsigned int nseg;
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
- struct buffer_head *bh;
-#else
- struct bio *bio = NULL, *biolist[BLKIF_MAX_SEGMENTS_PER_REQUEST];
- int nbio = 0;
- request_queue_t *q;
-#endif
-
- /* Check that number of segments is sane. */
- nseg = req->nr_segments;
- if ( unlikely(nseg == 0) ||
- unlikely(nseg > BLKIF_MAX_SEGMENTS_PER_REQUEST) )
- {
- DPRINTK("Bad number of segments in request (%d)\n", nseg);
- goto bad_descriptor;
- }
-
- preq.dev = req->device;
- preq.sector_number = req->sector_number;
- preq.nr_sects = 0;
-
-#ifdef CONFIG_XEN_BLKDEV_GRANT
- for ( i = 0; i < nseg; i++ )
- {
- fas = req->frame_and_sects[i];
- seg[i].nsec = blkif_last_sect(fas) - blkif_first_sect(fas) + 1;
-
- if ( seg[i].nsec <= 0 )
- goto bad_descriptor;
- preq.nr_sects += seg[i].nsec;
-
- map[i].host_virt_addr = MMAP_VADDR(pending_idx, i);
- map[i].dom = blkif->domid;
- map[i].ref = blkif_gref_from_fas(fas);
- map[i].flags = GNTMAP_host_map;
- if ( operation == WRITE )
- map[i].flags |= GNTMAP_readonly;
- }
-
- if ( unlikely(HYPERVISOR_grant_table_op(
- GNTTABOP_map_grant_ref, map, nseg)))
- BUG();
-
- for ( i = 0; i < nseg; i++ )
- {
- if ( unlikely(map[i].handle < 0) )
- {
- DPRINTK("invalid buffer -- could not remap it\n");
- fast_flush_area(pending_idx, nseg);
- goto bad_descriptor;
- }
-
- phys_to_machine_mapping[__pa(MMAP_VADDR(pending_idx, i))>>PAGE_SHIFT] =
- FOREIGN_FRAME(map[i].dev_bus_addr);
-
- pending_handle(pending_idx, i) = map[i].handle;
- }
-#endif
-
- for ( i = 0; i < nseg; i++ )
- {
- fas = req->frame_and_sects[i];
-#ifdef CONFIG_XEN_BLKDEV_GRANT
- seg[i].buf = (map[i].dev_bus_addr << PAGE_SHIFT) |
- (blkif_first_sect(fas) << 9);
-#else
- seg[i].buf = (fas & PAGE_MASK) | (blkif_first_sect(fas) << 9);
- seg[i].nsec = blkif_last_sect(fas) - blkif_first_sect(fas) + 1;
- if ( seg[i].nsec <= 0 )
- goto bad_descriptor;
- preq.nr_sects += seg[i].nsec;
-#endif
- }
-
- if ( vbd_translate(&preq, blkif, operation) != 0 )
- {
- DPRINTK("access denied: %s of [%llu,%llu] on dev=%04x\n",
- operation == READ ? "read" : "write", preq.sector_number,
- preq.sector_number + preq.nr_sects, preq.dev);
- goto bad_descriptor;
- }
-
-#ifndef CONFIG_XEN_BLKDEV_GRANT
- if ( operation == READ )
- remap_prot = _PAGE_PRESENT|_PAGE_DIRTY|_PAGE_ACCESSED|_PAGE_RW;
- else
- remap_prot = _PAGE_PRESENT|_PAGE_DIRTY|_PAGE_ACCESSED;
-
- for ( i = 0; i < nseg; i++ )
- {
- MULTI_update_va_mapping_otherdomain(
- mcl+i, MMAP_VADDR(pending_idx, i),
- pfn_pte_ma(seg[i].buf >> PAGE_SHIFT, remap_prot),
- 0, blkif->domid);
-#ifdef CONFIG_XEN_BLKDEV_TAP_BE
- if ( blkif->is_blktap )
- mcl[i].args[3] = ID_TO_DOM(req->id);
-#endif
- phys_to_machine_mapping[__pa(MMAP_VADDR(pending_idx, i))>>PAGE_SHIFT] =
- FOREIGN_FRAME(seg[i].buf >> PAGE_SHIFT);
- }
-
- BUG_ON(HYPERVISOR_multicall(mcl, nseg) != 0);
-
- for ( i = 0; i < nseg; i++ )
- {
- if ( unlikely(mcl[i].result != 0) )
- {
- DPRINTK("invalid buffer -- could not remap it\n");
- fast_flush_area(pending_idx, nseg);
- goto bad_descriptor;
- }
- }
-#endif /* end ifndef CONFIG_XEN_BLKDEV_GRANT */
-
- pending_req = &pending_reqs[pending_idx];
- pending_req->blkif = blkif;
- pending_req->id = req->id;
- pending_req->operation = operation;
- pending_req->status = BLKIF_RSP_OKAY;
- pending_req->nr_pages = nseg;
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
-
- atomic_set(&pending_req->pendcnt, nseg);
- pending_cons++;
- blkif_get(blkif);
-
- for ( i = 0; i < nseg; i++ )
- {
- bh = kmem_cache_alloc(buffer_head_cachep, GFP_KERNEL);
- if ( unlikely(bh == NULL) )
- {
- __end_block_io_op(pending_req, 0);
- continue;
- }
-
- memset(bh, 0, sizeof (struct buffer_head));
-
- init_waitqueue_head(&bh->b_wait);
- bh->b_size = seg[i].nsec << 9;
- bh->b_dev = preq.dev;
- bh->b_rdev = preq.dev;
- bh->b_rsector = (unsigned long)preq.sector_number;
- bh->b_data = (char *)MMAP_VADDR(pending_idx, i) +
- (seg[i].buf & ~PAGE_MASK);
- bh->b_page = virt_to_page(MMAP_VADDR(pending_idx, i));
- bh->b_end_io = end_block_io_op;
- bh->b_private = pending_req;
-
- bh->b_state = (1 << BH_Mapped) | (1 << BH_Lock) |
- (1 << BH_Req) | (1 << BH_Launder);
- if ( operation == WRITE )
- bh->b_state |= (1 << BH_JBD) | (1 << BH_Req) | (1 << BH_Uptodate);
-
- atomic_set(&bh->b_count, 1);
-
- /* Dispatch a single request. We'll flush it to disc later. */
- generic_make_request(operation, bh);
-
- preq.sector_number += seg[i].nsec;
- }
-
-#else
-
- for ( i = 0; i < nseg; i++ )
- {
- if ( ((int)preq.sector_number|(int)seg[i].nsec) &
- ((bdev_hardsect_size(preq.bdev) >> 9) - 1) )
- {
- DPRINTK("Misaligned I/O request from domain %d", blkif->domid);
- goto cleanup_and_fail;
- }
-
- while ( (bio == NULL) ||
- (bio_add_page(bio,
- virt_to_page(MMAP_VADDR(pending_idx, i)),
- seg[i].nsec << 9,
- seg[i].buf & ~PAGE_MASK) == 0) )
- {
- bio = biolist[nbio++] = bio_alloc(GFP_KERNEL, nseg-i);
- if ( unlikely(bio == NULL) )
- {
- cleanup_and_fail:
- for ( i = 0; i < (nbio-1); i++ )
- bio_put(biolist[i]);
- fast_flush_area(pending_idx, nseg);
- goto bad_descriptor;
- }
-
- bio->bi_bdev = preq.bdev;
- bio->bi_private = pending_req;
- bio->bi_end_io = end_block_io_op;
- bio->bi_sector = preq.sector_number;
- }
-
- preq.sector_number += seg[i].nsec;
- }
-
- if ( (q = bdev_get_queue(bio->bi_bdev)) != plugged_queue )
- {
- flush_plugged_queue();
- blk_get_queue(q);
- plugged_queue = q;
- }
-
- atomic_set(&pending_req->pendcnt, nbio);
- pending_cons++;
- blkif_get(blkif);
-
- for ( i = 0; i < nbio; i++ )
- submit_bio(operation, biolist[i]);
-
-#endif
-
- return;
-
- bad_descriptor:
- make_response(blkif, req->id, req->operation, BLKIF_RSP_ERROR);
-}
-
-
-
-/******************************************************************
- * MISCELLANEOUS SETUP / TEARDOWN / DEBUGGING
- */
-
-
-static void make_response(blkif_t *blkif, unsigned long id,
- unsigned short op, int st)
-{
- blkif_response_t *resp;
- unsigned long flags;
- blkif_back_ring_t *blk_ring = &blkif->blk_ring;
-
- /* Place on the response ring for the relevant domain. */
- spin_lock_irqsave(&blkif->blk_ring_lock, flags);
- resp = RING_GET_RESPONSE(blk_ring, blk_ring->rsp_prod_pvt);
- resp->id = id;
- resp->operation = op;
- resp->status = st;
- wmb(); /* Ensure other side can see the response fields. */
- blk_ring->rsp_prod_pvt++;
- RING_PUSH_RESPONSES(blk_ring);
- spin_unlock_irqrestore(&blkif->blk_ring_lock, flags);
-
- /* Kick the relevant domain. */
- notify_via_evtchn(blkif->evtchn);
-}
-
-void blkif_deschedule(blkif_t *blkif)
-{
- remove_from_blkdev_list(blkif);
-}
-
-static int __init blkif_init(void)
-{
- int i;
-
- if ( !(xen_start_info.flags & SIF_INITDOMAIN) &&
- !(xen_start_info.flags & SIF_BLK_BE_DOMAIN) )
- return 0;
-
- blkif_interface_init();
-
- if ( (mmap_vstart = allocate_empty_lowmem_region(MMAP_PAGES)) == 0 )
- BUG();
-
- pending_cons = 0;
- pending_prod = MAX_PENDING_REQS;
- memset(pending_reqs, 0, sizeof(pending_reqs));
- for ( i = 0; i < MAX_PENDING_REQS; i++ )
- pending_ring[i] = i;
-
- spin_lock_init(&blkio_schedule_list_lock);
- INIT_LIST_HEAD(&blkio_schedule_list);
-
- if ( kernel_thread(blkio_schedule, 0, CLONE_FS | CLONE_FILES) < 0 )
- BUG();
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
- buffer_head_cachep = kmem_cache_create(
- "buffer_head_cache", sizeof(struct buffer_head),
- 0, SLAB_HWCACHE_ALIGN, NULL, NULL);
-#endif
-
- blkif_ctrlif_init();
-
-#ifdef CONFIG_XEN_BLKDEV_GRANT
- memset( pending_grant_handles, BLKBACK_INVALID_HANDLE, MMAP_PAGES );
- printk(KERN_ALERT "Blkif backend is using grant tables.\n");
-#endif
-
-#ifdef CONFIG_XEN_BLKDEV_TAP_BE
- printk(KERN_ALERT "NOTE: Blkif backend is running with tap support on!\n");
-#endif
-
- return 0;
-}
-
-__initcall(blkif_init);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/blkback/common.h
--- a/linux-2.6.11-xen-sparse/drivers/xen/blkback/common.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,109 +0,0 @@
-
-#ifndef __BLKIF__BACKEND__COMMON_H__
-#define __BLKIF__BACKEND__COMMON_H__
-
-#include <linux/config.h>
-#include <linux/version.h>
-#include <linux/module.h>
-#include <linux/rbtree.h>
-#include <linux/interrupt.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <asm/io.h>
-#include <asm/setup.h>
-#include <asm/pgalloc.h>
-#include <asm-xen/ctrl_if.h>
-#include <asm-xen/hypervisor.h>
-#include <asm-xen/xen-public/io/blkif.h>
-#include <asm-xen/xen-public/io/ring.h>
-
-#if 0
-#define ASSERT(_p) \
- if ( !(_p) ) { printk("Assertion '%s' failed, line %d, file %s", #_p , \
- __LINE__, __FILE__); *(int*)0=0; }
-#define DPRINTK(_f, _a...) printk(KERN_ALERT "(file=%s, line=%d) " _f, \
- __FILE__ , __LINE__ , ## _a )
-#else
-#define ASSERT(_p) ((void)0)
-#define DPRINTK(_f, _a...) ((void)0)
-#endif
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-typedef struct rb_root rb_root_t;
-typedef struct rb_node rb_node_t;
-#else
-struct block_device;
-#endif
-
-typedef struct blkif_st {
- /* Unique identifier for this interface. */
- domid_t domid;
- unsigned int handle;
- /* Physical parameters of the comms window. */
- unsigned long shmem_frame;
- unsigned int evtchn;
- int irq;
- /* Comms information. */
- blkif_back_ring_t blk_ring;
- /* VBDs attached to this interface. */
- rb_root_t vbd_rb; /* Mapping from 16-bit vdevices to VBDs.*/
- spinlock_t vbd_lock; /* Protects VBD mapping. */
- /* Private fields. */
- enum { DISCONNECTED, DISCONNECTING, CONNECTED } status;
- /*
- * DISCONNECT response is deferred until pending requests are ack'ed.
- * We therefore need to store the id from the original request.
- */
- u8 disconnect_rspid;
-#ifdef CONFIG_XEN_BLKDEV_TAP_BE
- /* Is this a blktap frontend */
- unsigned int is_blktap;
-#endif
- struct blkif_st *hash_next;
- struct list_head blkdev_list;
- spinlock_t blk_ring_lock;
- atomic_t refcnt;
-
- struct work_struct work;
-#ifdef CONFIG_XEN_BLKDEV_GRANT
- u16 shmem_handle;
- memory_t shmem_vaddr;
- grant_ref_t shmem_ref;
-#endif
-} blkif_t;
-
-void blkif_create(blkif_be_create_t *create);
-void blkif_destroy(blkif_be_destroy_t *destroy);
-void blkif_connect(blkif_be_connect_t *connect);
-int blkif_disconnect(blkif_be_disconnect_t *disconnect, u8 rsp_id);
-void blkif_disconnect_complete(blkif_t *blkif);
-blkif_t *blkif_find_by_handle(domid_t domid, unsigned int handle);
-#define blkif_get(_b) (atomic_inc(&(_b)->refcnt))
-#define blkif_put(_b) \
- do { \
- if ( atomic_dec_and_test(&(_b)->refcnt) ) \
- blkif_disconnect_complete(_b); \
- } while (0)
-
-void vbd_create(blkif_be_vbd_create_t *create);
-void vbd_destroy(blkif_be_vbd_destroy_t *delete);
-int vbd_probe(blkif_t *blkif, vdisk_t *vbd_info, int max_vbds);
-void destroy_all_vbds(blkif_t *blkif);
-
-struct phys_req {
- unsigned short dev;
- unsigned short nr_sects;
- struct block_device *bdev;
- blkif_sector_t sector_number;
-};
-
-int vbd_translate(struct phys_req *req, blkif_t *blkif, int operation);
-
-void blkif_interface_init(void);
-void blkif_ctrlif_init(void);
-
-void blkif_deschedule(blkif_t *blkif);
-
-irqreturn_t blkif_be_int(int irq, void *dev_id, struct pt_regs *regs);
-
-#endif /* __BLKIF__BACKEND__COMMON_H__ */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/blkback/control.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/blkback/control.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,61 +0,0 @@
-/******************************************************************************
- * arch/xen/drivers/blkif/backend/control.c
- *
- * Routines for interfacing with the control plane.
- *
- * Copyright (c) 2004, Keir Fraser
- */
-
-#include "common.h"
-
-static void blkif_ctrlif_rx(ctrl_msg_t *msg, unsigned long id)
-{
- DPRINTK("Received blkif backend message, subtype=%d\n", msg->subtype);
-
- switch ( msg->subtype )
- {
- case CMSG_BLKIF_BE_CREATE:
- blkif_create((blkif_be_create_t *)&msg->msg[0]);
- break;
- case CMSG_BLKIF_BE_DESTROY:
- blkif_destroy((blkif_be_destroy_t *)&msg->msg[0]);
- break;
- case CMSG_BLKIF_BE_CONNECT:
- blkif_connect((blkif_be_connect_t *)&msg->msg[0]);
- break;
- case CMSG_BLKIF_BE_DISCONNECT:
- if ( !blkif_disconnect((blkif_be_disconnect_t *)&msg->msg[0],msg->id) )
- return; /* Sending the response is deferred until later. */
- break;
- case CMSG_BLKIF_BE_VBD_CREATE:
- vbd_create((blkif_be_vbd_create_t *)&msg->msg[0]);
- break;
- case CMSG_BLKIF_BE_VBD_DESTROY:
- vbd_destroy((blkif_be_vbd_destroy_t *)&msg->msg[0]);
- break;
- default:
- DPRINTK("Parse error while reading message subtype %d, len %d\n",
- msg->subtype, msg->length);
- msg->length = 0;
- break;
- }
-
- ctrl_if_send_response(msg);
-}
-
-void blkif_ctrlif_init(void)
-{
- ctrl_msg_t cmsg;
- blkif_be_driver_status_t st;
-
- (void)ctrl_if_register_receiver(CMSG_BLKIF_BE, blkif_ctrlif_rx,
- CALLBACK_IN_BLOCKING_CONTEXT);
-
- /* Send a driver-UP notification to the domain controller. */
- cmsg.type = CMSG_BLKIF_BE;
- cmsg.subtype = CMSG_BLKIF_BE_DRIVER_STATUS;
- cmsg.length = sizeof(blkif_be_driver_status_t);
- st.status = BLKIF_DRIVER_STATUS_UP;
- memcpy(cmsg.msg, &st, sizeof(st));
- ctrl_if_send_message_block(&cmsg, NULL, 0, TASK_UNINTERRUPTIBLE);
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/blkback/vbd.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/blkback/vbd.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,295 +0,0 @@
-/******************************************************************************
- * blkback/vbd.c
- *
- * Routines for managing virtual block devices (VBDs).
- *
- * NOTE: vbd_lock protects updates to the rb_tree against concurrent lookups
- * in vbd_translate. All other lookups are implicitly protected because the
- * only caller (the control message dispatch routine) serializes the calls.
- *
- * Copyright (c) 2003-2005, Keir Fraser & Steve Hand
- */
-
-#include "common.h"
-
-struct vbd {
- blkif_vdev_t vdevice; /* what the domain refers to this vbd as */
- unsigned char readonly; /* Non-zero -> read-only */
- unsigned char type; /* VDISK_xxx */
- blkif_pdev_t pdevice; /* phys device that this vbd maps to */
- struct block_device *bdev;
- rb_node_t rb; /* for linking into R-B tree lookup struct */
-};
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-static inline dev_t vbd_map_devnum(blkif_pdev_t cookie)
-{ return MKDEV(cookie>>8, cookie&0xff); }
-#define vbd_sz(_v) ((_v)->bdev->bd_part ? \
- (_v)->bdev->bd_part->nr_sects : (_v)->bdev->bd_disk->capacity)
-#define bdev_put(_b) blkdev_put(_b)
-#else
-#define vbd_sz(_v) (blk_size[MAJOR((_v)->pdevice)][MINOR((_v)->pdevice)]*2)
-#define bdev_put(_b) ((void)0)
-#define bdev_hardsect_size(_b) 512
-#endif
-
-void vbd_create(blkif_be_vbd_create_t *create)
-{
- struct vbd *vbd;
- rb_node_t **rb_p, *rb_parent = NULL;
- blkif_t *blkif;
- blkif_vdev_t vdevice = create->vdevice;
-
- blkif = blkif_find_by_handle(create->domid, create->blkif_handle);
- if ( unlikely(blkif == NULL) )
- {
- DPRINTK("vbd_create attempted for non-existent blkif (%u,%u)\n",
- create->domid, create->blkif_handle);
- create->status = BLKIF_BE_STATUS_INTERFACE_NOT_FOUND;
- return;
- }
-
- rb_p = &blkif->vbd_rb.rb_node;
- while ( *rb_p != NULL )
- {
- rb_parent = *rb_p;
- vbd = rb_entry(rb_parent, struct vbd, rb);
- if ( vdevice < vbd->vdevice )
- {
- rb_p = &rb_parent->rb_left;
- }
- else if ( vdevice > vbd->vdevice )
- {
- rb_p = &rb_parent->rb_right;
- }
- else
- {
- DPRINTK("vbd_create attempted for already existing vbd\n");
- create->status = BLKIF_BE_STATUS_VBD_EXISTS;
- return;
- }
- }
-
- if ( unlikely((vbd = kmalloc(sizeof(struct vbd), GFP_KERNEL)) == NULL) )
- {
- DPRINTK("vbd_create: out of memory\n");
- create->status = BLKIF_BE_STATUS_OUT_OF_MEMORY;
- return;
- }
-
- vbd->vdevice = vdevice;
- vbd->readonly = create->readonly;
- vbd->type = 0;
-
- /* Mask to 16-bit for compatibility with old tools */
- vbd->pdevice = create->pdevice & 0xffff;
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
- vbd->bdev = open_by_devnum(
- vbd_map_devnum(vbd->pdevice),
- vbd->readonly ? FMODE_READ : FMODE_WRITE);
- if ( IS_ERR(vbd->bdev) )
- {
- DPRINTK("vbd_creat: device %08x doesn't exist.\n", vbd->pdevice);
- create->status = BLKIF_BE_STATUS_PHYSDEV_NOT_FOUND;
- return;
- }
-
- if ( (vbd->bdev->bd_disk == NULL) )
- {
- DPRINTK("vbd_creat: device %08x doesn't exist.\n", vbd->pdevice);
- create->status = BLKIF_BE_STATUS_PHYSDEV_NOT_FOUND;
- bdev_put(vbd->bdev);
- return;
- }
-
- if ( vbd->bdev->bd_disk->flags & GENHD_FL_CD )
- vbd->type |= VDISK_CDROM;
- if ( vbd->bdev->bd_disk->flags & GENHD_FL_REMOVABLE )
- vbd->type |= VDISK_REMOVABLE;
-
-#else
- if ( (blk_size[MAJOR(vbd->pdevice)] == NULL) || (vbd_sz(vbd) == 0) )
- {
- DPRINTK("vbd_creat: device %08x doesn't exist.\n", vbd->pdevice);
- create->status = BLKIF_BE_STATUS_PHYSDEV_NOT_FOUND;
- return;
- }
-#endif
-
- spin_lock(&blkif->vbd_lock);
- rb_link_node(&vbd->rb, rb_parent, rb_p);
- rb_insert_color(&vbd->rb, &blkif->vbd_rb);
- spin_unlock(&blkif->vbd_lock);
-
- DPRINTK("Successful creation of vdev=%04x (dom=%u)\n",
- vdevice, create->domid);
- create->status = BLKIF_BE_STATUS_OKAY;
-}
-
-
-void vbd_destroy(blkif_be_vbd_destroy_t *destroy)
-{
- blkif_t *blkif;
- struct vbd *vbd;
- rb_node_t *rb;
- blkif_vdev_t vdevice = destroy->vdevice;
-
- blkif = blkif_find_by_handle(destroy->domid, destroy->blkif_handle);
- if ( unlikely(blkif == NULL) )
- {
- DPRINTK("vbd_destroy attempted for non-existent blkif (%u,%u)\n",
- destroy->domid, destroy->blkif_handle);
- destroy->status = BLKIF_BE_STATUS_INTERFACE_NOT_FOUND;
- return;
- }
-
- rb = blkif->vbd_rb.rb_node;
- while ( rb != NULL )
- {
- vbd = rb_entry(rb, struct vbd, rb);
- if ( vdevice < vbd->vdevice )
- rb = rb->rb_left;
- else if ( vdevice > vbd->vdevice )
- rb = rb->rb_right;
- else
- goto found;
- }
-
- destroy->status = BLKIF_BE_STATUS_VBD_NOT_FOUND;
- return;
-
- found:
- spin_lock(&blkif->vbd_lock);
- rb_erase(rb, &blkif->vbd_rb);
- spin_unlock(&blkif->vbd_lock);
- bdev_put(vbd->bdev);
- kfree(vbd);
-}
-
-
-void destroy_all_vbds(blkif_t *blkif)
-{
- struct vbd *vbd;
- rb_node_t *rb;
-
- spin_lock(&blkif->vbd_lock);
-
- while ( (rb = blkif->vbd_rb.rb_node) != NULL )
- {
- vbd = rb_entry(rb, struct vbd, rb);
- rb_erase(rb, &blkif->vbd_rb);
- spin_unlock(&blkif->vbd_lock);
- bdev_put(vbd->bdev);
- kfree(vbd);
- spin_lock(&blkif->vbd_lock);
- }
-
- spin_unlock(&blkif->vbd_lock);
-}
-
-
-static void vbd_probe_single(
- blkif_t *blkif, vdisk_t *vbd_info, struct vbd *vbd)
-{
- vbd_info->device = vbd->vdevice;
- vbd_info->info = vbd->type | (vbd->readonly ? VDISK_READONLY : 0);
- vbd_info->capacity = vbd_sz(vbd);
- vbd_info->sector_size = bdev_hardsect_size(vbd->bdev);
-}
-
-
-int vbd_probe(blkif_t *blkif, vdisk_t *vbd_info, int max_vbds)
-{
- int rc = 0, nr_vbds = 0;
- rb_node_t *rb;
-
- spin_lock(&blkif->vbd_lock);
-
- if ( (rb = blkif->vbd_rb.rb_node) == NULL )
- goto out;
-
- new_subtree:
- /* STEP 1. Find least node (it'll be left-most). */
- while ( rb->rb_left != NULL )
- rb = rb->rb_left;
-
- for ( ; ; )
- {
- /* STEP 2. Dealt with left subtree. Now process current node. */
- vbd_probe_single(blkif, &vbd_info[nr_vbds],
- rb_entry(rb, struct vbd, rb));
- if ( ++nr_vbds == max_vbds )
- goto out;
-
- /* STEP 3. Process right subtree, if any. */
- if ( rb->rb_right != NULL )
- {
- rb = rb->rb_right;
- goto new_subtree;
- }
-
- /* STEP 4. Done both subtrees. Head back through ancesstors. */
- for ( ; ; )
- {
- /* We're done when we get back to the root node. */
- if ( rb->rb_parent == NULL )
- goto out;
- /* If we are left of parent, then parent is next to process. */
- if ( rb->rb_parent->rb_left == rb )
- break;
- /* If we are right of parent, then we climb to grandparent. */
- rb = rb->rb_parent;
- }
-
- rb = rb->rb_parent;
- }
-
- out:
- spin_unlock(&blkif->vbd_lock);
- return (rc == 0) ? nr_vbds : rc;
-}
-
-
-int vbd_translate(struct phys_req *req, blkif_t *blkif, int operation)
-{
- struct vbd *vbd;
- rb_node_t *rb;
- int rc = -EACCES;
-
- /* Take the vbd_lock because another thread could be updating the tree. */
- spin_lock(&blkif->vbd_lock);
-
- rb = blkif->vbd_rb.rb_node;
- while ( rb != NULL )
- {
- vbd = rb_entry(rb, struct vbd, rb);
- if ( req->dev < vbd->vdevice )
- rb = rb->rb_left;
- else if ( req->dev > vbd->vdevice )
- rb = rb->rb_right;
- else
- goto found;
- }
-
- DPRINTK("vbd_translate; domain %u attempted to access "
- "non-existent VBD.\n", blkif->domid);
- rc = -ENODEV;
- goto out;
-
- found:
-
- if ( (operation == WRITE) && vbd->readonly )
- goto out;
-
- if ( unlikely((req->sector_number + req->nr_sects) > vbd_sz(vbd)) )
- goto out;
-
- req->dev = vbd->pdevice;
- req->bdev = vbd->bdev;
- rc = 0;
-
- out:
- spin_unlock(&blkif->vbd_lock);
- return rc;
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/blkfront/Kconfig
--- a/linux-2.6.11-xen-sparse/drivers/xen/blkfront/Kconfig Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,6 +0,0 @@
-
-config XENBLOCK
- tristate "Block device driver"
- depends on ARCH_XEN
- help
- Block device driver for Xen
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/blkfront/Makefile
--- a/linux-2.6.11-xen-sparse/drivers/xen/blkfront/Makefile Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,3 +0,0 @@
-
-obj-y := blkfront.o vbd.o
-
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/blkfront/blkfront.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/blkfront/blkfront.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,1491 +0,0 @@
-/******************************************************************************
- * blkfront.c
- *
- * XenLinux virtual block-device driver.
- *
- * Copyright (c) 2003-2004, Keir Fraser & Steve Hand
- * Modifications by Mark A. Williamson are (c) Intel Research Cambridge
- * Copyright (c) 2004, Christian Limpach
- * Copyright (c) 2004, Andrew Warfield
- * Copyright (c) 2005, Christopher Clark
- *
- * This file may be distributed separately from the Linux kernel, or
- * incorporated into other software packages, subject to the following license:
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this source file (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use, copy, modify,
- * merge, publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-#if 1
-#define ASSERT(_p) \
- if ( !(_p) ) { printk("Assertion '%s' failed, line %d, file %s", #_p , \
- __LINE__, __FILE__); *(int*)0=0; }
-#else
-#define ASSERT(_p)
-#endif
-
-#include <linux/version.h>
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-#include "block.h"
-#else
-#include "common.h"
-#include <linux/blk.h>
-#include <linux/tqueue.h>
-#endif
-
-#include <linux/cdrom.h>
-#include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <scsi/scsi.h>
-#include <asm-xen/ctrl_if.h>
-#include <asm-xen/evtchn.h>
-#ifdef CONFIG_XEN_BLKDEV_GRANT
-#include <asm-xen/xen-public/grant_table.h>
-#include <asm-xen/gnttab.h>
-#endif
-
-typedef unsigned char byte; /* from linux/ide.h */
-
-/* Control whether runtime update of vbds is enabled. */
-#define ENABLE_VBD_UPDATE 1
-
-#if ENABLE_VBD_UPDATE
-static void vbd_update(void);
-#else
-static void vbd_update(void){};
-#endif
-
-#define BLKIF_STATE_CLOSED 0
-#define BLKIF_STATE_DISCONNECTED 1
-#define BLKIF_STATE_CONNECTED 2
-
-static int blkif_handle = 0;
-static unsigned int blkif_state = BLKIF_STATE_CLOSED;
-static unsigned int blkif_evtchn = 0;
-static unsigned int blkif_irq = 0;
-
-static int blkif_control_rsp_valid;
-static blkif_response_t blkif_control_rsp;
-
-static blkif_front_ring_t blk_ring;
-
-#define BLK_RING_SIZE __RING_SIZE((blkif_sring_t *)0, PAGE_SIZE)
-
-#ifdef CONFIG_XEN_BLKDEV_GRANT
-static domid_t rdomid = 0;
-static grant_ref_t gref_head, gref_terminal;
-#define MAXIMUM_OUTSTANDING_BLOCK_REQS \
- (BLKIF_MAX_SEGMENTS_PER_REQUEST * BLKIF_RING_SIZE)
-#define GRANTREF_INVALID (1<<15)
-#endif
-
-static struct blk_shadow {
- blkif_request_t req;
- unsigned long request;
- unsigned long frame[BLKIF_MAX_SEGMENTS_PER_REQUEST];
-} blk_shadow[BLK_RING_SIZE];
-unsigned long blk_shadow_free;
-
-static int recovery = 0; /* Recovery in progress: protected by blkif_io_lock */
-
-static void kick_pending_request_queues(void);
-
-int __init xlblk_init(void);
-
-static void blkif_completion(struct blk_shadow *s);
-
-static inline int GET_ID_FROM_FREELIST(void)
-{
- unsigned long free = blk_shadow_free;
- BUG_ON(free > BLK_RING_SIZE);
- blk_shadow_free = blk_shadow[free].req.id;
- blk_shadow[free].req.id = 0x0fffffee; /* debug */
- return free;
-}
-
-static inline void ADD_ID_TO_FREELIST(unsigned long id)
-{
- blk_shadow[id].req.id = blk_shadow_free;
- blk_shadow[id].request = 0;
- blk_shadow_free = id;
-}
-
-
-/************************ COMMON CODE (inlined) ************************/
-
-/* Kernel-specific definitions used in the common code */
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-#define DISABLE_SCATTERGATHER()
-#else
-static int sg_operation = -1;
-#define DISABLE_SCATTERGATHER() (sg_operation = -1)
-#endif
-
-static inline void pickle_request(struct blk_shadow *s, blkif_request_t *r)
-{
-#ifndef CONFIG_XEN_BLKDEV_GRANT
- int i;
-#endif
-
- s->req = *r;
-
-#ifndef CONFIG_XEN_BLKDEV_GRANT
- for ( i = 0; i < r->nr_segments; i++ )
- s->req.frame_and_sects[i] = machine_to_phys(r->frame_and_sects[i]);
-#endif
-}
-
-static inline void unpickle_request(blkif_request_t *r, struct blk_shadow *s)
-{
-#ifndef CONFIG_XEN_BLKDEV_GRANT
- int i;
-#endif
-
- *r = s->req;
-
-#ifndef CONFIG_XEN_BLKDEV_GRANT
- for ( i = 0; i < s->req.nr_segments; i++ )
- r->frame_and_sects[i] = phys_to_machine(s->req.frame_and_sects[i]);
-#endif
-}
-
-
-static inline void flush_requests(void)
-{
- DISABLE_SCATTERGATHER();
- RING_PUSH_REQUESTS(&blk_ring);
- notify_via_evtchn(blkif_evtchn);
-}
-
-
-/************************** KERNEL VERSION 2.6 **************************/
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-
-module_init(xlblk_init);
-
-#if ENABLE_VBD_UPDATE
-static void update_vbds_task(void *unused)
-{
- xlvbd_update_vbds();
-}
-
-static void vbd_update(void)
-{
- static DECLARE_WORK(update_tq, update_vbds_task, NULL);
- schedule_work(&update_tq);
-}
-#endif /* ENABLE_VBD_UPDATE */
-
-static struct xlbd_disk_info *head_waiting = NULL;
-static void kick_pending_request_queues(void)
-{
- struct xlbd_disk_info *di;
- while ( ((di = head_waiting) != NULL) && !RING_FULL(&blk_ring) )
- {
- head_waiting = di->next_waiting;
- di->next_waiting = NULL;
- /* Re-enable calldowns. */
- blk_start_queue(di->rq);
- /* Kick things off immediately. */
- do_blkif_request(di->rq);
- }
-}
-
-int blkif_open(struct inode *inode, struct file *filep)
-{
- struct gendisk *gd = inode->i_bdev->bd_disk;
- struct xlbd_disk_info *di = (struct xlbd_disk_info *)gd->private_data;
-
- /* Update of usage count is protected by per-device semaphore. */
- di->mi->usage++;
-
- return 0;
-}
-
-
-int blkif_release(struct inode *inode, struct file *filep)
-{
- struct gendisk *gd = inode->i_bdev->bd_disk;
- struct xlbd_disk_info *di = (struct xlbd_disk_info *)gd->private_data;
-
- /*
- * When usage drops to zero it may allow more VBD updates to occur.
- * Update of usage count is protected by a per-device semaphore.
- */
- if ( --di->mi->usage == 0 )
- vbd_update();
-
- return 0;
-}
-
-
-int blkif_ioctl(struct inode *inode, struct file *filep,
- unsigned command, unsigned long argument)
-{
- int i;
-
- DPRINTK_IOCTL("command: 0x%x, argument: 0x%lx, dev: 0x%04x\n",
- command, (long)argument, inode->i_rdev);
-
- switch ( command )
- {
- case HDIO_GETGEO:
- /* return ENOSYS to use defaults */
- return -ENOSYS;
-
- case CDROMMULTISESSION:
- DPRINTK("FIXME: support multisession CDs later\n");
- for ( i = 0; i < sizeof(struct cdrom_multisession); i++ )
- if ( put_user(0, (byte *)(argument + i)) ) return -EFAULT;
- return 0;
-
- default:
- /*printk(KERN_ALERT "ioctl %08x not supported by Xen blkdev\n",
- command);*/
- return -EINVAL; /* same return as native Linux */
- }
-
- return 0;
-}
-
-
-/*
- * blkif_queue_request
- *
- * request block io
- *
- * id: for guest use only.
- * operation: BLKIF_OP_{READ,WRITE,PROBE}
- * buffer: buffer to read/write into. this should be a
- * virtual address in the guest os.
- */
-static int blkif_queue_request(struct request *req)
-{
- struct xlbd_disk_info *di = req->rq_disk->private_data;
- unsigned long buffer_ma;
- blkif_request_t *ring_req;
- struct bio *bio;
- struct bio_vec *bvec;
- int idx;
- unsigned long id;
- unsigned int fsect, lsect;
-#ifdef CONFIG_XEN_BLKDEV_GRANT
- int ref;
-#endif
-
- if ( unlikely(blkif_state != BLKIF_STATE_CONNECTED) )
- return 1;
-
- /* Fill out a communications ring structure. */
- ring_req = RING_GET_REQUEST(&blk_ring, blk_ring.req_prod_pvt);
- id = GET_ID_FROM_FREELIST();
- blk_shadow[id].request = (unsigned long)req;
-
- ring_req->id = id;
- ring_req->operation = rq_data_dir(req) ? BLKIF_OP_WRITE :
- BLKIF_OP_READ;
- ring_req->sector_number = (blkif_sector_t)req->sector;
- ring_req->device = di->xd_device;
-
- ring_req->nr_segments = 0;
- rq_for_each_bio(bio, req)
- {
- bio_for_each_segment(bvec, bio, idx)
- {
- if ( ring_req->nr_segments == BLKIF_MAX_SEGMENTS_PER_REQUEST )
- BUG();
- buffer_ma = page_to_phys(bvec->bv_page);
- fsect = bvec->bv_offset >> 9;
- lsect = fsect + (bvec->bv_len >> 9) - 1;
-#ifdef CONFIG_XEN_BLKDEV_GRANT
- /* install a grant reference. */
- ref = gnttab_claim_grant_reference(&gref_head, gref_terminal);
- ASSERT( ref != -ENOSPC );
-
- gnttab_grant_foreign_access_ref(
- ref,
- rdomid,
- buffer_ma >> PAGE_SHIFT,
- rq_data_dir(req) );
-
- blk_shadow[id].frame[ring_req->nr_segments] =
- buffer_ma >> PAGE_SHIFT;
-
- ring_req->frame_and_sects[ring_req->nr_segments++] =
- (((u32) ref) << 16) | (fsect << 3) | lsect;
-
-#else
- ring_req->frame_and_sects[ring_req->nr_segments++] =
- buffer_ma | (fsect << 3) | lsect;
-#endif
- }
- }
-
- blk_ring.req_prod_pvt++;
-
- /* Keep a private copy so we can reissue requests when recovering. */
- pickle_request(&blk_shadow[id], ring_req);
-
- return 0;
-}
-
-
-/*
- * do_blkif_request
- * read a block; request is in a request queue
- */
-void do_blkif_request(request_queue_t *rq)
-{
- struct xlbd_disk_info *di;
- struct request *req;
- int queued;
-
- DPRINTK("Entered do_blkif_request\n");
-
- queued = 0;
-
- while ( (req = elv_next_request(rq)) != NULL )
- {
- if ( !blk_fs_request(req) )
- {
- end_request(req, 0);
- continue;
- }
-
- if ( RING_FULL(&blk_ring) )
- goto wait;
-
- DPRINTK("do_blk_req %p: cmd %p, sec %lx, (%u/%li) buffer:%p [%s]\n",
- req, req->cmd, req->sector, req->current_nr_sectors,
- req->nr_sectors, req->buffer,
- rq_data_dir(req) ? "write" : "read");
-
- blkdev_dequeue_request(req);
- if ( blkif_queue_request(req) )
- {
- wait:
- di = req->rq_disk->private_data;
- if ( di->next_waiting == NULL )
- {
- di->next_waiting = head_waiting;
- head_waiting = di;
- /* Avoid pointless unplugs. */
- blk_stop_queue(rq);
- }
- break;
- }
-
- queued++;
- }
-
- if ( queued != 0 )
- flush_requests();
-}
-
-
-static irqreturn_t blkif_int(int irq, void *dev_id, struct pt_regs *ptregs)
-{
- struct request *req;
- blkif_response_t *bret;
- RING_IDX i, rp;
- unsigned long flags;
-
- spin_lock_irqsave(&blkif_io_lock, flags);
-
- if ( unlikely(blkif_state == BLKIF_STATE_CLOSED) ||
- unlikely(recovery) )
- {
- spin_unlock_irqrestore(&blkif_io_lock, flags);
- return IRQ_HANDLED;
- }
-
- rp = blk_ring.sring->rsp_prod;
- rmb(); /* Ensure we see queued responses up to 'rp'. */
-
- for ( i = blk_ring.rsp_cons; i != rp; i++ )
- {
- unsigned long id;
-
- bret = RING_GET_RESPONSE(&blk_ring, i);
- id = bret->id;
- req = (struct request *)blk_shadow[id].request;
-
- blkif_completion(&blk_shadow[id]);
-
- ADD_ID_TO_FREELIST(id);
-
- switch ( bret->operation )
- {
- case BLKIF_OP_READ:
- case BLKIF_OP_WRITE:
- if ( unlikely(bret->status != BLKIF_RSP_OKAY) )
- DPRINTK("Bad return from blkdev data request: %x\n",
- bret->status);
-
- if ( unlikely(end_that_request_first
- (req,
- (bret->status == BLKIF_RSP_OKAY),
- req->hard_nr_sectors)) )
- BUG();
- end_that_request_last(req);
-
- break;
- case BLKIF_OP_PROBE:
- memcpy(&blkif_control_rsp, bret, sizeof(*bret));
- blkif_control_rsp_valid = 1;
- break;
- default:
- BUG();
- }
- }
-
- blk_ring.rsp_cons = i;
-
- kick_pending_request_queues();
-
- spin_unlock_irqrestore(&blkif_io_lock, flags);
-
- return IRQ_HANDLED;
-}
-
-#else
-/************************** KERNEL VERSION 2.4 **************************/
-
-static kdev_t sg_dev;
-static unsigned long sg_next_sect;
-
-/*
- * Request queues with outstanding work, but ring is currently full.
- * We need no special lock here, as we always access this with the
- * blkif_io_lock held. We only need a small maximum list.
- */
-#define MAX_PENDING 8
-static request_queue_t *pending_queues[MAX_PENDING];
-static int nr_pending;
-
-
-#define blkif_io_lock io_request_lock
-
-/*============================================================================*/
-#if ENABLE_VBD_UPDATE
-
-/*
- * blkif_update_int/update-vbds_task - handle VBD update events.
- * Schedule a task for keventd to run, which will update the VBDs and perform
- * the corresponding updates to our view of VBD state.
- */
-static void update_vbds_task(void *unused)
-{
- xlvbd_update_vbds();
-}
-
-static void vbd_update(void)
-{
- static struct tq_struct update_tq;
- update_tq.routine = update_vbds_task;
- schedule_task(&update_tq);
-}
-
-#endif /* ENABLE_VBD_UPDATE */
-/*============================================================================*/
-
-static void kick_pending_request_queues(void)
-{
- /* We kick pending request queues if the ring is reasonably empty. */
- if ( (nr_pending != 0) &&
- (RING_PENDING_REQUESTS(&blk_ring) < (BLK_RING_SIZE >> 1)) )
- {
- /* Attempt to drain the queue, but bail if the ring becomes full. */
- while ( (nr_pending != 0) && !RING_FULL(&blk_ring) )
- do_blkif_request(pending_queues[--nr_pending]);
- }
-}
-
-int blkif_open(struct inode *inode, struct file *filep)
-{
- short xldev = inode->i_rdev;
- struct gendisk *gd = get_gendisk(xldev);
- xl_disk_t *disk = xldev_to_xldisk(inode->i_rdev);
- short minor = MINOR(xldev);
-
- if ( gd->part[minor].nr_sects == 0 )
- {
- /*
- * Device either doesn't exist, or has zero capacity; we use a few
- * cheesy heuristics to return the relevant error code
- */
- if ( (gd->sizes[minor >> gd->minor_shift] != 0) ||
- ((minor & (gd->max_p - 1)) != 0) )
- {
- /*
- * We have a real device, but no such partition, or we just have a
- * partition number so guess this is the problem.
- */
- return -ENXIO; /* no such device or address */
- }
- else if ( gd->flags[minor >> gd->minor_shift] & GENHD_FL_REMOVABLE )
- {
- /* This is a removable device => assume that media is missing. */
- return -ENOMEDIUM; /* media not present (this is a guess) */
- }
- else
- {
- /* Just go for the general 'no such device' error. */
- return -ENODEV; /* no such device */
- }
- }
-
- /* Update of usage count is protected by per-device semaphore. */
- disk->usage++;
-
- return 0;
-}
-
-
-int blkif_release(struct inode *inode, struct file *filep)
-{
- xl_disk_t *disk = xldev_to_xldisk(inode->i_rdev);
-
- /*
- * When usage drops to zero it may allow more VBD updates to occur.
- * Update of usage count is protected by a per-device semaphore.
- */
- if ( --disk->usage == 0 ) {
- vbd_update();
- }
-
- return 0;
-}
-
-
-int blkif_ioctl(struct inode *inode, struct file *filep,
- unsigned command, unsigned long argument)
-{
- kdev_t dev = inode->i_rdev;
- struct hd_geometry *geo = (struct hd_geometry *)argument;
- struct gendisk *gd;
- struct hd_struct *part;
- int i;
- unsigned short cylinders;
- byte heads, sectors;
-
- /* NB. No need to check permissions. That is done for us. */
-
- DPRINTK_IOCTL("command: 0x%x, argument: 0x%lx, dev: 0x%04x\n",
- command, (long) argument, dev);
-
- gd = get_gendisk(dev);
- part = &gd->part[MINOR(dev)];
-
- switch ( command )
- {
- case BLKGETSIZE:
- DPRINTK_IOCTL(" BLKGETSIZE: %x %lx\n", BLKGETSIZE, part->nr_sects);
- return put_user(part->nr_sects, (unsigned long *) argument);
-
- case BLKGETSIZE64:
- DPRINTK_IOCTL(" BLKGETSIZE64: %x %llx\n", BLKGETSIZE64,
- (u64)part->nr_sects * 512);
- return put_user((u64)part->nr_sects * 512, (u64 *) argument);
-
- case BLKRRPART: /* re-read partition table */
- DPRINTK_IOCTL(" BLKRRPART: %x\n", BLKRRPART);
- return blkif_revalidate(dev);
-
- case BLKSSZGET:
- return hardsect_size[MAJOR(dev)][MINOR(dev)];
-
- case BLKBSZGET: /* get block size */
- DPRINTK_IOCTL(" BLKBSZGET: %x\n", BLKBSZGET);
- break;
-
- case BLKBSZSET: /* set block size */
- DPRINTK_IOCTL(" BLKBSZSET: %x\n", BLKBSZSET);
- break;
-
- case BLKRASET: /* set read-ahead */
- DPRINTK_IOCTL(" BLKRASET: %x\n", BLKRASET);
- break;
-
- case BLKRAGET: /* get read-ahead */
- DPRINTK_IOCTL(" BLKRAFET: %x\n", BLKRAGET);
- break;
-
- case HDIO_GETGEO:
- DPRINTK_IOCTL(" HDIO_GETGEO: %x\n", HDIO_GETGEO);
- if (!argument) return -EINVAL;
-
- /* We don't have real geometry info, but let's at least return
- values consistent with the size of the device */
-
- heads = 0xff;
- sectors = 0x3f;
- cylinders = part->nr_sects / (heads * sectors);
-
- if (put_user(0x00, (unsigned long *) &geo->start)) return -EFAULT;
- if (put_user(heads, (byte *)&geo->heads)) return -EFAULT;
- if (put_user(sectors, (byte *)&geo->sectors)) return -EFAULT;
- if (put_user(cylinders, (unsigned short *)&geo->cylinders)) return
-EFAULT;
-
- return 0;
-
- case HDIO_GETGEO_BIG:
- DPRINTK_IOCTL(" HDIO_GETGEO_BIG: %x\n", HDIO_GETGEO_BIG);
- if (!argument) return -EINVAL;
-
- /* We don't have real geometry info, but let's at least return
- values consistent with the size of the device */
-
- heads = 0xff;
- sectors = 0x3f;
- cylinders = part->nr_sects / (heads * sectors);
-
- if (put_user(0x00, (unsigned long *) &geo->start)) return -EFAULT;
- if (put_user(heads, (byte *)&geo->heads)) return -EFAULT;
- if (put_user(sectors, (byte *)&geo->sectors)) return -EFAULT;
- if (put_user(cylinders, (unsigned int *) &geo->cylinders)) return
-EFAULT;
-
- return 0;
-
- case CDROMMULTISESSION:
- DPRINTK("FIXME: support multisession CDs later\n");
- for ( i = 0; i < sizeof(struct cdrom_multisession); i++ )
- if ( put_user(0, (byte *)(argument + i)) ) return -EFAULT;
- return 0;
-
- case SCSI_IOCTL_GET_BUS_NUMBER:
- DPRINTK("FIXME: SCSI_IOCTL_GET_BUS_NUMBER ioctl in XL blkif");
- return -ENOSYS;
-
- default:
- WPRINTK("ioctl %08x not supported by XL blkif\n", command);
- return -ENOSYS;
- }
-
- return 0;
-}
-
-
-
-/* check media change: should probably do something here in some cases :-) */
-int blkif_check(kdev_t dev)
-{
- DPRINTK("blkif_check\n");
- return 0;
-}
-
-int blkif_revalidate(kdev_t dev)
-{
- struct block_device *bd;
- struct gendisk *gd;
- xl_disk_t *disk;
- unsigned long capacity;
- int i, rc = 0;
-
- if ( (bd = bdget(dev)) == NULL )
- return -EINVAL;
-
- /*
- * Update of partition info, and check of usage count, is protected
- * by the per-block-device semaphore.
- */
- down(&bd->bd_sem);
-
- if ( ((gd = get_gendisk(dev)) == NULL) ||
- ((disk = xldev_to_xldisk(dev)) == NULL) ||
- ((capacity = gd->part[MINOR(dev)].nr_sects) == 0) )
- {
- rc = -EINVAL;
- goto out;
- }
-
- if ( disk->usage > 1 )
- {
- rc = -EBUSY;
- goto out;
- }
-
- /* Only reread partition table if VBDs aren't mapped to partitions. */
- if ( !(gd->flags[MINOR(dev) >> gd->minor_shift] & GENHD_FL_VIRT_PARTNS) )
- {
- for ( i = gd->max_p - 1; i >= 0; i-- )
- {
- invalidate_device(dev+i, 1);
- gd->part[MINOR(dev+i)].start_sect = 0;
- gd->part[MINOR(dev+i)].nr_sects = 0;
- gd->sizes[MINOR(dev+i)] = 0;
- }
-
- grok_partitions(gd, MINOR(dev)>>gd->minor_shift, gd->max_p, capacity);
- }
-
- out:
- up(&bd->bd_sem);
- bdput(bd);
- return rc;
-}
-
-
-/*
- * blkif_queue_request
- *
- * request block io
- *
- * id: for guest use only.
- * operation: BLKIF_OP_{READ,WRITE,PROBE}
- * buffer: buffer to read/write into. this should be a
- * virtual address in the guest os.
- */
-static int blkif_queue_request(unsigned long id,
- int operation,
- char * buffer,
- unsigned long sector_number,
- unsigned short nr_sectors,
- kdev_t device)
-{
- unsigned long buffer_ma = virt_to_bus(buffer);
- unsigned long xid;
- struct gendisk *gd;
- blkif_request_t *req;
- struct buffer_head *bh;
- unsigned int fsect, lsect;
-#ifdef CONFIG_XEN_BLKDEV_GRANT
- int ref;
-#endif
-
- fsect = (buffer_ma & ~PAGE_MASK) >> 9;
- lsect = fsect + nr_sectors - 1;
-
- /* Buffer must be sector-aligned. Extent mustn't cross a page boundary. */
- if ( unlikely((buffer_ma & ((1<<9)-1)) != 0) )
- BUG();
- if ( lsect > 7 )
- BUG();
-
- buffer_ma &= PAGE_MASK;
-
- if ( unlikely(blkif_state != BLKIF_STATE_CONNECTED) )
- return 1;
-
- switch ( operation )
- {
-
- case BLKIF_OP_READ:
- case BLKIF_OP_WRITE:
- gd = get_gendisk(device);
-
- /*
- * Update the sector_number we'll pass down as appropriate; note that
- * we could sanity check that resulting sector will be in this
- * partition, but this will happen in driver backend anyhow.
- */
- sector_number += gd->part[MINOR(device)].start_sect;
-
- /*
- * If this unit doesn't consist of virtual partitions then we clear
- * the partn bits from the device number.
- */
- if ( !(gd->flags[MINOR(device)>>gd->minor_shift] &
- GENHD_FL_VIRT_PARTNS) )
- device &= ~(gd->max_p - 1);
-
- if ( (sg_operation == operation) &&
- (sg_dev == device) &&
- (sg_next_sect == sector_number) )
- {
- req = RING_GET_REQUEST(&blk_ring,
- blk_ring.req_prod_pvt - 1);
- bh = (struct buffer_head *)id;
-
- bh->b_reqnext = (struct buffer_head *)blk_shadow[req->id].request;
- blk_shadow[req->id].request = (unsigned long)id;
-
-#ifdef CONFIG_XEN_BLKDEV_GRANT
- /* install a grant reference. */
- ref = gnttab_claim_grant_reference(&gref_head, gref_terminal);
- ASSERT( ref != -ENOSPC );
-
- gnttab_grant_foreign_access_ref(
- ref,
- rdomid,
- buffer_ma >> PAGE_SHIFT,
- ( operation == BLKIF_OP_WRITE ? 1 : 0 ) );
-
- blk_shadow[req->id].frame[req->nr_segments] =
- buffer_ma >> PAGE_SHIFT;
-
- req->frame_and_sects[req->nr_segments] =
- (((u32) ref ) << 16) | (fsect << 3) | lsect;
-#else
- req->frame_and_sects[req->nr_segments] =
- buffer_ma | (fsect << 3) | lsect;
-#endif
- if ( ++req->nr_segments < BLKIF_MAX_SEGMENTS_PER_REQUEST )
- sg_next_sect += nr_sectors;
- else
- DISABLE_SCATTERGATHER();
-
- /* Update the copy of the request in the recovery ring. */
- pickle_request(&blk_shadow[req->id], req );
-
- return 0;
- }
- else if ( RING_FULL(&blk_ring) )
- {
- return 1;
- }
- else
- {
- sg_operation = operation;
- sg_dev = device;
- sg_next_sect = sector_number + nr_sectors;
- }
- break;
-
- default:
- panic("unknown op %d\n", operation);
- }
-
- /* Fill out a communications ring structure. */
- req = RING_GET_REQUEST(&blk_ring, blk_ring.req_prod_pvt);
-
- xid = GET_ID_FROM_FREELIST();
- blk_shadow[xid].request = (unsigned long)id;
-
- req->id = xid;
- req->operation = operation;
- req->sector_number = (blkif_sector_t)sector_number;
- req->device = device;
- req->nr_segments = 1;
-#ifdef CONFIG_XEN_BLKDEV_GRANT
- /* install a grant reference. */
- ref = gnttab_claim_grant_reference(&gref_head, gref_terminal);
- ASSERT( ref != -ENOSPC );
-
- gnttab_grant_foreign_access_ref(
- ref,
- rdomid,
- buffer_ma >> PAGE_SHIFT,
- ( operation == BLKIF_OP_WRITE ? 1 : 0 ) );
-
- blk_shadow[xid].frame[0] = buffer_ma >> PAGE_SHIFT;
-
- req->frame_and_sects[0] = (((u32) ref)<<16) | (fsect<<3) | lsect;
-#else
- req->frame_and_sects[0] = buffer_ma | (fsect<<3) | lsect;
-#endif
-
- /* Keep a private copy so we can reissue requests when recovering. */
- pickle_request(&blk_shadow[xid], req);
-
- blk_ring.req_prod_pvt++;
-
- return 0;
-}
-
-
-/*
- * do_blkif_request
- * read a block; request is in a request queue
- */
-void do_blkif_request(request_queue_t *rq)
-{
- struct request *req;
- struct buffer_head *bh, *next_bh;
- int rw, nsect, full, queued = 0;
-
- DPRINTK("Entered do_blkif_request\n");
-
- while ( !rq->plugged && !list_empty(&rq->queue_head))
- {
- if ( (req = blkdev_entry_next_request(&rq->queue_head)) == NULL )
- goto out;
-
- DPRINTK("do_blkif_request %p: cmd %i, sec %lx, (%li/%li) bh:%p\n",
- req, req->cmd, req->sector,
- req->current_nr_sectors, req->nr_sectors, req->bh);
-
- rw = req->cmd;
- if ( rw == READA )
- rw = READ;
- if ( unlikely((rw != READ) && (rw != WRITE)) )
- panic("XenoLinux Virtual Block Device: bad cmd: %d\n", rw);
-
- req->errors = 0;
-
- bh = req->bh;
- while ( bh != NULL )
- {
- next_bh = bh->b_reqnext;
- bh->b_reqnext = NULL;
-
- full = blkif_queue_request(
- (unsigned long)bh,
- (rw == READ) ? BLKIF_OP_READ : BLKIF_OP_WRITE,
- bh->b_data, bh->b_rsector, bh->b_size>>9, bh->b_rdev);
-
- if ( full )
- {
- bh->b_reqnext = next_bh;
- pending_queues[nr_pending++] = rq;
- if ( unlikely(nr_pending >= MAX_PENDING) )
- BUG();
- goto out;
- }
-
- queued++;
-
- /* Dequeue the buffer head from the request. */
- nsect = bh->b_size >> 9;
- bh = req->bh = next_bh;
-
- if ( bh != NULL )
- {
- /* There's another buffer head to do. Update the request. */
- req->hard_sector += nsect;
- req->hard_nr_sectors -= nsect;
- req->sector = req->hard_sector;
- req->nr_sectors = req->hard_nr_sectors;
- req->current_nr_sectors = bh->b_size >> 9;
- req->buffer = bh->b_data;
- }
- else
- {
- /* That was the last buffer head. Finalise the request. */
- if ( unlikely(end_that_request_first(req, 1, "XenBlk")) )
- BUG();
- blkdev_dequeue_request(req);
- end_that_request_last(req);
- }
- }
- }
-
- out:
- if ( queued != 0 )
- flush_requests();
-}
-
-
-static void blkif_int(int irq, void *dev_id, struct pt_regs *ptregs)
-{
- RING_IDX i, rp;
- unsigned long flags;
- struct buffer_head *bh, *next_bh;
-
- spin_lock_irqsave(&io_request_lock, flags);
-
- if ( unlikely(blkif_state == BLKIF_STATE_CLOSED || recovery) )
- {
- spin_unlock_irqrestore(&io_request_lock, flags);
- return;
- }
-
- rp = blk_ring.sring->rsp_prod;
- rmb(); /* Ensure we see queued responses up to 'rp'. */
-
- for ( i = blk_ring.rsp_cons; i != rp; i++ )
- {
- unsigned long id;
- blkif_response_t *bret;
-
- bret = RING_GET_RESPONSE(&blk_ring, i);
- id = bret->id;
- bh = (struct buffer_head *)blk_shadow[id].request;
-
- blkif_completion(&blk_shadow[id]);
-
- ADD_ID_TO_FREELIST(id);
-
- switch ( bret->operation )
- {
- case BLKIF_OP_READ:
- case BLKIF_OP_WRITE:
- if ( unlikely(bret->status != BLKIF_RSP_OKAY) )
- DPRINTK("Bad return from blkdev data request: %lx\n",
- bret->status);
- for ( ; bh != NULL; bh = next_bh )
- {
- next_bh = bh->b_reqnext;
- bh->b_reqnext = NULL;
- bh->b_end_io(bh, bret->status == BLKIF_RSP_OKAY);
- }
-
- break;
- case BLKIF_OP_PROBE:
- memcpy(&blkif_control_rsp, bret, sizeof(*bret));
- blkif_control_rsp_valid = 1;
- break;
- default:
- BUG();
- }
-
- }
- blk_ring.rsp_cons = i;
-
- kick_pending_request_queues();
-
- spin_unlock_irqrestore(&io_request_lock, flags);
-}
-
-#endif
-
-/***************************** COMMON CODE *******************************/
-
-#ifdef CONFIG_XEN_BLKDEV_GRANT
-void blkif_control_probe_send(blkif_request_t *req, blkif_response_t *rsp,
- unsigned long address)
-{
- int ref = gnttab_claim_grant_reference(&gref_head, gref_terminal);
- ASSERT( ref != -ENOSPC );
-
- gnttab_grant_foreign_access_ref( ref, rdomid, address >> PAGE_SHIFT, 0 );
-
- req->frame_and_sects[0] = (((u32) ref) << 16) | 7;
-
- blkif_control_send(req, rsp);
-}
-#endif
-
-void blkif_control_send(blkif_request_t *req, blkif_response_t *rsp)
-{
- unsigned long flags, id;
- blkif_request_t *req_d;
-
- retry:
- while ( RING_FULL(&blk_ring) )
- {
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(1);
- }
-
- spin_lock_irqsave(&blkif_io_lock, flags);
- if ( RING_FULL(&blk_ring) )
- {
- spin_unlock_irqrestore(&blkif_io_lock, flags);
- goto retry;
- }
-
- DISABLE_SCATTERGATHER();
- req_d = RING_GET_REQUEST(&blk_ring, blk_ring.req_prod_pvt);
- *req_d = *req;
-
- id = GET_ID_FROM_FREELIST();
- req_d->id = id;
- blk_shadow[id].request = (unsigned long)req;
-
- pickle_request(&blk_shadow[id], req);
-
- blk_ring.req_prod_pvt++;
- flush_requests();
-
- spin_unlock_irqrestore(&blkif_io_lock, flags);
-
- while ( !blkif_control_rsp_valid )
- {
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(1);
- }
-
- memcpy(rsp, &blkif_control_rsp, sizeof(*rsp));
- blkif_control_rsp_valid = 0;
-}
-
-
-/* Send a driver status notification to the domain controller. */
-static void send_driver_status(int ok)
-{
- ctrl_msg_t cmsg = {
- .type = CMSG_BLKIF_FE,
- .subtype = CMSG_BLKIF_FE_DRIVER_STATUS,
- .length = sizeof(blkif_fe_driver_status_t),
- };
- blkif_fe_driver_status_t *msg = (void*)cmsg.msg;
-
- msg->status = (ok ? BLKIF_DRIVER_STATUS_UP : BLKIF_DRIVER_STATUS_DOWN);
-
- ctrl_if_send_message_block(&cmsg, NULL, 0, TASK_UNINTERRUPTIBLE);
-}
-
-/* Tell the controller to bring up the interface. */
-static void blkif_send_interface_connect(void)
-{
- ctrl_msg_t cmsg = {
- .type = CMSG_BLKIF_FE,
- .subtype = CMSG_BLKIF_FE_INTERFACE_CONNECT,
- .length = sizeof(blkif_fe_interface_connect_t),
- };
- blkif_fe_interface_connect_t *msg = (void*)cmsg.msg;
-
- msg->handle = 0;
- msg->shmem_frame = (virt_to_machine(blk_ring.sring) >> PAGE_SHIFT);
-
-#ifdef CONFIG_XEN_BLKDEV_GRANT
- msg->shmem_ref = gnttab_claim_grant_reference( &gref_head, gref_terminal
);
- ASSERT( msg->shmem_ref != -ENOSPC );
- gnttab_grant_foreign_access_ref ( msg->shmem_ref , rdomid,
msg->shmem_frame, 0 );
-#endif
-
- ctrl_if_send_message_block(&cmsg, NULL, 0, TASK_UNINTERRUPTIBLE);
-}
-
-static void blkif_free(void)
-{
- /* Prevent new requests being issued until we fix things up. */
- spin_lock_irq(&blkif_io_lock);
- recovery = 1;
- blkif_state = BLKIF_STATE_DISCONNECTED;
- spin_unlock_irq(&blkif_io_lock);
-
- /* Free resources associated with old device channel. */
- if ( blk_ring.sring != NULL )
- {
- free_page((unsigned long)blk_ring.sring);
- blk_ring.sring = NULL;
- }
- free_irq(blkif_irq, NULL);
- blkif_irq = 0;
-
- unbind_evtchn_from_irq(blkif_evtchn);
- blkif_evtchn = 0;
-}
-
-static void blkif_close(void)
-{
-}
-
-/* Move from CLOSED to DISCONNECTED state. */
-static void blkif_disconnect(void)
-{
- blkif_sring_t *sring;
-
- if ( blk_ring.sring != NULL )
- free_page((unsigned long)blk_ring.sring);
-
- sring = (blkif_sring_t *)__get_free_page(GFP_KERNEL);
- SHARED_RING_INIT(sring);
- FRONT_RING_INIT(&blk_ring, sring, PAGE_SIZE);
- blkif_state = BLKIF_STATE_DISCONNECTED;
- blkif_send_interface_connect();
-}
-
-static void blkif_reset(void)
-{
- blkif_free();
- blkif_disconnect();
-}
-
-static void blkif_recover(void)
-{
- int i;
- blkif_request_t *req;
- struct blk_shadow *copy;
-#ifdef CONFIG_XEN_BLKDEV_GRANT
- int j;
-#endif
-
- /* Stage 1: Make a safe copy of the shadow state. */
- copy = (struct blk_shadow *)kmalloc(sizeof(blk_shadow), GFP_KERNEL);
- BUG_ON(copy == NULL);
- memcpy(copy, blk_shadow, sizeof(blk_shadow));
-
- /* Stage 2: Set up free list. */
- memset(&blk_shadow, 0, sizeof(blk_shadow));
- for ( i = 0; i < BLK_RING_SIZE; i++ )
- blk_shadow[i].req.id = i+1;
- blk_shadow_free = blk_ring.req_prod_pvt;
- blk_shadow[BLK_RING_SIZE-1].req.id = 0x0fffffff;
-
- /* Stage 3: Find pending requests and requeue them. */
- for ( i = 0; i < BLK_RING_SIZE; i++ )
- {
- /* Not in use? */
- if ( copy[i].request == 0 )
- continue;
-
- /* Grab a request slot and unpickle shadow state into it. */
- req = RING_GET_REQUEST(
- &blk_ring, blk_ring.req_prod_pvt);
- unpickle_request(req, ©[i]);
-
- /* We get a new request id, and must reset the shadow state. */
- req->id = GET_ID_FROM_FREELIST();
- memcpy(&blk_shadow[req->id], ©[i], sizeof(copy[i]));
-
-#ifdef CONFIG_XEN_BLKDEV_GRANT
- /* Rewrite any grant references invalidated by suspend/resume. */
- for ( j = 0; j < req->nr_segments; j++ )
- {
- if ( req->frame_and_sects[j] & GRANTREF_INVALID )
- gnttab_grant_foreign_access_ref(
- blkif_gref_from_fas(req->frame_and_sects[j]),
- rdomid,
- blk_shadow[req->id].frame[j],
- rq_data_dir((struct request *)
- blk_shadow[req->id].request));
- req->frame_and_sects[j] &= ~GRANTREF_INVALID;
- }
- blk_shadow[req->id].req = *req;
-#endif
-
- blk_ring.req_prod_pvt++;
- }
-
- kfree(copy);
-
- recovery = 0;
-
- /* blk_ring->req_prod will be set when we flush_requests().*/
- wmb();
-
- /* Kicks things back into life. */
- flush_requests();
-
- /* Now safe to left other people use the interface. */
- blkif_state = BLKIF_STATE_CONNECTED;
-}
-
-static void blkif_connect(blkif_fe_interface_status_t *status)
-{
- int err = 0;
-
- blkif_evtchn = status->evtchn;
- blkif_irq = bind_evtchn_to_irq(blkif_evtchn);
-
- err = request_irq(blkif_irq, blkif_int, SA_SAMPLE_RANDOM, "blkif", NULL);
- if ( err )
- {
- WPRINTK("request_irq failed (err=%d)\n", err);
- return;
- }
-
- if ( recovery )
- {
- blkif_recover();
- }
- else
- {
- /* Transition to connected in case we need to do
- * a partition probe on a whole disk. */
- blkif_state = BLKIF_STATE_CONNECTED;
-
- /* Probe for discs attached to the interface. */
- xlvbd_init();
- }
-
- /* Kick pending requests. */
- spin_lock_irq(&blkif_io_lock);
- kick_pending_request_queues();
- spin_unlock_irq(&blkif_io_lock);
-}
-
-static void unexpected(blkif_fe_interface_status_t *status)
-{
- DPRINTK(" Unexpected blkif status %u in state %u\n",
- status->status, blkif_state);
-}
-
-static void blkif_status(blkif_fe_interface_status_t *status)
-{
-#ifdef CONFIG_XEN_BLKDEV_GRANT
- rdomid = status->domid; /* need to set rdomid early */
-#endif
-
- if ( status->handle != blkif_handle )
- {
- WPRINTK(" Invalid blkif: handle=%u\n", status->handle);
- unexpected(status);
- return;
- }
-
- switch ( status->status )
- {
- case BLKIF_INTERFACE_STATUS_CLOSED:
- switch ( blkif_state )
- {
- case BLKIF_STATE_CLOSED:
- unexpected(status);
- break;
- case BLKIF_STATE_DISCONNECTED:
- case BLKIF_STATE_CONNECTED:
- unexpected(status);
- blkif_close();
- break;
- }
- break;
-
- case BLKIF_INTERFACE_STATUS_DISCONNECTED:
- switch ( blkif_state )
- {
- case BLKIF_STATE_CLOSED:
- blkif_disconnect();
- break;
- case BLKIF_STATE_DISCONNECTED:
- case BLKIF_STATE_CONNECTED:
- /* unexpected(status); */ /* occurs during suspend/resume */
- blkif_reset();
- break;
- }
- break;
-
- case BLKIF_INTERFACE_STATUS_CONNECTED:
- switch ( blkif_state )
- {
- case BLKIF_STATE_CLOSED:
- unexpected(status);
- blkif_disconnect();
- blkif_connect(status);
- break;
- case BLKIF_STATE_DISCONNECTED:
- blkif_connect(status);
- break;
- case BLKIF_STATE_CONNECTED:
- unexpected(status);
- blkif_connect(status);
- break;
- }
- break;
-
- case BLKIF_INTERFACE_STATUS_CHANGED:
- switch ( blkif_state )
- {
- case BLKIF_STATE_CLOSED:
- case BLKIF_STATE_DISCONNECTED:
- unexpected(status);
- break;
- case BLKIF_STATE_CONNECTED:
- vbd_update();
- break;
- }
- break;
-
- default:
- WPRINTK(" Invalid blkif status: %d\n", status->status);
- break;
- }
-}
-
-
-static void blkif_ctrlif_rx(ctrl_msg_t *msg, unsigned long id)
-{
- switch ( msg->subtype )
- {
- case CMSG_BLKIF_FE_INTERFACE_STATUS:
- blkif_status((blkif_fe_interface_status_t *)
- &msg->msg[0]);
- break;
- default:
- msg->length = 0;
- break;
- }
-
- ctrl_if_send_response(msg);
-}
-
-int wait_for_blkif(void)
-{
- int err = 0;
- int i;
- send_driver_status(1);
-
- /*
- * We should read 'nr_interfaces' from response message and wait
- * for notifications before proceeding. For now we assume that we
- * will be notified of exactly one interface.
- */
- for ( i=0; (blkif_state != BLKIF_STATE_CONNECTED) && (i < 10*HZ); i++ )
- {
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(1);
- }
-
- if ( blkif_state != BLKIF_STATE_CONNECTED )
- {
- WPRINTK("Timeout connecting to device!\n");
- err = -ENOSYS;
- }
- return err;
-}
-
-int __init xlblk_init(void)
-{
- int i;
-
-#ifdef CONFIG_XEN_BLKDEV_GRANT
- if ( 0 > gnttab_alloc_grant_references( MAXIMUM_OUTSTANDING_BLOCK_REQS,
- &gref_head, &gref_terminal ))
- return 1;
- printk(KERN_ALERT "Blkif frontend is using grant tables.\n");
-#endif
-
- if ( (xen_start_info.flags & SIF_INITDOMAIN) ||
- (xen_start_info.flags & SIF_BLK_BE_DOMAIN) )
- return 0;
-
- IPRINTK("Initialising virtual block device driver\n");
-
- blk_shadow_free = 0;
- memset(blk_shadow, 0, sizeof(blk_shadow));
- for ( i = 0; i < BLK_RING_SIZE; i++ )
- blk_shadow[i].req.id = i+1;
- blk_shadow[BLK_RING_SIZE-1].req.id = 0x0fffffff;
-
- (void)ctrl_if_register_receiver(CMSG_BLKIF_FE, blkif_ctrlif_rx,
- CALLBACK_IN_BLOCKING_CONTEXT);
-
- wait_for_blkif();
-
- return 0;
-}
-
-void blkdev_suspend(void)
-{
-}
-
-void blkdev_resume(void)
-{
-#ifdef CONFIG_XEN_BLKDEV_GRANT
- int i, j;
- for ( i = 0; i < BLK_RING_SIZE; i++ )
- for ( j = 0; j < BLKIF_MAX_SEGMENTS_PER_REQUEST; j++ )
- blk_shadow[i].req.frame_and_sects[j] |= GRANTREF_INVALID;
-#endif
- send_driver_status(1);
-}
-
-static void blkif_completion(struct blk_shadow *s)
-{
- int i;
-#ifdef CONFIG_XEN_BLKDEV_GRANT
- for ( i = 0; i < s->req.nr_segments; i++ )
- gnttab_release_grant_reference(
- &gref_head, blkif_gref_from_fas(s->req.frame_and_sects[i]));
-#else
- /* This is a hack to get the dirty logging bits set */
- if ( s->req.operation == BLKIF_OP_READ )
- {
- for ( i = 0; i < s->req.nr_segments; i++ )
- {
- unsigned long pfn = s->req.frame_and_sects[i] >> PAGE_SHIFT;
- unsigned long mfn = phys_to_machine_mapping[pfn];
- xen_machphys_update(mfn, pfn);
- }
- }
-#endif
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/blkfront/block.h
--- a/linux-2.6.11-xen-sparse/drivers/xen/blkfront/block.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,133 +0,0 @@
-/******************************************************************************
- * block.h
- *
- * Shared definitions between all levels of XenLinux Virtual block devices.
- *
- * Copyright (c) 2003-2004, Keir Fraser & Steve Hand
- * Modifications by Mark A. Williamson are (c) Intel Research Cambridge
- * Copyright (c) 2004-2005, Christian Limpach
- *
- * This file may be distributed separately from the Linux kernel, or
- * incorporated into other software packages, subject to the following license:
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this source file (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use, copy, modify,
- * merge, publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-#ifndef __XEN_DRIVERS_BLOCK_H__
-#define __XEN_DRIVERS_BLOCK_H__
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/hdreg.h>
-#include <linux/blkdev.h>
-#include <linux/major.h>
-#include <linux/devfs_fs_kernel.h>
-#include <asm-xen/xen-public/xen.h>
-#include <asm-xen/xen-public/io/blkif.h>
-#include <asm-xen/xen-public/io/ring.h>
-#include <asm/io.h>
-#include <asm/atomic.h>
-#include <asm/uaccess.h>
-
-#if 1
-#define IPRINTK(fmt, args...) \
- printk(KERN_INFO "xen_blk: " fmt, ##args)
-#else
-#define IPRINTK(fmt, args...) ((void)0)
-#endif
-
-#if 1
-#define WPRINTK(fmt, args...) \
- printk(KERN_WARNING "xen_blk: " fmt, ##args)
-#else
-#define WPRINTK(fmt, args...) ((void)0)
-#endif
-
-#if 0
-#define DPRINTK(_f, _a...) printk ( KERN_ALERT _f , ## _a )
-#else
-#define DPRINTK(_f, _a...) ((void)0)
-#endif
-
-#if 0
-#define DPRINTK_IOCTL(_f, _a...) printk ( KERN_ALERT _f , ## _a )
-#else
-#define DPRINTK_IOCTL(_f, _a...) ((void)0)
-#endif
-
-struct xlbd_type_info {
- int partn_shift;
- int disks_per_major;
- char *devname;
- char *diskname;
-};
-
-/*
- * We have one of these per vbd, whether ide, scsi or 'other'. They
- * hang in private_data off the gendisk structure. We may end up
- * putting all kinds of interesting stuff here :-)
- */
-struct xlbd_major_info {
- int major;
- int index;
- int usage;
- struct xlbd_type_info *type;
-};
-
-struct xlbd_disk_info {
- int xd_device;
- struct xlbd_major_info *mi;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
- struct xlbd_disk_info *next_waiting;
- request_queue_t *rq;
-#endif
-};
-
-typedef struct xen_block {
- int usage;
-} xen_block_t;
-
-extern spinlock_t blkif_io_lock;
-
-extern int blkif_open(struct inode *inode, struct file *filep);
-extern int blkif_release(struct inode *inode, struct file *filep);
-extern int blkif_ioctl(struct inode *inode, struct file *filep,
- unsigned command, unsigned long argument);
-extern int blkif_check(dev_t dev);
-extern int blkif_revalidate(dev_t dev);
-extern void blkif_control_send(blkif_request_t *req, blkif_response_t *rsp);
-#ifdef CONFIG_XEN_BLKDEV_GRANT
-extern void blkif_control_probe_send(
- blkif_request_t *req, blkif_response_t *rsp, unsigned long address);
-#endif
-extern void do_blkif_request (request_queue_t *rq);
-
-extern void xlvbd_update_vbds(void);
-
-/* Virtual block-device subsystem. */
-extern int xlvbd_init(void);
-extern void xlvbd_cleanup(void);
-
-#endif /* __XEN_DRIVERS_BLOCK_H__ */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/blkfront/vbd.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/blkfront/vbd.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,500 +0,0 @@
-/******************************************************************************
- * vbd.c
- *
- * XenLinux virtual block-device driver (xvd).
- *
- * Copyright (c) 2003-2004, Keir Fraser & Steve Hand
- * Modifications by Mark A. Williamson are (c) Intel Research Cambridge
- * Copyright (c) 2004-2005, Christian Limpach
- *
- * This file may be distributed separately from the Linux kernel, or
- * incorporated into other software packages, subject to the following license:
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this source file (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use, copy, modify,
- * merge, publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-#include "block.h"
-#include <linux/blkdev.h>
-#include <linux/list.h>
-
-/*
- * For convenience we distinguish between ide, scsi and 'other' (i.e.,
- * potentially combinations of the two) in the naming scheme and in a few other
- * places.
- */
-
-#define NUM_IDE_MAJORS 10
-#define NUM_SCSI_MAJORS 9
-#define NUM_VBD_MAJORS 1
-
-struct lvdisk
-{
- blkif_sector_t capacity; /* 0: Size in terms of 512-byte sectors. */
- blkif_vdev_t device; /* 8: Device number (opaque 16 bit value). */
- u16 info;
- struct list_head list;
-};
-
-static struct xlbd_type_info xlbd_ide_type = {
- .partn_shift = 6,
- .disks_per_major = 2,
- .devname = "ide",
- .diskname = "hd",
-};
-
-static struct xlbd_type_info xlbd_scsi_type = {
- .partn_shift = 4,
- .disks_per_major = 16,
- .devname = "sd",
- .diskname = "sd",
-};
-
-static struct xlbd_type_info xlbd_vbd_type = {
- .partn_shift = 4,
- .disks_per_major = 16,
- .devname = "xvd",
- .diskname = "xvd",
-};
-
-static struct xlbd_major_info *major_info[NUM_IDE_MAJORS + NUM_SCSI_MAJORS +
- NUM_VBD_MAJORS];
-
-#define XLBD_MAJOR_IDE_START 0
-#define XLBD_MAJOR_SCSI_START (NUM_IDE_MAJORS)
-#define XLBD_MAJOR_VBD_START (NUM_IDE_MAJORS + NUM_SCSI_MAJORS)
-
-#define XLBD_MAJOR_IDE_RANGE XLBD_MAJOR_IDE_START ... XLBD_MAJOR_SCSI_START
- 1
-#define XLBD_MAJOR_SCSI_RANGE XLBD_MAJOR_SCSI_START ... XLBD_MAJOR_VBD_START
- 1
-#define XLBD_MAJOR_VBD_RANGE XLBD_MAJOR_VBD_START ... XLBD_MAJOR_VBD_START
+ NUM_VBD_MAJORS - 1
-
-/* Information about our VBDs. */
-#define MAX_VBDS 64
-struct list_head vbds_list;
-
-#define MAJOR_XEN(dev) ((dev)>>8)
-#define MINOR_XEN(dev) ((dev) & 0xff)
-
-static struct block_device_operations xlvbd_block_fops =
-{
- .owner = THIS_MODULE,
- .open = blkif_open,
- .release = blkif_release,
- .ioctl = blkif_ioctl,
-};
-
-spinlock_t blkif_io_lock = SPIN_LOCK_UNLOCKED;
-
-static struct lvdisk *xlvbd_device_alloc(void)
-{
- struct lvdisk *disk;
-
- disk = kmalloc(sizeof(*disk), GFP_KERNEL);
- if (disk != NULL) {
- memset(disk, 0, sizeof(*disk));
- INIT_LIST_HEAD(&disk->list);
- }
- return disk;
-}
-
-static void xlvbd_device_free(struct lvdisk *disk)
-{
- list_del(&disk->list);
- kfree(disk);
-}
-
-static vdisk_t *xlvbd_probe(int *ret)
-{
- blkif_response_t rsp;
- blkif_request_t req;
- vdisk_t *disk_info = NULL;
- unsigned long buf;
- int nr;
-
- buf = __get_free_page(GFP_KERNEL);
- if ((void *)buf == NULL)
- goto out;
-
- memset(&req, 0, sizeof(req));
- req.operation = BLKIF_OP_PROBE;
- req.nr_segments = 1;
-#ifdef CONFIG_XEN_BLKDEV_GRANT
- blkif_control_probe_send(&req, &rsp,
- (unsigned long)(virt_to_machine(buf)));
-#else
- req.frame_and_sects[0] = virt_to_machine(buf) | 7;
-
- blkif_control_send(&req, &rsp);
-#endif
- if ( rsp.status <= 0 ) {
- WPRINTK("Could not probe disks (%d)\n", rsp.status);
- goto out;
- }
- nr = rsp.status;
- if ( nr > MAX_VBDS )
- nr = MAX_VBDS;
-
- disk_info = kmalloc(nr * sizeof(vdisk_t), GFP_KERNEL);
- if (disk_info != NULL)
- memcpy(disk_info, (void *) buf, nr * sizeof(vdisk_t));
-
- if (ret != NULL)
- *ret = nr;
-
-out:
- free_page(buf);
- return disk_info;
-}
-
-static struct xlbd_major_info *xlbd_alloc_major_info(
- int major, int minor, int index)
-{
- struct xlbd_major_info *ptr;
-
- ptr = kmalloc(sizeof(struct xlbd_major_info), GFP_KERNEL);
- if (ptr == NULL)
- return NULL;
-
- memset(ptr, 0, sizeof(struct xlbd_major_info));
-
- ptr->major = major;
-
- switch (index) {
- case XLBD_MAJOR_IDE_RANGE:
- ptr->type = &xlbd_ide_type;
- ptr->index = index - XLBD_MAJOR_IDE_START;
- break;
- case XLBD_MAJOR_SCSI_RANGE:
- ptr->type = &xlbd_scsi_type;
- ptr->index = index - XLBD_MAJOR_SCSI_START;
- break;
- case XLBD_MAJOR_VBD_RANGE:
- ptr->type = &xlbd_vbd_type;
- ptr->index = index - XLBD_MAJOR_VBD_START;
- break;
- }
-
- if (register_blkdev(ptr->major, ptr->type->devname)) {
- WPRINTK("can't get major %d with name %s\n",
- ptr->major, ptr->type->devname);
- kfree(ptr);
- return NULL;
- }
-
- devfs_mk_dir(ptr->type->devname);
- major_info[index] = ptr;
- return ptr;
-}
-
-static struct xlbd_major_info *xlbd_get_major_info(int device)
-{
- int major, minor, index;
-
- major = MAJOR_XEN(device);
- minor = MINOR_XEN(device);
-
- switch (major) {
- case IDE0_MAJOR: index = 0; break;
- case IDE1_MAJOR: index = 1; break;
- case IDE2_MAJOR: index = 2; break;
- case IDE3_MAJOR: index = 3; break;
- case IDE4_MAJOR: index = 4; break;
- case IDE5_MAJOR: index = 5; break;
- case IDE6_MAJOR: index = 6; break;
- case IDE7_MAJOR: index = 7; break;
- case IDE8_MAJOR: index = 8; break;
- case IDE9_MAJOR: index = 9; break;
- case SCSI_DISK0_MAJOR: index = 10; break;
- case SCSI_DISK1_MAJOR ... SCSI_DISK7_MAJOR:
- index = 11 + major - SCSI_DISK1_MAJOR;
- break;
- case SCSI_CDROM_MAJOR: index = 18; break;
- default: index = 19; break;
- }
-
- return ((major_info[index] != NULL) ? major_info[index] :
- xlbd_alloc_major_info(major, minor, index));
-}
-
-static int xlvbd_init_blk_queue(struct gendisk *gd, vdisk_t *disk)
-{
- request_queue_t *rq;
-
- rq = blk_init_queue(do_blkif_request, &blkif_io_lock);
- if (rq == NULL)
- return -1;
-
- elevator_init(rq, "noop");
-
- /* Hard sector size and max sectors impersonate the equiv. hardware. */
- blk_queue_hardsect_size(rq, disk->sector_size);
- blk_queue_max_sectors(rq, 512);
-
- /* Each segment in a request is up to an aligned page in size. */
- blk_queue_segment_boundary(rq, PAGE_SIZE - 1);
- blk_queue_max_segment_size(rq, PAGE_SIZE);
-
- /* Ensure a merged request will fit in a single I/O ring slot. */
- blk_queue_max_phys_segments(rq, BLKIF_MAX_SEGMENTS_PER_REQUEST);
- blk_queue_max_hw_segments(rq, BLKIF_MAX_SEGMENTS_PER_REQUEST);
-
- /* Make sure buffer addresses are sector-aligned. */
- blk_queue_dma_alignment(rq, 511);
-
- gd->queue = rq;
-
- return 0;
-}
-
-struct gendisk *xlvbd_alloc_gendisk(
- struct xlbd_major_info *mi, int minor, vdisk_t *disk)
-{
- struct gendisk *gd;
- struct xlbd_disk_info *di;
- int nr_minors = 1;
-
- di = kmalloc(sizeof(struct xlbd_disk_info), GFP_KERNEL);
- if (di == NULL)
- return NULL;
- memset(di, 0, sizeof(*di));
- di->mi = mi;
- di->xd_device = disk->device;
-
- if ((minor & ((1 << mi->type->partn_shift) - 1)) == 0)
- nr_minors = 1 << mi->type->partn_shift;
-
- gd = alloc_disk(nr_minors);
- if (gd == NULL)
- goto out;
-
- if (nr_minors > 1)
- sprintf(gd->disk_name, "%s%c", mi->type->diskname,
- 'a' + mi->index * mi->type->disks_per_major +
- (minor >> mi->type->partn_shift));
- else
- sprintf(gd->disk_name, "%s%c%d", mi->type->diskname,
- 'a' + mi->index * mi->type->disks_per_major +
- (minor >> mi->type->partn_shift),
- minor & ((1 << mi->type->partn_shift) - 1));
-
- gd->major = mi->major;
- gd->first_minor = minor;
- gd->fops = &xlvbd_block_fops;
- gd->private_data = di;
- set_capacity(gd, disk->capacity);
-
- if (xlvbd_init_blk_queue(gd, disk)) {
- del_gendisk(gd);
- goto out;
- }
-
- di->rq = gd->queue;
-
- if (disk->info & VDISK_READONLY)
- set_disk_ro(gd, 1);
-
- if (disk->info & VDISK_REMOVABLE)
- gd->flags |= GENHD_FL_REMOVABLE;
-
- if (disk->info & VDISK_CDROM)
- gd->flags |= GENHD_FL_CD;
-
- add_disk(gd);
-
- return gd;
-
-out:
- kfree(di);
- return NULL;
-}
-
-static int xlvbd_device_add(struct list_head *list, vdisk_t *disk)
-{
- struct lvdisk *new;
- int minor;
- dev_t device;
- struct block_device *bd;
- struct gendisk *gd;
- struct xlbd_major_info *mi;
-
- mi = xlbd_get_major_info(disk->device);
- if (mi == NULL)
- return -EPERM;
-
- new = xlvbd_device_alloc();
- if (new == NULL)
- return -1;
- new->capacity = disk->capacity;
- new->device = disk->device;
- new->info = disk->info;
-
- minor = MINOR_XEN(disk->device);
- device = MKDEV(mi->major, minor);
-
- bd = bdget(device);
- if (bd == NULL)
- goto out;
-
- gd = xlvbd_alloc_gendisk(mi, minor, disk);
- if (gd == NULL)
- goto out_bd;
-
- list_add(&new->list, list);
-out_bd:
- bdput(bd);
-out:
- return 0;
-}
-
-static int xlvbd_device_del(struct lvdisk *disk)
-{
- dev_t device;
- struct block_device *bd;
- struct gendisk *gd;
- struct xlbd_disk_info *di;
- int ret = 0, unused;
- request_queue_t *rq;
-
- device = MKDEV(MAJOR_XEN(disk->device), MINOR_XEN(disk->device));
-
- bd = bdget(device);
- if (bd == NULL)
- return -1;
-
- gd = get_gendisk(device, &unused);
- di = gd->private_data;
-
- if (di->mi->usage != 0) {
- WPRINTK("disk removal failed: used [dev=%x]\n", device);
- ret = -1;
- goto out;
- }
-
- rq = gd->queue;
- del_gendisk(gd);
- put_disk(gd);
- blk_cleanup_queue(rq);
-
- xlvbd_device_free(disk);
-out:
- bdput(bd);
- return ret;
-}
-
-static int xlvbd_device_update(struct lvdisk *ldisk, vdisk_t *disk)
-{
- dev_t device;
- struct block_device *bd;
- struct gendisk *gd;
- int unused;
-
- if ((ldisk->capacity == disk->capacity) && (ldisk->info == disk->info))
- return 0;
-
- device = MKDEV(MAJOR_XEN(ldisk->device), MINOR_XEN(ldisk->device));
-
- bd = bdget(device);
- if (bd == NULL)
- return -1;
-
- gd = get_gendisk(device, &unused);
- set_capacity(gd, disk->capacity);
- ldisk->capacity = disk->capacity;
-
- bdput(bd);
-
- return 0;
-}
-
-void xlvbd_refresh(void)
-{
- vdisk_t *newdisks;
- struct list_head *tmp, *tmp2;
- struct lvdisk *disk;
- int i, nr;
-
- newdisks = xlvbd_probe(&nr);
- if (newdisks == NULL) {
- WPRINTK("failed to probe\n");
- return;
- }
-
- i = 0;
- list_for_each_safe(tmp, tmp2, &vbds_list) {
- disk = list_entry(tmp, struct lvdisk, list);
-
- for (i = 0; i < nr; i++) {
- if ( !newdisks[i].device )
- continue;
- if ( disk->device == newdisks[i].device ) {
- xlvbd_device_update(disk, &newdisks[i]);
- newdisks[i].device = 0;
- break;
- }
- }
- if (i == nr) {
- xlvbd_device_del(disk);
- newdisks[i].device = 0;
- }
- }
- for (i = 0; i < nr; i++)
- if ( newdisks[i].device )
- xlvbd_device_add(&vbds_list, &newdisks[i]);
- kfree(newdisks);
-}
-
-/*
- * xlvbd_update_vbds - reprobes the VBD status and performs updates driver
- * state. The VBDs need to be updated in this way when the domain is
- * initialised and also each time we receive an XLBLK_UPDATE event.
- */
-void xlvbd_update_vbds(void)
-{
- xlvbd_refresh();
-}
-
-/*
- * Set up all the linux device goop for the virtual block devices
- * (vbd's) that we know about. Note that although from the backend
- * driver's p.o.v. VBDs are addressed simply an opaque 16-bit device
- * number, the domain creation tools conventionally allocate these
- * numbers to correspond to those used by 'real' linux -- this is just
- * for convenience as it means e.g. that the same /etc/fstab can be
- * used when booting with or without Xen.
- */
-int xlvbd_init(void)
-{
- int i, nr;
- vdisk_t *disks;
-
- INIT_LIST_HEAD(&vbds_list);
-
- memset(major_info, 0, sizeof(major_info));
-
- disks = xlvbd_probe(&nr);
- if (disks == NULL) {
- WPRINTK("failed to probe\n");
- return -1;
- }
-
- for (i = 0; i < nr; i++)
- xlvbd_device_add(&vbds_list, &disks[i]);
-
- kfree(disks);
- return 0;
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/blktap/Makefile
--- a/linux-2.6.11-xen-sparse/drivers/xen/blktap/Makefile Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,3 +0,0 @@
-
-obj-y := blktap_userdev.o blktap_datapath.o blktap_controlmsg.o blktap.o
-
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/blktap/blktap.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/blktap/blktap.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,87 +0,0 @@
-/******************************************************************************
- * blktap.c
- *
- * XenLinux virtual block-device tap.
- *
- * Copyright (c) 2004, Andrew Warfield
- *
- * Based on the original split block driver:
- * Copyright (c) 2003-2004, Keir Fraser & Steve Hand
- * Modifications by Mark A. Williamson are (c) Intel Research Cambridge
- * Copyright (c) 2004, Christian Limpach
- *
- * Note that unlike the split block driver code, this driver has been developed
- * strictly for Linux 2.6
- */
-
-#include "blktap.h"
-
-int __init xlblktap_init(void)
-{
- ctrl_msg_t cmsg;
- blkif_fe_driver_status_t fe_st;
- blkif_be_driver_status_t be_st;
-
- printk(KERN_INFO "Initialising Xen block tap device\n");
-
- DPRINTK(" tap - Backend connection init:\n");
-
-
- (void)ctrl_if_register_receiver(CMSG_BLKIF_FE, blkif_ctrlif_rx,
- CALLBACK_IN_BLOCKING_CONTEXT);
-
- /* Send a driver-UP notification to the domain controller. */
- cmsg.type = CMSG_BLKIF_FE;
- cmsg.subtype = CMSG_BLKIF_FE_DRIVER_STATUS;
- cmsg.length = sizeof(blkif_fe_driver_status_t);
- fe_st.status = BLKIF_DRIVER_STATUS_UP;
- memcpy(cmsg.msg, &fe_st, sizeof(fe_st));
- ctrl_if_send_message_block(&cmsg, NULL, 0, TASK_UNINTERRUPTIBLE);
-
- DPRINTK(" tap - Frontend connection init:\n");
-
- active_reqs_init();
- blkif_interface_init();
- blkdev_schedule_init();
-
- (void)ctrl_if_register_receiver(CMSG_BLKIF_BE, blkif_ctrlif_rx,
- CALLBACK_IN_BLOCKING_CONTEXT);
-
- /* Send a driver-UP notification to the domain controller. */
- cmsg.type = CMSG_BLKIF_BE;
- cmsg.subtype = CMSG_BLKIF_BE_DRIVER_STATUS;
- cmsg.length = sizeof(blkif_be_driver_status_t);
- be_st.status = BLKIF_DRIVER_STATUS_UP;
- memcpy(cmsg.msg, &be_st, sizeof(be_st));
- ctrl_if_send_message_block(&cmsg, NULL, 0, TASK_UNINTERRUPTIBLE);
-
- DPRINTK(" tap - Userland channel init:\n");
-
- blktap_init();
-
- DPRINTK("Blkif tap device initialized.\n");
-
- return 0;
-}
-
-#if 0 /* tap doesn't handle suspend/resume */
-void blkdev_suspend(void)
-{
-}
-
-void blkdev_resume(void)
-{
- ctrl_msg_t cmsg;
- blkif_fe_driver_status_t st;
-
- /* Send a driver-UP notification to the domain controller. */
- cmsg.type = CMSG_BLKIF_FE;
- cmsg.subtype = CMSG_BLKIF_FE_DRIVER_STATUS;
- cmsg.length = sizeof(blkif_fe_driver_status_t);
- st.status = BLKIF_DRIVER_STATUS_UP;
- memcpy(cmsg.msg, &st, sizeof(st));
- ctrl_if_send_message_block(&cmsg, NULL, 0, TASK_UNINTERRUPTIBLE);
-}
-#endif
-
-__initcall(xlblktap_init);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/blktap/blktap.h
--- a/linux-2.6.11-xen-sparse/drivers/xen/blktap/blktap.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,253 +0,0 @@
-/*
- * blktap.h
- *
- * Interfaces for the Xen block tap driver.
- *
- * (c) 2004, Andrew Warfield, University of Cambridge
- *
- */
-
-#ifndef __BLKTAP_H__
-#define __BLKTAP_H__
-
-#include <linux/version.h>
-#include <linux/blkdev.h>
-#include <linux/config.h>
-#include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <asm-xen/ctrl_if.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <asm/io.h>
-#include <asm/setup.h>
-#include <asm/pgalloc.h>
-#include <asm-xen/hypervisor.h>
-#include <asm-xen/xen-public/io/blkif.h>
-#include <asm-xen/xen-public/io/ring.h>
-
-/* Used to signal to the backend that this is a tap domain. */
-#define BLKTAP_COOKIE 0xbeadfeed
-
-/* -------[ debug / pretty printing ]--------------------------------- */
-
-#define PRINTK(_f, _a...) printk(KERN_ALERT "(file=%s, line=%d) " _f, \
- __FILE__ , __LINE__ , ## _a )
-#if 0
-#define DPRINTK(_f, _a...) printk(KERN_ALERT "(file=%s, line=%d) " _f, \
- __FILE__ , __LINE__ , ## _a )
-#else
-#define DPRINTK(_f, _a...) ((void)0)
-#endif
-
-#if 1
-#define ASSERT(_p) \
- if ( !(_p) ) { printk("Assertion '%s' failed, line %d, file %s", #_p , \
- __LINE__, __FILE__); *(int*)0=0; }
-#else
-#define ASSERT(_p) ((void)0)
-#endif
-
-#define WPRINTK(fmt, args...) printk(KERN_WARNING "blk_tap: " fmt, ##args)
-
-
-/* -------[ state descriptors ]--------------------------------------- */
-
-#define BLKIF_STATE_CLOSED 0
-#define BLKIF_STATE_DISCONNECTED 1
-#define BLKIF_STATE_CONNECTED 2
-
-/* -------[ connection tracking ]------------------------------------- */
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-#define VMALLOC_VMADDR(x) ((unsigned long)(x))
-#endif
-
-extern spinlock_t blkif_io_lock;
-
-typedef struct blkif_st {
- /* Unique identifier for this interface. */
- domid_t domid;
- unsigned int handle;
- /* Physical parameters of the comms window. */
- unsigned long shmem_frame;
- unsigned int evtchn;
- int irq;
- /* Comms information. */
- blkif_back_ring_t blk_ring;
-
- enum { DISCONNECTED, DISCONNECTING, CONNECTED } status;
- /*
- * DISCONNECT response is deferred until pending requests are ack'ed.
- * We therefore need to store the id from the original request.
- */
- u8 disconnect_rspid;
- struct blkif_st *hash_next;
- struct list_head blkdev_list;
- spinlock_t blk_ring_lock;
- atomic_t refcnt;
- struct work_struct work;
-} blkif_t;
-
-blkif_t *blkif_find_by_handle(domid_t domid, unsigned int handle);
-void blkif_disconnect_complete(blkif_t *blkif);
-#define blkif_get(_b) (atomic_inc(&(_b)->refcnt))
-#define blkif_put(_b) \
- do { \
- if ( atomic_dec_and_test(&(_b)->refcnt) ) \
- blkif_disconnect_complete(_b); \
- } while (0)
-
-
-/* -------[ active request tracking ]--------------------------------- */
-
-typedef struct {
- blkif_t *blkif;
- unsigned long id;
- int nr_pages;
- unsigned long mach_fas[BLKIF_MAX_SEGMENTS_PER_REQUEST];
- unsigned long virt_fas[BLKIF_MAX_SEGMENTS_PER_REQUEST];
- int next_free;
-} active_req_t;
-
-typedef unsigned int ACTIVE_RING_IDX;
-
-active_req_t *lookup_active_req(ACTIVE_RING_IDX idx);
-
-extern inline unsigned int ID_TO_IDX(unsigned long id)
-{
- return ( id & 0x0000ffff );
-}
-
-extern inline domid_t ID_TO_DOM(unsigned long id)
-{
- return (id >> 16);
-}
-
-void active_reqs_init(void);
-
-/* -------[ interposition -> character device interface ]------------- */
-
-/* /dev/xen/blktap resides at device number major=10, minor=200 */
-#define BLKTAP_MINOR 202
-
-/* size of the extra VMA area to map in attached pages. */
-#define BLKTAP_VMA_PAGES BLKIF_RING_SIZE
-
-/* blktap IOCTLs: */
-#define BLKTAP_IOCTL_KICK_FE 1
-#define BLKTAP_IOCTL_KICK_BE 2
-#define BLKTAP_IOCTL_SETMODE 3
-#define BLKTAP_IOCTL_PRINT_IDXS 100
-
-/* blktap switching modes: (Set with BLKTAP_IOCTL_SETMODE) */
-#define BLKTAP_MODE_PASSTHROUGH 0x00000000 /* default */
-#define BLKTAP_MODE_INTERCEPT_FE 0x00000001
-#define BLKTAP_MODE_INTERCEPT_BE 0x00000002
-#define BLKTAP_MODE_COPY_FE 0x00000004
-#define BLKTAP_MODE_COPY_BE 0x00000008
-#define BLKTAP_MODE_COPY_FE_PAGES 0x00000010
-#define BLKTAP_MODE_COPY_BE_PAGES 0x00000020
-
-#define BLKTAP_MODE_INTERPOSE \
- (BLKTAP_MODE_INTERCEPT_FE | BLKTAP_MODE_INTERCEPT_BE)
-
-#define BLKTAP_MODE_COPY_BOTH \
- (BLKTAP_MODE_COPY_FE | BLKTAP_MODE_COPY_BE)
-
-#define BLKTAP_MODE_COPY_BOTH_PAGES \
- (BLKTAP_MODE_COPY_FE_PAGES | BLKTAP_MODE_COPY_BE_PAGES)
-
-static inline int BLKTAP_MODE_VALID(unsigned long arg)
-{
- return (
- ( arg == BLKTAP_MODE_PASSTHROUGH ) ||
- ( arg == BLKTAP_MODE_INTERCEPT_FE ) ||
- ( arg == BLKTAP_MODE_INTERCEPT_BE ) ||
- ( arg == BLKTAP_MODE_INTERPOSE ) ||
- ( (arg & ~BLKTAP_MODE_COPY_FE_PAGES) == BLKTAP_MODE_COPY_FE ) ||
- ( (arg & ~BLKTAP_MODE_COPY_BE_PAGES) == BLKTAP_MODE_COPY_BE ) ||
- ( (arg & ~BLKTAP_MODE_COPY_BOTH_PAGES) == BLKTAP_MODE_COPY_BOTH )
- );
-}
-
-
-
-/* -------[ Mappings to User VMA ]------------------------------------ */
-#define MAX_PENDING_REQS 64
-#define BATCH_PER_DOMAIN 16
-extern struct vm_area_struct *blktap_vma;
-
-/* The following are from blkback.c and should probably be put in a
- * header and included from there.
- * The mmap area described here is where attached data pages eill be mapped.
- */
-
-extern unsigned long mmap_vstart;
-#define MMAP_PAGES_PER_REQUEST \
- (BLKIF_MAX_SEGMENTS_PER_REQUEST + 1)
-#define MMAP_PAGES \
- (MAX_PENDING_REQS * MMAP_PAGES_PER_REQUEST)
-#define MMAP_VADDR(_req,_seg) \
- (mmap_vstart + \
- ((_req) * MMAP_PAGES_PER_REQUEST * PAGE_SIZE) + \
- ((_seg) * PAGE_SIZE))
-
-/* immediately before the mmap area, we have a bunch of pages reserved
- * for shared memory rings.
- */
-
-#define RING_PAGES 3 /* Ctrl, Front, and Back */
-extern unsigned long rings_vstart;
-
-
-/* -------[ Here be globals ]----------------------------------------- */
-extern unsigned long blktap_mode;
-
-/* Connection to a single backend domain. */
-extern blkif_front_ring_t blktap_be_ring;
-extern unsigned int blktap_be_evtchn;
-extern unsigned int blktap_be_state;
-
-/* User ring status. */
-extern unsigned long blktap_ring_ok;
-
-/* -------[ ...and function prototypes. ]----------------------------- */
-
-/* init function for character device interface. */
-int blktap_init(void);
-
-/* init function for the blkif cache. */
-void __init blkif_interface_init(void);
-void __init blkdev_schedule_init(void);
-void blkif_deschedule(blkif_t *blkif);
-
-/* interfaces to the char driver, passing messages to and from apps. */
-void blktap_kick_user(void);
-
-/* user ring access functions: */
-int blktap_write_fe_ring(blkif_request_t *req);
-int blktap_write_be_ring(blkif_response_t *rsp);
-int blktap_write_ctrl_ring(ctrl_msg_t *msg);
-
-/* fe/be ring access functions: */
-int write_resp_to_fe_ring(blkif_t *blkif, blkif_response_t *rsp);
-int write_req_to_be_ring(blkif_request_t *req);
-
-/* event notification functions */
-void kick_fe_domain(blkif_t *blkif);
-void kick_be_domain(void);
-
-/* Interrupt handlers. */
-irqreturn_t blkif_ptbe_int(int irq, void *dev_id,
- struct pt_regs *ptregs);
-irqreturn_t blkif_ptfe_int(int irq, void *dev_id, struct pt_regs *regs);
-
-/* Control message receiver. */
-extern void blkif_ctrlif_rx(ctrl_msg_t *msg, unsigned long id);
-
-/* debug */
-void print_fe_ring_idxs(void);
-void print_be_ring_idxs(void);
-
-#define __BLKINT_H__
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/blktap/blktap_controlmsg.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/blktap/blktap_controlmsg.c Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,540 +0,0 @@
-/******************************************************************************
- * blktap_controlmsg.c
- *
- * XenLinux virtual block-device tap.
- * Control interfaces to the frontend and backend drivers.
- *
- * Copyright (c) 2004, Andrew Warfield
- *
- */
-
-#include "blktap.h"
-
-static char *blkif_state_name[] = {
- [BLKIF_STATE_CLOSED] = "closed",
- [BLKIF_STATE_DISCONNECTED] = "disconnected",
- [BLKIF_STATE_CONNECTED] = "connected",
-};
-
-static char * blkif_status_name[] = {
- [BLKIF_INTERFACE_STATUS_CLOSED] = "closed",
- [BLKIF_INTERFACE_STATUS_DISCONNECTED] = "disconnected",
- [BLKIF_INTERFACE_STATUS_CONNECTED] = "connected",
- [BLKIF_INTERFACE_STATUS_CHANGED] = "changed",
-};
-
-static unsigned blktap_be_irq;
-unsigned int blktap_be_state = BLKIF_STATE_CLOSED;
-unsigned int blktap_be_evtchn;
-
-/*-----[ Control Messages to/from Frontend VMs ]--------------------------*/
-
-#define BLKIF_HASHSZ 1024
-#define BLKIF_HASH(_d,_h) (((int)(_d)^(int)(_h))&(BLKIF_HASHSZ-1))
-
-static kmem_cache_t *blkif_cachep;
-static blkif_t *blkif_hash[BLKIF_HASHSZ];
-
-blkif_t *blkif_find_by_handle(domid_t domid, unsigned int handle)
-{
- blkif_t *blkif = blkif_hash[BLKIF_HASH(domid, handle)];
- while ( (blkif != NULL) &&
- ((blkif->domid != domid) || (blkif->handle != handle)) )
- blkif = blkif->hash_next;
- return blkif;
-}
-
-static void __blkif_disconnect_complete(void *arg)
-{
- blkif_t *blkif = (blkif_t *)arg;
- ctrl_msg_t cmsg;
- blkif_be_disconnect_t disc;
-
- /*
- * These can't be done in blkif_disconnect() because at that point there
- * may be outstanding requests at the disc whose asynchronous responses
- * must still be notified to the remote driver.
- */
- unbind_evtchn_from_irq(blkif->evtchn);
- vfree(blkif->blk_ring.sring);
-
- /* Construct the deferred response message. */
- cmsg.type = CMSG_BLKIF_BE;
- cmsg.subtype = CMSG_BLKIF_BE_DISCONNECT;
- cmsg.id = blkif->disconnect_rspid;
- cmsg.length = sizeof(blkif_be_disconnect_t);
- disc.domid = blkif->domid;
- disc.blkif_handle = blkif->handle;
- disc.status = BLKIF_BE_STATUS_OKAY;
- memcpy(cmsg.msg, &disc, sizeof(disc));
-
- /*
- * Make sure message is constructed /before/ status change, because
- * after the status change the 'blkif' structure could be deallocated at
- * any time. Also make sure we send the response /after/ status change,
- * as otherwise a subsequent CONNECT request could spuriously fail if
- * another CPU doesn't see the status change yet.
- */
- mb();
- if ( blkif->status != DISCONNECTING )
- BUG();
- blkif->status = DISCONNECTED;
- mb();
-
- /* Send the successful response. */
- ctrl_if_send_response(&cmsg);
-}
-
-void blkif_disconnect_complete(blkif_t *blkif)
-{
- INIT_WORK(&blkif->work, __blkif_disconnect_complete, (void *)blkif);
- schedule_work(&blkif->work);
-}
-
-void blkif_ptfe_create(blkif_be_create_t *create)
-{
- blkif_t *blkif, **pblkif;
- domid_t domid = create->domid;
- unsigned int handle = create->blkif_handle;
-
-
- /* May want to store info on the connecting domain here. */
-
- DPRINTK("PT got BE_CREATE\n");
-
- if ( (blkif = kmem_cache_alloc(blkif_cachep, GFP_KERNEL)) == NULL )
- {
- WPRINTK("Could not create blkif: out of memory\n");
- create->status = BLKIF_BE_STATUS_OUT_OF_MEMORY;
- return;
- }
-
- /* blkif struct init code from blkback.c */
- memset(blkif, 0, sizeof(*blkif));
- blkif->domid = domid;
- blkif->handle = handle;
- blkif->status = DISCONNECTED;
- spin_lock_init(&blkif->blk_ring_lock);
- atomic_set(&blkif->refcnt, 0);
-
- pblkif = &blkif_hash[BLKIF_HASH(domid, handle)];
- while ( *pblkif != NULL )
- {
- if ( ((*pblkif)->domid == domid) && ((*pblkif)->handle == handle) )
- {
- WPRINTK("Could not create blkif: already exists\n");
- create->status = BLKIF_BE_STATUS_INTERFACE_EXISTS;
- kmem_cache_free(blkif_cachep, blkif);
- return;
- }
- pblkif = &(*pblkif)->hash_next;
- }
-
- blkif->hash_next = *pblkif;
- *pblkif = blkif;
-
- create->status = BLKIF_BE_STATUS_OKAY;
-}
-
-
-void blkif_ptfe_destroy(blkif_be_destroy_t *destroy)
-{
- /* Clear anything that we initialized above. */
-
- domid_t domid = destroy->domid;
- unsigned int handle = destroy->blkif_handle;
- blkif_t **pblkif, *blkif;
-
- DPRINTK("PT got BE_DESTROY\n");
-
- pblkif = &blkif_hash[BLKIF_HASH(domid, handle)];
- while ( (blkif = *pblkif) != NULL )
- {
- if ( (blkif->domid == domid) && (blkif->handle == handle) )
- {
- if ( blkif->status != DISCONNECTED )
- goto still_connected;
- goto destroy;
- }
- pblkif = &blkif->hash_next;
- }
-
- destroy->status = BLKIF_BE_STATUS_INTERFACE_NOT_FOUND;
- return;
-
- still_connected:
- destroy->status = BLKIF_BE_STATUS_INTERFACE_CONNECTED;
- return;
-
- destroy:
- *pblkif = blkif->hash_next;
- kmem_cache_free(blkif_cachep, blkif);
- destroy->status = BLKIF_BE_STATUS_OKAY;
-}
-
-void blkif_ptfe_connect(blkif_be_connect_t *connect)
-{
- domid_t domid = connect->domid;
- unsigned int handle = connect->blkif_handle;
- unsigned int evtchn = connect->evtchn;
- unsigned long shmem_frame = connect->shmem_frame;
- struct vm_struct *vma;
- pgprot_t prot;
- int error;
- blkif_t *blkif;
- blkif_sring_t *sring;
-
- DPRINTK("PT got BE_CONNECT\n");
-
- blkif = blkif_find_by_handle(domid, handle);
- if ( unlikely(blkif == NULL) )
- {
- WPRINTK("blkif_connect attempted for non-existent blkif (%u,%u)\n",
- connect->domid, connect->blkif_handle);
- connect->status = BLKIF_BE_STATUS_INTERFACE_NOT_FOUND;
- return;
- }
-
- if ( (vma = get_vm_area(PAGE_SIZE, VM_IOREMAP)) == NULL )
- {
- connect->status = BLKIF_BE_STATUS_OUT_OF_MEMORY;
- return;
- }
-
- prot = __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED);
- error = direct_remap_area_pages(&init_mm, VMALLOC_VMADDR(vma->addr),
- shmem_frame<<PAGE_SHIFT, PAGE_SIZE,
- prot, domid);
- if ( error != 0 )
- {
- WPRINTK("BE_CONNECT: error! (%d)\n", error);
- if ( error == -ENOMEM )
- connect->status = BLKIF_BE_STATUS_OUT_OF_MEMORY;
- else if ( error == -EFAULT ) {
- connect->status = BLKIF_BE_STATUS_MAPPING_ERROR;
- WPRINTK("BE_CONNECT: MAPPING error!\n");
- }
- else
- connect->status = BLKIF_BE_STATUS_ERROR;
- vfree(vma->addr);
- return;
- }
-
- if ( blkif->status != DISCONNECTED )
- {
- connect->status = BLKIF_BE_STATUS_INTERFACE_CONNECTED;
- vfree(vma->addr);
- return;
- }
-
- sring = (blkif_sring_t *)vma->addr;
- SHARED_RING_INIT(sring);
- BACK_RING_INIT(&blkif->blk_ring, sring, PAGE_SIZE);
-
- blkif->evtchn = evtchn;
- blkif->irq = bind_evtchn_to_irq(evtchn);
- blkif->shmem_frame = shmem_frame;
- blkif->status = CONNECTED;
- blkif_get(blkif);
-
- request_irq(blkif->irq, blkif_ptfe_int, 0, "blkif-pt-backend", blkif);
-
- connect->status = BLKIF_BE_STATUS_OKAY;
-}
-
-int blkif_ptfe_disconnect(blkif_be_disconnect_t *disconnect, u8 rsp_id)
-{
- domid_t domid = disconnect->domid;
- unsigned int handle = disconnect->blkif_handle;
- blkif_t *blkif;
-
- DPRINTK("PT got BE_DISCONNECT\n");
-
- blkif = blkif_find_by_handle(domid, handle);
- if ( unlikely(blkif == NULL) )
- {
- WPRINTK("blkif_disconnect attempted for non-existent blkif"
- " (%u,%u)\n", disconnect->domid, disconnect->blkif_handle);
- disconnect->status = BLKIF_BE_STATUS_INTERFACE_NOT_FOUND;
- return 1; /* Caller will send response error message. */
- }
-
- if ( blkif->status == CONNECTED )
- {
- blkif->status = DISCONNECTING;
- blkif->disconnect_rspid = rsp_id;
- wmb(); /* Let other CPUs see the status change. */
- free_irq(blkif->irq, blkif);
- blkif_deschedule(blkif);
- blkif_put(blkif);
- return 0; /* Caller should not send response message. */
- }
-
- disconnect->status = BLKIF_BE_STATUS_OKAY;
- return 1;
-}
-
-/*-----[ Control Messages to/from Backend VM ]----------------------------*/
-
-/* Tell the controller to bring up the interface. */
-static void blkif_ptbe_send_interface_connect(void)
-{
- ctrl_msg_t cmsg = {
- .type = CMSG_BLKIF_FE,
- .subtype = CMSG_BLKIF_FE_INTERFACE_CONNECT,
- .length = sizeof(blkif_fe_interface_connect_t),
- };
- blkif_fe_interface_connect_t *msg = (void*)cmsg.msg;
- msg->handle = 0;
- msg->shmem_frame = virt_to_machine(blktap_be_ring.sring) >> PAGE_SHIFT;
-
- ctrl_if_send_message_block(&cmsg, NULL, 0, TASK_UNINTERRUPTIBLE);
-}
-
-static void blkif_ptbe_close(void)
-{
-}
-
-/* Move from CLOSED to DISCONNECTED state. */
-static void blkif_ptbe_disconnect(void)
-{
- blkif_sring_t *sring;
-
- sring = (blkif_sring_t *)__get_free_page(GFP_KERNEL);
- SHARED_RING_INIT(sring);
- FRONT_RING_INIT(&blktap_be_ring, sring, PAGE_SIZE);
- blktap_be_state = BLKIF_STATE_DISCONNECTED;
- DPRINTK("Blkif-Passthrough-BE is now DISCONNECTED.\n");
- blkif_ptbe_send_interface_connect();
-}
-
-static void blkif_ptbe_connect(blkif_fe_interface_status_t *status)
-{
- int err = 0;
-
- blktap_be_evtchn = status->evtchn;
- blktap_be_irq = bind_evtchn_to_irq(blktap_be_evtchn);
-
- err = request_irq(blktap_be_irq, blkif_ptbe_int,
- SA_SAMPLE_RANDOM, "blkif", NULL);
- if ( err ) {
- WPRINTK("blkfront request_irq failed (%d)\n", err);
- return;
- } else {
- /* transtion to connected in case we need to do a
- a partion probe on a whole disk */
- blktap_be_state = BLKIF_STATE_CONNECTED;
- }
-}
-
-static void unexpected(blkif_fe_interface_status_t *status)
-{
- WPRINTK(" TAP: Unexpected blkif status %s in state %s\n",
- blkif_status_name[status->status],
- blkif_state_name[blktap_be_state]);
-}
-
-static void blkif_ptbe_status(
- blkif_fe_interface_status_t *status)
-{
- if ( status->handle != 0 )
- {
- DPRINTK("Status change on unsupported blkif %d\n",
- status->handle);
- return;
- }
-
- DPRINTK("ptbe_status: got %s\n", blkif_status_name[status->status]);
-
- switch ( status->status )
- {
- case BLKIF_INTERFACE_STATUS_CLOSED:
- switch ( blktap_be_state )
- {
- case BLKIF_STATE_CLOSED:
- unexpected(status);
- break;
- case BLKIF_STATE_DISCONNECTED:
- case BLKIF_STATE_CONNECTED:
- unexpected(status);
- blkif_ptbe_close();
- break;
- }
- break;
-
- case BLKIF_INTERFACE_STATUS_DISCONNECTED:
- switch ( blktap_be_state )
- {
- case BLKIF_STATE_CLOSED:
- blkif_ptbe_disconnect();
- break;
- case BLKIF_STATE_DISCONNECTED:
- case BLKIF_STATE_CONNECTED:
- printk(KERN_ALERT "*** add recovery code to the tap driver.
***\n");
- unexpected(status);
- break;
- }
- break;
-
- case BLKIF_INTERFACE_STATUS_CONNECTED:
- switch ( blktap_be_state )
- {
- case BLKIF_STATE_CLOSED:
- unexpected(status);
- blkif_ptbe_disconnect();
- blkif_ptbe_connect(status);
- break;
- case BLKIF_STATE_DISCONNECTED:
- blkif_ptbe_connect(status);
- break;
- case BLKIF_STATE_CONNECTED:
- unexpected(status);
- blkif_ptbe_connect(status);
- break;
- }
- break;
-
- case BLKIF_INTERFACE_STATUS_CHANGED:
- switch ( blktap_be_state )
- {
- case BLKIF_STATE_CLOSED:
- case BLKIF_STATE_DISCONNECTED:
- unexpected(status);
- break;
- case BLKIF_STATE_CONNECTED:
- /* vbd_update(); */
- /* tap doesn't really get state changes... */
- unexpected(status);
- break;
- }
- break;
-
- default:
- DPRINTK("Status change to unknown value %d\n", status->status);
- break;
- }
-}
-
-/*-----[ All control messages enter here: ]-------------------------------*/
-
-void blkif_ctrlif_rx(ctrl_msg_t *msg, unsigned long id)
-{
- switch ( msg->type )
- {
- case CMSG_BLKIF_FE:
-
- switch ( msg->subtype )
- {
- case CMSG_BLKIF_FE_INTERFACE_STATUS:
- blkif_ptbe_status((blkif_fe_interface_status_t *) &msg->msg[0]);
- break;
-
- default:
- goto parse_error;
- }
-
- break;
-
- case CMSG_BLKIF_BE:
-
- /* send a copy of the message to user if wanted */
-
- if ( (blktap_mode & BLKTAP_MODE_INTERCEPT_FE) ||
- (blktap_mode & BLKTAP_MODE_COPY_FE) ) {
-
- blktap_write_ctrl_ring(msg);
- blktap_kick_user();
- }
-
- switch ( msg->subtype )
- {
- case CMSG_BLKIF_BE_CREATE:
- blkif_ptfe_create((blkif_be_create_t *)&msg->msg[0]);
- break;
- case CMSG_BLKIF_BE_DESTROY:
- blkif_ptfe_destroy((blkif_be_destroy_t *)&msg->msg[0]);
- break;
- case CMSG_BLKIF_BE_CONNECT:
- blkif_ptfe_connect((blkif_be_connect_t *)&msg->msg[0]);
- break;
- case CMSG_BLKIF_BE_DISCONNECT:
- if ( !blkif_ptfe_disconnect((blkif_be_disconnect_t *)&msg->msg[0],
- msg->id) )
- return;
- break;
-
- /* We just ignore anything to do with vbds for now. */
-
- case CMSG_BLKIF_BE_VBD_CREATE:
- DPRINTK("PT got VBD_CREATE\n");
- ((blkif_be_vbd_create_t *)&msg->msg[0])->status
- = BLKIF_BE_STATUS_OKAY;
- break;
- case CMSG_BLKIF_BE_VBD_DESTROY:
- DPRINTK("PT got VBD_DESTROY\n");
- ((blkif_be_vbd_destroy_t *)&msg->msg[0])->status
- = BLKIF_BE_STATUS_OKAY;
- break;
- default:
- goto parse_error;
- }
-
- break;
- }
-
- ctrl_if_send_response(msg);
- return;
-
- parse_error:
- msg->length = 0;
- ctrl_if_send_response(msg);
-}
-
-/*-----[ Initialization ]-------------------------------------------------*/
-
-void __init blkif_interface_init(void)
-{
- blkif_cachep = kmem_cache_create("blkif_cache", sizeof(blkif_t),
- 0, 0, NULL, NULL);
- memset(blkif_hash, 0, sizeof(blkif_hash));
-
- blktap_be_ring.sring = NULL;
-}
-
-
-
-/* Debug : print the current ring indices. */
-
-void print_fe_ring_idxs(void)
-{
- int i;
- blkif_t *blkif;
-
- WPRINTK("FE Rings: \n---------\n");
- for ( i = 0; i < BLKIF_HASHSZ; i++) {
- blkif = blkif_hash[i];
- while (blkif != NULL) {
- if (blkif->status == DISCONNECTED) {
- WPRINTK("(%2d,%2d) DISCONNECTED\n",
- blkif->domid, blkif->handle);
- } else if (blkif->status == DISCONNECTING) {
- WPRINTK("(%2d,%2d) DISCONNECTING\n",
- blkif->domid, blkif->handle);
- } else if (blkif->blk_ring.sring == NULL) {
- WPRINTK("(%2d,%2d) CONNECTED, but null sring!\n",
- blkif->domid, blkif->handle);
- } else {
- blkif_get(blkif);
- WPRINTK("(%2d,%2d): req_cons: %2d, rsp_prod_prv: %2d "
- "| req_prod: %2d, rsp_prod: %2d\n",
- blkif->domid, blkif->handle,
- blkif->blk_ring.req_cons,
- blkif->blk_ring.rsp_prod_pvt,
- blkif->blk_ring.sring->req_prod,
- blkif->blk_ring.sring->rsp_prod);
- blkif_put(blkif);
- }
- blkif = blkif->hash_next;
- }
- }
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/blktap/blktap_datapath.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/blktap/blktap_datapath.c Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,451 +0,0 @@
-/******************************************************************************
- * blktap_datapath.c
- *
- * XenLinux virtual block-device tap.
- * Block request routing data path.
- *
- * Copyright (c) 2004, Andrew Warfield
- * -- see full header in blktap.c
- */
-
-#include "blktap.h"
-#include <asm-xen/evtchn.h>
-
-/*-----[ The data paths ]-------------------------------------------------*/
-
-/* Connection to a single backend domain. */
-blkif_front_ring_t blktap_be_ring;
-
-/*-----[ Tracking active requests ]---------------------------------------*/
-
-/* this must be the same as MAX_PENDING_REQS in blkback.c */
-#define MAX_ACTIVE_REQS ((ACTIVE_RING_IDX)64U)
-
-active_req_t active_reqs[MAX_ACTIVE_REQS];
-ACTIVE_RING_IDX active_req_ring[MAX_ACTIVE_REQS];
-spinlock_t active_req_lock = SPIN_LOCK_UNLOCKED;
-ACTIVE_RING_IDX active_prod, active_cons;
-#define MASK_ACTIVE_IDX(_i) ((_i)&(MAX_ACTIVE_REQS-1))
-#define ACTIVE_IDX(_ar) (_ar - active_reqs)
-#define NR_ACTIVE_REQS (MAX_ACTIVE_REQS - active_prod + active_cons)
-
-inline active_req_t *get_active_req(void)
-{
- ACTIVE_RING_IDX idx;
- active_req_t *ar;
- unsigned long flags;
-
- ASSERT(active_cons != active_prod);
-
- spin_lock_irqsave(&active_req_lock, flags);
- idx = active_req_ring[MASK_ACTIVE_IDX(active_cons++)];
- ar = &active_reqs[idx];
- spin_unlock_irqrestore(&active_req_lock, flags);
-
- return ar;
-}
-
-inline void free_active_req(active_req_t *ar)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&active_req_lock, flags);
- active_req_ring[MASK_ACTIVE_IDX(active_prod++)] = ACTIVE_IDX(ar);
- spin_unlock_irqrestore(&active_req_lock, flags);
-}
-
-active_req_t *lookup_active_req(ACTIVE_RING_IDX idx)
-{
- return &active_reqs[idx];
-}
-
-void active_reqs_init(void)
-{
- ACTIVE_RING_IDX i;
-
- active_cons = 0;
- active_prod = MAX_ACTIVE_REQS;
- memset(active_reqs, 0, sizeof(active_reqs));
- for ( i = 0; i < MAX_ACTIVE_REQS; i++ )
- active_req_ring[i] = i;
-}
-
-/* Requests passing through the tap to the backend hijack the id field
- * in the request message. In it we put the AR index _AND_ the fe domid.
- * the domid is used by the backend to map the pages properly.
- */
-
-static inline unsigned long MAKE_ID(domid_t fe_dom, ACTIVE_RING_IDX idx)
-{
- return ( (fe_dom << 16) | MASK_ACTIVE_IDX(idx) );
-}
-
-/*-----[ Ring helpers ]---------------------------------------------------*/
-
-static void maybe_trigger_blktap_schedule(void);
-
-inline int write_resp_to_fe_ring(blkif_t *blkif, blkif_response_t *rsp)
-{
- blkif_response_t *resp_d;
- active_req_t *ar;
-
- ar = &active_reqs[ID_TO_IDX(rsp->id)];
- rsp->id = ar->id;
-
- resp_d = RING_GET_RESPONSE(&blkif->blk_ring,
- blkif->blk_ring.rsp_prod_pvt);
- memcpy(resp_d, rsp, sizeof(blkif_response_t));
- wmb();
- blkif->blk_ring.rsp_prod_pvt++;
-
- blkif_put(ar->blkif);
- free_active_req(ar);
-
- return 0;
-}
-
-inline int write_req_to_be_ring(blkif_request_t *req)
-{
- blkif_request_t *req_d;
-
- if ( blktap_be_state != BLKIF_STATE_CONNECTED ) {
- WPRINTK("Tap trying to access an unconnected backend!\n");
- return 0;
- }
-
- req_d = RING_GET_REQUEST(&blktap_be_ring,
- blktap_be_ring.req_prod_pvt);
- memcpy(req_d, req, sizeof(blkif_request_t));
- wmb();
- blktap_be_ring.req_prod_pvt++;
-
- return 0;
-}
-
-void kick_fe_domain(blkif_t *blkif)
-{
- RING_PUSH_RESPONSES(&blkif->blk_ring);
- notify_via_evtchn(blkif->evtchn);
- DPRINTK("notified FE(dom %u)\n", blkif->domid);
-
- /* We just feed up a batch of request slots... */
- maybe_trigger_blktap_schedule();
-
-}
-
-void kick_be_domain(void)
-{
- if ( blktap_be_state != BLKIF_STATE_CONNECTED )
- return;
-
- wmb(); /* Ensure that the frontend can see the requests. */
- RING_PUSH_REQUESTS(&blktap_be_ring);
- notify_via_evtchn(blktap_be_evtchn);
- DPRINTK("notified BE\n");
-}
-
-/*-----[ Data to/from Frontend (client) VMs ]-----------------------------*/
-
-/*-----[ Scheduler list maint -from blkback ]--- */
-
-static struct list_head blkio_schedule_list;
-static spinlock_t blkio_schedule_list_lock;
-
-static int __on_blkdev_list(blkif_t *blkif)
-{
- return blkif->blkdev_list.next != NULL;
-}
-
-static void remove_from_blkdev_list(blkif_t *blkif)
-{
- unsigned long flags;
- if ( !__on_blkdev_list(blkif) ) return;
- spin_lock_irqsave(&blkio_schedule_list_lock, flags);
- if ( __on_blkdev_list(blkif) )
- {
- list_del(&blkif->blkdev_list);
- blkif->blkdev_list.next = NULL;
- blkif_put(blkif);
- }
- spin_unlock_irqrestore(&blkio_schedule_list_lock, flags);
-}
-
-static void add_to_blkdev_list_tail(blkif_t *blkif)
-{
- unsigned long flags;
- if ( __on_blkdev_list(blkif) ) return;
- spin_lock_irqsave(&blkio_schedule_list_lock, flags);
- if ( !__on_blkdev_list(blkif) && (blkif->status == CONNECTED) )
- {
- list_add_tail(&blkif->blkdev_list, &blkio_schedule_list);
- blkif_get(blkif);
- }
- spin_unlock_irqrestore(&blkio_schedule_list_lock, flags);
-}
-
-
-/*-----[ Scheduler functions - from blkback ]--- */
-
-static DECLARE_WAIT_QUEUE_HEAD(blkio_schedule_wait);
-
-static int do_block_io_op(blkif_t *blkif, int max_to_do);
-
-static int blkio_schedule(void *arg)
-{
- DECLARE_WAITQUEUE(wq, current);
-
- blkif_t *blkif;
- struct list_head *ent;
-
- daemonize(
- "xentapd"
- );
-
- for ( ; ; )
- {
- /* Wait for work to do. */
- add_wait_queue(&blkio_schedule_wait, &wq);
- set_current_state(TASK_INTERRUPTIBLE);
- if ( (NR_ACTIVE_REQS == MAX_ACTIVE_REQS) ||
- list_empty(&blkio_schedule_list) )
- schedule();
- __set_current_state(TASK_RUNNING);
- remove_wait_queue(&blkio_schedule_wait, &wq);
-
- /* Queue up a batch of requests. */
- while ( (NR_ACTIVE_REQS < MAX_ACTIVE_REQS) &&
- !list_empty(&blkio_schedule_list) )
- {
- ent = blkio_schedule_list.next;
- blkif = list_entry(ent, blkif_t, blkdev_list);
- blkif_get(blkif);
- remove_from_blkdev_list(blkif);
- if ( do_block_io_op(blkif, BATCH_PER_DOMAIN) )
- add_to_blkdev_list_tail(blkif);
- blkif_put(blkif);
- }
- }
-}
-
-static void maybe_trigger_blktap_schedule(void)
-{
- /*
- * Needed so that two processes, who together make the following predicate
- * true, don't both read stale values and evaluate the predicate
- * incorrectly. Incredibly unlikely to stall the scheduler on x86, but...
- */
- smp_mb();
-
- if ( (NR_ACTIVE_REQS < (MAX_ACTIVE_REQS/2)) &&
- !list_empty(&blkio_schedule_list) )
- wake_up(&blkio_schedule_wait);
-}
-
-void blkif_deschedule(blkif_t *blkif)
-{
- remove_from_blkdev_list(blkif);
-}
-
-void __init blkdev_schedule_init(void)
-{
- spin_lock_init(&blkio_schedule_list_lock);
- INIT_LIST_HEAD(&blkio_schedule_list);
-
- if ( kernel_thread(blkio_schedule, 0, CLONE_FS | CLONE_FILES) < 0 )
- BUG();
-}
-
-/*-----[ Interrupt entry from a frontend ]------ */
-
-irqreturn_t blkif_ptfe_int(int irq, void *dev_id, struct pt_regs *regs)
-{
- blkif_t *blkif = dev_id;
-
- add_to_blkdev_list_tail(blkif);
- maybe_trigger_blktap_schedule();
- return IRQ_HANDLED;
-}
-
-/*-----[ Other Frontend Ring functions ]-------- */
-
-/* irqreturn_t blkif_ptfe_int(int irq, void *dev_id, struct pt_regs *regs)*/
-static int do_block_io_op(blkif_t *blkif, int max_to_do)
-{
- /* we have pending messages from the real frontend. */
-
- blkif_request_t *req_s;
- RING_IDX i, rp;
- unsigned long flags;
- active_req_t *ar;
- int more_to_do = 0;
- int notify_be = 0, notify_user = 0;
-
- if (NR_ACTIVE_REQS == MAX_ACTIVE_REQS) return 1;
-
- /* lock both rings */
- spin_lock_irqsave(&blkif_io_lock, flags);
-
- rp = blkif->blk_ring.sring->req_prod;
- rmb();
-
- for ( i = blkif->blk_ring.req_cons;
- (i != rp) &&
- !RING_REQUEST_CONS_OVERFLOW(&blkif->blk_ring, i);
- i++ )
- {
-
- if ((--max_to_do == 0) || (NR_ACTIVE_REQS == MAX_ACTIVE_REQS))
- {
- more_to_do = 1;
- break;
- }
-
- req_s = RING_GET_REQUEST(&blkif->blk_ring, i);
- /* This is a new request:
- * Assign an active request record, and remap the id.
- */
- ar = get_active_req();
- ar->id = req_s->id;
- ar->nr_pages = req_s->nr_segments;
- blkif_get(blkif);
- ar->blkif = blkif;
- req_s->id = MAKE_ID(blkif->domid, ACTIVE_IDX(ar));
- /* WPRINTK("%3u < %3lu\n", ID_TO_IDX(req_s->id), ar->id); */
-
- /* FE -> BE interposition point is here. */
-
- /* ------------------------------------------------------------- */
- /* BLKIF_OP_PROBE_HACK: */
- /* Signal to the backend that we are a tap domain. */
-
- if (req_s->operation == BLKIF_OP_PROBE) {
- DPRINTK("Adding BLKTAP_COOKIE to PROBE request.\n");
- req_s->frame_and_sects[1] = BLKTAP_COOKIE;
- }
-
- /* ------------------------------------------------------------- */
-
- /* If we are in MODE_INTERCEPT_FE or MODE_COPY_FE: */
- if ( (blktap_mode & BLKTAP_MODE_INTERCEPT_FE) ||
- (blktap_mode & BLKTAP_MODE_COPY_FE) ) {
-
- /* Copy the response message to UFERing */
- /* In MODE_INTERCEPT_FE, map attached pages into the app vma */
- /* In MODE_COPY_FE_PAGES, copy attached pages into the app vma */
-
- DPRINTK("req->UFERing\n");
- blktap_write_fe_ring(req_s);
- notify_user = 1;
- }
-
- /* If we are not in MODE_INTERCEPT_FE or MODE_INTERCEPT_BE: */
- if ( !((blktap_mode & BLKTAP_MODE_INTERCEPT_FE) ||
- (blktap_mode & BLKTAP_MODE_INTERCEPT_BE)) ) {
-
- /* be included to prevent noise from the fe when its off */
- /* copy the request message to the BERing */
-
- DPRINTK("blktap: FERing[%u] -> BERing[%u]\n",
- (unsigned)i & (RING_SIZE(&blktap_be_ring)-1),
- (unsigned)blktap_be_ring.req_prod_pvt &
- (RING_SIZE((&blktap_be_ring)-1)));
-
- write_req_to_be_ring(req_s);
- notify_be = 1;
- }
- }
-
- blkif->blk_ring.req_cons = i;
-
- /* unlock rings */
- spin_unlock_irqrestore(&blkif_io_lock, flags);
-
- if (notify_user)
- blktap_kick_user();
- if (notify_be)
- kick_be_domain();
-
- return more_to_do;
-}
-
-/*-----[ Data to/from Backend (server) VM ]------------------------------*/
-
-
-irqreturn_t blkif_ptbe_int(int irq, void *dev_id,
- struct pt_regs *ptregs)
-{
- blkif_response_t *resp_s;
- blkif_t *blkif;
- RING_IDX rp, i;
- unsigned long flags;
-
- DPRINTK("PT got BE interrupt.\n");
-
- /* lock both rings */
- spin_lock_irqsave(&blkif_io_lock, flags);
-
- rp = blktap_be_ring.sring->rsp_prod;
- rmb();
-
- for ( i = blktap_be_ring.rsp_cons; i != rp; i++)
- {
- resp_s = RING_GET_RESPONSE(&blktap_be_ring, i);
-
- /* BE -> FE interposition point is here. */
-
- blkif = active_reqs[ID_TO_IDX(resp_s->id)].blkif;
-
- /* If we are in MODE_INTERCEPT_BE or MODE_COPY_BE: */
- if ( (blktap_mode & BLKTAP_MODE_INTERCEPT_BE) ||
- (blktap_mode & BLKTAP_MODE_COPY_BE) ) {
-
- /* Copy the response message to UBERing */
- /* In MODE_INTERCEPT_BE, map attached pages into the app vma */
- /* In MODE_COPY_BE_PAGES, copy attached pages into the app vma */
-
- DPRINTK("rsp->UBERing\n");
- blktap_write_be_ring(resp_s);
- blktap_kick_user();
-
- }
-
- /* If we are NOT in MODE_INTERCEPT_BE or MODE_INTERCEPT_FE: */
- if ( !((blktap_mode & BLKTAP_MODE_INTERCEPT_BE) ||
- (blktap_mode & BLKTAP_MODE_INTERCEPT_FE)) ) {
-
- /* (fe included to prevent random interference from the BE) */
- /* Copy the response message to FERing */
-
- DPRINTK("blktap: BERing[%u] -> FERing[%u]\n",
- (unsigned)i & (RING_SIZE(&blkif->blk_ring)-1),
- (unsigned)blkif->blk_ring.rsp_prod_pvt &
- (RING_SIZE((&blkif->blk_ring)-1)));
-
- write_resp_to_fe_ring(blkif, resp_s);
- kick_fe_domain(blkif);
-
- }
- }
-
- blktap_be_ring.rsp_cons = i;
-
-
- spin_unlock_irqrestore(&blkif_io_lock, flags);
-
- return IRQ_HANDLED;
-}
-
-/* Debug : print the current ring indices. */
-
-void print_be_ring_idxs(void)
-{
- if (blktap_be_ring.sring != NULL) {
- WPRINTK("BE Ring: \n--------\n");
- WPRINTK("BE: rsp_cons: %2d, req_prod_prv: %2d "
- "| req_prod: %2d, rsp_prod: %2d\n",
- blktap_be_ring.rsp_cons,
- blktap_be_ring.req_prod_pvt,
- blktap_be_ring.sring->req_prod,
- blktap_be_ring.sring->rsp_prod);
- }
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/blktap/blktap_userdev.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/blktap/blktap_userdev.c Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,478 +0,0 @@
-/******************************************************************************
- * blktap_userdev.c
- *
- * XenLinux virtual block-device tap.
- * Control interface between the driver and a character device.
- *
- * Copyright (c) 2004, Andrew Warfield
- *
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/fs.h>
-#include <linux/mm.h>
-#include <linux/miscdevice.h>
-#include <linux/errno.h>
-#include <linux/major.h>
-#include <linux/gfp.h>
-#include <linux/poll.h>
-#include <asm/pgalloc.h>
-#include <asm-xen/xen-public/io/blkif.h> /* for control ring. */
-
-#include "blktap.h"
-
-
-unsigned long blktap_mode = BLKTAP_MODE_PASSTHROUGH;
-
-/* Only one process may open /dev/xen/blktap at any time. */
-static unsigned long blktap_dev_inuse;
-unsigned long blktap_ring_ok; /* make this ring->state */
-
-/* for poll: */
-static wait_queue_head_t blktap_wait;
-
-/* Where things are inside the device mapping. */
-struct vm_area_struct *blktap_vma = NULL;
-unsigned long mmap_vstart;
-unsigned long rings_vstart;
-
-/* Rings up to user space. */
-static blkif_front_ring_t blktap_ufe_ring;
-static blkif_back_ring_t blktap_ube_ring;
-static ctrl_front_ring_t blktap_uctrl_ring;
-
-/* local prototypes */
-static int blktap_read_fe_ring(void);
-static int blktap_read_be_ring(void);
-
-/* -------[ blktap vm ops ]------------------------------------------- */
-
-static struct page *blktap_nopage(struct vm_area_struct *vma,
- unsigned long address,
- int *type)
-{
- /*
- * if the page has not been mapped in by the driver then generate
- * a SIGBUS to the domain.
- */
-
- force_sig(SIGBUS, current);
-
- return 0;
-}
-
-struct vm_operations_struct blktap_vm_ops = {
- nopage: blktap_nopage,
-};
-
-/* -------[ blktap file ops ]----------------------------------------- */
-
-static int blktap_open(struct inode *inode, struct file *filp)
-{
- blkif_sring_t *sring;
- ctrl_sring_t *csring;
-
- if ( test_and_set_bit(0, &blktap_dev_inuse) )
- return -EBUSY;
-
- printk(KERN_ALERT "blktap open.\n");
-
- /* Allocate the ctrl ring. */
- csring = (ctrl_sring_t *)get_zeroed_page(GFP_KERNEL);
- if (csring == NULL)
- goto fail_nomem;
-
- SetPageReserved(virt_to_page(csring));
-
- SHARED_RING_INIT(csring);
- FRONT_RING_INIT(&blktap_uctrl_ring, csring, PAGE_SIZE);
-
- /* Allocate the fe ring. */
- sring = (blkif_sring_t *)get_zeroed_page(GFP_KERNEL);
- if (sring == NULL)
- goto fail_free_ctrl;
-
- SetPageReserved(virt_to_page(sring));
-
- SHARED_RING_INIT(sring);
- FRONT_RING_INIT(&blktap_ufe_ring, sring, PAGE_SIZE);
-
- /* Allocate the be ring. */
- sring = (blkif_sring_t *)get_zeroed_page(GFP_KERNEL);
- if (sring == NULL)
- goto fail_free_fe;
-
- SetPageReserved(virt_to_page(sring));
-
- SHARED_RING_INIT(sring);
- BACK_RING_INIT(&blktap_ube_ring, sring, PAGE_SIZE);
-
- DPRINTK(KERN_ALERT "blktap open.\n");
-
- return 0;
-
- fail_free_ctrl:
- free_page( (unsigned long) blktap_uctrl_ring.sring);
-
- fail_free_fe:
- free_page( (unsigned long) blktap_ufe_ring.sring);
-
- fail_nomem:
- return -ENOMEM;
-}
-
-static int blktap_release(struct inode *inode, struct file *filp)
-{
- blktap_dev_inuse = 0;
- blktap_ring_ok = 0;
-
- printk(KERN_ALERT "blktap closed.\n");
-
- /* Free the ring page. */
- ClearPageReserved(virt_to_page(blktap_uctrl_ring.sring));
- free_page((unsigned long) blktap_uctrl_ring.sring);
-
- ClearPageReserved(virt_to_page(blktap_ufe_ring.sring));
- free_page((unsigned long) blktap_ufe_ring.sring);
-
- ClearPageReserved(virt_to_page(blktap_ube_ring.sring));
- free_page((unsigned long) blktap_ube_ring.sring);
-
- /* Clear any active mappings. */
- if (blktap_vma != NULL) {
- zap_page_range(blktap_vma, blktap_vma->vm_start,
- blktap_vma->vm_end - blktap_vma->vm_start, NULL);
- blktap_vma = NULL;
- }
-
- return 0;
-}
-
-/* Note on mmap:
- * remap_pfn_range sets VM_IO on vma->vm_flags. In trying to make libaio
- * work to do direct page access from userspace, this ended up being a
- * problem. The bigger issue seems to be that there is no way to map
- * a foreign page in to user space and have the virtual address of that
- * page map sanely down to a mfn.
- * Removing the VM_IO flag results in a loop in get_user_pages, as
- * pfn_valid() always fails on a foreign page.
- */
-static int blktap_mmap(struct file *filp, struct vm_area_struct *vma)
-{
- int size;
-
- printk(KERN_ALERT "blktap mmap (%lx, %lx)\n",
- vma->vm_start, vma->vm_end);
-
- vma->vm_ops = &blktap_vm_ops;
-
- size = vma->vm_end - vma->vm_start;
- if ( size != ( (MMAP_PAGES + RING_PAGES) << PAGE_SHIFT ) ) {
- printk(KERN_INFO
- "blktap: you _must_ map exactly %d pages!\n",
- MMAP_PAGES + RING_PAGES);
- return -EAGAIN;
- }
-
- size >>= PAGE_SHIFT;
- printk(KERN_INFO "blktap: 2 rings + %d pages.\n", size-1);
-
- rings_vstart = vma->vm_start;
- mmap_vstart = rings_vstart + (RING_PAGES << PAGE_SHIFT);
-
- /* Map the ring pages to the start of the region and reserve it. */
-
- /* not sure if I really need to do this... */
- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-
- DPRINTK("Mapping ctrl_ring page %lx.\n", __pa(blktap_uctrl_ring.sring));
- if (remap_pfn_range(vma, vma->vm_start,
- __pa(blktap_uctrl_ring.sring) >> PAGE_SHIFT,
- PAGE_SIZE, vma->vm_page_prot)) {
- WPRINTK("ctrl_ring: remap_pfn_range failure!\n");
- }
-
-
- DPRINTK("Mapping be_ring page %lx.\n", __pa(blktap_ube_ring.sring));
- if (remap_pfn_range(vma, vma->vm_start + PAGE_SIZE,
- __pa(blktap_ube_ring.sring) >> PAGE_SHIFT,
- PAGE_SIZE, vma->vm_page_prot)) {
- WPRINTK("be_ring: remap_pfn_range failure!\n");
- }
-
- DPRINTK("Mapping fe_ring page %lx.\n", __pa(blktap_ufe_ring.sring));
- if (remap_pfn_range(vma, vma->vm_start + ( 2 * PAGE_SIZE ),
- __pa(blktap_ufe_ring.sring) >> PAGE_SHIFT,
- PAGE_SIZE, vma->vm_page_prot)) {
- WPRINTK("fe_ring: remap_pfn_range failure!\n");
- }
-
- blktap_vma = vma;
- blktap_ring_ok = 1;
-
- return 0;
-}
-
-static int blktap_ioctl(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
-{
- switch(cmd) {
- case BLKTAP_IOCTL_KICK_FE: /* There are fe messages to process. */
- return blktap_read_fe_ring();
-
- case BLKTAP_IOCTL_KICK_BE: /* There are be messages to process. */
- return blktap_read_be_ring();
-
- case BLKTAP_IOCTL_SETMODE:
- if (BLKTAP_MODE_VALID(arg)) {
- blktap_mode = arg;
- /* XXX: may need to flush rings here. */
- printk(KERN_INFO "blktap: set mode to %lx\n", arg);
- return 0;
- }
- case BLKTAP_IOCTL_PRINT_IDXS:
- {
- print_be_ring_idxs();
- print_fe_ring_idxs();
- WPRINTK("User Rings: \n-----------\n");
- WPRINTK("UF: rsp_cons: %2d, req_prod_prv: %2d "
- "| req_prod: %2d, rsp_prod: %2d\n",
- blktap_ufe_ring.rsp_cons,
- blktap_ufe_ring.req_prod_pvt,
- blktap_ufe_ring.sring->req_prod,
- blktap_ufe_ring.sring->rsp_prod);
- WPRINTK("UB: req_cons: %2d, rsp_prod_prv: %2d "
- "| req_prod: %2d, rsp_prod: %2d\n",
- blktap_ube_ring.req_cons,
- blktap_ube_ring.rsp_prod_pvt,
- blktap_ube_ring.sring->req_prod,
- blktap_ube_ring.sring->rsp_prod);
-
- }
- }
- return -ENOIOCTLCMD;
-}
-
-static unsigned int blktap_poll(struct file *file, poll_table *wait)
-{
- poll_wait(file, &blktap_wait, wait);
-
- if ( RING_HAS_UNPUSHED_REQUESTS(&blktap_uctrl_ring) ||
- RING_HAS_UNPUSHED_REQUESTS(&blktap_ufe_ring) ||
- RING_HAS_UNPUSHED_RESPONSES(&blktap_ube_ring) ) {
-
- RING_PUSH_REQUESTS(&blktap_uctrl_ring);
- RING_PUSH_REQUESTS(&blktap_ufe_ring);
- RING_PUSH_RESPONSES(&blktap_ube_ring);
- return POLLIN | POLLRDNORM;
- }
-
- return 0;
-}
-
-void blktap_kick_user(void)
-{
- /* blktap_ring->req_prod = blktap_req_prod; */
- wake_up_interruptible(&blktap_wait);
-}
-
-static struct file_operations blktap_fops = {
- owner: THIS_MODULE,
- poll: blktap_poll,
- ioctl: blktap_ioctl,
- open: blktap_open,
- release: blktap_release,
- mmap: blktap_mmap,
-};
-
-/*-----[ Data to/from user space ]----------------------------------------*/
-
-
-int blktap_write_fe_ring(blkif_request_t *req)
-{
- blkif_request_t *target;
- int error, i;
-
- /*
- * This is called to pass a request from the real frontend domain's
- * blkif ring to the character device.
- */
-
- if ( ! blktap_ring_ok ) {
- DPRINTK("blktap: ufe_ring not ready for a request!\n");
- return 0;
- }
-
- if ( RING_FULL(&blktap_ufe_ring) ) {
- PRINTK("blktap: fe_ring is full, can't add.\n");
- return 0;
- }
-
- target = RING_GET_REQUEST(&blktap_ufe_ring,
- blktap_ufe_ring.req_prod_pvt);
- memcpy(target, req, sizeof(*req));
-
- /* Attempt to map the foreign pages directly in to the application */
- for (i=0; i<target->nr_segments; i++) {
-
- error = direct_remap_area_pages(blktap_vma->vm_mm,
- MMAP_VADDR(ID_TO_IDX(req->id), i),
- target->frame_and_sects[i] & PAGE_MASK,
- PAGE_SIZE,
- blktap_vma->vm_page_prot,
- ID_TO_DOM(req->id));
- if ( error != 0 ) {
- printk(KERN_INFO "remapping attached page failed! (%d)\n", error);
- /* the request is now dropped on the floor. */
- return 0;
- }
- }
-
- blktap_ufe_ring.req_prod_pvt++;
-
- return 0;
-}
-
-int blktap_write_be_ring(blkif_response_t *rsp)
-{
- blkif_response_t *target;
-
- /*
- * This is called to pass a request from the real backend domain's
- * blkif ring to the character device.
- */
-
- if ( ! blktap_ring_ok ) {
- DPRINTK("blktap: be_ring not ready for a request!\n");
- return 0;
- }
-
- /* No test for fullness in the response direction. */
-
- target = RING_GET_RESPONSE(&blktap_ube_ring,
- blktap_ube_ring.rsp_prod_pvt);
- memcpy(target, rsp, sizeof(*rsp));
-
- /* no mapping -- pages were mapped in blktap_write_fe_ring() */
-
- blktap_ube_ring.rsp_prod_pvt++;
-
- return 0;
-}
-
-static int blktap_read_fe_ring(void)
-{
- /* This is called to read responses from the UFE ring. */
-
- RING_IDX i, rp;
- blkif_response_t *resp_s;
- blkif_t *blkif;
- active_req_t *ar;
-
- DPRINTK("blktap_read_fe_ring()\n");
-
- /* if we are forwarding from UFERring to FERing */
- if (blktap_mode & BLKTAP_MODE_INTERCEPT_FE) {
-
- /* for each outstanding message on the UFEring */
- rp = blktap_ufe_ring.sring->rsp_prod;
- rmb();
-
- for ( i = blktap_ufe_ring.rsp_cons; i != rp; i++ )
- {
- resp_s = RING_GET_RESPONSE(&blktap_ufe_ring, i);
-
- DPRINTK("resp->fe_ring\n");
- ar = lookup_active_req(ID_TO_IDX(resp_s->id));
- blkif = ar->blkif;
- zap_page_range(blktap_vma, MMAP_VADDR(ID_TO_IDX(resp_s->id), 0),
- ar->nr_pages << PAGE_SHIFT, NULL);
- write_resp_to_fe_ring(blkif, resp_s);
- blktap_ufe_ring.rsp_cons = i + 1;
- kick_fe_domain(blkif);
- }
- }
- return 0;
-}
-
-static int blktap_read_be_ring(void)
-{
- /* This is called to read requests from the UBE ring. */
-
- RING_IDX i, rp;
- blkif_request_t *req_s;
-
- DPRINTK("blktap_read_be_ring()\n");
-
- /* if we are forwarding from UFERring to FERing */
- if (blktap_mode & BLKTAP_MODE_INTERCEPT_BE) {
-
- /* for each outstanding message on the UFEring */
- rp = blktap_ube_ring.sring->req_prod;
- rmb();
- for ( i = blktap_ube_ring.req_cons; i != rp; i++ )
- {
- req_s = RING_GET_REQUEST(&blktap_ube_ring, i);
-
- DPRINTK("req->be_ring\n");
- write_req_to_be_ring(req_s);
- kick_be_domain();
- }
-
- blktap_ube_ring.req_cons = i;
- }
-
- return 0;
-}
-
-int blktap_write_ctrl_ring(ctrl_msg_t *msg)
-{
- ctrl_msg_t *target;
-
- if ( ! blktap_ring_ok ) {
- DPRINTK("blktap: be_ring not ready for a request!\n");
- return 0;
- }
-
- /* No test for fullness in the response direction. */
-
- target = RING_GET_REQUEST(&blktap_uctrl_ring,
- blktap_uctrl_ring.req_prod_pvt);
- memcpy(target, msg, sizeof(*msg));
-
- blktap_uctrl_ring.req_prod_pvt++;
-
- /* currently treat the ring as unidirectional. */
- blktap_uctrl_ring.rsp_cons = blktap_uctrl_ring.sring->rsp_prod;
-
- return 0;
-
-}
-
-/* -------[ blktap module setup ]------------------------------------- */
-
-static struct miscdevice blktap_miscdev = {
- .minor = BLKTAP_MINOR,
- .name = "blktap",
- .fops = &blktap_fops,
- .devfs_name = "misc/blktap",
-};
-
-int blktap_init(void)
-{
- int err;
-
- err = misc_register(&blktap_miscdev);
- if ( err != 0 )
- {
- printk(KERN_ALERT "Couldn't register /dev/misc/blktap (%d)\n", err);
- return err;
- }
-
- init_waitqueue_head(&blktap_wait);
-
-
- return 0;
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/console/Makefile
--- a/linux-2.6.11-xen-sparse/drivers/xen/console/Makefile Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,2 +0,0 @@
-
-obj-y := console.o
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/console/console.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/console/console.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,811 +0,0 @@
-/******************************************************************************
- * console.c
- *
- * Virtual console driver.
- *
- * Copyright (c) 2002-2004, K A Fraser.
- *
- * This file may be distributed separately from the Linux kernel, or
- * incorporated into other software packages, subject to the following license:
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this source file (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use, copy, modify,
- * merge, publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-#include <linux/config.h>
-#include <linux/version.h>
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/serial.h>
-#include <linux/major.h>
-#include <linux/ptrace.h>
-#include <linux/ioport.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/init.h>
-#include <linux/console.h>
-#include <linux/bootmem.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/uaccess.h>
-#include <asm-xen/xen-public/event_channel.h>
-#include <asm-xen/hypervisor.h>
-#include <asm-xen/evtchn.h>
-#include <asm-xen/ctrl_if.h>
-
-/*
- * Modes:
- * 'xencons=off' [XC_OFF]: Console is disabled.
- * 'xencons=tty' [XC_TTY]: Console attached to '/dev/tty[0-9]+'.
- * 'xencons=ttyS' [XC_SERIAL]: Console attached to '/dev/ttyS[0-9]+'.
- * [XC_DEFAULT]: DOM0 -> XC_SERIAL ; all others -> XC_TTY.
- *
- * NB. In mode XC_TTY, we create dummy consoles for tty2-63. This suppresses
- * warnings from standard distro startup scripts.
- */
-static enum { XC_OFF, XC_DEFAULT, XC_TTY, XC_SERIAL } xc_mode = XC_DEFAULT;
-static int xc_num = -1;
-
-static int __init xencons_setup(char *str)
-{
- char *q;
- int n;
-
- if ( !strncmp(str, "ttyS", 4) )
- xc_mode = XC_SERIAL;
- else if ( !strncmp(str, "tty", 3) )
- xc_mode = XC_TTY;
- else if ( !strncmp(str, "off", 3) )
- xc_mode = XC_OFF;
-
- switch ( xc_mode )
- {
- case XC_SERIAL:
- n = simple_strtol( str+4, &q, 10 );
- if ( q > (str + 4) ) xc_num = n;
- break;
- case XC_TTY:
- n = simple_strtol( str+3, &q, 10 );
- if ( q > (str + 3) ) xc_num = n;
- break;
- default:
- break;
- }
-
- return 1;
-}
-__setup("xencons=", xencons_setup);
-
-/* The kernel and user-land drivers share a common transmit buffer. */
-static unsigned int wbuf_size = 4096;
-#define WBUF_MASK(_i) ((_i)&(wbuf_size-1))
-static char *wbuf;
-static unsigned int wc, wp; /* write_cons, write_prod */
-
-static int __init xencons_bufsz_setup(char *str)
-{
- unsigned int goal;
- goal = simple_strtoul(str, NULL, 0);
- while ( wbuf_size < goal )
- wbuf_size <<= 1;
- return 1;
-}
-__setup("xencons_bufsz=", xencons_bufsz_setup);
-
-/* This lock protects accesses to the common transmit buffer. */
-static spinlock_t xencons_lock = SPIN_LOCK_UNLOCKED;
-
-/* Common transmit-kick routine. */
-static void __xencons_tx_flush(void);
-
-/* This task is used to defer sending console data until there is space. */
-static void xencons_tx_flush_task_routine(void *data);
-
-static DECLARE_TQUEUE(xencons_tx_flush_task,
- xencons_tx_flush_task_routine,
- NULL);
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-static struct tty_driver *xencons_driver;
-#else
-static struct tty_driver xencons_driver;
-#endif
-
-
-/******************** Kernel console driver ********************************/
-
-static void kcons_write(
- struct console *c, const char *s, unsigned int count)
-{
- int i;
- unsigned long flags;
-
- spin_lock_irqsave(&xencons_lock, flags);
-
- for ( i = 0; i < count; i++ )
- {
- if ( (wp - wc) >= (wbuf_size - 1) )
- break;
- if ( (wbuf[WBUF_MASK(wp++)] = s[i]) == '\n' )
- wbuf[WBUF_MASK(wp++)] = '\r';
- }
-
- __xencons_tx_flush();
-
- spin_unlock_irqrestore(&xencons_lock, flags);
-}
-
-static void kcons_write_dom0(
- struct console *c, const char *s, unsigned int count)
-{
- int rc;
-
- while ( (count > 0) &&
- ((rc = HYPERVISOR_console_io(
- CONSOLEIO_write, count, (char *)s)) > 0) )
- {
- count -= rc;
- s += rc;
- }
-}
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-static struct tty_driver *kcons_device(struct console *c, int *index)
-{
- *index = c->index;
- return xencons_driver;
-}
-#else
-static kdev_t kcons_device(struct console *c)
-{
- return MKDEV(TTY_MAJOR, (xc_mode == XC_SERIAL) ? 64 : 1);
-}
-#endif
-
-static struct console kcons_info = {
- device: kcons_device,
- flags: CON_PRINTBUFFER,
- index: -1
-};
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-#define __RETCODE 0
-static int __init xen_console_init(void)
-#else
-#define __RETCODE
-void xen_console_init(void)
-#endif
-{
- if ( xen_start_info.flags & SIF_INITDOMAIN )
- {
- if ( xc_mode == XC_DEFAULT )
- xc_mode = XC_SERIAL;
- kcons_info.write = kcons_write_dom0;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
- if ( xc_mode == XC_SERIAL )
- kcons_info.flags |= CON_ENABLED;
-#endif
- }
- else
- {
- if ( xc_mode == XC_DEFAULT )
- xc_mode = XC_TTY;
- kcons_info.write = kcons_write;
- }
-
- switch ( xc_mode )
- {
- case XC_SERIAL:
- strcpy(kcons_info.name, "ttyS");
- if ( xc_num == -1 ) xc_num = 0;
- break;
-
- case XC_TTY:
- strcpy(kcons_info.name, "tty");
- if ( xc_num == -1 ) xc_num = 1;
- break;
-
- default:
- return __RETCODE;
- }
-
- wbuf = alloc_bootmem(wbuf_size);
-
- register_console(&kcons_info);
-
- return __RETCODE;
-}
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-console_initcall(xen_console_init);
-#endif
-
-/*** Useful function for console debugging -- goes straight to Xen. ***/
-asmlinkage int xprintk(const char *fmt, ...)
-{
- va_list args;
- int printk_len;
- static char printk_buf[1024];
-
- /* Emit the output into the temporary buffer */
- va_start(args, fmt);
- printk_len = vsnprintf(printk_buf, sizeof(printk_buf), fmt, args);
- va_end(args);
-
- /* Send the processed output directly to Xen. */
- kcons_write_dom0(NULL, printk_buf, printk_len);
-
- return 0;
-}
-
-/*** Forcibly flush console data before dying. ***/
-void xencons_force_flush(void)
-{
- ctrl_msg_t msg;
- int sz;
-
- /* Emergency console is synchronous, so there's nothing to flush. */
- if ( xen_start_info.flags & SIF_INITDOMAIN )
- return;
-
- /*
- * We use dangerous control-interface functions that require a quiescent
- * system and no interrupts. Try to ensure this with a global cli().
- */
- local_irq_disable(); /* XXXsmp */
-
- /* Spin until console data is flushed through to the domain controller. */
- while ( (wc != wp) && !ctrl_if_transmitter_empty() )
- {
- /* Interrupts are disabled -- we must manually reap responses. */
- ctrl_if_discard_responses();
-
- if ( (sz = wp - wc) == 0 )
- continue;
- if ( sz > sizeof(msg.msg) )
- sz = sizeof(msg.msg);
- if ( sz > (wbuf_size - WBUF_MASK(wc)) )
- sz = wbuf_size - WBUF_MASK(wc);
-
- msg.type = CMSG_CONSOLE;
- msg.subtype = CMSG_CONSOLE_DATA;
- msg.length = sz;
- memcpy(msg.msg, &wbuf[WBUF_MASK(wc)], sz);
-
- if ( ctrl_if_send_message_noblock(&msg, NULL, 0) == 0 )
- wc += sz;
- }
-}
-
-
-/******************** User-space console driver (/dev/console) ************/
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-#define DRV(_d) (_d)
-#define TTY_INDEX(_tty) ((_tty)->index)
-#else
-static int xencons_refcount;
-static struct tty_struct *xencons_table[MAX_NR_CONSOLES];
-#define DRV(_d) (&(_d))
-#define TTY_INDEX(_tty) (MINOR((_tty)->device) - xencons_driver.minor_start)
-#endif
-
-static struct termios *xencons_termios[MAX_NR_CONSOLES];
-static struct termios *xencons_termios_locked[MAX_NR_CONSOLES];
-static struct tty_struct *xencons_tty;
-static int xencons_priv_irq;
-static char x_char;
-
-/* Non-privileged receive callback. */
-static void xencons_rx(ctrl_msg_t *msg, unsigned long id)
-{
- int i;
- unsigned long flags;
-
- spin_lock_irqsave(&xencons_lock, flags);
- if ( xencons_tty != NULL )
- {
- for ( i = 0; i < msg->length; i++ )
- tty_insert_flip_char(xencons_tty, msg->msg[i], 0);
- tty_flip_buffer_push(xencons_tty);
- }
- spin_unlock_irqrestore(&xencons_lock, flags);
-
- msg->length = 0;
- ctrl_if_send_response(msg);
-}
-
-/* Privileged and non-privileged transmit worker. */
-static void __xencons_tx_flush(void)
-{
- int sz, work_done = 0;
- ctrl_msg_t msg;
-
- if ( xen_start_info.flags & SIF_INITDOMAIN )
- {
- if ( x_char )
- {
- kcons_write_dom0(NULL, &x_char, 1);
- x_char = 0;
- work_done = 1;
- }
-
- while ( wc != wp )
- {
- sz = wp - wc;
- if ( sz > (wbuf_size - WBUF_MASK(wc)) )
- sz = wbuf_size - WBUF_MASK(wc);
- kcons_write_dom0(NULL, &wbuf[WBUF_MASK(wc)], sz);
- wc += sz;
- work_done = 1;
- }
- }
- else
- {
- while ( x_char )
- {
- msg.type = CMSG_CONSOLE;
- msg.subtype = CMSG_CONSOLE_DATA;
- msg.length = 1;
- msg.msg[0] = x_char;
-
- if ( ctrl_if_send_message_noblock(&msg, NULL, 0) == 0 )
- x_char = 0;
- else if ( ctrl_if_enqueue_space_callback(&xencons_tx_flush_task) )
- break;
-
- work_done = 1;
- }
-
- while ( wc != wp )
- {
- sz = wp - wc;
- if ( sz > sizeof(msg.msg) )
- sz = sizeof(msg.msg);
- if ( sz > (wbuf_size - WBUF_MASK(wc)) )
- sz = wbuf_size - WBUF_MASK(wc);
-
- msg.type = CMSG_CONSOLE;
- msg.subtype = CMSG_CONSOLE_DATA;
- msg.length = sz;
- memcpy(msg.msg, &wbuf[WBUF_MASK(wc)], sz);
-
- if ( ctrl_if_send_message_noblock(&msg, NULL, 0) == 0 )
- wc += sz;
- else if ( ctrl_if_enqueue_space_callback(&xencons_tx_flush_task) )
- break;
-
- work_done = 1;
- }
- }
-
- if ( work_done && (xencons_tty != NULL) )
- {
- wake_up_interruptible(&xencons_tty->write_wait);
- if ( (xencons_tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
- (xencons_tty->ldisc.write_wakeup != NULL) )
- (xencons_tty->ldisc.write_wakeup)(xencons_tty);
- }
-}
-
-/* Non-privileged transmit kicker. */
-static void xencons_tx_flush_task_routine(void *data)
-{
- unsigned long flags;
- spin_lock_irqsave(&xencons_lock, flags);
- __xencons_tx_flush();
- spin_unlock_irqrestore(&xencons_lock, flags);
-}
-
-/* Privileged receive callback and transmit kicker. */
-static irqreturn_t xencons_priv_interrupt(int irq, void *dev_id,
- struct pt_regs *regs)
-{
- static char rbuf[16];
- int i, l;
- unsigned long flags;
-
- spin_lock_irqsave(&xencons_lock, flags);
-
- if ( xencons_tty != NULL )
- {
- /* Receive work. */
- while ( (l = HYPERVISOR_console_io(CONSOLEIO_read, 16, rbuf)) > 0 )
- for ( i = 0; i < l; i++ )
- tty_insert_flip_char(xencons_tty, rbuf[i], 0);
- if ( xencons_tty->flip.count != 0 )
- tty_flip_buffer_push(xencons_tty);
- }
-
- /* Transmit work. */
- __xencons_tx_flush();
-
- spin_unlock_irqrestore(&xencons_lock, flags);
-
- return IRQ_HANDLED;
-}
-
-static int xencons_write_room(struct tty_struct *tty)
-{
- return wbuf_size - (wp - wc);
-}
-
-static int xencons_chars_in_buffer(struct tty_struct *tty)
-{
- return wp - wc;
-}
-
-static void xencons_send_xchar(struct tty_struct *tty, char ch)
-{
- unsigned long flags;
-
- if ( TTY_INDEX(tty) != 0 )
- return;
-
- spin_lock_irqsave(&xencons_lock, flags);
- x_char = ch;
- __xencons_tx_flush();
- spin_unlock_irqrestore(&xencons_lock, flags);
-}
-
-static void xencons_throttle(struct tty_struct *tty)
-{
- if ( TTY_INDEX(tty) != 0 )
- return;
-
- if ( I_IXOFF(tty) )
- xencons_send_xchar(tty, STOP_CHAR(tty));
-}
-
-static void xencons_unthrottle(struct tty_struct *tty)
-{
- if ( TTY_INDEX(tty) != 0 )
- return;
-
- if ( I_IXOFF(tty) )
- {
- if ( x_char != 0 )
- x_char = 0;
- else
- xencons_send_xchar(tty, START_CHAR(tty));
- }
-}
-
-static void xencons_flush_buffer(struct tty_struct *tty)
-{
- unsigned long flags;
-
- if ( TTY_INDEX(tty) != 0 )
- return;
-
- spin_lock_irqsave(&xencons_lock, flags);
- wc = wp = 0;
- spin_unlock_irqrestore(&xencons_lock, flags);
-}
-
-static inline int __xencons_put_char(int ch)
-{
- char _ch = (char)ch;
- if ( (wp - wc) == wbuf_size )
- return 0;
- wbuf[WBUF_MASK(wp++)] = _ch;
- return 1;
-}
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-static int xencons_write(
- struct tty_struct *tty,
- const unsigned char *buf,
- int count)
-{
- int i;
- unsigned long flags;
-
- if ( TTY_INDEX(tty) != 0 )
- return count;
-
- spin_lock_irqsave(&xencons_lock, flags);
-
- for ( i = 0; i < count; i++ )
- if ( !__xencons_put_char(buf[i]) )
- break;
-
- if ( i != 0 )
- __xencons_tx_flush();
-
- spin_unlock_irqrestore(&xencons_lock, flags);
-
- return i;
-}
-#else
-static int xencons_write(
- struct tty_struct *tty,
- int from_user,
- const u_char *buf,
- int count)
-{
- int i;
- unsigned long flags;
-
- if ( from_user && verify_area(VERIFY_READ, buf, count) )
- return -EINVAL;
-
- if ( TTY_INDEX(tty) != 0 )
- return count;
-
- spin_lock_irqsave(&xencons_lock, flags);
-
- for ( i = 0; i < count; i++ )
- {
- char ch;
- if ( from_user )
- __get_user(ch, buf + i);
- else
- ch = buf[i];
- if ( !__xencons_put_char(ch) )
- break;
- }
-
- if ( i != 0 )
- __xencons_tx_flush();
-
- spin_unlock_irqrestore(&xencons_lock, flags);
-
- return i;
-}
-#endif
-
-static void xencons_put_char(struct tty_struct *tty, u_char ch)
-{
- unsigned long flags;
-
- if ( TTY_INDEX(tty) != 0 )
- return;
-
- spin_lock_irqsave(&xencons_lock, flags);
- (void)__xencons_put_char(ch);
- spin_unlock_irqrestore(&xencons_lock, flags);
-}
-
-static void xencons_flush_chars(struct tty_struct *tty)
-{
- unsigned long flags;
-
- if ( TTY_INDEX(tty) != 0 )
- return;
-
- spin_lock_irqsave(&xencons_lock, flags);
- __xencons_tx_flush();
- spin_unlock_irqrestore(&xencons_lock, flags);
-}
-
-static void xencons_wait_until_sent(struct tty_struct *tty, int timeout)
-{
- unsigned long orig_jiffies = jiffies;
-
- if ( TTY_INDEX(tty) != 0 )
- return;
-
- while ( DRV(tty->driver)->chars_in_buffer(tty) )
- {
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(1);
- if ( signal_pending(current) )
- break;
- if ( (timeout != 0) && time_after(jiffies, orig_jiffies + timeout) )
- break;
- }
-
- set_current_state(TASK_RUNNING);
-}
-
-static int xencons_open(struct tty_struct *tty, struct file *filp)
-{
- unsigned long flags;
-
- if ( TTY_INDEX(tty) != 0 )
- return 0;
-
- spin_lock_irqsave(&xencons_lock, flags);
- tty->driver_data = NULL;
- if ( xencons_tty == NULL )
- xencons_tty = tty;
- __xencons_tx_flush();
- spin_unlock_irqrestore(&xencons_lock, flags);
-
- return 0;
-}
-
-static void xencons_close(struct tty_struct *tty, struct file *filp)
-{
- unsigned long flags;
-
- if ( TTY_INDEX(tty) != 0 )
- return;
-
- if ( tty->count == 1 )
- {
- tty->closing = 1;
- tty_wait_until_sent(tty, 0);
- if ( DRV(tty->driver)->flush_buffer != NULL )
- DRV(tty->driver)->flush_buffer(tty);
- if ( tty->ldisc.flush_buffer != NULL )
- tty->ldisc.flush_buffer(tty);
- tty->closing = 0;
- spin_lock_irqsave(&xencons_lock, flags);
- xencons_tty = NULL;
- spin_unlock_irqrestore(&xencons_lock, flags);
- }
-}
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-static struct tty_operations xencons_ops = {
- .open = xencons_open,
- .close = xencons_close,
- .write = xencons_write,
- .write_room = xencons_write_room,
- .put_char = xencons_put_char,
- .flush_chars = xencons_flush_chars,
- .chars_in_buffer = xencons_chars_in_buffer,
- .send_xchar = xencons_send_xchar,
- .flush_buffer = xencons_flush_buffer,
- .throttle = xencons_throttle,
- .unthrottle = xencons_unthrottle,
- .wait_until_sent = xencons_wait_until_sent,
-};
-
-#ifdef CONFIG_XEN_PRIVILEGED_GUEST
-static const char *xennullcon_startup(void)
-{
- return NULL;
-}
-
-static int xennullcon_dummy(void)
-{
- return 0;
-}
-
-#define DUMMY (void *)xennullcon_dummy
-
-/*
- * The console `switch' structure for the dummy console
- *
- * Most of the operations are dummies.
- */
-
-const struct consw xennull_con = {
- .owner = THIS_MODULE,
- .con_startup = xennullcon_startup,
- .con_init = DUMMY,
- .con_deinit = DUMMY,
- .con_clear = DUMMY,
- .con_putc = DUMMY,
- .con_putcs = DUMMY,
- .con_cursor = DUMMY,
- .con_scroll = DUMMY,
- .con_bmove = DUMMY,
- .con_switch = DUMMY,
- .con_blank = DUMMY,
- .con_font_set = DUMMY,
- .con_font_get = DUMMY,
- .con_font_default = DUMMY,
- .con_font_copy = DUMMY,
- .con_set_palette = DUMMY,
- .con_scrolldelta = DUMMY,
-};
-#endif
-#endif
-
-static int __init xencons_init(void)
-{
- int rc;
-
- if ( xc_mode == XC_OFF )
- return 0;
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
- xencons_driver = alloc_tty_driver((xc_mode == XC_SERIAL) ?
- 1 : MAX_NR_CONSOLES);
- if ( xencons_driver == NULL )
- return -ENOMEM;
-#else
- memset(&xencons_driver, 0, sizeof(struct tty_driver));
- xencons_driver.magic = TTY_DRIVER_MAGIC;
- xencons_driver.refcount = &xencons_refcount;
- xencons_driver.table = xencons_table;
- xencons_driver.num = (xc_mode == XC_SERIAL) ? 1 : MAX_NR_CONSOLES;
-#endif
-
- DRV(xencons_driver)->major = TTY_MAJOR;
- DRV(xencons_driver)->type = TTY_DRIVER_TYPE_SERIAL;
- DRV(xencons_driver)->subtype = SERIAL_TYPE_NORMAL;
- DRV(xencons_driver)->init_termios = tty_std_termios;
- DRV(xencons_driver)->flags =
- TTY_DRIVER_REAL_RAW | TTY_DRIVER_RESET_TERMIOS | TTY_DRIVER_NO_DEVFS;
- DRV(xencons_driver)->termios = xencons_termios;
- DRV(xencons_driver)->termios_locked = xencons_termios_locked;
-
- if ( xc_mode == XC_SERIAL )
- {
- DRV(xencons_driver)->name = "ttyS";
- DRV(xencons_driver)->minor_start = 64 + xc_num;
- DRV(xencons_driver)->name_base = 0 + xc_num;
- }
- else
- {
- DRV(xencons_driver)->name = "tty";
- DRV(xencons_driver)->minor_start = xc_num;
- DRV(xencons_driver)->name_base = xc_num;
- }
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
- tty_set_operations(xencons_driver, &xencons_ops);
-#else
- xencons_driver.open = xencons_open;
- xencons_driver.close = xencons_close;
- xencons_driver.write = xencons_write;
- xencons_driver.write_room = xencons_write_room;
- xencons_driver.put_char = xencons_put_char;
- xencons_driver.flush_chars = xencons_flush_chars;
- xencons_driver.chars_in_buffer = xencons_chars_in_buffer;
- xencons_driver.send_xchar = xencons_send_xchar;
- xencons_driver.flush_buffer = xencons_flush_buffer;
- xencons_driver.throttle = xencons_throttle;
- xencons_driver.unthrottle = xencons_unthrottle;
- xencons_driver.wait_until_sent = xencons_wait_until_sent;
-#endif
-
- if ( (rc = tty_register_driver(DRV(xencons_driver))) != 0 )
- {
- printk("WARNING: Failed to register Xen virtual "
- "console driver as '%s%d'\n",
- DRV(xencons_driver)->name, DRV(xencons_driver)->name_base);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
- put_tty_driver(xencons_driver);
- xencons_driver = NULL;
-#endif
- return rc;
- }
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
- tty_register_device(xencons_driver, 0, NULL);
-#endif
-
- if ( xen_start_info.flags & SIF_INITDOMAIN )
- {
- xencons_priv_irq = bind_virq_to_irq(VIRQ_CONSOLE);
- (void)request_irq(xencons_priv_irq,
- xencons_priv_interrupt, 0, "console", NULL);
- }
- else
- {
- (void)ctrl_if_register_receiver(CMSG_CONSOLE, xencons_rx, 0);
- }
-
- printk("Xen virtual console successfully installed as %s%d\n",
- DRV(xencons_driver)->name,
- DRV(xencons_driver)->name_base );
-
- return 0;
-}
-
-module_init(xencons_init);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/evtchn/Makefile
--- a/linux-2.6.11-xen-sparse/drivers/xen/evtchn/Makefile Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,2 +0,0 @@
-
-obj-y := evtchn.o
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/evtchn/evtchn.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/evtchn/evtchn.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,430 +0,0 @@
-/******************************************************************************
- * evtchn.c
- *
- * Xenolinux driver for receiving and demuxing event-channel signals.
- *
- * Copyright (c) 2004, K A Fraser
- * Multi-process extensions Copyright (c) 2004, Steven Smith
- *
- * This file may be distributed separately from the Linux kernel, or
- * incorporated into other software packages, subject to the following license:
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this source file (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use, copy, modify,
- * merge, publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/errno.h>
-#include <linux/miscdevice.h>
-#include <linux/major.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/poll.h>
-#include <linux/irq.h>
-#include <linux/init.h>
-#define XEN_EVTCHN_MASK_OPS
-#include <asm-xen/evtchn.h>
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
-#include <linux/devfs_fs_kernel.h>
-#define OLD_DEVFS
-#else
-#include <linux/gfp.h>
-#endif
-
-#ifdef OLD_DEVFS
-/* NB. This must be shared amongst drivers if more things go in /dev/xen */
-static devfs_handle_t xen_dev_dir;
-#endif
-
-struct per_user_data {
- /* Notification ring, accessed via /dev/xen/evtchn. */
-# define EVTCHN_RING_SIZE 2048 /* 2048 16-bit entries */
-# define EVTCHN_RING_MASK(_i) ((_i)&(EVTCHN_RING_SIZE-1))
- u16 *ring;
- unsigned int ring_cons, ring_prod, ring_overflow;
-
- /* Processes wait on this queue when ring is empty. */
- wait_queue_head_t evtchn_wait;
- struct fasync_struct *evtchn_async_queue;
-};
-
-/* Who's bound to each port? */
-static struct per_user_data *port_user[NR_EVENT_CHANNELS];
-static spinlock_t port_user_lock;
-
-void evtchn_device_upcall(int port)
-{
- struct per_user_data *u;
-
- spin_lock(&port_user_lock);
-
- mask_evtchn(port);
- clear_evtchn(port);
-
- if ( (u = port_user[port]) != NULL )
- {
- if ( (u->ring_prod - u->ring_cons) < EVTCHN_RING_SIZE )
- {
- u->ring[EVTCHN_RING_MASK(u->ring_prod)] = (u16)port;
- if ( u->ring_cons == u->ring_prod++ )
- {
- wake_up_interruptible(&u->evtchn_wait);
- kill_fasync(&u->evtchn_async_queue, SIGIO, POLL_IN);
- }
- }
- else
- {
- u->ring_overflow = 1;
- }
- }
-
- spin_unlock(&port_user_lock);
-}
-
-static ssize_t evtchn_read(struct file *file, char *buf,
- size_t count, loff_t *ppos)
-{
- int rc;
- unsigned int c, p, bytes1 = 0, bytes2 = 0;
- DECLARE_WAITQUEUE(wait, current);
- struct per_user_data *u = file->private_data;
-
- add_wait_queue(&u->evtchn_wait, &wait);
-
- count &= ~1; /* even number of bytes */
-
- if ( count == 0 )
- {
- rc = 0;
- goto out;
- }
-
- if ( count > PAGE_SIZE )
- count = PAGE_SIZE;
-
- for ( ; ; )
- {
- set_current_state(TASK_INTERRUPTIBLE);
-
- if ( (c = u->ring_cons) != (p = u->ring_prod) )
- break;
-
- if ( u->ring_overflow )
- {
- rc = -EFBIG;
- goto out;
- }
-
- if ( file->f_flags & O_NONBLOCK )
- {
- rc = -EAGAIN;
- goto out;
- }
-
- if ( signal_pending(current) )
- {
- rc = -ERESTARTSYS;
- goto out;
- }
-
- schedule();
- }
-
- /* Byte lengths of two chunks. Chunk split (if any) is at ring wrap. */
- if ( ((c ^ p) & EVTCHN_RING_SIZE) != 0 )
- {
- bytes1 = (EVTCHN_RING_SIZE - EVTCHN_RING_MASK(c)) * sizeof(u16);
- bytes2 = EVTCHN_RING_MASK(p) * sizeof(u16);
- }
- else
- {
- bytes1 = (p - c) * sizeof(u16);
- bytes2 = 0;
- }
-
- /* Truncate chunks according to caller's maximum byte count. */
- if ( bytes1 > count )
- {
- bytes1 = count;
- bytes2 = 0;
- }
- else if ( (bytes1 + bytes2) > count )
- {
- bytes2 = count - bytes1;
- }
-
- if ( copy_to_user(buf, &u->ring[EVTCHN_RING_MASK(c)], bytes1) ||
- ((bytes2 != 0) && copy_to_user(&buf[bytes1], &u->ring[0], bytes2)) )
- {
- rc = -EFAULT;
- goto out;
- }
-
- u->ring_cons += (bytes1 + bytes2) / sizeof(u16);
-
- rc = bytes1 + bytes2;
-
- out:
- __set_current_state(TASK_RUNNING);
- remove_wait_queue(&u->evtchn_wait, &wait);
- return rc;
-}
-
-static ssize_t evtchn_write(struct file *file, const char *buf,
- size_t count, loff_t *ppos)
-{
- int rc, i;
- u16 *kbuf = (u16 *)__get_free_page(GFP_KERNEL);
- struct per_user_data *u = file->private_data;
-
- if ( kbuf == NULL )
- return -ENOMEM;
-
- count &= ~1; /* even number of bytes */
-
- if ( count == 0 )
- {
- rc = 0;
- goto out;
- }
-
- if ( count > PAGE_SIZE )
- count = PAGE_SIZE;
-
- if ( copy_from_user(kbuf, buf, count) != 0 )
- {
- rc = -EFAULT;
- goto out;
- }
-
- spin_lock_irq(&port_user_lock);
- for ( i = 0; i < (count/2); i++ )
- if ( (kbuf[i] < NR_EVENT_CHANNELS) && (port_user[kbuf[i]] == u) )
- unmask_evtchn(kbuf[i]);
- spin_unlock_irq(&port_user_lock);
-
- rc = count;
-
- out:
- free_page((unsigned long)kbuf);
- return rc;
-}
-
-static int evtchn_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- int rc = 0;
- struct per_user_data *u = file->private_data;
-
- spin_lock_irq(&port_user_lock);
-
- switch ( cmd )
- {
- case EVTCHN_RESET:
- /* Initialise the ring to empty. Clear errors. */
- u->ring_cons = u->ring_prod = u->ring_overflow = 0;
- break;
-
- case EVTCHN_BIND:
- if ( arg >= NR_EVENT_CHANNELS )
- {
- rc = -EINVAL;
- }
- else if ( port_user[arg] != NULL )
- {
- rc = -EISCONN;
- }
- else
- {
- port_user[arg] = u;
- unmask_evtchn(arg);
- }
- break;
-
- case EVTCHN_UNBIND:
- if ( arg >= NR_EVENT_CHANNELS )
- {
- rc = -EINVAL;
- }
- else if ( port_user[arg] != u )
- {
- rc = -ENOTCONN;
- }
- else
- {
- port_user[arg] = NULL;
- mask_evtchn(arg);
- }
- break;
-
- default:
- rc = -ENOSYS;
- break;
- }
-
- spin_unlock_irq(&port_user_lock);
-
- return rc;
-}
-
-static unsigned int evtchn_poll(struct file *file, poll_table *wait)
-{
- unsigned int mask = POLLOUT | POLLWRNORM;
- struct per_user_data *u = file->private_data;
-
- poll_wait(file, &u->evtchn_wait, wait);
- if ( u->ring_cons != u->ring_prod )
- mask |= POLLIN | POLLRDNORM;
- if ( u->ring_overflow )
- mask = POLLERR;
- return mask;
-}
-
-static int evtchn_fasync(int fd, struct file *filp, int on)
-{
- struct per_user_data *u = filp->private_data;
- return fasync_helper(fd, filp, on, &u->evtchn_async_queue);
-}
-
-static int evtchn_open(struct inode *inode, struct file *filp)
-{
- struct per_user_data *u;
-
- if ( (u = kmalloc(sizeof(*u), GFP_KERNEL)) == NULL )
- return -ENOMEM;
-
- memset(u, 0, sizeof(*u));
- init_waitqueue_head(&u->evtchn_wait);
-
- if ( (u->ring = (u16 *)__get_free_page(GFP_KERNEL)) == NULL )
- {
- kfree(u);
- return -ENOMEM;
- }
-
- filp->private_data = u;
-
- return 0;
-}
-
-static int evtchn_release(struct inode *inode, struct file *filp)
-{
- int i;
- struct per_user_data *u = filp->private_data;
-
- spin_lock_irq(&port_user_lock);
-
- free_page((unsigned long)u->ring);
-
- for ( i = 0; i < NR_EVENT_CHANNELS; i++ )
- {
- if ( port_user[i] == u )
- {
- port_user[i] = NULL;
- mask_evtchn(i);
- }
- }
-
- spin_unlock_irq(&port_user_lock);
-
- return 0;
-}
-
-static struct file_operations evtchn_fops = {
- owner: THIS_MODULE,
- read: evtchn_read,
- write: evtchn_write,
- ioctl: evtchn_ioctl,
- poll: evtchn_poll,
- fasync: evtchn_fasync,
- open: evtchn_open,
- release: evtchn_release
-};
-
-static struct miscdevice evtchn_miscdev = {
- .minor = EVTCHN_MINOR,
- .name = "evtchn",
- .fops = &evtchn_fops,
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
- .devfs_name = "misc/evtchn",
-#endif
-};
-
-static int __init evtchn_init(void)
-{
-#ifdef OLD_DEVFS
- devfs_handle_t symlink_handle;
- int pos;
- char link_dest[64];
-#endif
- int err;
-
- spin_lock_init(&port_user_lock);
- memset(port_user, 0, sizeof(port_user));
-
- /* (DEVFS) create '/dev/misc/evtchn'. */
- err = misc_register(&evtchn_miscdev);
- if ( err != 0 )
- {
- printk(KERN_ALERT "Could not register /dev/misc/evtchn\n");
- return err;
- }
-
-#ifdef OLD_DEVFS
- /* (DEVFS) create directory '/dev/xen'. */
- xen_dev_dir = devfs_mk_dir(NULL, "xen", NULL);
-
- /* (DEVFS) &link_dest[pos] == '../misc/evtchn'. */
- pos = devfs_generate_path(evtchn_miscdev.devfs_handle,
- &link_dest[3],
- sizeof(link_dest) - 3);
- if ( pos >= 0 )
- strncpy(&link_dest[pos], "../", 3);
-
- /* (DEVFS) symlink '/dev/xen/evtchn' -> '../misc/evtchn'. */
- (void)devfs_mk_symlink(xen_dev_dir,
- "evtchn",
- DEVFS_FL_DEFAULT,
- &link_dest[pos],
- &symlink_handle,
- NULL);
-
- /* (DEVFS) automatically destroy the symlink with its destination. */
- devfs_auto_unregister(evtchn_miscdev.devfs_handle, symlink_handle);
-#endif
-
- printk("Event-channel device installed.\n");
-
- return 0;
-}
-
-static void evtchn_cleanup(void)
-{
- misc_deregister(&evtchn_miscdev);
-}
-
-module_init(evtchn_init);
-module_exit(evtchn_cleanup);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/netback/Makefile
--- a/linux-2.6.11-xen-sparse/drivers/xen/netback/Makefile Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,2 +0,0 @@
-
-obj-y := netback.o control.o interface.o loopback.o
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/netback/common.h
--- a/linux-2.6.11-xen-sparse/drivers/xen/netback/common.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,103 +0,0 @@
-/******************************************************************************
- * arch/xen/drivers/netif/backend/common.h
- */
-
-#ifndef __NETIF__BACKEND__COMMON_H__
-#define __NETIF__BACKEND__COMMON_H__
-
-#include <linux/config.h>
-#include <linux/version.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/slab.h>
-#include <linux/ip.h>
-#include <linux/in.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <asm-xen/ctrl_if.h>
-#include <asm-xen/xen-public/io/netif.h>
-#include <asm/io.h>
-#include <asm/pgalloc.h>
-
-#if 0
-#define ASSERT(_p) \
- if ( !(_p) ) { printk("Assertion '%s' failed, line %d, file %s", #_p , \
- __LINE__, __FILE__); *(int*)0=0; }
-#define DPRINTK(_f, _a...) printk(KERN_ALERT "(file=%s, line=%d) " _f, \
- __FILE__ , __LINE__ , ## _a )
-#else
-#define ASSERT(_p) ((void)0)
-#define DPRINTK(_f, _a...) ((void)0)
-#endif
-
-typedef struct netif_st {
- /* Unique identifier for this interface. */
- domid_t domid;
- unsigned int handle;
-
- u8 fe_dev_addr[6];
-
- /* Physical parameters of the comms window. */
- unsigned long tx_shmem_frame;
- unsigned long rx_shmem_frame;
- unsigned int evtchn;
- int irq;
-
- /* The shared rings and indexes. */
- netif_tx_interface_t *tx;
- netif_rx_interface_t *rx;
-
- /* Private indexes into shared ring. */
- NETIF_RING_IDX rx_req_cons;
- NETIF_RING_IDX rx_resp_prod; /* private version of shared variable */
- NETIF_RING_IDX tx_req_cons;
- NETIF_RING_IDX tx_resp_prod; /* private version of shared variable */
-
- /* Transmit shaping: allow 'credit_bytes' every 'credit_usec'. */
- unsigned long credit_bytes;
- unsigned long credit_usec;
- unsigned long remaining_credit;
- struct timer_list credit_timeout;
-
- /* Miscellaneous private stuff. */
- enum { DISCONNECTED, DISCONNECTING, CONNECTED } status;
- int active;
- /*
- * DISCONNECT response is deferred until pending requests are ack'ed.
- * We therefore need to store the id from the original request.
- */
- u8 disconnect_rspid;
- struct netif_st *hash_next;
- struct list_head list; /* scheduling list */
- atomic_t refcnt;
- struct net_device *dev;
- struct net_device_stats stats;
-
- struct work_struct work;
-} netif_t;
-
-void netif_create(netif_be_create_t *create);
-void netif_destroy(netif_be_destroy_t *destroy);
-void netif_creditlimit(netif_be_creditlimit_t *creditlimit);
-void netif_connect(netif_be_connect_t *connect);
-int netif_disconnect(netif_be_disconnect_t *disconnect, u8 rsp_id);
-void netif_disconnect_complete(netif_t *netif);
-netif_t *netif_find_by_handle(domid_t domid, unsigned int handle);
-#define netif_get(_b) (atomic_inc(&(_b)->refcnt))
-#define netif_put(_b) \
- do { \
- if ( atomic_dec_and_test(&(_b)->refcnt) ) \
- netif_disconnect_complete(_b); \
- } while (0)
-
-void netif_interface_init(void);
-void netif_ctrlif_init(void);
-
-void netif_schedule_work(netif_t *netif);
-void netif_deschedule_work(netif_t *netif);
-
-int netif_be_start_xmit(struct sk_buff *skb, struct net_device *dev);
-struct net_device_stats *netif_be_get_stats(struct net_device *dev);
-irqreturn_t netif_be_int(int irq, void *dev_id, struct pt_regs *regs);
-
-#endif /* __NETIF__BACKEND__COMMON_H__ */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/netback/control.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/netback/control.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,58 +0,0 @@
-/******************************************************************************
- * arch/xen/drivers/netif/backend/control.c
- *
- * Routines for interfacing with the control plane.
- *
- * Copyright (c) 2004, Keir Fraser
- */
-
-#include "common.h"
-
-static void netif_ctrlif_rx(ctrl_msg_t *msg, unsigned long id)
-{
- DPRINTK("Received netif backend message, subtype=%d\n", msg->subtype);
-
- switch ( msg->subtype )
- {
- case CMSG_NETIF_BE_CREATE:
- netif_create((netif_be_create_t *)&msg->msg[0]);
- break;
- case CMSG_NETIF_BE_DESTROY:
- netif_destroy((netif_be_destroy_t *)&msg->msg[0]);
- break;
- case CMSG_NETIF_BE_CREDITLIMIT:
- netif_creditlimit((netif_be_creditlimit_t *)&msg->msg[0]);
- break;
- case CMSG_NETIF_BE_CONNECT:
- netif_connect((netif_be_connect_t *)&msg->msg[0]);
- break;
- case CMSG_NETIF_BE_DISCONNECT:
- if ( !netif_disconnect((netif_be_disconnect_t *)&msg->msg[0],msg->id) )
- return; /* Sending the response is deferred until later. */
- break;
- default:
- DPRINTK("Parse error while reading message subtype %d, len %d\n",
- msg->subtype, msg->length);
- msg->length = 0;
- break;
- }
-
- ctrl_if_send_response(msg);
-}
-
-void netif_ctrlif_init(void)
-{
- ctrl_msg_t cmsg;
- netif_be_driver_status_t st;
-
- (void)ctrl_if_register_receiver(CMSG_NETIF_BE, netif_ctrlif_rx,
- CALLBACK_IN_BLOCKING_CONTEXT);
-
- /* Send a driver-UP notification to the domain controller. */
- cmsg.type = CMSG_NETIF_BE;
- cmsg.subtype = CMSG_NETIF_BE_DRIVER_STATUS;
- cmsg.length = sizeof(netif_be_driver_status_t);
- st.status = NETIF_DRIVER_STATUS_UP;
- memcpy(cmsg.msg, &st, sizeof(st));
- ctrl_if_send_message_block(&cmsg, NULL, 0, TASK_UNINTERRUPTIBLE);
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/netback/interface.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/netback/interface.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,381 +0,0 @@
-/******************************************************************************
- * arch/xen/drivers/netif/backend/interface.c
- *
- * Network-device interface management.
- *
- * Copyright (c) 2004-2005, Keir Fraser
- */
-
-#include "common.h"
-#include <linux/rtnetlink.h>
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-#define VMALLOC_VMADDR(x) ((unsigned long)(x))
-#endif
-
-#define NETIF_HASHSZ 1024
-#define NETIF_HASH(_d,_h) (((int)(_d)^(int)(_h))&(NETIF_HASHSZ-1))
-
-static netif_t *netif_hash[NETIF_HASHSZ];
-
-netif_t *netif_find_by_handle(domid_t domid, unsigned int handle)
-{
- netif_t *netif = netif_hash[NETIF_HASH(domid, handle)];
- while ( (netif != NULL) &&
- ((netif->domid != domid) || (netif->handle != handle)) )
- netif = netif->hash_next;
- return netif;
-}
-
-static void __netif_up(netif_t *netif)
-{
- struct net_device *dev = netif->dev;
- spin_lock_bh(&dev->xmit_lock);
- netif->active = 1;
- spin_unlock_bh(&dev->xmit_lock);
- (void)request_irq(netif->irq, netif_be_int, 0, dev->name, netif);
- netif_schedule_work(netif);
-}
-
-static void __netif_down(netif_t *netif)
-{
- struct net_device *dev = netif->dev;
- spin_lock_bh(&dev->xmit_lock);
- netif->active = 0;
- spin_unlock_bh(&dev->xmit_lock);
- free_irq(netif->irq, netif);
- netif_deschedule_work(netif);
-}
-
-static int net_open(struct net_device *dev)
-{
- netif_t *netif = netdev_priv(dev);
- if ( netif->status == CONNECTED )
- __netif_up(netif);
- netif_start_queue(dev);
- return 0;
-}
-
-static int net_close(struct net_device *dev)
-{
- netif_t *netif = netdev_priv(dev);
- netif_stop_queue(dev);
- if ( netif->status == CONNECTED )
- __netif_down(netif);
- return 0;
-}
-
-static void __netif_disconnect_complete(void *arg)
-{
- netif_t *netif = (netif_t *)arg;
- ctrl_msg_t cmsg;
- netif_be_disconnect_t disc;
-
- /*
- * These can't be done in netif_disconnect() because at that point there
- * may be outstanding requests in the network stack whose asynchronous
- * responses must still be notified to the remote driver.
- */
- unbind_evtchn_from_irq(netif->evtchn);
- vfree(netif->tx); /* Frees netif->rx as well. */
-
- /* Construct the deferred response message. */
- cmsg.type = CMSG_NETIF_BE;
- cmsg.subtype = CMSG_NETIF_BE_DISCONNECT;
- cmsg.id = netif->disconnect_rspid;
- cmsg.length = sizeof(netif_be_disconnect_t);
- disc.domid = netif->domid;
- disc.netif_handle = netif->handle;
- disc.status = NETIF_BE_STATUS_OKAY;
- memcpy(cmsg.msg, &disc, sizeof(disc));
-
- /*
- * Make sure message is constructed /before/ status change, because
- * after the status change the 'netif' structure could be deallocated at
- * any time. Also make sure we send the response /after/ status change,
- * as otherwise a subsequent CONNECT request could spuriously fail if
- * another CPU doesn't see the status change yet.
- */
- mb();
- if ( netif->status != DISCONNECTING )
- BUG();
- netif->status = DISCONNECTED;
- mb();
-
- /* Send the successful response. */
- ctrl_if_send_response(&cmsg);
-}
-
-void netif_disconnect_complete(netif_t *netif)
-{
- INIT_WORK(&netif->work, __netif_disconnect_complete, (void *)netif);
- schedule_work(&netif->work);
-}
-
-void netif_create(netif_be_create_t *create)
-{
- int err = 0;
- domid_t domid = create->domid;
- unsigned int handle = create->netif_handle;
- struct net_device *dev;
- netif_t **pnetif, *netif;
- char name[IFNAMSIZ] = {};
-
- snprintf(name, IFNAMSIZ - 1, "vif%u.%u", domid, handle);
- dev = alloc_netdev(sizeof(netif_t), name, ether_setup);
- if ( dev == NULL )
- {
- DPRINTK("Could not create netif: out of memory\n");
- create->status = NETIF_BE_STATUS_OUT_OF_MEMORY;
- return;
- }
-
- netif = netdev_priv(dev);
- memset(netif, 0, sizeof(*netif));
- netif->domid = domid;
- netif->handle = handle;
- netif->status = DISCONNECTED;
- atomic_set(&netif->refcnt, 0);
- netif->dev = dev;
-
- netif->credit_bytes = netif->remaining_credit = ~0UL;
- netif->credit_usec = 0UL;
- init_timer(&netif->credit_timeout);
-
- pnetif = &netif_hash[NETIF_HASH(domid, handle)];
- while ( *pnetif != NULL )
- {
- if ( ((*pnetif)->domid == domid) && ((*pnetif)->handle == handle) )
- {
- DPRINTK("Could not create netif: already exists\n");
- create->status = NETIF_BE_STATUS_INTERFACE_EXISTS;
- free_netdev(dev);
- return;
- }
- pnetif = &(*pnetif)->hash_next;
- }
-
- dev->hard_start_xmit = netif_be_start_xmit;
- dev->get_stats = netif_be_get_stats;
- dev->open = net_open;
- dev->stop = net_close;
- dev->features = NETIF_F_NO_CSUM;
-
- /* Disable queuing. */
- dev->tx_queue_len = 0;
-
- if ( (create->be_mac[0] == 0) && (create->be_mac[1] == 0) &&
- (create->be_mac[2] == 0) && (create->be_mac[3] == 0) &&
- (create->be_mac[4] == 0) && (create->be_mac[5] == 0) )
- {
- /*
- * Initialise a dummy MAC address. We choose the numerically largest
- * non-broadcast address to prevent the address getting stolen by an
- * Ethernet bridge for STP purposes. (FE:FF:FF:FF:FF:FF)
- */
- memset(dev->dev_addr, 0xFF, ETH_ALEN);
- dev->dev_addr[0] &= ~0x01;
- }
- else
- {
- memcpy(dev->dev_addr, create->be_mac, ETH_ALEN);
- }
-
- memcpy(netif->fe_dev_addr, create->mac, ETH_ALEN);
-
- rtnl_lock();
- err = register_netdevice(dev);
- rtnl_unlock();
-
- if ( err != 0 )
- {
- DPRINTK("Could not register new net device %s: err=%d\n",
- dev->name, err);
- create->status = NETIF_BE_STATUS_OUT_OF_MEMORY;
- free_netdev(dev);
- return;
- }
-
- netif->hash_next = *pnetif;
- *pnetif = netif;
-
- DPRINTK("Successfully created netif\n");
- create->status = NETIF_BE_STATUS_OKAY;
-}
-
-void netif_destroy(netif_be_destroy_t *destroy)
-{
- domid_t domid = destroy->domid;
- unsigned int handle = destroy->netif_handle;
- netif_t **pnetif, *netif;
-
- pnetif = &netif_hash[NETIF_HASH(domid, handle)];
- while ( (netif = *pnetif) != NULL )
- {
- if ( (netif->domid == domid) && (netif->handle == handle) )
- {
- if ( netif->status != DISCONNECTED )
- goto still_connected;
- goto destroy;
- }
- pnetif = &netif->hash_next;
- }
-
- destroy->status = NETIF_BE_STATUS_INTERFACE_NOT_FOUND;
- return;
-
- still_connected:
- destroy->status = NETIF_BE_STATUS_INTERFACE_CONNECTED;
- return;
-
- destroy:
- *pnetif = netif->hash_next;
- unregister_netdev(netif->dev);
- free_netdev(netif->dev);
- destroy->status = NETIF_BE_STATUS_OKAY;
-}
-
-void netif_creditlimit(netif_be_creditlimit_t *creditlimit)
-{
- domid_t domid = creditlimit->domid;
- unsigned int handle = creditlimit->netif_handle;
- netif_t *netif;
-
- netif = netif_find_by_handle(domid, handle);
- if ( unlikely(netif == NULL) )
- {
- DPRINTK("netif_creditlimit attempted for non-existent netif"
- " (%u,%u)\n", creditlimit->domid, creditlimit->netif_handle);
- creditlimit->status = NETIF_BE_STATUS_INTERFACE_NOT_FOUND;
- return;
- }
-
- /* Set the credit limit (reset remaining credit to new limit). */
- netif->credit_bytes = netif->remaining_credit = creditlimit->credit_bytes;
- netif->credit_usec = creditlimit->period_usec;
-
- if ( netif->status == CONNECTED )
- {
- /*
- * Schedule work so that any packets waiting under previous credit
- * limit are dealt with (acts like a replenishment point).
- */
- netif->credit_timeout.expires = jiffies;
- netif_schedule_work(netif);
- }
-
- creditlimit->status = NETIF_BE_STATUS_OKAY;
-}
-
-void netif_connect(netif_be_connect_t *connect)
-{
- domid_t domid = connect->domid;
- unsigned int handle = connect->netif_handle;
- unsigned int evtchn = connect->evtchn;
- unsigned long tx_shmem_frame = connect->tx_shmem_frame;
- unsigned long rx_shmem_frame = connect->rx_shmem_frame;
- struct vm_struct *vma;
- pgprot_t prot;
- int error;
- netif_t *netif;
-
- netif = netif_find_by_handle(domid, handle);
- if ( unlikely(netif == NULL) )
- {
- DPRINTK("netif_connect attempted for non-existent netif (%u,%u)\n",
- connect->domid, connect->netif_handle);
- connect->status = NETIF_BE_STATUS_INTERFACE_NOT_FOUND;
- return;
- }
-
- if ( netif->status != DISCONNECTED )
- {
- connect->status = NETIF_BE_STATUS_INTERFACE_CONNECTED;
- return;
- }
-
- if ( (vma = get_vm_area(2*PAGE_SIZE, VM_IOREMAP)) == NULL )
- {
- connect->status = NETIF_BE_STATUS_OUT_OF_MEMORY;
- return;
- }
-
- prot = __pgprot(_KERNPG_TABLE);
- error = direct_remap_area_pages(&init_mm,
- VMALLOC_VMADDR(vma->addr),
- tx_shmem_frame<<PAGE_SHIFT, PAGE_SIZE,
- prot, domid);
- error |= direct_remap_area_pages(&init_mm,
- VMALLOC_VMADDR(vma->addr) + PAGE_SIZE,
- rx_shmem_frame<<PAGE_SHIFT, PAGE_SIZE,
- prot, domid);
- if ( error != 0 )
- {
- if ( error == -ENOMEM )
- connect->status = NETIF_BE_STATUS_OUT_OF_MEMORY;
- else if ( error == -EFAULT )
- connect->status = NETIF_BE_STATUS_MAPPING_ERROR;
- else
- connect->status = NETIF_BE_STATUS_ERROR;
- vfree(vma->addr);
- return;
- }
-
- netif->evtchn = evtchn;
- netif->irq = bind_evtchn_to_irq(evtchn);
- netif->tx_shmem_frame = tx_shmem_frame;
- netif->rx_shmem_frame = rx_shmem_frame;
- netif->tx =
- (netif_tx_interface_t *)vma->addr;
- netif->rx =
- (netif_rx_interface_t *)((char *)vma->addr + PAGE_SIZE);
- netif->tx->resp_prod = netif->rx->resp_prod = 0;
- netif_get(netif);
- wmb(); /* Other CPUs see new state before interface is started. */
-
- rtnl_lock();
- netif->status = CONNECTED;
- wmb();
- if ( netif_running(netif->dev) )
- __netif_up(netif);
- rtnl_unlock();
-
- connect->status = NETIF_BE_STATUS_OKAY;
-}
-
-int netif_disconnect(netif_be_disconnect_t *disconnect, u8 rsp_id)
-{
- domid_t domid = disconnect->domid;
- unsigned int handle = disconnect->netif_handle;
- netif_t *netif;
-
- netif = netif_find_by_handle(domid, handle);
- if ( unlikely(netif == NULL) )
- {
- DPRINTK("netif_disconnect attempted for non-existent netif"
- " (%u,%u)\n", disconnect->domid, disconnect->netif_handle);
- disconnect->status = NETIF_BE_STATUS_INTERFACE_NOT_FOUND;
- return 1; /* Caller will send response error message. */
- }
-
- if ( netif->status == CONNECTED )
- {
- rtnl_lock();
- netif->status = DISCONNECTING;
- netif->disconnect_rspid = rsp_id;
- wmb();
- if ( netif_running(netif->dev) )
- __netif_down(netif);
- rtnl_unlock();
- netif_put(netif);
- return 0; /* Caller should not send response message. */
- }
-
- disconnect->status = NETIF_BE_STATUS_OKAY;
- return 1;
-}
-
-void netif_interface_init(void)
-{
- memset(netif_hash, 0, sizeof(netif_hash));
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/netback/loopback.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/netback/loopback.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,164 +0,0 @@
-/******************************************************************************
- * netback/loopback.c
- *
- * A two-interface loopback device to emulate a local netfront-netback
- * connection. This ensures that local packet delivery looks identical
- * to inter-domain delivery. Most importantly, packets delivered locally
- * originating from other domains will get *copied* when they traverse this
- * driver. This prevents unbounded delays in socket-buffer queues from
- * causing the netback driver to "seize up".
- *
- * This driver creates a symmetric pair of loopback interfaces with names
- * vif0.0 and veth0. The intention is that 'vif0.0' is bound to an Ethernet
- * bridge, just like a proper netback interface, while a local IP interface
- * is configured on 'veth0'.
- *
- * As with a real netback interface, vif0.0 is configured with a suitable
- * dummy MAC address. No default is provided for veth0: a reasonable strategy
- * is to transfer eth0's MAC address to veth0, and give eth0 a dummy address
- * (to avoid confusing the Etherbridge).
- *
- * Copyright (c) 2005 K A Fraser
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/netdevice.h>
-#include <linux/inetdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <net/dst.h>
-
-struct net_private {
- struct net_device *loopback_dev;
- struct net_device_stats stats;
-};
-
-static int loopback_open(struct net_device *dev)
-{
- struct net_private *np = netdev_priv(dev);
- memset(&np->stats, 0, sizeof(np->stats));
- netif_start_queue(dev);
- return 0;
-}
-
-static int loopback_close(struct net_device *dev)
-{
- netif_stop_queue(dev);
- return 0;
-}
-
-static int loopback_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- struct net_private *np = netdev_priv(dev);
-
- dst_release(skb->dst);
- skb->dst = NULL;
-
- skb_orphan(skb);
-
- np->stats.tx_bytes += skb->len;
- np->stats.tx_packets++;
-
- /* Switch to loopback context. */
- dev = np->loopback_dev;
- np = netdev_priv(dev);
-
- np->stats.rx_bytes += skb->len;
- np->stats.rx_packets++;
-
- if ( skb->ip_summed == CHECKSUM_HW )
- {
- /* Defer checksum calculation. */
- skb->proto_csum_blank = 1;
- /* Must be a local packet: assert its integrity. */
- skb->proto_csum_valid = 1;
- }
-
- skb->ip_summed = skb->proto_csum_valid ?
- CHECKSUM_UNNECESSARY : CHECKSUM_NONE;
-
- skb->pkt_type = PACKET_HOST; /* overridden by eth_type_trans() */
- skb->protocol = eth_type_trans(skb, dev);
- skb->dev = dev;
- dev->last_rx = jiffies;
- netif_rx(skb);
-
- return 0;
-}
-
-static struct net_device_stats *loopback_get_stats(struct net_device *dev)
-{
- struct net_private *np = netdev_priv(dev);
- return &np->stats;
-}
-
-static void loopback_construct(struct net_device *dev, struct net_device *lo)
-{
- struct net_private *np = netdev_priv(dev);
-
- np->loopback_dev = lo;
-
- dev->open = loopback_open;
- dev->stop = loopback_close;
- dev->hard_start_xmit = loopback_start_xmit;
- dev->get_stats = loopback_get_stats;
-
- dev->tx_queue_len = 0;
-
- dev->features = NETIF_F_HIGHDMA | NETIF_F_LLTX;
-
- /*
- * We do not set a jumbo MTU on the interface. Otherwise the network
- * stack will try to send large packets that will get dropped by the
- * Ethernet bridge (unless the physical Ethernet interface is configured
- * to transfer jumbo packets). If a larger MTU is desired then the system
- * administrator can specify it using the 'ifconfig' command.
- */
- /*dev->mtu = 16*1024;*/
-}
-
-static int __init loopback_init(void)
-{
- struct net_device *dev1, *dev2;
- int err = -ENOMEM;
-
- dev1 = alloc_netdev(sizeof(struct net_private), "vif0.0", ether_setup);
- dev2 = alloc_netdev(sizeof(struct net_private), "veth0", ether_setup);
- if ( (dev1 == NULL) || (dev2 == NULL) )
- goto fail;
-
- loopback_construct(dev1, dev2);
- loopback_construct(dev2, dev1);
-
- dev1->features |= NETIF_F_NO_CSUM;
- dev2->features |= NETIF_F_IP_CSUM;
-
- /*
- * Initialise a dummy MAC address for the 'dummy backend' interface. We
- * choose the numerically largest non-broadcast address to prevent the
- * address getting stolen by an Ethernet bridge for STP purposes.
- */
- memset(dev1->dev_addr, 0xFF, ETH_ALEN);
- dev1->dev_addr[0] &= ~0x01;
-
- if ( (err = register_netdev(dev1)) != 0 )
- goto fail;
-
- if ( (err = register_netdev(dev2)) != 0 )
- {
- unregister_netdev(dev1);
- goto fail;
- }
-
- return 0;
-
- fail:
- if ( dev1 != NULL )
- kfree(dev1);
- if ( dev2 != NULL )
- kfree(dev2);
- return err;
-}
-
-module_init(loopback_init);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/netback/netback.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/netback/netback.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,823 +0,0 @@
-/******************************************************************************
- * drivers/xen/netback/netback.c
- *
- * Back-end of the driver for virtual network devices. This portion of the
- * driver exports a 'unified' network-device interface that can be accessed
- * by any operating system that implements a compatible front end. A
- * reference front-end implementation can be found in:
- * drivers/xen/netfront/netfront.c
- *
- * Copyright (c) 2002-2005, K A Fraser
- */
-
-#include "common.h"
-#include <asm-xen/balloon.h>
-#include <asm-xen/evtchn.h>
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
-#include <linux/delay.h>
-#endif
-
-static void netif_idx_release(u16 pending_idx);
-static void netif_page_release(struct page *page);
-static void make_tx_response(netif_t *netif,
- u16 id,
- s8 st);
-static int make_rx_response(netif_t *netif,
- u16 id,
- s8 st,
- memory_t addr,
- u16 size,
- u16 csum_valid);
-
-static void net_tx_action(unsigned long unused);
-static DECLARE_TASKLET(net_tx_tasklet, net_tx_action, 0);
-
-static void net_rx_action(unsigned long unused);
-static DECLARE_TASKLET(net_rx_tasklet, net_rx_action, 0);
-
-static struct timer_list net_timer;
-
-static struct sk_buff_head rx_queue;
-static multicall_entry_t rx_mcl[NETIF_RX_RING_SIZE*2+1];
-static mmu_update_t rx_mmu[NETIF_RX_RING_SIZE];
-static struct mmuext_op rx_mmuext[NETIF_RX_RING_SIZE];
-static unsigned char rx_notify[NR_EVENT_CHANNELS];
-
-/* Don't currently gate addition of an interface to the tx scheduling list. */
-#define tx_work_exists(_if) (1)
-
-#define MAX_PENDING_REQS 256
-static unsigned long mmap_vstart;
-#define MMAP_VADDR(_req) (mmap_vstart + ((_req) * PAGE_SIZE))
-
-#define PKT_PROT_LEN 64
-
-static struct {
- netif_tx_request_t req;
- netif_t *netif;
-} pending_tx_info[MAX_PENDING_REQS];
-static u16 pending_ring[MAX_PENDING_REQS];
-typedef unsigned int PEND_RING_IDX;
-#define MASK_PEND_IDX(_i) ((_i)&(MAX_PENDING_REQS-1))
-static PEND_RING_IDX pending_prod, pending_cons;
-#define NR_PENDING_REQS (MAX_PENDING_REQS - pending_prod + pending_cons)
-
-/* Freed TX SKBs get batched on this ring before return to pending_ring. */
-static u16 dealloc_ring[MAX_PENDING_REQS];
-static PEND_RING_IDX dealloc_prod, dealloc_cons;
-
-static struct sk_buff_head tx_queue;
-static multicall_entry_t tx_mcl[MAX_PENDING_REQS];
-
-static struct list_head net_schedule_list;
-static spinlock_t net_schedule_list_lock;
-
-#define MAX_MFN_ALLOC 64
-static unsigned long mfn_list[MAX_MFN_ALLOC];
-static unsigned int alloc_index = 0;
-static spinlock_t mfn_lock = SPIN_LOCK_UNLOCKED;
-
-static unsigned long alloc_mfn(void)
-{
- unsigned long mfn = 0, flags;
- spin_lock_irqsave(&mfn_lock, flags);
- if ( unlikely(alloc_index == 0) )
- alloc_index = HYPERVISOR_dom_mem_op(
- MEMOP_increase_reservation, mfn_list, MAX_MFN_ALLOC, 0);
- if ( alloc_index != 0 )
- mfn = mfn_list[--alloc_index];
- spin_unlock_irqrestore(&mfn_lock, flags);
- return mfn;
-}
-
-static void free_mfn(unsigned long mfn)
-{
- unsigned long flags;
- spin_lock_irqsave(&mfn_lock, flags);
- if ( alloc_index != MAX_MFN_ALLOC )
- mfn_list[alloc_index++] = mfn;
- else if ( HYPERVISOR_dom_mem_op(MEMOP_decrease_reservation,
- &mfn, 1, 0) != 1 )
- BUG();
- spin_unlock_irqrestore(&mfn_lock, flags);
-}
-
-static inline void maybe_schedule_tx_action(void)
-{
- smp_mb();
- if ( (NR_PENDING_REQS < (MAX_PENDING_REQS/2)) &&
- !list_empty(&net_schedule_list) )
- tasklet_schedule(&net_tx_tasklet);
-}
-
-/*
- * A gross way of confirming the origin of an skb data page. The slab
- * allocator abuses a field in the page struct to cache the kmem_cache_t ptr.
- */
-static inline int is_xen_skb(struct sk_buff *skb)
-{
- extern kmem_cache_t *skbuff_cachep;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
- kmem_cache_t *cp = (kmem_cache_t *)virt_to_page(skb->head)->lru.next;
-#else
- kmem_cache_t *cp = (kmem_cache_t *)virt_to_page(skb->head)->list.next;
-#endif
- return (cp == skbuff_cachep);
-}
-
-int netif_be_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- netif_t *netif = netdev_priv(dev);
-
- ASSERT(skb->dev == dev);
-
- /* Drop the packet if the target domain has no receive buffers. */
- if ( !netif->active ||
- (netif->rx_req_cons == netif->rx->req_prod) ||
- ((netif->rx_req_cons-netif->rx_resp_prod) == NETIF_RX_RING_SIZE) )
- goto drop;
-
- /*
- * We do not copy the packet unless:
- * 1. The data is shared; or
- * 2. The data is not allocated from our special cache.
- * NB. We also couldn't cope with fragmented packets, but we won't get
- * any because we not advertise the NETIF_F_SG feature.
- */
- if ( skb_shared(skb) || skb_cloned(skb) || !is_xen_skb(skb) )
- {
- int hlen = skb->data - skb->head;
- struct sk_buff *nskb = dev_alloc_skb(hlen + skb->len);
- if ( unlikely(nskb == NULL) )
- goto drop;
- skb_reserve(nskb, hlen);
- __skb_put(nskb, skb->len);
- if (skb_copy_bits(skb, -hlen, nskb->data - hlen, skb->len + hlen))
- BUG();
- nskb->dev = skb->dev;
- nskb->proto_csum_valid = skb->proto_csum_valid;
- dev_kfree_skb(skb);
- skb = nskb;
- }
-
- netif->rx_req_cons++;
- netif_get(netif);
-
- skb_queue_tail(&rx_queue, skb);
- tasklet_schedule(&net_rx_tasklet);
-
- return 0;
-
- drop:
- netif->stats.tx_dropped++;
- dev_kfree_skb(skb);
- return 0;
-}
-
-#if 0
-static void xen_network_done_notify(void)
-{
- static struct net_device *eth0_dev = NULL;
- if ( unlikely(eth0_dev == NULL) )
- eth0_dev = __dev_get_by_name("eth0");
- netif_rx_schedule(eth0_dev);
-}
-/*
- * Add following to poll() function in NAPI driver (Tigon3 is example):
- * if ( xen_network_done() )
- * tg3_enable_ints(tp);
- */
-int xen_network_done(void)
-{
- return skb_queue_empty(&rx_queue);
-}
-#endif
-
-static void net_rx_action(unsigned long unused)
-{
- netif_t *netif;
- s8 status;
- u16 size, id, evtchn;
- multicall_entry_t *mcl;
- mmu_update_t *mmu;
- struct mmuext_op *mmuext;
- unsigned long vdata, mdata, new_mfn;
- struct sk_buff_head rxq;
- struct sk_buff *skb;
- u16 notify_list[NETIF_RX_RING_SIZE];
- int notify_nr = 0;
-
- skb_queue_head_init(&rxq);
-
- mcl = rx_mcl;
- mmu = rx_mmu;
- mmuext = rx_mmuext;
- while ( (skb = skb_dequeue(&rx_queue)) != NULL )
- {
- netif = netdev_priv(skb->dev);
- vdata = (unsigned long)skb->data;
- mdata = virt_to_machine(vdata);
-
- /* Memory squeeze? Back off for an arbitrary while. */
- if ( (new_mfn = alloc_mfn()) == 0 )
- {
- if ( net_ratelimit() )
- printk(KERN_WARNING "Memory squeeze in netback driver.\n");
- mod_timer(&net_timer, jiffies + HZ);
- skb_queue_head(&rx_queue, skb);
- break;
- }
-
- /*
- * Set the new P2M table entry before reassigning the old data page.
- * Heed the comment in pgtable-2level.h:pte_page(). :-)
- */
- phys_to_machine_mapping[__pa(skb->data) >> PAGE_SHIFT] = new_mfn;
-
- MULTI_update_va_mapping(mcl, vdata,
- pfn_pte_ma(new_mfn, PAGE_KERNEL), 0);
- mcl++;
-
- mcl->op = __HYPERVISOR_mmuext_op;
- mcl->args[0] = (unsigned long)mmuext;
- mcl->args[1] = 1;
- mcl->args[2] = 0;
- mcl->args[3] = netif->domid;
- mcl++;
-
- mmuext->cmd = MMUEXT_REASSIGN_PAGE;
- mmuext->mfn = mdata >> PAGE_SHIFT;
- mmuext++;
-
- mmu->ptr = (new_mfn << PAGE_SHIFT) | MMU_MACHPHYS_UPDATE;
- mmu->val = __pa(vdata) >> PAGE_SHIFT;
- mmu++;
-
- __skb_queue_tail(&rxq, skb);
-
- /* Filled the batch queue? */
- if ( (mcl - rx_mcl) == ARRAY_SIZE(rx_mcl) )
- break;
- }
-
- if ( mcl == rx_mcl )
- return;
-
- mcl->op = __HYPERVISOR_mmu_update;
- mcl->args[0] = (unsigned long)rx_mmu;
- mcl->args[1] = mmu - rx_mmu;
- mcl->args[2] = 0;
- mcl->args[3] = DOMID_SELF;
- mcl++;
-
- mcl[-3].args[2] = UVMF_TLB_FLUSH|UVMF_ALL;
- if ( unlikely(HYPERVISOR_multicall(rx_mcl, mcl - rx_mcl) != 0) )
- BUG();
-
- mcl = rx_mcl;
- mmuext = rx_mmuext;
- while ( (skb = __skb_dequeue(&rxq)) != NULL )
- {
- netif = netdev_priv(skb->dev);
- size = skb->tail - skb->data;
-
- /* Rederive the machine addresses. */
- new_mfn = mcl[0].args[1] >> PAGE_SHIFT;
- mdata = ((mmuext[0].mfn << PAGE_SHIFT) |
- ((unsigned long)skb->data & ~PAGE_MASK));
-
- atomic_set(&(skb_shinfo(skb)->dataref), 1);
- skb_shinfo(skb)->nr_frags = 0;
- skb_shinfo(skb)->frag_list = NULL;
-
- netif->stats.tx_bytes += size;
- netif->stats.tx_packets++;
-
- /* The update_va_mapping() must not fail. */
- BUG_ON(mcl[0].result != 0);
-
- /* Check the reassignment error code. */
- status = NETIF_RSP_OKAY;
- if ( unlikely(mcl[1].result != 0) )
- {
- DPRINTK("Failed MMU update transferring to DOM%u\n", netif->domid);
- free_mfn(mdata >> PAGE_SHIFT);
- status = NETIF_RSP_ERROR;
- }
-
- evtchn = netif->evtchn;
- id = netif->rx->ring[MASK_NETIF_RX_IDX(netif->rx_resp_prod)].req.id;
- if ( make_rx_response(netif, id, status, mdata,
- size, skb->proto_csum_valid) &&
- (rx_notify[evtchn] == 0) )
- {
- rx_notify[evtchn] = 1;
- notify_list[notify_nr++] = evtchn;
- }
-
- netif_put(netif);
- dev_kfree_skb(skb);
-
- mcl += 2;
- mmuext += 1;
- }
-
- while ( notify_nr != 0 )
- {
- evtchn = notify_list[--notify_nr];
- rx_notify[evtchn] = 0;
- notify_via_evtchn(evtchn);
- }
-
- /* More work to do? */
- if ( !skb_queue_empty(&rx_queue) && !timer_pending(&net_timer) )
- tasklet_schedule(&net_rx_tasklet);
-#if 0
- else
- xen_network_done_notify();
-#endif
-}
-
-static void net_alarm(unsigned long unused)
-{
- tasklet_schedule(&net_rx_tasklet);
-}
-
-struct net_device_stats *netif_be_get_stats(struct net_device *dev)
-{
- netif_t *netif = netdev_priv(dev);
- return &netif->stats;
-}
-
-static int __on_net_schedule_list(netif_t *netif)
-{
- return netif->list.next != NULL;
-}
-
-static void remove_from_net_schedule_list(netif_t *netif)
-{
- spin_lock_irq(&net_schedule_list_lock);
- if ( likely(__on_net_schedule_list(netif)) )
- {
- list_del(&netif->list);
- netif->list.next = NULL;
- netif_put(netif);
- }
- spin_unlock_irq(&net_schedule_list_lock);
-}
-
-static void add_to_net_schedule_list_tail(netif_t *netif)
-{
- if ( __on_net_schedule_list(netif) )
- return;
-
- spin_lock_irq(&net_schedule_list_lock);
- if ( !__on_net_schedule_list(netif) && netif->active )
- {
- list_add_tail(&netif->list, &net_schedule_list);
- netif_get(netif);
- }
- spin_unlock_irq(&net_schedule_list_lock);
-}
-
-void netif_schedule_work(netif_t *netif)
-{
- if ( (netif->tx_req_cons != netif->tx->req_prod) &&
- ((netif->tx_req_cons-netif->tx_resp_prod) != NETIF_TX_RING_SIZE) )
- {
- add_to_net_schedule_list_tail(netif);
- maybe_schedule_tx_action();
- }
-}
-
-void netif_deschedule_work(netif_t *netif)
-{
- remove_from_net_schedule_list(netif);
-}
-
-
-static void tx_credit_callback(unsigned long data)
-{
- netif_t *netif = (netif_t *)data;
- netif->remaining_credit = netif->credit_bytes;
- netif_schedule_work(netif);
-}
-
-static void net_tx_action(unsigned long unused)
-{
- struct list_head *ent;
- struct sk_buff *skb;
- netif_t *netif;
- netif_tx_request_t txreq;
- u16 pending_idx;
- NETIF_RING_IDX i;
- multicall_entry_t *mcl;
- PEND_RING_IDX dc, dp;
- unsigned int data_len;
-
- if ( (dc = dealloc_cons) == (dp = dealloc_prod) )
- goto skip_dealloc;
-
- mcl = tx_mcl;
- while ( dc != dp )
- {
- pending_idx = dealloc_ring[MASK_PEND_IDX(dc++)];
- MULTI_update_va_mapping(mcl, MMAP_VADDR(pending_idx),
- __pte(0), 0);
- mcl++;
- }
-
- mcl[-1].args[2] = UVMF_TLB_FLUSH|UVMF_ALL;
- if ( unlikely(HYPERVISOR_multicall(tx_mcl, mcl - tx_mcl) != 0) )
- BUG();
-
- mcl = tx_mcl;
- while ( dealloc_cons != dp )
- {
- /* The update_va_mapping() must not fail. */
- BUG_ON(mcl[0].result != 0);
-
- pending_idx = dealloc_ring[MASK_PEND_IDX(dealloc_cons++)];
-
- netif = pending_tx_info[pending_idx].netif;
-
- make_tx_response(netif, pending_tx_info[pending_idx].req.id,
- NETIF_RSP_OKAY);
-
- pending_ring[MASK_PEND_IDX(pending_prod++)] = pending_idx;
-
- /*
- * Scheduling checks must happen after the above response is posted.
- * This avoids a possible race with a guest OS on another CPU if that
- * guest is testing against 'resp_prod' when deciding whether to notify
- * us when it queues additional packets.
- */
- mb();
- if ( (netif->tx_req_cons != netif->tx->req_prod) &&
- ((netif->tx_req_cons-netif->tx_resp_prod) != NETIF_TX_RING_SIZE) )
- add_to_net_schedule_list_tail(netif);
-
- netif_put(netif);
-
- mcl++;
- }
-
- skip_dealloc:
- mcl = tx_mcl;
- while ( (NR_PENDING_REQS < MAX_PENDING_REQS) &&
- !list_empty(&net_schedule_list) )
- {
- /* Get a netif from the list with work to do. */
- ent = net_schedule_list.next;
- netif = list_entry(ent, netif_t, list);
- netif_get(netif);
- remove_from_net_schedule_list(netif);
-
- /* Work to do? */
- i = netif->tx_req_cons;
- if ( (i == netif->tx->req_prod) ||
- ((i-netif->tx_resp_prod) == NETIF_TX_RING_SIZE) )
- {
- netif_put(netif);
- continue;
- }
-
- rmb(); /* Ensure that we see the request before we copy it. */
- memcpy(&txreq, &netif->tx->ring[MASK_NETIF_TX_IDX(i)].req,
- sizeof(txreq));
-
- /* Credit-based scheduling. */
- if ( txreq.size > netif->remaining_credit )
- {
- unsigned long now = jiffies;
- unsigned long next_credit =
- netif->credit_timeout.expires +
- msecs_to_jiffies(netif->credit_usec / 1000);
-
- /* Timer could already be pending in some rare cases. */
- if ( timer_pending(&netif->credit_timeout) )
- break;
-
- /* Already passed the point at which we can replenish credit? */
- if ( time_after_eq(now, next_credit) )
- {
- netif->credit_timeout.expires = now;
- netif->remaining_credit = netif->credit_bytes;
- }
-
- /* Still too big to send right now? Then set a timer callback. */
- if ( txreq.size > netif->remaining_credit )
- {
- netif->remaining_credit = 0;
- netif->credit_timeout.expires = next_credit;
- netif->credit_timeout.data = (unsigned long)netif;
- netif->credit_timeout.function = tx_credit_callback;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
- add_timer_on(&netif->credit_timeout, smp_processor_id());
-#else
- add_timer(&netif->credit_timeout);
-#endif
- break;
- }
- }
- netif->remaining_credit -= txreq.size;
-
- /*
- * Why the barrier? It ensures that the frontend sees updated req_cons
- * before we check for more work to schedule.
- */
- netif->tx->req_cons = ++netif->tx_req_cons;
- mb();
-
- netif_schedule_work(netif);
-
- if ( unlikely(txreq.size < ETH_HLEN) ||
- unlikely(txreq.size > ETH_FRAME_LEN) )
- {
- DPRINTK("Bad packet size: %d\n", txreq.size);
- make_tx_response(netif, txreq.id, NETIF_RSP_ERROR);
- netif_put(netif);
- continue;
- }
-
- /* No crossing a page boundary as the payload mustn't fragment. */
- if ( unlikely(((txreq.addr & ~PAGE_MASK) + txreq.size) >= PAGE_SIZE) )
- {
- DPRINTK("txreq.addr: %lx, size: %u, end: %lu\n",
- txreq.addr, txreq.size,
- (txreq.addr &~PAGE_MASK) + txreq.size);
- make_tx_response(netif, txreq.id, NETIF_RSP_ERROR);
- netif_put(netif);
- continue;
- }
-
- pending_idx = pending_ring[MASK_PEND_IDX(pending_cons)];
-
- data_len = (txreq.size > PKT_PROT_LEN) ? PKT_PROT_LEN : txreq.size;
-
- if ( unlikely((skb = alloc_skb(data_len+16, GFP_ATOMIC)) == NULL) )
- {
- DPRINTK("Can't allocate a skb in start_xmit.\n");
- make_tx_response(netif, txreq.id, NETIF_RSP_ERROR);
- netif_put(netif);
- break;
- }
-
- /* Packets passed to netif_rx() must have some headroom. */
- skb_reserve(skb, 16);
-
- MULTI_update_va_mapping_otherdomain(
- mcl, MMAP_VADDR(pending_idx),
- pfn_pte_ma(txreq.addr >> PAGE_SHIFT, PAGE_KERNEL),
- 0, netif->domid);
- mcl++;
-
- memcpy(&pending_tx_info[pending_idx].req, &txreq, sizeof(txreq));
- pending_tx_info[pending_idx].netif = netif;
- *((u16 *)skb->data) = pending_idx;
-
- __skb_queue_tail(&tx_queue, skb);
-
- pending_cons++;
-
- /* Filled the batch queue? */
- if ( (mcl - tx_mcl) == ARRAY_SIZE(tx_mcl) )
- break;
- }
-
- if ( mcl == tx_mcl )
- return;
-
- if ( unlikely(HYPERVISOR_multicall(tx_mcl, mcl - tx_mcl) != 0) )
- BUG();
-
- mcl = tx_mcl;
- while ( (skb = __skb_dequeue(&tx_queue)) != NULL )
- {
- pending_idx = *((u16 *)skb->data);
- netif = pending_tx_info[pending_idx].netif;
- memcpy(&txreq, &pending_tx_info[pending_idx].req, sizeof(txreq));
-
- /* Check the remap error code. */
- if ( unlikely(mcl[0].result != 0) )
- {
- DPRINTK("Bad page frame\n");
- make_tx_response(netif, txreq.id, NETIF_RSP_ERROR);
- netif_put(netif);
- kfree_skb(skb);
- mcl++;
- pending_ring[MASK_PEND_IDX(pending_prod++)] = pending_idx;
- continue;
- }
-
- phys_to_machine_mapping[__pa(MMAP_VADDR(pending_idx)) >> PAGE_SHIFT] =
- FOREIGN_FRAME(txreq.addr >> PAGE_SHIFT);
-
- data_len = (txreq.size > PKT_PROT_LEN) ? PKT_PROT_LEN : txreq.size;
-
- __skb_put(skb, data_len);
- memcpy(skb->data,
- (void *)(MMAP_VADDR(pending_idx)|(txreq.addr&~PAGE_MASK)),
- data_len);
-
- if ( data_len < txreq.size )
- {
- /* Append the packet payload as a fragment. */
- skb_shinfo(skb)->frags[0].page =
- virt_to_page(MMAP_VADDR(pending_idx));
- skb_shinfo(skb)->frags[0].size = txreq.size - data_len;
- skb_shinfo(skb)->frags[0].page_offset =
- (txreq.addr + data_len) & ~PAGE_MASK;
- skb_shinfo(skb)->nr_frags = 1;
- }
- else
- {
- /* Schedule a response immediately. */
- netif_idx_release(pending_idx);
- }
-
- skb->data_len = txreq.size - data_len;
- skb->len += skb->data_len;
-
- skb->dev = netif->dev;
- skb->protocol = eth_type_trans(skb, skb->dev);
-
- /* No checking needed on localhost, but remember the field is blank. */
- skb->ip_summed = CHECKSUM_UNNECESSARY;
- skb->proto_csum_valid = 1;
- skb->proto_csum_blank = txreq.csum_blank;
-
- netif->stats.rx_bytes += txreq.size;
- netif->stats.rx_packets++;
-
- netif_rx(skb);
- netif->dev->last_rx = jiffies;
-
- mcl++;
- }
-}
-
-static void netif_idx_release(u16 pending_idx)
-{
- static spinlock_t _lock = SPIN_LOCK_UNLOCKED;
- unsigned long flags;
-
- spin_lock_irqsave(&_lock, flags);
- dealloc_ring[MASK_PEND_IDX(dealloc_prod++)] = pending_idx;
- spin_unlock_irqrestore(&_lock, flags);
-
- tasklet_schedule(&net_tx_tasklet);
-}
-
-static void netif_page_release(struct page *page)
-{
- u16 pending_idx = page - virt_to_page(mmap_vstart);
-
- /* Ready for next use. */
- set_page_count(page, 1);
-
- netif_idx_release(pending_idx);
-}
-
-irqreturn_t netif_be_int(int irq, void *dev_id, struct pt_regs *regs)
-{
- netif_t *netif = dev_id;
- if ( tx_work_exists(netif) )
- {
- add_to_net_schedule_list_tail(netif);
- maybe_schedule_tx_action();
- }
- return IRQ_HANDLED;
-}
-
-static void make_tx_response(netif_t *netif,
- u16 id,
- s8 st)
-{
- NETIF_RING_IDX i = netif->tx_resp_prod;
- netif_tx_response_t *resp;
-
- resp = &netif->tx->ring[MASK_NETIF_TX_IDX(i)].resp;
- resp->id = id;
- resp->status = st;
- wmb();
- netif->tx->resp_prod = netif->tx_resp_prod = ++i;
-
- mb(); /* Update producer before checking event threshold. */
- if ( i == netif->tx->event )
- notify_via_evtchn(netif->evtchn);
-}
-
-static int make_rx_response(netif_t *netif,
- u16 id,
- s8 st,
- memory_t addr,
- u16 size,
- u16 csum_valid)
-{
- NETIF_RING_IDX i = netif->rx_resp_prod;
- netif_rx_response_t *resp;
-
- resp = &netif->rx->ring[MASK_NETIF_RX_IDX(i)].resp;
- resp->addr = addr;
- resp->csum_valid = csum_valid;
- resp->id = id;
- resp->status = (s16)size;
- if ( st < 0 )
- resp->status = (s16)st;
- wmb();
- netif->rx->resp_prod = netif->rx_resp_prod = ++i;
-
- mb(); /* Update producer before checking event threshold. */
- return (i == netif->rx->event);
-}
-
-static irqreturn_t netif_be_dbg(int irq, void *dev_id, struct pt_regs *regs)
-{
- struct list_head *ent;
- netif_t *netif;
- int i = 0;
-
- printk(KERN_ALERT "netif_schedule_list:\n");
- spin_lock_irq(&net_schedule_list_lock);
-
- list_for_each ( ent, &net_schedule_list )
- {
- netif = list_entry(ent, netif_t, list);
- printk(KERN_ALERT " %d: private(rx_req_cons=%08x rx_resp_prod=%08x\n",
- i, netif->rx_req_cons, netif->rx_resp_prod);
- printk(KERN_ALERT " tx_req_cons=%08x tx_resp_prod=%08x)\n",
- netif->tx_req_cons, netif->tx_resp_prod);
- printk(KERN_ALERT " shared(rx_req_prod=%08x rx_resp_prod=%08x\n",
- netif->rx->req_prod, netif->rx->resp_prod);
- printk(KERN_ALERT " rx_event=%08x tx_req_prod=%08x\n",
- netif->rx->event, netif->tx->req_prod);
- printk(KERN_ALERT " tx_resp_prod=%08x, tx_event=%08x)\n",
- netif->tx->resp_prod, netif->tx->event);
- i++;
- }
-
- spin_unlock_irq(&net_schedule_list_lock);
- printk(KERN_ALERT " ** End of netif_schedule_list **\n");
-
- return IRQ_HANDLED;
-}
-
-static int __init netback_init(void)
-{
- int i;
- struct page *page;
-
- if ( !(xen_start_info.flags & SIF_NET_BE_DOMAIN) &&
- !(xen_start_info.flags & SIF_INITDOMAIN) )
- return 0;
-
- printk("Initialising Xen netif backend\n");
-
- /* We can increase reservation by this much in net_rx_action(). */
- balloon_update_driver_allowance(NETIF_RX_RING_SIZE);
-
- skb_queue_head_init(&rx_queue);
- skb_queue_head_init(&tx_queue);
-
- init_timer(&net_timer);
- net_timer.data = 0;
- net_timer.function = net_alarm;
-
- netif_interface_init();
-
- mmap_vstart = allocate_empty_lowmem_region(MAX_PENDING_REQS);
- BUG_ON(mmap_vstart == 0);
-
- for ( i = 0; i < MAX_PENDING_REQS; i++ )
- {
- page = virt_to_page(MMAP_VADDR(i));
- set_page_count(page, 1);
- SetPageForeign(page, netif_page_release);
- }
-
- pending_cons = 0;
- pending_prod = MAX_PENDING_REQS;
- for ( i = 0; i < MAX_PENDING_REQS; i++ )
- pending_ring[i] = i;
-
- spin_lock_init(&net_schedule_list_lock);
- INIT_LIST_HEAD(&net_schedule_list);
-
- netif_ctrlif_init();
-
- (void)request_irq(bind_virq_to_irq(VIRQ_DEBUG),
- netif_be_dbg, SA_SHIRQ,
- "net-be-dbg", &netif_be_dbg);
-
- return 0;
-}
-
-static void netback_cleanup(void)
-{
- BUG();
-}
-
-module_init(netback_init);
-module_exit(netback_cleanup);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/netfront/Kconfig
--- a/linux-2.6.11-xen-sparse/drivers/xen/netfront/Kconfig Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,6 +0,0 @@
-
-config XENNET
- tristate "Xen network driver"
- depends on NETDEVICES && ARCH_XEN
- help
- Network driver for Xen
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/netfront/Makefile
--- a/linux-2.6.11-xen-sparse/drivers/xen/netfront/Makefile Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,2 +0,0 @@
-
-obj-y := netfront.o
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/netfront/netfront.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/netfront/netfront.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,1480 +0,0 @@
-/******************************************************************************
- * Virtual network driver for conversing with remote driver backends.
- *
- * Copyright (c) 2002-2004, K A Fraser
- *
- * This file may be distributed separately from the Linux kernel, or
- * incorporated into other software packages, subject to the following license:
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this source file (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use, copy, modify,
- * merge, publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/version.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/netdevice.h>
-#include <linux/inetdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/init.h>
-#include <linux/bitops.h>
-#include <linux/proc_fs.h>
-#include <linux/ethtool.h>
-#include <net/sock.h>
-#include <net/pkt_sched.h>
-#include <net/arp.h>
-#include <net/route.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
-#include <asm-xen/evtchn.h>
-#include <asm-xen/ctrl_if.h>
-#include <asm-xen/xen-public/io/netif.h>
-#include <asm-xen/balloon.h>
-#include <asm/page.h>
-#include <asm/uaccess.h>
-
-#ifndef __GFP_NOWARN
-#define __GFP_NOWARN 0
-#endif
-#define alloc_xen_skb(_l) __dev_alloc_skb((_l), GFP_ATOMIC|__GFP_NOWARN)
-
-#define init_skb_shinfo(_skb) \
- do { \
- atomic_set(&(skb_shinfo(_skb)->dataref), 1); \
- skb_shinfo(_skb)->nr_frags = 0; \
- skb_shinfo(_skb)->frag_list = NULL; \
- } while (0)
-
-/* Allow headroom on each rx pkt for Ethernet header, alignment padding, ... */
-#define RX_HEADROOM 200
-
-/*
- * If the backend driver is pipelining transmit requests then we can be very
- * aggressive in avoiding new-packet notifications -- only need to send a
- * notification if there are no outstanding unreceived responses.
- * If the backend may be buffering our transmit buffers for any reason then we
- * are rather more conservative.
- */
-#ifdef CONFIG_XEN_NETDEV_FRONTEND_PIPELINED_TRANSMITTER
-#define TX_TEST_IDX resp_prod /* aggressive: any outstanding responses? */
-#else
-#define TX_TEST_IDX req_cons /* conservative: not seen all our requests? */
-#endif
-
-static void network_tx_buf_gc(struct net_device *dev);
-static void network_alloc_rx_buffers(struct net_device *dev);
-
-static unsigned long rx_pfn_array[NETIF_RX_RING_SIZE];
-static multicall_entry_t rx_mcl[NETIF_RX_RING_SIZE+1];
-static mmu_update_t rx_mmu[NETIF_RX_RING_SIZE];
-
-#ifdef CONFIG_PROC_FS
-static int xennet_proc_init(void);
-static int xennet_proc_addif(struct net_device *dev);
-static void xennet_proc_delif(struct net_device *dev);
-#else
-#define xennet_proc_init() (0)
-#define xennet_proc_addif(d) (0)
-#define xennet_proc_delif(d) ((void)0)
-#endif
-
-static struct list_head dev_list;
-
-struct net_private
-{
- struct list_head list;
- struct net_device *dev;
-
- struct net_device_stats stats;
- NETIF_RING_IDX rx_resp_cons, tx_resp_cons;
- unsigned int tx_full;
-
- netif_tx_interface_t *tx;
- netif_rx_interface_t *rx;
-
- spinlock_t tx_lock;
- spinlock_t rx_lock;
-
- unsigned int handle;
- unsigned int evtchn;
- unsigned int irq;
-
- /* What is the status of our connection to the remote backend? */
-#define BEST_CLOSED 0
-#define BEST_DISCONNECTED 1
-#define BEST_CONNECTED 2
- unsigned int backend_state;
-
- /* Is this interface open or closed (down or up)? */
-#define UST_CLOSED 0
-#define UST_OPEN 1
- unsigned int user_state;
-
- /* Receive-ring batched refills. */
-#define RX_MIN_TARGET 8
-#define RX_MAX_TARGET NETIF_RX_RING_SIZE
- int rx_min_target, rx_max_target, rx_target;
- struct sk_buff_head rx_batch;
-
- /*
- * {tx,rx}_skbs store outstanding skbuffs. The first entry in each
- * array is an index into a chain of free entries.
- */
- struct sk_buff *tx_skbs[NETIF_TX_RING_SIZE+1];
- struct sk_buff *rx_skbs[NETIF_RX_RING_SIZE+1];
-};
-
-/* Access macros for acquiring freeing slots in {tx,rx}_skbs[]. */
-#define ADD_ID_TO_FREELIST(_list, _id) \
- (_list)[(_id)] = (_list)[0]; \
- (_list)[0] = (void *)(unsigned long)(_id);
-#define GET_ID_FROM_FREELIST(_list) \
- ({ unsigned long _id = (unsigned long)(_list)[0]; \
- (_list)[0] = (_list)[_id]; \
- (unsigned short)_id; })
-
-static char *status_name[] = {
- [NETIF_INTERFACE_STATUS_CLOSED] = "closed",
- [NETIF_INTERFACE_STATUS_DISCONNECTED] = "disconnected",
- [NETIF_INTERFACE_STATUS_CONNECTED] = "connected",
- [NETIF_INTERFACE_STATUS_CHANGED] = "changed",
-};
-
-static char *be_state_name[] = {
- [BEST_CLOSED] = "closed",
- [BEST_DISCONNECTED] = "disconnected",
- [BEST_CONNECTED] = "connected",
-};
-
-#if DEBUG
-#define DPRINTK(fmt, args...) \
- printk(KERN_ALERT "xen_net (%s:%d) " fmt, __FUNCTION__, __LINE__, ##args)
-#else
-#define DPRINTK(fmt, args...) ((void)0)
-#endif
-#define IPRINTK(fmt, args...) \
- printk(KERN_INFO "xen_net: " fmt, ##args)
-#define WPRINTK(fmt, args...) \
- printk(KERN_WARNING "xen_net: " fmt, ##args)
-
-static struct net_device *find_dev_by_handle(unsigned int handle)
-{
- struct list_head *ent;
- struct net_private *np;
- list_for_each (ent, &dev_list) {
- np = list_entry(ent, struct net_private, list);
- if (np->handle == handle)
- return np->dev;
- }
- return NULL;
-}
-
-/** Network interface info. */
-struct netif_ctrl {
- /** Number of interfaces. */
- int interface_n;
- /** Number of connected interfaces. */
- int connected_n;
- /** Error code. */
- int err;
- int up;
-};
-
-static struct netif_ctrl netctrl;
-
-static void netctrl_init(void)
-{
- memset(&netctrl, 0, sizeof(netctrl));
- netctrl.up = NETIF_DRIVER_STATUS_DOWN;
-}
-
-/** Get or set a network interface error.
- */
-static int netctrl_err(int err)
-{
- if ((err < 0) && !netctrl.err)
- netctrl.err = err;
- return netctrl.err;
-}
-
-/** Test if all network interfaces are connected.
- *
- * @return 1 if all connected, 0 if not, negative error code otherwise
- */
-static int netctrl_connected(void)
-{
- int ok;
-
- if (netctrl.err)
- ok = netctrl.err;
- else if (netctrl.up == NETIF_DRIVER_STATUS_UP)
- ok = (netctrl.connected_n == netctrl.interface_n);
- else
- ok = 0;
-
- return ok;
-}
-
-/** Count the connected network interfaces.
- *
- * @return connected count
- */
-static int netctrl_connected_count(void)
-{
-
- struct list_head *ent;
- struct net_private *np;
- unsigned int connected;
-
- connected = 0;
-
- list_for_each(ent, &dev_list) {
- np = list_entry(ent, struct net_private, list);
- if (np->backend_state == BEST_CONNECTED)
- connected++;
- }
-
- netctrl.connected_n = connected;
- DPRINTK("> connected_n=%d interface_n=%d\n",
- netctrl.connected_n, netctrl.interface_n);
- return connected;
-}
-
-/** Send a packet on a net device to encourage switches to learn the
- * MAC. We send a fake ARP request.
- *
- * @param dev device
- * @return 0 on success, error code otherwise
- */
-static int send_fake_arp(struct net_device *dev)
-{
- struct sk_buff *skb;
- u32 src_ip, dst_ip;
-
- dst_ip = INADDR_BROADCAST;
- src_ip = inet_select_addr(dev, dst_ip, RT_SCOPE_LINK);
-
- /* No IP? Then nothing to do. */
- if (src_ip == 0)
- return 0;
-
- skb = arp_create(ARPOP_REPLY, ETH_P_ARP,
- dst_ip, dev, src_ip,
- /*dst_hw*/ NULL, /*src_hw*/ NULL,
- /*target_hw*/ dev->dev_addr);
- if (skb == NULL)
- return -ENOMEM;
-
- return dev_queue_xmit(skb);
-}
-
-static int network_open(struct net_device *dev)
-{
- struct net_private *np = netdev_priv(dev);
-
- memset(&np->stats, 0, sizeof(np->stats));
-
- np->user_state = UST_OPEN;
-
- network_alloc_rx_buffers(dev);
- np->rx->event = np->rx_resp_cons + 1;
-
- netif_start_queue(dev);
-
- return 0;
-}
-
-static void network_tx_buf_gc(struct net_device *dev)
-{
- NETIF_RING_IDX i, prod;
- unsigned short id;
- struct net_private *np = netdev_priv(dev);
- struct sk_buff *skb;
-
- if (np->backend_state != BEST_CONNECTED)
- return;
-
- do {
- prod = np->tx->resp_prod;
- rmb(); /* Ensure we see responses up to 'rp'. */
-
- for (i = np->tx_resp_cons; i != prod; i++) {
- id = np->tx->ring[MASK_NETIF_TX_IDX(i)].resp.id;
- skb = np->tx_skbs[id];
- ADD_ID_TO_FREELIST(np->tx_skbs, id);
- dev_kfree_skb_irq(skb);
- }
-
- np->tx_resp_cons = prod;
-
- /*
- * Set a new event, then check for race with update of tx_cons. Note
- * that it is essential to schedule a callback, no matter how few
- * buffers are pending. Even if there is space in the transmit ring,
- * higher layers may be blocked because too much data is outstanding:
- * in such cases notification from Xen is likely to be the only kick
- * that we'll get.
- */
- np->tx->event =
- prod + ((np->tx->req_prod - prod) >> 1) + 1;
- mb();
- } while (prod != np->tx->resp_prod);
-
- if (np->tx_full && ((np->tx->req_prod - prod) < NETIF_TX_RING_SIZE)) {
- np->tx_full = 0;
- if (np->user_state == UST_OPEN)
- netif_wake_queue(dev);
- }
-}
-
-
-static void network_alloc_rx_buffers(struct net_device *dev)
-{
- unsigned short id;
- struct net_private *np = netdev_priv(dev);
- struct sk_buff *skb;
- int i, batch_target;
- NETIF_RING_IDX req_prod = np->rx->req_prod;
-
- if (unlikely(np->backend_state != BEST_CONNECTED))
- return;
-
- /*
- * Allocate skbuffs greedily, even though we batch updates to the
- * receive ring. This creates a less bursty demand on the memory allocator,
- * so should reduce the chance of failed allocation requests both for
- * ourself and for other kernel subsystems.
- */
- batch_target = np->rx_target - (req_prod - np->rx_resp_cons);
- for (i = skb_queue_len(&np->rx_batch); i < batch_target; i++) {
- if (unlikely((skb = alloc_xen_skb(dev->mtu + RX_HEADROOM)) == NULL))
- break;
- __skb_queue_tail(&np->rx_batch, skb);
- }
-
- /* Is the batch large enough to be worthwhile? */
- if (i < (np->rx_target/2))
- return;
-
- for (i = 0; ; i++) {
- if ((skb = __skb_dequeue(&np->rx_batch)) == NULL)
- break;
-
- skb->dev = dev;
-
- id = GET_ID_FROM_FREELIST(np->rx_skbs);
-
- np->rx_skbs[id] = skb;
-
- np->rx->ring[MASK_NETIF_RX_IDX(req_prod + i)].req.id = id;
-
- rx_pfn_array[i] = virt_to_machine(skb->head) >> PAGE_SHIFT;
-
- /* Remove this page from pseudo phys map before passing back to Xen. */
- phys_to_machine_mapping[__pa(skb->head) >> PAGE_SHIFT]
- = INVALID_P2M_ENTRY;
-
- MULTI_update_va_mapping(rx_mcl+i, (unsigned long)skb->head,
- __pte(0), 0);
- }
-
- /* After all PTEs have been zapped we blow away stale TLB entries. */
- rx_mcl[i-1].args[2] = UVMF_TLB_FLUSH|UVMF_ALL;
-
- /* Give away a batch of pages. */
- rx_mcl[i].op = __HYPERVISOR_dom_mem_op;
- rx_mcl[i].args[0] = MEMOP_decrease_reservation;
- rx_mcl[i].args[1] = (unsigned long)rx_pfn_array;
- rx_mcl[i].args[2] = (unsigned long)i;
- rx_mcl[i].args[3] = 0;
- rx_mcl[i].args[4] = DOMID_SELF;
-
- /* Tell the ballon driver what is going on. */
- balloon_update_driver_allowance(i);
-
- /* Zap PTEs and give away pages in one big multicall. */
- (void)HYPERVISOR_multicall(rx_mcl, i+1);
-
- /* Check return status of HYPERVISOR_dom_mem_op(). */
- if (unlikely(rx_mcl[i].result != i))
- panic("Unable to reduce memory reservation\n");
-
- /* Above is a suitable barrier to ensure backend will see requests. */
- np->rx->req_prod = req_prod + i;
-
- /* Adjust our floating fill target if we risked running out of buffers. */
- if (((req_prod - np->rx->resp_prod) < (np->rx_target / 4)) &&
- ((np->rx_target *= 2) > np->rx_max_target))
- np->rx_target = np->rx_max_target;
-}
-
-
-static int network_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- unsigned short id;
- struct net_private *np = netdev_priv(dev);
- netif_tx_request_t *tx;
- NETIF_RING_IDX i;
-
- if (unlikely(np->tx_full)) {
- printk(KERN_ALERT "%s: full queue wasn't stopped!\n", dev->name);
- netif_stop_queue(dev);
- goto drop;
- }
-
- if (unlikely((((unsigned long)skb->data & ~PAGE_MASK) + skb->len) >=
- PAGE_SIZE)) {
- struct sk_buff *nskb;
- if (unlikely((nskb = alloc_xen_skb(skb->len)) == NULL))
- goto drop;
- skb_put(nskb, skb->len);
- memcpy(nskb->data, skb->data, skb->len);
- nskb->dev = skb->dev;
- dev_kfree_skb(skb);
- skb = nskb;
- }
-
- spin_lock_irq(&np->tx_lock);
-
- if (np->backend_state != BEST_CONNECTED) {
- spin_unlock_irq(&np->tx_lock);
- goto drop;
- }
-
- i = np->tx->req_prod;
-
- id = GET_ID_FROM_FREELIST(np->tx_skbs);
- np->tx_skbs[id] = skb;
-
- tx = &np->tx->ring[MASK_NETIF_TX_IDX(i)].req;
-
- tx->id = id;
- tx->addr = virt_to_machine(skb->data);
- tx->size = skb->len;
- tx->csum_blank = (skb->ip_summed == CHECKSUM_HW);
-
- wmb(); /* Ensure that backend will see the request. */
- np->tx->req_prod = i + 1;
-
- network_tx_buf_gc(dev);
-
- if ((i - np->tx_resp_cons) == (NETIF_TX_RING_SIZE - 1)) {
- np->tx_full = 1;
- netif_stop_queue(dev);
- }
-
- spin_unlock_irq(&np->tx_lock);
-
- np->stats.tx_bytes += skb->len;
- np->stats.tx_packets++;
-
- /* Only notify Xen if we really have to. */
- mb();
- if (np->tx->TX_TEST_IDX == i)
- notify_via_evtchn(np->evtchn);
-
- return 0;
-
- drop:
- np->stats.tx_dropped++;
- dev_kfree_skb(skb);
- return 0;
-}
-
-static irqreturn_t netif_int(int irq, void *dev_id, struct pt_regs *ptregs)
-{
- struct net_device *dev = dev_id;
- struct net_private *np = netdev_priv(dev);
- unsigned long flags;
-
- spin_lock_irqsave(&np->tx_lock, flags);
- network_tx_buf_gc(dev);
- spin_unlock_irqrestore(&np->tx_lock, flags);
-
- if ((np->rx_resp_cons != np->rx->resp_prod) && (np->user_state ==
UST_OPEN))
- netif_rx_schedule(dev);
-
- return IRQ_HANDLED;
-}
-
-
-static int netif_poll(struct net_device *dev, int *pbudget)
-{
- struct net_private *np = netdev_priv(dev);
- struct sk_buff *skb, *nskb;
- netif_rx_response_t *rx;
- NETIF_RING_IDX i, rp;
- mmu_update_t *mmu = rx_mmu;
- multicall_entry_t *mcl = rx_mcl;
- int work_done, budget, more_to_do = 1;
- struct sk_buff_head rxq;
- unsigned long flags;
-
- spin_lock(&np->rx_lock);
-
- if (np->backend_state != BEST_CONNECTED) {
- spin_unlock(&np->rx_lock);
- return 0;
- }
-
- skb_queue_head_init(&rxq);
-
- if ((budget = *pbudget) > dev->quota)
- budget = dev->quota;
-
- rp = np->rx->resp_prod;
- rmb(); /* Ensure we see queued responses up to 'rp'. */
-
- for (i = np->rx_resp_cons, work_done = 0;
- (i != rp) && (work_done < budget);
- i++, work_done++) {
- rx = &np->rx->ring[MASK_NETIF_RX_IDX(i)].resp;
-
- /*
- * An error here is very odd. Usually indicates a backend bug,
- * low-memory condition, or that we didn't have reservation headroom.
- */
- if (unlikely(rx->status <= 0)) {
- if (net_ratelimit())
- printk(KERN_WARNING "Bad rx buffer (memory squeeze?).\n");
- np->rx->ring[MASK_NETIF_RX_IDX(np->rx->req_prod)].req.id = rx->id;
- wmb();
- np->rx->req_prod++;
- work_done--;
- continue;
- }
-
- skb = np->rx_skbs[rx->id];
- ADD_ID_TO_FREELIST(np->rx_skbs, rx->id);
-
- /* NB. We handle skb overflow later. */
- skb->data = skb->head + (rx->addr & ~PAGE_MASK);
- skb->len = rx->status;
- skb->tail = skb->data + skb->len;
-
- if ( rx->csum_valid )
- skb->ip_summed = CHECKSUM_UNNECESSARY;
-
- np->stats.rx_packets++;
- np->stats.rx_bytes += rx->status;
-
- /* Remap the page. */
- mmu->ptr = (rx->addr & PAGE_MASK) | MMU_MACHPHYS_UPDATE;
- mmu->val = __pa(skb->head) >> PAGE_SHIFT;
- mmu++;
- MULTI_update_va_mapping(mcl, (unsigned long)skb->head,
- pfn_pte_ma(rx->addr >> PAGE_SHIFT,
PAGE_KERNEL), 0);
- mcl++;
-
- phys_to_machine_mapping[__pa(skb->head) >> PAGE_SHIFT] =
- rx->addr >> PAGE_SHIFT;
-
- __skb_queue_tail(&rxq, skb);
- }
-
- /* Some pages are no longer absent... */
- balloon_update_driver_allowance(-work_done);
-
- /* Do all the remapping work, and M->P updates, in one big hypercall. */
- if (likely((mcl - rx_mcl) != 0)) {
- mcl->op = __HYPERVISOR_mmu_update;
- mcl->args[0] = (unsigned long)rx_mmu;
- mcl->args[1] = mmu - rx_mmu;
- mcl->args[2] = 0;
- mcl->args[3] = DOMID_SELF;
- mcl++;
- (void)HYPERVISOR_multicall(rx_mcl, mcl - rx_mcl);
- }
-
- while ((skb = __skb_dequeue(&rxq)) != NULL) {
- /*
- * Enough room in skbuff for the data we were passed? Also, Linux
- * expects at least 16 bytes headroom in each receive buffer.
- */
- if (unlikely(skb->tail > skb->end) ||
- unlikely((skb->data - skb->head) < 16)) {
- nskb = NULL;
-
- /* Only copy the packet if it fits in the current MTU. */
- if (skb->len <= (dev->mtu + ETH_HLEN)) {
- if ((skb->tail > skb->end) && net_ratelimit())
- printk(KERN_INFO "Received packet needs %zd bytes more "
- "headroom.\n", skb->tail - skb->end);
-
- if ((nskb = alloc_xen_skb(skb->len + 2)) != NULL) {
- skb_reserve(nskb, 2);
- skb_put(nskb, skb->len);
- memcpy(nskb->data, skb->data, skb->len);
- nskb->dev = skb->dev;
- }
- }
- else if (net_ratelimit())
- printk(KERN_INFO "Received packet too big for MTU "
- "(%d > %d)\n", skb->len - ETH_HLEN, dev->mtu);
-
- /* Reinitialise and then destroy the old skbuff. */
- skb->len = 0;
- skb->tail = skb->data;
- init_skb_shinfo(skb);
- dev_kfree_skb(skb);
-
- /* Switch old for new, if we copied the buffer. */
- if ((skb = nskb) == NULL)
- continue;
- }
-
- /* Set the shared-info area, which is hidden behind the real data. */
- init_skb_shinfo(skb);
-
- /* Ethernet-specific work. Delayed to here as it peeks the header. */
- skb->protocol = eth_type_trans(skb, dev);
-
- /* Pass it up. */
- netif_receive_skb(skb);
- dev->last_rx = jiffies;
- }
-
- np->rx_resp_cons = i;
-
- /* If we get a callback with very few responses, reduce fill target. */
- /* NB. Note exponential increase, linear decrease. */
- if (((np->rx->req_prod - np->rx->resp_prod) > ((3*np->rx_target) / 4)) &&
- (--np->rx_target < np->rx_min_target))
- np->rx_target = np->rx_min_target;
-
- network_alloc_rx_buffers(dev);
-
- *pbudget -= work_done;
- dev->quota -= work_done;
-
- if (work_done < budget) {
- local_irq_save(flags);
-
- np->rx->event = i + 1;
-
- /* Deal with hypervisor racing our resetting of rx_event. */
- mb();
- if (np->rx->resp_prod == i) {
- __netif_rx_complete(dev);
- more_to_do = 0;
- }
-
- local_irq_restore(flags);
- }
-
- spin_unlock(&np->rx_lock);
-
- return more_to_do;
-}
-
-
-static int network_close(struct net_device *dev)
-{
- struct net_private *np = netdev_priv(dev);
- np->user_state = UST_CLOSED;
- netif_stop_queue(np->dev);
- return 0;
-}
-
-
-static struct net_device_stats *network_get_stats(struct net_device *dev)
-{
- struct net_private *np = netdev_priv(dev);
- return &np->stats;
-}
-
-
-static void network_connect(struct net_device *dev,
- netif_fe_interface_status_t *status)
-{
- struct net_private *np;
- int i, requeue_idx;
- netif_tx_request_t *tx;
-
- np = netdev_priv(dev);
- spin_lock_irq(&np->tx_lock);
- spin_lock(&np->rx_lock);
-
- /* Recovery procedure: */
-
- /* Step 1: Reinitialise variables. */
- np->rx_resp_cons = np->tx_resp_cons = np->tx_full = 0;
- np->rx->event = np->tx->event = 1;
-
- /* Step 2: Rebuild the RX and TX ring contents.
- * NB. We could just free the queued TX packets now but we hope
- * that sending them out might do some good. We have to rebuild
- * the RX ring because some of our pages are currently flipped out
- * so we can't just free the RX skbs.
- * NB2. Freelist index entries are always going to be less than
- * __PAGE_OFFSET, whereas pointers to skbs will always be equal or
- * greater than __PAGE_OFFSET: we use this property to distinguish
- * them.
- */
-
- /* Rebuild the TX buffer freelist and the TX ring itself.
- * NB. This reorders packets. We could keep more private state
- * to avoid this but maybe it doesn't matter so much given the
- * interface has been down.
- */
- for (requeue_idx = 0, i = 1; i <= NETIF_TX_RING_SIZE; i++) {
- if ((unsigned long)np->tx_skbs[i] >= __PAGE_OFFSET) {
- struct sk_buff *skb = np->tx_skbs[i];
-
- tx = &np->tx->ring[requeue_idx++].req;
-
- tx->id = i;
- tx->addr = virt_to_machine(skb->data);
- tx->size = skb->len;
-
- np->stats.tx_bytes += skb->len;
- np->stats.tx_packets++;
- }
- }
- wmb();
- np->tx->req_prod = requeue_idx;
-
- /* Rebuild the RX buffer freelist and the RX ring itself. */
- for (requeue_idx = 0, i = 1; i <= NETIF_RX_RING_SIZE; i++)
- if ((unsigned long)np->rx_skbs[i] >= __PAGE_OFFSET)
- np->rx->ring[requeue_idx++].req.id = i;
- wmb();
- np->rx->req_prod = requeue_idx;
-
- /* Step 3: All public and private state should now be sane. Get
- * ready to start sending and receiving packets and give the driver
- * domain a kick because we've probably just requeued some
- * packets.
- */
- np->backend_state = BEST_CONNECTED;
- wmb();
- notify_via_evtchn(status->evtchn);
- network_tx_buf_gc(dev);
-
- if (np->user_state == UST_OPEN)
- netif_start_queue(dev);
-
- spin_unlock(&np->rx_lock);
- spin_unlock_irq(&np->tx_lock);
-}
-
-static void vif_show(struct net_private *np)
-{
-#if DEBUG
- if (np) {
- IPRINTK("<vif handle=%u %s(%s) evtchn=%u irq=%u tx=%p rx=%p>\n",
- np->handle,
- be_state_name[np->backend_state],
- np->user_state ? "open" : "closed",
- np->evtchn,
- np->irq,
- np->tx,
- np->rx);
- } else {
- IPRINTK("<vif NULL>\n");
- }
-#endif
-}
-
-/* Send a connect message to xend to tell it to bring up the interface. */
-static void send_interface_connect(struct net_private *np)
-{
- ctrl_msg_t cmsg = {
- .type = CMSG_NETIF_FE,
- .subtype = CMSG_NETIF_FE_INTERFACE_CONNECT,
- .length = sizeof(netif_fe_interface_connect_t),
- };
- netif_fe_interface_connect_t *msg = (void*)cmsg.msg;
-
- msg->handle = np->handle;
- msg->tx_shmem_frame = (virt_to_machine(np->tx) >> PAGE_SHIFT);
- msg->rx_shmem_frame = (virt_to_machine(np->rx) >> PAGE_SHIFT);
-
- ctrl_if_send_message_block(&cmsg, NULL, 0, TASK_UNINTERRUPTIBLE);
-}
-
-/* Send a driver status notification to the domain controller. */
-static int send_driver_status(int ok)
-{
- int err = 0;
- ctrl_msg_t cmsg = {
- .type = CMSG_NETIF_FE,
- .subtype = CMSG_NETIF_FE_DRIVER_STATUS,
- .length = sizeof(netif_fe_driver_status_t),
- };
- netif_fe_driver_status_t *msg = (void*)cmsg.msg;
-
- msg->status = (ok ? NETIF_DRIVER_STATUS_UP : NETIF_DRIVER_STATUS_DOWN);
- err = ctrl_if_send_message_block(&cmsg, NULL, 0, TASK_UNINTERRUPTIBLE);
- return err;
-}
-
-/* Stop network device and free tx/rx queues and irq.
- */
-static void vif_release(struct net_private *np)
-{
- /* Stop old i/f to prevent errors whilst we rebuild the state. */
- spin_lock_irq(&np->tx_lock);
- spin_lock(&np->rx_lock);
- netif_stop_queue(np->dev);
- /* np->backend_state = BEST_DISCONNECTED; */
- spin_unlock(&np->rx_lock);
- spin_unlock_irq(&np->tx_lock);
-
- /* Free resources. */
- if(np->tx != NULL){
- free_irq(np->irq, np->dev);
- unbind_evtchn_from_irq(np->evtchn);
- free_page((unsigned long)np->tx);
- free_page((unsigned long)np->rx);
- np->irq = 0;
- np->evtchn = 0;
- np->tx = NULL;
- np->rx = NULL;
- }
-}
-
-/* Release vif resources and close it down completely.
- */
-static void vif_close(struct net_private *np)
-{
- WPRINTK("Unexpected netif-CLOSED message in state %s\n",
- be_state_name[np->backend_state]);
- vif_release(np);
- np->backend_state = BEST_CLOSED;
- /* todo: take dev down and free. */
- vif_show(np);
-}
-
-/* Move the vif into disconnected state.
- * Allocates tx/rx pages.
- * Sends connect message to xend.
- */
-static void vif_disconnect(struct net_private *np)
-{
- if(np->tx) free_page((unsigned long)np->tx);
- if(np->rx) free_page((unsigned long)np->rx);
- // Before this np->tx and np->rx had better be null.
- np->tx = (netif_tx_interface_t *)__get_free_page(GFP_KERNEL);
- np->rx = (netif_rx_interface_t *)__get_free_page(GFP_KERNEL);
- memset(np->tx, 0, PAGE_SIZE);
- memset(np->rx, 0, PAGE_SIZE);
- np->backend_state = BEST_DISCONNECTED;
- send_interface_connect(np);
- vif_show(np);
-}
-
-/* Begin interface recovery.
- *
- * NB. Whilst we're recovering, we turn the carrier state off. We
- * take measures to ensure that this device isn't used for
- * anything. We also stop the queue for this device. Various
- * different approaches (e.g. continuing to buffer packets) have
- * been tested but don't appear to improve the overall impact on
- * TCP connections.
- *
- * TODO: (MAW) Change the Xend<->Guest protocol so that a recovery
- * is initiated by a special "RESET" message - disconnect could
- * just mean we're not allowed to use this interface any more.
- */
-static void vif_reset(struct net_private *np)
-{
- IPRINTK("Attempting to reconnect network interface: handle=%u\n",
- np->handle);
- vif_release(np);
- vif_disconnect(np);
- vif_show(np);
-}
-
-/* Move the vif into connected state.
- * Sets the mac and event channel from the message.
- * Binds the irq to the event channel.
- */
-static void
-vif_connect(struct net_private *np, netif_fe_interface_status_t *status)
-{
- struct net_device *dev = np->dev;
- memcpy(dev->dev_addr, status->mac, ETH_ALEN);
- network_connect(dev, status);
- np->evtchn = status->evtchn;
- np->irq = bind_evtchn_to_irq(np->evtchn);
- (void)request_irq(np->irq, netif_int, SA_SAMPLE_RANDOM, dev->name, dev);
- netctrl_connected_count();
- (void)send_fake_arp(dev);
- vif_show(np);
-}
-
-static struct ethtool_ops network_ethtool_ops =
-{
- .get_tx_csum = ethtool_op_get_tx_csum,
- .set_tx_csum = ethtool_op_set_tx_csum,
-};
-
-/** Create a network device.
- * @param handle device handle
- * @param val return parameter for created device
- * @return 0 on success, error code otherwise
- */
-static int create_netdev(int handle, struct net_device **val)
-{
- int i, err = 0;
- struct net_device *dev = NULL;
- struct net_private *np = NULL;
-
- if ((dev = alloc_etherdev(sizeof(struct net_private))) == NULL) {
- printk(KERN_WARNING "%s> alloc_etherdev failed.\n", __FUNCTION__);
- err = -ENOMEM;
- goto exit;
- }
-
- np = netdev_priv(dev);
- np->backend_state = BEST_CLOSED;
- np->user_state = UST_CLOSED;
- np->handle = handle;
-
- spin_lock_init(&np->tx_lock);
- spin_lock_init(&np->rx_lock);
-
- skb_queue_head_init(&np->rx_batch);
- np->rx_target = RX_MIN_TARGET;
- np->rx_min_target = RX_MIN_TARGET;
- np->rx_max_target = RX_MAX_TARGET;
-
- /* Initialise {tx,rx}_skbs to be a free chain containing every entry. */
- for (i = 0; i <= NETIF_TX_RING_SIZE; i++)
- np->tx_skbs[i] = (void *)((unsigned long) i+1);
- for (i = 0; i <= NETIF_RX_RING_SIZE; i++)
- np->rx_skbs[i] = (void *)((unsigned long) i+1);
-
- dev->open = network_open;
- dev->hard_start_xmit = network_start_xmit;
- dev->stop = network_close;
- dev->get_stats = network_get_stats;
- dev->poll = netif_poll;
- dev->weight = 64;
- dev->features = NETIF_F_IP_CSUM;
-
- SET_ETHTOOL_OPS(dev, &network_ethtool_ops);
-
- if ((err = register_netdev(dev)) != 0) {
- printk(KERN_WARNING "%s> register_netdev err=%d\n", __FUNCTION__, err);
- goto exit;
- }
-
- if ((err = xennet_proc_addif(dev)) != 0) {
- unregister_netdev(dev);
- goto exit;
- }
-
- np->dev = dev;
- list_add(&np->list, &dev_list);
-
- exit:
- if ((err != 0) && (dev != NULL))
- kfree(dev);
- else if (val != NULL)
- *val = dev;
- return err;
-}
-
-/* Get the target interface for a status message.
- * Creates the interface when it makes sense.
- * The returned interface may be null when there is no error.
- *
- * @param status status message
- * @param np return parameter for interface state
- * @return 0 on success, error code otherwise
- */
-static int
-target_vif(netif_fe_interface_status_t *status, struct net_private **np)
-{
- int err = 0;
- struct net_device *dev;
-
- DPRINTK("> handle=%d\n", status->handle);
- if (status->handle < 0) {
- err = -EINVAL;
- goto exit;
- }
-
- if ((dev = find_dev_by_handle(status->handle)) != NULL)
- goto exit;
-
- if (status->status == NETIF_INTERFACE_STATUS_CLOSED)
- goto exit;
- if (status->status == NETIF_INTERFACE_STATUS_CHANGED)
- goto exit;
-
- /* It's a new interface in a good state - create it. */
- DPRINTK("> create device...\n");
- if ((err = create_netdev(status->handle, &dev)) != 0)
- goto exit;
-
- netctrl.interface_n++;
-
- exit:
- if (np != NULL)
- *np = ((dev && !err) ? netdev_priv(dev) : NULL);
- DPRINTK("< err=%d\n", err);
- return err;
-}
-
-/* Handle an interface status message. */
-static void netif_interface_status(netif_fe_interface_status_t *status)
-{
- int err = 0;
- struct net_private *np = NULL;
-
- DPRINTK("> status=%s handle=%d\n",
- status_name[status->status], status->handle);
-
- if ((err = target_vif(status, &np)) != 0) {
- WPRINTK("Invalid netif: handle=%u\n", status->handle);
- return;
- }
-
- if (np == NULL) {
- DPRINTK("> no vif\n");
- return;
- }
-
- switch (status->status) {
- case NETIF_INTERFACE_STATUS_CLOSED:
- switch (np->backend_state) {
- case BEST_CLOSED:
- case BEST_DISCONNECTED:
- case BEST_CONNECTED:
- vif_close(np);
- break;
- }
- break;
-
- case NETIF_INTERFACE_STATUS_DISCONNECTED:
- switch (np->backend_state) {
- case BEST_CLOSED:
- vif_disconnect(np);
- break;
- case BEST_DISCONNECTED:
- case BEST_CONNECTED:
- vif_reset(np);
- break;
- }
- break;
-
- case NETIF_INTERFACE_STATUS_CONNECTED:
- switch (np->backend_state) {
- case BEST_CLOSED:
- WPRINTK("Unexpected netif status %s in state %s\n",
- status_name[status->status],
- be_state_name[np->backend_state]);
- vif_disconnect(np);
- vif_connect(np, status);
- break;
- case BEST_DISCONNECTED:
- vif_connect(np, status);
- break;
- }
- break;
-
- case NETIF_INTERFACE_STATUS_CHANGED:
- /*
- * The domain controller is notifying us that a device has been
- * added or removed.
- */
- break;
-
- default:
- WPRINTK("Invalid netif status code %d\n", status->status);
- break;
- }
-
- vif_show(np);
-}
-
-/*
- * Initialize the network control interface.
- */
-static void netif_driver_status(netif_fe_driver_status_t *status)
-{
- netctrl.up = status->status;
- netctrl_connected_count();
-}
-
-/* Receive handler for control messages. */
-static void netif_ctrlif_rx(ctrl_msg_t *msg, unsigned long id)
-{
-
- switch (msg->subtype) {
- case CMSG_NETIF_FE_INTERFACE_STATUS:
- netif_interface_status((netif_fe_interface_status_t *) &msg->msg[0]);
- break;
-
- case CMSG_NETIF_FE_DRIVER_STATUS:
- netif_driver_status((netif_fe_driver_status_t *) &msg->msg[0]);
- break;
-
- default:
- msg->length = 0;
- break;
- }
-
- ctrl_if_send_response(msg);
-}
-
-
-#if 1
-/* Wait for all interfaces to be connected.
- *
- * This works OK, but we'd like to use the probing mode (see below).
- */
-static int probe_interfaces(void)
-{
- int err = 0, conn = 0;
- int wait_i, wait_n = 100;
-
- DPRINTK(">\n");
-
- for (wait_i = 0; wait_i < wait_n; wait_i++) {
- DPRINTK("> wait_i=%d\n", wait_i);
- conn = netctrl_connected();
- if(conn) break;
- DPRINTK("> schedule_timeout...\n");
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(10);
- }
-
- DPRINTK("> wait finished...\n");
- if (conn <= 0) {
- err = netctrl_err(-ENETDOWN);
- WPRINTK("Failed to connect all virtual interfaces: err=%d\n", err);
- }
-
- DPRINTK("< err=%d\n", err);
-
- return err;
-}
-#else
-/* Probe for interfaces until no more are found.
- *
- * This is the mode we'd like to use, but at the moment it panics the kernel.
-*/
-static int probe_interfaces(void)
-{
- int err = 0;
- int wait_i, wait_n = 100;
- ctrl_msg_t cmsg = {
- .type = CMSG_NETIF_FE,
- .subtype = CMSG_NETIF_FE_INTERFACE_STATUS,
- .length = sizeof(netif_fe_interface_status_t),
- };
- netif_fe_interface_status_t msg = {};
- ctrl_msg_t rmsg = {};
- netif_fe_interface_status_t *reply = (void*)rmsg.msg;
- int state = TASK_UNINTERRUPTIBLE;
- u32 query = -1;
-
- DPRINTK(">\n");
-
- netctrl.interface_n = 0;
- for (wait_i = 0; wait_i < wait_n; wait_i++) {
- DPRINTK("> wait_i=%d query=%d\n", wait_i, query);
- msg.handle = query;
- memcpy(cmsg.msg, &msg, sizeof(msg));
- DPRINTK("> set_current_state...\n");
- set_current_state(state);
- DPRINTK("> rmsg=%p msg=%p, reply=%p\n", &rmsg, rmsg.msg, reply);
- DPRINTK("> sending...\n");
- err = ctrl_if_send_message_and_get_response(&cmsg, &rmsg, state);
- DPRINTK("> err=%d\n", err);
- if(err) goto exit;
- DPRINTK("> rmsg=%p msg=%p, reply=%p\n", &rmsg, rmsg.msg, reply);
- if((int)reply->handle < 0) {
- // No more interfaces.
- break;
- }
- query = -reply->handle - 2;
- DPRINTK(">netif_interface_status ...\n");
- netif_interface_status(reply);
- }
-
- exit:
- if (err) {
- err = netctrl_err(-ENETDOWN);
- WPRINTK("Connecting virtual network interfaces failed: err=%d\n", err);
- }
-
- DPRINTK("< err=%d\n", err);
- return err;
-}
-
-#endif
-
-/*
- * We use this notifier to send out a fake ARP reply to reset switches and
- * router ARP caches when an IP interface is brought up on a VIF.
- */
-static int
-inetdev_notify(struct notifier_block *this, unsigned long event, void *ptr)
-{
- struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
- struct net_device *dev = ifa->ifa_dev->dev;
- struct list_head *ent;
- struct net_private *np;
-
- if (event != NETDEV_UP)
- goto out;
-
- list_for_each (ent, &dev_list) {
- np = list_entry(ent, struct net_private, list);
- if (np->dev == dev)
- (void)send_fake_arp(dev);
- }
-
- out:
- return NOTIFY_DONE;
-}
-
-static struct notifier_block notifier_inetdev = {
- .notifier_call = inetdev_notify,
- .next = NULL,
- .priority = 0
-};
-
-static int __init netif_init(void)
-{
- int err = 0;
-
- if (xen_start_info.flags & SIF_INITDOMAIN)
- return 0;
-
- if ((err = xennet_proc_init()) != 0)
- return err;
-
- IPRINTK("Initialising virtual ethernet driver.\n");
- INIT_LIST_HEAD(&dev_list);
- (void)register_inetaddr_notifier(¬ifier_inetdev);
- netctrl_init();
- (void)ctrl_if_register_receiver(CMSG_NETIF_FE, netif_ctrlif_rx,
- CALLBACK_IN_BLOCKING_CONTEXT);
- send_driver_status(1);
- err = probe_interfaces();
- if (err)
- ctrl_if_unregister_receiver(CMSG_NETIF_FE, netif_ctrlif_rx);
-
- DPRINTK("< err=%d\n", err);
- return err;
-}
-
-static void vif_suspend(struct net_private *np)
-{
- /* Avoid having tx/rx stuff happen until we're ready. */
- free_irq(np->irq, np->dev);
- unbind_evtchn_from_irq(np->evtchn);
-}
-
-static void vif_resume(struct net_private *np)
-{
- /*
- * Connect regardless of whether IFF_UP flag set.
- * Stop bad things from happening until we're back up.
- */
- np->backend_state = BEST_DISCONNECTED;
- memset(np->tx, 0, PAGE_SIZE);
- memset(np->rx, 0, PAGE_SIZE);
-
- send_interface_connect(np);
-}
-
-void netif_suspend(void)
-{
- struct list_head *ent;
- struct net_private *np;
-
- list_for_each (ent, &dev_list) {
- np = list_entry(ent, struct net_private, list);
- vif_suspend(np);
- }
-}
-
-void netif_resume(void)
-{
- struct list_head *ent;
- struct net_private *np;
-
- list_for_each (ent, &dev_list) {
- np = list_entry(ent, struct net_private, list);
- vif_resume(np);
- }
-}
-
-#ifdef CONFIG_PROC_FS
-
-#define TARGET_MIN 0UL
-#define TARGET_MAX 1UL
-#define TARGET_CUR 2UL
-
-static int xennet_proc_read(
- char *page, char **start, off_t off, int count, int *eof, void *data)
-{
- struct net_device *dev = (struct net_device *)((unsigned long)data & ~3UL);
- struct net_private *np = netdev_priv(dev);
- int len = 0, which_target = (long)data & 3;
-
- switch (which_target)
- {
- case TARGET_MIN:
- len = sprintf(page, "%d\n", np->rx_min_target);
- break;
- case TARGET_MAX:
- len = sprintf(page, "%d\n", np->rx_max_target);
- break;
- case TARGET_CUR:
- len = sprintf(page, "%d\n", np->rx_target);
- break;
- }
-
- *eof = 1;
- return len;
-}
-
-static int xennet_proc_write(
- struct file *file, const char __user *buffer,
- unsigned long count, void *data)
-{
- struct net_device *dev = (struct net_device *)((unsigned long)data & ~3UL);
- struct net_private *np = netdev_priv(dev);
- int which_target = (long)data & 3;
- char string[64];
- long target;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- if (count <= 1)
- return -EBADMSG; /* runt */
- if (count > sizeof(string))
- return -EFBIG; /* too long */
-
- if (copy_from_user(string, buffer, count))
- return -EFAULT;
- string[sizeof(string)-1] = '\0';
-
- target = simple_strtol(string, NULL, 10);
- if (target < RX_MIN_TARGET)
- target = RX_MIN_TARGET;
- if (target > RX_MAX_TARGET)
- target = RX_MAX_TARGET;
-
- spin_lock(&np->rx_lock);
-
- switch (which_target)
- {
- case TARGET_MIN:
- if (target > np->rx_max_target)
- np->rx_max_target = target;
- np->rx_min_target = target;
- if (target > np->rx_target)
- np->rx_target = target;
- break;
- case TARGET_MAX:
- if (target < np->rx_min_target)
- np->rx_min_target = target;
- np->rx_max_target = target;
- if (target < np->rx_target)
- np->rx_target = target;
- break;
- case TARGET_CUR:
- break;
- }
-
- network_alloc_rx_buffers(dev);
-
- spin_unlock(&np->rx_lock);
-
- return count;
-}
-
-static int xennet_proc_init(void)
-{
- if (proc_mkdir("xen/net", NULL) == NULL)
- return -ENOMEM;
- return 0;
-}
-
-static int xennet_proc_addif(struct net_device *dev)
-{
- struct proc_dir_entry *dir, *min, *max, *cur;
- char name[30];
-
- sprintf(name, "xen/net/%s", dev->name);
-
- dir = proc_mkdir(name, NULL);
- if (!dir)
- goto nomem;
-
- min = create_proc_entry("rxbuf_min", 0644, dir);
- max = create_proc_entry("rxbuf_max", 0644, dir);
- cur = create_proc_entry("rxbuf_cur", 0444, dir);
- if (!min || !max || !cur)
- goto nomem;
-
- min->read_proc = xennet_proc_read;
- min->write_proc = xennet_proc_write;
- min->data = (void *)((unsigned long)dev | TARGET_MIN);
-
- max->read_proc = xennet_proc_read;
- max->write_proc = xennet_proc_write;
- max->data = (void *)((unsigned long)dev | TARGET_MAX);
-
- cur->read_proc = xennet_proc_read;
- cur->write_proc = xennet_proc_write;
- cur->data = (void *)((unsigned long)dev | TARGET_CUR);
-
- return 0;
-
- nomem:
- xennet_proc_delif(dev);
- return -ENOMEM;
-}
-
-static void xennet_proc_delif(struct net_device *dev)
-{
- char name[30];
-
- sprintf(name, "xen/net/%s/rxbuf_min", dev->name);
- remove_proc_entry(name, NULL);
-
- sprintf(name, "xen/net/%s/rxbuf_max", dev->name);
- remove_proc_entry(name, NULL);
-
- sprintf(name, "xen/net/%s/rxbuf_cur", dev->name);
- remove_proc_entry(name, NULL);
-
- sprintf(name, "xen/net/%s", dev->name);
- remove_proc_entry(name, NULL);
-}
-
-#endif
-
-module_init(netif_init);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/privcmd/Makefile
--- a/linux-2.6.11-xen-sparse/drivers/xen/privcmd/Makefile Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,2 +0,0 @@
-
-obj-y := privcmd.o
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/privcmd/privcmd.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/privcmd/privcmd.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,259 +0,0 @@
-/******************************************************************************
- * privcmd.c
- *
- * Interface to privileged domain-0 commands.
- *
- * Copyright (c) 2002-2004, K A Fraser, B Dragovic
- */
-
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/mm.h>
-#include <linux/mman.h>
-#include <linux/swap.h>
-#include <linux/smp_lock.h>
-#include <linux/highmem.h>
-#include <linux/pagemap.h>
-#include <linux/seq_file.h>
-
-#include <asm/pgalloc.h>
-#include <asm/pgtable.h>
-#include <asm/uaccess.h>
-#include <asm/tlb.h>
-#include <asm-xen/linux-public/privcmd.h>
-#include <asm-xen/xen-public/dom0_ops.h>
-#include <asm-xen/xen_proc.h>
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
-#define pud_t pgd_t
-#define pud_offset(d, va) d
-#endif
-
-static struct proc_dir_entry *privcmd_intf;
-
-static int privcmd_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long data)
-{
- int ret = -ENOSYS;
-
- switch ( cmd )
- {
- case IOCTL_PRIVCMD_HYPERCALL:
- {
- privcmd_hypercall_t hypercall;
-
- if ( copy_from_user(&hypercall, (void *)data, sizeof(hypercall)) )
- return -EFAULT;
-
-#if defined(__i386__)
- __asm__ __volatile__ (
- "pushl %%ebx; pushl %%ecx; pushl %%edx; pushl %%esi; pushl %%edi; "
- "movl 4(%%eax),%%ebx ;"
- "movl 8(%%eax),%%ecx ;"
- "movl 12(%%eax),%%edx ;"
- "movl 16(%%eax),%%esi ;"
- "movl 20(%%eax),%%edi ;"
- "movl (%%eax),%%eax ;"
- TRAP_INSTR "; "
- "popl %%edi; popl %%esi; popl %%edx; popl %%ecx; popl %%ebx"
- : "=a" (ret) : "0" (&hypercall) : "memory" );
-#elif defined (__x86_64__)
- __asm__ __volatile__ (
- "movq %5,%%r10; movq %6,%%r8;" TRAP_INSTR
- : "=a" (ret)
- : "a" ((unsigned long)hypercall.op),
- "D" ((unsigned long)hypercall.arg[0]),
- "S" ((unsigned long)hypercall.arg[1]),
- "d" ((unsigned long)hypercall.arg[2]),
- "g" ((unsigned long)hypercall.arg[3]),
- "g" ((unsigned long)hypercall.arg[4])
- : "r11","rcx","r8","r10","memory");
-#endif
- }
- break;
-
- case IOCTL_PRIVCMD_INITDOMAIN_EVTCHN:
- {
- extern int initdom_ctrlif_domcontroller_port;
- ret = initdom_ctrlif_domcontroller_port;
- }
- break;
-
-#if defined(CONFIG_XEN_PRIVILEGED_GUEST)
- case IOCTL_PRIVCMD_MMAP:
- {
-#define PRIVCMD_MMAP_SZ 32
- privcmd_mmap_t mmapcmd;
- privcmd_mmap_entry_t msg[PRIVCMD_MMAP_SZ], *p;
- int i, rc;
-
- if ( copy_from_user(&mmapcmd, (void *)data, sizeof(mmapcmd)) )
- return -EFAULT;
-
- p = mmapcmd.entry;
-
- for (i=0; i<mmapcmd.num; i+=PRIVCMD_MMAP_SZ, p+=PRIVCMD_MMAP_SZ)
- {
- int j, n = ((mmapcmd.num-i)>PRIVCMD_MMAP_SZ)?
- PRIVCMD_MMAP_SZ:(mmapcmd.num-i);
-
-
- if ( copy_from_user(&msg, p, n*sizeof(privcmd_mmap_entry_t)) )
- return -EFAULT;
-
- for ( j = 0; j < n; j++ )
- {
- struct vm_area_struct *vma =
- find_vma( current->mm, msg[j].va );
-
- if ( !vma )
- return -EINVAL;
-
- if ( msg[j].va > PAGE_OFFSET )
- return -EINVAL;
-
- if ( (msg[j].va + (msg[j].npages<<PAGE_SHIFT)) > vma->vm_end )
- return -EINVAL;
-
- if ( (rc = direct_remap_area_pages(vma->vm_mm,
- msg[j].va&PAGE_MASK,
- msg[j].mfn<<PAGE_SHIFT,
- msg[j].npages<<PAGE_SHIFT,
- vma->vm_page_prot,
- mmapcmd.dom)) < 0 )
- return rc;
- }
- }
- ret = 0;
- }
- break;
-
- case IOCTL_PRIVCMD_MMAPBATCH:
- {
- mmu_update_t u;
- privcmd_mmapbatch_t m;
- struct vm_area_struct *vma = NULL;
- unsigned long *p, addr;
- unsigned long mfn;
- int i;
-
- if ( copy_from_user(&m, (void *)data, sizeof(m)) )
- { ret = -EFAULT; goto batch_err; }
-
- vma = find_vma( current->mm, m.addr );
-
- if ( !vma )
- { ret = -EINVAL; goto batch_err; }
-
- if ( m.addr > PAGE_OFFSET )
- { ret = -EFAULT; goto batch_err; }
-
- if ( (m.addr + (m.num<<PAGE_SHIFT)) > vma->vm_end )
- { ret = -EFAULT; goto batch_err; }
-
- p = m.arr;
- addr = m.addr;
- for ( i = 0; i < m.num; i++, addr += PAGE_SIZE, p++ )
- {
- if ( get_user(mfn, p) )
- return -EFAULT;
-
- u.val = (mfn << PAGE_SHIFT) | pgprot_val(vma->vm_page_prot);
-
- __direct_remap_area_pages(vma->vm_mm,
- addr,
- PAGE_SIZE,
- &u);
-
- if ( unlikely(HYPERVISOR_mmu_update(&u, 1, NULL, m.dom) < 0) )
- put_user(0xF0000000 | mfn, p);
- }
-
- ret = 0;
- break;
-
- batch_err:
- printk("batch_err ret=%d vma=%p addr=%lx num=%d arr=%p %lx-%lx\n",
- ret, vma, m.addr, m.num, m.arr,
- vma ? vma->vm_start : 0, vma ? vma->vm_end : 0);
- break;
- }
- break;
-#endif
-
- case IOCTL_PRIVCMD_GET_MACH2PHYS_START_MFN:
- {
- unsigned long m2pv = (unsigned long)machine_to_phys_mapping;
- pgd_t *pgd = pgd_offset_k(m2pv);
- pud_t *pud = pud_offset(pgd, m2pv);
- pmd_t *pmd = pmd_offset(pud, m2pv);
- unsigned long m2p_start_mfn = (*(unsigned long *)pmd) >> PAGE_SHIFT;
- ret = put_user(m2p_start_mfn, (unsigned long *)data) ? -EFAULT: 0;
- }
- break;
-
- case IOCTL_PRIVCMD_INITDOMAIN_STORE:
- {
- extern int do_xenbus_probe(void*);
-
- if (xen_start_info.store_evtchn != 0) {
- ret = -EINVAL;
- break;
- }
-
- /* Allocate page. */
- xen_start_info.store_page = get_zeroed_page(GFP_KERNEL);
- if (!xen_start_info.store_page) {
- ret = -ENOMEM;
- break;
- }
-
- /* We don't refcnt properly, so set reserved on page.
- * (this allocation is permanent) */
- SetPageReserved(virt_to_page(xen_start_info.store_page));
-
- /* Initial connect. Setup channel and page. */
- xen_start_info.store_evtchn = data;
- ret = pfn_to_mfn(virt_to_phys((void *)xen_start_info.store_page) >>
- PAGE_SHIFT);
-
- /* We'll return then this will wait for daemon to answer */
- // kthread_run(do_xenbus_probe, NULL, "xenbus_probe");
- }
- break;
-
- default:
- ret = -EINVAL;
- break;
- }
- return ret;
-}
-
-static int privcmd_mmap(struct file * file, struct vm_area_struct * vma)
-{
- /* DONTCOPY is essential for Xen as copy_page_range is broken. */
- vma->vm_flags |= VM_RESERVED | VM_IO | VM_DONTCOPY;
-
- return 0;
-}
-
-static struct file_operations privcmd_file_ops = {
- ioctl : privcmd_ioctl,
- mmap: privcmd_mmap
-};
-
-
-static int __init privcmd_init(void)
-{
- privcmd_intf = create_xen_proc_entry("privcmd", 0400);
- if ( privcmd_intf != NULL )
- privcmd_intf->proc_fops = &privcmd_file_ops;
-
- return 0;
-}
-
-__initcall(privcmd_init);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/usbback/common.h
--- a/linux-2.6.11-xen-sparse/drivers/xen/usbback/common.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,85 +0,0 @@
-
-#ifndef __USBIF__BACKEND__COMMON_H__
-#define __USBIF__BACKEND__COMMON_H__
-
-#include <linux/config.h>
-#include <linux/version.h>
-#include <linux/module.h>
-#include <linux/rbtree.h>
-#include <linux/interrupt.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <asm/io.h>
-#include <asm/setup.h>
-#include <asm/pgalloc.h>
-#include <asm-xen/ctrl_if.h>
-#include <asm-xen/hypervisor.h>
-
-#include <asm-xen/xen-public/io/usbif.h>
-
-#if 0
-#define ASSERT(_p) \
- if ( !(_p) ) { printk("Assertion '%s' failed, line %d, file %s", #_p , \
- __LINE__, __FILE__); *(int*)0=0; }
-#define DPRINTK(_f, _a...) printk(KERN_ALERT "(file=%s, line=%d) " _f, \
- __FILE__ , __LINE__ , ## _a )
-#else
-#define ASSERT(_p) ((void)0)
-#define DPRINTK(_f, _a...) ((void)0)
-#endif
-
-typedef struct usbif_priv_st usbif_priv_t;
-
-struct usbif_priv_st {
- /* Unique identifier for this interface. */
- domid_t domid;
- unsigned int handle;
- /* Physical parameters of the comms window. */
- unsigned long shmem_frame;
- unsigned int evtchn;
- int irq;
- /* Comms Information */
- usbif_back_ring_t usb_ring;
- /* Private fields. */
- enum { DISCONNECTED, DISCONNECTING, CONNECTED } status;
- /*
- * DISCONNECT response is deferred until pending requests are ack'ed.
- * We therefore need to store the id from the original request.
- */
- u8 disconnect_rspid;
- usbif_priv_t *hash_next;
- struct list_head usbif_list;
- spinlock_t usb_ring_lock;
- atomic_t refcnt;
-
- struct work_struct work;
-};
-
-void usbif_create(usbif_be_create_t *create);
-void usbif_destroy(usbif_be_destroy_t *destroy);
-void usbif_connect(usbif_be_connect_t *connect);
-int usbif_disconnect(usbif_be_disconnect_t *disconnect, u8 rsp_id);
-void usbif_disconnect_complete(usbif_priv_t *up);
-
-void usbif_release_port(usbif_be_release_port_t *msg);
-int usbif_claim_port(usbif_be_claim_port_t *msg);
-void usbif_release_ports(usbif_priv_t *up);
-
-usbif_priv_t *usbif_find(domid_t domid);
-#define usbif_get(_b) (atomic_inc(&(_b)->refcnt))
-#define usbif_put(_b) \
- do { \
- if ( atomic_dec_and_test(&(_b)->refcnt) ) \
- usbif_disconnect_complete(_b); \
- } while (0)
-
-
-void usbif_interface_init(void);
-void usbif_ctrlif_init(void);
-
-void usbif_deschedule(usbif_priv_t *up);
-void remove_from_usbif_list(usbif_priv_t *up);
-
-irqreturn_t usbif_be_int(int irq, void *dev_id, struct pt_regs *regs);
-
-#endif /* __USBIF__BACKEND__COMMON_H__ */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/usbback/control.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/usbback/control.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,61 +0,0 @@
-/******************************************************************************
- * arch/xen/drivers/usbif/backend/control.c
- *
- * Routines for interfacing with the control plane.
- *
- * Copyright (c) 2004, Keir Fraser
- */
-
-#include "common.h"
-
-static void usbif_ctrlif_rx(ctrl_msg_t *msg, unsigned long id)
-{
- DPRINTK("Received usbif backend message, subtype=%d\n", msg->subtype);
-
- switch ( msg->subtype )
- {
- case CMSG_USBIF_BE_CREATE:
- usbif_create((usbif_be_create_t *)&msg->msg[0]);
- break;
- case CMSG_USBIF_BE_DESTROY:
- usbif_destroy((usbif_be_destroy_t *)&msg->msg[0]);
- break;
- case CMSG_USBIF_BE_CONNECT:
- usbif_connect((usbif_be_connect_t *)&msg->msg[0]);
- break;
- case CMSG_USBIF_BE_DISCONNECT:
- if ( !usbif_disconnect((usbif_be_disconnect_t *)&msg->msg[0],msg->id) )
- return; /* Sending the response is deferred until later. */
- break;
- case CMSG_USBIF_BE_CLAIM_PORT:
- usbif_claim_port((usbif_be_claim_port_t *)&msg->msg[0]);
- break;
- case CMSG_USBIF_BE_RELEASE_PORT:
- usbif_release_port((usbif_be_release_port_t *)&msg->msg[0]);
- break;
- default:
- DPRINTK("Parse error while reading message subtype %d, len %d\n",
- msg->subtype, msg->length);
- msg->length = 0;
- break;
- }
-
- ctrl_if_send_response(msg);
-}
-
-void usbif_ctrlif_init(void)
-{
- ctrl_msg_t cmsg;
- usbif_be_driver_status_changed_t st;
-
- (void)ctrl_if_register_receiver(CMSG_USBIF_BE, usbif_ctrlif_rx,
- CALLBACK_IN_BLOCKING_CONTEXT);
-
- /* Send a driver-UP notification to the domain controller. */
- cmsg.type = CMSG_USBIF_BE;
- cmsg.subtype = CMSG_USBIF_BE_DRIVER_STATUS_CHANGED;
- cmsg.length = sizeof(usbif_be_driver_status_changed_t);
- st.status = USBIF_DRIVER_STATUS_UP;
- memcpy(cmsg.msg, &st, sizeof(st));
- ctrl_if_send_message_block(&cmsg, NULL, 0, TASK_UNINTERRUPTIBLE);
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/usbback/interface.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/usbback/interface.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,252 +0,0 @@
-/******************************************************************************
- * arch/xen/drivers/usbif/backend/interface.c
- *
- * USB device interface management.
- *
- * by Mark Williamson, Copyright (c) 2004
- */
-
-
-/******************************************************************************
- * arch/xen/drivers/blkif/backend/interface.c
- *
- * Block-device interface management.
- *
- * Copyright (c) 2004, Keir Fraser
- */
-
-#include "common.h"
-
-#define USBIF_HASHSZ 1024
-#define USBIF_HASH(_d) (((int)(_d))&(USBIF_HASHSZ-1))
-
-static kmem_cache_t *usbif_priv_cachep;
-static usbif_priv_t *usbif_priv_hash[USBIF_HASHSZ];
-
-usbif_priv_t *usbif_find(domid_t domid)
-{
- usbif_priv_t *up = usbif_priv_hash[USBIF_HASH(domid)];
- while ( (up != NULL ) && ( up->domid != domid ) )
- up = up->hash_next;
- return up;
-}
-
-static void __usbif_disconnect_complete(void *arg)
-{
- usbif_priv_t *usbif = (usbif_priv_t *)arg;
- ctrl_msg_t cmsg;
- usbif_be_disconnect_t disc;
-
- /*
- * These can't be done in usbif_disconnect() because at that point there
- * may be outstanding requests at the device whose asynchronous responses
- * must still be notified to the remote driver.
- */
- unbind_evtchn_from_irq(usbif->evtchn);
- vfree(usbif->usb_ring.sring);
-
- /* Construct the deferred response message. */
- cmsg.type = CMSG_USBIF_BE;
- cmsg.subtype = CMSG_USBIF_BE_DISCONNECT;
- cmsg.id = usbif->disconnect_rspid;
- cmsg.length = sizeof(usbif_be_disconnect_t);
- disc.domid = usbif->domid;
- disc.status = USBIF_BE_STATUS_OKAY;
- memcpy(cmsg.msg, &disc, sizeof(disc));
-
- /*
- * Make sure message is constructed /before/ status change, because
- * after the status change the 'usbif' structure could be deallocated at
- * any time. Also make sure we send the response /after/ status change,
- * as otherwise a subsequent CONNECT request could spuriously fail if
- * another CPU doesn't see the status change yet.
- */
- mb();
- if ( usbif->status != DISCONNECTING )
- BUG();
- usbif->status = DISCONNECTED;
- mb();
-
- /* Send the successful response. */
- ctrl_if_send_response(&cmsg);
-}
-
-void usbif_disconnect_complete(usbif_priv_t *up)
-{
- INIT_WORK(&up->work, __usbif_disconnect_complete, (void *)up);
- schedule_work(&up->work);
-}
-
-void usbif_create(usbif_be_create_t *create)
-{
- domid_t domid = create->domid;
- usbif_priv_t **pup, *up;
-
- if ( (up = kmem_cache_alloc(usbif_priv_cachep, GFP_KERNEL)) == NULL )
- {
- DPRINTK("Could not create usbif: out of memory\n");
- create->status = USBIF_BE_STATUS_OUT_OF_MEMORY;
- return;
- }
-
- memset(up, 0, sizeof(*up));
- up->domid = domid;
- up->status = DISCONNECTED;
- spin_lock_init(&up->usb_ring_lock);
- atomic_set(&up->refcnt, 0);
-
- pup = &usbif_priv_hash[USBIF_HASH(domid)];
- while ( *pup != NULL )
- {
- if ( (*pup)->domid == domid )
- {
- create->status = USBIF_BE_STATUS_INTERFACE_EXISTS;
- kmem_cache_free(usbif_priv_cachep, up);
- return;
- }
- pup = &(*pup)->hash_next;
- }
-
- up->hash_next = *pup;
- *pup = up;
-
- create->status = USBIF_BE_STATUS_OKAY;
-}
-
-void usbif_destroy(usbif_be_destroy_t *destroy)
-{
- domid_t domid = destroy->domid;
- usbif_priv_t **pup, *up;
-
- pup = &usbif_priv_hash[USBIF_HASH(domid)];
- while ( (up = *pup) != NULL )
- {
- if ( up->domid == domid )
- {
- if ( up->status != DISCONNECTED )
- goto still_connected;
- goto destroy;
- }
- pup = &up->hash_next;
- }
-
- destroy->status = USBIF_BE_STATUS_INTERFACE_NOT_FOUND;
- return;
-
- still_connected:
- destroy->status = USBIF_BE_STATUS_INTERFACE_CONNECTED;
- return;
-
- destroy:
- *pup = up->hash_next;
- usbif_release_ports(up);
- kmem_cache_free(usbif_priv_cachep, up);
- destroy->status = USBIF_BE_STATUS_OKAY;
-}
-
-void usbif_connect(usbif_be_connect_t *connect)
-{
- domid_t domid = connect->domid;
- unsigned int evtchn = connect->evtchn;
- unsigned long shmem_frame = connect->shmem_frame;
- struct vm_struct *vma;
- pgprot_t prot;
- int error;
- usbif_priv_t *up;
- usbif_sring_t *sring;
-
- up = usbif_find(domid);
- if ( unlikely(up == NULL) )
- {
- DPRINTK("usbif_connect attempted for non-existent usbif (%u)\n",
- connect->domid);
- connect->status = USBIF_BE_STATUS_INTERFACE_NOT_FOUND;
- return;
- }
-
- if ( (vma = get_vm_area(PAGE_SIZE, VM_IOREMAP)) == NULL )
- {
- connect->status = USBIF_BE_STATUS_OUT_OF_MEMORY;
- return;
- }
-
- prot = __pgprot(_KERNPG_TABLE);
- error = direct_remap_area_pages(&init_mm, VMALLOC_VMADDR(vma->addr),
- shmem_frame<<PAGE_SHIFT, PAGE_SIZE,
- prot, domid);
- if ( error != 0 )
- {
- if ( error == -ENOMEM )
- connect->status = USBIF_BE_STATUS_OUT_OF_MEMORY;
- else if ( error == -EFAULT )
- connect->status = USBIF_BE_STATUS_MAPPING_ERROR;
- else
- connect->status = USBIF_BE_STATUS_ERROR;
- vfree(vma->addr);
- return;
- }
-
- if ( up->status != DISCONNECTED )
- {
- connect->status = USBIF_BE_STATUS_INTERFACE_CONNECTED;
- vfree(vma->addr);
- return;
- }
-
- sring = (usbif_sring_t *)vma->addr;
- SHARED_RING_INIT(sring);
- BACK_RING_INIT(&up->usb_ring, sring, PAGE_SIZE);
-
- up->evtchn = evtchn;
- up->irq = bind_evtchn_to_irq(evtchn);
- up->shmem_frame = shmem_frame;
- up->status = CONNECTED;
- usbif_get(up);
-
- request_irq(up->irq, usbif_be_int, 0, "usbif-backend", up);
-
- connect->status = USBIF_BE_STATUS_OKAY;
-}
-
-/* Remove URBs for this interface before destroying it. */
-void usbif_deschedule(usbif_priv_t *up)
-{
- remove_from_usbif_list(up);
-}
-
-int usbif_disconnect(usbif_be_disconnect_t *disconnect, u8 rsp_id)
-{
- domid_t domid = disconnect->domid;
- usbif_priv_t *up;
-
- up = usbif_find(domid);
- if ( unlikely(up == NULL) )
- {
- DPRINTK("usbif_disconnect attempted for non-existent usbif"
- " (%u)\n", disconnect->domid);
- disconnect->status = USBIF_BE_STATUS_INTERFACE_NOT_FOUND;
- return 1; /* Caller will send response error message. */
- }
-
- if ( up->status == CONNECTED )
- {
- up->status = DISCONNECTING;
- up->disconnect_rspid = rsp_id;
- wmb(); /* Let other CPUs see the status change. */
- free_irq(up->irq, up);
- usbif_deschedule(up);
- usbif_put(up);
- return 0; /* Caller should not send response message. */
- }
-
- disconnect->status = USBIF_BE_STATUS_OKAY;
- return 1;
-}
-
-void __init usbif_interface_init(void)
-{
- usbif_priv_cachep = kmem_cache_create("usbif_priv_cache",
- sizeof(usbif_priv_t),
- 0, 0, NULL, NULL);
- memset(usbif_priv_hash, 0, sizeof(usbif_priv_hash));
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/usbback/usbback.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/usbback/usbback.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,1066 +0,0 @@
-/******************************************************************************
- * arch/xen/drivers/usbif/backend/main.c
- *
- * Backend for the Xen virtual USB driver - provides an abstraction of a
- * USB host controller to the corresponding frontend driver.
- *
- * by Mark Williamson
- * Copyright (c) 2004 Intel Research Cambridge
- * Copyright (c) 2004, 2005 Mark Williamson
- *
- * Based on arch/xen/drivers/blkif/backend/main.c
- * Copyright (c) 2003-2004, Keir Fraser & Steve Hand
- */
-
-#include "common.h"
-
-
-#include <linux/list.h>
-#include <linux/usb.h>
-#include <linux/spinlock.h>
-#include <linux/module.h>
-#include <linux/tqueue.h>
-
-/*
- * This is rather arbitrary.
- */
-#define MAX_PENDING_REQS 4
-#define BATCH_PER_DOMAIN 1
-
-static unsigned long mmap_vstart;
-
-/* Needs to be sufficiently large that we can map the (large) buffers
- * the USB mass storage driver wants. */
-#define MMAP_PAGES_PER_REQUEST \
- (128)
-#define MMAP_PAGES \
- (MAX_PENDING_REQS * MMAP_PAGES_PER_REQUEST)
-
-#define MMAP_VADDR(_req,_seg) \
- (mmap_vstart + \
- ((_req) * MMAP_PAGES_PER_REQUEST * PAGE_SIZE) + \
- ((_seg) * PAGE_SIZE))
-
-
-static spinlock_t owned_ports_lock;
-LIST_HEAD(owned_ports);
-
-/* A list of these structures is used to track ownership of physical USB
- * ports. */
-typedef struct
-{
- usbif_priv_t *usbif_priv;
- char path[16];
- int guest_port;
- int enabled;
- struct list_head list;
- unsigned long guest_address; /* The USB device address that has been
- * assigned by the guest. */
- int dev_present; /* Is there a device present? */
- struct usb_device * dev;
- unsigned long ifaces; /* What interfaces are present on this device? */
-} owned_port_t;
-
-
-/*
- * Each outstanding request that we've passed to the lower device layers has a
- * 'pending_req' allocated to it. The request is complete, the specified
- * domain has a response queued for it, with the saved 'id' passed back.
- */
-typedef struct {
- usbif_priv_t *usbif_priv;
- unsigned long id;
- int nr_pages;
- unsigned short operation;
- int status;
-} pending_req_t;
-
-/*
- * We can't allocate pending_req's in order, since they may complete out of
- * order. We therefore maintain an allocation ring. This ring also indicates
- * when enough work has been passed down -- at that point the allocation ring
- * will be empty.
- */
-static pending_req_t pending_reqs[MAX_PENDING_REQS];
-static unsigned char pending_ring[MAX_PENDING_REQS];
-static spinlock_t pend_prod_lock;
-
-/* NB. We use a different index type to differentiate from shared usb rings. */
-typedef unsigned int PEND_RING_IDX;
-#define MASK_PEND_IDX(_i) ((_i)&(MAX_PENDING_REQS-1))
-static PEND_RING_IDX pending_prod, pending_cons;
-#define NR_PENDING_REQS (MAX_PENDING_REQS - pending_prod + pending_cons)
-
-static int do_usb_io_op(usbif_priv_t *usbif, int max_to_do);
-static void make_response(usbif_priv_t *usbif, unsigned long id,
- unsigned short op, int st, int inband,
- unsigned long actual_length);
-static void dispatch_usb_probe(usbif_priv_t *up, unsigned long id, unsigned
long port);
-static void dispatch_usb_io(usbif_priv_t *up, usbif_request_t *req);
-static void dispatch_usb_reset(usbif_priv_t *up, unsigned long portid);
-static owned_port_t *usbif_find_port(char *);
-
-/******************************************************************
- * PRIVATE DEBUG FUNCTIONS
- */
-
-#undef DEBUG
-#ifdef DEBUG
-
-static void dump_port(owned_port_t *p)
-{
- printk(KERN_DEBUG "owned_port_t @ %p\n"
- " usbif_priv @ %p\n"
- " path: %s\n"
- " guest_port: %d\n"
- " guest_address: %ld\n"
- " dev_present: %d\n"
- " dev @ %p\n"
- " ifaces: 0x%lx\n",
- p, p->usbif_priv, p->path, p->guest_port, p->guest_address,
- p->dev_present, p->dev, p->ifaces);
-}
-
-
-static void dump_request(usbif_request_t *req)
-{
- printk(KERN_DEBUG "id = 0x%lx\n"
- "devnum %d\n"
- "endpoint 0x%x\n"
- "direction %d\n"
- "speed %d\n"
- "pipe_type 0x%x\n"
- "transfer_buffer 0x%lx\n"
- "length 0x%lx\n"
- "transfer_flags 0x%lx\n"
- "setup = { 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x }\n"
- "iso_schedule = 0x%lx\n"
- "num_iso %ld\n",
- req->id, req->devnum, req->endpoint, req->direction, req->speed,
- req->pipe_type, req->transfer_buffer, req->length,
- req->transfer_flags, req->setup[0], req->setup[1], req->setup[2],
- req->setup[3], req->setup[4], req->setup[5], req->setup[6],
- req->setup[7], req->iso_schedule, req->num_iso);
-}
-
-static void dump_urb(struct urb *urb)
-{
- printk(KERN_DEBUG "dumping urb @ %p\n", urb);
-
-#define DUMP_URB_FIELD(name, format) \
- printk(KERN_DEBUG " " # name " " format "\n", urb-> name)
-
- DUMP_URB_FIELD(pipe, "0x%x");
- DUMP_URB_FIELD(status, "%d");
- DUMP_URB_FIELD(transfer_flags, "0x%x");
- DUMP_URB_FIELD(transfer_buffer, "%p");
- DUMP_URB_FIELD(transfer_buffer_length, "%d");
- DUMP_URB_FIELD(actual_length, "%d");
-}
-
-static void dump_response(usbif_response_t *resp)
-{
- printk(KERN_DEBUG "usbback: Sending response:\n"
- " id = 0x%x\n"
- " op = %d\n"
- " status = %d\n"
- " data = %d\n"
- " length = %d\n",
- resp->id, resp->op, resp->status, resp->data, resp->length);
-}
-
-#else /* DEBUG */
-
-#define dump_port(blah) ((void)0)
-#define dump_request(blah) ((void)0)
-#define dump_urb(blah) ((void)0)
-#define dump_response(blah) ((void)0)
-
-#endif /* DEBUG */
-
-/******************************************************************
- * MEMORY MANAGEMENT
- */
-
-static void fast_flush_area(int idx, int nr_pages)
-{
- multicall_entry_t mcl[MMAP_PAGES_PER_REQUEST];
- int i;
-
- for ( i = 0; i < nr_pages; i++ )
- {
- MULTI_update_va_mapping(mcl+i, MMAP_VADDR(idx, i),
- __pte(0), 0);
- }
-
- mcl[nr_pages-1].args[2] = UVMF_TLB_FLUSH|UVMF_ALL;
- if ( unlikely(HYPERVISOR_multicall(mcl, nr_pages) != 0) )
- BUG();
-}
-
-
-/******************************************************************
- * USB INTERFACE SCHEDULER LIST MAINTENANCE
- */
-
-static struct list_head usbio_schedule_list;
-static spinlock_t usbio_schedule_list_lock;
-
-static int __on_usbif_list(usbif_priv_t *up)
-{
- return up->usbif_list.next != NULL;
-}
-
-void remove_from_usbif_list(usbif_priv_t *up)
-{
- unsigned long flags;
- if ( !__on_usbif_list(up) ) return;
- spin_lock_irqsave(&usbio_schedule_list_lock, flags);
- if ( __on_usbif_list(up) )
- {
- list_del(&up->usbif_list);
- up->usbif_list.next = NULL;
- usbif_put(up);
- }
- spin_unlock_irqrestore(&usbio_schedule_list_lock, flags);
-}
-
-static void add_to_usbif_list_tail(usbif_priv_t *up)
-{
- unsigned long flags;
- if ( __on_usbif_list(up) ) return;
- spin_lock_irqsave(&usbio_schedule_list_lock, flags);
- if ( !__on_usbif_list(up) && (up->status == CONNECTED) )
- {
- list_add_tail(&up->usbif_list, &usbio_schedule_list);
- usbif_get(up);
- }
- spin_unlock_irqrestore(&usbio_schedule_list_lock, flags);
-}
-
-void free_pending(int pending_idx)
-{
- unsigned long flags;
-
- /* Free the pending request. */
- spin_lock_irqsave(&pend_prod_lock, flags);
- pending_ring[MASK_PEND_IDX(pending_prod++)] = pending_idx;
- spin_unlock_irqrestore(&pend_prod_lock, flags);
-}
-
-/******************************************************************
- * COMPLETION CALLBACK -- Called as urb->complete()
- */
-
-static void maybe_trigger_usbio_schedule(void);
-
-static void __end_usb_io_op(struct urb *purb)
-{
- pending_req_t *pending_req;
- int pending_idx;
-
- pending_req = purb->context;
-
- pending_idx = pending_req - pending_reqs;
-
- ASSERT(purb->actual_length <= purb->transfer_buffer_length);
- ASSERT(purb->actual_length <= pending_req->nr_pages * PAGE_SIZE);
-
- /* An error fails the entire request. */
- if ( purb->status )
- {
- printk(KERN_WARNING "URB @ %p failed. Status %d\n", purb,
purb->status);
- }
-
- if ( usb_pipetype(purb->pipe) == 0 )
- {
- int i;
- usbif_iso_t *sched = (usbif_iso_t *)MMAP_VADDR(pending_idx,
pending_req->nr_pages - 1);
-
- /* If we're dealing with an iso pipe, we need to copy back the
schedule. */
- for ( i = 0; i < purb->number_of_packets; i++ )
- {
- sched[i].length = purb->iso_frame_desc[i].actual_length;
- ASSERT(sched[i].buffer_offset ==
- purb->iso_frame_desc[i].offset);
- sched[i].status = purb->iso_frame_desc[i].status;
- }
- }
-
- fast_flush_area(pending_req - pending_reqs, pending_req->nr_pages);
-
- kfree(purb->setup_packet);
-
- make_response(pending_req->usbif_priv, pending_req->id,
- pending_req->operation, pending_req->status, 0,
purb->actual_length);
- usbif_put(pending_req->usbif_priv);
-
- usb_free_urb(purb);
-
- free_pending(pending_idx);
-
- rmb();
-
- /* Check for anything still waiting in the rings, having freed a
request... */
- maybe_trigger_usbio_schedule();
-}
-
-/******************************************************************
- * SCHEDULER FUNCTIONS
- */
-
-static DECLARE_WAIT_QUEUE_HEAD(usbio_schedule_wait);
-
-static int usbio_schedule(void *arg)
-{
- DECLARE_WAITQUEUE(wq, current);
-
- usbif_priv_t *up;
- struct list_head *ent;
-
- daemonize();
-
- for ( ; ; )
- {
- /* Wait for work to do. */
- add_wait_queue(&usbio_schedule_wait, &wq);
- set_current_state(TASK_INTERRUPTIBLE);
- if ( (NR_PENDING_REQS == MAX_PENDING_REQS) ||
- list_empty(&usbio_schedule_list) )
- schedule();
- __set_current_state(TASK_RUNNING);
- remove_wait_queue(&usbio_schedule_wait, &wq);
-
- /* Queue up a batch of requests. */
- while ( (NR_PENDING_REQS < MAX_PENDING_REQS) &&
- !list_empty(&usbio_schedule_list) )
- {
- ent = usbio_schedule_list.next;
- up = list_entry(ent, usbif_priv_t, usbif_list);
- usbif_get(up);
- remove_from_usbif_list(up);
- if ( do_usb_io_op(up, BATCH_PER_DOMAIN) )
- add_to_usbif_list_tail(up);
- usbif_put(up);
- }
- }
-}
-
-static void maybe_trigger_usbio_schedule(void)
-{
- /*
- * Needed so that two processes, who together make the following predicate
- * true, don't both read stale values and evaluate the predicate
- * incorrectly. Incredibly unlikely to stall the scheduler on x86, but...
- */
- smp_mb();
-
- if ( !list_empty(&usbio_schedule_list) )
- wake_up(&usbio_schedule_wait);
-}
-
-
-/******************************************************************************
- * NOTIFICATION FROM GUEST OS.
- */
-
-irqreturn_t usbif_be_int(int irq, void *dev_id, struct pt_regs *regs)
-{
- usbif_priv_t *up = dev_id;
-
- smp_mb();
-
- add_to_usbif_list_tail(up);
-
- /* Will in fact /always/ trigger an io schedule in this case. */
- maybe_trigger_usbio_schedule();
-
- return IRQ_HANDLED;
-}
-
-
-
-/******************************************************************
- * DOWNWARD CALLS -- These interface with the usb-device layer proper.
- */
-
-static int do_usb_io_op(usbif_priv_t *up, int max_to_do)
-{
- usbif_back_ring_t *usb_ring = &up->usb_ring;
- usbif_request_t *req;
- RING_IDX i, rp;
- int more_to_do = 0;
-
- rp = usb_ring->sring->req_prod;
- rmb(); /* Ensure we see queued requests up to 'rp'. */
-
- /* Take items off the comms ring, taking care not to overflow. */
- for ( i = usb_ring->req_cons;
- (i != rp) && !RING_REQUEST_CONS_OVERFLOW(usb_ring, i);
- i++ )
- {
- if ( (max_to_do-- == 0) || (NR_PENDING_REQS == MAX_PENDING_REQS) )
- {
- more_to_do = 1;
- break;
- }
-
- req = RING_GET_REQUEST(usb_ring, i);
-
- switch ( req->operation )
- {
- case USBIF_OP_PROBE:
- dispatch_usb_probe(up, req->id, req->port);
- break;
-
- case USBIF_OP_IO:
- /* Assemble an appropriate URB. */
- dispatch_usb_io(up, req);
- break;
-
- case USBIF_OP_RESET:
- dispatch_usb_reset(up, req->port);
- break;
-
- default:
- DPRINTK("error: unknown USB io operation [%d]\n",
- req->operation);
- make_response(up, req->id, req->operation, -EINVAL, 0, 0);
- break;
- }
- }
-
- usb_ring->req_cons = i;
-
- return more_to_do;
-}
-
-static owned_port_t *find_guest_port(usbif_priv_t *up, int port)
-{
- unsigned long flags;
- struct list_head *l;
-
- spin_lock_irqsave(&owned_ports_lock, flags);
- list_for_each(l, &owned_ports)
- {
- owned_port_t *p = list_entry(l, owned_port_t, list);
- if(p->usbif_priv == up && p->guest_port == port)
- {
- spin_unlock_irqrestore(&owned_ports_lock, flags);
- return p;
- }
- }
- spin_unlock_irqrestore(&owned_ports_lock, flags);
-
- return NULL;
-}
-
-static void dispatch_usb_reset(usbif_priv_t *up, unsigned long portid)
-{
- owned_port_t *port = find_guest_port(up, portid);
- int ret = 0;
-
-
- /* Allowing the guest to actually reset the device causes more problems
- * than it's worth. We just fake it out in software but we will do a real
- * reset when the interface is destroyed. */
-
- dump_port(port);
-
- port->guest_address = 0;
- /* If there's an attached device then the port is now enabled. */
- if ( port->dev_present )
- port->enabled = 1;
- else
- port->enabled = 0;
-
- make_response(up, 0, USBIF_OP_RESET, ret, 0, 0);
-}
-
-static void dispatch_usb_probe(usbif_priv_t *up, unsigned long id, unsigned
long portid)
-{
- owned_port_t *port = find_guest_port(up, portid);
- int ret;
-
- if ( port != NULL )
- ret = port->dev_present;
- else
- {
- ret = -EINVAL;
- printk(KERN_INFO "dispatch_usb_probe(): invalid port probe request "
- "(port %ld)\n", portid);
- }
-
- /* Probe result is sent back in-band. Probes don't have an associated id
- * right now... */
- make_response(up, id, USBIF_OP_PROBE, ret, portid, 0);
-}
-
-/**
- * check_iso_schedule - safety check the isochronous schedule for an URB
- * @purb : the URB in question
- */
-static int check_iso_schedule(struct urb *purb)
-{
- int i;
- unsigned long total_length = 0;
-
- for ( i = 0; i < purb->number_of_packets; i++ )
- {
- struct usb_iso_packet_descriptor *desc = &purb->iso_frame_desc[i];
-
- if ( desc->offset >= purb->transfer_buffer_length
- || ( desc->offset + desc->length) > purb->transfer_buffer_length )
- return -EINVAL;
-
- total_length += desc->length;
-
- if ( total_length > purb->transfer_buffer_length )
- return -EINVAL;
- }
-
- return 0;
-}
-
-owned_port_t *find_port_for_request(usbif_priv_t *up, usbif_request_t *req);
-
-static void dispatch_usb_io(usbif_priv_t *up, usbif_request_t *req)
-{
- unsigned long buffer_mach;
- int i = 0, offset = 0,
- pending_idx = pending_ring[MASK_PEND_IDX(pending_cons)];
- pending_req_t *pending_req;
- unsigned long remap_prot;
- multicall_entry_t mcl[MMAP_PAGES_PER_REQUEST];
- struct urb *purb = NULL;
- owned_port_t *port;
- unsigned char *setup;
-
- dump_request(req);
-
- if ( NR_PENDING_REQS == MAX_PENDING_REQS )
- {
- printk(KERN_WARNING "usbback: Max requests already queued. "
- "Giving up!\n");
-
- return;
- }
-
- port = find_port_for_request(up, req);
-
- if ( port == NULL )
- {
- printk(KERN_WARNING "No such device! (%d)\n", req->devnum);
- dump_request(req);
-
- make_response(up, req->id, req->operation, -ENODEV, 0, 0);
- return;
- }
- else if ( !port->dev_present )
- {
- /* In normal operation, we'll only get here if a device is unplugged
- * and the frontend hasn't noticed yet. */
- make_response(up, req->id, req->operation, -ENODEV, 0, 0);
- return;
- }
-
-
- setup = kmalloc(8, GFP_KERNEL);
-
- if ( setup == NULL )
- goto no_mem;
-
- /* Copy request out for safety. */
- memcpy(setup, req->setup, 8);
-
- if( setup[0] == 0x0 && setup[1] == 0x5)
- {
- /* To virtualise the USB address space, we need to intercept
- * set_address messages and emulate. From the USB specification:
- * bmRequestType = 0x0;
- * Brequest = SET_ADDRESS (i.e. 0x5)
- * wValue = device address
- * wIndex = 0
- * wLength = 0
- * data = None
- */
- /* Store into the guest transfer buffer using cpu_to_le16 */
- port->guest_address = le16_to_cpu(*(u16 *)(setup + 2));
- /* Make a successful response. That was easy! */
-
- make_response(up, req->id, req->operation, 0, 0, 0);
-
- kfree(setup);
- return;
- }
- else if ( setup[0] == 0x0 && setup[1] == 0x9 )
- {
- /* The host kernel needs to know what device configuration is in use
- * because various error checks get confused otherwise. We just do
- * configuration settings here, under controlled conditions.
- */
-
- /* Ignore configuration setting and hope that the host kernel
- did it right. */
- /* usb_set_configuration(port->dev, setup[2]); */
-
- make_response(up, req->id, req->operation, 0, 0, 0);
-
- kfree(setup);
- return;
- }
- else if ( setup[0] == 0x1 && setup[1] == 0xB )
- {
- /* The host kernel needs to know what device interface is in use
- * because various error checks get confused otherwise. We just do
- * configuration settings here, under controlled conditions.
- */
- usb_set_interface(port->dev, (setup[4] | setup[5] << 8),
- (setup[2] | setup[3] << 8) );
-
- make_response(up, req->id, req->operation, 0, 0, 0);
-
- kfree(setup);
- return;
- }
-
- if ( ( req->transfer_buffer - (req->transfer_buffer & PAGE_MASK)
- + req->length )
- > MMAP_PAGES_PER_REQUEST * PAGE_SIZE )
- {
- printk(KERN_WARNING "usbback: request of %lu bytes too large\n",
- req->length);
- make_response(up, req->id, req->operation, -EINVAL, 0, 0);
- kfree(setup);
- return;
- }
-
- buffer_mach = req->transfer_buffer;
-
- if( buffer_mach == 0 )
- goto no_remap;
-
- ASSERT((req->length >> PAGE_SHIFT) <= MMAP_PAGES_PER_REQUEST);
- ASSERT(buffer_mach);
-
- /* Always map writeable for now. */
- remap_prot = _KERNPG_TABLE;
-
- for ( i = 0, offset = 0; offset < req->length;
- i++, offset += PAGE_SIZE )
- {
- MULTI_update_va_mapping_otherdomain(
- mcl+i, MMAP_VADDR(pending_idx, i),
- pfn_pte_ma(buffer_mach >> PAGE_SHIFT, remap_prot),
- 0, up->domid);
-
- phys_to_machine_mapping[__pa(MMAP_VADDR(pending_idx, i))>>PAGE_SHIFT] =
- FOREIGN_FRAME((buffer_mach + offset) >> PAGE_SHIFT);
-
- ASSERT(virt_to_machine(MMAP_VADDR(pending_idx, i))
- == buffer_mach + i << PAGE_SHIFT);
- }
-
- if ( req->pipe_type == 0 && req->num_iso > 0 ) /* Maybe schedule ISO... */
- {
- /* Map in ISO schedule, if necessary. */
- MULTI_update_va_mapping_otherdomain(
- mcl+i, MMAP_VADDR(pending_idx, i),
- pfn_pte_ma(req->iso_schedule >> PAGE_SHIFT, remap_prot),
- 0, up->domid);
-
- phys_to_machine_mapping[__pa(MMAP_VADDR(pending_idx, i))>>PAGE_SHIFT] =
- FOREIGN_FRAME(req->iso_schedule >> PAGE_SHIFT);
-
- i++;
- }
-
- if ( unlikely(HYPERVISOR_multicall(mcl, i) != 0) )
- BUG();
-
- {
- int j;
- for ( j = 0; j < i; j++ )
- {
- if ( unlikely(mcl[j].result != 0) )
- {
- printk(KERN_WARNING
- "invalid buffer %d -- could not remap it\n", j);
- fast_flush_area(pending_idx, i);
- goto bad_descriptor;
- }
- }
- }
-
- no_remap:
-
- ASSERT(i <= MMAP_PAGES_PER_REQUEST);
- ASSERT(i * PAGE_SIZE >= req->length);
-
- /* We have to do this because some things might complete out of order. */
- pending_req = &pending_reqs[pending_idx];
- pending_req->usbif_priv= up;
- pending_req->id = req->id;
- pending_req->operation = req->operation;
- pending_req->nr_pages = i;
-
- pending_cons++;
-
- usbif_get(up);
-
- /* Fill out an actual request for the USB layer. */
- purb = usb_alloc_urb(req->num_iso);
-
- if ( purb == NULL )
- {
- usbif_put(up);
- free_pending(pending_idx);
- goto no_mem;
- }
-
- purb->dev = port->dev;
- purb->context = pending_req;
- purb->transfer_buffer =
- (void *)(MMAP_VADDR(pending_idx, 0) + (buffer_mach & ~PAGE_MASK));
- if(buffer_mach == 0)
- purb->transfer_buffer = NULL;
- purb->complete = __end_usb_io_op;
- purb->transfer_buffer_length = req->length;
- purb->transfer_flags = req->transfer_flags;
-
- purb->pipe = 0;
- purb->pipe |= req->direction << 7;
- purb->pipe |= port->dev->devnum << 8;
- purb->pipe |= req->speed << 26;
- purb->pipe |= req->pipe_type << 30;
- purb->pipe |= req->endpoint << 15;
-
- purb->number_of_packets = req->num_iso;
-
- if ( purb->number_of_packets * sizeof(usbif_iso_t) > PAGE_SIZE )
- goto urb_error;
-
- /* Make sure there's always some kind of timeout. */
- purb->timeout = ( req->timeout > 0 ) ? (req->timeout * HZ) / 1000
- : 1000;
-
- purb->setup_packet = setup;
-
- if ( req->pipe_type == 0 ) /* ISO */
- {
- int j;
- usbif_iso_t *iso_sched = (usbif_iso_t *)MMAP_VADDR(pending_idx, i - 1);
-
- /* If we're dealing with an iso pipe, we need to copy in a schedule. */
- for ( j = 0; j < purb->number_of_packets; j++ )
- {
- purb->iso_frame_desc[j].length = iso_sched[j].length;
- purb->iso_frame_desc[j].offset = iso_sched[j].buffer_offset;
- iso_sched[j].status = 0;
- }
- }
-
- if ( check_iso_schedule(purb) != 0 )
- goto urb_error;
-
- if ( usb_submit_urb(purb) != 0 )
- goto urb_error;
-
- return;
-
- urb_error:
- dump_urb(purb);
- usbif_put(up);
- free_pending(pending_idx);
-
- bad_descriptor:
- kfree ( setup );
- if ( purb != NULL )
- usb_free_urb(purb);
- make_response(up, req->id, req->operation, -EINVAL, 0, 0);
- return;
-
- no_mem:
- if ( setup != NULL )
- kfree(setup);
- make_response(up, req->id, req->operation, -ENOMEM, 0, 0);
- return;
-}
-
-
-
-/******************************************************************
- * MISCELLANEOUS SETUP / TEARDOWN / DEBUGGING
- */
-
-
-static void make_response(usbif_priv_t *up, unsigned long id,
- unsigned short op, int st, int inband,
- unsigned long length)
-{
- usbif_response_t *resp;
- unsigned long flags;
- usbif_back_ring_t *usb_ring = &up->usb_ring;
-
- /* Place on the response ring for the relevant domain. */
- spin_lock_irqsave(&up->usb_ring_lock, flags);
- resp = RING_GET_RESPONSE(usb_ring, usb_ring->rsp_prod_pvt);
- resp->id = id;
- resp->operation = op;
- resp->status = st;
- resp->data = inband;
- resp->length = length;
- wmb(); /* Ensure other side can see the response fields. */
-
- dump_response(resp);
-
- usb_ring->rsp_prod_pvt++;
- RING_PUSH_RESPONSES(usb_ring);
- spin_unlock_irqrestore(&up->usb_ring_lock, flags);
-
- /* Kick the relevant domain. */
- notify_via_evtchn(up->evtchn);
-}
-
-/**
- * usbif_claim_port - claim devices on a port on behalf of guest
- *
- * Once completed, this will ensure that any device attached to that
- * port is claimed by this driver for use by the guest.
- */
-int usbif_claim_port(usbif_be_claim_port_t *msg)
-{
- owned_port_t *o_p;
-
- /* Sanity... */
- if ( usbif_find_port(msg->path) != NULL )
- {
- printk(KERN_WARNING "usbback: Attempted to claim USB port "
- "we already own!\n");
- return -EINVAL;
- }
-
- /* No need for a slab cache - this should be infrequent. */
- o_p = kmalloc(sizeof(owned_port_t), GFP_KERNEL);
-
- if ( o_p == NULL )
- return -ENOMEM;
-
- o_p->enabled = 0;
- o_p->usbif_priv = usbif_find(msg->domid);
- o_p->guest_port = msg->usbif_port;
- o_p->dev_present = 0;
- o_p->guest_address = 0; /* Default address. */
-
- strcpy(o_p->path, msg->path);
-
- spin_lock_irq(&owned_ports_lock);
-
- list_add(&o_p->list, &owned_ports);
-
- spin_unlock_irq(&owned_ports_lock);
-
- printk(KERN_INFO "usbback: Claimed USB port (%s) for %d.%d\n", o_p->path,
- msg->domid, msg->usbif_port);
-
- /* Force a reprobe for unclaimed devices. */
- usb_scan_devices();
-
- return 0;
-}
-
-owned_port_t *find_port_for_request(usbif_priv_t *up, usbif_request_t *req)
-{
- unsigned long flags;
- struct list_head *port;
-
- /* I'm assuming this is not called from IRQ context - correct? I think
- * it's probably only called in response to control messages or plug events
- * in the USB hub kernel thread, so should be OK. */
- spin_lock_irqsave(&owned_ports_lock, flags);
- list_for_each(port, &owned_ports)
- {
- owned_port_t *p = list_entry(port, owned_port_t, list);
- if(p->usbif_priv == up && p->guest_address == req->devnum &&
p->enabled )
- {
- dump_port(p);
-
- spin_unlock_irqrestore(&owned_ports_lock, flags);
- return p;
- }
- }
- spin_unlock_irqrestore(&owned_ports_lock, flags);
-
- return NULL;
-}
-
-owned_port_t *__usbif_find_port(char *path)
-{
- struct list_head *port;
-
- list_for_each(port, &owned_ports)
- {
- owned_port_t *p = list_entry(port, owned_port_t, list);
- if(!strcmp(path, p->path))
- {
- return p;
- }
- }
-
- return NULL;
-}
-
-owned_port_t *usbif_find_port(char *path)
-{
- owned_port_t *ret;
- unsigned long flags;
-
- spin_lock_irqsave(&owned_ports_lock, flags);
- ret = __usbif_find_port(path);
- spin_unlock_irqrestore(&owned_ports_lock, flags);
-
- return ret;
-}
-
-
-static void *probe(struct usb_device *dev, unsigned iface,
- const struct usb_device_id *id)
-{
- owned_port_t *p;
-
- /* We don't care what the device is - if we own the port, we want it. We
- * don't deal with device-specifics in this driver, so we don't care what
- * the device actually is ;-) */
- if ( ( p = usbif_find_port(dev->devpath) ) != NULL )
- {
- printk(KERN_INFO "usbback: claimed device attached to owned port\n");
-
- p->dev_present = 1;
- p->dev = dev;
- set_bit(iface, &p->ifaces);
-
- return p->usbif_priv;
- }
- else
- printk(KERN_INFO "usbback: hotplug for non-owned port (%s),
ignoring\n",
- dev->devpath);
-
-
- return NULL;
-}
-
-static void disconnect(struct usb_device *dev, void *usbif)
-{
- /* Note the device is removed so we can tell the guest when it probes. */
- owned_port_t *port = usbif_find_port(dev->devpath);
- port->dev_present = 0;
- port->dev = NULL;
- port->ifaces = 0;
-}
-
-
-struct usb_driver driver =
-{
- .owner = THIS_MODULE,
- .name = "Xen USB Backend",
- .probe = probe,
- .disconnect = disconnect,
- .id_table = NULL,
-};
-
-/* __usbif_release_port - internal mechanics for releasing a port */
-void __usbif_release_port(owned_port_t *p)
-{
- int i;
-
- for ( i = 0; p->ifaces != 0; i++)
- if ( p->ifaces & 1 << i )
- {
- usb_driver_release_interface(&driver, usb_ifnum_to_if(p->dev, i));
- clear_bit(i, &p->ifaces);
- }
- list_del(&p->list);
-
- /* Reset the real device. We don't simulate disconnect / probe for other
- * drivers in this kernel because we assume the device is completely under
- * the control of ourselves (i.e. the guest!). This should ensure that the
- * device is in a sane state for the next customer ;-) */
-
- /* MAW NB: we're not resetting the real device here. This looks perfectly
- * valid to me but it causes memory corruption. We seem to get away with
not
- * resetting for now, although it'd be nice to have this tracked down. */
-/* if ( p->dev != NULL) */
-/* usb_reset_device(p->dev); */
-
- kfree(p);
-}
-
-
-/**
- * usbif_release_port - stop claiming devices on a port on behalf of guest
- */
-void usbif_release_port(usbif_be_release_port_t *msg)
-{
- owned_port_t *p;
-
- spin_lock_irq(&owned_ports_lock);
- p = __usbif_find_port(msg->path);
- __usbif_release_port(p);
- spin_unlock_irq(&owned_ports_lock);
-}
-
-void usbif_release_ports(usbif_priv_t *up)
-{
- struct list_head *port, *tmp;
- unsigned long flags;
-
- spin_lock_irqsave(&owned_ports_lock, flags);
- list_for_each_safe(port, tmp, &owned_ports)
- {
- owned_port_t *p = list_entry(port, owned_port_t, list);
- if ( p->usbif_priv == up )
- __usbif_release_port(p);
- }
- spin_unlock_irqrestore(&owned_ports_lock, flags);
-}
-
-static int __init usbif_init(void)
-{
- int i;
-
- if ( !(xen_start_info.flags & SIF_INITDOMAIN) &&
- !(xen_start_info.flags & SIF_USB_BE_DOMAIN) )
- return 0;
-
- if ( (mmap_vstart = allocate_empty_lowmem_region(MMAP_PAGES)) == 0 )
- BUG();
-
- pending_cons = 0;
- pending_prod = MAX_PENDING_REQS;
- memset(pending_reqs, 0, sizeof(pending_reqs));
- for ( i = 0; i < MAX_PENDING_REQS; i++ )
- pending_ring[i] = i;
-
- spin_lock_init(&pend_prod_lock);
-
- spin_lock_init(&owned_ports_lock);
- INIT_LIST_HEAD(&owned_ports);
-
- spin_lock_init(&usbio_schedule_list_lock);
- INIT_LIST_HEAD(&usbio_schedule_list);
-
- if ( kernel_thread(usbio_schedule, 0, CLONE_FS | CLONE_FILES) < 0 )
- BUG();
-
- usbif_interface_init();
-
- usbif_ctrlif_init();
-
- usb_register(&driver);
-
- printk(KERN_INFO "Xen USB Backend Initialised");
-
- return 0;
-}
-
-__initcall(usbif_init);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/usbfront/usbfront.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/usbfront/usbfront.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,1738 +0,0 @@
-/*
- * Xen Virtual USB Frontend Driver
- *
- * This file contains the first version of the Xen virtual USB hub
- * that I've managed not to delete by mistake (3rd time lucky!).
- *
- * Based on Linux's uhci.c, original copyright notices are displayed
- * below. Portions also (c) 2004 Intel Research Cambridge
- * and (c) 2004, 2005 Mark Williamson
- *
- * Contact <mark.williamson@xxxxxxxxxxxx> or
- * <xen-devel@xxxxxxxxxxxxxxxxxxxxx> regarding this code.
- *
- * Still to be (maybe) implemented:
- * - migration / backend restart support?
- * - support for building / using as a module
- */
-
-/*
- * Universal Host Controller Interface driver for USB.
- *
- * Maintainer: Johannes Erdfelt <johannes@xxxxxxxxxxx>
- *
- * (C) Copyright 1999 Linus Torvalds
- * (C) Copyright 1999-2002 Johannes Erdfelt, johannes@xxxxxxxxxxx
- * (C) Copyright 1999 Randy Dunlap
- * (C) Copyright 1999 Georg Acher, acher@xxxxxxxxx
- * (C) Copyright 1999 Deti Fliegl, deti@xxxxxxxxx
- * (C) Copyright 1999 Thomas Sailer, sailer@xxxxxxxxxxxxxx
- * (C) Copyright 1999 Roman Weissgaerber, weissg@xxxxxxxxx
- * (C) Copyright 2000 Yggdrasil Computing, Inc. (port of new PCI interface
- * support from usb-ohci.c by Adam Richter, adam@xxxxxxxxxxxxx).
- * (C) Copyright 1999 Gregory P. Smith (from usb-ohci.c)
- *
- * Intel documents this fairly well, and as far as I know there
- * are no royalties or anything like that, but even so there are
- * people who decided that they want to do the same thing in a
- * completely different way.
- *
- * WARNING! The USB documentation is downright evil. Most of it
- * is just crap, written by a committee. You're better off ignoring
- * most of it, the important stuff is:
- * - the low-level protocol (fairly simple but lots of small details)
- * - working around the horridness of the rest
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-#include <linux/smp_lock.h>
-#include <linux/errno.h>
-#include <linux/interrupt.h>
-#include <linux/spinlock.h>
-#ifdef CONFIG_USB_DEBUG
-#define DEBUG
-#else
-#undef DEBUG
-#endif
-#include <linux/usb.h>
-
-#include <asm/irq.h>
-#include <asm/system.h>
-
-#include "xhci.h"
-
-#include "../../../../../drivers/usb/hcd.h"
-
-#include <asm-xen/xen-public/io/usbif.h>
-#include <asm/ctrl_if.h>
-#include <asm/xen-public/io/domain_controller.h>
-
-/*
- * Version Information
- */
-#define DRIVER_VERSION "v1.0"
-#define DRIVER_AUTHOR "Linus 'Frodo Rabbit' Torvalds, Johannes Erdfelt, " \
- "Randy Dunlap, Georg Acher, Deti Fliegl, " \
- "Thomas Sailer, Roman Weissgaerber, Mark Williamson"
-#define DRIVER_DESC "Xen Virtual USB Host Controller Interface"
-
-/*
- * debug = 0, no debugging messages
- * debug = 1, dump failed URB's except for stalls
- * debug = 2, dump all failed URB's (including stalls)
- */
-#ifdef DEBUG
-static int debug = 1;
-#else
-static int debug = 0;
-#endif
-MODULE_PARM(debug, "i");
-MODULE_PARM_DESC(debug, "Debug level");
-static char *errbuf;
-#define ERRBUF_LEN (PAGE_SIZE * 8)
-
-static int rh_submit_urb(struct urb *urb);
-static int rh_unlink_urb(struct urb *urb);
-static int xhci_unlink_urb(struct urb *urb);
-static void xhci_call_completion(struct urb *urb);
-static void xhci_drain_ring(void);
-static void xhci_transfer_result(struct xhci *xhci, struct urb *urb);
-static void xhci_finish_completion(void);
-
-#define MAX_URB_LOOP 2048 /* Maximum number of linked URB's */
-
-static kmem_cache_t *xhci_up_cachep; /* urb_priv cache */
-static struct xhci *xhci; /* XHCI structure for the interface */
-
-/******************************************************************************
- * DEBUGGING
- */
-
-#ifdef DEBUG
-
-static void dump_urb(struct urb *urb)
-{
- printk(KERN_DEBUG "dumping urb @ %p\n"
- " hcpriv = %p\n"
- " next = %p\n"
- " dev = %p\n"
- " pipe = 0x%lx\n"
- " status = %d\n"
- " transfer_flags = 0x%lx\n"
- " transfer_buffer = %p\n"
- " transfer_buffer_length = %d\n"
- " actual_length = %d\n"
- " bandwidth = %d\n"
- " setup_packet = %p\n",
- urb, urb->hcpriv, urb->next, urb->dev, urb->pipe, urb->status,
- urb->transfer_flags, urb->transfer_buffer,
- urb->transfer_buffer_length, urb->actual_length, urb->bandwidth,
- urb->setup_packet);
- if ( urb->setup_packet != NULL )
- printk(KERN_DEBUG
- "setup = { 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x }\n",
- urb->setup_packet[0], urb->setup_packet[1],
- urb->setup_packet[2], urb->setup_packet[3],
- urb->setup_packet[4], urb->setup_packet[5],
- urb->setup_packet[6], urb->setup_packet[7]);
- printk(KERN_DEBUG "complete = %p\n"
- "interval = %d\n", urb->complete, urb->interval);
-
-}
-
-static void xhci_show_resp(usbif_response_t *r)
-{
- printk(KERN_DEBUG "dumping response @ %p\n"
- " id=0x%lx\n"
- " op=0x%x\n"
- " data=0x%x\n"
- " status=0x%x\n"
- " length=0x%lx\n",
- r->id, r->operation, r->data, r->status, r->length);
-}
-
-#define DPRINK(...) printk(KERN_DEBUG __VA_ARGS__)
-
-#else /* DEBUG */
-
-#define dump_urb(blah) ((void)0)
-#define xhci_show_resp(blah) ((void)0)
-#define DPRINTK(blah,...) ((void)0)
-
-#endif /* DEBUG */
-
-/******************************************************************************
- * RING REQUEST HANDLING
- */
-
-#define RING_PLUGGED(_hc) ( RING_FULL(&_hc->usb_ring) || _hc->recovery )
-
-/**
- * xhci_construct_isoc - add isochronous information to a request
- */
-static int xhci_construct_isoc(usbif_request_t *req, struct urb *urb)
-{
- usbif_iso_t *schedule;
- int i;
- struct urb_priv *urb_priv = urb->hcpriv;
-
- req->num_iso = urb->number_of_packets;
- schedule = (usbif_iso_t *)__get_free_page(GFP_KERNEL);
-
- if ( schedule == NULL )
- return -ENOMEM;
-
- for ( i = 0; i < req->num_iso; i++ )
- {
- schedule[i].buffer_offset = urb->iso_frame_desc[i].offset;
- schedule[i].length = urb->iso_frame_desc[i].length;
- }
-
- urb_priv->schedule = schedule;
- req->iso_schedule = virt_to_machine(schedule);
-
- return 0;
-}
-
-/**
- * xhci_queue_req - construct and queue request for an URB
- */
-static int xhci_queue_req(struct urb *urb)
-{
- unsigned long flags;
- usbif_request_t *req;
- usbif_front_ring_t *usb_ring = &xhci->usb_ring;
-
-#if DEBUG
- printk(KERN_DEBUG
- "usbif = %p, req_prod = %d (@ 0x%lx), resp_prod = %d, resp_cons
= %d\n",
- usbif, usbif->req_prod, virt_to_machine(&usbif->req_prod),
- usbif->resp_prod, xhci->usb_resp_cons);
-#endif
-
- spin_lock_irqsave(&xhci->ring_lock, flags);
-
- if ( RING_PLUGGED(xhci) )
- {
- printk(KERN_WARNING
- "xhci_queue_req(): USB ring plugged, not queuing
request\n");
- spin_unlock_irqrestore(&xhci->ring_lock, flags);
- return -ENOBUFS;
- }
-
- /* Stick something in the shared communications ring. */
- req = RING_GET_REQUEST(usb_ring, usb_ring->req_prod_pvt);
-
- req->operation = USBIF_OP_IO;
- req->port = 0; /* We don't care what the port is. */
- req->id = (unsigned long) urb->hcpriv;
- req->transfer_buffer = virt_to_machine(urb->transfer_buffer);
- req->devnum = usb_pipedevice(urb->pipe);
- req->direction = usb_pipein(urb->pipe);
- req->speed = usb_pipeslow(urb->pipe);
- req->pipe_type = usb_pipetype(urb->pipe);
- req->length = urb->transfer_buffer_length;
- req->transfer_flags = urb->transfer_flags;
- req->endpoint = usb_pipeendpoint(urb->pipe);
- req->speed = usb_pipeslow(urb->pipe);
- req->timeout = urb->timeout * (1000 / HZ);
-
- if ( usb_pipetype(urb->pipe) == 0 ) /* ISO */
- {
- int ret = xhci_construct_isoc(req, urb);
- if ( ret != 0 )
- return ret;
- }
-
- if(urb->setup_packet != NULL)
- memcpy(req->setup, urb->setup_packet, 8);
- else
- memset(req->setup, 0, 8);
-
- usb_ring->req_prod_pvt++;
- RING_PUSH_REQUESTS(usb_ring);
-
- spin_unlock_irqrestore(&xhci->ring_lock, flags);
-
- notify_via_evtchn(xhci->evtchn);
-
- DPRINTK("Queued request for an URB.\n");
- dump_urb(urb);
-
- return -EINPROGRESS;
-}
-
-/**
- * xhci_queue_probe - queue a probe request for a particular port
- */
-static inline usbif_request_t *xhci_queue_probe(usbif_vdev_t port)
-{
- usbif_request_t *req;
- usbif_front_ring_t *usb_ring = &xhci->usb_ring;
-
-#if DEBUG
- printk(KERN_DEBUG
- "queuing probe: req_prod = %d (@ 0x%lx), resp_prod = %d, "
- "resp_cons = %d\n", usbif->req_prod,
- virt_to_machine(&usbif->req_prod),
- usbif->resp_prod, xhci->usb_resp_cons);
-#endif
-
- /* This is always called from the timer interrupt. */
- spin_lock(&xhci->ring_lock);
-
- if ( RING_PLUGGED(xhci) )
- {
- printk(KERN_WARNING
- "xhci_queue_probe(): ring full, not queuing request\n");
- spin_unlock(&xhci->ring_lock);
- return NULL;
- }
-
- /* Stick something in the shared communications ring. */
- req = RING_GET_REQUEST(usb_ring, usb_ring->req_prod_pvt);
-
- memset(req, 0, sizeof(*req));
-
- req->operation = USBIF_OP_PROBE;
- req->port = port;
-
- usb_ring->req_prod_pvt++;
- RING_PUSH_REQUESTS(usb_ring);
-
- spin_unlock(&xhci->ring_lock);
-
- notify_via_evtchn(xhci->evtchn);
-
- return req;
-}
-
-/**
- * xhci_port_reset - queue a reset request for a particular port
- */
-static int xhci_port_reset(usbif_vdev_t port)
-{
- usbif_request_t *req;
- usbif_front_ring_t *usb_ring = &xhci->usb_ring;
-
- /* Only ever happens from process context (hub thread). */
- spin_lock_irq(&xhci->ring_lock);
-
- if ( RING_PLUGGED(xhci) )
- {
- printk(KERN_WARNING
- "xhci_port_reset(): ring plugged, not queuing
request\n");
- spin_unlock_irq(&xhci->ring_lock);
- return -ENOBUFS;
- }
-
- /* We only reset one port at a time, so we only need one variable per
- * hub. */
- xhci->awaiting_reset = 1;
-
- /* Stick something in the shared communications ring. */
- req = RING_GET_REQUEST(usb_ring, usb_ring->req_prod_pvt);
-
- memset(req, 0, sizeof(*req));
-
- req->operation = USBIF_OP_RESET;
- req->port = port;
-
- usb_ring->req_prod_pvt++;
- RING_PUSH_REQUESTS(usb_ring);
-
- spin_unlock_irq(&xhci->ring_lock);
-
- notify_via_evtchn(xhci->evtchn);
-
- while ( xhci->awaiting_reset > 0 )
- {
- mdelay(1);
- xhci_drain_ring();
- }
-
- xhci->rh.ports[port].pe = 1;
- xhci->rh.ports[port].pe_chg = 1;
-
- return xhci->awaiting_reset;
-}
-
-
-/******************************************************************************
- * RING RESPONSE HANDLING
- */
-
-static void receive_usb_reset(usbif_response_t *resp)
-{
- xhci->awaiting_reset = resp->status;
- rmb();
-
-}
-
-static void receive_usb_probe(usbif_response_t *resp)
-{
- spin_lock(&xhci->rh.port_state_lock);
-
- if ( resp->status >= 0 )
- {
- if ( resp->status == 1 )
- {
- /* If theres a device there and there wasn't one before there must
- * have been a connection status change. */
- if( xhci->rh.ports[resp->data].cs == 0 )
- {
- xhci->rh.ports[resp->data].cs = 1;
- xhci->rh.ports[resp->data].cs_chg = 1;
- }
- }
- else if ( resp->status == 0 )
- {
- if(xhci->rh.ports[resp->data].cs == 1 )
- {
- xhci->rh.ports[resp->data].cs = 0;
- xhci->rh.ports[resp->data].cs_chg = 1;
- xhci->rh.ports[resp->data].pe = 0;
- /* According to USB Spec v2.0, 11.24.2.7.2.2, we don't need
- * to set pe_chg since an error has not occurred. */
- }
- }
- else
- printk(KERN_WARNING "receive_usb_probe(): unexpected status %d "
- "for port %d\n", resp->status, resp->data);
- }
- else if ( resp->status < 0)
- printk(KERN_WARNING "receive_usb_probe(): got error status %d\n",
- resp->status);
-
- spin_unlock(&xhci->rh.port_state_lock);
-}
-
-static void receive_usb_io(usbif_response_t *resp)
-{
- struct urb_priv *urbp = (struct urb_priv *)resp->id;
- struct urb *urb = urbp->urb;
-
- urb->actual_length = resp->length;
- urbp->in_progress = 0;
-
- if( usb_pipetype(urb->pipe) == 0 ) /* ISO */
- {
- int i;
-
- /* Copy ISO schedule results back in. */
- for ( i = 0; i < urb->number_of_packets; i++ )
- {
- urb->iso_frame_desc[i].status
- = urbp->schedule[i].status;
- urb->iso_frame_desc[i].actual_length
- = urbp->schedule[i].length;
- }
- free_page((unsigned long)urbp->schedule);
- }
-
- /* Only set status if it's not been changed since submission. It might
- * have been changed if the URB has been unlinked asynchronously, for
- * instance. */
- if ( urb->status == -EINPROGRESS )
- urbp->status = urb->status = resp->status;
-}
-
-/**
- * xhci_drain_ring - drain responses from the ring, calling handlers
- *
- * This may be called from interrupt context when an event is received from the
- * backend domain, or sometimes in process context whilst waiting for a port
- * reset or URB completion.
- */
-static void xhci_drain_ring(void)
-{
- struct list_head *tmp, *head;
- usbif_front_ring_t *usb_ring = &xhci->usb_ring;
- usbif_response_t *resp;
- RING_IDX i, rp;
-
- /* Walk the ring here to get responses, updating URBs to show what
- * completed. */
-
- rp = usb_ring->sring->rsp_prod;
- rmb(); /* Ensure we see queued requests up to 'rp'. */
-
- /* Take items off the comms ring, taking care not to overflow. */
- for ( i = usb_ring->rsp_cons; i != rp; i++ )
- {
- resp = RING_GET_RESPONSE(usb_ring, i);
-
- /* May need to deal with batching and with putting a ceiling on
- the number dispatched for performance and anti-dos reasons */
-
- xhci_show_resp(resp);
-
- switch ( resp->operation )
- {
- case USBIF_OP_PROBE:
- receive_usb_probe(resp);
- break;
-
- case USBIF_OP_IO:
- receive_usb_io(resp);
- break;
-
- case USBIF_OP_RESET:
- receive_usb_reset(resp);
- break;
-
- default:
- printk(KERN_WARNING
- "error: unknown USB io operation response [%d]\n",
- resp->operation);
- break;
- }
- }
-
- usb_ring->rsp_cons = i;
-
- /* Walk the list of pending URB's to see which ones completed and do
- * callbacks, etc. */
- spin_lock(&xhci->urb_list_lock);
- head = &xhci->urb_list;
- tmp = head->next;
- while (tmp != head) {
- struct urb *urb = list_entry(tmp, struct urb, urb_list);
-
- tmp = tmp->next;
-
- /* Checks the status and does all of the magic necessary */
- xhci_transfer_result(xhci, urb);
- }
- spin_unlock(&xhci->urb_list_lock);
-
- xhci_finish_completion();
-}
-
-
-static void xhci_interrupt(int irq, void *__xhci, struct pt_regs *regs)
-{
- xhci_drain_ring();
-}
-
-/******************************************************************************
- * HOST CONTROLLER FUNCTIONALITY
- */
-
-/**
- * no-op implementation of private device alloc / free routines
- */
-static int xhci_do_nothing_dev(struct usb_device *dev)
-{
- return 0;
-}
-
-static inline void xhci_add_complete(struct urb *urb)
-{
- struct urb_priv *urbp = (struct urb_priv *)urb->hcpriv;
- unsigned long flags;
-
- spin_lock_irqsave(&xhci->complete_list_lock, flags);
- list_add_tail(&urbp->complete_list, &xhci->complete_list);
- spin_unlock_irqrestore(&xhci->complete_list_lock, flags);
-}
-
-/* When this returns, the owner of the URB may free its
- * storage.
- *
- * We spin and wait for the URB to complete before returning.
- *
- * Call with urb->lock acquired.
- */
-static void xhci_delete_urb(struct urb *urb)
-{
- struct urb_priv *urbp;
-
- urbp = urb->hcpriv;
-
- /* If there's no urb_priv structure for this URB then it can't have
- * been submitted at all. */
- if ( urbp == NULL )
- return;
-
- /* For now we just spin until the URB completes. It shouldn't take too
- * long and we don't expect to have to do this very often. */
- while ( urb->status == -EINPROGRESS )
- {
- xhci_drain_ring();
- mdelay(1);
- }
-
- /* Now we know that further transfers to the buffer won't
- * occur, so we can safely return. */
-}
-
-static struct urb_priv *xhci_alloc_urb_priv(struct urb *urb)
-{
- struct urb_priv *urbp;
-
- urbp = kmem_cache_alloc(xhci_up_cachep, SLAB_ATOMIC);
- if (!urbp) {
- err("xhci_alloc_urb_priv: couldn't allocate memory for
urb_priv\n");
- return NULL;
- }
-
- memset((void *)urbp, 0, sizeof(*urbp));
-
- urbp->inserttime = jiffies;
- urbp->urb = urb;
- urbp->dev = urb->dev;
-
- INIT_LIST_HEAD(&urbp->complete_list);
-
- urb->hcpriv = urbp;
-
- return urbp;
-}
-
-/*
- * MUST be called with urb->lock acquired
- */
-/* When is this called? Do we need to stop the transfer (as we
- * currently do)? */
-static void xhci_destroy_urb_priv(struct urb *urb)
-{
- struct urb_priv *urbp;
-
- urbp = (struct urb_priv *)urb->hcpriv;
- if (!urbp)
- return;
-
- if (!list_empty(&urb->urb_list))
- warn("xhci_destroy_urb_priv: urb %p still on xhci->urb_list", urb);
-
- if (!list_empty(&urbp->complete_list))
- warn("xhci_destroy_urb_priv: urb %p still on xhci->complete_list",
urb);
-
- kmem_cache_free(xhci_up_cachep, urb->hcpriv);
-
- urb->hcpriv = NULL;
-}
-
-/**
- * Try to find URBs in progress on the same pipe to the same device.
- *
- * MUST be called with xhci->urb_list_lock acquired
- */
-static struct urb *xhci_find_urb_ep(struct xhci *xhci, struct urb *urb)
-{
- struct list_head *tmp, *head;
-
- /* We don't match Isoc transfers since they are special */
- if (usb_pipeisoc(urb->pipe))
- return NULL;
-
- head = &xhci->urb_list;
- tmp = head->next;
- while (tmp != head) {
- struct urb *u = list_entry(tmp, struct urb, urb_list);
-
- tmp = tmp->next;
-
- if (u->dev == urb->dev && u->pipe == urb->pipe &&
- u->status == -EINPROGRESS)
- return u;
- }
-
- return NULL;
-}
-
-static int xhci_submit_urb(struct urb *urb)
-{
- int ret = -EINVAL;
- unsigned long flags;
- struct urb *eurb;
- int bustime;
-
- DPRINTK("URB submitted to XHCI driver.\n");
- dump_urb(urb);
-
- if (!urb)
- return -EINVAL;
-
- if (!urb->dev || !urb->dev->bus || !urb->dev->bus->hcpriv) {
- warn("xhci_submit_urb: urb %p belongs to disconnected device or
bus?", urb);
- return -ENODEV;
- }
-
- if ( urb->dev->devpath == NULL )
- BUG();
-
- usb_inc_dev_use(urb->dev);
-
- spin_lock_irqsave(&xhci->urb_list_lock, flags);
- spin_lock(&urb->lock);
-
- if (urb->status == -EINPROGRESS || urb->status == -ECONNRESET ||
- urb->status == -ECONNABORTED) {
- dbg("xhci_submit_urb: urb not available to submit (status =
%d)", urb->status);
- /* Since we can have problems on the out path */
- spin_unlock(&urb->lock);
- spin_unlock_irqrestore(&xhci->urb_list_lock, flags);
- usb_dec_dev_use(urb->dev);
-
- return ret;
- }
-
- INIT_LIST_HEAD(&urb->urb_list);
- if (!xhci_alloc_urb_priv(urb)) {
- ret = -ENOMEM;
-
- goto out;
- }
-
- ( (struct urb_priv *)urb->hcpriv )->in_progress = 1;
-
- eurb = xhci_find_urb_ep(xhci, urb);
- if (eurb && !(urb->transfer_flags & USB_QUEUE_BULK)) {
- ret = -ENXIO;
-
- goto out;
- }
-
- /* Short circuit the virtual root hub */
- if (urb->dev == xhci->rh.dev) {
- ret = rh_submit_urb(urb);
-
- goto out;
- }
-
- switch (usb_pipetype(urb->pipe)) {
- case PIPE_CONTROL:
- case PIPE_BULK:
- ret = xhci_queue_req(urb);
- break;
-
- case PIPE_INTERRUPT:
- if (urb->bandwidth == 0) { /* not yet checked/allocated */
- bustime = usb_check_bandwidth(urb->dev, urb);
- if (bustime < 0)
- ret = bustime;
- else {
- ret = xhci_queue_req(urb);
- if (ret == -EINPROGRESS)
- usb_claim_bandwidth(urb->dev, urb,
- bustime, 0);
- }
- } else /* bandwidth is already set */
- ret = xhci_queue_req(urb);
- break;
-
- case PIPE_ISOCHRONOUS:
- if (urb->bandwidth == 0) { /* not yet checked/allocated */
- if (urb->number_of_packets <= 0) {
- ret = -EINVAL;
- break;
- }
- bustime = usb_check_bandwidth(urb->dev, urb);
- if (bustime < 0) {
- ret = bustime;
- break;
- }
-
- ret = xhci_queue_req(urb);
- if (ret == -EINPROGRESS)
- usb_claim_bandwidth(urb->dev, urb, bustime, 1);
- } else /* bandwidth is already set */
- ret = xhci_queue_req(urb);
- break;
- }
-out:
- urb->status = ret;
-
- if (ret == -EINPROGRESS) {
- /* We use _tail to make find_urb_ep more efficient */
- list_add_tail(&urb->urb_list, &xhci->urb_list);
-
- spin_unlock(&urb->lock);
- spin_unlock_irqrestore(&xhci->urb_list_lock, flags);
-
- return 0;
- }
-
- xhci_delete_urb(urb);
-
- spin_unlock(&urb->lock);
- spin_unlock_irqrestore(&xhci->urb_list_lock, flags);
-
- /* Only call completion if it was successful */
- if (!ret)
- xhci_call_completion(urb);
-
- return ret;
-}
-
-/*
- * Return the result of a transfer
- *
- * MUST be called with urb_list_lock acquired
- */
-static void xhci_transfer_result(struct xhci *xhci, struct urb *urb)
-{
- int ret = 0;
- unsigned long flags;
- struct urb_priv *urbp;
-
- /* The root hub is special */
- if (urb->dev == xhci->rh.dev)
- return;
-
- spin_lock_irqsave(&urb->lock, flags);
-
- urbp = (struct urb_priv *)urb->hcpriv;
-
- if ( ( (struct urb_priv *)urb->hcpriv )->in_progress )
- ret = -EINPROGRESS;
-
- if (urb->actual_length < urb->transfer_buffer_length) {
- if (urb->transfer_flags & USB_DISABLE_SPD) {
- ret = -EREMOTEIO;
- }
- }
-
- if (urb->status == -EPIPE)
- {
- ret = urb->status;
- /* endpoint has stalled - mark it halted */
- usb_endpoint_halt(urb->dev, usb_pipeendpoint(urb->pipe),
- usb_pipeout(urb->pipe));
- }
-
- if ((debug == 1 && ret != 0 && ret != -EPIPE) ||
- (ret != 0 && debug > 1)) {
- /* Some debugging code */
- dbg("xhci_result_interrupt/bulk() failed with status %x",
- status);
- }
-
- if (ret == -EINPROGRESS)
- goto out;
-
- switch (usb_pipetype(urb->pipe)) {
- case PIPE_CONTROL:
- case PIPE_BULK:
- case PIPE_ISOCHRONOUS:
- /* Release bandwidth for Interrupt or Isoc. transfers */
- /* Spinlock needed ? */
- if (urb->bandwidth)
- usb_release_bandwidth(urb->dev, urb, 1);
- xhci_delete_urb(urb);
- break;
- case PIPE_INTERRUPT:
- /* Interrupts are an exception */
- if (urb->interval)
- goto out_complete;
-
- /* Release bandwidth for Interrupt or Isoc. transfers */
- /* Spinlock needed ? */
- if (urb->bandwidth)
- usb_release_bandwidth(urb->dev, urb, 0);
- xhci_delete_urb(urb);
- break;
- default:
- info("xhci_transfer_result: unknown pipe type %d for urb %p\n",
- usb_pipetype(urb->pipe), urb);
- }
-
- /* Remove it from xhci->urb_list */
- list_del_init(&urb->urb_list);
-
-out_complete:
- xhci_add_complete(urb);
-
-out:
- spin_unlock_irqrestore(&urb->lock, flags);
-}
-
-static int xhci_unlink_urb(struct urb *urb)
-{
- unsigned long flags;
- struct urb_priv *urbp = urb->hcpriv;
-
- if (!urb)
- return -EINVAL;
-
- if (!urb->dev || !urb->dev->bus || !urb->dev->bus->hcpriv)
- return -ENODEV;
-
- spin_lock_irqsave(&xhci->urb_list_lock, flags);
- spin_lock(&urb->lock);
-
- /* Release bandwidth for Interrupt or Isoc. transfers */
- /* Spinlock needed ? */
- if (urb->bandwidth) {
- switch (usb_pipetype(urb->pipe)) {
- case PIPE_INTERRUPT:
- usb_release_bandwidth(urb->dev, urb, 0);
- break;
- case PIPE_ISOCHRONOUS:
- usb_release_bandwidth(urb->dev, urb, 1);
- break;
- default:
- break;
- }
- }
-
- if (urb->status != -EINPROGRESS) {
- spin_unlock(&urb->lock);
- spin_unlock_irqrestore(&xhci->urb_list_lock, flags);
- return 0;
- }
-
- list_del_init(&urb->urb_list);
-
- /* Short circuit the virtual root hub */
- if (urb->dev == xhci->rh.dev) {
- rh_unlink_urb(urb);
-
- spin_unlock(&urb->lock);
- spin_unlock_irqrestore(&xhci->urb_list_lock, flags);
-
- xhci_call_completion(urb);
- } else {
- if (urb->transfer_flags & USB_ASYNC_UNLINK) {
- /* We currently don't currently attempt to cancel URBs
- * that have been queued in the ring. We handle async
- * unlinked URBs when they complete. */
- urbp->status = urb->status = -ECONNABORTED;
- spin_unlock(&urb->lock);
- spin_unlock_irqrestore(&xhci->urb_list_lock, flags);
- } else {
- urb->status = -ENOENT;
-
- spin_unlock(&urb->lock);
- spin_unlock_irqrestore(&xhci->urb_list_lock, flags);
-
- if (in_interrupt()) { /* wait at least 1 frame */
- static int errorcount = 10;
-
- if (errorcount--)
- dbg("xhci_unlink_urb called from
interrupt for urb %p", urb);
- udelay(1000);
- } else
- schedule_timeout(1+1*HZ/1000);
-
- xhci_delete_urb(urb);
-
- xhci_call_completion(urb);
- }
- }
-
- return 0;
-}
-
-static void xhci_call_completion(struct urb *urb)
-{
- struct urb_priv *urbp;
- struct usb_device *dev = urb->dev;
- int is_ring = 0, killed, resubmit_interrupt, status;
- struct urb *nurb;
- unsigned long flags;
-
- spin_lock_irqsave(&urb->lock, flags);
-
- urbp = (struct urb_priv *)urb->hcpriv;
- if (!urbp || !urb->dev) {
- spin_unlock_irqrestore(&urb->lock, flags);
- return;
- }
-
- killed = (urb->status == -ENOENT || urb->status == -ECONNABORTED ||
- urb->status == -ECONNRESET);
- resubmit_interrupt = (usb_pipetype(urb->pipe) == PIPE_INTERRUPT &&
- urb->interval);
-
- nurb = urb->next;
- if (nurb && !killed) {
- int count = 0;
-
- while (nurb && nurb != urb && count < MAX_URB_LOOP) {
- if (nurb->status == -ENOENT ||
- nurb->status == -ECONNABORTED ||
- nurb->status == -ECONNRESET) {
- killed = 1;
- break;
- }
-
- nurb = nurb->next;
- count++;
- }
-
- if (count == MAX_URB_LOOP)
- err("xhci_call_completion: too many linked URB's, loop?
(first loop)");
-
- /* Check to see if chain is a ring */
- is_ring = (nurb == urb);
- }
-
- status = urbp->status;
- if (!resubmit_interrupt || killed)
- /* We don't need urb_priv anymore */
- xhci_destroy_urb_priv(urb);
-
- if (!killed)
- urb->status = status;
-
- spin_unlock_irqrestore(&urb->lock, flags);
-
- if (urb->complete)
- urb->complete(urb);
-
- if (resubmit_interrupt)
- /* Recheck the status. The completion handler may have */
- /* unlinked the resubmitting interrupt URB */
- killed = (urb->status == -ENOENT ||
- urb->status == -ECONNABORTED ||
- urb->status == -ECONNRESET);
-
- if (resubmit_interrupt && !killed) {
- if ( urb->dev != xhci->rh.dev )
- xhci_queue_req(urb); /* XXX What if this fails? */
- /* Don't need to resubmit URBs for the virtual root dev. */
- } else {
- if (is_ring && !killed) {
- urb->dev = dev;
- xhci_submit_urb(urb);
- } else {
- /* We decrement the usage count after we're done */
- /* with everything */
- usb_dec_dev_use(dev);
- }
- }
-}
-
-static void xhci_finish_completion(void)
-{
- struct list_head *tmp, *head;
- unsigned long flags;
-
- spin_lock_irqsave(&xhci->complete_list_lock, flags);
- head = &xhci->complete_list;
- tmp = head->next;
- while (tmp != head) {
- struct urb_priv *urbp = list_entry(tmp, struct urb_priv,
- complete_list);
- struct urb *urb = urbp->urb;
-
- list_del_init(&urbp->complete_list);
- spin_unlock_irqrestore(&xhci->complete_list_lock, flags);
-
- xhci_call_completion(urb);
-
- spin_lock_irqsave(&xhci->complete_list_lock, flags);
- head = &xhci->complete_list;
- tmp = head->next;
- }
- spin_unlock_irqrestore(&xhci->complete_list_lock, flags);
-}
-
-static struct usb_operations xhci_device_operations = {
- .allocate = xhci_do_nothing_dev,
- .deallocate = xhci_do_nothing_dev,
- /* It doesn't look like any drivers actually care what the frame number
- * is at the moment! If necessary, we could approximate the current
- * frame nubmer by passing it from the backend in response messages. */
- .get_frame_number = NULL,
- .submit_urb = xhci_submit_urb,
- .unlink_urb = xhci_unlink_urb
-};
-
-/******************************************************************************
- * VIRTUAL ROOT HUB EMULATION
- */
-
-static __u8 root_hub_dev_des[] =
-{
- 0x12, /* __u8 bLength; */
- 0x01, /* __u8 bDescriptorType; Device */
- 0x00, /* __u16 bcdUSB; v1.0 */
- 0x01,
- 0x09, /* __u8 bDeviceClass; HUB_CLASSCODE */
- 0x00, /* __u8 bDeviceSubClass; */
- 0x00, /* __u8 bDeviceProtocol; */
- 0x08, /* __u8 bMaxPacketSize0; 8 Bytes */
- 0x00, /* __u16 idVendor; */
- 0x00,
- 0x00, /* __u16 idProduct; */
- 0x00,
- 0x00, /* __u16 bcdDevice; */
- 0x00,
- 0x00, /* __u8 iManufacturer; */
- 0x02, /* __u8 iProduct; */
- 0x01, /* __u8 iSerialNumber; */
- 0x01 /* __u8 bNumConfigurations; */
-};
-
-
-/* Configuration descriptor */
-static __u8 root_hub_config_des[] =
-{
- 0x09, /* __u8 bLength; */
- 0x02, /* __u8 bDescriptorType; Configuration */
- 0x19, /* __u16 wTotalLength; */
- 0x00,
- 0x01, /* __u8 bNumInterfaces; */
- 0x01, /* __u8 bConfigurationValue; */
- 0x00, /* __u8 iConfiguration; */
- 0x40, /* __u8 bmAttributes;
- Bit 7: Bus-powered, 6: Self-powered,
- Bit 5 Remote-wakeup, 4..0: resvd */
- 0x00, /* __u8 MaxPower; */
-
- /* interface */
- 0x09, /* __u8 if_bLength; */
- 0x04, /* __u8 if_bDescriptorType; Interface */
- 0x00, /* __u8 if_bInterfaceNumber; */
- 0x00, /* __u8 if_bAlternateSetting; */
- 0x01, /* __u8 if_bNumEndpoints; */
- 0x09, /* __u8 if_bInterfaceClass; HUB_CLASSCODE */
- 0x00, /* __u8 if_bInterfaceSubClass; */
- 0x00, /* __u8 if_bInterfaceProtocol; */
- 0x00, /* __u8 if_iInterface; */
-
- /* endpoint */
- 0x07, /* __u8 ep_bLength; */
- 0x05, /* __u8 ep_bDescriptorType; Endpoint */
- 0x81, /* __u8 ep_bEndpointAddress; IN Endpoint 1 */
- 0x03, /* __u8 ep_bmAttributes; Interrupt */
- 0x08, /* __u16 ep_wMaxPacketSize; 8 Bytes */
- 0x00,
- 0xff /* __u8 ep_bInterval; 255 ms */
-};
-
-static __u8 root_hub_hub_des[] =
-{
- 0x09, /* __u8 bLength; */
- 0x29, /* __u8 bDescriptorType; Hub-descriptor */
- 0x02, /* __u8 bNbrPorts; */
- 0x00, /* __u16 wHubCharacteristics; */
- 0x00,
- 0x01, /* __u8 bPwrOn2pwrGood; 2ms */
- 0x00, /* __u8 bHubContrCurrent; 0 mA */
- 0x00, /* __u8 DeviceRemovable; *** 7 Ports max ***
*/
- 0xff /* __u8 PortPwrCtrlMask; *** 7 ports max ***
*/
-};
-
-/* prepare Interrupt pipe transaction data; HUB INTERRUPT ENDPOINT */
-static int rh_send_irq(struct urb *urb)
-{
- struct urb_priv *urbp = (struct urb_priv *)urb->hcpriv;
- xhci_port_t *ports = xhci->rh.ports;
- unsigned long flags;
- int i, len = 1;
- __u16 data = 0;
-
- spin_lock_irqsave(&urb->lock, flags);
- for (i = 0; i < xhci->rh.numports; i++) {
- /* Set a bit if anything at all has changed on the port, as per
- * USB spec 11.12 */
- data |= (ports[i].cs_chg || ports[i].pe_chg )
- ? (1 << (i + 1))
- : 0;
-
- len = (i + 1) / 8 + 1;
- }
-
- *(__u16 *) urb->transfer_buffer = cpu_to_le16(data);
- urb->actual_length = len;
- urbp->status = 0;
-
- spin_unlock_irqrestore(&urb->lock, flags);
-
- if ((data > 0) && (xhci->rh.send != 0)) {
- dbg("root-hub INT complete: data: %x", data);
- xhci_call_completion(urb);
- }
-
- return 0;
-}
-
-/* Virtual Root Hub INTs are polled by this timer every "interval" ms */
-static int rh_init_int_timer(struct urb *urb);
-
-static void rh_int_timer_do(unsigned long ptr)
-{
- struct urb *urb = (struct urb *)ptr;
- struct list_head list, *tmp, *head;
- unsigned long flags;
- int i;
-
- for ( i = 0; i < xhci->rh.numports; i++)
- xhci_queue_probe(i);
-
- if (xhci->rh.send)
- rh_send_irq(urb);
-
- INIT_LIST_HEAD(&list);
-
- spin_lock_irqsave(&xhci->urb_list_lock, flags);
- head = &xhci->urb_list;
- tmp = head->next;
- while (tmp != head) {
- struct urb *u = list_entry(tmp, struct urb, urb_list);
- struct urb_priv *up = (struct urb_priv *)u->hcpriv;
-
- tmp = tmp->next;
-
- spin_lock(&u->lock);
-
- /* Check if the URB timed out */
- if (u->timeout && time_after_eq(jiffies,
- up->inserttime + u->timeout)) {
- list_del(&u->urb_list);
- list_add_tail(&u->urb_list, &list);
- }
-
- spin_unlock(&u->lock);
- }
- spin_unlock_irqrestore(&xhci->urb_list_lock, flags);
-
- head = &list;
- tmp = head->next;
- while (tmp != head) {
- struct urb *u = list_entry(tmp, struct urb, urb_list);
-
- tmp = tmp->next;
-
- u->transfer_flags |= USB_ASYNC_UNLINK | USB_TIMEOUT_KILLED;
- xhci_unlink_urb(u);
- }
-
- rh_init_int_timer(urb);
-}
-
-/* Root Hub INTs are polled by this timer */
-static int rh_init_int_timer(struct urb *urb)
-{
- xhci->rh.interval = urb->interval;
- init_timer(&xhci->rh.rh_int_timer);
- xhci->rh.rh_int_timer.function = rh_int_timer_do;
- xhci->rh.rh_int_timer.data = (unsigned long)urb;
- xhci->rh.rh_int_timer.expires = jiffies
- + (HZ * (urb->interval < 30 ? 30 : urb->interval)) / 1000;
- add_timer(&xhci->rh.rh_int_timer);
-
- return 0;
-}
-
-#define OK(x) len = (x); break
-
-/* Root Hub Control Pipe */
-static int rh_submit_urb(struct urb *urb)
-{
- unsigned int pipe = urb->pipe;
- struct usb_ctrlrequest *cmd =
- (struct usb_ctrlrequest *)urb->setup_packet;
- void *data = urb->transfer_buffer;
- int leni = urb->transfer_buffer_length;
- int len = 0;
- xhci_port_t *status;
- int stat = 0;
- int i;
- int retstatus;
- unsigned long flags;
-
- __u16 cstatus;
- __u16 bmRType_bReq;
- __u16 wValue;
- __u16 wIndex;
- __u16 wLength;
-
- if (usb_pipetype(pipe) == PIPE_INTERRUPT) {
- xhci->rh.urb = urb;
- xhci->rh.send = 1;
- xhci->rh.interval = urb->interval;
- rh_init_int_timer(urb);
-
- return -EINPROGRESS;
- }
-
- bmRType_bReq = cmd->bRequestType | cmd->bRequest << 8;
- wValue = le16_to_cpu(cmd->wValue);
- wIndex = le16_to_cpu(cmd->wIndex);
- wLength = le16_to_cpu(cmd->wLength);
-
- for (i = 0; i < 8; i++)
- xhci->rh.c_p_r[i] = 0;
-
- status = &xhci->rh.ports[wIndex - 1];
-
- spin_lock_irqsave(&xhci->rh.port_state_lock, flags);
-
- switch (bmRType_bReq) {
- /* Request Destination:
- without flags: Device,
- RH_INTERFACE: interface,
- RH_ENDPOINT: endpoint,
- RH_CLASS means HUB here,
- RH_OTHER | RH_CLASS almost ever means HUB_PORT here
- */
-
- case RH_GET_STATUS:
- *(__u16 *)data = cpu_to_le16(1);
- OK(2);
- case RH_GET_STATUS | RH_INTERFACE:
- *(__u16 *)data = cpu_to_le16(0);
- OK(2);
- case RH_GET_STATUS | RH_ENDPOINT:
- *(__u16 *)data = cpu_to_le16(0);
- OK(2);
- case RH_GET_STATUS | RH_CLASS:
- *(__u32 *)data = cpu_to_le32(0);
- OK(4); /* hub power */
- case RH_GET_STATUS | RH_OTHER | RH_CLASS:
- cstatus = (status->cs_chg) |
- (status->pe_chg << 1) |
- (xhci->rh.c_p_r[wIndex - 1] << 4);
- retstatus = (status->cs) |
- (status->pe << 1) |
- (status->susp << 2) |
- (1 << 8) | /* power on */
- (status->lsda << 9);
- *(__u16 *)data = cpu_to_le16(retstatus);
- *(__u16 *)(data + 2) = cpu_to_le16(cstatus);
- OK(4);
- case RH_CLEAR_FEATURE | RH_ENDPOINT:
- switch (wValue) {
- case RH_ENDPOINT_STALL:
- OK(0);
- }
- break;
- case RH_CLEAR_FEATURE | RH_CLASS:
- switch (wValue) {
- case RH_C_HUB_OVER_CURRENT:
- OK(0); /* hub power over current */
- }
- break;
- case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
- switch (wValue) {
- case RH_PORT_ENABLE:
- status->pe = 0;
- OK(0);
- case RH_PORT_SUSPEND:
- status->susp = 0;
- OK(0);
- case RH_PORT_POWER:
- OK(0); /* port power */
- case RH_C_PORT_CONNECTION:
- status->cs_chg = 0;
- OK(0);
- case RH_C_PORT_ENABLE:
- status->pe_chg = 0;
- OK(0);
- case RH_C_PORT_SUSPEND:
- /*** WR_RH_PORTSTAT(RH_PS_PSSC); */
- OK(0);
- case RH_C_PORT_OVER_CURRENT:
- OK(0); /* port power over current */
- case RH_C_PORT_RESET:
- xhci->rh.c_p_r[wIndex - 1] = 0;
- OK(0);
- }
- break;
- case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
- switch (wValue) {
- case RH_PORT_SUSPEND:
- status->susp = 1;
- OK(0);
- case RH_PORT_RESET:
- {
- int ret;
- xhci->rh.c_p_r[wIndex - 1] = 1;
- status->pr = 0;
- status->pe = 1;
- ret = xhci_port_reset(wIndex - 1);
- /* XXX MAW: should probably cancel queued transfers
during reset... *\/ */
- if ( ret == 0 ) { OK(0); }
- else { return ret; }
- }
- break;
- case RH_PORT_POWER:
- OK(0); /* port power ** */
- case RH_PORT_ENABLE:
- status->pe = 1;
- OK(0);
- }
- break;
- case RH_SET_ADDRESS:
- xhci->rh.devnum = wValue;
- OK(0);
- case RH_GET_DESCRIPTOR:
- switch ((wValue & 0xff00) >> 8) {
- case 0x01: /* device descriptor */
- len = min_t(unsigned int, leni,
- min_t(unsigned int,
- sizeof(root_hub_dev_des), wLength));
- memcpy(data, root_hub_dev_des, len);
- OK(len);
- case 0x02: /* configuration descriptor */
- len = min_t(unsigned int, leni,
- min_t(unsigned int,
- sizeof(root_hub_config_des), wLength));
- memcpy (data, root_hub_config_des, len);
- OK(len);
- case 0x03: /* string descriptors */
- len = usb_root_hub_string (wValue & 0xff,
- 0, "XHCI-alt",
- data, wLength);
- if (len > 0) {
- OK(min_t(int, leni, len));
- } else
- stat = -EPIPE;
- }
- break;
- case RH_GET_DESCRIPTOR | RH_CLASS:
- root_hub_hub_des[2] = xhci->rh.numports;
- len = min_t(unsigned int, leni,
- min_t(unsigned int, sizeof(root_hub_hub_des),
wLength));
- memcpy(data, root_hub_hub_des, len);
- OK(len);
- case RH_GET_CONFIGURATION:
- *(__u8 *)data = 0x01;
- OK(1);
- case RH_SET_CONFIGURATION:
- OK(0);
- case RH_GET_INTERFACE | RH_INTERFACE:
- *(__u8 *)data = 0x00;
- OK(1);
- case RH_SET_INTERFACE | RH_INTERFACE:
- OK(0);
- default:
- stat = -EPIPE;
- }
-
- spin_unlock_irqrestore(&xhci->rh.port_state_lock, flags);
-
- urb->actual_length = len;
-
- return stat;
-}
-
-/*
- * MUST be called with urb->lock acquired
- */
-static int rh_unlink_urb(struct urb *urb)
-{
- if (xhci->rh.urb == urb) {
- urb->status = -ENOENT;
- xhci->rh.send = 0;
- xhci->rh.urb = NULL;
- del_timer(&xhci->rh.rh_int_timer);
- }
- return 0;
-}
-
-/******************************************************************************
- * CONTROL PLANE FUNCTIONALITY
- */
-
-/**
- * alloc_xhci - initialise a new virtual root hub for a new USB device channel
- */
-static int alloc_xhci(void)
-{
- int retval;
- struct usb_bus *bus;
-
- retval = -EBUSY;
-
- xhci = kmalloc(sizeof(*xhci), GFP_KERNEL);
- if (!xhci) {
- err("couldn't allocate xhci structure");
- retval = -ENOMEM;
- goto err_alloc_xhci;
- }
-
- xhci->state = USBIF_STATE_CLOSED;
-
- spin_lock_init(&xhci->urb_list_lock);
- INIT_LIST_HEAD(&xhci->urb_list);
-
- spin_lock_init(&xhci->complete_list_lock);
- INIT_LIST_HEAD(&xhci->complete_list);
-
- spin_lock_init(&xhci->frame_list_lock);
-
- bus = usb_alloc_bus(&xhci_device_operations);
-
- if (!bus) {
- err("unable to allocate bus");
- goto err_alloc_bus;
- }
-
- xhci->bus = bus;
- bus->bus_name = "XHCI";
- bus->hcpriv = xhci;
-
- usb_register_bus(xhci->bus);
-
- /* Initialize the root hub */
-
- xhci->rh.numports = 0;
-
- xhci->bus->root_hub = xhci->rh.dev = usb_alloc_dev(NULL, xhci->bus);
- if (!xhci->rh.dev) {
- err("unable to allocate root hub");
- goto err_alloc_root_hub;
- }
-
- xhci->state = 0;
-
- return 0;
-
-/*
- * error exits:
- */
-err_alloc_root_hub:
- usb_deregister_bus(xhci->bus);
- usb_free_bus(xhci->bus);
- xhci->bus = NULL;
-
-err_alloc_bus:
- kfree(xhci);
-
-err_alloc_xhci:
- return retval;
-}
-
-/**
- * usbif_status_change - deal with an incoming USB_INTERFACE_STATUS_ message
- */
-static void usbif_status_change(usbif_fe_interface_status_changed_t *status)
-{
- ctrl_msg_t cmsg;
- usbif_fe_interface_connect_t up;
- long rc;
- usbif_sring_t *sring;
-
- switch ( status->status )
- {
- case USBIF_INTERFACE_STATUS_DESTROYED:
- printk(KERN_WARNING "Unexpected usbif-DESTROYED message in state %d\n",
- xhci->state);
- break;
-
- case USBIF_INTERFACE_STATUS_DISCONNECTED:
- if ( xhci->state != USBIF_STATE_CLOSED )
- {
- printk(KERN_WARNING "Unexpected usbif-DISCONNECTED message"
- " in state %d\n", xhci->state);
- break;
- /* Not bothering to do recovery here for now. Keep things
- * simple. */
-
- spin_lock_irq(&xhci->ring_lock);
-
- /* Clean up resources. */
- free_page((unsigned long)xhci->usb_ring.sring);
- free_irq(xhci->irq, xhci);
- unbind_evtchn_from_irq(xhci->evtchn);
-
- /* Plug the ring. */
- xhci->recovery = 1;
- wmb();
-
- spin_unlock_irq(&xhci->ring_lock);
- }
-
- /* Move from CLOSED to DISCONNECTED state. */
- sring = (usbif_sring_t *)__get_free_page(GFP_KERNEL);
- SHARED_RING_INIT(sring);
- FRONT_RING_INIT(&xhci->usb_ring, sring, PAGE_SIZE);
- xhci->state = USBIF_STATE_DISCONNECTED;
-
- /* Construct an interface-CONNECT message for the domain controller. */
- cmsg.type = CMSG_USBIF_FE;
- cmsg.subtype = CMSG_USBIF_FE_INTERFACE_CONNECT;
- cmsg.length = sizeof(usbif_fe_interface_connect_t);
- up.shmem_frame = virt_to_machine(sring) >> PAGE_SHIFT;
- memcpy(cmsg.msg, &up, sizeof(up));
-
- /* Tell the controller to bring up the interface. */
- ctrl_if_send_message_block(&cmsg, NULL, 0, TASK_UNINTERRUPTIBLE);
- break;
-
- case USBIF_INTERFACE_STATUS_CONNECTED:
- if ( xhci->state == USBIF_STATE_CLOSED )
- {
- printk(KERN_WARNING "Unexpected usbif-CONNECTED message"
- " in state %d\n", xhci->state);
- break;
- }
-
- xhci->evtchn = status->evtchn;
- xhci->irq = bind_evtchn_to_irq(xhci->evtchn);
- xhci->bandwidth = status->bandwidth;
- xhci->rh.numports = status->num_ports;
-
- xhci->rh.ports = kmalloc (sizeof(xhci_port_t) * xhci->rh.numports,
GFP_KERNEL);
-
- if ( xhci->rh.ports == NULL )
- goto alloc_ports_nomem;
-
- memset(xhci->rh.ports, 0, sizeof(xhci_port_t) * xhci->rh.numports);
-
- usb_connect(xhci->rh.dev);
-
- if (usb_new_device(xhci->rh.dev) != 0) {
- err("unable to start root hub");
- }
-
- /* Allocate the appropriate USB bandwidth here... Need to
- * somehow know what the total available is thought to be so we
- * can calculate the reservation correctly. */
- usb_claim_bandwidth(xhci->rh.dev, xhci->rh.urb,
- 1000 - xhci->bandwidth, 0);
-
- if ( (rc = request_irq(xhci->irq, xhci_interrupt,
- SA_SAMPLE_RANDOM, "usbif", xhci)) )
- printk(KERN_ALERT"usbfront request_irq failed (%ld)\n",rc);
-
- DPRINTK(KERN_INFO __FILE__
- ": USB XHCI: SHM at %p (0x%lx), EVTCHN %d IRQ %d\n",
- xhci->usb_ring.sring, virt_to_machine(xhci->usbif),
- xhci->evtchn, xhci->irq);
-
- xhci->state = USBIF_STATE_CONNECTED;
-
- break;
-
- default:
- printk(KERN_WARNING "Status change to unknown value %d\n",
- status->status);
- break;
- }
-
- return;
-
- alloc_ports_nomem:
- printk(KERN_WARNING "Failed to allocate port memory, XHCI failed to
connect.\n");
- return;
-}
-
-/**
- * usbif_ctrlif_rx - demux control messages by subtype
- */
-static void usbif_ctrlif_rx(ctrl_msg_t *msg, unsigned long id)
-{
- switch ( msg->subtype )
- {
- case CMSG_USBIF_FE_INTERFACE_STATUS_CHANGED:
- usbif_status_change((usbif_fe_interface_status_changed_t *)
- &msg->msg[0]);
- break;
-
- /* New interface...? */
- default:
- msg->length = 0;
- break;
- }
-
- ctrl_if_send_response(msg);
-}
-
-static void send_driver_up(void)
-{
- control_msg_t cmsg;
- usbif_fe_interface_status_changed_t st;
-
- /* Send a driver-UP notification to the domain controller. */
- cmsg.type = CMSG_USBIF_FE;
- cmsg.subtype = CMSG_USBIF_FE_DRIVER_STATUS_CHANGED;
- cmsg.length = sizeof(usbif_fe_driver_status_changed_t);
- st.status = USBIF_DRIVER_STATUS_UP;
- memcpy(cmsg.msg, &st, sizeof(st));
- ctrl_if_send_message_block(&cmsg, NULL, 0, TASK_UNINTERRUPTIBLE);
-}
-
-void usbif_resume(void)
-{
- int i;
-
- /* Fake disconnection on all virtual USB ports (suspending / migrating
- * will destroy hard state associated will the USB devices anyhow). */
- /* No need to lock here. */
- for ( i = 0; i < xhci->rh.numports; i++ )
- {
- xhci->rh.ports[i].cs = 0;
- xhci->rh.ports[i].cs_chg = 1;
- xhci->rh.ports[i].pe = 0;
- }
-
- send_driver_up();
-}
-
-static int __init xhci_hcd_init(void)
-{
- int retval = -ENOMEM, i;
-
- if ( (xen_start_info.flags & SIF_INITDOMAIN)
- || (xen_start_info.flags & SIF_USB_BE_DOMAIN) )
- return 0;
-
- info(DRIVER_DESC " " DRIVER_VERSION);
-
- if (debug) {
- errbuf = kmalloc(ERRBUF_LEN, GFP_KERNEL);
- if (!errbuf)
- goto errbuf_failed;
- }
-
- xhci_up_cachep = kmem_cache_create("xhci_urb_priv",
- sizeof(struct urb_priv), 0, 0, NULL, NULL);
- if (!xhci_up_cachep)
- goto up_failed;
-
- /* Let the domain controller know we're here. For now we wait until
- * connection, as for the block and net drivers. This is only strictly
- * necessary if we're going to boot off a USB device. */
- printk(KERN_INFO "Initialising Xen virtual USB hub\n");
-
- (void)ctrl_if_register_receiver(CMSG_USBIF_FE, usbif_ctrlif_rx,
- CALLBACK_IN_BLOCKING_CONTEXT);
-
- alloc_xhci();
-
- send_driver_up();
-
- /*
- * We should read 'nr_interfaces' from response message and wait
- * for notifications before proceeding. For now we assume that we
- * will be notified of exactly one interface.
- */
- for ( i=0; (xhci->state != USBIF_STATE_CONNECTED) && (i < 10*HZ); i++ )
- {
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(1);
- }
-
- if (xhci->state != USBIF_STATE_CONNECTED)
- printk(KERN_WARNING "Timeout connecting USB frontend driver!\n");
-
- return 0;
-
-up_failed:
- if (errbuf)
- kfree(errbuf);
-
-errbuf_failed:
- return retval;
-}
-
-module_init(xhci_hcd_init);
-
-MODULE_AUTHOR(DRIVER_AUTHOR);
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_LICENSE("GPL");
-
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/usbfront/xhci.h
--- a/linux-2.6.11-xen-sparse/drivers/xen/usbfront/xhci.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,183 +0,0 @@
-/******************************************************************************
- * xhci.h
- *
- * Private definitions for the Xen Virtual USB Controller. Based on
- * drivers/usb/host/uhci.h from Linux. Copyright for the imported content is
- * retained by the original authors.
- *
- * Modifications are:
- * Copyright (C) 2004 Intel Research Cambridge
- * Copyright (C) 2004, 2005 Mark Williamson
- */
-
-#ifndef __LINUX_XHCI_H
-#define __LINUX_XHCI_H
-
-#include <linux/list.h>
-#include <linux/usb.h>
-#include <asm-xen/xen-public/io/usbif.h>
-#include <linux/spinlock.h>
-
-/* xhci_port_t - current known state of a virtual hub ports */
-typedef struct {
- unsigned int cs :1; /* Connection status. */
- unsigned int cs_chg :1; /* Connection status change. */
- unsigned int pe :1; /* Port enable. */
- unsigned int pe_chg :1; /* Port enable change. */
- unsigned int susp :1; /* Suspended. */
- unsigned int lsda :1; /* Low speed device attached. */
- unsigned int pr :1; /* Port reset. */
-} xhci_port_t;
-
-/* struct virt_root_hub - state related to the virtual root hub */
-struct virt_root_hub {
- struct usb_device *dev;
- int devnum; /* Address of Root Hub endpoint */
- struct urb *urb;
- void *int_addr;
- int send;
- int interval;
- int numports;
- int c_p_r[8];
- struct timer_list rh_int_timer;
- spinlock_t port_state_lock;
- xhci_port_t *ports;
-};
-
-/* struct xhci - contains the state associated with a single USB interface */
-struct xhci {
-
-#ifdef CONFIG_PROC_FS
- /* procfs */
- int num;
- struct proc_dir_entry *proc_entry;
-#endif
-
- int evtchn; /* Interdom channel to backend */
- int irq; /* Bound to evtchn */
- enum {
- USBIF_STATE_CONNECTED = 2,
- USBIF_STATE_DISCONNECTED = 1,
- USBIF_STATE_CLOSED = 0
- } state; /* State of this USB interface */
- unsigned long recovery; /* boolean recovery in progress flag */
-
- unsigned long bandwidth;
-
- struct usb_bus *bus;
-
- /* Main list of URB's currently controlled by this HC */
- spinlock_t urb_list_lock;
- struct list_head urb_list; /* P: xhci->urb_list_lock */
-
- /* List of URB's awaiting completion callback */
- spinlock_t complete_list_lock;
- struct list_head complete_list; /* P: xhci->complete_list_lock
*/
-
- struct virt_root_hub rh; /* private data of the virtual root hub
*/
-
- spinlock_t ring_lock;
- usbif_front_ring_t usb_ring;
-
- int awaiting_reset;
-};
-
-/* per-URB private data structure for the host controller */
-struct urb_priv {
- struct urb *urb;
- usbif_iso_t *schedule;
- struct usb_device *dev;
-
- int in_progress : 1; /* QH was queued (not linked in) */
- int short_control_packet : 1; /* If we get a short packet during */
- /* a control transfer, retrigger */
- /* the status phase */
-
- int status; /* Final status */
-
- unsigned long inserttime; /* In jiffies */
-
- struct list_head complete_list; /* P: xhci->complete_list_lock */
-};
-
-/*
- * Locking in xhci.c
- *
- * spinlocks are used extensively to protect the many lists and data
- * structures we have. It's not that pretty, but it's necessary. We
- * need to be done with all of the locks (except complete_list_lock) when
- * we call urb->complete. I've tried to make it simple enough so I don't
- * have to spend hours racking my brain trying to figure out if the
- * locking is safe.
- *
- * Here's the safe locking order to prevent deadlocks:
- *
- * #1 xhci->urb_list_lock
- * #2 urb->lock
- * #3 xhci->urb_remove_list_lock
- * #4 xhci->complete_list_lock
- *
- * If you're going to grab 2 or more locks at once, ALWAYS grab the lock
- * at the lowest level FIRST and NEVER grab locks at the same level at the
- * same time.
- *
- * So, if you need xhci->urb_list_lock, grab it before you grab urb->lock
- */
-
-/* -------------------------------------------------------------------------
- Virtual Root HUB
- ------------------------------------------------------------------------- */
-/* destination of request */
-#define RH_DEVICE 0x00
-#define RH_INTERFACE 0x01
-#define RH_ENDPOINT 0x02
-#define RH_OTHER 0x03
-
-#define RH_CLASS 0x20
-#define RH_VENDOR 0x40
-
-/* Requests: bRequest << 8 | bmRequestType */
-#define RH_GET_STATUS 0x0080
-#define RH_CLEAR_FEATURE 0x0100
-#define RH_SET_FEATURE 0x0300
-#define RH_SET_ADDRESS 0x0500
-#define RH_GET_DESCRIPTOR 0x0680
-#define RH_SET_DESCRIPTOR 0x0700
-#define RH_GET_CONFIGURATION 0x0880
-#define RH_SET_CONFIGURATION 0x0900
-#define RH_GET_STATE 0x0280
-#define RH_GET_INTERFACE 0x0A80
-#define RH_SET_INTERFACE 0x0B00
-#define RH_SYNC_FRAME 0x0C80
-/* Our Vendor Specific Request */
-#define RH_SET_EP 0x2000
-
-/* Hub port features */
-#define RH_PORT_CONNECTION 0x00
-#define RH_PORT_ENABLE 0x01
-#define RH_PORT_SUSPEND 0x02
-#define RH_PORT_OVER_CURRENT 0x03
-#define RH_PORT_RESET 0x04
-#define RH_PORT_POWER 0x08
-#define RH_PORT_LOW_SPEED 0x09
-#define RH_C_PORT_CONNECTION 0x10
-#define RH_C_PORT_ENABLE 0x11
-#define RH_C_PORT_SUSPEND 0x12
-#define RH_C_PORT_OVER_CURRENT 0x13
-#define RH_C_PORT_RESET 0x14
-
-/* Hub features */
-#define RH_C_HUB_LOCAL_POWER 0x00
-#define RH_C_HUB_OVER_CURRENT 0x01
-#define RH_DEVICE_REMOTE_WAKEUP 0x00
-#define RH_ENDPOINT_STALL 0x01
-
-/* Our Vendor Specific feature */
-#define RH_REMOVE_EP 0x00
-
-#define RH_ACK 0x01
-#define RH_REQ_ERR -1
-#define RH_NACK 0x00
-
-#endif
-
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/xenbus/Makefile
--- a/linux-2.6.11-xen-sparse/drivers/xen/xenbus/Makefile Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,10 +0,0 @@
-obj-y += xenbus.o
-
-xenbus-objs =
-xenbus-objs += xenbus_comms.o
-xenbus-objs += xenbus_xs.o
-xenbus-objs += xenbus_probe.o
-
-XEN_TOOLS_DIR := "../tools"
-vpath %.h $(XEN_TOOLS_DIR)
-EXTRA_CFLAGS += -I $(XEN_TOOLS_DIR)
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/xenbus/xenbus_comms.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/xenbus/xenbus_comms.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,208 +0,0 @@
-/******************************************************************************
- * xenbus_comms.c
- *
- * Low level code to talks to Xen Store: ringbuffer and event channel.
- *
- * Copyright (C) 2005 Rusty Russell, IBM Corporation
- *
- * This file may be distributed separately from the Linux kernel, or
- * incorporated into other software packages, subject to the following license:
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this source file (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use, copy, modify,
- * merge, publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-//#define DEBUG
-
-#include <asm-xen/hypervisor.h>
-#include <asm-xen/evtchn.h>
-#include <linux/wait.h>
-#include <linux/interrupt.h>
-#include <linux/sched.h>
-#include <linux/err.h>
-#include "xenbus_comms.h"
-
-#define RINGBUF_DATASIZE ((PAGE_SIZE / 2) - sizeof(struct ringbuf_head))
-struct ringbuf_head
-{
- u32 write; /* Next place to write to */
- u32 read; /* Next place to read from */
- u8 flags;
- char buf[0];
-} __attribute__((packed));
-
-DECLARE_WAIT_QUEUE_HEAD(xb_waitq);
-
-static irqreturn_t wake_waiting(int irq, void *unused, struct pt_regs *regs)
-{
- wake_up(&xb_waitq);
- return IRQ_HANDLED;
-}
-
-static int check_buffer(const struct ringbuf_head *h)
-{
- return (h->write < RINGBUF_DATASIZE && h->read < RINGBUF_DATASIZE);
-}
-
-/* We can't fill last byte: would look like empty buffer. */
-static void *get_output_chunk(const struct ringbuf_head *h,
- void *buf, u32 *len)
-{
- u32 read_mark;
-
- if (h->read == 0)
- read_mark = RINGBUF_DATASIZE - 1;
- else
- read_mark = h->read - 1;
-
- /* Here to the end of buffer, unless they haven't read some out. */
- *len = RINGBUF_DATASIZE - h->write;
- if (read_mark >= h->write)
- *len = read_mark - h->write;
- return buf + h->write;
-}
-
-static const void *get_input_chunk(const struct ringbuf_head *h,
- const void *buf, u32 *len)
-{
- /* Here to the end of buffer, unless they haven't written some. */
- *len = RINGBUF_DATASIZE - h->read;
- if (h->write >= h->read)
- *len = h->write - h->read;
- return buf + h->read;
-}
-
-static void update_output_chunk(struct ringbuf_head *h, u32 len)
-{
- h->write += len;
- if (h->write == RINGBUF_DATASIZE)
- h->write = 0;
-}
-
-static void update_input_chunk(struct ringbuf_head *h, u32 len)
-{
- h->read += len;
- if (h->read == RINGBUF_DATASIZE)
- h->read = 0;
-}
-
-static int output_avail(struct ringbuf_head *out)
-{
- unsigned int avail;
-
- get_output_chunk(out, out->buf, &avail);
- return avail != 0;
-}
-
-int xb_write(struct ringbuf_head *out, const void *data, unsigned len)
-{
- struct ringbuf_head h;
-
- do {
- void *dst;
- unsigned int avail;
-
- wait_event(xb_waitq, output_avail(out));
-
- /* Read, then check: not that we don't trust store.
- * Hell, some of my best friends are daemons. But,
- * in this post-911 world... */
- h = *out;
- mb();
- if (!check_buffer(&h)) {
- set_current_state(TASK_RUNNING);
- return -EIO; /* ETERRORIST! */
- }
-
- dst = get_output_chunk(&h, out->buf, &avail);
- if (avail > len)
- avail = len;
- memcpy(dst, data, avail);
- data += avail;
- len -= avail;
- update_output_chunk(out, avail);
- notify_via_evtchn(xen_start_info.store_evtchn);
- } while (len != 0);
-
- return 0;
-}
-
-int xs_input_avail(struct ringbuf_head *in)
-{
- unsigned int avail;
-
- get_input_chunk(in, in->buf, &avail);
- return avail != 0;
-}
-
-int xb_read(struct ringbuf_head *in, void *data, unsigned len)
-{
- struct ringbuf_head h;
- int was_full;
-
- while (len != 0) {
- unsigned int avail;
- const char *src;
-
- wait_event(xb_waitq, xs_input_avail(in));
- h = *in;
- mb();
- if (!check_buffer(&h)) {
- set_current_state(TASK_RUNNING);
- return -EIO;
- }
-
- src = get_input_chunk(&h, in->buf, &avail);
- if (avail > len)
- avail = len;
- was_full = !output_avail(&h);
-
- memcpy(data, src, avail);
- data += avail;
- len -= avail;
- update_input_chunk(in, avail);
- pr_debug("Finished read of %i bytes (%i to go)\n", avail, len);
- /* If it was full, tell them we've taken some. */
- if (was_full)
- notify_via_evtchn(xen_start_info.store_evtchn);
- }
-
- /* If we left something, wake watch thread to deal with it. */
- if (xs_input_avail(in))
- wake_up(&xb_waitq);
-
- return 0;
-}
-
-/* Set up interrpt handler off store event channel. */
-int xb_init_comms(void **in, void **out)
-{
- int err, irq;
-
- irq = bind_evtchn_to_irq(xen_start_info.store_evtchn);
-
- err = request_irq(irq, wake_waiting, SA_SHIRQ, "xenbus", &xb_waitq);
- if (err) {
- printk(KERN_ERR "XENBUS request irq failed %i\n", err);
- unbind_evtchn_from_irq(xen_start_info.store_evtchn);
- return err;
- }
-
- *out = (void *)xen_start_info.store_page;
- *in = (void *)xen_start_info.store_page + PAGE_SIZE/2;
- return 0;
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/xenbus/xenbus_comms.h
--- a/linux-2.6.11-xen-sparse/drivers/xen/xenbus/xenbus_comms.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,14 +0,0 @@
-/* Private include for xenbus communications. */
-#ifndef _XENBUS_COMMS_H
-#define _XENBUS_COMMS_H
-int xs_init(void);
-int xb_init_comms(void **in, void **out);
-
-/* Low level routines. */
-struct ringbuf_head;
-int xb_write(struct ringbuf_head *out, const void *data, unsigned len);
-int xb_read(struct ringbuf_head *in, void *data, unsigned len);
-int xs_input_avail(struct ringbuf_head *in);
-extern wait_queue_head_t xb_waitq;
-
-#endif /* _XENBUS_COMMS_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/xenbus/xenbus_probe.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/xenbus/xenbus_probe.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,858 +0,0 @@
-/******************************************************************************
- * Talks to Xen Store to figure out what devices we have.
- * Currently experiment code, but when I grow up I'll be a bus driver!
- *
- * Copyright (C) 2005 Rusty Russell, IBM Corporation
- * Copyright (C) 2005 Mike Wray, Hewlett-Packard
- *
- * This file may be distributed separately from the Linux kernel, or
- * incorporated into other software packages, subject to the following license:
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this source file (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use, copy, modify,
- * merge, publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-#include <asm-xen/hypervisor.h>
-#include <asm-xen/xenbus.h>
-#include <linux/kernel.h>
-#include <linux/err.h>
-#include <linux/string.h>
-#include <linux/ctype.h>
-#include <linux/fcntl.h>
-#include <stdarg.h>
-#include "xenbus_comms.h"
-
-/* Directory inside a domain containing devices. */
-#define XENBUS_DEVICE_DIR "device"
-
-/* Directory inside a domain containing backends. */
-#define XENBUS_BACKEND_DIR "backend"
-
-/* Name of field containing device id. */
-#define XENBUS_DEVICE_ID "id"
-
-/* Name of field containing device type. */
-#define XENBUS_DEVICE_TYPE "type"
-
-//#define DEBUG
-
-#ifdef DEBUG
-#define dprintf(_fmt, _args...) \
-printk(KERN_INFO __stringify(KBUILD_MODNAME) " [DBG] %s" _fmt,
__FUNCTION__, ##_args)
-#else
-#define dprintf(_fmt, _args...) do { } while(0)
-#endif
-
-static int xs_init_done = 0;
-
-/* Return the path to dir with /name appended.
- * If name is null or empty returns a copy of dir.
- */
-char *xenbus_path(const char *dir, const char *name)
-{
- char *ret;
- int len;
-
- len = strlen(dir) + 1;
- if (name)
- len += strlen(name) + 1;
- ret = kmalloc(len, GFP_KERNEL);
- if (ret == NULL)
- return NULL;
- strcpy(ret, dir);
- if (name) {
- strcat(ret, "/");
- strcat(ret, name);
- }
- return ret;
-}
-
-#define streq(a, b) (strcmp((a), (b)) == 0)
-
-char *xenbus_read(const char *dir, const char *name, unsigned int *data_n)
-{
- int err = 0;
- char *data = NULL;
- char *path = xenbus_path(dir, name);
- int n = 0;
-
- if (!path) {
- err = -ENOMEM;
- goto out;
- }
- data = xs_read(path, &n);
- if (IS_ERR(data)) {
- err = PTR_ERR(data);
- if (err == -EISDIR)
- err = -ENOENT;
- } else if (n == 0) {
- err = -ENOENT;
- kfree(data);
- }
- kfree(path);
- out:
- if (data_n)
- *data_n = n;
- return (err ? ERR_PTR(err) : data);
-}
-
-int xenbus_write(const char *dir, const char *name, const char *data, int
data_n)
-{
- int err = 0;
- char *path = xenbus_path(dir, name);
-
- if (!path)
- return -ENOMEM;
- err = xs_write(path, data, data_n, O_CREAT);
- kfree(path);
- return err;
-}
-
-int xenbus_read_string(const char *dir, const char *name, char **val)
-{
- int err = 0;
-
- *val = xenbus_read(dir, name, NULL);
- if (IS_ERR(*val)) {
- err = PTR_ERR(*val);
- *val = NULL;
- }
- return err;
-}
-
-int xenbus_write_string(const char *dir, const char *name, const char *val)
-{
- return xenbus_write(dir, name, val, strlen(val));
-}
-
-int xenbus_read_ulong(const char *dir, const char *name, unsigned long *val)
-{
- int err = 0;
- char *data = NULL, *end = NULL;
- unsigned int data_n = 0;
-
- data = xenbus_read(dir, name, &data_n);
- if (IS_ERR(data)) {
- err = PTR_ERR(data);
- goto out;
- }
- if (data_n <= 1) {
- err = -ENOENT;
- goto free_data;
- }
- *val = simple_strtoul(data, &end, 10);
- if (end != data + data_n) {
- printk("XENBUS: Path %s/%s, bad parse of '%s' as ulong\n",
- dir, name, data);
- err = -EINVAL;
- }
- free_data:
- kfree(data);
- out:
- if (err)
- *val = 0;
- return err;
-}
-
-int xenbus_write_ulong(const char *dir, const char *name, unsigned long val)
-{
- char data[32] = {};
-
- snprintf(data, sizeof(data), "%lu", val);
- return xenbus_write(dir, name, data, strlen(data));
-}
-
-int xenbus_read_long(const char *dir, const char *name, long *val)
-{
- int err = 0;
- char *data = NULL, *end = NULL;
- unsigned int data_n = 0;
-
- data = xenbus_read(dir, name, &data_n);
- if (IS_ERR(data)) {
- err = PTR_ERR(data);
- goto out;
- }
- if (data_n <= 1) {
- err = -ENOENT;
- goto free_data;
- }
- *val = simple_strtol(data, &end, 10);
- if (end != data + data_n) {
- printk("XENBUS: Path %s/%s, bad parse of '%s' as long\n",
- dir, name, data);
- err = -EINVAL;
- }
- free_data:
- kfree(data);
- out:
- if (err)
- *val = 0;
- return err;
-}
-
-int xenbus_write_long(const char *dir, const char *name, long val)
-{
- char data[32] = {};
-
- snprintf(data, sizeof(data), "%li", val);
- return xenbus_write(dir, name, data, strlen(data));
-}
-
-/* Number of characters in string form of a MAC address. */
-#define MAC_LENGTH 17
-
-/** Convert a mac address from a string of the form
- * XX:XX:XX:XX:XX:XX to numerical form (an array of 6 unsigned chars).
- * Each X denotes a hex digit: 0..9, a..f, A..F.
- * Also supports using '-' as the separator instead of ':'.
- */
-static int mac_aton(const char *macstr, unsigned int n, unsigned char mac[6])
-{
- int err = -EINVAL;
- int i, j;
- const char *p;
- char sep = 0;
-
- if (!macstr || n != MAC_LENGTH)
- goto exit;
- for (i = 0, p = macstr; i < 6; i++) {
- unsigned char d = 0;
- if (i) {
- if (!sep && (*p == ':' || *p == '-'))
- sep = *p;
- if (sep && *p == sep)
- p++;
- else
- goto exit;
- }
- for (j = 0; j < 2; j++, p++) {
- if (j)
- d <<= 4;
- if (isdigit(*p))
- d += *p - '0';
- else if (isxdigit(*p))
- d += toupper(*p) - 'A' + 10;
- else
- goto exit;
- }
- mac[i] = d;
- }
- err = 0;
- exit:
- return err;
-}
-
-int xenbus_read_mac(const char *dir, const char *name, unsigned char mac[6])
-{
- int err = 0;
- char *data = 0;
- unsigned int data_n = 0;
-
- data = xenbus_read(dir, name, &data_n);
- if (IS_ERR(data)) {
- err = PTR_ERR(data);
- goto out;
- }
- if (data_n <= 1) {
- err = -ENOENT;
- goto free_data;
- }
- err = mac_aton(data, data_n, mac);
- if (err) {
- printk("XENBUS: Path %s/%s, bad parse of '%s' as mac\n",
- dir, name, data);
- err = -EINVAL;
- }
- free_data:
- kfree(data);
- out:
- if (err)
- memset(mac, 0, sizeof(mac));
- return err;
-}
-
-int xenbus_write_mac(const char *dir, const char *name, const unsigned char
mac[6])
-{
- char buf[MAC_LENGTH] = {};
- int buf_n = sizeof(buf);
-
- snprintf(buf, buf_n, "%02x:%02x:%02x:%02x:%02x:%02x",
- mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
- return xenbus_write(dir, name, buf, buf_n);
-}
-
-/* Read event channel information from xenstore.
- *
- * Event channel xenstore fields:
- * dom1 - backend domain id (int)
- * port1 - backend port (int)
- * dom2 - frontend domain id (int)
- * port2 - frontend port (int)
- */
-int xenbus_read_evtchn(const char *dir, const char *name, struct xenbus_evtchn
*evtchn)
-{
- int err = 0;
- char *evtchn_path = xenbus_path(dir, name);
-
- if (!evtchn_path) {
- err = -ENOMEM;
- goto out;
- }
- err = xenbus_read_ulong(evtchn_path, "dom1", &evtchn->dom1);
- if (err)
- goto free_evtchn_path;
- err = xenbus_read_ulong(evtchn_path, "port1", &evtchn->port1);
- if (err)
- goto free_evtchn_path;
- err = xenbus_read_ulong(evtchn_path, "dom2", &evtchn->dom2);
- if (err)
- goto free_evtchn_path;
- err = xenbus_read_ulong(evtchn_path, "port2", &evtchn->port2);
-
- free_evtchn_path:
- kfree(evtchn_path);
- out:
- if (err)
- *evtchn = (struct xenbus_evtchn){};
- return err;
-}
-
-/* Write a message to 'dir'.
- * The data is 'val' followed by parameter names and values,
- * terminated by NULL.
- */
-int xenbus_message(const char *dir, const char *val, ...)
-{
- static const char *mid_name = "@mid";
- va_list args;
- int err = 0;
- char *mid_path = NULL;
- char *msg_path = NULL;
- char mid_str[32] = {};
- long mid = 0;
- int i;
-
- va_start(args, val);
- mid_path = xenbus_path(dir, mid_name);
- if (!mid_path) {
- err = -ENOMEM;
- goto out;
- }
- err = xenbus_read_long(dir, mid_name, &mid);
- if (err != -ENOENT)
- goto out;
- mid++;
- err = xenbus_write_long(dir, mid_name, mid);
- if (err)
- goto out;
- sprintf(mid_str, "%li", mid);
- msg_path = xenbus_path(dir, mid_str);
- if (!mid_path) {
- err = -ENOMEM;
- goto out;
- }
-
- for (i = 0; i < 16; i++) {
- char *k, *v;
- k = va_arg(args, char *);
- if (!k)
- break;
- v = va_arg(args, char *);
- if (!v)
- break;
- err = xenbus_write_string(msg_path, k, v);
- if (err)
- goto out;
- }
- err = xenbus_write_string(msg_path, NULL, val);
-
- out:
- kfree(msg_path);
- kfree(mid_path);
- va_end(args);
- return err;
-}
-
-/* If something in array of ids matches this device, return it. */
-static const struct xenbus_device_id *
-match_device(const struct xenbus_device_id *arr, struct xenbus_device *dev)
-{
- for (; !streq(arr->devicetype, ""); arr++) {
- if (!streq(arr->devicetype, dev->devicetype))
- continue;
-
- if (streq(arr->subtype, "") ||
- streq(arr->subtype, dev->subtype)) {
- return arr;
- }
- }
- return NULL;
-}
-
-static int xenbus_match(struct device *_dev, struct device_driver *_drv)
-{
- struct xenbus_driver *drv = to_xenbus_driver(_drv);
-
- if (!drv->ids)
- return 0;
-
- return match_device(drv->ids, to_xenbus_device(_dev)) != NULL;
-}
-
-/* Bus type for frontend drivers. */
-static struct bus_type xenbus_type = {
- .name = "xenbus",
- .match = xenbus_match,
-};
-
-
-/* Bus type for backend drivers. */
-static struct bus_type xenback_type = {
- .name = "xenback",
- .match = xenbus_match,
-};
-
-struct xenbus_for_dev {
- int (*fn)(struct xenbus_device *, void *);
- void *data;
-};
-
-static int for_dev(struct device *_dev, void *_data)
-{
- struct xenbus_device *dev = to_xenbus_device(_dev);
- struct xenbus_for_dev *data = _data;
- dev = to_xenbus_device(_dev);
- return data->fn(dev, data->data);
-}
-
-int xenbus_for_each_dev(struct xenbus_device * start, void * data,
- int (*fn)(struct xenbus_device *, void *))
-{
- struct xenbus_for_dev for_data = {
- .fn = fn,
- .data = data,
- };
- if (!fn)
- return -EINVAL;
- printk("%s> data=%p fn=%p for_data=%p\n", __FUNCTION__,
- data, fn, &for_data);
- return bus_for_each_dev(&xenbus_type,
- (start ? &start->dev : NULL),
- &for_data, for_dev);
-}
-
-struct xenbus_for_drv {
- int (*fn)(struct xenbus_driver *, void *);
- void *data;
-};
-
-static int for_drv(struct device_driver *_drv, void *_data)
-{
- struct xenbus_driver *drv = to_xenbus_driver(_drv);
- struct xenbus_for_drv *data = _data;
- return data->fn(drv, data->data);
-}
-
-int xenbus_for_each_drv(struct xenbus_driver * start, void * data,
- int (*fn)(struct xenbus_driver *, void *))
-{
- struct xenbus_for_drv for_data = {
- .fn = fn,
- .data = data,
- };
- if (!fn)
- return -EINVAL;
- return bus_for_each_drv(&xenbus_type,
- (start ? &start->driver: NULL),
- &for_data, for_drv);
-}
-
-static int xenbus_dev_probe(struct device *_dev)
-{
- struct xenbus_device *dev = to_xenbus_device(_dev);
- struct xenbus_driver *drv = to_xenbus_driver(_dev->driver);
- const struct xenbus_device_id *id;
-
- if (!drv->probe)
- return -ENODEV;
-
- id = match_device(drv->ids, dev);
- if (!id)
- return -ENODEV;
- return drv->probe(dev, id);
-}
-
-static int xenbus_dev_remove(struct device *_dev)
-{
- struct xenbus_device *dev = to_xenbus_device(_dev);
- struct xenbus_driver *drv = to_xenbus_driver(_dev->driver);
-
- if (!drv->remove)
- return 0;
- return drv->remove(dev);
-}
-
-int xenbus_register_driver(struct xenbus_driver *drv)
-{
- int err = 0;
-
- printk("%s> frontend driver %p %s\n", __FUNCTION__,
- drv, drv->name);
- drv->driver.name = drv->name;
- drv->driver.bus = &xenbus_type;
- drv->driver.owner = drv->owner;
- drv->driver.probe = xenbus_dev_probe;
- drv->driver.remove = xenbus_dev_remove;
-
- err = driver_register(&drv->driver);
- if (err == 0 && xs_init_done && drv->connect) {
- printk("%s> connecting driver %p %s\n", __FUNCTION__,
- drv, drv->name);
- drv->connect(drv);
- }
- return err;
-}
-
-void xenbus_unregister_driver(struct xenbus_driver *drv)
-{
- driver_unregister(&drv->driver);
-}
-
-static int xenbus_probe_device(const char *dir, const char *name)
-{
- int err;
- struct xenbus_device *xendev;
- unsigned int xendev_n;
- long id;
- char *nodename, *devicetype;
- unsigned int devicetype_n;
-
- dprintf("> dir=%s name=%s\n", dir, name);
- nodename = xenbus_path(dir, name);
- if (!nodename)
- return -ENOMEM;
-
- devicetype = xenbus_read(nodename, XENBUS_DEVICE_TYPE, &devicetype_n);
- if (IS_ERR(devicetype)) {
- err = PTR_ERR(devicetype);
- goto free_nodename;
- }
-
- err = xenbus_read_long(nodename, XENBUS_DEVICE_ID, &id);
- if (err == -ENOENT)
- id = 0;
- else if (err != 0)
- goto free_devicetype;
-
- dprintf("> devicetype='%s' name='%s' id=%ld\n", devicetype, name, id);
- /* FIXME: This could be a rescan. Don't re-register existing devices. */
-
- /* Add space for the strings. */
- xendev_n = sizeof(*xendev) + strlen(nodename) + strlen(devicetype) + 2;
- xendev = kmalloc(xendev_n, GFP_KERNEL);
- if (!xendev) {
- err = -ENOMEM;
- goto free_devicetype;
- }
- memset(xendev, 0, xendev_n);
-
- snprintf(xendev->dev.bus_id, BUS_ID_SIZE, "%s-%s", devicetype, name);
- xendev->dev.bus = &xenbus_type;
-
- xendev->id = id;
-
- /* Copy the strings into the extra space. */
- xendev->nodename = (char *)(xendev + 1);
- strcpy(xendev->nodename, nodename);
- xendev->devicetype = xendev->nodename + strlen(xendev->nodename) + 1;
- strcpy(xendev->devicetype, devicetype);
-
- /* Register with generic device framework. */
- printk("XENBUS: Registering device %s\n", xendev->dev.bus_id);
- err = device_register(&xendev->dev);
- if (err) {
- printk("XENBUS: Registering device %s: error %i\n",
- xendev->dev.bus_id, err);
- kfree(xendev);
- }
-
-free_devicetype:
- kfree(devicetype);
-free_nodename:
- kfree(nodename);
- dprintf("< err=%i\n", err);
- return err;
-}
-
-static int xenbus_probe_device_type(const char *dirpath, const char *typename)
-{
- int err = 0;
- char **dir;
- char *path;
- unsigned int dir_n = 0;
- int i;
-
- dprintf("> dirpath=%s typename=%s\n", dirpath, typename);
- path = xenbus_path(dirpath, typename);
- if (!path)
- return -ENOMEM;
-
- dir = xs_directory(path, &dir_n);
- if (IS_ERR(dir)) {
- err = PTR_ERR(dir);
- goto out;
- }
-
- for (i = 0; i < dir_n; i++) {
- err = xenbus_probe_device(path, dir[i]);
- if (err)
- break;
- }
- kfree(dir);
-out:
- kfree(path);
- dprintf("< err=%i\n", err);
- return err;
-}
-
-static int xenbus_probe_devices(const char *path)
-{
- int err = 0;
- char **dir;
- unsigned int i, dir_n;
-
- dprintf("> path=%s\n", path);
- down(&xs_lock);
- dir = xs_directory(path, &dir_n);
- if (IS_ERR(dir)) {
- err = PTR_ERR(dir);
- goto unlock;
- }
- for (i = 0; i < dir_n; i++) {
- err = xenbus_probe_device_type(path, dir[i]);
- if (err)
- break;
- }
- kfree(dir);
-unlock:
- up(&xs_lock);
- dprintf("< err=%i\n", err);
- return err;
-}
-
-
-static int xenbus_probe_backend(const char *dir, const char *name)
-{
- int err = 0;
- struct xenbus_device *xendev = NULL;
- unsigned int xendev_n = 0;
- char *nodename = NULL, *devicetype = NULL;
- unsigned int devicetype_n = 0;
-
- dprintf("> dir=%s name=%s\n", dir, name);
- nodename = xenbus_path(dir, name);
- if (!nodename)
- return -ENOMEM;
-
- devicetype = xenbus_read(nodename, XENBUS_DEVICE_TYPE, &devicetype_n);
- if (IS_ERR(devicetype)) {
- err = PTR_ERR(devicetype);
- goto free_nodename;
- }
-
- dprintf("> devicetype='%s'\n", devicetype);
- /* FIXME: This could be a rescan. Don't re-register existing devices. */
-
- /* Add space for the strings. */
- xendev_n = sizeof(*xendev) + strlen(nodename) + strlen(devicetype) + 2;
- xendev = kmalloc(xendev_n, GFP_KERNEL);
- if (!xendev) {
- err = -ENOMEM;
- goto free_devicetype;
- }
- memset(xendev, 0, xendev_n);
-
- snprintf(xendev->dev.bus_id, BUS_ID_SIZE, "%s", devicetype);
- xendev->dev.bus = &xenback_type;
-
- /* Copy the strings into the extra space. */
- xendev->nodename = (char *)(xendev + 1);
- strcpy(xendev->nodename, nodename);
- xendev->devicetype = xendev->nodename + strlen(xendev->nodename) + 1;
- strcpy(xendev->devicetype, devicetype);
-
- /* Register with generic device framework. */
- printk("XENBUS: Registering backend %s\n", xendev->dev.bus_id);
- err = device_register(&xendev->dev);
- if (err) {
- printk("XENBUS: Registering device %s: error %i\n",
- xendev->dev.bus_id, err);
- kfree(xendev);
- }
-
-free_devicetype:
- kfree(devicetype);
-free_nodename:
- kfree(nodename);
- dprintf("< err=%i\n", err);
- return err;
-}
-
-static int xenbus_probe_backends(const char *path)
-{
- int err = 0;
- char **dir;
- unsigned int i, dir_n;
-
- dprintf("> path=%s\n", path);
- down(&xs_lock);
- dir = xs_directory(path, &dir_n);
- if (IS_ERR(dir)) {
- err = PTR_ERR(dir);
- goto unlock;
- }
- for (i = 0; i < dir_n; i++) {
- err = xenbus_probe_backend(path, dir[i]);
- if (err)
- break;
- }
- kfree(dir);
-unlock:
- up(&xs_lock);
- dprintf("< err=%i\n", err);
- return err;
-}
-
-int xenbus_register_backend(struct xenbus_driver *drv)
-{
- int err = 0;
-
- printk("%s> backend driver %p %s\n", __FUNCTION__,
- drv, drv->name);
- drv->driver.name = drv->name;
- drv->driver.bus = &xenback_type;
- drv->driver.owner = drv->owner;
- drv->driver.probe = xenbus_dev_probe;
- drv->driver.remove = xenbus_dev_remove;
-
- err = driver_register(&drv->driver);
- if (err == 0 && xs_init_done && drv->connect) {
- printk("%s> connecting driver %p %s\n", __FUNCTION__,
- drv, drv->name);
- drv->connect(drv);
- }
- return err;
-}
-
-void xenbus_unregister_backend(struct xenbus_driver *drv)
-{
- driver_unregister(&drv->driver);
-}
-
-int xenbus_for_each_backend(struct xenbus_driver * start, void * data,
- int (*fn)(struct xenbus_driver *, void *))
-{
- struct xenbus_for_drv for_data = {
- .fn = fn,
- .data = data,
- };
- if (!fn)
- return -EINVAL;
- return bus_for_each_drv(&xenback_type,
- (start ? &start->driver: NULL),
- &for_data, for_drv);
-}
-
-static void test_callback(struct xenbus_watch *w, const char *node)
-{
- printk("test_callback: got watch hit for %s\n", node);
-}
-
-static void test_watch(void)
-{
- static int init_done = 0;
- static struct xenbus_watch watch = { .node = "/",
- .priority = 0,
- .callback = test_callback };
-
- if (init_done)
- return;
- printk("registering watch %lX = %i\n",
- (long)&watch,
- register_xenbus_watch(&watch));
- init_done = 1;
-}
-
-static int xenbus_driver_connect(struct xenbus_driver *drv, void *data)
-{
- printk("%s> driver %p %s\n", __FUNCTION__, drv, drv->name);
- if (drv->connect) {
- printk("%s> connecting driver %p %s\n", __FUNCTION__,
- drv, drv->name);
- drv->connect(drv);
- }
- printk("%s< driver %p %s\n", __FUNCTION__, drv, drv->name);
- return 0;
-}
-
-int do_xenbus_connect(void *unused)
-{
- int err = 0;
-
- printk("%s> xs_init_done=%d\n", __FUNCTION__, xs_init_done);
- if (xs_init_done)
- goto exit;
- /* Initialize xenstore comms unless already done. */
- printk("store_evtchn = %i\n", xen_start_info.store_evtchn);
- err = xs_init();
- if (err) {
- printk("XENBUS: Error initializing xenstore comms:"
- " %i\n", err);
- goto exit;
- }
- xs_init_done = 1;
-
- /* Notify drivers that xenstore has connected. */
- test_watch();
- printk("%s> connect drivers...\n", __FUNCTION__);
- xenbus_for_each_drv(NULL, NULL, xenbus_driver_connect);
- printk("%s> connect backends...\n", __FUNCTION__);
- xenbus_for_each_backend(NULL, NULL, xenbus_driver_connect);
-
- /* Enumerate devices and backends in xenstore. */
- xenbus_probe_devices(XENBUS_DEVICE_DIR);
- xenbus_probe_backends(XENBUS_BACKEND_DIR);
-
-exit:
- printk("%s< err=%d\n", __FUNCTION__, err);
- return err;
-}
-
-static int __init xenbus_probe_init(void)
-{
- bus_register(&xenbus_type);
- bus_register(&xenback_type);
-
- if (!xen_start_info.store_evtchn)
- return 0;
-
- do_xenbus_connect(NULL);
- return 0;
-}
-
-postcore_initcall(xenbus_probe_init);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/drivers/xen/xenbus/xenbus_xs.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/xenbus/xenbus_xs.c Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,488 +0,0 @@
-/******************************************************************************
- * xenbus_xs.c
- *
- * This is the kernel equivalent of the "xs" library. We don't need everything
- * and we use xenbus_comms to communication.
- *
- * Copyright (C) 2005 Rusty Russell, IBM Corporation
- *
- * This file may be distributed separately from the Linux kernel, or
- * incorporated into other software packages, subject to the following license:
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this source file (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use, copy, modify,
- * merge, publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-#include <linux/errno.h>
-#include <linux/types.h>
-#include "xenstore/xenstored.h"
-#include <linux/uio.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/err.h>
-#include <linux/slab.h>
-#include <linux/fcntl.h>
-#include <linux/kthread.h>
-#include <asm-xen/xenbus.h>
-#include "xenbus_comms.h"
-
-#define streq(a, b) (strcmp((a), (b)) == 0)
-
-static void *xs_in, *xs_out;
-static LIST_HEAD(watches);
-static DECLARE_MUTEX(watches_lock);
-DECLARE_MUTEX(xs_lock);
-
-static int get_error(const char *errorstring)
-{
- unsigned int i;
-
- for (i = 0; !streq(errorstring, xsd_errors[i].errstring); i++) {
- if (i == ARRAY_SIZE(xsd_errors) - 1) {
- printk(KERN_WARNING
- "XENBUS xen store gave: unknown error %s",
- errorstring);
- return EINVAL;
- }
- }
- return xsd_errors[i].errnum;
-}
-
-static void *read_reply(enum xsd_sockmsg_type *type, unsigned int *len)
-{
- struct xsd_sockmsg msg;
- void *ret;
- int err;
-
- err = xb_read(xs_in, &msg, sizeof(msg));
- if (err)
- return ERR_PTR(err);
-
- ret = kmalloc(msg.len + 1, GFP_KERNEL);
- if (!ret)
- return ERR_PTR(-ENOMEM);
-
- err = xb_read(xs_in, ret, msg.len);
- if (err) {
- kfree(ret);
- return ERR_PTR(err);
- }
- ((char*)ret)[msg.len] = '\0';
-
- *type = msg.type;
- if (len)
- *len = msg.len;
- return ret;
-}
-
-/* Send message to xs, get kmalloc'ed reply. ERR_PTR() on error. */
-static void *xs_talkv(enum xsd_sockmsg_type type,
- const struct kvec *iovec,
- unsigned int num_vecs,
- unsigned int *len)
-{
- struct xsd_sockmsg msg;
- void *ret = NULL;
- unsigned int i;
- int err;
-
- WARN_ON(down_trylock(&xs_lock) == 0);
-
- msg.type = type;
- msg.len = 0;
- for (i = 0; i < num_vecs; i++)
- msg.len += iovec[i].iov_len;
-
- err = xb_write(xs_out, &msg, sizeof(msg));
- if (err)
- return ERR_PTR(err);
-
- for (i = 0; i < num_vecs; i++) {
- err = xb_write(xs_out, iovec[i].iov_base, iovec[i].iov_len);;
- if (err)
- return ERR_PTR(err);
- }
-
- /* Watches can have fired before reply comes: daemon detects
- * and re-transmits, so we can ignore this. */
- do {
- kfree(ret);
- ret = read_reply(&msg.type, len);
- if (IS_ERR(ret))
- return ret;
- } while (msg.type == XS_WATCH_EVENT);
-
- if (msg.type == XS_ERROR) {
- err = get_error(ret);
- kfree(ret);
- return ERR_PTR(-err);
- }
-
- BUG_ON(msg.type != type);
- return ret;
-}
-
-/* Simplified version of xs_talkv: single message. */
-static void *xs_single(enum xsd_sockmsg_type type,
- const char *string, unsigned int *len)
-{
- struct kvec iovec;
-
- iovec.iov_base = (void *)string;
- iovec.iov_len = strlen(string) + 1;
- return xs_talkv(type, &iovec, 1, len);
-}
-
-/* Many commands only need an ack, don't care what it says. */
-static int xs_error(char *reply)
-{
- if (IS_ERR(reply))
- return PTR_ERR(reply);
- kfree(reply);
- return 0;
-}
-
-static unsigned int count_strings(const char *strings, unsigned int len)
-{
- unsigned int num;
- const char *p;
-
- for (p = strings, num = 0; p < strings + len; p += strlen(p) + 1)
- num++;
-
- return num;
-}
-
-char **xs_directory(const char *path, unsigned int *num)
-{
- char *strings, *p, **ret;
- unsigned int len;
-
- strings = xs_single(XS_DIRECTORY, path, &len);
- if (IS_ERR(strings))
- return (char **)strings;
-
- /* Count the strings. */
- *num = count_strings(strings, len);
-
- /* Transfer to one big alloc for easy freeing. */
- ret = kmalloc(*num * sizeof(char *) + len, GFP_ATOMIC);
- if (!ret) {
- kfree(strings);
- return ERR_PTR(-ENOMEM);
- }
- memcpy(&ret[*num], strings, len);
- kfree(strings);
-
- strings = (char *)&ret[*num];
- for (p = strings, *num = 0; p < strings + len; p += strlen(p) + 1)
- ret[(*num)++] = p;
- return ret;
-}
-
-/* Check if a path exists. Return 1 if it does. */
-int xs_exists(const char *path)
-{
- char **dir;
- int dir_n;
-
- dir = xs_directory(path, &dir_n);
- if (IS_ERR(dir))
- return 0;
- kfree(dir);
- return 1;
-}
-
-/* Make a directory, creating dirs on the path to it if necessary.
- * Return 0 on success, error code otherwise.
- */
-int xs_mkdirs(const char *path)
-{
- int err = 0;
- char s[strlen(path) + 1], *p = s;
-
- if (xs_exists(path))
- goto out;
- strcpy(p, path);
- if (*p == '/')
- p++;
- for (;;) {
- p = strchr(p, '/');
- if (p)
- *p = '\0';
- if (!xs_exists(s)) {
- err = xs_mkdir(s);
- if (err)
- goto out;
- }
- if (!p)
- break;
- *p++ = '/';
- }
- out:
- return err;
-}
-
-
-/* Get the value of a single file.
- * Returns a kmalloced value: call free() on it after use.
- * len indicates length in bytes.
- */
-void *xs_read(const char *path, unsigned int *len)
-{
- return xs_single(XS_READ, path, len);
-}
-
-/* Write the value of a single file.
- * Returns -err on failure. createflags can be 0, O_CREAT, or O_CREAT|O_EXCL.
- */
-int xs_write(const char *path,
- const void *data, unsigned int len, int createflags)
-{
- const char *flags;
- struct kvec iovec[3];
-
- /* Format: Flags (as string), path, data. */
- if (createflags == 0)
- flags = XS_WRITE_NONE;
- else if (createflags == O_CREAT)
- flags = XS_WRITE_CREATE;
- else if (createflags == (O_CREAT|O_EXCL))
- flags = XS_WRITE_CREATE_EXCL;
- else
- return -EINVAL;
-
- iovec[0].iov_base = (void *)path;
- iovec[0].iov_len = strlen(path) + 1;
- iovec[1].iov_base = (void *)flags;
- iovec[1].iov_len = strlen(flags) + 1;
- iovec[2].iov_base = (void *)data;
- iovec[2].iov_len = len;
-
- return xs_error(xs_talkv(XS_WRITE, iovec, ARRAY_SIZE(iovec), NULL));
-}
-
-/* Create a new directory. */
-int xs_mkdir(const char *path)
-{
- return xs_error(xs_single(XS_MKDIR, path, NULL));
-}
-
-/* Destroy a file or directory (directories must be empty). */
-int xs_rm(const char *path)
-{
- return xs_error(xs_single(XS_RM, path, NULL));
-}
-
-/* Start a transaction: changes by others will not be seen during this
- * transaction, and changes will not be visible to others until end.
- * Transaction only applies to the given subtree.
- * You can only have one transaction at any time.
- */
-int xs_transaction_start(const char *subtree)
-{
- return xs_error(xs_single(XS_TRANSACTION_START, subtree, NULL));
-}
-
-/* End a transaction.
- * If abandon is true, transaction is discarded instead of committed.
- */
-int xs_transaction_end(int abort)
-{
- char abortstr[2];
-
- if (abort)
- strcpy(abortstr, "F");
- else
- strcpy(abortstr, "T");
- return xs_error(xs_single(XS_TRANSACTION_END, abortstr, NULL));
-}
-
-char *xs_get_domain_path(domid_t domid)
-{
- char domid_str[32];
-
- sprintf(domid_str, "%u", domid);
- return xs_single(XS_GETDOMAINPATH, domid_str, NULL);
-}
-
-static int xs_watch(const char *path, const char *token, unsigned int priority)
-{
- char prio[32];
- struct kvec iov[3];
-
- sprintf(prio, "%u", priority);
- iov[0].iov_base = (void *)path;
- iov[0].iov_len = strlen(path) + 1;
- iov[1].iov_base = (void *)token;
- iov[1].iov_len = strlen(token) + 1;
- iov[2].iov_base = prio;
- iov[2].iov_len = strlen(prio) + 1;
-
- return xs_error(xs_talkv(XS_WATCH, iov, ARRAY_SIZE(iov), NULL));
-}
-
-static char *xs_read_watch(char **token)
-{
- enum xsd_sockmsg_type type;
- char *ret;
-
- ret = read_reply(&type, NULL);
- if (IS_ERR(ret))
- return ret;
-
- BUG_ON(type != XS_WATCH_EVENT);
- *token = ret + strlen(ret) + 1;
- return ret;
-}
-
-static int xs_acknowledge_watch(const char *token)
-{
- return xs_error(xs_single(XS_WATCH_ACK, token, NULL));
-}
-
-static int xs_unwatch(const char *path, const char *token)
-{
- struct kvec iov[2];
-
- iov[0].iov_base = (char *)path;
- iov[0].iov_len = strlen(path) + 1;
- iov[1].iov_base = (char *)token;
- iov[1].iov_len = strlen(token) + 1;
-
- return xs_error(xs_talkv(XS_UNWATCH, iov, ARRAY_SIZE(iov), NULL));
-}
-
-/* A little paranoia: we don't just trust token. */
-static struct xenbus_watch *find_watch(const char *token)
-{
- struct xenbus_watch *i, *cmp;
-
- cmp = (void *)simple_strtoul(token, NULL, 16);
-
- list_for_each_entry(i, &watches, list)
- if (i == cmp)
- return i;
- return NULL;
-}
-
-/* Register callback to watch this node. */
-int register_xenbus_watch(struct xenbus_watch *watch)
-{
- /* Pointer in ascii is the token. */
- char token[sizeof(watch) * 2 + 1];
- int err;
-
- sprintf(token, "%lX", (long)watch);
- down(&watches_lock);
- BUG_ON(find_watch(token));
-
- down(&xs_lock);
- err = xs_watch(watch->node, token, watch->priority);
- up(&xs_lock);
- if (!err)
- list_add(&watch->list, &watches);
- up(&watches_lock);
- return err;
-}
-
-void unregister_xenbus_watch(struct xenbus_watch *watch)
-{
- char token[sizeof(watch) * 2 + 1];
- int err;
-
- sprintf(token, "%lX", (long)watch);
- down(&watches_lock);
- BUG_ON(!find_watch(token));
-
- down(&xs_lock);
- err = xs_unwatch(watch->node, token);
- up(&xs_lock);
- list_del(&watch->list);
- up(&watches_lock);
-
- if (err)
- printk(KERN_WARNING "XENBUS Failed to release watch %s: %i\n",
- watch->node, err);
-}
-
-static int watch_thread(void *unused)
-{
- int err;
- unsigned long mtu;
-
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(HZ*10);
- printk("watch_thread, doing read\n");
- down(&xs_lock);
- err = xenbus_read_long("", "mtu", &mtu);
- up(&xs_lock);
- printk("fake field read: %i (%lu)\n", err, mtu);
-
- for (;;) {
- char *token;
- char *node = NULL;
-
- wait_event(xb_waitq, xs_input_avail(xs_in));
-
- /* If this is a spurious wakeup caused by someone
- * doing an op, they'll hold the lock and the buffer
- * will be empty by the time we get there.
- */
- down(&xs_lock);
- if (xs_input_avail(xs_in))
- node = xs_read_watch(&token);
- /* Release lock before calling callback. */
- up(&xs_lock);
- if (node && !IS_ERR(node)) {
- struct xenbus_watch *w;
- int err;
-
- down(&watches_lock);
- w = find_watch(token);
- BUG_ON(!w);
- w->callback(w, node);
- up(&watches_lock);
- down(&xs_lock);
- err = xs_acknowledge_watch(token);
- if (err)
- printk(KERN_WARNING
- "XENBUS acknowledge %s failed %i\n",
- node, err);
- up(&xs_lock);
- kfree(node);
- } else
- printk(KERN_WARNING "XENBUS xs_read_watch: %li\n",
- PTR_ERR(node));
- }
-}
-
-int xs_init(void)
-{
- int err;
- struct task_struct *watcher;
-
- err = xb_init_comms(&xs_in, &xs_out);
- if (err)
- return err;
-
- watcher = kthread_run(watch_thread, NULL, "kxbwatch");
- if (IS_ERR(watcher))
- return PTR_ERR(watcher);
- return 0;
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-generic/pgtable.h
--- a/linux-2.6.11-xen-sparse/include/asm-generic/pgtable.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,147 +0,0 @@
-#ifndef _ASM_GENERIC_PGTABLE_H
-#define _ASM_GENERIC_PGTABLE_H
-
-#ifndef __HAVE_ARCH_PTEP_ESTABLISH
-/*
- * Establish a new mapping:
- * - flush the old one
- * - update the page tables
- * - inform the TLB about the new one
- *
- * We hold the mm semaphore for reading and vma->vm_mm->page_table_lock.
- *
- * Note: the old pte is known to not be writable, so we don't need to
- * worry about dirty bits etc getting lost.
- */
-#ifndef __HAVE_ARCH_SET_PTE_ATOMIC
-#define ptep_establish(__vma, __address, __ptep, __entry) \
-do { \
- set_pte(__ptep, __entry); \
- flush_tlb_page(__vma, __address); \
-} while (0)
-#else /* __HAVE_ARCH_SET_PTE_ATOMIC */
-#define ptep_establish(__vma, __address, __ptep, __entry) \
-do { \
- set_pte_atomic(__ptep, __entry); \
- flush_tlb_page(__vma, __address); \
-} while (0)
-#endif /* __HAVE_ARCH_SET_PTE_ATOMIC */
-#endif
-
-#ifndef __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
-/*
- * Largely same as above, but only sets the access flags (dirty,
- * accessed, and writable). Furthermore, we know it always gets set
- * to a "more permissive" setting, which allows most architectures
- * to optimize this.
- */
-#define ptep_set_access_flags(__vma, __address, __ptep, __entry, __dirty) \
-do { \
- set_pte(__ptep, __entry); \
- flush_tlb_page(__vma, __address); \
-} while (0)
-#endif
-
-#ifndef __HAVE_ARCH_PTEP_ESTABLISH_NEW
-/*
- * Establish a mapping where none previously existed
- */
-#define ptep_establish_new(__vma, __address, __ptep, __entry) \
-do { \
- set_pte(__ptep, __entry); \
-} while (0)
-#endif
-
-#ifndef __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
-static inline int ptep_test_and_clear_young(pte_t *ptep)
-{
- pte_t pte = *ptep;
- if (!pte_young(pte))
- return 0;
- set_pte(ptep, pte_mkold(pte));
- return 1;
-}
-#endif
-
-#ifndef __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH
-#define ptep_clear_flush_young(__vma, __address, __ptep) \
-({ \
- int __young = ptep_test_and_clear_young(__ptep); \
- if (__young) \
- flush_tlb_page(__vma, __address); \
- __young; \
-})
-#endif
-
-#ifndef __HAVE_ARCH_PTEP_TEST_AND_CLEAR_DIRTY
-static inline int ptep_test_and_clear_dirty(pte_t *ptep)
-{
- pte_t pte = *ptep;
- if (!pte_dirty(pte))
- return 0;
- set_pte(ptep, pte_mkclean(pte));
- return 1;
-}
-#endif
-
-#ifndef __HAVE_ARCH_PTEP_CLEAR_DIRTY_FLUSH
-#define ptep_clear_flush_dirty(__vma, __address, __ptep) \
-({ \
- int __dirty = ptep_test_and_clear_dirty(__ptep); \
- if (__dirty) \
- flush_tlb_page(__vma, __address); \
- __dirty; \
-})
-#endif
-
-#ifndef __HAVE_ARCH_PTEP_GET_AND_CLEAR
-static inline pte_t ptep_get_and_clear(pte_t *ptep)
-{
- pte_t pte = *ptep;
- pte_clear(ptep);
- return pte;
-}
-#endif
-
-#ifndef __HAVE_ARCH_PTEP_CLEAR_FLUSH
-#define ptep_clear_flush(__vma, __address, __ptep) \
-({ \
- pte_t __pte = ptep_get_and_clear(__ptep); \
- flush_tlb_page(__vma, __address); \
- __pte; \
-})
-#endif
-
-#ifndef __HAVE_ARCH_PTEP_SET_WRPROTECT
-static inline void ptep_set_wrprotect(pte_t *ptep)
-{
- pte_t old_pte = *ptep;
- set_pte(ptep, pte_wrprotect(old_pte));
-}
-#endif
-
-#ifndef __HAVE_ARCH_PTEP_MKDIRTY
-static inline void ptep_mkdirty(pte_t *ptep)
-{
- pte_t old_pte = *ptep;
- set_pte(ptep, pte_mkdirty(old_pte));
-}
-#endif
-
-#ifndef __HAVE_ARCH_PTE_SAME
-#define pte_same(A,B) (pte_val(A) == pte_val(B))
-#endif
-
-#ifndef __HAVE_ARCH_PAGE_TEST_AND_CLEAR_DIRTY
-#define page_test_and_clear_dirty(page) (0)
-#endif
-
-#ifndef __HAVE_ARCH_PAGE_TEST_AND_CLEAR_YOUNG
-#define page_test_and_clear_young(page) (0)
-#endif
-
-#ifndef __HAVE_ARCH_PGD_OFFSET_GATE
-#define pgd_offset_gate(mm, addr) pgd_offset(mm, addr)
-#endif
-
-#endif /* _ASM_GENERIC_PGTABLE_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/agp.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/agp.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,37 +0,0 @@
-#ifndef AGP_H
-#define AGP_H 1
-
-#include <asm/pgtable.h>
-#include <asm/cacheflush.h>
-#include <asm/system.h>
-
-/*
- * Functions to keep the agpgart mappings coherent with the MMU.
- * The GART gives the CPU a physical alias of pages in memory. The alias
region is
- * mapped uncacheable. Make sure there are no conflicting mappings
- * with different cachability attributes for the same page. This avoids
- * data corruption on some CPUs.
- */
-
-int map_page_into_agp(struct page *page);
-int unmap_page_from_agp(struct page *page);
-#define flush_agp_mappings() global_flush_tlb()
-
-/* Could use CLFLUSH here if the cpu supports it. But then it would
- need to be called for each cacheline of the whole page so it may not be
- worth it. Would need a page for it. */
-#define flush_agp_cache() wbinvd()
-
-/* Convert a physical address to an address suitable for the GART. */
-#define phys_to_gart(x) phys_to_machine(x)
-#define gart_to_phys(x) machine_to_phys(x)
-
-/* GATT allocation. Returns/accepts GATT kernel virtual address. */
-#define alloc_gatt_pages(order) ({
\
- char *_t; dma_addr_t _d; \
- _t = dma_alloc_coherent(NULL,PAGE_SIZE<<(order),&_d,GFP_KERNEL); \
- _t; })
-#define free_gatt_pages(table, order) \
- dma_free_coherent(NULL,PAGE_SIZE<<(order),(table),virt_to_bus(table))
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/desc.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/desc.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,142 +0,0 @@
-#ifndef __ARCH_DESC_H
-#define __ARCH_DESC_H
-
-#include <asm/ldt.h>
-#include <asm/segment.h>
-
-#ifndef __ASSEMBLY__
-
-#include <linux/preempt.h>
-#include <linux/smp.h>
-
-#include <asm/mmu.h>
-
-extern struct desc_struct cpu_gdt_table[NR_CPUS][GDT_ENTRIES];
-
-struct Xgt_desc_struct {
- unsigned short size;
- unsigned long address __attribute__((packed));
- unsigned short pad;
-} __attribute__ ((packed));
-
-extern struct Xgt_desc_struct idt_descr, cpu_gdt_descr[NR_CPUS];
-
-#define load_TR_desc() __asm__ __volatile__("ltr %%ax"::"a" (GDT_ENTRY_TSS*8))
-#define load_LDT_desc() __asm__ __volatile__("lldt %%ax"::"a"
(GDT_ENTRY_LDT*8))
-
-#define get_cpu_gdt_table(_cpu) ((struct desc_struct
*)cpu_gdt_descr[(_cpu)].address)
-
-/*
- * This is the ldt that every process will get unless we need
- * something other than this.
- */
-extern struct desc_struct default_ldt[];
-extern void set_intr_gate(unsigned int irq, void * addr);
-
-#define _set_tssldt_desc(n,addr,limit,type) \
-__asm__ __volatile__ ("movw %w3,0(%2)\n\t" \
- "movw %%ax,2(%2)\n\t" \
- "rorl $16,%%eax\n\t" \
- "movb %%al,4(%2)\n\t" \
- "movb %4,5(%2)\n\t" \
- "movb $0,6(%2)\n\t" \
- "movb %%ah,7(%2)\n\t" \
- "rorl $16,%%eax" \
- : "=m"(*(n)) : "a" (addr), "r"(n), "ir"(limit), "i"(type))
-
-static inline void __set_tss_desc(unsigned int cpu, unsigned int entry, void
*addr)
-{
- _set_tssldt_desc(&get_cpu_gdt_table(cpu)[entry], (int)addr,
- offsetof(struct tss_struct, __cacheline_filler) - 1, 0x89);
-}
-
-#define set_tss_desc(cpu,addr) __set_tss_desc(cpu, GDT_ENTRY_TSS, addr)
-
-static inline void set_ldt_desc(unsigned int cpu, void *addr, unsigned int
size)
-{
- _set_tssldt_desc(&get_cpu_gdt_table(cpu)[GDT_ENTRY_LDT],
- (int)addr, ((size << 3)-1), 0x82);
-}
-
-#define LDT_entry_a(info) \
- ((((info)->base_addr & 0x0000ffff) << 16) | ((info)->limit & 0x0ffff))
-
-#define LDT_entry_b(info) \
- (((info)->base_addr & 0xff000000) | \
- (((info)->base_addr & 0x00ff0000) >> 16) | \
- ((info)->limit & 0xf0000) | \
- (((info)->read_exec_only ^ 1) << 9) | \
- ((info)->contents << 10) | \
- (((info)->seg_not_present ^ 1) << 15) | \
- ((info)->seg_32bit << 22) | \
- ((info)->limit_in_pages << 23) | \
- ((info)->useable << 20) | \
- 0x7000)
-
-#define LDT_empty(info) (\
- (info)->base_addr == 0 && \
- (info)->limit == 0 && \
- (info)->contents == 0 && \
- (info)->read_exec_only == 1 && \
- (info)->seg_32bit == 0 && \
- (info)->limit_in_pages == 0 && \
- (info)->seg_not_present == 1 && \
- (info)->useable == 0 )
-
-#if TLS_SIZE != 24
-# error update this code.
-#endif
-
-static inline void load_TLS(struct thread_struct *t, unsigned int cpu)
-{
-#define C(i)
HYPERVISOR_update_descriptor(virt_to_machine(&get_cpu_gdt_table(cpu)[GDT_ENTRY_TLS_MIN
+ i]), ((u32 *)&t->tls_array[i])[0], ((u32 *)&t->tls_array[i])[1])
- C(0); C(1); C(2);
-#undef C
-}
-
-static inline void clear_LDT(void)
-{
- int cpu = get_cpu();
-
- /*
- * NB. We load the default_ldt for lcall7/27 handling on demand, as
- * it slows down context switching. Noone uses it anyway.
- */
- cpu = cpu; /* XXX avoid compiler warning */
- xen_set_ldt(0UL, 0);
- put_cpu();
-}
-
-/*
- * load one particular LDT into the current CPU
- */
-static inline void load_LDT_nolock(mm_context_t *pc, int cpu)
-{
- void *segments = pc->ldt;
- int count = pc->size;
-
- if (likely(!count))
- segments = NULL;
-
- xen_set_ldt((unsigned long)segments, count);
-}
-
-static inline void load_LDT(mm_context_t *pc)
-{
- int cpu = get_cpu();
- load_LDT_nolock(pc, cpu);
- put_cpu();
-}
-
-static inline unsigned long get_desc_base(unsigned long *desc)
-{
- unsigned long base;
- base = ((desc[0] >> 16) & 0x0000ffff) |
- ((desc[1] << 16) & 0x00ff0000) |
- (desc[1] & 0xff000000);
- return base;
-}
-
-#endif /* !__ASSEMBLY__ */
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/dma-mapping.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/dma-mapping.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,177 +0,0 @@
-#ifndef _ASM_I386_DMA_MAPPING_H
-#define _ASM_I386_DMA_MAPPING_H
-
-#include <linux/mm.h>
-
-#include <asm/cache.h>
-#include <asm/io.h>
-#include <asm/scatterlist.h>
-
-#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
-#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
-
-void *dma_alloc_coherent(struct device *dev, size_t size,
- dma_addr_t *dma_handle, int flag);
-
-void dma_free_coherent(struct device *dev, size_t size,
- void *vaddr, dma_addr_t dma_handle);
-
-static inline dma_addr_t
-dma_map_single(struct device *dev, void *ptr, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
- flush_write_buffers();
- return virt_to_bus(ptr);
-}
-
-static inline void
-dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-}
-
-static inline int
-dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
- enum dma_data_direction direction)
-{
- int i;
-
- BUG_ON(direction == DMA_NONE);
-
- for (i = 0; i < nents; i++ ) {
- BUG_ON(!sg[i].page);
-
- sg[i].dma_address = page_to_phys(sg[i].page) + sg[i].offset;
- }
-
- flush_write_buffers();
- return nents;
-}
-
-static inline dma_addr_t
-dma_map_page(struct device *dev, struct page *page, unsigned long offset,
- size_t size, enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
- return page_to_phys(page) + offset;
-}
-
-static inline void
-dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-}
-
-
-static inline void
-dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-}
-
-static inline void
-dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
- enum dma_data_direction direction)
-{
-}
-
-static inline void
-dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t
size,
- enum dma_data_direction direction)
-{
- flush_write_buffers();
-}
-
-static inline void
-dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
- unsigned long offset, size_t size,
- enum dma_data_direction direction)
-{
-}
-
-static inline void
-dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
- unsigned long offset, size_t size,
- enum dma_data_direction direction)
-{
- flush_write_buffers();
-}
-
-static inline void
-dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
- enum dma_data_direction direction)
-{
-}
-
-static inline void
-dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
- enum dma_data_direction direction)
-{
- flush_write_buffers();
-}
-
-static inline int
-dma_mapping_error(dma_addr_t dma_addr)
-{
- return 0;
-}
-
-static inline int
-dma_supported(struct device *dev, u64 mask)
-{
- /*
- * we fall back to GFP_DMA when the mask isn't all 1s,
- * so we can't guarantee allocations that must be
- * within a tighter range than GFP_DMA..
- */
- if(mask < 0x00ffffff)
- return 0;
-
- return 1;
-}
-
-static inline int
-dma_set_mask(struct device *dev, u64 mask)
-{
- if(!dev->dma_mask || !dma_supported(dev, mask))
- return -EIO;
-
- *dev->dma_mask = mask;
-
- return 0;
-}
-
-static inline int
-dma_get_cache_alignment(void)
-{
- /* no easy way to get cache size on all x86, so return the
- * maximum possible, to be safe */
- return (1 << L1_CACHE_SHIFT_MAX);
-}
-
-#define dma_is_consistent(d) (1)
-
-static inline void
-dma_cache_sync(void *vaddr, size_t size,
- enum dma_data_direction direction)
-{
- flush_write_buffers();
-}
-
-#define ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY
-extern int
-dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
- dma_addr_t device_addr, size_t size, int flags);
-
-extern void
-dma_release_declared_memory(struct device *dev);
-
-extern void *
-dma_mark_declared_memory_occupied(struct device *dev,
- dma_addr_t device_addr, size_t size);
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/fixmap.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/fixmap.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,168 +0,0 @@
-/*
- * fixmap.h: compile-time virtual memory allocation
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1998 Ingo Molnar
- *
- * Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999
- */
-
-#ifndef _ASM_FIXMAP_H
-#define _ASM_FIXMAP_H
-
-#include <linux/config.h>
-
-/* used by vmalloc.c, vsyscall.lds.S.
- *
- * Leave one empty page between vmalloc'ed areas and
- * the start of the fixmap.
- */
-#define __FIXADDR_TOP (HYPERVISOR_VIRT_START - 2 * PAGE_SIZE)
-
-#ifndef __ASSEMBLY__
-#include <linux/kernel.h>
-#include <asm/acpi.h>
-#include <asm/apicdef.h>
-#include <asm/page.h>
-#include <asm-xen/gnttab.h>
-#ifdef CONFIG_HIGHMEM
-#include <linux/threads.h>
-#include <asm/kmap_types.h>
-#endif
-
-/*
- * Here we define all the compile-time 'special' virtual
- * addresses. The point is to have a constant address at
- * compile time, but to set the physical address only
- * in the boot process. We allocate these special addresses
- * from the end of virtual memory (0xfffff000) backwards.
- * Also this lets us do fail-safe vmalloc(), we
- * can guarantee that these special addresses and
- * vmalloc()-ed addresses never overlap.
- *
- * these 'compile-time allocated' memory buffers are
- * fixed-size 4k pages. (or larger if used with an increment
- * highger than 1) use fixmap_set(idx,phys) to associate
- * physical memory with fixmap indices.
- *
- * TLB entries of such buffers will not be flushed across
- * task switches.
- */
-enum fixed_addresses {
- FIX_HOLE,
- FIX_VSYSCALL,
-#ifdef CONFIG_X86_LOCAL_APIC
- FIX_APIC_BASE, /* local (CPU) APIC) -- required for SMP or not */
-#endif
-#ifdef CONFIG_X86_IO_APIC
- FIX_IO_APIC_BASE_0,
- FIX_IO_APIC_BASE_END = FIX_IO_APIC_BASE_0 + MAX_IO_APICS-1,
-#endif
-#ifdef CONFIG_X86_VISWS_APIC
- FIX_CO_CPU, /* Cobalt timer */
- FIX_CO_APIC, /* Cobalt APIC Redirection Table */
- FIX_LI_PCIA, /* Lithium PCI Bridge A */
- FIX_LI_PCIB, /* Lithium PCI Bridge B */
-#endif
-#ifdef CONFIG_X86_F00F_BUG
- FIX_F00F_IDT, /* Virtual mapping for IDT */
-#endif
-#ifdef CONFIG_X86_CYCLONE_TIMER
- FIX_CYCLONE_TIMER, /*cyclone timer register*/
-#endif
-#ifdef CONFIG_HIGHMEM
- FIX_KMAP_BEGIN, /* reserved pte's for temporary kernel mappings */
- FIX_KMAP_END = FIX_KMAP_BEGIN+(KM_TYPE_NR*NR_CPUS)-1,
-#endif
-#ifdef CONFIG_ACPI_BOOT
- FIX_ACPI_BEGIN,
- FIX_ACPI_END = FIX_ACPI_BEGIN + FIX_ACPI_PAGES - 1,
- FIX_ACPI_RSDP_PAGE,
-#endif
-#ifdef CONFIG_PCI_MMCONFIG
- FIX_PCIE_MCFG,
-#endif
- FIX_SHARED_INFO,
- FIX_GNTTAB_BEGIN,
- FIX_GNTTAB_END = FIX_GNTTAB_BEGIN + NR_GRANT_FRAMES - 1,
-#ifdef CONFIG_XEN_PHYSDEV_ACCESS
-#define NR_FIX_ISAMAPS 256
- FIX_ISAMAP_END,
- FIX_ISAMAP_BEGIN = FIX_ISAMAP_END + NR_FIX_ISAMAPS - 1,
-#endif
- __end_of_permanent_fixed_addresses,
- /* temporary boot-time mappings, used before ioremap() is functional */
-#define NR_FIX_BTMAPS 16
- FIX_BTMAP_END = __end_of_permanent_fixed_addresses,
- FIX_BTMAP_BEGIN = FIX_BTMAP_END + NR_FIX_BTMAPS - 1,
- FIX_WP_TEST,
- __end_of_fixed_addresses
-};
-
-extern void __set_fixmap (enum fixed_addresses idx,
- unsigned long phys, pgprot_t flags);
-
-#define set_fixmap(idx, phys) \
- __set_fixmap(idx, phys, PAGE_KERNEL)
-/*
- * Some hardware wants to get fixmapped without caching.
- */
-#define set_fixmap_nocache(idx, phys) \
- __set_fixmap(idx, phys, PAGE_KERNEL_NOCACHE)
-
-#define clear_fixmap(idx) \
- __set_fixmap(idx, 0, __pgprot(0))
-
-#define FIXADDR_TOP ((unsigned long)__FIXADDR_TOP)
-
-#define __FIXADDR_SIZE (__end_of_permanent_fixed_addresses << PAGE_SHIFT)
-#define __FIXADDR_BOOT_SIZE (__end_of_fixed_addresses << PAGE_SHIFT)
-#define FIXADDR_START (FIXADDR_TOP - __FIXADDR_SIZE)
-#define FIXADDR_BOOT_START (FIXADDR_TOP - __FIXADDR_BOOT_SIZE)
-
-#define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT))
-#define __virt_to_fix(x) ((FIXADDR_TOP - ((x)&PAGE_MASK)) >> PAGE_SHIFT)
-
-/*
- * This is the range that is readable by user mode, and things
- * acting like user mode such as get_user_pages.
- */
-#define FIXADDR_USER_START (__fix_to_virt(FIX_VSYSCALL))
-#define FIXADDR_USER_END (FIXADDR_USER_START + PAGE_SIZE)
-
-
-extern void __this_fixmap_does_not_exist(void);
-
-/*
- * 'index to address' translation. If anyone tries to use the idx
- * directly without tranlation, we catch the bug with a NULL-deference
- * kernel oops. Illegal ranges of incoming indices are caught too.
- */
-static __always_inline unsigned long fix_to_virt(const unsigned int idx)
-{
- /*
- * this branch gets completely eliminated after inlining,
- * except when someone tries to use fixaddr indices in an
- * illegal way. (such as mixing up address types or using
- * out-of-range indices).
- *
- * If it doesn't get removed, the linker will complain
- * loudly with a reasonably clear error message..
- */
- if (idx >= __end_of_fixed_addresses)
- __this_fixmap_does_not_exist();
-
- return __fix_to_virt(idx);
-}
-
-static inline unsigned long virt_to_fix(const unsigned long vaddr)
-{
- BUG_ON(vaddr >= FIXADDR_TOP || vaddr < FIXADDR_START);
- return __virt_to_fix(vaddr);
-}
-
-#endif /* !__ASSEMBLY__ */
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/floppy.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/floppy.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,147 +0,0 @@
-/*
- * Architecture specific parts of the Floppy driver
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1995
- *
- * Modifications for Xen are Copyright (c) 2004, Keir Fraser.
- */
-#ifndef __ASM_XEN_I386_FLOPPY_H
-#define __ASM_XEN_I386_FLOPPY_H
-
-#include <linux/vmalloc.h>
-
-/* XEN: Hit DMA paths on the head. This trick from asm-m68k/floppy.h. */
-#include <asm/dma.h>
-#undef MAX_DMA_ADDRESS
-#define MAX_DMA_ADDRESS 0
-#define CROSS_64KB(a,s) (0)
-
-#define fd_inb(port) inb_p(port)
-#define fd_outb(value,port) outb_p(value,port)
-
-#define fd_request_dma() (0)
-#define fd_free_dma() ((void)0)
-#define fd_enable_irq() enable_irq(FLOPPY_IRQ)
-#define fd_disable_irq() disable_irq(FLOPPY_IRQ)
-#define fd_free_irq() free_irq(FLOPPY_IRQ, NULL)
-#define fd_get_dma_residue() (virtual_dma_count + virtual_dma_residue)
-#define fd_dma_setup(addr, size, mode, io) vdma_dma_setup(addr, size, mode, io)
-/*
- * Do not use vmalloc/vfree: floppy_release_irq_and_dma() gets called from
- * softirq context via motor_off_callback. A generic bug we happen to trigger.
- */
-#define fd_dma_mem_alloc(size) __get_free_pages(GFP_KERNEL, get_order(size))
-#define fd_dma_mem_free(addr, size) free_pages(addr, get_order(size))
-
-static int virtual_dma_count;
-static int virtual_dma_residue;
-static char *virtual_dma_addr;
-static int virtual_dma_mode;
-static int doing_pdma;
-
-static irqreturn_t floppy_hardint(int irq, void *dev_id, struct pt_regs * regs)
-{
- register unsigned char st;
- register int lcount;
- register char *lptr;
-
- if (!doing_pdma)
- return floppy_interrupt(irq, dev_id, regs);
-
- st = 1;
- for(lcount=virtual_dma_count, lptr=virtual_dma_addr;
- lcount; lcount--, lptr++) {
- st=inb(virtual_dma_port+4) & 0xa0 ;
- if(st != 0xa0)
- break;
- if(virtual_dma_mode)
- outb_p(*lptr, virtual_dma_port+5);
- else
- *lptr = inb_p(virtual_dma_port+5);
- }
- virtual_dma_count = lcount;
- virtual_dma_addr = lptr;
- st = inb(virtual_dma_port+4);
-
- if(st == 0x20)
- return IRQ_HANDLED;
- if(!(st & 0x20)) {
- virtual_dma_residue += virtual_dma_count;
- virtual_dma_count=0;
- doing_pdma = 0;
- floppy_interrupt(irq, dev_id, regs);
- return IRQ_HANDLED;
- }
- return IRQ_HANDLED;
-}
-
-static void fd_disable_dma(void)
-{
- doing_pdma = 0;
- virtual_dma_residue += virtual_dma_count;
- virtual_dma_count=0;
-}
-
-static int fd_request_irq(void)
-{
- return request_irq(FLOPPY_IRQ, floppy_hardint,SA_INTERRUPT,
- "floppy", NULL);
-}
-
-static int vdma_dma_setup(char *addr, unsigned long size, int mode, int io)
-{
- doing_pdma = 1;
- virtual_dma_port = io;
- virtual_dma_mode = (mode == DMA_MODE_WRITE);
- virtual_dma_addr = addr;
- virtual_dma_count = size;
- virtual_dma_residue = 0;
- return 0;
-}
-
-/* XEN: This trick to force 'virtual DMA' is from include/asm-m68k/floppy.h. */
-#define FDC1 xen_floppy_init()
-static int FDC2 = -1;
-
-static int xen_floppy_init(void)
-{
- use_virtual_dma = 1;
- can_use_virtual_dma = 1;
- return 0x3f0;
-}
-
-/*
- * Floppy types are stored in the rtc's CMOS RAM and so rtc_lock
- * is needed to prevent corrupted CMOS RAM in case "insmod floppy"
- * coincides with another rtc CMOS user. Paul G.
- */
-#define FLOPPY0_TYPE ({ \
- unsigned long flags; \
- unsigned char val; \
- spin_lock_irqsave(&rtc_lock, flags); \
- val = (CMOS_READ(0x10) >> 4) & 15; \
- spin_unlock_irqrestore(&rtc_lock, flags); \
- val; \
-})
-
-#define FLOPPY1_TYPE ({ \
- unsigned long flags; \
- unsigned char val; \
- spin_lock_irqsave(&rtc_lock, flags); \
- val = CMOS_READ(0x10) & 15; \
- spin_unlock_irqrestore(&rtc_lock, flags); \
- val; \
-})
-
-#define N_FDC 2
-#define N_DRIVE 8
-
-#define FLOPPY_MOTOR_MASK 0xf0
-
-#define EXTRA_FLOPPY_PARAMS
-
-#endif /* __ASM_XEN_I386_FLOPPY_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/highmem.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/highmem.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,82 +0,0 @@
-/*
- * highmem.h: virtual kernel memory mappings for high memory
- *
- * Used in CONFIG_HIGHMEM systems for memory pages which
- * are not addressable by direct kernel virtual addresses.
- *
- * Copyright (C) 1999 Gerhard Wichert, Siemens AG
- * Gerhard.Wichert@xxxxxxxxxxxxxx
- *
- *
- * Redesigned the x86 32-bit VM architecture to deal with
- * up to 16 Terabyte physical memory. With current x86 CPUs
- * we now support up to 64 Gigabytes physical RAM.
- *
- * Copyright (C) 1999 Ingo Molnar <mingo@xxxxxxxxxx>
- */
-
-#ifndef _ASM_HIGHMEM_H
-#define _ASM_HIGHMEM_H
-
-#ifdef __KERNEL__
-
-#include <linux/config.h>
-#include <linux/interrupt.h>
-#include <linux/threads.h>
-#include <asm/kmap_types.h>
-#include <asm/tlbflush.h>
-
-/* declarations for highmem.c */
-extern unsigned long highstart_pfn, highend_pfn;
-
-extern pte_t *kmap_pte;
-extern pgprot_t kmap_prot;
-extern pte_t *pkmap_page_table;
-
-extern void kmap_init(void);
-
-/*
- * Right now we initialize only a single pte table. It can be extended
- * easily, subsequent pte tables have to be allocated in one physical
- * chunk of RAM.
- */
-#ifdef CONFIG_X86_PAE
-#define LAST_PKMAP 512
-#else
-#define LAST_PKMAP 1024
-#endif
-/*
- * Ordering is:
- *
- * FIXADDR_TOP
- * fixed_addresses
- * FIXADDR_START
- * temp fixed addresses
- * FIXADDR_BOOT_START
- * Persistent kmap area
- * PKMAP_BASE
- * VMALLOC_END
- * Vmalloc area
- * VMALLOC_START
- * high_memory
- */
-#define PKMAP_BASE ( (FIXADDR_BOOT_START - PAGE_SIZE*(LAST_PKMAP + 1)) &
PMD_MASK )
-#define LAST_PKMAP_MASK (LAST_PKMAP-1)
-#define PKMAP_NR(virt) ((virt-PKMAP_BASE) >> PAGE_SHIFT)
-#define PKMAP_ADDR(nr) (PKMAP_BASE + ((nr) << PAGE_SHIFT))
-
-extern void * FASTCALL(kmap_high(struct page *page));
-extern void FASTCALL(kunmap_high(struct page *page));
-
-void *kmap(struct page *page);
-void kunmap(struct page *page);
-void *kmap_atomic(struct page *page, enum km_type type);
-void *kmap_atomic_pte(struct page *page, enum km_type type);
-void kunmap_atomic(void *kvaddr, enum km_type type);
-struct page *kmap_atomic_to_page(void *ptr);
-
-#define flush_cache_kmaps() do { } while (0)
-
-#endif /* __KERNEL__ */
-
-#endif /* _ASM_HIGHMEM_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/hypercall.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/hypercall.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,564 +0,0 @@
-/******************************************************************************
- * hypercall.h
- *
- * Linux-specific hypervisor handling.
- *
- * Copyright (c) 2002-2004, K A Fraser
- *
- * This file may be distributed separately from the Linux kernel, or
- * incorporated into other software packages, subject to the following license:
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this source file (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use, copy, modify,
- * merge, publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-#ifndef __HYPERCALL_H__
-#define __HYPERCALL_H__
-#include <asm-xen/xen-public/xen.h>
-
-/*
- * Assembler stubs for hyper-calls.
- */
-
-static inline int
-HYPERVISOR_set_trap_table(
- trap_info_t *table)
-{
- int ret;
- unsigned long ignore;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ignore)
- : "0" (__HYPERVISOR_set_trap_table), "1" (table)
- : "memory" );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_mmu_update(
- mmu_update_t *req, int count, int *success_count, domid_t domid)
-{
- int ret;
- unsigned long ign1, ign2, ign3, ign4;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign1), "=c" (ign2), "=d" (ign3), "=S" (ign4)
- : "0" (__HYPERVISOR_mmu_update), "1" (req), "2" (count),
- "3" (success_count), "4" (domid)
- : "memory" );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_mmuext_op(
- struct mmuext_op *op, int count, int *success_count, domid_t domid)
-{
- int ret;
- unsigned long ign1, ign2, ign3, ign4;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign1), "=c" (ign2), "=d" (ign3), "=S" (ign4)
- : "0" (__HYPERVISOR_mmuext_op), "1" (op), "2" (count),
- "3" (success_count), "4" (domid)
- : "memory" );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_set_gdt(
- unsigned long *frame_list, int entries)
-{
- int ret;
- unsigned long ign1, ign2;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign1), "=c" (ign2)
- : "0" (__HYPERVISOR_set_gdt), "1" (frame_list), "2" (entries)
- : "memory" );
-
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_stack_switch(
- unsigned long ss, unsigned long esp)
-{
- int ret;
- unsigned long ign1, ign2;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign1), "=c" (ign2)
- : "0" (__HYPERVISOR_stack_switch), "1" (ss), "2" (esp)
- : "memory" );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_set_callbacks(
- unsigned long event_selector, unsigned long event_address,
- unsigned long failsafe_selector, unsigned long failsafe_address)
-{
- int ret;
- unsigned long ign1, ign2, ign3, ign4;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign1), "=c" (ign2), "=d" (ign3), "=S" (ign4)
- : "0" (__HYPERVISOR_set_callbacks), "1" (event_selector),
- "2" (event_address), "3" (failsafe_selector), "4" (failsafe_address)
- : "memory" );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_fpu_taskswitch(
- int set)
-{
- int ret;
- unsigned long ign;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign)
- : "0" (__HYPERVISOR_fpu_taskswitch), "1" (set)
- : "memory" );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_yield(
- void)
-{
- int ret;
- unsigned long ign;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign)
- : "0" (__HYPERVISOR_sched_op), "1" (SCHEDOP_yield)
- : "memory" );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_block(
- void)
-{
- int ret;
- unsigned long ign1;
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign1)
- : "0" (__HYPERVISOR_sched_op), "1" (SCHEDOP_block)
- : "memory" );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_shutdown(
- void)
-{
- int ret;
- unsigned long ign1;
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign1)
- : "0" (__HYPERVISOR_sched_op),
- "1" (SCHEDOP_shutdown | (SHUTDOWN_poweroff << SCHEDOP_reasonshift))
- : "memory" );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_reboot(
- void)
-{
- int ret;
- unsigned long ign1;
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign1)
- : "0" (__HYPERVISOR_sched_op),
- "1" (SCHEDOP_shutdown | (SHUTDOWN_reboot << SCHEDOP_reasonshift))
- : "memory" );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_suspend(
- unsigned long srec)
-{
- int ret;
- unsigned long ign1, ign2;
-
- /* NB. On suspend, control software expects a suspend record in %esi. */
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign1), "=S" (ign2)
- : "0" (__HYPERVISOR_sched_op),
- "b" (SCHEDOP_shutdown | (SHUTDOWN_suspend << SCHEDOP_reasonshift)),
- "S" (srec) : "memory");
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_crash(
- void)
-{
- int ret;
- unsigned long ign1;
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign1)
- : "0" (__HYPERVISOR_sched_op),
- "1" (SCHEDOP_shutdown | (SHUTDOWN_crash << SCHEDOP_reasonshift))
- : "memory" );
-
- return ret;
-}
-
-static inline long
-HYPERVISOR_set_timer_op(
- u64 timeout)
-{
- int ret;
- unsigned long timeout_hi = (unsigned long)(timeout>>32);
- unsigned long timeout_lo = (unsigned long)timeout;
- unsigned long ign1, ign2;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign1), "=c" (ign2)
- : "0" (__HYPERVISOR_set_timer_op), "b" (timeout_lo), "c" (timeout_hi)
- : "memory");
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_dom0_op(
- dom0_op_t *dom0_op)
-{
- int ret;
- unsigned long ign1;
-
- dom0_op->interface_version = DOM0_INTERFACE_VERSION;
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign1)
- : "0" (__HYPERVISOR_dom0_op), "1" (dom0_op)
- : "memory");
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_set_debugreg(
- int reg, unsigned long value)
-{
- int ret;
- unsigned long ign1, ign2;
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign1), "=c" (ign2)
- : "0" (__HYPERVISOR_set_debugreg), "1" (reg), "2" (value)
- : "memory" );
-
- return ret;
-}
-
-static inline unsigned long
-HYPERVISOR_get_debugreg(
- int reg)
-{
- unsigned long ret;
- unsigned long ign;
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign)
- : "0" (__HYPERVISOR_get_debugreg), "1" (reg)
- : "memory" );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_update_descriptor(
- unsigned long ma, unsigned long word1, unsigned long word2)
-{
- int ret;
- unsigned long ign1, ign2, ign3;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign1), "=c" (ign2), "=d" (ign3)
- : "0" (__HYPERVISOR_update_descriptor), "1" (ma), "2" (word1),
- "3" (word2)
- : "memory" );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_dom_mem_op(
- unsigned int op, unsigned long *extent_list,
- unsigned long nr_extents, unsigned int extent_order)
-{
- int ret;
- unsigned long ign1, ign2, ign3, ign4, ign5;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign1), "=c" (ign2), "=d" (ign3), "=S" (ign4),
- "=D" (ign5)
- : "0" (__HYPERVISOR_dom_mem_op), "1" (op), "2" (extent_list),
- "3" (nr_extents), "4" (extent_order), "5" (DOMID_SELF)
- : "memory" );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_multicall(
- void *call_list, int nr_calls)
-{
- int ret;
- unsigned long ign1, ign2;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign1), "=c" (ign2)
- : "0" (__HYPERVISOR_multicall), "1" (call_list), "2" (nr_calls)
- : "memory" );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_update_va_mapping(
- unsigned long va, pte_t new_val, unsigned long flags)
-{
- int ret;
- unsigned long ign1, ign2, ign3, ign4;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign1), "=c" (ign2), "=d" (ign3), "=S" (ign4)
- : "0" (__HYPERVISOR_update_va_mapping),
- "1" (va), "2" ((new_val).pte_low),
-#ifdef CONFIG_X86_PAE
- "3" ((new_val).pte_high),
-#else
- "3" (0),
-#endif
- "4" (flags)
- : "memory" );
-
- if ( unlikely(ret < 0) )
- {
- printk(KERN_ALERT "Failed update VA mapping: %08lx, %08lx, %08lx\n",
- va, (new_val).pte_low, flags);
- BUG();
- }
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_event_channel_op(
- void *op)
-{
- int ret;
- unsigned long ignore;
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ignore)
- : "0" (__HYPERVISOR_event_channel_op), "1" (op)
- : "memory" );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_xen_version(
- int cmd)
-{
- int ret;
- unsigned long ignore;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ignore)
- : "0" (__HYPERVISOR_xen_version), "1" (cmd)
- : "memory" );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_console_io(
- int cmd, int count, char *str)
-{
- int ret;
- unsigned long ign1, ign2, ign3;
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign1), "=c" (ign2), "=d" (ign3)
- : "0" (__HYPERVISOR_console_io), "1" (cmd), "2" (count), "3" (str)
- : "memory" );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_physdev_op(
- void *physdev_op)
-{
- int ret;
- unsigned long ign;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign)
- : "0" (__HYPERVISOR_physdev_op), "1" (physdev_op)
- : "memory" );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_grant_table_op(
- unsigned int cmd, void *uop, unsigned int count)
-{
- int ret;
- unsigned long ign1, ign2, ign3;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign1), "=c" (ign2), "=d" (ign3)
- : "0" (__HYPERVISOR_grant_table_op), "1" (cmd), "2" (uop), "3" (count)
- : "memory" );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_update_va_mapping_otherdomain(
- unsigned long va, pte_t new_val, unsigned long flags, domid_t domid)
-{
- int ret;
- unsigned long ign1, ign2, ign3, ign4, ign5;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign1), "=c" (ign2), "=d" (ign3),
- "=S" (ign4), "=D" (ign5)
- : "0" (__HYPERVISOR_update_va_mapping_otherdomain),
- "1" (va), "2" ((new_val).pte_low),
-#ifdef CONFIG_X86_PAE
- "3" ((new_val).pte_high),
-#else
- "3" (0),
-#endif
- "4" (flags), "5" (domid) :
- "memory" );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_vm_assist(
- unsigned int cmd, unsigned int type)
-{
- int ret;
- unsigned long ign1, ign2;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign1), "=c" (ign2)
- : "0" (__HYPERVISOR_vm_assist), "1" (cmd), "2" (type)
- : "memory" );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_boot_vcpu(
- unsigned long vcpu, vcpu_guest_context_t *ctxt)
-{
- int ret;
- unsigned long ign1, ign2;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign1), "=c" (ign2)
- : "0" (__HYPERVISOR_boot_vcpu), "1" (vcpu), "2" (ctxt)
- : "memory");
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_vcpu_down(
- int vcpu)
-{
- int ret;
- unsigned long ign1;
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign1)
- : "0" (__HYPERVISOR_sched_op),
- "1" (SCHEDOP_vcpu_down | (vcpu << SCHEDOP_vcpushift))
- : "memory" );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_vcpu_up(
- int vcpu)
-{
- int ret;
- unsigned long ign1;
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret), "=b" (ign1)
- : "0" (__HYPERVISOR_sched_op),
- "1" (SCHEDOP_vcpu_up | (vcpu << SCHEDOP_vcpushift))
- : "memory" );
-
- return ret;
-}
-#endif /* __HYPERCALL_H__ */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/io.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/io.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,425 +0,0 @@
-#ifndef _ASM_IO_H
-#define _ASM_IO_H
-
-#include <linux/config.h>
-#include <linux/string.h>
-#include <linux/compiler.h>
-
-/*
- * This file contains the definitions for the x86 IO instructions
- * inb/inw/inl/outb/outw/outl and the "string versions" of the same
- * (insb/insw/insl/outsb/outsw/outsl). You can also use "pausing"
- * versions of the single-IO instructions (inb_p/inw_p/..).
- *
- * This file is not meant to be obfuscating: it's just complicated
- * to (a) handle it all in a way that makes gcc able to optimize it
- * as well as possible and (b) trying to avoid writing the same thing
- * over and over again with slight variations and possibly making a
- * mistake somewhere.
- */
-
-/*
- * Thanks to James van Artsdalen for a better timing-fix than
- * the two short jumps: using outb's to a nonexistent port seems
- * to guarantee better timings even on fast machines.
- *
- * On the other hand, I'd like to be sure of a non-existent port:
- * I feel a bit unsafe about using 0x80 (should be safe, though)
- *
- * Linus
- */
-
- /*
- * Bit simplified and optimized by Jan Hubicka
- * Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999.
- *
- * isa_memset_io, isa_memcpy_fromio, isa_memcpy_toio added,
- * isa_read[wl] and isa_write[wl] fixed
- * - Arnaldo Carvalho de Melo <acme@xxxxxxxxxxxxxxxx>
- */
-
-#define IO_SPACE_LIMIT 0xffff
-
-#define XQUAD_PORTIO_BASE 0xfe400000
-#define XQUAD_PORTIO_QUAD 0x40000 /* 256k per quad. */
-
-#ifdef __KERNEL__
-
-#include <asm-generic/iomap.h>
-
-#include <linux/vmalloc.h>
-#include <asm/fixmap.h>
-
-/**
- * virt_to_phys - map virtual addresses to physical
- * @address: address to remap
- *
- * The returned physical address is the physical (CPU) mapping for
- * the memory address given. It is only valid to use this function on
- * addresses directly mapped or allocated via kmalloc.
- *
- * This function does not give bus mappings for DMA transfers. In
- * almost all conceivable cases a device driver should not be using
- * this function
- */
-
-static inline unsigned long virt_to_phys(volatile void * address)
-{
- return __pa(address);
-}
-
-/**
- * phys_to_virt - map physical address to virtual
- * @address: address to remap
- *
- * The returned virtual address is a current CPU mapping for
- * the memory address given. It is only valid to use this function on
- * addresses that have a kernel mapping
- *
- * This function does not handle bus mappings for DMA transfers. In
- * almost all conceivable cases a device driver should not be using
- * this function
- */
-
-static inline void * phys_to_virt(unsigned long address)
-{
- return __va(address);
-}
-
-/*
- * Change "struct page" to physical address.
- */
-#define page_to_pseudophys(page) ((dma_addr_t)page_to_pfn(page) << PAGE_SHIFT)
-#define page_to_phys(page) (phys_to_machine(page_to_pseudophys(page)))
-
-#define bio_to_pseudophys(bio) (page_to_pseudophys(bio_page((bio))) + \
- (unsigned long) bio_offset((bio)))
-#define bvec_to_pseudophys(bv) (page_to_pseudophys((bv)->bv_page) + \
- (unsigned long) (bv)->bv_offset)
-
-#define BIOVEC_PHYS_MERGEABLE(vec1, vec2) \
- (((bvec_to_phys((vec1)) + (vec1)->bv_len) == bvec_to_phys((vec2))) && \
- ((bvec_to_pseudophys((vec1)) + (vec1)->bv_len) == \
- bvec_to_pseudophys((vec2))))
-
-extern void __iomem * __ioremap(unsigned long offset, unsigned long size,
unsigned long flags);
-
-/**
- * ioremap - map bus memory into CPU space
- * @offset: bus address of the memory
- * @size: size of the resource to map
- *
- * ioremap performs a platform specific sequence of operations to
- * make bus memory CPU accessible via the readb/readw/readl/writeb/
- * writew/writel functions and the other mmio helpers. The returned
- * address is not guaranteed to be usable directly as a virtual
- * address.
- */
-
-static inline void __iomem * ioremap(unsigned long offset, unsigned long size)
-{
- return __ioremap(offset, size, 0);
-}
-
-extern void __iomem * ioremap_nocache(unsigned long offset, unsigned long
size);
-extern void iounmap(volatile void __iomem *addr);
-
-/*
- * bt_ioremap() and bt_iounmap() are for temporary early boot-time
- * mappings, before the real ioremap() is functional.
- * A boot-time mapping is currently limited to at most 16 pages.
- */
-extern void *bt_ioremap(unsigned long offset, unsigned long size);
-extern void bt_iounmap(void *addr, unsigned long size);
-
-/*
- * ISA I/O bus memory addresses are 1:1 with the physical address.
- */
-#define isa_virt_to_bus(_x) isa_virt_to_bus_is_UNSUPPORTED->x
-#define isa_page_to_bus(_x) isa_page_to_bus_is_UNSUPPORTED->x
-#ifdef CONFIG_XEN_PHYSDEV_ACCESS
-#define isa_bus_to_virt(_x) (void *)(__fix_to_virt(FIX_ISAMAP_BEGIN) + (_x))
-#else
-#define isa_bus_to_virt(_x) isa_bus_to_virt_needs_PRIVILEGED_BUILD
-#endif
-
-/*
- * However PCI ones are not necessarily 1:1 and therefore these interfaces
- * are forbidden in portable PCI drivers.
- *
- * Allow them on x86 for legacy drivers, though.
- */
-#define virt_to_bus(_x) phys_to_machine(__pa(_x))
-#define bus_to_virt(_x) __va(machine_to_phys(_x))
-
-/*
- * readX/writeX() are used to access memory mapped devices. On some
- * architectures the memory mapped IO stuff needs to be accessed
- * differently. On the x86 architecture, we just read/write the
- * memory location directly.
- */
-
-static inline unsigned char readb(const volatile void __iomem *addr)
-{
- return *(volatile unsigned char __force *) addr;
-}
-static inline unsigned short readw(const volatile void __iomem *addr)
-{
- return *(volatile unsigned short __force *) addr;
-}
-static inline unsigned int readl(const volatile void __iomem *addr)
-{
- return *(volatile unsigned int __force *) addr;
-}
-#define readb_relaxed(addr) readb(addr)
-#define readw_relaxed(addr) readw(addr)
-#define readl_relaxed(addr) readl(addr)
-#define __raw_readb readb
-#define __raw_readw readw
-#define __raw_readl readl
-
-static inline void writeb(unsigned char b, volatile void __iomem *addr)
-{
- *(volatile unsigned char __force *) addr = b;
-}
-static inline void writew(unsigned short b, volatile void __iomem *addr)
-{
- *(volatile unsigned short __force *) addr = b;
-}
-static inline void writel(unsigned int b, volatile void __iomem *addr)
-{
- *(volatile unsigned int __force *) addr = b;
-}
-#define __raw_writeb writeb
-#define __raw_writew writew
-#define __raw_writel writel
-
-#define mmiowb()
-
-static inline void memset_io(volatile void __iomem *addr, unsigned char val,
int count)
-{
- memset((void __force *) addr, val, count);
-}
-static inline void memcpy_fromio(void *dst, const volatile void __iomem *src,
int count)
-{
- __memcpy(dst, (void __force *) src, count);
-}
-static inline void memcpy_toio(volatile void __iomem *dst, const void *src,
int count)
-{
- __memcpy((void __force *) dst, src, count);
-}
-
-/*
- * ISA space is 'always mapped' on a typical x86 system, no need to
- * explicitly ioremap() it. The fact that the ISA IO space is mapped
- * to PAGE_OFFSET is pure coincidence - it does not mean ISA values
- * are physical addresses. The following constant pointer can be
- * used as the IO-area pointer (it can be iounmapped as well, so the
- * analogy with PCI is quite large):
- */
-#define __ISA_IO_base ((char __iomem *)(PAGE_OFFSET))
-
-#define isa_readb(a) readb(__ISA_IO_base + (a))
-#define isa_readw(a) readw(__ISA_IO_base + (a))
-#define isa_readl(a) readl(__ISA_IO_base + (a))
-#define isa_writeb(b,a) writeb(b,__ISA_IO_base + (a))
-#define isa_writew(w,a) writew(w,__ISA_IO_base + (a))
-#define isa_writel(l,a) writel(l,__ISA_IO_base + (a))
-#define isa_memset_io(a,b,c) memset_io(__ISA_IO_base + (a),(b),(c))
-#define isa_memcpy_fromio(a,b,c) memcpy_fromio((a),__ISA_IO_base +
(b),(c))
-#define isa_memcpy_toio(a,b,c) memcpy_toio(__ISA_IO_base + (a),(b),(c))
-
-
-/*
- * Again, i386 does not require mem IO specific function.
- */
-
-#define eth_io_copy_and_sum(a,b,c,d) eth_copy_and_sum((a),(void
__force *)(b),(c),(d))
-#define isa_eth_io_copy_and_sum(a,b,c,d) eth_copy_and_sum((a),(void
__force *)(__ISA_IO_base + (b)),(c),(d))
-
-/**
- * check_signature - find BIOS signatures
- * @io_addr: mmio address to check
- * @signature: signature block
- * @length: length of signature
- *
- * Perform a signature comparison with the mmio address io_addr. This
- * address should have been obtained by ioremap.
- * Returns 1 on a match.
- */
-
-static inline int check_signature(volatile void __iomem * io_addr,
- const unsigned char *signature, int length)
-{
- int retval = 0;
- do {
- if (readb(io_addr) != *signature)
- goto out;
- io_addr++;
- signature++;
- length--;
- } while (length);
- retval = 1;
-out:
- return retval;
-}
-
-/*
- * Cache management
- *
- * This needed for two cases
- * 1. Out of order aware processors
- * 2. Accidentally out of order processors (PPro errata #51)
- */
-
-#if defined(CONFIG_X86_OOSTORE) || defined(CONFIG_X86_PPRO_FENCE)
-
-static inline void flush_write_buffers(void)
-{
- __asm__ __volatile__ ("lock; addl $0,0(%%esp)": : :"memory");
-}
-
-#define dma_cache_inv(_start,_size) flush_write_buffers()
-#define dma_cache_wback(_start,_size) flush_write_buffers()
-#define dma_cache_wback_inv(_start,_size) flush_write_buffers()
-
-#else
-
-/* Nothing to do */
-
-#define dma_cache_inv(_start,_size) do { } while (0)
-#define dma_cache_wback(_start,_size) do { } while (0)
-#define dma_cache_wback_inv(_start,_size) do { } while (0)
-#define flush_write_buffers()
-
-#endif
-
-#endif /* __KERNEL__ */
-
-#ifdef SLOW_IO_BY_JUMPING
-#define __SLOW_DOWN_IO "jmp 1f; 1: jmp 1f; 1:"
-#elif defined(__UNSAFE_IO__)
-#define __SLOW_DOWN_IO "outb %%al,$0x80;"
-#else
-#define __SLOW_DOWN_IO "\n1: outb %%al,$0x80\n" \
- "2:\n" \
- ".section __ex_table,\"a\"\n\t" \
- ".align 4\n\t" \
- ".long 1b,2b\n" \
- ".previous"
-#endif
-
-static inline void slow_down_io(void) {
- __asm__ __volatile__(
- __SLOW_DOWN_IO
-#ifdef REALLY_SLOW_IO
- __SLOW_DOWN_IO __SLOW_DOWN_IO __SLOW_DOWN_IO
-#endif
- : : );
-}
-
-#ifdef CONFIG_X86_NUMAQ
-extern void *xquad_portio; /* Where the IO area was mapped */
-#define XQUAD_PORT_ADDR(port, quad) (xquad_portio + (XQUAD_PORTIO_QUAD*quad) +
port)
-#define __BUILDIO(bwl,bw,type) \
-static inline void out##bwl##_quad(unsigned type value, int port, int quad) { \
- if (xquad_portio) \
- write##bwl(value, XQUAD_PORT_ADDR(port, quad)); \
- else \
- out##bwl##_local(value, port); \
-} \
-static inline void out##bwl(unsigned type value, int port) { \
- out##bwl##_quad(value, port, 0); \
-} \
-static inline unsigned type in##bwl##_quad(int port, int quad) { \
- if (xquad_portio) \
- return read##bwl(XQUAD_PORT_ADDR(port, quad)); \
- else \
- return in##bwl##_local(port); \
-} \
-static inline unsigned type in##bwl(int port) { \
- return in##bwl##_quad(port, 0); \
-}
-#else
-#define __BUILDIO(bwl,bw,type) \
-static inline void out##bwl(unsigned type value, int port) { \
- out##bwl##_local(value, port); \
-} \
-static inline unsigned type in##bwl(int port) { \
- return in##bwl##_local(port); \
-}
-#endif
-
-
-#if __UNSAFE_IO__
-#define ____BUILDIO(bwl,bw,type) \
-static inline void out##bwl##_local(unsigned type value, int port) { \
- __asm__ __volatile__("out" #bwl " %" #bw "0, %w1" : : "a"(value),
"Nd"(port)); \
-} \
-static inline unsigned type in##bwl##_local(int port) { \
- unsigned type value; \
- __asm__ __volatile__("in" #bwl " %w1, %" #bw "0" : "=a"(value) :
"Nd"(port)); \
- return value; \
-}
-#else
-#define ____BUILDIO(bwl,bw,type) \
-static inline void out##bwl##_local(unsigned type value, int port) { \
- __asm__ __volatile__("1: out" #bwl " %" #bw "0, %w1\n" \
- "2:\n" \
- ".section __ex_table,\"a\"\n\t" \
- ".align 4\n\t" \
- ".long 1b,2b\n" \
- ".previous" : : "a"(value), "Nd"(port)); \
-} \
-static inline unsigned type in##bwl##_local(int port) { \
- unsigned type value; \
- __asm__ __volatile__("1:in" #bwl " %w1, %" #bw "0\n" \
- "2:\n" \
- ".section .fixup,\"ax\"\n" \
- "3: mov" #bwl " $~0,%" #bw "0\n\t" \
- "jmp 2b\n" \
- ".previous\n" \
- ".section __ex_table,\"a\"\n\t" \
- ".align 4\n\t" \
- ".long 1b,3b\n" \
- ".previous" : "=a"(value) : "Nd"(port)); \
- return value; \
-}
-#endif
-
-#define BUILDIO(bwl,bw,type) \
-____BUILDIO(bwl,bw,type) \
-static inline void out##bwl##_local_p(unsigned type value, int port) { \
- out##bwl##_local(value, port); \
- slow_down_io(); \
-} \
-static inline unsigned type in##bwl##_local_p(int port) { \
- unsigned type value = in##bwl##_local(port); \
- slow_down_io(); \
- return value; \
-} \
-__BUILDIO(bwl,bw,type) \
-static inline void out##bwl##_p(unsigned type value, int port) { \
- out##bwl(value, port); \
- slow_down_io(); \
-} \
-static inline unsigned type in##bwl##_p(int port) { \
- unsigned type value = in##bwl(port); \
- slow_down_io(); \
- return value; \
-} \
-static inline void outs##bwl(int port, const void *addr, unsigned long count)
{ \
- __asm__ __volatile__("rep; outs" #bwl : "+S"(addr), "+c"(count) :
"d"(port)); \
-} \
-static inline void ins##bwl(int port, void *addr, unsigned long count) { \
- __asm__ __volatile__("rep; ins" #bwl : "+D"(addr), "+c"(count) :
"d"(port)); \
-}
-
-BUILDIO(b,b,char)
-BUILDIO(w,w,short)
-BUILDIO(l,,int)
-
-/* We will be supplying our own /dev/mem implementation */
-#define ARCH_HAS_DEV_MEM
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/mach-xen/setup_arch_post.h
---
a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/mach-xen/setup_arch_post.h
Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,51 +0,0 @@
-/**
- * machine_specific_memory_setup - Hook for machine specific memory setup.
- *
- * Description:
- * This is included late in kernel/setup.c so that it can make
- * use of all of the static functions.
- **/
-
-static char * __init machine_specific_memory_setup(void)
-{
- char *who;
- unsigned long start_pfn, max_pfn;
-
- who = "Xen";
-
- /* In dom0, we have to start the fake e820 map above the first
- * 1MB, in other domains, it can start at 0. */
- if (xen_start_info.flags & SIF_INITDOMAIN)
- start_pfn = 0x100;
- else
- start_pfn = 0;
- max_pfn = xen_start_info.nr_pages;
-
- e820.nr_map = 0;
- add_memory_region(PFN_PHYS(start_pfn), PFN_PHYS(max_pfn) -
PFN_PHYS(start_pfn), E820_RAM);
-
- return who;
-}
-
-void __init machine_specific_modify_cpu_capabilities(struct cpuinfo_x86 *c)
-{
- clear_bit(X86_FEATURE_VME, c->x86_capability);
- clear_bit(X86_FEATURE_DE, c->x86_capability);
- clear_bit(X86_FEATURE_PSE, c->x86_capability);
- clear_bit(X86_FEATURE_PGE, c->x86_capability);
- clear_bit(X86_FEATURE_SEP, c->x86_capability);
- if (!(xen_start_info.flags & SIF_PRIVILEGED))
- clear_bit(X86_FEATURE_MTRR, c->x86_capability);
-}
-
-extern void hypervisor_callback(void);
-extern void failsafe_callback(void);
-
-static void __init machine_specific_arch_setup(void)
-{
- HYPERVISOR_set_callbacks(
- __KERNEL_CS, (unsigned long)hypervisor_callback,
- __KERNEL_CS, (unsigned long)failsafe_callback);
-
- machine_specific_modify_cpu_capabilities(&boot_cpu_data);
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/mach-xen/setup_arch_pre.h
---
a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/mach-xen/setup_arch_pre.h
Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,5 +0,0 @@
-/* Hook to call BIOS initialisation function */
-
-#define ARCH_SETUP machine_specific_arch_setup();
-
-static void __init machine_specific_arch_setup(void);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/mach-xen/smpboot_hooks.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/mach-xen/smpboot_hooks.h
Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,55 +0,0 @@
-/* two abstractions specific to kernel/smpboot.c, mainly to cater to visws
- * which needs to alter them. */
-
-static inline void smpboot_clear_io_apic_irqs(void)
-{
-#ifdef CONFIG_X86_IO_APIC
- io_apic_irqs = 0;
-#endif
-}
-
-static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip)
-{
-#if 1
- printk("smpboot_setup_warm_reset_vector\n");
-#else
- CMOS_WRITE(0xa, 0xf);
- local_flush_tlb();
- Dprintk("1.\n");
- *((volatile unsigned short *) TRAMPOLINE_HIGH) = start_eip >> 4;
- Dprintk("2.\n");
- *((volatile unsigned short *) TRAMPOLINE_LOW) = start_eip & 0xf;
- Dprintk("3.\n");
-#endif
-}
-
-static inline void smpboot_restore_warm_reset_vector(void)
-{
- /*
- * Install writable page 0 entry to set BIOS data area.
- */
- local_flush_tlb();
-
- /*
- * Paranoid: Set warm reset code and vector here back
- * to default values.
- */
- CMOS_WRITE(0, 0xf);
-
- *((volatile long *) phys_to_virt(0x467)) = 0;
-}
-
-static inline void smpboot_setup_io_apic(void)
-{
-#ifdef CONFIG_X86_IO_APIC
- /*
- * Here we can be sure that there is an IO-APIC in the system. Let's
- * go and set it up:
- */
- if (!skip_ioapic_setup && nr_ioapics)
- setup_IO_APIC();
-#endif
-}
-
-
-#define smp_found_config (HYPERVISOR_shared_info->n_vcpu > 1)
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/mmu.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/mmu.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,26 +0,0 @@
-#ifndef __i386_MMU_H
-#define __i386_MMU_H
-
-#include <asm/semaphore.h>
-/*
- * The i386 doesn't have a mmu context, but
- * we put the segment information here.
- *
- * cpu_vm_mask is used to optimize ldt flushing.
- */
-typedef struct {
- int size;
- struct semaphore sem;
- void *ldt;
- unsigned pinned:1;
- struct list_head unpinned;
-} mm_context_t;
-
-extern struct list_head mm_unpinned;
-extern spinlock_t mm_unpinned_lock;
-
-/* mm/memory.c:exit_mmap hook */
-extern void _arch_exit_mmap(struct mm_struct *mm);
-#define arch_exit_mmap(_mm) _arch_exit_mmap(_mm)
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/mmu_context.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/mmu_context.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,108 +0,0 @@
-#ifndef __I386_SCHED_H
-#define __I386_SCHED_H
-
-#include <linux/config.h>
-#include <asm/desc.h>
-#include <asm/atomic.h>
-#include <asm/pgalloc.h>
-#include <asm/tlbflush.h>
-
-/*
- * Used for LDT copy/destruction.
- */
-int init_new_context(struct task_struct *tsk, struct mm_struct *mm);
-void destroy_context(struct mm_struct *mm);
-
-
-static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct
*tsk)
-{
-#if 0 /* XEN: no lazy tlb */
- unsigned cpu = smp_processor_id();
- if (per_cpu(cpu_tlbstate, cpu).state == TLBSTATE_OK)
- per_cpu(cpu_tlbstate, cpu).state = TLBSTATE_LAZY;
-#endif
-}
-
-#define prepare_arch_switch(rq,next) __prepare_arch_switch()
-#define finish_arch_switch(rq, next) spin_unlock_irq(&(rq)->lock)
-#define task_running(rq, p) ((rq)->curr == (p))
-
-static inline void __prepare_arch_switch(void)
-{
- /*
- * Save away %fs and %gs. No need to save %es and %ds, as those
- * are always kernel segments while inside the kernel. Must
- * happen before reload of cr3/ldt (i.e., not in __switch_to).
- */
- __asm__ __volatile__ ( "movl %%fs,%0 ; movl %%gs,%1"
- : "=m" (*(int *)¤t->thread.fs),
- "=m" (*(int *)¤t->thread.gs));
- __asm__ __volatile__ ( "movl %0,%%fs ; movl %0,%%gs"
- : : "r" (0) );
-}
-
-extern void mm_pin(struct mm_struct *mm);
-extern void mm_unpin(struct mm_struct *mm);
-void mm_pin_all(void);
-
-static inline void switch_mm(struct mm_struct *prev,
- struct mm_struct *next,
- struct task_struct *tsk)
-{
- int cpu = smp_processor_id();
- struct mmuext_op _op[2], *op = _op;
-
- if (likely(prev != next)) {
- if (!next->context.pinned)
- mm_pin(next);
-
- /* stop flush ipis for the previous mm */
- cpu_clear(cpu, prev->cpu_vm_mask);
-#if 0 /* XEN: no lazy tlb */
- per_cpu(cpu_tlbstate, cpu).state = TLBSTATE_OK;
- per_cpu(cpu_tlbstate, cpu).active_mm = next;
-#endif
- cpu_set(cpu, next->cpu_vm_mask);
-
- /* Re-load page tables: load_cr3(next->pgd) */
- per_cpu(cur_pgd, cpu) = next->pgd;
- op->cmd = MMUEXT_NEW_BASEPTR;
- op->mfn = pfn_to_mfn(__pa(next->pgd) >> PAGE_SHIFT);
- op++;
-
- /*
- * load the LDT, if the LDT is different:
- */
- if (unlikely(prev->context.ldt != next->context.ldt)) {
- /* load_LDT_nolock(&next->context, cpu) */
- op->cmd = MMUEXT_SET_LDT;
- op->linear_addr = (unsigned long)next->context.ldt;
- op->nr_ents = next->context.size;
- op++;
- }
-
- BUG_ON(HYPERVISOR_mmuext_op(_op, op-_op, NULL, DOMID_SELF));
- }
-#if 0 /* XEN: no lazy tlb */
- else {
- per_cpu(cpu_tlbstate, cpu).state = TLBSTATE_OK;
- BUG_ON(per_cpu(cpu_tlbstate, cpu).active_mm != next);
-
- if (!cpu_test_and_set(cpu, next->cpu_vm_mask)) {
- /* We were in lazy tlb mode and leave_mm disabled
- * tlb flush IPI delivery. We must reload %cr3.
- */
- load_cr3(next->pgd);
- load_LDT_nolock(&next->context, cpu);
- }
- }
-#endif
-}
-
-#define deactivate_mm(tsk, mm) \
- asm("movl %0,%%fs ; movl %0,%%gs": :"r" (0))
-
-#define activate_mm(prev, next) \
- switch_mm((prev),(next),NULL)
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/page.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/page.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,203 +0,0 @@
-#ifndef _I386_PAGE_H
-#define _I386_PAGE_H
-
-/* PAGE_SHIFT determines the page size */
-#define PAGE_SHIFT 12
-#define PAGE_SIZE (1UL << PAGE_SHIFT)
-#define PAGE_MASK (~(PAGE_SIZE-1))
-
-#define LARGE_PAGE_MASK (~(LARGE_PAGE_SIZE-1))
-#define LARGE_PAGE_SIZE (1UL << PMD_SHIFT)
-
-#ifdef __KERNEL__
-#ifndef __ASSEMBLY__
-
-#include <linux/config.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <asm-xen/xen-public/xen.h>
-#include <asm-xen/foreign_page.h>
-
-#define arch_free_page(_page,_order) \
-({ int foreign = PageForeign(_page); \
- if (foreign) \
- (PageForeignDestructor(_page))(_page); \
- foreign; \
-})
-#define HAVE_ARCH_FREE_PAGE
-
-#ifdef CONFIG_XEN_SCRUB_PAGES
-#define scrub_pages(_p,_n) memset((void *)(_p), 0, (_n) << PAGE_SHIFT)
-#else
-#define scrub_pages(_p,_n) ((void)0)
-#endif
-
-#ifdef CONFIG_X86_USE_3DNOW
-
-#include <asm/mmx.h>
-
-#define clear_page(page) mmx_clear_page((void *)(page))
-#define copy_page(to,from) mmx_copy_page(to,from)
-
-#else
-
-#define alloc_zeroed_user_highpage(vma, vaddr) alloc_page_vma(GFP_HIGHUSER |
__GFP_ZERO, vma, vaddr)
-#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
-
-/*
- * On older X86 processors it's not a win to use MMX here it seems.
- * Maybe the K6-III ?
- */
-
-#define clear_page(page) memset((void *)(page), 0, PAGE_SIZE)
-#define copy_page(to,from) memcpy((void *)(to), (void *)(from), PAGE_SIZE)
-
-#endif
-
-#define clear_user_page(page, vaddr, pg) clear_page(page)
-#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
-
-/**** MACHINE <-> PHYSICAL CONVERSION MACROS ****/
-extern unsigned int *phys_to_machine_mapping;
-#define pfn_to_mfn(_pfn) ((unsigned long)(phys_to_machine_mapping[(_pfn)]))
-#define mfn_to_pfn(_mfn) ((unsigned long)(machine_to_phys_mapping[(_mfn)]))
-static inline unsigned long phys_to_machine(unsigned long phys)
-{
- unsigned long machine = pfn_to_mfn(phys >> PAGE_SHIFT);
- machine = (machine << PAGE_SHIFT) | (phys & ~PAGE_MASK);
- return machine;
-}
-static inline unsigned long machine_to_phys(unsigned long machine)
-{
- unsigned long phys = mfn_to_pfn(machine >> PAGE_SHIFT);
- phys = (phys << PAGE_SHIFT) | (machine & ~PAGE_MASK);
- return phys;
-}
-
-/*
- * These are used to make use of C type-checking..
- */
-extern int nx_enabled;
-#ifdef CONFIG_X86_PAE
-extern unsigned long long __supported_pte_mask;
-typedef struct { unsigned long pte_low, pte_high; } pte_t;
-typedef struct { unsigned long long pmd; } pmd_t;
-typedef struct { unsigned long long pgd; } pgd_t;
-typedef struct { unsigned long long pgprot; } pgprot_t;
-#define pmd_val(x) ((x).pmd)
-#define pte_val(x) ((x).pte_low | ((unsigned long long)(x).pte_high << 32))
-#define __pmd(x) ((pmd_t) { (x) } )
-#define HPAGE_SHIFT 21
-#else
-typedef struct { unsigned long pte_low; } pte_t;
-typedef struct { unsigned long pgd; } pgd_t;
-typedef struct { unsigned long pgprot; } pgprot_t;
-#define boot_pte_t pte_t /* or would you rather have a typedef */
-#define pte_val(x) (((x).pte_low & 1) ? machine_to_phys((x).pte_low) : \
- (x).pte_low)
-#define pte_val_ma(x) ((x).pte_low)
-#define HPAGE_SHIFT 22
-#endif
-#define PTE_MASK PAGE_MASK
-
-#ifdef CONFIG_HUGETLB_PAGE
-#define HPAGE_SIZE ((1UL) << HPAGE_SHIFT)
-#define HPAGE_MASK (~(HPAGE_SIZE - 1))
-#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
-#define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
-#endif
-
-
-static inline unsigned long pgd_val(pgd_t x)
-{
- unsigned long ret = x.pgd;
- if (ret) ret = machine_to_phys(ret);
- return ret;
-}
-#define pgprot_val(x) ((x).pgprot)
-
-#define __pte(x) ({ unsigned long _x = (x); \
- (((_x)&1) ? ((pte_t) {phys_to_machine(_x)}) : ((pte_t) {(_x)})); })
-#define __pte_ma(x) ((pte_t) { (x) } )
-#define __pgd(x) ({ unsigned long _x = (x); \
- (((_x)&1) ? ((pgd_t) {phys_to_machine(_x)}) : ((pgd_t) {(_x)})); })
-#define __pgprot(x) ((pgprot_t) { (x) } )
-
-#endif /* !__ASSEMBLY__ */
-
-/* to align the pointer to the (next) page boundary */
-#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
-
-/*
- * This handles the memory map.. We could make this a config
- * option, but too many people screw it up, and too few need
- * it.
- *
- * A __PAGE_OFFSET of 0xC0000000 means that the kernel has
- * a virtual address space of one gigabyte, which limits the
- * amount of physical memory you can use to about 950MB.
- *
- * If you want more physical memory than this then see the CONFIG_HIGHMEM4G
- * and CONFIG_HIGHMEM64G options in the kernel configuration.
- */
-
-#ifndef __ASSEMBLY__
-
-/*
- * This much address space is reserved for vmalloc() and iomap()
- * as well as fixmap mappings.
- */
-extern unsigned int __VMALLOC_RESERVE;
-
-/* Pure 2^n version of get_order */
-static __inline__ int get_order(unsigned long size)
-{
- int order;
-
- size = (size-1) >> (PAGE_SHIFT-1);
- order = -1;
- do {
- size >>= 1;
- order++;
- } while (size);
- return order;
-}
-
-extern int sysctl_legacy_va_layout;
-
-#endif /* __ASSEMBLY__ */
-
-#ifdef __ASSEMBLY__
-#define __PAGE_OFFSET (0xC0000000)
-#else
-#define __PAGE_OFFSET (0xC0000000UL)
-#endif
-
-
-#define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET)
-#define VMALLOC_RESERVE ((unsigned long)__VMALLOC_RESERVE)
-#define MAXMEM
(HYPERVISOR_VIRT_START-__PAGE_OFFSET-__VMALLOC_RESERVE)
-#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET)
-#define __va(x) ((void *)((unsigned
long)(x)+PAGE_OFFSET))
-#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
-#ifndef CONFIG_DISCONTIGMEM
-#define pfn_to_page(pfn) (mem_map + (pfn))
-#define page_to_pfn(page) ((unsigned long)((page) - mem_map))
-#define pfn_valid(pfn) ((pfn) < max_mapnr)
-#endif /* !CONFIG_DISCONTIGMEM */
-#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
-
-#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
-
-#define VM_DATA_DEFAULT_FLAGS \
- (VM_READ | VM_WRITE | \
- ((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
-/* VIRT <-> MACHINE conversion */
-#define virt_to_machine(_a) (phys_to_machine(__pa(_a)))
-#define machine_to_virt(_m) (__va(machine_to_phys(_m)))
-
-#endif /* __KERNEL__ */
-
-#endif /* _I386_PAGE_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/param.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/param.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,23 +0,0 @@
-#ifndef _ASMi386_PARAM_H
-#define _ASMi386_PARAM_H
-
-#ifdef __KERNEL__
-# define HZ 100 /* Internal kernel timer frequency */
-# define USER_HZ 100 /* .. some user interfaces are in
"ticks" */
-# define CLOCKS_PER_SEC (USER_HZ) /* like times() */
-#endif
-
-#ifndef HZ
-#define HZ 100
-#endif
-
-#define EXEC_PAGESIZE 4096
-
-#ifndef NOGROUP
-#define NOGROUP (-1)
-#endif
-
-#define MAXHOSTNAMELEN 64 /* max length of hostname */
-#define COMMAND_LINE_SIZE 256
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/pci.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/pci.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,117 +0,0 @@
-#ifndef __i386_PCI_H
-#define __i386_PCI_H
-
-#include <linux/config.h>
-
-#ifdef __KERNEL__
-#include <linux/mm.h> /* for struct page */
-
-/* Can be used to override the logic in pci_scan_bus for skipping
- already-configured bus numbers - to be used for buggy BIOSes
- or architectures with incomplete PCI setup by the loader */
-
-#ifdef CONFIG_PCI
-extern unsigned int pcibios_assign_all_busses(void);
-#else
-#define pcibios_assign_all_busses() 0
-#endif
-#define pcibios_scan_all_fns(a, b) 0
-
-extern unsigned long pci_mem_start;
-#define PCIBIOS_MIN_IO 0x1000
-#define PCIBIOS_MIN_MEM (pci_mem_start)
-
-#define PCIBIOS_MIN_CARDBUS_IO 0x4000
-
-void pcibios_config_init(void);
-struct pci_bus * pcibios_scan_root(int bus);
-
-void pcibios_set_master(struct pci_dev *dev);
-void pcibios_penalize_isa_irq(int irq);
-struct irq_routing_table *pcibios_get_irq_routing_table(void);
-int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
-
-/* Dynamic DMA mapping stuff.
- * i386 has everything mapped statically.
- */
-
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <asm/scatterlist.h>
-#include <linux/string.h>
-#include <asm/io.h>
-
-struct pci_dev;
-
-/* The PCI address space does equal the physical memory
- * address space. The networking and block device layers use
- * this boolean for bounce buffer decisions.
- */
-#define PCI_DMA_BUS_IS_PHYS (1)
-
-/* pci_unmap_{page,single} is a nop so... */
-#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
-#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
-#define pci_unmap_addr(PTR, ADDR_NAME) (0)
-#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
-#define pci_unmap_len(PTR, LEN_NAME) (0)
-#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
-
-/* This is always fine. */
-#define pci_dac_dma_supported(pci_dev, mask) (1)
-
-static inline dma64_addr_t
-pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page, unsigned long
offset, int direction)
-{
- return ((dma64_addr_t) page_to_phys(page) +
- (dma64_addr_t) offset);
-}
-
-static inline struct page *
-pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr)
-{
- return pfn_to_page(dma_addr >> PAGE_SHIFT);
-}
-
-static inline unsigned long
-pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr)
-{
- return (dma_addr & ~PAGE_MASK);
-}
-
-static inline void
-pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev, dma64_addr_t dma_addr,
size_t len, int direction)
-{
-}
-
-static inline void
-pci_dac_dma_sync_single_for_device(struct pci_dev *pdev, dma64_addr_t
dma_addr, size_t len, int direction)
-{
- flush_write_buffers();
-}
-
-#define HAVE_PCI_MMAP
-extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
- enum pci_mmap_state mmap_state, int
write_combine);
-
-
-static inline void pcibios_add_platform_entries(struct pci_dev *dev)
-{
-}
-
-#endif /* __KERNEL__ */
-
-/* implement the pci_ DMA API in terms of the generic device dma_ one */
-#include <asm-generic/pci-dma-compat.h>
-
-/* generic pci stuff */
-#include <asm-generic/pci.h>
-
-/* On Xen we have to scan all functions since Xen hides bridges from
- * us. If a bridge is at fn=0 and that slot has a multifunction
- * device, we won't find the additional devices without scanning all
- * functions. */
-#undef pcibios_scan_all_fns
-#define pcibios_scan_all_fns(a, b) 1
-
-#endif /* __i386_PCI_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/pgalloc.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/pgalloc.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,62 +0,0 @@
-#ifndef _I386_PGALLOC_H
-#define _I386_PGALLOC_H
-
-#include <linux/config.h>
-#include <asm/processor.h>
-#include <asm/fixmap.h>
-#include <linux/threads.h>
-#include <linux/mm.h> /* for struct page */
-#include <asm/io.h> /* for phys_to_virt and page_to_pseudophys */
-
-#define pmd_populate_kernel(mm, pmd, pte) \
- set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))
-
-#define pmd_populate(mm, pmd, pte) \
-do { \
- if (unlikely((mm)->context.pinned)) { \
- if (!PageHighMem(pte)) \
- HYPERVISOR_update_va_mapping( \
- (unsigned long)__va(page_to_pfn(pte)<<PAGE_SHIFT),\
- pfn_pte(page_to_pfn(pte), PAGE_KERNEL_RO), 0);\
- set_pmd(pmd, __pmd(_PAGE_TABLE + \
- ((unsigned long long)page_to_pfn(pte) << \
- (unsigned long long) PAGE_SHIFT))); \
- } else { \
- *(pmd) = __pmd(_PAGE_TABLE + \
- ((unsigned long long)page_to_pfn(pte) << \
- (unsigned long long) PAGE_SHIFT)); \
- } \
-} while (0)
-
-/*
- * Allocate and free page tables.
- */
-extern pgd_t *pgd_alloc(struct mm_struct *);
-extern void pgd_free(pgd_t *pgd);
-
-extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long);
-extern struct page *pte_alloc_one(struct mm_struct *, unsigned long);
-
-static inline void pte_free_kernel(pte_t *pte)
-{
- free_page((unsigned long)pte);
- make_page_writable(pte);
-}
-
-extern void pte_free(struct page *pte);
-
-#define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
-
-#ifdef CONFIG_X86_PAE
-/*
- * In the PAE case we free the pmds as part of the pgd.
- */
-#define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); })
-#define pmd_free(x) do { } while (0)
-#define __pmd_free_tlb(tlb,x) do { } while (0)
-#define pud_populate(mm, pmd, pte) BUG()
-#endif
-
-#define check_pgt_cache() do { } while (0)
-
-#endif /* _I386_PGALLOC_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/pgtable-2level-defs.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/pgtable-2level-defs.h
Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,19 +0,0 @@
-#ifndef _I386_PGTABLE_2LEVEL_DEFS_H
-#define _I386_PGTABLE_2LEVEL_DEFS_H
-
-/*
- * traditional i386 two-level paging structure:
- */
-
-#define PGDIR_SHIFT 22
-#define PTRS_PER_PGD 1024
-#define PTRS_PER_PGD_NO_HV (HYPERVISOR_VIRT_START >> PGDIR_SHIFT)
-
-/*
- * the i386 is two-level, so we don't really have any
- * PMD directory physically.
- */
-
-#define PTRS_PER_PTE 1024
-
-#endif /* _I386_PGTABLE_2LEVEL_DEFS_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/pgtable-2level.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/pgtable-2level.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,106 +0,0 @@
-#ifndef _I386_PGTABLE_2LEVEL_H
-#define _I386_PGTABLE_2LEVEL_H
-
-#include <asm-generic/pgtable-nopmd.h>
-
-#define pte_ERROR(e) \
- printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, (e).pte_low)
-#define pgd_ERROR(e) \
- printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))
-
-/*
- * Certain architectures need to do special things when PTEs
- * within a page table are directly modified. Thus, the following
- * hook is made available.
- */
-#define set_pte(pteptr, pteval) (*(pteptr) = pteval)
-#define set_pte_atomic(pteptr, pteval) set_pte(pteptr,pteval)
-
-#ifndef CONFIG_XEN_SHADOW_MODE
-#define set_pmd(pmdptr, pmdval) xen_l2_entry_update((pmdptr), (pmdval))
-#else
-#define set_pmd(pmdptr, pmdval) (*(pmdptr) = (pmdval))
-#endif
-
-#define ptep_get_and_clear(xp) __pte_ma(xchg(&(xp)->pte_low, 0))
-#define pte_same(a, b) ((a).pte_low == (b).pte_low)
-/*
- * We detect special mappings in one of two ways:
- * 1. If the MFN is an I/O page then Xen will set the m2p entry
- * to be outside our maximum possible pseudophys range.
- * 2. If the MFN belongs to a different domain then we will certainly
- * not have MFN in our p2m table. Conversely, if the page is ours,
- * then we'll have p2m(m2p(MFN))==MFN.
- * If we detect a special mapping then it doesn't have a 'struct page'.
- * We force !pfn_valid() by returning an out-of-range pointer.
- *
- * NB. These checks require that, for any MFN that is not in our reservation,
- * there is no PFN such that p2m(PFN) == MFN. Otherwise we can get confused if
- * we are foreign-mapping the MFN, and the other domain as m2p(MFN) == PFN.
- * Yikes! Various places must poke in INVALID_P2M_ENTRY for safety.
- *
- * NB2. When deliberately mapping foreign pages into the p2m table, you *must*
- * use FOREIGN_FRAME(). This will cause pte_pfn() to choke on it, as we
- * require. In all the cases we care about, the high bit gets shifted out
- * (e.g., phys_to_machine()) so behaviour there is correct.
- */
-#define INVALID_P2M_ENTRY (~0U)
-#define FOREIGN_FRAME(_m) ((_m) | (1UL<<((sizeof(unsigned long)*8)-1)))
-#define pte_mfn(_pte) ((_pte).pte_low >> PAGE_SHIFT)
-#define pte_pfn(_pte) \
-({ \
- unsigned long mfn = pte_mfn(_pte); \
- unsigned long pfn = mfn_to_pfn(mfn); \
- if ((pfn >= max_mapnr) || (pfn_to_mfn(pfn) != mfn)) \
- pfn = max_mapnr; /* special: force !pfn_valid() */ \
- pfn; \
-})
-
-#define pte_page(_pte) pfn_to_page(pte_pfn(_pte))
-
-#define pte_none(x) (!(x).pte_low)
-#define pfn_pte(pfn, prot) __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
-#define pfn_pte_ma(pfn, prot) __pte_ma(((pfn) << PAGE_SHIFT) |
pgprot_val(prot))
-#define pfn_pmd(pfn, prot) __pmd(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
-
-#define pmd_page(pmd) (pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT))
-
-#define pmd_page_kernel(pmd) \
-((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
-
-/*
- * All present user pages are user-executable:
- */
-static inline int pte_exec(pte_t pte)
-{
- return pte_user(pte);
-}
-
-/*
- * All present pages are kernel-executable:
- */
-static inline int pte_exec_kernel(pte_t pte)
-{
- return 1;
-}
-
-/*
- * Bits 0, 6 and 7 are taken, split up the 29 bits of offset
- * into this range:
- */
-#define PTE_FILE_MAX_BITS 29
-
-#define pte_to_pgoff(pte) \
- ((((pte).pte_low >> 1) & 0x1f ) + (((pte).pte_low >> 8) << 5 ))
-
-#define pgoff_to_pte(off) \
- ((pte_t) { (((off) & 0x1f) << 1) + (((off) >> 5) << 8) + _PAGE_FILE })
-
-/* Encode and de-code a swap entry */
-#define __swp_type(x) (((x).val >> 1) & 0x1f)
-#define __swp_offset(x) ((x).val >> 8)
-#define __swp_entry(type, offset) ((swp_entry_t) { ((type) << 1) |
((offset) << 8) })
-#define __pte_to_swp_entry(pte) ((swp_entry_t) { (pte).pte_low
})
-#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
-
-#endif /* _I386_PGTABLE_2LEVEL_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/pgtable.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/pgtable.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,494 +0,0 @@
-#ifndef _I386_PGTABLE_H
-#define _I386_PGTABLE_H
-
-#include <linux/config.h>
-#include <asm-xen/hypervisor.h>
-
-/*
- * The Linux memory management assumes a three-level page table setup. On
- * the i386, we use that, but "fold" the mid level into the top-level page
- * table, so that we physically have the same two-level page table as the
- * i386 mmu expects.
- *
- * This file contains the functions and defines necessary to modify and use
- * the i386 page table tree.
- */
-#ifndef __ASSEMBLY__
-#include <asm/processor.h>
-#include <asm/fixmap.h>
-#include <linux/threads.h>
-
-#ifndef _I386_BITOPS_H
-#include <asm/bitops.h>
-#endif
-
-#include <linux/slab.h>
-#include <linux/list.h>
-#include <linux/spinlock.h>
-
-/*
- * ZERO_PAGE is a global shared page that is always zero: used
- * for zero-mapped memory areas etc..
- */
-#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
-extern unsigned long empty_zero_page[1024];
-extern pgd_t swapper_pg_dir[1024];
-extern kmem_cache_t *pgd_cache;
-extern kmem_cache_t *pmd_cache;
-extern spinlock_t pgd_lock;
-extern struct page *pgd_list;
-
-void pmd_ctor(void *, kmem_cache_t *, unsigned long);
-void pgd_ctor(void *, kmem_cache_t *, unsigned long);
-void pgd_dtor(void *, kmem_cache_t *, unsigned long);
-void pgtable_cache_init(void);
-void paging_init(void);
-
-/*
- * The Linux x86 paging architecture is 'compile-time dual-mode', it
- * implements both the traditional 2-level x86 page tables and the
- * newer 3-level PAE-mode page tables.
- */
-#ifdef CONFIG_X86_PAE
-# include <asm/pgtable-3level-defs.h>
-# define PMD_SIZE (1UL << PMD_SHIFT)
-# define PMD_MASK (~(PMD_SIZE-1))
-#else
-# include <asm/pgtable-2level-defs.h>
-#endif
-
-#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
-#define PGDIR_MASK (~(PGDIR_SIZE-1))
-
-#define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE)
-#define FIRST_USER_PGD_NR 0
-
-#define USER_PGD_PTRS (PAGE_OFFSET >> PGDIR_SHIFT)
-#define KERNEL_PGD_PTRS (PTRS_PER_PGD-USER_PGD_PTRS)
-
-#define TWOLEVEL_PGDIR_SHIFT 22
-#define BOOT_USER_PGD_PTRS (__PAGE_OFFSET >> TWOLEVEL_PGDIR_SHIFT)
-#define BOOT_KERNEL_PGD_PTRS (1024-BOOT_USER_PGD_PTRS)
-
-/* Just any arbitrary offset to the start of the vmalloc VM area: the
- * current 8MB value just means that there will be a 8MB "hole" after the
- * physical memory until the kernel virtual memory starts. That means that
- * any out-of-bounds memory accesses will hopefully be caught.
- * The vmalloc() routines leaves a hole of 4kB between each vmalloced
- * area for the same reason. ;)
- */
-#define VMALLOC_OFFSET (8*1024*1024)
-#define VMALLOC_START (((unsigned long) high_memory + vmalloc_earlyreserve + \
- 2*VMALLOC_OFFSET-1) & ~(VMALLOC_OFFSET-1))
-#ifdef CONFIG_HIGHMEM
-# define VMALLOC_END (PKMAP_BASE-2*PAGE_SIZE)
-#else
-# define VMALLOC_END (FIXADDR_START-2*PAGE_SIZE)
-#endif
-
-/*
- * The 4MB page is guessing.. Detailed in the infamous "Chapter H"
- * of the Pentium details, but assuming intel did the straightforward
- * thing, this bit set in the page directory entry just means that
- * the page directory entry points directly to a 4MB-aligned block of
- * memory.
- */
-#define _PAGE_BIT_PRESENT 0
-#define _PAGE_BIT_RW 1
-#define _PAGE_BIT_USER 2
-#define _PAGE_BIT_PWT 3
-#define _PAGE_BIT_PCD 4
-#define _PAGE_BIT_ACCESSED 5
-#define _PAGE_BIT_DIRTY 6
-#define _PAGE_BIT_PSE 7 /* 4 MB (or 2MB) page, Pentium+, if
present.. */
-#define _PAGE_BIT_GLOBAL 8 /* Global TLB entry PPro+ */
-#define _PAGE_BIT_UNUSED1 9 /* available for programmer */
-#define _PAGE_BIT_UNUSED2 10
-#define _PAGE_BIT_UNUSED3 11
-#define _PAGE_BIT_NX 63
-
-#define _PAGE_PRESENT 0x001
-#define _PAGE_RW 0x002
-#define _PAGE_USER 0x004
-#define _PAGE_PWT 0x008
-#define _PAGE_PCD 0x010
-#define _PAGE_ACCESSED 0x020
-#define _PAGE_DIRTY 0x040
-#define _PAGE_PSE 0x080 /* 4 MB (or 2MB) page, Pentium+, if present.. */
-#define _PAGE_GLOBAL 0x100 /* Global TLB entry PPro+ */
-#define _PAGE_UNUSED1 0x200 /* available for programmer */
-#define _PAGE_UNUSED2 0x400
-#define _PAGE_UNUSED3 0x800
-
-#define _PAGE_FILE 0x040 /* set:pagecache unset:swap */
-#define _PAGE_PROTNONE 0x080 /* If not present */
-#ifdef CONFIG_X86_PAE
-#define _PAGE_NX (1ULL<<_PAGE_BIT_NX)
-#else
-#define _PAGE_NX 0
-#endif
-
-#define _PAGE_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED
| _PAGE_DIRTY)
-#define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED |
_PAGE_DIRTY)
-#define _PAGE_CHG_MASK (PTE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
-
-#define PAGE_NONE \
- __pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED)
-#define PAGE_SHARED \
- __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED)
-
-#define PAGE_SHARED_EXEC \
- __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED)
-#define PAGE_COPY_NOEXEC \
- __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX)
-#define PAGE_COPY_EXEC \
- __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
-#define PAGE_COPY \
- PAGE_COPY_NOEXEC
-#define PAGE_READONLY \
- __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX)
-#define PAGE_READONLY_EXEC \
- __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
-
-#define _PAGE_KERNEL \
- (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_NX)
-#define _PAGE_KERNEL_EXEC \
- (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED)
-
-extern unsigned long long __PAGE_KERNEL, __PAGE_KERNEL_EXEC;
-#define __PAGE_KERNEL_RO (__PAGE_KERNEL & ~_PAGE_RW)
-#define __PAGE_KERNEL_NOCACHE (__PAGE_KERNEL | _PAGE_PCD)
-#define __PAGE_KERNEL_LARGE (__PAGE_KERNEL | _PAGE_PSE)
-#define __PAGE_KERNEL_LARGE_EXEC (__PAGE_KERNEL_EXEC | _PAGE_PSE)
-
-#define PAGE_KERNEL __pgprot(__PAGE_KERNEL)
-#define PAGE_KERNEL_RO __pgprot(__PAGE_KERNEL_RO)
-#define PAGE_KERNEL_EXEC __pgprot(__PAGE_KERNEL_EXEC)
-#define PAGE_KERNEL_NOCACHE __pgprot(__PAGE_KERNEL_NOCACHE)
-#define PAGE_KERNEL_LARGE __pgprot(__PAGE_KERNEL_LARGE)
-#define PAGE_KERNEL_LARGE_EXEC __pgprot(__PAGE_KERNEL_LARGE_EXEC)
-
-/*
- * The i386 can't do page protection for execute, and considers that
- * the same are read. Also, write permissions imply read permissions.
- * This is the closest we can get..
- */
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_READONLY_EXEC
-#define __P101 PAGE_READONLY_EXEC
-#define __P110 PAGE_COPY_EXEC
-#define __P111 PAGE_COPY_EXEC
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY_EXEC
-#define __S101 PAGE_READONLY_EXEC
-#define __S110 PAGE_SHARED_EXEC
-#define __S111 PAGE_SHARED_EXEC
-
-/*
- * Define this if things work differently on an i386 and an i486:
- * it will (on an i486) warn about kernel memory accesses that are
- * done without a 'verify_area(VERIFY_WRITE,..)'
- */
-#undef TEST_VERIFY_AREA
-
-/* The boot page tables (all created as a single array) */
-extern unsigned long pg0[];
-
-#define pte_present(x) ((x).pte_low & (_PAGE_PRESENT | _PAGE_PROTNONE))
-#define pte_clear(xp) do { set_pte(xp, __pte(0)); } while (0)
-
-#define pmd_none(x) (!pmd_val(x))
-/* pmd_present doesn't just test the _PAGE_PRESENT bit since wr.p.t.
- can temporarily clear it. */
-#define pmd_present(x) (pmd_val(x))
-#define pmd_clear(xp) do { set_pmd(xp, __pmd(0)); } while (0)
-#define pmd_bad(x) ((pmd_val(x) & (~PAGE_MASK & ~_PAGE_USER &
~_PAGE_PRESENT)) != (_KERNPG_TABLE & ~_PAGE_PRESENT))
-
-
-#define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT))
-
-/*
- * The following only work if pte_present() is true.
- * Undefined behaviour if not..
- */
-static inline int pte_user(pte_t pte) { return (pte).pte_low &
_PAGE_USER; }
-static inline int pte_read(pte_t pte) { return (pte).pte_low &
_PAGE_USER; }
-static inline int pte_dirty(pte_t pte) { return (pte).pte_low &
_PAGE_DIRTY; }
-static inline int pte_young(pte_t pte) { return (pte).pte_low &
_PAGE_ACCESSED; }
-static inline int pte_write(pte_t pte) { return (pte).pte_low &
_PAGE_RW; }
-
-/*
- * The following only works if pte_present() is not true.
- */
-static inline int pte_file(pte_t pte) { return (pte).pte_low &
_PAGE_FILE; }
-
-static inline pte_t pte_rdprotect(pte_t pte) { (pte).pte_low &= ~_PAGE_USER;
return pte; }
-static inline pte_t pte_exprotect(pte_t pte) { (pte).pte_low &= ~_PAGE_USER;
return pte; }
-static inline pte_t pte_mkclean(pte_t pte) { (pte).pte_low &=
~_PAGE_DIRTY; return pte; }
-static inline pte_t pte_mkold(pte_t pte) { (pte).pte_low &=
~_PAGE_ACCESSED; return pte; }
-static inline pte_t pte_wrprotect(pte_t pte) { (pte).pte_low &= ~_PAGE_RW;
return pte; }
-static inline pte_t pte_mkread(pte_t pte) { (pte).pte_low |= _PAGE_USER;
return pte; }
-static inline pte_t pte_mkexec(pte_t pte) { (pte).pte_low |= _PAGE_USER;
return pte; }
-static inline pte_t pte_mkdirty(pte_t pte) { (pte).pte_low |= _PAGE_DIRTY;
return pte; }
-static inline pte_t pte_mkyoung(pte_t pte) { (pte).pte_low |=
_PAGE_ACCESSED; return pte; }
-static inline pte_t pte_mkwrite(pte_t pte) { (pte).pte_low |= _PAGE_RW;
return pte; }
-
-#ifdef CONFIG_X86_PAE
-# include <asm/pgtable-3level.h>
-#else
-# include <asm/pgtable-2level.h>
-#endif
-
-static inline int ptep_test_and_clear_dirty(pte_t *ptep)
-{
- if (!pte_dirty(*ptep))
- return 0;
- return test_and_clear_bit(_PAGE_BIT_DIRTY, &ptep->pte_low);
-}
-
-static inline int ptep_test_and_clear_young(pte_t *ptep)
-{
- if (!pte_young(*ptep))
- return 0;
- return test_and_clear_bit(_PAGE_BIT_ACCESSED, &ptep->pte_low);
-}
-
-static inline void ptep_set_wrprotect(pte_t *ptep)
-{
- if (pte_write(*ptep))
- clear_bit(_PAGE_BIT_RW, &ptep->pte_low);
-}
-
-static inline void ptep_mkdirty(pte_t *ptep)
-{
- if (!pte_dirty(*ptep))
- set_bit(_PAGE_BIT_DIRTY, &ptep->pte_low);
-}
-
-/*
- * Macro to mark a page protection value as "uncacheable". On processors
which do not support
- * it, this is a no-op.
- */
-#define pgprot_noncached(prot) ((boot_cpu_data.x86 > 3)
\
- ? (__pgprot(pgprot_val(prot) | _PAGE_PCD |
_PAGE_PWT)) : (prot))
-
-/*
- * Conversion functions: convert a page and protection to a page entry,
- * and a page entry and page directory to the page they refer to.
- */
-
-#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))
-#define mk_pte_huge(entry) ((entry).pte_low |= _PAGE_PRESENT | _PAGE_PSE)
-
-static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
-{
- pte.pte_low &= _PAGE_CHG_MASK;
- pte.pte_low |= pgprot_val(newprot);
-#ifdef CONFIG_X86_PAE
- /*
- * Chop off the NX bit (if present), and add the NX portion of
- * the newprot (if present):
- */
- pte.pte_high &= ~(1 << (_PAGE_BIT_NX - 32));
- pte.pte_high |= (pgprot_val(newprot) >> 32) & \
- (__supported_pte_mask >> 32);
-#endif
- return pte;
-}
-
-#define page_pte(page) page_pte_prot(page, __pgprot(0))
-
-#define pmd_large(pmd) \
-((pmd_val(pmd) & (_PAGE_PSE|_PAGE_PRESENT)) == (_PAGE_PSE|_PAGE_PRESENT))
-
-/*
- * the pgd page can be thought of an array like this: pgd_t[PTRS_PER_PGD]
- *
- * this macro returns the index of the entry in the pgd page which would
- * control the given virtual address
- */
-#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
-#define pgd_index_k(addr) pgd_index(addr)
-
-/*
- * pgd_offset() returns a (pgd_t *)
- * pgd_index() is used get the offset into the pgd page's array of pgd_t's;
- */
-#define pgd_offset(mm, address) ((mm)->pgd+pgd_index(address))
-
-/*
- * a shortcut which implies the use of the kernel's pgd, instead
- * of a process's
- */
-#define pgd_offset_k(address) pgd_offset(&init_mm, address)
-
-/*
- * the pmd page can be thought of an array like this: pmd_t[PTRS_PER_PMD]
- *
- * this macro returns the index of the entry in the pmd page which would
- * control the given virtual address
- */
-#define pmd_index(address) \
- (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
-
-/*
- * the pte page can be thought of an array like this: pte_t[PTRS_PER_PTE]
- *
- * this macro returns the index of the entry in the pte page which would
- * control the given virtual address
- */
-#define pte_index(address) \
- (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
-#define pte_offset_kernel(dir, address) \
- ((pte_t *) pmd_page_kernel(*(dir)) + pte_index(address))
-
-/*
- * Helper function that returns the kernel pagetable entry controlling
- * the virtual address 'address'. NULL means no pagetable entry present.
- * NOTE: the return type is pte_t but if the pmd is PSE then we return it
- * as a pte too.
- */
-extern pte_t *lookup_address(unsigned long address);
-
-/*
- * Make a given kernel text page executable/non-executable.
- * Returns the previous executability setting of that page (which
- * is used to restore the previous state). Used by the SMP bootup code.
- * NOTE: this is an __init function for security reasons.
- */
-#ifdef CONFIG_X86_PAE
- extern int set_kernel_exec(unsigned long vaddr, int enable);
-#else
- static inline int set_kernel_exec(unsigned long vaddr, int enable) { return
0;}
-#endif
-
-extern void noexec_setup(const char *str);
-
-#if defined(CONFIG_HIGHPTE)
-#define pte_offset_map(dir, address) \
- ((pte_t *)kmap_atomic_pte(pmd_page(*(dir)),KM_PTE0) + \
- pte_index(address))
-#define pte_offset_map_nested(dir, address) \
- ((pte_t *)kmap_atomic_pte(pmd_page(*(dir)),KM_PTE1) + \
- pte_index(address))
-#define pte_unmap(pte) kunmap_atomic(pte, KM_PTE0)
-#define pte_unmap_nested(pte) kunmap_atomic(pte, KM_PTE1)
-#else
-#define pte_offset_map(dir, address) \
- ((pte_t *)page_address(pmd_page(*(dir))) + pte_index(address))
-#define pte_offset_map_nested(dir, address) pte_offset_map(dir, address)
-#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
-#endif
-
-/*
- * The i386 doesn't have any external MMU info: the kernel page
- * tables contain all the necessary information.
- *
- * Also, we only update the dirty/accessed state if we set
- * the dirty bit by hand in the kernel, since the hardware
- * will do the accessed bit for us, and we don't want to
- * race with other CPU's that might be updating the dirty
- * bit at the same time.
- */
-#define update_mmu_cache(vma,address,pte) do { } while (0)
-#define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
-#define ptep_set_access_flags(__vma, __address, __ptep, __entry, __dirty) \
- do { \
- if (__dirty) { \
- if ( likely((__vma)->vm_mm == current->mm) ) { \
- HYPERVISOR_update_va_mapping((__address),
(__entry), UVMF_INVLPG|UVMF_MULTI|(unsigned
long)((__vma)->vm_mm->cpu_vm_mask.bits)); \
- } else { \
- xen_l1_entry_update((__ptep), (__entry).pte_low); \
- flush_tlb_page((__vma), (__address)); \
- } \
- } \
- } while (0)
-
-#define __HAVE_ARCH_PTEP_ESTABLISH
-#define ptep_establish(__vma, __address, __ptep, __entry) \
-do { \
- ptep_set_access_flags(__vma, __address, __ptep, __entry, 1); \
-} while (0)
-
-#define __HAVE_ARCH_PTEP_ESTABLISH_NEW
-#define ptep_establish_new(__vma, __address, __ptep, __entry) \
-do { \
- if (likely((__vma)->vm_mm == current->mm)) { \
- HYPERVISOR_update_va_mapping((__address), \
- __entry, 0); \
- } else { \
- xen_l1_entry_update((__ptep), (__entry).pte_low); \
- } \
-} while (0)
-
-#ifndef CONFIG_XEN_SHADOW_MODE
-void make_lowmem_page_readonly(void *va);
-void make_lowmem_page_writable(void *va);
-void make_page_readonly(void *va);
-void make_page_writable(void *va);
-void make_pages_readonly(void *va, unsigned int nr);
-void make_pages_writable(void *va, unsigned int nr);
-#else
-#define make_lowmem_page_readonly(_va) ((void)0)
-#define make_lowmem_page_writable(_va) ((void)0)
-#define make_page_readonly(_va) ((void)0)
-#define make_page_writable(_va) ((void)0)
-#define make_pages_readonly(_va, _nr) ((void)0)
-#define make_pages_writable(_va, _nr) ((void)0)
-#endif
-
-#define virt_to_ptep(__va) \
-({ \
- pgd_t *__pgd = pgd_offset_k((unsigned long)(__va)); \
- pud_t *__pud = pud_offset(__pgd, (unsigned long)(__va)); \
- pmd_t *__pmd = pmd_offset(__pud, (unsigned long)(__va)); \
- pte_offset_kernel(__pmd, (unsigned long)(__va)); \
-})
-
-#define arbitrary_virt_to_machine(__va)
\
-({ \
- pte_t *__pte = virt_to_ptep(__va); \
- unsigned long __pa = (*(unsigned long *)__pte) & PAGE_MASK; \
- __pa | ((unsigned long)(__va) & (PAGE_SIZE-1)); \
-})
-
-#endif /* !__ASSEMBLY__ */
-
-#ifndef CONFIG_DISCONTIGMEM
-#define kern_addr_valid(addr) (1)
-#endif /* !CONFIG_DISCONTIGMEM */
-
-int direct_remap_area_pages(struct mm_struct *mm,
- unsigned long address,
- unsigned long machine_addr,
- unsigned long size,
- pgprot_t prot,
- domid_t domid);
-int __direct_remap_area_pages(struct mm_struct *mm,
- unsigned long address,
- unsigned long size,
- mmu_update_t *v);
-
-#define io_remap_page_range(vma,from,phys,size,prot) \
-direct_remap_area_pages(vma->vm_mm,from,phys,size,prot,DOMID_IO)
-
-#define io_remap_pfn_range(vma,from,pfn,size,prot) \
-direct_remap_area_pages(vma->vm_mm,from,pfn<<PAGE_SHIFT,size,prot,DOMID_IO)
-
-#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
-#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_DIRTY
-#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
-#define __HAVE_ARCH_PTEP_SET_WRPROTECT
-#define __HAVE_ARCH_PTEP_MKDIRTY
-#define __HAVE_ARCH_PTE_SAME
-#include <asm-generic/pgtable.h>
-
-#endif /* _I386_PGTABLE_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/processor.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/processor.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,684 +0,0 @@
-/*
- * include/asm-i386/processor.h
- *
- * Copyright (C) 1994 Linus Torvalds
- */
-
-#ifndef __ASM_I386_PROCESSOR_H
-#define __ASM_I386_PROCESSOR_H
-
-#include <asm/vm86.h>
-#include <asm/math_emu.h>
-#include <asm/segment.h>
-#include <asm/page.h>
-#include <asm/types.h>
-#include <asm/sigcontext.h>
-#include <asm/cpufeature.h>
-#include <asm/msr.h>
-#include <asm/system.h>
-#include <linux/cache.h>
-#include <linux/config.h>
-#include <linux/threads.h>
-#include <asm/percpu.h>
-
-/* flag for disabling the tsc */
-extern int tsc_disable;
-
-struct desc_struct {
- unsigned long a,b;
-};
-
-#define desc_empty(desc) \
- (!((desc)->a + (desc)->b))
-
-#define desc_equal(desc1, desc2) \
- (((desc1)->a == (desc2)->a) && ((desc1)->b == (desc2)->b))
-/*
- * Default implementation of macro that returns current
- * instruction pointer ("program counter").
- */
-#define current_text_addr() ({ void *pc; __asm__("movl $1f,%0\n1:":"=g" (pc));
pc; })
-
-/*
- * CPU type and hardware bug flags. Kept separately for each CPU.
- * Members of this structure are referenced in head.S, so think twice
- * before touching them. [mj]
- */
-
-struct cpuinfo_x86 {
- __u8 x86; /* CPU family */
- __u8 x86_vendor; /* CPU vendor */
- __u8 x86_model;
- __u8 x86_mask;
- char wp_works_ok; /* It doesn't on 386's */
- char hlt_works_ok; /* Problems on some 486Dx4's and old 386's */
- char hard_math;
- char rfu;
- int cpuid_level; /* Maximum supported CPUID level, -1=no
CPUID */
- unsigned long x86_capability[NCAPINTS];
- char x86_vendor_id[16];
- char x86_model_id[64];
- int x86_cache_size; /* in KB - valid for CPUS which support this
- call */
- int x86_cache_alignment; /* In bytes */
- int fdiv_bug;
- int f00f_bug;
- int coma_bug;
- unsigned long loops_per_jiffy;
- unsigned char x86_num_cores;
-} __attribute__((__aligned__(SMP_CACHE_BYTES)));
-
-#define X86_VENDOR_INTEL 0
-#define X86_VENDOR_CYRIX 1
-#define X86_VENDOR_AMD 2
-#define X86_VENDOR_UMC 3
-#define X86_VENDOR_NEXGEN 4
-#define X86_VENDOR_CENTAUR 5
-#define X86_VENDOR_RISE 6
-#define X86_VENDOR_TRANSMETA 7
-#define X86_VENDOR_NSC 8
-#define X86_VENDOR_NUM 9
-#define X86_VENDOR_UNKNOWN 0xff
-
-/*
- * capabilities of CPUs
- */
-
-extern struct cpuinfo_x86 boot_cpu_data;
-extern struct cpuinfo_x86 new_cpu_data;
-extern struct tss_struct doublefault_tss;
-DECLARE_PER_CPU(struct tss_struct, init_tss);
-DECLARE_PER_CPU(pgd_t *, cur_pgd);
-
-#ifdef CONFIG_SMP
-extern struct cpuinfo_x86 cpu_data[];
-#define current_cpu_data cpu_data[smp_processor_id()]
-#else
-#define cpu_data (&boot_cpu_data)
-#define current_cpu_data boot_cpu_data
-#endif
-
-extern int phys_proc_id[NR_CPUS];
-extern char ignore_fpu_irq;
-
-extern void identify_cpu(struct cpuinfo_x86 *);
-extern void print_cpu_info(struct cpuinfo_x86 *);
-extern unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c);
-extern void dodgy_tsc(void);
-
-#ifdef CONFIG_X86_HT
-extern void detect_ht(struct cpuinfo_x86 *c);
-#else
-static inline void detect_ht(struct cpuinfo_x86 *c) {}
-#endif
-
-/*
- * EFLAGS bits
- */
-#define X86_EFLAGS_CF 0x00000001 /* Carry Flag */
-#define X86_EFLAGS_PF 0x00000004 /* Parity Flag */
-#define X86_EFLAGS_AF 0x00000010 /* Auxillary carry Flag */
-#define X86_EFLAGS_ZF 0x00000040 /* Zero Flag */
-#define X86_EFLAGS_SF 0x00000080 /* Sign Flag */
-#define X86_EFLAGS_TF 0x00000100 /* Trap Flag */
-#define X86_EFLAGS_IF 0x00000200 /* Interrupt Flag */
-#define X86_EFLAGS_DF 0x00000400 /* Direction Flag */
-#define X86_EFLAGS_OF 0x00000800 /* Overflow Flag */
-#define X86_EFLAGS_IOPL 0x00003000 /* IOPL mask */
-#define X86_EFLAGS_NT 0x00004000 /* Nested Task */
-#define X86_EFLAGS_RF 0x00010000 /* Resume Flag */
-#define X86_EFLAGS_VM 0x00020000 /* Virtual Mode */
-#define X86_EFLAGS_AC 0x00040000 /* Alignment Check */
-#define X86_EFLAGS_VIF 0x00080000 /* Virtual Interrupt Flag */
-#define X86_EFLAGS_VIP 0x00100000 /* Virtual Interrupt Pending */
-#define X86_EFLAGS_ID 0x00200000 /* CPUID detection flag */
-
-/*
- * Generic CPUID function
- * clear %ecx since some cpus (Cyrix MII) do not set or clear %ecx
- * resulting in stale register contents being returned.
- */
-static inline void cpuid(int op, int *eax, int *ebx, int *ecx, int *edx)
-{
- __asm__("cpuid"
- : "=a" (*eax),
- "=b" (*ebx),
- "=c" (*ecx),
- "=d" (*edx)
- : "0" (op), "c"(0));
-}
-
-/*
- * CPUID functions returning a single datum
- */
-static inline unsigned int cpuid_eax(unsigned int op)
-{
- unsigned int eax;
-
- __asm__("cpuid"
- : "=a" (eax)
- : "0" (op)
- : "bx", "cx", "dx");
- return eax;
-}
-static inline unsigned int cpuid_ebx(unsigned int op)
-{
- unsigned int eax, ebx;
-
- __asm__("cpuid"
- : "=a" (eax), "=b" (ebx)
- : "0" (op)
- : "cx", "dx" );
- return ebx;
-}
-static inline unsigned int cpuid_ecx(unsigned int op)
-{
- unsigned int eax, ecx;
-
- __asm__("cpuid"
- : "=a" (eax), "=c" (ecx)
- : "0" (op)
- : "bx", "dx" );
- return ecx;
-}
-static inline unsigned int cpuid_edx(unsigned int op)
-{
- unsigned int eax, edx;
-
- __asm__("cpuid"
- : "=a" (eax), "=d" (edx)
- : "0" (op)
- : "bx", "cx");
- return edx;
-}
-
-#define load_cr3(pgdir) do { \
- xen_pt_switch(__pa(pgdir)); \
- per_cpu(cur_pgd, smp_processor_id()) = pgdir; \
-} while (/* CONSTCOND */0)
-
-
-/*
- * Intel CPU features in CR4
- */
-#define X86_CR4_VME 0x0001 /* enable vm86 extensions */
-#define X86_CR4_PVI 0x0002 /* virtual interrupts flag enable */
-#define X86_CR4_TSD 0x0004 /* disable time stamp at ipl 3 */
-#define X86_CR4_DE 0x0008 /* enable debugging extensions */
-#define X86_CR4_PSE 0x0010 /* enable page size extensions */
-#define X86_CR4_PAE 0x0020 /* enable physical address extensions */
-#define X86_CR4_MCE 0x0040 /* Machine check enable */
-#define X86_CR4_PGE 0x0080 /* enable global pages */
-#define X86_CR4_PCE 0x0100 /* enable performance counters at ipl 3
*/
-#define X86_CR4_OSFXSR 0x0200 /* enable fast FPU save and restore */
-#define X86_CR4_OSXMMEXCPT 0x0400 /* enable unmasked SSE exceptions */
-
-/*
- * Save the cr4 feature set we're using (ie
- * Pentium 4MB enable and PPro Global page
- * enable), so that any CPU's that boot up
- * after us can get the correct flags.
- */
-extern unsigned long mmu_cr4_features;
-
-static inline void set_in_cr4 (unsigned long mask)
-{
- mmu_cr4_features |= mask;
- switch (mask) {
- case X86_CR4_OSFXSR:
- case X86_CR4_OSXMMEXCPT:
- break;
- default:
- do {
- const char *msg = "Xen unsupported cr4 update\n";
- (void)HYPERVISOR_console_io(
- CONSOLEIO_write, __builtin_strlen(msg),
- (char *)msg);
- BUG();
- } while (0);
- }
-}
-
-static inline void clear_in_cr4 (unsigned long mask)
-{
- mmu_cr4_features &= ~mask;
- __asm__("movl %%cr4,%%eax\n\t"
- "andl %0,%%eax\n\t"
- "movl %%eax,%%cr4\n"
- : : "irg" (~mask)
- :"ax");
-}
-
-/*
- * NSC/Cyrix CPU configuration register indexes
- */
-
-#define CX86_PCR0 0x20
-#define CX86_GCR 0xb8
-#define CX86_CCR0 0xc0
-#define CX86_CCR1 0xc1
-#define CX86_CCR2 0xc2
-#define CX86_CCR3 0xc3
-#define CX86_CCR4 0xe8
-#define CX86_CCR5 0xe9
-#define CX86_CCR6 0xea
-#define CX86_CCR7 0xeb
-#define CX86_PCR1 0xf0
-#define CX86_DIR0 0xfe
-#define CX86_DIR1 0xff
-#define CX86_ARR_BASE 0xc4
-#define CX86_RCR_BASE 0xdc
-
-/*
- * NSC/Cyrix CPU indexed register access macros
- */
-
-#define getCx86(reg) ({ outb((reg), 0x22); inb(0x23); })
-
-#define setCx86(reg, data) do { \
- outb((reg), 0x22); \
- outb((data), 0x23); \
-} while (0)
-
-static inline void __monitor(const void *eax, unsigned long ecx,
- unsigned long edx)
-{
- /* "monitor %eax,%ecx,%edx;" */
- asm volatile(
- ".byte 0x0f,0x01,0xc8;"
- : :"a" (eax), "c" (ecx), "d"(edx));
-}
-
-static inline void __mwait(unsigned long eax, unsigned long ecx)
-{
- /* "mwait %eax,%ecx;" */
- asm volatile(
- ".byte 0x0f,0x01,0xc9;"
- : :"a" (eax), "c" (ecx));
-}
-
-/* from system description table in BIOS. Mostly for MCA use, but
-others may find it useful. */
-extern unsigned int machine_id;
-extern unsigned int machine_submodel_id;
-extern unsigned int BIOS_revision;
-extern unsigned int mca_pentium_flag;
-
-/* Boot loader type from the setup header */
-extern int bootloader_type;
-
-/*
- * User space process size: 3GB (default).
- */
-#define TASK_SIZE (PAGE_OFFSET)
-
-/* This decides where the kernel will search for a free chunk of vm
- * space during mmap's.
- */
-#define TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE / 3))
-
-#define HAVE_ARCH_PICK_MMAP_LAYOUT
-
-/*
- * Size of io_bitmap.
- */
-#define IO_BITMAP_BITS 65536
-#define IO_BITMAP_BYTES (IO_BITMAP_BITS/8)
-#define IO_BITMAP_LONGS (IO_BITMAP_BYTES/sizeof(long))
-#define IO_BITMAP_OFFSET offsetof(struct tss_struct,io_bitmap)
-#define INVALID_IO_BITMAP_OFFSET 0x8000
-#define INVALID_IO_BITMAP_OFFSET_LAZY 0x9000
-
-struct i387_fsave_struct {
- long cwd;
- long swd;
- long twd;
- long fip;
- long fcs;
- long foo;
- long fos;
- long st_space[20]; /* 8*10 bytes for each FP-reg = 80 bytes */
- long status; /* software status information */
-};
-
-struct i387_fxsave_struct {
- unsigned short cwd;
- unsigned short swd;
- unsigned short twd;
- unsigned short fop;
- long fip;
- long fcs;
- long foo;
- long fos;
- long mxcsr;
- long mxcsr_mask;
- long st_space[32]; /* 8*16 bytes for each FP-reg = 128 bytes */
- long xmm_space[32]; /* 8*16 bytes for each XMM-reg = 128 bytes */
- long padding[56];
-} __attribute__ ((aligned (16)));
-
-struct i387_soft_struct {
- long cwd;
- long swd;
- long twd;
- long fip;
- long fcs;
- long foo;
- long fos;
- long st_space[20]; /* 8*10 bytes for each FP-reg = 80 bytes */
- unsigned char ftop, changed, lookahead, no_update, rm, alimit;
- struct info *info;
- unsigned long entry_eip;
-};
-
-union i387_union {
- struct i387_fsave_struct fsave;
- struct i387_fxsave_struct fxsave;
- struct i387_soft_struct soft;
-};
-
-typedef struct {
- unsigned long seg;
-} mm_segment_t;
-
-struct thread_struct;
-
-struct tss_struct {
- unsigned short back_link,__blh;
- unsigned long esp0;
- unsigned short ss0,__ss0h;
- unsigned long esp1;
- unsigned short ss1,__ss1h; /* ss1 is used to cache
MSR_IA32_SYSENTER_CS */
- unsigned long esp2;
- unsigned short ss2,__ss2h;
- unsigned long __cr3;
- unsigned long eip;
- unsigned long eflags;
- unsigned long eax,ecx,edx,ebx;
- unsigned long esp;
- unsigned long ebp;
- unsigned long esi;
- unsigned long edi;
- unsigned short es, __esh;
- unsigned short cs, __csh;
- unsigned short ss, __ssh;
- unsigned short ds, __dsh;
- unsigned short fs, __fsh;
- unsigned short gs, __gsh;
- unsigned short ldt, __ldth;
- unsigned short trace, io_bitmap_base;
- /*
- * The extra 1 is there because the CPU will access an
- * additional byte beyond the end of the IO permission
- * bitmap. The extra byte must be all 1 bits, and must
- * be within the limit.
- */
- unsigned long io_bitmap[IO_BITMAP_LONGS + 1];
- /*
- * Cache the current maximum and the last task that used the bitmap:
- */
- unsigned long io_bitmap_max;
- struct thread_struct *io_bitmap_owner;
- /*
- * pads the TSS to be cacheline-aligned (size is 0x100)
- */
- unsigned long __cacheline_filler[35];
- /*
- * .. and then another 0x100 bytes for emergency kernel stack
- */
- unsigned long stack[64];
-} __attribute__((packed));
-
-#define ARCH_MIN_TASKALIGN 16
-
-struct thread_struct {
-/* cached TLS descriptors. */
- struct desc_struct tls_array[GDT_ENTRY_TLS_ENTRIES];
- unsigned long esp0;
- unsigned long sysenter_cs;
- unsigned long eip;
- unsigned long esp;
- unsigned long fs;
- unsigned long gs;
- unsigned int io_pl;
-/* Hardware debugging registers */
- unsigned long debugreg[8]; /* %%db0-7 debug registers */
-/* fault info */
- unsigned long cr2, trap_no, error_code;
-/* floating point info */
- union i387_union i387;
-/* virtual 86 mode info */
- struct vm86_struct __user * vm86_info;
- unsigned long screen_bitmap;
- unsigned long v86flags, v86mask, saved_esp0;
- unsigned int saved_fs, saved_gs;
-/* IO permissions */
- unsigned long *io_bitmap_ptr;
-/* max allowed port in the bitmap, in bytes: */
- unsigned long io_bitmap_max;
-};
-
-#define INIT_THREAD { \
- .vm86_info = NULL, \
- .sysenter_cs = __KERNEL_CS, \
- .io_bitmap_ptr = NULL, \
-}
-
-/*
- * Note that the .io_bitmap member must be extra-big. This is because
- * the CPU will access an additional byte beyond the end of the IO
- * permission bitmap. The extra byte must be all 1 bits, and must
- * be within the limit.
- */
-#define INIT_TSS { \
- .esp0 = sizeof(init_stack) + (long)&init_stack, \
- .ss0 = __KERNEL_DS, \
- .ss1 = __KERNEL_CS, \
- .ldt = GDT_ENTRY_LDT, \
- .io_bitmap_base = INVALID_IO_BITMAP_OFFSET, \
- .io_bitmap = { [ 0 ... IO_BITMAP_LONGS] = ~0 }, \
-}
-
-static inline void load_esp0(struct tss_struct *tss, struct thread_struct
*thread)
-{
- tss->esp0 = thread->esp0;
- /* This can only happen when SEP is enabled, no need to test
"SEP"arately */
- if (unlikely(tss->ss1 != thread->sysenter_cs)) {
- tss->ss1 = thread->sysenter_cs;
- wrmsr(MSR_IA32_SYSENTER_CS, thread->sysenter_cs, 0);
- }
- HYPERVISOR_stack_switch(tss->ss0, tss->esp0);
-}
-
-#define start_thread(regs, new_eip, new_esp) do { \
- __asm__("movl %0,%%fs ; movl %0,%%gs": :"r" (0)); \
- set_fs(USER_DS); \
- regs->xds = __USER_DS; \
- regs->xes = __USER_DS; \
- regs->xss = __USER_DS; \
- regs->xcs = __USER_CS; \
- regs->eip = new_eip; \
- regs->esp = new_esp; \
-} while (0)
-
-/* Forward declaration, a strange C thing */
-struct task_struct;
-struct mm_struct;
-
-/* Free all resources held by a thread. */
-extern void release_thread(struct task_struct *);
-
-/* Prepare to copy thread state - unlazy all lazy status */
-extern void prepare_to_copy(struct task_struct *tsk);
-
-/*
- * create a kernel thread without removing it from tasklists
- */
-extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
-
-extern unsigned long thread_saved_pc(struct task_struct *tsk);
-void show_trace(struct task_struct *task, unsigned long *stack);
-
-unsigned long get_wchan(struct task_struct *p);
-
-#define THREAD_SIZE_LONGS (THREAD_SIZE/sizeof(unsigned long))
-#define KSTK_TOP(info) \
-({ \
- unsigned long *__ptr = (unsigned long *)(info); \
- (unsigned long)(&__ptr[THREAD_SIZE_LONGS]); \
-})
-
-#define task_pt_regs(task) \
-({ \
- struct pt_regs *__regs__; \
- __regs__ = (struct pt_regs *)KSTK_TOP((task)->thread_info); \
- __regs__ - 1; \
-})
-
-#define KSTK_EIP(task) (task_pt_regs(task)->eip)
-#define KSTK_ESP(task) (task_pt_regs(task)->esp)
-
-
-struct microcode_header {
- unsigned int hdrver;
- unsigned int rev;
- unsigned int date;
- unsigned int sig;
- unsigned int cksum;
- unsigned int ldrver;
- unsigned int pf;
- unsigned int datasize;
- unsigned int totalsize;
- unsigned int reserved[3];
-};
-
-struct microcode {
- struct microcode_header hdr;
- unsigned int bits[0];
-};
-
-typedef struct microcode microcode_t;
-typedef struct microcode_header microcode_header_t;
-
-/* microcode format is extended from prescott processors */
-struct extended_signature {
- unsigned int sig;
- unsigned int pf;
- unsigned int cksum;
-};
-
-struct extended_sigtable {
- unsigned int count;
- unsigned int cksum;
- unsigned int reserved[3];
- struct extended_signature sigs[0];
-};
-/* '6' because it used to be for P6 only (but now covers Pentium 4 as well) */
-#define MICROCODE_IOCFREE _IO('6',0)
-
-/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
-static inline void rep_nop(void)
-{
- __asm__ __volatile__("rep;nop": : :"memory");
-}
-
-#define cpu_relax() rep_nop()
-
-/* generic versions from gas */
-#define GENERIC_NOP1 ".byte 0x90\n"
-#define GENERIC_NOP2 ".byte 0x89,0xf6\n"
-#define GENERIC_NOP3 ".byte 0x8d,0x76,0x00\n"
-#define GENERIC_NOP4 ".byte 0x8d,0x74,0x26,0x00\n"
-#define GENERIC_NOP5 GENERIC_NOP1 GENERIC_NOP4
-#define GENERIC_NOP6 ".byte 0x8d,0xb6,0x00,0x00,0x00,0x00\n"
-#define GENERIC_NOP7 ".byte 0x8d,0xb4,0x26,0x00,0x00,0x00,0x00\n"
-#define GENERIC_NOP8 GENERIC_NOP1 GENERIC_NOP7
-
-/* Opteron nops */
-#define K8_NOP1 GENERIC_NOP1
-#define K8_NOP2 ".byte 0x66,0x90\n"
-#define K8_NOP3 ".byte 0x66,0x66,0x90\n"
-#define K8_NOP4 ".byte 0x66,0x66,0x66,0x90\n"
-#define K8_NOP5 K8_NOP3 K8_NOP2
-#define K8_NOP6 K8_NOP3 K8_NOP3
-#define K8_NOP7 K8_NOP4 K8_NOP3
-#define K8_NOP8 K8_NOP4 K8_NOP4
-
-/* K7 nops */
-/* uses eax dependencies (arbitary choice) */
-#define K7_NOP1 GENERIC_NOP1
-#define K7_NOP2 ".byte 0x8b,0xc0\n"
-#define K7_NOP3 ".byte 0x8d,0x04,0x20\n"
-#define K7_NOP4 ".byte 0x8d,0x44,0x20,0x00\n"
-#define K7_NOP5 K7_NOP4 ASM_NOP1
-#define K7_NOP6 ".byte 0x8d,0x80,0,0,0,0\n"
-#define K7_NOP7 ".byte 0x8D,0x04,0x05,0,0,0,0\n"
-#define K7_NOP8 K7_NOP7 ASM_NOP1
-
-#ifdef CONFIG_MK8
-#define ASM_NOP1 K8_NOP1
-#define ASM_NOP2 K8_NOP2
-#define ASM_NOP3 K8_NOP3
-#define ASM_NOP4 K8_NOP4
-#define ASM_NOP5 K8_NOP5
-#define ASM_NOP6 K8_NOP6
-#define ASM_NOP7 K8_NOP7
-#define ASM_NOP8 K8_NOP8
-#elif defined(CONFIG_MK7)
-#define ASM_NOP1 K7_NOP1
-#define ASM_NOP2 K7_NOP2
-#define ASM_NOP3 K7_NOP3
-#define ASM_NOP4 K7_NOP4
-#define ASM_NOP5 K7_NOP5
-#define ASM_NOP6 K7_NOP6
-#define ASM_NOP7 K7_NOP7
-#define ASM_NOP8 K7_NOP8
-#else
-#define ASM_NOP1 GENERIC_NOP1
-#define ASM_NOP2 GENERIC_NOP2
-#define ASM_NOP3 GENERIC_NOP3
-#define ASM_NOP4 GENERIC_NOP4
-#define ASM_NOP5 GENERIC_NOP5
-#define ASM_NOP6 GENERIC_NOP6
-#define ASM_NOP7 GENERIC_NOP7
-#define ASM_NOP8 GENERIC_NOP8
-#endif
-
-#define ASM_NOP_MAX 8
-
-/* Prefetch instructions for Pentium III and AMD Athlon */
-/* It's not worth to care about 3dnow! prefetches for the K6
- because they are microcoded there and very slow.
- However we don't do prefetches for pre XP Athlons currently
- That should be fixed. */
-#define ARCH_HAS_PREFETCH
-extern inline void prefetch(const void *x)
-{
- alternative_input(ASM_NOP4,
- "prefetchnta (%1)",
- X86_FEATURE_XMM,
- "r" (x));
-}
-
-#define ARCH_HAS_PREFETCH
-#define ARCH_HAS_PREFETCHW
-#define ARCH_HAS_SPINLOCK_PREFETCH
-
-/* 3dnow! prefetch to get an exclusive cache line. Useful for
- spinlocks to avoid one state transition in the cache coherency protocol. */
-extern inline void prefetchw(const void *x)
-{
- alternative_input(ASM_NOP4,
- "prefetchw (%1)",
- X86_FEATURE_3DNOW,
- "r" (x));
-}
-#define spin_lock_prefetch(x) prefetchw(x)
-
-extern void select_idle_routine(const struct cpuinfo_x86 *c);
-
-#define cache_line_size() (boot_cpu_data.x86_cache_alignment)
-
-extern unsigned long boot_option_idle_override;
-
-#endif /* __ASM_I386_PROCESSOR_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/ptrace.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/ptrace.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,69 +0,0 @@
-#ifndef _I386_PTRACE_H
-#define _I386_PTRACE_H
-
-#define EBX 0
-#define ECX 1
-#define EDX 2
-#define ESI 3
-#define EDI 4
-#define EBP 5
-#define EAX 6
-#define DS 7
-#define ES 8
-#define FS 9
-#define GS 10
-#define ORIG_EAX 11
-#define EIP 12
-#define CS 13
-#define EFL 14
-#define UESP 15
-#define SS 16
-#define FRAME_SIZE 17
-
-/* this struct defines the way the registers are stored on the
- stack during a system call. */
-
-struct pt_regs {
- long ebx;
- long ecx;
- long edx;
- long esi;
- long edi;
- long ebp;
- long eax;
- int xds;
- int xes;
- long orig_eax;
- long eip;
- int xcs;
- long eflags;
- long esp;
- int xss;
-};
-
-/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
-#define PTRACE_GETREGS 12
-#define PTRACE_SETREGS 13
-#define PTRACE_GETFPREGS 14
-#define PTRACE_SETFPREGS 15
-#define PTRACE_GETFPXREGS 18
-#define PTRACE_SETFPXREGS 19
-
-#define PTRACE_OLDSETOPTIONS 21
-
-#define PTRACE_GET_THREAD_AREA 25
-#define PTRACE_SET_THREAD_AREA 26
-
-#ifdef __KERNEL__
-struct task_struct;
-extern void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, int
error_code);
-#define user_mode(regs) ((VM_MASK & (regs)->eflags) || (2 & (regs)->xcs))
-#define instruction_pointer(regs) ((regs)->eip)
-#if defined(CONFIG_SMP) && defined(CONFIG_FRAME_POINTER)
-extern unsigned long profile_pc(struct pt_regs *regs);
-#else
-#define profile_pc(regs) instruction_pointer(regs)
-#endif
-#endif
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/segment.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/segment.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,96 +0,0 @@
-#ifndef _ASM_SEGMENT_H
-#define _ASM_SEGMENT_H
-
-/*
- * The layout of the per-CPU GDT under Linux:
- *
- * 0 - null
- * 1 - reserved
- * 2 - reserved
- * 3 - reserved
- *
- * 4 - unused <==== new cacheline
- * 5 - unused
- *
- * ------- start of TLS (Thread-Local Storage) segments:
- *
- * 6 - TLS segment #1 [ glibc's TLS segment ]
- * 7 - TLS segment #2 [ Wine's %fs Win32 segment ]
- * 8 - TLS segment #3
- * 9 - reserved
- * 10 - reserved
- * 11 - reserved
- *
- * ------- start of kernel segments:
- *
- * 12 - kernel code segment <==== new cacheline
- * 13 - kernel data segment
- * 14 - default user CS
- * 15 - default user DS
- * 16 - TSS
- * 17 - LDT
- * 18 - PNPBIOS support (16->32 gate)
- * 19 - PNPBIOS support
- * 20 - PNPBIOS support
- * 21 - PNPBIOS support
- * 22 - PNPBIOS support
- * 23 - APM BIOS support
- * 24 - APM BIOS support
- * 25 - APM BIOS support
- *
- * 26 - unused
- * 27 - unused
- * 28 - unused
- * 29 - unused
- * 30 - unused
- * 31 - TSS for double fault handler
- */
-#define GDT_ENTRY_TLS_ENTRIES 3
-#define GDT_ENTRY_TLS_MIN 6
-#define GDT_ENTRY_TLS_MAX (GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1)
-
-#define TLS_SIZE (GDT_ENTRY_TLS_ENTRIES * 8)
-
-#define GDT_ENTRY_DEFAULT_USER_CS 14
-#define __USER_CS (GDT_ENTRY_DEFAULT_USER_CS * 8 + 3)
-
-#define GDT_ENTRY_DEFAULT_USER_DS 15
-#define __USER_DS (GDT_ENTRY_DEFAULT_USER_DS * 8 + 3)
-
-#define GDT_ENTRY_KERNEL_BASE 12
-
-#define GDT_ENTRY_KERNEL_CS (GDT_ENTRY_KERNEL_BASE + 0)
-#define __KERNEL_CS (GDT_ENTRY_KERNEL_CS * 8 + 1)
-
-#define GDT_ENTRY_KERNEL_DS (GDT_ENTRY_KERNEL_BASE + 1)
-#define __KERNEL_DS (GDT_ENTRY_KERNEL_DS * 8 + 1)
-
-#define GDT_ENTRY_TSS (GDT_ENTRY_KERNEL_BASE + 4)
-#define GDT_ENTRY_LDT (GDT_ENTRY_KERNEL_BASE + 5)
-
-#define GDT_ENTRY_PNPBIOS_BASE (GDT_ENTRY_KERNEL_BASE + 6)
-#define GDT_ENTRY_APMBIOS_BASE (GDT_ENTRY_KERNEL_BASE + 11)
-
-#define GDT_ENTRY_DOUBLEFAULT_TSS 31
-
-/*
- * The GDT has 32 entries
- */
-#define GDT_ENTRIES 32
-
-#define GDT_SIZE (GDT_ENTRIES * 8)
-
-/* Simple and small GDT entries for booting only */
-
-#define __BOOT_CS FLAT_KERNEL_CS
-
-#define __BOOT_DS FLAT_KERNEL_DS
-
-/*
- * The interrupt descriptor table has room for 256 idt's,
- * the global descriptor table is dependent on the number
- * of tasks we can have..
- */
-#define IDT_ENTRIES 256
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/setup.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/setup.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,66 +0,0 @@
-/*
- * Just a place holder. We don't want to have to test x86 before
- * we include stuff
- */
-
-#ifndef _i386_SETUP_H
-#define _i386_SETUP_H
-
-#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
-#define PFN_DOWN(x) ((x) >> PAGE_SHIFT)
-#define PFN_PHYS(x) ((x) << PAGE_SHIFT)
-
-/*
- * Reserved space for vmalloc and iomap - defined in asm/page.h
- */
-#define MAXMEM_PFN PFN_DOWN(MAXMEM)
-#define MAX_NONPAE_PFN (1 << 20)
-
-#define PARAM_SIZE 2048
-#define COMMAND_LINE_SIZE 256
-
-#define OLD_CL_MAGIC_ADDR 0x90020
-#define OLD_CL_MAGIC 0xA33F
-#define OLD_CL_BASE_ADDR 0x90000
-#define OLD_CL_OFFSET 0x90022
-#define NEW_CL_POINTER 0x228 /* Relative to real mode data */
-
-#ifndef __ASSEMBLY__
-/*
- * This is set up by the setup-routine at boot-time
- */
-extern unsigned char boot_params[PARAM_SIZE];
-
-#define PARAM (boot_params)
-#define SCREEN_INFO (*(struct screen_info *) (PARAM+0))
-#define EXT_MEM_K (*(unsigned short *) (PARAM+2))
-#define ALT_MEM_K (*(unsigned long *) (PARAM+0x1e0))
-#define E820_MAP_NR (*(char*) (PARAM+E820NR))
-#define E820_MAP ((struct e820entry *) (PARAM+E820MAP))
-#define APM_BIOS_INFO (*(struct apm_bios_info *) (PARAM+0x40))
-#define IST_INFO (*(struct ist_info *) (PARAM+0x60))
-#define DRIVE_INFO (*(struct drive_info_struct *) (PARAM+0x80))
-#define SYS_DESC_TABLE (*(struct sys_desc_table_struct*)(PARAM+0xa0))
-#define EFI_SYSTAB ((efi_system_table_t *) *((unsigned long *)(PARAM+0x1c4)))
-#define EFI_MEMDESC_SIZE (*((unsigned long *) (PARAM+0x1c8)))
-#define EFI_MEMDESC_VERSION (*((unsigned long *) (PARAM+0x1cc)))
-#define EFI_MEMMAP ((efi_memory_desc_t *) *((unsigned long *)(PARAM+0x1d0)))
-#define EFI_MEMMAP_SIZE (*((unsigned long *) (PARAM+0x1d4)))
-#define MOUNT_ROOT_RDONLY (*(unsigned short *) (PARAM+0x1F2))
-#define RAMDISK_FLAGS (*(unsigned short *) (PARAM+0x1F8))
-#define VIDEO_MODE (*(unsigned short *) (PARAM+0x1FA))
-#define ORIG_ROOT_DEV (*(unsigned short *) (PARAM+0x1FC))
-#define AUX_DEVICE_INFO (*(unsigned char *) (PARAM+0x1FF))
-#define LOADER_TYPE (*(unsigned char *) (PARAM+0x210))
-#define KERNEL_START (*(unsigned long *) (PARAM+0x214))
-#define INITRD_START (__pa(xen_start_info.mod_start))
-#define INITRD_SIZE (xen_start_info.mod_len)
-#define EDID_INFO (*(struct edid_info *) (PARAM+0x440))
-#define EDD_NR (*(unsigned char *) (PARAM+EDDNR))
-#define EDD_MBR_SIG_NR (*(unsigned char *) (PARAM+EDD_MBR_SIG_NR_BUF))
-#define EDD_MBR_SIGNATURE ((unsigned int *) (PARAM+EDD_MBR_SIG_BUF))
-#define EDD_BUF ((struct edd_info *) (PARAM+EDDBUF))
-
-#endif /* __ASSEMBLY__ */
-
-#endif /* _i386_SETUP_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/spinlock.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/spinlock.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,250 +0,0 @@
-#ifndef __ASM_SPINLOCK_H
-#define __ASM_SPINLOCK_H
-
-#include <asm/atomic.h>
-#include <asm/rwlock.h>
-#include <asm/page.h>
-#include <linux/config.h>
-#include <linux/compiler.h>
-
-asmlinkage int printk(const char * fmt, ...)
- __attribute__ ((format (printf, 1, 2)));
-
-/*
- * Your basic SMP spinlocks, allowing only a single CPU anywhere
- */
-
-typedef struct {
- volatile unsigned int slock;
-#ifdef CONFIG_DEBUG_SPINLOCK
- unsigned magic;
-#endif
-#ifdef CONFIG_PREEMPT
- unsigned int break_lock;
-#endif
-} spinlock_t;
-
-#define SPINLOCK_MAGIC 0xdead4ead
-
-#ifdef CONFIG_DEBUG_SPINLOCK
-#define SPINLOCK_MAGIC_INIT , SPINLOCK_MAGIC
-#else
-#define SPINLOCK_MAGIC_INIT /* */
-#endif
-
-#define SPIN_LOCK_UNLOCKED (spinlock_t) { 1 SPINLOCK_MAGIC_INIT }
-
-#define spin_lock_init(x) do { *(x) = SPIN_LOCK_UNLOCKED; } while(0)
-
-/*
- * Simple spin lock operations. There are two variants, one clears IRQ's
- * on the local processor, one does not.
- *
- * We make no fairness assumptions. They have a cost.
- */
-
-#define spin_is_locked(x) (*(volatile signed char *)(&(x)->slock) <= 0)
-#define spin_unlock_wait(x) do { barrier(); } while(spin_is_locked(x))
-
-#define spin_lock_string \
- "\n1:\t" \
- "lock ; decb %0\n\t" \
- "jns 3f\n" \
- "2:\t" \
- "rep;nop\n\t" \
- "cmpb $0,%0\n\t" \
- "jle 2b\n\t" \
- "jmp 1b\n" \
- "3:\n\t"
-
-#define spin_lock_string_flags \
- "\n1:\t" \
- "lock ; decb %0\n\t" \
- "jns 4f\n\t" \
- "2:\t" \
- "testl $0x200, %1\n\t" \
- "jz 3f\n\t" \
- "#sti\n\t" \
- "3:\t" \
- "rep;nop\n\t" \
- "cmpb $0, %0\n\t" \
- "jle 3b\n\t" \
- "#cli\n\t" \
- "jmp 1b\n" \
- "4:\n\t"
-
-/*
- * This works. Despite all the confusion.
- * (except on PPro SMP or if we are using OOSTORE)
- * (PPro errata 66, 92)
- */
-
-#if !defined(CONFIG_X86_OOSTORE) && !defined(CONFIG_X86_PPRO_FENCE)
-
-#define spin_unlock_string \
- "movb $1,%0" \
- :"=m" (lock->slock) : : "memory"
-
-
-static inline void _raw_spin_unlock(spinlock_t *lock)
-{
-#ifdef CONFIG_DEBUG_SPINLOCK
- BUG_ON(lock->magic != SPINLOCK_MAGIC);
- BUG_ON(!spin_is_locked(lock));
-#endif
- __asm__ __volatile__(
- spin_unlock_string
- );
-}
-
-#else
-
-#define spin_unlock_string \
- "xchgb %b0, %1" \
- :"=q" (oldval), "=m" (lock->slock) \
- :"0" (oldval) : "memory"
-
-static inline void _raw_spin_unlock(spinlock_t *lock)
-{
- char oldval = 1;
-#ifdef CONFIG_DEBUG_SPINLOCK
- BUG_ON(lock->magic != SPINLOCK_MAGIC);
- BUG_ON(!spin_is_locked(lock));
-#endif
- __asm__ __volatile__(
- spin_unlock_string
- );
-}
-
-#endif
-
-static inline int _raw_spin_trylock(spinlock_t *lock)
-{
- char oldval;
- __asm__ __volatile__(
- "xchgb %b0,%1"
- :"=q" (oldval), "=m" (lock->slock)
- :"0" (0) : "memory");
- return oldval > 0;
-}
-
-static inline void _raw_spin_lock(spinlock_t *lock)
-{
-#ifdef CONFIG_DEBUG_SPINLOCK
- if (unlikely(lock->magic != SPINLOCK_MAGIC)) {
- printk("eip: %p\n", __builtin_return_address(0));
- BUG();
- }
-#endif
- __asm__ __volatile__(
- spin_lock_string
- :"=m" (lock->slock) : : "memory");
-}
-
-static inline void _raw_spin_lock_flags (spinlock_t *lock, unsigned long flags)
-{
-#ifdef CONFIG_DEBUG_SPINLOCK
- if (unlikely(lock->magic != SPINLOCK_MAGIC)) {
- printk("eip: %p\n", __builtin_return_address(0));
- BUG();
- }
-#endif
- __asm__ __volatile__(
- spin_lock_string_flags
- :"=m" (lock->slock) : "r" (flags) : "memory");
-}
-
-/*
- * Read-write spinlocks, allowing multiple readers
- * but only one writer.
- *
- * NOTE! it is quite common to have readers in interrupts
- * but no interrupt writers. For those circumstances we
- * can "mix" irq-safe locks - any writer needs to get a
- * irq-safe write-lock, but readers can get non-irqsafe
- * read-locks.
- */
-typedef struct {
- volatile unsigned int lock;
-#ifdef CONFIG_DEBUG_SPINLOCK
- unsigned magic;
-#endif
-#ifdef CONFIG_PREEMPT
- unsigned int break_lock;
-#endif
-} rwlock_t;
-
-#define RWLOCK_MAGIC 0xdeaf1eed
-
-#ifdef CONFIG_DEBUG_SPINLOCK
-#define RWLOCK_MAGIC_INIT , RWLOCK_MAGIC
-#else
-#define RWLOCK_MAGIC_INIT /* */
-#endif
-
-#define RW_LOCK_UNLOCKED (rwlock_t) { RW_LOCK_BIAS RWLOCK_MAGIC_INIT }
-
-#define rwlock_init(x) do { *(x) = RW_LOCK_UNLOCKED; } while(0)
-
-/**
- * read_can_lock - would read_trylock() succeed?
- * @lock: the rwlock in question.
- */
-#define read_can_lock(x) ((int)(x)->lock > 0)
-
-/**
- * write_can_lock - would write_trylock() succeed?
- * @lock: the rwlock in question.
- */
-#define write_can_lock(x) ((x)->lock == RW_LOCK_BIAS)
-
-/*
- * On x86, we implement read-write locks as a 32-bit counter
- * with the high bit (sign) being the "contended" bit.
- *
- * The inline assembly is non-obvious. Think about it.
- *
- * Changed to use the same technique as rw semaphores. See
- * semaphore.h for details. -ben
- */
-/* the spinlock helpers are in arch/i386/kernel/semaphore.c */
-
-static inline void _raw_read_lock(rwlock_t *rw)
-{
-#ifdef CONFIG_DEBUG_SPINLOCK
- BUG_ON(rw->magic != RWLOCK_MAGIC);
-#endif
- __build_read_lock(rw, "__read_lock_failed");
-}
-
-static inline void _raw_write_lock(rwlock_t *rw)
-{
-#ifdef CONFIG_DEBUG_SPINLOCK
- BUG_ON(rw->magic != RWLOCK_MAGIC);
-#endif
- __build_write_lock(rw, "__write_lock_failed");
-}
-
-#define _raw_read_unlock(rw) asm volatile("lock ; incl %0" :"=m"
((rw)->lock) : : "memory")
-#define _raw_write_unlock(rw) asm volatile("lock ; addl $" RW_LOCK_BIAS_STR
",%0":"=m" ((rw)->lock) : : "memory")
-
-static inline int _raw_read_trylock(rwlock_t *lock)
-{
- atomic_t *count = (atomic_t *)lock;
- atomic_dec(count);
- if (atomic_read(count) >= 0)
- return 1;
- atomic_inc(count);
- return 0;
-}
-
-static inline int _raw_write_trylock(rwlock_t *lock)
-{
- atomic_t *count = (atomic_t *)lock;
- if (atomic_sub_and_test(RW_LOCK_BIAS, count))
- return 1;
- atomic_add(RW_LOCK_BIAS, count);
- return 0;
-}
-
-#endif /* __ASM_SPINLOCK_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/synch_bitops.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/synch_bitops.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,140 +0,0 @@
-#ifndef __XEN_SYNCH_BITOPS_H__
-#define __XEN_SYNCH_BITOPS_H__
-
-/*
- * Copyright 1992, Linus Torvalds.
- * Heavily modified to provide guaranteed strong synchronisation
- * when communicating with Xen or other guest OSes running on other CPUs.
- */
-
-#include <linux/config.h>
-
-#define ADDR (*(volatile long *) addr)
-
-static __inline__ void synch_set_bit(int nr, volatile void * addr)
-{
- __asm__ __volatile__ (
- "lock btsl %1,%0"
- : "=m" (ADDR) : "Ir" (nr) : "memory" );
-}
-
-static __inline__ void synch_clear_bit(int nr, volatile void * addr)
-{
- __asm__ __volatile__ (
- "lock btrl %1,%0"
- : "=m" (ADDR) : "Ir" (nr) : "memory" );
-}
-
-static __inline__ void synch_change_bit(int nr, volatile void * addr)
-{
- __asm__ __volatile__ (
- "lock btcl %1,%0"
- : "=m" (ADDR) : "Ir" (nr) : "memory" );
-}
-
-static __inline__ int synch_test_and_set_bit(int nr, volatile void * addr)
-{
- int oldbit;
- __asm__ __volatile__ (
- "lock btsl %2,%1\n\tsbbl %0,%0"
- : "=r" (oldbit), "=m" (ADDR) : "Ir" (nr) : "memory");
- return oldbit;
-}
-
-static __inline__ int synch_test_and_clear_bit(int nr, volatile void * addr)
-{
- int oldbit;
- __asm__ __volatile__ (
- "lock btrl %2,%1\n\tsbbl %0,%0"
- : "=r" (oldbit), "=m" (ADDR) : "Ir" (nr) : "memory");
- return oldbit;
-}
-
-static __inline__ int synch_test_and_change_bit(int nr, volatile void * addr)
-{
- int oldbit;
-
- __asm__ __volatile__ (
- "lock btcl %2,%1\n\tsbbl %0,%0"
- : "=r" (oldbit), "=m" (ADDR) : "Ir" (nr) : "memory");
- return oldbit;
-}
-
-struct __synch_xchg_dummy { unsigned long a[100]; };
-#define __synch_xg(x) ((struct __synch_xchg_dummy *)(x))
-
-#define synch_cmpxchg(ptr, old, new) \
-((__typeof__(*(ptr)))__synch_cmpxchg((ptr),\
- (unsigned long)(old), \
- (unsigned long)(new), \
- sizeof(*(ptr))))
-
-static inline unsigned long __synch_cmpxchg(volatile void *ptr,
- unsigned long old,
- unsigned long new, int size)
-{
- unsigned long prev;
- switch (size) {
- case 1:
- __asm__ __volatile__("lock; cmpxchgb %b1,%2"
- : "=a"(prev)
- : "q"(new), "m"(*__synch_xg(ptr)),
- "0"(old)
- : "memory");
- return prev;
- case 2:
- __asm__ __volatile__("lock; cmpxchgw %w1,%2"
- : "=a"(prev)
- : "q"(new), "m"(*__synch_xg(ptr)),
- "0"(old)
- : "memory");
- return prev;
-#ifdef CONFIG_X86_64
- case 4:
- __asm__ __volatile__("lock; cmpxchgl %k1,%2"
- : "=a"(prev)
- : "q"(new), "m"(*__synch_xg(ptr)),
- "0"(old)
- : "memory");
- return prev;
- case 8:
- __asm__ __volatile__("lock; cmpxchgq %1,%2"
- : "=a"(prev)
- : "q"(new), "m"(*__synch_xg(ptr)),
- "0"(old)
- : "memory");
- return prev;
-#else
- case 4:
- __asm__ __volatile__("lock; cmpxchgl %1,%2"
- : "=a"(prev)
- : "q"(new), "m"(*__synch_xg(ptr)),
- "0"(old)
- : "memory");
- return prev;
-#endif
- }
- return old;
-}
-
-static __inline__ int synch_const_test_bit(int nr, const volatile void * addr)
-{
- return ((1UL << (nr & 31)) &
- (((const volatile unsigned int *) addr)[nr >> 5])) != 0;
-}
-
-static __inline__ int synch_var_test_bit(int nr, volatile void * addr)
-{
- int oldbit;
- __asm__ __volatile__ (
- "btl %2,%1\n\tsbbl %0,%0"
- : "=r" (oldbit) : "m" (ADDR), "Ir" (nr) );
- return oldbit;
-}
-
-#define synch_test_bit(nr,addr) \
-(__builtin_constant_p(nr) ? \
- synch_const_test_bit((nr),(addr)) : \
- synch_var_test_bit((nr),(addr)))
-
-#endif /* __XEN_SYNCH_BITOPS_H__ */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/system.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/system.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,577 +0,0 @@
-#ifndef __ASM_SYSTEM_H
-#define __ASM_SYSTEM_H
-
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/bitops.h>
-#include <asm-xen/synch_bitops.h>
-#include <asm/segment.h>
-#include <asm/cpufeature.h>
-#include <asm-xen/hypervisor.h>
-#include <asm/smp_alt.h>
-
-#ifdef __KERNEL__
-
-struct task_struct; /* one of the stranger aspects of C forward
declarations.. */
-extern struct task_struct * FASTCALL(__switch_to(struct task_struct *prev,
struct task_struct *next));
-
-#define switch_to(prev,next,last) do { \
- unsigned long esi,edi; \
- asm volatile("pushfl\n\t" \
- "pushl %%ebp\n\t" \
- "movl %%esp,%0\n\t" /* save ESP */ \
- "movl %5,%%esp\n\t" /* restore ESP */ \
- "movl $1f,%1\n\t" /* save EIP */ \
- "pushl %6\n\t" /* restore EIP */ \
- "jmp __switch_to\n" \
- "1:\t" \
- "popl %%ebp\n\t" \
- "popfl" \
- :"=m" (prev->thread.esp),"=m" (prev->thread.eip), \
- "=a" (last),"=S" (esi),"=D" (edi) \
- :"m" (next->thread.esp),"m" (next->thread.eip), \
- "2" (prev), "d" (next)); \
-} while (0)
-
-#define _set_base(addr,base) do { unsigned long __pr; \
-__asm__ __volatile__ ("movw %%dx,%1\n\t" \
- "rorl $16,%%edx\n\t" \
- "movb %%dl,%2\n\t" \
- "movb %%dh,%3" \
- :"=&d" (__pr) \
- :"m" (*((addr)+2)), \
- "m" (*((addr)+4)), \
- "m" (*((addr)+7)), \
- "0" (base) \
- ); } while(0)
-
-#define _set_limit(addr,limit) do { unsigned long __lr; \
-__asm__ __volatile__ ("movw %%dx,%1\n\t" \
- "rorl $16,%%edx\n\t" \
- "movb %2,%%dh\n\t" \
- "andb $0xf0,%%dh\n\t" \
- "orb %%dh,%%dl\n\t" \
- "movb %%dl,%2" \
- :"=&d" (__lr) \
- :"m" (*(addr)), \
- "m" (*((addr)+6)), \
- "0" (limit) \
- ); } while(0)
-
-#define set_base(ldt,base) _set_base( ((char *)&(ldt)) , (base) )
-#define set_limit(ldt,limit) _set_limit( ((char *)&(ldt)) , ((limit)-1)>>12 )
-
-static inline unsigned long _get_base(char * addr)
-{
- unsigned long __base;
- __asm__("movb %3,%%dh\n\t"
- "movb %2,%%dl\n\t"
- "shll $16,%%edx\n\t"
- "movw %1,%%dx"
- :"=&d" (__base)
- :"m" (*((addr)+2)),
- "m" (*((addr)+4)),
- "m" (*((addr)+7)));
- return __base;
-}
-
-#define get_base(ldt) _get_base( ((char *)&(ldt)) )
-
-/*
- * Load a segment. Fall back on loading the zero
- * segment if something goes wrong..
- */
-#define loadsegment(seg,value) \
- asm volatile("\n" \
- "1:\t" \
- "movl %0,%%" #seg "\n" \
- "2:\n" \
- ".section .fixup,\"ax\"\n" \
- "3:\t" \
- "pushl $0\n\t" \
- "popl %%" #seg "\n\t" \
- "jmp 2b\n" \
- ".previous\n" \
- ".section __ex_table,\"a\"\n\t" \
- ".align 4\n\t" \
- ".long 1b,3b\n" \
- ".previous" \
- : :"m" (*(unsigned int *)&(value)))
-
-/*
- * Save a segment register away
- */
-#define savesegment(seg, value) \
- asm volatile("movl %%" #seg ",%0":"=m" (*(int *)&(value)))
-
-/*
- * Clear and set 'TS' bit respectively
- */
-#define clts() (HYPERVISOR_fpu_taskswitch(0))
-#define read_cr0() ({ \
- unsigned int __dummy; \
- __asm__( \
- "movl %%cr0,%0\n\t" \
- :"=r" (__dummy)); \
- __dummy; \
-})
-#define write_cr0(x) \
- __asm__("movl %0,%%cr0": :"r" (x));
-
-#define read_cr4() ({ \
- unsigned int __dummy; \
- __asm__( \
- "movl %%cr4,%0\n\t" \
- :"=r" (__dummy)); \
- __dummy; \
-})
-#define write_cr4(x) \
- __asm__("movl %0,%%cr4": :"r" (x));
-#define stts() (HYPERVISOR_fpu_taskswitch(1))
-
-#endif /* __KERNEL__ */
-
-#define wbinvd() \
- __asm__ __volatile__ ("wbinvd": : :"memory");
-
-static inline unsigned long get_limit(unsigned long segment)
-{
- unsigned long __limit;
- __asm__("lsll %1,%0"
- :"=r" (__limit):"r" (segment));
- return __limit+1;
-}
-
-#define nop() __asm__ __volatile__ ("nop")
-
-#define xchg(ptr,v) ((__typeof__(*(ptr)))__xchg((unsigned
long)(v),(ptr),sizeof(*(ptr))))
-
-#define tas(ptr) (xchg((ptr),1))
-
-struct __xchg_dummy { unsigned long a[100]; };
-#define __xg(x) ((struct __xchg_dummy *)(x))
-
-
-/*
- * The semantics of XCHGCMP8B are a bit strange, this is why
- * there is a loop and the loading of %%eax and %%edx has to
- * be inside. This inlines well in most cases, the cached
- * cost is around ~38 cycles. (in the future we might want
- * to do an SIMD/3DNOW!/MMX/FPU 64-bit store here, but that
- * might have an implicit FPU-save as a cost, so it's not
- * clear which path to go.)
- *
- * cmpxchg8b must be used with the lock prefix here to allow
- * the instruction to be executed atomically, see page 3-102
- * of the instruction set reference 24319102.pdf. We need
- * the reader side to see the coherent 64bit value.
- */
-static inline void __set_64bit (unsigned long long * ptr,
- unsigned int low, unsigned int high)
-{
- __asm__ __volatile__ (
- "\n1:\t"
- "movl (%0), %%eax\n\t"
- "movl 4(%0), %%edx\n\t"
- "lock cmpxchg8b (%0)\n\t"
- "jnz 1b"
- : /* no outputs */
- : "D"(ptr),
- "b"(low),
- "c"(high)
- : "ax","dx","memory");
-}
-
-static inline void __set_64bit_constant (unsigned long long *ptr,
- unsigned long long value)
-{
- __set_64bit(ptr,(unsigned int)(value), (unsigned int)((value)>>32ULL));
-}
-#define ll_low(x) *(((unsigned int*)&(x))+0)
-#define ll_high(x) *(((unsigned int*)&(x))+1)
-
-static inline void __set_64bit_var (unsigned long long *ptr,
- unsigned long long value)
-{
- __set_64bit(ptr,ll_low(value), ll_high(value));
-}
-
-#define set_64bit(ptr,value) \
-(__builtin_constant_p(value) ? \
- __set_64bit_constant(ptr, value) : \
- __set_64bit_var(ptr, value) )
-
-#define _set_64bit(ptr,value) \
-(__builtin_constant_p(value) ? \
- __set_64bit(ptr, (unsigned int)(value), (unsigned int)((value)>>32ULL) ) : \
- __set_64bit(ptr, ll_low(value), ll_high(value)) )
-
-/*
- * Note: no "lock" prefix even on SMP: xchg always implies lock anyway
- * Note 2: xchg has side effect, so that attribute volatile is necessary,
- * but generally the primitive is invalid, *ptr is output argument. --ANK
- */
-static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int
size)
-{
- switch (size) {
- case 1:
- __asm__ __volatile__("xchgb %b0,%1"
- :"=q" (x)
- :"m" (*__xg(ptr)), "0" (x)
- :"memory");
- break;
- case 2:
- __asm__ __volatile__("xchgw %w0,%1"
- :"=r" (x)
- :"m" (*__xg(ptr)), "0" (x)
- :"memory");
- break;
- case 4:
- __asm__ __volatile__("xchgl %0,%1"
- :"=r" (x)
- :"m" (*__xg(ptr)), "0" (x)
- :"memory");
- break;
- }
- return x;
-}
-
-/*
- * Atomic compare and exchange. Compare OLD with MEM, if identical,
- * store NEW in MEM. Return the initial value in MEM. Success is
- * indicated by comparing RETURN with OLD.
- */
-
-#ifdef CONFIG_X86_CMPXCHG
-#define __HAVE_ARCH_CMPXCHG 1
-#endif
-
-static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
- unsigned long new, int size)
-{
- unsigned long prev;
- switch (size) {
- case 1:
- __asm__ __volatile__(LOCK "cmpxchgb %b1,%2"
- : "=a"(prev)
- : "q"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- case 2:
- __asm__ __volatile__(LOCK "cmpxchgw %w1,%2"
- : "=a"(prev)
- : "q"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- case 4:
- __asm__ __volatile__(LOCK "cmpxchgl %1,%2"
- : "=a"(prev)
- : "q"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- }
- return old;
-}
-
-#define cmpxchg(ptr,o,n)\
- ((__typeof__(*(ptr)))__cmpxchg((ptr),(unsigned long)(o),\
- (unsigned long)(n),sizeof(*(ptr))))
-
-#ifdef __KERNEL__
-struct alt_instr {
- __u8 *instr; /* original instruction */
- __u8 *replacement;
- __u8 cpuid; /* cpuid bit set for replacement */
- __u8 instrlen; /* length of original instruction */
- __u8 replacementlen; /* length of new instruction, <= instrlen */
- __u8 pad;
-};
-#endif
-
-/*
- * Alternative instructions for different CPU types or capabilities.
- *
- * This allows to use optimized instructions even on generic binary
- * kernels.
- *
- * length of oldinstr must be longer or equal the length of newinstr
- * It can be padded with nops as needed.
- *
- * For non barrier like inlines please define new variants
- * without volatile and memory clobber.
- */
-#define alternative(oldinstr, newinstr, feature) \
- asm volatile ("661:\n\t" oldinstr "\n662:\n" \
- ".section .altinstructions,\"a\"\n" \
- " .align 4\n" \
- " .long 661b\n" /* label */ \
- " .long 663f\n" /* new instruction */
\
- " .byte %c0\n" /* feature bit */ \
- " .byte 662b-661b\n" /* sourcelen */ \
- " .byte 664f-663f\n" /* replacementlen */ \
- ".previous\n"
\
- ".section .altinstr_replacement,\"ax\"\n"
\
- "663:\n\t" newinstr "\n664:\n" /* replacement */ \
- ".previous" :: "i" (feature) : "memory")
-
-/*
- * Alternative inline assembly with input.
- *
- * Pecularities:
- * No memory clobber here.
- * Argument numbers start with 1.
- * Best is to use constraints that are fixed size (like (%1) ... "r")
- * If you use variable sized constraints like "m" or "g" in the
- * replacement maake sure to pad to the worst case length.
- */
-#define alternative_input(oldinstr, newinstr, feature, input...)
\
- asm volatile ("661:\n\t" oldinstr "\n662:\n"
\
- ".section .altinstructions,\"a\"\n"
\
- " .align 4\n"
\
- " .long 661b\n" /* label */
\
- " .long 663f\n" /* new instruction */
\
- " .byte %c0\n" /* feature bit */
\
- " .byte 662b-661b\n" /* sourcelen */
\
- " .byte 664f-663f\n" /* replacementlen */
\
- ".previous\n"
\
- ".section .altinstr_replacement,\"ax\"\n"
\
- "663:\n\t" newinstr "\n664:\n" /* replacement */
\
- ".previous" :: "i" (feature), ##input)
-
-/*
- * Force strict CPU ordering.
- * And yes, this is required on UP too when we're talking
- * to devices.
- *
- * For now, "wmb()" doesn't actually do anything, as all
- * Intel CPU's follow what Intel calls a *Processor Order*,
- * in which all writes are seen in the program order even
- * outside the CPU.
- *
- * I expect future Intel CPU's to have a weaker ordering,
- * but I'd also expect them to finally get their act together
- * and add some real memory barriers if so.
- *
- * Some non intel clones support out of order store. wmb() ceases to be a
- * nop for these.
- */
-
-
-/*
- * Actually only lfence would be needed for mb() because all stores done
- * by the kernel should be already ordered. But keep a full barrier for now.
- */
-
-#define mb() alternative("lock; addl $0,0(%%esp)", "mfence", X86_FEATURE_XMM2)
-#define rmb() alternative("lock; addl $0,0(%%esp)", "lfence", X86_FEATURE_XMM2)
-
-/**
- * read_barrier_depends - Flush all pending reads that subsequents reads
- * depend on.
- *
- * No data-dependent reads from memory-like regions are ever reordered
- * over this barrier. All reads preceding this primitive are guaranteed
- * to access memory (but not necessarily other CPUs' caches) before any
- * reads following this primitive that depend on the data return by
- * any of the preceding reads. This primitive is much lighter weight than
- * rmb() on most CPUs, and is never heavier weight than is
- * rmb().
- *
- * These ordering constraints are respected by both the local CPU
- * and the compiler.
- *
- * Ordering is not guaranteed by anything other than these primitives,
- * not even by data dependencies. See the documentation for
- * memory_barrier() for examples and URLs to more information.
- *
- * For example, the following code would force ordering (the initial
- * value of "a" is zero, "b" is one, and "p" is "&a"):
- *
- * <programlisting>
- * CPU 0 CPU 1
- *
- * b = 2;
- * memory_barrier();
- * p = &b; q = p;
- * read_barrier_depends();
- * d = *q;
- * </programlisting>
- *
- * because the read of "*q" depends on the read of "p" and these
- * two reads are separated by a read_barrier_depends(). However,
- * the following code, with the same initial values for "a" and "b":
- *
- * <programlisting>
- * CPU 0 CPU 1
- *
- * a = 2;
- * memory_barrier();
- * b = 3; y = b;
- * read_barrier_depends();
- * x = a;
- * </programlisting>
- *
- * does not enforce ordering, since there is no data dependency between
- * the read of "a" and the read of "b". Therefore, on some CPUs, such
- * as Alpha, "y" could be set to 3 and "x" to 0. Use rmb()
- * in cases like thiswhere there are no data dependencies.
- **/
-
-#define read_barrier_depends() do { } while(0)
-
-#ifdef CONFIG_X86_OOSTORE
-/* Actually there are no OOO store capable CPUs for now that do SSE,
- but make it already an possibility. */
-#define wmb() alternative("lock; addl $0,0(%%esp)", "sfence", X86_FEATURE_XMM)
-#else
-#define wmb() __asm__ __volatile__ ("": : :"memory")
-#endif
-
-#ifdef CONFIG_SMP
-#define smp_wmb() wmb()
-#if defined(CONFIG_SMP_ALTERNATIVES) && !defined(MODULE)
-#define smp_alt_mb(instr) \
-__asm__ __volatile__("6667:\nnop\nnop\nnop\nnop\nnop\nnop\n6668:\n" \
- ".section __smp_alternatives,\"a\"\n" \
- ".long 6667b\n" \
- ".long 6673f\n" \
- ".previous\n" \
- ".section __smp_replacements,\"a\"\n" \
- "6673:.byte 6668b-6667b\n" \
- ".byte 6670f-6669f\n" \
- ".byte 6671f-6670f\n" \
- ".byte 0\n" \
- ".byte %c0\n" \
- "6669:lock;addl $0,0(%%esp)\n" \
- "6670:" instr "\n" \
- "6671:\n" \
- ".previous\n" \
- : \
- : "i" (X86_FEATURE_XMM2) \
- : "memory")
-#define smp_rmb() smp_alt_mb("lfence")
-#define smp_mb() smp_alt_mb("mfence")
-#define set_mb(var, value) do { \
-unsigned long __set_mb_temp; \
-__asm__ __volatile__("6667:movl %1, %0\n6668:\n" \
- ".section __smp_alternatives,\"a\"\n" \
- ".long 6667b\n" \
- ".long 6673f\n" \
- ".previous\n" \
- ".section __smp_replacements,\"a\"\n" \
- "6673: .byte 6668b-6667b\n" \
- ".byte 6670f-6669f\n" \
- ".byte 0\n" \
- ".byte 6671f-6670f\n" \
- ".byte -1\n" \
- "6669: xchg %1, %0\n" \
- "6670:movl %1, %0\n" \
- "6671:\n" \
- ".previous\n" \
- : "=m" (var), "=r" (__set_mb_temp) \
- : "1" (value) \
- : "memory"); } while (0)
-#else
-#define smp_rmb() rmb()
-#define smp_mb() mb()
-#define set_mb(var, value) do { xchg(&var, value); } while (0)
-#endif
-#define smp_read_barrier_depends() read_barrier_depends()
-#else
-#define smp_mb() barrier()
-#define smp_rmb() barrier()
-#define smp_wmb() barrier()
-#define smp_read_barrier_depends() do { } while(0)
-#define set_mb(var, value) do { var = value; barrier(); } while (0)
-#endif
-
-#define set_wmb(var, value) do { var = value; wmb(); } while (0)
-
-/* interrupt control.. */
-
-/*
- * The use of 'barrier' in the following reflects their use as local-lock
- * operations. Reentrancy must be prevented (e.g., __cli()) /before/ following
- * critical operations are executed. All critical operations must complete
- * /before/ reentrancy is permitted (e.g., __sti()). Alpha architecture also
- * includes these barriers, for example.
- */
-
-#define __cli()
\
-do { \
- vcpu_info_t *_vcpu; \
- preempt_disable(); \
- _vcpu = &HYPERVISOR_shared_info->vcpu_data[smp_processor_id()]; \
- _vcpu->evtchn_upcall_mask = 1; \
- preempt_enable_no_resched(); \
- barrier(); \
-} while (0)
-
-#define __sti()
\
-do { \
- vcpu_info_t *_vcpu; \
- barrier(); \
- preempt_disable(); \
- _vcpu = &HYPERVISOR_shared_info->vcpu_data[smp_processor_id()]; \
- _vcpu->evtchn_upcall_mask = 0; \
- barrier(); /* unmask then check (avoid races) */ \
- if ( unlikely(_vcpu->evtchn_upcall_pending) ) \
- force_evtchn_callback(); \
- preempt_enable(); \
-} while (0)
-
-#define __save_flags(x)
\
-do { \
- vcpu_info_t *_vcpu; \
- _vcpu = &HYPERVISOR_shared_info->vcpu_data[smp_processor_id()]; \
- (x) = _vcpu->evtchn_upcall_mask; \
-} while (0)
-
-#define __restore_flags(x) \
-do { \
- vcpu_info_t *_vcpu; \
- barrier(); \
- preempt_disable(); \
- _vcpu = &HYPERVISOR_shared_info->vcpu_data[smp_processor_id()]; \
- if ((_vcpu->evtchn_upcall_mask = (x)) == 0) { \
- barrier(); /* unmask then check (avoid races) */ \
- if ( unlikely(_vcpu->evtchn_upcall_pending) ) \
- force_evtchn_callback(); \
- preempt_enable(); \
- } else \
- preempt_enable_no_resched(); \
-} while (0)
-
-#define safe_halt() ((void)0)
-
-#define __save_and_cli(x) \
-do { \
- vcpu_info_t *_vcpu; \
- preempt_disable(); \
- _vcpu = &HYPERVISOR_shared_info->vcpu_data[smp_processor_id()]; \
- (x) = _vcpu->evtchn_upcall_mask; \
- _vcpu->evtchn_upcall_mask = 1; \
- preempt_enable_no_resched(); \
- barrier(); \
-} while (0)
-
-#define local_irq_save(x) __save_and_cli(x)
-#define local_irq_restore(x) __restore_flags(x)
-#define local_save_flags(x) __save_flags(x)
-#define local_irq_disable() __cli()
-#define local_irq_enable() __sti()
-
-#define irqs_disabled() \
- HYPERVISOR_shared_info->vcpu_data[smp_processor_id()].evtchn_upcall_mask
-
-/*
- * disable hlt during certain critical i/o operations
- */
-#define HAVE_DISABLE_HLT
-void disable_hlt(void);
-void enable_hlt(void);
-
-extern int es7000_plat;
-void cpu_idle_wait(void);
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/tlbflush.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/tlbflush.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,102 +0,0 @@
-#ifndef _I386_TLBFLUSH_H
-#define _I386_TLBFLUSH_H
-
-#include <linux/config.h>
-#include <linux/mm.h>
-#include <asm/processor.h>
-
-#define __flush_tlb() xen_tlb_flush()
-#define __flush_tlb_global() xen_tlb_flush()
-#define __flush_tlb_all() xen_tlb_flush()
-
-extern unsigned long pgkern_mask;
-
-#define cpu_has_invlpg (boot_cpu_data.x86 > 3)
-
-#define __flush_tlb_single(addr) xen_invlpg(addr)
-
-#define __flush_tlb_one(addr) __flush_tlb_single(addr)
-
-/*
- * TLB flushing:
- *
- * - flush_tlb() flushes the current mm struct TLBs
- * - flush_tlb_all() flushes all processes TLBs
- * - flush_tlb_mm(mm) flushes the specified mm context TLB's
- * - flush_tlb_page(vma, vmaddr) flushes one page
- * - flush_tlb_range(vma, start, end) flushes a range of pages
- * - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
- * - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
- *
- * ..but the i386 has somewhat limited tlb flushing capabilities,
- * and page-granular flushes are available only on i486 and up.
- */
-
-#ifndef CONFIG_SMP
-
-#define flush_tlb() __flush_tlb()
-#define flush_tlb_all() __flush_tlb_all()
-#define local_flush_tlb() __flush_tlb()
-
-static inline void flush_tlb_mm(struct mm_struct *mm)
-{
- if (mm == current->active_mm)
- __flush_tlb();
-}
-
-static inline void flush_tlb_page(struct vm_area_struct *vma,
- unsigned long addr)
-{
- if (vma->vm_mm == current->active_mm)
- __flush_tlb_one(addr);
-}
-
-static inline void flush_tlb_range(struct vm_area_struct *vma,
- unsigned long start, unsigned long end)
-{
- if (vma->vm_mm == current->active_mm)
- __flush_tlb();
-}
-
-#else
-
-#include <asm/smp.h>
-
-#define local_flush_tlb() \
- __flush_tlb()
-
-extern void flush_tlb_all(void);
-extern void flush_tlb_current_task(void);
-extern void flush_tlb_mm(struct mm_struct *);
-extern void flush_tlb_page(struct vm_area_struct *, unsigned long);
-
-#define flush_tlb() flush_tlb_current_task()
-
-static inline void flush_tlb_range(struct vm_area_struct * vma, unsigned long
start, unsigned long end)
-{
- flush_tlb_mm(vma->vm_mm);
-}
-
-#define TLBSTATE_OK 1
-#define TLBSTATE_LAZY 2
-
-struct tlb_state
-{
- struct mm_struct *active_mm;
- int state;
- char __cacheline_padding[L1_CACHE_BYTES-8];
-};
-DECLARE_PER_CPU(struct tlb_state, cpu_tlbstate);
-
-
-#endif
-
-#define flush_tlb_kernel_range(start, end) flush_tlb_all()
-
-static inline void flush_tlb_pgtables(struct mm_struct *mm,
- unsigned long start, unsigned long end)
-{
- /* i386 does not keep any page table caches in TLB */
-}
-
-#endif /* _I386_TLBFLUSH_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/vga.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/vga.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,20 +0,0 @@
-/*
- * Access to VGA videoram
- *
- * (c) 1998 Martin Mares <mj@xxxxxx>
- */
-
-#ifndef _LINUX_ASM_VGA_H_
-#define _LINUX_ASM_VGA_H_
-
-/*
- * On the PC, we can just recalculate addresses and then
- * access the videoram directly without any black magic.
- */
-
-#define VGA_MAP_MEM(x) (unsigned long)isa_bus_to_virt(x)
-
-#define vga_readb(x) (*(x))
-#define vga_writeb(x,y) (*(y) = (x))
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/arch_hooks.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/arch_hooks.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,27 +0,0 @@
-#ifndef _ASM_ARCH_HOOKS_H
-#define _ASM_ARCH_HOOKS_H
-
-#include <linux/interrupt.h>
-
-/*
- * linux/include/asm/arch_hooks.h
- *
- * define the architecture specific hooks
- */
-
-/* these aren't arch hooks, they are generic routines
- * that can be used by the hooks */
-extern void init_ISA_irqs(void);
-extern void apic_intr_init(void);
-extern void smp_intr_init(void);
-extern irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs
*regs);
-
-/* these are the defined hooks */
-extern void intr_init_hook(void);
-extern void pre_intr_init_hook(void);
-extern void pre_setup_arch_hook(void);
-extern void trap_init_hook(void);
-extern void time_init_hook(void);
-extern void mca_nmi_hook(void);
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/bootsetup.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/bootsetup.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,41 +0,0 @@
-
-#ifndef _X86_64_BOOTSETUP_H
-#define _X86_64_BOOTSETUP_H 1
-
-extern char x86_boot_params[2048];
-
-/*
- * This is set up by the setup-routine at boot-time
- */
-#define PARAM ((unsigned char *)x86_boot_params)
-#define SCREEN_INFO (*(struct screen_info *) (PARAM+0))
-#define EXT_MEM_K (*(unsigned short *) (PARAM+2))
-#define ALT_MEM_K (*(unsigned int *) (PARAM+0x1e0))
-#define E820_MAP_NR (*(char*) (PARAM+E820NR))
-#define E820_MAP ((struct e820entry *) (PARAM+E820MAP))
-#define APM_BIOS_INFO (*(struct apm_bios_info *) (PARAM+0x40))
-#define DRIVE_INFO (*(struct drive_info_struct *) (PARAM+0x80))
-#define SYS_DESC_TABLE (*(struct sys_desc_table_struct*)(PARAM+0xa0))
-#define MOUNT_ROOT_RDONLY (*(unsigned short *) (PARAM+0x1F2))
-#define RAMDISK_FLAGS (*(unsigned short *) (PARAM+0x1F8))
-#define SAVED_VIDEO_MODE (*(unsigned short *) (PARAM+0x1FA))
-#define ORIG_ROOT_DEV (*(unsigned short *) (PARAM+0x1FC))
-#define AUX_DEVICE_INFO (*(unsigned char *) (PARAM+0x1FF))
-#define LOADER_TYPE (*(unsigned char *) (PARAM+0x210))
-#define KERNEL_START (*(unsigned int *) (PARAM+0x214))
-
-#define INITRD_START (__pa(xen_start_info.mod_start))
-#define INITRD_SIZE (xen_start_info.mod_len)
-#define EDID_INFO (*(struct edid_info *) (PARAM+0x440))
-
-#define EDD_NR (*(unsigned char *) (PARAM+EDDNR))
-#define EDD_MBR_SIG_NR (*(unsigned char *) (PARAM+EDD_MBR_SIG_NR_BUF))
-#define EDD_MBR_SIGNATURE ((unsigned int *) (PARAM+EDD_MBR_SIG_BUF))
-#define EDD_BUF ((struct edd_info *) (PARAM+EDDBUF))
-#define COMMAND_LINE saved_command_line
-
-#define RAMDISK_IMAGE_START_MASK 0x07FF
-#define RAMDISK_PROMPT_FLAG 0x8000
-#define RAMDISK_LOAD_FLAG 0x4000
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/desc.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/desc.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,240 +0,0 @@
-/* Written 2000 by Andi Kleen */
-#ifndef __ARCH_DESC_H
-#define __ARCH_DESC_H
-
-#include <linux/threads.h>
-#include <asm/ldt.h>
-
-#ifndef __ASSEMBLY__
-
-#include <linux/string.h>
-#include <asm/segment.h>
-#include <asm/mmu.h>
-
-// 8 byte segment descriptor
-struct desc_struct {
- u16 limit0;
- u16 base0;
- unsigned base1 : 8, type : 4, s : 1, dpl : 2, p : 1;
- unsigned limit : 4, avl : 1, l : 1, d : 1, g : 1, base2 : 8;
-} __attribute__((packed));
-
-struct n_desc_struct {
- unsigned int a,b;
-};
-
-enum {
- GATE_INTERRUPT = 0xE,
- GATE_TRAP = 0xF,
- GATE_CALL = 0xC,
-};
-
-// 16byte gate
-struct gate_struct {
- u16 offset_low;
- u16 segment;
- unsigned ist : 3, zero0 : 5, type : 5, dpl : 2, p : 1;
- u16 offset_middle;
- u32 offset_high;
- u32 zero1;
-} __attribute__((packed));
-
-#define PTR_LOW(x) ((unsigned long)(x) & 0xFFFF)
-#define PTR_MIDDLE(x) (((unsigned long)(x) >> 16) & 0xFFFF)
-#define PTR_HIGH(x) ((unsigned long)(x) >> 32)
-
-enum {
- DESC_TSS = 0x9,
- DESC_LDT = 0x2,
-};
-
-// LDT or TSS descriptor in the GDT. 16 bytes.
-struct ldttss_desc {
- u16 limit0;
- u16 base0;
- unsigned base1 : 8, type : 5, dpl : 2, p : 1;
- unsigned limit1 : 4, zero0 : 3, g : 1, base2 : 8;
- u32 base3;
- u32 zero1;
-} __attribute__((packed));
-
-struct desc_ptr {
- unsigned short size;
- unsigned long address;
-} __attribute__((packed)) ;
-
-extern struct desc_ptr idt_descr, cpu_gdt_descr[NR_CPUS];
-
-extern struct desc_struct cpu_gdt_table[NR_CPUS][GDT_ENTRIES];
-
-#define get_cpu_gdt_table(_cpu) ((struct desc_struct
*)(cpu_gdt_descr[(_cpu)].address))
-
-#define load_TR_desc() asm volatile("ltr %w0"::"r" (GDT_ENTRY_TSS*8))
-#define load_LDT_desc() asm volatile("lldt %w0"::"r" (GDT_ENTRY_LDT*8))
-
-static inline void clear_LDT(void)
-{
- int cpu = get_cpu();
-
- /*
- * NB. We load the default_ldt for lcall7/27 handling on demand, as
- * it slows down context switching. Noone uses it anyway.
- */
- cpu = cpu; /* XXX avoid compiler warning */
- xen_set_ldt(0UL, 0);
- put_cpu();
-}
-
-/*
- * This is the ldt that every process will get unless we need
- * something other than this.
- */
-extern struct desc_struct default_ldt[];
-extern struct gate_struct idt_table[];
-
-static inline void _set_gate(void *adr, unsigned type, unsigned long func,
unsigned dpl, unsigned ist)
-{
- struct gate_struct s;
- s.offset_low = PTR_LOW(func);
- s.segment = __KERNEL_CS;
- s.ist = ist;
- s.p = 1;
- s.dpl = dpl;
- s.zero0 = 0;
- s.zero1 = 0;
- s.type = type;
- s.offset_middle = PTR_MIDDLE(func);
- s.offset_high = PTR_HIGH(func);
- /* does not need to be atomic because it is only done once at setup
time */
- memcpy(adr, &s, 16);
-}
-
-static inline void set_intr_gate(int nr, void *func)
-{
- _set_gate(&idt_table[nr], GATE_INTERRUPT, (unsigned long) func, 0, 0);
-}
-
-static inline void set_intr_gate_ist(int nr, void *func, unsigned ist)
-{
- _set_gate(&idt_table[nr], GATE_INTERRUPT, (unsigned long) func, 0,
ist);
-}
-
-static inline void set_system_gate(int nr, void *func)
-{
- _set_gate(&idt_table[nr], GATE_INTERRUPT, (unsigned long) func, 3, 0);
-}
-
-static inline void set_tssldt_descriptor(void *ptr, unsigned long tss,
unsigned type,
- unsigned size)
-{
- struct ldttss_desc d;
- memset(&d,0,sizeof(d));
- d.limit0 = size & 0xFFFF;
- d.base0 = PTR_LOW(tss);
- d.base1 = PTR_MIDDLE(tss) & 0xFF;
- d.type = type;
- d.p = 1;
- d.limit1 = (size >> 16) & 0xF;
- d.base2 = (PTR_MIDDLE(tss) >> 8) & 0xFF;
- d.base3 = PTR_HIGH(tss);
- memcpy(ptr, &d, 16);
-}
-
-static inline void set_tss_desc(unsigned cpu, void *addr)
-{
- set_tssldt_descriptor((struct ldttss_desc
*)&get_cpu_gdt_table(cpu)[GDT_ENTRY_TSS],
- (unsigned long)addr,
- DESC_TSS,
- sizeof(struct tss_struct) - 1);
-}
-
-static inline void set_ldt_desc(unsigned cpu, void *addr, int size)
-{
- set_tssldt_descriptor((struct ldttss_desc
*)&get_cpu_gdt_table(cpu)[GDT_ENTRY_LDT],
- (unsigned long)addr,
- DESC_LDT, size * 8 - 1);
-}
-
-static inline void set_seg_base(unsigned cpu, int entry, void *base)
-{
- struct desc_struct *d = (struct desc_struct
*)&get_cpu_gdt_table(cpu)[entry];
- u32 addr = (u32)(u64)base;
- BUG_ON((u64)base >> 32);
- d->base0 = addr & 0xffff;
- d->base1 = (addr >> 16) & 0xff;
- d->base2 = (addr >> 24) & 0xff;
-}
-
-#define LDT_entry_a(info) \
- ((((info)->base_addr & 0x0000ffff) << 16) | ((info)->limit & 0x0ffff))
-/* Don't allow setting of the lm bit. It is useless anyways because
- 64bit system calls require __USER_CS. */
-#define LDT_entry_b(info) \
- (((info)->base_addr & 0xff000000) | \
- (((info)->base_addr & 0x00ff0000) >> 16) | \
- ((info)->limit & 0xf0000) | \
- (((info)->read_exec_only ^ 1) << 9) | \
- ((info)->contents << 10) | \
- (((info)->seg_not_present ^ 1) << 15) | \
- ((info)->seg_32bit << 22) | \
- ((info)->limit_in_pages << 23) | \
- ((info)->useable << 20) | \
- /* ((info)->lm << 21) | */ \
- 0x7000)
-
-#define LDT_empty(info) (\
- (info)->base_addr == 0 && \
- (info)->limit == 0 && \
- (info)->contents == 0 && \
- (info)->read_exec_only == 1 && \
- (info)->seg_32bit == 0 && \
- (info)->limit_in_pages == 0 && \
- (info)->seg_not_present == 1 && \
- (info)->useable == 0 && \
- (info)->lm == 0)
-
-#if TLS_SIZE != 24
-# error update this code.
-#endif
-
-static inline void load_TLS(struct thread_struct *t, unsigned int cpu)
-{
-#if 0
- u64 *gdt = (u64 *)(cpu_gdt_table[cpu] + GDT_ENTRY_TLS_MIN);
- gdt[0] = t->tls_array[0];
- gdt[1] = t->tls_array[1];
- gdt[2] = t->tls_array[2];
-#endif
-#define C(i) \
-
HYPERVISOR_update_descriptor(virt_to_machine(&get_cpu_gdt_table(cpu)[GDT_ENTRY_TLS_MIN
+ i]), t->tls_array[i])
-
- C(0); C(1); C(2);
-#undef C
-}
-
-/*
- * load one particular LDT into the current CPU
- */
-extern inline void load_LDT_nolock (mm_context_t *pc, int cpu)
-{
- void *segments = pc->ldt;
- int count = pc->size;
-
- if (likely(!count))
- segments = NULL;
-
- xen_set_ldt((unsigned long)segments, count);
-}
-
-static inline void load_LDT(mm_context_t *pc)
-{
- int cpu = get_cpu();
- load_LDT_nolock(pc, cpu);
- put_cpu();
-}
-
-extern struct desc_ptr idt_descr;
-
-#endif /* !__ASSEMBLY__ */
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/dma-mapping.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/dma-mapping.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,136 +0,0 @@
-#ifndef _X8664_DMA_MAPPING_H
-#define _X8664_DMA_MAPPING_H 1
-
-/*
- * IOMMU interface. See Documentation/DMA-mapping.txt and DMA-API.txt for
- * documentation.
- */
-
-#include <linux/config.h>
-
-#include <asm/scatterlist.h>
-#include <asm/io.h>
-#include <asm/swiotlb.h>
-
-extern dma_addr_t bad_dma_address;
-#define dma_mapping_error(x) \
- (swiotlb ? swiotlb_dma_mapping_error(x) : ((x) == bad_dma_address))
-
-void *dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t
*dma_handle,
- unsigned gfp);
-void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
- dma_addr_t dma_handle);
-
-#ifdef CONFIG_GART_IOMMU
-
-extern dma_addr_t dma_map_single(struct device *hwdev, void *ptr, size_t size,
- int direction);
-extern void dma_unmap_single(struct device *dev, dma_addr_t addr,size_t size,
- int direction);
-
-#else
-
-/* No IOMMU */
-
-static inline dma_addr_t dma_map_single(struct device *hwdev, void *ptr,
- size_t size, int direction)
-{
- dma_addr_t addr;
-
- if (direction == DMA_NONE)
- out_of_line_bug();
- addr = virt_to_machine(ptr);
-
- if ((addr+size) & ~*hwdev->dma_mask)
- out_of_line_bug();
- return addr;
-}
-
-static inline void dma_unmap_single(struct device *hwdev, dma_addr_t dma_addr,
- size_t size, int direction)
-{
- if (direction == DMA_NONE)
- out_of_line_bug();
- /* Nothing to do */
-}
-#endif
-
-#define dma_map_page(dev,page,offset,size,dir) \
- dma_map_single((dev), page_address(page)+(offset), (size), (dir))
-
-static inline void dma_sync_single_for_cpu(struct device *hwdev,
- dma_addr_t dma_handle,
- size_t size, int direction)
-{
- if (direction == DMA_NONE)
- out_of_line_bug();
-
- if (swiotlb)
- return
swiotlb_sync_single_for_cpu(hwdev,dma_handle,size,direction);
-
- flush_write_buffers();
-}
-
-static inline void dma_sync_single_for_device(struct device *hwdev,
- dma_addr_t dma_handle,
- size_t size, int direction)
-{
- if (direction == DMA_NONE)
- out_of_line_bug();
-
- if (swiotlb)
- return
swiotlb_sync_single_for_device(hwdev,dma_handle,size,direction);
-
- flush_write_buffers();
-}
-
-static inline void dma_sync_sg_for_cpu(struct device *hwdev,
- struct scatterlist *sg,
- int nelems, int direction)
-{
- if (direction == DMA_NONE)
- out_of_line_bug();
-
- if (swiotlb)
- return swiotlb_sync_sg_for_cpu(hwdev,sg,nelems,direction);
-
- flush_write_buffers();
-}
-
-static inline void dma_sync_sg_for_device(struct device *hwdev,
- struct scatterlist *sg,
- int nelems, int direction)
-{
- if (direction == DMA_NONE)
- out_of_line_bug();
-
- if (swiotlb)
- return swiotlb_sync_sg_for_device(hwdev,sg,nelems,direction);
-
- flush_write_buffers();
-}
-
-extern int dma_map_sg(struct device *hwdev, struct scatterlist *sg,
- int nents, int direction);
-extern void dma_unmap_sg(struct device *hwdev, struct scatterlist *sg,
- int nents, int direction);
-
-#define dma_unmap_page dma_unmap_single
-
-extern int dma_supported(struct device *hwdev, u64 mask);
-extern int dma_get_cache_alignment(void);
-#define dma_is_consistent(h) 1
-
-static inline int dma_set_mask(struct device *dev, u64 mask)
-{
- if (!dev->dma_mask || !dma_supported(dev, mask))
- return -EIO;
- *dev->dma_mask = mask;
- return 0;
-}
-
-static inline void dma_cache_sync(void *vaddr, size_t size, enum
dma_data_direction dir)
-{
- flush_write_buffers();
-}
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/fixmap.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/fixmap.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,114 +0,0 @@
-/*
- * fixmap.h: compile-time virtual memory allocation
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1998 Ingo Molnar
- */
-
-#ifndef _ASM_FIXMAP_H
-#define _ASM_FIXMAP_H
-
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <asm/apicdef.h>
-#include <asm-xen/gnttab.h>
-#include <asm/page.h>
-#include <asm/vsyscall.h>
-#include <asm/vsyscall32.h>
-#include <asm/acpi.h>
-
-/*
- * Here we define all the compile-time 'special' virtual
- * addresses. The point is to have a constant address at
- * compile time, but to set the physical address only
- * in the boot process.
- *
- * these 'compile-time allocated' memory buffers are
- * fixed-size 4k pages. (or larger if used with an increment
- * highger than 1) use fixmap_set(idx,phys) to associate
- * physical memory with fixmap indices.
- *
- * TLB entries of such buffers will not be flushed across
- * task switches.
- */
-
-enum fixed_addresses {
- VSYSCALL_LAST_PAGE,
- VSYSCALL_FIRST_PAGE = VSYSCALL_LAST_PAGE +
((VSYSCALL_END-VSYSCALL_START) >> PAGE_SHIFT) - 1,
- VSYSCALL_HPET,
- FIX_HPET_BASE,
-#ifdef CONFIG_X86_LOCAL_APIC
- FIX_APIC_BASE, /* local (CPU) APIC) -- required for SMP or not */
-#endif
-#ifdef CONFIG_X86_IO_APIC
- FIX_IO_APIC_BASE_0,
- FIX_IO_APIC_BASE_END = FIX_IO_APIC_BASE_0 + MAX_IO_APICS-1,
-#endif
-#ifdef CONFIG_ACPI_BOOT
- FIX_ACPI_BEGIN,
- FIX_ACPI_END = FIX_ACPI_BEGIN + FIX_ACPI_PAGES - 1,
- FIX_ACPI_RSDP_PAGE,
-#endif
- FIX_SHARED_INFO,
- FIX_GNTTAB_BEGIN,
- FIX_GNTTAB_END = FIX_GNTTAB_BEGIN + NR_GRANT_FRAMES - 1,
-#ifdef CONFIG_XEN_PHYSDEV_ACCESS
-#define NR_FIX_ISAMAPS 256
- FIX_ISAMAP_END,
- FIX_ISAMAP_BEGIN = FIX_ISAMAP_END + NR_FIX_ISAMAPS - 1,
-#endif
- __end_of_fixed_addresses
-};
-
-extern void __set_fixmap (enum fixed_addresses idx,
- unsigned long phys, pgprot_t flags);
-
-#define set_fixmap(idx, phys) \
- __set_fixmap(idx, phys, PAGE_KERNEL)
-/*
- * Some hardware wants to get fixmapped without caching.
- */
-#define set_fixmap_nocache(idx, phys) \
- __set_fixmap(idx, phys, PAGE_KERNEL_NOCACHE)
-
-#define clear_fixmap(idx) \
- __set_fixmap(idx, 0, __pgprot(0))
-
-#define FIXADDR_TOP (VSYSCALL_END-PAGE_SIZE)
-#define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT)
-#define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE)
-
-/* Only covers 32bit vsyscalls currently. Need another set for 64bit. */
-#define FIXADDR_USER_START ((unsigned long)VSYSCALL32_VSYSCALL)
-#define FIXADDR_USER_END (FIXADDR_USER_START + PAGE_SIZE)
-
-#define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT))
-
-extern void __this_fixmap_does_not_exist(void);
-
-/*
- * 'index to address' translation. If anyone tries to use the idx
- * directly without translation, we catch the bug with a NULL-deference
- * kernel oops. Illegal ranges of incoming indices are caught too.
- */
-extern inline unsigned long fix_to_virt(const unsigned int idx)
-{
- /*
- * this branch gets completely eliminated after inlining,
- * except when someone tries to use fixaddr indices in an
- * illegal way. (such as mixing up address types or using
- * out-of-range indices).
- *
- * If it doesn't get removed, the linker will complain
- * loudly with a reasonably clear error message..
- */
- if (idx >= __end_of_fixed_addresses)
- __this_fixmap_does_not_exist();
-
- return __fix_to_virt(idx);
-}
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/floppy.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/floppy.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,204 +0,0 @@
-/*
- * Architecture specific parts of the Floppy driver
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1995
- *
- * Modifications for Xen are Copyright (c) 2004, Keir Fraser.
- */
-#ifndef __ASM_XEN_X86_64_FLOPPY_H
-#define __ASM_XEN_X86_64_FLOPPY_H
-
-#include <linux/vmalloc.h>
-
-
-/*
- * The DMA channel used by the floppy controller cannot access data at
- * addresses >= 16MB
- *
- * Went back to the 1MB limit, as some people had problems with the floppy
- * driver otherwise. It doesn't matter much for performance anyway, as most
- * floppy accesses go through the track buffer.
- */
-#define _CROSS_64KB(a,s,vdma) \
-(!(vdma) && ((unsigned long)(a)/K_64 != ((unsigned long)(a) + (s) - 1) / K_64))
-
-#include <linux/vmalloc.h>
-
-/* XEN: Hit DMA paths on the head. This trick from asm-m68k/floppy.h. */
-#include <asm/dma.h>
-#undef MAX_DMA_ADDRESS
-#define MAX_DMA_ADDRESS 0
-#define CROSS_64KB(a,s) (0)
-
-#define fd_inb(port) inb_p(port)
-#define fd_outb(value,port) outb_p(value,port)
-
-#define fd_request_dma() (0)
-#define fd_free_dma() ((void)0)
-#define fd_enable_irq() enable_irq(FLOPPY_IRQ)
-#define fd_disable_irq() disable_irq(FLOPPY_IRQ)
-#define fd_free_irq() free_irq(FLOPPY_IRQ, NULL)
-#define fd_get_dma_residue() vdma_get_dma_residue(FLOPPY_DMA)
-#define fd_dma_mem_alloc(size) vdma_mem_alloc(size)
-#define fd_dma_mem_free(addr, size) vdma_mem_free(addr, size)
-#define fd_dma_setup(addr, size, mode, io) vdma_dma_setup(addr, size, mode, io)
-
-static int virtual_dma_count;
-static int virtual_dma_residue;
-static char *virtual_dma_addr;
-static int virtual_dma_mode;
-static int doing_pdma;
-
-static irqreturn_t floppy_hardint(int irq, void *dev_id, struct pt_regs * regs)
-{
- register unsigned char st;
-
-#undef TRACE_FLPY_INT
-
-#ifdef TRACE_FLPY_INT
- static int calls=0;
- static int bytes=0;
- static int dma_wait=0;
-#endif
- if (!doing_pdma)
- return floppy_interrupt(irq, dev_id, regs);
-
-#ifdef TRACE_FLPY_INT
- if(!calls)
- bytes = virtual_dma_count;
-#endif
-
- {
- register int lcount;
- register char *lptr;
-
- st = 1;
- for(lcount=virtual_dma_count, lptr=virtual_dma_addr;
- lcount; lcount--, lptr++) {
- st=inb(virtual_dma_port+4) & 0xa0 ;
- if(st != 0xa0)
- break;
- if(virtual_dma_mode)
- outb_p(*lptr, virtual_dma_port+5);
- else
- *lptr = inb_p(virtual_dma_port+5);
- }
- virtual_dma_count = lcount;
- virtual_dma_addr = lptr;
- st = inb(virtual_dma_port+4);
- }
-
-#ifdef TRACE_FLPY_INT
- calls++;
-#endif
- if(st == 0x20)
- return IRQ_HANDLED;
- if(!(st & 0x20)) {
- virtual_dma_residue += virtual_dma_count;
- virtual_dma_count=0;
-#ifdef TRACE_FLPY_INT
- printk("count=%x, residue=%x calls=%d bytes=%d dma_wait=%d\n",
- virtual_dma_count, virtual_dma_residue, calls, bytes,
- dma_wait);
- calls = 0;
- dma_wait=0;
-#endif
- doing_pdma = 0;
- floppy_interrupt(irq, dev_id, regs);
- return IRQ_HANDLED;
- }
-#ifdef TRACE_FLPY_INT
- if(!virtual_dma_count)
- dma_wait++;
-#endif
- return IRQ_HANDLED;
-}
-
-static void fd_disable_dma(void)
-{
- doing_pdma = 0;
- virtual_dma_residue += virtual_dma_count;
- virtual_dma_count=0;
-}
-
-static int vdma_get_dma_residue(unsigned int dummy)
-{
- return virtual_dma_count + virtual_dma_residue;
-}
-
-
-static int fd_request_irq(void)
-{
- return request_irq(FLOPPY_IRQ, floppy_hardint,SA_INTERRUPT,
- "floppy", NULL);
-}
-
-
-static unsigned long vdma_mem_alloc(unsigned long size)
-{
- return (unsigned long) vmalloc(size);
-
-}
-
-static void vdma_mem_free(unsigned long addr, unsigned long size)
-{
- vfree((void *)addr);
-}
-
-static int vdma_dma_setup(char *addr, unsigned long size, int mode, int io)
-{
- doing_pdma = 1;
- virtual_dma_port = io;
- virtual_dma_mode = (mode == DMA_MODE_WRITE);
- virtual_dma_addr = addr;
- virtual_dma_count = size;
- virtual_dma_residue = 0;
- return 0;
-}
-
-/* XEN: This trick to force 'virtual DMA' is from include/asm-m68k/floppy.h. */
-#define FDC1 xen_floppy_init()
-static int FDC2 = -1;
-
-static int xen_floppy_init(void)
-{
- use_virtual_dma = 1;
- can_use_virtual_dma = 1;
- return 0x340;
-}
-
-/*
- * Floppy types are stored in the rtc's CMOS RAM and so rtc_lock
- * is needed to prevent corrupted CMOS RAM in case "insmod floppy"
- * coincides with another rtc CMOS user. Paul G.
- */
-#define FLOPPY0_TYPE ({ \
- unsigned long flags; \
- unsigned char val; \
- spin_lock_irqsave(&rtc_lock, flags); \
- val = (CMOS_READ(0x10) >> 4) & 15; \
- spin_unlock_irqrestore(&rtc_lock, flags); \
- val; \
-})
-
-#define FLOPPY1_TYPE ({ \
- unsigned long flags; \
- unsigned char val; \
- spin_lock_irqsave(&rtc_lock, flags); \
- val = CMOS_READ(0x10) & 15; \
- spin_unlock_irqrestore(&rtc_lock, flags); \
- val; \
-})
-
-#define N_FDC 2
-#define N_DRIVE 8
-
-#define FLOPPY_MOTOR_MASK 0xf0
-
-#define EXTRA_FLOPPY_PARAMS
-
-#endif /* __ASM_XEN_X86_64_FLOPPY_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/hypercall.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/hypercall.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,505 +0,0 @@
-/******************************************************************************
- * hypercall.h
- *
- * Linux-specific hypervisor handling.
- *
- * Copyright (c) 2002-2004, K A Fraser
- *
- * This file may be distributed separately from the Linux kernel, or
- * incorporated into other software packages, subject to the following license:
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this source file (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use, copy, modify,
- * merge, publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-/*
- * Benjamin Liu <benjamin.liu@xxxxxxxxx>
- * Jun Nakajima <jun.nakajima@xxxxxxxxx>
- * Ported to x86-64.
- *
- */
-
-#ifndef __HYPERCALL_H__
-#define __HYPERCALL_H__
-#include <asm-xen/xen-public/xen.h>
-
-#define __syscall_clobber "r11","rcx","memory"
-
-/*
- * Assembler stubs for hyper-calls.
- */
-static inline int
-HYPERVISOR_set_trap_table(
- trap_info_t *table)
-{
- int ret;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_set_trap_table), "D" (table)
- : __syscall_clobber );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_mmu_update(
- mmu_update_t *req, int count, int *success_count, domid_t domid)
-{
- int ret;
-
- __asm__ __volatile__ (
- "movq %5, %%r10;" TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_mmu_update), "D" (req), "S"
((long)count),
- "d" (success_count), "g" ((unsigned long)domid)
- : __syscall_clobber, "r10" );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_mmuext_op(
- struct mmuext_op *op, int count, int *success_count, domid_t domid)
-{
- int ret;
-
- __asm__ __volatile__ (
- "movq %5, %%r10;" TRAP_INSTR
- : "=a" (ret)
- : "0" (__HYPERVISOR_mmuext_op), "D" (op), "S" ((long)count),
- "d" (success_count), "g" ((unsigned long)domid)
- : __syscall_clobber, "r10" );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_set_gdt(
- unsigned long *frame_list, int entries)
-{
- int ret;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_set_gdt), "D" (frame_list), "S"
((long)entries)
- : __syscall_clobber );
-
-
- return ret;
-}
-static inline int
-HYPERVISOR_stack_switch(
- unsigned long ss, unsigned long esp)
-{
- int ret;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_stack_switch), "D" (ss), "S" (esp)
- : __syscall_clobber );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_set_callbacks(
- unsigned long event_address, unsigned long failsafe_address,
- unsigned long syscall_address)
-{
- int ret;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_set_callbacks), "D" (event_address),
- "S" (failsafe_address), "d" (syscall_address)
- : __syscall_clobber );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_fpu_taskswitch(
- int set)
-{
- int ret;
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret) : "0" ((unsigned long)__HYPERVISOR_fpu_taskswitch),
- "D" ((unsigned long) set) : __syscall_clobber );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_yield(
- void)
-{
- int ret;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_sched_op), "D" ((unsigned
long)SCHEDOP_yield)
- : __syscall_clobber );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_block(
- void)
-{
- int ret;
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_sched_op), "D" ((unsigned
long)SCHEDOP_block)
- : __syscall_clobber );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_shutdown(
- void)
-{
- int ret;
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_sched_op),
- "D" ((unsigned long)(SCHEDOP_shutdown | (SHUTDOWN_poweroff <<
SCHEDOP_reasonshift)))
- : __syscall_clobber );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_reboot(
- void)
-{
- int ret;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_sched_op),
- "D" ((unsigned long)(SCHEDOP_shutdown | (SHUTDOWN_reboot <<
SCHEDOP_reasonshift)))
- : __syscall_clobber );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_suspend(
- unsigned long srec)
-{
- int ret;
-
- /* NB. On suspend, control software expects a suspend record in %esi. */
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_sched_op),
- "D" ((unsigned long)(SCHEDOP_shutdown | (SHUTDOWN_suspend <<
SCHEDOP_reasonshift))),
- "S" (srec)
- : __syscall_clobber );
-
- return ret;
-}
-
-/*
- * We can have the timeout value in a single argument for the hypercall, but
- * that will break the common code.
- */
-static inline long
-HYPERVISOR_set_timer_op(
- u64 timeout)
-{
- int ret;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_set_timer_op),
- "D" (timeout)
- : __syscall_clobber );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_dom0_op(
- dom0_op_t *dom0_op)
-{
- int ret;
-
- dom0_op->interface_version = DOM0_INTERFACE_VERSION;
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_dom0_op), "D" (dom0_op)
- : __syscall_clobber );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_set_debugreg(
- int reg, unsigned long value)
-{
- int ret;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_set_debugreg), "D" ((unsigned
long)reg), "S" (value)
- : __syscall_clobber );
-
- return ret;
-}
-
-static inline unsigned long
-HYPERVISOR_get_debugreg(
- int reg)
-{
- unsigned long ret;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_get_debugreg), "D" ((unsigned
long)reg)
- : __syscall_clobber );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_update_descriptor(
- unsigned long ma, unsigned long word)
-{
- int ret;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_update_descriptor), "D" (ma),
- "S" (word)
- : __syscall_clobber );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_dom_mem_op(
- unsigned int op, unsigned long *extent_list,
- unsigned long nr_extents, unsigned int extent_order)
-{
- int ret;
-
- __asm__ __volatile__ (
- "movq %5,%%r10; movq %6,%%r8;" TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_dom_mem_op), "D" ((unsigned
long)op), "S" (extent_list),
- "d" (nr_extents), "g" ((unsigned long) extent_order), "g" ((unsigned
long) DOMID_SELF)
- : __syscall_clobber,"r8","r10");
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_multicall(
- void *call_list, int nr_calls)
-{
- int ret;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_multicall), "D" (call_list), "S"
((unsigned long)nr_calls)
- : __syscall_clobber);
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_update_va_mapping(
- unsigned long page_nr, pte_t new_val, unsigned long flags)
-{
- int ret;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_update_va_mapping),
- "D" (page_nr), "S" (new_val.pte), "d" (flags)
- : __syscall_clobber);
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_event_channel_op(
- void *op)
-{
- int ret;
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_event_channel_op), "D" (op)
- : __syscall_clobber);
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_xen_version(
- int cmd)
-{
- int ret;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_xen_version), "D" ((unsigned
long)cmd)
- : __syscall_clobber);
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_console_io(
- int cmd, int count, char *str)
-{
- int ret;
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_console_io), "D" ((unsigned
long)cmd), "S" ((unsigned long)count), "d" (str)
- : __syscall_clobber);
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_physdev_op(
- void *physdev_op)
-{
- int ret;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_physdev_op), "D" (physdev_op)
- : __syscall_clobber);
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_grant_table_op(
- unsigned int cmd, void *uop, unsigned int count)
-{
- int ret;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_grant_table_op), "D" ((unsigned
long)cmd), "S" ((unsigned long)uop), "d" (count)
- : __syscall_clobber);
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_update_va_mapping_otherdomain(
- unsigned long page_nr, pte_t new_val, unsigned long flags, domid_t domid)
-{
- int ret;
-
- __asm__ __volatile__ (
- "movq %5, %%r10;" TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_update_va_mapping_otherdomain),
- "D" (page_nr), "S" (new_val.pte), "d" (flags), "g" ((unsigned
long)domid)
- : __syscall_clobber,"r10");
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_vm_assist(
- unsigned int cmd, unsigned int type)
-{
- int ret;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_vm_assist), "D" ((unsigned
long)cmd), "S" ((unsigned long)type)
- : __syscall_clobber);
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_switch_to_user(void)
-{
- int ret;
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret) : "0" ((unsigned long)__HYPERVISOR_switch_to_user) :
__syscall_clobber );
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_boot_vcpu(
- unsigned long vcpu, vcpu_guest_context_t *ctxt)
-{
- int ret;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret)
- : "0" (__HYPERVISOR_boot_vcpu), "D" (vcpu), "S" (ctxt)
- : __syscall_clobber);
-
- return ret;
-}
-
-static inline int
-HYPERVISOR_set_segment_base(
- int reg, unsigned long value)
-{
- int ret;
-
- __asm__ __volatile__ (
- TRAP_INSTR
- : "=a" (ret)
- : "0" ((unsigned long)__HYPERVISOR_set_segment_base), "D" ((unsigned
long)reg), "S" (value)
- : __syscall_clobber );
-
- return ret;
-}
-
-#endif /* __HYPERCALL_H__ */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/io.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/io.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,365 +0,0 @@
-#ifndef _ASM_IO_H
-#define _ASM_IO_H
-
-#include <linux/config.h>
-#include <asm/fixmap.h>
-/*
- * This file contains the definitions for the x86 IO instructions
- * inb/inw/inl/outb/outw/outl and the "string versions" of the same
- * (insb/insw/insl/outsb/outsw/outsl). You can also use "pausing"
- * versions of the single-IO instructions (inb_p/inw_p/..).
- *
- * This file is not meant to be obfuscating: it's just complicated
- * to (a) handle it all in a way that makes gcc able to optimize it
- * as well as possible and (b) trying to avoid writing the same thing
- * over and over again with slight variations and possibly making a
- * mistake somewhere.
- */
-
-/*
- * Thanks to James van Artsdalen for a better timing-fix than
- * the two short jumps: using outb's to a nonexistent port seems
- * to guarantee better timings even on fast machines.
- *
- * On the other hand, I'd like to be sure of a non-existent port:
- * I feel a bit unsafe about using 0x80 (should be safe, though)
- *
- * Linus
- */
-
- /*
- * Bit simplified and optimized by Jan Hubicka
- * Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999.
- *
- * isa_memset_io, isa_memcpy_fromio, isa_memcpy_toio added,
- * isa_read[wl] and isa_write[wl] fixed
- * - Arnaldo Carvalho de Melo <acme@xxxxxxxxxxxxxxxx>
- */
-
-#ifdef SLOW_IO_BY_JUMPING
-#define __SLOW_DOWN_IO "\njmp 1f\n1:\tjmp 1f\n1:"
-#else
-#define __SLOW_DOWN_IO "\noutb %%al,$0x80"
-#endif
-
-#ifdef REALLY_SLOW_IO
-#define __FULL_SLOW_DOWN_IO __SLOW_DOWN_IO __SLOW_DOWN_IO __SLOW_DOWN_IO
__SLOW_DOWN_IO
-#else
-#define __FULL_SLOW_DOWN_IO __SLOW_DOWN_IO
-#endif
-
-/*
- * Talk about misusing macros..
- */
-#define __OUT1(s,x) \
-extern inline void out##s(unsigned x value, unsigned short port) {
-
-#define __OUT2(s,s1,s2) \
-__asm__ __volatile__ ("out" #s " %" s1 "0,%" s2 "1"
-
-#define __OUT(s,s1,x) \
-__OUT1(s,x) __OUT2(s,s1,"w") : : "a" (value), "Nd" (port)); } \
-__OUT1(s##_p,x) __OUT2(s,s1,"w") __FULL_SLOW_DOWN_IO : : "a" (value), "Nd"
(port));} \
-
-#define __IN1(s) \
-extern inline RETURN_TYPE in##s(unsigned short port) { RETURN_TYPE _v;
-
-#define __IN2(s,s1,s2) \
-__asm__ __volatile__ ("in" #s " %" s2 "1,%" s1 "0"
-
-#define __IN(s,s1,i...) \
-__IN1(s) __IN2(s,s1,"w") : "=a" (_v) : "Nd" (port) ,##i ); return _v; } \
-__IN1(s##_p) __IN2(s,s1,"w") __FULL_SLOW_DOWN_IO : "=a" (_v) : "Nd" (port)
,##i ); return _v; } \
-
-#define __INS(s) \
-extern inline void ins##s(unsigned short port, void * addr, unsigned long
count) \
-{ __asm__ __volatile__ ("rep ; ins" #s \
-: "=D" (addr), "=c" (count) : "d" (port),"0" (addr),"1" (count)); }
-
-#define __OUTS(s) \
-extern inline void outs##s(unsigned short port, const void * addr, unsigned
long count) \
-{ __asm__ __volatile__ ("rep ; outs" #s \
-: "=S" (addr), "=c" (count) : "d" (port),"0" (addr),"1" (count)); }
-
-#define RETURN_TYPE unsigned char
-__IN(b,"")
-#undef RETURN_TYPE
-#define RETURN_TYPE unsigned short
-__IN(w,"")
-#undef RETURN_TYPE
-#define RETURN_TYPE unsigned int
-__IN(l,"")
-#undef RETURN_TYPE
-
-__OUT(b,"b",char)
-__OUT(w,"w",short)
-__OUT(l,,int)
-
-__INS(b)
-__INS(w)
-__INS(l)
-
-__OUTS(b)
-__OUTS(w)
-__OUTS(l)
-
-#define IO_SPACE_LIMIT 0xffff
-
-#if defined(__KERNEL__) && __x86_64__
-
-#include <linux/vmalloc.h>
-
-#ifndef __i386__
-/*
- * Change virtual addresses to physical addresses and vv.
- * These are pretty trivial
- */
-extern inline unsigned long virt_to_phys(volatile void * address)
-{
- return __pa(address);
-}
-
-extern inline void * phys_to_virt(unsigned long address)
-{
- return __va(address);
-}
-
-
-#define virt_to_bus(_x) phys_to_machine(__pa(_x))
-#define bus_to_virt(_x) __va(machine_to_phys(_x))
-#endif
-
-/*
- * Change "struct page" to physical address.
- */
-#ifdef CONFIG_DISCONTIGMEM
-#include <asm/mmzone.h>
-#define page_to_pseudophys(page) ((dma_addr_t)page_to_pfn(page) << PAGE_SHIFT)
-#define page_to_phys(page) (phys_to_machine(page_to_pseudophys(page)))
-
-#define bio_to_pseudophys(bio) (page_to_pseudophys(bio_page((bio))) + \
- (unsigned long) bio_offset((bio)))
-#define bvec_to_pseudophys(bv) (page_to_pseudophys((bv)->bv_page) + \
- (unsigned long) (bv)->bv_offset)
-
-#define BIOVEC_PHYS_MERGEABLE(vec1, vec2) \
- (((bvec_to_phys((vec1)) + (vec1)->bv_len) == bvec_to_phys((vec2))) && \
- ((bvec_to_pseudophys((vec1)) + (vec1)->bv_len) == \
- bvec_to_pseudophys((vec2))))
-#else
-// #define page_to_phys(page) ((page - mem_map) << PAGE_SHIFT)
-#define page_to_pseudophys(page) ((dma_addr_t)page_to_pfn(page) << PAGE_SHIFT)
-#define page_to_phys(page) (phys_to_machine(page_to_pseudophys(page)))
-
-#define bio_to_pseudophys(bio) (page_to_pseudophys(bio_page((bio))) + \
- (unsigned long) bio_offset((bio)))
-#define bvec_to_pseudophys(bv) (page_to_pseudophys((bv)->bv_page) + \
- (unsigned long) (bv)->bv_offset)
-
-#define BIOVEC_PHYS_MERGEABLE(vec1, vec2) \
- (((bvec_to_phys((vec1)) + (vec1)->bv_len) == bvec_to_phys((vec2))) && \
- ((bvec_to_pseudophys((vec1)) + (vec1)->bv_len) == \
- bvec_to_pseudophys((vec2))))
-#endif
-
-#include <asm-generic/iomap.h>
-
-extern void __iomem *__ioremap(unsigned long offset, unsigned long size,
unsigned long flags);
-
-extern inline void __iomem * ioremap (unsigned long offset, unsigned long size)
-{
- return __ioremap(offset, size, 0);
-}
-
-/*
- * This one maps high address device memory and turns off caching for that
area.
- * it's useful if some control registers are in such an area and write
combining
- * or read caching is not desirable:
- */
-extern void __iomem * ioremap_nocache (unsigned long offset, unsigned long
size);
-extern void iounmap(volatile void __iomem *addr);
-
-/*
- * ISA I/O bus memory addresses are 1:1 with the physical address.
- */
-
-#define isa_virt_to_bus(_x) isa_virt_to_bus_is_UNSUPPORTED->x
-#define isa_page_to_bus(_x) isa_page_to_bus_is_UNSUPPORTED->x
-#ifdef CONFIG_XEN_PHYSDEV_ACCESS
-#define isa_bus_to_virt(_x) (void *)(__fix_to_virt(FIX_ISAMAP_BEGIN) + (_x))
-#else
-#define isa_bus_to_virt(_x) isa_bus_to_virt_needs_PRIVILEGED_BUILD
-#endif
-/*
- * However PCI ones are not necessarily 1:1 and therefore these interfaces
- * are forbidden in portable PCI drivers.
- *
- * Allow them on x86 for legacy drivers, though.
- */
-#define virt_to_bus(_x) phys_to_machine(__pa(_x))
-#define bus_to_virt(_x) __va(machine_to_phys(_x))
-
-/*
- * readX/writeX() are used to access memory mapped devices. On some
- * architectures the memory mapped IO stuff needs to be accessed
- * differently. On the x86 architecture, we just read/write the
- * memory location directly.
- */
-
-static inline __u8 __readb(const volatile void __iomem *addr)
-{
- return *(__force volatile __u8 *)addr;
-}
-static inline __u16 __readw(const volatile void __iomem *addr)
-{
- return *(__force volatile __u16 *)addr;
-}
-static inline __u32 __readl(const volatile void __iomem *addr)
-{
- return *(__force volatile __u32 *)addr;
-}
-static inline __u64 __readq(const volatile void __iomem *addr)
-{
- return *(__force volatile __u64 *)addr;
-}
-#define readb(x) __readb(x)
-#define readw(x) __readw(x)
-#define readl(x) __readl(x)
-#define readq(x) __readq(x)
-#define readb_relaxed(a) readb(a)
-#define readw_relaxed(a) readw(a)
-#define readl_relaxed(a) readl(a)
-#define readq_relaxed(a) readq(a)
-#define __raw_readb readb
-#define __raw_readw readw
-#define __raw_readl readl
-#define __raw_readq readq
-
-#define mmiowb()
-
-#ifdef CONFIG_UNORDERED_IO
-static inline void __writel(__u32 val, volatile void __iomem *addr)
-{
- volatile __u32 __iomem *target = addr;
- asm volatile("movnti %1,%0"
- : "=m" (*target)
- : "r" (val) : "memory");
-}
-
-static inline void __writeq(__u64 val, volatile void __iomem *addr)
-{
- volatile __u64 __iomem *target = addr;
- asm volatile("movnti %1,%0"
- : "=m" (*target)
- : "r" (val) : "memory");
-}
-#else
-static inline void __writel(__u32 b, volatile void __iomem *addr)
-{
- *(__force volatile __u32 *)addr = b;
-}
-static inline void __writeq(__u64 b, volatile void __iomem *addr)
-{
- *(__force volatile __u64 *)addr = b;
-}
-#endif
-static inline void __writeb(__u8 b, volatile void __iomem *addr)
-{
- *(__force volatile __u8 *)addr = b;
-}
-static inline void __writew(__u16 b, volatile void __iomem *addr)
-{
- *(__force volatile __u16 *)addr = b;
-}
-#define writeq(val,addr) __writeq((val),(addr))
-#define writel(val,addr) __writel((val),(addr))
-#define writew(val,addr) __writew((val),(addr))
-#define writeb(val,addr) __writeb((val),(addr))
-#define __raw_writeb writeb
-#define __raw_writew writew
-#define __raw_writel writel
-#define __raw_writeq writeq
-
-void __memcpy_fromio(void*,unsigned long,unsigned);
-void __memcpy_toio(unsigned long,const void*,unsigned);
-
-static inline void memcpy_fromio(void *to, const volatile void __iomem *from,
unsigned len)
-{
- __memcpy_fromio(to,(unsigned long)from,len);
-}
-static inline void memcpy_toio(volatile void __iomem *to, const void *from,
unsigned len)
-{
- __memcpy_toio((unsigned long)to,from,len);
-}
-
-void memset_io(volatile void __iomem *a, int b, size_t c);
-
-/*
- * ISA space is 'always mapped' on a typical x86 system, no need to
- * explicitly ioremap() it. The fact that the ISA IO space is mapped
- * to PAGE_OFFSET is pure coincidence - it does not mean ISA values
- * are physical addresses. The following constant pointer can be
- * used as the IO-area pointer (it can be iounmapped as well, so the
- * analogy with PCI is quite large):
- */
-#define __ISA_IO_base ((char __iomem *)(PAGE_OFFSET))
-
-#define isa_readb(a) readb(__ISA_IO_base + (a))
-#define isa_readw(a) readw(__ISA_IO_base + (a))
-#define isa_readl(a) readl(__ISA_IO_base + (a))
-#define isa_writeb(b,a) writeb(b,__ISA_IO_base + (a))
-#define isa_writew(w,a) writew(w,__ISA_IO_base + (a))
-#define isa_writel(l,a) writel(l,__ISA_IO_base + (a))
-#define isa_memset_io(a,b,c) memset_io(__ISA_IO_base + (a),(b),(c))
-#define isa_memcpy_fromio(a,b,c) memcpy_fromio((a),__ISA_IO_base +
(b),(c))
-#define isa_memcpy_toio(a,b,c) memcpy_toio(__ISA_IO_base + (a),(b),(c))
-
-
-/*
- * Again, x86-64 does not require mem IO specific function.
- */
-
-#define eth_io_copy_and_sum(a,b,c,d) eth_copy_and_sum((a),(void
*)(b),(c),(d))
-#define isa_eth_io_copy_and_sum(a,b,c,d) eth_copy_and_sum((a),(void
*)(__ISA_IO_base + (b)),(c),(d))
-
-/**
- * check_signature - find BIOS signatures
- * @io_addr: mmio address to check
- * @signature: signature block
- * @length: length of signature
- *
- * Perform a signature comparison with the mmio address io_addr. This
- * address should have been obtained by ioremap.
- * Returns 1 on a match.
- */
-
-static inline int check_signature(void __iomem *io_addr,
- const unsigned char *signature, int length)
-{
- int retval = 0;
- do {
- if (readb(io_addr) != *signature)
- goto out;
- io_addr++;
- signature++;
- length--;
- } while (length);
- retval = 1;
-out:
- return retval;
-}
-
-/* Nothing to do */
-
-#define dma_cache_inv(_start,_size) do { } while (0)
-#define dma_cache_wback(_start,_size) do { } while (0)
-#define dma_cache_wback_inv(_start,_size) do { } while (0)
-
-#define flush_write_buffers()
-
-extern int iommu_bio_merge;
-#define BIO_VMERGE_BOUNDARY iommu_bio_merge
-
-#endif /* __KERNEL__ */
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/irq.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/irq.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,36 +0,0 @@
-#ifndef _ASM_IRQ_H
-#define _ASM_IRQ_H
-
-/*
- * linux/include/asm/irq.h
- *
- * (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar
- *
- * IRQ/IPI changes taken from work by Thomas Radke
- * <tomsoft@xxxxxxxxxxxxxxxxxxxxxxxxx>
- */
-
-#include <linux/config.h>
-#include <linux/sched.h>
-/* include comes from machine specific directory */
-#include "irq_vectors.h"
-#include <asm/thread_info.h>
-
-static __inline__ int irq_canonicalize(int irq)
-{
- return ((irq == 2) ? 9 : irq);
-}
-
-#ifdef CONFIG_X86_LOCAL_APIC
-#define ARCH_HAS_NMI_WATCHDOG /* See include/linux/nmi.h */
-#endif
-
-#define KDB_VECTOR 0xf9
-
-# define irq_ctx_init(cpu) do { } while (0)
-
-struct irqaction;
-struct pt_regs;
-int handle_IRQ_event(unsigned int, struct pt_regs *, struct irqaction *);
-
-#endif /* _ASM_IRQ_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/mach-xen/io_ports.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/mach-xen/io_ports.h
Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,30 +0,0 @@
-/*
- * arch/i386/mach-generic/io_ports.h
- *
- * Machine specific IO port address definition for generic.
- * Written by Osamu Tomita <tomita@xxxxxxxxxxx>
- */
-#ifndef _MACH_IO_PORTS_H
-#define _MACH_IO_PORTS_H
-
-/* i8253A PIT registers */
-#define PIT_MODE 0x43
-#define PIT_CH0 0x40
-#define PIT_CH2 0x42
-
-/* i8259A PIC registers */
-#define PIC_MASTER_CMD 0x20
-#define PIC_MASTER_IMR 0x21
-#define PIC_MASTER_ISR PIC_MASTER_CMD
-#define PIC_MASTER_POLL PIC_MASTER_ISR
-#define PIC_MASTER_OCW3 PIC_MASTER_ISR
-#define PIC_SLAVE_CMD 0xa0
-#define PIC_SLAVE_IMR 0xa1
-
-/* i8259A PIC related value */
-#define PIC_CASCADE_IR 2
-#define MASTER_ICW4_DEFAULT 0x01
-#define SLAVE_ICW4_DEFAULT 0x01
-#define PIC_ICW4_AEOI 2
-
-#endif /* !_MACH_IO_PORTS_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/mach-xen/mach_time.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/mach-xen/mach_time.h
Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,122 +0,0 @@
-/*
- * include/asm-i386/mach-default/mach_time.h
- *
- * Machine specific set RTC function for generic.
- * Split out from time.c by Osamu Tomita <tomita@xxxxxxxxxxx>
- */
-#ifndef _MACH_TIME_H
-#define _MACH_TIME_H
-
-#include <linux/mc146818rtc.h>
-
-/* for check timing call set_rtc_mmss() 500ms */
-/* used in arch/i386/time.c::do_timer_interrupt() */
-#define USEC_AFTER 500000
-#define USEC_BEFORE 500000
-
-/*
- * In order to set the CMOS clock precisely, set_rtc_mmss has to be
- * called 500 ms after the second nowtime has started, because when
- * nowtime is written into the registers of the CMOS clock, it will
- * jump to the next second precisely 500 ms later. Check the Motorola
- * MC146818A or Dallas DS12887 data sheet for details.
- *
- * BUG: This routine does not handle hour overflow properly; it just
- * sets the minutes. Usually you'll only notice that after reboot!
- */
-static inline int mach_set_rtc_mmss(unsigned long nowtime)
-{
- int retval = 0;
- int real_seconds, real_minutes, cmos_minutes;
- unsigned char save_control, save_freq_select;
-
- save_control = CMOS_READ(RTC_CONTROL); /* tell the clock it's being set
*/
- CMOS_WRITE((save_control|RTC_SET), RTC_CONTROL);
-
- save_freq_select = CMOS_READ(RTC_FREQ_SELECT); /* stop and reset
prescaler */
- CMOS_WRITE((save_freq_select|RTC_DIV_RESET2), RTC_FREQ_SELECT);
-
- cmos_minutes = CMOS_READ(RTC_MINUTES);
- if (!(save_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD)
- BCD_TO_BIN(cmos_minutes);
-
- /*
- * since we're only adjusting minutes and seconds,
- * don't interfere with hour overflow. This avoids
- * messing with unknown time zones but requires your
- * RTC not to be off by more than 15 minutes
- */
- real_seconds = nowtime % 60;
- real_minutes = nowtime / 60;
- if (((abs(real_minutes - cmos_minutes) + 15)/30) & 1)
- real_minutes += 30; /* correct for half hour time
zone */
- real_minutes %= 60;
-
- if (abs(real_minutes - cmos_minutes) < 30) {
- if (!(save_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
- BIN_TO_BCD(real_seconds);
- BIN_TO_BCD(real_minutes);
- }
- CMOS_WRITE(real_seconds,RTC_SECONDS);
- CMOS_WRITE(real_minutes,RTC_MINUTES);
- } else {
- printk(KERN_WARNING
- "set_rtc_mmss: can't update from %d to %d\n",
- cmos_minutes, real_minutes);
- retval = -1;
- }
-
- /* The following flags have to be released exactly in this order,
- * otherwise the DS12887 (popular MC146818A clone with integrated
- * battery and quartz) will not reset the oscillator and will not
- * update precisely 500 ms later. You won't find this mentioned in
- * the Dallas Semiconductor data sheets, but who believes data
- * sheets anyway ... -- Markus Kuhn
- */
- CMOS_WRITE(save_control, RTC_CONTROL);
- CMOS_WRITE(save_freq_select, RTC_FREQ_SELECT);
-
- return retval;
-}
-
-static inline unsigned long mach_get_cmos_time(void)
-{
- unsigned int year, mon, day, hour, min, sec;
- int i;
-
- /* The Linux interpretation of the CMOS clock register contents:
- * When the Update-In-Progress (UIP) flag goes from 1 to 0, the
- * RTC registers show the second which has precisely just started.
- * Let's hope other operating systems interpret the RTC the same way.
- */
- /* read RTC exactly on falling edge of update flag */
- for (i = 0 ; i < 1000000 ; i++) /* may take up to 1 second... */
- if (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP)
- break;
- for (i = 0 ; i < 1000000 ; i++) /* must try at least 2.228 ms */
- if (!(CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP))
- break;
- do { /* Isn't this overkill ? UIP above should guarantee consistency */
- sec = CMOS_READ(RTC_SECONDS);
- min = CMOS_READ(RTC_MINUTES);
- hour = CMOS_READ(RTC_HOURS);
- day = CMOS_READ(RTC_DAY_OF_MONTH);
- mon = CMOS_READ(RTC_MONTH);
- year = CMOS_READ(RTC_YEAR);
- } while (sec != CMOS_READ(RTC_SECONDS));
- if (!(CMOS_READ(RTC_CONTROL) & RTC_DM_BINARY) || RTC_ALWAYS_BCD)
- {
- BCD_TO_BIN(sec);
- BCD_TO_BIN(min);
- BCD_TO_BIN(hour);
- BCD_TO_BIN(day);
- BCD_TO_BIN(mon);
- BCD_TO_BIN(year);
- }
- if ((year += 1900) < 1970)
- year += 100;
-
- return mktime(year, mon, day, hour, min, sec);
-}
-
-#endif /* !_MACH_TIME_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/mach-xen/mach_timer.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/mach-xen/mach_timer.h
Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,48 +0,0 @@
-/*
- * include/asm-i386/mach-default/mach_timer.h
- *
- * Machine specific calibrate_tsc() for generic.
- * Split out from timer_tsc.c by Osamu Tomita <tomita@xxxxxxxxxxx>
- */
-/* ------ Calibrate the TSC -------
- * Return 2^32 * (1 / (TSC clocks per usec)) for do_fast_gettimeoffset().
- * Too much 64-bit arithmetic here to do this cleanly in C, and for
- * accuracy's sake we want to keep the overhead on the CTC speaker (channel 2)
- * output busy loop as low as possible. We avoid reading the CTC registers
- * directly because of the awkward 8-bit access mechanism of the 82C54
- * device.
- */
-#ifndef _MACH_TIMER_H
-#define _MACH_TIMER_H
-
-#define CALIBRATE_LATCH (5 * LATCH)
-
-static inline void mach_prepare_counter(void)
-{
- /* Set the Gate high, disable speaker */
- outb((inb(0x61) & ~0x02) | 0x01, 0x61);
-
- /*
- * Now let's take care of CTC channel 2
- *
- * Set the Gate high, program CTC channel 2 for mode 0,
- * (interrupt on terminal count mode), binary count,
- * load 5 * LATCH count, (LSB and MSB) to begin countdown.
- *
- * Some devices need a delay here.
- */
- outb(0xb0, 0x43); /* binary, mode 0, LSB/MSB, Ch
2 */
- outb_p(CALIBRATE_LATCH & 0xff, 0x42); /* LSB of count */
- outb_p(CALIBRATE_LATCH >> 8, 0x42); /* MSB of count */
-}
-
-static inline void mach_countup(unsigned long *count_p)
-{
- unsigned long count = 0;
- do {
- count++;
- } while ((inb_p(0x61) & 0x20) == 0);
- *count_p = count;
-}
-
-#endif /* !_MACH_TIMER_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/mach-xen/setup_arch_post.h
---
a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/mach-xen/setup_arch_post.h
Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,47 +0,0 @@
-/**
- * machine_specific_memory_setup - Hook for machine specific memory setup.
- *
- * Description:
- * This is included late in kernel/setup.c so that it can make
- * use of all of the static functions.
- **/
-
-static char * __init machine_specific_memory_setup(void)
-{
- char *who;
- unsigned long start_pfn, max_pfn;
-
- who = "Xen";
-
- start_pfn = 0;
- max_pfn = xen_start_info.nr_pages;
-
- e820.nr_map = 0;
- add_memory_region(PFN_PHYS(start_pfn), PFN_PHYS(max_pfn) -
PFN_PHYS(start_pfn), E820_RAM);
-
- return who;
-}
-
-void __init machine_specific_modify_cpu_capabilities(struct cpuinfo_x86 *c)
-{
- clear_bit(X86_FEATURE_VME, c->x86_capability);
- clear_bit(X86_FEATURE_DE, c->x86_capability);
- clear_bit(X86_FEATURE_PSE, c->x86_capability);
- clear_bit(X86_FEATURE_PGE, c->x86_capability);
- clear_bit(X86_FEATURE_SEP, c->x86_capability);
- if (!(xen_start_info.flags & SIF_PRIVILEGED))
- clear_bit(X86_FEATURE_MTRR, c->x86_capability);
-}
-
-extern void hypervisor_callback(void);
-extern void failsafe_callback(void);
-
-static void __init machine_specific_arch_setup(void)
-{
- HYPERVISOR_set_callbacks(
- (unsigned long) hypervisor_callback,
- (unsigned long) failsafe_callback,
- (unsigned long) system_call);
-
- machine_specific_modify_cpu_capabilities(&boot_cpu_data);
-}
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/mach-xen/setup_arch_pre.h
---
a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/mach-xen/setup_arch_pre.h
Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,5 +0,0 @@
-/* Hook to call BIOS initialisation function */
-
-#define ARCH_SETUP machine_specific_arch_setup();
-
-static void __init machine_specific_arch_setup(void);
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/mach-xen/smpboot_hooks.h
---
a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/mach-xen/smpboot_hooks.h
Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,55 +0,0 @@
-/* two abstractions specific to kernel/smpboot.c, mainly to cater to visws
- * which needs to alter them. */
-
-static inline void smpboot_clear_io_apic_irqs(void)
-{
-#ifdef CONFIG_X86_IO_APIC
- io_apic_irqs = 0;
-#endif
-}
-
-static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip)
-{
-#if 1
- printk("smpboot_setup_warm_reset_vector\n");
-#else
- CMOS_WRITE(0xa, 0xf);
- local_flush_tlb();
- Dprintk("1.\n");
- *((volatile unsigned short *) TRAMPOLINE_HIGH) = start_eip >> 4;
- Dprintk("2.\n");
- *((volatile unsigned short *) TRAMPOLINE_LOW) = start_eip & 0xf;
- Dprintk("3.\n");
-#endif
-}
-
-static inline void smpboot_restore_warm_reset_vector(void)
-{
- /*
- * Install writable page 0 entry to set BIOS data area.
- */
- local_flush_tlb();
-
- /*
- * Paranoid: Set warm reset code and vector here back
- * to default values.
- */
- CMOS_WRITE(0, 0xf);
-
- *((volatile long *) phys_to_virt(0x467)) = 0;
-}
-
-static inline void smpboot_setup_io_apic(void)
-{
-#ifdef CONFIG_X86_IO_APIC
- /*
- * Here we can be sure that there is an IO-APIC in the system. Let's
- * go and set it up:
- */
- if (!skip_ioapic_setup && nr_ioapics)
- setup_IO_APIC();
-#endif
-}
-
-
-#define smp_found_config (HYPERVISOR_shared_info->n_vcpu > 1)
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/mmu_context.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/mmu_context.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,126 +0,0 @@
-#ifndef __X86_64_MMU_CONTEXT_H
-#define __X86_64_MMU_CONTEXT_H
-
-#include <linux/config.h>
-#include <asm/desc.h>
-#include <asm/atomic.h>
-#include <asm/pgalloc.h>
-#include <asm/page.h>
-#include <asm/pda.h>
-#include <asm/pgtable.h>
-#include <asm/tlbflush.h>
-
-/*
- * possibly do the LDT unload here?
- */
-int init_new_context(struct task_struct *tsk, struct mm_struct *mm);
-void destroy_context(struct mm_struct *mm);
-
-static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct
*tsk)
-{
-#if 0 /* XEN: no lazy tlb */
- if (read_pda(mmu_state) == TLBSTATE_OK)
- write_pda(mmu_state, TLBSTATE_LAZY);
-#endif
-}
-
-#define prepare_arch_switch(rq,next) __prepare_arch_switch()
-#define finish_arch_switch(rq, next) spin_unlock_irq(&(rq)->lock)
-#define task_running(rq, p) ((rq)->curr == (p))
-
-static inline void __prepare_arch_switch(void)
-{
- /*
- * Save away %es, %ds, %fs and %gs. Must happen before reload
- * of cr3/ldt (i.e., not in __switch_to).
- */
- __asm__ __volatile__ (
- "movl %%es,%0 ; movl %%ds,%1 ; movl %%fs,%2 ; movl %%gs,%3"
- : "=m" (current->thread.es),
- "=m" (current->thread.ds),
- "=m" (current->thread.fsindex),
- "=m" (current->thread.gsindex) );
-
- if (current->thread.ds)
- __asm__ __volatile__ ( "movl %0,%%ds" : : "r" (0) );
-
- if (current->thread.es)
- __asm__ __volatile__ ( "movl %0,%%es" : : "r" (0) );
-
- if (current->thread.fsindex) {
- __asm__ __volatile__ ( "movl %0,%%fs" : : "r" (0) );
- current->thread.fs = 0;
- }
-
- if (current->thread.gsindex) {
- load_gs_index(0);
- current->thread.gs = 0;
- }
-}
-
-
-static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
- struct task_struct *tsk)
-{
- unsigned cpu = smp_processor_id();
- struct mmuext_op _op[3], *op = _op;
-
- if (likely(prev != next)) {
- /* stop flush ipis for the previous mm */
- clear_bit(cpu, &prev->cpu_vm_mask);
-#if 0 /* XEN: no lazy tlb */
- write_pda(mmu_state, TLBSTATE_OK);
- write_pda(active_mm, next);
-#endif
- set_bit(cpu, &next->cpu_vm_mask);
-
- /* load_cr3(next->pgd) */
- per_cpu(cur_pgd, smp_processor_id()) = next->pgd;
- op->cmd = MMUEXT_NEW_BASEPTR;
- op->mfn = pfn_to_mfn(__pa(next->pgd) >> PAGE_SHIFT);
- op++;
-
- /* xen_new_user_pt(__pa(__user_pgd(next->pgd))) */
- op->cmd = MMUEXT_NEW_USER_BASEPTR;
- op->mfn = pfn_to_mfn(__pa(__user_pgd(next->pgd)) >> PAGE_SHIFT);
- op++;
-
- if (unlikely(next->context.ldt != prev->context.ldt)) {
- /* load_LDT_nolock(&next->context, cpu) */
- op->cmd = MMUEXT_SET_LDT;
- op->linear_addr = (unsigned long)next->context.ldt;
- op->nr_ents = next->context.size;
- op++;
- }
-
- BUG_ON(HYPERVISOR_mmuext_op(_op, op-_op, NULL, DOMID_SELF));
- }
-
-#if 0 /* XEN: no lazy tlb */
- else {
- write_pda(mmu_state, TLBSTATE_OK);
- if (read_pda(active_mm) != next)
- out_of_line_bug();
- if(!test_and_set_bit(cpu, &next->cpu_vm_mask)) {
- /* We were in lazy tlb mode and leave_mm disabled
- * tlb flush IPI delivery. We must reload CR3
- * to make sure to use no freed page tables.
- */
- load_cr3(next->pgd);
- xen_new_user_pt(__pa(__user_pgd(next->pgd)));
- load_LDT_nolock(&next->context, cpu);
- }
- }
-#endif
-}
-
-#define deactivate_mm(tsk,mm) do { \
- load_gs_index(0); \
- asm volatile("movl %0,%%fs"::"r"(0)); \
-} while(0)
-
-#define activate_mm(prev, next) do { \
- switch_mm((prev),(next),NULL); \
-} while (0)
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/page.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/page.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,229 +0,0 @@
-#ifndef _X86_64_PAGE_H
-#define _X86_64_PAGE_H
-
-#include <linux/config.h>
-/* #include <linux/string.h> */
-#ifndef __ASSEMBLY__
-#include <linux/types.h>
-#endif
-#include <asm-xen/xen-public/xen.h>
-#include <asm-xen/foreign_page.h>
-
-#define arch_free_page(_page,_order) \
-({ int foreign = PageForeign(_page); \
- if (foreign) \
- (PageForeignDestructor(_page))(_page); \
- foreign; \
-})
-#define HAVE_ARCH_FREE_PAGE
-
-#ifdef CONFIG_XEN_SCRUB_PAGES
-#define scrub_pages(_p,_n) memset((void *)(_p), 0, (_n) << PAGE_SHIFT)
-#else
-#define scrub_pages(_p,_n) ((void)0)
-#endif
-
-/* PAGE_SHIFT determines the page size */
-#define PAGE_SHIFT 12
-#ifdef __ASSEMBLY__
-#define PAGE_SIZE (0x1 << PAGE_SHIFT)
-#else
-#define PAGE_SIZE (1UL << PAGE_SHIFT)
-#endif
-#define PAGE_MASK (~(PAGE_SIZE-1))
-#define PHYSICAL_PAGE_MASK (~(PAGE_SIZE-1) & (__PHYSICAL_MASK <<
PAGE_SHIFT))
-
-#define THREAD_ORDER 1
-#ifdef __ASSEMBLY__
-#define THREAD_SIZE (1 << (PAGE_SHIFT + THREAD_ORDER))
-#else
-#define THREAD_SIZE (1UL << (PAGE_SHIFT + THREAD_ORDER))
-#endif
-#define CURRENT_MASK (~(THREAD_SIZE-1))
-
-#define LARGE_PAGE_MASK (~(LARGE_PAGE_SIZE-1))
-#define LARGE_PAGE_SIZE (1UL << PMD_SHIFT)
-
-#define HPAGE_SHIFT PMD_SHIFT
-#define HPAGE_SIZE ((1UL) << HPAGE_SHIFT)
-#define HPAGE_MASK (~(HPAGE_SIZE - 1))
-#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
-
-#ifdef __KERNEL__
-#ifndef __ASSEMBLY__
-
-void clear_page(void *);
-void copy_page(void *, void *);
-
-#define clear_user_page(page, vaddr, pg) clear_page(page)
-#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
-
-#define alloc_zeroed_user_highpage(vma, vaddr) alloc_page_vma(GFP_HIGHUSER |
__GFP_ZERO, vma, vaddr)
-#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
-
-/**** MACHINE <-> PHYSICAL CONVERSION MACROS ****/
-extern u32 *phys_to_machine_mapping;
-#define pfn_to_mfn(_pfn) ((unsigned long) phys_to_machine_mapping[(unsigned
int)(_pfn)])
-#define mfn_to_pfn(_mfn) ((unsigned long) machine_to_phys_mapping[(unsigned
int)(_mfn)])
-static inline unsigned long phys_to_machine(unsigned long phys)
-{
- unsigned long machine = pfn_to_mfn(phys >> PAGE_SHIFT);
- machine = (machine << PAGE_SHIFT) | (phys & ~PAGE_MASK);
- return machine;
-}
-
-static inline unsigned long machine_to_phys(unsigned long machine)
-{
- unsigned long phys = mfn_to_pfn(machine >> PAGE_SHIFT);
- phys = (phys << PAGE_SHIFT) | (machine & ~PAGE_MASK);
- return phys;
-}
-
-/*
- * These are used to make use of C type-checking..
- */
-typedef struct { unsigned long pte; } pte_t;
-typedef struct { unsigned long pmd; } pmd_t;
-typedef struct { unsigned long pud; } pud_t;
-typedef struct { unsigned long pgd; } pgd_t;
-#define PTE_MASK PHYSICAL_PAGE_MASK
-
-typedef struct { unsigned long pgprot; } pgprot_t;
-
-#define pte_val(x) (((x).pte & 1) ? machine_to_phys((x).pte) : \
- (x).pte)
-#define pte_val_ma(x) ((x).pte)
-
-static inline unsigned long pmd_val(pmd_t x)
-{
- unsigned long ret = x.pmd;
- if (ret) ret = machine_to_phys(ret);
- return ret;
-}
-
-static inline unsigned long pud_val(pud_t x)
-{
- unsigned long ret = x.pud;
- if (ret) ret = machine_to_phys(ret);
- return ret;
-}
-
-static inline unsigned long pgd_val(pgd_t x)
-{
- unsigned long ret = x.pgd;
- if (ret) ret = machine_to_phys(ret);
- return ret;
-}
-
-#define pgprot_val(x) ((x).pgprot)
-
-#define __pte_ma(x) ((pte_t) { (x) } )
-
-static inline pte_t __pte(unsigned long x)
-{
- if (x & 1) x = phys_to_machine(x);
- return ((pte_t) { (x) });
-}
-
-static inline pmd_t __pmd(unsigned long x)
-{
- if ((x & 1)) x = phys_to_machine(x);
- return ((pmd_t) { (x) });
-}
-
-static inline pud_t __pud(unsigned long x)
-{
- if ((x & 1)) x = phys_to_machine(x);
- return ((pud_t) { (x) });
-}
-
-static inline pgd_t __pgd(unsigned long x)
-{
- if ((x & 1)) x = phys_to_machine(x);
- return ((pgd_t) { (x) });
-}
-
-#define __pgprot(x) ((pgprot_t) { (x) } )
-
-extern unsigned long vm_stack_flags, vm_stack_flags32;
-extern unsigned long vm_data_default_flags, vm_data_default_flags32;
-extern unsigned long vm_force_exec32;
-
-#define __START_KERNEL 0xffffffff80100000UL
-#define __START_KERNEL_map 0xffffffff80000000UL
-#define __PAGE_OFFSET 0xffff880000000000UL
-
-#else
-#define __START_KERNEL 0xffffffff80100000
-#define __START_KERNEL_map 0xffffffff80000000
-#define __PAGE_OFFSET 0xffff880000000000
-#endif /* !__ASSEMBLY__ */
-
-/* to align the pointer to the (next) page boundary */
-#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
-
-/* See Documentation/x86_64/mm.txt for a description of the memory map. */
-#define __PHYSICAL_MASK_SHIFT 46
-#define __PHYSICAL_MASK ((1UL << __PHYSICAL_MASK_SHIFT) - 1)
-#define __VIRTUAL_MASK_SHIFT 48
-#define __VIRTUAL_MASK ((1UL << __VIRTUAL_MASK_SHIFT) - 1)
-
-#define KERNEL_TEXT_SIZE (40UL*1024*1024)
-#define KERNEL_TEXT_START 0xffffffff80000000UL
-
-#ifndef __ASSEMBLY__
-
-#include <asm/bug.h>
-
-/* Pure 2^n version of get_order */
-extern __inline__ int get_order(unsigned long size)
-{
- int order;
-
- size = (size-1) >> (PAGE_SHIFT-1);
- order = -1;
- do {
- size >>= 1;
- order++;
- } while (size);
- return order;
-}
-
-#endif /* __ASSEMBLY__ */
-
-#define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET)
-
-/* Note: __pa(&symbol_visible_to_c) should be always replaced with __pa_symbol.
- Otherwise you risk miscompilation. */
-#define __pa(x) (((unsigned
long)(x)>=__START_KERNEL_map)?(unsigned long)(x) - (unsigned
long)__START_KERNEL_map:(unsigned long)(x) - PAGE_OFFSET)
-/* __pa_symbol should be used for C visible symbols.
- This seems to be the official gcc blessed way to do such arithmetic. */
-#define __pa_symbol(x) \
- ({unsigned long v; \
- asm("" : "=r" (v) : "0" (x)); \
- __pa(v); })
-
-#define __va(x) ((void *)((unsigned
long)(x)+PAGE_OFFSET))
-#ifndef CONFIG_DISCONTIGMEM
-#define pfn_to_page(pfn) (mem_map + (pfn))
-#define page_to_pfn(page) ((unsigned long)((page) - mem_map))
-#define pfn_valid(pfn) ((pfn) < max_mapnr)
-#endif
-
-#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
-#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
-#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
-
-/* VIRT <-> MACHINE conversion */
-#define virt_to_machine(_a) (phys_to_machine(__pa(_a)))
-#define machine_to_virt(_m) (__va(machine_to_phys(_m)))
-
-#define VM_DATA_DEFAULT_FLAGS \
- (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
- VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
-#define __HAVE_ARCH_GATE_AREA 1
-
-#endif /* __KERNEL__ */
-
-#endif /* _X86_64_PAGE_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/param.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/param.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,22 +0,0 @@
-#ifndef _ASMx86_64_PARAM_H
-#define _ASMx86_64_PARAM_H
-
-#ifdef __KERNEL__
-# define HZ 100 /* Internal kernel timer frequency */
-# define USER_HZ 100 /* .. some user interfaces are in
"ticks" */
-# define CLOCKS_PER_SEC (USER_HZ) /* like times() */
-#endif
-
-#ifndef HZ
-#define HZ 100
-#endif
-
-#define EXEC_PAGESIZE 4096
-
-#ifndef NOGROUP
-#define NOGROUP (-1)
-#endif
-
-#define MAXHOSTNAMELEN 64 /* max length of hostname */
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/pci.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/pci.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,148 +0,0 @@
-#ifndef __x8664_PCI_H
-#define __x8664_PCI_H
-
-#include <linux/config.h>
-#include <asm/io.h>
-
-#ifdef __KERNEL__
-
-#include <linux/mm.h> /* for struct page */
-
-/* Can be used to override the logic in pci_scan_bus for skipping
- already-configured bus numbers - to be used for buggy BIOSes
- or architectures with incomplete PCI setup by the loader */
-
-#ifdef CONFIG_PCI
-extern unsigned int pcibios_assign_all_busses(void);
-#else
-#define pcibios_assign_all_busses() 0
-#endif
-#define pcibios_scan_all_fns(a, b) 0
-
-extern int no_iommu, force_iommu;
-
-extern unsigned long pci_mem_start;
-#define PCIBIOS_MIN_IO 0x1000
-#define PCIBIOS_MIN_MEM (pci_mem_start)
-
-#define PCIBIOS_MIN_CARDBUS_IO 0x4000
-
-void pcibios_config_init(void);
-struct pci_bus * pcibios_scan_root(int bus);
-extern int (*pci_config_read)(int seg, int bus, int dev, int fn, int reg, int
len, u32 *value);
-extern int (*pci_config_write)(int seg, int bus, int dev, int fn, int reg, int
len, u32 value);
-
-void pcibios_set_master(struct pci_dev *dev);
-void pcibios_penalize_isa_irq(int irq);
-struct irq_routing_table *pcibios_get_irq_routing_table(void);
-int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
-
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <asm/scatterlist.h>
-#include <linux/string.h>
-#include <asm/page.h>
-
-extern int iommu_setup(char *opt);
-
-#ifdef CONFIG_GART_IOMMU
-/* The PCI address space does equal the physical memory
- * address space. The networking and block device layers use
- * this boolean for bounce buffer decisions
- *
- * On AMD64 it mostly equals, but we set it to zero to tell some subsystems
- * that an IOMMU is available.
- */
-#define PCI_DMA_BUS_IS_PHYS (no_iommu ? 1 : 0)
-
-/*
- * x86-64 always supports DAC, but sometimes it is useful to force
- * devices through the IOMMU to get automatic sg list merging.
- * Optional right now.
- */
-extern int iommu_sac_force;
-#define pci_dac_dma_supported(pci_dev, mask) (!iommu_sac_force)
-
-#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
- dma_addr_t ADDR_NAME;
-#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
- __u32 LEN_NAME;
-#define pci_unmap_addr(PTR, ADDR_NAME) \
- ((PTR)->ADDR_NAME)
-#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
- (((PTR)->ADDR_NAME) = (VAL))
-#define pci_unmap_len(PTR, LEN_NAME) \
- ((PTR)->LEN_NAME)
-#define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
- (((PTR)->LEN_NAME) = (VAL))
-
-#else
-/* No IOMMU */
-
-#define PCI_DMA_BUS_IS_PHYS 1
-#define pci_dac_dma_supported(pci_dev, mask) 1
-
-#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
-#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
-#define pci_unmap_addr(PTR, ADDR_NAME) (0)
-#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
-#define pci_unmap_len(PTR, LEN_NAME) (0)
-#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
-
-#endif
-
-#include <asm-generic/pci-dma-compat.h>
-
-static inline dma64_addr_t
-pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page, unsigned long
offset, int direction)
-{
- return ((dma64_addr_t) page_to_phys(page) +
- (dma64_addr_t) offset);
-}
-
-static inline struct page *
-pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr)
-{
- return virt_to_page(__va(dma_addr));
-}
-
-static inline unsigned long
-pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr)
-{
- return (dma_addr & ~PAGE_MASK);
-}
-
-static inline void
-pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev, dma64_addr_t dma_addr,
size_t len, int direction)
-{
-}
-
-static inline void
-pci_dac_dma_sync_single_for_device(struct pci_dev *pdev, dma64_addr_t
dma_addr, size_t len, int direction)
-{
- flush_write_buffers();
-}
-
-#define HAVE_PCI_MMAP
-extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
- enum pci_mmap_state mmap_state, int
write_combine);
-
-static inline void pcibios_add_platform_entries(struct pci_dev *dev)
-{
-}
-
-#endif /* __KERNEL__ */
-
-/* generic pci stuff */
-#ifdef CONFIG_PCI
-#include <asm-generic/pci.h>
-#endif
-
-/* On Xen we have to scan all functions since Xen hides bridges from
- * us. If a bridge is at fn=0 and that slot has a multifunction
- * device, we won't find the additional devices without scanning all
- * functions. */
-#undef pcibios_scan_all_fns
-#define pcibios_scan_all_fns(a, b) 1
-
-#endif /* __x8664_PCI_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/pda.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/pda.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,85 +0,0 @@
-#ifndef X86_64_PDA_H
-#define X86_64_PDA_H
-
-#ifndef __ASSEMBLY__
-#include <linux/stddef.h>
-#include <linux/types.h>
-#include <linux/cache.h>
-
-/* Per processor datastructure. %gs points to it while the kernel runs */
-struct x8664_pda {
- struct task_struct *pcurrent; /* Current process */
- unsigned long data_offset; /* Per cpu data offset from linker
address */
- struct x8664_pda *me; /* Pointer to itself */
- unsigned long kernelstack; /* top of kernel stack for current */
- unsigned long oldrsp; /* user rsp for system call */
- unsigned long irqrsp; /* Old rsp for interrupts. */
- int irqcount; /* Irq nesting counter. Starts with -1 */
- int cpunumber; /* Logical CPU number */
- char *irqstackptr; /* top of irqstack */
- unsigned int __softirq_pending;
- unsigned int __nmi_count; /* number of NMI on this CPUs */
- unsigned long idle_timestamp;
- struct mm_struct *active_mm;
- int mmu_state;
- unsigned apic_timer_irqs;
- int kernel_mode; /* kernel or user mode */
-} ____cacheline_aligned;
-
-
-#define IRQSTACK_ORDER 2
-#define IRQSTACKSIZE (PAGE_SIZE << IRQSTACK_ORDER)
-
-extern struct x8664_pda cpu_pda[];
-
-/*
- * There is no fast way to get the base address of the PDA, all the accesses
- * have to mention %fs/%gs. So it needs to be done this Torvaldian way.
- */
-#define sizeof_field(type,field) (sizeof(((type *)0)->field))
-#define typeof_field(type,field) typeof(((type *)0)->field)
-
-extern void __bad_pda_field(void);
-
-#define pda_offset(field) offsetof(struct x8664_pda, field)
-
-#define pda_to_op(op,field,val) do { \
- switch (sizeof_field(struct x8664_pda, field)) { \
-case 2: \
-asm volatile(op "w %0,%%gs:%P1"::"r" (val),"i"(pda_offset(field)):"memory");
break; \
-case 4: \
-asm volatile(op "l %0,%%gs:%P1"::"r" (val),"i"(pda_offset(field)):"memory");
break; \
-case 8: \
-asm volatile(op "q %0,%%gs:%P1"::"r" (val),"i"(pda_offset(field)):"memory");
break; \
- default: __bad_pda_field(); \
- } \
- } while (0)
-
-/*
- * AK: PDA read accesses should be neither volatile nor have an memory clobber.
- * Unfortunately removing them causes all hell to break lose currently.
- */
-#define pda_from_op(op,field) ({ \
- typedef typeof_field(struct x8664_pda, field) T__; T__ ret__; \
- switch (sizeof_field(struct x8664_pda, field)) { \
-case 2: \
-asm volatile(op "w %%gs:%P1,%0":"=r" (ret__):"i"(pda_offset(field)):"memory");
break;\
-case 4: \
-asm volatile(op "l %%gs:%P1,%0":"=r" (ret__):"i"(pda_offset(field)):"memory");
break;\
-case 8: \
-asm volatile(op "q %%gs:%P1,%0":"=r" (ret__):"i"(pda_offset(field)):"memory");
break;\
- default: __bad_pda_field(); \
- } \
- ret__; })
-
-
-#define read_pda(field) pda_from_op("mov",field)
-#define write_pda(field,val) pda_to_op("mov",field,val)
-#define add_pda(field,val) pda_to_op("add",field,val)
-#define sub_pda(field,val) pda_to_op("sub",field,val)
-
-#endif
-
-#define PDA_STACKOFFSET (5*8)
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/pgalloc.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/pgalloc.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,171 +0,0 @@
-#ifndef _X86_64_PGALLOC_H
-#define _X86_64_PGALLOC_H
-
-#include <asm/processor.h>
-#include <asm/fixmap.h>
-#include <asm/pda.h>
-#include <linux/threads.h>
-#include <linux/mm.h>
-#include <asm/io.h> /* for phys_to_virt and page_to_pseudophys */
-
-void make_page_readonly(void *va);
-void make_page_writable(void *va);
-void make_pages_readonly(void *va, unsigned int nr);
-void make_pages_writable(void *va, unsigned int nr);
-
-#define __user_pgd(pgd) ((pgd) + PTRS_PER_PGD)
-
-static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t
*pte)
-{
- set_pmd(pmd, __pmd(_PAGE_TABLE | __pa(pte)));
-}
-
-static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page
*pte)
-{
- set_pmd(pmd, __pmd(_PAGE_TABLE | (page_to_pfn(pte) << PAGE_SHIFT)));
-}
-
-static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
-{
- set_pud(pud, __pud(_PAGE_TABLE | __pa(pmd)));
-}
-
-/*
- * We need to use the batch mode here, but pgd_pupulate() won't be
- * be called frequently.
- */
-static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud)
-{
- set_pgd(pgd, __pgd(_PAGE_TABLE | __pa(pud)));
- set_pgd(__user_pgd(pgd), __pgd(_PAGE_TABLE | __pa(pud)));
-}
-
-extern __inline__ pmd_t *get_pmd(void)
-{
- pmd_t *pmd = (pmd_t *)get_zeroed_page(GFP_KERNEL);
- if (!pmd)
- return NULL;
- make_page_readonly(pmd);
- xen_pmd_pin(__pa(pmd));
- return pmd;
-}
-
-extern __inline__ void pmd_free(pmd_t *pmd)
-{
- BUG_ON((unsigned long)pmd & (PAGE_SIZE-1));
- xen_pmd_unpin(__pa(pmd));
- make_page_writable(pmd);
- free_page((unsigned long)pmd);
-}
-
-static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
-{
- pmd_t *pmd = (pmd_t *) get_zeroed_page(GFP_KERNEL|__GFP_REPEAT);
- if (!pmd)
- return NULL;
- make_page_readonly(pmd);
- xen_pmd_pin(__pa(pmd));
- return pmd;
-}
-
-static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
-{
- pud_t *pud = (pud_t *) get_zeroed_page(GFP_KERNEL|__GFP_REPEAT);
- if (!pud)
- return NULL;
- make_page_readonly(pud);
- xen_pud_pin(__pa(pud));
- return pud;
-}
-
-static inline void pud_free(pud_t *pud)
-{
- BUG_ON((unsigned long)pud & (PAGE_SIZE-1));
- xen_pud_unpin(__pa(pud));
- make_page_writable(pud);
- free_page((unsigned long)pud);
-}
-
-static inline pgd_t *pgd_alloc(struct mm_struct *mm)
-{
- /*
- * We allocate two contiguous pages for kernel and user.
- */
- unsigned boundary;
- pgd_t *pgd = (pgd_t *)__get_free_pages(GFP_KERNEL|__GFP_REPEAT, 1);
-
- if (!pgd)
- return NULL;
- /*
- * Copy kernel pointers in from init.
- * Could keep a freelist or slab cache of those because the kernel
- * part never changes.
- */
- boundary = pgd_index(__PAGE_OFFSET);
- memset(pgd, 0, boundary * sizeof(pgd_t));
- memcpy(pgd + boundary,
- init_level4_pgt + boundary,
- (PTRS_PER_PGD - boundary) * sizeof(pgd_t));
-
- memset(__user_pgd(pgd), 0, PAGE_SIZE); /* clean up user pgd */
- make_pages_readonly(pgd, 2);
-
- xen_pgd_pin(__pa(pgd)); /* kernel */
- xen_pgd_pin(__pa(__user_pgd(pgd))); /* user */
- /*
- * Set level3_user_pgt for vsyscall area
- */
- set_pgd(__user_pgd(pgd) + pgd_index(VSYSCALL_START),
- mk_kernel_pgd(__pa_symbol(level3_user_pgt)));
- return pgd;
-}
-
-static inline void pgd_free(pgd_t *pgd)
-{
- BUG_ON((unsigned long)pgd & (PAGE_SIZE-1));
- xen_pgd_unpin(__pa(pgd));
- xen_pgd_unpin(__pa(__user_pgd(pgd)));
- make_pages_writable(pgd, 2);
- free_pages((unsigned long)pgd, 1);
-}
-
-static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long
address)
-{
- pte_t *pte = (pte_t *)get_zeroed_page(GFP_KERNEL|__GFP_REPEAT);
- if (!pte)
- return NULL;
- make_page_readonly(pte);
- xen_pte_pin(__pa(pte));
- return pte;
-}
-
-static inline struct page *pte_alloc_one(struct mm_struct *mm, unsigned long
address)
-{
- pte_t *pte = (void *)get_zeroed_page(GFP_KERNEL|__GFP_REPEAT);
- if (!pte)
- return NULL;
- make_page_readonly(pte);
- xen_pte_pin(__pa(pte));
- return virt_to_page((unsigned long)pte);
-}
-
-/* Should really implement gc for free page table pages. This could be
- done with a reference count in struct page. */
-
-extern __inline__ void pte_free_kernel(pte_t *pte)
-{
- BUG_ON((unsigned long)pte & (PAGE_SIZE-1));
- xen_pte_unpin(__pa(pte));
- make_page_writable(pte);
- free_page((unsigned long)pte);
-}
-
-extern void pte_free(struct page *pte);
-
-//#define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
-
-#define __pte_free_tlb(tlb,x) pte_free((x))
-#define __pmd_free_tlb(tlb,x) pmd_free((x))
-#define __pud_free_tlb(tlb,x) pud_free((x))
-
-#endif /* _X86_64_PGALLOC_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/pgtable.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/pgtable.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,541 +0,0 @@
-#ifndef _X86_64_PGTABLE_H
-#define _X86_64_PGTABLE_H
-
-/*
- * This file contains the functions and defines necessary to modify and use
- * the x86-64 page table tree.
- *
- * x86-64 has a 4 level table setup. Generic linux MM only supports
- * three levels. The fourth level is currently a single static page that
- * is shared by everybody and just contains a pointer to the current
- * three level page setup on the beginning and some kernel mappings at
- * the end. For more details see Documentation/x86_64/mm.txt
- */
-#include <asm/processor.h>
-#include <asm/fixmap.h>
-#include <asm/bitops.h>
-#include <linux/threads.h>
-#include <asm/pda.h>
-#include <asm-xen/hypervisor.h>
-extern pud_t level3_user_pgt[512];
-extern pud_t init_level4_pgt[];
-extern pud_t init_level4_user_pgt[];
-extern unsigned long __supported_pte_mask;
-
-#define swapper_pg_dir NULL
-
-extern int nonx_setup(char *str);
-extern void paging_init(void);
-extern void clear_kernel_mapping(unsigned long addr, unsigned long size);
-
-extern unsigned long pgkern_mask;
-
-#define virt_to_ptep(__va) \
-({ \
- pgd_t *__pgd = pgd_offset_k((unsigned long)(__va)); \
- pud_t *__pud = pud_offset(__pgd, (unsigned long)(__va)); \
- pmd_t *__pmd = pmd_offset(__pud, (unsigned long)(__va)); \
- pte_offset_kernel(__pmd, (unsigned long)(__va)); \
-})
-
-#define arbitrary_virt_to_machine(__va)
\
-({ \
- pte_t *__pte = virt_to_ptep(__va); \
- unsigned long __pa = (*(unsigned long *)__pte) & PAGE_MASK; \
- __pa | ((unsigned long)(__va) & (PAGE_SIZE-1)); \
-})
-
-/*
- * ZERO_PAGE is a global shared page that is always zero: used
- * for zero-mapped memory areas etc..
- */
-extern unsigned long empty_zero_page[PAGE_SIZE/sizeof(unsigned long)];
-#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
-
-#define PGDIR_SHIFT 39
-#define PTRS_PER_PGD 512
-
-/*
- * PUDIR_SHIFT determines what a top-level page table entry can map
- */
-#define PUD_SHIFT 30
-#define PTRS_PER_PUD 512
-
-/*
- * PMD_SHIFT determines the size of the area a middle-level
- * page table can map
- */
-#define PMD_SHIFT 21
-#define PTRS_PER_PMD 512
-
-/*
- * entries per page directory level
- */
-#define PTRS_PER_PTE 512
-
-#define pte_ERROR(e) \
- printk("%s:%d: bad pte %p(%016lx).\n", __FILE__, __LINE__, &(e),
pte_val(e))
-#define pmd_ERROR(e) \
- printk("%s:%d: bad pmd %p(%016lx).\n", __FILE__, __LINE__, &(e),
pmd_val(e))
-#define pud_ERROR(e) \
- printk("%s:%d: bad pud %p(%016lx).\n", __FILE__, __LINE__, &(e),
pud_val(e))
-#define pgd_ERROR(e) \
- printk("%s:%d: bad pgd %p(%016lx).\n", __FILE__, __LINE__, &(e),
pgd_val(e))
-
-#define pgd_none(x) (!pgd_val(x))
-#define pud_none(x) (!pud_val(x))
-
-#define set_pte_batched(pteptr, pteval) \
- queue_l1_entry_update(pteptr, (pteval))
-
-extern inline int pud_present(pud_t pud) { return !pud_none(pud); }
-
-#ifdef CONFIG_SMP
-#define set_pte(pteptr, pteval) xen_l1_entry_update(pteptr, (pteval).pte)
-
-#else
-#define set_pte(pteptr, pteval) xen_l1_entry_update(pteptr, (pteval.pte))
-#if 0
-static inline void set_pte(pte_t *dst, pte_t val)
-{
- *dst = val;
-}
-#endif
-#endif
-
-#define set_pmd(pmdptr, pmdval) xen_l2_entry_update(pmdptr, (pmdval))
-#define set_pud(pudptr, pudval) xen_l3_entry_update(pudptr, (pudval))
-#define set_pgd(pgdptr, pgdval) xen_l4_entry_update(pgdptr, (pgdval))
-
-extern inline void pud_clear (pud_t * pud)
-{
- set_pud(pud, __pud(0));
-}
-
-#define __user_pgd(pgd) ((pgd) + PTRS_PER_PGD)
-
-extern inline void pgd_clear (pgd_t * pgd)
-{
- set_pgd(pgd, __pgd(0));
- set_pgd(__user_pgd(pgd), __pgd(0));
-}
-
-#define pud_page(pud) \
- ((unsigned long) __va(pud_val(pud) & PHYSICAL_PAGE_MASK))
-
-/*
- * A note on implementation of this atomic 'get-and-clear' operation.
- * This is actually very simple because Xen Linux can only run on a single
- * processor. Therefore, we cannot race other processors setting the 'accessed'
- * or 'dirty' bits on a page-table entry.
- * Even if pages are shared between domains, that is not a problem because
- * each domain will have separate page tables, with their own versions of
- * accessed & dirty state.
- */
-static inline pte_t ptep_get_and_clear(pte_t *xp)
-{
- pte_t pte = *xp;
- if (pte.pte)
- set_pte(xp, __pte_ma(0));
- return pte;
-}
-
-#define pte_same(a, b) ((a).pte == (b).pte)
-
-#define PMD_SIZE (1UL << PMD_SHIFT)
-#define PMD_MASK (~(PMD_SIZE-1))
-#define PUD_SIZE (1UL << PUD_SHIFT)
-#define PUD_MASK (~(PUD_SIZE-1))
-#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
-#define PGDIR_MASK (~(PGDIR_SIZE-1))
-
-#define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE)
-#define FIRST_USER_PGD_NR 0
-
-#ifndef __ASSEMBLY__
-#define MAXMEM 0x3fffffffffffUL
-#define VMALLOC_START 0xffffc20000000000UL
-#define VMALLOC_END 0xffffe1ffffffffffUL
-#define MODULES_VADDR 0xffffffff88000000UL
-#define MODULES_END 0xfffffffffff00000UL
-#define MODULES_LEN (MODULES_END - MODULES_VADDR)
-
-#define _PAGE_BIT_PRESENT 0
-#define _PAGE_BIT_RW 1
-#define _PAGE_BIT_USER 2
-#define _PAGE_BIT_PWT 3
-#define _PAGE_BIT_PCD 4
-#define _PAGE_BIT_ACCESSED 5
-#define _PAGE_BIT_DIRTY 6
-#define _PAGE_BIT_PSE 7 /* 4 MB (or 2MB) page */
-#define _PAGE_BIT_GLOBAL 8 /* Global TLB entry PPro+ */
-#define _PAGE_BIT_NX 63 /* No execute: only valid after cpuid
check */
-
-#define _PAGE_PRESENT 0x001
-#define _PAGE_RW 0x002
-#define _PAGE_USER 0x004
-#define _PAGE_PWT 0x008
-#define _PAGE_PCD 0x010
-#define _PAGE_ACCESSED 0x020
-#define _PAGE_DIRTY 0x040
-#define _PAGE_PSE 0x080 /* 2MB page */
-#define _PAGE_FILE 0x040 /* set:pagecache, unset:swap */
-#define _PAGE_GLOBAL 0x100 /* Global TLB entry */
-
-#define _PAGE_PROTNONE 0x080 /* If not present */
-#define _PAGE_NX (1UL<<_PAGE_BIT_NX)
-
-#define _PAGE_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED
| _PAGE_DIRTY)
-#define _KERNPG_TABLE _PAGE_TABLE
-
-#define _PAGE_CHG_MASK (PTE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
-
-#define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED)
-#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER |
_PAGE_ACCESSED | _PAGE_NX)
-#define PAGE_SHARED_EXEC __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER |
_PAGE_ACCESSED)
-#define PAGE_COPY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED
| _PAGE_NX)
-#define PAGE_COPY PAGE_COPY_NOEXEC
-#define PAGE_COPY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
-#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED |
_PAGE_NX)
-#define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER |
_PAGE_ACCESSED)
-#define __PAGE_KERNEL \
- (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_NX |
_PAGE_USER )
-#define __PAGE_KERNEL_EXEC \
- (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_USER )
-#define __PAGE_KERNEL_NOCACHE \
- (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_PCD | _PAGE_ACCESSED |
_PAGE_NX | _PAGE_USER )
-#define __PAGE_KERNEL_RO \
- (_PAGE_PRESENT | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_NX | _PAGE_USER )
-#define __PAGE_KERNEL_VSYSCALL \
- (_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_USER )
-#define __PAGE_KERNEL_VSYSCALL_NOCACHE \
- (_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_PCD | _PAGE_USER )
-#define __PAGE_KERNEL_LARGE \
- (__PAGE_KERNEL | _PAGE_PSE | _PAGE_USER )
-
-
-/*
- * We don't support GLOBAL page in xenolinux64
- */
-#define MAKE_GLOBAL(x) __pgprot((x))
-
-#define PAGE_KERNEL MAKE_GLOBAL(__PAGE_KERNEL)
-#define PAGE_KERNEL_EXEC MAKE_GLOBAL(__PAGE_KERNEL_EXEC)
-#define PAGE_KERNEL_RO MAKE_GLOBAL(__PAGE_KERNEL_RO)
-#define PAGE_KERNEL_NOCACHE MAKE_GLOBAL(__PAGE_KERNEL_NOCACHE)
-#define PAGE_KERNEL_VSYSCALL32 __pgprot(__PAGE_KERNEL_VSYSCALL)
-#define PAGE_KERNEL_VSYSCALL MAKE_GLOBAL(__PAGE_KERNEL_VSYSCALL)
-#define PAGE_KERNEL_LARGE MAKE_GLOBAL(__PAGE_KERNEL_LARGE)
-#define PAGE_KERNEL_VSYSCALL_NOCACHE
MAKE_GLOBAL(__PAGE_KERNEL_VSYSCALL_NOCACHE)
-
-/* xwr */
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_READONLY_EXEC
-#define __P101 PAGE_READONLY_EXEC
-#define __P110 PAGE_COPY_EXEC
-#define __P111 PAGE_COPY_EXEC
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY_EXEC
-#define __S101 PAGE_READONLY_EXEC
-#define __S110 PAGE_SHARED_EXEC
-#define __S111 PAGE_SHARED_EXEC
-
-static inline unsigned long pgd_bad(pgd_t pgd)
-{
- unsigned long val = pgd_val(pgd);
- val &= ~PTE_MASK;
- val &= ~(_PAGE_USER | _PAGE_DIRTY);
- return val & ~(_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED);
-}
-
-static inline unsigned long pud_bad(pud_t pud)
-{
- unsigned long val = pud_val(pud);
- val &= ~PTE_MASK;
- val &= ~(_PAGE_USER | _PAGE_DIRTY);
- return val & ~(_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED);
-}
-
-#define pte_none(x) (!(x).pte)
-#define pte_present(x) ((x).pte & (_PAGE_PRESENT | _PAGE_PROTNONE))
-#define pte_clear(xp) do { set_pte(xp, __pte(0)); } while (0)
-
-#define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT))
-
-/*
- * We detect special mappings in one of two ways:
- * 1. If the MFN is an I/O page then Xen will set the m2p entry
- * to be outside our maximum possible pseudophys range.
- * 2. If the MFN belongs to a different domain then we will certainly
- * not have MFN in our p2m table. Conversely, if the page is ours,
- * then we'll have p2m(m2p(MFN))==MFN.
- * If we detect a special mapping then it doesn't have a 'struct page'.
- * We force !pfn_valid() by returning an out-of-range pointer.
- *
- * NB. These checks require that, for any MFN that is not in our reservation,
- * there is no PFN such that p2m(PFN) == MFN. Otherwise we can get confused if
- * we are foreign-mapping the MFN, and the other domain as m2p(MFN) == PFN.
- * Yikes! Various places must poke in INVALID_P2M_ENTRY for safety.
- *
- * NB2. When deliberately mapping foreign pages into the p2m table, you *must*
- * use FOREIGN_FRAME(). This will cause pte_pfn() to choke on it, as we
- * require. In all the cases we care about, the high bit gets shifted out
- * (e.g., phys_to_machine()) so behaviour there is correct.
- */
-#define INVALID_P2M_ENTRY (~0U)
-#define FOREIGN_FRAME(_m) ((_m) | (1UL<<((sizeof(unsigned long)*8)-1)))
-#define pte_mfn(_pte) (((_pte).pte & PTE_MASK) >> PAGE_SHIFT)
-#define pte_pfn(_pte) \
-({ \
- unsigned long mfn = pte_mfn(_pte); \
- unsigned pfn = mfn_to_pfn(mfn); \
- if ((pfn >= max_mapnr) || (pfn_to_mfn(pfn) != mfn)) \
- pfn = max_mapnr; /* special: force !pfn_valid() */ \
- pfn; \
-})
-
-#define pte_page(x) pfn_to_page(pte_pfn(x))
-
-static inline pte_t pfn_pte(unsigned long page_nr, pgprot_t pgprot)
-{
- pte_t pte;
-
- (pte).pte = (pfn_to_mfn(page_nr) << PAGE_SHIFT);
- (pte).pte |= pgprot_val(pgprot);
- (pte).pte &= __supported_pte_mask;
- return pte;
-}
-
-#define pfn_pte_ma(pfn, prot) __pte_ma((((pfn) << PAGE_SHIFT) |
pgprot_val(prot)) & __supported_pte_mask)
-/*
- * The following only work if pte_present() is true.
- * Undefined behaviour if not..
- */
-#define __pte_val(x) ((x).pte)
-
-static inline int pte_user(pte_t pte) { return __pte_val(pte) &
_PAGE_USER; }
-extern inline int pte_read(pte_t pte) { return __pte_val(pte) &
_PAGE_USER; }
-extern inline int pte_exec(pte_t pte) { return __pte_val(pte) &
_PAGE_USER; }
-extern inline int pte_dirty(pte_t pte) { return __pte_val(pte) &
_PAGE_DIRTY; }
-extern inline int pte_young(pte_t pte) { return __pte_val(pte) &
_PAGE_ACCESSED; }
-extern inline int pte_write(pte_t pte) { return __pte_val(pte) &
_PAGE_RW; }
-static inline int pte_file(pte_t pte) { return __pte_val(pte) &
_PAGE_FILE; }
-
-extern inline pte_t pte_rdprotect(pte_t pte) { __pte_val(pte) &=
~_PAGE_USER; return pte; }
-extern inline pte_t pte_exprotect(pte_t pte) { __pte_val(pte) &=
~_PAGE_USER; return pte; }
-extern inline pte_t pte_mkclean(pte_t pte) { __pte_val(pte) &=
~_PAGE_DIRTY; return pte; }
-extern inline pte_t pte_mkold(pte_t pte) { __pte_val(pte) &=
~_PAGE_ACCESSED; return pte; }
-extern inline pte_t pte_wrprotect(pte_t pte) { __pte_val(pte) &= ~_PAGE_RW;
return pte; }
-extern inline pte_t pte_mkread(pte_t pte) { __pte_val(pte) |= _PAGE_USER;
return pte; }
-extern inline pte_t pte_mkexec(pte_t pte) { __pte_val(pte) |= _PAGE_USER;
return pte; }
-extern inline pte_t pte_mkdirty(pte_t pte) { __pte_val(pte) |=
_PAGE_DIRTY; return pte; }
-extern inline pte_t pte_mkyoung(pte_t pte) { __pte_val(pte) |=
_PAGE_ACCESSED; return pte; }
-extern inline pte_t pte_mkwrite(pte_t pte) { __pte_val(pte) |= _PAGE_RW;
return pte; }
-
-static inline int ptep_test_and_clear_dirty(pte_t *ptep)
-{
- pte_t pte = *ptep;
- int ret = pte_dirty(pte);
- if (ret)
- xen_l1_entry_update(ptep, pte_mkclean(pte).pte);
- return ret;
-}
-
-static inline int ptep_test_and_clear_young(pte_t *ptep)
-{
- pte_t pte = *ptep;
- int ret = pte_young(pte);
- if (ret)
- xen_l1_entry_update(ptep, pte_mkold(pte).pte);
- return ret;
-}
-
-static inline void ptep_set_wrprotect(pte_t *ptep)
-{
- pte_t pte = *ptep;
- if (pte_write(pte))
- set_pte(ptep, pte_wrprotect(pte));
-}
-static inline void ptep_mkdirty(pte_t *ptep)
-{
- pte_t pte = *ptep;
- if (!pte_dirty(pte))
- xen_l1_entry_update(ptep, pte_mkdirty(pte).pte);
-}
-
-/*
- * Macro to mark a page protection value as "uncacheable".
- */
-#define pgprot_noncached(prot) (__pgprot(pgprot_val(prot) | _PAGE_PCD |
_PAGE_PWT))
-
-#define __LARGE_PTE (_PAGE_PSE|_PAGE_PRESENT)
-static inline int pmd_large(pmd_t pte) {
- return (pmd_val(pte) & __LARGE_PTE) == __LARGE_PTE;
-}
-
-
-/*
- * Conversion functions: convert a page and protection to a page entry,
- * and a page entry and page directory to the page they refer to.
- */
-
-#define page_pte(page) page_pte_prot(page, __pgprot(0))
-
-/*
- * Level 4 access.
- * Never use these in the common code.
- */
-#define pgd_page(pgd) ((unsigned long) __va(pgd_val(pgd) & PTE_MASK))
-#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
-#define pgd_offset(mm, addr) ((mm)->pgd + pgd_index(addr))
-#define pgd_offset_k(address) (pgd_t *)(init_level4_pgt + pgd_index(address))
-#define pgd_present(pgd) (pgd_val(pgd) & _PAGE_PRESENT)
-#define mk_kernel_pgd(address) __pgd((address) | _KERNPG_TABLE)
-
-/* PUD - Level3 access */
-/* to find an entry in a page-table-directory. */
-#define pud_index(address) ((address >> PUD_SHIFT) & (PTRS_PER_PUD-1))
-#define pud_offset(pgd, address) ((pud_t *) pgd_page(*(pgd)) +
pud_index(address))
-static inline pud_t *__pud_offset_k(pud_t *pud, unsigned long address)
-{
- return pud + pud_index(address);
-}
-
-/* Find correct pud via the hidden fourth level page level: */
-
-/* This accesses the reference page table of the boot cpu.
- Other CPUs get synced lazily via the page fault handler. */
-static inline pud_t *pud_offset_k(unsigned long address)
-{
- unsigned long addr;
-
- addr = pud_val(init_level4_pgt[pud_index(address)]);
- addr &= PHYSICAL_PAGE_MASK; /* machine physical */
- addr = machine_to_phys(addr);
- return __pud_offset_k((pud_t *)__va(addr), address);
-}
-
-/* PMD - Level 2 access */
-#define pmd_page_kernel(pmd) ((unsigned long) __va(pmd_val(pmd) & PTE_MASK))
-#define pmd_page(pmd) (pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT))
-
-#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
-#define pmd_offset(dir, address) ((pmd_t *) pud_page(*(dir)) + \
- pmd_index(address))
-#define pmd_none(x) (!pmd_val(x))
-#define pmd_present(x) (pmd_val(x) & _PAGE_PRESENT)
-#define pmd_clear(xp) do { set_pmd(xp, __pmd(0)); } while (0)
-#define pmd_bad(x) ((pmd_val(x) & ~PTE_MASK) != _KERNPG_TABLE )
-#define pfn_pmd(nr,prot) (__pmd(((nr) << PAGE_SHIFT) | pgprot_val(prot)))
-#define pmd_pfn(x) ((pmd_val(x) >> PAGE_SHIFT) & __PHYSICAL_MASK)
-
-#define pte_to_pgoff(pte) ((pte_val(pte) & PHYSICAL_PAGE_MASK) >> PAGE_SHIFT)
-#define pgoff_to_pte(off) ((pte_t) { ((off) << PAGE_SHIFT) | _PAGE_FILE })
-#define PTE_FILE_MAX_BITS __PHYSICAL_MASK_SHIFT
-
-/* PTE - Level 1 access. */
-
-/* page, protection -> pte */
-#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))
-#define mk_pte_huge(entry) (pte_val(entry) |= _PAGE_PRESENT | _PAGE_PSE)
-
-/* physical address -> PTE */
-static inline pte_t mk_pte_phys(unsigned long physpage, pgprot_t pgprot)
-{
- pte_t pte;
- (pte).pte = physpage | pgprot_val(pgprot);
- return pte;
-}
-
-/* Change flags of a PTE */
-extern inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
-{
- (pte).pte &= _PAGE_CHG_MASK;
- (pte).pte |= pgprot_val(newprot);
- (pte).pte &= __supported_pte_mask;
- return pte;
-}
-
-#define pte_index(address) \
- ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
-#define pte_offset_kernel(dir, address) ((pte_t *) pmd_page_kernel(*(dir)) + \
- pte_index(address))
-
-/* x86-64 always has all page tables mapped. */
-#define pte_offset_map(dir,address) pte_offset_kernel(dir,address)
-#define pte_offset_map_nested(dir,address) pte_offset_kernel(dir,address)
-#define pte_unmap(pte) /* NOP */
-#define pte_unmap_nested(pte) /* NOP */
-
-#define update_mmu_cache(vma,address,pte) do { } while (0)
-
-/* We only update the dirty/accessed state if we set
- * the dirty bit by hand in the kernel, since the hardware
- * will do the accessed bit for us, and we don't want to
- * race with other CPU's that might be updating the dirty
- * bit at the same time. */
-#define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
-#define ptep_set_access_flags(__vma, __address, __ptep, __entry, __dirty) \
- do { \
- if (__dirty) { \
- set_pte(__ptep, __entry); \
- flush_tlb_page(__vma, __address); \
- } \
- } while (0)
-
-/* Encode and de-code a swap entry */
-#define __swp_type(x) (((x).val >> 1) & 0x3f)
-#define __swp_offset(x) ((x).val >> 8)
-#define __swp_entry(type, offset) ((swp_entry_t) { ((type) << 1) |
((offset) << 8) })
-#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
-#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
-
-#endif /* !__ASSEMBLY__ */
-
-extern int kern_addr_valid(unsigned long addr);
-
-#define DOMID_LOCAL (0xFFFFU)
-
-int direct_remap_area_pages(struct mm_struct *mm,
- unsigned long address,
- unsigned long machine_addr,
- unsigned long size,
- pgprot_t prot,
- domid_t domid);
-int __direct_remap_area_pages(struct mm_struct *mm,
- unsigned long address,
- unsigned long size,
- mmu_update_t *v);
-
-#define io_remap_page_range(vma, vaddr, paddr, size, prot) \
- remap_pfn_range(vma, vaddr, (paddr) >> PAGE_SHIFT, size, prot)
-
-#define HAVE_ARCH_UNMAPPED_AREA
-
-#define pgtable_cache_init() do { } while (0)
-#define check_pgt_cache() do { } while (0)
-
-#define PAGE_AGP PAGE_KERNEL_NOCACHE
-#define HAVE_PAGE_AGP 1
-
-/* fs/proc/kcore.c */
-#define kc_vaddr_to_offset(v) ((v) & __VIRTUAL_MASK)
-#define kc_offset_to_vaddr(o) \
- (((o) & (1UL << (__VIRTUAL_MASK_SHIFT-1))) ? ((o) | (~__VIRTUAL_MASK)) :
(o))
-
-#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
-#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_DIRTY
-#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
-#define __HAVE_ARCH_PTEP_SET_WRPROTECT
-#define __HAVE_ARCH_PTEP_MKDIRTY
-#define __HAVE_ARCH_PTE_SAME
-#include <asm-generic/pgtable.h>
-
-#endif /* _X86_64_PGTABLE_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/processor.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/processor.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,474 +0,0 @@
-/*
- * include/asm-x86_64/processor.h
- *
- * Copyright (C) 1994 Linus Torvalds
- */
-
-#ifndef __ASM_X86_64_PROCESSOR_H
-#define __ASM_X86_64_PROCESSOR_H
-
-#include <asm/segment.h>
-#include <asm/page.h>
-#include <asm/types.h>
-#include <asm/sigcontext.h>
-#include <asm/cpufeature.h>
-#include <linux/config.h>
-#include <linux/threads.h>
-#include <asm/msr.h>
-#include <asm/current.h>
-#include <asm/system.h>
-#include <asm/mmsegment.h>
-#include <asm/percpu.h>
-#include <linux/personality.h>
-
-#define TF_MASK 0x00000100
-#define IF_MASK 0x00000200
-#define IOPL_MASK 0x00003000
-#define NT_MASK 0x00004000
-#define VM_MASK 0x00020000
-#define AC_MASK 0x00040000
-#define VIF_MASK 0x00080000 /* virtual interrupt flag */
-#define VIP_MASK 0x00100000 /* virtual interrupt pending */
-#define ID_MASK 0x00200000
-
-#define desc_empty(desc) \
- (!((desc)->a + (desc)->b))
-
-#define desc_equal(desc1, desc2) \
- (((desc1)->a == (desc2)->a) && ((desc1)->b == (desc2)->b))
-
-/*
- * Default implementation of macro that returns current
- * instruction pointer ("program counter").
- */
-#define current_text_addr() ({ void *pc; asm volatile("leaq
1f(%%rip),%0\n1:":"=r"(pc)); pc; })
-
-/*
- * CPU type and hardware bug flags. Kept separately for each CPU.
- */
-
-struct cpuinfo_x86 {
- __u8 x86; /* CPU family */
- __u8 x86_vendor; /* CPU vendor */
- __u8 x86_model;
- __u8 x86_mask;
- int cpuid_level; /* Maximum supported CPUID level, -1=no CPUID */
- __u32 x86_capability[NCAPINTS];
- char x86_vendor_id[16];
- char x86_model_id[64];
- int x86_cache_size; /* in KB */
- int x86_clflush_size;
- int x86_cache_alignment;
- int x86_tlbsize; /* number of 4K pages in DTLB/ITLB combined(in
pages)*/
- __u8 x86_virt_bits, x86_phys_bits;
- __u8 x86_num_cores;
- __u8 x86_apicid;
- __u32 x86_power;
- __u32 x86_cpuid_level; /* Max CPUID function supported */
- unsigned long loops_per_jiffy;
-} ____cacheline_aligned;
-
-#define X86_VENDOR_INTEL 0
-#define X86_VENDOR_CYRIX 1
-#define X86_VENDOR_AMD 2
-#define X86_VENDOR_UMC 3
-#define X86_VENDOR_NEXGEN 4
-#define X86_VENDOR_CENTAUR 5
-#define X86_VENDOR_RISE 6
-#define X86_VENDOR_TRANSMETA 7
-#define X86_VENDOR_NUM 8
-#define X86_VENDOR_UNKNOWN 0xff
-
-#ifdef CONFIG_SMP
-extern struct cpuinfo_x86 cpu_data[];
-#define current_cpu_data cpu_data[smp_processor_id()]
-#else
-#define cpu_data (&boot_cpu_data)
-#define current_cpu_data boot_cpu_data
-#endif
-
-extern char ignore_irq13;
-
-extern void identify_cpu(struct cpuinfo_x86 *);
-extern void print_cpu_info(struct cpuinfo_x86 *);
-extern unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c);
-extern void dodgy_tsc(void);
-
-/*
- * EFLAGS bits
- */
-#define X86_EFLAGS_CF 0x00000001 /* Carry Flag */
-#define X86_EFLAGS_PF 0x00000004 /* Parity Flag */
-#define X86_EFLAGS_AF 0x00000010 /* Auxillary carry Flag */
-#define X86_EFLAGS_ZF 0x00000040 /* Zero Flag */
-#define X86_EFLAGS_SF 0x00000080 /* Sign Flag */
-#define X86_EFLAGS_TF 0x00000100 /* Trap Flag */
-#define X86_EFLAGS_IF 0x00000200 /* Interrupt Flag */
-#define X86_EFLAGS_DF 0x00000400 /* Direction Flag */
-#define X86_EFLAGS_OF 0x00000800 /* Overflow Flag */
-#define X86_EFLAGS_IOPL 0x00003000 /* IOPL mask */
-#define X86_EFLAGS_NT 0x00004000 /* Nested Task */
-#define X86_EFLAGS_RF 0x00010000 /* Resume Flag */
-#define X86_EFLAGS_VM 0x00020000 /* Virtual Mode */
-#define X86_EFLAGS_AC 0x00040000 /* Alignment Check */
-#define X86_EFLAGS_VIF 0x00080000 /* Virtual Interrupt Flag */
-#define X86_EFLAGS_VIP 0x00100000 /* Virtual Interrupt Pending */
-#define X86_EFLAGS_ID 0x00200000 /* CPUID detection flag */
-
-/*
- * Intel CPU features in CR4
- */
-#define X86_CR4_VME 0x0001 /* enable vm86 extensions */
-#define X86_CR4_PVI 0x0002 /* virtual interrupts flag enable */
-#define X86_CR4_TSD 0x0004 /* disable time stamp at ipl 3 */
-#define X86_CR4_DE 0x0008 /* enable debugging extensions */
-#define X86_CR4_PSE 0x0010 /* enable page size extensions */
-#define X86_CR4_PAE 0x0020 /* enable physical address extensions */
-#define X86_CR4_MCE 0x0040 /* Machine check enable */
-#define X86_CR4_PGE 0x0080 /* enable global pages */
-#define X86_CR4_PCE 0x0100 /* enable performance counters at ipl 3
*/
-#define X86_CR4_OSFXSR 0x0200 /* enable fast FPU save and restore */
-#define X86_CR4_OSXMMEXCPT 0x0400 /* enable unmasked SSE exceptions */
-
-/*
- * Save the cr4 feature set we're using (ie
- * Pentium 4MB enable and PPro Global page
- * enable), so that any CPU's that boot up
- * after us can get the correct flags.
- */
-extern unsigned long mmu_cr4_features;
-
-static inline void set_in_cr4 (unsigned long mask)
-{
- mmu_cr4_features |= mask;
- switch (mask) {
- case X86_CR4_OSFXSR:
- case X86_CR4_OSXMMEXCPT:
- break;
- default:
- do {
- const char *msg = "Xen unsupported cr4 update\n";
- (void)HYPERVISOR_console_io(
- CONSOLEIO_write, __builtin_strlen(msg),
- (char *)msg);
- BUG();
- } while (0);
- }
-}
-
-#define load_cr3(pgdir) do { \
- xen_pt_switch(__pa(pgdir)); \
- per_cpu(cur_pgd, smp_processor_id()) = pgdir; \
-} while (/* CONSTCOND */0)
-
-/*
- * Bus types
- */
-#define MCA_bus 0
-#define MCA_bus__is_a_macro
-
-
-/*
- * User space process size. 47bits.
- */
-#define TASK_SIZE (0x800000000000UL)
-
-/* This decides where the kernel will search for a free chunk of vm
- * space during mmap's.
- */
-#define IA32_PAGE_OFFSET ((current->personality & ADDR_LIMIT_3GB) ? 0xc0000000
: 0xFFFFe000)
-#define TASK_UNMAPPED_32 PAGE_ALIGN(IA32_PAGE_OFFSET/3)
-#define TASK_UNMAPPED_64 PAGE_ALIGN(TASK_SIZE/3)
-#define TASK_UNMAPPED_BASE \
- (test_thread_flag(TIF_IA32) ? TASK_UNMAPPED_32 : TASK_UNMAPPED_64)
-
-/*
- * Size of io_bitmap.
- */
-#define IO_BITMAP_BITS 65536
-#define IO_BITMAP_BYTES (IO_BITMAP_BITS/8)
-#define IO_BITMAP_LONGS (IO_BITMAP_BYTES/sizeof(long))
-#define IO_BITMAP_OFFSET offsetof(struct tss_struct,io_bitmap)
-#define INVALID_IO_BITMAP_OFFSET 0x8000
-
-struct i387_fxsave_struct {
- u16 cwd;
- u16 swd;
- u16 twd;
- u16 fop;
- u64 rip;
- u64 rdp;
- u32 mxcsr;
- u32 mxcsr_mask;
- u32 st_space[32]; /* 8*16 bytes for each FP-reg = 128 bytes */
- u32 xmm_space[64]; /* 16*16 bytes for each XMM-reg = 128 bytes */
- u32 padding[24];
-} __attribute__ ((aligned (16)));
-
-union i387_union {
- struct i387_fxsave_struct fxsave;
-};
-
-struct tss_struct {
- u32 reserved1;
- u64 rsp0;
- u64 rsp1;
- u64 rsp2;
- u64 reserved2;
- u64 ist[7];
- u32 reserved3;
- u32 reserved4;
- u16 reserved5;
- u16 io_bitmap_base;
- /*
- * The extra 1 is there because the CPU will access an
- * additional byte beyond the end of the IO permission
- * bitmap. The extra byte must be all 1 bits, and must
- * be within the limit. Thus we have:
- *
- * 128 bytes, the bitmap itself, for ports 0..0x3ff
- * 8 bytes, for an extra "long" of ~0UL
- */
- unsigned long io_bitmap[IO_BITMAP_LONGS + 1];
-} __attribute__((packed)) ____cacheline_aligned;
-
-extern struct cpuinfo_x86 boot_cpu_data;
-DECLARE_PER_CPU(struct tss_struct,init_tss);
-DECLARE_PER_CPU(pgd_t *, cur_pgd);
-
-#define ARCH_MIN_TASKALIGN 16
-
-struct thread_struct {
- unsigned long rsp0;
- unsigned long rsp;
- unsigned long userrsp; /* Copy from PDA */
- unsigned long fs;
- unsigned long gs;
- unsigned int io_pl;
- unsigned short es, ds, fsindex, gsindex;
-/* Hardware debugging registers */
- unsigned long debugreg0;
- unsigned long debugreg1;
- unsigned long debugreg2;
- unsigned long debugreg3;
- unsigned long debugreg6;
- unsigned long debugreg7;
-/* fault info */
- unsigned long cr2, trap_no, error_code;
-/* floating point info */
- union i387_union i387 __attribute__((aligned(16)));
-/* IO permissions. the bitmap could be moved into the GDT, that would make
- switch faster for a limited number of ioperm using tasks. -AK */
- int ioperm;
- unsigned long *io_bitmap_ptr;
- unsigned io_bitmap_max;
-/* cached TLS descriptors. */
- u64 tls_array[GDT_ENTRY_TLS_ENTRIES];
-} __attribute__((aligned(16)));
-
-#define INIT_THREAD {}
-
-#define INIT_MMAP \
-{ &init_mm, 0, 0, NULL, PAGE_SHARED, VM_READ | VM_WRITE | VM_EXEC, 1, NULL,
NULL }
-
-#define STACKFAULT_STACK 1
-#define DOUBLEFAULT_STACK 2
-#define NMI_STACK 3
-#define DEBUG_STACK 4
-#define MCE_STACK 5
-#define N_EXCEPTION_STACKS 5 /* hw limit: 7 */
-#define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER)
-#define EXCEPTION_STACK_ORDER 0
-
-#define start_thread(regs,new_rip,new_rsp) do { \
- asm volatile("movl %0,%%fs; movl %0,%%es; movl %0,%%ds": :"r" (0));
\
- load_gs_index(0);
\
- (regs)->rip = (new_rip);
\
- (regs)->rsp = (new_rsp);
\
- write_pda(oldrsp, (new_rsp));
\
- (regs)->cs = __USER_CS;
\
- (regs)->ss = __USER_DS;
\
- (regs)->eflags = 0x200;
\
- set_fs(USER_DS);
\
-} while(0)
-
-struct task_struct;
-struct mm_struct;
-
-/* Free all resources held by a thread. */
-extern void release_thread(struct task_struct *);
-
-/* Prepare to copy thread state - unlazy all lazy status */
-extern void prepare_to_copy(struct task_struct *tsk);
-
-/*
- * create a kernel thread without removing it from tasklists
- */
-extern long kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
-
-/*
- * Return saved PC of a blocked thread.
- * What is this good for? it will be always the scheduler or ret_from_fork.
- */
-#define thread_saved_pc(t) (*(unsigned long *)((t)->thread.rsp - 8))
-
-extern unsigned long get_wchan(struct task_struct *p);
-#define KSTK_EIP(tsk) \
- (((struct pt_regs *)(tsk->thread.rsp0 - sizeof(struct pt_regs)))->rip)
-#define KSTK_ESP(tsk) -1 /* sorry. doesn't work for syscall. */
-
-
-struct microcode_header {
- unsigned int hdrver;
- unsigned int rev;
- unsigned int date;
- unsigned int sig;
- unsigned int cksum;
- unsigned int ldrver;
- unsigned int pf;
- unsigned int datasize;
- unsigned int totalsize;
- unsigned int reserved[3];
-};
-
-struct microcode {
- struct microcode_header hdr;
- unsigned int bits[0];
-};
-
-typedef struct microcode microcode_t;
-typedef struct microcode_header microcode_header_t;
-
-/* microcode format is extended from prescott processors */
-struct extended_signature {
- unsigned int sig;
- unsigned int pf;
- unsigned int cksum;
-};
-
-struct extended_sigtable {
- unsigned int count;
- unsigned int cksum;
- unsigned int reserved[3];
- struct extended_signature sigs[0];
-};
-
-/* '6' because it used to be for P6 only (but now covers Pentium 4 as well) */
-#define MICROCODE_IOCFREE _IO('6',0)
-
-
-#define ASM_NOP1 K8_NOP1
-#define ASM_NOP2 K8_NOP2
-#define ASM_NOP3 K8_NOP3
-#define ASM_NOP4 K8_NOP4
-#define ASM_NOP5 K8_NOP5
-#define ASM_NOP6 K8_NOP6
-#define ASM_NOP7 K8_NOP7
-#define ASM_NOP8 K8_NOP8
-
-/* Opteron nops */
-#define K8_NOP1 ".byte 0x90\n"
-#define K8_NOP2 ".byte 0x66,0x90\n"
-#define K8_NOP3 ".byte 0x66,0x66,0x90\n"
-#define K8_NOP4 ".byte 0x66,0x66,0x66,0x90\n"
-#define K8_NOP5 K8_NOP3 K8_NOP2
-#define K8_NOP6 K8_NOP3 K8_NOP3
-#define K8_NOP7 K8_NOP4 K8_NOP3
-#define K8_NOP8 K8_NOP4 K8_NOP4
-
-#define ASM_NOP_MAX 8
-
-/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
-extern inline void rep_nop(void)
-{
- __asm__ __volatile__("rep;nop": : :"memory");
-}
-
-/* Stop speculative execution */
-extern inline void sync_core(void)
-{
- int tmp;
- asm volatile("cpuid" : "=a" (tmp) : "0" (1) :
"ebx","ecx","edx","memory");
-}
-
-#define cpu_has_fpu 1
-
-#define ARCH_HAS_PREFETCH
-static inline void prefetch(void *x)
-{
- asm volatile("prefetcht0 %0" :: "m" (*(unsigned long *)x));
-}
-
-#define ARCH_HAS_PREFETCHW 1
-static inline void prefetchw(void *x)
-{
- alternative_input(ASM_NOP5,
- "prefetchw (%1)",
- X86_FEATURE_3DNOW,
- "r" (x));
-}
-
-#define ARCH_HAS_SPINLOCK_PREFETCH 1
-
-#define spin_lock_prefetch(x) prefetchw(x)
-
-#define cpu_relax() rep_nop()
-
-/*
- * NSC/Cyrix CPU configuration register indexes
- */
-#define CX86_CCR0 0xc0
-#define CX86_CCR1 0xc1
-#define CX86_CCR2 0xc2
-#define CX86_CCR3 0xc3
-#define CX86_CCR4 0xe8
-#define CX86_CCR5 0xe9
-#define CX86_CCR6 0xea
-#define CX86_CCR7 0xeb
-#define CX86_DIR0 0xfe
-#define CX86_DIR1 0xff
-#define CX86_ARR_BASE 0xc4
-#define CX86_RCR_BASE 0xdc
-
-/*
- * NSC/Cyrix CPU indexed register access macros
- */
-
-#define getCx86(reg) ({ outb((reg), 0x22); inb(0x23); })
-
-#define setCx86(reg, data) do { \
- outb((reg), 0x22); \
- outb((data), 0x23); \
-} while (0)
-
-static inline void __monitor(const void *eax, unsigned long ecx,
- unsigned long edx)
-{
- /* "monitor %eax,%ecx,%edx;" */
- asm volatile(
- ".byte 0x0f,0x01,0xc8;"
- : :"a" (eax), "c" (ecx), "d"(edx));
-}
-
-static inline void __mwait(unsigned long eax, unsigned long ecx)
-{
- /* "mwait %eax,%ecx;" */
- asm volatile(
- ".byte 0x0f,0x01,0xc9;"
- : :"a" (eax), "c" (ecx));
-}
-
-#define stack_current() \
-({ \
- struct thread_info *ti; \
- asm("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK)); \
- ti->task; \
-})
-
-#define cache_line_size() (boot_cpu_data.x86_cache_alignment)
-
-extern unsigned long boot_option_idle_override;
-/* Boot loader type from the setup header */
-extern int bootloader_type;
-
-#endif /* __ASM_X86_64_PROCESSOR_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/ptrace.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/ptrace.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,119 +0,0 @@
-#ifndef _X86_64_PTRACE_H
-#define _X86_64_PTRACE_H
-
-#if defined(__ASSEMBLY__) || defined(__FRAME_OFFSETS)
-#define R15 0
-#define R14 8
-#define R13 16
-#define R12 24
-#define RBP 32
-#define RBX 40
-/* arguments: interrupts/non tracing syscalls only save upto here*/
-#define R11 48
-#define R10 56
-#define R9 64
-#define R8 72
-#define RAX 80
-#define RCX 88
-#define RDX 96
-#define RSI 104
-#define RDI 112
-#define ORIG_RAX 120 /* = ERROR */
-/* end of arguments */
-/* cpu exception frame or undefined in case of fast syscall. */
-#define RIP 128
-#define CS 136
-#define EFLAGS 144
-#define RSP 152
-#define SS 160
-#define ARGOFFSET R11
-#endif /* __ASSEMBLY__ */
-
-/* top of stack page */
-#define FRAME_SIZE 168
-
-#define PTRACE_OLDSETOPTIONS 21
-
-#ifndef __ASSEMBLY__
-
-struct pt_regs {
- unsigned long r15;
- unsigned long r14;
- unsigned long r13;
- unsigned long r12;
- unsigned long rbp;
- unsigned long rbx;
-/* arguments: non interrupts/non tracing syscalls only save upto here*/
- unsigned long r11;
- unsigned long r10;
- unsigned long r9;
- unsigned long r8;
- unsigned long rax;
- unsigned long rcx;
- unsigned long rdx;
- unsigned long rsi;
- unsigned long rdi;
- unsigned long orig_rax;
-/* end of arguments */
-/* cpu exception frame or undefined */
- unsigned long rip;
- unsigned long cs;
- unsigned long eflags;
- unsigned long rsp;
- unsigned long ss;
-/* top of stack page */
-};
-
-#endif
-
-/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
-#define PTRACE_GETREGS 12
-#define PTRACE_SETREGS 13
-#define PTRACE_GETFPREGS 14
-#define PTRACE_SETFPREGS 15
-#define PTRACE_GETFPXREGS 18
-#define PTRACE_SETFPXREGS 19
-
-/* only useful for access 32bit programs */
-#define PTRACE_GET_THREAD_AREA 25
-#define PTRACE_SET_THREAD_AREA 26
-
-#define PTRACE_ARCH_PRCTL 30 /* arch_prctl for child */
-
-#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
-#define user_mode(regs) (!!((regs)->cs & 3))
-#define instruction_pointer(regs) ((regs)->rip)
-#if defined(CONFIG_SMP) && defined(CONFIG_FRAME_POINTER)
-extern unsigned long profile_pc(struct pt_regs *regs);
-#else
-#define profile_pc(regs) instruction_pointer(regs)
-#endif
-
-void signal_fault(struct pt_regs *regs, void __user *frame, char *where);
-
-enum {
- EF_CF = 0x00000001,
- EF_PF = 0x00000004,
- EF_AF = 0x00000010,
- EF_ZF = 0x00000040,
- EF_SF = 0x00000080,
- EF_TF = 0x00000100,
- EF_IE = 0x00000200,
- EF_DF = 0x00000400,
- EF_OF = 0x00000800,
- EF_IOPL = 0x00003000,
- EF_IOPL_RING0 = 0x00000000,
- EF_IOPL_RING1 = 0x00001000,
- EF_IOPL_RING2 = 0x00002000,
- EF_NT = 0x00004000, /* nested task */
- EF_RF = 0x00010000, /* resume */
- EF_VM = 0x00020000, /* virtual mode */
- EF_AC = 0x00040000, /* alignment */
- EF_VIF = 0x00080000, /* virtual interrupt */
- EF_VIP = 0x00100000, /* virtual interrupt pending */
- EF_ID = 0x00200000, /* id */
-};
-
-#endif
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/segment.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/segment.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,47 +0,0 @@
-#ifndef _ASM_SEGMENT_H
-#define _ASM_SEGMENT_H
-
-#include <asm/cache.h>
-
-#define __KERNEL_CS 0x10
-#define __KERNEL_DS 0x1b
-
-#define __KERNEL32_CS 0x3b
-
-/*
- * we cannot use the same code segment descriptor for user and kernel
- * -- not even in the long flat mode, because of different DPL /kkeil
- * The segment offset needs to contain a RPL. Grr. -AK
- * GDT layout to get 64bit syscall right (sysret hardcodes gdt offsets)
- */
-
-#define __USER32_CS 0x23 /* 4*8+3 */
-#define __USER_DS 0x2b /* 5*8+3 */
-#define __USER_CS 0x33 /* 6*8+3 */
-#define __USER32_DS __USER_DS
-#define __KERNEL16_CS (GDT_ENTRY_KERNELCS16 * 8)
-#define __KERNEL_COMPAT32_CS 0x8
-
-#define GDT_ENTRY_TLS 1
-#define GDT_ENTRY_TSS 8 /* needs two entries */
-#define GDT_ENTRY_LDT 10
-#define GDT_ENTRY_TLS_MIN 11
-#define GDT_ENTRY_TLS_MAX 13
-/* 14 free */
-#define GDT_ENTRY_KERNELCS16 15
-
-#define GDT_ENTRY_TLS_ENTRIES 3
-
-/* TLS indexes for 64bit - hardcoded in arch_prctl */
-#define FS_TLS 0
-#define GS_TLS 1
-
-#define GS_TLS_SEL ((GDT_ENTRY_TLS_MIN+GS_TLS)*8 + 3)
-#define FS_TLS_SEL ((GDT_ENTRY_TLS_MIN+FS_TLS)*8 + 3)
-
-#define IDT_ENTRIES 256
-#define GDT_ENTRIES 16
-#define GDT_SIZE (GDT_ENTRIES * 8)
-#define TLS_SIZE (GDT_ENTRY_TLS_ENTRIES * 8)
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/smp.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/smp.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,154 +0,0 @@
-#ifndef __ASM_SMP_H
-#define __ASM_SMP_H
-
-/*
- * We need the APIC definitions automatically as part of 'smp.h'
- */
-#ifndef __ASSEMBLY__
-#include <linux/config.h>
-#include <linux/threads.h>
-#include <linux/cpumask.h>
-#include <linux/bitops.h>
-extern int disable_apic;
-#endif
-
-#ifdef CONFIG_X86_LOCAL_APIC
-#ifndef __ASSEMBLY__
-#include <asm/fixmap.h>
-#include <asm/mpspec.h>
-#ifdef CONFIG_X86_IO_APIC
-#include <asm/io_apic.h>
-#endif
-#include <asm/apic.h>
-#include <asm/thread_info.h>
-#endif
-#endif
-
-#ifdef CONFIG_SMP
-#ifndef ASSEMBLY
-
-#include <asm/pda.h>
-
-struct pt_regs;
-
-/*
- * Private routines/data
- */
-
-extern void smp_alloc_memory(void);
-extern cpumask_t cpu_online_map;
-extern volatile unsigned long smp_invalidate_needed;
-extern int pic_mode;
-extern int smp_num_siblings;
-extern void smp_flush_tlb(void);
-extern void smp_message_irq(int cpl, void *dev_id, struct pt_regs *regs);
-extern void smp_send_reschedule(int cpu);
-extern void smp_invalidate_rcv(void); /* Process an NMI */
-extern void (*mtrr_hook) (void);
-extern void zap_low_mappings(void);
-void smp_stop_cpu(void);
-extern cpumask_t cpu_sibling_map[NR_CPUS];
-extern u8 phys_proc_id[NR_CPUS];
-
-#define SMP_TRAMPOLINE_BASE 0x6000
-
-/*
- * On x86 all CPUs are mapped 1:1 to the APIC space.
- * This simplifies scheduling and IPI sending and
- * compresses data structures.
- */
-
-extern cpumask_t cpu_callout_map;
-extern cpumask_t cpu_callin_map;
-#define cpu_possible_map cpu_callout_map
-
-static inline int num_booting_cpus(void)
-{
- return cpus_weight(cpu_callout_map);
-}
-
-#define __smp_processor_id() read_pda(cpunumber)
-
-#ifdef CONFIG_X86_LOCAL_APIC
-extern __inline int hard_smp_processor_id(void)
-{
- /* we don't want to mark this access volatile - bad code generation */
- return GET_APIC_ID(*(unsigned int *)(APIC_BASE+APIC_ID));
-}
-#endif
-
-#define safe_smp_processor_id() (disable_apic ? 0 :
x86_apicid_to_cpu(hard_smp_processor_id()))
-
-#endif /* !ASSEMBLY */
-
-#define NO_PROC_ID 0xFF /* No processor magic marker */
-
-#endif
-
-#ifndef ASSEMBLY
-/*
- * Some lowlevel functions might want to know about
- * the real APIC ID <-> CPU # mapping.
- */
-extern u8 x86_cpu_to_apicid[NR_CPUS]; /* physical ID */
-extern u8 x86_cpu_to_log_apicid[NR_CPUS];
-extern u8 bios_cpu_apicid[];
-#ifdef CONFIG_X86_LOCAL_APIC
-static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
-{
- return cpus_addr(cpumask)[0];
-}
-
-static inline int x86_apicid_to_cpu(u8 apicid)
-{
- int i;
-
- for (i = 0; i < NR_CPUS; ++i)
- if (x86_cpu_to_apicid[i] == apicid)
- return i;
-
- /* No entries in x86_cpu_to_apicid? Either no MPS|ACPI,
- * or called too early. Either way, we must be CPU 0. */
- if (x86_cpu_to_apicid[0] == BAD_APICID)
- return 0;
-
- return -1;
-}
-
-static inline int cpu_present_to_apicid(int mps_cpu)
-{
- if (mps_cpu < NR_CPUS)
- return (int)bios_cpu_apicid[mps_cpu];
- else
- return BAD_APICID;
-}
-#endif
-
-#endif /* !ASSEMBLY */
-
-#ifndef CONFIG_SMP
-#define stack_smp_processor_id() 0
-#define safe_smp_processor_id() 0
-#define cpu_logical_map(x) (x)
-#else
-#include <asm/thread_info.h>
-#define stack_smp_processor_id() \
-({ \
- struct thread_info *ti; \
- __asm__("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK)); \
- ti->cpu; \
-})
-#endif
-
-#ifndef __ASSEMBLY__
-#ifdef CONFIG_X86_LOCAL_APIC
-static __inline int logical_smp_processor_id(void)
-{
- /* we don't want to mark this access volatile - bad code generation */
- return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE+APIC_LDR));
-}
-#endif
-#endif
-
-#endif
-
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/system.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/system.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,403 +0,0 @@
-#ifndef __ASM_SYSTEM_H
-#define __ASM_SYSTEM_H
-
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <asm/segment.h>
-#include <asm-xen/synch_bitops.h>
-#include <asm-xen/hypervisor.h>
-#include <asm-xen/xen-public/arch-x86_64.h>
-
-#ifdef __KERNEL__
-
-#ifdef CONFIG_SMP
-#define LOCK_PREFIX "lock ; "
-#else
-#define LOCK_PREFIX ""
-#endif
-
-#define __STR(x) #x
-#define STR(x) __STR(x)
-
-#define __SAVE(reg,offset) "movq %%" #reg ",(14-" #offset ")*8(%%rsp)\n\t"
-#define __RESTORE(reg,offset) "movq (14-" #offset ")*8(%%rsp),%%" #reg "\n\t"
-
-/* frame pointer must be last for get_wchan */
-#define SAVE_CONTEXT "pushfq ; pushq %%rbp ; movq %%rsi,%%rbp\n\t"
-#define RESTORE_CONTEXT "movq %%rbp,%%rsi ; popq %%rbp ; popfq\n\t"
-
-#define __EXTRA_CLOBBER \
- ,"rcx","rbx","rdx","r8","r9","r10","r11","r12","r13","r14","r15"
-
-#define switch_to(prev,next,last) \
- asm volatile(SAVE_CONTEXT
\
- "movq %%rsp,%P[threadrsp](%[prev])\n\t" /* save RSP */
\
- "movq %P[threadrsp](%[next]),%%rsp\n\t" /* restore RSP */
\
- "call __switch_to\n\t"
\
- ".globl thread_return\n"
\
- "thread_return:\n\t"
\
- "movq %%gs:%P[pda_pcurrent],%%rsi\n\t"
\
- "movq %P[thread_info](%%rsi),%%r8\n\t"
\
- LOCK "btr %[tif_fork],%P[ti_flags](%%r8)\n\t"
\
- "movq %%rax,%%rdi\n\t"
\
- "jc ret_from_fork\n\t"
\
- RESTORE_CONTEXT
\
- : "=a" (last)
\
- : [next] "S" (next), [prev] "D" (prev),
\
- [threadrsp] "i" (offsetof(struct task_struct,
thread.rsp)), \
- [ti_flags] "i" (offsetof(struct thread_info, flags)),\
- [tif_fork] "i" (TIF_FORK), \
- [thread_info] "i" (offsetof(struct task_struct,
thread_info)), \
- [pda_pcurrent] "i" (offsetof(struct x8664_pda,
pcurrent)) \
- : "memory", "cc" __EXTRA_CLOBBER)
-
-
-extern void load_gs_index(unsigned);
-
-/*
- * Load a segment. Fall back on loading the zero
- * segment if something goes wrong..
- */
-#define loadsegment(seg,value) \
- asm volatile("\n" \
- "1:\t" \
- "movl %k0,%%" #seg "\n" \
- "2:\n" \
- ".section .fixup,\"ax\"\n" \
- "3:\t" \
- "movl %1,%%" #seg "\n\t" \
- "jmp 2b\n" \
- ".previous\n" \
- ".section __ex_table,\"a\"\n\t" \
- ".align 8\n\t" \
- ".quad 1b,3b\n" \
- ".previous" \
- : :"r" (value), "r" (0))
-
-#define set_debug(value,register) \
- __asm__("movq %0,%%db" #register \
- : /* no output */ \
- :"r" ((unsigned long) value))
-
-
-#ifdef __KERNEL__
-struct alt_instr {
- __u8 *instr; /* original instruction */
- __u8 *replacement;
- __u8 cpuid; /* cpuid bit set for replacement */
- __u8 instrlen; /* length of original instruction */
- __u8 replacementlen; /* length of new instruction, <= instrlen */
- __u8 pad[5];
-};
-#endif
-
-/*
- * Alternative instructions for different CPU types or capabilities.
- *
- * This allows to use optimized instructions even on generic binary
- * kernels.
- *
- * length of oldinstr must be longer or equal the length of newinstr
- * It can be padded with nops as needed.
- *
- * For non barrier like inlines please define new variants
- * without volatile and memory clobber.
- */
-#define alternative(oldinstr, newinstr, feature) \
- asm volatile ("661:\n\t" oldinstr "\n662:\n" \
- ".section .altinstructions,\"a\"\n" \
- " .align 8\n" \
- " .quad 661b\n" /* label */ \
- " .quad 663f\n" /* new instruction */ \
- " .byte %c0\n" /* feature bit */ \
- " .byte 662b-661b\n" /* sourcelen */ \
- " .byte 664f-663f\n" /* replacementlen */ \
- ".previous\n" \
- ".section .altinstr_replacement,\"ax\"\n" \
- "663:\n\t" newinstr "\n664:\n" /* replacement */ \
- ".previous" :: "i" (feature) : "memory")
-
-/*
- * Alternative inline assembly with input.
- *
- * Pecularities:
- * No memory clobber here.
- * Argument numbers start with 1.
- * Best is to use constraints that are fixed size (like (%1) ... "r")
- * If you use variable sized constraints like "m" or "g" in the
- * replacement maake sure to pad to the worst case length.
- */
-#define alternative_input(oldinstr, newinstr, feature, input...) \
- asm volatile ("661:\n\t" oldinstr "\n662:\n" \
- ".section .altinstructions,\"a\"\n" \
- " .align 8\n" \
- " .quad 661b\n" /* label */ \
- " .quad 663f\n" /* new instruction */ \
- " .byte %c0\n" /* feature bit */ \
- " .byte 662b-661b\n" /* sourcelen */ \
- " .byte 664f-663f\n" /* replacementlen */ \
- ".previous\n" \
- ".section .altinstr_replacement,\"ax\"\n" \
- "663:\n\t" newinstr "\n664:\n" /* replacement */ \
- ".previous" :: "i" (feature), ##input)
-
-/*
- * Clear and set 'TS' bit respectively
- */
-#define clts() (HYPERVISOR_fpu_taskswitch(0))
-
-static inline unsigned long read_cr0(void)
-{
- unsigned long cr0;
- asm volatile("movq %%cr0,%0" : "=r" (cr0));
- return cr0;
-}
-
-static inline void write_cr0(unsigned long val)
-{
- asm volatile("movq %0,%%cr0" :: "r" (val));
-}
-
-static inline unsigned long read_cr3(void)
-{
- unsigned long cr3;
- asm("movq %%cr3,%0" : "=r" (cr3));
- return cr3;
-}
-
-static inline unsigned long read_cr4(void)
-{
- unsigned long cr4;
- asm("movq %%cr4,%0" : "=r" (cr4));
- return cr4;
-}
-
-static inline void write_cr4(unsigned long val)
-{
- asm volatile("movq %0,%%cr4" :: "r" (val));
-}
-
-#define stts() (HYPERVISOR_fpu_taskswitch(1))
-
-#define wbinvd() \
- __asm__ __volatile__ ("wbinvd": : :"memory");
-
-#endif /* __KERNEL__ */
-
-#define nop() __asm__ __volatile__ ("nop")
-
-#define xchg(ptr,v) ((__typeof__(*(ptr)))__xchg((unsigned
long)(v),(ptr),sizeof(*(ptr))))
-
-#define tas(ptr) (xchg((ptr),1))
-
-#define __xg(x) ((volatile long *)(x))
-
-extern inline void set_64bit(volatile unsigned long *ptr, unsigned long val)
-{
- *ptr = val;
-}
-
-#define _set_64bit set_64bit
-
-/*
- * Note: no "lock" prefix even on SMP: xchg always implies lock anyway
- * Note 2: xchg has side effect, so that attribute volatile is necessary,
- * but generally the primitive is invalid, *ptr is output argument. --ANK
- */
-static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int
size)
-{
- switch (size) {
- case 1:
- __asm__ __volatile__("xchgb %b0,%1"
- :"=q" (x)
- :"m" (*__xg(ptr)), "0" (x)
- :"memory");
- break;
- case 2:
- __asm__ __volatile__("xchgw %w0,%1"
- :"=r" (x)
- :"m" (*__xg(ptr)), "0" (x)
- :"memory");
- break;
- case 4:
- __asm__ __volatile__("xchgl %k0,%1"
- :"=r" (x)
- :"m" (*__xg(ptr)), "0" (x)
- :"memory");
- break;
- case 8:
- __asm__ __volatile__("xchgq %0,%1"
- :"=r" (x)
- :"m" (*__xg(ptr)), "0" (x)
- :"memory");
- break;
- }
- return x;
-}
-
-/*
- * Atomic compare and exchange. Compare OLD with MEM, if identical,
- * store NEW in MEM. Return the initial value in MEM. Success is
- * indicated by comparing RETURN with OLD.
- */
-
-#define __HAVE_ARCH_CMPXCHG 1
-
-static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
- unsigned long new, int size)
-{
- unsigned long prev;
- switch (size) {
- case 1:
- __asm__ __volatile__(LOCK_PREFIX "cmpxchgb %b1,%2"
- : "=a"(prev)
- : "q"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- case 2:
- __asm__ __volatile__(LOCK_PREFIX "cmpxchgw %w1,%2"
- : "=a"(prev)
- : "q"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- case 4:
- __asm__ __volatile__(LOCK_PREFIX "cmpxchgl %k1,%2"
- : "=a"(prev)
- : "q"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- case 8:
- __asm__ __volatile__(LOCK_PREFIX "cmpxchgq %1,%2"
- : "=a"(prev)
- : "q"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- }
- return old;
-}
-
-#define cmpxchg(ptr,o,n)\
- ((__typeof__(*(ptr)))__cmpxchg((ptr),(unsigned long)(o),\
- (unsigned long)(n),sizeof(*(ptr))))
-
-#ifdef CONFIG_SMP
-#define smp_mb() mb()
-#define smp_rmb() rmb()
-#define smp_wmb() wmb()
-#define smp_read_barrier_depends() do {} while(0)
-#else
-#define smp_mb() barrier()
-#define smp_rmb() barrier()
-#define smp_wmb() barrier()
-#define smp_read_barrier_depends() do {} while(0)
-#endif
-
-
-/*
- * Force strict CPU ordering.
- * And yes, this is required on UP too when we're talking
- * to devices.
- */
-#define mb() asm volatile("mfence":::"memory")
-#define rmb() asm volatile("lfence":::"memory")
-
-#ifdef CONFIG_UNORDERED_IO
-#define wmb() asm volatile("sfence" ::: "memory")
-#else
-#define wmb() asm volatile("" ::: "memory")
-#endif
-#define read_barrier_depends() do {} while(0)
-#define set_mb(var, value) do { xchg(&var, value); } while (0)
-#define set_wmb(var, value) do { var = value; wmb(); } while (0)
-
-#define warn_if_not_ulong(x) do { unsigned long foo; (void) (&(x) == &foo); }
while (0)
-
-
-/*
- * The use of 'barrier' in the following reflects their use as local-lock
- * operations. Reentrancy must be prevented (e.g., __cli()) /before/ following
- * critical operations are executed. All critical operations must complete
- * /before/ reentrancy is permitted (e.g., __sti()). Alpha architecture also
- * includes these barriers, for example.
- */
-
-#define __cli()
\
-do { \
- vcpu_info_t *_vcpu; \
- preempt_disable(); \
- _vcpu = &HYPERVISOR_shared_info->vcpu_data[smp_processor_id()]; \
- _vcpu->evtchn_upcall_mask = 1; \
- preempt_enable_no_resched(); \
- barrier(); \
-} while (0)
-
-#define __sti()
\
-do { \
- vcpu_info_t *_vcpu; \
- barrier(); \
- preempt_disable(); \
- _vcpu = &HYPERVISOR_shared_info->vcpu_data[smp_processor_id()]; \
- _vcpu->evtchn_upcall_mask = 0; \
- barrier(); /* unmask then check (avoid races) */ \
- if ( unlikely(_vcpu->evtchn_upcall_pending) ) \
- force_evtchn_callback(); \
- preempt_enable(); \
-} while (0)
-
-#define __save_flags(x)
\
-do { \
- vcpu_info_t *_vcpu; \
- _vcpu = &HYPERVISOR_shared_info->vcpu_data[smp_processor_id()]; \
- (x) = _vcpu->evtchn_upcall_mask; \
-} while (0)
-
-#define __restore_flags(x) \
-do { \
- vcpu_info_t *_vcpu; \
- barrier(); \
- preempt_disable(); \
- _vcpu = &HYPERVISOR_shared_info->vcpu_data[smp_processor_id()]; \
- if ((_vcpu->evtchn_upcall_mask = (x)) == 0) { \
- barrier(); /* unmask then check (avoid races) */ \
- if ( unlikely(_vcpu->evtchn_upcall_pending) ) \
- force_evtchn_callback(); \
- preempt_enable(); \
- } else \
- preempt_enable_no_resched(); \
-} while (0)
-
-#define safe_halt() ((void)0)
-
-#define __save_and_cli(x) \
-do { \
- vcpu_info_t *_vcpu; \
- preempt_disable(); \
- _vcpu = &HYPERVISOR_shared_info->vcpu_data[smp_processor_id()]; \
- (x) = _vcpu->evtchn_upcall_mask; \
- _vcpu->evtchn_upcall_mask = 1; \
- preempt_enable_no_resched(); \
- barrier(); \
-} while (0)
-
-void cpu_idle_wait(void);
-
-#define local_irq_save(x) __save_and_cli(x)
-#define local_irq_restore(x) __restore_flags(x)
-#define local_save_flags(x) __save_flags(x)
-#define local_irq_disable() __cli()
-#define local_irq_enable() __sti()
-
-#define irqs_disabled() \
- HYPERVISOR_shared_info->vcpu_data[smp_processor_id()].evtchn_upcall_mask
-
-/*
- * disable hlt during certain critical i/o operations
- */
-#define HAVE_DISABLE_HLT
-void disable_hlt(void);
-void enable_hlt(void);
-
-#define HAVE_EAT_KEY
-void eat_key(void);
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/timer.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/timer.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,64 +0,0 @@
-#ifndef _ASMi386_TIMER_H
-#define _ASMi386_TIMER_H
-#include <linux/init.h>
-
-/**
- * struct timer_ops - used to define a timer source
- *
- * @name: name of the timer.
- * @init: Probes and initializes the timer. Takes clock= override
- * string as an argument. Returns 0 on success, anything else
- * on failure.
- * @mark_offset: called by the timer interrupt.
- * @get_offset: called by gettimeofday(). Returns the number of microseconds
- * since the last timer interupt.
- * @monotonic_clock: returns the number of nanoseconds since the init of the
- * timer.
- * @delay: delays this many clock cycles.
- */
-struct timer_opts {
- char* name;
- void (*mark_offset)(void);
- unsigned long (*get_offset)(void);
- unsigned long long (*monotonic_clock)(void);
- void (*delay)(unsigned long);
-};
-
-struct init_timer_opts {
- int (*init)(char *override);
- struct timer_opts *opts;
-};
-
-#define TICK_SIZE (tick_nsec / 1000)
-
-extern struct timer_opts* __init select_timer(void);
-extern void clock_fallback(void);
-void setup_pit_timer(void);
-
-/* Modifiers for buggy PIT handling */
-
-extern int pit_latch_buggy;
-
-extern struct timer_opts *cur_timer;
-extern int timer_ack;
-
-/* list of externed timers */
-extern struct timer_opts timer_none;
-extern struct timer_opts timer_pit;
-extern struct init_timer_opts timer_pit_init;
-extern struct init_timer_opts timer_tsc_init;
-#ifdef CONFIG_X86_CYCLONE_TIMER
-extern struct init_timer_opts timer_cyclone_init;
-#endif
-
-extern unsigned long calibrate_tsc(void);
-extern void init_cpu_khz(void);
-#ifdef CONFIG_HPET_TIMER
-extern struct init_timer_opts timer_hpet_init;
-extern unsigned long calibrate_tsc_hpet(unsigned long *tsc_hpet_quotient_ptr);
-#endif
-
-#ifdef CONFIG_X86_PM_TIMER
-extern struct init_timer_opts timer_pmtmr_init;
-#endif
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/tlbflush.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/tlbflush.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,97 +0,0 @@
-#ifndef _X8664_TLBFLUSH_H
-#define _X8664_TLBFLUSH_H
-
-#include <linux/config.h>
-#include <linux/mm.h>
-#include <asm/processor.h>
-
-#define __flush_tlb() xen_tlb_flush()
-
-/*
- * Global pages have to be flushed a bit differently. Not a real
- * performance problem because this does not happen often.
- */
-#define __flush_tlb_global() xen_tlb_flush()
-
-
-extern unsigned long pgkern_mask;
-
-#define __flush_tlb_all() __flush_tlb_global()
-
-#define __flush_tlb_one(addr) xen_invlpg(addr)
-
-
-/*
- * TLB flushing:
- *
- * - flush_tlb() flushes the current mm struct TLBs
- * - flush_tlb_all() flushes all processes TLBs
- * - flush_tlb_mm(mm) flushes the specified mm context TLB's
- * - flush_tlb_page(vma, vmaddr) flushes one page
- * - flush_tlb_range(vma, start, end) flushes a range of pages
- * - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
- * - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
- *
- * ..but the x86_64 has somewhat limited tlb flushing capabilities,
- * and page-granular flushes are available only on i486 and up.
- */
-
-#ifndef CONFIG_SMP
-
-#define flush_tlb() __flush_tlb()
-#define flush_tlb_all() __flush_tlb_all()
-#define local_flush_tlb() __flush_tlb()
-
-static inline void flush_tlb_mm(struct mm_struct *mm)
-{
- if (mm == current->active_mm)
- __flush_tlb();
-}
-
-static inline void flush_tlb_page(struct vm_area_struct *vma,
- unsigned long addr)
-{
- if (vma->vm_mm == current->active_mm)
- __flush_tlb_one(addr);
-}
-
-static inline void flush_tlb_range(struct vm_area_struct *vma,
- unsigned long start, unsigned long end)
-{
- if (vma->vm_mm == current->active_mm)
- __flush_tlb();
-}
-
-#else
-
-#include <asm/smp.h>
-
-#define local_flush_tlb() \
- __flush_tlb()
-
-extern void flush_tlb_all(void);
-extern void flush_tlb_current_task(void);
-extern void flush_tlb_mm(struct mm_struct *);
-extern void flush_tlb_page(struct vm_area_struct *, unsigned long);
-
-#define flush_tlb() flush_tlb_current_task()
-
-static inline void flush_tlb_range(struct vm_area_struct * vma, unsigned long
start, unsigned long end)
-{
- flush_tlb_mm(vma->vm_mm);
-}
-
-#define TLBSTATE_OK 1
-#define TLBSTATE_LAZY 2
-
-#endif
-
-#define flush_tlb_kernel_range(start, end) flush_tlb_all()
-
-static inline void flush_tlb_pgtables(struct mm_struct *mm,
- unsigned long start, unsigned long end)
-{
- /* x86_64 does not keep any page table caches in TLB */
-}
-
-#endif /* _X8664_TLBFLUSH_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/vga.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/vga.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,20 +0,0 @@
-/*
- * Access to VGA videoram
- *
- * (c) 1998 Martin Mares <mj@xxxxxx>
- */
-
-#ifndef _LINUX_ASM_VGA_H_
-#define _LINUX_ASM_VGA_H_
-
-/*
- * On the PC, we can just recalculate addresses and then
- * access the videoram directly without any black magic.
- */
-
-#define VGA_MAP_MEM(x) (unsigned long)isa_bus_to_virt(x)
-
-#define vga_readb(x) (*(x))
-#define vga_writeb(x,y) (*(y) = (x))
-
-#endif
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/xor.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/xor.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,328 +0,0 @@
-/*
- * x86-64 changes / gcc fixes from Andi Kleen.
- * Copyright 2002 Andi Kleen, SuSE Labs.
- *
- * This hasn't been optimized for the hammer yet, but there are likely
- * no advantages to be gotten from x86-64 here anyways.
- */
-
-typedef struct { unsigned long a,b; } __attribute__((aligned(16))) xmm_store_t;
-
-/* Doesn't use gcc to save the XMM registers, because there is no easy way to
- tell it to do a clts before the register saving. */
-#define XMMS_SAVE do { \
- preempt_disable(); \
- if (!(current_thread_info()->status & TS_USEDFPU)) \
- clts(); \
- __asm__ __volatile__ ( \
- "movups %%xmm0,(%1) ;\n\t" \
- "movups %%xmm1,0x10(%1) ;\n\t" \
- "movups %%xmm2,0x20(%1) ;\n\t" \
- "movups %%xmm3,0x30(%1) ;\n\t" \
- : "=&r" (cr0) \
- : "r" (xmm_save) \
- : "memory"); \
-} while(0)
-
-#define XMMS_RESTORE do { \
- asm volatile ( \
- "sfence ;\n\t" \
- "movups (%1),%%xmm0 ;\n\t" \
- "movups 0x10(%1),%%xmm1 ;\n\t" \
- "movups 0x20(%1),%%xmm2 ;\n\t" \
- "movups 0x30(%1),%%xmm3 ;\n\t" \
- : \
- : "r" (cr0), "r" (xmm_save) \
- : "memory"); \
- if (!(current_thread_info()->status & TS_USEDFPU)) \
- stts(); \
- preempt_enable(); \
-} while(0)
-
-#define OFFS(x) "16*("#x")"
-#define PF_OFFS(x) "256+16*("#x")"
-#define PF0(x) " prefetchnta "PF_OFFS(x)"(%[p1])
;\n"
-#define LD(x,y) " movaps "OFFS(x)"(%[p1]), %%xmm"#y"
;\n"
-#define ST(x,y) " movaps %%xmm"#y", "OFFS(x)"(%[p1])
;\n"
-#define PF1(x) " prefetchnta "PF_OFFS(x)"(%[p2]) ;\n"
-#define PF2(x) " prefetchnta "PF_OFFS(x)"(%[p3]) ;\n"
-#define PF3(x) " prefetchnta "PF_OFFS(x)"(%[p4]) ;\n"
-#define PF4(x) " prefetchnta "PF_OFFS(x)"(%[p5]) ;\n"
-#define PF5(x) " prefetchnta "PF_OFFS(x)"(%[p6]) ;\n"
-#define XO1(x,y) " xorps "OFFS(x)"(%[p2]), %%xmm"#y" ;\n"
-#define XO2(x,y) " xorps "OFFS(x)"(%[p3]), %%xmm"#y" ;\n"
-#define XO3(x,y) " xorps "OFFS(x)"(%[p4]), %%xmm"#y" ;\n"
-#define XO4(x,y) " xorps "OFFS(x)"(%[p5]), %%xmm"#y" ;\n"
-#define XO5(x,y) " xorps "OFFS(x)"(%[p6]), %%xmm"#y" ;\n"
-
-
-static void
-xor_sse_2(unsigned long bytes, unsigned long *p1, unsigned long *p2)
-{
- unsigned int lines = bytes >> 8;
- unsigned long cr0;
- xmm_store_t xmm_save[4];
-
- XMMS_SAVE;
-
- asm volatile (
-#undef BLOCK
-#define BLOCK(i) \
- LD(i,0) \
- LD(i+1,1) \
- PF1(i) \
- PF1(i+2) \
- LD(i+2,2) \
- LD(i+3,3) \
- PF0(i+4) \
- PF0(i+6) \
- XO1(i,0) \
- XO1(i+1,1) \
- XO1(i+2,2) \
- XO1(i+3,3) \
- ST(i,0) \
- ST(i+1,1) \
- ST(i+2,2) \
- ST(i+3,3) \
-
-
- PF0(0)
- PF0(2)
-
- " .align 32 ;\n"
- " 1: ;\n"
-
- BLOCK(0)
- BLOCK(4)
- BLOCK(8)
- BLOCK(12)
-
- " addq %[inc], %[p1] ;\n"
- " addq %[inc], %[p2] ;\n"
- " decl %[cnt] ; jnz 1b"
- : [p1] "+r" (p1), [p2] "+r" (p2), [cnt] "+r" (lines)
- : [inc] "r" (256UL)
- : "memory");
-
- XMMS_RESTORE;
-}
-
-static void
-xor_sse_3(unsigned long bytes, unsigned long *p1, unsigned long *p2,
- unsigned long *p3)
-{
- unsigned int lines = bytes >> 8;
- xmm_store_t xmm_save[4];
- unsigned long cr0;
-
- XMMS_SAVE;
-
- __asm__ __volatile__ (
-#undef BLOCK
-#define BLOCK(i) \
- PF1(i) \
- PF1(i+2) \
- LD(i,0) \
- LD(i+1,1) \
- LD(i+2,2) \
- LD(i+3,3) \
- PF2(i) \
- PF2(i+2) \
- PF0(i+4) \
- PF0(i+6) \
- XO1(i,0) \
- XO1(i+1,1) \
- XO1(i+2,2) \
- XO1(i+3,3) \
- XO2(i,0) \
- XO2(i+1,1) \
- XO2(i+2,2) \
- XO2(i+3,3) \
- ST(i,0) \
- ST(i+1,1) \
- ST(i+2,2) \
- ST(i+3,3) \
-
-
- PF0(0)
- PF0(2)
-
- " .align 32 ;\n"
- " 1: ;\n"
-
- BLOCK(0)
- BLOCK(4)
- BLOCK(8)
- BLOCK(12)
-
- " addq %[inc], %[p1] ;\n"
- " addq %[inc], %[p2] ;\n"
- " addq %[inc], %[p3] ;\n"
- " decl %[cnt] ; jnz 1b"
- : [cnt] "+r" (lines),
- [p1] "+r" (p1), [p2] "+r" (p2), [p3] "+r" (p3)
- : [inc] "r" (256UL)
- : "memory");
- XMMS_RESTORE;
-}
-
-static void
-xor_sse_4(unsigned long bytes, unsigned long *p1, unsigned long *p2,
- unsigned long *p3, unsigned long *p4)
-{
- unsigned int lines = bytes >> 8;
- xmm_store_t xmm_save[4];
- unsigned long cr0;
-
- XMMS_SAVE;
-
- __asm__ __volatile__ (
-#undef BLOCK
-#define BLOCK(i) \
- PF1(i) \
- PF1(i+2) \
- LD(i,0) \
- LD(i+1,1) \
- LD(i+2,2) \
- LD(i+3,3) \
- PF2(i) \
- PF2(i+2) \
- XO1(i,0) \
- XO1(i+1,1) \
- XO1(i+2,2) \
- XO1(i+3,3) \
- PF3(i) \
- PF3(i+2) \
- PF0(i+4) \
- PF0(i+6) \
- XO2(i,0) \
- XO2(i+1,1) \
- XO2(i+2,2) \
- XO2(i+3,3) \
- XO3(i,0) \
- XO3(i+1,1) \
- XO3(i+2,2) \
- XO3(i+3,3) \
- ST(i,0) \
- ST(i+1,1) \
- ST(i+2,2) \
- ST(i+3,3) \
-
-
- PF0(0)
- PF0(2)
-
- " .align 32 ;\n"
- " 1: ;\n"
-
- BLOCK(0)
- BLOCK(4)
- BLOCK(8)
- BLOCK(12)
-
- " addq %[inc], %[p1] ;\n"
- " addq %[inc], %[p2] ;\n"
- " addq %[inc], %[p3] ;\n"
- " addq %[inc], %[p4] ;\n"
- " decl %[cnt] ; jnz 1b"
- : [cnt] "+c" (lines),
- [p1] "+r" (p1), [p2] "+r" (p2), [p3] "+r" (p3), [p4] "+r" (p4)
- : [inc] "r" (256UL)
- : "memory" );
-
- XMMS_RESTORE;
-}
-
-static void
-xor_sse_5(unsigned long bytes, unsigned long *p1, unsigned long *p2,
- unsigned long *p3, unsigned long *p4, unsigned long *p5)
-{
- unsigned int lines = bytes >> 8;
- xmm_store_t xmm_save[4];
- unsigned long cr0;
-
- XMMS_SAVE;
-
- __asm__ __volatile__ (
-#undef BLOCK
-#define BLOCK(i) \
- PF1(i) \
- PF1(i+2) \
- LD(i,0) \
- LD(i+1,1) \
- LD(i+2,2) \
- LD(i+3,3) \
- PF2(i) \
- PF2(i+2) \
- XO1(i,0) \
- XO1(i+1,1) \
- XO1(i+2,2) \
- XO1(i+3,3) \
- PF3(i) \
- PF3(i+2) \
- XO2(i,0) \
- XO2(i+1,1) \
- XO2(i+2,2) \
- XO2(i+3,3) \
- PF4(i) \
- PF4(i+2) \
- PF0(i+4) \
- PF0(i+6) \
- XO3(i,0) \
- XO3(i+1,1) \
- XO3(i+2,2) \
- XO3(i+3,3) \
- XO4(i,0) \
- XO4(i+1,1) \
- XO4(i+2,2) \
- XO4(i+3,3) \
- ST(i,0) \
- ST(i+1,1) \
- ST(i+2,2) \
- ST(i+3,3) \
-
-
- PF0(0)
- PF0(2)
-
- " .align 32 ;\n"
- " 1: ;\n"
-
- BLOCK(0)
- BLOCK(4)
- BLOCK(8)
- BLOCK(12)
-
- " addq %[inc], %[p1] ;\n"
- " addq %[inc], %[p2] ;\n"
- " addq %[inc], %[p3] ;\n"
- " addq %[inc], %[p4] ;\n"
- " addq %[inc], %[p5] ;\n"
- " decl %[cnt] ; jnz 1b"
- : [cnt] "+c" (lines),
- [p1] "+r" (p1), [p2] "+r" (p2), [p3] "+r" (p3), [p4] "+r" (p4),
- [p5] "+r" (p5)
- : [inc] "r" (256UL)
- : "memory");
-
- XMMS_RESTORE;
-}
-
-static struct xor_block_template xor_block_sse = {
- .name = "generic_sse",
- .do_2 = xor_sse_2,
- .do_3 = xor_sse_3,
- .do_4 = xor_sse_4,
- .do_5 = xor_sse_5,
-};
-
-#undef XOR_TRY_TEMPLATES
-#define XOR_TRY_TEMPLATES \
- do { \
- xor_speed(&xor_block_sse); \
- } while (0)
-
-/* We force the use of the SSE xor block because it can write around L2.
- We may also be able to load into the L1 only depending on how the cpu
- deals with a load to a line that is being prefetched. */
-#define XOR_SELECT_TEMPLATE(FASTEST) (&xor_block_sse)
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/balloon.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/balloon.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,51 +0,0 @@
-/******************************************************************************
- * balloon.h
- *
- * Xen balloon driver - enables returning/claiming memory to/from Xen.
- *
- * Copyright (c) 2003, B Dragovic
- * Copyright (c) 2003-2004, M Williamson, K Fraser
- *
- * This file may be distributed separately from the Linux kernel, or
- * incorporated into other software packages, subject to the following license:
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this source file (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use, copy, modify,
- * merge, publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-#ifndef __ASM_BALLOON_H__
-#define __ASM_BALLOON_H__
-
-/*
- * Inform the balloon driver that it should allow some slop for device-driver
- * memory activities.
- */
-extern void balloon_update_driver_allowance(long delta);
-
-/* Give up unmapped pages to the balloon driver. */
-extern void balloon_put_pages(unsigned long *mfn_list, unsigned long nr_mfns);
-
-/*
- * Prevent the balloon driver from changing the memory reservation during
- * a driver critical region.
- */
-extern spinlock_t balloon_lock;
-#define balloon_lock(__flags) spin_lock_irqsave(&balloon_lock, __flags)
-#define balloon_unlock(__flags) spin_unlock_irqrestore(&balloon_lock, __flags)
-
-#endif /* __ASM_BALLOON_H__ */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/ctrl_if.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/ctrl_if.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,160 +0,0 @@
-/******************************************************************************
- * ctrl_if.h
- *
- * Management functions for special interface to the domain controller.
- *
- * Copyright (c) 2004, K A Fraser
- *
- * This file may be distributed separately from the Linux kernel, or
- * incorporated into other software packages, subject to the following license:
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this source file (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use, copy, modify,
- * merge, publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-#ifndef __ASM_XEN__CTRL_IF_H__
-#define __ASM_XEN__CTRL_IF_H__
-
-#include <asm-xen/hypervisor.h>
-#include <asm-xen/queues.h>
-
-typedef control_msg_t ctrl_msg_t;
-
-/*
- * Callback function type. Called for asynchronous processing of received
- * request messages, and responses to previously-transmitted request messages.
- * The parameters are (@msg, @id).
- * @msg: Original request/response message (not a copy). The message can be
- * modified in-place by the handler (e.g., a response callback can
- * turn a request message into a response message in place). The message
- * is no longer accessible after the callback handler returns -- if the
- * message is required to persist for longer then it must be copied.
- * @id: (Response callbacks only) The 'id' that was specified when the
- * original request message was queued for transmission.
- */
-typedef void (*ctrl_msg_handler_t)(ctrl_msg_t *, unsigned long);
-
-/*
- * Send @msg to the domain controller. Execute @hnd when a response is
- * received, passing the response message and the specified @id. This
- * operation will not block: it will return -EAGAIN if there is no space.
- * Notes:
- * 1. The @msg is copied if it is transmitted and so can be freed after this
- * function returns.
- * 2. If @hnd is NULL then no callback is executed.
- */
-int
-ctrl_if_send_message_noblock(
- ctrl_msg_t *msg,
- ctrl_msg_handler_t hnd,
- unsigned long id);
-
-/*
- * Send @msg to the domain controller. Execute @hnd when a response is
- * received, passing the response message and the specified @id. This
- * operation will block until the message is sent, or a signal is received
- * for the calling process (unless @wait_state is TASK_UNINTERRUPTIBLE).
- * Notes:
- * 1. The @msg is copied if it is transmitted and so can be freed after this
- * function returns.
- * 2. If @hnd is NULL then no callback is executed.
- */
-int
-ctrl_if_send_message_block(
- ctrl_msg_t *msg,
- ctrl_msg_handler_t hnd,
- unsigned long id,
- long wait_state);
-
-/*
- * Send @msg to the domain controller. Block until the response is received,
- * and then copy it into the provided buffer, @rmsg.
- */
-int
-ctrl_if_send_message_and_get_response(
- ctrl_msg_t *msg,
- ctrl_msg_t *rmsg,
- long wait_state);
-
-/*
- * Request a callback when there is /possibly/ space to immediately send a
- * message to the domain controller. This function returns 0 if there is
- * already space to trasnmit a message --- in this case the callback task /may/
- * still be executed. If this function returns 1 then the callback /will/ be
- * executed when space becomes available.
- */
-int
-ctrl_if_enqueue_space_callback(
- struct tq_struct *task);
-
-/*
- * Send a response (@msg) to a message from the domain controller. This will
- * never block.
- * Notes:
- * 1. The @msg is copied and so can be freed after this function returns.
- * 2. The @msg may be the original request message, modified in-place.
- */
-void
-ctrl_if_send_response(
- ctrl_msg_t *msg);
-
-/*
- * Register a receiver for typed messages from the domain controller. The
- * handler (@hnd) is called for every received message of specified @type.
- * Returns TRUE (non-zero) if the handler was successfully registered.
- * If CALLBACK_IN_BLOCKING CONTEXT is specified in @flags then callbacks will
- * occur in a context in which it is safe to yield (i.e., process context).
- */
-#define CALLBACK_IN_BLOCKING_CONTEXT 1
-int ctrl_if_register_receiver(
- u8 type,
- ctrl_msg_handler_t hnd,
- unsigned int flags);
-
-/*
- * Unregister a receiver for typed messages from the domain controller. The
- * handler (@hnd) will not be executed after this function returns.
- */
-void
-ctrl_if_unregister_receiver(
- u8 type, ctrl_msg_handler_t hnd);
-
-/* Suspend/resume notifications. */
-void ctrl_if_suspend(void);
-void ctrl_if_resume(void);
-
-/* Start-of-day setup. */
-void ctrl_if_init(void);
-
-/*
- * Returns TRUE if there are no outstanding message requests at the domain
- * controller. This can be used to ensure that messages have really flushed
- * through when it is not possible to use the response-callback interface.
- * WARNING: If other subsystems are using the control interface then this
- * function might never return TRUE!
- */
-int ctrl_if_transmitter_empty(void); /* !! DANGEROUS FUNCTION !! */
-
-/*
- * Manually discard response messages from the domain controller.
- * WARNING: This is usually done automatically -- this function should only
- * be called when normal interrupt mechanisms are disabled!
- */
-void ctrl_if_discard_responses(void); /* !! DANGEROUS FUNCTION !! */
-
-#endif /* __ASM_XEN__CONTROL_IF_H__ */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/evtchn.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/evtchn.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,106 +0,0 @@
-/******************************************************************************
- * evtchn.h
- *
- * Communication via Xen event channels.
- * Also definitions for the device that demuxes notifications to userspace.
- *
- * Copyright (c) 2004, K A Fraser
- *
- * This file may be distributed separately from the Linux kernel, or
- * incorporated into other software packages, subject to the following license:
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this source file (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use, copy, modify,
- * merge, publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-#ifndef __ASM_EVTCHN_H__
-#define __ASM_EVTCHN_H__
-
-#include <linux/config.h>
-#include <asm-xen/hypervisor.h>
-#include <asm/ptrace.h>
-#include <asm-xen/synch_bitops.h>
-#include <asm-xen/xen-public/event_channel.h>
-#include <linux/smp.h>
-
-/*
- * LOW-LEVEL DEFINITIONS
- */
-
-/* Entry point for notifications into Linux subsystems. */
-asmlinkage void evtchn_do_upcall(struct pt_regs *regs);
-
-/* Entry point for notifications into the userland character device. */
-void evtchn_device_upcall(int port);
-
-static inline void mask_evtchn(int port)
-{
- shared_info_t *s = HYPERVISOR_shared_info;
- synch_set_bit(port, &s->evtchn_mask[0]);
-}
-
-static inline void unmask_evtchn(int port)
-{
- shared_info_t *s = HYPERVISOR_shared_info;
- vcpu_info_t *vcpu_info = &s->vcpu_data[smp_processor_id()];
-
- synch_clear_bit(port, &s->evtchn_mask[0]);
-
- /*
- * The following is basically the equivalent of 'hw_resend_irq'. Just like
- * a real IO-APIC we 'lose the interrupt edge' if the channel is masked.
- */
- if ( synch_test_bit (port, &s->evtchn_pending[0]) &&
- !synch_test_and_set_bit(port>>5, &vcpu_info->evtchn_pending_sel) )
- {
- vcpu_info->evtchn_upcall_pending = 1;
- if ( !vcpu_info->evtchn_upcall_mask )
- force_evtchn_callback();
- }
-}
-
-static inline void clear_evtchn(int port)
-{
- shared_info_t *s = HYPERVISOR_shared_info;
- synch_clear_bit(port, &s->evtchn_pending[0]);
-}
-
-static inline int notify_via_evtchn(int port)
-{
- evtchn_op_t op;
- op.cmd = EVTCHNOP_send;
- op.u.send.local_port = port;
- return HYPERVISOR_event_channel_op(&op);
-}
-
-/*
- * CHARACTER-DEVICE DEFINITIONS
- */
-
-/* /dev/xen/evtchn resides at device number major=10, minor=201 */
-#define EVTCHN_MINOR 201
-
-/* /dev/xen/evtchn ioctls: */
-/* EVTCHN_RESET: Clear and reinit the event buffer. Clear error condition. */
-#define EVTCHN_RESET _IO('E', 1)
-/* EVTCHN_BIND: Bind to teh specified event-channel port. */
-#define EVTCHN_BIND _IO('E', 2)
-/* EVTCHN_UNBIND: Unbind from the specified event-channel port. */
-#define EVTCHN_UNBIND _IO('E', 3)
-
-#endif /* __ASM_EVTCHN_H__ */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/foreign_page.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/foreign_page.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,30 +0,0 @@
-/******************************************************************************
- * foreign_page.h
- *
- * Provide a "foreign" page type, that is owned by a foreign allocator and
- * not the normal buddy allocator in page_alloc.c
- *
- * Copyright (c) 2004, K A Fraser
- */
-
-#ifndef __ASM_XEN_FOREIGN_PAGE_H__
-#define __ASM_XEN_FOREIGN_PAGE_H__
-
-#define PG_foreign PG_arch_1
-
-#define PageForeign(page) test_bit(PG_foreign, &(page)->flags)
-
-#define SetPageForeign(page, dtor) do { \
- set_bit(PG_foreign, &(page)->flags); \
- (page)->mapping = (void *)dtor; \
-} while (0)
-
-#define ClearPageForeign(page) do { \
- clear_bit(PG_foreign, &(page)->flags); \
- (page)->mapping = NULL; \
-} while (0)
-
-#define PageForeignDestructor(page) \
- ( (void (*) (struct page *)) (page)->mapping )
-
-#endif /* __ASM_XEN_FOREIGN_PAGE_H__ */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/gnttab.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/gnttab.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,72 +0,0 @@
-/******************************************************************************
- * gnttab.h
- *
- * Two sets of functionality:
- * 1. Granting foreign access to our memory reservation.
- * 2. Accessing others' memory reservations via grant references.
- * (i.e., mechanisms for both sender and recipient of grant references)
- *
- * Copyright (c) 2004, K A Fraser
- * Copyright (c) 2005, Christopher Clark
- */
-
-#ifndef __ASM_GNTTAB_H__
-#define __ASM_GNTTAB_H__
-
-#include <linux/config.h>
-#include <asm-xen/hypervisor.h>
-#include <asm-xen/xen-public/grant_table.h>
-
-/* NR_GRANT_FRAMES must be less than or equal to that configured in Xen */
-#define NR_GRANT_FRAMES 4
-#define NR_GRANT_ENTRIES (NR_GRANT_FRAMES * PAGE_SIZE / sizeof(grant_entry_t))
-
-int
-gnttab_grant_foreign_access(
- domid_t domid, unsigned long frame, int readonly);
-
-void
-gnttab_end_foreign_access(
- grant_ref_t ref, int readonly);
-
-int
-gnttab_grant_foreign_transfer(
- domid_t domid, unsigned long pfn);
-
-unsigned long
-gnttab_end_foreign_transfer(
- grant_ref_t ref);
-
-int
-gnttab_query_foreign_access(
- grant_ref_t ref );
-
-/*
- * operations on reserved batches of grant references
- */
-int
-gnttab_alloc_grant_references(
- u16 count, grant_ref_t *pprivate_head, grant_ref_t *private_terminal );
-
-void
-gnttab_free_grant_references(
- u16 count, grant_ref_t private_head );
-
-int
-gnttab_claim_grant_reference( grant_ref_t *pprivate_head, grant_ref_t terminal
-);
-
-void
-gnttab_release_grant_reference(
- grant_ref_t *private_head, grant_ref_t release );
-
-void
-gnttab_grant_foreign_access_ref(
- grant_ref_t ref, domid_t domid, unsigned long frame, int readonly);
-
-void
-gnttab_grant_foreign_transfer_ref(
- grant_ref_t, domid_t domid, unsigned long pfn);
-
-
-#endif /* __ASM_GNTTAB_H__ */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/hypervisor.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/hypervisor.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,187 +0,0 @@
-/******************************************************************************
- * hypervisor.h
- *
- * Linux-specific hypervisor handling.
- *
- * Copyright (c) 2002-2004, K A Fraser
- *
- * This file may be distributed separately from the Linux kernel, or
- * incorporated into other software packages, subject to the following license:
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this source file (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use, copy, modify,
- * merge, publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-#ifndef __HYPERVISOR_H__
-#define __HYPERVISOR_H__
-
-#include <linux/config.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/version.h>
-#include <asm-xen/xen-public/xen.h>
-#include <asm-xen/xen-public/dom0_ops.h>
-#include <asm-xen/xen-public/io/domain_controller.h>
-#include <asm/ptrace.h>
-#include <asm/page.h>
-#if defined(__i386__)
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-#include <asm-generic/pgtable-nopmd.h>
-#endif
-#endif
-
-/* arch/xen/i386/kernel/setup.c */
-union xen_start_info_union
-{
- start_info_t xen_start_info;
- char padding[2048];
-};
-extern union xen_start_info_union xen_start_info_union;
-#define xen_start_info (xen_start_info_union.xen_start_info)
-
-/* arch/xen/kernel/evtchn.c */
-/* Force a proper event-channel callback from Xen. */
-void force_evtchn_callback(void);
-
-/* arch/xen/kernel/process.c */
-void xen_cpu_idle (void);
-
-/* arch/xen/i386/kernel/hypervisor.c */
-void do_hypervisor_callback(struct pt_regs *regs);
-
-/* arch/xen/i386/kernel/head.S */
-void lgdt_finish(void);
-
-/* arch/xen/i386/mm/hypervisor.c */
-/*
- * NB. ptr values should be PHYSICAL, not MACHINE. 'vals' should be already
- * be MACHINE addresses.
- */
-
-void xen_pt_switch(unsigned long ptr);
-void xen_new_user_pt(unsigned long ptr); /* x86_64 only */
-void xen_load_gs(unsigned int selector); /* x86_64 only */
-void xen_tlb_flush(void);
-void xen_invlpg(unsigned long ptr);
-
-#ifndef CONFIG_XEN_SHADOW_MODE
-void xen_l1_entry_update(pte_t *ptr, unsigned long val);
-void xen_l2_entry_update(pmd_t *ptr, pmd_t val);
-#ifdef __x86_64__
-void xen_l3_entry_update(pud_t *ptr, pud_t val); /* x86_64 only */
-#endif
-void xen_l4_entry_update(pgd_t *ptr, pgd_t val); /* x86_64 only */
-void xen_pgd_pin(unsigned long ptr);
-void xen_pgd_unpin(unsigned long ptr);
-void xen_pud_pin(unsigned long ptr); /* x86_64 only */
-void xen_pud_unpin(unsigned long ptr); /* x86_64 only */
-void xen_pmd_pin(unsigned long ptr); /* x86_64 only */
-void xen_pmd_unpin(unsigned long ptr); /* x86_64 only */
-void xen_pte_pin(unsigned long ptr);
-void xen_pte_unpin(unsigned long ptr);
-#else
-#define xen_l1_entry_update(_p, _v) set_pte((_p), (pte_t){(_v)})
-#define xen_l2_entry_update(_p, _v) set_pgd((_p), (pgd_t){(_v)})
-#define xen_pgd_pin(_p) ((void)0)
-#define xen_pgd_unpin(_p) ((void)0)
-#define xen_pte_pin(_p) ((void)0)
-#define xen_pte_unpin(_p) ((void)0)
-#endif
-
-void xen_set_ldt(unsigned long ptr, unsigned long bytes);
-void xen_machphys_update(unsigned long mfn, unsigned long pfn);
-
-#ifdef CONFIG_SMP
-#include <linux/cpumask.h>
-void xen_tlb_flush_all(void);
-void xen_invlpg_all(unsigned long ptr);
-void xen_tlb_flush_mask(cpumask_t *mask);
-void xen_invlpg_mask(cpumask_t *mask, unsigned long ptr);
-#endif
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
-/*
-** XXX SMH: 2.4 doesn't have percpu.h (or support SMP guests) so just
-** include sufficient #defines to allow the below to build.
-*/
-#define DEFINE_PER_CPU(type, name) \
- __typeof__(type) per_cpu__##name
-
-#define per_cpu(var, cpu) (*((void)cpu, &per_cpu__##var))
-#define __get_cpu_var(var) per_cpu__##var
-#define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu__##name
-
-#define EXPORT_PER_CPU_SYMBOL(var) EXPORT_SYMBOL(per_cpu__##var)
-#define EXPORT_PER_CPU_SYMBOL_GPL(var) EXPORT_SYMBOL_GPL(per_cpu__##var)
-#endif /* linux < 2.6.0 */
-
-void xen_contig_memory(unsigned long vstart, unsigned int order);
-
-#ifdef CONFIG_XEN_PHYSDEV_ACCESS
-/* Allocate a contiguous empty region of low memory. Return virtual start. */
-unsigned long allocate_empty_lowmem_region(unsigned long pages);
-#endif
-
-#include <asm/hypercall.h>
-
-static inline void
-MULTI_update_va_mapping(
- multicall_entry_t *mcl, unsigned long va,
- pte_t new_val, unsigned long flags)
-{
- mcl->op = __HYPERVISOR_update_va_mapping;
- mcl->args[0] = va;
-#if defined(CONFIG_X86_64)
- mcl->args[1] = new_val.pte;
- mcl->args[2] = flags;
-#elif defined(CONFIG_X86_PAE)
- mcl->args[1] = new_val.pte_low;
- mcl->args[2] = new_val.pte_high;
- mcl->args[3] = flags;
-#else
- mcl->args[1] = new_val.pte_low;
- mcl->args[2] = 0;
- mcl->args[3] = flags;
-#endif
-}
-
-static inline void
-MULTI_update_va_mapping_otherdomain(
- multicall_entry_t *mcl, unsigned long va,
- pte_t new_val, unsigned long flags, domid_t domid)
-{
- mcl->op = __HYPERVISOR_update_va_mapping_otherdomain;
- mcl->args[0] = va;
-#if defined(CONFIG_X86_64)
- mcl->args[1] = new_val.pte;
- mcl->args[2] = flags;
- mcl->args[3] = domid;
-#elif defined(CONFIG_X86_PAE)
- mcl->args[1] = new_val.pte_low;
- mcl->args[2] = new_val.pte_high;
- mcl->args[3] = flags;
- mcl->args[4] = domid;
-#else
- mcl->args[1] = new_val.pte_low;
- mcl->args[2] = 0;
- mcl->args[3] = flags;
- mcl->args[4] = domid;
-#endif
-}
-
-#endif /* __HYPERVISOR_H__ */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/linux-public/privcmd.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/linux-public/privcmd.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,90 +0,0 @@
-/******************************************************************************
- * privcmd.h
- *
- * Interface to /proc/xen/privcmd.
- *
- * Copyright (c) 2003-2004, K A Fraser
- *
- * This file may be distributed separately from the Linux kernel, or
- * incorporated into other software packages, subject to the following license:
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this source file (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use, copy, modify,
- * merge, publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-#ifndef __PRIVCMD_H__
-#define __PRIVCMD_H__
-
-typedef struct privcmd_hypercall
-{
- unsigned long op;
- unsigned long arg[5];
-} privcmd_hypercall_t;
-
-typedef struct privcmd_mmap_entry {
- unsigned long va;
- unsigned long mfn;
- unsigned long npages;
-} privcmd_mmap_entry_t;
-
-typedef struct privcmd_mmap {
- int num;
- domid_t dom; /* target domain */
- privcmd_mmap_entry_t *entry;
-} privcmd_mmap_t;
-
-typedef struct privcmd_mmapbatch {
- int num; /* number of pages to populate */
- domid_t dom; /* target domain */
- unsigned long addr; /* virtual address */
- unsigned long *arr; /* array of mfns - top nibble set on err */
-} privcmd_mmapbatch_t;
-
-typedef struct privcmd_blkmsg
-{
- unsigned long op;
- void *buf;
- int buf_size;
-} privcmd_blkmsg_t;
-
-/*
- * @cmd: IOCTL_PRIVCMD_HYPERCALL
- * @arg: &privcmd_hypercall_t
- * Return: Value returned from execution of the specified hypercall.
- */
-#define IOCTL_PRIVCMD_HYPERCALL \
- _IOC(_IOC_NONE, 'P', 0, sizeof(privcmd_hypercall_t))
-
-/*
- * @cmd: IOCTL_PRIVCMD_INITDOMAIN_EVTCHN
- * @arg: n/a
- * Return: Port associated with domain-controller end of control event channel
- * for the initial domain.
- */
-#define IOCTL_PRIVCMD_INITDOMAIN_EVTCHN \
- _IOC(_IOC_NONE, 'P', 1, 0)
-#define IOCTL_PRIVCMD_MMAP \
- _IOC(_IOC_NONE, 'P', 2, sizeof(privcmd_mmap_t))
-#define IOCTL_PRIVCMD_MMAPBATCH \
- _IOC(_IOC_NONE, 'P', 3, sizeof(privcmd_mmapbatch_t))
-#define IOCTL_PRIVCMD_GET_MACH2PHYS_START_MFN \
- _IOC(_IOC_READ, 'P', 4, sizeof(unsigned long))
-#define IOCTL_PRIVCMD_INITDOMAIN_STORE \
- _IOC(_IOC_READ, 'P', 5, 0)
-
-#endif /* __PRIVCMD_H__ */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/linux-public/suspend.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/linux-public/suspend.h Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,43 +0,0 @@
-/******************************************************************************
- * suspend.h
- *
- * Copyright (c) 2003-2004, K A Fraser
- *
- * This file may be distributed separately from the Linux kernel, or
- * incorporated into other software packages, subject to the following license:
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this source file (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use, copy, modify,
- * merge, publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-#ifndef __ASM_XEN_SUSPEND_H__
-#define __ASM_XEN_SUSPEND_H__
-
-typedef struct suspend_record_st {
- /* To be filled in before resume. */
- start_info_t resume_info;
- /*
- * The number of a machine frame containing, in sequence, the number of
- * each machine frame that contains PFN -> MFN translation table data.
- */
- unsigned long pfn_to_mfn_frame_list;
- /* Number of entries in the PFN -> MFN translation table. */
- unsigned long nr_pfns;
-} suspend_record_t;
-
-#endif /* __ASM_XEN_SUSPEND_H__ */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/queues.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/queues.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,81 +0,0 @@
-
-/*
- * Oh dear. Task queues were removed from Linux 2.6 and replaced by work
- * queues. Unfortunately the semantics is not the same. With task queues we
- * can defer work until a particular event occurs -- this is not
- * straightforwardly done with work queues (queued work is performed asap, or
- * after some fixed timeout). Conversely, work queues are a (slightly) neater
- * way of deferring work to a process context than using task queues in 2.4.
- *
- * This is a bit of a needless reimplementation -- should have just pulled
- * the code from 2.4, but I tried leveraging work queues to simplify things.
- * They didn't help. :-(
- */
-
-#ifndef __QUEUES_H__
-#define __QUEUES_H__
-
-#include <linux/version.h>
-#include <linux/list.h>
-#include <linux/workqueue.h>
-
-struct tq_struct {
- void (*fn)(void *);
- void *arg;
- struct list_head list;
- unsigned long pending;
-};
-#define INIT_TQUEUE(_name, _fn, _arg) \
- do { \
- INIT_LIST_HEAD(&(_name)->list); \
- (_name)->pending = 0; \
- (_name)->fn = (_fn); (_name)->arg = (_arg); \
- } while ( 0 )
-#define DECLARE_TQUEUE(_name, _fn, _arg) \
- struct tq_struct _name = { (_fn), (_arg), LIST_HEAD_INIT((_name).list), 0 }
-
-typedef struct {
- struct list_head list;
- spinlock_t lock;
-} task_queue;
-#define DECLARE_TASK_QUEUE(_name) \
- task_queue _name = { LIST_HEAD_INIT((_name).list), SPIN_LOCK_UNLOCKED }
-
-static inline int queue_task(struct tq_struct *tqe, task_queue *tql)
-{
- unsigned long flags;
- if ( test_and_set_bit(0, &tqe->pending) )
- return 0;
- spin_lock_irqsave(&tql->lock, flags);
- list_add_tail(&tqe->list, &tql->list);
- spin_unlock_irqrestore(&tql->lock, flags);
- return 1;
-}
-
-static inline void run_task_queue(task_queue *tql)
-{
- struct list_head head, *ent;
- struct tq_struct *tqe;
- unsigned long flags;
- void (*fn)(void *);
- void *arg;
-
- spin_lock_irqsave(&tql->lock, flags);
- list_add(&head, &tql->list);
- list_del_init(&tql->list);
- spin_unlock_irqrestore(&tql->lock, flags);
-
- while ( !list_empty(&head) )
- {
- ent = head.next;
- list_del_init(ent);
- tqe = list_entry(ent, struct tq_struct, list);
- fn = tqe->fn;
- arg = tqe->arg;
- wmb();
- tqe->pending = 0;
- fn(arg);
- }
-}
-
-#endif /* __QUEUES_H__ */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/synch_bitops.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/synch_bitops.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,2 +0,0 @@
-
-#include <asm-i386/synch_bitops.h>
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/xen_proc.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/xen_proc.h Fri Jul 15
19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,13 +0,0 @@
-
-#ifndef __ASM_XEN_PROC_H__
-#define __ASM_XEN_PROC_H__
-
-#include <linux/config.h>
-#include <linux/proc_fs.h>
-
-extern struct proc_dir_entry *create_xen_proc_entry(
- const char *name, mode_t mode);
-extern void remove_xen_proc_entry(
- const char *name);
-
-#endif /* __ASM_XEN_PROC_H__ */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/asm-xen/xenbus.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/xenbus.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,143 +0,0 @@
-#ifndef _ASM_XEN_XENBUS_H
-#define _ASM_XEN_XENBUS_H
-/******************************************************************************
- * xenbus.h
- *
- * Talks to Xen Store to figure out what devices we have.
- *
- * Copyright (C) 2005 Rusty Russell, IBM Corporation
- *
- * This file may be distributed separately from the Linux kernel, or
- * incorporated into other software packages, subject to the following license:
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this source file (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use, copy, modify,
- * merge, publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-#include <linux/device.h>
-#include <asm/semaphore.h>
-
-/* A xenbus device. */
-struct xenbus_device {
- char *devicetype;
- char *subtype;
- char *nodename;
- int id;
- struct device dev;
-};
-
-static inline struct xenbus_device *to_xenbus_device(struct device *dev)
-{
- return container_of(dev, struct xenbus_device, dev);
-}
-
-struct xenbus_device_id
-{
- /* .../device/<device_type>/<identifier> */
- char devicetype[32]; /* General class of device. */
- char subtype[32]; /* Contents of "subtype" for this device */
-};
-
-/* A xenbus driver. */
-struct xenbus_driver {
- char *name;
- struct module *owner;
- const struct xenbus_device_id *ids;
- /* Called when xenstore is connected. */
- int (*connect) (struct xenbus_driver * drv);
-
- int (*probe) (struct xenbus_device * dev, const struct
xenbus_device_id * id);
- int (*remove) (struct xenbus_device * dev);
- int (*configure)(struct xenbus_device * dev);
-
- struct device_driver driver;
-};
-
-struct xenbus_evtchn {
- unsigned long dom1;
- unsigned long port1;
- unsigned long dom2;
- unsigned long port2;
-};
-
-static inline struct xenbus_driver *to_xenbus_driver(struct device_driver *drv)
-{
- return container_of(drv, struct xenbus_driver, driver);
-}
-
-int xenbus_register_driver(struct xenbus_driver *drv);
-void xenbus_unregister_driver(struct xenbus_driver *drv);
-
-int xenbus_register_backend(struct xenbus_driver *drv);
-void xenbus_unregister_backend(struct xenbus_driver *drv);
-
-/* Iterator over xenbus devices (frontend). */
-int xenbus_for_each_dev(struct xenbus_device * start, void * data,
- int (*fn)(struct xenbus_device *, void *));
-
-/* Iterator over xenbus drivers (frontend). */
-int xenbus_for_each_drv(struct xenbus_driver * start, void * data,
- int (*fn)(struct xenbus_driver *, void *));
-
-/* Iterator over xenbus drivers (backend). */
-int xenbus_for_each_backend(struct xenbus_driver * start, void * data,
- int (*fn)(struct xenbus_driver *, void *));
-
-/* Caller must hold this lock to call these functions. */
-extern struct semaphore xs_lock;
-
-char **xs_directory(const char *path, unsigned int *num);
-void *xs_read(const char *path, unsigned int *len);
-int xs_write(const char *path,
- const void *data, unsigned int len, int createflags);
-int xs_mkdir(const char *path);
-int xs_exists(const char *path);
-int xs_mkdirs(const char *path);
-int xs_rm(const char *path);
-int xs_transaction_start(const char *subtree);
-int xs_transaction_end(int abort);
-char *xs_get_domain_path(domid_t domid);
-
-/* Register callback to watch this node. */
-struct xenbus_watch
-{
- struct list_head list;
- char *node;
- unsigned int priority;
- void (*callback)(struct xenbus_watch *, const char *node);
-};
-
-int register_xenbus_watch(struct xenbus_watch *watch);
-void unregister_xenbus_watch(struct xenbus_watch *watch);
-
-char *xenbus_path(const char *dir, const char *name);
-char *xenbus_read(const char *dir, const char *name, unsigned int *data_n);
-int xenbus_write(const char *dir, const char *name,
- const char *data, int data_n);
-
-int xenbus_read_string(const char *dir, const char *name, char **val);
-int xenbus_write_string(const char *dir, const char *name, const char *val);
-int xenbus_read_ulong(const char *dir, const char *name, unsigned long *val);
-int xenbus_write_ulong(const char *dir, const char *name, unsigned long val);
-int xenbus_read_long(const char *dir, const char *name, long *val);
-int xenbus_write_long(const char *dir, const char *name, long val);
-int xenbus_read_mac(const char *dir, const char *name, unsigned char mac[6]);
-int xenbus_write_mac(const char *dir, const char *name, const unsigned char
mac[6]);
-int xenbus_read_evtchn(const char *dir, const char *name, struct xenbus_evtchn
*evtchn);
-int xenbus_message(const char *dir, const char *val, ...);
-
-#endif /* _ASM_XEN_XENBUS_H */
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.6.11-xen-sparse/include/linux/gfp.h
--- a/linux-2.6.11-xen-sparse/include/linux/gfp.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,138 +0,0 @@
-#ifndef __LINUX_GFP_H
-#define __LINUX_GFP_H
-
-#include <linux/mmzone.h>
-#include <linux/stddef.h>
-#include <linux/linkage.h>
-#include <linux/config.h>
-
-struct vm_area_struct;
-
-/*
- * GFP bitmasks..
- */
-/* Zone modifiers in GFP_ZONEMASK (see linux/mmzone.h - low two bits) */
-#define __GFP_DMA 0x01
-#define __GFP_HIGHMEM 0x02
-
-/*
- * Action modifiers - doesn't change the zoning
- *
- * __GFP_REPEAT: Try hard to allocate the memory, but the allocation attempt
- * _might_ fail. This depends upon the particular VM implementation.
- *
- * __GFP_NOFAIL: The VM implementation _must_ retry infinitely: the caller
- * cannot handle allocation failures.
- *
- * __GFP_NORETRY: The VM implementation must not retry indefinitely.
- */
-#define __GFP_WAIT 0x10 /* Can wait and reschedule? */
-#define __GFP_HIGH 0x20 /* Should access emergency pools? */
-#define __GFP_IO 0x40 /* Can start physical IO? */
-#define __GFP_FS 0x80 /* Can call down to low-level FS? */
-#define __GFP_COLD 0x100 /* Cache-cold page required */
-#define __GFP_NOWARN 0x200 /* Suppress page allocation failure warning */
-#define __GFP_REPEAT 0x400 /* Retry the allocation. Might fail */
-#define __GFP_NOFAIL 0x800 /* Retry for ever. Cannot fail */
-#define __GFP_NORETRY 0x1000 /* Do not retry. Might fail */
-#define __GFP_NO_GROW 0x2000 /* Slab internal usage */
-#define __GFP_COMP 0x4000 /* Add compound page metadata */
-#define __GFP_ZERO 0x8000 /* Return zeroed page on success */
-
-#define __GFP_BITS_SHIFT 16 /* Room for 16 __GFP_FOO bits */
-#define __GFP_BITS_MASK ((1 << __GFP_BITS_SHIFT) - 1)
-
-/* if you forget to add the bitmask here kernel will crash, period */
-#define GFP_LEVEL_MASK (__GFP_WAIT|__GFP_HIGH|__GFP_IO|__GFP_FS| \
- __GFP_COLD|__GFP_NOWARN|__GFP_REPEAT| \
- __GFP_NOFAIL|__GFP_NORETRY|__GFP_NO_GROW|__GFP_COMP)
-
-#define GFP_ATOMIC (__GFP_HIGH)
-#define GFP_NOIO (__GFP_WAIT)
-#define GFP_NOFS (__GFP_WAIT | __GFP_IO)
-#define GFP_KERNEL (__GFP_WAIT | __GFP_IO | __GFP_FS)
-#define GFP_USER (__GFP_WAIT | __GFP_IO | __GFP_FS)
-#define GFP_HIGHUSER (__GFP_WAIT | __GFP_IO | __GFP_FS | __GFP_HIGHMEM)
-
-/* Flag - indicates that the buffer will be suitable for DMA. Ignored on some
- platforms, used as appropriate on others */
-
-#define GFP_DMA __GFP_DMA
-
-
-/*
- * There is only one page-allocator function, and two main namespaces to
- * it. The alloc_page*() variants return 'struct page *' and as such
- * can allocate highmem pages, the *get*page*() variants return
- * virtual kernel addresses to the allocated page(s).
- */
-
-/*
- * We get the zone list from the current node and the gfp_mask.
- * This zone list contains a maximum of MAXNODES*MAX_NR_ZONES zones.
- *
- * For the normal case of non-DISCONTIGMEM systems the NODE_DATA() gets
- * optimized to &contig_page_data at compile-time.
- */
-
-/*
- * If arch_free_page returns non-zero then the generic free_page code can
- * immediately bail: the arch-specific function has done all the work.
- */
-#ifndef HAVE_ARCH_FREE_PAGE
-#define arch_free_page(page, order) 0
-#endif
-
-extern struct page *
-FASTCALL(__alloc_pages(unsigned int, unsigned int, struct zonelist *));
-
-static inline struct page *alloc_pages_node(int nid, unsigned int gfp_mask,
- unsigned int order)
-{
- if (unlikely(order >= MAX_ORDER))
- return NULL;
-
- return __alloc_pages(gfp_mask, order,
- NODE_DATA(nid)->node_zonelists + (gfp_mask & GFP_ZONEMASK));
-}
-
-#ifdef CONFIG_NUMA
-extern struct page *alloc_pages_current(unsigned gfp_mask, unsigned order);
-
-static inline struct page *
-alloc_pages(unsigned int gfp_mask, unsigned int order)
-{
- if (unlikely(order >= MAX_ORDER))
- return NULL;
-
- return alloc_pages_current(gfp_mask, order);
-}
-extern struct page *alloc_page_vma(unsigned gfp_mask,
- struct vm_area_struct *vma, unsigned long addr);
-#else
-#define alloc_pages(gfp_mask, order) \
- alloc_pages_node(numa_node_id(), gfp_mask, order)
-#define alloc_page_vma(gfp_mask, vma, addr) alloc_pages(gfp_mask, 0)
-#endif
-#define alloc_page(gfp_mask) alloc_pages(gfp_mask, 0)
-
-extern unsigned long FASTCALL(__get_free_pages(unsigned int gfp_mask, unsigned
int order));
-extern unsigned long FASTCALL(get_zeroed_page(unsigned int gfp_mask));
-
-#define __get_free_page(gfp_mask) \
- __get_free_pages((gfp_mask),0)
-
-#define __get_dma_pages(gfp_mask, order) \
- __get_free_pages((gfp_mask) | GFP_DMA,(order))
-
-extern void FASTCALL(__free_pages(struct page *page, unsigned int order));
-extern void FASTCALL(free_pages(unsigned long addr, unsigned int order));
-extern void FASTCALL(free_hot_page(struct page *page));
-extern void FASTCALL(free_cold_page(struct page *page));
-
-#define __free_page(page) __free_pages((page), 0)
-#define free_page(addr) free_pages((addr),0)
-
-void page_alloc_init(void);
-
-#endif /* __LINUX_GFP_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/linux/highmem.h
--- a/linux-2.6.11-xen-sparse/include/linux/highmem.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,106 +0,0 @@
-#ifndef _LINUX_HIGHMEM_H
-#define _LINUX_HIGHMEM_H
-
-#include <linux/config.h>
-#include <linux/fs.h>
-#include <linux/mm.h>
-
-#include <asm/cacheflush.h>
-
-#ifdef CONFIG_HIGHMEM
-
-#include <asm/highmem.h>
-
-/* declarations for linux/mm/highmem.c */
-unsigned int nr_free_highpages(void);
-void kmap_flush_unused(void);
-
-#else /* CONFIG_HIGHMEM */
-
-static inline unsigned int nr_free_highpages(void) { return 0; }
-static inline void kmap_flush_unused(void) { }
-
-static inline void *kmap(struct page *page)
-{
- might_sleep();
- return page_address(page);
-}
-
-#define kunmap(page) do { (void) (page); } while (0)
-
-#define kmap_atomic(page, idx) page_address(page)
-#define kunmap_atomic(addr, idx) do { } while (0)
-#define kmap_atomic_to_page(ptr) virt_to_page(ptr)
-
-#endif /* CONFIG_HIGHMEM */
-
-/* when CONFIG_HIGHMEM is not set these will be plain clear/copy_page */
-static inline void clear_user_highpage(struct page *page, unsigned long vaddr)
-{
- void *addr = kmap_atomic(page, KM_USER0);
- clear_user_page(addr, vaddr, page);
- kunmap_atomic(addr, KM_USER0);
- /* Make sure this page is cleared on other CPU's too before using it */
- smp_wmb();
-}
-
-#ifndef __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
-static inline struct page *
-alloc_zeroed_user_highpage(struct vm_area_struct *vma, unsigned long vaddr)
-{
- struct page *page = alloc_page_vma(GFP_HIGHUSER, vma, vaddr);
-
- if (page)
- clear_user_highpage(page, vaddr);
-
- return page;
-}
-#endif
-
-static inline void clear_highpage(struct page *page)
-{
- void *kaddr = kmap_atomic(page, KM_USER0);
- clear_page(kaddr);
- kunmap_atomic(kaddr, KM_USER0);
-}
-
-/*
- * Same but also flushes aliased cache contents to RAM.
- */
-static inline void memclear_highpage_flush(struct page *page, unsigned int
offset, unsigned int size)
-{
- void *kaddr;
-
- BUG_ON(offset + size > PAGE_SIZE);
-
- kaddr = kmap_atomic(page, KM_USER0);
- memset((char *)kaddr + offset, 0, size);
- flush_dcache_page(page);
- kunmap_atomic(kaddr, KM_USER0);
-}
-
-static inline void copy_user_highpage(struct page *to, struct page *from,
unsigned long vaddr)
-{
- char *vfrom, *vto;
-
- vfrom = kmap_atomic(from, KM_USER0);
- vto = kmap_atomic(to, KM_USER1);
- copy_user_page(vto, vfrom, vaddr, to);
- kunmap_atomic(vfrom, KM_USER0);
- kunmap_atomic(vto, KM_USER1);
- /* Make sure this page is cleared on other CPU's too before using it */
- smp_wmb();
-}
-
-static inline void copy_highpage(struct page *to, struct page *from)
-{
- char *vfrom, *vto;
-
- vfrom = kmap_atomic(from, KM_USER0);
- vto = kmap_atomic(to, KM_USER1);
- copy_page(vto, vfrom);
- kunmap_atomic(vfrom, KM_USER0);
- kunmap_atomic(vto, KM_USER1);
-}
-
-#endif /* _LINUX_HIGHMEM_H */
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.6.11-xen-sparse/include/linux/irq.h
--- a/linux-2.6.11-xen-sparse/include/linux/irq.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,98 +0,0 @@
-#ifndef __irq_h
-#define __irq_h
-
-/*
- * Please do not include this file in generic code. There is currently
- * no requirement for any architecture to implement anything held
- * within this file.
- *
- * Thanks. --rmk
- */
-
-#include <linux/config.h>
-
-#if !defined(CONFIG_ARCH_S390)
-
-#include <linux/linkage.h>
-#include <linux/cache.h>
-#include <linux/spinlock.h>
-#include <linux/cpumask.h>
-
-#include <asm/irq.h>
-#include <asm/ptrace.h>
-
-/*
- * IRQ line status.
- */
-#define IRQ_INPROGRESS 1 /* IRQ handler active - do not enter! */
-#define IRQ_DISABLED 2 /* IRQ disabled - do not enter! */
-#define IRQ_PENDING 4 /* IRQ pending - replay on enable */
-#define IRQ_REPLAY 8 /* IRQ has been replayed but not acked yet */
-#define IRQ_AUTODETECT 16 /* IRQ is being autodetected */
-#define IRQ_WAITING 32 /* IRQ not yet seen - for autodetection */
-#define IRQ_LEVEL 64 /* IRQ level triggered */
-#define IRQ_MASKED 128 /* IRQ masked - shouldn't be seen again */
-#define IRQ_PER_CPU 256 /* IRQ is per CPU */
-
-/*
- * Interrupt controller descriptor. This is all we need
- * to describe about the low-level hardware.
- */
-struct hw_interrupt_type {
- const char * typename;
- unsigned int (*startup)(unsigned int irq);
- void (*shutdown)(unsigned int irq);
- void (*enable)(unsigned int irq);
- void (*disable)(unsigned int irq);
- void (*ack)(unsigned int irq);
- void (*end)(unsigned int irq);
- void (*set_affinity)(unsigned int irq, cpumask_t dest);
-};
-
-typedef struct hw_interrupt_type hw_irq_controller;
-
-/*
- * This is the "IRQ descriptor", which contains various information
- * about the irq, including what kind of hardware handling it has,
- * whether it is disabled etc etc.
- *
- * Pad this out to 32 bytes for cache and indexing reasons.
- */
-typedef struct irq_desc {
- hw_irq_controller *handler;
- void *handler_data;
- struct irqaction *action; /* IRQ action list */
- unsigned int status; /* IRQ status */
- unsigned int depth; /* nested irq disables */
- unsigned int irq_count; /* For detecting broken interrupts */
- unsigned int irqs_unhandled;
- spinlock_t lock;
-} ____cacheline_aligned irq_desc_t;
-
-extern irq_desc_t irq_desc [NR_IRQS];
-
-#include <asm/hw_irq.h> /* the arch dependent stuff */
-
-extern int setup_irq(unsigned int irq, struct irqaction * new);
-extern int teardown_irq(unsigned int irq, struct irqaction * old);
-
-#ifdef CONFIG_GENERIC_HARDIRQS
-extern cpumask_t irq_affinity[NR_IRQS];
-extern int no_irq_affinity;
-extern int noirqdebug_setup(char *str);
-
-extern fastcall int handle_IRQ_event(unsigned int irq, struct pt_regs *regs,
- struct irqaction *action);
-extern fastcall unsigned int __do_IRQ(unsigned int irq, struct pt_regs *regs);
-extern void note_interrupt(unsigned int irq, irq_desc_t *desc, int action_ret);
-extern void report_bad_irq(unsigned int irq, irq_desc_t *desc, int action_ret);
-extern int can_request_irq(unsigned int irq, unsigned long irqflags);
-
-extern void init_irq_proc(void);
-#endif
-
-extern hw_irq_controller no_irq_type; /* needed in every arch ? */
-
-#endif
-
-#endif /* __irq_h */
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.6.11-xen-sparse/include/linux/mm.h
--- a/linux-2.6.11-xen-sparse/include/linux/mm.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,865 +0,0 @@
-#ifndef _LINUX_MM_H
-#define _LINUX_MM_H
-
-#include <linux/sched.h>
-#include <linux/errno.h>
-
-#ifdef __KERNEL__
-
-#include <linux/config.h>
-#include <linux/gfp.h>
-#include <linux/list.h>
-#include <linux/mmzone.h>
-#include <linux/rbtree.h>
-#include <linux/prio_tree.h>
-#include <linux/fs.h>
-
-struct mempolicy;
-struct anon_vma;
-
-#ifndef CONFIG_DISCONTIGMEM /* Don't use mapnrs, do it properly */
-extern unsigned long max_mapnr;
-#endif
-
-extern unsigned long num_physpages;
-extern void * high_memory;
-extern unsigned long vmalloc_earlyreserve;
-extern int page_cluster;
-
-#ifdef CONFIG_SYSCTL
-extern int sysctl_legacy_va_layout;
-#else
-#define sysctl_legacy_va_layout 0
-#endif
-
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/processor.h>
-#include <asm/atomic.h>
-
-#ifndef MM_VM_SIZE
-#define MM_VM_SIZE(mm) ((TASK_SIZE + PGDIR_SIZE - 1) & PGDIR_MASK)
-#endif
-
-#define nth_page(page,n) pfn_to_page(page_to_pfn((page)) + (n))
-
-/*
- * Linux kernel virtual memory manager primitives.
- * The idea being to have a "virtual" mm in the same way
- * we have a virtual fs - giving a cleaner interface to the
- * mm details, and allowing different kinds of memory mappings
- * (from shared memory to executable loading to arbitrary
- * mmap() functions).
- */
-
-/*
- * This struct defines a memory VMM memory area. There is one of these
- * per VM-area/task. A VM area is any part of the process virtual memory
- * space that has a special rule for the page-fault handlers (ie a shared
- * library, the executable area etc).
- */
-struct vm_area_struct {
- struct mm_struct * vm_mm; /* The address space we belong to. */
- unsigned long vm_start; /* Our start address within vm_mm. */
- unsigned long vm_end; /* The first byte after our end address
- within vm_mm. */
-
- /* linked list of VM areas per task, sorted by address */
- struct vm_area_struct *vm_next;
-
- pgprot_t vm_page_prot; /* Access permissions of this VMA. */
- unsigned long vm_flags; /* Flags, listed below. */
-
- struct rb_node vm_rb;
-
- /*
- * For areas with an address space and backing store,
- * linkage into the address_space->i_mmap prio tree, or
- * linkage to the list of like vmas hanging off its node, or
- * linkage of vma in the address_space->i_mmap_nonlinear list.
- */
- union {
- struct {
- struct list_head list;
- void *parent; /* aligns with prio_tree_node parent */
- struct vm_area_struct *head;
- } vm_set;
-
- struct raw_prio_tree_node prio_tree_node;
- } shared;
-
- /*
- * A file's MAP_PRIVATE vma can be in both i_mmap tree and anon_vma
- * list, after a COW of one of the file pages. A MAP_SHARED vma
- * can only be in the i_mmap tree. An anonymous MAP_PRIVATE, stack
- * or brk vma (with NULL file) can only be in an anon_vma list.
- */
- struct list_head anon_vma_node; /* Serialized by anon_vma->lock */
- struct anon_vma *anon_vma; /* Serialized by page_table_lock */
-
- /* Function pointers to deal with this struct. */
- struct vm_operations_struct * vm_ops;
-
- /* Information about our backing store: */
- unsigned long vm_pgoff; /* Offset (within vm_file) in PAGE_SIZE
- units, *not* PAGE_CACHE_SIZE */
- struct file * vm_file; /* File we map to (can be NULL). */
- void * vm_private_data; /* was vm_pte (shared mem) */
- unsigned long vm_truncate_count;/* truncate_count or restart_addr */
-
-#ifndef CONFIG_MMU
- atomic_t vm_usage; /* refcount (VMAs shared if !MMU) */
-#endif
-#ifdef CONFIG_NUMA
- struct mempolicy *vm_policy; /* NUMA policy for the VMA */
-#endif
-};
-
-/*
- * This struct defines the per-mm list of VMAs for uClinux. If CONFIG_MMU is
- * disabled, then there's a single shared list of VMAs maintained by the
- * system, and mm's subscribe to these individually
- */
-struct vm_list_struct {
- struct vm_list_struct *next;
- struct vm_area_struct *vma;
-};
-
-#ifndef CONFIG_MMU
-extern struct rb_root nommu_vma_tree;
-extern struct rw_semaphore nommu_vma_sem;
-
-extern unsigned int kobjsize(const void *objp);
-#endif
-
-/*
- * vm_flags..
- */
-#define VM_READ 0x00000001 /* currently active flags */
-#define VM_WRITE 0x00000002
-#define VM_EXEC 0x00000004
-#define VM_SHARED 0x00000008
-
-#define VM_MAYREAD 0x00000010 /* limits for mprotect() etc */
-#define VM_MAYWRITE 0x00000020
-#define VM_MAYEXEC 0x00000040
-#define VM_MAYSHARE 0x00000080
-
-#define VM_GROWSDOWN 0x00000100 /* general info on the segment */
-#define VM_GROWSUP 0x00000200
-#define VM_SHM 0x00000400 /* shared memory area, don't swap out */
-#define VM_DENYWRITE 0x00000800 /* ETXTBSY on write attempts.. */
-
-#define VM_EXECUTABLE 0x00001000
-#define VM_LOCKED 0x00002000
-#define VM_IO 0x00004000 /* Memory mapped I/O or similar */
-
- /* Used by sys_madvise() */
-#define VM_SEQ_READ 0x00008000 /* App will access data sequentially */
-#define VM_RAND_READ 0x00010000 /* App will not benefit from clustered
reads */
-
-#define VM_DONTCOPY 0x00020000 /* Do not copy this vma on fork */
-#define VM_DONTEXPAND 0x00040000 /* Cannot expand with mremap() */
-#define VM_RESERVED 0x00080000 /* Don't unmap it from swap_out */
-#define VM_ACCOUNT 0x00100000 /* Is a VM accounted object */
-#define VM_HUGETLB 0x00400000 /* Huge TLB Page VM */
-#define VM_NONLINEAR 0x00800000 /* Is non-linear (remap_file_pages) */
-#define VM_FOREIGN 0x01000000 /* Has pages belonging to another VM */
-
-#ifndef VM_STACK_DEFAULT_FLAGS /* arch can override this */
-#define VM_STACK_DEFAULT_FLAGS VM_DATA_DEFAULT_FLAGS
-#endif
-
-#ifdef CONFIG_STACK_GROWSUP
-#define VM_STACK_FLAGS (VM_GROWSUP | VM_STACK_DEFAULT_FLAGS | VM_ACCOUNT)
-#else
-#define VM_STACK_FLAGS (VM_GROWSDOWN | VM_STACK_DEFAULT_FLAGS | VM_ACCOUNT)
-#endif
-
-#define VM_READHINTMASK (VM_SEQ_READ | VM_RAND_READ)
-#define VM_ClearReadHint(v) (v)->vm_flags &= ~VM_READHINTMASK
-#define VM_NormalReadHint(v) (!((v)->vm_flags & VM_READHINTMASK))
-#define VM_SequentialReadHint(v) ((v)->vm_flags & VM_SEQ_READ)
-#define VM_RandomReadHint(v) ((v)->vm_flags & VM_RAND_READ)
-
-/*
- * mapping from the currently active vm_flags protection bits (the
- * low four bits) to a page protection mask..
- */
-extern pgprot_t protection_map[16];
-
-
-/*
- * These are the virtual MM functions - opening of an area, closing and
- * unmapping it (needed to keep files on disk up-to-date etc), pointer
- * to the functions called when a no-page or a wp-page exception occurs.
- */
-struct vm_operations_struct {
- void (*open)(struct vm_area_struct * area);
- void (*close)(struct vm_area_struct * area);
- struct page * (*nopage)(struct vm_area_struct * area, unsigned long
address, int *type);
- int (*populate)(struct vm_area_struct * area, unsigned long address,
unsigned long len, pgprot_t prot, unsigned long pgoff, int nonblock);
-#ifdef CONFIG_NUMA
- int (*set_policy)(struct vm_area_struct *vma, struct mempolicy *new);
- struct mempolicy *(*get_policy)(struct vm_area_struct *vma,
- unsigned long addr);
-#endif
-};
-
-struct mmu_gather;
-struct inode;
-
-#ifdef ARCH_HAS_ATOMIC_UNSIGNED
-typedef unsigned page_flags_t;
-#else
-typedef unsigned long page_flags_t;
-#endif
-
-/*
- * Each physical page in the system has a struct page associated with
- * it to keep track of whatever it is we are using the page for at the
- * moment. Note that we have no way to track which tasks are using
- * a page.
- */
-struct page {
- page_flags_t flags; /* Atomic flags, some possibly
- * updated asynchronously */
- atomic_t _count; /* Usage count, see below. */
- atomic_t _mapcount; /* Count of ptes mapped in mms,
- * to show when page is mapped
- * & limit reverse map searches.
- */
- unsigned long private; /* Mapping-private opaque data:
- * usually used for buffer_heads
- * if PagePrivate set; used for
- * swp_entry_t if PageSwapCache
- * When page is free, this indicates
- * order in the buddy system.
- */
- struct address_space *mapping; /* If low bit clear, points to
- * inode address_space, or NULL.
- * If page mapped as anonymous
- * memory, low bit is set, and
- * it points to anon_vma object:
- * see PAGE_MAPPING_ANON below.
- */
- pgoff_t index; /* Our offset within mapping. */
- struct list_head lru; /* Pageout list, eg. active_list
- * protected by zone->lru_lock !
- */
- /*
- * On machines where all RAM is mapped into kernel address space,
- * we can simply calculate the virtual address. On machines with
- * highmem some memory is mapped into kernel virtual memory
- * dynamically, so we need a place to store that address.
- * Note that this field could be 16 bits on x86 ... ;)
- *
- * Architectures with slow multiplication can define
- * WANT_PAGE_VIRTUAL in asm/page.h
- */
-#if defined(WANT_PAGE_VIRTUAL)
- void *virtual; /* Kernel virtual address (NULL if
- not kmapped, ie. highmem) */
-#endif /* WANT_PAGE_VIRTUAL */
-};
-
-/*
- * FIXME: take this include out, include page-flags.h in
- * files which need it (119 of them)
- */
-#include <linux/page-flags.h>
-
-/*
- * Methods to modify the page usage count.
- *
- * What counts for a page usage:
- * - cache mapping (page->mapping)
- * - private data (page->private)
- * - page mapped in a task's page tables, each mapping
- * is counted separately
- *
- * Also, many kernel routines increase the page count before a critical
- * routine so they can be sure the page doesn't go away from under them.
- *
- * Since 2.6.6 (approx), a free page has ->_count = -1. This is so that we
- * can use atomic_add_negative(-1, page->_count) to detect when the page
- * becomes free and so that we can also use atomic_inc_and_test to atomically
- * detect when we just tried to grab a ref on a page which some other CPU has
- * already deemed to be freeable.
- *
- * NO code should make assumptions about this internal detail! Use the
provided
- * macros which retain the old rules: page_count(page) == 0 is a free page.
- */
-
-/*
- * Drop a ref, return true if the logical refcount fell to zero (the page has
- * no users)
- */
-#define put_page_testzero(p) \
- ({ \
- BUG_ON(page_count(p) == 0); \
- atomic_add_negative(-1, &(p)->_count); \
- })
-
-/*
- * Grab a ref, return true if the page previously had a logical refcount of
- * zero. ie: returns true if we just grabbed an already-deemed-to-be-free page
- */
-#define get_page_testone(p) atomic_inc_and_test(&(p)->_count)
-
-#define set_page_count(p,v) atomic_set(&(p)->_count, v - 1)
-#define __put_page(p) atomic_dec(&(p)->_count)
-
-extern void FASTCALL(__page_cache_release(struct page *));
-
-#ifdef CONFIG_HUGETLB_PAGE
-
-static inline int page_count(struct page *p)
-{
- if (PageCompound(p))
- p = (struct page *)p->private;
- return atomic_read(&(p)->_count) + 1;
-}
-
-static inline void get_page(struct page *page)
-{
- if (unlikely(PageCompound(page)))
- page = (struct page *)page->private;
- atomic_inc(&page->_count);
-}
-
-void put_page(struct page *page);
-
-#else /* CONFIG_HUGETLB_PAGE */
-
-#define page_count(p) (atomic_read(&(p)->_count) + 1)
-
-static inline void get_page(struct page *page)
-{
- atomic_inc(&page->_count);
-}
-
-static inline void put_page(struct page *page)
-{
- if (!PageReserved(page) && put_page_testzero(page))
- __page_cache_release(page);
-}
-
-#endif /* CONFIG_HUGETLB_PAGE */
-
-/*
- * Multiple processes may "see" the same page. E.g. for untouched
- * mappings of /dev/null, all processes see the same page full of
- * zeroes, and text pages of executables and shared libraries have
- * only one copy in memory, at most, normally.
- *
- * For the non-reserved pages, page_count(page) denotes a reference count.
- * page_count() == 0 means the page is free.
- * page_count() == 1 means the page is used for exactly one purpose
- * (e.g. a private data page of one process).
- *
- * A page may be used for kmalloc() or anyone else who does a
- * __get_free_page(). In this case the page_count() is at least 1, and
- * all other fields are unused but should be 0 or NULL. The
- * management of this page is the responsibility of the one who uses
- * it.
- *
- * The other pages (we may call them "process pages") are completely
- * managed by the Linux memory manager: I/O, buffers, swapping etc.
- * The following discussion applies only to them.
- *
- * A page may belong to an inode's memory mapping. In this case,
- * page->mapping is the pointer to the inode, and page->index is the
- * file offset of the page, in units of PAGE_CACHE_SIZE.
- *
- * A page contains an opaque `private' member, which belongs to the
- * page's address_space. Usually, this is the address of a circular
- * list of the page's disk buffers.
- *
- * For pages belonging to inodes, the page_count() is the number of
- * attaches, plus 1 if `private' contains something, plus one for
- * the page cache itself.
- *
- * All pages belonging to an inode are in these doubly linked lists:
- * mapping->clean_pages, mapping->dirty_pages and mapping->locked_pages;
- * using the page->list list_head. These fields are also used for
- * freelist managemet (when page_count()==0).
- *
- * There is also a per-mapping radix tree mapping index to the page
- * in memory if present. The tree is rooted at mapping->root.
- *
- * All process pages can do I/O:
- * - inode pages may need to be read from disk,
- * - inode pages which have been modified and are MAP_SHARED may need
- * to be written to disk,
- * - private pages which have been modified may need to be swapped out
- * to swap space and (later) to be read back into memory.
- */
-
-/*
- * The zone field is never updated after free_area_init_core()
- * sets it, so none of the operations on it need to be atomic.
- * We'll have up to (MAX_NUMNODES * MAX_NR_ZONES) zones total,
- * so we use (MAX_NODES_SHIFT + MAX_ZONES_SHIFT) here to get enough bits.
- */
-#define NODEZONE_SHIFT (sizeof(page_flags_t)*8 - MAX_NODES_SHIFT -
MAX_ZONES_SHIFT)
-#define NODEZONE(node, zone) ((node << ZONES_SHIFT) | zone)
-
-static inline unsigned long page_zonenum(struct page *page)
-{
- return (page->flags >> NODEZONE_SHIFT) & (~(~0UL << ZONES_SHIFT));
-}
-static inline unsigned long page_to_nid(struct page *page)
-{
- return (page->flags >> (NODEZONE_SHIFT + ZONES_SHIFT));
-}
-
-struct zone;
-extern struct zone *zone_table[];
-
-static inline struct zone *page_zone(struct page *page)
-{
- return zone_table[page->flags >> NODEZONE_SHIFT];
-}
-
-static inline void set_page_zone(struct page *page, unsigned long nodezone_num)
-{
- page->flags &= ~(~0UL << NODEZONE_SHIFT);
- page->flags |= nodezone_num << NODEZONE_SHIFT;
-}
-
-#ifndef CONFIG_DISCONTIGMEM
-/* The array of struct pages - for discontigmem use pgdat->lmem_map */
-extern struct page *mem_map;
-#endif
-
-static inline void *lowmem_page_address(struct page *page)
-{
- return __va(page_to_pfn(page) << PAGE_SHIFT);
-}
-
-#if defined(CONFIG_HIGHMEM) && !defined(WANT_PAGE_VIRTUAL)
-#define HASHED_PAGE_VIRTUAL
-#endif
-
-#if defined(WANT_PAGE_VIRTUAL)
-#define page_address(page) ((page)->virtual)
-#define set_page_address(page, address) \
- do { \
- (page)->virtual = (address); \
- } while(0)
-#define page_address_init() do { } while(0)
-#endif
-
-#if defined(HASHED_PAGE_VIRTUAL)
-void *page_address(struct page *page);
-void set_page_address(struct page *page, void *virtual);
-void page_address_init(void);
-#endif
-
-#if !defined(HASHED_PAGE_VIRTUAL) && !defined(WANT_PAGE_VIRTUAL)
-#define page_address(page) lowmem_page_address(page)
-#define set_page_address(page, address) do { } while(0)
-#define page_address_init() do { } while(0)
-#endif
-
-/*
- * On an anonymous page mapped into a user virtual memory area,
- * page->mapping points to its anon_vma, not to a struct address_space;
- * with the PAGE_MAPPING_ANON bit set to distinguish it.
- *
- * Please note that, confusingly, "page_mapping" refers to the inode
- * address_space which maps the page from disk; whereas "page_mapped"
- * refers to user virtual address space into which the page is mapped.
- */
-#define PAGE_MAPPING_ANON 1
-
-extern struct address_space swapper_space;
-static inline struct address_space *page_mapping(struct page *page)
-{
- struct address_space *mapping = page->mapping;
-
- if (unlikely(PageSwapCache(page)))
- mapping = &swapper_space;
- else if (unlikely((unsigned long)mapping & PAGE_MAPPING_ANON))
- mapping = NULL;
- return mapping;
-}
-
-static inline int PageAnon(struct page *page)
-{
- return ((unsigned long)page->mapping & PAGE_MAPPING_ANON) != 0;
-}
-
-/*
- * Return the pagecache index of the passed page. Regular pagecache pages
- * use ->index whereas swapcache pages use ->private
- */
-static inline pgoff_t page_index(struct page *page)
-{
- if (unlikely(PageSwapCache(page)))
- return page->private;
- return page->index;
-}
-
-/*
- * The atomic page->_mapcount, like _count, starts from -1:
- * so that transitions both from it and to it can be tracked,
- * using atomic_inc_and_test and atomic_add_negative(-1).
- */
-static inline void reset_page_mapcount(struct page *page)
-{
- atomic_set(&(page)->_mapcount, -1);
-}
-
-static inline int page_mapcount(struct page *page)
-{
- return atomic_read(&(page)->_mapcount) + 1;
-}
-
-/*
- * Return true if this page is mapped into pagetables.
- */
-static inline int page_mapped(struct page *page)
-{
- return atomic_read(&(page)->_mapcount) >= 0;
-}
-
-/*
- * Error return values for the *_nopage functions
- */
-#define NOPAGE_SIGBUS (NULL)
-#define NOPAGE_OOM ((struct page *) (-1))
-
-/*
- * Different kinds of faults, as returned by handle_mm_fault().
- * Used to decide whether a process gets delivered SIGBUS or
- * just gets major/minor fault counters bumped up.
- */
-#define VM_FAULT_OOM (-1)
-#define VM_FAULT_SIGBUS 0
-#define VM_FAULT_MINOR 1
-#define VM_FAULT_MAJOR 2
-
-#define offset_in_page(p) ((unsigned long)(p) & ~PAGE_MASK)
-
-extern void show_free_areas(void);
-
-#ifdef CONFIG_SHMEM
-struct page *shmem_nopage(struct vm_area_struct *vma,
- unsigned long address, int *type);
-int shmem_set_policy(struct vm_area_struct *vma, struct mempolicy *new);
-struct mempolicy *shmem_get_policy(struct vm_area_struct *vma,
- unsigned long addr);
-int shmem_lock(struct file *file, int lock, struct user_struct *user);
-#else
-#define shmem_nopage filemap_nopage
-#define shmem_lock(a, b, c) ({0;}) /* always in memory, no need to lock */
-#define shmem_set_policy(a, b) (0)
-#define shmem_get_policy(a, b) (NULL)
-#endif
-struct file *shmem_file_setup(char *name, loff_t size, unsigned long flags);
-
-int shmem_zero_setup(struct vm_area_struct *);
-
-static inline int can_do_mlock(void)
-{
- if (capable(CAP_IPC_LOCK))
- return 1;
- if (current->signal->rlim[RLIMIT_MEMLOCK].rlim_cur != 0)
- return 1;
- return 0;
-}
-extern int user_shm_lock(size_t, struct user_struct *);
-extern void user_shm_unlock(size_t, struct user_struct *);
-
-/*
- * Parameter block passed down to zap_pte_range in exceptional cases.
- */
-struct zap_details {
- struct vm_area_struct *nonlinear_vma; /* Check page->index if set */
- struct address_space *check_mapping; /* Check page->mapping if set */
- pgoff_t first_index; /* Lowest page->index to unmap
*/
- pgoff_t last_index; /* Highest page->index to unmap
*/
- spinlock_t *i_mmap_lock; /* For unmap_mapping_range: */
- unsigned long break_addr; /* Where unmap_vmas stopped */
- unsigned long truncate_count; /* Compare vm_truncate_count */
-};
-
-void zap_page_range(struct vm_area_struct *vma, unsigned long address,
- unsigned long size, struct zap_details *);
-int unmap_vmas(struct mmu_gather **tlbp, struct mm_struct *mm,
- struct vm_area_struct *start_vma, unsigned long start_addr,
- unsigned long end_addr, unsigned long *nr_accounted,
- struct zap_details *);
-void clear_page_range(struct mmu_gather *tlb, unsigned long addr, unsigned
long end);
-int copy_page_range(struct mm_struct *dst, struct mm_struct *src,
- struct vm_area_struct *vma);
-int zeromap_page_range(struct vm_area_struct *vma, unsigned long from,
- unsigned long size, pgprot_t prot);
-void unmap_mapping_range(struct address_space *mapping,
- loff_t const holebegin, loff_t const holelen, int even_cows);
-
-static inline void unmap_shared_mapping_range(struct address_space *mapping,
- loff_t const holebegin, loff_t const holelen)
-{
- unmap_mapping_range(mapping, holebegin, holelen, 0);
-}
-
-extern int vmtruncate(struct inode * inode, loff_t offset);
-extern pud_t *FASTCALL(__pud_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned
long address));
-extern pmd_t *FASTCALL(__pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned
long address));
-extern pte_t *FASTCALL(pte_alloc_kernel(struct mm_struct *mm, pmd_t *pmd,
unsigned long address));
-extern pte_t *FASTCALL(pte_alloc_map(struct mm_struct *mm, pmd_t *pmd,
unsigned long address));
-extern int install_page(struct mm_struct *mm, struct vm_area_struct *vma,
unsigned long addr, struct page *page, pgprot_t prot);
-extern int install_file_pte(struct mm_struct *mm, struct vm_area_struct *vma,
unsigned long addr, unsigned long pgoff, pgprot_t prot);
-extern int handle_mm_fault(struct mm_struct *mm,struct vm_area_struct *vma,
unsigned long address, int write_access);
-extern int make_pages_present(unsigned long addr, unsigned long end);
-extern int access_process_vm(struct task_struct *tsk, unsigned long addr, void
*buf, int len, int write);
-void install_arg_page(struct vm_area_struct *, struct page *, unsigned long);
-
-int get_user_pages(struct task_struct *tsk, struct mm_struct *mm, unsigned
long start,
- int len, int write, int force, struct page **pages, struct
vm_area_struct **vmas);
-
-int __set_page_dirty_buffers(struct page *page);
-int __set_page_dirty_nobuffers(struct page *page);
-int redirty_page_for_writepage(struct writeback_control *wbc,
- struct page *page);
-int FASTCALL(set_page_dirty(struct page *page));
-int set_page_dirty_lock(struct page *page);
-int clear_page_dirty_for_io(struct page *page);
-
-extern unsigned long do_mremap(unsigned long addr,
- unsigned long old_len, unsigned long new_len,
- unsigned long flags, unsigned long new_addr);
-
-/*
- * Prototype to add a shrinker callback for ageable caches.
- *
- * These functions are passed a count `nr_to_scan' and a gfpmask. They should
- * scan `nr_to_scan' objects, attempting to free them.
- *
- * The callback must the number of objects which remain in the cache.
- *
- * The callback will be passes nr_to_scan == 0 when the VM is querying the
- * cache size, so a fastpath for that case is appropriate.
- */
-typedef int (*shrinker_t)(int nr_to_scan, unsigned int gfp_mask);
-
-/*
- * Add an aging callback. The int is the number of 'seeks' it takes
- * to recreate one of the objects that these functions age.
- */
-
-#define DEFAULT_SEEKS 2
-struct shrinker;
-extern struct shrinker *set_shrinker(int, shrinker_t);
-extern void remove_shrinker(struct shrinker *shrinker);
-
-/*
- * On a two-level or three-level page table, this ends up being trivial. Thus
- * the inlining and the symmetry break with pte_alloc_map() that does all
- * of this out-of-line.
- */
-/*
- * The following ifdef needed to get the 4level-fixup.h header to work.
- * Remove it when 4level-fixup.h has been removed.
- */
-#ifdef CONFIG_MMU
-#ifndef __ARCH_HAS_4LEVEL_HACK
-static inline pud_t *pud_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long
address)
-{
- if (pgd_none(*pgd))
- return __pud_alloc(mm, pgd, address);
- return pud_offset(pgd, address);
-}
-
-static inline pmd_t *pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long
address)
-{
- if (pud_none(*pud))
- return __pmd_alloc(mm, pud, address);
- return pmd_offset(pud, address);
-}
-#endif
-#endif /* CONFIG_MMU */
-
-extern void free_area_init(unsigned long * zones_size);
-extern void free_area_init_node(int nid, pg_data_t *pgdat,
- unsigned long * zones_size, unsigned long zone_start_pfn,
- unsigned long *zholes_size);
-extern void memmap_init_zone(unsigned long, int, unsigned long, unsigned long);
-extern void mem_init(void);
-extern void show_mem(void);
-extern void si_meminfo(struct sysinfo * val);
-extern void si_meminfo_node(struct sysinfo *val, int nid);
-
-/* prio_tree.c */
-void vma_prio_tree_add(struct vm_area_struct *, struct vm_area_struct *old);
-void vma_prio_tree_insert(struct vm_area_struct *, struct prio_tree_root *);
-void vma_prio_tree_remove(struct vm_area_struct *, struct prio_tree_root *);
-struct vm_area_struct *vma_prio_tree_next(struct vm_area_struct *vma,
- struct prio_tree_iter *iter);
-
-#define vma_prio_tree_foreach(vma, iter, root, begin, end) \
- for (prio_tree_iter_init(iter, root, begin, end), vma = NULL; \
- (vma = vma_prio_tree_next(vma, iter)); )
-
-static inline void vma_nonlinear_insert(struct vm_area_struct *vma,
- struct list_head *list)
-{
- vma->shared.vm_set.parent = NULL;
- list_add_tail(&vma->shared.vm_set.list, list);
-}
-
-/* mmap.c */
-extern int __vm_enough_memory(long pages, int cap_sys_admin);
-extern void vma_adjust(struct vm_area_struct *vma, unsigned long start,
- unsigned long end, pgoff_t pgoff, struct vm_area_struct *insert);
-extern struct vm_area_struct *vma_merge(struct mm_struct *,
- struct vm_area_struct *prev, unsigned long addr, unsigned long end,
- unsigned long vm_flags, struct anon_vma *, struct file *, pgoff_t,
- struct mempolicy *);
-extern struct anon_vma *find_mergeable_anon_vma(struct vm_area_struct *);
-extern int split_vma(struct mm_struct *,
- struct vm_area_struct *, unsigned long addr, int new_below);
-extern int insert_vm_struct(struct mm_struct *, struct vm_area_struct *);
-extern void __vma_link_rb(struct mm_struct *, struct vm_area_struct *,
- struct rb_node **, struct rb_node *);
-extern struct vm_area_struct *copy_vma(struct vm_area_struct **,
- unsigned long addr, unsigned long len, pgoff_t pgoff);
-extern void exit_mmap(struct mm_struct *);
-
-extern unsigned long get_unmapped_area(struct file *, unsigned long, unsigned
long, unsigned long, unsigned long);
-
-extern unsigned long do_mmap_pgoff(struct file *file, unsigned long addr,
- unsigned long len, unsigned long prot,
- unsigned long flag, unsigned long pgoff);
-
-static inline unsigned long do_mmap(struct file *file, unsigned long addr,
- unsigned long len, unsigned long prot,
- unsigned long flag, unsigned long offset)
-{
- unsigned long ret = -EINVAL;
- if ((offset + PAGE_ALIGN(len)) < offset)
- goto out;
- if (!(offset & ~PAGE_MASK))
- ret = do_mmap_pgoff(file, addr, len, prot, flag, offset >>
PAGE_SHIFT);
-out:
- return ret;
-}
-
-extern int do_munmap(struct mm_struct *, unsigned long, size_t);
-
-extern unsigned long do_brk(unsigned long, unsigned long);
-
-/* filemap.c */
-extern unsigned long page_unuse(struct page *);
-extern void truncate_inode_pages(struct address_space *, loff_t);
-
-/* generic vm_area_ops exported for stackable file systems */
-extern struct page *filemap_nopage(struct vm_area_struct *, unsigned long, int
*);
-extern int filemap_populate(struct vm_area_struct *, unsigned long,
- unsigned long, pgprot_t, unsigned long, int);
-
-/* mm/page-writeback.c */
-int write_one_page(struct page *page, int wait);
-
-/* readahead.c */
-#define VM_MAX_READAHEAD 128 /* kbytes */
-#define VM_MIN_READAHEAD 16 /* kbytes (includes current page) */
-#define VM_MAX_CACHE_HIT 256 /* max pages in a row in cache before
- * turning readahead off */
-
-int do_page_cache_readahead(struct address_space *mapping, struct file *filp,
- unsigned long offset, unsigned long nr_to_read);
-int force_page_cache_readahead(struct address_space *mapping, struct file
*filp,
- unsigned long offset, unsigned long nr_to_read);
-unsigned long page_cache_readahead(struct address_space *mapping,
- struct file_ra_state *ra,
- struct file *filp,
- unsigned long offset,
- unsigned long size);
-void handle_ra_miss(struct address_space *mapping,
- struct file_ra_state *ra, pgoff_t offset);
-unsigned long max_sane_readahead(unsigned long nr);
-
-/* Do stack extension */
-extern int expand_stack(struct vm_area_struct * vma, unsigned long address);
-
-/* Look up the first VMA which satisfies addr < vm_end, NULL if none. */
-extern struct vm_area_struct * find_vma(struct mm_struct * mm, unsigned long
addr);
-extern struct vm_area_struct * find_vma_prev(struct mm_struct * mm, unsigned
long addr,
- struct vm_area_struct **pprev);
-
-/* Look up the first VMA which intersects the interval start_addr..end_addr-1,
- NULL if none. Assume start_addr < end_addr. */
-static inline struct vm_area_struct * find_vma_intersection(struct mm_struct *
mm, unsigned long start_addr, unsigned long end_addr)
-{
- struct vm_area_struct * vma = find_vma(mm,start_addr);
-
- if (vma && end_addr <= vma->vm_start)
- vma = NULL;
- return vma;
-}
-
-static inline unsigned long vma_pages(struct vm_area_struct *vma)
-{
- return (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
-}
-
-extern struct vm_area_struct *find_extend_vma(struct mm_struct *mm, unsigned
long addr);
-
-extern struct page * vmalloc_to_page(void *addr);
-extern unsigned long vmalloc_to_pfn(void *addr);
-extern struct page * follow_page(struct mm_struct *mm, unsigned long address,
- int write);
-extern int check_user_page_readable(struct mm_struct *mm, unsigned long
address);
-int remap_pfn_range(struct vm_area_struct *, unsigned long,
- unsigned long, unsigned long, pgprot_t);
-/* Allow arch override for mapping of device and I/O (non-RAM) pages. */
-#ifndef io_remap_pfn_range
-#define io_remap_pfn_range remap_pfn_range
-#endif
-
-#ifdef CONFIG_PROC_FS
-void __vm_stat_account(struct mm_struct *, unsigned long, struct file *, long);
-#else
-static inline void __vm_stat_account(struct mm_struct *mm,
- unsigned long flags, struct file *file, long pages)
-{
-}
-#endif /* CONFIG_PROC_FS */
-
-static inline void vm_stat_account(struct vm_area_struct *vma)
-{
- __vm_stat_account(vma->vm_mm, vma->vm_flags, vma->vm_file,
- vma_pages(vma));
-}
-
-static inline void vm_stat_unaccount(struct vm_area_struct *vma)
-{
- __vm_stat_account(vma->vm_mm, vma->vm_flags, vma->vm_file,
- -vma_pages(vma));
-}
-
-/* update per process rss and vm hiwater data */
-extern void update_mem_hiwater(void);
-
-#ifndef CONFIG_DEBUG_PAGEALLOC
-static inline void
-kernel_map_pages(struct page *page, int numpages, int enable)
-{
-}
-#endif
-
-extern struct vm_area_struct *get_gate_vma(struct task_struct *tsk);
-#ifdef __HAVE_ARCH_GATE_AREA
-int in_gate_area_no_task(unsigned long addr);
-int in_gate_area(struct task_struct *task, unsigned long addr);
-#else
-int in_gate_area_no_task(unsigned long addr);
-#define in_gate_area(task, addr) ({(void)task; in_gate_area_no_task(addr);})
-#endif /* __HAVE_ARCH_GATE_AREA */
-
-#endif /* __KERNEL__ */
-#endif /* _LINUX_MM_H */
diff -r d75a502b45eb -r 43e28a2f6037
linux-2.6.11-xen-sparse/include/linux/skbuff.h
--- a/linux-2.6.11-xen-sparse/include/linux/skbuff.h Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,1184 +0,0 @@
-/*
- * Definitions for the 'struct sk_buff' memory handlers.
- *
- * Authors:
- * Alan Cox, <gw4pts@xxxxxxxxxxxxxxx>
- * Florian La Roche, <rzsfl@xxxxxxxxxxxx>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _LINUX_SKBUFF_H
-#define _LINUX_SKBUFF_H
-
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/compiler.h>
-#include <linux/time.h>
-#include <linux/cache.h>
-
-#include <asm/atomic.h>
-#include <asm/types.h>
-#include <linux/spinlock.h>
-#include <linux/mm.h>
-#include <linux/highmem.h>
-#include <linux/poll.h>
-#include <linux/net.h>
-#include <net/checksum.h>
-
-#define HAVE_ALLOC_SKB /* For the drivers to know */
-#define HAVE_ALIGNABLE_SKB /* Ditto 8) */
-#define SLAB_SKB /* Slabified skbuffs */
-
-#define CHECKSUM_NONE 0
-#define CHECKSUM_HW 1
-#define CHECKSUM_UNNECESSARY 2
-
-#define SKB_DATA_ALIGN(X) (((X) + (SMP_CACHE_BYTES - 1)) & \
- ~(SMP_CACHE_BYTES - 1))
-#define SKB_MAX_ORDER(X, ORDER) (((PAGE_SIZE << (ORDER)) - (X) - \
- sizeof(struct skb_shared_info)) & \
- ~(SMP_CACHE_BYTES - 1))
-#define SKB_MAX_HEAD(X) (SKB_MAX_ORDER((X), 0))
-#define SKB_MAX_ALLOC (SKB_MAX_ORDER(0, 2))
-
-/* A. Checksumming of received packets by device.
- *
- * NONE: device failed to checksum this packet.
- * skb->csum is undefined.
- *
- * UNNECESSARY: device parsed packet and wouldbe verified checksum.
- * skb->csum is undefined.
- * It is bad option, but, unfortunately, many of vendors do this.
- * Apparently with secret goal to sell you new device, when you
- * will add new protocol to your host. F.e. IPv6. 8)
- *
- * HW: the most generic way. Device supplied checksum of _all_
- * the packet as seen by netif_rx in skb->csum.
- * NOTE: Even if device supports only some protocols, but
- * is able to produce some skb->csum, it MUST use HW,
- * not UNNECESSARY.
- *
- * B. Checksumming on output.
- *
- * NONE: skb is checksummed by protocol or csum is not required.
- *
- * HW: device is required to csum packet as seen by hard_start_xmit
- * from skb->h.raw to the end and to record the checksum
- * at skb->h.raw+skb->csum.
- *
- * Device must show its capabilities in dev->features, set
- * at device setup time.
- * NETIF_F_HW_CSUM - it is clever device, it is able to checksum
- * everything.
- * NETIF_F_NO_CSUM - loopback or reliable single hop media.
- * NETIF_F_IP_CSUM - device is dumb. It is able to csum only
- * TCP/UDP over IPv4. Sigh. Vendors like this
- * way by an unknown reason. Though, see comment above
- * about CHECKSUM_UNNECESSARY. 8)
- *
- * Any questions? No questions, good. --ANK
- */
-
-#ifdef __i386__
-#define NET_CALLER(arg) (*(((void **)&arg) - 1))
-#else
-#define NET_CALLER(arg) __builtin_return_address(0)
-#endif
-
-struct net_device;
-
-#ifdef CONFIG_NETFILTER
-struct nf_conntrack {
- atomic_t use;
- void (*destroy)(struct nf_conntrack *);
-};
-
-#ifdef CONFIG_BRIDGE_NETFILTER
-struct nf_bridge_info {
- atomic_t use;
- struct net_device *physindev;
- struct net_device *physoutdev;
-#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
- struct net_device *netoutdev;
-#endif
- unsigned int mask;
- unsigned long data[32 / sizeof(unsigned long)];
-};
-#endif
-
-#endif
-
-struct sk_buff_head {
- /* These two members must be first. */
- struct sk_buff *next;
- struct sk_buff *prev;
-
- __u32 qlen;
- spinlock_t lock;
-};
-
-struct sk_buff;
-
-/* To allow 64K frame to be packed as single skb without frag_list */
-#define MAX_SKB_FRAGS (65536/PAGE_SIZE + 2)
-
-typedef struct skb_frag_struct skb_frag_t;
-
-struct skb_frag_struct {
- struct page *page;
- __u16 page_offset;
- __u16 size;
-};
-
-/* This data is invariant across clones and lives at
- * the end of the header data, ie. at skb->end.
- */
-struct skb_shared_info {
- atomic_t dataref;
- unsigned int nr_frags;
- unsigned short tso_size;
- unsigned short tso_segs;
- struct sk_buff *frag_list;
- skb_frag_t frags[MAX_SKB_FRAGS];
-};
-
-/**
- * struct sk_buff - socket buffer
- * @next: Next buffer in list
- * @prev: Previous buffer in list
- * @list: List we are on
- * @sk: Socket we are owned by
- * @stamp: Time we arrived
- * @dev: Device we arrived on/are leaving by
- * @input_dev: Device we arrived on
- * @real_dev: The real device we are using
- * @h: Transport layer header
- * @nh: Network layer header
- * @mac: Link layer header
- * @dst: FIXME: Describe this field
- * @cb: Control buffer. Free for use by every layer. Put private vars here
- * @len: Length of actual data
- * @data_len: Data length
- * @mac_len: Length of link layer header
- * @csum: Checksum
- * @__unused: Dead field, may be reused
- * @cloned: Head may be cloned (check refcnt to be sure)
- * @proto_csum_valid: Protocol csum validated since arriving at localhost
- * @proto_csum_blank: Protocol csum must be added before leaving localhost
- * @pkt_type: Packet class
- * @ip_summed: Driver fed us an IP checksum
- * @priority: Packet queueing priority
- * @users: User count - see {datagram,tcp}.c
- * @protocol: Packet protocol from driver
- * @security: Security level of packet
- * @truesize: Buffer size
- * @head: Head of buffer
- * @data: Data head pointer
- * @tail: Tail pointer
- * @end: End pointer
- * @destructor: Destruct function
- * @nfmark: Can be used for communication between hooks
- * @nfcache: Cache info
- * @nfct: Associated connection, if any
- * @nfctinfo: Relationship of this skb to the connection
- * @nf_debug: Netfilter debugging
- * @nf_bridge: Saved data about a bridged frame - see br_netfilter.c
- * @private: Data which is private to the HIPPI implementation
- * @tc_index: Traffic control index
- */
-
-struct sk_buff {
- /* These two members must be first. */
- struct sk_buff *next;
- struct sk_buff *prev;
-
- struct sk_buff_head *list;
- struct sock *sk;
- struct timeval stamp;
- struct net_device *dev;
- struct net_device *input_dev;
- struct net_device *real_dev;
-
- union {
- struct tcphdr *th;
- struct udphdr *uh;
- struct icmphdr *icmph;
- struct igmphdr *igmph;
- struct iphdr *ipiph;
- struct ipv6hdr *ipv6h;
- unsigned char *raw;
- } h;
-
- union {
- struct iphdr *iph;
- struct ipv6hdr *ipv6h;
- struct arphdr *arph;
- unsigned char *raw;
- } nh;
-
- union {
- unsigned char *raw;
- } mac;
-
- struct dst_entry *dst;
- struct sec_path *sp;
-
- /*
- * This is the control buffer. It is free to use for every
- * layer. Please put your private variables there. If you
- * want to keep them across layers you have to do a skb_clone()
- * first. This is owned by whoever has the skb queued ATM.
- */
- char cb[40];
-
- unsigned int len,
- data_len,
- mac_len,
- csum;
- unsigned char local_df,
- cloned:1,
- proto_csum_valid:1,
- proto_csum_blank:1,
- pkt_type,
- ip_summed;
- __u32 priority;
- unsigned short protocol,
- security;
-
- void (*destructor)(struct sk_buff *skb);
-#ifdef CONFIG_NETFILTER
- unsigned long nfmark;
- __u32 nfcache;
- __u32 nfctinfo;
- struct nf_conntrack *nfct;
-#ifdef CONFIG_NETFILTER_DEBUG
- unsigned int nf_debug;
-#endif
-#ifdef CONFIG_BRIDGE_NETFILTER
- struct nf_bridge_info *nf_bridge;
-#endif
-#endif /* CONFIG_NETFILTER */
-#if defined(CONFIG_HIPPI)
- union {
- __u32 ifield;
- } private;
-#endif
-#ifdef CONFIG_NET_SCHED
- __u32 tc_index; /* traffic control index */
-#ifdef CONFIG_NET_CLS_ACT
- __u32 tc_verd; /* traffic control verdict */
- __u32 tc_classid; /* traffic control classid */
-#endif
-
-#endif
-
-
- /* These elements must be at the end, see alloc_skb() for details. */
- unsigned int truesize;
- atomic_t users;
- unsigned char *head,
- *data,
- *tail,
- *end;
-};
-
-#ifdef __KERNEL__
-/*
- * Handling routines are only of interest to the kernel
- */
-#include <linux/slab.h>
-
-#include <asm/system.h>
-
-extern void __kfree_skb(struct sk_buff *skb);
-extern struct sk_buff *alloc_skb(unsigned int size, int priority);
-extern struct sk_buff *alloc_skb_from_cache(kmem_cache_t *cp,
- unsigned int size, int priority);
-extern void kfree_skbmem(struct sk_buff *skb);
-extern struct sk_buff *skb_clone(struct sk_buff *skb, int priority);
-extern struct sk_buff *skb_copy(const struct sk_buff *skb, int priority);
-extern struct sk_buff *pskb_copy(struct sk_buff *skb, int gfp_mask);
-extern int pskb_expand_head(struct sk_buff *skb,
- int nhead, int ntail, int gfp_mask);
-extern struct sk_buff *skb_realloc_headroom(struct sk_buff *skb,
- unsigned int headroom);
-extern struct sk_buff *skb_copy_expand(const struct sk_buff *skb,
- int newheadroom, int newtailroom,
- int priority);
-extern struct sk_buff * skb_pad(struct sk_buff *skb, int pad);
-#define dev_kfree_skb(a) kfree_skb(a)
-extern void skb_over_panic(struct sk_buff *skb, int len,
- void *here);
-extern void skb_under_panic(struct sk_buff *skb, int len,
- void *here);
-
-/* Internal */
-#define skb_shinfo(SKB) ((struct skb_shared_info *)((SKB)->end))
-
-/**
- * skb_queue_empty - check if a queue is empty
- * @list: queue head
- *
- * Returns true if the queue is empty, false otherwise.
- */
-static inline int skb_queue_empty(const struct sk_buff_head *list)
-{
- return list->next == (struct sk_buff *)list;
-}
-
-/**
- * skb_get - reference buffer
- * @skb: buffer to reference
- *
- * Makes another reference to a socket buffer and returns a pointer
- * to the buffer.
- */
-static inline struct sk_buff *skb_get(struct sk_buff *skb)
-{
- atomic_inc(&skb->users);
- return skb;
-}
-
-/*
- * If users == 1, we are the only owner and are can avoid redundant
- * atomic change.
- */
-
-/**
- * kfree_skb - free an sk_buff
- * @skb: buffer to free
- *
- * Drop a reference to the buffer and free it if the usage count has
- * hit zero.
- */
-static inline void kfree_skb(struct sk_buff *skb)
-{
- if (likely(atomic_read(&skb->users) == 1))
- smp_rmb();
- else if (likely(!atomic_dec_and_test(&skb->users)))
- return;
- __kfree_skb(skb);
-}
-
-/**
- * skb_cloned - is the buffer a clone
- * @skb: buffer to check
- *
- * Returns true if the buffer was generated with skb_clone() and is
- * one of multiple shared copies of the buffer. Cloned buffers are
- * shared data so must not be written to under normal circumstances.
- */
-static inline int skb_cloned(const struct sk_buff *skb)
-{
- return skb->cloned && atomic_read(&skb_shinfo(skb)->dataref) != 1;
-}
-
-/**
- * skb_shared - is the buffer shared
- * @skb: buffer to check
- *
- * Returns true if more than one person has a reference to this
- * buffer.
- */
-static inline int skb_shared(const struct sk_buff *skb)
-{
- return atomic_read(&skb->users) != 1;
-}
-
-/**
- * skb_share_check - check if buffer is shared and if so clone it
- * @skb: buffer to check
- * @pri: priority for memory allocation
- *
- * If the buffer is shared the buffer is cloned and the old copy
- * drops a reference. A new clone with a single reference is returned.
- * If the buffer is not shared the original buffer is returned. When
- * being called from interrupt status or with spinlocks held pri must
- * be GFP_ATOMIC.
- *
- * NULL is returned on a memory allocation failure.
- */
-static inline struct sk_buff *skb_share_check(struct sk_buff *skb, int pri)
-{
- might_sleep_if(pri & __GFP_WAIT);
- if (skb_shared(skb)) {
- struct sk_buff *nskb = skb_clone(skb, pri);
- kfree_skb(skb);
- skb = nskb;
- }
- return skb;
-}
-
-/*
- * Copy shared buffers into a new sk_buff. We effectively do COW on
- * packets to handle cases where we have a local reader and forward
- * and a couple of other messy ones. The normal one is tcpdumping
- * a packet thats being forwarded.
- */
-
-/**
- * skb_unshare - make a copy of a shared buffer
- * @skb: buffer to check
- * @pri: priority for memory allocation
- *
- * If the socket buffer is a clone then this function creates a new
- * copy of the data, drops a reference count on the old copy and returns
- * the new copy with the reference count at 1. If the buffer is not a clone
- * the original buffer is returned. When called with a spinlock held or
- * from interrupt state @pri must be %GFP_ATOMIC
- *
- * %NULL is returned on a memory allocation failure.
- */
-static inline struct sk_buff *skb_unshare(struct sk_buff *skb, int pri)
-{
- might_sleep_if(pri & __GFP_WAIT);
- if (skb_cloned(skb)) {
- struct sk_buff *nskb = skb_copy(skb, pri);
- kfree_skb(skb); /* Free our shared copy */
- skb = nskb;
- }
- return skb;
-}
-
-/**
- * skb_peek
- * @list_: list to peek at
- *
- * Peek an &sk_buff. Unlike most other operations you _MUST_
- * be careful with this one. A peek leaves the buffer on the
- * list and someone else may run off with it. You must hold
- * the appropriate locks or have a private queue to do this.
- *
- * Returns %NULL for an empty list or a pointer to the head element.
- * The reference count is not incremented and the reference is therefore
- * volatile. Use with caution.
- */
-static inline struct sk_buff *skb_peek(struct sk_buff_head *list_)
-{
- struct sk_buff *list = ((struct sk_buff *)list_)->next;
- if (list == (struct sk_buff *)list_)
- list = NULL;
- return list;
-}
-
-/**
- * skb_peek_tail
- * @list_: list to peek at
- *
- * Peek an &sk_buff. Unlike most other operations you _MUST_
- * be careful with this one. A peek leaves the buffer on the
- * list and someone else may run off with it. You must hold
- * the appropriate locks or have a private queue to do this.
- *
- * Returns %NULL for an empty list or a pointer to the tail element.
- * The reference count is not incremented and the reference is therefore
- * volatile. Use with caution.
- */
-static inline struct sk_buff *skb_peek_tail(struct sk_buff_head *list_)
-{
- struct sk_buff *list = ((struct sk_buff *)list_)->prev;
- if (list == (struct sk_buff *)list_)
- list = NULL;
- return list;
-}
-
-/**
- * skb_queue_len - get queue length
- * @list_: list to measure
- *
- * Return the length of an &sk_buff queue.
- */
-static inline __u32 skb_queue_len(const struct sk_buff_head *list_)
-{
- return list_->qlen;
-}
-
-static inline void skb_queue_head_init(struct sk_buff_head *list)
-{
- spin_lock_init(&list->lock);
- list->prev = list->next = (struct sk_buff *)list;
- list->qlen = 0;
-}
-
-/*
- * Insert an sk_buff at the start of a list.
- *
- * The "__skb_xxxx()" functions are the non-atomic ones that
- * can only be called with interrupts disabled.
- */
-
-/**
- * __skb_queue_head - queue a buffer at the list head
- * @list: list to use
- * @newsk: buffer to queue
- *
- * Queue a buffer at the start of a list. This function takes no locks
- * and you must therefore hold required locks before calling it.
- *
- * A buffer cannot be placed on two lists at the same time.
- */
-extern void skb_queue_head(struct sk_buff_head *list, struct sk_buff *newsk);
-static inline void __skb_queue_head(struct sk_buff_head *list,
- struct sk_buff *newsk)
-{
- struct sk_buff *prev, *next;
-
- newsk->list = list;
- list->qlen++;
- prev = (struct sk_buff *)list;
- next = prev->next;
- newsk->next = next;
- newsk->prev = prev;
- next->prev = prev->next = newsk;
-}
-
-/**
- * __skb_queue_tail - queue a buffer at the list tail
- * @list: list to use
- * @newsk: buffer to queue
- *
- * Queue a buffer at the end of a list. This function takes no locks
- * and you must therefore hold required locks before calling it.
- *
- * A buffer cannot be placed on two lists at the same time.
- */
-extern void skb_queue_tail(struct sk_buff_head *list, struct sk_buff *newsk);
-static inline void __skb_queue_tail(struct sk_buff_head *list,
- struct sk_buff *newsk)
-{
- struct sk_buff *prev, *next;
-
- newsk->list = list;
- list->qlen++;
- next = (struct sk_buff *)list;
- prev = next->prev;
- newsk->next = next;
- newsk->prev = prev;
- next->prev = prev->next = newsk;
-}
-
-
-/**
- * __skb_dequeue - remove from the head of the queue
- * @list: list to dequeue from
- *
- * Remove the head of the list. This function does not take any locks
- * so must be used with appropriate locks held only. The head item is
- * returned or %NULL if the list is empty.
- */
-extern struct sk_buff *skb_dequeue(struct sk_buff_head *list);
-static inline struct sk_buff *__skb_dequeue(struct sk_buff_head *list)
-{
- struct sk_buff *next, *prev, *result;
-
- prev = (struct sk_buff *) list;
- next = prev->next;
- result = NULL;
- if (next != prev) {
- result = next;
- next = next->next;
- list->qlen--;
- next->prev = prev;
- prev->next = next;
- result->next = result->prev = NULL;
- result->list = NULL;
- }
- return result;
-}
-
-
-/*
- * Insert a packet on a list.
- */
-extern void skb_insert(struct sk_buff *old, struct sk_buff *newsk);
-static inline void __skb_insert(struct sk_buff *newsk,
- struct sk_buff *prev, struct sk_buff *next,
- struct sk_buff_head *list)
-{
- newsk->next = next;
- newsk->prev = prev;
- next->prev = prev->next = newsk;
- newsk->list = list;
- list->qlen++;
-}
-
-/*
- * Place a packet after a given packet in a list.
- */
-extern void skb_append(struct sk_buff *old, struct sk_buff *newsk);
-static inline void __skb_append(struct sk_buff *old, struct sk_buff *newsk)
-{
- __skb_insert(newsk, old, old->next, old->list);
-}
-
-/*
- * remove sk_buff from list. _Must_ be called atomically, and with
- * the list known..
- */
-extern void skb_unlink(struct sk_buff *skb);
-static inline void __skb_unlink(struct sk_buff *skb, struct sk_buff_head *list)
-{
- struct sk_buff *next, *prev;
-
- list->qlen--;
- next = skb->next;
- prev = skb->prev;
- skb->next = skb->prev = NULL;
- skb->list = NULL;
- next->prev = prev;
- prev->next = next;
-}
-
-
-/* XXX: more streamlined implementation */
-
-/**
- * __skb_dequeue_tail - remove from the tail of the queue
- * @list: list to dequeue from
- *
- * Remove the tail of the list. This function does not take any locks
- * so must be used with appropriate locks held only. The tail item is
- * returned or %NULL if the list is empty.
- */
-extern struct sk_buff *skb_dequeue_tail(struct sk_buff_head *list);
-static inline struct sk_buff *__skb_dequeue_tail(struct sk_buff_head *list)
-{
- struct sk_buff *skb = skb_peek_tail(list);
- if (skb)
- __skb_unlink(skb, list);
- return skb;
-}
-
-
-static inline int skb_is_nonlinear(const struct sk_buff *skb)
-{
- return skb->data_len;
-}
-
-static inline unsigned int skb_headlen(const struct sk_buff *skb)
-{
- return skb->len - skb->data_len;
-}
-
-static inline int skb_pagelen(const struct sk_buff *skb)
-{
- int i, len = 0;
-
- for (i = (int)skb_shinfo(skb)->nr_frags - 1; i >= 0; i--)
- len += skb_shinfo(skb)->frags[i].size;
- return len + skb_headlen(skb);
-}
-
-static inline void skb_fill_page_desc(struct sk_buff *skb, int i,
- struct page *page, int off, int size)
-{
- skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
-
- frag->page = page;
- frag->page_offset = off;
- frag->size = size;
- skb_shinfo(skb)->nr_frags = i + 1;
-}
-
-#define SKB_PAGE_ASSERT(skb) BUG_ON(skb_shinfo(skb)->nr_frags)
-#define SKB_FRAG_ASSERT(skb) BUG_ON(skb_shinfo(skb)->frag_list)
-#define SKB_LINEAR_ASSERT(skb) BUG_ON(skb_is_nonlinear(skb))
-
-/*
- * Add data to an sk_buff
- */
-static inline unsigned char *__skb_put(struct sk_buff *skb, unsigned int len)
-{
- unsigned char *tmp = skb->tail;
- SKB_LINEAR_ASSERT(skb);
- skb->tail += len;
- skb->len += len;
- return tmp;
-}
-
-/**
- * skb_put - add data to a buffer
- * @skb: buffer to use
- * @len: amount of data to add
- *
- * This function extends the used data area of the buffer. If this would
- * exceed the total buffer size the kernel will panic. A pointer to the
- * first byte of the extra data is returned.
- */
-static inline unsigned char *skb_put(struct sk_buff *skb, unsigned int len)
-{
- unsigned char *tmp = skb->tail;
- SKB_LINEAR_ASSERT(skb);
- skb->tail += len;
- skb->len += len;
- if (unlikely(skb->tail>skb->end))
- skb_over_panic(skb, len, current_text_addr());
- return tmp;
-}
-
-static inline unsigned char *__skb_push(struct sk_buff *skb, unsigned int len)
-{
- skb->data -= len;
- skb->len += len;
- return skb->data;
-}
-
-/**
- * skb_push - add data to the start of a buffer
- * @skb: buffer to use
- * @len: amount of data to add
- *
- * This function extends the used data area of the buffer at the buffer
- * start. If this would exceed the total buffer headroom the kernel will
- * panic. A pointer to the first byte of the extra data is returned.
- */
-static inline unsigned char *skb_push(struct sk_buff *skb, unsigned int len)
-{
- skb->data -= len;
- skb->len += len;
- if (unlikely(skb->data<skb->head))
- skb_under_panic(skb, len, current_text_addr());
- return skb->data;
-}
-
-static inline unsigned char *__skb_pull(struct sk_buff *skb, unsigned int len)
-{
- skb->len -= len;
- BUG_ON(skb->len < skb->data_len);
- return skb->data += len;
-}
-
-/**
- * skb_pull - remove data from the start of a buffer
- * @skb: buffer to use
- * @len: amount of data to remove
- *
- * This function removes data from the start of a buffer, returning
- * the memory to the headroom. A pointer to the next data in the buffer
- * is returned. Once the data has been pulled future pushes will overwrite
- * the old data.
- */
-static inline unsigned char *skb_pull(struct sk_buff *skb, unsigned int len)
-{
- return unlikely(len > skb->len) ? NULL : __skb_pull(skb, len);
-}
-
-extern unsigned char *__pskb_pull_tail(struct sk_buff *skb, int delta);
-
-static inline unsigned char *__pskb_pull(struct sk_buff *skb, unsigned int len)
-{
- if (len > skb_headlen(skb) &&
- !__pskb_pull_tail(skb, len-skb_headlen(skb)))
- return NULL;
- skb->len -= len;
- return skb->data += len;
-}
-
-static inline unsigned char *pskb_pull(struct sk_buff *skb, unsigned int len)
-{
- return unlikely(len > skb->len) ? NULL : __pskb_pull(skb, len);
-}
-
-static inline int pskb_may_pull(struct sk_buff *skb, unsigned int len)
-{
- if (likely(len <= skb_headlen(skb)))
- return 1;
- if (unlikely(len > skb->len))
- return 0;
- return __pskb_pull_tail(skb, len-skb_headlen(skb)) != NULL;
-}
-
-/**
- * skb_headroom - bytes at buffer head
- * @skb: buffer to check
- *
- * Return the number of bytes of free space at the head of an &sk_buff.
- */
-static inline int skb_headroom(const struct sk_buff *skb)
-{
- return skb->data - skb->head;
-}
-
-/**
- * skb_tailroom - bytes at buffer end
- * @skb: buffer to check
- *
- * Return the number of bytes of free space at the tail of an sk_buff
- */
-static inline int skb_tailroom(const struct sk_buff *skb)
-{
- return skb_is_nonlinear(skb) ? 0 : skb->end - skb->tail;
-}
-
-/**
- * skb_reserve - adjust headroom
- * @skb: buffer to alter
- * @len: bytes to move
- *
- * Increase the headroom of an empty &sk_buff by reducing the tail
- * room. This is only allowed for an empty buffer.
- */
-static inline void skb_reserve(struct sk_buff *skb, unsigned int len)
-{
- skb->data += len;
- skb->tail += len;
-}
-
-/*
- * CPUs often take a performance hit when accessing unaligned memory
- * locations. The actual performance hit varies, it can be small if the
- * hardware handles it or large if we have to take an exception and fix it
- * in software.
- *
- * Since an ethernet header is 14 bytes network drivers often end up with
- * the IP header at an unaligned offset. The IP header can be aligned by
- * shifting the start of the packet by 2 bytes. Drivers should do this
- * with:
- *
- * skb_reserve(NET_IP_ALIGN);
- *
- * The downside to this alignment of the IP header is that the DMA is now
- * unaligned. On some architectures the cost of an unaligned DMA is high
- * and this cost outweighs the gains made by aligning the IP header.
- *
- * Since this trade off varies between architectures, we allow NET_IP_ALIGN
- * to be overridden.
- */
-#ifndef NET_IP_ALIGN
-#define NET_IP_ALIGN 2
-#endif
-
-extern int ___pskb_trim(struct sk_buff *skb, unsigned int len, int realloc);
-
-static inline void __skb_trim(struct sk_buff *skb, unsigned int len)
-{
- if (!skb->data_len) {
- skb->len = len;
- skb->tail = skb->data + len;
- } else
- ___pskb_trim(skb, len, 0);
-}
-
-/**
- * skb_trim - remove end from a buffer
- * @skb: buffer to alter
- * @len: new length
- *
- * Cut the length of a buffer down by removing data from the tail. If
- * the buffer is already under the length specified it is not modified.
- */
-static inline void skb_trim(struct sk_buff *skb, unsigned int len)
-{
- if (skb->len > len)
- __skb_trim(skb, len);
-}
-
-
-static inline int __pskb_trim(struct sk_buff *skb, unsigned int len)
-{
- if (!skb->data_len) {
- skb->len = len;
- skb->tail = skb->data+len;
- return 0;
- }
- return ___pskb_trim(skb, len, 1);
-}
-
-static inline int pskb_trim(struct sk_buff *skb, unsigned int len)
-{
- return (len < skb->len) ? __pskb_trim(skb, len) : 0;
-}
-
-/**
- * skb_orphan - orphan a buffer
- * @skb: buffer to orphan
- *
- * If a buffer currently has an owner then we call the owner's
- * destructor function and make the @skb unowned. The buffer continues
- * to exist but is no longer charged to its former owner.
- */
-static inline void skb_orphan(struct sk_buff *skb)
-{
- if (skb->destructor)
- skb->destructor(skb);
- skb->destructor = NULL;
- skb->sk = NULL;
-}
-
-/**
- * __skb_queue_purge - empty a list
- * @list: list to empty
- *
- * Delete all buffers on an &sk_buff list. Each buffer is removed from
- * the list and one reference dropped. This function does not take the
- * list lock and the caller must hold the relevant locks to use it.
- */
-extern void skb_queue_purge(struct sk_buff_head *list);
-static inline void __skb_queue_purge(struct sk_buff_head *list)
-{
- struct sk_buff *skb;
- while ((skb = __skb_dequeue(list)) != NULL)
- kfree_skb(skb);
-}
-
-/**
- * __dev_alloc_skb - allocate an skbuff for sending
- * @length: length to allocate
- * @gfp_mask: get_free_pages mask, passed to alloc_skb
- *
- * Allocate a new &sk_buff and assign it a usage count of one. The
- * buffer has unspecified headroom built in. Users should allocate
- * the headroom they think they need without accounting for the
- * built in space. The built in space is used for optimisations.
- *
- * %NULL is returned in there is no free memory.
- */
-#ifndef CONFIG_HAVE_ARCH_DEV_ALLOC_SKB
-static inline struct sk_buff *__dev_alloc_skb(unsigned int length,
- int gfp_mask)
-{
- struct sk_buff *skb = alloc_skb(length + 16, gfp_mask);
- if (likely(skb))
- skb_reserve(skb, 16);
- return skb;
-}
-#else
-extern struct sk_buff *__dev_alloc_skb(unsigned int length, int gfp_mask);
-#endif
-
-/**
- * dev_alloc_skb - allocate an skbuff for sending
- * @length: length to allocate
- *
- * Allocate a new &sk_buff and assign it a usage count of one. The
- * buffer has unspecified headroom built in. Users should allocate
- * the headroom they think they need without accounting for the
- * built in space. The built in space is used for optimisations.
- *
- * %NULL is returned in there is no free memory. Although this function
- * allocates memory it can be called from an interrupt.
- */
-static inline struct sk_buff *dev_alloc_skb(unsigned int length)
-{
- return __dev_alloc_skb(length, GFP_ATOMIC);
-}
-
-/**
- * skb_cow - copy header of skb when it is required
- * @skb: buffer to cow
- * @headroom: needed headroom
- *
- * If the skb passed lacks sufficient headroom or its data part
- * is shared, data is reallocated. If reallocation fails, an error
- * is returned and original skb is not changed.
- *
- * The result is skb with writable area skb->head...skb->tail
- * and at least @headroom of space at head.
- */
-static inline int skb_cow(struct sk_buff *skb, unsigned int headroom)
-{
- int delta = (headroom > 16 ? headroom : 16) - skb_headroom(skb);
-
- if (delta < 0)
- delta = 0;
-
- if (delta || skb_cloned(skb))
- return pskb_expand_head(skb, (delta + 15) & ~15, 0, GFP_ATOMIC);
- return 0;
-}
-
-/**
- * skb_padto - pad an skbuff up to a minimal size
- * @skb: buffer to pad
- * @len: minimal length
- *
- * Pads up a buffer to ensure the trailing bytes exist and are
- * blanked. If the buffer already contains sufficient data it
- * is untouched. Returns the buffer, which may be a replacement
- * for the original, or NULL for out of memory - in which case
- * the original buffer is still freed.
- */
-
-static inline struct sk_buff *skb_padto(struct sk_buff *skb, unsigned int len)
-{
- unsigned int size = skb->len;
- if (likely(size >= len))
- return skb;
- return skb_pad(skb, len-size);
-}
-
-static inline int skb_add_data(struct sk_buff *skb,
- char __user *from, int copy)
-{
- const int off = skb->len;
-
- if (skb->ip_summed == CHECKSUM_NONE) {
- int err = 0;
- unsigned int csum = csum_and_copy_from_user(from,
- skb_put(skb, copy),
- copy, 0, &err);
- if (!err) {
- skb->csum = csum_block_add(skb->csum, csum, off);
- return 0;
- }
- } else if (!copy_from_user(skb_put(skb, copy), from, copy))
- return 0;
-
- __skb_trim(skb, off);
- return -EFAULT;
-}
-
-static inline int skb_can_coalesce(struct sk_buff *skb, int i,
- struct page *page, int off)
-{
- if (i) {
- struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i - 1];
-
- return page == frag->page &&
- off == frag->page_offset + frag->size;
- }
- return 0;
-}
-
-/**
- * skb_linearize - convert paged skb to linear one
- * @skb: buffer to linarize
- * @gfp: allocation mode
- *
- * If there is no free memory -ENOMEM is returned, otherwise zero
- * is returned and the old skb data released.
- */
-extern int __skb_linearize(struct sk_buff *skb, int gfp);
-static inline int skb_linearize(struct sk_buff *skb, int gfp)
-{
- return __skb_linearize(skb, gfp);
-}
-
-static inline void *kmap_skb_frag(const skb_frag_t *frag)
-{
-#ifdef CONFIG_HIGHMEM
- BUG_ON(in_irq());
-
- local_bh_disable();
-#endif
- return kmap_atomic(frag->page, KM_SKB_DATA_SOFTIRQ);
-}
-
-static inline void kunmap_skb_frag(void *vaddr)
-{
- kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ);
-#ifdef CONFIG_HIGHMEM
- local_bh_enable();
-#endif
-}
-
-#define skb_queue_walk(queue, skb) \
- for (skb = (queue)->next;
\
- prefetch(skb->next), (skb != (struct sk_buff *)(queue));
\
- skb = skb->next)
-
-
-extern struct sk_buff *skb_recv_datagram(struct sock *sk, unsigned flags,
- int noblock, int *err);
-extern unsigned int datagram_poll(struct file *file, struct socket *sock,
- struct poll_table_struct *wait);
-extern int skb_copy_datagram_iovec(const struct sk_buff *from,
- int offset, struct iovec *to,
- int size);
-extern int skb_copy_and_csum_datagram_iovec(const
- struct sk_buff *skb,
- int hlen,
- struct iovec *iov);
-extern void skb_free_datagram(struct sock *sk, struct sk_buff *skb);
-extern unsigned int skb_checksum(const struct sk_buff *skb, int offset,
- int len, unsigned int csum);
-extern int skb_copy_bits(const struct sk_buff *skb, int offset,
- void *to, int len);
-extern unsigned int skb_copy_and_csum_bits(const struct sk_buff *skb,
- int offset, u8 *to, int len,
- unsigned int csum);
-extern void skb_copy_and_csum_dev(const struct sk_buff *skb, u8 *to);
-extern void skb_split(struct sk_buff *skb,
- struct sk_buff *skb1, const u32 len);
-
-static inline void *skb_header_pointer(const struct sk_buff *skb, int offset,
- int len, void *buffer)
-{
- int hlen = skb_headlen(skb);
-
- if (offset + len <= hlen)
- return skb->data + offset;
-
- if (skb_copy_bits(skb, offset, buffer, len) < 0)
- return NULL;
-
- return buffer;
-}
-
-extern void skb_init(void);
-extern void skb_add_mtu(int mtu);
-
-struct skb_iter {
- /* Iteration functions set these */
- unsigned char *data;
- unsigned int len;
-
- /* Private to iteration */
- unsigned int nextfrag;
- struct sk_buff *fraglist;
-};
-
-/* Keep iterating until skb_iter_next returns false. */
-extern void skb_iter_first(const struct sk_buff *skb, struct skb_iter *i);
-extern int skb_iter_next(const struct sk_buff *skb, struct skb_iter *i);
-/* Call this if aborting loop before !skb_iter_next */
-extern void skb_iter_abort(const struct sk_buff *skb, struct skb_iter *i);
-
-#ifdef CONFIG_NETFILTER
-static inline void nf_conntrack_put(struct nf_conntrack *nfct)
-{
- if (nfct && atomic_dec_and_test(&nfct->use))
- nfct->destroy(nfct);
-}
-static inline void nf_conntrack_get(struct nf_conntrack *nfct)
-{
- if (nfct)
- atomic_inc(&nfct->use);
-}
-static inline void nf_reset(struct sk_buff *skb)
-{
- nf_conntrack_put(skb->nfct);
- skb->nfct = NULL;
-#ifdef CONFIG_NETFILTER_DEBUG
- skb->nf_debug = 0;
-#endif
-}
-static inline void nf_reset_debug(struct sk_buff *skb)
-{
-#ifdef CONFIG_NETFILTER_DEBUG
- skb->nf_debug = 0;
-#endif
-}
-
-#ifdef CONFIG_BRIDGE_NETFILTER
-static inline void nf_bridge_put(struct nf_bridge_info *nf_bridge)
-{
- if (nf_bridge && atomic_dec_and_test(&nf_bridge->use))
- kfree(nf_bridge);
-}
-static inline void nf_bridge_get(struct nf_bridge_info *nf_bridge)
-{
- if (nf_bridge)
- atomic_inc(&nf_bridge->use);
-}
-#endif /* CONFIG_BRIDGE_NETFILTER */
-#else /* CONFIG_NETFILTER */
-static inline void nf_reset(struct sk_buff *skb) {}
-#endif /* CONFIG_NETFILTER */
-
-#endif /* __KERNEL__ */
-#endif /* _LINUX_SKBUFF_H */
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.6.11-xen-sparse/kernel/irq/manage.c
--- a/linux-2.6.11-xen-sparse/kernel/irq/manage.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,392 +0,0 @@
-/*
- * linux/kernel/irq/manage.c
- *
- * Copyright (C) 1992, 1998-2004 Linus Torvalds, Ingo Molnar
- *
- * This file contains driver APIs to the irq subsystem.
- */
-
-#include <linux/irq.h>
-#include <linux/module.h>
-#include <linux/random.h>
-#include <linux/interrupt.h>
-
-#include "internals.h"
-
-#ifdef CONFIG_SMP
-
-cpumask_t irq_affinity[NR_IRQS] = { [0 ... NR_IRQS-1] = CPU_MASK_ALL };
-
-/**
- * synchronize_irq - wait for pending IRQ handlers (on other CPUs)
- *
- * This function waits for any pending IRQ handlers for this interrupt
- * to complete before returning. If you use this function while
- * holding a resource the IRQ handler may need you will deadlock.
- *
- * This function may be called - with care - from IRQ context.
- */
-void synchronize_irq(unsigned int irq)
-{
- struct irq_desc *desc = irq_desc + irq;
-
- while (desc->status & IRQ_INPROGRESS)
- cpu_relax();
-}
-
-EXPORT_SYMBOL(synchronize_irq);
-
-#endif
-
-/**
- * disable_irq_nosync - disable an irq without waiting
- * @irq: Interrupt to disable
- *
- * Disable the selected interrupt line. Disables and Enables are
- * nested.
- * Unlike disable_irq(), this function does not ensure existing
- * instances of the IRQ handler have completed before returning.
- *
- * This function may be called from IRQ context.
- */
-void disable_irq_nosync(unsigned int irq)
-{
- irq_desc_t *desc = irq_desc + irq;
- unsigned long flags;
-
- spin_lock_irqsave(&desc->lock, flags);
- if (!desc->depth++) {
- desc->status |= IRQ_DISABLED;
- desc->handler->disable(irq);
- }
- spin_unlock_irqrestore(&desc->lock, flags);
-}
-
-EXPORT_SYMBOL(disable_irq_nosync);
-
-/**
- * disable_irq - disable an irq and wait for completion
- * @irq: Interrupt to disable
- *
- * Disable the selected interrupt line. Enables and Disables are
- * nested.
- * This function waits for any pending IRQ handlers for this interrupt
- * to complete before returning. If you use this function while
- * holding a resource the IRQ handler may need you will deadlock.
- *
- * This function may be called - with care - from IRQ context.
- */
-void disable_irq(unsigned int irq)
-{
- irq_desc_t *desc = irq_desc + irq;
-
- disable_irq_nosync(irq);
- if (desc->action)
- synchronize_irq(irq);
-}
-
-EXPORT_SYMBOL(disable_irq);
-
-/**
- * enable_irq - enable handling of an irq
- * @irq: Interrupt to enable
- *
- * Undoes the effect of one call to disable_irq(). If this
- * matches the last disable, processing of interrupts on this
- * IRQ line is re-enabled.
- *
- * This function may be called from IRQ context.
- */
-void enable_irq(unsigned int irq)
-{
- irq_desc_t *desc = irq_desc + irq;
- unsigned long flags;
-
- spin_lock_irqsave(&desc->lock, flags);
- switch (desc->depth) {
- case 0:
- WARN_ON(1);
- break;
- case 1: {
- unsigned int status = desc->status & ~IRQ_DISABLED;
-
- desc->status = status;
- if ((status & (IRQ_PENDING | IRQ_REPLAY)) == IRQ_PENDING) {
- desc->status = status | IRQ_REPLAY;
- hw_resend_irq(desc->handler,irq);
- }
- desc->handler->enable(irq);
- /* fall-through */
- }
- default:
- desc->depth--;
- }
- spin_unlock_irqrestore(&desc->lock, flags);
-}
-
-EXPORT_SYMBOL(enable_irq);
-
-/*
- * Internal function that tells the architecture code whether a
- * particular irq has been exclusively allocated or is available
- * for driver use.
- */
-int can_request_irq(unsigned int irq, unsigned long irqflags)
-{
- struct irqaction *action;
-
- if (irq >= NR_IRQS)
- return 0;
-
- action = irq_desc[irq].action;
- if (action)
- if (irqflags & action->flags & SA_SHIRQ)
- action = NULL;
-
- return !action;
-}
-
-/**
- * setup_irq - register an irqaction structure
- * @irq: Interrupt to register
- * @irqaction: The irqaction structure to be registered
- *
- * Normally called by request_irq, this function can be used
- * directly to allocate special interrupts that are part of the
- * architecture.
- */
-int setup_irq(unsigned int irq, struct irqaction * new)
-{
- struct irq_desc *desc = irq_desc + irq;
- struct irqaction *old, **p;
- unsigned long flags;
- int shared = 0;
-
- if (desc->handler == &no_irq_type)
- return -ENOSYS;
- /*
- * Some drivers like serial.c use request_irq() heavily,
- * so we have to be careful not to interfere with a
- * running system.
- */
- if (new->flags & SA_SAMPLE_RANDOM) {
- /*
- * This function might sleep, we want to call it first,
- * outside of the atomic block.
- * Yes, this might clear the entropy pool if the wrong
- * driver is attempted to be loaded, without actually
- * installing a new handler, but is this really a problem,
- * only the sysadmin is able to do this.
- */
- rand_initialize_irq(irq);
- }
-
- /*
- * The following block of code has to be executed atomically
- */
- spin_lock_irqsave(&desc->lock,flags);
- p = &desc->action;
- if ((old = *p) != NULL) {
- /* Can't share interrupts unless both agree to */
- if (!(old->flags & new->flags & SA_SHIRQ)) {
- spin_unlock_irqrestore(&desc->lock,flags);
- return -EBUSY;
- }
-
- /* add new interrupt at end of irq queue */
- do {
- p = &old->next;
- old = *p;
- } while (old);
- shared = 1;
- }
-
- *p = new;
-
- if (!shared) {
- desc->depth = 0;
- desc->status &= ~(IRQ_DISABLED | IRQ_AUTODETECT |
- IRQ_WAITING | IRQ_INPROGRESS);
- if (desc->handler->startup)
- desc->handler->startup(irq);
- else
- desc->handler->enable(irq);
- }
- spin_unlock_irqrestore(&desc->lock,flags);
-
- new->irq = irq;
- register_irq_proc(irq);
- new->dir = NULL;
- register_handler_proc(irq, new);
-
- return 0;
-}
-
-/*
- * teardown_irq - unregister an irqaction
- * @irq: Interrupt line being freed
- * @old: Pointer to the irqaction that is to be unregistered
- *
- * This function is called by free_irq and does the actual
- * business of unregistering the handler. It exists as a
- * seperate function to enable handlers to be unregistered
- * for irqactions that have been allocated statically at
- * boot time.
- *
- * This function must not be called from interrupt context.
- */
-int teardown_irq(unsigned int irq, struct irqaction * old)
-{
- struct irq_desc *desc;
- struct irqaction **p;
- unsigned long flags;
-
- if (irq >= NR_IRQS)
- return -ENOENT;
-
- desc = irq_desc + irq;
- spin_lock_irqsave(&desc->lock,flags);
- p = &desc->action;
- for (;;) {
- struct irqaction * action = *p;
-
- if (action) {
- struct irqaction **pp = p;
-
- p = &action->next;
- if (action != old)
- continue;
-
- /* Found it - now remove it from the list of entries */
- *pp = action->next;
- if (!desc->action) {
- desc->status |= IRQ_DISABLED;
- if (desc->handler->shutdown)
- desc->handler->shutdown(irq);
- else
- desc->handler->disable(irq);
- }
- spin_unlock_irqrestore(&desc->lock,flags);
- unregister_handler_proc(irq, action);
-
- /* Make sure it's not being used on another CPU */
- synchronize_irq(irq);
- return 0;
- }
- printk(KERN_ERR "Trying to teardown free IRQ%d\n",irq);
- spin_unlock_irqrestore(&desc->lock,flags);
- return -ENOENT;
- }
-}
-
-/**
- * free_irq - free an interrupt
- * @irq: Interrupt line to free
- * @dev_id: Device identity to free
- *
- * Remove an interrupt handler. The handler is removed and if the
- * interrupt line is no longer in use by any driver it is disabled.
- * On a shared IRQ the caller must ensure the interrupt is disabled
- * on the card it drives before calling this function. The function
- * does not return until any executing interrupts for this IRQ
- * have completed.
- *
- * This function must not be called from interrupt context.
- */
-void free_irq(unsigned int irq, void *dev_id)
-{
- struct irq_desc *desc;
- struct irqaction *action;
- unsigned long flags;
-
- if (irq >= NR_IRQS)
- return;
-
- desc = irq_desc + irq;
- spin_lock_irqsave(&desc->lock,flags);
- for (action = desc->action; action != NULL; action = action->next) {
- if (action->dev_id != dev_id)
- continue;
-
- spin_unlock_irqrestore(&desc->lock,flags);
-
- if (teardown_irq(irq, action) == 0)
- kfree(action);
- return;
- }
- printk(KERN_ERR "Trying to free free IRQ%d\n",irq);
- spin_unlock_irqrestore(&desc->lock,flags);
- return;
-}
-
-EXPORT_SYMBOL(free_irq);
-
-/**
- * request_irq - allocate an interrupt line
- * @irq: Interrupt line to allocate
- * @handler: Function to be called when the IRQ occurs
- * @irqflags: Interrupt type flags
- * @devname: An ascii name for the claiming device
- * @dev_id: A cookie passed back to the handler function
- *
- * This call allocates interrupt resources and enables the
- * interrupt line and IRQ handling. From the point this
- * call is made your handler function may be invoked. Since
- * your handler function must clear any interrupt the board
- * raises, you must take care both to initialise your hardware
- * and to set up the interrupt handler in the right order.
- *
- * Dev_id must be globally unique. Normally the address of the
- * device data structure is used as the cookie. Since the handler
- * receives this value it makes sense to use it.
- *
- * If your interrupt is shared you must pass a non NULL dev_id
- * as this is required when freeing the interrupt.
- *
- * Flags:
- *
- * SA_SHIRQ Interrupt is shared
- * SA_INTERRUPT Disable local interrupts while processing
- * SA_SAMPLE_RANDOM The interrupt can be used for entropy
- *
- */
-int request_irq(unsigned int irq,
- irqreturn_t (*handler)(int, void *, struct pt_regs *),
- unsigned long irqflags, const char * devname, void *dev_id)
-{
- struct irqaction * action;
- int retval;
-
- /*
- * Sanity-check: shared interrupts must pass in a real dev-ID,
- * otherwise we'll have trouble later trying to figure out
- * which interrupt is which (messes up the interrupt freeing
- * logic etc).
- */
- if ((irqflags & SA_SHIRQ) && !dev_id)
- return -EINVAL;
- if (irq >= NR_IRQS)
- return -EINVAL;
- if (!handler)
- return -EINVAL;
-
- action = kmalloc(sizeof(struct irqaction), GFP_ATOMIC);
- if (!action)
- return -ENOMEM;
-
- action->handler = handler;
- action->flags = irqflags;
- cpus_clear(action->mask);
- action->name = devname;
- action->next = NULL;
- action->dev_id = dev_id;
-
- retval = setup_irq(irq, action);
- if (retval)
- kfree(action);
-
- return retval;
-}
-
-EXPORT_SYMBOL(request_irq);
-
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.6.11-xen-sparse/mkbuildtree
--- a/linux-2.6.11-xen-sparse/mkbuildtree Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,111 +0,0 @@
-#!/bin/bash
-
-# mkbuildtree <build tree>
-#
-# Creates symbolic links in <build tree> for the sparse tree
-# in the current directory.
-
-# Script to determine the relative path between two directories.
-# Copyright (c) D. J. Hawkey Jr. 2002
-# Fixed for Xen project by K. Fraser in 2003.
-abs_to_rel ()
-{
- local CWD SRCPATH
-
- if [ "$1" != "/" -a "${1##*[^/]}" = "/" ]; then
- SRCPATH=${1%?}
- else
- SRCPATH=$1
- fi
- if [ "$2" != "/" -a "${2##*[^/]}" = "/" ]; then
- DESTPATH=${2%?}
- else
- DESTPATH=$2
- fi
-
- CWD=$PWD
- [ "${1%%[^/]*}" != "/" ] && cd $1 && SRCPATH=$PWD
- [ "${2%%[^/]*}" != "/" ] && cd $2 && DESTPATH=$PWD
- [ "$CWD" != "$PWD" ] && cd $CWD
-
- BASEPATH=$SRCPATH
-
- [ "$SRCPATH" = "$DESTPATH" ] && DESTPATH="." && return
- [ "$SRCPATH" = "/" ] && DESTPATH=${DESTPATH#?} && return
-
- while [ "$BASEPATH/" != "${DESTPATH%${DESTPATH#$BASEPATH/}}" ]; do
- BASEPATH=${BASEPATH%/*}
- done
-
- SRCPATH=${SRCPATH#$BASEPATH}
- DESTPATH=${DESTPATH#$BASEPATH}
- DESTPATH=${DESTPATH#?}
- while [ -n "$SRCPATH" ]; do
- SRCPATH=${SRCPATH%/*}
- DESTPATH="../$DESTPATH"
- done
-
- [ -z "$BASEPATH" ] && BASEPATH="/"
- [ "${DESTPATH##*[^/]}" = "/" ] && DESTPATH=${DESTPATH%?}
-}
-
-# relative_lndir <target_dir>
-# Creates a tree of symlinks in the current working directory that mirror
-# real files in <target_dir>. <target_dir> should be relative to the current
-# working directory. Symlinks in <target_dir> are ignored. Source-control files
-# are ignored.
-relative_lndir ()
-{
- local SYMLINK_DIR REAL_DIR pref i j
- SYMLINK_DIR=$PWD
- REAL_DIR=$1
- (
- cd $REAL_DIR
- for i in `find . -type d | grep -v SCCS`; do
- [ -d $SYMLINK_DIR/$i ] || mkdir -p $SYMLINK_DIR/$i
- (
- cd $i
- pref=`echo $i | sed -e 's#/[^/]*#../#g' -e 's#^\.##'`
- for j in `find . -maxdepth 1 -type f -o -type l`; do
- ln -sf ${pref}${REAL_DIR}/$i/$j ${SYMLINK_DIR}/$i/$j
- done
- )
- done
- )
-}
-
-[ "$1" == "" ] && { echo "Syntax: $0 <linux tree to xenify>"; exit 1; }
-
-# Get absolute path to the destination directory
-pushd . >/dev/null
-cd ${1} || { echo "cannot cd to ${1}"; exit 1; }
-AD=$PWD
-popd >/dev/null
-
-# Get absolute path to the source directory
-AS=`pwd`
-
-# Get path to source, relative to destination
-abs_to_rel ${AD} ${AS}
-RS=$DESTPATH
-
-# Remove old copies of files and directories at the destination
-for i in `find . -type f -o -type l` ; do rm -f ${AD}/${i#./} ; done
-
-# We now work from the destination directory
-cd ${AD} || { echo "cannot cd to ${AD}"; exit 1; }
-
-# Remove old symlinks
-for i in `find . -type l`; do rm -f $i; done
-
-# Create symlinks of files and directories which exist in the sparse source
-relative_lndir ${RS}
-rm -f mkbuildtree
-
-
-# Create links to the shared definitions of the Xen interfaces.
-rm -rf ${AD}/include/asm-xen/xen-public
-mkdir ${AD}/include/asm-xen/xen-public
-cd ${AD}/include/asm-xen/xen-public
-relative_lndir ../../../${RS}/../xen/include/public
-
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.6.11-xen-sparse/mm/highmem.c
--- a/linux-2.6.11-xen-sparse/mm/highmem.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,614 +0,0 @@
-/*
- * High memory handling common code and variables.
- *
- * (C) 1999 Andrea Arcangeli, SuSE GmbH, andrea@xxxxxxx
- * Gerhard Wichert, Siemens AG, Gerhard.Wichert@xxxxxxxxxxxxxx
- *
- *
- * Redesigned the x86 32-bit VM architecture to deal with
- * 64-bit physical space. With current x86 CPUs this
- * means up to 64 Gigabytes physical RAM.
- *
- * Rewrote high memory support to move the page cache into
- * high memory. Implemented permanent (schedulable) kmaps
- * based on Linus' idea.
- *
- * Copyright (C) 1999 Ingo Molnar <mingo@xxxxxxxxxx>
- */
-
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/swap.h>
-#include <linux/bio.h>
-#include <linux/pagemap.h>
-#include <linux/mempool.h>
-#include <linux/blkdev.h>
-#include <linux/init.h>
-#include <linux/hash.h>
-#include <linux/highmem.h>
-#include <asm/tlbflush.h>
-
-static mempool_t *page_pool, *isa_page_pool;
-
-static void *page_pool_alloc(int gfp_mask, void *data)
-{
- int gfp = gfp_mask | (int) (long) data;
-
- return alloc_page(gfp);
-}
-
-static void page_pool_free(void *page, void *data)
-{
- __free_page(page);
-}
-
-/*
- * Virtual_count is not a pure "count".
- * 0 means that it is not mapped, and has not been mapped
- * since a TLB flush - it is usable.
- * 1 means that there are no users, but it has been mapped
- * since the last TLB flush - so we can't use it.
- * n means that there are (n-1) current users of it.
- */
-#ifdef CONFIG_HIGHMEM
-static int pkmap_count[LAST_PKMAP];
-static unsigned int last_pkmap_nr;
-static __cacheline_aligned_in_smp DEFINE_SPINLOCK(kmap_lock);
-
-pte_t * pkmap_page_table;
-
-static DECLARE_WAIT_QUEUE_HEAD(pkmap_map_wait);
-
-static void flush_all_zero_pkmaps(void)
-{
- int i;
-
- flush_cache_kmaps();
-
- for (i = 0; i < LAST_PKMAP; i++) {
- struct page *page;
-
- /*
- * zero means we don't have anything to do,
- * >1 means that it is still in use. Only
- * a count of 1 means that it is free but
- * needs to be unmapped
- */
- if (pkmap_count[i] != 1)
- continue;
- pkmap_count[i] = 0;
-
- /* sanity check */
- if (pte_none(pkmap_page_table[i]))
- BUG();
-
- /*
- * Don't need an atomic fetch-and-clear op here;
- * no-one has the page mapped, and cannot get at
- * its virtual address (and hence PTE) without first
- * getting the kmap_lock (which is held here).
- * So no dangers, even with speculative execution.
- */
- page = pte_page(pkmap_page_table[i]);
- pte_clear(&pkmap_page_table[i]);
-
- set_page_address(page, NULL);
- }
- flush_tlb_kernel_range(PKMAP_ADDR(0), PKMAP_ADDR(LAST_PKMAP));
-}
-
-static inline unsigned long map_new_virtual(struct page *page)
-{
- unsigned long vaddr;
- int count;
-
-start:
- count = LAST_PKMAP;
- /* Find an empty entry */
- for (;;) {
- last_pkmap_nr = (last_pkmap_nr + 1) & LAST_PKMAP_MASK;
- if (!last_pkmap_nr) {
- flush_all_zero_pkmaps();
- count = LAST_PKMAP;
- }
- if (!pkmap_count[last_pkmap_nr])
- break; /* Found a usable entry */
- if (--count)
- continue;
-
- /*
- * Sleep for somebody else to unmap their entries
- */
- {
- DECLARE_WAITQUEUE(wait, current);
-
- __set_current_state(TASK_UNINTERRUPTIBLE);
- add_wait_queue(&pkmap_map_wait, &wait);
- spin_unlock(&kmap_lock);
- schedule();
- remove_wait_queue(&pkmap_map_wait, &wait);
- spin_lock(&kmap_lock);
-
- /* Somebody else might have mapped it while we slept */
- if (page_address(page))
- return (unsigned long)page_address(page);
-
- /* Re-start */
- goto start;
- }
- }
- vaddr = PKMAP_ADDR(last_pkmap_nr);
- set_pte(&(pkmap_page_table[last_pkmap_nr]), mk_pte(page, kmap_prot));
-
- pkmap_count[last_pkmap_nr] = 1;
- set_page_address(page, (void *)vaddr);
-
- return vaddr;
-}
-
-void kmap_flush_unused(void)
-{
- spin_lock(&kmap_lock);
- flush_all_zero_pkmaps();
- spin_unlock(&kmap_lock);
-}
-
-EXPORT_SYMBOL(kmap_flush_unused);
-
-void fastcall *kmap_high(struct page *page)
-{
- unsigned long vaddr;
-
- /*
- * For highmem pages, we can't trust "virtual" until
- * after we have the lock.
- *
- * We cannot call this from interrupts, as it may block
- */
- spin_lock(&kmap_lock);
- vaddr = (unsigned long)page_address(page);
- if (!vaddr)
- vaddr = map_new_virtual(page);
- pkmap_count[PKMAP_NR(vaddr)]++;
- if (pkmap_count[PKMAP_NR(vaddr)] < 2)
- BUG();
- spin_unlock(&kmap_lock);
- return (void*) vaddr;
-}
-
-EXPORT_SYMBOL(kmap_high);
-
-void fastcall kunmap_high(struct page *page)
-{
- unsigned long vaddr;
- unsigned long nr;
- int need_wakeup;
-
- spin_lock(&kmap_lock);
- vaddr = (unsigned long)page_address(page);
- if (!vaddr)
- BUG();
- nr = PKMAP_NR(vaddr);
-
- /*
- * A count must never go down to zero
- * without a TLB flush!
- */
- need_wakeup = 0;
- switch (--pkmap_count[nr]) {
- case 0:
- BUG();
- case 1:
- /*
- * Avoid an unnecessary wake_up() function call.
- * The common case is pkmap_count[] == 1, but
- * no waiters.
- * The tasks queued in the wait-queue are guarded
- * by both the lock in the wait-queue-head and by
- * the kmap_lock. As the kmap_lock is held here,
- * no need for the wait-queue-head's lock. Simply
- * test if the queue is empty.
- */
- need_wakeup = waitqueue_active(&pkmap_map_wait);
- }
- spin_unlock(&kmap_lock);
-
- /* do wake-up, if needed, race-free outside of the spin lock */
- if (need_wakeup)
- wake_up(&pkmap_map_wait);
-}
-
-EXPORT_SYMBOL(kunmap_high);
-
-#define POOL_SIZE 64
-
-static __init int init_emergency_pool(void)
-{
- struct sysinfo i;
- si_meminfo(&i);
- si_swapinfo(&i);
-
- if (!i.totalhigh)
- return 0;
-
- page_pool = mempool_create(POOL_SIZE, page_pool_alloc, page_pool_free,
NULL);
- if (!page_pool)
- BUG();
- printk("highmem bounce pool size: %d pages\n", POOL_SIZE);
-
- return 0;
-}
-
-__initcall(init_emergency_pool);
-
-/*
- * highmem version, map in to vec
- */
-static void bounce_copy_vec(struct bio_vec *to, unsigned char *vfrom)
-{
- unsigned long flags;
- unsigned char *vto;
-
- local_irq_save(flags);
- vto = kmap_atomic(to->bv_page, KM_BOUNCE_READ);
- memcpy(vto + to->bv_offset, vfrom, to->bv_len);
- kunmap_atomic(vto, KM_BOUNCE_READ);
- local_irq_restore(flags);
-}
-
-#else /* CONFIG_HIGHMEM */
-
-#define bounce_copy_vec(to, vfrom) \
- memcpy(page_address((to)->bv_page) + (to)->bv_offset, vfrom,
(to)->bv_len)
-
-#endif
-
-#define ISA_POOL_SIZE 16
-
-/*
- * gets called "every" time someone init's a queue with BLK_BOUNCE_ISA
- * as the max address, so check if the pool has already been created.
- */
-int init_emergency_isa_pool(void)
-{
- if (isa_page_pool)
- return 0;
-
- isa_page_pool = mempool_create(ISA_POOL_SIZE, page_pool_alloc,
page_pool_free, (void *) __GFP_DMA);
- if (!isa_page_pool)
- BUG();
-
- printk("isa bounce pool size: %d pages\n", ISA_POOL_SIZE);
- return 0;
-}
-
-/*
- * Simple bounce buffer support for highmem pages. Depending on the
- * queue gfp mask set, *to may or may not be a highmem page. kmap it
- * always, it will do the Right Thing
- */
-static void copy_to_high_bio_irq(struct bio *to, struct bio *from)
-{
- unsigned char *vfrom;
- struct bio_vec *tovec, *fromvec;
- int i;
-
- __bio_for_each_segment(tovec, to, i, 0) {
- fromvec = from->bi_io_vec + i;
-
- /*
- * not bounced
- */
- if (tovec->bv_page == fromvec->bv_page)
- continue;
-
- /*
- * fromvec->bv_offset and fromvec->bv_len might have been
- * modified by the block layer, so use the original copy,
- * bounce_copy_vec already uses tovec->bv_len
- */
- vfrom = page_address(fromvec->bv_page) + tovec->bv_offset;
-
- flush_dcache_page(tovec->bv_page);
- bounce_copy_vec(tovec, vfrom);
- }
-}
-
-static void bounce_end_io(struct bio *bio, mempool_t *pool, int err)
-{
- struct bio *bio_orig = bio->bi_private;
- struct bio_vec *bvec, *org_vec;
- int i;
-
- if (test_bit(BIO_EOPNOTSUPP, &bio->bi_flags))
- set_bit(BIO_EOPNOTSUPP, &bio_orig->bi_flags);
-
- /*
- * free up bounce indirect pages used
- */
- __bio_for_each_segment(bvec, bio, i, 0) {
- org_vec = bio_orig->bi_io_vec + i;
- if (bvec->bv_page == org_vec->bv_page)
- continue;
-
- mempool_free(bvec->bv_page, pool);
- }
-
- bio_endio(bio_orig, bio_orig->bi_size, err);
- bio_put(bio);
-}
-
-static int bounce_end_io_write(struct bio *bio, unsigned int bytes_done,int
err)
-{
- if (bio->bi_size)
- return 1;
-
- bounce_end_io(bio, page_pool, err);
- return 0;
-}
-
-static int bounce_end_io_write_isa(struct bio *bio, unsigned int bytes_done,
int err)
-{
- if (bio->bi_size)
- return 1;
-
- bounce_end_io(bio, isa_page_pool, err);
- return 0;
-}
-
-static void __bounce_end_io_read(struct bio *bio, mempool_t *pool, int err)
-{
- struct bio *bio_orig = bio->bi_private;
-
- if (test_bit(BIO_UPTODATE, &bio->bi_flags))
- copy_to_high_bio_irq(bio_orig, bio);
-
- bounce_end_io(bio, pool, err);
-}
-
-static int bounce_end_io_read(struct bio *bio, unsigned int bytes_done, int
err)
-{
- if (bio->bi_size)
- return 1;
-
- __bounce_end_io_read(bio, page_pool, err);
- return 0;
-}
-
-static int bounce_end_io_read_isa(struct bio *bio, unsigned int bytes_done,
int err)
-{
- if (bio->bi_size)
- return 1;
-
- __bounce_end_io_read(bio, isa_page_pool, err);
- return 0;
-}
-
-static void __blk_queue_bounce(request_queue_t *q, struct bio **bio_orig,
- mempool_t *pool)
-{
- struct page *page;
- struct bio *bio = NULL;
- int i, rw = bio_data_dir(*bio_orig);
- struct bio_vec *to, *from;
-
- bio_for_each_segment(from, *bio_orig, i) {
- page = from->bv_page;
-
- /*
- * is destination page below bounce pfn?
- */
- if (page_to_pfn(page) < q->bounce_pfn)
- continue;
-
- /*
- * irk, bounce it
- */
- if (!bio)
- bio = bio_alloc(GFP_NOIO, (*bio_orig)->bi_vcnt);
-
- to = bio->bi_io_vec + i;
-
- to->bv_page = mempool_alloc(pool, q->bounce_gfp);
- to->bv_len = from->bv_len;
- to->bv_offset = from->bv_offset;
-
- if (rw == WRITE) {
- char *vto, *vfrom;
-
- flush_dcache_page(from->bv_page);
- vto = page_address(to->bv_page) + to->bv_offset;
- vfrom = kmap(from->bv_page) + from->bv_offset;
- memcpy(vto, vfrom, to->bv_len);
- kunmap(from->bv_page);
- }
- }
-
- /*
- * no pages bounced
- */
- if (!bio)
- return;
-
- /*
- * at least one page was bounced, fill in possible non-highmem
- * pages
- */
- __bio_for_each_segment(from, *bio_orig, i, 0) {
- to = bio_iovec_idx(bio, i);
- if (!to->bv_page) {
- to->bv_page = from->bv_page;
- to->bv_len = from->bv_len;
- to->bv_offset = from->bv_offset;
- }
- }
-
- bio->bi_bdev = (*bio_orig)->bi_bdev;
- bio->bi_flags |= (1 << BIO_BOUNCED);
- bio->bi_sector = (*bio_orig)->bi_sector;
- bio->bi_rw = (*bio_orig)->bi_rw;
-
- bio->bi_vcnt = (*bio_orig)->bi_vcnt;
- bio->bi_idx = (*bio_orig)->bi_idx;
- bio->bi_size = (*bio_orig)->bi_size;
-
- if (pool == page_pool) {
- bio->bi_end_io = bounce_end_io_write;
- if (rw == READ)
- bio->bi_end_io = bounce_end_io_read;
- } else {
- bio->bi_end_io = bounce_end_io_write_isa;
- if (rw == READ)
- bio->bi_end_io = bounce_end_io_read_isa;
- }
-
- bio->bi_private = *bio_orig;
- *bio_orig = bio;
-}
-
-void blk_queue_bounce(request_queue_t *q, struct bio **bio_orig)
-{
- mempool_t *pool;
-
- /*
- * for non-isa bounce case, just check if the bounce pfn is equal
- * to or bigger than the highest pfn in the system -- in that case,
- * don't waste time iterating over bio segments
- */
- if (!(q->bounce_gfp & GFP_DMA)) {
- if (q->bounce_pfn >= blk_max_pfn)
- return;
- pool = page_pool;
- } else {
- BUG_ON(!isa_page_pool);
- pool = isa_page_pool;
- }
-
- /*
- * slow path
- */
- __blk_queue_bounce(q, bio_orig, pool);
-}
-
-EXPORT_SYMBOL(blk_queue_bounce);
-
-#if defined(HASHED_PAGE_VIRTUAL)
-
-#define PA_HASH_ORDER 7
-
-/*
- * Describes one page->virtual association
- */
-struct page_address_map {
- struct page *page;
- void *virtual;
- struct list_head list;
-};
-
-/*
- * page_address_map freelist, allocated from page_address_maps.
- */
-static struct list_head page_address_pool; /* freelist */
-static spinlock_t pool_lock; /* protects page_address_pool */
-
-/*
- * Hash table bucket
- */
-static struct page_address_slot {
- struct list_head lh; /* List of page_address_maps */
- spinlock_t lock; /* Protect this bucket's list */
-} ____cacheline_aligned_in_smp page_address_htable[1<<PA_HASH_ORDER];
-
-static struct page_address_slot *page_slot(struct page *page)
-{
- return &page_address_htable[hash_ptr(page, PA_HASH_ORDER)];
-}
-
-void *page_address(struct page *page)
-{
- unsigned long flags;
- void *ret;
- struct page_address_slot *pas;
-
- if (!PageHighMem(page))
- return lowmem_page_address(page);
-
- pas = page_slot(page);
- ret = NULL;
- spin_lock_irqsave(&pas->lock, flags);
- if (!list_empty(&pas->lh)) {
- struct page_address_map *pam;
-
- list_for_each_entry(pam, &pas->lh, list) {
- if (pam->page == page) {
- ret = pam->virtual;
- goto done;
- }
- }
- }
-done:
- spin_unlock_irqrestore(&pas->lock, flags);
- return ret;
-}
-
-EXPORT_SYMBOL(page_address);
-
-void set_page_address(struct page *page, void *virtual)
-{
- unsigned long flags;
- struct page_address_slot *pas;
- struct page_address_map *pam;
-
- BUG_ON(!PageHighMem(page));
-
- pas = page_slot(page);
- if (virtual) { /* Add */
- BUG_ON(list_empty(&page_address_pool));
-
- spin_lock_irqsave(&pool_lock, flags);
- pam = list_entry(page_address_pool.next,
- struct page_address_map, list);
- list_del(&pam->list);
- spin_unlock_irqrestore(&pool_lock, flags);
-
- pam->page = page;
- pam->virtual = virtual;
-
- spin_lock_irqsave(&pas->lock, flags);
- list_add_tail(&pam->list, &pas->lh);
- spin_unlock_irqrestore(&pas->lock, flags);
- } else { /* Remove */
- spin_lock_irqsave(&pas->lock, flags);
- list_for_each_entry(pam, &pas->lh, list) {
- if (pam->page == page) {
- list_del(&pam->list);
- spin_unlock_irqrestore(&pas->lock, flags);
- spin_lock_irqsave(&pool_lock, flags);
- list_add_tail(&pam->list, &page_address_pool);
- spin_unlock_irqrestore(&pool_lock, flags);
- goto done;
- }
- }
- spin_unlock_irqrestore(&pas->lock, flags);
- }
-done:
- return;
-}
-
-static struct page_address_map page_address_maps[LAST_PKMAP];
-
-void __init page_address_init(void)
-{
- int i;
-
- INIT_LIST_HEAD(&page_address_pool);
- for (i = 0; i < ARRAY_SIZE(page_address_maps); i++)
- list_add(&page_address_maps[i].list, &page_address_pool);
- for (i = 0; i < ARRAY_SIZE(page_address_htable); i++) {
- INIT_LIST_HEAD(&page_address_htable[i].lh);
- spin_lock_init(&page_address_htable[i].lock);
- }
- spin_lock_init(&pool_lock);
-}
-
-#endif /* defined(CONFIG_HIGHMEM) && !defined(WANT_PAGE_VIRTUAL) */
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.6.11-xen-sparse/mm/memory.c
--- a/linux-2.6.11-xen-sparse/mm/memory.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,2321 +0,0 @@
-/*
- * linux/mm/memory.c
- *
- * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds
- */
-
-/*
- * demand-loading started 01.12.91 - seems it is high on the list of
- * things wanted, and it should be easy to implement. - Linus
- */
-
-/*
- * Ok, demand-loading was easy, shared pages a little bit tricker. Shared
- * pages started 02.12.91, seems to work. - Linus.
- *
- * Tested sharing by executing about 30 /bin/sh: under the old kernel it
- * would have taken more than the 6M I have free, but it worked well as
- * far as I could see.
- *
- * Also corrected some "invalidate()"s - I wasn't doing enough of them.
- */
-
-/*
- * Real VM (paging to/from disk) started 18.12.91. Much more work and
- * thought has to go into this. Oh, well..
- * 19.12.91 - works, somewhat. Sometimes I get faults, don't know why.
- * Found it. Everything seems to work now.
- * 20.12.91 - Ok, making the swap-device changeable like the root.
- */
-
-/*
- * 05.04.94 - Multi-page memory management added for v1.1.
- * Idea by Alex Bligh (alex@xxxxxxxxxxxxxxx)
- *
- * 16.07.99 - Support of BIGMEM added by Gerhard Wichert, Siemens AG
- * (Gerhard.Wichert@xxxxxxxxxxxxxx)
- *
- * Aug/Sep 2004 Changed to four level page tables (Andi Kleen)
- */
-
-#include <linux/kernel_stat.h>
-#include <linux/mm.h>
-#include <linux/hugetlb.h>
-#include <linux/mman.h>
-#include <linux/swap.h>
-#include <linux/highmem.h>
-#include <linux/pagemap.h>
-#include <linux/rmap.h>
-#include <linux/acct.h>
-#include <linux/module.h>
-#include <linux/init.h>
-
-#include <asm/pgalloc.h>
-#include <asm/uaccess.h>
-#include <asm/tlb.h>
-#include <asm/tlbflush.h>
-#include <asm/pgtable.h>
-
-#include <linux/swapops.h>
-#include <linux/elf.h>
-
-#ifndef CONFIG_DISCONTIGMEM
-/* use the per-pgdat data instead for discontigmem - mbligh */
-unsigned long max_mapnr;
-struct page *mem_map;
-
-EXPORT_SYMBOL(max_mapnr);
-EXPORT_SYMBOL(mem_map);
-#endif
-
-unsigned long num_physpages;
-/*
- * A number of key systems in x86 including ioremap() rely on the assumption
- * that high_memory defines the upper bound on direct map memory, then end
- * of ZONE_NORMAL. Under CONFIG_DISCONTIG this means that max_low_pfn and
- * highstart_pfn must be the same; there must be no gap between ZONE_NORMAL
- * and ZONE_HIGHMEM.
- */
-void * high_memory;
-unsigned long vmalloc_earlyreserve;
-
-EXPORT_SYMBOL(num_physpages);
-EXPORT_SYMBOL(high_memory);
-EXPORT_SYMBOL(vmalloc_earlyreserve);
-
-/*
- * Note: this doesn't free the actual pages themselves. That
- * has been handled earlier when unmapping all the memory regions.
- */
-static inline void clear_pmd_range(struct mmu_gather *tlb, pmd_t *pmd,
unsigned long start, unsigned long end)
-{
- struct page *page;
-
- if (pmd_none(*pmd))
- return;
- if (unlikely(pmd_bad(*pmd))) {
- pmd_ERROR(*pmd);
- pmd_clear(pmd);
- return;
- }
- if (!((start | end) & ~PMD_MASK)) {
- /* Only clear full, aligned ranges */
- page = pmd_page(*pmd);
- pmd_clear(pmd);
- dec_page_state(nr_page_table_pages);
- tlb->mm->nr_ptes--;
- pte_free_tlb(tlb, page);
- }
-}
-
-static inline void clear_pud_range(struct mmu_gather *tlb, pud_t *pud,
unsigned long start, unsigned long end)
-{
- unsigned long addr = start, next;
- pmd_t *pmd, *__pmd;
-
- if (pud_none(*pud))
- return;
- if (unlikely(pud_bad(*pud))) {
- pud_ERROR(*pud);
- pud_clear(pud);
- return;
- }
-
- pmd = __pmd = pmd_offset(pud, start);
- do {
- next = (addr + PMD_SIZE) & PMD_MASK;
- if (next > end || next <= addr)
- next = end;
-
- clear_pmd_range(tlb, pmd, addr, next);
- pmd++;
- addr = next;
- } while (addr && (addr < end));
-
- if (!((start | end) & ~PUD_MASK)) {
- /* Only clear full, aligned ranges */
- pud_clear(pud);
- pmd_free_tlb(tlb, __pmd);
- }
-}
-
-
-static inline void clear_pgd_range(struct mmu_gather *tlb, pgd_t *pgd,
unsigned long start, unsigned long end)
-{
- unsigned long addr = start, next;
- pud_t *pud, *__pud;
-
- if (pgd_none(*pgd))
- return;
- if (unlikely(pgd_bad(*pgd))) {
- pgd_ERROR(*pgd);
- pgd_clear(pgd);
- return;
- }
-
- pud = __pud = pud_offset(pgd, start);
- do {
- next = (addr + PUD_SIZE) & PUD_MASK;
- if (next > end || next <= addr)
- next = end;
-
- clear_pud_range(tlb, pud, addr, next);
- pud++;
- addr = next;
- } while (addr && (addr < end));
-
- if (!((start | end) & ~PGDIR_MASK)) {
- /* Only clear full, aligned ranges */
- pgd_clear(pgd);
- pud_free_tlb(tlb, __pud);
- }
-}
-
-/*
- * This function clears user-level page tables of a process.
- *
- * Must be called with pagetable lock held.
- */
-void clear_page_range(struct mmu_gather *tlb, unsigned long start, unsigned
long end)
-{
- unsigned long addr = start, next;
- pgd_t * pgd = pgd_offset(tlb->mm, start);
- unsigned long i;
-
- for (i = pgd_index(start); i <= pgd_index(end-1); i++) {
- next = (addr + PGDIR_SIZE) & PGDIR_MASK;
- if (next > end || next <= addr)
- next = end;
-
- clear_pgd_range(tlb, pgd, addr, next);
- pgd++;
- addr = next;
- }
-}
-
-pte_t fastcall * pte_alloc_map(struct mm_struct *mm, pmd_t *pmd, unsigned long
address)
-{
- if (!pmd_present(*pmd)) {
- struct page *new;
-
- spin_unlock(&mm->page_table_lock);
- new = pte_alloc_one(mm, address);
- spin_lock(&mm->page_table_lock);
- if (!new)
- return NULL;
- /*
- * Because we dropped the lock, we should re-check the
- * entry, as somebody else could have populated it..
- */
- if (pmd_present(*pmd)) {
- pte_free(new);
- goto out;
- }
- mm->nr_ptes++;
- inc_page_state(nr_page_table_pages);
- pmd_populate(mm, pmd, new);
- }
-out:
- return pte_offset_map(pmd, address);
-}
-
-pte_t fastcall * pte_alloc_kernel(struct mm_struct *mm, pmd_t *pmd, unsigned
long address)
-{
- if (!pmd_present(*pmd)) {
- pte_t *new;
-
- spin_unlock(&mm->page_table_lock);
- new = pte_alloc_one_kernel(mm, address);
- spin_lock(&mm->page_table_lock);
- if (!new)
- return NULL;
-
- /*
- * Because we dropped the lock, we should re-check the
- * entry, as somebody else could have populated it..
- */
- if (pmd_present(*pmd)) {
- pte_free_kernel(new);
- goto out;
- }
- pmd_populate_kernel(mm, pmd, new);
- }
-out:
- return pte_offset_kernel(pmd, address);
-}
-
-/*
- * copy one vm_area from one task to the other. Assumes the page tables
- * already present in the new task to be cleared in the whole range
- * covered by this vma.
- *
- * dst->page_table_lock is held on entry and exit,
- * but may be dropped within p[mg]d_alloc() and pte_alloc_map().
- */
-
-static inline void
-copy_swap_pte(struct mm_struct *dst_mm, struct mm_struct *src_mm, pte_t pte)
-{
- if (pte_file(pte))
- return;
- swap_duplicate(pte_to_swp_entry(pte));
- if (list_empty(&dst_mm->mmlist)) {
- spin_lock(&mmlist_lock);
- list_add(&dst_mm->mmlist, &src_mm->mmlist);
- spin_unlock(&mmlist_lock);
- }
-}
-
-static inline void
-copy_one_pte(struct mm_struct *dst_mm, struct mm_struct *src_mm,
- pte_t *dst_pte, pte_t *src_pte, unsigned long vm_flags,
- unsigned long addr)
-{
- pte_t pte = *src_pte;
- struct page *page;
- unsigned long pfn;
-
- /* pte contains position in swap, so copy. */
- if (!pte_present(pte)) {
- copy_swap_pte(dst_mm, src_mm, pte);
- set_pte(dst_pte, pte);
- return;
- }
- pfn = pte_pfn(pte);
- /* the pte points outside of valid memory, the
- * mapping is assumed to be good, meaningful
- * and not mapped via rmap - duplicate the
- * mapping as is.
- */
- page = NULL;
- if (pfn_valid(pfn))
- page = pfn_to_page(pfn);
-
- if (!page || PageReserved(page)) {
- set_pte(dst_pte, pte);
- return;
- }
-
- /*
- * If it's a COW mapping, write protect it both
- * in the parent and the child
- */
- if ((vm_flags & (VM_SHARED | VM_MAYWRITE)) == VM_MAYWRITE) {
- ptep_set_wrprotect(src_pte);
- pte = *src_pte;
- }
-
- /*
- * If it's a shared mapping, mark it clean in
- * the child
- */
- if (vm_flags & VM_SHARED)
- pte = pte_mkclean(pte);
- pte = pte_mkold(pte);
- get_page(page);
- dst_mm->rss++;
- if (PageAnon(page))
- dst_mm->anon_rss++;
- set_pte(dst_pte, pte);
- page_dup_rmap(page);
-}
-
-static int copy_pte_range(struct mm_struct *dst_mm, struct mm_struct *src_mm,
- pmd_t *dst_pmd, pmd_t *src_pmd, struct vm_area_struct *vma,
- unsigned long addr, unsigned long end)
-{
- pte_t *src_pte, *dst_pte;
- pte_t *s, *d;
- unsigned long vm_flags = vma->vm_flags;
-
- d = dst_pte = pte_alloc_map(dst_mm, dst_pmd, addr);
- if (!dst_pte)
- return -ENOMEM;
-
- spin_lock(&src_mm->page_table_lock);
- s = src_pte = pte_offset_map_nested(src_pmd, addr);
- for (; addr < end; addr += PAGE_SIZE, s++, d++) {
- if (pte_none(*s))
- continue;
- copy_one_pte(dst_mm, src_mm, d, s, vm_flags, addr);
- }
- pte_unmap_nested(src_pte);
- pte_unmap(dst_pte);
- spin_unlock(&src_mm->page_table_lock);
- cond_resched_lock(&dst_mm->page_table_lock);
- return 0;
-}
-
-static int copy_pmd_range(struct mm_struct *dst_mm, struct mm_struct *src_mm,
- pud_t *dst_pud, pud_t *src_pud, struct vm_area_struct *vma,
- unsigned long addr, unsigned long end)
-{
- pmd_t *src_pmd, *dst_pmd;
- int err = 0;
- unsigned long next;
-
- src_pmd = pmd_offset(src_pud, addr);
- dst_pmd = pmd_alloc(dst_mm, dst_pud, addr);
- if (!dst_pmd)
- return -ENOMEM;
-
- for (; addr < end; addr = next, src_pmd++, dst_pmd++) {
- next = (addr + PMD_SIZE) & PMD_MASK;
- if (next > end || next <= addr)
- next = end;
- if (pmd_none(*src_pmd))
- continue;
- if (pmd_bad(*src_pmd)) {
- pmd_ERROR(*src_pmd);
- pmd_clear(src_pmd);
- continue;
- }
- err = copy_pte_range(dst_mm, src_mm, dst_pmd, src_pmd,
- vma, addr, next);
- if (err)
- break;
- }
- return err;
-}
-
-static int copy_pud_range(struct mm_struct *dst_mm, struct mm_struct *src_mm,
- pgd_t *dst_pgd, pgd_t *src_pgd, struct vm_area_struct *vma,
- unsigned long addr, unsigned long end)
-{
- pud_t *src_pud, *dst_pud;
- int err = 0;
- unsigned long next;
-
- src_pud = pud_offset(src_pgd, addr);
- dst_pud = pud_alloc(dst_mm, dst_pgd, addr);
- if (!dst_pud)
- return -ENOMEM;
-
- for (; addr < end; addr = next, src_pud++, dst_pud++) {
- next = (addr + PUD_SIZE) & PUD_MASK;
- if (next > end || next <= addr)
- next = end;
- if (pud_none(*src_pud))
- continue;
- if (pud_bad(*src_pud)) {
- pud_ERROR(*src_pud);
- pud_clear(src_pud);
- continue;
- }
- err = copy_pmd_range(dst_mm, src_mm, dst_pud, src_pud,
- vma, addr, next);
- if (err)
- break;
- }
- return err;
-}
-
-int copy_page_range(struct mm_struct *dst, struct mm_struct *src,
- struct vm_area_struct *vma)
-{
- pgd_t *src_pgd, *dst_pgd;
- unsigned long addr, start, end, next;
- int err = 0;
-
- if (is_vm_hugetlb_page(vma))
- return copy_hugetlb_page_range(dst, src, vma);
-
- start = vma->vm_start;
- src_pgd = pgd_offset(src, start);
- dst_pgd = pgd_offset(dst, start);
-
- end = vma->vm_end;
- addr = start;
- while (addr && (addr < end-1)) {
- next = (addr + PGDIR_SIZE) & PGDIR_MASK;
- if (next > end || next <= addr)
- next = end;
- if (pgd_none(*src_pgd))
- goto next_pgd;
- if (pgd_bad(*src_pgd)) {
- pgd_ERROR(*src_pgd);
- pgd_clear(src_pgd);
- goto next_pgd;
- }
- err = copy_pud_range(dst, src, dst_pgd, src_pgd,
- vma, addr, next);
- if (err)
- break;
-
-next_pgd:
- src_pgd++;
- dst_pgd++;
- addr = next;
- }
-
- return err;
-}
-
-static void zap_pte_range(struct mmu_gather *tlb,
- pmd_t *pmd, unsigned long address,
- unsigned long size, struct zap_details *details)
-{
- unsigned long offset;
- pte_t *ptep;
-
- if (pmd_none(*pmd))
- return;
- if (unlikely(pmd_bad(*pmd))) {
- pmd_ERROR(*pmd);
- pmd_clear(pmd);
- return;
- }
- ptep = pte_offset_map(pmd, address);
- offset = address & ~PMD_MASK;
- if (offset + size > PMD_SIZE)
- size = PMD_SIZE - offset;
- size &= PAGE_MASK;
- if (details && !details->check_mapping && !details->nonlinear_vma)
- details = NULL;
- for (offset=0; offset < size; ptep++, offset += PAGE_SIZE) {
- pte_t pte = *ptep;
- if (pte_none(pte))
- continue;
- if (pte_present(pte)) {
- struct page *page = NULL;
- unsigned long pfn = pte_pfn(pte);
- if (pfn_valid(pfn)) {
- page = pfn_to_page(pfn);
- if (PageReserved(page))
- page = NULL;
- }
- if (unlikely(details) && page) {
- /*
- * unmap_shared_mapping_pages() wants to
- * invalidate cache without truncating:
- * unmap shared but keep private pages.
- */
- if (details->check_mapping &&
- details->check_mapping != page->mapping)
- continue;
- /*
- * Each page->index must be checked when
- * invalidating or truncating nonlinear.
- */
- if (details->nonlinear_vma &&
- (page->index < details->first_index ||
- page->index > details->last_index))
- continue;
- }
- pte = ptep_get_and_clear(ptep);
- tlb_remove_tlb_entry(tlb, ptep, address+offset);
- if (unlikely(!page))
- continue;
- if (unlikely(details) && details->nonlinear_vma
- && linear_page_index(details->nonlinear_vma,
- address+offset) != page->index)
- set_pte(ptep, pgoff_to_pte(page->index));
- if (pte_dirty(pte))
- set_page_dirty(page);
- if (PageAnon(page))
- tlb->mm->anon_rss--;
- else if (pte_young(pte))
- mark_page_accessed(page);
- tlb->freed++;
- page_remove_rmap(page);
- tlb_remove_page(tlb, page);
- continue;
- }
- /*
- * If details->check_mapping, we leave swap entries;
- * if details->nonlinear_vma, we leave file entries.
- */
- if (unlikely(details))
- continue;
- if (!pte_file(pte))
- free_swap_and_cache(pte_to_swp_entry(pte));
- pte_clear(ptep);
- }
- pte_unmap(ptep-1);
-}
-
-static void zap_pmd_range(struct mmu_gather *tlb,
- pud_t *pud, unsigned long address,
- unsigned long size, struct zap_details *details)
-{
- pmd_t * pmd;
- unsigned long end;
-
- if (pud_none(*pud))
- return;
- if (unlikely(pud_bad(*pud))) {
- pud_ERROR(*pud);
- pud_clear(pud);
- return;
- }
- pmd = pmd_offset(pud, address);
- end = address + size;
- if (end > ((address + PUD_SIZE) & PUD_MASK))
- end = ((address + PUD_SIZE) & PUD_MASK);
- do {
- zap_pte_range(tlb, pmd, address, end - address, details);
- address = (address + PMD_SIZE) & PMD_MASK;
- pmd++;
- } while (address && (address < end));
-}
-
-static void zap_pud_range(struct mmu_gather *tlb,
- pgd_t * pgd, unsigned long address,
- unsigned long end, struct zap_details *details)
-{
- pud_t * pud;
-
- if (pgd_none(*pgd))
- return;
- if (unlikely(pgd_bad(*pgd))) {
- pgd_ERROR(*pgd);
- pgd_clear(pgd);
- return;
- }
- pud = pud_offset(pgd, address);
- do {
- zap_pmd_range(tlb, pud, address, end - address, details);
- address = (address + PUD_SIZE) & PUD_MASK;
- pud++;
- } while (address && (address < end));
-}
-
-static void unmap_page_range(struct mmu_gather *tlb,
- struct vm_area_struct *vma, unsigned long address,
- unsigned long end, struct zap_details *details)
-{
- unsigned long next;
- pgd_t *pgd;
- int i;
-
- BUG_ON(address >= end);
- pgd = pgd_offset(vma->vm_mm, address);
- tlb_start_vma(tlb, vma);
- for (i = pgd_index(address); i <= pgd_index(end-1); i++) {
- next = (address + PGDIR_SIZE) & PGDIR_MASK;
- if (next <= address || next > end)
- next = end;
- zap_pud_range(tlb, pgd, address, next, details);
- address = next;
- pgd++;
- }
- tlb_end_vma(tlb, vma);
-}
-
-#ifdef CONFIG_PREEMPT
-# define ZAP_BLOCK_SIZE (8 * PAGE_SIZE)
-#else
-/* No preempt: go for improved straight-line efficiency */
-# define ZAP_BLOCK_SIZE (1024 * PAGE_SIZE)
-#endif
-
-/**
- * unmap_vmas - unmap a range of memory covered by a list of vma's
- * @tlbp: address of the caller's struct mmu_gather
- * @mm: the controlling mm_struct
- * @vma: the starting vma
- * @start_addr: virtual address at which to start unmapping
- * @end_addr: virtual address at which to end unmapping
- * @nr_accounted: Place number of unmapped pages in vm-accountable vma's here
- * @details: details of nonlinear truncation or shared cache invalidation
- *
- * Returns the number of vma's which were covered by the unmapping.
- *
- * Unmap all pages in the vma list. Called under page_table_lock.
- *
- * We aim to not hold page_table_lock for too long (for scheduling latency
- * reasons). So zap pages in ZAP_BLOCK_SIZE bytecounts. This means we need to
- * return the ending mmu_gather to the caller.
- *
- * Only addresses between `start' and `end' will be unmapped.
- *
- * The VMA list must be sorted in ascending virtual address order.
- *
- * unmap_vmas() assumes that the caller will flush the whole unmapped address
- * range after unmap_vmas() returns. So the only responsibility here is to
- * ensure that any thus-far unmapped pages are flushed before unmap_vmas()
- * drops the lock and schedules.
- */
-int unmap_vmas(struct mmu_gather **tlbp, struct mm_struct *mm,
- struct vm_area_struct *vma, unsigned long start_addr,
- unsigned long end_addr, unsigned long *nr_accounted,
- struct zap_details *details)
-{
- unsigned long zap_bytes = ZAP_BLOCK_SIZE;
- unsigned long tlb_start = 0; /* For tlb_finish_mmu */
- int tlb_start_valid = 0;
- int ret = 0;
- spinlock_t *i_mmap_lock = details? details->i_mmap_lock: NULL;
- int fullmm = tlb_is_full_mm(*tlbp);
-
- for ( ; vma && vma->vm_start < end_addr; vma = vma->vm_next) {
- unsigned long start;
- unsigned long end;
-
- start = max(vma->vm_start, start_addr);
- if (start >= vma->vm_end)
- continue;
- end = min(vma->vm_end, end_addr);
- if (end <= vma->vm_start)
- continue;
-
- if (vma->vm_flags & VM_ACCOUNT)
- *nr_accounted += (end - start) >> PAGE_SHIFT;
-
- ret++;
- while (start != end) {
- unsigned long block;
-
- if (!tlb_start_valid) {
- tlb_start = start;
- tlb_start_valid = 1;
- }
-
- if (is_vm_hugetlb_page(vma)) {
- block = end - start;
- unmap_hugepage_range(vma, start, end);
- } else {
- block = min(zap_bytes, end - start);
- unmap_page_range(*tlbp, vma, start,
- start + block, details);
- }
-
- start += block;
- zap_bytes -= block;
- if ((long)zap_bytes > 0)
- continue;
-
- tlb_finish_mmu(*tlbp, tlb_start, start);
-
- if (need_resched() ||
- need_lockbreak(&mm->page_table_lock) ||
- (i_mmap_lock && need_lockbreak(i_mmap_lock))) {
- if (i_mmap_lock) {
- /* must reset count of rss freed */
- *tlbp = tlb_gather_mmu(mm, fullmm);
- details->break_addr = start;
- goto out;
- }
- spin_unlock(&mm->page_table_lock);
- cond_resched();
- spin_lock(&mm->page_table_lock);
- }
-
- *tlbp = tlb_gather_mmu(mm, fullmm);
- tlb_start_valid = 0;
- zap_bytes = ZAP_BLOCK_SIZE;
- }
- }
-out:
- return ret;
-}
-
-/**
- * zap_page_range - remove user pages in a given range
- * @vma: vm_area_struct holding the applicable pages
- * @address: starting address of pages to zap
- * @size: number of bytes to zap
- * @details: details of nonlinear truncation or shared cache invalidation
- */
-void zap_page_range(struct vm_area_struct *vma, unsigned long address,
- unsigned long size, struct zap_details *details)
-{
- struct mm_struct *mm = vma->vm_mm;
- struct mmu_gather *tlb;
- unsigned long end = address + size;
- unsigned long nr_accounted = 0;
-
- if (is_vm_hugetlb_page(vma)) {
- zap_hugepage_range(vma, address, size);
- return;
- }
-
- lru_add_drain();
- spin_lock(&mm->page_table_lock);
- tlb = tlb_gather_mmu(mm, 0);
- unmap_vmas(&tlb, mm, vma, address, end, &nr_accounted, details);
- tlb_finish_mmu(tlb, address, end);
- acct_update_integrals();
- spin_unlock(&mm->page_table_lock);
-}
-
-/*
- * Do a quick page-table lookup for a single page.
- * mm->page_table_lock must be held.
- */
-static struct page *
-__follow_page(struct mm_struct *mm, unsigned long address, int read, int write)
-{
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *ptep, pte;
- unsigned long pfn;
- struct page *page;
-
- page = follow_huge_addr(mm, address, write);
- if (! IS_ERR(page))
- return page;
-
- pgd = pgd_offset(mm, address);
- if (pgd_none(*pgd) || unlikely(pgd_bad(*pgd)))
- goto out;
-
- pud = pud_offset(pgd, address);
- if (pud_none(*pud) || unlikely(pud_bad(*pud)))
- goto out;
-
- pmd = pmd_offset(pud, address);
- if (pmd_none(*pmd) || unlikely(pmd_bad(*pmd)))
- goto out;
- if (pmd_huge(*pmd))
- return follow_huge_pmd(mm, address, pmd, write);
-
- ptep = pte_offset_map(pmd, address);
- if (!ptep)
- goto out;
-
- pte = *ptep;
- pte_unmap(ptep);
- if (pte_present(pte)) {
- if (write && !pte_write(pte))
- goto out;
- if (read && !pte_read(pte))
- goto out;
- pfn = pte_pfn(pte);
- if (pfn_valid(pfn)) {
- page = pfn_to_page(pfn);
- if (write && !pte_dirty(pte) && !PageDirty(page))
- set_page_dirty(page);
- mark_page_accessed(page);
- return page;
- }
- }
-
-out:
- return NULL;
-}
-
-struct page *
-follow_page(struct mm_struct *mm, unsigned long address, int write)
-{
- return __follow_page(mm, address, /*read*/0, write);
-}
-
-int
-check_user_page_readable(struct mm_struct *mm, unsigned long address)
-{
- return __follow_page(mm, address, /*read*/1, /*write*/0) != NULL;
-}
-
-EXPORT_SYMBOL(check_user_page_readable);
-
-/*
- * Given a physical address, is there a useful struct page pointing to
- * it? This may become more complex in the future if we start dealing
- * with IO-aperture pages for direct-IO.
- */
-
-static inline struct page *get_page_map(struct page *page)
-{
- if (!pfn_valid(page_to_pfn(page)))
- return NULL;
- return page;
-}
-
-
-static inline int
-untouched_anonymous_page(struct mm_struct* mm, struct vm_area_struct *vma,
- unsigned long address)
-{
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
-
- /* Check if the vma is for an anonymous mapping. */
- if (vma->vm_ops && vma->vm_ops->nopage)
- return 0;
-
- /* Check if page directory entry exists. */
- pgd = pgd_offset(mm, address);
- if (pgd_none(*pgd) || unlikely(pgd_bad(*pgd)))
- return 1;
-
- pud = pud_offset(pgd, address);
- if (pud_none(*pud) || unlikely(pud_bad(*pud)))
- return 1;
-
- /* Check if page middle directory entry exists. */
- pmd = pmd_offset(pud, address);
- if (pmd_none(*pmd) || unlikely(pmd_bad(*pmd)))
- return 1;
-
- /* There is a pte slot for 'address' in 'mm'. */
- return 0;
-}
-
-
-int get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
- unsigned long start, int len, int write, int force,
- struct page **pages, struct vm_area_struct **vmas)
-{
- int i;
- unsigned int flags;
-
- /*
- * Require read or write permissions.
- * If 'force' is set, we only require the "MAY" flags.
- */
- flags = write ? (VM_WRITE | VM_MAYWRITE) : (VM_READ | VM_MAYREAD);
- flags &= force ? (VM_MAYREAD | VM_MAYWRITE) : (VM_READ | VM_WRITE);
- i = 0;
-
- do {
- struct vm_area_struct * vma;
-
- vma = find_extend_vma(mm, start);
- if (!vma && in_gate_area(tsk, start)) {
- unsigned long pg = start & PAGE_MASK;
- struct vm_area_struct *gate_vma = get_gate_vma(tsk);
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *pte;
- if (write) /* user gate pages are read-only */
- return i ? : -EFAULT;
- if (pg > TASK_SIZE)
- pgd = pgd_offset_k(pg);
- else
- pgd = pgd_offset_gate(mm, pg);
- BUG_ON(pgd_none(*pgd));
- pud = pud_offset(pgd, pg);
- BUG_ON(pud_none(*pud));
- pmd = pmd_offset(pud, pg);
- BUG_ON(pmd_none(*pmd));
- pte = pte_offset_map(pmd, pg);
- BUG_ON(pte_none(*pte));
- if (pages) {
- pages[i] = pte_page(*pte);
- get_page(pages[i]);
- }
- pte_unmap(pte);
- if (vmas)
- vmas[i] = gate_vma;
- i++;
- start += PAGE_SIZE;
- len--;
- continue;
- }
-
- if (vma && (vma->vm_flags & VM_FOREIGN))
- {
- struct page **map = vma->vm_private_data;
- int offset = (start - vma->vm_start) >> PAGE_SHIFT;
-
- if (map[offset] != NULL) {
- if (pages) {
- pages[i] = map[offset];
- }
- if (vmas)
- vmas[i] = vma;
- i++;
- start += PAGE_SIZE;
- len--;
- continue;
- }
- }
-
- if (!vma || (vma->vm_flags & VM_IO)
- || !(flags & vma->vm_flags))
- return i ? : -EFAULT;
-
- if (is_vm_hugetlb_page(vma)) {
- i = follow_hugetlb_page(mm, vma, pages, vmas,
- &start, &len, i);
- continue;
- }
- spin_lock(&mm->page_table_lock);
- do {
- struct page *map;
- int lookup_write = write;
-
- cond_resched_lock(&mm->page_table_lock);
- while (!(map = follow_page(mm, start, lookup_write))) {
- /*
- * Shortcut for anonymous pages. We don't want
- * to force the creation of pages tables for
- * insanly big anonymously mapped areas that
- * nobody touched so far. This is important
- * for doing a core dump for these mappings.
- */
- if (!lookup_write &&
- untouched_anonymous_page(mm,vma,start)) {
- map = ZERO_PAGE(start);
- break;
- }
- spin_unlock(&mm->page_table_lock);
- switch (handle_mm_fault(mm,vma,start,write)) {
- case VM_FAULT_MINOR:
- tsk->min_flt++;
- break;
- case VM_FAULT_MAJOR:
- tsk->maj_flt++;
- break;
- case VM_FAULT_SIGBUS:
- return i ? i : -EFAULT;
- case VM_FAULT_OOM:
- return i ? i : -ENOMEM;
- default:
- BUG();
- }
- /*
- * Now that we have performed a write fault
- * and surely no longer have a shared page we
- * shouldn't write, we shouldn't ignore an
- * unwritable page in the page table if
- * we are forcing write access.
- */
- lookup_write = write && !force;
- spin_lock(&mm->page_table_lock);
- }
- if (pages) {
- pages[i] = get_page_map(map);
- if (!pages[i]) {
- spin_unlock(&mm->page_table_lock);
- while (i--)
- page_cache_release(pages[i]);
- i = -EFAULT;
- goto out;
- }
- flush_dcache_page(pages[i]);
- if (!PageReserved(pages[i]))
- page_cache_get(pages[i]);
- }
- if (vmas)
- vmas[i] = vma;
- i++;
- start += PAGE_SIZE;
- len--;
- } while(len && start < vma->vm_end);
- spin_unlock(&mm->page_table_lock);
- } while(len);
-out:
- return i;
-}
-
-EXPORT_SYMBOL(get_user_pages);
-
-static void zeromap_pte_range(pte_t * pte, unsigned long address,
- unsigned long size, pgprot_t prot)
-{
- unsigned long end;
-
- address &= ~PMD_MASK;
- end = address + size;
- if (end > PMD_SIZE)
- end = PMD_SIZE;
- do {
- pte_t zero_pte = pte_wrprotect(mk_pte(ZERO_PAGE(address),
prot));
- BUG_ON(!pte_none(*pte));
- set_pte(pte, zero_pte);
- address += PAGE_SIZE;
- pte++;
- } while (address && (address < end));
-}
-
-static inline int zeromap_pmd_range(struct mm_struct *mm, pmd_t * pmd,
- unsigned long address, unsigned long size, pgprot_t prot)
-{
- unsigned long base, end;
-
- base = address & PUD_MASK;
- address &= ~PUD_MASK;
- end = address + size;
- if (end > PUD_SIZE)
- end = PUD_SIZE;
- do {
- pte_t * pte = pte_alloc_map(mm, pmd, base + address);
- if (!pte)
- return -ENOMEM;
- zeromap_pte_range(pte, base + address, end - address, prot);
- pte_unmap(pte);
- address = (address + PMD_SIZE) & PMD_MASK;
- pmd++;
- } while (address && (address < end));
- return 0;
-}
-
-static inline int zeromap_pud_range(struct mm_struct *mm, pud_t * pud,
- unsigned long address,
- unsigned long size, pgprot_t prot)
-{
- unsigned long base, end;
- int error = 0;
-
- base = address & PGDIR_MASK;
- address &= ~PGDIR_MASK;
- end = address + size;
- if (end > PGDIR_SIZE)
- end = PGDIR_SIZE;
- do {
- pmd_t * pmd = pmd_alloc(mm, pud, base + address);
- error = -ENOMEM;
- if (!pmd)
- break;
- error = zeromap_pmd_range(mm, pmd, base + address,
- end - address, prot);
- if (error)
- break;
- address = (address + PUD_SIZE) & PUD_MASK;
- pud++;
- } while (address && (address < end));
- return 0;
-}
-
-int zeromap_page_range(struct vm_area_struct *vma, unsigned long address,
- unsigned long size, pgprot_t prot)
-{
- int i;
- int error = 0;
- pgd_t * pgd;
- unsigned long beg = address;
- unsigned long end = address + size;
- unsigned long next;
- struct mm_struct *mm = vma->vm_mm;
-
- pgd = pgd_offset(mm, address);
- flush_cache_range(vma, beg, end);
- BUG_ON(address >= end);
- BUG_ON(end > vma->vm_end);
-
- spin_lock(&mm->page_table_lock);
- for (i = pgd_index(address); i <= pgd_index(end-1); i++) {
- pud_t *pud = pud_alloc(mm, pgd, address);
- error = -ENOMEM;
- if (!pud)
- break;
- next = (address + PGDIR_SIZE) & PGDIR_MASK;
- if (next <= beg || next > end)
- next = end;
- error = zeromap_pud_range(mm, pud, address,
- next - address, prot);
- if (error)
- break;
- address = next;
- pgd++;
- }
- /*
- * Why flush? zeromap_pte_range has a BUG_ON for !pte_none()
- */
- flush_tlb_range(vma, beg, end);
- spin_unlock(&mm->page_table_lock);
- return error;
-}
-
-/*
- * maps a range of physical memory into the requested pages. the old
- * mappings are removed. any references to nonexistent pages results
- * in null mappings (currently treated as "copy-on-access")
- */
-static inline void
-remap_pte_range(pte_t * pte, unsigned long address, unsigned long size,
- unsigned long pfn, pgprot_t prot)
-{
- unsigned long end;
-
- address &= ~PMD_MASK;
- end = address + size;
- if (end > PMD_SIZE)
- end = PMD_SIZE;
- do {
- BUG_ON(!pte_none(*pte));
- if (!pfn_valid(pfn) || PageReserved(pfn_to_page(pfn)))
- set_pte(pte, pfn_pte(pfn, prot));
- address += PAGE_SIZE;
- pfn++;
- pte++;
- } while (address && (address < end));
-}
-
-static inline int
-remap_pmd_range(struct mm_struct *mm, pmd_t * pmd, unsigned long address,
- unsigned long size, unsigned long pfn, pgprot_t prot)
-{
- unsigned long base, end;
-
- base = address & PUD_MASK;
- address &= ~PUD_MASK;
- end = address + size;
- if (end > PUD_SIZE)
- end = PUD_SIZE;
- pfn -= (address >> PAGE_SHIFT);
- do {
- pte_t * pte = pte_alloc_map(mm, pmd, base + address);
- if (!pte)
- return -ENOMEM;
- remap_pte_range(pte, base + address, end - address,
- (address >> PAGE_SHIFT) + pfn, prot);
- pte_unmap(pte);
- address = (address + PMD_SIZE) & PMD_MASK;
- pmd++;
- } while (address && (address < end));
- return 0;
-}
-
-static inline int remap_pud_range(struct mm_struct *mm, pud_t * pud,
- unsigned long address, unsigned long size,
- unsigned long pfn, pgprot_t prot)
-{
- unsigned long base, end;
- int error;
-
- base = address & PGDIR_MASK;
- address &= ~PGDIR_MASK;
- end = address + size;
- if (end > PGDIR_SIZE)
- end = PGDIR_SIZE;
- pfn -= address >> PAGE_SHIFT;
- do {
- pmd_t *pmd = pmd_alloc(mm, pud, base+address);
- error = -ENOMEM;
- if (!pmd)
- break;
- error = remap_pmd_range(mm, pmd, base + address, end - address,
- (address >> PAGE_SHIFT) + pfn, prot);
- if (error)
- break;
- address = (address + PUD_SIZE) & PUD_MASK;
- pud++;
- } while (address && (address < end));
- return error;
-}
-
-/* Note: this is only safe if the mm semaphore is held when called. */
-int remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
- unsigned long pfn, unsigned long size, pgprot_t prot)
-{
- int error = 0;
- pgd_t *pgd;
- unsigned long beg = from;
- unsigned long end = from + size;
- unsigned long next;
- struct mm_struct *mm = vma->vm_mm;
- int i;
-
- pfn -= from >> PAGE_SHIFT;
- pgd = pgd_offset(mm, from);
- flush_cache_range(vma, beg, end);
- BUG_ON(from >= end);
-
- /*
- * Physically remapped pages are special. Tell the
- * rest of the world about it:
- * VM_IO tells people not to look at these pages
- * (accesses can have side effects).
- * VM_RESERVED tells swapout not to try to touch
- * this region.
- */
- vma->vm_flags |= VM_IO | VM_RESERVED;
-
- spin_lock(&mm->page_table_lock);
- for (i = pgd_index(beg); i <= pgd_index(end-1); i++) {
- pud_t *pud = pud_alloc(mm, pgd, from);
- error = -ENOMEM;
- if (!pud)
- break;
- next = (from + PGDIR_SIZE) & PGDIR_MASK;
- if (next > end || next <= from)
- next = end;
- error = remap_pud_range(mm, pud, from, end - from,
- pfn + (from >> PAGE_SHIFT), prot);
- if (error)
- break;
- from = next;
- pgd++;
- }
- /*
- * Why flush? remap_pte_range has a BUG_ON for !pte_none()
- */
- flush_tlb_range(vma, beg, end);
- spin_unlock(&mm->page_table_lock);
-
- return error;
-}
-
-EXPORT_SYMBOL(remap_pfn_range);
-
-/*
- * Do pte_mkwrite, but only if the vma says VM_WRITE. We do this when
- * servicing faults for write access. In the normal case, do always want
- * pte_mkwrite. But get_user_pages can cause write faults for mappings
- * that do not have writing enabled, when used by access_process_vm.
- */
-static inline pte_t maybe_mkwrite(pte_t pte, struct vm_area_struct *vma)
-{
- if (likely(vma->vm_flags & VM_WRITE))
- pte = pte_mkwrite(pte);
- return pte;
-}
-
-/*
- * We hold the mm semaphore for reading and vma->vm_mm->page_table_lock
- */
-static inline void break_cow(struct vm_area_struct * vma, struct page *
new_page, unsigned long address,
- pte_t *page_table)
-{
- pte_t entry;
-
- flush_cache_page(vma, address);
- entry = maybe_mkwrite(pte_mkdirty(mk_pte(new_page, vma->vm_page_prot)),
- vma);
- ptep_establish(vma, address, page_table, entry);
- update_mmu_cache(vma, address, entry);
-}
-
-/*
- * This routine handles present pages, when users try to write
- * to a shared page. It is done by copying the page to a new address
- * and decrementing the shared-page counter for the old page.
- *
- * Goto-purists beware: the only reason for goto's here is that it results
- * in better assembly code.. The "default" path will see no jumps at all.
- *
- * Note that this routine assumes that the protection checks have been
- * done by the caller (the low-level page fault routine in most cases).
- * Thus we can safely just mark it writable once we've done any necessary
- * COW.
- *
- * We also mark the page dirty at this point even though the page will
- * change only once the write actually happens. This avoids a few races,
- * and potentially makes it more efficient.
- *
- * We hold the mm semaphore and the page_table_lock on entry and exit
- * with the page_table_lock released.
- */
-static int do_wp_page(struct mm_struct *mm, struct vm_area_struct * vma,
- unsigned long address, pte_t *page_table, pmd_t *pmd, pte_t pte)
-{
- struct page *old_page, *new_page;
- unsigned long pfn = pte_pfn(pte);
- pte_t entry;
-
- if (unlikely(!pfn_valid(pfn))) {
- /*
- * This should really halt the system so it can be debugged or
- * at least the kernel stops what it's doing before it corrupts
- * data, but for the moment just pretend this is OOM.
- */
- pte_unmap(page_table);
- printk(KERN_ERR "do_wp_page: bogus page at address %08lx\n",
- address);
- spin_unlock(&mm->page_table_lock);
- return VM_FAULT_OOM;
- }
- old_page = pfn_to_page(pfn);
-
- if (!TestSetPageLocked(old_page)) {
- int reuse = can_share_swap_page(old_page);
- unlock_page(old_page);
- if (reuse) {
- flush_cache_page(vma, address);
- entry = maybe_mkwrite(pte_mkyoung(pte_mkdirty(pte)),
- vma);
- ptep_set_access_flags(vma, address, page_table, entry,
1);
- update_mmu_cache(vma, address, entry);
- pte_unmap(page_table);
- spin_unlock(&mm->page_table_lock);
- return VM_FAULT_MINOR;
- }
- }
- pte_unmap(page_table);
-
- /*
- * Ok, we need to copy. Oh, well..
- */
- if (!PageReserved(old_page))
- page_cache_get(old_page);
- spin_unlock(&mm->page_table_lock);
-
- if (unlikely(anon_vma_prepare(vma)))
- goto no_new_page;
- if (old_page == ZERO_PAGE(address)) {
- new_page = alloc_zeroed_user_highpage(vma, address);
- if (!new_page)
- goto no_new_page;
- } else {
- new_page = alloc_page_vma(GFP_HIGHUSER, vma, address);
- if (!new_page)
- goto no_new_page;
- copy_user_highpage(new_page, old_page, address);
- }
- /*
- * Re-check the pte - we dropped the lock
- */
- spin_lock(&mm->page_table_lock);
- page_table = pte_offset_map(pmd, address);
- if (likely(pte_same(*page_table, pte))) {
- if (PageAnon(old_page))
- mm->anon_rss--;
- if (PageReserved(old_page)) {
- ++mm->rss;
- acct_update_integrals();
- update_mem_hiwater();
- } else
- page_remove_rmap(old_page);
- break_cow(vma, new_page, address, page_table);
- lru_cache_add_active(new_page);
- page_add_anon_rmap(new_page, vma, address);
-
- /* Free the old page.. */
- new_page = old_page;
- }
- pte_unmap(page_table);
- page_cache_release(new_page);
- page_cache_release(old_page);
- spin_unlock(&mm->page_table_lock);
- return VM_FAULT_MINOR;
-
-no_new_page:
- page_cache_release(old_page);
- return VM_FAULT_OOM;
-}
-
-/*
- * Helper functions for unmap_mapping_range().
- *
- * __ Notes on dropping i_mmap_lock to reduce latency while unmapping __
- *
- * We have to restart searching the prio_tree whenever we drop the lock,
- * since the iterator is only valid while the lock is held, and anyway
- * a later vma might be split and reinserted earlier while lock dropped.
- *
- * The list of nonlinear vmas could be handled more efficiently, using
- * a placeholder, but handle it in the same way until a need is shown.
- * It is important to search the prio_tree before nonlinear list: a vma
- * may become nonlinear and be shifted from prio_tree to nonlinear list
- * while the lock is dropped; but never shifted from list to prio_tree.
- *
- * In order to make forward progress despite restarting the search,
- * vm_truncate_count is used to mark a vma as now dealt with, so we can
- * quickly skip it next time around. Since the prio_tree search only
- * shows us those vmas affected by unmapping the range in question, we
- * can't efficiently keep all vmas in step with mapping->truncate_count:
- * so instead reset them all whenever it wraps back to 0 (then go to 1).
- * mapping->truncate_count and vma->vm_truncate_count are protected by
- * i_mmap_lock.
- *
- * In order to make forward progress despite repeatedly restarting some
- * large vma, note the break_addr set by unmap_vmas when it breaks out:
- * and restart from that address when we reach that vma again. It might
- * have been split or merged, shrunk or extended, but never shifted: so
- * restart_addr remains valid so long as it remains in the vma's range.
- * unmap_mapping_range forces truncate_count to leap over page-aligned
- * values so we can save vma's restart_addr in its truncate_count field.
- */
-#define is_restart_addr(truncate_count) (!((truncate_count) & ~PAGE_MASK))
-
-static void reset_vma_truncate_counts(struct address_space *mapping)
-{
- struct vm_area_struct *vma;
- struct prio_tree_iter iter;
-
- vma_prio_tree_foreach(vma, &iter, &mapping->i_mmap, 0, ULONG_MAX)
- vma->vm_truncate_count = 0;
- list_for_each_entry(vma, &mapping->i_mmap_nonlinear, shared.vm_set.list)
- vma->vm_truncate_count = 0;
-}
-
-static int unmap_mapping_range_vma(struct vm_area_struct *vma,
- unsigned long start_addr, unsigned long end_addr,
- struct zap_details *details)
-{
- unsigned long restart_addr;
- int need_break;
-
-again:
- restart_addr = vma->vm_truncate_count;
- if (is_restart_addr(restart_addr) && start_addr < restart_addr) {
- start_addr = restart_addr;
- if (start_addr >= end_addr) {
- /* Top of vma has been split off since last time */
- vma->vm_truncate_count = details->truncate_count;
- return 0;
- }
- }
-
- details->break_addr = end_addr;
- zap_page_range(vma, start_addr, end_addr - start_addr, details);
-
- /*
- * We cannot rely on the break test in unmap_vmas:
- * on the one hand, we don't want to restart our loop
- * just because that broke out for the page_table_lock;
- * on the other hand, it does no test when vma is small.
- */
- need_break = need_resched() ||
- need_lockbreak(details->i_mmap_lock);
-
- if (details->break_addr >= end_addr) {
- /* We have now completed this vma: mark it so */
- vma->vm_truncate_count = details->truncate_count;
- if (!need_break)
- return 0;
- } else {
- /* Note restart_addr in vma's truncate_count field */
- vma->vm_truncate_count = details->break_addr;
- if (!need_break)
- goto again;
- }
-
- spin_unlock(details->i_mmap_lock);
- cond_resched();
- spin_lock(details->i_mmap_lock);
- return -EINTR;
-}
-
-static inline void unmap_mapping_range_tree(struct prio_tree_root *root,
- struct zap_details *details)
-{
- struct vm_area_struct *vma;
- struct prio_tree_iter iter;
- pgoff_t vba, vea, zba, zea;
-
-restart:
- vma_prio_tree_foreach(vma, &iter, root,
- details->first_index, details->last_index) {
- /* Skip quickly over those we have already dealt with */
- if (vma->vm_truncate_count == details->truncate_count)
- continue;
-
- vba = vma->vm_pgoff;
- vea = vba + ((vma->vm_end - vma->vm_start) >> PAGE_SHIFT) - 1;
- /* Assume for now that PAGE_CACHE_SHIFT == PAGE_SHIFT */
- zba = details->first_index;
- if (zba < vba)
- zba = vba;
- zea = details->last_index;
- if (zea > vea)
- zea = vea;
-
- if (unmap_mapping_range_vma(vma,
- ((zba - vba) << PAGE_SHIFT) + vma->vm_start,
- ((zea - vba + 1) << PAGE_SHIFT) + vma->vm_start,
- details) < 0)
- goto restart;
- }
-}
-
-static inline void unmap_mapping_range_list(struct list_head *head,
- struct zap_details *details)
-{
- struct vm_area_struct *vma;
-
- /*
- * In nonlinear VMAs there is no correspondence between virtual address
- * offset and file offset. So we must perform an exhaustive search
- * across *all* the pages in each nonlinear VMA, not just the pages
- * whose virtual address lies outside the file truncation point.
- */
-restart:
- list_for_each_entry(vma, head, shared.vm_set.list) {
- /* Skip quickly over those we have already dealt with */
- if (vma->vm_truncate_count == details->truncate_count)
- continue;
- details->nonlinear_vma = vma;
- if (unmap_mapping_range_vma(vma, vma->vm_start,
- vma->vm_end, details) < 0)
- goto restart;
- }
-}
-
-/**
- * unmap_mapping_range - unmap the portion of all mmaps
- * in the specified address_space corresponding to the specified
- * page range in the underlying file.
- * @address_space: the address space containing mmaps to be unmapped.
- * @holebegin: byte in first page to unmap, relative to the start of
- * the underlying file. This will be rounded down to a PAGE_SIZE
- * boundary. Note that this is different from vmtruncate(), which
- * must keep the partial page. In contrast, we must get rid of
- * partial pages.
- * @holelen: size of prospective hole in bytes. This will be rounded
- * up to a PAGE_SIZE boundary. A holelen of zero truncates to the
- * end of the file.
- * @even_cows: 1 when truncating a file, unmap even private COWed pages;
- * but 0 when invalidating pagecache, don't throw away private data.
- */
-void unmap_mapping_range(struct address_space *mapping,
- loff_t const holebegin, loff_t const holelen, int even_cows)
-{
- struct zap_details details;
- pgoff_t hba = holebegin >> PAGE_SHIFT;
- pgoff_t hlen = (holelen + PAGE_SIZE - 1) >> PAGE_SHIFT;
-
- /* Check for overflow. */
- if (sizeof(holelen) > sizeof(hlen)) {
- long long holeend =
- (holebegin + holelen + PAGE_SIZE - 1) >> PAGE_SHIFT;
- if (holeend & ~(long long)ULONG_MAX)
- hlen = ULONG_MAX - hba + 1;
- }
-
- details.check_mapping = even_cows? NULL: mapping;
- details.nonlinear_vma = NULL;
- details.first_index = hba;
- details.last_index = hba + hlen - 1;
- if (details.last_index < details.first_index)
- details.last_index = ULONG_MAX;
- details.i_mmap_lock = &mapping->i_mmap_lock;
-
- spin_lock(&mapping->i_mmap_lock);
-
- /* serialize i_size write against truncate_count write */
- smp_wmb();
- /* Protect against page faults, and endless unmapping loops */
- mapping->truncate_count++;
- /*
- * For archs where spin_lock has inclusive semantics like ia64
- * this smp_mb() will prevent to read pagetable contents
- * before the truncate_count increment is visible to
- * other cpus.
- */
- smp_mb();
- if (unlikely(is_restart_addr(mapping->truncate_count))) {
- if (mapping->truncate_count == 0)
- reset_vma_truncate_counts(mapping);
- mapping->truncate_count++;
- }
- details.truncate_count = mapping->truncate_count;
-
- if (unlikely(!prio_tree_empty(&mapping->i_mmap)))
- unmap_mapping_range_tree(&mapping->i_mmap, &details);
- if (unlikely(!list_empty(&mapping->i_mmap_nonlinear)))
- unmap_mapping_range_list(&mapping->i_mmap_nonlinear, &details);
- spin_unlock(&mapping->i_mmap_lock);
-}
-EXPORT_SYMBOL(unmap_mapping_range);
-
-/*
- * Handle all mappings that got truncated by a "truncate()"
- * system call.
- *
- * NOTE! We have to be ready to update the memory sharing
- * between the file and the memory map for a potential last
- * incomplete page. Ugly, but necessary.
- */
-int vmtruncate(struct inode * inode, loff_t offset)
-{
- struct address_space *mapping = inode->i_mapping;
- unsigned long limit;
-
- if (inode->i_size < offset)
- goto do_expand;
- /*
- * truncation of in-use swapfiles is disallowed - it would cause
- * subsequent swapout to scribble on the now-freed blocks.
- */
- if (IS_SWAPFILE(inode))
- goto out_busy;
- i_size_write(inode, offset);
- unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1);
- truncate_inode_pages(mapping, offset);
- goto out_truncate;
-
-do_expand:
- limit = current->signal->rlim[RLIMIT_FSIZE].rlim_cur;
- if (limit != RLIM_INFINITY && offset > limit)
- goto out_sig;
- if (offset > inode->i_sb->s_maxbytes)
- goto out_big;
- i_size_write(inode, offset);
-
-out_truncate:
- if (inode->i_op && inode->i_op->truncate)
- inode->i_op->truncate(inode);
- return 0;
-out_sig:
- send_sig(SIGXFSZ, current, 0);
-out_big:
- return -EFBIG;
-out_busy:
- return -ETXTBSY;
-}
-
-EXPORT_SYMBOL(vmtruncate);
-
-/*
- * Primitive swap readahead code. We simply read an aligned block of
- * (1 << page_cluster) entries in the swap area. This method is chosen
- * because it doesn't cost us any seek time. We also make sure to queue
- * the 'original' request together with the readahead ones...
- *
- * This has been extended to use the NUMA policies from the mm triggering
- * the readahead.
- *
- * Caller must hold down_read on the vma->vm_mm if vma is not NULL.
- */
-void swapin_readahead(swp_entry_t entry, unsigned long addr,struct
vm_area_struct *vma)
-{
-#ifdef CONFIG_NUMA
- struct vm_area_struct *next_vma = vma ? vma->vm_next : NULL;
-#endif
- int i, num;
- struct page *new_page;
- unsigned long offset;
-
- /*
- * Get the number of handles we should do readahead io to.
- */
- num = valid_swaphandles(entry, &offset);
- for (i = 0; i < num; offset++, i++) {
- /* Ok, do the async read-ahead now */
- new_page = read_swap_cache_async(swp_entry(swp_type(entry),
- offset), vma, addr);
- if (!new_page)
- break;
- page_cache_release(new_page);
-#ifdef CONFIG_NUMA
- /*
- * Find the next applicable VMA for the NUMA policy.
- */
- addr += PAGE_SIZE;
- if (addr == 0)
- vma = NULL;
- if (vma) {
- if (addr >= vma->vm_end) {
- vma = next_vma;
- next_vma = vma ? vma->vm_next : NULL;
- }
- if (vma && addr < vma->vm_start)
- vma = NULL;
- } else {
- if (next_vma && addr >= next_vma->vm_start) {
- vma = next_vma;
- next_vma = vma->vm_next;
- }
- }
-#endif
- }
- lru_add_drain(); /* Push any new pages onto the LRU now */
-}
-
-/*
- * We hold the mm semaphore and the page_table_lock on entry and
- * should release the pagetable lock on exit..
- */
-static int do_swap_page(struct mm_struct * mm,
- struct vm_area_struct * vma, unsigned long address,
- pte_t *page_table, pmd_t *pmd, pte_t orig_pte, int write_access)
-{
- struct page *page;
- swp_entry_t entry = pte_to_swp_entry(orig_pte);
- pte_t pte;
- int ret = VM_FAULT_MINOR;
-
- pte_unmap(page_table);
- spin_unlock(&mm->page_table_lock);
- page = lookup_swap_cache(entry);
- if (!page) {
- swapin_readahead(entry, address, vma);
- page = read_swap_cache_async(entry, vma, address);
- if (!page) {
- /*
- * Back out if somebody else faulted in this pte while
- * we released the page table lock.
- */
- spin_lock(&mm->page_table_lock);
- page_table = pte_offset_map(pmd, address);
- if (likely(pte_same(*page_table, orig_pte)))
- ret = VM_FAULT_OOM;
- else
- ret = VM_FAULT_MINOR;
- pte_unmap(page_table);
- spin_unlock(&mm->page_table_lock);
- goto out;
- }
-
- /* Had to read the page from swap area: Major fault */
- ret = VM_FAULT_MAJOR;
- inc_page_state(pgmajfault);
- grab_swap_token();
- }
-
- mark_page_accessed(page);
- lock_page(page);
-
- /*
- * Back out if somebody else faulted in this pte while we
- * released the page table lock.
- */
- spin_lock(&mm->page_table_lock);
- page_table = pte_offset_map(pmd, address);
- if (unlikely(!pte_same(*page_table, orig_pte))) {
- pte_unmap(page_table);
- spin_unlock(&mm->page_table_lock);
- unlock_page(page);
- page_cache_release(page);
- ret = VM_FAULT_MINOR;
- goto out;
- }
-
- /* The page isn't present yet, go ahead with the fault. */
-
- swap_free(entry);
- if (vm_swap_full())
- remove_exclusive_swap_page(page);
-
- mm->rss++;
- acct_update_integrals();
- update_mem_hiwater();
-
- pte = mk_pte(page, vma->vm_page_prot);
- if (write_access && can_share_swap_page(page)) {
- pte = maybe_mkwrite(pte_mkdirty(pte), vma);
- write_access = 0;
- }
- unlock_page(page);
-
- flush_icache_page(vma, page);
- set_pte(page_table, pte);
- page_add_anon_rmap(page, vma, address);
-
- if (write_access) {
- if (do_wp_page(mm, vma, address,
- page_table, pmd, pte) == VM_FAULT_OOM)
- ret = VM_FAULT_OOM;
- goto out;
- }
-
- /* No need to invalidate - it was non-present before */
- update_mmu_cache(vma, address, pte);
- pte_unmap(page_table);
- spin_unlock(&mm->page_table_lock);
-out:
- return ret;
-}
-
-/*
- * We are called with the MM semaphore and page_table_lock
- * spinlock held to protect against concurrent faults in
- * multithreaded programs.
- */
-static int
-do_anonymous_page(struct mm_struct *mm, struct vm_area_struct *vma,
- pte_t *page_table, pmd_t *pmd, int write_access,
- unsigned long addr)
-{
- pte_t entry;
- struct page * page = ZERO_PAGE(addr);
-
- /* Read-only mapping of ZERO_PAGE. */
- entry = pte_wrprotect(mk_pte(ZERO_PAGE(addr), vma->vm_page_prot));
-
- /* ..except if it's a write access */
- if (write_access) {
- /* Allocate our own private page. */
- pte_unmap(page_table);
- spin_unlock(&mm->page_table_lock);
-
- if (unlikely(anon_vma_prepare(vma)))
- goto no_mem;
- page = alloc_zeroed_user_highpage(vma, addr);
- if (!page)
- goto no_mem;
-
- spin_lock(&mm->page_table_lock);
- page_table = pte_offset_map(pmd, addr);
-
- if (!pte_none(*page_table)) {
- pte_unmap(page_table);
- page_cache_release(page);
- spin_unlock(&mm->page_table_lock);
- goto out;
- }
- mm->rss++;
- acct_update_integrals();
- update_mem_hiwater();
- entry = maybe_mkwrite(pte_mkdirty(mk_pte(page,
- vma->vm_page_prot)),
- vma);
- lru_cache_add_active(page);
- SetPageReferenced(page);
- page_add_anon_rmap(page, vma, addr);
- }
-
- ptep_establish_new(vma, addr, page_table, entry);
- pte_unmap(page_table);
-
- /* No need to invalidate - it was non-present before */
- update_mmu_cache(vma, addr, entry);
- spin_unlock(&mm->page_table_lock);
-out:
- return VM_FAULT_MINOR;
-no_mem:
- return VM_FAULT_OOM;
-}
-
-/*
- * do_no_page() tries to create a new page mapping. It aggressively
- * tries to share with existing pages, but makes a separate copy if
- * the "write_access" parameter is true in order to avoid the next
- * page fault.
- *
- * As this is called only for pages that do not currently exist, we
- * do not need to flush old virtual caches or the TLB.
- *
- * This is called with the MM semaphore held and the page table
- * spinlock held. Exit with the spinlock released.
- */
-static int
-do_no_page(struct mm_struct *mm, struct vm_area_struct *vma,
- unsigned long address, int write_access, pte_t *page_table, pmd_t *pmd)
-{
- struct page * new_page;
- struct address_space *mapping = NULL;
- pte_t entry;
- unsigned int sequence = 0;
- int ret = VM_FAULT_MINOR;
- int anon = 0;
-
- if (!vma->vm_ops || !vma->vm_ops->nopage)
- return do_anonymous_page(mm, vma, page_table,
- pmd, write_access, address);
- pte_unmap(page_table);
- spin_unlock(&mm->page_table_lock);
-
- if (vma->vm_file) {
- mapping = vma->vm_file->f_mapping;
- sequence = mapping->truncate_count;
- smp_rmb(); /* serializes i_size against truncate_count */
- }
-retry:
- cond_resched();
- new_page = vma->vm_ops->nopage(vma, address & PAGE_MASK, &ret);
- /*
- * No smp_rmb is needed here as long as there's a full
- * spin_lock/unlock sequence inside the ->nopage callback
- * (for the pagecache lookup) that acts as an implicit
- * smp_mb() and prevents the i_size read to happen
- * after the next truncate_count read.
- */
-
- /* no page was available -- either SIGBUS or OOM */
- if (new_page == NOPAGE_SIGBUS)
- return VM_FAULT_SIGBUS;
- if (new_page == NOPAGE_OOM)
- return VM_FAULT_OOM;
-
- /*
- * Should we do an early C-O-W break?
- */
- if (write_access && !(vma->vm_flags & VM_SHARED)) {
- struct page *page;
-
- if (unlikely(anon_vma_prepare(vma)))
- goto oom;
- page = alloc_page_vma(GFP_HIGHUSER, vma, address);
- if (!page)
- goto oom;
- copy_user_highpage(page, new_page, address);
- page_cache_release(new_page);
- new_page = page;
- anon = 1;
- }
-
- spin_lock(&mm->page_table_lock);
- /*
- * For a file-backed vma, someone could have truncated or otherwise
- * invalidated this page. If unmap_mapping_range got called,
- * retry getting the page.
- */
- if (mapping && unlikely(sequence != mapping->truncate_count)) {
- sequence = mapping->truncate_count;
- spin_unlock(&mm->page_table_lock);
- page_cache_release(new_page);
- goto retry;
- }
- page_table = pte_offset_map(pmd, address);
-
- /*
- * This silly early PAGE_DIRTY setting removes a race
- * due to the bad i386 page protection. But it's valid
- * for other architectures too.
- *
- * Note that if write_access is true, we either now have
- * an exclusive copy of the page, or this is a shared mapping,
- * so we can make it writable and dirty to avoid having to
- * handle that later.
- */
- /* Only go through if we didn't race with anybody else... */
- if (pte_none(*page_table)) {
- if (!PageReserved(new_page))
- ++mm->rss;
- acct_update_integrals();
- update_mem_hiwater();
-
- flush_icache_page(vma, new_page);
- entry = mk_pte(new_page, vma->vm_page_prot);
- if (write_access)
- entry = maybe_mkwrite(pte_mkdirty(entry), vma);
- ptep_establish_new(vma, address, page_table, entry);
- if (anon) {
- lru_cache_add_active(new_page);
- page_add_anon_rmap(new_page, vma, address);
- } else
- page_add_file_rmap(new_page);
- pte_unmap(page_table);
- } else {
- /* One of our sibling threads was faster, back out. */
- pte_unmap(page_table);
- page_cache_release(new_page);
- spin_unlock(&mm->page_table_lock);
- goto out;
- }
-
- /* no need to invalidate: a not-present page shouldn't be cached */
- update_mmu_cache(vma, address, entry);
- spin_unlock(&mm->page_table_lock);
-out:
- return ret;
-oom:
- page_cache_release(new_page);
- ret = VM_FAULT_OOM;
- goto out;
-}
-
-/*
- * Fault of a previously existing named mapping. Repopulate the pte
- * from the encoded file_pte if possible. This enables swappable
- * nonlinear vmas.
- */
-static int do_file_page(struct mm_struct * mm, struct vm_area_struct * vma,
- unsigned long address, int write_access, pte_t *pte, pmd_t *pmd)
-{
- unsigned long pgoff;
- int err;
-
- BUG_ON(!vma->vm_ops || !vma->vm_ops->nopage);
- /*
- * Fall back to the linear mapping if the fs does not support
- * ->populate:
- */
- if (!vma->vm_ops || !vma->vm_ops->populate ||
- (write_access && !(vma->vm_flags & VM_SHARED))) {
- pte_clear(pte);
- return do_no_page(mm, vma, address, write_access, pte, pmd);
- }
-
- pgoff = pte_to_pgoff(*pte);
-
- pte_unmap(pte);
- spin_unlock(&mm->page_table_lock);
-
- err = vma->vm_ops->populate(vma, address & PAGE_MASK, PAGE_SIZE,
vma->vm_page_prot, pgoff, 0);
- if (err == -ENOMEM)
- return VM_FAULT_OOM;
- if (err)
- return VM_FAULT_SIGBUS;
- return VM_FAULT_MAJOR;
-}
-
-/*
- * These routines also need to handle stuff like marking pages dirty
- * and/or accessed for architectures that don't do it in hardware (most
- * RISC architectures). The early dirtying is also good on the i386.
- *
- * There is also a hook called "update_mmu_cache()" that architectures
- * with external mmu caches can use to update those (ie the Sparc or
- * PowerPC hashed page tables that act as extended TLBs).
- *
- * Note the "page_table_lock". It is to protect against kswapd removing
- * pages from under us. Note that kswapd only ever _removes_ pages, never
- * adds them. As such, once we have noticed that the page is not present,
- * we can drop the lock early.
- *
- * The adding of pages is protected by the MM semaphore (which we hold),
- * so we don't need to worry about a page being suddenly been added into
- * our VM.
- *
- * We enter with the pagetable spinlock held, we are supposed to
- * release it when done.
- */
-static inline int handle_pte_fault(struct mm_struct *mm,
- struct vm_area_struct * vma, unsigned long address,
- int write_access, pte_t *pte, pmd_t *pmd)
-{
- pte_t entry;
-
- entry = *pte;
- if (!pte_present(entry)) {
- /*
- * If it truly wasn't present, we know that kswapd
- * and the PTE updates will not touch it later. So
- * drop the lock.
- */
- if (pte_none(entry))
- return do_no_page(mm, vma, address, write_access, pte,
pmd);
- if (pte_file(entry))
- return do_file_page(mm, vma, address, write_access,
pte, pmd);
- return do_swap_page(mm, vma, address, pte, pmd, entry,
write_access);
- }
-
- if (write_access) {
- if (!pte_write(entry))
- return do_wp_page(mm, vma, address, pte, pmd, entry);
-
- entry = pte_mkdirty(entry);
- }
- entry = pte_mkyoung(entry);
- ptep_set_access_flags(vma, address, pte, entry, write_access);
- update_mmu_cache(vma, address, entry);
- pte_unmap(pte);
- spin_unlock(&mm->page_table_lock);
- return VM_FAULT_MINOR;
-}
-
-/*
- * By the time we get here, we already hold the mm semaphore
- */
-int handle_mm_fault(struct mm_struct *mm, struct vm_area_struct * vma,
- unsigned long address, int write_access)
-{
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *pte;
-
- __set_current_state(TASK_RUNNING);
-
- inc_page_state(pgfault);
-
- if (is_vm_hugetlb_page(vma))
- return VM_FAULT_SIGBUS; /* mapping truncation does this. */
-
- /*
- * We need the page table lock to synchronize with kswapd
- * and the SMP-safe atomic PTE updates.
- */
- pgd = pgd_offset(mm, address);
- spin_lock(&mm->page_table_lock);
-
- pud = pud_alloc(mm, pgd, address);
- if (!pud)
- goto oom;
-
- pmd = pmd_alloc(mm, pud, address);
- if (!pmd)
- goto oom;
-
- pte = pte_alloc_map(mm, pmd, address);
- if (!pte)
- goto oom;
-
- return handle_pte_fault(mm, vma, address, write_access, pte, pmd);
-
- oom:
- spin_unlock(&mm->page_table_lock);
- return VM_FAULT_OOM;
-}
-
-#ifndef __ARCH_HAS_4LEVEL_HACK
-/*
- * Allocate page upper directory.
- *
- * We've already handled the fast-path in-line, and we own the
- * page table lock.
- *
- * On a two-level or three-level page table, this ends up actually being
- * entirely optimized away.
- */
-pud_t fastcall *__pud_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long
address)
-{
- pud_t *new;
-
- spin_unlock(&mm->page_table_lock);
- new = pud_alloc_one(mm, address);
- spin_lock(&mm->page_table_lock);
- if (!new)
- return NULL;
-
- /*
- * Because we dropped the lock, we should re-check the
- * entry, as somebody else could have populated it..
- */
- if (pgd_present(*pgd)) {
- pud_free(new);
- goto out;
- }
- pgd_populate(mm, pgd, new);
- out:
- return pud_offset(pgd, address);
-}
-
-/*
- * Allocate page middle directory.
- *
- * We've already handled the fast-path in-line, and we own the
- * page table lock.
- *
- * On a two-level page table, this ends up actually being entirely
- * optimized away.
- */
-pmd_t fastcall *__pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long
address)
-{
- pmd_t *new;
-
- spin_unlock(&mm->page_table_lock);
- new = pmd_alloc_one(mm, address);
- spin_lock(&mm->page_table_lock);
- if (!new)
- return NULL;
-
- /*
- * Because we dropped the lock, we should re-check the
- * entry, as somebody else could have populated it..
- */
- if (pud_present(*pud)) {
- pmd_free(new);
- goto out;
- }
- pud_populate(mm, pud, new);
- out:
- return pmd_offset(pud, address);
-}
-#else
-pmd_t fastcall *__pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long
address)
-{
- pmd_t *new;
-
- spin_unlock(&mm->page_table_lock);
- new = pmd_alloc_one(mm, address);
- spin_lock(&mm->page_table_lock);
- if (!new)
- return NULL;
-
- /*
- * Because we dropped the lock, we should re-check the
- * entry, as somebody else could have populated it..
- */
- if (pgd_present(*pud)) {
- pmd_free(new);
- goto out;
- }
- pgd_populate(mm, pud, new);
-out:
- return pmd_offset(pud, address);
-}
-#endif
-
-int make_pages_present(unsigned long addr, unsigned long end)
-{
- int ret, len, write;
- struct vm_area_struct * vma;
-
- vma = find_vma(current->mm, addr);
- if (!vma)
- return -1;
- write = (vma->vm_flags & VM_WRITE) != 0;
- if (addr >= end)
- BUG();
- if (end > vma->vm_end)
- BUG();
- len = (end+PAGE_SIZE-1)/PAGE_SIZE-addr/PAGE_SIZE;
- ret = get_user_pages(current, current->mm, addr,
- len, write, 0, NULL, NULL);
- if (ret < 0)
- return ret;
- return ret == len ? 0 : -1;
-}
-
-/*
- * Map a vmalloc()-space virtual address to the physical page.
- */
-struct page * vmalloc_to_page(void * vmalloc_addr)
-{
- unsigned long addr = (unsigned long) vmalloc_addr;
- struct page *page = NULL;
- pgd_t *pgd = pgd_offset_k(addr);
- pud_t *pud;
- pmd_t *pmd;
- pte_t *ptep, pte;
-
- if (!pgd_none(*pgd)) {
- pud = pud_offset(pgd, addr);
- if (!pud_none(*pud)) {
- pmd = pmd_offset(pud, addr);
- if (!pmd_none(*pmd)) {
- ptep = pte_offset_map(pmd, addr);
- pte = *ptep;
- if (pte_present(pte))
- page = pte_page(pte);
- pte_unmap(ptep);
- }
- }
- }
- return page;
-}
-
-EXPORT_SYMBOL(vmalloc_to_page);
-
-/*
- * Map a vmalloc()-space virtual address to the physical page frame number.
- */
-unsigned long vmalloc_to_pfn(void * vmalloc_addr)
-{
- return page_to_pfn(vmalloc_to_page(vmalloc_addr));
-}
-
-EXPORT_SYMBOL(vmalloc_to_pfn);
-
-/*
- * update_mem_hiwater
- * - update per process rss and vm high water data
- */
-void update_mem_hiwater(void)
-{
- struct task_struct *tsk = current;
-
- if (tsk->mm) {
- if (tsk->mm->hiwater_rss < tsk->mm->rss)
- tsk->mm->hiwater_rss = tsk->mm->rss;
- if (tsk->mm->hiwater_vm < tsk->mm->total_vm)
- tsk->mm->hiwater_vm = tsk->mm->total_vm;
- }
-}
-
-#if !defined(__HAVE_ARCH_GATE_AREA)
-
-#if defined(AT_SYSINFO_EHDR)
-struct vm_area_struct gate_vma;
-
-static int __init gate_vma_init(void)
-{
- gate_vma.vm_mm = NULL;
- gate_vma.vm_start = FIXADDR_USER_START;
- gate_vma.vm_end = FIXADDR_USER_END;
- gate_vma.vm_page_prot = PAGE_READONLY;
- gate_vma.vm_flags = 0;
- return 0;
-}
-__initcall(gate_vma_init);
-#endif
-
-struct vm_area_struct *get_gate_vma(struct task_struct *tsk)
-{
-#ifdef AT_SYSINFO_EHDR
- return &gate_vma;
-#else
- return NULL;
-#endif
-}
-
-int in_gate_area_no_task(unsigned long addr)
-{
-#ifdef AT_SYSINFO_EHDR
- if ((addr >= FIXADDR_USER_START) && (addr < FIXADDR_USER_END))
- return 1;
-#endif
- return 0;
-}
-
-#endif /* __HAVE_ARCH_GATE_AREA */
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.6.11-xen-sparse/mm/mmap.c
--- a/linux-2.6.11-xen-sparse/mm/mmap.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,2108 +0,0 @@
-/*
- * mm/mmap.c
- *
- * Written by obz.
- *
- * Address space accounting code <alan@xxxxxxxxxx>
- */
-
-#include <linux/slab.h>
-#include <linux/mm.h>
-#include <linux/shm.h>
-#include <linux/mman.h>
-#include <linux/pagemap.h>
-#include <linux/swap.h>
-#include <linux/syscalls.h>
-#include <linux/init.h>
-#include <linux/file.h>
-#include <linux/fs.h>
-#include <linux/personality.h>
-#include <linux/security.h>
-#include <linux/hugetlb.h>
-#include <linux/profile.h>
-#include <linux/module.h>
-#include <linux/acct.h>
-#include <linux/mount.h>
-#include <linux/mempolicy.h>
-#include <linux/rmap.h>
-
-#include <asm/uaccess.h>
-#include <asm/cacheflush.h>
-#include <asm/tlb.h>
-
-/*
- * WARNING: the debugging will use recursive algorithms so never enable this
- * unless you know what you are doing.
- */
-#undef DEBUG_MM_RB
-
-/* description of effects of mapping type and prot in current implementation.
- * this is due to the limited x86 page protection hardware. The expected
- * behavior is in parens:
- *
- * map_type prot
- * PROT_NONE PROT_READ PROT_WRITE PROT_EXEC
- * MAP_SHARED r: (no) no r: (yes) yes r: (no) yes r: (no) yes
- * w: (no) no w: (no) no w: (yes) yes w: (no) no
- * x: (no) no x: (no) yes x: (no) yes x: (yes) yes
- *
- * MAP_PRIVATE r: (no) no r: (yes) yes r: (no) yes r: (no) yes
- * w: (no) no w: (no) no w: (copy) copy w: (no) no
- * x: (no) no x: (no) yes x: (no) yes x: (yes) yes
- *
- */
-pgprot_t protection_map[16] = {
- __P000, __P001, __P010, __P011, __P100, __P101, __P110, __P111,
- __S000, __S001, __S010, __S011, __S100, __S101, __S110, __S111
-};
-
-int sysctl_overcommit_memory = OVERCOMMIT_GUESS; /* heuristic overcommit */
-int sysctl_overcommit_ratio = 50; /* default is 50% */
-int sysctl_max_map_count = DEFAULT_MAX_MAP_COUNT;
-atomic_t vm_committed_space = ATOMIC_INIT(0);
-
-/*
- * Check that a process has enough memory to allocate a new virtual
- * mapping. 0 means there is enough memory for the allocation to
- * succeed and -ENOMEM implies there is not.
- *
- * We currently support three overcommit policies, which are set via the
- * vm.overcommit_memory sysctl. See Documentation/vm/overcommit-accounting
- *
- * Strict overcommit modes added 2002 Feb 26 by Alan Cox.
- * Additional code 2002 Jul 20 by Robert Love.
- *
- * cap_sys_admin is 1 if the process has admin privileges, 0 otherwise.
- *
- * Note this is a helper function intended to be used by LSMs which
- * wish to use this logic.
- */
-int __vm_enough_memory(long pages, int cap_sys_admin)
-{
- unsigned long free, allowed;
-
- vm_acct_memory(pages);
-
- /*
- * Sometimes we want to use more memory than we have
- */
- if (sysctl_overcommit_memory == OVERCOMMIT_ALWAYS)
- return 0;
-
- if (sysctl_overcommit_memory == OVERCOMMIT_GUESS) {
- unsigned long n;
-
- free = get_page_cache_size();
- free += nr_swap_pages;
-
- /*
- * Any slabs which are created with the
- * SLAB_RECLAIM_ACCOUNT flag claim to have contents
- * which are reclaimable, under pressure. The dentry
- * cache and most inode caches should fall into this
- */
- free += atomic_read(&slab_reclaim_pages);
-
- /*
- * Leave the last 3% for root
- */
- if (!cap_sys_admin)
- free -= free / 32;
-
- if (free > pages)
- return 0;
-
- /*
- * nr_free_pages() is very expensive on large systems,
- * only call if we're about to fail.
- */
- n = nr_free_pages();
- if (!cap_sys_admin)
- n -= n / 32;
- free += n;
-
- if (free > pages)
- return 0;
- vm_unacct_memory(pages);
- return -ENOMEM;
- }
-
- allowed = (totalram_pages - hugetlb_total_pages())
- * sysctl_overcommit_ratio / 100;
- /*
- * Leave the last 3% for root
- */
- if (!cap_sys_admin)
- allowed -= allowed / 32;
- allowed += total_swap_pages;
-
- /* Don't let a single process grow too big:
- leave 3% of the size of this process for other processes */
- allowed -= current->mm->total_vm / 32;
-
- if (atomic_read(&vm_committed_space) < allowed)
- return 0;
-
- vm_unacct_memory(pages);
-
- return -ENOMEM;
-}
-
-EXPORT_SYMBOL(sysctl_overcommit_memory);
-EXPORT_SYMBOL(sysctl_overcommit_ratio);
-EXPORT_SYMBOL(sysctl_max_map_count);
-EXPORT_SYMBOL(vm_committed_space);
-EXPORT_SYMBOL(__vm_enough_memory);
-
-/*
- * Requires inode->i_mapping->i_mmap_lock
- */
-static void __remove_shared_vm_struct(struct vm_area_struct *vma,
- struct file *file, struct address_space *mapping)
-{
- if (vma->vm_flags & VM_DENYWRITE)
- atomic_inc(&file->f_dentry->d_inode->i_writecount);
- if (vma->vm_flags & VM_SHARED)
- mapping->i_mmap_writable--;
-
- flush_dcache_mmap_lock(mapping);
- if (unlikely(vma->vm_flags & VM_NONLINEAR))
- list_del_init(&vma->shared.vm_set.list);
- else
- vma_prio_tree_remove(vma, &mapping->i_mmap);
- flush_dcache_mmap_unlock(mapping);
-}
-
-/*
- * Remove one vm structure and free it.
- */
-static void remove_vm_struct(struct vm_area_struct *vma)
-{
- struct file *file = vma->vm_file;
-
- might_sleep();
- if (file) {
- struct address_space *mapping = file->f_mapping;
- spin_lock(&mapping->i_mmap_lock);
- __remove_shared_vm_struct(vma, file, mapping);
- spin_unlock(&mapping->i_mmap_lock);
- }
- if (vma->vm_ops && vma->vm_ops->close)
- vma->vm_ops->close(vma);
- if (file)
- fput(file);
- anon_vma_unlink(vma);
- mpol_free(vma_policy(vma));
- kmem_cache_free(vm_area_cachep, vma);
-}
-
-/*
- * sys_brk() for the most part doesn't need the global kernel
- * lock, except when an application is doing something nasty
- * like trying to un-brk an area that has already been mapped
- * to a regular file. in this case, the unmapping will need
- * to invoke file system routines that need the global lock.
- */
-asmlinkage unsigned long sys_brk(unsigned long brk)
-{
- unsigned long rlim, retval;
- unsigned long newbrk, oldbrk;
- struct mm_struct *mm = current->mm;
-
- down_write(&mm->mmap_sem);
-
- if (brk < mm->end_code)
- goto out;
- newbrk = PAGE_ALIGN(brk);
- oldbrk = PAGE_ALIGN(mm->brk);
- if (oldbrk == newbrk)
- goto set_brk;
-
- /* Always allow shrinking brk. */
- if (brk <= mm->brk) {
- if (!do_munmap(mm, newbrk, oldbrk-newbrk))
- goto set_brk;
- goto out;
- }
-
- /* Check against rlimit.. */
- rlim = current->signal->rlim[RLIMIT_DATA].rlim_cur;
- if (rlim < RLIM_INFINITY && brk - mm->start_data > rlim)
- goto out;
-
- /* Check against existing mmap mappings. */
- if (find_vma_intersection(mm, oldbrk, newbrk+PAGE_SIZE))
- goto out;
-
- /* Ok, looks good - let it rip. */
- if (do_brk(oldbrk, newbrk-oldbrk) != oldbrk)
- goto out;
-set_brk:
- mm->brk = brk;
-out:
- retval = mm->brk;
- up_write(&mm->mmap_sem);
- return retval;
-}
-
-#ifdef DEBUG_MM_RB
-static int browse_rb(struct rb_root *root)
-{
- int i = 0, j;
- struct rb_node *nd, *pn = NULL;
- unsigned long prev = 0, pend = 0;
-
- for (nd = rb_first(root); nd; nd = rb_next(nd)) {
- struct vm_area_struct *vma;
- vma = rb_entry(nd, struct vm_area_struct, vm_rb);
- if (vma->vm_start < prev)
- printk("vm_start %lx prev %lx\n", vma->vm_start, prev),
i = -1;
- if (vma->vm_start < pend)
- printk("vm_start %lx pend %lx\n", vma->vm_start, pend);
- if (vma->vm_start > vma->vm_end)
- printk("vm_end %lx < vm_start %lx\n", vma->vm_end,
vma->vm_start);
- i++;
- pn = nd;
- }
- j = 0;
- for (nd = pn; nd; nd = rb_prev(nd)) {
- j++;
- }
- if (i != j)
- printk("backwards %d, forwards %d\n", j, i), i = 0;
- return i;
-}
-
-void validate_mm(struct mm_struct *mm)
-{
- int bug = 0;
- int i = 0;
- struct vm_area_struct *tmp = mm->mmap;
- while (tmp) {
- tmp = tmp->vm_next;
- i++;
- }
- if (i != mm->map_count)
- printk("map_count %d vm_next %d\n", mm->map_count, i), bug = 1;
- i = browse_rb(&mm->mm_rb);
- if (i != mm->map_count)
- printk("map_count %d rb %d\n", mm->map_count, i), bug = 1;
- if (bug)
- BUG();
-}
-#else
-#define validate_mm(mm) do { } while (0)
-#endif
-
-static struct vm_area_struct *
-find_vma_prepare(struct mm_struct *mm, unsigned long addr,
- struct vm_area_struct **pprev, struct rb_node ***rb_link,
- struct rb_node ** rb_parent)
-{
- struct vm_area_struct * vma;
- struct rb_node ** __rb_link, * __rb_parent, * rb_prev;
-
- __rb_link = &mm->mm_rb.rb_node;
- rb_prev = __rb_parent = NULL;
- vma = NULL;
-
- while (*__rb_link) {
- struct vm_area_struct *vma_tmp;
-
- __rb_parent = *__rb_link;
- vma_tmp = rb_entry(__rb_parent, struct vm_area_struct, vm_rb);
-
- if (vma_tmp->vm_end > addr) {
- vma = vma_tmp;
- if (vma_tmp->vm_start <= addr)
- return vma;
- __rb_link = &__rb_parent->rb_left;
- } else {
- rb_prev = __rb_parent;
- __rb_link = &__rb_parent->rb_right;
- }
- }
-
- *pprev = NULL;
- if (rb_prev)
- *pprev = rb_entry(rb_prev, struct vm_area_struct, vm_rb);
- *rb_link = __rb_link;
- *rb_parent = __rb_parent;
- return vma;
-}
-
-static inline void
-__vma_link_list(struct mm_struct *mm, struct vm_area_struct *vma,
- struct vm_area_struct *prev, struct rb_node *rb_parent)
-{
- if (prev) {
- vma->vm_next = prev->vm_next;
- prev->vm_next = vma;
- } else {
- mm->mmap = vma;
- if (rb_parent)
- vma->vm_next = rb_entry(rb_parent,
- struct vm_area_struct, vm_rb);
- else
- vma->vm_next = NULL;
- }
-}
-
-void __vma_link_rb(struct mm_struct *mm, struct vm_area_struct *vma,
- struct rb_node **rb_link, struct rb_node *rb_parent)
-{
- rb_link_node(&vma->vm_rb, rb_parent, rb_link);
- rb_insert_color(&vma->vm_rb, &mm->mm_rb);
-}
-
-static inline void __vma_link_file(struct vm_area_struct *vma)
-{
- struct file * file;
-
- file = vma->vm_file;
- if (file) {
- struct address_space *mapping = file->f_mapping;
-
- if (vma->vm_flags & VM_DENYWRITE)
- atomic_dec(&file->f_dentry->d_inode->i_writecount);
- if (vma->vm_flags & VM_SHARED)
- mapping->i_mmap_writable++;
-
- flush_dcache_mmap_lock(mapping);
- if (unlikely(vma->vm_flags & VM_NONLINEAR))
- vma_nonlinear_insert(vma, &mapping->i_mmap_nonlinear);
- else
- vma_prio_tree_insert(vma, &mapping->i_mmap);
- flush_dcache_mmap_unlock(mapping);
- }
-}
-
-static void
-__vma_link(struct mm_struct *mm, struct vm_area_struct *vma,
- struct vm_area_struct *prev, struct rb_node **rb_link,
- struct rb_node *rb_parent)
-{
- __vma_link_list(mm, vma, prev, rb_parent);
- __vma_link_rb(mm, vma, rb_link, rb_parent);
- __anon_vma_link(vma);
-}
-
-static void vma_link(struct mm_struct *mm, struct vm_area_struct *vma,
- struct vm_area_struct *prev, struct rb_node **rb_link,
- struct rb_node *rb_parent)
-{
- struct address_space *mapping = NULL;
-
- if (vma->vm_file)
- mapping = vma->vm_file->f_mapping;
-
- if (mapping) {
- spin_lock(&mapping->i_mmap_lock);
- vma->vm_truncate_count = mapping->truncate_count;
- }
- anon_vma_lock(vma);
-
- __vma_link(mm, vma, prev, rb_link, rb_parent);
- __vma_link_file(vma);
-
- anon_vma_unlock(vma);
- if (mapping)
- spin_unlock(&mapping->i_mmap_lock);
-
- mm->map_count++;
- validate_mm(mm);
-}
-
-/*
- * Helper for vma_adjust in the split_vma insert case:
- * insert vm structure into list and rbtree and anon_vma,
- * but it has already been inserted into prio_tree earlier.
- */
-static void
-__insert_vm_struct(struct mm_struct * mm, struct vm_area_struct * vma)
-{
- struct vm_area_struct * __vma, * prev;
- struct rb_node ** rb_link, * rb_parent;
-
- __vma = find_vma_prepare(mm, vma->vm_start,&prev, &rb_link, &rb_parent);
- if (__vma && __vma->vm_start < vma->vm_end)
- BUG();
- __vma_link(mm, vma, prev, rb_link, rb_parent);
- mm->map_count++;
-}
-
-static inline void
-__vma_unlink(struct mm_struct *mm, struct vm_area_struct *vma,
- struct vm_area_struct *prev)
-{
- prev->vm_next = vma->vm_next;
- rb_erase(&vma->vm_rb, &mm->mm_rb);
- if (mm->mmap_cache == vma)
- mm->mmap_cache = prev;
-}
-
-/*
- * We cannot adjust vm_start, vm_end, vm_pgoff fields of a vma that
- * is already present in an i_mmap tree without adjusting the tree.
- * The following helper function should be used when such adjustments
- * are necessary. The "insert" vma (if any) is to be inserted
- * before we drop the necessary locks.
- */
-void vma_adjust(struct vm_area_struct *vma, unsigned long start,
- unsigned long end, pgoff_t pgoff, struct vm_area_struct *insert)
-{
- struct mm_struct *mm = vma->vm_mm;
- struct vm_area_struct *next = vma->vm_next;
- struct vm_area_struct *importer = NULL;
- struct address_space *mapping = NULL;
- struct prio_tree_root *root = NULL;
- struct file *file = vma->vm_file;
- struct anon_vma *anon_vma = NULL;
- long adjust_next = 0;
- int remove_next = 0;
-
- if (next && !insert) {
- if (end >= next->vm_end) {
- /*
- * vma expands, overlapping all the next, and
- * perhaps the one after too (mprotect case 6).
- */
-again: remove_next = 1 + (end > next->vm_end);
- end = next->vm_end;
- anon_vma = next->anon_vma;
- importer = vma;
- } else if (end > next->vm_start) {
- /*
- * vma expands, overlapping part of the next:
- * mprotect case 5 shifting the boundary up.
- */
- adjust_next = (end - next->vm_start) >> PAGE_SHIFT;
- anon_vma = next->anon_vma;
- importer = vma;
- } else if (end < vma->vm_end) {
- /*
- * vma shrinks, and !insert tells it's not
- * split_vma inserting another: so it must be
- * mprotect case 4 shifting the boundary down.
- */
- adjust_next = - ((vma->vm_end - end) >> PAGE_SHIFT);
- anon_vma = next->anon_vma;
- importer = next;
- }
- }
-
- if (file) {
- mapping = file->f_mapping;
- if (!(vma->vm_flags & VM_NONLINEAR))
- root = &mapping->i_mmap;
- spin_lock(&mapping->i_mmap_lock);
- if (importer &&
- vma->vm_truncate_count != next->vm_truncate_count) {
- /*
- * unmap_mapping_range might be in progress:
- * ensure that the expanding vma is rescanned.
- */
- importer->vm_truncate_count = 0;
- }
- if (insert) {
- insert->vm_truncate_count = vma->vm_truncate_count;
- /*
- * Put into prio_tree now, so instantiated pages
- * are visible to arm/parisc __flush_dcache_page
- * throughout; but we cannot insert into address
- * space until vma start or end is updated.
- */
- __vma_link_file(insert);
- }
- }
-
- /*
- * When changing only vma->vm_end, we don't really need
- * anon_vma lock: but is that case worth optimizing out?
- */
- if (vma->anon_vma)
- anon_vma = vma->anon_vma;
- if (anon_vma) {
- spin_lock(&anon_vma->lock);
- /*
- * Easily overlooked: when mprotect shifts the boundary,
- * make sure the expanding vma has anon_vma set if the
- * shrinking vma had, to cover any anon pages imported.
- */
- if (importer && !importer->anon_vma) {
- importer->anon_vma = anon_vma;
- __anon_vma_link(importer);
- }
- }
-
- if (root) {
- flush_dcache_mmap_lock(mapping);
- vma_prio_tree_remove(vma, root);
- if (adjust_next)
- vma_prio_tree_remove(next, root);
- }
-
- vma->vm_start = start;
- vma->vm_end = end;
- vma->vm_pgoff = pgoff;
- if (adjust_next) {
- next->vm_start += adjust_next << PAGE_SHIFT;
- next->vm_pgoff += adjust_next;
- }
-
- if (root) {
- if (adjust_next)
- vma_prio_tree_insert(next, root);
- vma_prio_tree_insert(vma, root);
- flush_dcache_mmap_unlock(mapping);
- }
-
- if (remove_next) {
- /*
- * vma_merge has merged next into vma, and needs
- * us to remove next before dropping the locks.
- */
- __vma_unlink(mm, next, vma);
- if (file)
- __remove_shared_vm_struct(next, file, mapping);
- if (next->anon_vma)
- __anon_vma_merge(vma, next);
- } else if (insert) {
- /*
- * split_vma has split insert from vma, and needs
- * us to insert it before dropping the locks
- * (it may either follow vma or precede it).
- */
- __insert_vm_struct(mm, insert);
- }
-
- if (anon_vma)
- spin_unlock(&anon_vma->lock);
- if (mapping)
- spin_unlock(&mapping->i_mmap_lock);
-
- if (remove_next) {
- if (file)
- fput(file);
- mm->map_count--;
- mpol_free(vma_policy(next));
- kmem_cache_free(vm_area_cachep, next);
- /*
- * In mprotect's case 6 (see comments on vma_merge),
- * we must remove another next too. It would clutter
- * up the code too much to do both in one go.
- */
- if (remove_next == 2) {
- next = vma->vm_next;
- goto again;
- }
- }
-
- validate_mm(mm);
-}
-
-/*
- * If the vma has a ->close operation then the driver probably needs to release
- * per-vma resources, so we don't attempt to merge those.
- */
-#define VM_SPECIAL (VM_IO | VM_DONTCOPY | VM_DONTEXPAND | VM_RESERVED)
-
-static inline int is_mergeable_vma(struct vm_area_struct *vma,
- struct file *file, unsigned long vm_flags)
-{
- if (vma->vm_flags != vm_flags)
- return 0;
- if (vma->vm_file != file)
- return 0;
- if (vma->vm_ops && vma->vm_ops->close)
- return 0;
- return 1;
-}
-
-static inline int is_mergeable_anon_vma(struct anon_vma *anon_vma1,
- struct anon_vma *anon_vma2)
-{
- return !anon_vma1 || !anon_vma2 || (anon_vma1 == anon_vma2);
-}
-
-/*
- * Return true if we can merge this (vm_flags,anon_vma,file,vm_pgoff)
- * in front of (at a lower virtual address and file offset than) the vma.
- *
- * We cannot merge two vmas if they have differently assigned (non-NULL)
- * anon_vmas, nor if same anon_vma is assigned but offsets incompatible.
- *
- * We don't check here for the merged mmap wrapping around the end of pagecache
- * indices (16TB on ia32) because do_mmap_pgoff() does not permit mmap's which
- * wrap, nor mmaps which cover the final page at index -1UL.
- */
-static int
-can_vma_merge_before(struct vm_area_struct *vma, unsigned long vm_flags,
- struct anon_vma *anon_vma, struct file *file, pgoff_t vm_pgoff)
-{
- if (is_mergeable_vma(vma, file, vm_flags) &&
- is_mergeable_anon_vma(anon_vma, vma->anon_vma)) {
- if (vma->vm_pgoff == vm_pgoff)
- return 1;
- }
- return 0;
-}
-
-/*
- * Return true if we can merge this (vm_flags,anon_vma,file,vm_pgoff)
- * beyond (at a higher virtual address and file offset than) the vma.
- *
- * We cannot merge two vmas if they have differently assigned (non-NULL)
- * anon_vmas, nor if same anon_vma is assigned but offsets incompatible.
- */
-static int
-can_vma_merge_after(struct vm_area_struct *vma, unsigned long vm_flags,
- struct anon_vma *anon_vma, struct file *file, pgoff_t vm_pgoff)
-{
- if (is_mergeable_vma(vma, file, vm_flags) &&
- is_mergeable_anon_vma(anon_vma, vma->anon_vma)) {
- pgoff_t vm_pglen;
- vm_pglen = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
- if (vma->vm_pgoff + vm_pglen == vm_pgoff)
- return 1;
- }
- return 0;
-}
-
-/*
- * Given a mapping request (addr,end,vm_flags,file,pgoff), figure out
- * whether that can be merged with its predecessor or its successor.
- * Or both (it neatly fills a hole).
- *
- * In most cases - when called for mmap, brk or mremap - [addr,end) is
- * certain not to be mapped by the time vma_merge is called; but when
- * called for mprotect, it is certain to be already mapped (either at
- * an offset within prev, or at the start of next), and the flags of
- * this area are about to be changed to vm_flags - and the no-change
- * case has already been eliminated.
- *
- * The following mprotect cases have to be considered, where AAAA is
- * the area passed down from mprotect_fixup, never extending beyond one
- * vma, PPPPPP is the prev vma specified, and NNNNNN the next vma after:
- *
- * AAAA AAAA AAAA AAAA
- * PPPPPPNNNNNN PPPPPPNNNNNN PPPPPPNNNNNN PPPPNNNNXXXX
- * cannot merge might become might become might become
- * PPNNNNNNNNNN PPPPPPPPPPNN PPPPPPPPPPPP 6 or
- * mmap, brk or case 4 below case 5 below PPPPPPPPXXXX 7 or
- * mremap move: PPPPNNNNNNNN 8
- * AAAA
- * PPPP NNNN PPPPPPPPPPPP PPPPPPPPNNNN PPPPNNNNNNNN
- * might become case 1 below case 2 below case 3 below
- *
- * Odd one out? Case 8, because it extends NNNN but needs flags of XXXX:
- * mprotect_fixup updates vm_flags & vm_page_prot on successful return.
- */
-struct vm_area_struct *vma_merge(struct mm_struct *mm,
- struct vm_area_struct *prev, unsigned long addr,
- unsigned long end, unsigned long vm_flags,
- struct anon_vma *anon_vma, struct file *file,
- pgoff_t pgoff, struct mempolicy *policy)
-{
- pgoff_t pglen = (end - addr) >> PAGE_SHIFT;
- struct vm_area_struct *area, *next;
-
- /*
- * We later require that vma->vm_flags == vm_flags,
- * so this tests vma->vm_flags & VM_SPECIAL, too.
- */
- if (vm_flags & VM_SPECIAL)
- return NULL;
-
- if (prev)
- next = prev->vm_next;
- else
- next = mm->mmap;
- area = next;
- if (next && next->vm_end == end) /* cases 6, 7, 8 */
- next = next->vm_next;
-
- /*
- * Can it merge with the predecessor?
- */
- if (prev && prev->vm_end == addr &&
- mpol_equal(vma_policy(prev), policy) &&
- can_vma_merge_after(prev, vm_flags,
- anon_vma, file, pgoff)) {
- /*
- * OK, it can. Can we now merge in the successor as well?
- */
- if (next && end == next->vm_start &&
- mpol_equal(policy, vma_policy(next)) &&
- can_vma_merge_before(next, vm_flags,
- anon_vma, file, pgoff+pglen) &&
- is_mergeable_anon_vma(prev->anon_vma,
- next->anon_vma)) {
- /* cases 1, 6 */
- vma_adjust(prev, prev->vm_start,
- next->vm_end, prev->vm_pgoff, NULL);
- } else /* cases 2, 5, 7 */
- vma_adjust(prev, prev->vm_start,
- end, prev->vm_pgoff, NULL);
- return prev;
- }
-
- /*
- * Can this new request be merged in front of next?
- */
- if (next && end == next->vm_start &&
- mpol_equal(policy, vma_policy(next)) &&
- can_vma_merge_before(next, vm_flags,
- anon_vma, file, pgoff+pglen)) {
- if (prev && addr < prev->vm_end) /* case 4 */
- vma_adjust(prev, prev->vm_start,
- addr, prev->vm_pgoff, NULL);
- else /* cases 3, 8 */
- vma_adjust(area, addr, next->vm_end,
- next->vm_pgoff - pglen, NULL);
- return area;
- }
-
- return NULL;
-}
-
-/*
- * find_mergeable_anon_vma is used by anon_vma_prepare, to check
- * neighbouring vmas for a suitable anon_vma, before it goes off
- * to allocate a new anon_vma. It checks because a repetitive
- * sequence of mprotects and faults may otherwise lead to distinct
- * anon_vmas being allocated, preventing vma merge in subsequent
- * mprotect.
- */
-struct anon_vma *find_mergeable_anon_vma(struct vm_area_struct *vma)
-{
- struct vm_area_struct *near;
- unsigned long vm_flags;
-
- near = vma->vm_next;
- if (!near)
- goto try_prev;
-
- /*
- * Since only mprotect tries to remerge vmas, match flags
- * which might be mprotected into each other later on.
- * Neither mlock nor madvise tries to remerge at present,
- * so leave their flags as obstructing a merge.
- */
- vm_flags = vma->vm_flags & ~(VM_READ|VM_WRITE|VM_EXEC);
- vm_flags |= near->vm_flags & (VM_READ|VM_WRITE|VM_EXEC);
-
- if (near->anon_vma && vma->vm_end == near->vm_start &&
- mpol_equal(vma_policy(vma), vma_policy(near)) &&
- can_vma_merge_before(near, vm_flags,
- NULL, vma->vm_file, vma->vm_pgoff +
- ((vma->vm_end - vma->vm_start) >> PAGE_SHIFT)))
- return near->anon_vma;
-try_prev:
- /*
- * It is potentially slow to have to call find_vma_prev here.
- * But it's only on the first write fault on the vma, not
- * every time, and we could devise a way to avoid it later
- * (e.g. stash info in next's anon_vma_node when assigning
- * an anon_vma, or when trying vma_merge). Another time.
- */
- if (find_vma_prev(vma->vm_mm, vma->vm_start, &near) != vma)
- BUG();
- if (!near)
- goto none;
-
- vm_flags = vma->vm_flags & ~(VM_READ|VM_WRITE|VM_EXEC);
- vm_flags |= near->vm_flags & (VM_READ|VM_WRITE|VM_EXEC);
-
- if (near->anon_vma && near->vm_end == vma->vm_start &&
- mpol_equal(vma_policy(near), vma_policy(vma)) &&
- can_vma_merge_after(near, vm_flags,
- NULL, vma->vm_file, vma->vm_pgoff))
- return near->anon_vma;
-none:
- /*
- * There's no absolute need to look only at touching neighbours:
- * we could search further afield for "compatible" anon_vmas.
- * But it would probably just be a waste of time searching,
- * or lead to too many vmas hanging off the same anon_vma.
- * We're trying to allow mprotect remerging later on,
- * not trying to minimize memory used for anon_vmas.
- */
- return NULL;
-}
-
-#ifdef CONFIG_PROC_FS
-void __vm_stat_account(struct mm_struct *mm, unsigned long flags,
- struct file *file, long pages)
-{
- const unsigned long stack_flags
- = VM_STACK_FLAGS & (VM_GROWSUP|VM_GROWSDOWN);
-
-#ifdef CONFIG_HUGETLB
- if (flags & VM_HUGETLB) {
- if (!(flags & VM_DONTCOPY))
- mm->shared_vm += pages;
- return;
- }
-#endif /* CONFIG_HUGETLB */
-
- if (file) {
- mm->shared_vm += pages;
- if ((flags & (VM_EXEC|VM_WRITE)) == VM_EXEC)
- mm->exec_vm += pages;
- } else if (flags & stack_flags)
- mm->stack_vm += pages;
- if (flags & (VM_RESERVED|VM_IO))
- mm->reserved_vm += pages;
-}
-#endif /* CONFIG_PROC_FS */
-
-/*
- * The caller must hold down_write(current->mm->mmap_sem).
- */
-
-unsigned long do_mmap_pgoff(struct file * file, unsigned long addr,
- unsigned long len, unsigned long prot,
- unsigned long flags, unsigned long pgoff)
-{
- struct mm_struct * mm = current->mm;
- struct vm_area_struct * vma, * prev;
- struct inode *inode;
- unsigned int vm_flags;
- int correct_wcount = 0;
- int error;
- struct rb_node ** rb_link, * rb_parent;
- int accountable = 1;
- unsigned long charged = 0;
-
- if (file) {
- if (is_file_hugepages(file))
- accountable = 0;
-
- if (!file->f_op || !file->f_op->mmap)
- return -ENODEV;
-
- if ((prot & PROT_EXEC) &&
- (file->f_vfsmnt->mnt_flags & MNT_NOEXEC))
- return -EPERM;
- }
- /*
- * Does the application expect PROT_READ to imply PROT_EXEC?
- *
- * (the exception is when the underlying filesystem is noexec
- * mounted, in which case we dont add PROT_EXEC.)
- */
- if ((prot & PROT_READ) && (current->personality & READ_IMPLIES_EXEC))
- if (!(file && (file->f_vfsmnt->mnt_flags & MNT_NOEXEC)))
- prot |= PROT_EXEC;
-
- if (!len)
- return addr;
-
- /* Careful about overflows.. */
- len = PAGE_ALIGN(len);
- if (!len || len > TASK_SIZE)
- return -EINVAL;
-
- /* offset overflow? */
- if ((pgoff + (len >> PAGE_SHIFT)) < pgoff)
- return -EINVAL;
-
- /* Too many mappings? */
- if (mm->map_count > sysctl_max_map_count)
- return -ENOMEM;
-
- /* Obtain the address to map to. we verify (or select) it and ensure
- * that it represents a valid section of the address space.
- */
- addr = get_unmapped_area(file, addr, len, pgoff, flags);
- if (addr & ~PAGE_MASK)
- return addr;
-
- /* Do simple checking here so the lower-level routines won't have
- * to. we assume access permissions have been handled by the open
- * of the memory object, so we don't do any here.
- */
- vm_flags = calc_vm_prot_bits(prot) | calc_vm_flag_bits(flags) |
- mm->def_flags | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC;
-
- if (flags & MAP_LOCKED) {
- if (!can_do_mlock())
- return -EPERM;
- vm_flags |= VM_LOCKED;
- }
- /* mlock MCL_FUTURE? */
- if (vm_flags & VM_LOCKED) {
- unsigned long locked, lock_limit;
- locked = mm->locked_vm << PAGE_SHIFT;
- lock_limit = current->signal->rlim[RLIMIT_MEMLOCK].rlim_cur;
- locked += len;
- if (locked > lock_limit && !capable(CAP_IPC_LOCK))
- return -EAGAIN;
- }
-
- inode = file ? file->f_dentry->d_inode : NULL;
-
- if (file) {
- switch (flags & MAP_TYPE) {
- case MAP_SHARED:
- if ((prot&PROT_WRITE) && !(file->f_mode&FMODE_WRITE))
- return -EACCES;
-
- /*
- * Make sure we don't allow writing to an append-only
- * file..
- */
- if (IS_APPEND(inode) && (file->f_mode & FMODE_WRITE))
- return -EACCES;
-
- /*
- * Make sure there are no mandatory locks on the file.
- */
- if (locks_verify_locked(inode))
- return -EAGAIN;
-
- vm_flags |= VM_SHARED | VM_MAYSHARE;
- if (!(file->f_mode & FMODE_WRITE))
- vm_flags &= ~(VM_MAYWRITE | VM_SHARED);
-
- /* fall through */
- case MAP_PRIVATE:
- if (!(file->f_mode & FMODE_READ))
- return -EACCES;
- break;
-
- default:
- return -EINVAL;
- }
- } else {
- switch (flags & MAP_TYPE) {
- case MAP_SHARED:
- vm_flags |= VM_SHARED | VM_MAYSHARE;
- break;
- case MAP_PRIVATE:
- /*
- * Set pgoff according to addr for anon_vma.
- */
- pgoff = addr >> PAGE_SHIFT;
- break;
- default:
- return -EINVAL;
- }
- }
-
- error = security_file_mmap(file, prot, flags);
- if (error)
- return error;
-
- /* Clear old maps */
- error = -ENOMEM;
-munmap_back:
- vma = find_vma_prepare(mm, addr, &prev, &rb_link, &rb_parent);
- if (vma && vma->vm_start < addr + len) {
- if (do_munmap(mm, addr, len))
- return -ENOMEM;
- goto munmap_back;
- }
-
- /* Check against address space limit. */
- if ((mm->total_vm << PAGE_SHIFT) + len
- > current->signal->rlim[RLIMIT_AS].rlim_cur)
- return -ENOMEM;
-
- if (accountable && (!(flags & MAP_NORESERVE) ||
- sysctl_overcommit_memory == OVERCOMMIT_NEVER)) {
- if (vm_flags & VM_SHARED) {
- /* Check memory availability in shmem_file_setup? */
- vm_flags |= VM_ACCOUNT;
- } else if (vm_flags & VM_WRITE) {
- /*
- * Private writable mapping: check memory availability
- */
- charged = len >> PAGE_SHIFT;
- if (security_vm_enough_memory(charged))
- return -ENOMEM;
- vm_flags |= VM_ACCOUNT;
- }
- }
-
- /*
- * Can we just expand an old private anonymous mapping?
- * The VM_SHARED test is necessary because shmem_zero_setup
- * will create the file object for a shared anonymous map below.
- */
- if (!file && !(vm_flags & VM_SHARED) &&
- vma_merge(mm, prev, addr, addr + len, vm_flags,
- NULL, NULL, pgoff, NULL))
- goto out;
-
- /*
- * Determine the object being mapped and call the appropriate
- * specific mapper. the address has already been validated, but
- * not unmapped, but the maps are removed from the list.
- */
- vma = kmem_cache_alloc(vm_area_cachep, SLAB_KERNEL);
- if (!vma) {
- error = -ENOMEM;
- goto unacct_error;
- }
- memset(vma, 0, sizeof(*vma));
-
- vma->vm_mm = mm;
- vma->vm_start = addr;
- vma->vm_end = addr + len;
- vma->vm_flags = vm_flags;
- vma->vm_page_prot = protection_map[vm_flags & 0x0f];
- vma->vm_pgoff = pgoff;
-
- if (file) {
- error = -EINVAL;
- if (vm_flags & (VM_GROWSDOWN|VM_GROWSUP))
- goto free_vma;
- if (vm_flags & VM_DENYWRITE) {
- error = deny_write_access(file);
- if (error)
- goto free_vma;
- correct_wcount = 1;
- }
- vma->vm_file = file;
- get_file(file);
- error = file->f_op->mmap(file, vma);
- if (error)
- goto unmap_and_free_vma;
- } else if (vm_flags & VM_SHARED) {
- error = shmem_zero_setup(vma);
- if (error)
- goto free_vma;
- }
-
- /* We set VM_ACCOUNT in a shared mapping's vm_flags, to inform
- * shmem_zero_setup (perhaps called through /dev/zero's ->mmap)
- * that memory reservation must be checked; but that reservation
- * belongs to shared memory object, not to vma: so now clear it.
- */
- if ((vm_flags & (VM_SHARED|VM_ACCOUNT)) == (VM_SHARED|VM_ACCOUNT))
- vma->vm_flags &= ~VM_ACCOUNT;
-
- /* Can addr have changed??
- *
- * Answer: Yes, several device drivers can do it in their
- * f_op->mmap method. -DaveM
- */
- addr = vma->vm_start;
- pgoff = vma->vm_pgoff;
- vm_flags = vma->vm_flags;
-
- if (!file || !vma_merge(mm, prev, addr, vma->vm_end,
- vma->vm_flags, NULL, file, pgoff, vma_policy(vma))) {
- file = vma->vm_file;
- vma_link(mm, vma, prev, rb_link, rb_parent);
- if (correct_wcount)
- atomic_inc(&inode->i_writecount);
- } else {
- if (file) {
- if (correct_wcount)
- atomic_inc(&inode->i_writecount);
- fput(file);
- }
- mpol_free(vma_policy(vma));
- kmem_cache_free(vm_area_cachep, vma);
- }
-out:
- mm->total_vm += len >> PAGE_SHIFT;
- __vm_stat_account(mm, vm_flags, file, len >> PAGE_SHIFT);
- if (vm_flags & VM_LOCKED) {
- mm->locked_vm += len >> PAGE_SHIFT;
- make_pages_present(addr, addr + len);
- }
- if (flags & MAP_POPULATE) {
- up_write(&mm->mmap_sem);
- sys_remap_file_pages(addr, len, 0,
- pgoff, flags & MAP_NONBLOCK);
- down_write(&mm->mmap_sem);
- }
- acct_update_integrals();
- update_mem_hiwater();
- return addr;
-
-unmap_and_free_vma:
- if (correct_wcount)
- atomic_inc(&inode->i_writecount);
- vma->vm_file = NULL;
- fput(file);
-
- /* Undo any partial mapping done by a device driver. */
- zap_page_range(vma, vma->vm_start, vma->vm_end - vma->vm_start, NULL);
-free_vma:
- kmem_cache_free(vm_area_cachep, vma);
-unacct_error:
- if (charged)
- vm_unacct_memory(charged);
- return error;
-}
-
-EXPORT_SYMBOL(do_mmap_pgoff);
-
-/* Get an address range which is currently unmapped.
- * For shmat() with addr=0.
- *
- * Ugly calling convention alert:
- * Return value with the low bits set means error value,
- * ie
- * if (ret & ~PAGE_MASK)
- * error = ret;
- *
- * This function "knows" that -ENOMEM has the bits set.
- */
-#ifndef HAVE_ARCH_UNMAPPED_AREA
-unsigned long
-arch_get_unmapped_area(struct file *filp, unsigned long addr,
- unsigned long len, unsigned long pgoff, unsigned long flags)
-{
- struct mm_struct *mm = current->mm;
- struct vm_area_struct *vma;
- unsigned long start_addr;
-
- if (len > TASK_SIZE)
- return -ENOMEM;
-
- if (addr) {
- addr = PAGE_ALIGN(addr);
- vma = find_vma(mm, addr);
- if (TASK_SIZE - len >= addr &&
- (!vma || addr + len <= vma->vm_start))
- return addr;
- }
- start_addr = addr = mm->free_area_cache;
-
-full_search:
- for (vma = find_vma(mm, addr); ; vma = vma->vm_next) {
- /* At this point: (!vma || addr < vma->vm_end). */
- if (TASK_SIZE - len < addr) {
- /*
- * Start a new search - just in case we missed
- * some holes.
- */
- if (start_addr != TASK_UNMAPPED_BASE) {
- start_addr = addr = TASK_UNMAPPED_BASE;
- goto full_search;
- }
- return -ENOMEM;
- }
- if (!vma || addr + len <= vma->vm_start) {
- /*
- * Remember the place where we stopped the search:
- */
- mm->free_area_cache = addr + len;
- return addr;
- }
- addr = vma->vm_end;
- }
-}
-#endif
-
-void arch_unmap_area(struct vm_area_struct *area)
-{
- /*
- * Is this a new hole at the lowest possible address?
- */
- if (area->vm_start >= TASK_UNMAPPED_BASE &&
- area->vm_start < area->vm_mm->free_area_cache)
- area->vm_mm->free_area_cache = area->vm_start;
-}
-
-/*
- * This mmap-allocator allocates new areas top-down from below the
- * stack's low limit (the base):
- */
-#ifndef HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
-unsigned long
-arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
- const unsigned long len, const unsigned long pgoff,
- const unsigned long flags)
-{
- struct vm_area_struct *vma, *prev_vma;
- struct mm_struct *mm = current->mm;
- unsigned long base = mm->mmap_base, addr = addr0;
- int first_time = 1;
-
- /* requested length too big for entire address space */
- if (len > TASK_SIZE)
- return -ENOMEM;
-
- /* dont allow allocations above current base */
- if (mm->free_area_cache > base)
- mm->free_area_cache = base;
-
- /* requesting a specific address */
- if (addr) {
- addr = PAGE_ALIGN(addr);
- vma = find_vma(mm, addr);
- if (TASK_SIZE - len >= addr &&
- (!vma || addr + len <= vma->vm_start))
- return addr;
- }
-
-try_again:
- /* make sure it can fit in the remaining address space */
- if (mm->free_area_cache < len)
- goto fail;
-
- /* either no address requested or cant fit in requested address hole */
- addr = (mm->free_area_cache - len) & PAGE_MASK;
- do {
- /*
- * Lookup failure means no vma is above this address,
- * i.e. return with success:
- */
- if (!(vma = find_vma_prev(mm, addr, &prev_vma)))
- return addr;
-
- /*
- * new region fits between prev_vma->vm_end and
- * vma->vm_start, use it:
- */
- if (addr+len <= vma->vm_start &&
- (!prev_vma || (addr >= prev_vma->vm_end)))
- /* remember the address as a hint for next time */
- return (mm->free_area_cache = addr);
- else
- /* pull free_area_cache down to the first hole */
- if (mm->free_area_cache == vma->vm_end)
- mm->free_area_cache = vma->vm_start;
-
- /* try just below the current vma->vm_start */
- addr = vma->vm_start-len;
- } while (len <= vma->vm_start);
-
-fail:
- /*
- * if hint left us with no space for the requested
- * mapping then try again:
- */
- if (first_time) {
- mm->free_area_cache = base;
- first_time = 0;
- goto try_again;
- }
- /*
- * A failed mmap() very likely causes application failure,
- * so fall back to the bottom-up function here. This scenario
- * can happen with large stack limits and large mmap()
- * allocations.
- */
- mm->free_area_cache = TASK_UNMAPPED_BASE;
- addr = arch_get_unmapped_area(filp, addr0, len, pgoff, flags);
- /*
- * Restore the topdown base:
- */
- mm->free_area_cache = base;
-
- return addr;
-}
-#endif
-
-void arch_unmap_area_topdown(struct vm_area_struct *area)
-{
- /*
- * Is this a new hole at the highest possible address?
- */
- if (area->vm_end > area->vm_mm->free_area_cache)
- area->vm_mm->free_area_cache = area->vm_end;
-}
-
-unsigned long
-get_unmapped_area(struct file *file, unsigned long addr, unsigned long len,
- unsigned long pgoff, unsigned long flags)
-{
- if (flags & MAP_FIXED) {
- unsigned long ret;
-
- if (addr > TASK_SIZE - len)
- return -ENOMEM;
- if (addr & ~PAGE_MASK)
- return -EINVAL;
- if (file && is_file_hugepages(file)) {
- /*
- * Check if the given range is hugepage aligned, and
- * can be made suitable for hugepages.
- */
- ret = prepare_hugepage_range(addr, len);
- } else {
- /*
- * Ensure that a normal request is not falling in a
- * reserved hugepage range. For some archs like IA-64,
- * there is a separate region for hugepages.
- */
- ret = is_hugepage_only_range(addr, len);
- }
- if (ret)
- return -EINVAL;
- return addr;
- }
-
- if (file && file->f_op && file->f_op->get_unmapped_area)
- return file->f_op->get_unmapped_area(file, addr, len,
- pgoff, flags);
-
- return current->mm->get_unmapped_area(file, addr, len, pgoff, flags);
-}
-
-EXPORT_SYMBOL(get_unmapped_area);
-
-/* Look up the first VMA which satisfies addr < vm_end, NULL if none. */
-struct vm_area_struct * find_vma(struct mm_struct * mm, unsigned long addr)
-{
- struct vm_area_struct *vma = NULL;
-
- if (mm) {
- /* Check the cache first. */
- /* (Cache hit rate is typically around 35%.) */
- vma = mm->mmap_cache;
- if (!(vma && vma->vm_end > addr && vma->vm_start <= addr)) {
- struct rb_node * rb_node;
-
- rb_node = mm->mm_rb.rb_node;
- vma = NULL;
-
- while (rb_node) {
- struct vm_area_struct * vma_tmp;
-
- vma_tmp = rb_entry(rb_node,
- struct vm_area_struct, vm_rb);
-
- if (vma_tmp->vm_end > addr) {
- vma = vma_tmp;
- if (vma_tmp->vm_start <= addr)
- break;
- rb_node = rb_node->rb_left;
- } else
- rb_node = rb_node->rb_right;
- }
- if (vma)
- mm->mmap_cache = vma;
- }
- }
- return vma;
-}
-
-EXPORT_SYMBOL(find_vma);
-
-/* Same as find_vma, but also return a pointer to the previous VMA in *pprev.
*/
-struct vm_area_struct *
-find_vma_prev(struct mm_struct *mm, unsigned long addr,
- struct vm_area_struct **pprev)
-{
- struct vm_area_struct *vma = NULL, *prev = NULL;
- struct rb_node * rb_node;
- if (!mm)
- goto out;
-
- /* Guard against addr being lower than the first VMA */
- vma = mm->mmap;
-
- /* Go through the RB tree quickly. */
- rb_node = mm->mm_rb.rb_node;
-
- while (rb_node) {
- struct vm_area_struct *vma_tmp;
- vma_tmp = rb_entry(rb_node, struct vm_area_struct, vm_rb);
-
- if (addr < vma_tmp->vm_end) {
- rb_node = rb_node->rb_left;
- } else {
- prev = vma_tmp;
- if (!prev->vm_next || (addr < prev->vm_next->vm_end))
- break;
- rb_node = rb_node->rb_right;
- }
- }
-
-out:
- *pprev = prev;
- return prev ? prev->vm_next : vma;
-}
-
-/*
- * Verify that the stack growth is acceptable and
- * update accounting. This is shared with both the
- * grow-up and grow-down cases.
- */
-static int acct_stack_growth(struct vm_area_struct * vma, unsigned long size,
unsigned long grow)
-{
- struct mm_struct *mm = vma->vm_mm;
- struct rlimit *rlim = current->signal->rlim;
-
- /* address space limit tests */
- if (mm->total_vm + grow > rlim[RLIMIT_AS].rlim_cur >> PAGE_SHIFT)
- return -ENOMEM;
-
- /* Stack limit test */
- if (size > rlim[RLIMIT_STACK].rlim_cur)
- return -ENOMEM;
-
- /* mlock limit tests */
- if (vma->vm_flags & VM_LOCKED) {
- unsigned long locked;
- unsigned long limit;
- locked = mm->locked_vm + grow;
- limit = rlim[RLIMIT_MEMLOCK].rlim_cur >> PAGE_SHIFT;
- if (locked > limit && !capable(CAP_IPC_LOCK))
- return -ENOMEM;
- }
-
- /*
- * Overcommit.. This must be the final test, as it will
- * update security statistics.
- */
- if (security_vm_enough_memory(grow))
- return -ENOMEM;
-
- /* Ok, everything looks good - let it rip */
- mm->total_vm += grow;
- if (vma->vm_flags & VM_LOCKED)
- mm->locked_vm += grow;
- __vm_stat_account(mm, vma->vm_flags, vma->vm_file, grow);
- acct_update_integrals();
- update_mem_hiwater();
- return 0;
-}
-
-#ifdef CONFIG_STACK_GROWSUP
-/*
- * vma is the first one with address > vma->vm_end. Have to extend vma.
- */
-int expand_stack(struct vm_area_struct * vma, unsigned long address)
-{
- int error;
-
- if (!(vma->vm_flags & VM_GROWSUP))
- return -EFAULT;
-
- /*
- * We must make sure the anon_vma is allocated
- * so that the anon_vma locking is not a noop.
- */
- if (unlikely(anon_vma_prepare(vma)))
- return -ENOMEM;
- anon_vma_lock(vma);
-
- /*
- * vma->vm_start/vm_end cannot change under us because the caller
- * is required to hold the mmap_sem in read mode. We need the
- * anon_vma lock to serialize against concurrent expand_stacks.
- */
- address += 4 + PAGE_SIZE - 1;
- address &= PAGE_MASK;
- error = 0;
-
- /* Somebody else might have raced and expanded it already */
- if (address > vma->vm_end) {
- unsigned long size, grow;
-
- size = address - vma->vm_start;
- grow = (address - vma->vm_end) >> PAGE_SHIFT;
-
- error = acct_stack_growth(vma, size, grow);
- if (!error)
- vma->vm_end = address;
- }
- anon_vma_unlock(vma);
- return error;
-}
-
-struct vm_area_struct *
-find_extend_vma(struct mm_struct *mm, unsigned long addr)
-{
- struct vm_area_struct *vma, *prev;
-
- addr &= PAGE_MASK;
- vma = find_vma_prev(mm, addr, &prev);
- if (vma && (vma->vm_start <= addr))
- return vma;
- if (!prev || expand_stack(prev, addr))
- return NULL;
- if (prev->vm_flags & VM_LOCKED) {
- make_pages_present(addr, prev->vm_end);
- }
- return prev;
-}
-#else
-/*
- * vma is the first one with address < vma->vm_start. Have to extend vma.
- */
-int expand_stack(struct vm_area_struct *vma, unsigned long address)
-{
- int error;
-
- /*
- * We must make sure the anon_vma is allocated
- * so that the anon_vma locking is not a noop.
- */
- if (unlikely(anon_vma_prepare(vma)))
- return -ENOMEM;
- anon_vma_lock(vma);
-
- /*
- * vma->vm_start/vm_end cannot change under us because the caller
- * is required to hold the mmap_sem in read mode. We need the
- * anon_vma lock to serialize against concurrent expand_stacks.
- */
- address &= PAGE_MASK;
- error = 0;
-
- /* Somebody else might have raced and expanded it already */
- if (address < vma->vm_start) {
- unsigned long size, grow;
-
- size = vma->vm_end - address;
- grow = (vma->vm_start - address) >> PAGE_SHIFT;
-
- error = acct_stack_growth(vma, size, grow);
- if (!error) {
- vma->vm_start = address;
- vma->vm_pgoff -= grow;
- }
- }
- anon_vma_unlock(vma);
- return error;
-}
-
-struct vm_area_struct *
-find_extend_vma(struct mm_struct * mm, unsigned long addr)
-{
- struct vm_area_struct * vma;
- unsigned long start;
-
- addr &= PAGE_MASK;
- vma = find_vma(mm,addr);
- if (!vma)
- return NULL;
- if (vma->vm_start <= addr)
- return vma;
- if (!(vma->vm_flags & VM_GROWSDOWN))
- return NULL;
- start = vma->vm_start;
- if (expand_stack(vma, addr))
- return NULL;
- if (vma->vm_flags & VM_LOCKED) {
- make_pages_present(addr, start);
- }
- return vma;
-}
-#endif
-
-/*
- * Try to free as many page directory entries as we can,
- * without having to work very hard at actually scanning
- * the page tables themselves.
- *
- * Right now we try to free page tables if we have a nice
- * PGDIR-aligned area that got free'd up. We could be more
- * granular if we want to, but this is fast and simple,
- * and covers the bad cases.
- *
- * "prev", if it exists, points to a vma before the one
- * we just free'd - but there's no telling how much before.
- */
-static void free_pgtables(struct mmu_gather *tlb, struct vm_area_struct *prev,
- unsigned long start, unsigned long end)
-{
- unsigned long first = start & PGDIR_MASK;
- unsigned long last = end + PGDIR_SIZE - 1;
- struct mm_struct *mm = tlb->mm;
-
- if (last > MM_VM_SIZE(mm) || last < end)
- last = MM_VM_SIZE(mm);
-
- if (!prev) {
- prev = mm->mmap;
- if (!prev)
- goto no_mmaps;
- if (prev->vm_end > start) {
- if (last > prev->vm_start)
- last = prev->vm_start;
- goto no_mmaps;
- }
- }
- for (;;) {
- struct vm_area_struct *next = prev->vm_next;
-
- if (next) {
- if (next->vm_start < start) {
- prev = next;
- continue;
- }
- if (last > next->vm_start)
- last = next->vm_start;
- }
- if (prev->vm_end > first)
- first = prev->vm_end;
- break;
- }
-no_mmaps:
- if (last < first) /* for arches with discontiguous pgd indices */
- return;
- if (first < FIRST_USER_PGD_NR * PGDIR_SIZE)
- first = FIRST_USER_PGD_NR * PGDIR_SIZE;
- /* No point trying to free anything if we're in the same pte page */
- if ((first & PMD_MASK) < (last & PMD_MASK)) {
- clear_page_range(tlb, first, last);
- flush_tlb_pgtables(mm, first, last);
- }
-}
-
-/* Normal function to fix up a mapping
- * This function is the default for when an area has no specific
- * function. This may be used as part of a more specific routine.
- *
- * By the time this function is called, the area struct has been
- * removed from the process mapping list.
- */
-static void unmap_vma(struct mm_struct *mm, struct vm_area_struct *area)
-{
- size_t len = area->vm_end - area->vm_start;
-
- area->vm_mm->total_vm -= len >> PAGE_SHIFT;
- if (area->vm_flags & VM_LOCKED)
- area->vm_mm->locked_vm -= len >> PAGE_SHIFT;
- vm_stat_unaccount(area);
- area->vm_mm->unmap_area(area);
- remove_vm_struct(area);
-}
-
-/*
- * Update the VMA and inode share lists.
- *
- * Ok - we have the memory areas we should free on the 'free' list,
- * so release them, and do the vma updates.
- */
-static void unmap_vma_list(struct mm_struct *mm,
- struct vm_area_struct *mpnt)
-{
- do {
- struct vm_area_struct *next = mpnt->vm_next;
- unmap_vma(mm, mpnt);
- mpnt = next;
- } while (mpnt != NULL);
- validate_mm(mm);
-}
-
-/*
- * Get rid of page table information in the indicated region.
- *
- * Called with the page table lock held.
- */
-static void unmap_region(struct mm_struct *mm,
- struct vm_area_struct *vma,
- struct vm_area_struct *prev,
- unsigned long start,
- unsigned long end)
-{
- struct mmu_gather *tlb;
- unsigned long nr_accounted = 0;
-
- lru_add_drain();
- tlb = tlb_gather_mmu(mm, 0);
- unmap_vmas(&tlb, mm, vma, start, end, &nr_accounted, NULL);
- vm_unacct_memory(nr_accounted);
-
- if (is_hugepage_only_range(start, end - start))
- hugetlb_free_pgtables(tlb, prev, start, end);
- else
- free_pgtables(tlb, prev, start, end);
- tlb_finish_mmu(tlb, start, end);
-}
-
-/*
- * Create a list of vma's touched by the unmap, removing them from the mm's
- * vma list as we go..
- */
-static void
-detach_vmas_to_be_unmapped(struct mm_struct *mm, struct vm_area_struct *vma,
- struct vm_area_struct *prev, unsigned long end)
-{
- struct vm_area_struct **insertion_point;
- struct vm_area_struct *tail_vma = NULL;
-
- insertion_point = (prev ? &prev->vm_next : &mm->mmap);
- do {
- rb_erase(&vma->vm_rb, &mm->mm_rb);
- mm->map_count--;
- tail_vma = vma;
- vma = vma->vm_next;
- } while (vma && vma->vm_start < end);
- *insertion_point = vma;
- tail_vma->vm_next = NULL;
- mm->mmap_cache = NULL; /* Kill the cache. */
-}
-
-/*
- * Split a vma into two pieces at address 'addr', a new vma is allocated
- * either for the first part or the the tail.
- */
-int split_vma(struct mm_struct * mm, struct vm_area_struct * vma,
- unsigned long addr, int new_below)
-{
- struct mempolicy *pol;
- struct vm_area_struct *new;
-
- if (is_vm_hugetlb_page(vma) && (addr & ~HPAGE_MASK))
- return -EINVAL;
-
- if (mm->map_count >= sysctl_max_map_count)
- return -ENOMEM;
-
- new = kmem_cache_alloc(vm_area_cachep, SLAB_KERNEL);
- if (!new)
- return -ENOMEM;
-
- /* most fields are the same, copy all, and then fixup */
- *new = *vma;
-
- if (new_below)
- new->vm_end = addr;
- else {
- new->vm_start = addr;
- new->vm_pgoff += ((addr - vma->vm_start) >> PAGE_SHIFT);
- }
-
- pol = mpol_copy(vma_policy(vma));
- if (IS_ERR(pol)) {
- kmem_cache_free(vm_area_cachep, new);
- return PTR_ERR(pol);
- }
- vma_set_policy(new, pol);
-
- if (new->vm_file)
- get_file(new->vm_file);
-
- if (new->vm_ops && new->vm_ops->open)
- new->vm_ops->open(new);
-
- if (new_below)
- vma_adjust(vma, addr, vma->vm_end, vma->vm_pgoff +
- ((addr - new->vm_start) >> PAGE_SHIFT), new);
- else
- vma_adjust(vma, vma->vm_start, addr, vma->vm_pgoff, new);
-
- return 0;
-}
-
-/* Munmap is split into 2 main parts -- this part which finds
- * what needs doing, and the areas themselves, which do the
- * work. This now handles partial unmappings.
- * Jeremy Fitzhardinge <jeremy@xxxxxxxx>
- */
-int do_munmap(struct mm_struct *mm, unsigned long start, size_t len)
-{
- unsigned long end;
- struct vm_area_struct *mpnt, *prev, *last;
-
- if ((start & ~PAGE_MASK) || start > TASK_SIZE || len > TASK_SIZE-start)
- return -EINVAL;
-
- if ((len = PAGE_ALIGN(len)) == 0)
- return -EINVAL;
-
- /* Find the first overlapping VMA */
- mpnt = find_vma_prev(mm, start, &prev);
- if (!mpnt)
- return 0;
- /* we have start < mpnt->vm_end */
-
- /* if it doesn't overlap, we have nothing.. */
- end = start + len;
- if (mpnt->vm_start >= end)
- return 0;
-
- /*
- * If we need to split any vma, do it now to save pain later.
- *
- * Note: mremap's move_vma VM_ACCOUNT handling assumes a partially
- * unmapped vm_area_struct will remain in use: so lower split_vma
- * places tmp vma above, and higher split_vma places tmp vma below.
- */
- if (start > mpnt->vm_start) {
- int error = split_vma(mm, mpnt, start, 0);
- if (error)
- return error;
- prev = mpnt;
- }
-
- /* Does it split the last one? */
- last = find_vma(mm, end);
- if (last && end > last->vm_start) {
- int error = split_vma(mm, last, end, 1);
- if (error)
- return error;
- }
- mpnt = prev? prev->vm_next: mm->mmap;
-
- /*
- * Remove the vma's, and unmap the actual pages
- */
- detach_vmas_to_be_unmapped(mm, mpnt, prev, end);
- spin_lock(&mm->page_table_lock);
- unmap_region(mm, mpnt, prev, start, end);
- spin_unlock(&mm->page_table_lock);
-
- /* Fix up all other VM information */
- unmap_vma_list(mm, mpnt);
-
- return 0;
-}
-
-EXPORT_SYMBOL(do_munmap);
-
-asmlinkage long sys_munmap(unsigned long addr, size_t len)
-{
- int ret;
- struct mm_struct *mm = current->mm;
-
- profile_munmap(addr);
-
- down_write(&mm->mmap_sem);
- ret = do_munmap(mm, addr, len);
- up_write(&mm->mmap_sem);
- return ret;
-}
-
-static inline void verify_mm_writelocked(struct mm_struct *mm)
-{
-#ifdef CONFIG_DEBUG_KERNEL
- if (unlikely(down_read_trylock(&mm->mmap_sem))) {
- WARN_ON(1);
- up_read(&mm->mmap_sem);
- }
-#endif
-}
-
-/*
- * this is really a simplified "do_mmap". it only handles
- * anonymous maps. eventually we may be able to do some
- * brk-specific accounting here.
- */
-unsigned long do_brk(unsigned long addr, unsigned long len)
-{
- struct mm_struct * mm = current->mm;
- struct vm_area_struct * vma, * prev;
- unsigned long flags;
- struct rb_node ** rb_link, * rb_parent;
- pgoff_t pgoff = addr >> PAGE_SHIFT;
-
- len = PAGE_ALIGN(len);
- if (!len)
- return addr;
-
- if ((addr + len) > TASK_SIZE || (addr + len) < addr)
- return -EINVAL;
-
- /*
- * mlock MCL_FUTURE?
- */
- if (mm->def_flags & VM_LOCKED) {
- unsigned long locked, lock_limit;
- locked = mm->locked_vm << PAGE_SHIFT;
- lock_limit = current->signal->rlim[RLIMIT_MEMLOCK].rlim_cur;
- locked += len;
- if (locked > lock_limit && !capable(CAP_IPC_LOCK))
- return -EAGAIN;
- }
-
- /*
- * mm->mmap_sem is required to protect against another thread
- * changing the mappings in case we sleep.
- */
- verify_mm_writelocked(mm);
-
- /*
- * Clear old maps. this also does some error checking for us
- */
- munmap_back:
- vma = find_vma_prepare(mm, addr, &prev, &rb_link, &rb_parent);
- if (vma && vma->vm_start < addr + len) {
- if (do_munmap(mm, addr, len))
- return -ENOMEM;
- goto munmap_back;
- }
-
- /* Check against address space limits *after* clearing old maps... */
- if ((mm->total_vm << PAGE_SHIFT) + len
- > current->signal->rlim[RLIMIT_AS].rlim_cur)
- return -ENOMEM;
-
- if (mm->map_count > sysctl_max_map_count)
- return -ENOMEM;
-
- if (security_vm_enough_memory(len >> PAGE_SHIFT))
- return -ENOMEM;
-
- flags = VM_DATA_DEFAULT_FLAGS | VM_ACCOUNT | mm->def_flags;
-
- /* Can we just expand an old private anonymous mapping? */
- if (vma_merge(mm, prev, addr, addr + len, flags,
- NULL, NULL, pgoff, NULL))
- goto out;
-
- /*
- * create a vma struct for an anonymous mapping
- */
- vma = kmem_cache_alloc(vm_area_cachep, SLAB_KERNEL);
- if (!vma) {
- vm_unacct_memory(len >> PAGE_SHIFT);
- return -ENOMEM;
- }
- memset(vma, 0, sizeof(*vma));
-
- vma->vm_mm = mm;
- vma->vm_start = addr;
- vma->vm_end = addr + len;
- vma->vm_pgoff = pgoff;
- vma->vm_flags = flags;
- vma->vm_page_prot = protection_map[flags & 0x0f];
- vma_link(mm, vma, prev, rb_link, rb_parent);
-out:
- mm->total_vm += len >> PAGE_SHIFT;
- if (flags & VM_LOCKED) {
- mm->locked_vm += len >> PAGE_SHIFT;
- make_pages_present(addr, addr + len);
- }
- acct_update_integrals();
- update_mem_hiwater();
- return addr;
-}
-
-EXPORT_SYMBOL(do_brk);
-
-/* Release all mmaps. */
-void exit_mmap(struct mm_struct *mm)
-{
- struct mmu_gather *tlb;
- struct vm_area_struct *vma;
- unsigned long nr_accounted = 0;
-
-#ifdef arch_exit_mmap
- arch_exit_mmap(mm);
-#endif
-
- lru_add_drain();
-
- spin_lock(&mm->page_table_lock);
-
- tlb = tlb_gather_mmu(mm, 1);
- flush_cache_mm(mm);
- /* Use ~0UL here to ensure all VMAs in the mm are unmapped */
- mm->map_count -= unmap_vmas(&tlb, mm, mm->mmap, 0,
- ~0UL, &nr_accounted, NULL);
- vm_unacct_memory(nr_accounted);
- BUG_ON(mm->map_count); /* This is just debugging */
- clear_page_range(tlb, FIRST_USER_PGD_NR * PGDIR_SIZE, MM_VM_SIZE(mm));
-
- tlb_finish_mmu(tlb, 0, MM_VM_SIZE(mm));
-
- vma = mm->mmap;
- mm->mmap = mm->mmap_cache = NULL;
- mm->mm_rb = RB_ROOT;
- mm->rss = 0;
- mm->total_vm = 0;
- mm->locked_vm = 0;
-
- spin_unlock(&mm->page_table_lock);
-
- /*
- * Walk the list again, actually closing and freeing it
- * without holding any MM locks.
- */
- while (vma) {
- struct vm_area_struct *next = vma->vm_next;
- remove_vm_struct(vma);
- vma = next;
- }
-}
-
-/* Insert vm structure into process list sorted by address
- * and into the inode's i_mmap tree. If vm_file is non-NULL
- * then i_mmap_lock is taken here.
- */
-int insert_vm_struct(struct mm_struct * mm, struct vm_area_struct * vma)
-{
- struct vm_area_struct * __vma, * prev;
- struct rb_node ** rb_link, * rb_parent;
-
- /*
- * The vm_pgoff of a purely anonymous vma should be irrelevant
- * until its first write fault, when page's anon_vma and index
- * are set. But now set the vm_pgoff it will almost certainly
- * end up with (unless mremap moves it elsewhere before that
- * first wfault), so /proc/pid/maps tells a consistent story.
- *
- * By setting it to reflect the virtual start address of the
- * vma, merges and splits can happen in a seamless way, just
- * using the existing file pgoff checks and manipulations.
- * Similarly in do_mmap_pgoff and in do_brk.
- */
- if (!vma->vm_file) {
- BUG_ON(vma->anon_vma);
- vma->vm_pgoff = vma->vm_start >> PAGE_SHIFT;
- }
- __vma = find_vma_prepare(mm,vma->vm_start,&prev,&rb_link,&rb_parent);
- if (__vma && __vma->vm_start < vma->vm_end)
- return -ENOMEM;
- vma_link(mm, vma, prev, rb_link, rb_parent);
- return 0;
-}
-
-/*
- * Copy the vma structure to a new location in the same mm,
- * prior to moving page table entries, to effect an mremap move.
- */
-struct vm_area_struct *copy_vma(struct vm_area_struct **vmap,
- unsigned long addr, unsigned long len, pgoff_t pgoff)
-{
- struct vm_area_struct *vma = *vmap;
- unsigned long vma_start = vma->vm_start;
- struct mm_struct *mm = vma->vm_mm;
- struct vm_area_struct *new_vma, *prev;
- struct rb_node **rb_link, *rb_parent;
- struct mempolicy *pol;
-
- /*
- * If anonymous vma has not yet been faulted, update new pgoff
- * to match new location, to increase its chance of merging.
- */
- if (!vma->vm_file && !vma->anon_vma)
- pgoff = addr >> PAGE_SHIFT;
-
- find_vma_prepare(mm, addr, &prev, &rb_link, &rb_parent);
- new_vma = vma_merge(mm, prev, addr, addr + len, vma->vm_flags,
- vma->anon_vma, vma->vm_file, pgoff, vma_policy(vma));
- if (new_vma) {
- /*
- * Source vma may have been merged into new_vma
- */
- if (vma_start >= new_vma->vm_start &&
- vma_start < new_vma->vm_end)
- *vmap = new_vma;
- } else {
- new_vma = kmem_cache_alloc(vm_area_cachep, SLAB_KERNEL);
- if (new_vma) {
- *new_vma = *vma;
- pol = mpol_copy(vma_policy(vma));
- if (IS_ERR(pol)) {
- kmem_cache_free(vm_area_cachep, new_vma);
- return NULL;
- }
- vma_set_policy(new_vma, pol);
- new_vma->vm_start = addr;
- new_vma->vm_end = addr + len;
- new_vma->vm_pgoff = pgoff;
- if (new_vma->vm_file)
- get_file(new_vma->vm_file);
- if (new_vma->vm_ops && new_vma->vm_ops->open)
- new_vma->vm_ops->open(new_vma);
- vma_link(mm, new_vma, prev, rb_link, rb_parent);
- }
- }
- return new_vma;
-}
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.6.11-xen-sparse/mm/page_alloc.c
--- a/linux-2.6.11-xen-sparse/mm/page_alloc.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,2157 +0,0 @@
-/*
- * linux/mm/page_alloc.c
- *
- * Manages the free list, the system allocates free pages here.
- * Note that kmalloc() lives in slab.c
- *
- * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds
- * Swap reorganised 29.12.95, Stephen Tweedie
- * Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999
- * Reshaped it to be a zoned allocator, Ingo Molnar, Red Hat, 1999
- * Discontiguous memory support, Kanoj Sarcar, SGI, Nov 1999
- * Zone balancing, Kanoj Sarcar, SGI, Jan 2000
- * Per cpu hot/cold page lists, bulk allocation, Martin J. Bligh, Sept 2002
- * (lots of bits borrowed from Ingo Molnar & Andrew Morton)
- */
-
-#include <linux/config.h>
-#include <linux/stddef.h>
-#include <linux/mm.h>
-#include <linux/swap.h>
-#include <linux/interrupt.h>
-#include <linux/pagemap.h>
-#include <linux/bootmem.h>
-#include <linux/compiler.h>
-#include <linux/module.h>
-#include <linux/suspend.h>
-#include <linux/pagevec.h>
-#include <linux/blkdev.h>
-#include <linux/slab.h>
-#include <linux/notifier.h>
-#include <linux/topology.h>
-#include <linux/sysctl.h>
-#include <linux/cpu.h>
-#include <linux/nodemask.h>
-#include <linux/vmalloc.h>
-
-#include <asm/tlbflush.h>
-#include "internal.h"
-
-/* MCD - HACK: Find somewhere to initialize this EARLY, or make this
initializer cleaner */
-nodemask_t node_online_map = { { [0] = 1UL } };
-nodemask_t node_possible_map = NODE_MASK_ALL;
-struct pglist_data *pgdat_list;
-unsigned long totalram_pages;
-unsigned long totalhigh_pages;
-long nr_swap_pages;
-/*
- * results with 256, 32 in the lowmem_reserve sysctl:
- * 1G machine -> (16M dma, 800M-16M normal, 1G-800M high)
- * 1G machine -> (16M dma, 784M normal, 224M high)
- * NORMAL allocation will leave 784M/256 of ram reserved in the ZONE_DMA
- * HIGHMEM allocation will leave 224M/32 of ram reserved in ZONE_NORMAL
- * HIGHMEM allocation will (224M+784M)/256 of ram reserved in ZONE_DMA
- */
-int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES-1] = { 256, 32 };
-
-EXPORT_SYMBOL(totalram_pages);
-EXPORT_SYMBOL(nr_swap_pages);
-
-/*
- * Used by page_zone() to look up the address of the struct zone whose
- * id is encoded in the upper bits of page->flags
- */
-struct zone *zone_table[1 << (ZONES_SHIFT + NODES_SHIFT)];
-EXPORT_SYMBOL(zone_table);
-
-static char *zone_names[MAX_NR_ZONES] = { "DMA", "Normal", "HighMem" };
-int min_free_kbytes = 1024;
-
-unsigned long __initdata nr_kernel_pages;
-unsigned long __initdata nr_all_pages;
-
-/*
- * Temporary debugging check for pages not lying within a given zone.
- */
-static int bad_range(struct zone *zone, struct page *page)
-{
- if (page_to_pfn(page) >= zone->zone_start_pfn + zone->spanned_pages)
- return 1;
- if (page_to_pfn(page) < zone->zone_start_pfn)
- return 1;
-#ifdef CONFIG_HOLES_IN_ZONE
- if (!pfn_valid(page_to_pfn(page)))
- return 1;
-#endif
- if (zone != page_zone(page))
- return 1;
- return 0;
-}
-
-static void bad_page(const char *function, struct page *page)
-{
- printk(KERN_EMERG "Bad page state at %s (in process '%s', page %p)\n",
- function, current->comm, page);
- printk(KERN_EMERG "flags:0x%0*lx mapping:%p mapcount:%d count:%d\n",
- (int)(2*sizeof(page_flags_t)), (unsigned long)page->flags,
- page->mapping, page_mapcount(page), page_count(page));
- printk(KERN_EMERG "Backtrace:\n");
- dump_stack();
- printk(KERN_EMERG "Trying to fix it up, but a reboot is needed\n");
- page->flags &= ~(1 << PG_private |
- 1 << PG_locked |
- 1 << PG_lru |
- 1 << PG_active |
- 1 << PG_dirty |
- 1 << PG_swapcache |
- 1 << PG_writeback);
- set_page_count(page, 0);
- reset_page_mapcount(page);
- page->mapping = NULL;
- tainted |= TAINT_BAD_PAGE;
-}
-
-#ifndef CONFIG_HUGETLB_PAGE
-#define prep_compound_page(page, order) do { } while (0)
-#define destroy_compound_page(page, order) do { } while (0)
-#else
-/*
- * Higher-order pages are called "compound pages". They are structured thusly:
- *
- * The first PAGE_SIZE page is called the "head page".
- *
- * The remaining PAGE_SIZE pages are called "tail pages".
- *
- * All pages have PG_compound set. All pages have their ->private pointing at
- * the head page (even the head page has this).
- *
- * The first tail page's ->mapping, if non-zero, holds the address of the
- * compound page's put_page() function.
- *
- * The order of the allocation is stored in the first tail page's ->index
- * This is only for debug at present. This usage means that zero-order pages
- * may not be compound.
- */
-static void prep_compound_page(struct page *page, unsigned long order)
-{
- int i;
- int nr_pages = 1 << order;
-
- page[1].mapping = NULL;
- page[1].index = order;
- for (i = 0; i < nr_pages; i++) {
- struct page *p = page + i;
-
- SetPageCompound(p);
- p->private = (unsigned long)page;
- }
-}
-
-static void destroy_compound_page(struct page *page, unsigned long order)
-{
- int i;
- int nr_pages = 1 << order;
-
- if (!PageCompound(page))
- return;
-
- if (page[1].index != order)
- bad_page(__FUNCTION__, page);
-
- for (i = 0; i < nr_pages; i++) {
- struct page *p = page + i;
-
- if (!PageCompound(p))
- bad_page(__FUNCTION__, page);
- if (p->private != (unsigned long)page)
- bad_page(__FUNCTION__, page);
- ClearPageCompound(p);
- }
-}
-#endif /* CONFIG_HUGETLB_PAGE */
-
-/*
- * function for dealing with page's order in buddy system.
- * zone->lock is already acquired when we use these.
- * So, we don't need atomic page->flags operations here.
- */
-static inline unsigned long page_order(struct page *page) {
- return page->private;
-}
-
-static inline void set_page_order(struct page *page, int order) {
- page->private = order;
- __SetPagePrivate(page);
-}
-
-static inline void rmv_page_order(struct page *page)
-{
- __ClearPagePrivate(page);
- page->private = 0;
-}
-
-/*
- * This function checks whether a page is free && is the buddy
- * we can do coalesce a page and its buddy if
- * (a) the buddy is free &&
- * (b) the buddy is on the buddy system &&
- * (c) a page and its buddy have the same order.
- * for recording page's order, we use page->private and PG_private.
- *
- */
-static inline int page_is_buddy(struct page *page, int order)
-{
- if (PagePrivate(page) &&
- (page_order(page) == order) &&
- !PageReserved(page) &&
- page_count(page) == 0)
- return 1;
- return 0;
-}
-
-/*
- * Freeing function for a buddy system allocator.
- *
- * The concept of a buddy system is to maintain direct-mapped table
- * (containing bit values) for memory blocks of various "orders".
- * The bottom level table contains the map for the smallest allocatable
- * units of memory (here, pages), and each level above it describes
- * pairs of units from the levels below, hence, "buddies".
- * At a high level, all that happens here is marking the table entry
- * at the bottom level available, and propagating the changes upward
- * as necessary, plus some accounting needed to play nicely with other
- * parts of the VM system.
- * At each level, we keep a list of pages, which are heads of continuous
- * free pages of length of (1 << order) and marked with PG_Private.Page's
- * order is recorded in page->private field.
- * So when we are allocating or freeing one, we can derive the state of the
- * other. That is, if we allocate a small block, and both were
- * free, the remainder of the region must be split into blocks.
- * If a block is freed, and its buddy is also free, then this
- * triggers coalescing into a block of larger size.
- *
- * -- wli
- */
-
-static inline void __free_pages_bulk (struct page *page, struct page *base,
- struct zone *zone, unsigned int order)
-{
- unsigned long page_idx;
- struct page *coalesced;
- int order_size = 1 << order;
-
- if (unlikely(order))
- destroy_compound_page(page, order);
-
- page_idx = page - base;
-
- BUG_ON(page_idx & (order_size - 1));
- BUG_ON(bad_range(zone, page));
-
- zone->free_pages += order_size;
- while (order < MAX_ORDER-1) {
- struct free_area *area;
- struct page *buddy;
- int buddy_idx;
-
- buddy_idx = (page_idx ^ (1 << order));
- buddy = base + buddy_idx;
- if (bad_range(zone, buddy))
- break;
- if (!page_is_buddy(buddy, order))
- break;
- /* Move the buddy up one level. */
- list_del(&buddy->lru);
- area = zone->free_area + order;
- area->nr_free--;
- rmv_page_order(buddy);
- page_idx &= buddy_idx;
- order++;
- }
- coalesced = base + page_idx;
- set_page_order(coalesced, order);
- list_add(&coalesced->lru, &zone->free_area[order].free_list);
- zone->free_area[order].nr_free++;
-}
-
-static inline void free_pages_check(const char *function, struct page *page)
-{
- if ( page_mapped(page) ||
- page->mapping != NULL ||
- page_count(page) != 0 ||
- (page->flags & (
- 1 << PG_lru |
- 1 << PG_private |
- 1 << PG_locked |
- 1 << PG_active |
- 1 << PG_reclaim |
- 1 << PG_slab |
- 1 << PG_swapcache |
- 1 << PG_writeback )))
- bad_page(function, page);
- if (PageDirty(page))
- ClearPageDirty(page);
-}
-
-/*
- * Frees a list of pages.
- * Assumes all pages on list are in same zone, and of same order.
- * count is the number of pages to free, or 0 for all on the list.
- *
- * If the zone was previously in an "all pages pinned" state then look to
- * see if this freeing clears that state.
- *
- * And clear the zone's pages_scanned counter, to hold off the "all pages are
- * pinned" detection logic.
- */
-static int
-free_pages_bulk(struct zone *zone, int count,
- struct list_head *list, unsigned int order)
-{
- unsigned long flags;
- struct page *base, *page = NULL;
- int ret = 0;
-
- base = zone->zone_mem_map;
- spin_lock_irqsave(&zone->lock, flags);
- zone->all_unreclaimable = 0;
- zone->pages_scanned = 0;
- while (!list_empty(list) && count--) {
- page = list_entry(list->prev, struct page, lru);
- /* have to delete it as __free_pages_bulk list manipulates */
- list_del(&page->lru);
- __free_pages_bulk(page, base, zone, order);
- ret++;
- }
- spin_unlock_irqrestore(&zone->lock, flags);
- return ret;
-}
-
-void __free_pages_ok(struct page *page, unsigned int order)
-{
- LIST_HEAD(list);
- int i;
-
- if (arch_free_page(page, order))
- return;
-
- mod_page_state(pgfree, 1 << order);
-
-#ifndef CONFIG_MMU
- if (order > 0)
- for (i = 1 ; i < (1 << order) ; ++i)
- __put_page(page + i);
-#endif
-
- for (i = 0 ; i < (1 << order) ; ++i)
- free_pages_check(__FUNCTION__, page + i);
- list_add(&page->lru, &list);
- kernel_map_pages(page, 1<<order, 0);
- free_pages_bulk(page_zone(page), 1, &list, order);
-}
-
-
-/*
- * The order of subdivision here is critical for the IO subsystem.
- * Please do not alter this order without good reasons and regression
- * testing. Specifically, as large blocks of memory are subdivided,
- * the order in which smaller blocks are delivered depends on the order
- * they're subdivided in this function. This is the primary factor
- * influencing the order in which pages are delivered to the IO
- * subsystem according to empirical testing, and this is also justified
- * by considering the behavior of a buddy system containing a single
- * large block of memory acted on by a series of small allocations.
- * This behavior is a critical factor in sglist merging's success.
- *
- * -- wli
- */
-static inline struct page *
-expand(struct zone *zone, struct page *page,
- int low, int high, struct free_area *area)
-{
- unsigned long size = 1 << high;
-
- while (high > low) {
- area--;
- high--;
- size >>= 1;
- BUG_ON(bad_range(zone, &page[size]));
- list_add(&page[size].lru, &area->free_list);
- area->nr_free++;
- set_page_order(&page[size], high);
- }
- return page;
-}
-
-void set_page_refs(struct page *page, int order)
-{
-#ifdef CONFIG_MMU
- set_page_count(page, 1);
-#else
- int i;
-
- /*
- * We need to reference all the pages for this order, otherwise if
- * anyone accesses one of the pages with (get/put) it will be freed.
- * - eg: access_process_vm()
- */
- for (i = 0; i < (1 << order); i++)
- set_page_count(page + i, 1);
-#endif /* CONFIG_MMU */
-}
-
-/*
- * This page is about to be returned from the page allocator
- */
-static void prep_new_page(struct page *page, int order)
-{
- if (page->mapping || page_mapped(page) ||
- (page->flags & (
- 1 << PG_private |
- 1 << PG_locked |
- 1 << PG_lru |
- 1 << PG_active |
- 1 << PG_dirty |
- 1 << PG_reclaim |
- 1 << PG_swapcache |
- 1 << PG_writeback )))
- bad_page(__FUNCTION__, page);
-
- page->flags &= ~(1 << PG_uptodate | 1 << PG_error |
- 1 << PG_referenced | 1 << PG_arch_1 |
- 1 << PG_checked | 1 << PG_mappedtodisk);
- page->private = 0;
- set_page_refs(page, order);
- kernel_map_pages(page, 1 << order, 1);
-}
-
-/*
- * Do the hard work of removing an element from the buddy allocator.
- * Call me with the zone->lock already held.
- */
-static struct page *__rmqueue(struct zone *zone, unsigned int order)
-{
- struct free_area * area;
- unsigned int current_order;
- struct page *page;
-
- for (current_order = order; current_order < MAX_ORDER; ++current_order)
{
- area = zone->free_area + current_order;
- if (list_empty(&area->free_list))
- continue;
-
- page = list_entry(area->free_list.next, struct page, lru);
- list_del(&page->lru);
- rmv_page_order(page);
- area->nr_free--;
- zone->free_pages -= 1UL << order;
- return expand(zone, page, order, current_order, area);
- }
-
- return NULL;
-}
-
-/*
- * Obtain a specified number of elements from the buddy allocator, all under
- * a single hold of the lock, for efficiency. Add them to the supplied list.
- * Returns the number of new pages which were placed at *list.
- */
-static int rmqueue_bulk(struct zone *zone, unsigned int order,
- unsigned long count, struct list_head *list)
-{
- unsigned long flags;
- int i;
- int allocated = 0;
- struct page *page;
-
- spin_lock_irqsave(&zone->lock, flags);
- for (i = 0; i < count; ++i) {
- page = __rmqueue(zone, order);
- if (page == NULL)
- break;
- allocated++;
- list_add_tail(&page->lru, list);
- }
- spin_unlock_irqrestore(&zone->lock, flags);
- return allocated;
-}
-
-#if defined(CONFIG_PM) || defined(CONFIG_HOTPLUG_CPU)
-static void __drain_pages(unsigned int cpu)
-{
- struct zone *zone;
- int i;
-
- for_each_zone(zone) {
- struct per_cpu_pageset *pset;
-
- pset = &zone->pageset[cpu];
- for (i = 0; i < ARRAY_SIZE(pset->pcp); i++) {
- struct per_cpu_pages *pcp;
-
- pcp = &pset->pcp[i];
- pcp->count -= free_pages_bulk(zone, pcp->count,
- &pcp->list, 0);
- }
- }
-}
-#endif /* CONFIG_PM || CONFIG_HOTPLUG_CPU */
-
-#ifdef CONFIG_PM
-
-void mark_free_pages(struct zone *zone)
-{
- unsigned long zone_pfn, flags;
- int order;
- struct list_head *curr;
-
- if (!zone->spanned_pages)
- return;
-
- spin_lock_irqsave(&zone->lock, flags);
- for (zone_pfn = 0; zone_pfn < zone->spanned_pages; ++zone_pfn)
- ClearPageNosaveFree(pfn_to_page(zone_pfn +
zone->zone_start_pfn));
-
- for (order = MAX_ORDER - 1; order >= 0; --order)
- list_for_each(curr, &zone->free_area[order].free_list) {
- unsigned long start_pfn, i;
-
- start_pfn = page_to_pfn(list_entry(curr, struct page,
lru));
-
- for (i=0; i < (1<<order); i++)
- SetPageNosaveFree(pfn_to_page(start_pfn+i));
- }
- spin_unlock_irqrestore(&zone->lock, flags);
-}
-
-/*
- * Spill all of this CPU's per-cpu pages back into the buddy allocator.
- */
-void drain_local_pages(void)
-{
- unsigned long flags;
-
- local_irq_save(flags);
- __drain_pages(smp_processor_id());
- local_irq_restore(flags);
-}
-#endif /* CONFIG_PM */
-
-static void zone_statistics(struct zonelist *zonelist, struct zone *z)
-{
-#ifdef CONFIG_NUMA
- unsigned long flags;
- int cpu;
- pg_data_t *pg = z->zone_pgdat;
- pg_data_t *orig = zonelist->zones[0]->zone_pgdat;
- struct per_cpu_pageset *p;
-
- local_irq_save(flags);
- cpu = smp_processor_id();
- p = &z->pageset[cpu];
- if (pg == orig) {
- z->pageset[cpu].numa_hit++;
- } else {
- p->numa_miss++;
- zonelist->zones[0]->pageset[cpu].numa_foreign++;
- }
- if (pg == NODE_DATA(numa_node_id()))
- p->local_node++;
- else
- p->other_node++;
- local_irq_restore(flags);
-#endif
-}
-
-/*
- * Free a 0-order page
- */
-static void FASTCALL(free_hot_cold_page(struct page *page, int cold));
-static void fastcall free_hot_cold_page(struct page *page, int cold)
-{
- struct zone *zone = page_zone(page);
- struct per_cpu_pages *pcp;
- unsigned long flags;
-
- if (arch_free_page(page, 0))
- return;
-
- kernel_map_pages(page, 1, 0);
- inc_page_state(pgfree);
- if (PageAnon(page))
- page->mapping = NULL;
- free_pages_check(__FUNCTION__, page);
- pcp = &zone->pageset[get_cpu()].pcp[cold];
- local_irq_save(flags);
- if (pcp->count >= pcp->high)
- pcp->count -= free_pages_bulk(zone, pcp->batch, &pcp->list, 0);
- list_add(&page->lru, &pcp->list);
- pcp->count++;
- local_irq_restore(flags);
- put_cpu();
-}
-
-void fastcall free_hot_page(struct page *page)
-{
- free_hot_cold_page(page, 0);
-}
-
-void fastcall free_cold_page(struct page *page)
-{
- free_hot_cold_page(page, 1);
-}
-
-static inline void prep_zero_page(struct page *page, int order, int gfp_flags)
-{
- int i;
-
- BUG_ON((gfp_flags & (__GFP_WAIT | __GFP_HIGHMEM)) == __GFP_HIGHMEM);
- for(i = 0; i < (1 << order); i++)
- clear_highpage(page + i);
-}
-
-/*
- * Really, prep_compound_page() should be called from __rmqueue_bulk(). But
- * we cheat by calling it from here, in the order > 0 path. Saves a branch
- * or two.
- */
-static struct page *
-buffered_rmqueue(struct zone *zone, int order, int gfp_flags)
-{
- unsigned long flags;
- struct page *page = NULL;
- int cold = !!(gfp_flags & __GFP_COLD);
-
- if (order == 0) {
- struct per_cpu_pages *pcp;
-
- pcp = &zone->pageset[get_cpu()].pcp[cold];
- local_irq_save(flags);
- if (pcp->count <= pcp->low)
- pcp->count += rmqueue_bulk(zone, 0,
- pcp->batch, &pcp->list);
- if (pcp->count) {
- page = list_entry(pcp->list.next, struct page, lru);
- list_del(&page->lru);
- pcp->count--;
- }
- local_irq_restore(flags);
- put_cpu();
- }
-
- if (page == NULL) {
- spin_lock_irqsave(&zone->lock, flags);
- page = __rmqueue(zone, order);
- spin_unlock_irqrestore(&zone->lock, flags);
- }
-
- if (page != NULL) {
- BUG_ON(bad_range(zone, page));
- mod_page_state_zone(zone, pgalloc, 1 << order);
- prep_new_page(page, order);
-
- if (gfp_flags & __GFP_ZERO)
- prep_zero_page(page, order, gfp_flags);
-
- if (order && (gfp_flags & __GFP_COMP))
- prep_compound_page(page, order);
- }
- return page;
-}
-
-/*
- * Return 1 if free pages are above 'mark'. This takes into account the order
- * of the allocation.
- */
-int zone_watermark_ok(struct zone *z, int order, unsigned long mark,
- int classzone_idx, int can_try_harder, int gfp_high)
-{
- /* free_pages my go negative - that's OK */
- long min = mark, free_pages = z->free_pages - (1 << order) + 1;
- int o;
-
- if (gfp_high)
- min -= min / 2;
- if (can_try_harder)
- min -= min / 4;
-
- if (free_pages <= min + z->lowmem_reserve[classzone_idx])
- return 0;
- for (o = 0; o < order; o++) {
- /* At the next order, this order's pages become unavailable */
- free_pages -= z->free_area[o].nr_free << o;
-
- /* Require fewer higher order pages to be free */
- min >>= 1;
-
- if (free_pages <= min)
- return 0;
- }
- return 1;
-}
-
-/*
- * This is the 'heart' of the zoned buddy allocator.
- */
-struct page * fastcall
-__alloc_pages(unsigned int gfp_mask, unsigned int order,
- struct zonelist *zonelist)
-{
- const int wait = gfp_mask & __GFP_WAIT;
- struct zone **zones, *z;
- struct page *page;
- struct reclaim_state reclaim_state;
- struct task_struct *p = current;
- int i;
- int classzone_idx;
- int do_retry;
- int can_try_harder;
- int did_some_progress;
-
- might_sleep_if(wait);
-
- /*
- * The caller may dip into page reserves a bit more if the caller
- * cannot run direct reclaim, or is the caller has realtime scheduling
- * policy
- */
- can_try_harder = (unlikely(rt_task(p)) && !in_interrupt()) || !wait;
-
- zones = zonelist->zones; /* the list of zones suitable for gfp_mask */
-
- if (unlikely(zones[0] == NULL)) {
- /* Should this ever happen?? */
- return NULL;
- }
-
- classzone_idx = zone_idx(zones[0]);
-
- restart:
- /* Go through the zonelist once, looking for a zone with enough free */
- for (i = 0; (z = zones[i]) != NULL; i++) {
-
- if (!zone_watermark_ok(z, order, z->pages_low,
- classzone_idx, 0, 0))
- continue;
-
- page = buffered_rmqueue(z, order, gfp_mask);
- if (page)
- goto got_pg;
- }
-
- for (i = 0; (z = zones[i]) != NULL; i++)
- wakeup_kswapd(z, order);
-
- /*
- * Go through the zonelist again. Let __GFP_HIGH and allocations
- * coming from realtime tasks to go deeper into reserves
- */
- for (i = 0; (z = zones[i]) != NULL; i++) {
- if (!zone_watermark_ok(z, order, z->pages_min,
- classzone_idx, can_try_harder,
- gfp_mask & __GFP_HIGH))
- continue;
-
- page = buffered_rmqueue(z, order, gfp_mask);
- if (page)
- goto got_pg;
- }
-
- /* This allocation should allow future memory freeing. */
- if (((p->flags & PF_MEMALLOC) ||
unlikely(test_thread_flag(TIF_MEMDIE))) && !in_interrupt()) {
- /* go through the zonelist yet again, ignoring mins */
- for (i = 0; (z = zones[i]) != NULL; i++) {
- page = buffered_rmqueue(z, order, gfp_mask);
- if (page)
- goto got_pg;
- }
- goto nopage;
- }
-
- /* Atomic allocations - we can't balance anything */
- if (!wait)
- goto nopage;
-
-rebalance:
- cond_resched();
-
- /* We now go into synchronous reclaim */
- p->flags |= PF_MEMALLOC;
- reclaim_state.reclaimed_slab = 0;
- p->reclaim_state = &reclaim_state;
-
- did_some_progress = try_to_free_pages(zones, gfp_mask, order);
-
- p->reclaim_state = NULL;
- p->flags &= ~PF_MEMALLOC;
-
- cond_resched();
-
- if (likely(did_some_progress)) {
- /*
- * Go through the zonelist yet one more time, keep
- * very high watermark here, this is only to catch
- * a parallel oom killing, we must fail if we're still
- * under heavy pressure.
- */
- for (i = 0; (z = zones[i]) != NULL; i++) {
- if (!zone_watermark_ok(z, order, z->pages_min,
- classzone_idx, can_try_harder,
- gfp_mask & __GFP_HIGH))
- continue;
-
- page = buffered_rmqueue(z, order, gfp_mask);
- if (page)
- goto got_pg;
- }
- } else if ((gfp_mask & __GFP_FS) && !(gfp_mask & __GFP_NORETRY)) {
- /*
- * Go through the zonelist yet one more time, keep
- * very high watermark here, this is only to catch
- * a parallel oom killing, we must fail if we're still
- * under heavy pressure.
- */
- for (i = 0; (z = zones[i]) != NULL; i++) {
- if (!zone_watermark_ok(z, order, z->pages_high,
- classzone_idx, 0, 0))
- continue;
-
- page = buffered_rmqueue(z, order, gfp_mask);
- if (page)
- goto got_pg;
- }
-
- out_of_memory(gfp_mask);
- goto restart;
- }
-
- /*
- * Don't let big-order allocations loop unless the caller explicitly
- * requests that. Wait for some write requests to complete then retry.
- *
- * In this implementation, __GFP_REPEAT means __GFP_NOFAIL for order
- * <= 3, but that may not be true in other implementations.
- */
- do_retry = 0;
- if (!(gfp_mask & __GFP_NORETRY)) {
- if ((order <= 3) || (gfp_mask & __GFP_REPEAT))
- do_retry = 1;
- if (gfp_mask & __GFP_NOFAIL)
- do_retry = 1;
- }
- if (do_retry) {
- blk_congestion_wait(WRITE, HZ/50);
- goto rebalance;
- }
-
-nopage:
- if (!(gfp_mask & __GFP_NOWARN) && printk_ratelimit()) {
- printk(KERN_WARNING "%s: page allocation failure."
- " order:%d, mode:0x%x\n",
- p->comm, order, gfp_mask);
- dump_stack();
- }
- return NULL;
-got_pg:
- zone_statistics(zonelist, z);
- return page;
-}
-
-EXPORT_SYMBOL(__alloc_pages);
-
-/*
- * Common helper functions.
- */
-fastcall unsigned long __get_free_pages(unsigned int gfp_mask, unsigned int
order)
-{
- struct page * page;
- page = alloc_pages(gfp_mask, order);
- if (!page)
- return 0;
- return (unsigned long) page_address(page);
-}
-
-EXPORT_SYMBOL(__get_free_pages);
-
-fastcall unsigned long get_zeroed_page(unsigned int gfp_mask)
-{
- struct page * page;
-
- /*
- * get_zeroed_page() returns a 32-bit address, which cannot represent
- * a highmem page
- */
- BUG_ON(gfp_mask & __GFP_HIGHMEM);
-
- page = alloc_pages(gfp_mask | __GFP_ZERO, 0);
- if (page)
- return (unsigned long) page_address(page);
- return 0;
-}
-
-EXPORT_SYMBOL(get_zeroed_page);
-
-void __pagevec_free(struct pagevec *pvec)
-{
- int i = pagevec_count(pvec);
-
- while (--i >= 0)
- free_hot_cold_page(pvec->pages[i], pvec->cold);
-}
-
-fastcall void __free_pages(struct page *page, unsigned int order)
-{
- if (!PageReserved(page) && put_page_testzero(page)) {
- if (order == 0)
- free_hot_page(page);
- else
- __free_pages_ok(page, order);
- }
-}
-
-EXPORT_SYMBOL(__free_pages);
-
-fastcall void free_pages(unsigned long addr, unsigned int order)
-{
- if (addr != 0) {
- BUG_ON(!virt_addr_valid((void *)addr));
- __free_pages(virt_to_page((void *)addr), order);
- }
-}
-
-EXPORT_SYMBOL(free_pages);
-
-/*
- * Total amount of free (allocatable) RAM:
- */
-unsigned int nr_free_pages(void)
-{
- unsigned int sum = 0;
- struct zone *zone;
-
- for_each_zone(zone)
- sum += zone->free_pages;
-
- return sum;
-}
-
-EXPORT_SYMBOL(nr_free_pages);
-
-#ifdef CONFIG_NUMA
-unsigned int nr_free_pages_pgdat(pg_data_t *pgdat)
-{
- unsigned int i, sum = 0;
-
- for (i = 0; i < MAX_NR_ZONES; i++)
- sum += pgdat->node_zones[i].free_pages;
-
- return sum;
-}
-#endif
-
-static unsigned int nr_free_zone_pages(int offset)
-{
- pg_data_t *pgdat;
- unsigned int sum = 0;
-
- for_each_pgdat(pgdat) {
- struct zonelist *zonelist = pgdat->node_zonelists + offset;
- struct zone **zonep = zonelist->zones;
- struct zone *zone;
-
- for (zone = *zonep++; zone; zone = *zonep++) {
- unsigned long size = zone->present_pages;
- unsigned long high = zone->pages_high;
- if (size > high)
- sum += size - high;
- }
- }
-
- return sum;
-}
-
-/*
- * Amount of free RAM allocatable within ZONE_DMA and ZONE_NORMAL
- */
-unsigned int nr_free_buffer_pages(void)
-{
- return nr_free_zone_pages(GFP_USER & GFP_ZONEMASK);
-}
-
-/*
- * Amount of free RAM allocatable within all zones
- */
-unsigned int nr_free_pagecache_pages(void)
-{
- return nr_free_zone_pages(GFP_HIGHUSER & GFP_ZONEMASK);
-}
-
-#ifdef CONFIG_HIGHMEM
-unsigned int nr_free_highpages (void)
-{
- pg_data_t *pgdat;
- unsigned int pages = 0;
-
- for_each_pgdat(pgdat)
- pages += pgdat->node_zones[ZONE_HIGHMEM].free_pages;
-
- return pages;
-}
-#endif
-
-#ifdef CONFIG_NUMA
-static void show_node(struct zone *zone)
-{
- printk("Node %d ", zone->zone_pgdat->node_id);
-}
-#else
-#define show_node(zone) do { } while (0)
-#endif
-
-/*
- * Accumulate the page_state information across all CPUs.
- * The result is unavoidably approximate - it can change
- * during and after execution of this function.
- */
-static DEFINE_PER_CPU(struct page_state, page_states) = {0};
-
-atomic_t nr_pagecache = ATOMIC_INIT(0);
-EXPORT_SYMBOL(nr_pagecache);
-#ifdef CONFIG_SMP
-DEFINE_PER_CPU(long, nr_pagecache_local) = 0;
-#endif
-
-void __get_page_state(struct page_state *ret, int nr)
-{
- int cpu = 0;
-
- memset(ret, 0, sizeof(*ret));
-
- cpu = first_cpu(cpu_online_map);
- while (cpu < NR_CPUS) {
- unsigned long *in, *out, off;
-
- in = (unsigned long *)&per_cpu(page_states, cpu);
-
- cpu = next_cpu(cpu, cpu_online_map);
-
- if (cpu < NR_CPUS)
- prefetch(&per_cpu(page_states, cpu));
-
- out = (unsigned long *)ret;
- for (off = 0; off < nr; off++)
- *out++ += *in++;
- }
-}
-
-void get_page_state(struct page_state *ret)
-{
- int nr;
-
- nr = offsetof(struct page_state, GET_PAGE_STATE_LAST);
- nr /= sizeof(unsigned long);
-
- __get_page_state(ret, nr + 1);
-}
-
-void get_full_page_state(struct page_state *ret)
-{
- __get_page_state(ret, sizeof(*ret) / sizeof(unsigned long));
-}
-
-unsigned long __read_page_state(unsigned offset)
-{
- unsigned long ret = 0;
- int cpu;
-
- for_each_online_cpu(cpu) {
- unsigned long in;
-
- in = (unsigned long)&per_cpu(page_states, cpu) + offset;
- ret += *((unsigned long *)in);
- }
- return ret;
-}
-
-void __mod_page_state(unsigned offset, unsigned long delta)
-{
- unsigned long flags;
- void* ptr;
-
- local_irq_save(flags);
- ptr = &__get_cpu_var(page_states);
- *(unsigned long*)(ptr + offset) += delta;
- local_irq_restore(flags);
-}
-
-EXPORT_SYMBOL(__mod_page_state);
-
-void __get_zone_counts(unsigned long *active, unsigned long *inactive,
- unsigned long *free, struct pglist_data *pgdat)
-{
- struct zone *zones = pgdat->node_zones;
- int i;
-
- *active = 0;
- *inactive = 0;
- *free = 0;
- for (i = 0; i < MAX_NR_ZONES; i++) {
- *active += zones[i].nr_active;
- *inactive += zones[i].nr_inactive;
- *free += zones[i].free_pages;
- }
-}
-
-void get_zone_counts(unsigned long *active,
- unsigned long *inactive, unsigned long *free)
-{
- struct pglist_data *pgdat;
-
- *active = 0;
- *inactive = 0;
- *free = 0;
- for_each_pgdat(pgdat) {
- unsigned long l, m, n;
- __get_zone_counts(&l, &m, &n, pgdat);
- *active += l;
- *inactive += m;
- *free += n;
- }
-}
-
-void si_meminfo(struct sysinfo *val)
-{
- val->totalram = totalram_pages;
- val->sharedram = 0;
- val->freeram = nr_free_pages();
- val->bufferram = nr_blockdev_pages();
-#ifdef CONFIG_HIGHMEM
- val->totalhigh = totalhigh_pages;
- val->freehigh = nr_free_highpages();
-#else
- val->totalhigh = 0;
- val->freehigh = 0;
-#endif
- val->mem_unit = PAGE_SIZE;
-}
-
-EXPORT_SYMBOL(si_meminfo);
-
-#ifdef CONFIG_NUMA
-void si_meminfo_node(struct sysinfo *val, int nid)
-{
- pg_data_t *pgdat = NODE_DATA(nid);
-
- val->totalram = pgdat->node_present_pages;
- val->freeram = nr_free_pages_pgdat(pgdat);
- val->totalhigh = pgdat->node_zones[ZONE_HIGHMEM].present_pages;
- val->freehigh = pgdat->node_zones[ZONE_HIGHMEM].free_pages;
- val->mem_unit = PAGE_SIZE;
-}
-#endif
-
-#define K(x) ((x) << (PAGE_SHIFT-10))
-
-/*
- * Show free area list (used inside shift_scroll-lock stuff)
- * We also calculate the percentage fragmentation. We do this by counting the
- * memory on each free list with the exception of the first item on the list.
- */
-void show_free_areas(void)
-{
- struct page_state ps;
- int cpu, temperature;
- unsigned long active;
- unsigned long inactive;
- unsigned long free;
- struct zone *zone;
-
- for_each_zone(zone) {
- show_node(zone);
- printk("%s per-cpu:", zone->name);
-
- if (!zone->present_pages) {
- printk(" empty\n");
- continue;
- } else
- printk("\n");
-
- for (cpu = 0; cpu < NR_CPUS; ++cpu) {
- struct per_cpu_pageset *pageset;
-
- if (!cpu_possible(cpu))
- continue;
-
- pageset = zone->pageset + cpu;
-
- for (temperature = 0; temperature < 2; temperature++)
- printk("cpu %d %s: low %d, high %d, batch %d\n",
- cpu,
- temperature ? "cold" : "hot",
- pageset->pcp[temperature].low,
- pageset->pcp[temperature].high,
- pageset->pcp[temperature].batch);
- }
- }
-
- get_page_state(&ps);
- get_zone_counts(&active, &inactive, &free);
-
- printk("\nFree pages: %11ukB (%ukB HighMem)\n",
- K(nr_free_pages()),
- K(nr_free_highpages()));
-
- printk("Active:%lu inactive:%lu dirty:%lu writeback:%lu "
- "unstable:%lu free:%u slab:%lu mapped:%lu pagetables:%lu\n",
- active,
- inactive,
- ps.nr_dirty,
- ps.nr_writeback,
- ps.nr_unstable,
- nr_free_pages(),
- ps.nr_slab,
- ps.nr_mapped,
- ps.nr_page_table_pages);
-
- for_each_zone(zone) {
- int i;
-
- show_node(zone);
- printk("%s"
- " free:%lukB"
- " min:%lukB"
- " low:%lukB"
- " high:%lukB"
- " active:%lukB"
- " inactive:%lukB"
- " present:%lukB"
- " pages_scanned:%lu"
- " all_unreclaimable? %s"
- "\n",
- zone->name,
- K(zone->free_pages),
- K(zone->pages_min),
- K(zone->pages_low),
- K(zone->pages_high),
- K(zone->nr_active),
- K(zone->nr_inactive),
- K(zone->present_pages),
- zone->pages_scanned,
- (zone->all_unreclaimable ? "yes" : "no")
- );
- printk("lowmem_reserve[]:");
- for (i = 0; i < MAX_NR_ZONES; i++)
- printk(" %lu", zone->lowmem_reserve[i]);
- printk("\n");
- }
-
- for_each_zone(zone) {
- unsigned long nr, flags, order, total = 0;
-
- show_node(zone);
- printk("%s: ", zone->name);
- if (!zone->present_pages) {
- printk("empty\n");
- continue;
- }
-
- spin_lock_irqsave(&zone->lock, flags);
- for (order = 0; order < MAX_ORDER; order++) {
- nr = zone->free_area[order].nr_free;
- total += nr << order;
- printk("%lu*%lukB ", nr, K(1UL) << order);
- }
- spin_unlock_irqrestore(&zone->lock, flags);
- printk("= %lukB\n", K(total));
- }
-
- show_swap_cache_info();
-}
-
-/*
- * Builds allocation fallback zone lists.
- */
-static int __init build_zonelists_node(pg_data_t *pgdat, struct zonelist
*zonelist, int j, int k)
-{
- switch (k) {
- struct zone *zone;
- default:
- BUG();
- case ZONE_HIGHMEM:
- zone = pgdat->node_zones + ZONE_HIGHMEM;
- if (zone->present_pages) {
-#ifndef CONFIG_HIGHMEM
- BUG();
-#endif
- zonelist->zones[j++] = zone;
- }
- case ZONE_NORMAL:
- zone = pgdat->node_zones + ZONE_NORMAL;
- if (zone->present_pages)
- zonelist->zones[j++] = zone;
- case ZONE_DMA:
- zone = pgdat->node_zones + ZONE_DMA;
- if (zone->present_pages)
- zonelist->zones[j++] = zone;
- }
-
- return j;
-}
-
-#ifdef CONFIG_NUMA
-#define MAX_NODE_LOAD (num_online_nodes())
-static int __initdata node_load[MAX_NUMNODES];
-/**
- * find_next_best_node - find the next node that should appear in a given
- * node's fallback list
- * @node: node whose fallback list we're appending
- * @used_node_mask: nodemask_t of already used nodes
- *
- * We use a number of factors to determine which is the next node that should
- * appear on a given node's fallback list. The node should not have appeared
- * already in @node's fallback list, and it should be the next closest node
- * according to the distance array (which contains arbitrary distance values
- * from each node to each node in the system), and should also prefer nodes
- * with no CPUs, since presumably they'll have very little allocation pressure
- * on them otherwise.
- * It returns -1 if no node is found.
- */
-static int __init find_next_best_node(int node, nodemask_t *used_node_mask)
-{
- int i, n, val;
- int min_val = INT_MAX;
- int best_node = -1;
-
- for_each_online_node(i) {
- cpumask_t tmp;
-
- /* Start from local node */
- n = (node+i) % num_online_nodes();
-
- /* Don't want a node to appear more than once */
- if (node_isset(n, *used_node_mask))
- continue;
-
- /* Use the local node if we haven't already */
- if (!node_isset(node, *used_node_mask)) {
- best_node = node;
- break;
- }
-
- /* Use the distance array to find the distance */
- val = node_distance(node, n);
-
- /* Give preference to headless and unused nodes */
- tmp = node_to_cpumask(n);
- if (!cpus_empty(tmp))
- val += PENALTY_FOR_NODE_WITH_CPUS;
-
- /* Slight preference for less loaded node */
- val *= (MAX_NODE_LOAD*MAX_NUMNODES);
- val += node_load[n];
-
- if (val < min_val) {
- min_val = val;
- best_node = n;
- }
- }
-
- if (best_node >= 0)
- node_set(best_node, *used_node_mask);
-
- return best_node;
-}
-
-static void __init build_zonelists(pg_data_t *pgdat)
-{
- int i, j, k, node, local_node;
- int prev_node, load;
- struct zonelist *zonelist;
- nodemask_t used_mask;
-
- /* initialize zonelists */
- for (i = 0; i < GFP_ZONETYPES; i++) {
- zonelist = pgdat->node_zonelists + i;
- memset(zonelist, 0, sizeof(*zonelist));
- zonelist->zones[0] = NULL;
- }
-
- /* NUMA-aware ordering of nodes */
- local_node = pgdat->node_id;
- load = num_online_nodes();
- prev_node = local_node;
- nodes_clear(used_mask);
- while ((node = find_next_best_node(local_node, &used_mask)) >= 0) {
- /*
- * We don't want to pressure a particular node.
- * So adding penalty to the first node in same
- * distance group to make it round-robin.
- */
- if (node_distance(local_node, node) !=
- node_distance(local_node, prev_node))
- node_load[node] += load;
- prev_node = node;
- load--;
- for (i = 0; i < GFP_ZONETYPES; i++) {
- zonelist = pgdat->node_zonelists + i;
- for (j = 0; zonelist->zones[j] != NULL; j++);
-
- k = ZONE_NORMAL;
- if (i & __GFP_HIGHMEM)
- k = ZONE_HIGHMEM;
- if (i & __GFP_DMA)
- k = ZONE_DMA;
-
- j = build_zonelists_node(NODE_DATA(node), zonelist, j,
k);
- zonelist->zones[j] = NULL;
- }
- }
-}
-
-#else /* CONFIG_NUMA */
-
-static void __init build_zonelists(pg_data_t *pgdat)
-{
- int i, j, k, node, local_node;
-
- local_node = pgdat->node_id;
- for (i = 0; i < GFP_ZONETYPES; i++) {
- struct zonelist *zonelist;
-
- zonelist = pgdat->node_zonelists + i;
- memset(zonelist, 0, sizeof(*zonelist));
-
- j = 0;
- k = ZONE_NORMAL;
- if (i & __GFP_HIGHMEM)
- k = ZONE_HIGHMEM;
- if (i & __GFP_DMA)
- k = ZONE_DMA;
-
- j = build_zonelists_node(pgdat, zonelist, j, k);
- /*
- * Now we build the zonelist so that it contains the zones
- * of all the other nodes.
- * We don't want to pressure a particular node, so when
- * building the zones for node N, we make sure that the
- * zones coming right after the local ones are those from
- * node N+1 (modulo N)
- */
- for (node = local_node + 1; node < MAX_NUMNODES; node++) {
- if (!node_online(node))
- continue;
- j = build_zonelists_node(NODE_DATA(node), zonelist, j,
k);
- }
- for (node = 0; node < local_node; node++) {
- if (!node_online(node))
- continue;
- j = build_zonelists_node(NODE_DATA(node), zonelist, j,
k);
- }
-
- zonelist->zones[j] = NULL;
- }
-}
-
-#endif /* CONFIG_NUMA */
-
-void __init build_all_zonelists(void)
-{
- int i;
-
- for_each_online_node(i)
- build_zonelists(NODE_DATA(i));
- printk("Built %i zonelists\n", num_online_nodes());
-}
-
-/*
- * Helper functions to size the waitqueue hash table.
- * Essentially these want to choose hash table sizes sufficiently
- * large so that collisions trying to wait on pages are rare.
- * But in fact, the number of active page waitqueues on typical
- * systems is ridiculously low, less than 200. So this is even
- * conservative, even though it seems large.
- *
- * The constant PAGES_PER_WAITQUEUE specifies the ratio of pages to
- * waitqueues, i.e. the size of the waitq table given the number of pages.
- */
-#define PAGES_PER_WAITQUEUE 256
-
-static inline unsigned long wait_table_size(unsigned long pages)
-{
- unsigned long size = 1;
-
- pages /= PAGES_PER_WAITQUEUE;
-
- while (size < pages)
- size <<= 1;
-
- /*
- * Once we have dozens or even hundreds of threads sleeping
- * on IO we've got bigger problems than wait queue collision.
- * Limit the size of the wait table to a reasonable size.
- */
- size = min(size, 4096UL);
-
- return max(size, 4UL);
-}
-
-/*
- * This is an integer logarithm so that shifts can be used later
- * to extract the more random high bits from the multiplicative
- * hash function before the remainder is taken.
- */
-static inline unsigned long wait_table_bits(unsigned long size)
-{
- return ffz(~size);
-}
-
-#define LONG_ALIGN(x) (((x)+(sizeof(long))-1)&~((sizeof(long))-1))
-
-static void __init calculate_zone_totalpages(struct pglist_data *pgdat,
- unsigned long *zones_size, unsigned long *zholes_size)
-{
- unsigned long realtotalpages, totalpages = 0;
- int i;
-
- for (i = 0; i < MAX_NR_ZONES; i++)
- totalpages += zones_size[i];
- pgdat->node_spanned_pages = totalpages;
-
- realtotalpages = totalpages;
- if (zholes_size)
- for (i = 0; i < MAX_NR_ZONES; i++)
- realtotalpages -= zholes_size[i];
- pgdat->node_present_pages = realtotalpages;
- printk(KERN_DEBUG "On node %d totalpages: %lu\n", pgdat->node_id,
realtotalpages);
-}
-
-
-/*
- * Initially all pages are reserved - free ones are freed
- * up by free_all_bootmem() once the early boot process is
- * done. Non-atomic initialization, single-pass.
- */
-void __init memmap_init_zone(unsigned long size, int nid, unsigned long zone,
- unsigned long start_pfn)
-{
- struct page *start = pfn_to_page(start_pfn);
- struct page *page;
-
- for (page = start; page < (start + size); page++) {
- set_page_zone(page, NODEZONE(nid, zone));
- set_page_count(page, 0);
- reset_page_mapcount(page);
- SetPageReserved(page);
- INIT_LIST_HEAD(&page->lru);
-#ifdef WANT_PAGE_VIRTUAL
- /* The shift won't overflow because ZONE_NORMAL is below 4G. */
- if (!is_highmem_idx(zone))
- set_page_address(page, __va(start_pfn << PAGE_SHIFT));
-#endif
- start_pfn++;
- }
-}
-
-void zone_init_free_lists(struct pglist_data *pgdat, struct zone *zone,
- unsigned long size)
-{
- int order;
- for (order = 0; order < MAX_ORDER ; order++) {
- INIT_LIST_HEAD(&zone->free_area[order].free_list);
- zone->free_area[order].nr_free = 0;
- }
-}
-
-#ifndef __HAVE_ARCH_MEMMAP_INIT
-#define memmap_init(size, nid, zone, start_pfn) \
- memmap_init_zone((size), (nid), (zone), (start_pfn))
-#endif
-
-/*
- * Set up the zone data structures:
- * - mark all pages reserved
- * - mark all memory queues empty
- * - clear the memory bitmaps
- */
-static void __init free_area_init_core(struct pglist_data *pgdat,
- unsigned long *zones_size, unsigned long *zholes_size)
-{
- unsigned long i, j;
- const unsigned long zone_required_alignment = 1UL << (MAX_ORDER-1);
- int cpu, nid = pgdat->node_id;
- unsigned long zone_start_pfn = pgdat->node_start_pfn;
-
- pgdat->nr_zones = 0;
- init_waitqueue_head(&pgdat->kswapd_wait);
- pgdat->kswapd_max_order = 0;
-
- for (j = 0; j < MAX_NR_ZONES; j++) {
- struct zone *zone = pgdat->node_zones + j;
- unsigned long size, realsize;
- unsigned long batch;
-
- zone_table[NODEZONE(nid, j)] = zone;
- realsize = size = zones_size[j];
- if (zholes_size)
- realsize -= zholes_size[j];
-
- if (j == ZONE_DMA || j == ZONE_NORMAL)
- nr_kernel_pages += realsize;
- nr_all_pages += realsize;
-
- zone->spanned_pages = size;
- zone->present_pages = realsize;
- zone->name = zone_names[j];
- spin_lock_init(&zone->lock);
- spin_lock_init(&zone->lru_lock);
- zone->zone_pgdat = pgdat;
- zone->free_pages = 0;
-
- zone->temp_priority = zone->prev_priority = DEF_PRIORITY;
-
- /*
- * The per-cpu-pages pools are set to around 1000th of the
- * size of the zone. But no more than 1/4 of a meg - there's
- * no point in going beyond the size of L2 cache.
- *
- * OK, so we don't know how big the cache is. So guess.
- */
- batch = zone->present_pages / 1024;
- if (batch * PAGE_SIZE > 256 * 1024)
- batch = (256 * 1024) / PAGE_SIZE;
- batch /= 4; /* We effectively *= 4 below */
- if (batch < 1)
- batch = 1;
-
- for (cpu = 0; cpu < NR_CPUS; cpu++) {
- struct per_cpu_pages *pcp;
-
- pcp = &zone->pageset[cpu].pcp[0]; /* hot */
- pcp->count = 0;
- pcp->low = 2 * batch;
- pcp->high = 6 * batch;
- pcp->batch = 1 * batch;
- INIT_LIST_HEAD(&pcp->list);
-
- pcp = &zone->pageset[cpu].pcp[1]; /* cold */
- pcp->count = 0;
- pcp->low = 0;
- pcp->high = 2 * batch;
- pcp->batch = 1 * batch;
- INIT_LIST_HEAD(&pcp->list);
- }
- printk(KERN_DEBUG " %s zone: %lu pages, LIFO batch:%lu\n",
- zone_names[j], realsize, batch);
- INIT_LIST_HEAD(&zone->active_list);
- INIT_LIST_HEAD(&zone->inactive_list);
- zone->nr_scan_active = 0;
- zone->nr_scan_inactive = 0;
- zone->nr_active = 0;
- zone->nr_inactive = 0;
- if (!size)
- continue;
-
- /*
- * The per-page waitqueue mechanism uses hashed waitqueues
- * per zone.
- */
- zone->wait_table_size = wait_table_size(size);
- zone->wait_table_bits =
- wait_table_bits(zone->wait_table_size);
- zone->wait_table = (wait_queue_head_t *)
- alloc_bootmem_node(pgdat, zone->wait_table_size
- * sizeof(wait_queue_head_t));
-
- for(i = 0; i < zone->wait_table_size; ++i)
- init_waitqueue_head(zone->wait_table + i);
-
- pgdat->nr_zones = j+1;
-
- zone->zone_mem_map = pfn_to_page(zone_start_pfn);
- zone->zone_start_pfn = zone_start_pfn;
-
- if ((zone_start_pfn) & (zone_required_alignment-1))
- printk(KERN_CRIT "BUG: wrong zone alignment, it will
crash\n");
-
- memmap_init(size, nid, j, zone_start_pfn);
-
- zone_start_pfn += size;
-
- zone_init_free_lists(pgdat, zone, zone->spanned_pages);
- }
-}
-
-void __init node_alloc_mem_map(struct pglist_data *pgdat)
-{
- unsigned long size;
-
- size = (pgdat->node_spanned_pages + 1) * sizeof(struct page);
- pgdat->node_mem_map = alloc_bootmem_node(pgdat, size);
-#ifndef CONFIG_DISCONTIGMEM
- mem_map = contig_page_data.node_mem_map;
-#endif
-}
-
-void __init free_area_init_node(int nid, struct pglist_data *pgdat,
- unsigned long *zones_size, unsigned long node_start_pfn,
- unsigned long *zholes_size)
-{
- pgdat->node_id = nid;
- pgdat->node_start_pfn = node_start_pfn;
- calculate_zone_totalpages(pgdat, zones_size, zholes_size);
-
- if (!pfn_to_page(node_start_pfn))
- node_alloc_mem_map(pgdat);
-
- free_area_init_core(pgdat, zones_size, zholes_size);
-}
-
-#ifndef CONFIG_DISCONTIGMEM
-static bootmem_data_t contig_bootmem_data;
-struct pglist_data contig_page_data = { .bdata = &contig_bootmem_data };
-
-EXPORT_SYMBOL(contig_page_data);
-
-void __init free_area_init(unsigned long *zones_size)
-{
- free_area_init_node(0, &contig_page_data, zones_size,
- __pa(PAGE_OFFSET) >> PAGE_SHIFT, NULL);
-}
-#endif
-
-#ifdef CONFIG_PROC_FS
-
-#include <linux/seq_file.h>
-
-static void *frag_start(struct seq_file *m, loff_t *pos)
-{
- pg_data_t *pgdat;
- loff_t node = *pos;
-
- for (pgdat = pgdat_list; pgdat && node; pgdat = pgdat->pgdat_next)
- --node;
-
- return pgdat;
-}
-
-static void *frag_next(struct seq_file *m, void *arg, loff_t *pos)
-{
- pg_data_t *pgdat = (pg_data_t *)arg;
-
- (*pos)++;
- return pgdat->pgdat_next;
-}
-
-static void frag_stop(struct seq_file *m, void *arg)
-{
-}
-
-/*
- * This walks the free areas for each zone.
- */
-static int frag_show(struct seq_file *m, void *arg)
-{
- pg_data_t *pgdat = (pg_data_t *)arg;
- struct zone *zone;
- struct zone *node_zones = pgdat->node_zones;
- unsigned long flags;
- int order;
-
- for (zone = node_zones; zone - node_zones < MAX_NR_ZONES; ++zone) {
- if (!zone->present_pages)
- continue;
-
- spin_lock_irqsave(&zone->lock, flags);
- seq_printf(m, "Node %d, zone %8s ", pgdat->node_id, zone->name);
- for (order = 0; order < MAX_ORDER; ++order)
- seq_printf(m, "%6lu ", zone->free_area[order].nr_free);
- spin_unlock_irqrestore(&zone->lock, flags);
- seq_putc(m, '\n');
- }
- return 0;
-}
-
-struct seq_operations fragmentation_op = {
- .start = frag_start,
- .next = frag_next,
- .stop = frag_stop,
- .show = frag_show,
-};
-
-static char *vmstat_text[] = {
- "nr_dirty",
- "nr_writeback",
- "nr_unstable",
- "nr_page_table_pages",
- "nr_mapped",
- "nr_slab",
-
- "pgpgin",
- "pgpgout",
- "pswpin",
- "pswpout",
- "pgalloc_high",
-
- "pgalloc_normal",
- "pgalloc_dma",
- "pgfree",
- "pgactivate",
- "pgdeactivate",
-
- "pgfault",
- "pgmajfault",
- "pgrefill_high",
- "pgrefill_normal",
- "pgrefill_dma",
-
- "pgsteal_high",
- "pgsteal_normal",
- "pgsteal_dma",
- "pgscan_kswapd_high",
- "pgscan_kswapd_normal",
-
- "pgscan_kswapd_dma",
- "pgscan_direct_high",
- "pgscan_direct_normal",
- "pgscan_direct_dma",
- "pginodesteal",
-
- "slabs_scanned",
- "kswapd_steal",
- "kswapd_inodesteal",
- "pageoutrun",
- "allocstall",
-
- "pgrotated",
-};
-
-static void *vmstat_start(struct seq_file *m, loff_t *pos)
-{
- struct page_state *ps;
-
- if (*pos >= ARRAY_SIZE(vmstat_text))
- return NULL;
-
- ps = kmalloc(sizeof(*ps), GFP_KERNEL);
- m->private = ps;
- if (!ps)
- return ERR_PTR(-ENOMEM);
- get_full_page_state(ps);
- ps->pgpgin /= 2; /* sectors -> kbytes */
- ps->pgpgout /= 2;
- return (unsigned long *)ps + *pos;
-}
-
-static void *vmstat_next(struct seq_file *m, void *arg, loff_t *pos)
-{
- (*pos)++;
- if (*pos >= ARRAY_SIZE(vmstat_text))
- return NULL;
- return (unsigned long *)m->private + *pos;
-}
-
-static int vmstat_show(struct seq_file *m, void *arg)
-{
- unsigned long *l = arg;
- unsigned long off = l - (unsigned long *)m->private;
-
- seq_printf(m, "%s %lu\n", vmstat_text[off], *l);
- return 0;
-}
-
-static void vmstat_stop(struct seq_file *m, void *arg)
-{
- kfree(m->private);
- m->private = NULL;
-}
-
-struct seq_operations vmstat_op = {
- .start = vmstat_start,
- .next = vmstat_next,
- .stop = vmstat_stop,
- .show = vmstat_show,
-};
-
-#endif /* CONFIG_PROC_FS */
-
-#ifdef CONFIG_HOTPLUG_CPU
-static int page_alloc_cpu_notify(struct notifier_block *self,
- unsigned long action, void *hcpu)
-{
- int cpu = (unsigned long)hcpu;
- long *count;
- unsigned long *src, *dest;
-
- if (action == CPU_DEAD) {
- int i;
-
- /* Drain local pagecache count. */
- count = &per_cpu(nr_pagecache_local, cpu);
- atomic_add(*count, &nr_pagecache);
- *count = 0;
- local_irq_disable();
- __drain_pages(cpu);
-
- /* Add dead cpu's page_states to our own. */
- dest = (unsigned long *)&__get_cpu_var(page_states);
- src = (unsigned long *)&per_cpu(page_states, cpu);
-
- for (i = 0; i < sizeof(struct page_state)/sizeof(unsigned long);
- i++) {
- dest[i] += src[i];
- src[i] = 0;
- }
-
- local_irq_enable();
- }
- return NOTIFY_OK;
-}
-#endif /* CONFIG_HOTPLUG_CPU */
-
-void __init page_alloc_init(void)
-{
- hotcpu_notifier(page_alloc_cpu_notify, 0);
-}
-
-/*
- * setup_per_zone_lowmem_reserve - called whenever
- * sysctl_lower_zone_reserve_ratio changes. Ensures that each zone
- * has a correct pages reserved value, so an adequate number of
- * pages are left in the zone after a successful __alloc_pages().
- */
-static void setup_per_zone_lowmem_reserve(void)
-{
- struct pglist_data *pgdat;
- int j, idx;
-
- for_each_pgdat(pgdat) {
- for (j = 0; j < MAX_NR_ZONES; j++) {
- struct zone * zone = pgdat->node_zones + j;
- unsigned long present_pages = zone->present_pages;
-
- zone->lowmem_reserve[j] = 0;
-
- for (idx = j-1; idx >= 0; idx--) {
- struct zone * lower_zone = pgdat->node_zones +
idx;
-
- lower_zone->lowmem_reserve[j] = present_pages /
sysctl_lowmem_reserve_ratio[idx];
- present_pages += lower_zone->present_pages;
- }
- }
- }
-}
-
-/*
- * setup_per_zone_pages_min - called when min_free_kbytes changes. Ensures
- * that the pages_{min,low,high} values for each zone are set correctly
- * with respect to min_free_kbytes.
- */
-static void setup_per_zone_pages_min(void)
-{
- unsigned long pages_min = min_free_kbytes >> (PAGE_SHIFT - 10);
- unsigned long lowmem_pages = 0;
- struct zone *zone;
- unsigned long flags;
-
- /* Calculate total number of !ZONE_HIGHMEM pages */
- for_each_zone(zone) {
- if (!is_highmem(zone))
- lowmem_pages += zone->present_pages;
- }
-
- for_each_zone(zone) {
- spin_lock_irqsave(&zone->lru_lock, flags);
- if (is_highmem(zone)) {
- /*
- * Often, highmem doesn't need to reserve any pages.
- * But the pages_min/low/high values are also used for
- * batching up page reclaim activity so we need a
- * decent value here.
- */
- int min_pages;
-
- min_pages = zone->present_pages / 1024;
- if (min_pages < SWAP_CLUSTER_MAX)
- min_pages = SWAP_CLUSTER_MAX;
- if (min_pages > 128)
- min_pages = 128;
- zone->pages_min = min_pages;
- } else {
- /* if it's a lowmem zone, reserve a number of pages
- * proportionate to the zone's size.
- */
- zone->pages_min = (pages_min * zone->present_pages) /
- lowmem_pages;
- }
-
- /*
- * When interpreting these watermarks, just keep in mind that:
- * zone->pages_min == (zone->pages_min * 4) / 4;
- */
- zone->pages_low = (zone->pages_min * 5) / 4;
- zone->pages_high = (zone->pages_min * 6) / 4;
- spin_unlock_irqrestore(&zone->lru_lock, flags);
- }
-}
-
-/*
- * Initialise min_free_kbytes.
- *
- * For small machines we want it small (128k min). For large machines
- * we want it large (64MB max). But it is not linear, because network
- * bandwidth does not increase linearly with machine size. We use
- *
- * min_free_kbytes = 4 * sqrt(lowmem_kbytes), for better accuracy:
- * min_free_kbytes = sqrt(lowmem_kbytes * 16)
- *
- * which yields
- *
- * 16MB: 512k
- * 32MB: 724k
- * 64MB: 1024k
- * 128MB: 1448k
- * 256MB: 2048k
- * 512MB: 2896k
- * 1024MB: 4096k
- * 2048MB: 5792k
- * 4096MB: 8192k
- * 8192MB: 11584k
- * 16384MB: 16384k
- */
-static int __init init_per_zone_pages_min(void)
-{
- unsigned long lowmem_kbytes;
-
- lowmem_kbytes = nr_free_buffer_pages() * (PAGE_SIZE >> 10);
-
- min_free_kbytes = int_sqrt(lowmem_kbytes * 16);
- if (min_free_kbytes < 128)
- min_free_kbytes = 128;
- if (min_free_kbytes > 65536)
- min_free_kbytes = 65536;
- setup_per_zone_pages_min();
- setup_per_zone_lowmem_reserve();
- return 0;
-}
-module_init(init_per_zone_pages_min)
-
-/*
- * min_free_kbytes_sysctl_handler - just a wrapper around proc_dointvec() so
- * that we can call two helper functions whenever min_free_kbytes
- * changes.
- */
-int min_free_kbytes_sysctl_handler(ctl_table *table, int write,
- struct file *file, void __user *buffer, size_t *length, loff_t
*ppos)
-{
- proc_dointvec(table, write, file, buffer, length, ppos);
- setup_per_zone_pages_min();
- return 0;
-}
-
-/*
- * lowmem_reserve_ratio_sysctl_handler - just a wrapper around
- * proc_dointvec() so that we can call setup_per_zone_lowmem_reserve()
- * whenever sysctl_lowmem_reserve_ratio changes.
- *
- * The reserve ratio obviously has absolutely no relation with the
- * pages_min watermarks. The lowmem reserve ratio can only make sense
- * if in function of the boot time zone sizes.
- */
-int lowmem_reserve_ratio_sysctl_handler(ctl_table *table, int write,
- struct file *file, void __user *buffer, size_t *length, loff_t
*ppos)
-{
- proc_dointvec_minmax(table, write, file, buffer, length, ppos);
- setup_per_zone_lowmem_reserve();
- return 0;
-}
-
-__initdata int hashdist = HASHDIST_DEFAULT;
-
-#ifdef CONFIG_NUMA
-static int __init set_hashdist(char *str)
-{
- if (!str)
- return 0;
- hashdist = simple_strtoul(str, &str, 0);
- return 1;
-}
-__setup("hashdist=", set_hashdist);
-#endif
-
-/*
- * allocate a large system hash table from bootmem
- * - it is assumed that the hash table must contain an exact power-of-2
- * quantity of entries
- * - limit is the number of hash buckets, not the total allocation size
- */
-void *__init alloc_large_system_hash(const char *tablename,
- unsigned long bucketsize,
- unsigned long numentries,
- int scale,
- int flags,
- unsigned int *_hash_shift,
- unsigned int *_hash_mask,
- unsigned long limit)
-{
- unsigned long long max = limit;
- unsigned long log2qty, size;
- void *table = NULL;
-
- /* allow the kernel cmdline to have a say */
- if (!numentries) {
- /* round applicable memory size up to nearest megabyte */
- numentries = (flags & HASH_HIGHMEM) ? nr_all_pages :
nr_kernel_pages;
- numentries += (1UL << (20 - PAGE_SHIFT)) - 1;
- numentries >>= 20 - PAGE_SHIFT;
- numentries <<= 20 - PAGE_SHIFT;
-
- /* limit to 1 bucket per 2^scale bytes of low memory */
- if (scale > PAGE_SHIFT)
- numentries >>= (scale - PAGE_SHIFT);
- else
- numentries <<= (PAGE_SHIFT - scale);
- }
- /* rounded up to nearest power of 2 in size */
- numentries = 1UL << (long_log2(numentries) + 1);
-
- /* limit allocation size to 1/16 total memory by default */
- if (max == 0) {
- max = ((unsigned long long)nr_all_pages << PAGE_SHIFT) >> 4;
- do_div(max, bucketsize);
- }
-
- if (numentries > max)
- numentries = max;
-
- log2qty = long_log2(numentries);
-
- do {
- size = bucketsize << log2qty;
- if (flags & HASH_EARLY)
- table = alloc_bootmem(size);
- else if (hashdist)
- table = __vmalloc(size, GFP_ATOMIC, PAGE_KERNEL);
- else {
- unsigned long order;
- for (order = 0; ((1UL << order) << PAGE_SHIFT) < size;
order++)
- ;
- table = (void*) __get_free_pages(GFP_ATOMIC, order);
- }
- } while (!table && size > PAGE_SIZE && --log2qty);
-
- if (!table)
- panic("Failed to allocate %s hash table\n", tablename);
-
- printk("%s hash table entries: %d (order: %d, %lu bytes)\n",
- tablename,
- (1U << log2qty),
- long_log2(size) - PAGE_SHIFT,
- size);
-
- if (_hash_shift)
- *_hash_shift = log2qty;
- if (_hash_mask)
- *_hash_mask = (1 << log2qty) - 1;
-
- return table;
-}
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.6.11-xen-sparse/net/core/dev.c
--- a/linux-2.6.11-xen-sparse/net/core/dev.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,3389 +0,0 @@
-/*
- * NET3 Protocol independent device support routines.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * Derived from the non IP parts of dev.c 1.0.19
- * Authors: Ross Biro, <bir7@xxxxxxxxxxxxxxxxxxx>
- * Fred N. van Kempen, <waltje@xxxxxxxxxxxxxxxxxxx>
- * Mark Evans, <evansmp@xxxxxxxxxxxxxxxxx>
- *
- * Additional Authors:
- * Florian la Roche <rzsfl@xxxxxxxxxxxx>
- * Alan Cox <gw4pts@xxxxxxxxxxxxxxx>
- * David Hinds <dahinds@xxxxxxxxxxxxxxxxxxxxx>
- * Alexey Kuznetsov <kuznet@xxxxxxxxxxxxx>
- * Adam Sulmicki <adam@xxxxxxxxxxxx>
- * Pekka Riikonen <priikone@xxxxxxxxxxxxxxxx>
- *
- * Changes:
- * D.J. Barrow : Fixed bug where dev->refcnt gets set
- * to 2 if register_netdev gets called
- * before net_dev_init & also removed a
- * few lines of code in the process.
- * Alan Cox : device private ioctl copies fields back.
- * Alan Cox : Transmit queue code does relevant
- * stunts to keep the queue safe.
- * Alan Cox : Fixed double lock.
- * Alan Cox : Fixed promisc NULL pointer trap
- * ???????? : Support the full private ioctl range
- * Alan Cox : Moved ioctl permission check into
- * drivers
- * Tim Kordas : SIOCADDMULTI/SIOCDELMULTI
- * Alan Cox : 100 backlog just doesn't cut it when
- * you start doing multicast video 8)
- * Alan Cox : Rewrote net_bh and list manager.
- * Alan Cox : Fix ETH_P_ALL echoback lengths.
- * Alan Cox : Took out transmit every packet pass
- * Saved a few bytes in the ioctl handler
- * Alan Cox : Network driver sets packet type before
- * calling netif_rx. Saves a function
- * call a packet.
- * Alan Cox : Hashed net_bh()
- * Richard Kooijman: Timestamp fixes.
- * Alan Cox : Wrong field in SIOCGIFDSTADDR
- * Alan Cox : Device lock protection.
- * Alan Cox : Fixed nasty side effect of device close
- * changes.
- * Rudi Cilibrasi : Pass the right thing to
- * set_mac_address()
- * Dave Miller : 32bit quantity for the device lock to
- * make it work out on a Sparc.
- * Bjorn Ekwall : Added KERNELD hack.
- * Alan Cox : Cleaned up the backlog initialise.
- * Craig Metz : SIOCGIFCONF fix if space for under
- * 1 device.
- * Thomas Bogendoerfer : Return ENODEV for dev_open, if there
- * is no device open function.
- * Andi Kleen : Fix error reporting for SIOCGIFCONF
- * Michael Chastain : Fix signed/unsigned for SIOCGIFCONF
- * Cyrus Durgin : Cleaned for KMOD
- * Adam Sulmicki : Bug Fix : Network Device Unload
- * A network device unload needs to purge
- * the backlog queue.
- * Paul Rusty Russell : SIOCSIFNAME
- * Pekka Riikonen : Netdev boot-time settings code
- * Andrew Morton : Make unregister_netdevice wait
- * indefinitely on dev->refcnt
- * J Hadi Salim : - Backlog queue sampling
- * - netif_rx() feedback
- */
-
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#include <linux/bitops.h>
-#include <linux/config.h>
-#include <linux/cpu.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/socket.h>
-#include <linux/sockios.h>
-#include <linux/errno.h>
-#include <linux/interrupt.h>
-#include <linux/if_ether.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/notifier.h>
-#include <linux/skbuff.h>
-#include <net/sock.h>
-#include <linux/rtnetlink.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <linux/stat.h>
-#include <linux/if_bridge.h>
-#include <linux/divert.h>
-#include <net/dst.h>
-#include <net/pkt_sched.h>
-#include <net/checksum.h>
-#include <linux/highmem.h>
-#include <linux/init.h>
-#include <linux/kmod.h>
-#include <linux/module.h>
-#include <linux/kallsyms.h>
-#include <linux/netpoll.h>
-#include <linux/rcupdate.h>
-#include <linux/delay.h>
-#ifdef CONFIG_NET_RADIO
-#include <linux/wireless.h> /* Note : will define WIRELESS_EXT */
-#include <net/iw_handler.h>
-#endif /* CONFIG_NET_RADIO */
-#include <asm/current.h>
-
-#include <net/ip.h>
-#include <linux/tcp.h>
-#include <linux/udp.h>
-
-
-/* This define, if set, will randomly drop a packet when congestion
- * is more than moderate. It helps fairness in the multi-interface
- * case when one of them is a hog, but it kills performance for the
- * single interface case so it is off now by default.
- */
-#undef RAND_LIE
-
-/* Setting this will sample the queue lengths and thus congestion
- * via a timer instead of as each packet is received.
- */
-#undef OFFLINE_SAMPLE
-
-/*
- * The list of packet types we will receive (as opposed to discard)
- * and the routines to invoke.
- *
- * Why 16. Because with 16 the only overlap we get on a hash of the
- * low nibble of the protocol value is RARP/SNAP/X.25.
- *
- * NOTE: That is no longer true with the addition of VLAN tags. Not
- * sure which should go first, but I bet it won't make much
- * difference if we are running VLANs. The good news is that
- * this protocol won't be in the list unless compiled in, so
- * the average user (w/out VLANs) will not be adversly affected.
- * --BLG
- *
- * 0800 IP
- * 8100 802.1Q VLAN
- * 0001 802.3
- * 0002 AX.25
- * 0004 802.2
- * 8035 RARP
- * 0005 SNAP
- * 0805 X.25
- * 0806 ARP
- * 8137 IPX
- * 0009 Localtalk
- * 86DD IPv6
- */
-
-static DEFINE_SPINLOCK(ptype_lock);
-static struct list_head ptype_base[16]; /* 16 way hashed list */
-static struct list_head ptype_all; /* Taps */
-
-#ifdef OFFLINE_SAMPLE
-static void sample_queue(unsigned long dummy);
-static struct timer_list samp_timer = TIMER_INITIALIZER(sample_queue, 0, 0);
-#endif
-
-/*
- * The @dev_base list is protected by @dev_base_lock and the rtln
- * semaphore.
- *
- * Pure readers hold dev_base_lock for reading.
- *
- * Writers must hold the rtnl semaphore while they loop through the
- * dev_base list, and hold dev_base_lock for writing when they do the
- * actual updates. This allows pure readers to access the list even
- * while a writer is preparing to update it.
- *
- * To put it another way, dev_base_lock is held for writing only to
- * protect against pure readers; the rtnl semaphore provides the
- * protection against other writers.
- *
- * See, for example usages, register_netdevice() and
- * unregister_netdevice(), which must be called with the rtnl
- * semaphore held.
- */
-struct net_device *dev_base;
-static struct net_device **dev_tail = &dev_base;
-DEFINE_RWLOCK(dev_base_lock);
-
-EXPORT_SYMBOL(dev_base);
-EXPORT_SYMBOL(dev_base_lock);
-
-#define NETDEV_HASHBITS 8
-static struct hlist_head dev_name_head[1<<NETDEV_HASHBITS];
-static struct hlist_head dev_index_head[1<<NETDEV_HASHBITS];
-
-static inline struct hlist_head *dev_name_hash(const char *name)
-{
- unsigned hash = full_name_hash(name, strnlen(name, IFNAMSIZ));
- return &dev_name_head[hash & ((1<<NETDEV_HASHBITS)-1)];
-}
-
-static inline struct hlist_head *dev_index_hash(int ifindex)
-{
- return &dev_index_head[ifindex & ((1<<NETDEV_HASHBITS)-1)];
-}
-
-/*
- * Our notifier list
- */
-
-static struct notifier_block *netdev_chain;
-
-/*
- * Device drivers call our routines to queue packets here. We empty the
- * queue in the local softnet handler.
- */
-DEFINE_PER_CPU(struct softnet_data, softnet_data) = { 0, };
-
-#ifdef CONFIG_SYSFS
-extern int netdev_sysfs_init(void);
-extern int netdev_register_sysfs(struct net_device *);
-extern void netdev_unregister_sysfs(struct net_device *);
-#else
-#define netdev_sysfs_init() (0)
-#define netdev_register_sysfs(dev) (0)
-#define netdev_unregister_sysfs(dev) do { } while(0)
-#endif
-
-
-/*******************************************************************************
-
- Protocol management and registration routines
-
-*******************************************************************************/
-
-/*
- * For efficiency
- */
-
-int netdev_nit;
-
-/*
- * Add a protocol ID to the list. Now that the input handler is
- * smarter we can dispense with all the messy stuff that used to be
- * here.
- *
- * BEWARE!!! Protocol handlers, mangling input packets,
- * MUST BE last in hash buckets and checking protocol handlers
- * MUST start from promiscuous ptype_all chain in net_bh.
- * It is true now, do not change it.
- * Explanation follows: if protocol handler, mangling packet, will
- * be the first on list, it is not able to sense, that packet
- * is cloned and should be copied-on-write, so that it will
- * change it and subsequent readers will get broken packet.
- * --ANK (980803)
- */
-
-/**
- * dev_add_pack - add packet handler
- * @pt: packet type declaration
- *
- * Add a protocol handler to the networking stack. The passed &packet_type
- * is linked into kernel lists and may not be freed until it has been
- * removed from the kernel lists.
- *
- * This call does not sleep therefore it can not
- * guarantee all CPU's that are in middle of receiving packets
- * will see the new packet type (until the next received packet).
- */
-
-void dev_add_pack(struct packet_type *pt)
-{
- int hash;
-
- spin_lock_bh(&ptype_lock);
- if (pt->type == htons(ETH_P_ALL)) {
- netdev_nit++;
- list_add_rcu(&pt->list, &ptype_all);
- } else {
- hash = ntohs(pt->type) & 15;
- list_add_rcu(&pt->list, &ptype_base[hash]);
- }
- spin_unlock_bh(&ptype_lock);
-}
-
-extern void linkwatch_run_queue(void);
-
-
-
-/**
- * __dev_remove_pack - remove packet handler
- * @pt: packet type declaration
- *
- * Remove a protocol handler that was previously added to the kernel
- * protocol handlers by dev_add_pack(). The passed &packet_type is removed
- * from the kernel lists and can be freed or reused once this function
- * returns.
- *
- * The packet type might still be in use by receivers
- * and must not be freed until after all the CPU's have gone
- * through a quiescent state.
- */
-void __dev_remove_pack(struct packet_type *pt)
-{
- struct list_head *head;
- struct packet_type *pt1;
-
- spin_lock_bh(&ptype_lock);
-
- if (pt->type == htons(ETH_P_ALL)) {
- netdev_nit--;
- head = &ptype_all;
- } else
- head = &ptype_base[ntohs(pt->type) & 15];
-
- list_for_each_entry(pt1, head, list) {
- if (pt == pt1) {
- list_del_rcu(&pt->list);
- goto out;
- }
- }
-
- printk(KERN_WARNING "dev_remove_pack: %p not found.\n", pt);
-out:
- spin_unlock_bh(&ptype_lock);
-}
-/**
- * dev_remove_pack - remove packet handler
- * @pt: packet type declaration
- *
- * Remove a protocol handler that was previously added to the kernel
- * protocol handlers by dev_add_pack(). The passed &packet_type is removed
- * from the kernel lists and can be freed or reused once this function
- * returns.
- *
- * This call sleeps to guarantee that no CPU is looking at the packet
- * type after return.
- */
-void dev_remove_pack(struct packet_type *pt)
-{
- __dev_remove_pack(pt);
-
- synchronize_net();
-}
-
-/******************************************************************************
-
- Device Boot-time Settings Routines
-
-*******************************************************************************/
-
-/* Boot time configuration table */
-static struct netdev_boot_setup dev_boot_setup[NETDEV_BOOT_SETUP_MAX];
-
-/**
- * netdev_boot_setup_add - add new setup entry
- * @name: name of the device
- * @map: configured settings for the device
- *
- * Adds new setup entry to the dev_boot_setup list. The function
- * returns 0 on error and 1 on success. This is a generic routine to
- * all netdevices.
- */
-static int netdev_boot_setup_add(char *name, struct ifmap *map)
-{
- struct netdev_boot_setup *s;
- int i;
-
- s = dev_boot_setup;
- for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) {
- if (s[i].name[0] == '\0' || s[i].name[0] == ' ') {
- memset(s[i].name, 0, sizeof(s[i].name));
- strcpy(s[i].name, name);
- memcpy(&s[i].map, map, sizeof(s[i].map));
- break;
- }
- }
-
- return i >= NETDEV_BOOT_SETUP_MAX ? 0 : 1;
-}
-
-/**
- * netdev_boot_setup_check - check boot time settings
- * @dev: the netdevice
- *
- * Check boot time settings for the device.
- * The found settings are set for the device to be used
- * later in the device probing.
- * Returns 0 if no settings found, 1 if they are.
- */
-int netdev_boot_setup_check(struct net_device *dev)
-{
- struct netdev_boot_setup *s = dev_boot_setup;
- int i;
-
- for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) {
- if (s[i].name[0] != '\0' && s[i].name[0] != ' ' &&
- !strncmp(dev->name, s[i].name, strlen(s[i].name))) {
- dev->irq = s[i].map.irq;
- dev->base_addr = s[i].map.base_addr;
- dev->mem_start = s[i].map.mem_start;
- dev->mem_end = s[i].map.mem_end;
- return 1;
- }
- }
- return 0;
-}
-
-
-/**
- * netdev_boot_base - get address from boot time settings
- * @prefix: prefix for network device
- * @unit: id for network device
- *
- * Check boot time settings for the base address of device.
- * The found settings are set for the device to be used
- * later in the device probing.
- * Returns 0 if no settings found.
- */
-unsigned long netdev_boot_base(const char *prefix, int unit)
-{
- const struct netdev_boot_setup *s = dev_boot_setup;
- char name[IFNAMSIZ];
- int i;
-
- sprintf(name, "%s%d", prefix, unit);
-
- /*
- * If device already registered then return base of 1
- * to indicate not to probe for this interface
- */
- if (__dev_get_by_name(name))
- return 1;
-
- for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++)
- if (!strcmp(name, s[i].name))
- return s[i].map.base_addr;
- return 0;
-}
-
-/*
- * Saves at boot time configured settings for any netdevice.
- */
-int __init netdev_boot_setup(char *str)
-{
- int ints[5];
- struct ifmap map;
-
- str = get_options(str, ARRAY_SIZE(ints), ints);
- if (!str || !*str)
- return 0;
-
- /* Save settings */
- memset(&map, 0, sizeof(map));
- if (ints[0] > 0)
- map.irq = ints[1];
- if (ints[0] > 1)
- map.base_addr = ints[2];
- if (ints[0] > 2)
- map.mem_start = ints[3];
- if (ints[0] > 3)
- map.mem_end = ints[4];
-
- /* Add new entry to the list */
- return netdev_boot_setup_add(str, &map);
-}
-
-__setup("netdev=", netdev_boot_setup);
-
-/*******************************************************************************
-
- Device Interface Subroutines
-
-*******************************************************************************/
-
-/**
- * __dev_get_by_name - find a device by its name
- * @name: name to find
- *
- * Find an interface by name. Must be called under RTNL semaphore
- * or @dev_base_lock. If the name is found a pointer to the device
- * is returned. If the name is not found then %NULL is returned. The
- * reference counters are not incremented so the caller must be
- * careful with locks.
- */
-
-struct net_device *__dev_get_by_name(const char *name)
-{
- struct hlist_node *p;
-
- hlist_for_each(p, dev_name_hash(name)) {
- struct net_device *dev
- = hlist_entry(p, struct net_device, name_hlist);
- if (!strncmp(dev->name, name, IFNAMSIZ))
- return dev;
- }
- return NULL;
-}
-
-/**
- * dev_get_by_name - find a device by its name
- * @name: name to find
- *
- * Find an interface by name. This can be called from any
- * context and does its own locking. The returned handle has
- * the usage count incremented and the caller must use dev_put() to
- * release it when it is no longer needed. %NULL is returned if no
- * matching device is found.
- */
-
-struct net_device *dev_get_by_name(const char *name)
-{
- struct net_device *dev;
-
- read_lock(&dev_base_lock);
- dev = __dev_get_by_name(name);
- if (dev)
- dev_hold(dev);
- read_unlock(&dev_base_lock);
- return dev;
-}
-
-/**
- * __dev_get_by_index - find a device by its ifindex
- * @ifindex: index of device
- *
- * Search for an interface by index. Returns %NULL if the device
- * is not found or a pointer to the device. The device has not
- * had its reference counter increased so the caller must be careful
- * about locking. The caller must hold either the RTNL semaphore
- * or @dev_base_lock.
- */
-
-struct net_device *__dev_get_by_index(int ifindex)
-{
- struct hlist_node *p;
-
- hlist_for_each(p, dev_index_hash(ifindex)) {
- struct net_device *dev
- = hlist_entry(p, struct net_device, index_hlist);
- if (dev->ifindex == ifindex)
- return dev;
- }
- return NULL;
-}
-
-
-/**
- * dev_get_by_index - find a device by its ifindex
- * @ifindex: index of device
- *
- * Search for an interface by index. Returns NULL if the device
- * is not found or a pointer to the device. The device returned has
- * had a reference added and the pointer is safe until the user calls
- * dev_put to indicate they have finished with it.
- */
-
-struct net_device *dev_get_by_index(int ifindex)
-{
- struct net_device *dev;
-
- read_lock(&dev_base_lock);
- dev = __dev_get_by_index(ifindex);
- if (dev)
- dev_hold(dev);
- read_unlock(&dev_base_lock);
- return dev;
-}
-
-/**
- * dev_getbyhwaddr - find a device by its hardware address
- * @type: media type of device
- * @ha: hardware address
- *
- * Search for an interface by MAC address. Returns NULL if the device
- * is not found or a pointer to the device. The caller must hold the
- * rtnl semaphore. The returned device has not had its ref count increased
- * and the caller must therefore be careful about locking
- *
- * BUGS:
- * If the API was consistent this would be __dev_get_by_hwaddr
- */
-
-struct net_device *dev_getbyhwaddr(unsigned short type, char *ha)
-{
- struct net_device *dev;
-
- ASSERT_RTNL();
-
- for (dev = dev_base; dev; dev = dev->next)
- if (dev->type == type &&
- !memcmp(dev->dev_addr, ha, dev->addr_len))
- break;
- return dev;
-}
-
-struct net_device *dev_getfirstbyhwtype(unsigned short type)
-{
- struct net_device *dev;
-
- rtnl_lock();
- for (dev = dev_base; dev; dev = dev->next) {
- if (dev->type == type) {
- dev_hold(dev);
- break;
- }
- }
- rtnl_unlock();
- return dev;
-}
-
-EXPORT_SYMBOL(dev_getfirstbyhwtype);
-
-/**
- * dev_get_by_flags - find any device with given flags
- * @if_flags: IFF_* values
- * @mask: bitmask of bits in if_flags to check
- *
- * Search for any interface with the given flags. Returns NULL if a device
- * is not found or a pointer to the device. The device returned has
- * had a reference added and the pointer is safe until the user calls
- * dev_put to indicate they have finished with it.
- */
-
-struct net_device * dev_get_by_flags(unsigned short if_flags, unsigned short
mask)
-{
- struct net_device *dev;
-
- read_lock(&dev_base_lock);
- for (dev = dev_base; dev != NULL; dev = dev->next) {
- if (((dev->flags ^ if_flags) & mask) == 0) {
- dev_hold(dev);
- break;
- }
- }
- read_unlock(&dev_base_lock);
- return dev;
-}
-
-/**
- * dev_valid_name - check if name is okay for network device
- * @name: name string
- *
- * Network device names need to be valid file names to
- * to allow sysfs to work
- */
-static int dev_valid_name(const char *name)
-{
- return !(*name == '\0'
- || !strcmp(name, ".")
- || !strcmp(name, "..")
- || strchr(name, '/'));
-}
-
-/**
- * dev_alloc_name - allocate a name for a device
- * @dev: device
- * @name: name format string
- *
- * Passed a format string - eg "lt%d" it will try and find a suitable
- * id. Not efficient for many devices, not called a lot. The caller
- * must hold the dev_base or rtnl lock while allocating the name and
- * adding the device in order to avoid duplicates. Returns the number
- * of the unit assigned or a negative errno code.
- */
-
-int dev_alloc_name(struct net_device *dev, const char *name)
-{
- int i = 0;
- char buf[IFNAMSIZ];
- const char *p;
- const int max_netdevices = 8*PAGE_SIZE;
- long *inuse;
- struct net_device *d;
-
- p = strnchr(name, IFNAMSIZ-1, '%');
- if (p) {
- /*
- * Verify the string as this thing may have come from
- * the user. There must be either one "%d" and no other "%"
- * characters.
- */
- if (p[1] != 'd' || strchr(p + 2, '%'))
- return -EINVAL;
-
- /* Use one page as a bit array of possible slots */
- inuse = (long *) get_zeroed_page(GFP_ATOMIC);
- if (!inuse)
- return -ENOMEM;
-
- for (d = dev_base; d; d = d->next) {
- if (!sscanf(d->name, name, &i))
- continue;
- if (i < 0 || i >= max_netdevices)
- continue;
-
- /* avoid cases where sscanf is not exact inverse of
printf */
- snprintf(buf, sizeof(buf), name, i);
- if (!strncmp(buf, d->name, IFNAMSIZ))
- set_bit(i, inuse);
- }
-
- i = find_first_zero_bit(inuse, max_netdevices);
- free_page((unsigned long) inuse);
- }
-
- snprintf(buf, sizeof(buf), name, i);
- if (!__dev_get_by_name(buf)) {
- strlcpy(dev->name, buf, IFNAMSIZ);
- return i;
- }
-
- /* It is possible to run out of possible slots
- * when the name is long and there isn't enough space left
- * for the digits, or if all bits are used.
- */
- return -ENFILE;
-}
-
-
-/**
- * dev_change_name - change name of a device
- * @dev: device
- * @newname: name (or format string) must be at least IFNAMSIZ
- *
- * Change name of a device, can pass format strings "eth%d".
- * for wildcarding.
- */
-int dev_change_name(struct net_device *dev, char *newname)
-{
- int err = 0;
-
- ASSERT_RTNL();
-
- if (dev->flags & IFF_UP)
- return -EBUSY;
-
- if (!dev_valid_name(newname))
- return -EINVAL;
-
- if (strchr(newname, '%')) {
- err = dev_alloc_name(dev, newname);
- if (err < 0)
- return err;
- strcpy(newname, dev->name);
- }
- else if (__dev_get_by_name(newname))
- return -EEXIST;
- else
- strlcpy(dev->name, newname, IFNAMSIZ);
-
- err = class_device_rename(&dev->class_dev, dev->name);
- if (!err) {
- hlist_del(&dev->name_hlist);
- hlist_add_head(&dev->name_hlist, dev_name_hash(dev->name));
- notifier_call_chain(&netdev_chain, NETDEV_CHANGENAME, dev);
- }
-
- return err;
-}
-
-/**
- * netdev_state_change - device changes state
- * @dev: device to cause notification
- *
- * Called to indicate a device has changed state. This function calls
- * the notifier chains for netdev_chain and sends a NEWLINK message
- * to the routing socket.
- */
-void netdev_state_change(struct net_device *dev)
-{
- if (dev->flags & IFF_UP) {
- notifier_call_chain(&netdev_chain, NETDEV_CHANGE, dev);
- rtmsg_ifinfo(RTM_NEWLINK, dev, 0);
- }
-}
-
-/**
- * dev_load - load a network module
- * @name: name of interface
- *
- * If a network interface is not present and the process has suitable
- * privileges this function loads the module. If module loading is not
- * available in this kernel then it becomes a nop.
- */
-
-void dev_load(const char *name)
-{
- struct net_device *dev;
-
- read_lock(&dev_base_lock);
- dev = __dev_get_by_name(name);
- read_unlock(&dev_base_lock);
-
- if (!dev && capable(CAP_SYS_MODULE))
- request_module("%s", name);
-}
-
-static int default_rebuild_header(struct sk_buff *skb)
-{
- printk(KERN_DEBUG "%s: default_rebuild_header called -- BUG!\n",
- skb->dev ? skb->dev->name : "NULL!!!");
- kfree_skb(skb);
- return 1;
-}
-
-
-/**
- * dev_open - prepare an interface for use.
- * @dev: device to open
- *
- * Takes a device from down to up state. The device's private open
- * function is invoked and then the multicast lists are loaded. Finally
- * the device is moved into the up state and a %NETDEV_UP message is
- * sent to the netdev notifier chain.
- *
- * Calling this function on an active interface is a nop. On a failure
- * a negative errno code is returned.
- */
-int dev_open(struct net_device *dev)
-{
- int ret = 0;
-
- /*
- * Is it already up?
- */
-
- if (dev->flags & IFF_UP)
- return 0;
-
- /*
- * Is it even present?
- */
- if (!netif_device_present(dev))
- return -ENODEV;
-
- /*
- * Call device private open method
- */
- set_bit(__LINK_STATE_START, &dev->state);
- if (dev->open) {
- ret = dev->open(dev);
- if (ret)
- clear_bit(__LINK_STATE_START, &dev->state);
- }
-
- /*
- * If it went open OK then:
- */
-
- if (!ret) {
- /*
- * Set the flags.
- */
- dev->flags |= IFF_UP;
-
- /*
- * Initialize multicasting status
- */
- dev_mc_upload(dev);
-
- /*
- * Wakeup transmit queue engine
- */
- dev_activate(dev);
-
- /*
- * ... and announce new interface.
- */
- notifier_call_chain(&netdev_chain, NETDEV_UP, dev);
- }
- return ret;
-}
-
-/**
- * dev_close - shutdown an interface.
- * @dev: device to shutdown
- *
- * This function moves an active device into down state. A
- * %NETDEV_GOING_DOWN is sent to the netdev notifier chain. The device
- * is then deactivated and finally a %NETDEV_DOWN is sent to the notifier
- * chain.
- */
-int dev_close(struct net_device *dev)
-{
- if (!(dev->flags & IFF_UP))
- return 0;
-
- /*
- * Tell people we are going down, so that they can
- * prepare to death, when device is still operating.
- */
- notifier_call_chain(&netdev_chain, NETDEV_GOING_DOWN, dev);
-
- dev_deactivate(dev);
-
- clear_bit(__LINK_STATE_START, &dev->state);
-
- /* Synchronize to scheduled poll. We cannot touch poll list,
- * it can be even on different cpu. So just clear netif_running(),
- * and wait when poll really will happen. Actually, the best place
- * for this is inside dev->stop() after device stopped its irq
- * engine, but this requires more changes in devices. */
-
- smp_mb__after_clear_bit(); /* Commit netif_running(). */
- while (test_bit(__LINK_STATE_RX_SCHED, &dev->state)) {
- /* No hurry. */
- current->state = TASK_INTERRUPTIBLE;
- schedule_timeout(1);
- }
-
- /*
- * Call the device specific close. This cannot fail.
- * Only if device is UP
- *
- * We allow it to be called even after a DETACH hot-plug
- * event.
- */
- if (dev->stop)
- dev->stop(dev);
-
- /*
- * Device is now down.
- */
-
- dev->flags &= ~IFF_UP;
-
- /*
- * Tell people we are down
- */
- notifier_call_chain(&netdev_chain, NETDEV_DOWN, dev);
-
- return 0;
-}
-
-
-/*
- * Device change register/unregister. These are not inline or static
- * as we export them to the world.
- */
-
-/**
- * register_netdevice_notifier - register a network notifier block
- * @nb: notifier
- *
- * Register a notifier to be called when network device events occur.
- * The notifier passed is linked into the kernel structures and must
- * not be reused until it has been unregistered. A negative errno code
- * is returned on a failure.
- *
- * When registered all registration and up events are replayed
- * to the new notifier to allow device to have a race free
- * view of the network device list.
- */
-
-int register_netdevice_notifier(struct notifier_block *nb)
-{
- struct net_device *dev;
- int err;
-
- rtnl_lock();
- err = notifier_chain_register(&netdev_chain, nb);
- if (!err) {
- for (dev = dev_base; dev; dev = dev->next) {
- nb->notifier_call(nb, NETDEV_REGISTER, dev);
-
- if (dev->flags & IFF_UP)
- nb->notifier_call(nb, NETDEV_UP, dev);
- }
- }
- rtnl_unlock();
- return err;
-}
-
-/**
- * unregister_netdevice_notifier - unregister a network notifier block
- * @nb: notifier
- *
- * Unregister a notifier previously registered by
- * register_netdevice_notifier(). The notifier is unlinked into the
- * kernel structures and may then be reused. A negative errno code
- * is returned on a failure.
- */
-
-int unregister_netdevice_notifier(struct notifier_block *nb)
-{
- return notifier_chain_unregister(&netdev_chain, nb);
-}
-
-/**
- * call_netdevice_notifiers - call all network notifier blocks
- * @val: value passed unmodified to notifier function
- * @v: pointer passed unmodified to notifier function
- *
- * Call all network notifier blocks. Parameters and return value
- * are as for notifier_call_chain().
- */
-
-int call_netdevice_notifiers(unsigned long val, void *v)
-{
- return notifier_call_chain(&netdev_chain, val, v);
-}
-
-/* When > 0 there are consumers of rx skb time stamps */
-static atomic_t netstamp_needed = ATOMIC_INIT(0);
-
-void net_enable_timestamp(void)
-{
- atomic_inc(&netstamp_needed);
-}
-
-void net_disable_timestamp(void)
-{
- atomic_dec(&netstamp_needed);
-}
-
-static inline void net_timestamp(struct timeval *stamp)
-{
- if (atomic_read(&netstamp_needed))
- do_gettimeofday(stamp);
- else {
- stamp->tv_sec = 0;
- stamp->tv_usec = 0;
- }
-}
-
-/*
- * Support routine. Sends outgoing frames to any network
- * taps currently in use.
- */
-
-void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev)
-{
- struct packet_type *ptype;
- net_timestamp(&skb->stamp);
-
- rcu_read_lock();
- list_for_each_entry_rcu(ptype, &ptype_all, list) {
- /* Never send packets back to the socket
- * they originated from - MvS (miquels@xxxxxxxxxxxxxx)
- */
- if ((ptype->dev == dev || !ptype->dev) &&
- (ptype->af_packet_priv == NULL ||
- (struct sock *)ptype->af_packet_priv != skb->sk)) {
- struct sk_buff *skb2= skb_clone(skb, GFP_ATOMIC);
- if (!skb2)
- break;
-
- /* skb->nh should be correctly
- set by sender, so that the second statement is
- just protection against buggy protocols.
- */
- skb2->mac.raw = skb2->data;
-
- if (skb2->nh.raw < skb2->data ||
- skb2->nh.raw > skb2->tail) {
- if (net_ratelimit())
- printk(KERN_CRIT "protocol %04x is "
- "buggy, dev %s\n",
- skb2->protocol, dev->name);
- skb2->nh.raw = skb2->data;
- }
-
- skb2->h.raw = skb2->nh.raw;
- skb2->pkt_type = PACKET_OUTGOING;
- ptype->func(skb2, skb->dev, ptype);
- }
- }
- rcu_read_unlock();
-}
-
-/*
- * Invalidate hardware checksum when packet is to be mangled, and
- * complete checksum manually on outgoing path.
- */
-int skb_checksum_help(struct sk_buff *skb, int inward)
-{
- unsigned int csum;
- int ret = 0, offset = skb->h.raw - skb->data;
-
- if (inward) {
- skb->ip_summed = CHECKSUM_NONE;
- goto out;
- }
-
- if (skb_cloned(skb)) {
- ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
- if (ret)
- goto out;
- }
-
- if (offset > (int)skb->len)
- BUG();
- csum = skb_checksum(skb, offset, skb->len-offset, 0);
-
- offset = skb->tail - skb->h.raw;
- if (offset <= 0)
- BUG();
- if (skb->csum + 2 > offset)
- BUG();
-
- *(u16*)(skb->h.raw + skb->csum) = csum_fold(csum);
- skb->ip_summed = CHECKSUM_NONE;
-out:
- return ret;
-}
-
-#ifdef CONFIG_HIGHMEM
-/* Actually, we should eliminate this check as soon as we know, that:
- * 1. IOMMU is present and allows to map all the memory.
- * 2. No high memory really exists on this machine.
- */
-
-static inline int illegal_highdma(struct net_device *dev, struct sk_buff *skb)
-{
- int i;
-
- if (dev->features & NETIF_F_HIGHDMA)
- return 0;
-
- for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
- if (PageHighMem(skb_shinfo(skb)->frags[i].page))
- return 1;
-
- return 0;
-}
-#else
-#define illegal_highdma(dev, skb) (0)
-#endif
-
-extern void skb_release_data(struct sk_buff *);
-
-/* Keep head the same: replace data */
-int __skb_linearize(struct sk_buff *skb, int gfp_mask)
-{
- unsigned int size;
- u8 *data;
- long offset;
- struct skb_shared_info *ninfo;
- int headerlen = skb->data - skb->head;
- int expand = (skb->tail + skb->data_len) - skb->end;
-
- if (skb_shared(skb))
- BUG();
-
- if (expand <= 0)
- expand = 0;
-
- size = skb->end - skb->head + expand;
- size = SKB_DATA_ALIGN(size);
- data = kmalloc(size + sizeof(struct skb_shared_info), gfp_mask);
- if (!data)
- return -ENOMEM;
-
- /* Copy entire thing */
- if (skb_copy_bits(skb, -headerlen, data, headerlen + skb->len))
- BUG();
-
- /* Set up shinfo */
- ninfo = (struct skb_shared_info*)(data + size);
- atomic_set(&ninfo->dataref, 1);
- ninfo->tso_size = skb_shinfo(skb)->tso_size;
- ninfo->tso_segs = skb_shinfo(skb)->tso_segs;
- ninfo->nr_frags = 0;
- ninfo->frag_list = NULL;
-
- /* Offset between the two in bytes */
- offset = data - skb->head;
-
- /* Free old data. */
- skb_release_data(skb);
-
- skb->head = data;
- skb->end = data + size;
-
- /* Set up new pointers */
- skb->h.raw += offset;
- skb->nh.raw += offset;
- skb->mac.raw += offset;
- skb->tail += offset;
- skb->data += offset;
-
- /* We are no longer a clone, even if we were. */
- skb->cloned = 0;
-
- skb->tail += skb->data_len;
- skb->data_len = 0;
- return 0;
-}
-
-#define HARD_TX_LOCK(dev, cpu) { \
- if ((dev->features & NETIF_F_LLTX) == 0) { \
- spin_lock(&dev->xmit_lock); \
- dev->xmit_lock_owner = cpu; \
- } \
-}
-
-#define HARD_TX_UNLOCK(dev) { \
- if ((dev->features & NETIF_F_LLTX) == 0) { \
- dev->xmit_lock_owner = -1; \
- spin_unlock(&dev->xmit_lock); \
- } \
-}
-
-/**
- * dev_queue_xmit - transmit a buffer
- * @skb: buffer to transmit
- *
- * Queue a buffer for transmission to a network device. The caller must
- * have set the device and priority and built the buffer before calling
- * this function. The function can be called from an interrupt.
- *
- * A negative errno code is returned on a failure. A success does not
- * guarantee the frame will be transmitted as it may be dropped due
- * to congestion or traffic shaping.
- */
-
-int dev_queue_xmit(struct sk_buff *skb)
-{
- struct net_device *dev = skb->dev;
- struct Qdisc *q;
- int rc = -ENOMEM;
-
- if (skb_shinfo(skb)->frag_list &&
- !(dev->features & NETIF_F_FRAGLIST) &&
- __skb_linearize(skb, GFP_ATOMIC))
- goto out_kfree_skb;
-
- /* Fragmented skb is linearized if device does not support SG,
- * or if at least one of fragments is in highmem and device
- * does not support DMA from it.
- */
- if (skb_shinfo(skb)->nr_frags &&
- (!(dev->features & NETIF_F_SG) || illegal_highdma(dev, skb)) &&
- __skb_linearize(skb, GFP_ATOMIC))
- goto out_kfree_skb;
-
- /* If a checksum-deferred packet is forwarded to a device that needs a
- * checksum, correct the pointers and force checksumming.
- */
- if (skb->proto_csum_blank) {
- if (skb->protocol != htons(ETH_P_IP))
- goto out_kfree_skb;
- skb->h.raw = (unsigned char *)skb->nh.iph + 4*skb->nh.iph->ihl;
- if (skb->h.raw >= skb->tail)
- goto out_kfree_skb;
- switch (skb->nh.iph->protocol) {
- case IPPROTO_TCP:
- skb->csum = offsetof(struct tcphdr, check);
- break;
- case IPPROTO_UDP:
- skb->csum = offsetof(struct udphdr, check);
- break;
- default:
- goto out_kfree_skb;
- }
- if ((skb->h.raw + skb->csum + 2) > skb->tail)
- goto out_kfree_skb;
- skb->ip_summed = CHECKSUM_HW;
- }
-
- /* If packet is not checksummed and device does not support
- * checksumming for this protocol, complete checksumming here.
- */
- if (skb->ip_summed == CHECKSUM_HW &&
- (!(dev->features & (NETIF_F_HW_CSUM | NETIF_F_NO_CSUM)) &&
- (!(dev->features & NETIF_F_IP_CSUM) ||
- skb->protocol != htons(ETH_P_IP))))
- if (skb_checksum_help(skb, 0))
- goto out_kfree_skb;
-
- /* Disable soft irqs for various locks below. Also
- * stops preemption for RCU.
- */
- local_bh_disable();
-
- /* Updates of qdisc are serialized by queue_lock.
- * The struct Qdisc which is pointed to by qdisc is now a
- * rcu structure - it may be accessed without acquiring
- * a lock (but the structure may be stale.) The freeing of the
- * qdisc will be deferred until it's known that there are no
- * more references to it.
- *
- * If the qdisc has an enqueue function, we still need to
- * hold the queue_lock before calling it, since queue_lock
- * also serializes access to the device queue.
- */
-
- q = rcu_dereference(dev->qdisc);
-#ifdef CONFIG_NET_CLS_ACT
- skb->tc_verd = SET_TC_AT(skb->tc_verd,AT_EGRESS);
-#endif
- if (q->enqueue) {
- /* Grab device queue */
- spin_lock(&dev->queue_lock);
-
- rc = q->enqueue(skb, q);
-
- qdisc_run(dev);
-
- spin_unlock(&dev->queue_lock);
- rc = rc == NET_XMIT_BYPASS ? NET_XMIT_SUCCESS : rc;
- goto out;
- }
-
- /* The device has no queue. Common case for software devices:
- loopback, all the sorts of tunnels...
-
- Really, it is unlikely that xmit_lock protection is necessary here.
- (f.e. loopback and IP tunnels are clean ignoring statistics
- counters.)
- However, it is possible, that they rely on protection
- made by us here.
-
- Check this and shot the lock. It is not prone from deadlocks.
- Either shot noqueue qdisc, it is even simpler 8)
- */
- if (dev->flags & IFF_UP) {
- int cpu = smp_processor_id(); /* ok because BHs are off */
-
- if (dev->xmit_lock_owner != cpu) {
-
- HARD_TX_LOCK(dev, cpu);
-
- if (!netif_queue_stopped(dev)) {
- if (netdev_nit)
- dev_queue_xmit_nit(skb, dev);
-
- rc = 0;
- if (!dev->hard_start_xmit(skb, dev)) {
- HARD_TX_UNLOCK(dev);
- goto out;
- }
- }
- HARD_TX_UNLOCK(dev);
- if (net_ratelimit())
- printk(KERN_CRIT "Virtual device %s asks to "
- "queue packet!\n", dev->name);
- } else {
- /* Recursion is detected! It is possible,
- * unfortunately */
- if (net_ratelimit())
- printk(KERN_CRIT "Dead loop on virtual device "
- "%s, fix it urgently!\n", dev->name);
- }
- }
-
- rc = -ENETDOWN;
- local_bh_enable();
-
-out_kfree_skb:
- kfree_skb(skb);
- return rc;
-out:
- local_bh_enable();
- return rc;
-}
-
-
-/*=======================================================================
- Receiver routines
- =======================================================================*/
-
-int netdev_max_backlog = 300;
-int weight_p = 64; /* old backlog weight */
-/* These numbers are selected based on intuition and some
- * experimentatiom, if you have more scientific way of doing this
- * please go ahead and fix things.
- */
-int no_cong_thresh = 10;
-int no_cong = 20;
-int lo_cong = 100;
-int mod_cong = 290;
-
-DEFINE_PER_CPU(struct netif_rx_stats, netdev_rx_stat) = { 0, };
-
-
-static void get_sample_stats(int cpu)
-{
-#ifdef RAND_LIE
- unsigned long rd;
- int rq;
-#endif
- struct softnet_data *sd = &per_cpu(softnet_data, cpu);
- int blog = sd->input_pkt_queue.qlen;
- int avg_blog = sd->avg_blog;
-
- avg_blog = (avg_blog >> 1) + (blog >> 1);
-
- if (avg_blog > mod_cong) {
- /* Above moderate congestion levels. */
- sd->cng_level = NET_RX_CN_HIGH;
-#ifdef RAND_LIE
- rd = net_random();
- rq = rd % netdev_max_backlog;
- if (rq < avg_blog) /* unlucky bastard */
- sd->cng_level = NET_RX_DROP;
-#endif
- } else if (avg_blog > lo_cong) {
- sd->cng_level = NET_RX_CN_MOD;
-#ifdef RAND_LIE
- rd = net_random();
- rq = rd % netdev_max_backlog;
- if (rq < avg_blog) /* unlucky bastard */
- sd->cng_level = NET_RX_CN_HIGH;
-#endif
- } else if (avg_blog > no_cong)
- sd->cng_level = NET_RX_CN_LOW;
- else /* no congestion */
- sd->cng_level = NET_RX_SUCCESS;
-
- sd->avg_blog = avg_blog;
-}
-
-#ifdef OFFLINE_SAMPLE
-static void sample_queue(unsigned long dummy)
-{
-/* 10 ms 0r 1ms -- i don't care -- JHS */
- int next_tick = 1;
- int cpu = smp_processor_id();
-
- get_sample_stats(cpu);
- next_tick += jiffies;
- mod_timer(&samp_timer, next_tick);
-}
-#endif
-
-
-/**
- * netif_rx - post buffer to the network code
- * @skb: buffer to post
- *
- * This function receives a packet from a device driver and queues it for
- * the upper (protocol) levels to process. It always succeeds. The buffer
- * may be dropped during processing for congestion control or by the
- * protocol layers.
- *
- * return values:
- * NET_RX_SUCCESS (no congestion)
- * NET_RX_CN_LOW (low congestion)
- * NET_RX_CN_MOD (moderate congestion)
- * NET_RX_CN_HIGH (high congestion)
- * NET_RX_DROP (packet was dropped)
- *
- */
-
-int netif_rx(struct sk_buff *skb)
-{
- int this_cpu;
- struct softnet_data *queue;
- unsigned long flags;
-
-#ifdef CONFIG_NETPOLL
- if (skb->dev->netpoll_rx && netpoll_rx(skb)) {
- kfree_skb(skb);
- return NET_RX_DROP;
- }
-#endif
-
- if (!skb->stamp.tv_sec)
- net_timestamp(&skb->stamp);
-
- /*
- * The code is rearranged so that the path is the most
- * short when CPU is congested, but is still operating.
- */
- local_irq_save(flags);
- this_cpu = smp_processor_id();
- queue = &__get_cpu_var(softnet_data);
-
- __get_cpu_var(netdev_rx_stat).total++;
- if (queue->input_pkt_queue.qlen <= netdev_max_backlog) {
- if (queue->input_pkt_queue.qlen) {
- if (queue->throttle)
- goto drop;
-
-enqueue:
- dev_hold(skb->dev);
- __skb_queue_tail(&queue->input_pkt_queue, skb);
-#ifndef OFFLINE_SAMPLE
- get_sample_stats(this_cpu);
-#endif
- local_irq_restore(flags);
- return queue->cng_level;
- }
-
- if (queue->throttle)
- queue->throttle = 0;
-
- netif_rx_schedule(&queue->backlog_dev);
- goto enqueue;
- }
-
- if (!queue->throttle) {
- queue->throttle = 1;
- __get_cpu_var(netdev_rx_stat).throttled++;
- }
-
-drop:
- __get_cpu_var(netdev_rx_stat).dropped++;
- local_irq_restore(flags);
-
- kfree_skb(skb);
- return NET_RX_DROP;
-}
-
-int netif_rx_ni(struct sk_buff *skb)
-{
- int err;
-
- preempt_disable();
- err = netif_rx(skb);
- if (local_softirq_pending())
- do_softirq();
- preempt_enable();
-
- return err;
-}
-
-EXPORT_SYMBOL(netif_rx_ni);
-
-static __inline__ void skb_bond(struct sk_buff *skb)
-{
- struct net_device *dev = skb->dev;
-
- if (dev->master) {
- skb->real_dev = skb->dev;
- skb->dev = dev->master;
- }
-}
-
-static void net_tx_action(struct softirq_action *h)
-{
- struct softnet_data *sd = &__get_cpu_var(softnet_data);
-
- if (sd->completion_queue) {
- struct sk_buff *clist;
-
- local_irq_disable();
- clist = sd->completion_queue;
- sd->completion_queue = NULL;
- local_irq_enable();
-
- while (clist) {
- struct sk_buff *skb = clist;
- clist = clist->next;
-
- BUG_TRAP(!atomic_read(&skb->users));
- __kfree_skb(skb);
- }
- }
-
- if (sd->output_queue) {
- struct net_device *head;
-
- local_irq_disable();
- head = sd->output_queue;
- sd->output_queue = NULL;
- local_irq_enable();
-
- while (head) {
- struct net_device *dev = head;
- head = head->next_sched;
-
- smp_mb__before_clear_bit();
- clear_bit(__LINK_STATE_SCHED, &dev->state);
-
- if (spin_trylock(&dev->queue_lock)) {
- qdisc_run(dev);
- spin_unlock(&dev->queue_lock);
- } else {
- netif_schedule(dev);
- }
- }
- }
-}
-
-static __inline__ int deliver_skb(struct sk_buff *skb,
- struct packet_type *pt_prev)
-{
- atomic_inc(&skb->users);
- return pt_prev->func(skb, skb->dev, pt_prev);
-}
-
-#if defined(CONFIG_BRIDGE) || defined (CONFIG_BRIDGE_MODULE)
-int (*br_handle_frame_hook)(struct net_bridge_port *p, struct sk_buff **pskb);
-
-static __inline__ int handle_bridge(struct sk_buff **pskb,
- struct packet_type **pt_prev, int *ret)
-{
- struct net_bridge_port *port;
-
- if ((*pskb)->pkt_type == PACKET_LOOPBACK ||
- (port = rcu_dereference((*pskb)->dev->br_port)) == NULL)
- return 0;
-
- if (*pt_prev) {
- *ret = deliver_skb(*pskb, *pt_prev);
- *pt_prev = NULL;
- }
-
- return br_handle_frame_hook(port, pskb);
-}
-#else
-#define handle_bridge(skb, pt_prev, ret) (0)
-#endif
-
-#ifdef CONFIG_NET_CLS_ACT
-/* TODO: Maybe we should just force sch_ingress to be compiled in
- * when CONFIG_NET_CLS_ACT is? otherwise some useless instructions
- * a compare and 2 stores extra right now if we dont have it on
- * but have CONFIG_NET_CLS_ACT
- * NOTE: This doesnt stop any functionality; if you dont have
- * the ingress scheduler, you just cant add policies on ingress.
- *
- */
-static int ing_filter(struct sk_buff *skb)
-{
- struct Qdisc *q;
- struct net_device *dev = skb->dev;
- int result = TC_ACT_OK;
-
- if (dev->qdisc_ingress) {
- __u32 ttl = (__u32) G_TC_RTTL(skb->tc_verd);
- if (MAX_RED_LOOP < ttl++) {
- printk("Redir loop detected Dropping packet (%s->%s)\n",
-
skb->input_dev?skb->input_dev->name:"??",skb->dev->name);
- return TC_ACT_SHOT;
- }
-
- skb->tc_verd = SET_TC_RTTL(skb->tc_verd,ttl);
-
- skb->tc_verd = SET_TC_AT(skb->tc_verd,AT_INGRESS);
- if (NULL == skb->input_dev) {
- skb->input_dev = skb->dev;
- printk("ing_filter: fixed %s out
%s\n",skb->input_dev->name,skb->dev->name);
- }
- spin_lock(&dev->ingress_lock);
- if ((q = dev->qdisc_ingress) != NULL)
- result = q->enqueue(skb, q);
- spin_unlock(&dev->ingress_lock);
-
- }
-
- return result;
-}
-#endif
-
-int netif_receive_skb(struct sk_buff *skb)
-{
- struct packet_type *ptype, *pt_prev;
- int ret = NET_RX_DROP;
- unsigned short type;
-
-#ifdef CONFIG_NETPOLL
- if (skb->dev->netpoll_rx && skb->dev->poll && netpoll_rx(skb)) {
- kfree_skb(skb);
- return NET_RX_DROP;
- }
-#endif
-
- if (!skb->stamp.tv_sec)
- net_timestamp(&skb->stamp);
-
- skb_bond(skb);
-
- __get_cpu_var(netdev_rx_stat).total++;
-
- skb->h.raw = skb->nh.raw = skb->data;
- skb->mac_len = skb->nh.raw - skb->mac.raw;
-
- pt_prev = NULL;
-
- rcu_read_lock();
-
-#ifdef CONFIG_NET_CLS_ACT
- if (skb->tc_verd & TC_NCLS) {
- skb->tc_verd = CLR_TC_NCLS(skb->tc_verd);
- goto ncls;
- }
-#endif
-
- switch (skb->ip_summed) {
- case CHECKSUM_UNNECESSARY:
- skb->proto_csum_valid = 1;
- break;
- case CHECKSUM_HW:
- /* XXX Implement me. */
- default:
- skb->proto_csum_valid = 0;
- break;
- }
-
- list_for_each_entry_rcu(ptype, &ptype_all, list) {
- if (!ptype->dev || ptype->dev == skb->dev) {
- if (pt_prev)
- ret = deliver_skb(skb, pt_prev);
- pt_prev = ptype;
- }
- }
-
-#ifdef CONFIG_NET_CLS_ACT
- if (pt_prev) {
- ret = deliver_skb(skb, pt_prev);
- pt_prev = NULL; /* noone else should process this after*/
- } else {
- skb->tc_verd = SET_TC_OK2MUNGE(skb->tc_verd);
- }
-
- ret = ing_filter(skb);
-
- if (ret == TC_ACT_SHOT || (ret == TC_ACT_STOLEN)) {
- kfree_skb(skb);
- goto out;
- }
-
- skb->tc_verd = 0;
-ncls:
-#endif
-
- handle_diverter(skb);
-
- if (handle_bridge(&skb, &pt_prev, &ret))
- goto out;
-
- type = skb->protocol;
- list_for_each_entry_rcu(ptype, &ptype_base[ntohs(type)&15], list) {
- if (ptype->type == type &&
- (!ptype->dev || ptype->dev == skb->dev)) {
- if (pt_prev)
- ret = deliver_skb(skb, pt_prev);
- pt_prev = ptype;
- }
- }
-
- if (pt_prev) {
- ret = pt_prev->func(skb, skb->dev, pt_prev);
- } else {
- kfree_skb(skb);
- /* Jamal, now you will not able to escape explaining
- * me how you were going to use this. :-)
- */
- ret = NET_RX_DROP;
- }
-
-out:
- rcu_read_unlock();
- return ret;
-}
-
-static int process_backlog(struct net_device *backlog_dev, int *budget)
-{
- int work = 0;
- int quota = min(backlog_dev->quota, *budget);
- struct softnet_data *queue = &__get_cpu_var(softnet_data);
- unsigned long start_time = jiffies;
-
- for (;;) {
- struct sk_buff *skb;
- struct net_device *dev;
-
- local_irq_disable();
- skb = __skb_dequeue(&queue->input_pkt_queue);
- if (!skb)
- goto job_done;
- local_irq_enable();
-
- dev = skb->dev;
-
- netif_receive_skb(skb);
-
- dev_put(dev);
-
- work++;
-
- if (work >= quota || jiffies - start_time > 1)
- break;
-
- }
-
- backlog_dev->quota -= work;
- *budget -= work;
- return -1;
-
-job_done:
- backlog_dev->quota -= work;
- *budget -= work;
-
- list_del(&backlog_dev->poll_list);
- smp_mb__before_clear_bit();
- netif_poll_enable(backlog_dev);
-
- if (queue->throttle)
- queue->throttle = 0;
- local_irq_enable();
- return 0;
-}
-
-static void net_rx_action(struct softirq_action *h)
-{
- struct softnet_data *queue = &__get_cpu_var(softnet_data);
- unsigned long start_time = jiffies;
- int budget = netdev_max_backlog;
-
-
- local_irq_disable();
-
- while (!list_empty(&queue->poll_list)) {
- struct net_device *dev;
-
- if (budget <= 0 || jiffies - start_time > 1)
- goto softnet_break;
-
- local_irq_enable();
-
- dev = list_entry(queue->poll_list.next,
- struct net_device, poll_list);
-
- if (dev->quota <= 0 || dev->poll(dev, &budget)) {
- local_irq_disable();
- list_del(&dev->poll_list);
- list_add_tail(&dev->poll_list, &queue->poll_list);
- if (dev->quota < 0)
- dev->quota += dev->weight;
- else
- dev->quota = dev->weight;
- } else {
- dev_put(dev);
- local_irq_disable();
- }
- }
-out:
- local_irq_enable();
- return;
-
-softnet_break:
- __get_cpu_var(netdev_rx_stat).time_squeeze++;
- __raise_softirq_irqoff(NET_RX_SOFTIRQ);
- goto out;
-}
-
-static gifconf_func_t * gifconf_list [NPROTO];
-
-/**
- * register_gifconf - register a SIOCGIF handler
- * @family: Address family
- * @gifconf: Function handler
- *
- * Register protocol dependent address dumping routines. The handler
- * that is passed must not be freed or reused until it has been replaced
- * by another handler.
- */
-int register_gifconf(unsigned int family, gifconf_func_t * gifconf)
-{
- if (family >= NPROTO)
- return -EINVAL;
- gifconf_list[family] = gifconf;
- return 0;
-}
-
-
-/*
- * Map an interface index to its name (SIOCGIFNAME)
- */
-
-/*
- * We need this ioctl for efficient implementation of the
- * if_indextoname() function required by the IPv6 API. Without
- * it, we would have to search all the interfaces to find a
- * match. --pb
- */
-
-static int dev_ifname(struct ifreq __user *arg)
-{
- struct net_device *dev;
- struct ifreq ifr;
-
- /*
- * Fetch the caller's info block.
- */
-
- if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
- return -EFAULT;
-
- read_lock(&dev_base_lock);
- dev = __dev_get_by_index(ifr.ifr_ifindex);
- if (!dev) {
- read_unlock(&dev_base_lock);
- return -ENODEV;
- }
-
- strcpy(ifr.ifr_name, dev->name);
- read_unlock(&dev_base_lock);
-
- if (copy_to_user(arg, &ifr, sizeof(struct ifreq)))
- return -EFAULT;
- return 0;
-}
-
-/*
- * Perform a SIOCGIFCONF call. This structure will change
- * size eventually, and there is nothing I can do about it.
- * Thus we will need a 'compatibility mode'.
- */
-
-static int dev_ifconf(char __user *arg)
-{
- struct ifconf ifc;
- struct net_device *dev;
- char __user *pos;
- int len;
- int total;
- int i;
-
- /*
- * Fetch the caller's info block.
- */
-
- if (copy_from_user(&ifc, arg, sizeof(struct ifconf)))
- return -EFAULT;
-
- pos = ifc.ifc_buf;
- len = ifc.ifc_len;
-
- /*
- * Loop over the interfaces, and write an info block for each.
- */
-
- total = 0;
- for (dev = dev_base; dev; dev = dev->next) {
- for (i = 0; i < NPROTO; i++) {
- if (gifconf_list[i]) {
- int done;
- if (!pos)
- done = gifconf_list[i](dev, NULL, 0);
- else
- done = gifconf_list[i](dev, pos + total,
- len - total);
- if (done < 0)
- return -EFAULT;
- total += done;
- }
- }
- }
-
- /*
- * All done. Write the updated control block back to the caller.
- */
- ifc.ifc_len = total;
-
- /*
- * Both BSD and Solaris return 0 here, so we do too.
- */
- return copy_to_user(arg, &ifc, sizeof(struct ifconf)) ? -EFAULT : 0;
-}
-
-#ifdef CONFIG_PROC_FS
-/*
- * This is invoked by the /proc filesystem handler to display a device
- * in detail.
- */
-static __inline__ struct net_device *dev_get_idx(loff_t pos)
-{
- struct net_device *dev;
- loff_t i;
-
- for (i = 0, dev = dev_base; dev && i < pos; ++i, dev = dev->next);
-
- return i == pos ? dev : NULL;
-}
-
-void *dev_seq_start(struct seq_file *seq, loff_t *pos)
-{
- read_lock(&dev_base_lock);
- return *pos ? dev_get_idx(*pos - 1) : SEQ_START_TOKEN;
-}
-
-void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
-{
- ++*pos;
- return v == SEQ_START_TOKEN ? dev_base : ((struct net_device *)v)->next;
-}
-
-void dev_seq_stop(struct seq_file *seq, void *v)
-{
- read_unlock(&dev_base_lock);
-}
-
-static void dev_seq_printf_stats(struct seq_file *seq, struct net_device *dev)
-{
- if (dev->get_stats) {
- struct net_device_stats *stats = dev->get_stats(dev);
-
- seq_printf(seq, "%6s:%8lu %7lu %4lu %4lu %4lu %5lu %10lu %9lu "
- "%8lu %7lu %4lu %4lu %4lu %5lu %7lu %10lu\n",
- dev->name, stats->rx_bytes, stats->rx_packets,
- stats->rx_errors,
- stats->rx_dropped + stats->rx_missed_errors,
- stats->rx_fifo_errors,
- stats->rx_length_errors + stats->rx_over_errors +
- stats->rx_crc_errors + stats->rx_frame_errors,
- stats->rx_compressed, stats->multicast,
- stats->tx_bytes, stats->tx_packets,
- stats->tx_errors, stats->tx_dropped,
- stats->tx_fifo_errors, stats->collisions,
- stats->tx_carrier_errors +
- stats->tx_aborted_errors +
- stats->tx_window_errors +
- stats->tx_heartbeat_errors,
- stats->tx_compressed);
- } else
- seq_printf(seq, "%6s: No statistics available.\n", dev->name);
-}
-
-/*
- * Called from the PROCfs module. This now uses the new arbitrary sized
- * /proc/net interface to create /proc/net/dev
- */
-static int dev_seq_show(struct seq_file *seq, void *v)
-{
- if (v == SEQ_START_TOKEN)
- seq_puts(seq, "Inter-| Receive "
- " | Transmit\n"
- " face |bytes packets errs drop fifo frame "
- "compressed multicast|bytes packets errs "
- "drop fifo colls carrier compressed\n");
- else
- dev_seq_printf_stats(seq, v);
- return 0;
-}
-
-static struct netif_rx_stats *softnet_get_online(loff_t *pos)
-{
- struct netif_rx_stats *rc = NULL;
-
- while (*pos < NR_CPUS)
- if (cpu_online(*pos)) {
- rc = &per_cpu(netdev_rx_stat, *pos);
- break;
- } else
- ++*pos;
- return rc;
-}
-
-static void *softnet_seq_start(struct seq_file *seq, loff_t *pos)
-{
- return softnet_get_online(pos);
-}
-
-static void *softnet_seq_next(struct seq_file *seq, void *v, loff_t *pos)
-{
- ++*pos;
- return softnet_get_online(pos);
-}
-
-static void softnet_seq_stop(struct seq_file *seq, void *v)
-{
-}
-
-static int softnet_seq_show(struct seq_file *seq, void *v)
-{
- struct netif_rx_stats *s = v;
-
- seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
- s->total, s->dropped, s->time_squeeze, s->throttled,
- s->fastroute_hit, s->fastroute_success, s->fastroute_defer,
- s->fastroute_deferred_out,
-#if 0
- s->fastroute_latency_reduction
-#else
- s->cpu_collision
-#endif
- );
- return 0;
-}
-
-static struct seq_operations dev_seq_ops = {
- .start = dev_seq_start,
- .next = dev_seq_next,
- .stop = dev_seq_stop,
- .show = dev_seq_show,
-};
-
-static int dev_seq_open(struct inode *inode, struct file *file)
-{
- return seq_open(file, &dev_seq_ops);
-}
-
-static struct file_operations dev_seq_fops = {
- .owner = THIS_MODULE,
- .open = dev_seq_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release,
-};
-
-static struct seq_operations softnet_seq_ops = {
- .start = softnet_seq_start,
- .next = softnet_seq_next,
- .stop = softnet_seq_stop,
- .show = softnet_seq_show,
-};
-
-static int softnet_seq_open(struct inode *inode, struct file *file)
-{
- return seq_open(file, &softnet_seq_ops);
-}
-
-static struct file_operations softnet_seq_fops = {
- .owner = THIS_MODULE,
- .open = softnet_seq_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release,
-};
-
-#ifdef WIRELESS_EXT
-extern int wireless_proc_init(void);
-#else
-#define wireless_proc_init() 0
-#endif
-
-static int __init dev_proc_init(void)
-{
- int rc = -ENOMEM;
-
- if (!proc_net_fops_create("dev", S_IRUGO, &dev_seq_fops))
- goto out;
- if (!proc_net_fops_create("softnet_stat", S_IRUGO, &softnet_seq_fops))
- goto out_dev;
- if (wireless_proc_init())
- goto out_softnet;
- rc = 0;
-out:
- return rc;
-out_softnet:
- proc_net_remove("softnet_stat");
-out_dev:
- proc_net_remove("dev");
- goto out;
-}
-#else
-#define dev_proc_init() 0
-#endif /* CONFIG_PROC_FS */
-
-
-/**
- * netdev_set_master - set up master/slave pair
- * @slave: slave device
- * @master: new master device
- *
- * Changes the master device of the slave. Pass %NULL to break the
- * bonding. The caller must hold the RTNL semaphore. On a failure
- * a negative errno code is returned. On success the reference counts
- * are adjusted, %RTM_NEWLINK is sent to the routing socket and the
- * function returns zero.
- */
-int netdev_set_master(struct net_device *slave, struct net_device *master)
-{
- struct net_device *old = slave->master;
-
- ASSERT_RTNL();
-
- if (master) {
- if (old)
- return -EBUSY;
- dev_hold(master);
- }
-
- slave->master = master;
-
- synchronize_net();
-
- if (old)
- dev_put(old);
-
- if (master)
- slave->flags |= IFF_SLAVE;
- else
- slave->flags &= ~IFF_SLAVE;
-
- rtmsg_ifinfo(RTM_NEWLINK, slave, IFF_SLAVE);
- return 0;
-}
-
-/**
- * dev_set_promiscuity - update promiscuity count on a device
- * @dev: device
- * @inc: modifier
- *
- * Add or remove promsicuity from a device. While the count in the device
- * remains above zero the interface remains promiscuous. Once it hits zero
- * the device reverts back to normal filtering operation. A negative inc
- * value is used to drop promiscuity on the device.
- */
-void dev_set_promiscuity(struct net_device *dev, int inc)
-{
- unsigned short old_flags = dev->flags;
-
- dev->flags |= IFF_PROMISC;
- if ((dev->promiscuity += inc) == 0)
- dev->flags &= ~IFF_PROMISC;
- if (dev->flags ^ old_flags) {
- dev_mc_upload(dev);
- printk(KERN_INFO "device %s %s promiscuous mode\n",
- dev->name, (dev->flags & IFF_PROMISC) ? "entered" :
- "left");
- }
-}
-
-/**
- * dev_set_allmulti - update allmulti count on a device
- * @dev: device
- * @inc: modifier
- *
- * Add or remove reception of all multicast frames to a device. While the
- * count in the device remains above zero the interface remains listening
- * to all interfaces. Once it hits zero the device reverts back to normal
- * filtering operation. A negative @inc value is used to drop the counter
- * when releasing a resource needing all multicasts.
- */
-
-void dev_set_allmulti(struct net_device *dev, int inc)
-{
- unsigned short old_flags = dev->flags;
-
- dev->flags |= IFF_ALLMULTI;
- if ((dev->allmulti += inc) == 0)
- dev->flags &= ~IFF_ALLMULTI;
- if (dev->flags ^ old_flags)
- dev_mc_upload(dev);
-}
-
-unsigned dev_get_flags(const struct net_device *dev)
-{
- unsigned flags;
-
- flags = (dev->flags & ~(IFF_PROMISC |
- IFF_ALLMULTI |
- IFF_RUNNING)) |
- (dev->gflags & (IFF_PROMISC |
- IFF_ALLMULTI));
-
- if (netif_running(dev) && netif_carrier_ok(dev))
- flags |= IFF_RUNNING;
-
- return flags;
-}
-
-int dev_change_flags(struct net_device *dev, unsigned flags)
-{
- int ret;
- int old_flags = dev->flags;
-
- /*
- * Set the flags on our device.
- */
-
- dev->flags = (flags & (IFF_DEBUG | IFF_NOTRAILERS | IFF_NOARP |
- IFF_DYNAMIC | IFF_MULTICAST | IFF_PORTSEL |
- IFF_AUTOMEDIA)) |
- (dev->flags & (IFF_UP | IFF_VOLATILE | IFF_PROMISC |
- IFF_ALLMULTI));
-
- /*
- * Load in the correct multicast list now the flags have changed.
- */
-
- dev_mc_upload(dev);
-
- /*
- * Have we downed the interface. We handle IFF_UP ourselves
- * according to user attempts to set it, rather than blindly
- * setting it.
- */
-
- ret = 0;
- if ((old_flags ^ flags) & IFF_UP) { /* Bit is different ? */
- ret = ((old_flags & IFF_UP) ? dev_close : dev_open)(dev);
-
- if (!ret)
- dev_mc_upload(dev);
- }
-
- if (dev->flags & IFF_UP &&
- ((old_flags ^ dev->flags) &~ (IFF_UP | IFF_PROMISC | IFF_ALLMULTI |
- IFF_VOLATILE)))
- notifier_call_chain(&netdev_chain, NETDEV_CHANGE, dev);
-
- if ((flags ^ dev->gflags) & IFF_PROMISC) {
- int inc = (flags & IFF_PROMISC) ? +1 : -1;
- dev->gflags ^= IFF_PROMISC;
- dev_set_promiscuity(dev, inc);
- }
-
- /* NOTE: order of synchronization of IFF_PROMISC and IFF_ALLMULTI
- is important. Some (broken) drivers set IFF_PROMISC, when
- IFF_ALLMULTI is requested not asking us and not reporting.
- */
- if ((flags ^ dev->gflags) & IFF_ALLMULTI) {
- int inc = (flags & IFF_ALLMULTI) ? +1 : -1;
- dev->gflags ^= IFF_ALLMULTI;
- dev_set_allmulti(dev, inc);
- }
-
- if (old_flags ^ dev->flags)
- rtmsg_ifinfo(RTM_NEWLINK, dev, old_flags ^ dev->flags);
-
- return ret;
-}
-
-int dev_set_mtu(struct net_device *dev, int new_mtu)
-{
- int err;
-
- if (new_mtu == dev->mtu)
- return 0;
-
- /* MTU must be positive. */
- if (new_mtu < 0)
- return -EINVAL;
-
- if (!netif_device_present(dev))
- return -ENODEV;
-
- err = 0;
- if (dev->change_mtu)
- err = dev->change_mtu(dev, new_mtu);
- else
- dev->mtu = new_mtu;
- if (!err && dev->flags & IFF_UP)
- notifier_call_chain(&netdev_chain,
- NETDEV_CHANGEMTU, dev);
- return err;
-}
-
-
-/*
- * Perform the SIOCxIFxxx calls.
- */
-static int dev_ifsioc(struct ifreq *ifr, unsigned int cmd)
-{
- int err;
- struct net_device *dev = __dev_get_by_name(ifr->ifr_name);
-
- if (!dev)
- return -ENODEV;
-
- switch (cmd) {
- case SIOCGIFFLAGS: /* Get interface flags */
- ifr->ifr_flags = dev_get_flags(dev);
- return 0;
-
- case SIOCSIFFLAGS: /* Set interface flags */
- return dev_change_flags(dev, ifr->ifr_flags);
-
- case SIOCGIFMETRIC: /* Get the metric on the interface
- (currently unused) */
- ifr->ifr_metric = 0;
- return 0;
-
- case SIOCSIFMETRIC: /* Set the metric on the interface
- (currently unused) */
- return -EOPNOTSUPP;
-
- case SIOCGIFMTU: /* Get the MTU of a device */
- ifr->ifr_mtu = dev->mtu;
- return 0;
-
- case SIOCSIFMTU: /* Set the MTU of a device */
- return dev_set_mtu(dev, ifr->ifr_mtu);
-
- case SIOCGIFHWADDR:
- if (!dev->addr_len)
- memset(ifr->ifr_hwaddr.sa_data, 0, sizeof
ifr->ifr_hwaddr.sa_data);
- else
- memcpy(ifr->ifr_hwaddr.sa_data, dev->dev_addr,
- min(sizeof ifr->ifr_hwaddr.sa_data,
(size_t) dev->addr_len));
- ifr->ifr_hwaddr.sa_family = dev->type;
- return 0;
-
- case SIOCSIFHWADDR:
- if (!dev->set_mac_address)
- return -EOPNOTSUPP;
- if (ifr->ifr_hwaddr.sa_family != dev->type)
- return -EINVAL;
- if (!netif_device_present(dev))
- return -ENODEV;
- err = dev->set_mac_address(dev, &ifr->ifr_hwaddr);
- if (!err)
- notifier_call_chain(&netdev_chain,
- NETDEV_CHANGEADDR, dev);
- return err;
-
- case SIOCSIFHWBROADCAST:
- if (ifr->ifr_hwaddr.sa_family != dev->type)
- return -EINVAL;
- memcpy(dev->broadcast, ifr->ifr_hwaddr.sa_data,
- min(sizeof ifr->ifr_hwaddr.sa_data, (size_t)
dev->addr_len));
- notifier_call_chain(&netdev_chain,
- NETDEV_CHANGEADDR, dev);
- return 0;
-
- case SIOCGIFMAP:
- ifr->ifr_map.mem_start = dev->mem_start;
- ifr->ifr_map.mem_end = dev->mem_end;
- ifr->ifr_map.base_addr = dev->base_addr;
- ifr->ifr_map.irq = dev->irq;
- ifr->ifr_map.dma = dev->dma;
- ifr->ifr_map.port = dev->if_port;
- return 0;
-
- case SIOCSIFMAP:
- if (dev->set_config) {
- if (!netif_device_present(dev))
- return -ENODEV;
- return dev->set_config(dev, &ifr->ifr_map);
- }
- return -EOPNOTSUPP;
-
- case SIOCADDMULTI:
- if (!dev->set_multicast_list ||
- ifr->ifr_hwaddr.sa_family != AF_UNSPEC)
- return -EINVAL;
- if (!netif_device_present(dev))
- return -ENODEV;
- return dev_mc_add(dev, ifr->ifr_hwaddr.sa_data,
- dev->addr_len, 1);
-
- case SIOCDELMULTI:
- if (!dev->set_multicast_list ||
- ifr->ifr_hwaddr.sa_family != AF_UNSPEC)
- return -EINVAL;
- if (!netif_device_present(dev))
- return -ENODEV;
- return dev_mc_delete(dev, ifr->ifr_hwaddr.sa_data,
- dev->addr_len, 1);
-
- case SIOCGIFINDEX:
- ifr->ifr_ifindex = dev->ifindex;
- return 0;
-
- case SIOCGIFTXQLEN:
- ifr->ifr_qlen = dev->tx_queue_len;
- return 0;
-
- case SIOCSIFTXQLEN:
- if (ifr->ifr_qlen < 0)
- return -EINVAL;
- dev->tx_queue_len = ifr->ifr_qlen;
- return 0;
-
- case SIOCSIFNAME:
- ifr->ifr_newname[IFNAMSIZ-1] = '\0';
- return dev_change_name(dev, ifr->ifr_newname);
-
- /*
- * Unknown or private ioctl
- */
-
- default:
- if ((cmd >= SIOCDEVPRIVATE &&
- cmd <= SIOCDEVPRIVATE + 15) ||
- cmd == SIOCBONDENSLAVE ||
- cmd == SIOCBONDRELEASE ||
- cmd == SIOCBONDSETHWADDR ||
- cmd == SIOCBONDSLAVEINFOQUERY ||
- cmd == SIOCBONDINFOQUERY ||
- cmd == SIOCBONDCHANGEACTIVE ||
- cmd == SIOCGMIIPHY ||
- cmd == SIOCGMIIREG ||
- cmd == SIOCSMIIREG ||
- cmd == SIOCBRADDIF ||
- cmd == SIOCBRDELIF ||
- cmd == SIOCWANDEV) {
- err = -EOPNOTSUPP;
- if (dev->do_ioctl) {
- if (netif_device_present(dev))
- err = dev->do_ioctl(dev, ifr,
- cmd);
- else
- err = -ENODEV;
- }
- } else
- err = -EINVAL;
-
- }
- return err;
-}
-
-/*
- * This function handles all "interface"-type I/O control requests. The
actual
- * 'doing' part of this is dev_ifsioc above.
- */
-
-/**
- * dev_ioctl - network device ioctl
- * @cmd: command to issue
- * @arg: pointer to a struct ifreq in user space
- *
- * Issue ioctl functions to devices. This is normally called by the
- * user space syscall interfaces but can sometimes be useful for
- * other purposes. The return value is the return from the syscall if
- * positive or a negative errno code on error.
- */
-
-int dev_ioctl(unsigned int cmd, void __user *arg)
-{
- struct ifreq ifr;
- int ret;
- char *colon;
-
- /* One special case: SIOCGIFCONF takes ifconf argument
- and requires shared lock, because it sleeps writing
- to user space.
- */
-
- if (cmd == SIOCGIFCONF) {
- rtnl_shlock();
- ret = dev_ifconf((char __user *) arg);
- rtnl_shunlock();
- return ret;
- }
- if (cmd == SIOCGIFNAME)
- return dev_ifname((struct ifreq __user *)arg);
-
- if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
- return -EFAULT;
-
- ifr.ifr_name[IFNAMSIZ-1] = 0;
-
- colon = strchr(ifr.ifr_name, ':');
- if (colon)
- *colon = 0;
-
- /*
- * See which interface the caller is talking about.
- */
-
- switch (cmd) {
- /*
- * These ioctl calls:
- * - can be done by all.
- * - atomic and do not require locking.
- * - return a value
- */
- case SIOCGIFFLAGS:
- case SIOCGIFMETRIC:
- case SIOCGIFMTU:
- case SIOCGIFHWADDR:
- case SIOCGIFSLAVE:
- case SIOCGIFMAP:
- case SIOCGIFINDEX:
- case SIOCGIFTXQLEN:
- dev_load(ifr.ifr_name);
- read_lock(&dev_base_lock);
- ret = dev_ifsioc(&ifr, cmd);
- read_unlock(&dev_base_lock);
- if (!ret) {
- if (colon)
- *colon = ':';
- if (copy_to_user(arg, &ifr,
- sizeof(struct ifreq)))
- ret = -EFAULT;
- }
- return ret;
-
- case SIOCETHTOOL:
- dev_load(ifr.ifr_name);
- rtnl_lock();
- ret = dev_ethtool(&ifr);
- rtnl_unlock();
- if (!ret) {
- if (colon)
- *colon = ':';
- if (copy_to_user(arg, &ifr,
- sizeof(struct ifreq)))
- ret = -EFAULT;
- }
- return ret;
-
- /*
- * These ioctl calls:
- * - require superuser power.
- * - require strict serialization.
- * - return a value
- */
- case SIOCGMIIPHY:
- case SIOCGMIIREG:
- case SIOCSIFNAME:
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
- dev_load(ifr.ifr_name);
- rtnl_lock();
- ret = dev_ifsioc(&ifr, cmd);
- rtnl_unlock();
- if (!ret) {
- if (colon)
- *colon = ':';
- if (copy_to_user(arg, &ifr,
- sizeof(struct ifreq)))
- ret = -EFAULT;
- }
- return ret;
-
- /*
- * These ioctl calls:
- * - require superuser power.
- * - require strict serialization.
- * - do not return a value
- */
- case SIOCSIFFLAGS:
- case SIOCSIFMETRIC:
- case SIOCSIFMTU:
- case SIOCSIFMAP:
- case SIOCSIFHWADDR:
- case SIOCSIFSLAVE:
- case SIOCADDMULTI:
- case SIOCDELMULTI:
- case SIOCSIFHWBROADCAST:
- case SIOCSIFTXQLEN:
- case SIOCSMIIREG:
- case SIOCBONDENSLAVE:
- case SIOCBONDRELEASE:
- case SIOCBONDSETHWADDR:
- case SIOCBONDSLAVEINFOQUERY:
- case SIOCBONDINFOQUERY:
- case SIOCBONDCHANGEACTIVE:
- case SIOCBRADDIF:
- case SIOCBRDELIF:
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
- dev_load(ifr.ifr_name);
- rtnl_lock();
- ret = dev_ifsioc(&ifr, cmd);
- rtnl_unlock();
- return ret;
-
- case SIOCGIFMEM:
- /* Get the per device memory space. We can add this but
- * currently do not support it */
- case SIOCSIFMEM:
- /* Set the per device memory buffer space.
- * Not applicable in our case */
- case SIOCSIFLINK:
- return -EINVAL;
-
- /*
- * Unknown or private ioctl.
- */
- default:
- if (cmd == SIOCWANDEV ||
- (cmd >= SIOCDEVPRIVATE &&
- cmd <= SIOCDEVPRIVATE + 15)) {
- dev_load(ifr.ifr_name);
- rtnl_lock();
- ret = dev_ifsioc(&ifr, cmd);
- rtnl_unlock();
- if (!ret && copy_to_user(arg, &ifr,
- sizeof(struct ifreq)))
- ret = -EFAULT;
- return ret;
- }
-#ifdef WIRELESS_EXT
- /* Take care of Wireless Extensions */
- if (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST) {
- /* If command is `set a parameter', or
- * `get the encoding parameters', check if
- * the user has the right to do it */
- if (IW_IS_SET(cmd) || cmd == SIOCGIWENCODE) {
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
- }
- dev_load(ifr.ifr_name);
- rtnl_lock();
- /* Follow me in net/core/wireless.c */
- ret = wireless_process_ioctl(&ifr, cmd);
- rtnl_unlock();
- if (IW_IS_GET(cmd) &&
- copy_to_user(arg, &ifr,
- sizeof(struct ifreq)))
- ret = -EFAULT;
- return ret;
- }
-#endif /* WIRELESS_EXT */
- return -EINVAL;
- }
-}
-
-
-/**
- * dev_new_index - allocate an ifindex
- *
- * Returns a suitable unique value for a new device interface
- * number. The caller must hold the rtnl semaphore or the
- * dev_base_lock to be sure it remains unique.
- */
-static int dev_new_index(void)
-{
- static int ifindex;
- for (;;) {
- if (++ifindex <= 0)
- ifindex = 1;
- if (!__dev_get_by_index(ifindex))
- return ifindex;
- }
-}
-
-static int dev_boot_phase = 1;
-
-/* Delayed registration/unregisteration */
-static DEFINE_SPINLOCK(net_todo_list_lock);
-static struct list_head net_todo_list = LIST_HEAD_INIT(net_todo_list);
-
-static inline void net_set_todo(struct net_device *dev)
-{
- spin_lock(&net_todo_list_lock);
- list_add_tail(&dev->todo_list, &net_todo_list);
- spin_unlock(&net_todo_list_lock);
-}
-
-/**
- * register_netdevice - register a network device
- * @dev: device to register
- *
- * Take a completed network device structure and add it to the kernel
- * interfaces. A %NETDEV_REGISTER message is sent to the netdev notifier
- * chain. 0 is returned on success. A negative errno code is returned
- * on a failure to set up the device, or if the name is a duplicate.
- *
- * Callers must hold the rtnl semaphore. You may want
- * register_netdev() instead of this.
- *
- * BUGS:
- * The locking appears insufficient to guarantee two parallel registers
- * will not get the same name.
- */
-
-int register_netdevice(struct net_device *dev)
-{
- struct hlist_head *head;
- struct hlist_node *p;
- int ret;
-
- BUG_ON(dev_boot_phase);
- ASSERT_RTNL();
-
- /* When net_device's are persistent, this will be fatal. */
- BUG_ON(dev->reg_state != NETREG_UNINITIALIZED);
-
- spin_lock_init(&dev->queue_lock);
- spin_lock_init(&dev->xmit_lock);
- dev->xmit_lock_owner = -1;
-#ifdef CONFIG_NET_CLS_ACT
- spin_lock_init(&dev->ingress_lock);
-#endif
-
- ret = alloc_divert_blk(dev);
- if (ret)
- goto out;
-
- dev->iflink = -1;
-
- /* Init, if this function is available */
- if (dev->init) {
- ret = dev->init(dev);
- if (ret) {
- if (ret > 0)
- ret = -EIO;
- goto out_err;
- }
- }
-
- if (!dev_valid_name(dev->name)) {
- ret = -EINVAL;
- goto out_err;
- }
-
- dev->ifindex = dev_new_index();
- if (dev->iflink == -1)
- dev->iflink = dev->ifindex;
-
- /* Check for existence of name */
- head = dev_name_hash(dev->name);
- hlist_for_each(p, head) {
- struct net_device *d
- = hlist_entry(p, struct net_device, name_hlist);
- if (!strncmp(d->name, dev->name, IFNAMSIZ)) {
- ret = -EEXIST;
- goto out_err;
- }
- }
-
- /* Fix illegal SG+CSUM combinations. */
- if ((dev->features & NETIF_F_SG) &&
- !(dev->features & (NETIF_F_IP_CSUM |
- NETIF_F_NO_CSUM |
- NETIF_F_HW_CSUM))) {
- printk("%s: Dropping NETIF_F_SG since no checksum feature.\n",
- dev->name);
- dev->features &= ~NETIF_F_SG;
- }
-
- /* TSO requires that SG is present as well. */
- if ((dev->features & NETIF_F_TSO) &&
- !(dev->features & NETIF_F_SG)) {
- printk("%s: Dropping NETIF_F_TSO since no SG feature.\n",
- dev->name);
- dev->features &= ~NETIF_F_TSO;
- }
-
- /*
- * nil rebuild_header routine,
- * that should be never called and used as just bug trap.
- */
-
- if (!dev->rebuild_header)
- dev->rebuild_header = default_rebuild_header;
-
- /*
- * Default initial state at registry is that the
- * device is present.
- */
-
- set_bit(__LINK_STATE_PRESENT, &dev->state);
-
- dev->next = NULL;
- dev_init_scheduler(dev);
- write_lock_bh(&dev_base_lock);
- *dev_tail = dev;
- dev_tail = &dev->next;
- hlist_add_head(&dev->name_hlist, head);
- hlist_add_head(&dev->index_hlist, dev_index_hash(dev->ifindex));
- dev_hold(dev);
- dev->reg_state = NETREG_REGISTERING;
- write_unlock_bh(&dev_base_lock);
-
- /* Notify protocols, that a new device appeared. */
- notifier_call_chain(&netdev_chain, NETDEV_REGISTER, dev);
-
- /* Finish registration after unlock */
- net_set_todo(dev);
- ret = 0;
-
-out:
- return ret;
-out_err:
- free_divert_blk(dev);
- goto out;
-}
-
-/**
- * register_netdev - register a network device
- * @dev: device to register
- *
- * Take a completed network device structure and add it to the kernel
- * interfaces. A %NETDEV_REGISTER message is sent to the netdev notifier
- * chain. 0 is returned on success. A negative errno code is returned
- * on a failure to set up the device, or if the name is a duplicate.
- *
- * This is a wrapper around register_netdev that takes the rtnl semaphore
- * and expands the device name if you passed a format string to
- * alloc_netdev.
- */
-int register_netdev(struct net_device *dev)
-{
- int err;
-
- rtnl_lock();
-
- /*
- * If the name is a format string the caller wants us to do a
- * name allocation.
- */
- if (strchr(dev->name, '%')) {
- err = dev_alloc_name(dev, dev->name);
- if (err < 0)
- goto out;
- }
-
- /*
- * Back compatibility hook. Kill this one in 2.5
- */
- if (dev->name[0] == 0 || dev->name[0] == ' ') {
- err = dev_alloc_name(dev, "eth%d");
- if (err < 0)
- goto out;
- }
-
- err = register_netdevice(dev);
-out:
- rtnl_unlock();
- return err;
-}
-EXPORT_SYMBOL(register_netdev);
-
-/*
- * netdev_wait_allrefs - wait until all references are gone.
- *
- * This is called when unregistering network devices.
- *
- * Any protocol or device that holds a reference should register
- * for netdevice notification, and cleanup and put back the
- * reference if they receive an UNREGISTER event.
- * We can get stuck here if buggy protocols don't correctly
- * call dev_put.
- */
-static void netdev_wait_allrefs(struct net_device *dev)
-{
- unsigned long rebroadcast_time, warning_time;
-
- rebroadcast_time = warning_time = jiffies;
- while (atomic_read(&dev->refcnt) != 0) {
- if (time_after(jiffies, rebroadcast_time + 1 * HZ)) {
- rtnl_shlock();
-
- /* Rebroadcast unregister notification */
- notifier_call_chain(&netdev_chain,
- NETDEV_UNREGISTER, dev);
-
- if (test_bit(__LINK_STATE_LINKWATCH_PENDING,
- &dev->state)) {
- /* We must not have linkwatch events
- * pending on unregister. If this
- * happens, we simply run the queue
- * unscheduled, resulting in a noop
- * for this device.
- */
- linkwatch_run_queue();
- }
-
- rtnl_shunlock();
-
- rebroadcast_time = jiffies;
- }
-
- msleep(250);
-
- if (time_after(jiffies, warning_time + 10 * HZ)) {
- printk(KERN_EMERG "unregister_netdevice: "
- "waiting for %s to become free. Usage "
- "count = %d\n",
- dev->name, atomic_read(&dev->refcnt));
- warning_time = jiffies;
- }
- }
-}
-
-/* The sequence is:
- *
- * rtnl_lock();
- * ...
- * register_netdevice(x1);
- * register_netdevice(x2);
- * ...
- * unregister_netdevice(y1);
- * unregister_netdevice(y2);
- * ...
- * rtnl_unlock();
- * free_netdev(y1);
- * free_netdev(y2);
- *
- * We are invoked by rtnl_unlock() after it drops the semaphore.
- * This allows us to deal with problems:
- * 1) We can create/delete sysfs objects which invoke hotplug
- * without deadlocking with linkwatch via keventd.
- * 2) Since we run with the RTNL semaphore not held, we can sleep
- * safely in order to wait for the netdev refcnt to drop to zero.
- */
-static DECLARE_MUTEX(net_todo_run_mutex);
-void netdev_run_todo(void)
-{
- struct list_head list = LIST_HEAD_INIT(list);
- int err;
-
-
- /* Need to guard against multiple cpu's getting out of order. */
- down(&net_todo_run_mutex);
-
- /* Not safe to do outside the semaphore. We must not return
- * until all unregister events invoked by the local processor
- * have been completed (either by this todo run, or one on
- * another cpu).
- */
- if (list_empty(&net_todo_list))
- goto out;
-
- /* Snapshot list, allow later requests */
- spin_lock(&net_todo_list_lock);
- list_splice_init(&net_todo_list, &list);
- spin_unlock(&net_todo_list_lock);
-
- while (!list_empty(&list)) {
- struct net_device *dev
- = list_entry(list.next, struct net_device, todo_list);
- list_del(&dev->todo_list);
-
- switch(dev->reg_state) {
- case NETREG_REGISTERING:
- err = netdev_register_sysfs(dev);
- if (err)
- printk(KERN_ERR "%s: failed sysfs registration
(%d)\n",
- dev->name, err);
- dev->reg_state = NETREG_REGISTERED;
- break;
-
- case NETREG_UNREGISTERING:
- netdev_unregister_sysfs(dev);
- dev->reg_state = NETREG_UNREGISTERED;
-
- netdev_wait_allrefs(dev);
-
- /* paranoia */
- BUG_ON(atomic_read(&dev->refcnt));
- BUG_TRAP(!dev->ip_ptr);
- BUG_TRAP(!dev->ip6_ptr);
- BUG_TRAP(!dev->dn_ptr);
-
-
- /* It must be the very last action,
- * after this 'dev' may point to freed up memory.
- */
- if (dev->destructor)
- dev->destructor(dev);
- break;
-
- default:
- printk(KERN_ERR "network todo '%s' but state %d\n",
- dev->name, dev->reg_state);
- break;
- }
- }
-
-out:
- up(&net_todo_run_mutex);
-}
-
-/**
- * alloc_netdev - allocate network device
- * @sizeof_priv: size of private data to allocate space for
- * @name: device name format string
- * @setup: callback to initialize device
- *
- * Allocates a struct net_device with private data area for driver use
- * and performs basic initialization.
- */
-struct net_device *alloc_netdev(int sizeof_priv, const char *name,
- void (*setup)(struct net_device *))
-{
- void *p;
- struct net_device *dev;
- int alloc_size;
-
- /* ensure 32-byte alignment of both the device and private area */
- alloc_size = (sizeof(*dev) + NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST;
- alloc_size += sizeof_priv + NETDEV_ALIGN_CONST;
-
- p = kmalloc(alloc_size, GFP_KERNEL);
- if (!p) {
- printk(KERN_ERR "alloc_dev: Unable to allocate device.\n");
- return NULL;
- }
- memset(p, 0, alloc_size);
-
- dev = (struct net_device *)
- (((long)p + NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST);
- dev->padded = (char *)dev - (char *)p;
-
- if (sizeof_priv)
- dev->priv = netdev_priv(dev);
-
- setup(dev);
- strcpy(dev->name, name);
- return dev;
-}
-EXPORT_SYMBOL(alloc_netdev);
-
-/**
- * free_netdev - free network device
- * @dev: device
- *
- * This function does the last stage of destroying an allocated device
- * interface. The reference to the device object is released.
- * If this is the last reference then it will be freed.
- */
-void free_netdev(struct net_device *dev)
-{
-#ifdef CONFIG_SYSFS
- /* Compatiablity with error handling in drivers */
- if (dev->reg_state == NETREG_UNINITIALIZED) {
- kfree((char *)dev - dev->padded);
- return;
- }
-
- BUG_ON(dev->reg_state != NETREG_UNREGISTERED);
- dev->reg_state = NETREG_RELEASED;
-
- /* will free via class release */
- class_device_put(&dev->class_dev);
-#else
- kfree((char *)dev - dev->padded);
-#endif
-}
-
-/* Synchronize with packet receive processing. */
-void synchronize_net(void)
-{
- might_sleep();
- synchronize_kernel();
-}
-
-/**
- * unregister_netdevice - remove device from the kernel
- * @dev: device
- *
- * This function shuts down a device interface and removes it
- * from the kernel tables. On success 0 is returned, on a failure
- * a negative errno code is returned.
- *
- * Callers must hold the rtnl semaphore. You may want
- * unregister_netdev() instead of this.
- */
-
-int unregister_netdevice(struct net_device *dev)
-{
- struct net_device *d, **dp;
-
- BUG_ON(dev_boot_phase);
- ASSERT_RTNL();
-
- /* Some devices call without registering for initialization unwind. */
- if (dev->reg_state == NETREG_UNINITIALIZED) {
- printk(KERN_DEBUG "unregister_netdevice: device %s/%p never "
- "was registered\n", dev->name, dev);
- return -ENODEV;
- }
-
- BUG_ON(dev->reg_state != NETREG_REGISTERED);
-
- /* If device is running, close it first. */
- if (dev->flags & IFF_UP)
- dev_close(dev);
-
- /* And unlink it from device chain. */
- for (dp = &dev_base; (d = *dp) != NULL; dp = &d->next) {
- if (d == dev) {
- write_lock_bh(&dev_base_lock);
- hlist_del(&dev->name_hlist);
- hlist_del(&dev->index_hlist);
- if (dev_tail == &dev->next)
- dev_tail = dp;
- *dp = d->next;
- write_unlock_bh(&dev_base_lock);
- break;
- }
- }
- if (!d) {
- printk(KERN_ERR "unregister net_device: '%s' not found\n",
- dev->name);
- return -ENODEV;
- }
-
- dev->reg_state = NETREG_UNREGISTERING;
-
- synchronize_net();
-
- /* Shutdown queueing discipline. */
- dev_shutdown(dev);
-
-
- /* Notify protocols, that we are about to destroy
- this device. They should clean all the things.
- */
- notifier_call_chain(&netdev_chain, NETDEV_UNREGISTER, dev);
-
- /*
- * Flush the multicast chain
- */
- dev_mc_discard(dev);
-
- if (dev->uninit)
- dev->uninit(dev);
-
- /* Notifier chain MUST detach us from master device. */
- BUG_TRAP(!dev->master);
-
- free_divert_blk(dev);
-
- /* Finish processing unregister after unlock */
- net_set_todo(dev);
-
- synchronize_net();
-
- dev_put(dev);
- return 0;
-}
-
-/**
- * unregister_netdev - remove device from the kernel
- * @dev: device
- *
- * This function shuts down a device interface and removes it
- * from the kernel tables. On success 0 is returned, on a failure
- * a negative errno code is returned.
- *
- * This is just a wrapper for unregister_netdevice that takes
- * the rtnl semaphore. In general you want to use this and not
- * unregister_netdevice.
- */
-void unregister_netdev(struct net_device *dev)
-{
- rtnl_lock();
- unregister_netdevice(dev);
- rtnl_unlock();
-}
-
-EXPORT_SYMBOL(unregister_netdev);
-
-#ifdef CONFIG_HOTPLUG_CPU
-static int dev_cpu_callback(struct notifier_block *nfb,
- unsigned long action,
- void *ocpu)
-{
- struct sk_buff **list_skb;
- struct net_device **list_net;
- struct sk_buff *skb;
- unsigned int cpu, oldcpu = (unsigned long)ocpu;
- struct softnet_data *sd, *oldsd;
-
- if (action != CPU_DEAD)
- return NOTIFY_OK;
-
- local_irq_disable();
- cpu = smp_processor_id();
- sd = &per_cpu(softnet_data, cpu);
- oldsd = &per_cpu(softnet_data, oldcpu);
-
- /* Find end of our completion_queue. */
- list_skb = &sd->completion_queue;
- while (*list_skb)
- list_skb = &(*list_skb)->next;
- /* Append completion queue from offline CPU. */
- *list_skb = oldsd->completion_queue;
- oldsd->completion_queue = NULL;
-
- /* Find end of our output_queue. */
- list_net = &sd->output_queue;
- while (*list_net)
- list_net = &(*list_net)->next_sched;
- /* Append output queue from offline CPU. */
- *list_net = oldsd->output_queue;
- oldsd->output_queue = NULL;
-
- raise_softirq_irqoff(NET_TX_SOFTIRQ);
- local_irq_enable();
-
- /* Process offline CPU's input_pkt_queue */
- while ((skb = __skb_dequeue(&oldsd->input_pkt_queue)))
- netif_rx(skb);
-
- return NOTIFY_OK;
-}
-#endif /* CONFIG_HOTPLUG_CPU */
-
-
-/*
- * Initialize the DEV module. At boot time this walks the device list and
- * unhooks any devices that fail to initialise (normally hardware not
- * present) and leaves us with a valid list of present and active devices.
- *
- */
-
-/*
- * This is called single threaded during boot, so no need
- * to take the rtnl semaphore.
- */
-static int __init net_dev_init(void)
-{
- int i, rc = -ENOMEM;
-
- BUG_ON(!dev_boot_phase);
-
- net_random_init();
-
- if (dev_proc_init())
- goto out;
-
- if (netdev_sysfs_init())
- goto out;
-
- INIT_LIST_HEAD(&ptype_all);
- for (i = 0; i < 16; i++)
- INIT_LIST_HEAD(&ptype_base[i]);
-
- for (i = 0; i < ARRAY_SIZE(dev_name_head); i++)
- INIT_HLIST_HEAD(&dev_name_head[i]);
-
- for (i = 0; i < ARRAY_SIZE(dev_index_head); i++)
- INIT_HLIST_HEAD(&dev_index_head[i]);
-
- /*
- * Initialise the packet receive queues.
- */
-
- for (i = 0; i < NR_CPUS; i++) {
- struct softnet_data *queue;
-
- queue = &per_cpu(softnet_data, i);
- skb_queue_head_init(&queue->input_pkt_queue);
- queue->throttle = 0;
- queue->cng_level = 0;
- queue->avg_blog = 10; /* arbitrary non-zero */
- queue->completion_queue = NULL;
- INIT_LIST_HEAD(&queue->poll_list);
- set_bit(__LINK_STATE_START, &queue->backlog_dev.state);
- queue->backlog_dev.weight = weight_p;
- queue->backlog_dev.poll = process_backlog;
- atomic_set(&queue->backlog_dev.refcnt, 1);
- }
-
-#ifdef OFFLINE_SAMPLE
- samp_timer.expires = jiffies + (10 * HZ);
- add_timer(&samp_timer);
-#endif
-
- dev_boot_phase = 0;
-
- open_softirq(NET_TX_SOFTIRQ, net_tx_action, NULL);
- open_softirq(NET_RX_SOFTIRQ, net_rx_action, NULL);
-
- hotcpu_notifier(dev_cpu_callback, 0);
- dst_init();
- dev_mcast_init();
- rc = 0;
-out:
- return rc;
-}
-
-subsys_initcall(net_dev_init);
-
-EXPORT_SYMBOL(__dev_get_by_index);
-EXPORT_SYMBOL(__dev_get_by_name);
-EXPORT_SYMBOL(__dev_remove_pack);
-EXPORT_SYMBOL(__skb_linearize);
-EXPORT_SYMBOL(dev_add_pack);
-EXPORT_SYMBOL(dev_alloc_name);
-EXPORT_SYMBOL(dev_close);
-EXPORT_SYMBOL(dev_get_by_flags);
-EXPORT_SYMBOL(dev_get_by_index);
-EXPORT_SYMBOL(dev_get_by_name);
-EXPORT_SYMBOL(dev_ioctl);
-EXPORT_SYMBOL(dev_open);
-EXPORT_SYMBOL(dev_queue_xmit);
-EXPORT_SYMBOL(dev_remove_pack);
-EXPORT_SYMBOL(dev_set_allmulti);
-EXPORT_SYMBOL(dev_set_promiscuity);
-EXPORT_SYMBOL(dev_change_flags);
-EXPORT_SYMBOL(dev_set_mtu);
-EXPORT_SYMBOL(free_netdev);
-EXPORT_SYMBOL(netdev_boot_setup_check);
-EXPORT_SYMBOL(netdev_set_master);
-EXPORT_SYMBOL(netdev_state_change);
-EXPORT_SYMBOL(netif_receive_skb);
-EXPORT_SYMBOL(netif_rx);
-EXPORT_SYMBOL(register_gifconf);
-EXPORT_SYMBOL(register_netdevice);
-EXPORT_SYMBOL(register_netdevice_notifier);
-EXPORT_SYMBOL(skb_checksum_help);
-EXPORT_SYMBOL(synchronize_net);
-EXPORT_SYMBOL(unregister_netdevice);
-EXPORT_SYMBOL(unregister_netdevice_notifier);
-EXPORT_SYMBOL(net_enable_timestamp);
-EXPORT_SYMBOL(net_disable_timestamp);
-
-#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-EXPORT_SYMBOL(br_handle_frame_hook);
-#endif
-
-#ifdef CONFIG_KMOD
-EXPORT_SYMBOL(dev_load);
-#endif
-
-EXPORT_PER_CPU_SYMBOL(softnet_data);
diff -r d75a502b45eb -r 43e28a2f6037 linux-2.6.11-xen-sparse/net/core/skbuff.c
--- a/linux-2.6.11-xen-sparse/net/core/skbuff.c Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,1523 +0,0 @@
-/*
- * Routines having to do with the 'struct sk_buff' memory handlers.
- *
- * Authors: Alan Cox <iiitac@xxxxxxxxxxxxxx>
- * Florian La Roche <rzsfl@xxxxxxxxxxxx>
- *
- * Version: $Id: skbuff.c,v 1.90 2001/11/07 05:56:19 davem Exp $
- *
- * Fixes:
- * Alan Cox : Fixed the worst of the load
- * balancer bugs.
- * Dave Platt : Interrupt stacking fix.
- * Richard Kooijman : Timestamp fixes.
- * Alan Cox : Changed buffer format.
- * Alan Cox : destructor hook for AF_UNIX etc.
- * Linus Torvalds : Better skb_clone.
- * Alan Cox : Added skb_copy.
- * Alan Cox : Added all the changed routines Linus
- * only put in the headers
- * Ray VanTassle : Fixed --skb->lock in free
- * Alan Cox : skb_copy copy arp field
- * Andi Kleen : slabified it.
- * Robert Olsson : Removed skb_head_pool
- *
- * NOTE:
- * The __skb_ routines should be called with interrupts
- * disabled, or you better be *real* sure that the operation is atomic
- * with respect to whatever list is being frobbed (e.g. via lock_sock()
- * or via disabling bottom half handlers, etc).
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-/*
- * The functions in this file will not compile correctly with gcc 2.4.x
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/interrupt.h>
-#include <linux/in.h>
-#include <linux/inet.h>
-#include <linux/slab.h>
-#include <linux/netdevice.h>
-#ifdef CONFIG_NET_CLS_ACT
-#include <net/pkt_sched.h>
-#endif
-#include <linux/string.h>
-#include <linux/skbuff.h>
-#include <linux/cache.h>
-#include <linux/rtnetlink.h>
-#include <linux/init.h>
-#include <linux/highmem.h>
-
-#include <net/protocol.h>
-#include <net/dst.h>
-#include <net/sock.h>
-#include <net/checksum.h>
-#include <net/xfrm.h>
-
-#include <asm/uaccess.h>
-#include <asm/system.h>
-
-static kmem_cache_t *skbuff_head_cache;
-
-/*
- * Keep out-of-line to prevent kernel bloat.
- * __builtin_return_address is not used because it is not always
- * reliable.
- */
-
-/**
- * skb_over_panic - private function
- * @skb: buffer
- * @sz: size
- * @here: address
- *
- * Out of line support code for skb_put(). Not user callable.
- */
-void skb_over_panic(struct sk_buff *skb, int sz, void *here)
-{
- printk(KERN_INFO "skput:over: %p:%d put:%d dev:%s",
- here, skb->len, sz, skb->dev ? skb->dev->name : "<NULL>");
- BUG();
-}
-
-/**
- * skb_under_panic - private function
- * @skb: buffer
- * @sz: size
- * @here: address
- *
- * Out of line support code for skb_push(). Not user callable.
- */
-
-void skb_under_panic(struct sk_buff *skb, int sz, void *here)
-{
- printk(KERN_INFO "skput:under: %p:%d put:%d dev:%s",
- here, skb->len, sz, skb->dev ? skb->dev->name : "<NULL>");
- BUG();
-}
-
-/* Allocate a new skbuff. We do this ourselves so we can fill in a few
- * 'private' fields and also do memory statistics to find all the
- * [BEEP] leaks.
- *
- */
-
-/**
- * alloc_skb - allocate a network buffer
- * @size: size to allocate
- * @gfp_mask: allocation mask
- *
- * Allocate a new &sk_buff. The returned buffer has no headroom and a
- * tail room of size bytes. The object has a reference count of one.
- * The return is the buffer. On a failure the return is %NULL.
- *
- * Buffers may only be allocated from interrupts using a @gfp_mask of
- * %GFP_ATOMIC.
- */
-struct sk_buff *alloc_skb(unsigned int size, int gfp_mask)
-{
- struct sk_buff *skb;
- u8 *data;
-
- /* Get the HEAD */
- skb = kmem_cache_alloc(skbuff_head_cache,
- gfp_mask & ~__GFP_DMA);
- if (!skb)
- goto out;
-
- /* Get the DATA. Size must match skb_add_mtu(). */
- size = SKB_DATA_ALIGN(size);
- data = kmalloc(size + sizeof(struct skb_shared_info), gfp_mask);
- if (!data)
- goto nodata;
-
- memset(skb, 0, offsetof(struct sk_buff, truesize));
- skb->truesize = size + sizeof(struct sk_buff);
- atomic_set(&skb->users, 1);
- skb->head = data;
- skb->data = data;
- skb->tail = data;
- skb->end = data + size;
-
- atomic_set(&(skb_shinfo(skb)->dataref), 1);
- skb_shinfo(skb)->nr_frags = 0;
- skb_shinfo(skb)->tso_size = 0;
- skb_shinfo(skb)->tso_segs = 0;
- skb_shinfo(skb)->frag_list = NULL;
-out:
- return skb;
-nodata:
- kmem_cache_free(skbuff_head_cache, skb);
- skb = NULL;
- goto out;
-}
-
-/**
- * alloc_skb_from_cache - allocate a network buffer
- * @cp: kmem_cache from which to allocate the data area
- * (object size must be big enough for @size bytes + skb overheads)
- * @size: size to allocate
- * @gfp_mask: allocation mask
- *
- * Allocate a new &sk_buff. The returned buffer has no headroom and
- * tail room of size bytes. The object has a reference count of one.
- * The return is the buffer. On a failure the return is %NULL.
- *
- * Buffers may only be allocated from interrupts using a @gfp_mask of
- * %GFP_ATOMIC.
- */
-struct sk_buff *alloc_skb_from_cache(kmem_cache_t *cp,
- unsigned int size, int gfp_mask)
-{
- struct sk_buff *skb;
- u8 *data;
-
- /* Get the HEAD */
- skb = kmem_cache_alloc(skbuff_head_cache,
- gfp_mask & ~__GFP_DMA);
- if (!skb)
- goto out;
-
- /* Get the DATA. */
- size = SKB_DATA_ALIGN(size);
- data = kmem_cache_alloc(cp, gfp_mask);
- if (!data)
- goto nodata;
-
- memset(skb, 0, offsetof(struct sk_buff, truesize));
- skb->truesize = size + sizeof(struct sk_buff);
- atomic_set(&skb->users, 1);
- skb->head = data;
- skb->data = data;
- skb->tail = data;
- skb->end = data + size;
-
- atomic_set(&(skb_shinfo(skb)->dataref), 1);
- skb_shinfo(skb)->nr_frags = 0;
- skb_shinfo(skb)->tso_size = 0;
- skb_shinfo(skb)->tso_segs = 0;
- skb_shinfo(skb)->frag_list = NULL;
-out:
- return skb;
-nodata:
- kmem_cache_free(skbuff_head_cache, skb);
- skb = NULL;
- goto out;
-}
-
-
-static void skb_drop_fraglist(struct sk_buff *skb)
-{
- struct sk_buff *list = skb_shinfo(skb)->frag_list;
-
- skb_shinfo(skb)->frag_list = NULL;
-
- do {
- struct sk_buff *this = list;
- list = list->next;
- kfree_skb(this);
- } while (list);
-}
-
-static void skb_clone_fraglist(struct sk_buff *skb)
-{
- struct sk_buff *list;
-
- for (list = skb_shinfo(skb)->frag_list; list; list = list->next)
- skb_get(list);
-}
-
-void skb_release_data(struct sk_buff *skb)
-{
- if (!skb->cloned ||
- atomic_dec_and_test(&(skb_shinfo(skb)->dataref))) {
- if (skb_shinfo(skb)->nr_frags) {
- int i;
- for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
- put_page(skb_shinfo(skb)->frags[i].page);
- }
-
- if (skb_shinfo(skb)->frag_list)
- skb_drop_fraglist(skb);
-
- kfree(skb->head);
- }
-}
-
-/*
- * Free an skbuff by memory without cleaning the state.
- */
-void kfree_skbmem(struct sk_buff *skb)
-{
- skb_release_data(skb);
- kmem_cache_free(skbuff_head_cache, skb);
-}
-
-/**
- * __kfree_skb - private function
- * @skb: buffer
- *
- * Free an sk_buff. Release anything attached to the buffer.
- * Clean the state. This is an internal helper function. Users should
- * always call kfree_skb
- */
-
-void __kfree_skb(struct sk_buff *skb)
-{
- if (skb->list) {
- printk(KERN_WARNING "Warning: kfree_skb passed an skb still "
- "on a list (from %p).\n", NET_CALLER(skb));
- BUG();
- }
-
- dst_release(skb->dst);
-#ifdef CONFIG_XFRM
- secpath_put(skb->sp);
-#endif
- if(skb->destructor) {
- if (in_irq())
- printk(KERN_WARNING "Warning: kfree_skb on "
- "hard IRQ %p\n", NET_CALLER(skb));
- skb->destructor(skb);
- }
-#ifdef CONFIG_NETFILTER
- nf_conntrack_put(skb->nfct);
-#ifdef CONFIG_BRIDGE_NETFILTER
- nf_bridge_put(skb->nf_bridge);
-#endif
-#endif
-/* XXX: IS this still necessary? - JHS */
-#ifdef CONFIG_NET_SCHED
- skb->tc_index = 0;
-#ifdef CONFIG_NET_CLS_ACT
- skb->tc_verd = 0;
- skb->tc_classid = 0;
-#endif
-#endif
-
- kfree_skbmem(skb);
-}
-
-/**
- * skb_clone - duplicate an sk_buff
- * @skb: buffer to clone
- * @gfp_mask: allocation priority
- *
- * Duplicate an &sk_buff. The new one is not owned by a socket. Both
- * copies share the same packet data but not structure. The new
- * buffer has a reference count of 1. If the allocation fails the
- * function returns %NULL otherwise the new buffer is returned.
- *
- * If this function is called from an interrupt gfp_mask() must be
- * %GFP_ATOMIC.
- */
-
-struct sk_buff *skb_clone(struct sk_buff *skb, int gfp_mask)
-{
- struct sk_buff *n = kmem_cache_alloc(skbuff_head_cache, gfp_mask);
-
- if (!n)
- return NULL;
-
-#define C(x) n->x = skb->x
-
- n->next = n->prev = NULL;
- n->list = NULL;
- n->sk = NULL;
- C(stamp);
- C(dev);
- C(real_dev);
- C(h);
- C(nh);
- C(mac);
- C(dst);
- dst_clone(skb->dst);
- C(sp);
-#ifdef CONFIG_INET
- secpath_get(skb->sp);
-#endif
- memcpy(n->cb, skb->cb, sizeof(skb->cb));
- C(len);
- C(data_len);
- C(csum);
- C(local_df);
- n->cloned = 1;
- C(proto_csum_valid);
- C(proto_csum_blank);
- C(pkt_type);
- C(ip_summed);
- C(priority);
- C(protocol);
- C(security);
- n->destructor = NULL;
-#ifdef CONFIG_NETFILTER
- C(nfmark);
- C(nfcache);
- C(nfct);
- nf_conntrack_get(skb->nfct);
- C(nfctinfo);
-#ifdef CONFIG_NETFILTER_DEBUG
- C(nf_debug);
-#endif
-#ifdef CONFIG_BRIDGE_NETFILTER
- C(nf_bridge);
- nf_bridge_get(skb->nf_bridge);
-#endif
-#endif /*CONFIG_NETFILTER*/
-#if defined(CONFIG_HIPPI)
- C(private);
-#endif
-#ifdef CONFIG_NET_SCHED
- C(tc_index);
-#ifdef CONFIG_NET_CLS_ACT
- n->tc_verd = SET_TC_VERD(skb->tc_verd,0);
- n->tc_verd = CLR_TC_OK2MUNGE(skb->tc_verd);
- n->tc_verd = CLR_TC_MUNGED(skb->tc_verd);
- C(input_dev);
- C(tc_classid);
-#endif
-
-#endif
- C(truesize);
- atomic_set(&n->users, 1);
- C(head);
- C(data);
- C(tail);
- C(end);
-
- atomic_inc(&(skb_shinfo(skb)->dataref));
- skb->cloned = 1;
-
- return n;
-}
-
-static void copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
-{
- /*
- * Shift between the two data areas in bytes
- */
- unsigned long offset = new->data - old->data;
-
- new->list = NULL;
- new->sk = NULL;
- new->dev = old->dev;
- new->real_dev = old->real_dev;
- new->priority = old->priority;
- new->protocol = old->protocol;
- new->dst = dst_clone(old->dst);
-#ifdef CONFIG_INET
- new->sp = secpath_get(old->sp);
-#endif
- new->h.raw = old->h.raw + offset;
- new->nh.raw = old->nh.raw + offset;
- new->mac.raw = old->mac.raw + offset;
- memcpy(new->cb, old->cb, sizeof(old->cb));
- new->local_df = old->local_df;
- new->pkt_type = old->pkt_type;
- new->stamp = old->stamp;
- new->destructor = NULL;
- new->security = old->security;
-#ifdef CONFIG_NETFILTER
- new->nfmark = old->nfmark;
- new->nfcache = old->nfcache;
- new->nfct = old->nfct;
- nf_conntrack_get(old->nfct);
- new->nfctinfo = old->nfctinfo;
-#ifdef CONFIG_NETFILTER_DEBUG
- new->nf_debug = old->nf_debug;
-#endif
-#ifdef CONFIG_BRIDGE_NETFILTER
- new->nf_bridge = old->nf_bridge;
- nf_bridge_get(old->nf_bridge);
-#endif
-#endif
-#ifdef CONFIG_NET_SCHED
-#ifdef CONFIG_NET_CLS_ACT
- new->tc_verd = old->tc_verd;
-#endif
- new->tc_index = old->tc_index;
-#endif
- atomic_set(&new->users, 1);
- skb_shinfo(new)->tso_size = skb_shinfo(old)->tso_size;
- skb_shinfo(new)->tso_segs = skb_shinfo(old)->tso_segs;
-}
-
-/**
- * skb_copy - create private copy of an sk_buff
- * @skb: buffer to copy
- * @gfp_mask: allocation priority
- *
- * Make a copy of both an &sk_buff and its data. This is used when the
- * caller wishes to modify the data and needs a private copy of the
- * data to alter. Returns %NULL on failure or the pointer to the buffer
- * on success. The returned buffer has a reference count of 1.
- *
- * As by-product this function converts non-linear &sk_buff to linear
- * one, so that &sk_buff becomes completely private and caller is allowed
- * to modify all the data of returned buffer. This means that this
- * function is not recommended for use in circumstances when only
- * header is going to be modified. Use pskb_copy() instead.
- */
-
-struct sk_buff *skb_copy(const struct sk_buff *skb, int gfp_mask)
-{
- int headerlen = skb->data - skb->head;
- /*
- * Allocate the copy buffer
- */
- struct sk_buff *n = alloc_skb(skb->end - skb->head + skb->data_len,
- gfp_mask);
- if (!n)
- return NULL;
-
- /* Set the data pointer */
- skb_reserve(n, headerlen);
- /* Set the tail pointer and length */
- skb_put(n, skb->len);
- n->csum = skb->csum;
- n->ip_summed = skb->ip_summed;
-
- if (skb_copy_bits(skb, -headerlen, n->head, headerlen + skb->len))
- BUG();
-
- copy_skb_header(n, skb);
- return n;
-}
-
-
-/**
- * pskb_copy - create copy of an sk_buff with private head.
- * @skb: buffer to copy
- * @gfp_mask: allocation priority
- *
- * Make a copy of both an &sk_buff and part of its data, located
- * in header. Fragmented data remain shared. This is used when
- * the caller wishes to modify only header of &sk_buff and needs
- * private copy of the header to alter. Returns %NULL on failure
- * or the pointer to the buffer on success.
- * The returned buffer has a reference count of 1.
- */
-
-struct sk_buff *pskb_copy(struct sk_buff *skb, int gfp_mask)
-{
- /*
- * Allocate the copy buffer
- */
- struct sk_buff *n = alloc_skb(skb->end - skb->head, gfp_mask);
-
- if (!n)
- goto out;
-
- /* Set the data pointer */
- skb_reserve(n, skb->data - skb->head);
- /* Set the tail pointer and length */
- skb_put(n, skb_headlen(skb));
- /* Copy the bytes */
- memcpy(n->data, skb->data, n->len);
- n->csum = skb->csum;
- n->ip_summed = skb->ip_summed;
-
- n->data_len = skb->data_len;
- n->len = skb->len;
-
- if (skb_shinfo(skb)->nr_frags) {
- int i;
-
- for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
- skb_shinfo(n)->frags[i] = skb_shinfo(skb)->frags[i];
- get_page(skb_shinfo(n)->frags[i].page);
- }
- skb_shinfo(n)->nr_frags = i;
- }
-
- if (skb_shinfo(skb)->frag_list) {
- skb_shinfo(n)->frag_list = skb_shinfo(skb)->frag_list;
- skb_clone_fraglist(n);
- }
-
- copy_skb_header(n, skb);
-out:
- return n;
-}
-
-/**
- * pskb_expand_head - reallocate header of &sk_buff
- * @skb: buffer to reallocate
- * @nhead: room to add at head
- * @ntail: room to add at tail
- * @gfp_mask: allocation priority
- *
- * Expands (or creates identical copy, if &nhead and &ntail are zero)
- * header of skb. &sk_buff itself is not changed. &sk_buff MUST have
- * reference count of 1. Returns zero in the case of success or error,
- * if expansion failed. In the last case, &sk_buff is not changed.
- *
- * All the pointers pointing into skb header may change and must be
- * reloaded after call to this function.
- */
-
-int pskb_expand_head(struct sk_buff *skb, int nhead, int ntail, int gfp_mask)
-{
- int i;
- u8 *data;
- int size = nhead + (skb->end - skb->head) + ntail;
- long off;
-
- if (skb_shared(skb))
- BUG();
-
- size = SKB_DATA_ALIGN(size);
-
- data = kmalloc(size + sizeof(struct skb_shared_info), gfp_mask);
- if (!data)
- goto nodata;
-
- /* Copy only real data... and, alas, header. This should be
- * optimized for the cases when header is void. */
- memcpy(data + nhead, skb->head, skb->tail - skb->head);
- memcpy(data + size, skb->end, sizeof(struct skb_shared_info));
-
- for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
- get_page(skb_shinfo(skb)->frags[i].page);
-
- if (skb_shinfo(skb)->frag_list)
- skb_clone_fraglist(skb);
-
- skb_release_data(skb);
-
- off = (data + nhead) - skb->head;
-
- skb->head = data;
- skb->end = data + size;
- skb->data += off;
- skb->tail += off;
- skb->mac.raw += off;
- skb->h.raw += off;
- skb->nh.raw += off;
- skb->cloned = 0;
- atomic_set(&skb_shinfo(skb)->dataref, 1);
- return 0;
-
-nodata:
- return -ENOMEM;
-}
-
-/* Make private copy of skb with writable head and some headroom */
-
-struct sk_buff *skb_realloc_headroom(struct sk_buff *skb, unsigned int
headroom)
-{
- struct sk_buff *skb2;
- int delta = headroom - skb_headroom(skb);
-
- if (delta <= 0)
- skb2 = pskb_copy(skb, GFP_ATOMIC);
- else {
- skb2 = skb_clone(skb, GFP_ATOMIC);
- if (skb2 && pskb_expand_head(skb2, SKB_DATA_ALIGN(delta), 0,
- GFP_ATOMIC)) {
- kfree_skb(skb2);
- skb2 = NULL;
- }
- }
- return skb2;
-}
-
-
-/**
- * skb_copy_expand - copy and expand sk_buff
- * @skb: buffer to copy
- * @newheadroom: new free bytes at head
- * @newtailroom: new free bytes at tail
- * @gfp_mask: allocation priority
- *
- * Make a copy of both an &sk_buff and its data and while doing so
- * allocate additional space.
- *
- * This is used when the caller wishes to modify the data and needs a
- * private copy of the data to alter as well as more space for new fields.
- * Returns %NULL on failure or the pointer to the buffer
- * on success. The returned buffer has a reference count of 1.
- *
- * You must pass %GFP_ATOMIC as the allocation priority if this function
- * is called from an interrupt.
- *
- * BUG ALERT: ip_summed is not copied. Why does this work? Is it used
- * only by netfilter in the cases when checksum is recalculated? --ANK
- */
-struct sk_buff *skb_copy_expand(const struct sk_buff *skb,
- int newheadroom, int newtailroom, int gfp_mask)
-{
- /*
- * Allocate the copy buffer
- */
- struct sk_buff *n = alloc_skb(newheadroom + skb->len + newtailroom,
- gfp_mask);
- int head_copy_len, head_copy_off;
-
- if (!n)
- return NULL;
-
- skb_reserve(n, newheadroom);
-
- /* Set the tail pointer and length */
- skb_put(n, skb->len);
-
- head_copy_len = skb_headroom(skb);
- head_copy_off = 0;
- if (newheadroom <= head_copy_len)
- head_copy_len = newheadroom;
- else
- head_copy_off = newheadroom - head_copy_len;
-
- /* Copy the linear header and data. */
- if (skb_copy_bits(skb, -head_copy_len, n->head + head_copy_off,
- skb->len + head_copy_len))
- BUG();
-
- copy_skb_header(n, skb);
-
- return n;
-}
-
-/**
- * skb_pad - zero pad the tail of an skb
- * @skb: buffer to pad
- * @pad: space to pad
- *
- * Ensure that a buffer is followed by a padding area that is zero
- * filled. Used by network drivers which may DMA or transfer data
- * beyond the buffer end onto the wire.
- *
- * May return NULL in out of memory cases.
- */
-
-struct sk_buff *skb_pad(struct sk_buff *skb, int pad)
-{
- struct sk_buff *nskb;
-
- /* If the skbuff is non linear tailroom is always zero.. */
- if (skb_tailroom(skb) >= pad) {
- memset(skb->data+skb->len, 0, pad);
- return skb;
- }
-
- nskb = skb_copy_expand(skb, skb_headroom(skb), skb_tailroom(skb) + pad,
GFP_ATOMIC);
- kfree_skb(skb);
- if (nskb)
- memset(nskb->data+nskb->len, 0, pad);
- return nskb;
-}
-
-/* Trims skb to length len. It can change skb pointers, if "realloc" is 1.
- * If realloc==0 and trimming is impossible without change of data,
- * it is BUG().
- */
-
-int ___pskb_trim(struct sk_buff *skb, unsigned int len, int realloc)
-{
- int offset = skb_headlen(skb);
- int nfrags = skb_shinfo(skb)->nr_frags;
- int i;
-
- for (i = 0; i < nfrags; i++) {
- int end = offset + skb_shinfo(skb)->frags[i].size;
- if (end > len) {
- if (skb_cloned(skb)) {
- if (!realloc)
- BUG();
- if (pskb_expand_head(skb, 0, 0, GFP_ATOMIC))
- return -ENOMEM;
- }
- if (len <= offset) {
- put_page(skb_shinfo(skb)->frags[i].page);
- skb_shinfo(skb)->nr_frags--;
- } else {
- skb_shinfo(skb)->frags[i].size = len - offset;
- }
- }
- offset = end;
- }
-
- if (offset < len) {
- skb->data_len -= skb->len - len;
- skb->len = len;
- } else {
- if (len <= skb_headlen(skb)) {
- skb->len = len;
- skb->data_len = 0;
- skb->tail = skb->data + len;
- if (skb_shinfo(skb)->frag_list && !skb_cloned(skb))
- skb_drop_fraglist(skb);
- } else {
- skb->data_len -= skb->len - len;
- skb->len = len;
- }
- }
-
- return 0;
-}
-
-/**
- * __pskb_pull_tail - advance tail of skb header
- * @skb: buffer to reallocate
- * @delta: number of bytes to advance tail
- *
- * The function makes a sense only on a fragmented &sk_buff,
- * it expands header moving its tail forward and copying necessary
- * data from fragmented part.
- *
- * &sk_buff MUST have reference count of 1.
- *
- * Returns %NULL (and &sk_buff does not change) if pull failed
- * or value of new tail of skb in the case of success.
- *
- * All the pointers pointing into skb header may change and must be
- * reloaded after call to this function.
- */
-
-/* Moves tail of skb head forward, copying data from fragmented part,
- * when it is necessary.
- * 1. It may fail due to malloc failure.
- * 2. It may change skb pointers.
- *
- * It is pretty complicated. Luckily, it is called only in exceptional cases.
- */
-unsigned char *__pskb_pull_tail(struct sk_buff *skb, int delta)
-{
- /* If skb has not enough free space at tail, get new one
- * plus 128 bytes for future expansions. If we have enough
- * room at tail, reallocate without expansion only if skb is cloned.
- */
- int i, k, eat = (skb->tail + delta) - skb->end;
-
- if (eat > 0 || skb_cloned(skb)) {
- if (pskb_expand_head(skb, 0, eat > 0 ? eat + 128 : 0,
- GFP_ATOMIC))
- return NULL;
- }
-
- if (skb_copy_bits(skb, skb_headlen(skb), skb->tail, delta))
- BUG();
-
- /* Optimization: no fragments, no reasons to preestimate
- * size of pulled pages. Superb.
- */
- if (!skb_shinfo(skb)->frag_list)
- goto pull_pages;
-
- /* Estimate size of pulled pages. */
- eat = delta;
- for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
- if (skb_shinfo(skb)->frags[i].size >= eat)
- goto pull_pages;
- eat -= skb_shinfo(skb)->frags[i].size;
- }
-
- /* If we need update frag list, we are in troubles.
- * Certainly, it possible to add an offset to skb data,
- * but taking into account that pulling is expected to
- * be very rare operation, it is worth to fight against
- * further bloating skb head and crucify ourselves here instead.
- * Pure masohism, indeed. 8)8)
- */
- if (eat) {
- struct sk_buff *list = skb_shinfo(skb)->frag_list;
- struct sk_buff *clone = NULL;
- struct sk_buff *insp = NULL;
-
- do {
- if (!list)
- BUG();
-
- if (list->len <= eat) {
- /* Eaten as whole. */
- eat -= list->len;
- list = list->next;
- insp = list;
- } else {
- /* Eaten partially. */
-
- if (skb_shared(list)) {
- /* Sucks! We need to fork list. :-( */
- clone = skb_clone(list, GFP_ATOMIC);
- if (!clone)
- return NULL;
- insp = list->next;
- list = clone;
- } else {
- /* This may be pulled without
- * problems. */
- insp = list;
- }
- if (!pskb_pull(list, eat)) {
- if (clone)
- kfree_skb(clone);
- return NULL;
- }
- break;
- }
- } while (eat);
-
- /* Free pulled out fragments. */
- while ((list = skb_shinfo(skb)->frag_list) != insp) {
- skb_shinfo(skb)->frag_list = list->next;
- kfree_skb(list);
- }
- /* And insert new clone at head. */
- if (clone) {
- clone->next = list;
- skb_shinfo(skb)->frag_list = clone;
- }
- }
- /* Success! Now we may commit changes to skb data. */
-
-pull_pages:
- eat = delta;
- k = 0;
- for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
- if (skb_shinfo(skb)->frags[i].size <= eat) {
- put_page(skb_shinfo(skb)->frags[i].page);
- eat -= skb_shinfo(skb)->frags[i].size;
- } else {
- skb_shinfo(skb)->frags[k] = skb_shinfo(skb)->frags[i];
- if (eat) {
- skb_shinfo(skb)->frags[k].page_offset += eat;
- skb_shinfo(skb)->frags[k].size -= eat;
- eat = 0;
- }
- k++;
- }
- }
- skb_shinfo(skb)->nr_frags = k;
-
- skb->tail += delta;
- skb->data_len -= delta;
-
- return skb->tail;
-}
-
-/* Copy some data bits from skb to kernel buffer. */
-
-int skb_copy_bits(const struct sk_buff *skb, int offset, void *to, int len)
-{
- int i, copy;
- int start = skb_headlen(skb);
-
- if (offset > (int)skb->len - len)
- goto fault;
-
- /* Copy header. */
- if ((copy = start - offset) > 0) {
- if (copy > len)
- copy = len;
- memcpy(to, skb->data + offset, copy);
- if ((len -= copy) == 0)
- return 0;
- offset += copy;
- to += copy;
- }
-
- for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
- int end;
-
- BUG_TRAP(start <= offset + len);
-
- end = start + skb_shinfo(skb)->frags[i].size;
- if ((copy = end - offset) > 0) {
- u8 *vaddr;
-
- if (copy > len)
- copy = len;
-
- vaddr = kmap_skb_frag(&skb_shinfo(skb)->frags[i]);
- memcpy(to,
- vaddr + skb_shinfo(skb)->frags[i].page_offset+
- offset - start, copy);
- kunmap_skb_frag(vaddr);
-
- if ((len -= copy) == 0)
- return 0;
- offset += copy;
- to += copy;
- }
- start = end;
- }
-
- if (skb_shinfo(skb)->frag_list) {
- struct sk_buff *list = skb_shinfo(skb)->frag_list;
-
- for (; list; list = list->next) {
- int end;
-
- BUG_TRAP(start <= offset + len);
-
- end = start + list->len;
- if ((copy = end - offset) > 0) {
- if (copy > len)
- copy = len;
- if (skb_copy_bits(list, offset - start,
- to, copy))
- goto fault;
- if ((len -= copy) == 0)
- return 0;
- offset += copy;
- to += copy;
- }
- start = end;
- }
- }
- if (!len)
- return 0;
-
-fault:
- return -EFAULT;
-}
-
-/* Keep iterating until skb_iter_next returns false. */
-void skb_iter_first(const struct sk_buff *skb, struct skb_iter *i)
-{
- i->len = skb_headlen(skb);
- i->data = (unsigned char *)skb->data;
- i->nextfrag = 0;
- i->fraglist = NULL;
-}
-
-int skb_iter_next(const struct sk_buff *skb, struct skb_iter *i)
-{
- /* Unmap previous, if not head fragment. */
- if (i->nextfrag)
- kunmap_skb_frag(i->data);
-
- if (i->fraglist) {
- fraglist:
- /* We're iterating through fraglist. */
- if (i->nextfrag < skb_shinfo(i->fraglist)->nr_frags) {
- i->data = kmap_skb_frag(&skb_shinfo(i->fraglist)
- ->frags[i->nextfrag]);
- i->len = skb_shinfo(i->fraglist)->frags[i->nextfrag]
- .size;
- i->nextfrag++;
- return 1;
- }
- /* Fragments with fragments? Too hard! */
- BUG_ON(skb_shinfo(i->fraglist)->frag_list);
- i->fraglist = i->fraglist->next;
- if (!i->fraglist)
- goto end;
-
- i->len = skb_headlen(i->fraglist);
- i->data = i->fraglist->data;
- i->nextfrag = 0;
- return 1;
- }
-
- if (i->nextfrag < skb_shinfo(skb)->nr_frags) {
- i->data = kmap_skb_frag(&skb_shinfo(skb)->frags[i->nextfrag]);
- i->len = skb_shinfo(skb)->frags[i->nextfrag].size;
- i->nextfrag++;
- return 1;
- }
-
- i->fraglist = skb_shinfo(skb)->frag_list;
- if (i->fraglist)
- goto fraglist;
-
-end:
- /* Bug trap for callers */
- i->data = NULL;
- return 0;
-}
-
-void skb_iter_abort(const struct sk_buff *skb, struct skb_iter *i)
-{
- /* Unmap previous, if not head fragment. */
- if (i->data && i->nextfrag)
- kunmap_skb_frag(i->data);
- /* Bug trap for callers */
- i->data = NULL;
-}
-
-/* Checksum skb data. */
-
-unsigned int skb_checksum(const struct sk_buff *skb, int offset,
- int len, unsigned int csum)
-{
- int start = skb_headlen(skb);
- int i, copy = start - offset;
- int pos = 0;
-
- /* Checksum header. */
- if (copy > 0) {
- if (copy > len)
- copy = len;
- csum = csum_partial(skb->data + offset, copy, csum);
- if ((len -= copy) == 0)
- return csum;
- offset += copy;
- pos = copy;
- }
-
- for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
- int end;
-
- BUG_TRAP(start <= offset + len);
-
- end = start + skb_shinfo(skb)->frags[i].size;
- if ((copy = end - offset) > 0) {
- unsigned int csum2;
- u8 *vaddr;
- skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
-
- if (copy > len)
- copy = len;
- vaddr = kmap_skb_frag(frag);
- csum2 = csum_partial(vaddr + frag->page_offset +
- offset - start, copy, 0);
- kunmap_skb_frag(vaddr);
- csum = csum_block_add(csum, csum2, pos);
- if (!(len -= copy))
- return csum;
- offset += copy;
- pos += copy;
- }
- start = end;
- }
-
- if (skb_shinfo(skb)->frag_list) {
- struct sk_buff *list = skb_shinfo(skb)->frag_list;
-
- for (; list; list = list->next) {
- int end;
-
- BUG_TRAP(start <= offset + len);
-
- end = start + list->len;
- if ((copy = end - offset) > 0) {
- unsigned int csum2;
- if (copy > len)
- copy = len;
- csum2 = skb_checksum(list, offset - start,
- copy, 0);
- csum = csum_block_add(csum, csum2, pos);
- if ((len -= copy) == 0)
- return csum;
- offset += copy;
- pos += copy;
- }
- start = end;
- }
- }
- if (len)
- BUG();
-
- return csum;
-}
-
-/* Both of above in one bottle. */
-
-unsigned int skb_copy_and_csum_bits(const struct sk_buff *skb, int offset,
- u8 *to, int len, unsigned int csum)
-{
- int start = skb_headlen(skb);
- int i, copy = start - offset;
- int pos = 0;
-
- /* Copy header. */
- if (copy > 0) {
- if (copy > len)
- copy = len;
- csum = csum_partial_copy_nocheck(skb->data + offset, to,
- copy, csum);
- if ((len -= copy) == 0)
- return csum;
- offset += copy;
- to += copy;
- pos = copy;
- }
-
- for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
- int end;
-
- BUG_TRAP(start <= offset + len);
-
- end = start + skb_shinfo(skb)->frags[i].size;
- if ((copy = end - offset) > 0) {
- unsigned int csum2;
- u8 *vaddr;
- skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
-
- if (copy > len)
- copy = len;
- vaddr = kmap_skb_frag(frag);
- csum2 = csum_partial_copy_nocheck(vaddr +
- frag->page_offset +
- offset - start, to,
- copy, 0);
- kunmap_skb_frag(vaddr);
- csum = csum_block_add(csum, csum2, pos);
- if (!(len -= copy))
- return csum;
- offset += copy;
- to += copy;
- pos += copy;
- }
- start = end;
- }
-
- if (skb_shinfo(skb)->frag_list) {
- struct sk_buff *list = skb_shinfo(skb)->frag_list;
-
- for (; list; list = list->next) {
- unsigned int csum2;
- int end;
-
- BUG_TRAP(start <= offset + len);
-
- end = start + list->len;
- if ((copy = end - offset) > 0) {
- if (copy > len)
- copy = len;
- csum2 = skb_copy_and_csum_bits(list,
- offset - start,
- to, copy, 0);
- csum = csum_block_add(csum, csum2, pos);
- if ((len -= copy) == 0)
- return csum;
- offset += copy;
- to += copy;
- pos += copy;
- }
- start = end;
- }
- }
- if (len)
- BUG();
- return csum;
-}
-
-void skb_copy_and_csum_dev(const struct sk_buff *skb, u8 *to)
-{
- unsigned int csum;
- long csstart;
-
- if (skb->ip_summed == CHECKSUM_HW)
- csstart = skb->h.raw - skb->data;
- else
- csstart = skb_headlen(skb);
-
- if (csstart > skb_headlen(skb))
- BUG();
-
- memcpy(to, skb->data, csstart);
-
- csum = 0;
- if (csstart != skb->len)
- csum = skb_copy_and_csum_bits(skb, csstart, to + csstart,
- skb->len - csstart, 0);
-
- if (skb->ip_summed == CHECKSUM_HW) {
- long csstuff = csstart + skb->csum;
-
- *((unsigned short *)(to + csstuff)) = csum_fold(csum);
- }
-}
-
-/**
- * skb_dequeue - remove from the head of the queue
- * @list: list to dequeue from
- *
- * Remove the head of the list. The list lock is taken so the function
- * may be used safely with other locking list functions. The head item is
- * returned or %NULL if the list is empty.
- */
-
-struct sk_buff *skb_dequeue(struct sk_buff_head *list)
-{
- unsigned long flags;
- struct sk_buff *result;
-
- spin_lock_irqsave(&list->lock, flags);
- result = __skb_dequeue(list);
- spin_unlock_irqrestore(&list->lock, flags);
- return result;
-}
-
-/**
- * skb_dequeue_tail - remove from the tail of the queue
- * @list: list to dequeue from
- *
- * Remove the tail of the list. The list lock is taken so the function
- * may be used safely with other locking list functions. The tail item is
- * returned or %NULL if the list is empty.
- */
-struct sk_buff *skb_dequeue_tail(struct sk_buff_head *list)
-{
- unsigned long flags;
- struct sk_buff *result;
-
- spin_lock_irqsave(&list->lock, flags);
- result = __skb_dequeue_tail(list);
- spin_unlock_irqrestore(&list->lock, flags);
- return result;
-}
-
-/**
- * skb_queue_purge - empty a list
- * @list: list to empty
- *
- * Delete all buffers on an &sk_buff list. Each buffer is removed from
- * the list and one reference dropped. This function takes the list
- * lock and is atomic with respect to other list locking functions.
- */
-void skb_queue_purge(struct sk_buff_head *list)
-{
- struct sk_buff *skb;
- while ((skb = skb_dequeue(list)) != NULL)
- kfree_skb(skb);
-}
-
-/**
- * skb_queue_head - queue a buffer at the list head
- * @list: list to use
- * @newsk: buffer to queue
- *
- * Queue a buffer at the start of the list. This function takes the
- * list lock and can be used safely with other locking &sk_buff functions
- * safely.
- *
- * A buffer cannot be placed on two lists at the same time.
- */
-void skb_queue_head(struct sk_buff_head *list, struct sk_buff *newsk)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&list->lock, flags);
- __skb_queue_head(list, newsk);
- spin_unlock_irqrestore(&list->lock, flags);
-}
-
-/**
- * skb_queue_tail - queue a buffer at the list tail
- * @list: list to use
- * @newsk: buffer to queue
- *
- * Queue a buffer at the tail of the list. This function takes the
- * list lock and can be used safely with other locking &sk_buff functions
- * safely.
- *
- * A buffer cannot be placed on two lists at the same time.
- */
-void skb_queue_tail(struct sk_buff_head *list, struct sk_buff *newsk)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&list->lock, flags);
- __skb_queue_tail(list, newsk);
- spin_unlock_irqrestore(&list->lock, flags);
-}
-/**
- * skb_unlink - remove a buffer from a list
- * @skb: buffer to remove
- *
- * Place a packet after a given packet in a list. The list locks are taken
- * and this function is atomic with respect to other list locked calls
- *
- * Works even without knowing the list it is sitting on, which can be
- * handy at times. It also means that THE LIST MUST EXIST when you
- * unlink. Thus a list must have its contents unlinked before it is
- * destroyed.
- */
-void skb_unlink(struct sk_buff *skb)
-{
- struct sk_buff_head *list = skb->list;
-
- if (list) {
- unsigned long flags;
-
- spin_lock_irqsave(&list->lock, flags);
- if (skb->list == list)
- __skb_unlink(skb, skb->list);
- spin_unlock_irqrestore(&list->lock, flags);
- }
-}
-
-
-/**
- * skb_append - append a buffer
- * @old: buffer to insert after
- * @newsk: buffer to insert
- *
- * Place a packet after a given packet in a list. The list locks are taken
- * and this function is atomic with respect to other list locked calls.
- * A buffer cannot be placed on two lists at the same time.
- */
-
-void skb_append(struct sk_buff *old, struct sk_buff *newsk)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&old->list->lock, flags);
- __skb_append(old, newsk);
- spin_unlock_irqrestore(&old->list->lock, flags);
-}
-
-
-/**
- * skb_insert - insert a buffer
- * @old: buffer to insert before
- * @newsk: buffer to insert
- *
- * Place a packet before a given packet in a list. The list locks are taken
- * and this function is atomic with respect to other list locked calls
- * A buffer cannot be placed on two lists at the same time.
- */
-
-void skb_insert(struct sk_buff *old, struct sk_buff *newsk)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&old->list->lock, flags);
- __skb_insert(newsk, old->prev, old, old->list);
- spin_unlock_irqrestore(&old->list->lock, flags);
-}
-
-#if 0
-/*
- * Tune the memory allocator for a new MTU size.
- */
-void skb_add_mtu(int mtu)
-{
- /* Must match allocation in alloc_skb */
- mtu = SKB_DATA_ALIGN(mtu) + sizeof(struct skb_shared_info);
-
- kmem_add_cache_size(mtu);
-}
-#endif
-
-static inline void skb_split_inside_header(struct sk_buff *skb,
- struct sk_buff* skb1,
- const u32 len, const int pos)
-{
- int i;
-
- memcpy(skb_put(skb1, pos - len), skb->data + len, pos - len);
-
- /* And move data appendix as is. */
- for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
- skb_shinfo(skb1)->frags[i] = skb_shinfo(skb)->frags[i];
-
- skb_shinfo(skb1)->nr_frags = skb_shinfo(skb)->nr_frags;
- skb_shinfo(skb)->nr_frags = 0;
- skb1->data_len = skb->data_len;
- skb1->len += skb1->data_len;
- skb->data_len = 0;
- skb->len = len;
- skb->tail = skb->data + len;
-}
-
-static inline void skb_split_no_header(struct sk_buff *skb,
- struct sk_buff* skb1,
- const u32 len, int pos)
-{
- int i, k = 0;
- const int nfrags = skb_shinfo(skb)->nr_frags;
-
- skb_shinfo(skb)->nr_frags = 0;
- skb1->len = skb1->data_len = skb->len - len;
- skb->len = len;
- skb->data_len = len - pos;
-
- for (i = 0; i < nfrags; i++) {
- int size = skb_shinfo(skb)->frags[i].size;
-
- if (pos + size > len) {
- skb_shinfo(skb1)->frags[k] = skb_shinfo(skb)->frags[i];
-
- if (pos < len) {
- /* Split frag.
- * We have to variants in this case:
- * 1. Move all the frag to the second
- * part, if it is possible. F.e.
- * this approach is mandatory for TUX,
- * where splitting is expensive.
- * 2. Split is accurately. We make this.
- */
- get_page(skb_shinfo(skb)->frags[i].page);
- skb_shinfo(skb1)->frags[0].page_offset += len -
pos;
- skb_shinfo(skb1)->frags[0].size -= len - pos;
- skb_shinfo(skb)->frags[i].size = len - pos;
- skb_shinfo(skb)->nr_frags++;
- }
- k++;
- } else
- skb_shinfo(skb)->nr_frags++;
- pos += size;
- }
- skb_shinfo(skb1)->nr_frags = k;
-}
-
-/**
- * skb_split - Split fragmented skb to two parts at length len.
- */
-void skb_split(struct sk_buff *skb, struct sk_buff *skb1, const u32 len)
-{
- int pos = skb_headlen(skb);
-
- if (len < pos) /* Split line is inside header. */
- skb_split_inside_header(skb, skb1, len, pos);
- else /* Second chunk has no header, nothing to copy. */
- skb_split_no_header(skb, skb1, len, pos);
-}
-
-void __init skb_init(void)
-{
- skbuff_head_cache = kmem_cache_create("skbuff_head_cache",
- sizeof(struct sk_buff),
- 0,
- SLAB_HWCACHE_ALIGN,
- NULL, NULL);
- if (!skbuff_head_cache)
- panic("cannot create skbuff cache");
-}
-
-EXPORT_SYMBOL(___pskb_trim);
-EXPORT_SYMBOL(__kfree_skb);
-EXPORT_SYMBOL(__pskb_pull_tail);
-EXPORT_SYMBOL(alloc_skb);
-EXPORT_SYMBOL(pskb_copy);
-EXPORT_SYMBOL(pskb_expand_head);
-EXPORT_SYMBOL(skb_checksum);
-EXPORT_SYMBOL(skb_clone);
-EXPORT_SYMBOL(skb_clone_fraglist);
-EXPORT_SYMBOL(skb_copy);
-EXPORT_SYMBOL(skb_copy_and_csum_bits);
-EXPORT_SYMBOL(skb_copy_and_csum_dev);
-EXPORT_SYMBOL(skb_copy_bits);
-EXPORT_SYMBOL(skb_copy_expand);
-EXPORT_SYMBOL(skb_over_panic);
-EXPORT_SYMBOL(skb_pad);
-EXPORT_SYMBOL(skb_realloc_headroom);
-EXPORT_SYMBOL(skb_under_panic);
-EXPORT_SYMBOL(skb_dequeue);
-EXPORT_SYMBOL(skb_dequeue_tail);
-EXPORT_SYMBOL(skb_insert);
-EXPORT_SYMBOL(skb_queue_purge);
-EXPORT_SYMBOL(skb_queue_head);
-EXPORT_SYMBOL(skb_queue_tail);
-EXPORT_SYMBOL(skb_unlink);
-EXPORT_SYMBOL(skb_append);
-EXPORT_SYMBOL(skb_split);
-EXPORT_SYMBOL(skb_iter_first);
-EXPORT_SYMBOL(skb_iter_next);
-EXPORT_SYMBOL(skb_iter_abort);
diff -r d75a502b45eb -r 43e28a2f6037 patches/linux-2.6.11/agpgart.patch
--- a/patches/linux-2.6.11/agpgart.patch Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,437 +0,0 @@
---- linux-2.6.11/drivers/char/agp/agp.h 2005-03-02 07:38:07 +00:00
-+++ linux-2.6.11-agp/drivers/char/agp/agp.h 2005-03-22 11:14:02 +00:00
-@@ -272,6 +272,8 @@
- #define AGP_GENERIC_SIZES_ENTRIES 11
- extern struct aper_size_info_16 agp3_generic_sizes[];
-
-+#define virt_to_gart(x) (phys_to_gart(virt_to_phys(x)))
-+#define gart_to_virt(x) (phys_to_virt(gart_to_phys(x)))
-
- extern int agp_off;
- extern int agp_try_unsupported_boot;
---- linux-2.6.11/drivers/char/agp/ali-agp.c 2005-03-02 07:38:13 +00:00
-+++ linux-2.6.11-agp/drivers/char/agp/ali-agp.c 2005-03-22 11:14:56
+00:00
-@@ -150,7 +150,7 @@
- pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, &temp);
- pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL,
- (((temp & ALI_CACHE_FLUSH_ADDR_MASK) |
-- virt_to_phys(addr)) | ALI_CACHE_FLUSH_EN ));
-+ virt_to_gart(addr)) | ALI_CACHE_FLUSH_EN ));
- return addr;
- }
-
-@@ -174,7 +174,7 @@
- pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, &temp);
- pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL,
- (((temp & ALI_CACHE_FLUSH_ADDR_MASK) |
-- virt_to_phys(addr)) | ALI_CACHE_FLUSH_EN));
-+ virt_to_gart(addr)) | ALI_CACHE_FLUSH_EN));
- agp_generic_destroy_page(addr);
- }
-
---- linux-2.6.11/drivers/char/agp/amd-k7-agp.c 2005-03-02 07:38:33 +00:00
-+++ linux-2.6.11-agp/drivers/char/agp/amd-k7-agp.c 2005-03-22 11:14:56
+00:00
-@@ -43,7 +43,7 @@
-
- SetPageReserved(virt_to_page(page_map->real));
- global_cache_flush();
-- page_map->remapped = ioremap_nocache(virt_to_phys(page_map->real),
-+ page_map->remapped = ioremap_nocache(virt_to_gart(page_map->real),
- PAGE_SIZE);
- if (page_map->remapped == NULL) {
- ClearPageReserved(virt_to_page(page_map->real));
-@@ -154,7 +154,7 @@
-
- agp_bridge->gatt_table_real = (u32 *)page_dir.real;
- agp_bridge->gatt_table = (u32 __iomem *)page_dir.remapped;
-- agp_bridge->gatt_bus_addr = virt_to_phys(page_dir.real);
-+ agp_bridge->gatt_bus_addr = virt_to_gart(page_dir.real);
-
- /* Get the address for the gart region.
- * This is a bus address even on the alpha, b/c its
-@@ -167,7 +167,7 @@
-
- /* Calculate the agp offset */
- for (i = 0; i < value->num_entries / 1024; i++, addr += 0x00400000) {
-- writel(virt_to_phys(amd_irongate_private.gatt_pages[i]->real) |
1,
-+ writel(virt_to_gart(amd_irongate_private.gatt_pages[i]->real) |
1,
- page_dir.remapped+GET_PAGE_DIR_OFF(addr));
- readl(page_dir.remapped+GET_PAGE_DIR_OFF(addr)); /* PCI
Posting. */
- }
---- linux-2.6.11/drivers/char/agp/amd64-agp.c 2005-03-02 07:38:13 +00:00
-+++ linux-2.6.11-agp/drivers/char/agp/amd64-agp.c 2005-03-22 11:14:56
+00:00
-@@ -218,7 +218,7 @@
-
- static int amd_8151_configure(void)
- {
-- unsigned long gatt_bus = virt_to_phys(agp_bridge->gatt_table_real);
-+ unsigned long gatt_bus = virt_to_gart(agp_bridge->gatt_table_real);
-
- /* Configure AGP regs in each x86-64 host bridge. */
- for_each_nb() {
-@@ -590,7 +590,7 @@
- {
- struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
-
-- release_mem_region(virt_to_phys(bridge->gatt_table_real),
-+ release_mem_region(virt_to_gart(bridge->gatt_table_real),
-
amd64_aperture_sizes[bridge->aperture_size_idx].size);
- agp_remove_bridge(bridge);
- agp_put_bridge(bridge);
---- linux-2.6.11/drivers/char/agp/ati-agp.c 2005-03-02 07:38:13 +00:00
-+++ linux-2.6.11-agp/drivers/char/agp/ati-agp.c 2005-03-22 11:14:56
+00:00
-@@ -61,7 +61,7 @@
-
- SetPageReserved(virt_to_page(page_map->real));
- err = map_page_into_agp(virt_to_page(page_map->real));
-- page_map->remapped = ioremap_nocache(virt_to_phys(page_map->real),
-+ page_map->remapped = ioremap_nocache(virt_to_gart(page_map->real),
- PAGE_SIZE);
- if (page_map->remapped == NULL || err) {
- ClearPageReserved(virt_to_page(page_map->real));
---- linux-2.6.11/drivers/char/agp/backend.c 2005-03-02 07:38:13 +00:00
-+++ linux-2.6.11-agp/drivers/char/agp/backend.c 2005-03-22 11:14:56
+00:00
-@@ -142,7 +142,7 @@
- return -ENOMEM;
- }
-
-- bridge->scratch_page_real = virt_to_phys(addr);
-+ bridge->scratch_page_real = virt_to_gart(addr);
- bridge->scratch_page =
- bridge->driver->mask_memory(bridge->scratch_page_real, 0);
- }
-@@ -186,7 +186,7 @@
- err_out:
- if (bridge->driver->needs_scratch_page)
- bridge->driver->agp_destroy_page(
-- phys_to_virt(bridge->scratch_page_real));
-+ gart_to_virt(bridge->scratch_page_real));
- if (got_gatt)
- bridge->driver->free_gatt_table();
- if (got_keylist) {
-@@ -211,7 +211,7 @@
- if (bridge->driver->agp_destroy_page &&
- bridge->driver->needs_scratch_page)
- bridge->driver->agp_destroy_page(
-- phys_to_virt(bridge->scratch_page_real));
-+ gart_to_virt(bridge->scratch_page_real));
- }
-
- /* XXX Kludge alert: agpgart isn't ready for multiple bridges yet */
---- linux-2.6.11/drivers/char/agp/efficeon-agp.c 2005-03-02 07:37:30
+00:00
-+++ linux-2.6.11-agp/drivers/char/agp/efficeon-agp.c 2005-03-22 11:15:17
+00:00
-@@ -219,7 +219,7 @@
-
- efficeon_private.l1_table[index] = page;
-
-- value = __pa(page) | pati | present | index;
-+ value = virt_to_gart(page) | pati | present | index;
-
- pci_write_config_dword(agp_bridge->dev,
- EFFICEON_ATTPAGE, value);
---- linux-2.6.11/drivers/char/agp/generic.c 2005-03-02 07:37:55 +00:00
-+++ linux-2.6.11-agp/drivers/char/agp/generic.c 2005-03-22 11:17:37
+00:00
-@@ -151,7 +151,7 @@
- }
- if (curr->page_count != 0) {
- for (i = 0; i < curr->page_count; i++) {
--
agp_bridge->driver->agp_destroy_page(phys_to_virt(curr->memory[i]));
-+
agp_bridge->driver->agp_destroy_page(gart_to_virt(curr->memory[i]));
- }
- }
- agp_free_key(curr->key);
-@@ -204,7 +204,7 @@
- agp_free_memory(new);
- return NULL;
- }
-- new->memory[i] = virt_to_phys(addr);
-+ new->memory[i] = virt_to_gart(addr);
- new->page_count++;
- }
-
-@@ -697,8 +697,7 @@
- break;
- }
-
-- table = (char *) __get_free_pages(GFP_KERNEL,
-- page_order);
-+ table = alloc_gatt_pages(page_order);
-
- if (table == NULL) {
- i++;
-@@ -729,7 +728,7 @@
- size = ((struct aper_size_info_fixed *) temp)->size;
- page_order = ((struct aper_size_info_fixed *) temp)->page_order;
- num_entries = ((struct aper_size_info_fixed *)
temp)->num_entries;
-- table = (char *) __get_free_pages(GFP_KERNEL, page_order);
-+ table = alloc_gatt_pages(page_order);
- }
-
- if (table == NULL)
-@@ -744,7 +743,7 @@
- agp_gatt_table = (void *)table;
-
- agp_bridge->driver->cache_flush();
-- agp_bridge->gatt_table = ioremap_nocache(virt_to_phys(table),
-+ agp_bridge->gatt_table = ioremap_nocache(virt_to_gart(table),
- (PAGE_SIZE * (1 << page_order)));
- agp_bridge->driver->cache_flush();
-
-@@ -752,11 +751,11 @@
- for (page = virt_to_page(table); page <=
virt_to_page(table_end); page++)
- ClearPageReserved(page);
-
-- free_pages((unsigned long) table, page_order);
-+ free_gatt_pages(table, page_order);
-
- return -ENOMEM;
- }
-- agp_bridge->gatt_bus_addr = virt_to_phys(agp_bridge->gatt_table_real);
-+ agp_bridge->gatt_bus_addr = virt_to_gart(agp_bridge->gatt_table_real);
-
- /* AK: bogus, should encode addresses > 4GB */
- for (i = 0; i < num_entries; i++) {
-@@ -810,7 +809,7 @@
- for (page = virt_to_page(table); page <= virt_to_page(table_end);
page++)
- ClearPageReserved(page);
-
-- free_pages((unsigned long) agp_bridge->gatt_table_real, page_order);
-+ free_gatt_pages(agp_bridge->gatt_table_real, page_order);
-
- agp_gatt_table = NULL;
- agp_bridge->gatt_table = NULL;
---- linux-2.6.11/drivers/char/agp/hp-agp.c 2005-03-02 07:38:19 +00:00
-+++ linux-2.6.11-agp/drivers/char/agp/hp-agp.c 2005-03-22 11:14:56 +00:00
-@@ -110,7 +110,7 @@
- hp->gart_size = HP_ZX1_GART_SIZE;
- hp->gatt_entries = hp->gart_size / hp->io_page_size;
-
-- hp->io_pdir = phys_to_virt(readq(hp->ioc_regs+HP_ZX1_PDIR_BASE));
-+ hp->io_pdir = gart_to_virt(readq(hp->ioc_regs+HP_ZX1_PDIR_BASE));
- hp->gatt = &hp->io_pdir[HP_ZX1_IOVA_TO_PDIR(hp->gart_base)];
-
- if (hp->gatt[0] != HP_ZX1_SBA_IOMMU_COOKIE) {
-@@ -248,7 +248,7 @@
- agp_bridge->mode =
readl(hp->lba_regs+hp->lba_cap_offset+PCI_AGP_STATUS);
-
- if (hp->io_pdir_owner) {
-- writel(virt_to_phys(hp->io_pdir),
hp->ioc_regs+HP_ZX1_PDIR_BASE);
-+ writel(virt_to_gart(hp->io_pdir),
hp->ioc_regs+HP_ZX1_PDIR_BASE);
- readl(hp->ioc_regs+HP_ZX1_PDIR_BASE);
- writel(hp->io_tlb_ps, hp->ioc_regs+HP_ZX1_TCNFG);
- readl(hp->ioc_regs+HP_ZX1_TCNFG);
---- linux-2.6.11/drivers/char/agp/i460-agp.c 2005-03-02 07:38:10 +00:00
-+++ linux-2.6.11-agp/drivers/char/agp/i460-agp.c 2005-03-22 11:14:56
+00:00
-@@ -371,7 +371,7 @@
- }
- memset(lp->alloced_map, 0, map_size);
-
-- lp->paddr = virt_to_phys(lpage);
-+ lp->paddr = virt_to_gart(lpage);
- lp->refcount = 0;
- atomic_add(I460_KPAGES_PER_IOPAGE, &agp_bridge->current_memory_agp);
- return 0;
-@@ -382,7 +382,7 @@
- kfree(lp->alloced_map);
- lp->alloced_map = NULL;
-
-- free_pages((unsigned long) phys_to_virt(lp->paddr), I460_IO_PAGE_SHIFT
- PAGE_SHIFT);
-+ free_pages((unsigned long) gart_to_virt(lp->paddr), I460_IO_PAGE_SHIFT
- PAGE_SHIFT);
- atomic_sub(I460_KPAGES_PER_IOPAGE, &agp_bridge->current_memory_agp);
- }
-
---- linux-2.6.11/drivers/char/agp/intel-agp.c 2005-03-02 07:38:09 +00:00
-+++ linux-2.6.11-agp/drivers/char/agp/intel-agp.c 2005-03-22 11:14:56
+00:00
-@@ -285,7 +285,7 @@
- if (new == NULL)
- return NULL;
-
-- new->memory[0] = virt_to_phys(addr);
-+ new->memory[0] = virt_to_gart(addr);
- if (pg_count == 4) {
- /* kludge to get 4 physical pages for ARGB cursor */
- new->memory[1] = new->memory[0] + PAGE_SIZE;
-@@ -328,10 +328,10 @@
- agp_free_key(curr->key);
- if(curr->type == AGP_PHYS_MEMORY) {
- if (curr->page_count == 4)
-- i8xx_destroy_pages(phys_to_virt(curr->memory[0]));
-+ i8xx_destroy_pages(gart_to_virt(curr->memory[0]));
- else
- agp_bridge->driver->agp_destroy_page(
-- phys_to_virt(curr->memory[0]));
-+ gart_to_virt(curr->memory[0]));
- vfree(curr->memory);
- }
- kfree(curr);
---- linux-2.6.11/drivers/char/agp/intel-mch-agp.c 2005-03-02 07:37:48
+00:00
-+++ linux-2.6.11-agp/drivers/char/agp/intel-mch-agp.c 2005-03-22 11:14:56
+00:00
-@@ -51,7 +51,7 @@
- if (new == NULL)
- return NULL;
-
-- new->memory[0] = virt_to_phys(addr);
-+ new->memory[0] = virt_to_gart(addr);
- new->page_count = 1;
- new->num_scratch_pages = 1;
- new->type = AGP_PHYS_MEMORY;
-@@ -63,7 +63,7 @@
- {
- agp_free_key(curr->key);
- if(curr->type == AGP_PHYS_MEMORY) {
--
agp_bridge->driver->agp_destroy_page(phys_to_virt(curr->memory[0]));
-+
agp_bridge->driver->agp_destroy_page(gart_to_virt(curr->memory[0]));
- vfree(curr->memory);
- }
- kfree(curr);
---- linux-2.6.11/drivers/char/agp/sworks-agp.c 2005-03-02 07:38:37 +00:00
-+++ linux-2.6.11-agp/drivers/char/agp/sworks-agp.c 2005-03-22 11:14:56
+00:00
-@@ -51,7 +51,7 @@
- }
- SetPageReserved(virt_to_page(page_map->real));
- global_cache_flush();
-- page_map->remapped = ioremap_nocache(virt_to_phys(page_map->real),
-+ page_map->remapped = ioremap_nocache(virt_to_gart(page_map->real),
- PAGE_SIZE);
- if (page_map->remapped == NULL) {
- ClearPageReserved(virt_to_page(page_map->real));
-@@ -162,7 +162,7 @@
- /* Create a fake scratch directory */
- for(i = 0; i < 1024; i++) {
- writel(agp_bridge->scratch_page,
serverworks_private.scratch_dir.remapped+i);
-- writel(virt_to_phys(serverworks_private.scratch_dir.real) | 1,
page_dir.remapped+i);
-+ writel(virt_to_gart(serverworks_private.scratch_dir.real) | 1,
page_dir.remapped+i);
- }
-
- retval = serverworks_create_gatt_pages(value->num_entries / 1024);
-@@ -174,7 +174,7 @@
-
- agp_bridge->gatt_table_real = (u32 *)page_dir.real;
- agp_bridge->gatt_table = (u32 __iomem *)page_dir.remapped;
-- agp_bridge->gatt_bus_addr = virt_to_phys(page_dir.real);
-+ agp_bridge->gatt_bus_addr = virt_to_gart(page_dir.real);
-
- /* Get the address for the gart region.
- * This is a bus address even on the alpha, b/c its
-@@ -187,7 +187,7 @@
- /* Calculate the agp offset */
-
- for(i = 0; i < value->num_entries / 1024; i++)
-- writel(virt_to_phys(serverworks_private.gatt_pages[i]->real)|1,
page_dir.remapped+i);
-+ writel(virt_to_gart(serverworks_private.gatt_pages[i]->real)|1,
page_dir.remapped+i);
-
- return 0;
- }
---- linux-2.6.11/drivers/char/agp/uninorth-agp.c 2005-03-02 07:38:09
+00:00
-+++ linux-2.6.11-agp/drivers/char/agp/uninorth-agp.c 2005-03-22 11:14:56
+00:00
-@@ -200,7 +200,7 @@
-
- agp_bridge->gatt_table_real = (u32 *) table;
- agp_bridge->gatt_table = (u32 *)table;
-- agp_bridge->gatt_bus_addr = virt_to_phys(table);
-+ agp_bridge->gatt_bus_addr = virt_to_gart(table);
-
- for (i = 0; i < num_entries; i++) {
- agp_bridge->gatt_table[i] =
---- linux-2.6.11/include/asm-alpha/agp.h 2005-03-02 07:37:39 +00:00
-+++ linux-2.6.11-agp/include/asm-alpha/agp.h 2005-03-22 11:18:34 +00:00
-@@ -10,4 +10,14 @@
- #define flush_agp_mappings()
- #define flush_agp_cache() mb()
-
-+/* Convert a physical address to an address suitable for the GART. */
-+#define phys_to_gart(x) (x)
-+#define gart_to_phys(x) (x)
-+
-+/* GATT allocation. Returns/accepts GATT kernel virtual address. */
-+#define alloc_gatt_pages(order) \
-+ ((char *)__get_free_pages(GFP_KERNEL, (order)))
-+#define free_gatt_pages(table, order) \
-+ free_pages((unsigned long)(table), (order))
-+
- #endif
---- linux-2.6.11/include/asm-i386/agp.h 2005-03-02 07:37:31 +00:00
-+++ linux-2.6.11-agp/include/asm-i386/agp.h 2005-03-22 11:18:39 +00:00
-@@ -21,4 +21,14 @@
- worth it. Would need a page for it. */
- #define flush_agp_cache() asm volatile("wbinvd":::"memory")
-
-+/* Convert a physical address to an address suitable for the GART. */
-+#define phys_to_gart(x) (x)
-+#define gart_to_phys(x) (x)
-+
-+/* GATT allocation. Returns/accepts GATT kernel virtual address. */
-+#define alloc_gatt_pages(order) \
-+ ((char *)__get_free_pages(GFP_KERNEL, (order)))
-+#define free_gatt_pages(table, order) \
-+ free_pages((unsigned long)(table), (order))
-+
- #endif
---- linux-2.6.11/include/asm-ia64/agp.h 2005-03-02 07:38:09 +00:00
-+++ linux-2.6.11-agp/include/asm-ia64/agp.h 2005-03-22 11:18:45 +00:00
-@@ -18,4 +18,14 @@
- #define flush_agp_mappings() /* nothing */
- #define flush_agp_cache() mb()
-
-+/* Convert a physical address to an address suitable for the GART. */
-+#define phys_to_gart(x) (x)
-+#define gart_to_phys(x) (x)
-+
-+/* GATT allocation. Returns/accepts GATT kernel virtual address. */
-+#define alloc_gatt_pages(order) \
-+ ((char *)__get_free_pages(GFP_KERNEL, (order)))
-+#define free_gatt_pages(table, order) \
-+ free_pages((unsigned long)(table), (order))
-+
- #endif /* _ASM_IA64_AGP_H */
---- linux-2.6.11/include/asm-ppc/agp.h 2005-03-02 07:38:08 +00:00
-+++ linux-2.6.11-agp/include/asm-ppc/agp.h 2005-03-22 11:18:52 +00:00
-@@ -10,4 +10,14 @@
- #define flush_agp_mappings()
- #define flush_agp_cache() mb()
-
-+/* Convert a physical address to an address suitable for the GART. */
-+#define phys_to_gart(x) (x)
-+#define gart_to_phys(x) (x)
-+
-+/* GATT allocation. Returns/accepts GATT kernel virtual address. */
-+#define alloc_gatt_pages(order) \
-+ ((char *)__get_free_pages(GFP_KERNEL, (order)))
-+#define free_gatt_pages(table, order) \
-+ free_pages((unsigned long)(table), (order))
-+
- #endif
---- linux-2.6.11/include/asm-sparc64/agp.h 2005-03-02 07:37:48 +00:00
-+++ linux-2.6.11-agp/include/asm-sparc64/agp.h 2005-03-22 11:18:59 +00:00
-@@ -8,4 +8,14 @@
- #define flush_agp_mappings()
- #define flush_agp_cache() mb()
-
-+/* Convert a physical address to an address suitable for the GART. */
-+#define phys_to_gart(x) (x)
-+#define gart_to_phys(x) (x)
-+
-+/* GATT allocation. Returns/accepts GATT kernel virtual address. */
-+#define alloc_gatt_pages(order) \
-+ ((char *)__get_free_pages(GFP_KERNEL, (order)))
-+#define free_gatt_pages(table, order) \
-+ free_pages((unsigned long)(table), (order))
-+
- #endif
---- linux-2.6.11/include/asm-x86_64/agp.h 2005-03-02 07:37:30 +00:00
-+++ linux-2.6.11-agp/include/asm-x86_64/agp.h 2005-03-22 11:18:22 +00:00
-@@ -19,4 +19,14 @@
- worth it. Would need a page for it. */
- #define flush_agp_cache() asm volatile("wbinvd":::"memory")
-
-+/* Convert a physical address to an address suitable for the GART. */
-+#define phys_to_gart(x) (x)
-+#define gart_to_phys(x) (x)
-+
-+/* GATT allocation. Returns/accepts GATT kernel virtual address. */
-+#define alloc_gatt_pages(order) \
-+ ((char *)__get_free_pages(GFP_KERNEL, (order)))
-+#define free_gatt_pages(table, order) \
-+ free_pages((unsigned long)(table), (order))
-+
- #endif
diff -r d75a502b45eb -r 43e28a2f6037
patches/linux-2.6.11/i386-cpu-hotplug-updated-for-mm.patch
--- a/patches/linux-2.6.11/i386-cpu-hotplug-updated-for-mm.patch Fri Jul
15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,656 +0,0 @@
-
-From: Zwane Mwaikambo <zwane@xxxxxxxxxxxxx>
-
-Find attached the i386 cpu hotplug patch updated for Ingo's latest round of
-goodies. In order to avoid dumping cpu hotplug code into kernel/irq/* i
-dropped the cpu_online check in do_IRQ() by modifying fixup_irqs(). The
-difference being that on cpu offline, fixup_irqs() is called before we
-clear the cpu from cpu_online_map and a long delay in order to ensure that
-we never have any queued external interrupts on the APICs. Due to my usual
-test victims being in boxes a continent away this hasn't been tested, but
-i'll cover bug reports (nudge, Nathan! ;)
-
-1) Add CONFIG_HOTPLUG_CPU
-2) disable local APIC timer on dead cpus.
-3) Disable preempt around irq balancing to prevent CPUs going down.
-4) Print irq stats for all possible cpus.
-5) Debugging check for interrupts on offline cpus.
-6) Hacky fixup_irqs() to redirect irqs when cpus go off/online.
-7) play_dead() for offline cpus to spin inside.
-8) Handle offline cpus set in flush_tlb_others().
-9) Grab lock earlier in smp_call_function() to prevent CPUs going down.
-10) Implement __cpu_disable() and __cpu_die().
-11) Enable local interrupts in cpu_enable() after fixup_irqs()
-12) Don't fiddle with NMI on dead cpu, but leave intact on other cpus.
-13) Program IRQ affinity whilst cpu is still in cpu_online_map on offline.
-
-Signed-off-by: Zwane Mwaikambo <zwane@xxxxxxxxxxxxx>
-DESC
-ppc64: fix hotplug cpu
-EDESC
-From: Zwane Mwaikambo <zwane@xxxxxxxxxxx>
-
-I seem to have broken this when I moved the clearing of the dying cpu to
-arch specific code.
-
-Signed-off-by: Zwane Mwaikambo <zwane@xxxxxxxxxxx>
-Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
----
-
- 25-akpm/arch/i386/Kconfig | 9 ++
- 25-akpm/arch/i386/kernel/apic.c | 3
- 25-akpm/arch/i386/kernel/io_apic.c | 2
- 25-akpm/arch/i386/kernel/irq.c | 66 +++++++++++++++++----
- 25-akpm/arch/i386/kernel/msr.c | 2
- 25-akpm/arch/i386/kernel/process.c | 35 +++++++++++
- 25-akpm/arch/i386/kernel/smp.c | 25 +++++---
- 25-akpm/arch/i386/kernel/smpboot.c | 98
++++++++++++++++++++++++++++++--
- 25-akpm/arch/i386/kernel/traps.c | 8 ++
- 25-akpm/arch/ia64/kernel/smpboot.c | 3
- 25-akpm/arch/ppc64/kernel/pSeries_smp.c | 5 +
- 25-akpm/arch/s390/kernel/smp.c | 4 -
- 25-akpm/include/asm-i386/cpu.h | 2
- 25-akpm/include/asm-i386/irq.h | 4 +
- 25-akpm/include/asm-i386/smp.h | 3
- 25-akpm/kernel/cpu.c | 14 +---
- arch/ppc64/kernel/smp.c | 0
- 17 files changed, 242 insertions(+), 41 deletions(-)
-
-diff -puN arch/i386/Kconfig~i386-cpu-hotplug-updated-for-mm arch/i386/Kconfig
---- 25/arch/i386/Kconfig~i386-cpu-hotplug-updated-for-mm 2005-02-23
02:20:06.000000000 -0800
-+++ 25-akpm/arch/i386/Kconfig 2005-02-23 02:20:06.000000000 -0800
-@@ -1205,6 +1205,15 @@ config SCx200
- This support is also available as a module. If compiled as a
- module, it will be called scx200.
-
-+config HOTPLUG_CPU
-+ bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
-+ depends on SMP && HOTPLUG && EXPERIMENTAL
-+ ---help---
-+ Say Y here to experiment with turning CPUs off and on. CPUs
-+ can be controlled through /sys/devices/system/cpu.
-+
-+ Say N.
-+
- source "drivers/pcmcia/Kconfig"
-
- source "drivers/pci/hotplug/Kconfig"
-diff -puN arch/i386/kernel/apic.c~i386-cpu-hotplug-updated-for-mm
arch/i386/kernel/apic.c
---- 25/arch/i386/kernel/apic.c~i386-cpu-hotplug-updated-for-mm 2005-02-23
02:20:06.000000000 -0800
-+++ 25-akpm/arch/i386/kernel/apic.c 2005-02-23 02:20:06.000000000 -0800
-@@ -26,6 +26,7 @@
- #include <linux/mc146818rtc.h>
- #include <linux/kernel_stat.h>
- #include <linux/sysdev.h>
-+#include <linux/cpu.h>
-
- #include <asm/atomic.h>
- #include <asm/smp.h>
-@@ -1048,7 +1049,7 @@ void __init setup_secondary_APIC_clock(v
- setup_APIC_timer(calibration_result);
- }
-
--void __init disable_APIC_timer(void)
-+void __devinit disable_APIC_timer(void)
- {
- if (using_apic_timer) {
- unsigned long v;
-diff -puN arch/i386/kernel/io_apic.c~i386-cpu-hotplug-updated-for-mm
arch/i386/kernel/io_apic.c
---- 25/arch/i386/kernel/io_apic.c~i386-cpu-hotplug-updated-for-mm
2005-02-23 02:20:06.000000000 -0800
-+++ 25-akpm/arch/i386/kernel/io_apic.c 2005-02-23 02:20:06.000000000 -0800
-@@ -576,9 +576,11 @@ static int balanced_irq(void *unused)
- try_to_freeze(PF_FREEZE);
- if (time_after(jiffies,
- prev_balance_time+balanced_irq_interval)) {
-+ preempt_disable();
- do_irq_balance();
- prev_balance_time = jiffies;
- time_remaining = balanced_irq_interval;
-+ preempt_enable();
- }
- }
- return 0;
-diff -puN arch/i386/kernel/irq.c~i386-cpu-hotplug-updated-for-mm
arch/i386/kernel/irq.c
---- 25/arch/i386/kernel/irq.c~i386-cpu-hotplug-updated-for-mm 2005-02-23
02:20:06.000000000 -0800
-+++ 25-akpm/arch/i386/kernel/irq.c 2005-02-23 02:20:06.000000000 -0800
-@@ -15,6 +15,9 @@
- #include <linux/seq_file.h>
- #include <linux/interrupt.h>
- #include <linux/kernel_stat.h>
-+#include <linux/notifier.h>
-+#include <linux/cpu.h>
-+#include <linux/delay.h>
-
- #ifndef CONFIG_X86_LOCAL_APIC
- /*
-@@ -209,9 +212,8 @@ int show_interrupts(struct seq_file *p,
-
- if (i == 0) {
- seq_printf(p, " ");
-- for (j=0; j<NR_CPUS; j++)
-- if (cpu_online(j))
-- seq_printf(p, "CPU%d ",j);
-+ for_each_cpu(j)
-+ seq_printf(p, "CPU%d ",j);
- seq_putc(p, '\n');
- }
-
-@@ -224,9 +226,8 @@ int show_interrupts(struct seq_file *p,
- #ifndef CONFIG_SMP
- seq_printf(p, "%10u ", kstat_irqs(i));
- #else
-- for (j = 0; j < NR_CPUS; j++)
-- if (cpu_online(j))
-- seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
-+ for_each_cpu(j)
-+ seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
- #endif
- seq_printf(p, " %14s", irq_desc[i].handler->typename);
- seq_printf(p, " %s", action->name);
-@@ -239,16 +240,13 @@ skip:
- spin_unlock_irqrestore(&irq_desc[i].lock, flags);
- } else if (i == NR_IRQS) {
- seq_printf(p, "NMI: ");
-- for (j = 0; j < NR_CPUS; j++)
-- if (cpu_online(j))
-- seq_printf(p, "%10u ", nmi_count(j));
-+ for_each_cpu(j)
-+ seq_printf(p, "%10u ", nmi_count(j));
- seq_putc(p, '\n');
- #ifdef CONFIG_X86_LOCAL_APIC
- seq_printf(p, "LOC: ");
-- for (j = 0; j < NR_CPUS; j++)
-- if (cpu_online(j))
-- seq_printf(p, "%10u ",
-- irq_stat[j].apic_timer_irqs);
-+ for_each_cpu(j)
-+ seq_printf(p, "%10u ", irq_stat[j].apic_timer_irqs);
- seq_putc(p, '\n');
- #endif
- seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
-@@ -258,3 +256,45 @@ skip:
- }
- return 0;
- }
-+
-+#ifdef CONFIG_HOTPLUG_CPU
-+#include <mach_apic.h>
-+
-+void fixup_irqs(cpumask_t map)
-+{
-+ unsigned int irq;
-+ static int warned;
-+
-+ for (irq = 0; irq < NR_IRQS; irq++) {
-+ cpumask_t mask;
-+ if (irq == 2)
-+ continue;
-+
-+ cpus_and(mask, irq_affinity[irq], map);
-+ if (any_online_cpu(mask) == NR_CPUS) {
-+ printk("Breaking affinity for irq %i\n", irq);
-+ mask = map;
-+ }
-+ if (irq_desc[irq].handler->set_affinity)
-+ irq_desc[irq].handler->set_affinity(irq, mask);
-+ else if (irq_desc[irq].action && !(warned++))
-+ printk("Cannot set affinity for irq %i\n", irq);
-+ }
-+
-+#if 0
-+ barrier();
-+ /* Ingo Molnar says: "after the IO-APIC masks have been redirected
-+ [note the nop - the interrupt-enable boundary on x86 is two
-+ instructions from sti] - to flush out pending hardirqs and
-+ IPIs. After this point nothing is supposed to reach this CPU." */
-+ __asm__ __volatile__("sti; nop; cli");
-+ barrier();
-+#else
-+ /* That doesn't seem sufficient. Give it 1ms. */
-+ local_irq_enable();
-+ mdelay(1);
-+ local_irq_disable();
-+#endif
-+}
-+#endif
-+
-diff -puN arch/i386/kernel/msr.c~i386-cpu-hotplug-updated-for-mm
arch/i386/kernel/msr.c
---- 25/arch/i386/kernel/msr.c~i386-cpu-hotplug-updated-for-mm 2005-02-23
02:20:06.000000000 -0800
-+++ 25-akpm/arch/i386/kernel/msr.c 2005-02-23 02:20:06.000000000 -0800
-@@ -260,7 +260,7 @@ static struct file_operations msr_fops =
- .open = msr_open,
- };
-
--static int msr_class_simple_device_add(int i)
-+static int __devinit msr_class_simple_device_add(int i)
- {
- int err = 0;
- struct class_device *class_err;
-diff -puN arch/i386/kernel/process.c~i386-cpu-hotplug-updated-for-mm
arch/i386/kernel/process.c
---- 25/arch/i386/kernel/process.c~i386-cpu-hotplug-updated-for-mm
2005-02-23 02:20:06.000000000 -0800
-+++ 25-akpm/arch/i386/kernel/process.c 2005-02-23 02:20:06.000000000 -0800
-@@ -13,6 +13,7 @@
-
- #include <stdarg.h>
-
-+#include <linux/cpu.h>
- #include <linux/errno.h>
- #include <linux/sched.h>
- #include <linux/fs.h>
-@@ -55,6 +56,9 @@
- #include <linux/irq.h>
- #include <linux/err.h>
-
-+#include <asm/tlbflush.h>
-+#include <asm/cpu.h>
-+
- asmlinkage void ret_from_fork(void) __asm__("ret_from_fork");
-
- int hlt_counter;
-@@ -139,6 +143,34 @@ static void poll_idle (void)
- }
- }
-
-+#ifdef CONFIG_HOTPLUG_CPU
-+#include <asm/nmi.h>
-+/* We don't actually take CPU down, just spin without interrupts. */
-+static inline void play_dead(void)
-+{
-+ /* Ack it */
-+ __get_cpu_var(cpu_state) = CPU_DEAD;
-+
-+ /* We shouldn't have to disable interrupts while dead, but
-+ * some interrupts just don't seem to go away, and this makes
-+ * it "work" for testing purposes. */
-+ /* Death loop */
-+ while (__get_cpu_var(cpu_state) != CPU_UP_PREPARE)
-+ cpu_relax();
-+
-+ local_irq_disable();
-+ __flush_tlb_all();
-+ cpu_set(smp_processor_id(), cpu_online_map);
-+ enable_APIC_timer();
-+ local_irq_enable();
-+}
-+#else
-+static inline void play_dead(void)
-+{
-+ BUG();
-+}
-+#endif /* CONFIG_HOTPLUG_CPU */
-+
- /*
- * The idle thread. There's no useful work to be
- * done, so just try to conserve power and have a
-@@ -162,6 +194,9 @@ void cpu_idle (void)
- if (!idle)
- idle = default_idle;
-
-+ if (cpu_is_offline(cpu))
-+ play_dead();
-+
- irq_stat[cpu].idle_timestamp = jiffies;
- idle();
- }
-diff -puN arch/i386/kernel/smpboot.c~i386-cpu-hotplug-updated-for-mm
arch/i386/kernel/smpboot.c
---- 25/arch/i386/kernel/smpboot.c~i386-cpu-hotplug-updated-for-mm
2005-02-23 02:20:06.000000000 -0800
-+++ 25-akpm/arch/i386/kernel/smpboot.c 2005-02-23 02:20:06.000000000 -0800
-@@ -44,6 +44,9 @@
- #include <linux/smp_lock.h>
- #include <linux/irq.h>
- #include <linux/bootmem.h>
-+#include <linux/notifier.h>
-+#include <linux/cpu.h>
-+#include <linux/percpu.h>
-
- #include <linux/delay.h>
- #include <linux/mc146818rtc.h>
-@@ -89,6 +92,9 @@ extern unsigned char trampoline_end [];
- static unsigned char *trampoline_base;
- static int trampoline_exec;
-
-+/* State of each CPU. */
-+DEFINE_PER_CPU(int, cpu_state) = { 0 };
-+
- /*
- * Currently trivial. Write the real->protected mode
- * bootstrap into the page concerned. The caller
-@@ -1095,6 +1101,9 @@ static void __init smp_boot_cpus(unsigne
- who understands all this stuff should rewrite it properly. --RR 15/Jul/02
*/
- void __init smp_prepare_cpus(unsigned int max_cpus)
- {
-+ smp_commenced_mask = cpumask_of_cpu(0);
-+ cpu_callin_map = cpumask_of_cpu(0);
-+ mb();
- smp_boot_cpus(max_cpus);
- }
-
-@@ -1104,20 +1113,99 @@ void __devinit smp_prepare_boot_cpu(void
- cpu_set(smp_processor_id(), cpu_callout_map);
- }
-
--int __devinit __cpu_up(unsigned int cpu)
-+#ifdef CONFIG_HOTPLUG_CPU
-+
-+/* must be called with the cpucontrol mutex held */
-+static int __devinit cpu_enable(unsigned int cpu)
- {
-- /* This only works at boot for x86. See "rewrite" above. */
-- if (cpu_isset(cpu, smp_commenced_mask)) {
-- local_irq_enable();
-- return -ENOSYS;
-+ /* get the target out of its holding state */
-+ per_cpu(cpu_state, cpu) = CPU_UP_PREPARE;
-+ wmb();
-+
-+ /* wait for the processor to ack it. timeout? */
-+ while (!cpu_online(cpu))
-+ cpu_relax();
-+
-+ fixup_irqs(cpu_online_map);
-+ /* counter the disable in fixup_irqs() */
-+ local_irq_enable();
-+ return 0;
-+}
-+
-+int __cpu_disable(void)
-+{
-+ cpumask_t map = cpu_online_map;
-+ int cpu = smp_processor_id();
-+
-+ /*
-+ * Perhaps use cpufreq to drop frequency, but that could go
-+ * into generic code.
-+ *
-+ * We won't take down the boot processor on i386 due to some
-+ * interrupts only being able to be serviced by the BSP.
-+ * Especially so if we're not using an IOAPIC -zwane
-+ */
-+ if (cpu == 0)
-+ return -EBUSY;
-+
-+ /* We enable the timer again on the exit path of the death loop */
-+ disable_APIC_timer();
-+ /* Allow any queued timer interrupts to get serviced */
-+ local_irq_enable();
-+ mdelay(1);
-+ local_irq_disable();
-+
-+ cpu_clear(cpu, map);
-+ fixup_irqs(map);
-+ /* It's now safe to remove this processor from the online map */
-+ cpu_clear(cpu, cpu_online_map);
-+ return 0;
-+}
-+
-+void __cpu_die(unsigned int cpu)
-+{
-+ /* We don't do anything here: idle task is faking death itself. */
-+ unsigned int i;
-+
-+ for (i = 0; i < 10; i++) {
-+ /* They ack this in play_dead by setting CPU_DEAD */
-+ if (per_cpu(cpu_state, cpu) == CPU_DEAD)
-+ return;
-+ current->state = TASK_UNINTERRUPTIBLE;
-+ schedule_timeout(HZ/10);
- }
-+ printk(KERN_ERR "CPU %u didn't die...\n", cpu);
-+}
-+#else /* ... !CONFIG_HOTPLUG_CPU */
-+int __cpu_disable(void)
-+{
-+ return -ENOSYS;
-+}
-
-+void __cpu_die(unsigned int cpu)
-+{
-+ /* We said "no" in __cpu_disable */
-+ BUG();
-+}
-+#endif /* CONFIG_HOTPLUG_CPU */
-+
-+int __devinit __cpu_up(unsigned int cpu)
-+{
- /* In case one didn't come up */
- if (!cpu_isset(cpu, cpu_callin_map)) {
-+ printk(KERN_DEBUG "skipping cpu%d, didn't come online\n", cpu);
- local_irq_enable();
- return -EIO;
- }
-
-+#ifdef CONFIG_HOTPLUG_CPU
-+ /* Already up, and in cpu_quiescent now? */
-+ if (cpu_isset(cpu, smp_commenced_mask)) {
-+ cpu_enable(cpu);
-+ return 0;
-+ }
-+#endif
-+
- local_irq_enable();
- /* Unleash the CPU! */
- cpu_set(cpu, smp_commenced_mask);
-diff -puN arch/i386/kernel/smp.c~i386-cpu-hotplug-updated-for-mm
arch/i386/kernel/smp.c
---- 25/arch/i386/kernel/smp.c~i386-cpu-hotplug-updated-for-mm 2005-02-23
02:20:06.000000000 -0800
-+++ 25-akpm/arch/i386/kernel/smp.c 2005-02-23 02:20:06.000000000 -0800
-@@ -19,6 +19,7 @@
- #include <linux/mc146818rtc.h>
- #include <linux/cache.h>
- #include <linux/interrupt.h>
-+#include <linux/cpu.h>
-
- #include <asm/mtrr.h>
- #include <asm/tlbflush.h>
-@@ -163,7 +164,7 @@ void send_IPI_mask_bitmask(cpumask_t cpu
- unsigned long flags;
-
- local_irq_save(flags);
--
-+ WARN_ON(mask & ~cpus_addr(cpu_online_map)[0]);
- /*
- * Wait for idle.
- */
-@@ -345,21 +346,21 @@ out:
- static void flush_tlb_others(cpumask_t cpumask, struct mm_struct *mm,
- unsigned long va)
- {
-- cpumask_t tmp;
- /*
- * A couple of (to be removed) sanity checks:
- *
-- * - we do not send IPIs to not-yet booted CPUs.
- * - current CPU must not be in mask
- * - mask must exist :)
- */
- BUG_ON(cpus_empty(cpumask));
--
-- cpus_and(tmp, cpumask, cpu_online_map);
-- BUG_ON(!cpus_equal(cpumask, tmp));
- BUG_ON(cpu_isset(smp_processor_id(), cpumask));
- BUG_ON(!mm);
-
-+ /* If a CPU which we ran on has gone down, OK. */
-+ cpus_and(cpumask, cpumask, cpu_online_map);
-+ if (cpus_empty(cpumask))
-+ return;
-+
- /*
- * i'm not happy about this global shared spinlock in the
- * MM hot path, but we'll see how contended it is.
-@@ -484,6 +485,7 @@ void smp_send_nmi_allbutself(void)
- */
- void smp_send_reschedule(int cpu)
- {
-+ WARN_ON(cpu_is_offline(cpu));
- send_IPI_mask(cpumask_of_cpu(cpu), RESCHEDULE_VECTOR);
- }
-
-@@ -524,10 +526,16 @@ int smp_call_function (void (*func) (voi
- */
- {
- struct call_data_struct data;
-- int cpus = num_online_cpus()-1;
-+ int cpus;
-
-- if (!cpus)
-+ /* Holding any lock stops cpus from going down. */
-+ spin_lock(&call_lock);
-+ cpus = num_online_cpus()-1;
-+
-+ if (!cpus) {
-+ spin_unlock(&call_lock);
- return 0;
-+ }
-
- /* Can deadlock when called with interrupts disabled */
- WARN_ON(irqs_disabled());
-@@ -539,7 +547,6 @@ int smp_call_function (void (*func) (voi
- if (wait)
- atomic_set(&data.finished, 0);
-
-- spin_lock(&call_lock);
- call_data = &data;
- mb();
-
-diff -puN arch/i386/kernel/traps.c~i386-cpu-hotplug-updated-for-mm
arch/i386/kernel/traps.c
---- 25/arch/i386/kernel/traps.c~i386-cpu-hotplug-updated-for-mm
2005-02-23 02:20:06.000000000 -0800
-+++ 25-akpm/arch/i386/kernel/traps.c 2005-02-23 02:20:06.000000000 -0800
-@@ -669,6 +669,14 @@ fastcall void do_nmi(struct pt_regs * re
- nmi_enter();
-
- cpu = smp_processor_id();
-+
-+#ifdef CONFIG_HOTPLUG_CPU
-+ if (!cpu_online(cpu)) {
-+ nmi_exit();
-+ return;
-+ }
-+#endif
-+
- ++nmi_count(cpu);
-
- if (!nmi_callback(regs, cpu))
-diff -puN arch/ia64/kernel/smpboot.c~i386-cpu-hotplug-updated-for-mm
arch/ia64/kernel/smpboot.c
---- 25/arch/ia64/kernel/smpboot.c~i386-cpu-hotplug-updated-for-mm
2005-02-23 02:20:06.000000000 -0800
-+++ 25-akpm/arch/ia64/kernel/smpboot.c 2005-02-23 02:20:06.000000000 -0800
-@@ -590,9 +590,10 @@ int __cpu_disable(void)
- if (cpu == 0)
- return -EBUSY;
-
-+ cpu_clear(cpu, cpu_online_map);
- fixup_irqs();
- local_flush_tlb_all();
-- printk ("Disabled cpu %u\n", smp_processor_id());
-+ printk("Disabled cpu %u\n", cpu);
- return 0;
- }
-
-diff -puN arch/ppc64/kernel/smp.c~i386-cpu-hotplug-updated-for-mm
arch/ppc64/kernel/smp.c
-diff -puN arch/s390/kernel/smp.c~i386-cpu-hotplug-updated-for-mm
arch/s390/kernel/smp.c
---- 25/arch/s390/kernel/smp.c~i386-cpu-hotplug-updated-for-mm 2005-02-23
02:20:06.000000000 -0800
-+++ 25-akpm/arch/s390/kernel/smp.c 2005-02-23 02:20:06.000000000 -0800
-@@ -679,12 +679,14 @@ __cpu_disable(void)
- {
- unsigned long flags;
- ec_creg_mask_parms cr_parms;
-+ int cpu = smp_processor_id();
-
- spin_lock_irqsave(&smp_reserve_lock, flags);
-- if (smp_cpu_reserved[smp_processor_id()] != 0) {
-+ if (smp_cpu_reserved[cpu] != 0) {
- spin_unlock_irqrestore(&smp_reserve_lock, flags);
- return -EBUSY;
- }
-+ cpu_clear(cpu, cpu_online_map);
-
- #ifdef CONFIG_PFAULT
- /* Disable pfault pseudo page faults on this cpu. */
-diff -puN include/asm-i386/cpu.h~i386-cpu-hotplug-updated-for-mm
include/asm-i386/cpu.h
---- 25/include/asm-i386/cpu.h~i386-cpu-hotplug-updated-for-mm 2005-02-23
02:20:06.000000000 -0800
-+++ 25-akpm/include/asm-i386/cpu.h 2005-02-23 02:20:06.000000000 -0800
-@@ -5,6 +5,7 @@
- #include <linux/cpu.h>
- #include <linux/topology.h>
- #include <linux/nodemask.h>
-+#include <linux/percpu.h>
-
- #include <asm/node.h>
-
-@@ -17,4 +18,5 @@ extern int arch_register_cpu(int num);
- extern void arch_unregister_cpu(int);
- #endif
-
-+DECLARE_PER_CPU(int, cpu_state);
- #endif /* _ASM_I386_CPU_H_ */
-diff -puN include/asm-i386/irq.h~i386-cpu-hotplug-updated-for-mm
include/asm-i386/irq.h
---- 25/include/asm-i386/irq.h~i386-cpu-hotplug-updated-for-mm 2005-02-23
02:20:06.000000000 -0800
-+++ 25-akpm/include/asm-i386/irq.h 2005-02-23 02:20:06.000000000 -0800
-@@ -38,4 +38,8 @@ extern void release_vm86_irqs(struct tas
- extern int irqbalance_disable(char *str);
- #endif
-
-+#ifdef CONFIG_HOTPLUG_CPU
-+extern void fixup_irqs(cpumask_t map);
-+#endif
-+
- #endif /* _ASM_IRQ_H */
-diff -puN include/asm-i386/smp.h~i386-cpu-hotplug-updated-for-mm
include/asm-i386/smp.h
---- 25/include/asm-i386/smp.h~i386-cpu-hotplug-updated-for-mm 2005-02-23
02:20:06.000000000 -0800
-+++ 25-akpm/include/asm-i386/smp.h 2005-02-23 02:20:06.000000000 -0800
-@@ -85,6 +85,9 @@ static __inline int logical_smp_processo
- }
-
- #endif
-+
-+extern int __cpu_disable(void);
-+extern void __cpu_die(unsigned int cpu);
- #endif /* !__ASSEMBLY__ */
-
- #define NO_PROC_ID 0xFF /* No processor magic marker */
-diff -puN kernel/cpu.c~i386-cpu-hotplug-updated-for-mm kernel/cpu.c
---- 25/kernel/cpu.c~i386-cpu-hotplug-updated-for-mm 2005-02-23
02:20:06.000000000 -0800
-+++ 25-akpm/kernel/cpu.c 2005-02-23 02:20:06.000000000 -0800
-@@ -63,19 +63,15 @@ static int take_cpu_down(void *unused)
- {
- int err;
-
-- /* Take offline: makes arch_cpu_down somewhat easier. */
-- cpu_clear(smp_processor_id(), cpu_online_map);
--
- /* Ensure this CPU doesn't handle any more interrupts. */
- err = __cpu_disable();
- if (err < 0)
-- cpu_set(smp_processor_id(), cpu_online_map);
-- else
-- /* Force idle task to run as soon as we yield: it should
-- immediately notice cpu is offline and die quickly. */
-- sched_idle_next();
-+ return err;
-
-- return err;
-+ /* Force idle task to run as soon as we yield: it should
-+ immediately notice cpu is offline and die quickly. */
-+ sched_idle_next();
-+ return 0;
- }
-
- int cpu_down(unsigned int cpu)
-diff -puN arch/ppc64/kernel/pSeries_smp.c~i386-cpu-hotplug-updated-for-mm
arch/ppc64/kernel/pSeries_smp.c
---- 25/arch/ppc64/kernel/pSeries_smp.c~i386-cpu-hotplug-updated-for-mm
2005-02-23 02:20:08.000000000 -0800
-+++ 25-akpm/arch/ppc64/kernel/pSeries_smp.c 2005-02-23 02:20:08.000000000
-0800
-@@ -86,10 +86,13 @@ static int query_cpu_stopped(unsigned in
-
- int pSeries_cpu_disable(void)
- {
-+ int cpu = smp_processor_id();
-+
-+ cpu_clear(cpu, cpu_online_map);
- systemcfg->processorCount--;
-
- /*fix boot_cpuid here*/
-- if (smp_processor_id() == boot_cpuid)
-+ if (cpu == boot_cpuid)
- boot_cpuid = any_online_cpu(cpu_online_map);
-
- /* FIXME: abstract this to not be platform specific later on */
-_
diff -r d75a502b45eb -r 43e28a2f6037 patches/linux-2.6.11/iomap.patch
--- a/patches/linux-2.6.11/iomap.patch Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,120 +0,0 @@
-diff -ur linux-2.6.11/drivers/char/agp/frontend.c
linux-2.6.11-io/drivers/char/agp/frontend.c
---- linux-2.6.11/drivers/char/agp/frontend.c 2005-03-02 07:37:49.000000000
+0000
-+++ linux-2.6.11-io/drivers/char/agp/frontend.c 2005-03-15
17:38:30.000000000 +0000
-@@ -627,7 +627,7 @@
- DBG("client vm_ops=%p", kerninfo.vm_ops);
- if (kerninfo.vm_ops) {
- vma->vm_ops = kerninfo.vm_ops;
-- } else if (remap_pfn_range(vma, vma->vm_start,
-+ } else if (io_remap_pfn_range(vma, vma->vm_start,
- (kerninfo.aper_base + offset) >> PAGE_SHIFT,
- size, vma->vm_page_prot)) {
- goto out_again;
-@@ -643,7 +643,7 @@
- DBG("controller vm_ops=%p", kerninfo.vm_ops);
- if (kerninfo.vm_ops) {
- vma->vm_ops = kerninfo.vm_ops;
-- } else if (remap_pfn_range(vma, vma->vm_start,
-+ } else if (io_remap_pfn_range(vma, vma->vm_start,
- kerninfo.aper_base >> PAGE_SHIFT,
- size, vma->vm_page_prot)) {
- goto out_again;
-diff -ur linux-2.6.11/drivers/char/drm/drm_vm.c
linux-2.6.11-io/drivers/char/drm/drm_vm.c
---- linux-2.6.11/drivers/char/drm/drm_vm.c 2005-03-02 07:38:33.000000000
+0000
-+++ linux-2.6.11-io/drivers/char/drm/drm_vm.c 2005-03-15 17:43:26.000000000
+0000
-@@ -630,7 +630,7 @@
- vma->vm_end - vma->vm_start,
- vma->vm_page_prot, 0))
- #else
-- if (remap_pfn_range(DRM_RPR_ARG(vma) vma->vm_start,
-+ if (io_remap_pfn_range(vma, vma->vm_start,
- (VM_OFFSET(vma) + offset) >> PAGE_SHIFT,
- vma->vm_end - vma->vm_start,
- vma->vm_page_prot))
-diff -ur linux-2.6.11/drivers/char/drm/i810_dma.c
linux-2.6.11-io/drivers/char/drm/i810_dma.c
---- linux-2.6.11/drivers/char/drm/i810_dma.c 2005-03-02 07:37:55.000000000
+0000
-+++ linux-2.6.11-io/drivers/char/drm/i810_dma.c 2005-03-15
17:53:36.000000000 +0000
-@@ -139,7 +139,7 @@
- buf_priv->currently_mapped = I810_BUF_MAPPED;
- unlock_kernel();
-
-- if (remap_pfn_range(DRM_RPR_ARG(vma) vma->vm_start,
-+ if (io_remap_pfn_range(vma, vma->vm_start,
- VM_OFFSET(vma) >> PAGE_SHIFT,
- vma->vm_end - vma->vm_start,
- vma->vm_page_prot)) return -EAGAIN;
-diff -ur linux-2.6.11/drivers/char/drm/i830_dma.c
linux-2.6.11-io/drivers/char/drm/i830_dma.c
---- linux-2.6.11/drivers/char/drm/i830_dma.c 2005-03-02 07:37:48.000000000
+0000
-+++ linux-2.6.11-io/drivers/char/drm/i830_dma.c 2005-03-15
17:53:46.000000000 +0000
-@@ -157,7 +157,7 @@
- buf_priv->currently_mapped = I830_BUF_MAPPED;
- unlock_kernel();
-
-- if (remap_pfn_range(DRM_RPR_ARG(vma) vma->vm_start,
-+ if (io_remap_pfn_range(vma, vma->vm_start,
- VM_OFFSET(vma) >> PAGE_SHIFT,
- vma->vm_end - vma->vm_start,
- vma->vm_page_prot)) return -EAGAIN;
-diff -ur linux-2.6.11/drivers/char/hpet.c linux-2.6.11-io/drivers/char/hpet.c
---- linux-2.6.11/drivers/char/hpet.c 2005-03-02 07:38:10.000000000 +0000
-+++ linux-2.6.11-io/drivers/char/hpet.c 2005-03-15 17:37:22.000000000
+0000
-@@ -76,6 +76,7 @@
- struct hpets {
- struct hpets *hp_next;
- struct hpet __iomem *hp_hpet;
-+ unsigned long hp_hpet_phys;
- struct time_interpolator *hp_interpolator;
- unsigned long hp_period;
- unsigned long hp_delta;
-@@ -265,7 +266,7 @@
- return -EINVAL;
-
- devp = file->private_data;
-- addr = (unsigned long)devp->hd_hpet;
-+ addr = devp->hd_hpets->hp_hpet_phys;
-
- if (addr & (PAGE_SIZE - 1))
- return -ENOSYS;
-@@ -274,7 +275,7 @@
- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
- addr = __pa(addr);
-
-- if (remap_pfn_range(vma, vma->vm_start, addr >> PAGE_SHIFT,
-+ if (io_remap_pfn_range(vma, vma->vm_start, addr >> PAGE_SHIFT,
- PAGE_SIZE, vma->vm_page_prot)) {
- printk(KERN_ERR "remap_pfn_range failed in hpet.c\n");
- return -EAGAIN;
-@@ -795,6 +796,7 @@
-
- hpetp->hp_which = hpet_nhpet++;
- hpetp->hp_hpet = hdp->hd_address;
-+ hpetp->hp_hpet_phys = hdp->hd_phys_address;
-
- hpetp->hp_ntimer = hdp->hd_nirqs;
-
-diff -ur linux-2.6.11/drivers/sbus/char/flash.c
linux-2.6.11-io/drivers/sbus/char/flash.c
---- linux-2.6.11/drivers/sbus/char/flash.c 2005-03-02 07:38:10.000000000
+0000
-+++ linux-2.6.11-io/drivers/sbus/char/flash.c 2005-03-15 17:20:22.000000000
+0000
-@@ -75,7 +75,7 @@
- pgprot_val(vma->vm_page_prot) |= _PAGE_E;
- vma->vm_flags |= (VM_SHM | VM_LOCKED);
-
-- if (remap_pfn_range(vma, vma->vm_start, addr, size, vma->vm_page_prot))
-+ if (io_remap_pfn_range(vma, vma->vm_start, addr, size,
vma->vm_page_prot))
- return -EAGAIN;
-
- return 0;
-diff -ur linux-2.6.11/include/linux/mm.h linux-2.6.11-io/include/linux/mm.h
---- linux-2.6.11/include/linux/mm.h 2005-03-02 07:37:47.000000000 +0000
-+++ linux-2.6.11-io/include/linux/mm.h 2005-03-15 17:03:46.000000000 +0000
-@@ -815,6 +815,10 @@
- extern int check_user_page_readable(struct mm_struct *mm, unsigned long
address);
- int remap_pfn_range(struct vm_area_struct *, unsigned long,
- unsigned long, unsigned long, pgprot_t);
-+/* Allow arch override for mapping of device and I/O (non-RAM) pages. */
-+#ifndef io_remap_pfn_range
-+#define io_remap_pfn_range remap_pfn_range
-+#endif
-
- #ifdef CONFIG_PROC_FS
- void __vm_stat_account(struct mm_struct *, unsigned long, struct file *,
long);
diff -r d75a502b45eb -r 43e28a2f6037 patches/linux-2.6.11/linux-2.6.11.12.patch
--- a/patches/linux-2.6.11/linux-2.6.11.12.patch Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,2579 +0,0 @@
-diff --git a/Documentation/SecurityBugs b/Documentation/SecurityBugs
-new file mode 100644
---- /dev/null
-+++ b/Documentation/SecurityBugs
-@@ -0,0 +1,38 @@
-+Linux kernel developers take security very seriously. As such, we'd
-+like to know when a security bug is found so that it can be fixed and
-+disclosed as quickly as possible. Please report security bugs to the
-+Linux kernel security team.
-+
-+1) Contact
-+
-+The Linux kernel security team can be contacted by email at
-+<security@xxxxxxxxxx>. This is a private list of security officers
-+who will help verify the bug report and develop and release a fix.
-+It is possible that the security team will bring in extra help from
-+area maintainers to understand and fix the security vulnerability.
-+
-+As it is with any bug, the more information provided the easier it
-+will be to diagnose and fix. Please review the procedure outlined in
-+REPORTING-BUGS if you are unclear about what information is helpful.
-+Any exploit code is very helpful and will not be released without
-+consent from the reporter unless it has already been made public.
-+
-+2) Disclosure
-+
-+The goal of the Linux kernel security team is to work with the
-+bug submitter to bug resolution as well as disclosure. We prefer
-+to fully disclose the bug as soon as possible. It is reasonable to
-+delay disclosure when the bug or the fix is not yet fully understood,
-+the solution is not well-tested or for vendor coordination. However, we
-+expect these delays to be short, measurable in days, not weeks or months.
-+A disclosure date is negotiated by the security team working with the
-+bug submitter as well as vendors. However, the kernel security team
-+holds the final say when setting a disclosure date. The timeframe for
-+disclosure is from immediate (esp. if it's already publically known)
-+to a few weeks. As a basic default policy, we expect report date to
-+disclosure date to be on the order of 7 days.
-+
-+3) Non-disclosure agreements
-+
-+The Linux kernel security team is not a formal body and therefore unable
-+to enter any non-disclosure agreements.
-diff --git a/MAINTAINERS b/MAINTAINERS
---- a/MAINTAINERS
-+++ b/MAINTAINERS
-@@ -1966,6 +1966,11 @@ M: christer@xxxxxxxxxxx
- W: http://www.weinigel.se
- S: Supported
-
-+SECURITY CONTACT
-+P: Security Officers
-+M: security@xxxxxxxxxx
-+S: Supported
-+
- SELINUX SECURITY MODULE
- P: Stephen Smalley
- M: sds@xxxxxxxxxxxxxx
-diff --git a/Makefile b/Makefile
---- a/Makefile
-+++ b/Makefile
-@@ -1,8 +1,8 @@
- VERSION = 2
- PATCHLEVEL = 6
- SUBLEVEL = 11
--EXTRAVERSION =
--NAME=Woozy Numbat
-+EXTRAVERSION = .12
-+NAME=Woozy Beaver
-
- # *DOCUMENTATION*
- # To see a list of typical targets execute "make help"
-diff --git a/REPORTING-BUGS b/REPORTING-BUGS
---- a/REPORTING-BUGS
-+++ b/REPORTING-BUGS
-@@ -16,6 +16,10 @@ code relevant to what you were doing. If
- describe how to recreate it. That is worth even more than the oops itself.
- The list of maintainers is in the MAINTAINERS file in this directory.
-
-+ If it is a security bug, please copy the Security Contact listed
-+in the MAINTAINERS file. They can help coordinate bugfix and disclosure.
-+See Documentation/SecurityBugs for more infomation.
-+
- If you are totally stumped as to whom to send the report, send it to
- linux-kernel@xxxxxxxxxxxxxxxx (For more information on the linux-kernel
- mailing list see http://www.tux.org/lkml/).
-diff --git a/arch/ia64/kernel/fsys.S b/arch/ia64/kernel/fsys.S
---- a/arch/ia64/kernel/fsys.S
-+++ b/arch/ia64/kernel/fsys.S
-@@ -611,8 +611,10 @@ GLOBAL_ENTRY(fsys_bubble_down)
- movl r2=ia64_ret_from_syscall
- ;;
- mov rp=r2 // set the real return addr
-- tbit.z p8,p0=r3,TIF_SYSCALL_TRACE
-+ and r3=_TIF_SYSCALL_TRACEAUDIT,r3
- ;;
-+ cmp.eq p8,p0=r3,r0
-+
- (p10) br.cond.spnt.many ia64_ret_from_syscall // p10==true means out
registers are more than 8
- (p8) br.call.sptk.many b6=b6 // ignore this return addr
- br.cond.sptk ia64_trace_syscall
-diff --git a/arch/ia64/kernel/signal.c b/arch/ia64/kernel/signal.c
---- a/arch/ia64/kernel/signal.c
-+++ b/arch/ia64/kernel/signal.c
-@@ -224,7 +224,8 @@ ia64_rt_sigreturn (struct sigscratch *sc
- * could be corrupted.
- */
- retval = (long) &ia64_leave_kernel;
-- if (test_thread_flag(TIF_SYSCALL_TRACE))
-+ if (test_thread_flag(TIF_SYSCALL_TRACE)
-+ || test_thread_flag(TIF_SYSCALL_AUDIT))
- /*
- * strace expects to be notified after sigreturn returns even
though the
- * context to which we return may not be in the middle of a
syscall.
-diff --git a/arch/ppc/oprofile/op_model_fsl_booke.c
b/arch/ppc/oprofile/op_model_fsl_booke.c
---- a/arch/ppc/oprofile/op_model_fsl_booke.c
-+++ b/arch/ppc/oprofile/op_model_fsl_booke.c
-@@ -150,7 +150,6 @@ static void fsl_booke_handle_interrupt(s
- int is_kernel;
- int val;
- int i;
-- unsigned int cpu = smp_processor_id();
-
- /* set the PMM bit (see comment below) */
- mtmsr(mfmsr() | MSR_PMM);
-@@ -162,7 +161,7 @@ static void fsl_booke_handle_interrupt(s
- val = ctr_read(i);
- if (val < 0) {
- if (oprofile_running && ctr[i].enabled) {
-- oprofile_add_sample(pc, is_kernel, i, cpu);
-+ oprofile_add_pc(pc, is_kernel, i);
- ctr_write(i, reset_value[i]);
- } else {
- ctr_write(i, 0);
-diff --git a/arch/ppc/platforms/4xx/ebony.h b/arch/ppc/platforms/4xx/ebony.h
---- a/arch/ppc/platforms/4xx/ebony.h
-+++ b/arch/ppc/platforms/4xx/ebony.h
-@@ -61,8 +61,8 @@
- */
-
- /* OpenBIOS defined UART mappings, used before early_serial_setup */
--#define UART0_IO_BASE (u8 *) 0xE0000200
--#define UART1_IO_BASE (u8 *) 0xE0000300
-+#define UART0_IO_BASE 0xE0000200
-+#define UART1_IO_BASE 0xE0000300
-
- /* external Epson SG-615P */
- #define BASE_BAUD 691200
-diff --git a/arch/ppc/platforms/4xx/luan.h b/arch/ppc/platforms/4xx/luan.h
---- a/arch/ppc/platforms/4xx/luan.h
-+++ b/arch/ppc/platforms/4xx/luan.h
-@@ -47,9 +47,9 @@
- #define RS_TABLE_SIZE 3
-
- /* PIBS defined UART mappings, used before early_serial_setup */
--#define UART0_IO_BASE (u8 *) 0xa0000200
--#define UART1_IO_BASE (u8 *) 0xa0000300
--#define UART2_IO_BASE (u8 *) 0xa0000600
-+#define UART0_IO_BASE 0xa0000200
-+#define UART1_IO_BASE 0xa0000300
-+#define UART2_IO_BASE 0xa0000600
-
- #define BASE_BAUD 11059200
- #define STD_UART_OP(num) \
-diff --git a/arch/ppc/platforms/4xx/ocotea.h b/arch/ppc/platforms/4xx/ocotea.h
---- a/arch/ppc/platforms/4xx/ocotea.h
-+++ b/arch/ppc/platforms/4xx/ocotea.h
-@@ -56,8 +56,8 @@
- #define RS_TABLE_SIZE 2
-
- /* OpenBIOS defined UART mappings, used before early_serial_setup */
--#define UART0_IO_BASE (u8 *) 0xE0000200
--#define UART1_IO_BASE (u8 *) 0xE0000300
-+#define UART0_IO_BASE 0xE0000200
-+#define UART1_IO_BASE 0xE0000300
-
- #define BASE_BAUD 11059200/16
- #define STD_UART_OP(num) \
-diff --git a/arch/ppc64/kernel/pSeries_iommu.c
b/arch/ppc64/kernel/pSeries_iommu.c
---- a/arch/ppc64/kernel/pSeries_iommu.c
-+++ b/arch/ppc64/kernel/pSeries_iommu.c
-@@ -401,6 +401,8 @@ static void iommu_bus_setup_pSeriesLP(st
- struct device_node *dn, *pdn;
- unsigned int *dma_window = NULL;
-
-+ DBG("iommu_bus_setup_pSeriesLP, bus %p, bus->self %p\n", bus,
bus->self);
-+
- dn = pci_bus_to_OF_node(bus);
-
- /* Find nearest ibm,dma-window, walking up the device tree */
-@@ -455,6 +457,56 @@ static void iommu_dev_setup_pSeries(stru
- }
- }
-
-+static void iommu_dev_setup_pSeriesLP(struct pci_dev *dev)
-+{
-+ struct device_node *pdn, *dn;
-+ struct iommu_table *tbl;
-+ int *dma_window = NULL;
-+
-+ DBG("iommu_dev_setup_pSeriesLP, dev %p (%s)\n", dev, dev->pretty_name);
-+
-+ /* dev setup for LPAR is a little tricky, since the device tree might
-+ * contain the dma-window properties per-device and not neccesarily
-+ * for the bus. So we need to search upwards in the tree until we
-+ * either hit a dma-window property, OR find a parent with a table
-+ * already allocated.
-+ */
-+ dn = pci_device_to_OF_node(dev);
-+
-+ for (pdn = dn; pdn && !pdn->iommu_table; pdn = pdn->parent) {
-+ dma_window = (unsigned int *)get_property(pdn,
"ibm,dma-window", NULL);
-+ if (dma_window)
-+ break;
-+ }
-+
-+ /* Check for parent == NULL so we don't try to setup the empty EADS
-+ * slots on POWER4 machines.
-+ */
-+ if (dma_window == NULL || pdn->parent == NULL) {
-+ /* Fall back to regular (non-LPAR) dev setup */
-+ DBG("No dma window for device, falling back to regular
setup\n");
-+ iommu_dev_setup_pSeries(dev);
-+ return;
-+ } else {
-+ DBG("Found DMA window, allocating table\n");
-+ }
-+
-+ if (!pdn->iommu_table) {
-+ /* iommu_table_setparms_lpar needs bussubno. */
-+ pdn->bussubno = pdn->phb->bus->number;
-+
-+ tbl = (struct iommu_table *)kmalloc(sizeof(struct iommu_table),
-+ GFP_KERNEL);
-+
-+ iommu_table_setparms_lpar(pdn->phb, pdn, tbl, dma_window);
-+
-+ pdn->iommu_table = iommu_init_table(tbl);
-+ }
-+
-+ if (pdn != dn)
-+ dn->iommu_table = pdn->iommu_table;
-+}
-+
- static void iommu_bus_setup_null(struct pci_bus *b) { }
- static void iommu_dev_setup_null(struct pci_dev *d) { }
-
-@@ -479,13 +531,14 @@ void iommu_init_early_pSeries(void)
- ppc_md.tce_free = tce_free_pSeriesLP;
- }
- ppc_md.iommu_bus_setup = iommu_bus_setup_pSeriesLP;
-+ ppc_md.iommu_dev_setup = iommu_dev_setup_pSeriesLP;
- } else {
- ppc_md.tce_build = tce_build_pSeries;
- ppc_md.tce_free = tce_free_pSeries;
- ppc_md.iommu_bus_setup = iommu_bus_setup_pSeries;
-+ ppc_md.iommu_dev_setup = iommu_dev_setup_pSeries;
- }
-
-- ppc_md.iommu_dev_setup = iommu_dev_setup_pSeries;
-
- pci_iommu_init();
- }
-diff --git a/arch/sparc/kernel/ptrace.c b/arch/sparc/kernel/ptrace.c
---- a/arch/sparc/kernel/ptrace.c
-+++ b/arch/sparc/kernel/ptrace.c
-@@ -531,18 +531,6 @@ asmlinkage void do_ptrace(struct pt_regs
- pt_error_return(regs, EIO);
- goto out_tsk;
- }
-- if (addr != 1) {
-- if (addr & 3) {
-- pt_error_return(regs, EINVAL);
-- goto out_tsk;
-- }
--#ifdef DEBUG_PTRACE
-- printk ("Original: %08lx %08lx\n",
child->thread.kregs->pc, child->thread.kregs->npc);
-- printk ("Continuing with %08lx %08lx\n", addr, addr+4);
--#endif
-- child->thread.kregs->pc = addr;
-- child->thread.kregs->npc = addr + 4;
-- }
-
- if (request == PTRACE_SYSCALL)
- set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-diff --git a/arch/sparc64/kernel/ptrace.c b/arch/sparc64/kernel/ptrace.c
---- a/arch/sparc64/kernel/ptrace.c
-+++ b/arch/sparc64/kernel/ptrace.c
-@@ -514,25 +514,6 @@ asmlinkage void do_ptrace(struct pt_regs
- pt_error_return(regs, EIO);
- goto out_tsk;
- }
-- if (addr != 1) {
-- unsigned long pc_mask = ~0UL;
--
-- if ((child->thread_info->flags & _TIF_32BIT) != 0)
-- pc_mask = 0xffffffff;
--
-- if (addr & 3) {
-- pt_error_return(regs, EINVAL);
-- goto out_tsk;
-- }
--#ifdef DEBUG_PTRACE
-- printk ("Original: %016lx %016lx\n",
-- child->thread_info->kregs->tpc,
-- child->thread_info->kregs->tnpc);
-- printk ("Continuing with %016lx %016lx\n", addr,
addr+4);
--#endif
-- child->thread_info->kregs->tpc = (addr & pc_mask);
-- child->thread_info->kregs->tnpc = ((addr + 4) &
pc_mask);
-- }
-
- if (request == PTRACE_SYSCALL) {
- set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-diff --git a/arch/sparc64/kernel/signal32.c b/arch/sparc64/kernel/signal32.c
---- a/arch/sparc64/kernel/signal32.c
-+++ b/arch/sparc64/kernel/signal32.c
-@@ -192,10 +192,13 @@ int copy_siginfo_to_user32(compat_siginf
- err |= __put_user(from->si_uid, &to->si_uid);
- break;
- case __SI_FAULT >> 16:
-- case __SI_POLL >> 16:
- err |= __put_user(from->si_trapno, &to->si_trapno);
- err |= __put_user((unsigned long)from->si_addr,
&to->si_addr);
- break;
-+ case __SI_POLL >> 16:
-+ err |= __put_user(from->si_band, &to->si_band);
-+ err |= __put_user(from->si_fd, &to->si_fd);
-+ break;
- case __SI_RT >> 16: /* This is not generated by the kernel as
of now. */
- case __SI_MESGQ >> 16:
- err |= __put_user(from->si_pid, &to->si_pid);
-diff --git a/arch/sparc64/kernel/systbls.S b/arch/sparc64/kernel/systbls.S
---- a/arch/sparc64/kernel/systbls.S
-+++ b/arch/sparc64/kernel/systbls.S
-@@ -75,7 +75,7 @@ sys_call_table32:
- /*260*/ .word compat_sys_sched_getaffinity,
compat_sys_sched_setaffinity, sys32_timer_settime, compat_sys_timer_gettime,
sys_timer_getoverrun
- .word sys_timer_delete, sys32_timer_create, sys_ni_syscall,
compat_sys_io_setup, sys_io_destroy
- /*270*/ .word sys32_io_submit, sys_io_cancel, compat_sys_io_getevents,
sys32_mq_open, sys_mq_unlink
-- .word sys_mq_timedsend, sys_mq_timedreceive, compat_sys_mq_notify,
compat_sys_mq_getsetattr, compat_sys_waitid
-+ .word compat_sys_mq_timedsend, compat_sys_mq_timedreceive,
compat_sys_mq_notify, compat_sys_mq_getsetattr, compat_sys_waitid
- /*280*/ .word sys_ni_syscall, sys_add_key, sys_request_key, sys_keyctl
-
- #endif /* CONFIG_COMPAT */
-diff --git a/arch/um/include/sysdep-i386/syscalls.h
b/arch/um/include/sysdep-i386/syscalls.h
---- a/arch/um/include/sysdep-i386/syscalls.h
-+++ b/arch/um/include/sysdep-i386/syscalls.h
-@@ -23,6 +23,9 @@ extern long sys_mmap2(unsigned long addr
- unsigned long prot, unsigned long flags,
- unsigned long fd, unsigned long pgoff);
-
-+/* On i386 they choose a meaningless naming.*/
-+#define __NR_kexec_load __NR_sys_kexec_load
-+
- #define ARCH_SYSCALLS \
- [ __NR_waitpid ] = (syscall_handler_t *) sys_waitpid, \
- [ __NR_break ] = (syscall_handler_t *) sys_ni_syscall, \
-@@ -101,15 +104,12 @@ extern long sys_mmap2(unsigned long addr
- [ 223 ] = (syscall_handler_t *) sys_ni_syscall, \
- [ __NR_set_thread_area ] = (syscall_handler_t *) sys_ni_syscall, \
- [ __NR_get_thread_area ] = (syscall_handler_t *) sys_ni_syscall, \
-- [ __NR_fadvise64 ] = (syscall_handler_t *) sys_fadvise64, \
- [ 251 ] = (syscall_handler_t *) sys_ni_syscall, \
-- [ __NR_remap_file_pages ] = (syscall_handler_t *)
sys_remap_file_pages, \
-- [ __NR_utimes ] = (syscall_handler_t *) sys_utimes, \
-- [ __NR_vserver ] = (syscall_handler_t *) sys_ni_syscall,
--
-+ [ 285 ] = (syscall_handler_t *) sys_ni_syscall,
-+
- /* 222 doesn't yet have a name in include/asm-i386/unistd.h */
-
--#define LAST_ARCH_SYSCALL __NR_vserver
-+#define LAST_ARCH_SYSCALL 285
-
- /*
- * Overrides for Emacs so that we follow Linus's tabbing style.
-diff --git a/arch/um/include/sysdep-x86_64/syscalls.h
b/arch/um/include/sysdep-x86_64/syscalls.h
---- a/arch/um/include/sysdep-x86_64/syscalls.h
-+++ b/arch/um/include/sysdep-x86_64/syscalls.h
-@@ -71,12 +71,7 @@ extern syscall_handler_t sys_arch_prctl;
- [ __NR_iopl ] = (syscall_handler_t *) sys_ni_syscall, \
- [ __NR_set_thread_area ] = (syscall_handler_t *) sys_ni_syscall, \
- [ __NR_get_thread_area ] = (syscall_handler_t *) sys_ni_syscall, \
-- [ __NR_remap_file_pages ] = (syscall_handler_t *)
sys_remap_file_pages, \
- [ __NR_semtimedop ] = (syscall_handler_t *) sys_semtimedop, \
-- [ __NR_fadvise64 ] = (syscall_handler_t *) sys_fadvise64, \
-- [ 223 ] = (syscall_handler_t *) sys_ni_syscall, \
-- [ __NR_utimes ] = (syscall_handler_t *) sys_utimes, \
-- [ __NR_vserver ] = (syscall_handler_t *) sys_ni_syscall, \
- [ 251 ] = (syscall_handler_t *) sys_ni_syscall,
-
- #define LAST_ARCH_SYSCALL 251
-diff --git a/arch/um/kernel/skas/uaccess.c b/arch/um/kernel/skas/uaccess.c
---- a/arch/um/kernel/skas/uaccess.c
-+++ b/arch/um/kernel/skas/uaccess.c
-@@ -61,7 +61,8 @@ static void do_buffer_op(void *jmpbuf, v
- void *arg;
- int *res;
-
-- va_copy(args, *(va_list *)arg_ptr);
-+ /* Some old gccs recognize __va_copy, but not va_copy */
-+ __va_copy(args, *(va_list *)arg_ptr);
- addr = va_arg(args, unsigned long);
- len = va_arg(args, int);
- is_write = va_arg(args, int);
-diff --git a/arch/um/kernel/sys_call_table.c b/arch/um/kernel/sys_call_table.c
---- a/arch/um/kernel/sys_call_table.c
-+++ b/arch/um/kernel/sys_call_table.c
-@@ -48,7 +48,6 @@ extern syscall_handler_t sys_vfork;
- extern syscall_handler_t old_select;
- extern syscall_handler_t sys_modify_ldt;
- extern syscall_handler_t sys_rt_sigsuspend;
--extern syscall_handler_t sys_vserver;
- extern syscall_handler_t sys_mbind;
- extern syscall_handler_t sys_get_mempolicy;
- extern syscall_handler_t sys_set_mempolicy;
-@@ -242,6 +241,7 @@ syscall_handler_t *sys_call_table[] = {
- [ __NR_epoll_create ] = (syscall_handler_t *) sys_epoll_create,
- [ __NR_epoll_ctl ] = (syscall_handler_t *) sys_epoll_ctl,
- [ __NR_epoll_wait ] = (syscall_handler_t *) sys_epoll_wait,
-+ [ __NR_remap_file_pages ] = (syscall_handler_t *) sys_remap_file_pages,
- [ __NR_set_tid_address ] = (syscall_handler_t *) sys_set_tid_address,
- [ __NR_timer_create ] = (syscall_handler_t *) sys_timer_create,
- [ __NR_timer_settime ] = (syscall_handler_t *) sys_timer_settime,
-@@ -252,12 +252,10 @@ syscall_handler_t *sys_call_table[] = {
- [ __NR_clock_gettime ] = (syscall_handler_t *) sys_clock_gettime,
- [ __NR_clock_getres ] = (syscall_handler_t *) sys_clock_getres,
- [ __NR_clock_nanosleep ] = (syscall_handler_t *) sys_clock_nanosleep,
-- [ __NR_statfs64 ] = (syscall_handler_t *) sys_statfs64,
-- [ __NR_fstatfs64 ] = (syscall_handler_t *) sys_fstatfs64,
- [ __NR_tgkill ] = (syscall_handler_t *) sys_tgkill,
- [ __NR_utimes ] = (syscall_handler_t *) sys_utimes,
-- [ __NR_fadvise64_64 ] = (syscall_handler_t *) sys_fadvise64_64,
-- [ __NR_vserver ] = (syscall_handler_t *) sys_vserver,
-+ [ __NR_fadvise64 ] = (syscall_handler_t *) sys_fadvise64,
-+ [ __NR_vserver ] = (syscall_handler_t *) sys_ni_syscall,
- [ __NR_mbind ] = (syscall_handler_t *) sys_mbind,
- [ __NR_get_mempolicy ] = (syscall_handler_t *) sys_get_mempolicy,
- [ __NR_set_mempolicy ] = (syscall_handler_t *) sys_set_mempolicy,
-@@ -267,9 +265,8 @@ syscall_handler_t *sys_call_table[] = {
- [ __NR_mq_timedreceive ] = (syscall_handler_t *) sys_mq_timedreceive,
- [ __NR_mq_notify ] = (syscall_handler_t *) sys_mq_notify,
- [ __NR_mq_getsetattr ] = (syscall_handler_t *) sys_mq_getsetattr,
-- [ __NR_sys_kexec_load ] = (syscall_handler_t *) sys_ni_syscall,
-+ [ __NR_kexec_load ] = (syscall_handler_t *) sys_ni_syscall,
- [ __NR_waitid ] = (syscall_handler_t *) sys_waitid,
-- [ 285 ] = (syscall_handler_t *) sys_ni_syscall,
- [ __NR_add_key ] = (syscall_handler_t *) sys_add_key,
- [ __NR_request_key ] = (syscall_handler_t *) sys_request_key,
- [ __NR_keyctl ] = (syscall_handler_t *) sys_keyctl,
-diff --git a/arch/x86_64/kernel/apic.c b/arch/x86_64/kernel/apic.c
---- a/arch/x86_64/kernel/apic.c
-+++ b/arch/x86_64/kernel/apic.c
-@@ -775,9 +775,7 @@ void __init setup_boot_APIC_clock (void)
-
- void __init setup_secondary_APIC_clock(void)
- {
-- local_irq_disable(); /* FIXME: Do we need this? --RR */
- setup_APIC_timer(calibration_result);
-- local_irq_enable();
- }
-
- void __init disable_APIC_timer(void)
-diff --git a/arch/x86_64/kernel/ptrace.c b/arch/x86_64/kernel/ptrace.c
---- a/arch/x86_64/kernel/ptrace.c
-+++ b/arch/x86_64/kernel/ptrace.c
-@@ -129,13 +129,13 @@ static int putreg(struct task_struct *ch
- value &= 0xffff;
- return 0;
- case offsetof(struct user_regs_struct,fs_base):
-- if (!((value >> 48) == 0 || (value >> 48) == 0xffff))
-- return -EIO;
-+ if (value >= TASK_SIZE)
-+ return -EIO;
- child->thread.fs = value;
- return 0;
- case offsetof(struct user_regs_struct,gs_base):
-- if (!((value >> 48) == 0 || (value >> 48) == 0xffff))
-- return -EIO;
-+ if (value >= TASK_SIZE)
-+ return -EIO;
- child->thread.gs = value;
- return 0;
- case offsetof(struct user_regs_struct, eflags):
-@@ -149,6 +149,11 @@ static int putreg(struct task_struct *ch
- return -EIO;
- value &= 0xffff;
- break;
-+ case offsetof(struct user_regs_struct, rip):
-+ /* Check if the new RIP address is canonical */
-+ if (value >= TASK_SIZE)
-+ return -EIO;
-+ break;
- }
- put_stack_long(child, regno - sizeof(struct pt_regs), value);
- return 0;
-@@ -247,7 +252,7 @@ asmlinkage long sys_ptrace(long request,
- break;
-
- switch (addr) {
-- case 0 ... sizeof(struct user_regs_struct):
-+ case 0 ... sizeof(struct user_regs_struct) - sizeof(long):
- tmp = getreg(child, addr);
- break;
- case offsetof(struct user, u_debugreg[0]):
-@@ -292,7 +297,7 @@ asmlinkage long sys_ptrace(long request,
- break;
-
- switch (addr) {
-- case 0 ... sizeof(struct user_regs_struct):
-+ case 0 ... sizeof(struct user_regs_struct) - sizeof(long):
- ret = putreg(child, addr, data);
- break;
- /* Disallows to set a breakpoint into the vsyscall */
-diff --git a/arch/x86_64/kernel/smpboot.c b/arch/x86_64/kernel/smpboot.c
---- a/arch/x86_64/kernel/smpboot.c
-+++ b/arch/x86_64/kernel/smpboot.c
-@@ -309,8 +309,6 @@ void __init smp_callin(void)
- Dprintk("CALLIN, before setup_local_APIC().\n");
- setup_local_APIC();
-
-- local_irq_enable();
--
- /*
- * Get our bogomips.
- */
-@@ -324,8 +322,6 @@ void __init smp_callin(void)
- */
- smp_store_cpu_info(cpuid);
-
-- local_irq_disable();
--
- /*
- * Allow the master to continue.
- */
-diff --git a/arch/x86_64/mm/fault.c b/arch/x86_64/mm/fault.c
---- a/arch/x86_64/mm/fault.c
-+++ b/arch/x86_64/mm/fault.c
-@@ -236,6 +236,8 @@ static noinline void pgtable_bad(unsigne
-
- /*
- * Handle a fault on the vmalloc or module mapping area
-+ *
-+ * This assumes no large pages in there.
- */
- static int vmalloc_fault(unsigned long address)
- {
-@@ -274,7 +276,10 @@ static int vmalloc_fault(unsigned long a
- if (!pte_present(*pte_ref))
- return -1;
- pte = pte_offset_kernel(pmd, address);
-- if (!pte_present(*pte) || pte_page(*pte) != pte_page(*pte_ref))
-+ /* Don't use pte_page here, because the mappings can point
-+ outside mem_map, and the NUMA hash lookup cannot handle
-+ that. */
-+ if (!pte_present(*pte) || pte_pfn(*pte) != pte_pfn(*pte_ref))
- BUG();
- __flush_tlb_all();
- return 0;
-@@ -348,7 +353,9 @@ asmlinkage void do_page_fault(struct pt_
- * protection error (error_code & 1) == 0.
- */
- if (unlikely(address >= TASK_SIZE)) {
-- if (!(error_code & 5)) {
-+ if (!(error_code & 5) &&
-+ ((address >= VMALLOC_START && address < VMALLOC_END) ||
-+ (address >= MODULES_VADDR && address < MODULES_END))) {
- if (vmalloc_fault(address) < 0)
- goto bad_area_nosemaphore;
- return;
-diff --git a/arch/x86_64/mm/ioremap.c b/arch/x86_64/mm/ioremap.c
---- a/arch/x86_64/mm/ioremap.c
-+++ b/arch/x86_64/mm/ioremap.c
-@@ -266,7 +266,7 @@ void iounmap(volatile void __iomem *addr
- if ((p->flags >> 20) &&
- p->phys_addr + p->size - 1 < virt_to_phys(high_memory)) {
- /* p->size includes the guard page, but cpa doesn't like that */
-- change_page_attr(virt_to_page(__va(p->phys_addr)),
-+ change_page_attr_addr((unsigned long)(__va(p->phys_addr)),
- (p->size - PAGE_SIZE) >> PAGE_SHIFT,
- PAGE_KERNEL);
- global_flush_tlb();
-diff --git a/drivers/block/ioctl.c b/drivers/block/ioctl.c
---- a/drivers/block/ioctl.c
-+++ b/drivers/block/ioctl.c
-@@ -237,3 +237,5 @@ long compat_blkdev_ioctl(struct file *fi
- }
- return ret;
- }
-+
-+EXPORT_SYMBOL_GPL(blkdev_ioctl);
-diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
---- a/drivers/block/pktcdvd.c
-+++ b/drivers/block/pktcdvd.c
-@@ -2400,7 +2400,7 @@ static int pkt_ioctl(struct inode *inode
- case CDROM_LAST_WRITTEN:
- case CDROM_SEND_PACKET:
- case SCSI_IOCTL_SEND_COMMAND:
-- return ioctl_by_bdev(pd->bdev, cmd, arg);
-+ return blkdev_ioctl(pd->bdev->bd_inode, file, cmd, arg);
-
- case CDROMEJECT:
- /*
-@@ -2408,7 +2408,7 @@ static int pkt_ioctl(struct inode *inode
- * have to unlock it or else the eject command fails.
- */
- pkt_lock_door(pd, 0);
-- return ioctl_by_bdev(pd->bdev, cmd, arg);
-+ return blkdev_ioctl(pd->bdev->bd_inode, file, cmd, arg);
-
- default:
- printk("pktcdvd: Unknown ioctl for %s (%x)\n", pd->name, cmd);
-diff --git a/drivers/char/drm/drm_ioctl.c b/drivers/char/drm/drm_ioctl.c
---- a/drivers/char/drm/drm_ioctl.c
-+++ b/drivers/char/drm/drm_ioctl.c
-@@ -326,6 +326,8 @@ int drm_setversion(DRM_IOCTL_ARGS)
-
- DRM_COPY_FROM_USER_IOCTL(sv, argp, sizeof(sv));
-
-+ memset(&version, 0, sizeof(version));
-+
- dev->driver->version(&version);
- retv.drm_di_major = DRM_IF_MAJOR;
- retv.drm_di_minor = DRM_IF_MINOR;
-diff --git a/drivers/char/raw.c b/drivers/char/raw.c
---- a/drivers/char/raw.c
-+++ b/drivers/char/raw.c
-@@ -122,7 +122,7 @@ raw_ioctl(struct inode *inode, struct fi
- {
- struct block_device *bdev = filp->private_data;
-
-- return ioctl_by_bdev(bdev, command, arg);
-+ return blkdev_ioctl(bdev->bd_inode, filp, command, arg);
- }
-
- static void bind_device(struct raw_config_request *rq)
-diff --git a/drivers/i2c/chips/eeprom.c b/drivers/i2c/chips/eeprom.c
---- a/drivers/i2c/chips/eeprom.c
-+++ b/drivers/i2c/chips/eeprom.c
-@@ -130,7 +130,8 @@ static ssize_t eeprom_read(struct kobjec
-
- /* Hide Vaio security settings to regular users (16 first bytes) */
- if (data->nature == VAIO && off < 16 && !capable(CAP_SYS_ADMIN)) {
-- int in_row1 = 16 - off;
-+ size_t in_row1 = 16 - off;
-+ in_row1 = min(in_row1, count);
- memset(buf, 0, in_row1);
- if (count - in_row1 > 0)
- memcpy(buf + in_row1, &data->data[16], count - in_row1);
-diff --git a/drivers/i2c/chips/it87.c b/drivers/i2c/chips/it87.c
---- a/drivers/i2c/chips/it87.c
-+++ b/drivers/i2c/chips/it87.c
-@@ -631,7 +631,7 @@ static ssize_t show_alarms(struct device
- struct it87_data *data = it87_update_device(dev);
- return sprintf(buf,"%d\n", ALARMS_FROM_REG(data->alarms));
- }
--static DEVICE_ATTR(alarms, S_IRUGO | S_IWUSR, show_alarms, NULL);
-+static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
-
- static ssize_t
- show_vrm_reg(struct device *dev, char *buf)
-diff --git a/drivers/i2c/chips/via686a.c b/drivers/i2c/chips/via686a.c
---- a/drivers/i2c/chips/via686a.c
-+++ b/drivers/i2c/chips/via686a.c
-@@ -554,7 +554,7 @@ static ssize_t show_alarms(struct device
- struct via686a_data *data = via686a_update_device(dev);
- return sprintf(buf,"%d\n", ALARMS_FROM_REG(data->alarms));
- }
--static DEVICE_ATTR(alarms, S_IRUGO | S_IWUSR, show_alarms, NULL);
-+static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
-
- /* The driver. I choose to use type i2c_driver, as at is identical to both
- smbus_driver and isa_driver, and clients could be of either kind */
-diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
---- a/drivers/ide/ide-disk.c
-+++ b/drivers/ide/ide-disk.c
-@@ -133,6 +133,8 @@ static ide_startstop_t __ide_do_rw_disk(
- if (hwif->no_lba48_dma && lba48 && dma) {
- if (block + rq->nr_sectors > 1ULL << 28)
- dma = 0;
-+ else
-+ lba48 = 0;
- }
-
- if (!dma) {
-@@ -146,7 +148,7 @@ static ide_startstop_t __ide_do_rw_disk(
- /* FIXME: SELECT_MASK(drive, 0) ? */
-
- if (drive->select.b.lba) {
-- if (drive->addressing == 1) {
-+ if (lba48) {
- task_ioreg_t tasklets[10];
-
- pr_debug("%s: LBA=0x%012llx\n", drive->name, block);
-diff --git a/drivers/input/serio/i8042-x86ia64io.h
b/drivers/input/serio/i8042-x86ia64io.h
---- a/drivers/input/serio/i8042-x86ia64io.h
-+++ b/drivers/input/serio/i8042-x86ia64io.h
-@@ -88,7 +88,7 @@ static struct dmi_system_id __initdata i
- };
- #endif
-
--#ifdef CONFIG_ACPI
-+#if defined(__ia64__) && defined(CONFIG_ACPI)
- #include <linux/acpi.h>
- #include <acpi/acpi_bus.h>
-
-@@ -281,7 +281,7 @@ static inline int i8042_platform_init(vo
- i8042_kbd_irq = I8042_MAP_IRQ(1);
- i8042_aux_irq = I8042_MAP_IRQ(12);
-
--#ifdef CONFIG_ACPI
-+#if defined(__ia64__) && defined(CONFIG_ACPI)
- if (i8042_acpi_init())
- return -1;
- #endif
-@@ -300,7 +300,7 @@ static inline int i8042_platform_init(vo
-
- static inline void i8042_platform_exit(void)
- {
--#ifdef CONFIG_ACPI
-+#if defined(__ia64__) && defined(CONFIG_ACPI)
- i8042_acpi_exit();
- #endif
- }
-diff --git a/drivers/md/raid6altivec.uc b/drivers/md/raid6altivec.uc
---- a/drivers/md/raid6altivec.uc
-+++ b/drivers/md/raid6altivec.uc
-@@ -108,7 +108,11 @@ int raid6_have_altivec(void);
- int raid6_have_altivec(void)
- {
- /* This assumes either all CPUs have Altivec or none does */
-+#ifdef CONFIG_PPC64
- return cur_cpu_spec->cpu_features & CPU_FTR_ALTIVEC;
-+#else
-+ return cur_cpu_spec[0]->cpu_features & CPU_FTR_ALTIVEC;
-+#endif
- }
- #endif
-
-diff --git a/drivers/media/video/adv7170.c b/drivers/media/video/adv7170.c
---- a/drivers/media/video/adv7170.c
-+++ b/drivers/media/video/adv7170.c
-@@ -130,7 +130,7 @@ adv7170_write_block (struct i2c_client *
- u8 block_data[32];
-
- msg.addr = client->addr;
-- msg.flags = client->flags;
-+ msg.flags = 0;
- while (len >= 2) {
- msg.buf = (char *) block_data;
- msg.len = 0;
-diff --git a/drivers/media/video/adv7175.c b/drivers/media/video/adv7175.c
---- a/drivers/media/video/adv7175.c
-+++ b/drivers/media/video/adv7175.c
-@@ -126,7 +126,7 @@ adv7175_write_block (struct i2c_client *
- u8 block_data[32];
-
- msg.addr = client->addr;
-- msg.flags = client->flags;
-+ msg.flags = 0;
- while (len >= 2) {
- msg.buf = (char *) block_data;
- msg.len = 0;
-diff --git a/drivers/media/video/bt819.c b/drivers/media/video/bt819.c
---- a/drivers/media/video/bt819.c
-+++ b/drivers/media/video/bt819.c
-@@ -146,7 +146,7 @@ bt819_write_block (struct i2c_client *cl
- u8 block_data[32];
-
- msg.addr = client->addr;
-- msg.flags = client->flags;
-+ msg.flags = 0;
- while (len >= 2) {
- msg.buf = (char *) block_data;
- msg.len = 0;
-diff --git a/drivers/media/video/bttv-cards.c
b/drivers/media/video/bttv-cards.c
---- a/drivers/media/video/bttv-cards.c
-+++ b/drivers/media/video/bttv-cards.c
-@@ -1939,7 +1939,6 @@ struct tvcard bttv_tvcards[] = {
- .no_tda9875 = 1,
- .no_tda7432 = 1,
- .tuner_type = TUNER_ABSENT,
-- .no_video = 1,
- .pll = PLL_28,
- },{
- .name = "Teppro TEV-560/InterVision IV-560",
-@@ -2718,8 +2717,6 @@ void __devinit bttv_init_card2(struct bt
- }
- btv->pll.pll_current = -1;
-
-- bttv_reset_audio(btv);
--
- /* tuner configuration (from card list / autodetect / insmod option) */
- if (UNSET != bttv_tvcards[btv->c.type].tuner_type)
- if(UNSET == btv->tuner_type)
-diff --git a/drivers/media/video/saa7110.c b/drivers/media/video/saa7110.c
---- a/drivers/media/video/saa7110.c
-+++ b/drivers/media/video/saa7110.c
-@@ -60,8 +60,10 @@ MODULE_PARM_DESC(debug, "Debug level (0-
-
- #define I2C_SAA7110 0x9C /* or 0x9E */
-
-+#define SAA7110_NR_REG 0x35
-+
- struct saa7110 {
-- unsigned char reg[54];
-+ u8 reg[SAA7110_NR_REG];
-
- int norm;
- int input;
-@@ -95,31 +97,28 @@ saa7110_write_block (struct i2c_client *
- unsigned int len)
- {
- int ret = -1;
-- u8 reg = *data++;
-+ u8 reg = *data; /* first register to write to */
-
-- len--;
-+ /* Sanity check */
-+ if (reg + (len - 1) > SAA7110_NR_REG)
-+ return ret;
-
- /* the saa7110 has an autoincrement function, use it if
- * the adapter understands raw I2C */
- if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
- struct saa7110 *decoder = i2c_get_clientdata(client);
- struct i2c_msg msg;
-- u8 block_data[54];
-
-- msg.len = 0;
-- msg.buf = (char *) block_data;
-+ msg.len = len;
-+ msg.buf = (char *) data;
- msg.addr = client->addr;
-- msg.flags = client->flags;
-- while (len >= 1) {
-- msg.len = 0;
-- block_data[msg.len++] = reg;
-- while (len-- >= 1 && msg.len < 54)
-- block_data[msg.len++] =
-- decoder->reg[reg++] = *data++;
-- ret = i2c_transfer(client->adapter, &msg, 1);
-- }
-+ msg.flags = 0;
-+ ret = i2c_transfer(client->adapter, &msg, 1);
-+
-+ /* Cache the written data */
-+ memcpy(decoder->reg + reg, data + 1, len - 1);
- } else {
-- while (len-- >= 1) {
-+ for (++data, --len; len; len--) {
- if ((ret = saa7110_write(client, reg++,
- *data++)) < 0)
- break;
-@@ -192,7 +191,7 @@ saa7110_selmux (struct i2c_client *clien
- return 0;
- }
-
--static const unsigned char initseq[] = {
-+static const unsigned char initseq[1 + SAA7110_NR_REG] = {
- 0, 0x4C, 0x3C, 0x0D, 0xEF, 0xBD, 0xF2, 0x03, 0x00,
- /* 0x08 */ 0xF8, 0xF8, 0x60, 0x60, 0x00, 0x86, 0x18, 0x90,
- /* 0x10 */ 0x00, 0x59, 0x40, 0x46, 0x42, 0x1A, 0xFF, 0xDA,
-diff --git a/drivers/media/video/saa7114.c b/drivers/media/video/saa7114.c
---- a/drivers/media/video/saa7114.c
-+++ b/drivers/media/video/saa7114.c
-@@ -163,7 +163,7 @@ saa7114_write_block (struct i2c_client *
- u8 block_data[32];
-
- msg.addr = client->addr;
-- msg.flags = client->flags;
-+ msg.flags = 0;
- while (len >= 2) {
- msg.buf = (char *) block_data;
- msg.len = 0;
-diff --git a/drivers/media/video/saa7185.c b/drivers/media/video/saa7185.c
---- a/drivers/media/video/saa7185.c
-+++ b/drivers/media/video/saa7185.c
-@@ -118,7 +118,7 @@ saa7185_write_block (struct i2c_client *
- u8 block_data[32];
-
- msg.addr = client->addr;
-- msg.flags = client->flags;
-+ msg.flags = 0;
- while (len >= 2) {
- msg.buf = (char *) block_data;
- msg.len = 0;
-diff --git a/drivers/net/3c59x.c b/drivers/net/3c59x.c
---- a/drivers/net/3c59x.c
-+++ b/drivers/net/3c59x.c
-@@ -1581,7 +1581,8 @@ vortex_up(struct net_device *dev)
-
- if (VORTEX_PCI(vp)) {
- pci_set_power_state(VORTEX_PCI(vp), PCI_D0); /* Go active */
-- pci_restore_state(VORTEX_PCI(vp));
-+ if (vp->pm_state_valid)
-+ pci_restore_state(VORTEX_PCI(vp));
- pci_enable_device(VORTEX_PCI(vp));
- }
-
-@@ -2741,6 +2742,7 @@ vortex_down(struct net_device *dev, int
- outl(0, ioaddr + DownListPtr);
-
- if (final_down && VORTEX_PCI(vp)) {
-+ vp->pm_state_valid = 1;
- pci_save_state(VORTEX_PCI(vp));
- acpi_set_WOL(dev);
- }
-@@ -3243,9 +3245,10 @@ static void acpi_set_WOL(struct net_devi
- outw(RxEnable, ioaddr + EL3_CMD);
-
- pci_enable_wake(VORTEX_PCI(vp), 0, 1);
-+
-+ /* Change the power state to D3; RxEnable doesn't take effect.
*/
-+ pci_set_power_state(VORTEX_PCI(vp), PCI_D3hot);
- }
-- /* Change the power state to D3; RxEnable doesn't take effect. */
-- pci_set_power_state(VORTEX_PCI(vp), PCI_D3hot);
- }
-
-
-diff --git a/drivers/net/amd8111e.c b/drivers/net/amd8111e.c
---- a/drivers/net/amd8111e.c
-+++ b/drivers/net/amd8111e.c
-@@ -1381,6 +1381,8 @@ static int amd8111e_open(struct net_devi
-
- if(amd8111e_restart(dev)){
- spin_unlock_irq(&lp->lock);
-+ if (dev->irq)
-+ free_irq(dev->irq, dev);
- return -ENOMEM;
- }
- /* Start ipg timer */
-diff --git a/drivers/net/ppp_async.c b/drivers/net/ppp_async.c
---- a/drivers/net/ppp_async.c
-+++ b/drivers/net/ppp_async.c
-@@ -1000,7 +1000,7 @@ static void async_lcp_peek(struct asyncp
- data += 4;
- dlen -= 4;
- /* data[0] is code, data[1] is length */
-- while (dlen >= 2 && dlen >= data[1]) {
-+ while (dlen >= 2 && dlen >= data[1] && data[1] >= 2) {
- switch (data[0]) {
- case LCP_MRU:
- val = (data[2] << 8) + data[3];
-diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
---- a/drivers/net/r8169.c
-+++ b/drivers/net/r8169.c
-@@ -1683,16 +1683,19 @@ static void rtl8169_free_rx_skb(struct r
- rtl8169_make_unusable_by_asic(desc);
- }
-
--static inline void rtl8169_return_to_asic(struct RxDesc *desc, int rx_buf_sz)
-+static inline void rtl8169_mark_to_asic(struct RxDesc *desc, u32 rx_buf_sz)
- {
-- desc->opts1 |= cpu_to_le32(DescOwn + rx_buf_sz);
-+ u32 eor = le32_to_cpu(desc->opts1) & RingEnd;
-+
-+ desc->opts1 = cpu_to_le32(DescOwn | eor | rx_buf_sz);
- }
-
--static inline void rtl8169_give_to_asic(struct RxDesc *desc, dma_addr_t
mapping,
-- int rx_buf_sz)
-+static inline void rtl8169_map_to_asic(struct RxDesc *desc, dma_addr_t
mapping,
-+ u32 rx_buf_sz)
- {
- desc->addr = cpu_to_le64(mapping);
-- desc->opts1 |= cpu_to_le32(DescOwn + rx_buf_sz);
-+ wmb();
-+ rtl8169_mark_to_asic(desc, rx_buf_sz);
- }
-
- static int rtl8169_alloc_rx_skb(struct pci_dev *pdev, struct sk_buff
**sk_buff,
-@@ -1712,7 +1715,7 @@ static int rtl8169_alloc_rx_skb(struct p
- mapping = pci_map_single(pdev, skb->tail, rx_buf_sz,
- PCI_DMA_FROMDEVICE);
-
-- rtl8169_give_to_asic(desc, mapping, rx_buf_sz);
-+ rtl8169_map_to_asic(desc, mapping, rx_buf_sz);
-
- out:
- return ret;
-@@ -2150,7 +2153,7 @@ static inline int rtl8169_try_rx_copy(st
- skb_reserve(skb, NET_IP_ALIGN);
- eth_copy_and_sum(skb, sk_buff[0]->tail, pkt_size, 0);
- *sk_buff = skb;
-- rtl8169_return_to_asic(desc, rx_buf_sz);
-+ rtl8169_mark_to_asic(desc, rx_buf_sz);
- ret = 0;
- }
- }
-diff --git a/drivers/net/sis900.c b/drivers/net/sis900.c
---- a/drivers/net/sis900.c
-+++ b/drivers/net/sis900.c
-@@ -236,7 +236,7 @@ static int __devinit sis900_get_mac_addr
- signature = (u16) read_eeprom(ioaddr, EEPROMSignature);
- if (signature == 0xffff || signature == 0x0000) {
- printk (KERN_INFO "%s: Error EERPOM read %x\n",
-- net_dev->name, signature);
-+ pci_name(pci_dev), signature);
- return 0;
- }
-
-@@ -268,7 +268,7 @@ static int __devinit sis630e_get_mac_add
- if (!isa_bridge)
- isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0018,
isa_bridge);
- if (!isa_bridge) {
-- printk("%s: Can not find ISA bridge\n", net_dev->name);
-+ printk("%s: Can not find ISA bridge\n", pci_name(pci_dev));
- return 0;
- }
- pci_read_config_byte(isa_bridge, 0x48, ®);
-@@ -456,10 +456,6 @@ static int __devinit sis900_probe(struct
- net_dev->tx_timeout = sis900_tx_timeout;
- net_dev->watchdog_timeo = TX_TIMEOUT;
- net_dev->ethtool_ops = &sis900_ethtool_ops;
--
-- ret = register_netdev(net_dev);
-- if (ret)
-- goto err_unmap_rx;
-
- /* Get Mac address according to the chip revision */
- pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &revision);
-@@ -476,7 +472,7 @@ static int __devinit sis900_probe(struct
-
- if (ret == 0) {
- ret = -ENODEV;
-- goto err_out_unregister;
-+ goto err_unmap_rx;
- }
-
- /* 630ET : set the mii access mode as software-mode */
-@@ -486,7 +482,7 @@ static int __devinit sis900_probe(struct
- /* probe for mii transceiver */
- if (sis900_mii_probe(net_dev) == 0) {
- ret = -ENODEV;
-- goto err_out_unregister;
-+ goto err_unmap_rx;
- }
-
- /* save our host bridge revision */
-@@ -496,6 +492,10 @@ static int __devinit sis900_probe(struct
- pci_dev_put(dev);
- }
-
-+ ret = register_netdev(net_dev);
-+ if (ret)
-+ goto err_unmap_rx;
-+
- /* print some information about our NIC */
- printk(KERN_INFO "%s: %s at %#lx, IRQ %d, ", net_dev->name,
- card_name, ioaddr, net_dev->irq);
-@@ -505,8 +505,6 @@ static int __devinit sis900_probe(struct
-
- return 0;
-
-- err_out_unregister:
-- unregister_netdev(net_dev);
- err_unmap_rx:
- pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
- sis_priv->rx_ring_dma);
-@@ -533,6 +531,7 @@ static int __devinit sis900_probe(struct
- static int __init sis900_mii_probe(struct net_device * net_dev)
- {
- struct sis900_private * sis_priv = net_dev->priv;
-+ const char *dev_name = pci_name(sis_priv->pci_dev);
- u16 poll_bit = MII_STAT_LINK, status = 0;
- unsigned long timeout = jiffies + 5 * HZ;
- int phy_addr;
-@@ -582,21 +581,20 @@ static int __init sis900_mii_probe(struc
- mii_phy->phy_types =
- (mii_status & (MII_STAT_CAN_TX_FDX
| MII_STAT_CAN_TX)) ? LAN : HOME;
- printk(KERN_INFO "%s: %s transceiver found at
address %d.\n",
-- net_dev->name, mii_chip_table[i].name,
-+ dev_name, mii_chip_table[i].name,
- phy_addr);
- break;
- }
-
- if( !mii_chip_table[i].phy_id1 ) {
- printk(KERN_INFO "%s: Unknown PHY transceiver found at
address %d.\n",
-- net_dev->name, phy_addr);
-+ dev_name, phy_addr);
- mii_phy->phy_types = UNKNOWN;
- }
- }
-
- if (sis_priv->mii == NULL) {
-- printk(KERN_INFO "%s: No MII transceivers found!\n",
-- net_dev->name);
-+ printk(KERN_INFO "%s: No MII transceivers found!\n", dev_name);
- return 0;
- }
-
-@@ -621,7 +619,7 @@ static int __init sis900_mii_probe(struc
- poll_bit ^= (mdio_read(net_dev, sis_priv->cur_phy,
MII_STATUS) & poll_bit);
- if (time_after_eq(jiffies, timeout)) {
- printk(KERN_WARNING "%s: reset phy and link
down now\n",
-- net_dev->name);
-+ dev_name);
- return -ETIME;
- }
- }
-@@ -691,7 +689,7 @@ static u16 sis900_default_phy(struct net
- sis_priv->mii = default_phy;
- sis_priv->cur_phy = default_phy->phy_addr;
- printk(KERN_INFO "%s: Using transceiver found at address %d as
default\n",
-- net_dev->name,sis_priv->cur_phy);
-+ pci_name(sis_priv->pci_dev), sis_priv->cur_phy);
- }
-
- status = mdio_read(net_dev, sis_priv->cur_phy, MII_CONTROL);
-diff --git a/drivers/net/tun.c b/drivers/net/tun.c
---- a/drivers/net/tun.c
-+++ b/drivers/net/tun.c
-@@ -229,7 +229,7 @@ static __inline__ ssize_t tun_get_user(s
- size_t len = count;
-
- if (!(tun->flags & TUN_NO_PI)) {
-- if ((len -= sizeof(pi)) > len)
-+ if ((len -= sizeof(pi)) > count)
- return -EINVAL;
-
- if(memcpy_fromiovec((void *)&pi, iv, sizeof(pi)))
-diff --git a/drivers/net/via-rhine.c b/drivers/net/via-rhine.c
---- a/drivers/net/via-rhine.c
-+++ b/drivers/net/via-rhine.c
-@@ -1197,8 +1197,10 @@ static int rhine_open(struct net_device
- dev->name, rp->pdev->irq);
-
- rc = alloc_ring(dev);
-- if (rc)
-+ if (rc) {
-+ free_irq(rp->pdev->irq, dev);
- return rc;
-+ }
- alloc_rbufs(dev);
- alloc_tbufs(dev);
- rhine_chip_reset(dev);
-@@ -1899,6 +1901,9 @@ static void rhine_shutdown (struct devic
- struct rhine_private *rp = netdev_priv(dev);
- void __iomem *ioaddr = rp->base;
-
-+ if (!(rp->quirks & rqWOL))
-+ return; /* Nothing to do for non-WOL adapters */
-+
- rhine_power_init(dev);
-
- /* Make sure we use pattern 0, 1 and not 4, 5 */
-diff --git a/drivers/net/wan/hd6457x.c b/drivers/net/wan/hd6457x.c
---- a/drivers/net/wan/hd6457x.c
-+++ b/drivers/net/wan/hd6457x.c
-@@ -315,7 +315,7 @@ static inline void sca_rx(card_t *card,
- #endif
- stats->rx_packets++;
- stats->rx_bytes += skb->len;
-- skb->dev->last_rx = jiffies;
-+ dev->last_rx = jiffies;
- skb->protocol = hdlc_type_trans(skb, dev);
- netif_rx(skb);
- }
-diff --git a/drivers/pci/hotplug/pciehp_ctrl.c
b/drivers/pci/hotplug/pciehp_ctrl.c
---- a/drivers/pci/hotplug/pciehp_ctrl.c
-+++ b/drivers/pci/hotplug/pciehp_ctrl.c
-@@ -1354,10 +1354,11 @@ static u32 remove_board(struct pci_func
- dbg("PCI Bridge Hot-Remove
s:b:d:f(%02x:%02x:%02x:%02x)\n",
- ctrl->seg, func->bus, func->device,
func->function);
- bridge_slot_remove(func);
-- } else
-+ } else {
- dbg("PCI Function Hot-Remove
s:b:d:f(%02x:%02x:%02x:%02x)\n",
- ctrl->seg, func->bus, func->device,
func->function);
- slot_remove(func);
-+ }
-
- func = pciehp_slot_find(ctrl->slot_bus, device, 0);
- }
-diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c
---- a/drivers/usb/serial/visor.c
-+++ b/drivers/usb/serial/visor.c
-@@ -386,6 +386,7 @@ struct visor_private {
- int bytes_in;
- int bytes_out;
- int outstanding_urbs;
-+ int throttled;
- };
-
- /* number of outstanding urbs to prevent userspace DoS from happening */
-@@ -415,6 +416,7 @@ static int visor_open (struct usb_serial
- priv->bytes_in = 0;
- priv->bytes_out = 0;
- priv->outstanding_urbs = 0;
-+ priv->throttled = 0;
- spin_unlock_irqrestore(&priv->lock, flags);
-
- /*
-@@ -602,6 +604,7 @@ static void visor_read_bulk_callback (st
- struct tty_struct *tty;
- unsigned long flags;
- int i;
-+ int throttled;
- int result;
-
- dbg("%s - port %d", __FUNCTION__, port->number);
-@@ -627,18 +630,21 @@ static void visor_read_bulk_callback (st
- }
- spin_lock_irqsave(&priv->lock, flags);
- priv->bytes_in += urb->actual_length;
-+ throttled = priv->throttled;
- spin_unlock_irqrestore(&priv->lock, flags);
-
-- /* Continue trying to always read */
-- usb_fill_bulk_urb (port->read_urb, port->serial->dev,
-- usb_rcvbulkpipe(port->serial->dev,
-- port->bulk_in_endpointAddress),
-- port->read_urb->transfer_buffer,
-- port->read_urb->transfer_buffer_length,
-- visor_read_bulk_callback, port);
-- result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
-- if (result)
-- dev_err(&port->dev, "%s - failed resubmitting read urb, error
%d\n", __FUNCTION__, result);
-+ /* Continue trying to always read if we should */
-+ if (!throttled) {
-+ usb_fill_bulk_urb (port->read_urb, port->serial->dev,
-+ usb_rcvbulkpipe(port->serial->dev,
-+
port->bulk_in_endpointAddress),
-+ port->read_urb->transfer_buffer,
-+ port->read_urb->transfer_buffer_length,
-+ visor_read_bulk_callback, port);
-+ result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
-+ if (result)
-+ dev_err(&port->dev, "%s - failed resubmitting read urb,
error %d\n", __FUNCTION__, result);
-+ }
- return;
- }
-
-@@ -683,16 +689,26 @@ exit:
-
- static void visor_throttle (struct usb_serial_port *port)
- {
-+ struct visor_private *priv = usb_get_serial_port_data(port);
-+ unsigned long flags;
-+
- dbg("%s - port %d", __FUNCTION__, port->number);
-- usb_kill_urb(port->read_urb);
-+ spin_lock_irqsave(&priv->lock, flags);
-+ priv->throttled = 1;
-+ spin_unlock_irqrestore(&priv->lock, flags);
- }
-
-
- static void visor_unthrottle (struct usb_serial_port *port)
- {
-+ struct visor_private *priv = usb_get_serial_port_data(port);
-+ unsigned long flags;
- int result;
-
- dbg("%s - port %d", __FUNCTION__, port->number);
-+ spin_lock_irqsave(&priv->lock, flags);
-+ priv->throttled = 0;
-+ spin_unlock_irqrestore(&priv->lock, flags);
-
- port->read_urb->dev = port->serial->dev;
- result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
-diff --git a/drivers/video/matrox/matroxfb_accel.c
b/drivers/video/matrox/matroxfb_accel.c
---- a/drivers/video/matrox/matroxfb_accel.c
-+++ b/drivers/video/matrox/matroxfb_accel.c
-@@ -438,13 +438,21 @@ static void matroxfb_1bpp_imageblit(WPMI
- } else if (step == 1) {
- /* Special case for 1..8bit widths */
- while (height--) {
-- mga_writel(mmio, 0, *chardata);
-+#if defined(__BIG_ENDIAN)
-+ fb_writel((*chardata) << 24, mmio.vaddr);
-+#else
-+ fb_writel(*chardata, mmio.vaddr);
-+#endif
- chardata++;
- }
- } else if (step == 2) {
- /* Special case for 9..15bit widths */
- while (height--) {
-- mga_writel(mmio, 0, *(u_int16_t*)chardata);
-+#if defined(__BIG_ENDIAN)
-+ fb_writel((*(u_int16_t*)chardata) << 16,
mmio.vaddr);
-+#else
-+ fb_writel(*(u_int16_t*)chardata, mmio.vaddr);
-+#endif
- chardata += 2;
- }
- } else {
-@@ -454,7 +462,7 @@ static void matroxfb_1bpp_imageblit(WPMI
-
- for (i = 0; i < step; i += 4) {
- /* Hope that there are at least three
readable bytes beyond the end of bitmap */
-- mga_writel(mmio, 0,
get_unaligned((u_int32_t*)(chardata + i)));
-+
fb_writel(get_unaligned((u_int32_t*)(chardata + i)),mmio.vaddr);
- }
- chardata += step;
- }
-diff --git a/drivers/video/matrox/matroxfb_base.h
b/drivers/video/matrox/matroxfb_base.h
---- a/drivers/video/matrox/matroxfb_base.h
-+++ b/drivers/video/matrox/matroxfb_base.h
-@@ -170,14 +170,14 @@ static inline void mga_memcpy_toio(vaddr
-
- if ((unsigned long)src & 3) {
- while (len >= 4) {
-- writel(get_unaligned((u32 *)src), addr);
-+ fb_writel(get_unaligned((u32 *)src), addr);
- addr++;
- len -= 4;
- src += 4;
- }
- } else {
- while (len >= 4) {
-- writel(*(u32 *)src, addr);
-+ fb_writel(*(u32 *)src, addr);
- addr++;
- len -= 4;
- src += 4;
-diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
---- a/fs/binfmt_elf.c
-+++ b/fs/binfmt_elf.c
-@@ -257,7 +257,7 @@ create_elf_tables(struct linux_binprm *b
- }
-
- /* Populate argv and envp */
-- p = current->mm->arg_start;
-+ p = current->mm->arg_end = current->mm->arg_start;
- while (argc-- > 0) {
- size_t len;
- __put_user((elf_addr_t)p, argv++);
-@@ -1008,6 +1008,7 @@ out_free_ph:
- static int load_elf_library(struct file *file)
- {
- struct elf_phdr *elf_phdata;
-+ struct elf_phdr *eppnt;
- unsigned long elf_bss, bss, len;
- int retval, error, i, j;
- struct elfhdr elf_ex;
-@@ -1031,44 +1032,47 @@ static int load_elf_library(struct file
- /* j < ELF_MIN_ALIGN because elf_ex.e_phnum <= 2 */
-
- error = -ENOMEM;
-- elf_phdata = (struct elf_phdr *) kmalloc(j, GFP_KERNEL);
-+ elf_phdata = kmalloc(j, GFP_KERNEL);
- if (!elf_phdata)
- goto out;
-
-+ eppnt = elf_phdata;
- error = -ENOEXEC;
-- retval = kernel_read(file, elf_ex.e_phoff, (char *) elf_phdata, j);
-+ retval = kernel_read(file, elf_ex.e_phoff, (char *)eppnt, j);
- if (retval != j)
- goto out_free_ph;
-
- for (j = 0, i = 0; i<elf_ex.e_phnum; i++)
-- if ((elf_phdata + i)->p_type == PT_LOAD) j++;
-+ if ((eppnt + i)->p_type == PT_LOAD)
-+ j++;
- if (j != 1)
- goto out_free_ph;
-
-- while (elf_phdata->p_type != PT_LOAD) elf_phdata++;
-+ while (eppnt->p_type != PT_LOAD)
-+ eppnt++;
-
- /* Now use mmap to map the library into memory. */
- down_write(¤t->mm->mmap_sem);
- error = do_mmap(file,
-- ELF_PAGESTART(elf_phdata->p_vaddr),
-- (elf_phdata->p_filesz +
-- ELF_PAGEOFFSET(elf_phdata->p_vaddr)),
-+ ELF_PAGESTART(eppnt->p_vaddr),
-+ (eppnt->p_filesz +
-+ ELF_PAGEOFFSET(eppnt->p_vaddr)),
- PROT_READ | PROT_WRITE | PROT_EXEC,
- MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE,
-- (elf_phdata->p_offset -
-- ELF_PAGEOFFSET(elf_phdata->p_vaddr)));
-+ (eppnt->p_offset -
-+ ELF_PAGEOFFSET(eppnt->p_vaddr)));
- up_write(¤t->mm->mmap_sem);
-- if (error != ELF_PAGESTART(elf_phdata->p_vaddr))
-+ if (error != ELF_PAGESTART(eppnt->p_vaddr))
- goto out_free_ph;
-
-- elf_bss = elf_phdata->p_vaddr + elf_phdata->p_filesz;
-+ elf_bss = eppnt->p_vaddr + eppnt->p_filesz;
- if (padzero(elf_bss)) {
- error = -EFAULT;
- goto out_free_ph;
- }
-
-- len = ELF_PAGESTART(elf_phdata->p_filesz + elf_phdata->p_vaddr +
ELF_MIN_ALIGN - 1);
-- bss = elf_phdata->p_memsz + elf_phdata->p_vaddr;
-+ len = ELF_PAGESTART(eppnt->p_filesz + eppnt->p_vaddr + ELF_MIN_ALIGN -
1);
-+ bss = eppnt->p_memsz + eppnt->p_vaddr;
- if (bss > len) {
- down_write(¤t->mm->mmap_sem);
- do_brk(len, bss - len);
-@@ -1275,7 +1279,7 @@ static void fill_prstatus(struct elf_prs
- static int fill_psinfo(struct elf_prpsinfo *psinfo, struct task_struct *p,
- struct mm_struct *mm)
- {
-- int i, len;
-+ unsigned int i, len;
-
- /* first copy the parameters from user space */
- memset(psinfo, 0, sizeof(struct elf_prpsinfo));
-diff --git a/fs/cramfs/inode.c b/fs/cramfs/inode.c
---- a/fs/cramfs/inode.c
-+++ b/fs/cramfs/inode.c
-@@ -70,6 +70,7 @@ static struct inode *get_cramfs_inode(st
- inode->i_data.a_ops = &cramfs_aops;
- } else {
- inode->i_size = 0;
-+ inode->i_blocks = 0;
- init_special_inode(inode, inode->i_mode,
- old_decode_dev(cramfs_inode->size));
- }
-diff --git a/fs/eventpoll.c b/fs/eventpoll.c
---- a/fs/eventpoll.c
-+++ b/fs/eventpoll.c
-@@ -619,6 +619,7 @@ eexit_1:
- return error;
- }
-
-+#define MAX_EVENTS (INT_MAX / sizeof(struct epoll_event))
-
- /*
- * Implement the event wait interface for the eventpoll file. It is the kernel
-@@ -635,7 +636,7 @@ asmlinkage long sys_epoll_wait(int epfd,
- current, epfd, events, maxevents, timeout));
-
- /* The maximum number of event must be greater than zero */
-- if (maxevents <= 0)
-+ if (maxevents <= 0 || maxevents > MAX_EVENTS)
- return -EINVAL;
-
- /* Verify that the area passed by the user is writeable */
-diff --git a/fs/exec.c b/fs/exec.c
---- a/fs/exec.c
-+++ b/fs/exec.c
-@@ -814,7 +814,7 @@ void get_task_comm(char *buf, struct tas
- {
- /* buf must be at least sizeof(tsk->comm) in size */
- task_lock(tsk);
-- memcpy(buf, tsk->comm, sizeof(tsk->comm));
-+ strncpy(buf, tsk->comm, sizeof(tsk->comm));
- task_unlock(tsk);
- }
-
-diff --git a/fs/ext2/dir.c b/fs/ext2/dir.c
---- a/fs/ext2/dir.c
-+++ b/fs/ext2/dir.c
-@@ -592,6 +592,7 @@ int ext2_make_empty(struct inode *inode,
- goto fail;
- }
- kaddr = kmap_atomic(page, KM_USER0);
-+ memset(kaddr, 0, chunk_size);
- de = (struct ext2_dir_entry_2 *)kaddr;
- de->name_len = 1;
- de->rec_len = cpu_to_le16(EXT2_DIR_REC_LEN(1));
-diff --git a/fs/ext3/balloc.c b/fs/ext3/balloc.c
---- a/fs/ext3/balloc.c
-+++ b/fs/ext3/balloc.c
-@@ -268,7 +268,8 @@ void ext3_discard_reservation(struct ino
-
- if (!rsv_is_empty(&rsv->rsv_window)) {
- spin_lock(rsv_lock);
-- rsv_window_remove(inode->i_sb, rsv);
-+ if (!rsv_is_empty(&rsv->rsv_window))
-+ rsv_window_remove(inode->i_sb, rsv);
- spin_unlock(rsv_lock);
- }
- }
-diff --git a/fs/hfs/mdb.c b/fs/hfs/mdb.c
---- a/fs/hfs/mdb.c
-+++ b/fs/hfs/mdb.c
-@@ -333,6 +333,8 @@ void hfs_mdb_close(struct super_block *s
- * Release the resources associated with the in-core MDB. */
- void hfs_mdb_put(struct super_block *sb)
- {
-+ if (!HFS_SB(sb))
-+ return;
- /* free the B-trees */
- hfs_btree_close(HFS_SB(sb)->ext_tree);
- hfs_btree_close(HFS_SB(sb)->cat_tree);
-@@ -340,4 +342,7 @@ void hfs_mdb_put(struct super_block *sb)
- /* free the buffers holding the primary and alternate MDBs */
- brelse(HFS_SB(sb)->mdb_bh);
- brelse(HFS_SB(sb)->alt_mdb_bh);
-+
-+ kfree(HFS_SB(sb));
-+ sb->s_fs_info = NULL;
- }
-diff --git a/fs/hfs/super.c b/fs/hfs/super.c
---- a/fs/hfs/super.c
-+++ b/fs/hfs/super.c
-@@ -263,7 +263,7 @@ static int hfs_fill_super(struct super_b
- res = -EINVAL;
- if (!parse_options((char *)data, sbi)) {
- hfs_warn("hfs_fs: unable to parse mount options.\n");
-- goto bail3;
-+ goto bail;
- }
-
- sb->s_op = &hfs_super_operations;
-@@ -276,7 +276,7 @@ static int hfs_fill_super(struct super_b
- hfs_warn("VFS: Can't find a HFS filesystem on dev
%s.\n",
- hfs_mdb_name(sb));
- res = -EINVAL;
-- goto bail2;
-+ goto bail;
- }
-
- /* try to get the root inode */
-@@ -306,10 +306,8 @@ bail_iput:
- iput(root_inode);
- bail_no_root:
- hfs_warn("hfs_fs: get root inode failed.\n");
-+bail:
- hfs_mdb_put(sb);
--bail2:
--bail3:
-- kfree(sbi);
- return res;
- }
-
-diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
---- a/fs/hfsplus/super.c
-+++ b/fs/hfsplus/super.c
-@@ -207,7 +207,9 @@ static void hfsplus_write_super(struct s
- static void hfsplus_put_super(struct super_block *sb)
- {
- dprint(DBG_SUPER, "hfsplus_put_super\n");
-- if (!(sb->s_flags & MS_RDONLY)) {
-+ if (!sb->s_fs_info)
-+ return;
-+ if (!(sb->s_flags & MS_RDONLY) && HFSPLUS_SB(sb).s_vhdr) {
- struct hfsplus_vh *vhdr = HFSPLUS_SB(sb).s_vhdr;
-
- vhdr->modify_date = hfsp_now2mt();
-@@ -223,6 +225,8 @@ static void hfsplus_put_super(struct sup
- iput(HFSPLUS_SB(sb).alloc_file);
- iput(HFSPLUS_SB(sb).hidden_dir);
- brelse(HFSPLUS_SB(sb).s_vhbh);
-+ kfree(sb->s_fs_info);
-+ sb->s_fs_info = NULL;
- }
-
- static int hfsplus_statfs(struct super_block *sb, struct kstatfs *buf)
-diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
---- a/fs/isofs/inode.c
-+++ b/fs/isofs/inode.c
-@@ -685,6 +685,8 @@ root_found:
- sbi->s_log_zone_size = isonum_723 (h_pri->logical_block_size);
- sbi->s_max_size = isonum_733(h_pri->volume_space_size);
- } else {
-+ if (!pri)
-+ goto out_freebh;
- rootp = (struct iso_directory_record *) pri->root_directory_record;
- sbi->s_nzones = isonum_733 (pri->volume_space_size);
- sbi->s_log_zone_size = isonum_723 (pri->logical_block_size);
-@@ -1395,6 +1397,9 @@ struct inode *isofs_iget(struct super_bl
- struct inode *inode;
- struct isofs_iget5_callback_data data;
-
-+ if (offset >= 1ul << sb->s_blocksize_bits)
-+ return NULL;
-+
- data.block = block;
- data.offset = offset;
-
-diff --git a/fs/isofs/rock.c b/fs/isofs/rock.c
---- a/fs/isofs/rock.c
-+++ b/fs/isofs/rock.c
-@@ -53,6 +53,7 @@
- if(LEN & 1) LEN++; \
- CHR = ((unsigned char *) DE) + LEN; \
- LEN = *((unsigned char *) DE) - LEN; \
-+ if (LEN<0) LEN=0; \
- if (ISOFS_SB(inode->i_sb)->s_rock_offset!=-1) \
- { \
- LEN-=ISOFS_SB(inode->i_sb)->s_rock_offset; \
-@@ -73,6 +74,10 @@
- offset1 = 0; \
- pbh = sb_bread(DEV->i_sb, block); \
- if(pbh){ \
-+ if (offset > pbh->b_size || offset + cont_size > pbh->b_size){ \
-+ brelse(pbh); \
-+ goto out; \
-+ } \
- memcpy(buffer + offset1, pbh->b_data + offset, cont_size - offset1); \
- brelse(pbh); \
- chr = (unsigned char *) buffer; \
-@@ -103,12 +108,13 @@ int get_rock_ridge_filename(struct iso_d
- struct rock_ridge * rr;
- int sig;
-
-- while (len > 1){ /* There may be one byte for padding somewhere */
-+ while (len > 2){ /* There may be one byte for padding somewhere */
- rr = (struct rock_ridge *) chr;
-- if (rr->len == 0) goto out; /* Something got screwed up here */
-+ if (rr->len < 3) goto out; /* Something got screwed up here */
- sig = isonum_721(chr);
- chr += rr->len;
- len -= rr->len;
-+ if (len < 0) goto out; /* corrupted isofs */
-
- switch(sig){
- case SIG('R','R'):
-@@ -122,6 +128,7 @@ int get_rock_ridge_filename(struct iso_d
- break;
- case SIG('N','M'):
- if (truncate) break;
-+ if (rr->len < 5) break;
- /*
- * If the flags are 2 or 4, this indicates '.' or '..'.
- * We don't want to do anything with this, because it
-@@ -186,12 +193,13 @@ parse_rock_ridge_inode_internal(struct i
- struct rock_ridge * rr;
- int rootflag;
-
-- while (len > 1){ /* There may be one byte for padding somewhere */
-+ while (len > 2){ /* There may be one byte for padding somewhere */
- rr = (struct rock_ridge *) chr;
-- if (rr->len == 0) goto out; /* Something got screwed up here */
-+ if (rr->len < 3) goto out; /* Something got screwed up here */
- sig = isonum_721(chr);
- chr += rr->len;
- len -= rr->len;
-+ if (len < 0) goto out; /* corrupted isofs */
-
- switch(sig){
- #ifndef CONFIG_ZISOFS /* No flag for SF or ZF */
-@@ -462,7 +470,7 @@ static int rock_ridge_symlink_readpage(s
- struct rock_ridge *rr;
-
- if (!ISOFS_SB(inode->i_sb)->s_rock)
-- panic ("Cannot have symlink with high sierra variant of iso
filesystem\n");
-+ goto error;
-
- block = ei->i_iget5_block;
- lock_kernel();
-@@ -487,13 +495,15 @@ static int rock_ridge_symlink_readpage(s
- SETUP_ROCK_RIDGE(raw_inode, chr, len);
-
- repeat:
-- while (len > 1) { /* There may be one byte for padding somewhere */
-+ while (len > 2) { /* There may be one byte for padding somewhere */
- rr = (struct rock_ridge *) chr;
-- if (rr->len == 0)
-+ if (rr->len < 3)
- goto out; /* Something got screwed up here */
- sig = isonum_721(chr);
- chr += rr->len;
- len -= rr->len;
-+ if (len < 0)
-+ goto out; /* corrupted isofs */
-
- switch (sig) {
- case SIG('R', 'R'):
-@@ -543,6 +553,7 @@ static int rock_ridge_symlink_readpage(s
- fail:
- brelse(bh);
- unlock_kernel();
-+ error:
- SetPageError(page);
- kunmap(page);
- unlock_page(page);
-diff --git a/fs/jbd/checkpoint.c b/fs/jbd/checkpoint.c
---- a/fs/jbd/checkpoint.c
-+++ b/fs/jbd/checkpoint.c
-@@ -339,8 +339,10 @@ int log_do_checkpoint(journal_t *journal
- }
- } while (jh != last_jh && !retry);
-
-- if (batch_count)
-+ if (batch_count) {
- __flush_batch(journal, bhs, &batch_count);
-+ retry = 1;
-+ }
-
- /*
- * If someone cleaned up this transaction while we slept, we're
-diff --git a/fs/jbd/transaction.c b/fs/jbd/transaction.c
---- a/fs/jbd/transaction.c
-+++ b/fs/jbd/transaction.c
-@@ -1775,10 +1775,10 @@ static int journal_unmap_buffer(journal_
- JBUFFER_TRACE(jh, "checkpointed: add to BJ_Forget");
- ret = __dispose_buffer(jh,
- journal->j_running_transaction);
-+ journal_put_journal_head(jh);
- spin_unlock(&journal->j_list_lock);
- jbd_unlock_bh_state(bh);
- spin_unlock(&journal->j_state_lock);
-- journal_put_journal_head(jh);
- return ret;
- } else {
- /* There is no currently-running transaction. So the
-@@ -1789,10 +1789,10 @@ static int journal_unmap_buffer(journal_
- JBUFFER_TRACE(jh, "give to committing trans");
- ret = __dispose_buffer(jh,
- journal->j_committing_transaction);
-+ journal_put_journal_head(jh);
- spin_unlock(&journal->j_list_lock);
- jbd_unlock_bh_state(bh);
- spin_unlock(&journal->j_state_lock);
-- journal_put_journal_head(jh);
- return ret;
- } else {
- /* The orphan record's transaction has
-@@ -1813,10 +1813,10 @@ static int journal_unmap_buffer(journal_
- journal->j_running_transaction);
- jh->b_next_transaction = NULL;
- }
-+ journal_put_journal_head(jh);
- spin_unlock(&journal->j_list_lock);
- jbd_unlock_bh_state(bh);
- spin_unlock(&journal->j_state_lock);
-- journal_put_journal_head(jh);
- return 0;
- } else {
- /* Good, the buffer belongs to the running transaction.
-diff --git a/include/asm-x86_64/processor.h b/include/asm-x86_64/processor.h
---- a/include/asm-x86_64/processor.h
-+++ b/include/asm-x86_64/processor.h
-@@ -160,9 +160,9 @@ static inline void clear_in_cr4 (unsigne
-
-
- /*
-- * User space process size. 47bits.
-+ * User space process size. 47bits minus one guard page.
- */
--#define TASK_SIZE (0x800000000000UL)
-+#define TASK_SIZE (0x800000000000UL - 4096)
-
- /* This decides where the kernel will search for a free chunk of vm
- * space during mmap's.
-diff --git a/include/linux/err.h b/include/linux/err.h
---- a/include/linux/err.h
-+++ b/include/linux/err.h
-@@ -13,6 +13,8 @@
- * This should be a per-architecture thing, to allow different
- * error and pointer decisions.
- */
-+#define IS_ERR_VALUE(x) unlikely((x) > (unsigned long)-1000L)
-+
- static inline void *ERR_PTR(long error)
- {
- return (void *) error;
-@@ -25,7 +27,7 @@ static inline long PTR_ERR(const void *p
-
- static inline long IS_ERR(const void *ptr)
- {
-- return unlikely((unsigned long)ptr > (unsigned long)-1000L);
-+ return IS_ERR_VALUE((unsigned long)ptr);
- }
-
- #endif /* _LINUX_ERR_H */
-diff --git a/kernel/exit.c b/kernel/exit.c
---- a/kernel/exit.c
-+++ b/kernel/exit.c
-@@ -516,8 +516,6 @@ static inline void choose_new_parent(tas
- */
- BUG_ON(p == reaper || reaper->exit_state >= EXIT_ZOMBIE);
- p->real_parent = reaper;
-- if (p->parent == p->real_parent)
-- BUG();
- }
-
- static inline void reparent_thread(task_t *p, task_t *father, int traced)
-diff --git a/kernel/signal.c b/kernel/signal.c
---- a/kernel/signal.c
-+++ b/kernel/signal.c
-@@ -1728,6 +1728,7 @@ do_signal_stop(int signr)
- * with another processor delivering a stop signal,
- * then the SIGCONT that wakes us up should clear it.
- */
-+ read_unlock(&tasklist_lock);
- return 0;
- }
-
-diff --git a/lib/rwsem-spinlock.c b/lib/rwsem-spinlock.c
---- a/lib/rwsem-spinlock.c
-+++ b/lib/rwsem-spinlock.c
-@@ -140,12 +140,12 @@ void fastcall __sched __down_read(struct
-
- rwsemtrace(sem, "Entering __down_read");
-
-- spin_lock(&sem->wait_lock);
-+ spin_lock_irq(&sem->wait_lock);
-
- if (sem->activity >= 0 && list_empty(&sem->wait_list)) {
- /* granted */
- sem->activity++;
-- spin_unlock(&sem->wait_lock);
-+ spin_unlock_irq(&sem->wait_lock);
- goto out;
- }
-
-@@ -160,7 +160,7 @@ void fastcall __sched __down_read(struct
- list_add_tail(&waiter.list, &sem->wait_list);
-
- /* we don't need to touch the semaphore struct anymore */
-- spin_unlock(&sem->wait_lock);
-+ spin_unlock_irq(&sem->wait_lock);
-
- /* wait to be given the lock */
- for (;;) {
-@@ -181,10 +181,12 @@ void fastcall __sched __down_read(struct
- */
- int fastcall __down_read_trylock(struct rw_semaphore *sem)
- {
-+ unsigned long flags;
- int ret = 0;
-+
- rwsemtrace(sem, "Entering __down_read_trylock");
-
-- spin_lock(&sem->wait_lock);
-+ spin_lock_irqsave(&sem->wait_lock, flags);
-
- if (sem->activity >= 0 && list_empty(&sem->wait_list)) {
- /* granted */
-@@ -192,7 +194,7 @@ int fastcall __down_read_trylock(struct
- ret = 1;
- }
-
-- spin_unlock(&sem->wait_lock);
-+ spin_unlock_irqrestore(&sem->wait_lock, flags);
-
- rwsemtrace(sem, "Leaving __down_read_trylock");
- return ret;
-@@ -209,12 +211,12 @@ void fastcall __sched __down_write(struc
-
- rwsemtrace(sem, "Entering __down_write");
-
-- spin_lock(&sem->wait_lock);
-+ spin_lock_irq(&sem->wait_lock);
-
- if (sem->activity == 0 && list_empty(&sem->wait_list)) {
- /* granted */
- sem->activity = -1;
-- spin_unlock(&sem->wait_lock);
-+ spin_unlock_irq(&sem->wait_lock);
- goto out;
- }
-
-@@ -229,7 +231,7 @@ void fastcall __sched __down_write(struc
- list_add_tail(&waiter.list, &sem->wait_list);
-
- /* we don't need to touch the semaphore struct anymore */
-- spin_unlock(&sem->wait_lock);
-+ spin_unlock_irq(&sem->wait_lock);
-
- /* wait to be given the lock */
- for (;;) {
-@@ -250,10 +252,12 @@ void fastcall __sched __down_write(struc
- */
- int fastcall __down_write_trylock(struct rw_semaphore *sem)
- {
-+ unsigned long flags;
- int ret = 0;
-+
- rwsemtrace(sem, "Entering __down_write_trylock");
-
-- spin_lock(&sem->wait_lock);
-+ spin_lock_irqsave(&sem->wait_lock, flags);
-
- if (sem->activity == 0 && list_empty(&sem->wait_list)) {
- /* granted */
-@@ -261,7 +265,7 @@ int fastcall __down_write_trylock(struct
- ret = 1;
- }
-
-- spin_unlock(&sem->wait_lock);
-+ spin_unlock_irqrestore(&sem->wait_lock, flags);
-
- rwsemtrace(sem, "Leaving __down_write_trylock");
- return ret;
-@@ -272,14 +276,16 @@ int fastcall __down_write_trylock(struct
- */
- void fastcall __up_read(struct rw_semaphore *sem)
- {
-+ unsigned long flags;
-+
- rwsemtrace(sem, "Entering __up_read");
-
-- spin_lock(&sem->wait_lock);
-+ spin_lock_irqsave(&sem->wait_lock, flags);
-
- if (--sem->activity == 0 && !list_empty(&sem->wait_list))
- sem = __rwsem_wake_one_writer(sem);
-
-- spin_unlock(&sem->wait_lock);
-+ spin_unlock_irqrestore(&sem->wait_lock, flags);
-
- rwsemtrace(sem, "Leaving __up_read");
- }
-@@ -289,15 +295,17 @@ void fastcall __up_read(struct rw_semaph
- */
- void fastcall __up_write(struct rw_semaphore *sem)
- {
-+ unsigned long flags;
-+
- rwsemtrace(sem, "Entering __up_write");
-
-- spin_lock(&sem->wait_lock);
-+ spin_lock_irqsave(&sem->wait_lock, flags);
-
- sem->activity = 0;
- if (!list_empty(&sem->wait_list))
- sem = __rwsem_do_wake(sem, 1);
-
-- spin_unlock(&sem->wait_lock);
-+ spin_unlock_irqrestore(&sem->wait_lock, flags);
-
- rwsemtrace(sem, "Leaving __up_write");
- }
-@@ -308,15 +316,17 @@ void fastcall __up_write(struct rw_semap
- */
- void fastcall __downgrade_write(struct rw_semaphore *sem)
- {
-+ unsigned long flags;
-+
- rwsemtrace(sem, "Entering __downgrade_write");
-
-- spin_lock(&sem->wait_lock);
-+ spin_lock_irqsave(&sem->wait_lock, flags);
-
- sem->activity = 1;
- if (!list_empty(&sem->wait_list))
- sem = __rwsem_do_wake(sem, 0);
-
-- spin_unlock(&sem->wait_lock);
-+ spin_unlock_irqrestore(&sem->wait_lock, flags);
-
- rwsemtrace(sem, "Leaving __downgrade_write");
- }
-diff --git a/lib/rwsem.c b/lib/rwsem.c
---- a/lib/rwsem.c
-+++ b/lib/rwsem.c
-@@ -150,7 +150,7 @@ rwsem_down_failed_common(struct rw_semap
- set_task_state(tsk, TASK_UNINTERRUPTIBLE);
-
- /* set up my own style of waitqueue */
-- spin_lock(&sem->wait_lock);
-+ spin_lock_irq(&sem->wait_lock);
- waiter->task = tsk;
- get_task_struct(tsk);
-
-@@ -163,7 +163,7 @@ rwsem_down_failed_common(struct rw_semap
- if (!(count & RWSEM_ACTIVE_MASK))
- sem = __rwsem_do_wake(sem, 0);
-
-- spin_unlock(&sem->wait_lock);
-+ spin_unlock_irq(&sem->wait_lock);
-
- /* wait to be given the lock */
- for (;;) {
-@@ -219,15 +219,17 @@ rwsem_down_write_failed(struct rw_semaph
- */
- struct rw_semaphore fastcall *rwsem_wake(struct rw_semaphore *sem)
- {
-+ unsigned long flags;
-+
- rwsemtrace(sem, "Entering rwsem_wake");
-
-- spin_lock(&sem->wait_lock);
-+ spin_lock_irqsave(&sem->wait_lock, flags);
-
- /* do nothing if list empty */
- if (!list_empty(&sem->wait_list))
- sem = __rwsem_do_wake(sem, 0);
-
-- spin_unlock(&sem->wait_lock);
-+ spin_unlock_irqrestore(&sem->wait_lock, flags);
-
- rwsemtrace(sem, "Leaving rwsem_wake");
-
-@@ -241,15 +243,17 @@ struct rw_semaphore fastcall *rwsem_wake
- */
- struct rw_semaphore fastcall *rwsem_downgrade_wake(struct rw_semaphore *sem)
- {
-+ unsigned long flags;
-+
- rwsemtrace(sem, "Entering rwsem_downgrade_wake");
-
-- spin_lock(&sem->wait_lock);
-+ spin_lock_irqsave(&sem->wait_lock, flags);
-
- /* do nothing if list empty */
- if (!list_empty(&sem->wait_list))
- sem = __rwsem_do_wake(sem, 1);
-
-- spin_unlock(&sem->wait_lock);
-+ spin_unlock_irqrestore(&sem->wait_lock, flags);
-
- rwsemtrace(sem, "Leaving rwsem_downgrade_wake");
- return sem;
-diff --git a/mm/mmap.c b/mm/mmap.c
---- a/mm/mmap.c
-+++ b/mm/mmap.c
-@@ -1315,37 +1315,40 @@ unsigned long
- get_unmapped_area(struct file *file, unsigned long addr, unsigned long len,
- unsigned long pgoff, unsigned long flags)
- {
-- if (flags & MAP_FIXED) {
-- unsigned long ret;
-+ unsigned long ret;
-
-- if (addr > TASK_SIZE - len)
-- return -ENOMEM;
-- if (addr & ~PAGE_MASK)
-- return -EINVAL;
-- if (file && is_file_hugepages(file)) {
-- /*
-- * Check if the given range is hugepage aligned, and
-- * can be made suitable for hugepages.
-- */
-- ret = prepare_hugepage_range(addr, len);
-- } else {
-- /*
-- * Ensure that a normal request is not falling in a
-- * reserved hugepage range. For some archs like IA-64,
-- * there is a separate region for hugepages.
-- */
-- ret = is_hugepage_only_range(addr, len);
-- }
-- if (ret)
-- return -EINVAL;
-- return addr;
-- }
-+ if (!(flags & MAP_FIXED)) {
-+ unsigned long (*get_area)(struct file *, unsigned long,
unsigned long, unsigned long, unsigned long);
-
-- if (file && file->f_op && file->f_op->get_unmapped_area)
-- return file->f_op->get_unmapped_area(file, addr, len,
-- pgoff, flags);
-+ get_area = current->mm->get_unmapped_area;
-+ if (file && file->f_op && file->f_op->get_unmapped_area)
-+ get_area = file->f_op->get_unmapped_area;
-+ addr = get_area(file, addr, len, pgoff, flags);
-+ if (IS_ERR_VALUE(addr))
-+ return addr;
-+ }
-
-- return current->mm->get_unmapped_area(file, addr, len, pgoff, flags);
-+ if (addr > TASK_SIZE - len)
-+ return -ENOMEM;
-+ if (addr & ~PAGE_MASK)
-+ return -EINVAL;
-+ if (file && is_file_hugepages(file)) {
-+ /*
-+ * Check if the given range is hugepage aligned, and
-+ * can be made suitable for hugepages.
-+ */
-+ ret = prepare_hugepage_range(addr, len);
-+ } else {
-+ /*
-+ * Ensure that a normal request is not falling in a
-+ * reserved hugepage range. For some archs like IA-64,
-+ * there is a separate region for hugepages.
-+ */
-+ ret = is_hugepage_only_range(addr, len);
-+ }
-+ if (ret)
-+ return -EINVAL;
-+ return addr;
- }
-
- EXPORT_SYMBOL(get_unmapped_area);
-diff --git a/mm/rmap.c b/mm/rmap.c
---- a/mm/rmap.c
-+++ b/mm/rmap.c
-@@ -641,7 +641,7 @@ static void try_to_unmap_cluster(unsigne
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
-- pte_t *pte;
-+ pte_t *pte, *original_pte;
- pte_t pteval;
- struct page *page;
- unsigned long address;
-@@ -673,7 +673,7 @@ static void try_to_unmap_cluster(unsigne
- if (!pmd_present(*pmd))
- goto out_unlock;
-
-- for (pte = pte_offset_map(pmd, address);
-+ for (original_pte = pte = pte_offset_map(pmd, address);
- address < end; pte++, address += PAGE_SIZE) {
-
- if (!pte_present(*pte))
-@@ -710,7 +710,7 @@ static void try_to_unmap_cluster(unsigne
- (*mapcount)--;
- }
-
-- pte_unmap(pte);
-+ pte_unmap(original_pte);
-
- out_unlock:
- spin_unlock(&mm->page_table_lock);
-diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
---- a/net/bluetooth/af_bluetooth.c
-+++ b/net/bluetooth/af_bluetooth.c
-@@ -64,7 +64,7 @@ static kmem_cache_t *bt_sock_cache;
-
- int bt_sock_register(int proto, struct net_proto_family *ops)
- {
-- if (proto >= BT_MAX_PROTO)
-+ if (proto < 0 || proto >= BT_MAX_PROTO)
- return -EINVAL;
-
- if (bt_proto[proto])
-@@ -77,7 +77,7 @@ EXPORT_SYMBOL(bt_sock_register);
-
- int bt_sock_unregister(int proto)
- {
-- if (proto >= BT_MAX_PROTO)
-+ if (proto < 0 || proto >= BT_MAX_PROTO)
- return -EINVAL;
-
- if (!bt_proto[proto])
-@@ -92,7 +92,7 @@ static int bt_sock_create(struct socket
- {
- int err = 0;
-
-- if (proto >= BT_MAX_PROTO)
-+ if (proto < 0 || proto >= BT_MAX_PROTO)
- return -EINVAL;
-
- #if defined(CONFIG_KMOD)
-diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c
---- a/net/bridge/br_input.c
-+++ b/net/bridge/br_input.c
-@@ -54,6 +54,9 @@ int br_handle_frame_finish(struct sk_buf
- struct net_bridge_fdb_entry *dst;
- int passedup = 0;
-
-+ /* insert into forwarding database after filtering to avoid spoofing */
-+ br_fdb_insert(p->br, p, eth_hdr(skb)->h_source, 0);
-+
- if (br->dev->flags & IFF_PROMISC) {
- struct sk_buff *skb2;
-
-@@ -108,8 +111,7 @@ int br_handle_frame(struct net_bridge_po
- if (eth_hdr(skb)->h_source[0] & 1)
- goto err;
-
-- if (p->state == BR_STATE_LEARNING ||
-- p->state == BR_STATE_FORWARDING)
-+ if (p->state == BR_STATE_LEARNING)
- br_fdb_insert(p->br, p, eth_hdr(skb)->h_source, 0);
-
- if (p->br->stp_enabled &&
-diff --git a/net/bridge/br_stp_bpdu.c b/net/bridge/br_stp_bpdu.c
---- a/net/bridge/br_stp_bpdu.c
-+++ b/net/bridge/br_stp_bpdu.c
-@@ -140,6 +140,9 @@ int br_stp_handle_bpdu(struct sk_buff *s
- struct net_bridge *br = p->br;
- unsigned char *buf;
-
-+ /* insert into forwarding database after filtering to avoid spoofing */
-+ br_fdb_insert(p->br, p, eth_hdr(skb)->h_source, 0);
-+
- /* need at least the 802 and STP headers */
- if (!pskb_may_pull(skb, sizeof(header)+1) ||
- memcmp(skb->data, header, sizeof(header)))
-diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
---- a/net/bridge/netfilter/ebtables.c
-+++ b/net/bridge/netfilter/ebtables.c
-@@ -179,9 +179,10 @@ unsigned int ebt_do_table (unsigned int
- struct ebt_chainstack *cs;
- struct ebt_entries *chaininfo;
- char *base;
-- struct ebt_table_info *private = table->private;
-+ struct ebt_table_info *private;
-
- read_lock_bh(&table->lock);
-+ private = table->private;
- cb_base = COUNTER_BASE(private->counters, private->nentries,
- smp_processor_id());
- if (private->chainstack)
-diff --git a/net/ipv4/fib_hash.c b/net/ipv4/fib_hash.c
---- a/net/ipv4/fib_hash.c
-+++ b/net/ipv4/fib_hash.c
-@@ -919,13 +919,23 @@ out:
- return fa;
- }
-
-+static struct fib_alias *fib_get_idx(struct seq_file *seq, loff_t pos)
-+{
-+ struct fib_alias *fa = fib_get_first(seq);
-+
-+ if (fa)
-+ while (pos && (fa = fib_get_next(seq)))
-+ --pos;
-+ return pos ? NULL : fa;
-+}
-+
- static void *fib_seq_start(struct seq_file *seq, loff_t *pos)
- {
- void *v = NULL;
-
- read_lock(&fib_hash_lock);
- if (ip_fib_main_table)
-- v = *pos ? fib_get_next(seq) : SEQ_START_TOKEN;
-+ v = *pos ? fib_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
- return v;
- }
-
-diff --git a/net/ipv4/netfilter/ip_queue.c b/net/ipv4/netfilter/ip_queue.c
---- a/net/ipv4/netfilter/ip_queue.c
-+++ b/net/ipv4/netfilter/ip_queue.c
-@@ -3,6 +3,7 @@
- * communicating with userspace via netlink.
- *
- * (C) 2000-2002 James Morris <jmorris@xxxxxxxxxxxxxxxx>
-+ * (C) 2003-2005 Netfilter Core Team <coreteam@xxxxxxxxxxxxx>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
-@@ -14,6 +15,7 @@
- * Zander).
- * 2000-08-01: Added Nick Williams' MAC support.
- * 2002-06-25: Code cleanup.
-+ * 2005-05-26: local_bh_{disable,enable} around nf_reinject (Harald Welte)
- *
- */
- #include <linux/module.h>
-@@ -66,7 +68,15 @@ static DECLARE_MUTEX(ipqnl_sem);
- static void
- ipq_issue_verdict(struct ipq_queue_entry *entry, int verdict)
- {
-+ /* TCP input path (and probably other bits) assume to be called
-+ * from softirq context, not from syscall, like ipq_issue_verdict is
-+ * called. TCP input path deadlocks with locks taken from timer
-+ * softirq, e.g. We therefore emulate this by local_bh_disable() */
-+
-+ local_bh_disable();
- nf_reinject(entry->skb, entry->info, verdict);
-+ local_bh_enable();
-+
- kfree(entry);
- }
-
-diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
---- a/net/ipv4/tcp_input.c
-+++ b/net/ipv4/tcp_input.c
-@@ -1653,7 +1653,10 @@ static void DBGUNDO(struct sock *sk, str
- static void tcp_undo_cwr(struct tcp_sock *tp, int undo)
- {
- if (tp->prior_ssthresh) {
-- tp->snd_cwnd = max(tp->snd_cwnd, tp->snd_ssthresh<<1);
-+ if (tcp_is_bic(tp))
-+ tp->snd_cwnd = max(tp->snd_cwnd,
tp->bictcp.last_max_cwnd);
-+ else
-+ tp->snd_cwnd = max(tp->snd_cwnd, tp->snd_ssthresh<<1);
-
- if (undo && tp->prior_ssthresh > tp->snd_ssthresh) {
- tp->snd_ssthresh = tp->prior_ssthresh;
-diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
---- a/net/ipv4/tcp_timer.c
-+++ b/net/ipv4/tcp_timer.c
-@@ -38,6 +38,7 @@ static void tcp_keepalive_timer (unsigne
-
- #ifdef TCP_DEBUG
- const char tcp_timer_bug_msg[] = KERN_DEBUG "tcpbug: unknown timer value\n";
-+EXPORT_SYMBOL(tcp_timer_bug_msg);
- #endif
-
- /*
-diff --git a/net/ipv4/xfrm4_output.c b/net/ipv4/xfrm4_output.c
---- a/net/ipv4/xfrm4_output.c
-+++ b/net/ipv4/xfrm4_output.c
-@@ -103,17 +103,17 @@ int xfrm4_output(struct sk_buff *skb)
- goto error_nolock;
- }
-
-- spin_lock_bh(&x->lock);
-- err = xfrm_state_check(x, skb);
-- if (err)
-- goto error;
--
- if (x->props.mode) {
- err = xfrm4_tunnel_check_size(skb);
- if (err)
-- goto error;
-+ goto error_nolock;
- }
-
-+ spin_lock_bh(&x->lock);
-+ err = xfrm_state_check(x, skb);
-+ if (err)
-+ goto error;
-+
- xfrm4_encap(skb);
-
- err = x->type->output(skb);
-diff --git a/net/ipv6/xfrm6_output.c b/net/ipv6/xfrm6_output.c
---- a/net/ipv6/xfrm6_output.c
-+++ b/net/ipv6/xfrm6_output.c
-@@ -103,17 +103,17 @@ int xfrm6_output(struct sk_buff *skb)
- goto error_nolock;
- }
-
-- spin_lock_bh(&x->lock);
-- err = xfrm_state_check(x, skb);
-- if (err)
-- goto error;
--
- if (x->props.mode) {
- err = xfrm6_tunnel_check_size(skb);
- if (err)
-- goto error;
-+ goto error_nolock;
- }
-
-+ spin_lock_bh(&x->lock);
-+ err = xfrm_state_check(x, skb);
-+ if (err)
-+ goto error;
-+
- xfrm6_encap(skb);
-
- err = x->type->output(skb);
-diff --git a/net/netrom/nr_in.c b/net/netrom/nr_in.c
---- a/net/netrom/nr_in.c
-+++ b/net/netrom/nr_in.c
-@@ -74,7 +74,6 @@ static int nr_queue_rx_frame(struct sock
- static int nr_state1_machine(struct sock *sk, struct sk_buff *skb,
- int frametype)
- {
-- bh_lock_sock(sk);
- switch (frametype) {
- case NR_CONNACK: {
- nr_cb *nr = nr_sk(sk);
-@@ -103,8 +102,6 @@ static int nr_state1_machine(struct sock
- default:
- break;
- }
-- bh_unlock_sock(sk);
--
- return 0;
- }
-
-@@ -116,7 +113,6 @@ static int nr_state1_machine(struct sock
- static int nr_state2_machine(struct sock *sk, struct sk_buff *skb,
- int frametype)
- {
-- bh_lock_sock(sk);
- switch (frametype) {
- case NR_CONNACK | NR_CHOKE_FLAG:
- nr_disconnect(sk, ECONNRESET);
-@@ -132,8 +128,6 @@ static int nr_state2_machine(struct sock
- default:
- break;
- }
-- bh_unlock_sock(sk);
--
- return 0;
- }
-
-@@ -154,7 +148,6 @@ static int nr_state3_machine(struct sock
- nr = skb->data[18];
- ns = skb->data[17];
-
-- bh_lock_sock(sk);
- switch (frametype) {
- case NR_CONNREQ:
- nr_write_internal(sk, NR_CONNACK);
-@@ -265,8 +258,6 @@ static int nr_state3_machine(struct sock
- default:
- break;
- }
-- bh_unlock_sock(sk);
--
- return queued;
- }
-
-diff --git a/net/rose/rose_route.c b/net/rose/rose_route.c
---- a/net/rose/rose_route.c
-+++ b/net/rose/rose_route.c
-@@ -727,7 +727,8 @@ int rose_rt_ioctl(unsigned int cmd, void
- }
- if (rose_route.mask > 10) /* Mask can't be more than 10 digits
*/
- return -EINVAL;
--
-+ if (rose_route.ndigis > 8) /* No more than 8 digipeats */
-+ return -EINVAL;
- err = rose_add_node(&rose_route, dev);
- dev_put(dev);
- return err;
-diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
---- a/net/sched/sch_netem.c
-+++ b/net/sched/sch_netem.c
-@@ -184,10 +184,15 @@ static int netem_enqueue(struct sk_buff
- /* Random duplication */
- if (q->duplicate && q->duplicate >= get_crandom(&q->dup_cor)) {
- struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC);
--
-- pr_debug("netem_enqueue: dup %p\n", skb2);
-- if (skb2)
-- delay_skb(sch, skb2);
-+ if (skb2) {
-+ struct Qdisc *rootq = sch->dev->qdisc;
-+ u32 dupsave = q->duplicate;
-+
-+ /* prevent duplicating a dup... */
-+ q->duplicate = 0;
-+ rootq->enqueue(skb2, rootq);
-+ q->duplicate = dupsave;
-+ }
- }
-
- /* If doing simple delay then gap == 0 so all packets
-diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
---- a/net/xfrm/xfrm_state.c
-+++ b/net/xfrm/xfrm_state.c
-@@ -609,7 +609,7 @@ static struct xfrm_state *__xfrm_find_ac
-
- for (i = 0; i < XFRM_DST_HSIZE; i++) {
- list_for_each_entry(x, xfrm_state_bydst+i, bydst) {
-- if (x->km.seq == seq) {
-+ if (x->km.seq == seq && x->km.state == XFRM_STATE_ACQ) {
- xfrm_state_hold(x);
- return x;
- }
-diff --git a/security/keys/key.c b/security/keys/key.c
---- a/security/keys/key.c
-+++ b/security/keys/key.c
-@@ -57,9 +57,10 @@ struct key_user *key_user_lookup(uid_t u
- {
- struct key_user *candidate = NULL, *user;
- struct rb_node *parent = NULL;
-- struct rb_node **p = &key_user_tree.rb_node;
-+ struct rb_node **p;
-
- try_again:
-+ p = &key_user_tree.rb_node;
- spin_lock(&key_user_lock);
-
- /* search the tree for a user record with a matching UID */
-diff --git a/sound/core/timer.c b/sound/core/timer.c
---- a/sound/core/timer.c
-+++ b/sound/core/timer.c
-@@ -1117,7 +1117,8 @@ static void snd_timer_user_append_to_tqu
- if (tu->qused >= tu->queue_size) {
- tu->overrun++;
- } else {
-- memcpy(&tu->queue[tu->qtail++], tread, sizeof(*tread));
-+ memcpy(&tu->tqueue[tu->qtail++], tread, sizeof(*tread));
-+ tu->qtail %= tu->queue_size;
- tu->qused++;
- }
- }
-@@ -1140,6 +1141,8 @@ static void snd_timer_user_ccallback(snd
- spin_lock(&tu->qlock);
- snd_timer_user_append_to_tqueue(tu, &r1);
- spin_unlock(&tu->qlock);
-+ kill_fasync(&tu->fasync, SIGIO, POLL_IN);
-+ wake_up(&tu->qchange_sleep);
- }
-
- static void snd_timer_user_tinterrupt(snd_timer_instance_t *timeri,
-diff --git a/sound/pci/ac97/ac97_codec.c b/sound/pci/ac97/ac97_codec.c
---- a/sound/pci/ac97/ac97_codec.c
-+++ b/sound/pci/ac97/ac97_codec.c
-@@ -1185,7 +1185,7 @@ snd_kcontrol_t *snd_ac97_cnew(const snd_
- /*
- * create mute switch(es) for normal stereo controls
- */
--static int snd_ac97_cmute_new(snd_card_t *card, char *name, int reg, ac97_t
*ac97)
-+static int snd_ac97_cmute_new_stereo(snd_card_t *card, char *name, int reg,
int check_stereo, ac97_t *ac97)
- {
- snd_kcontrol_t *kctl;
- int err;
-@@ -1196,7 +1196,7 @@ static int snd_ac97_cmute_new(snd_card_t
-
- mute_mask = 0x8000;
- val = snd_ac97_read(ac97, reg);
-- if (ac97->flags & AC97_STEREO_MUTES) {
-+ if (check_stereo || (ac97->flags & AC97_STEREO_MUTES)) {
- /* check whether both mute bits work */
- val1 = val | 0x8080;
- snd_ac97_write(ac97, reg, val1);
-@@ -1254,7 +1254,7 @@ static int snd_ac97_cvol_new(snd_card_t
- /*
- * create a mute-switch and a volume for normal stereo/mono controls
- */
--static int snd_ac97_cmix_new(snd_card_t *card, const char *pfx, int reg,
ac97_t *ac97)
-+static int snd_ac97_cmix_new_stereo(snd_card_t *card, const char *pfx, int
reg, int check_stereo, ac97_t *ac97)
- {
- int err;
- char name[44];
-@@ -1265,7 +1265,7 @@ static int snd_ac97_cmix_new(snd_card_t
-
- if (snd_ac97_try_bit(ac97, reg, 15)) {
- sprintf(name, "%s Switch", pfx);
-- if ((err = snd_ac97_cmute_new(card, name, reg, ac97)) < 0)
-+ if ((err = snd_ac97_cmute_new_stereo(card, name, reg,
check_stereo, ac97)) < 0)
- return err;
- }
- check_volume_resolution(ac97, reg, &lo_max, &hi_max);
-@@ -1277,6 +1277,8 @@ static int snd_ac97_cmix_new(snd_card_t
- return 0;
- }
-
-+#define snd_ac97_cmix_new(card, pfx, reg, ac97)
snd_ac97_cmix_new_stereo(card, pfx, reg, 0, ac97)
-+#define snd_ac97_cmute_new(card, name, reg, ac97)
snd_ac97_cmute_new_stereo(card, name, reg, 0, ac97)
-
- static unsigned int snd_ac97_determine_spdif_rates(ac97_t *ac97);
-
-@@ -1327,7 +1329,8 @@ static int snd_ac97_mixer_build(ac97_t *
-
- /* build surround controls */
- if (snd_ac97_try_volume_mix(ac97, AC97_SURROUND_MASTER)) {
-- if ((err = snd_ac97_cmix_new(card, "Surround Playback",
AC97_SURROUND_MASTER, ac97)) < 0)
-+ /* Surround Master (0x38) is with stereo mutes */
-+ if ((err = snd_ac97_cmix_new_stereo(card, "Surround Playback",
AC97_SURROUND_MASTER, 1, ac97)) < 0)
- return err;
- }
-
-diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
---- a/sound/usb/usbaudio.c
-+++ b/sound/usb/usbaudio.c
-@@ -3276,7 +3276,7 @@ static void snd_usb_audio_disconnect(str
- }
- usb_chip[chip->index] = NULL;
- up(®ister_mutex);
-- snd_card_free_in_thread(card);
-+ snd_card_free(card);
- } else {
- up(®ister_mutex);
- }
-diff --git a/sound/usb/usx2y/usbusx2y.c b/sound/usb/usx2y/usbusx2y.c
---- a/sound/usb/usx2y/usbusx2y.c
-+++ b/sound/usb/usx2y/usbusx2y.c
-@@ -1,6 +1,11 @@
- /*
- * usbusy2y.c - ALSA USB US-428 Driver
- *
-+2005-04-14 Karsten Wiese
-+ Version 0.8.7.2:
-+ Call snd_card_free() instead of snd_card_free_in_thread() to prevent
oops with dead keyboard symptom.
-+ Tested ok with kernel 2.6.12-rc2.
-+
- 2004-12-14 Karsten Wiese
- Version 0.8.7.1:
- snd_pcm_open for rawusb pcm-devices now returns -EBUSY if called
without rawusb's hwdep device being open.
-@@ -143,7 +148,7 @@
-
-
- MODULE_AUTHOR("Karsten Wiese <annabellesgarden@xxxxxxxx>");
--MODULE_DESCRIPTION("TASCAM "NAME_ALLCAPS" Version 0.8.7.1");
-+MODULE_DESCRIPTION("TASCAM "NAME_ALLCAPS" Version 0.8.7.2");
- MODULE_LICENSE("GPL");
- MODULE_SUPPORTED_DEVICE("{{TASCAM(0x1604),
"NAME_ALLCAPS"(0x8001)(0x8005)(0x8007) }}");
-
-@@ -430,8 +435,6 @@ static void usX2Y_usb_disconnect(struct
- if (ptr) {
- usX2Ydev_t* usX2Y = usX2Y((snd_card_t*)ptr);
- struct list_head* p;
-- if (usX2Y->chip_status == USX2Y_STAT_CHIP_HUP) // on 2.6.1
kernel snd_usbmidi_disconnect()
-- return; // calls us
back. better leave :-) .
- usX2Y->chip.shutdown = 1;
- usX2Y->chip_status = USX2Y_STAT_CHIP_HUP;
- usX2Y_unlinkSeq(&usX2Y->AS04);
-@@ -443,7 +446,7 @@ static void usX2Y_usb_disconnect(struct
- }
- if (usX2Y->us428ctls_sharedmem)
- wake_up(&usX2Y->us428ctls_wait_queue_head);
-- snd_card_free_in_thread((snd_card_t*)ptr);
-+ snd_card_free((snd_card_t*)ptr);
- }
- }
-
diff -r d75a502b45eb -r 43e28a2f6037 patches/linux-2.6.11/net-csum.patch
--- a/patches/linux-2.6.11/net-csum.patch Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,22 +0,0 @@
-diff -ur linux-2.6.11/net/ipv4/netfilter/ip_conntrack_proto_tcp.c
linux-2.6.11-csum/net/ipv4/netfilter/ip_conntrack_proto_tcp.c
---- linux-2.6.11/net/ipv4/netfilter/ip_conntrack_proto_tcp.c 2005-05-27
11:47:48 +01:00
-+++ linux-2.6.11-csum/net/ipv4/netfilter/ip_conntrack_proto_tcp.c
2005-05-27 11:48:07 +01:00
-@@ -803,6 +803,7 @@
- */
- /* FIXME: Source route IP option packets --RR */
- if (hooknum == NF_IP_PRE_ROUTING
-+ && skb->ip_summed != CHECKSUM_UNNECESSARY
- && csum_tcpudp_magic(iph->saddr, iph->daddr, tcplen, IPPROTO_TCP,
- skb->ip_summed == CHECKSUM_HW ? skb->csum
- : skb_checksum(skb, iph->ihl*4, tcplen, 0))) {
-diff -ur linux-2.6.11/net/ipv4/netfilter/ip_conntrack_proto_udp.c
linux-2.6.11-csum/net/ipv4/netfilter/ip_conntrack_proto_udp.c
---- linux-2.6.11/net/ipv4/netfilter/ip_conntrack_proto_udp.c 2005-05-27
11:47:48 +01:00
-+++ linux-2.6.11-csum/net/ipv4/netfilter/ip_conntrack_proto_udp.c
2005-05-27 11:48:07 +01:00
-@@ -120,6 +120,7 @@
- * and moreover root might send raw packets.
- * FIXME: Source route IP option packets --RR */
- if (hooknum == NF_IP_PRE_ROUTING
-+ && skb->ip_summed != CHECKSUM_UNNECESSARY
- && csum_tcpudp_magic(iph->saddr, iph->daddr, udplen, IPPROTO_UDP,
- skb->ip_summed == CHECKSUM_HW ? skb->csum
- : skb_checksum(skb, iph->ihl*4, udplen, 0))) {
diff -r d75a502b45eb -r 43e28a2f6037 patches/linux-2.6.11/rcu-nohz.patch
--- a/patches/linux-2.6.11/rcu-nohz.patch Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,16 +0,0 @@
-diff -ur linux-2.6.11/kernel/rcupdate.c linux-2.6.11-rcu/kernel/rcupdate.c
---- linux-2.6.11/kernel/rcupdate.c 2005-05-30 10:51:41 +01:00
-+++ linux-2.6.11-rcu/kernel/rcupdate.c 2005-05-30 10:53:53 +01:00
-@@ -202,8 +202,11 @@
- */
- static void cpu_quiet(int cpu, struct rcu_ctrlblk *rcp, struct rcu_state *rsp)
- {
-+ cpumask_t mask;
-+
- cpu_clear(cpu, rsp->cpumask);
-- if (cpus_empty(rsp->cpumask)) {
-+ cpus_andnot(mask, rsp->cpumask, nohz_cpu_mask);
-+ if (cpus_empty(mask)) {
- /* batch completed ! */
- rcp->completed = rcp->cur;
- rcu_start_batch(rcp, rsp, 0);
diff -r d75a502b45eb -r 43e28a2f6037 patches/linux-2.6.11/udp-frag.patch
--- a/patches/linux-2.6.11/udp-frag.patch Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,55 +0,0 @@
-diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
---- a/net/ipv4/udp.c
-+++ b/net/ipv4/udp.c
-@@ -738,7 +738,7 @@ int udp_ioctl(struct sock *sk, int cmd,
- unsigned long amount;
-
- amount = 0;
-- spin_lock_irq(&sk->sk_receive_queue.lock);
-+ spin_lock_bh(&sk->sk_receive_queue.lock);
- skb = skb_peek(&sk->sk_receive_queue);
- if (skb != NULL) {
- /*
-@@ -748,7 +748,7 @@ int udp_ioctl(struct sock *sk, int cmd,
- */
- amount = skb->len - sizeof(struct udphdr);
- }
-- spin_unlock_irq(&sk->sk_receive_queue.lock);
-+ spin_unlock_bh(&sk->sk_receive_queue.lock);
- return put_user(amount, (int __user *)arg);
- }
-
-@@ -848,12 +848,12 @@ csum_copy_err:
- /* Clear queue. */
- if (flags&MSG_PEEK) {
- int clear = 0;
-- spin_lock_irq(&sk->sk_receive_queue.lock);
-+ spin_lock_bh(&sk->sk_receive_queue.lock);
- if (skb == skb_peek(&sk->sk_receive_queue)) {
- __skb_unlink(skb, &sk->sk_receive_queue);
- clear = 1;
- }
-- spin_unlock_irq(&sk->sk_receive_queue.lock);
-+ spin_unlock_bh(&sk->sk_receive_queue.lock);
- if (clear)
- kfree_skb(skb);
- }
-@@ -1334,7 +1334,7 @@ unsigned int udp_poll(struct file *file,
- struct sk_buff_head *rcvq = &sk->sk_receive_queue;
- struct sk_buff *skb;
-
-- spin_lock_irq(&rcvq->lock);
-+ spin_lock_bh(&rcvq->lock);
- while ((skb = skb_peek(rcvq)) != NULL) {
- if (udp_checksum_complete(skb)) {
- UDP_INC_STATS_BH(UDP_MIB_INERRORS);
-@@ -1345,7 +1345,7 @@ unsigned int udp_poll(struct file *file,
- break;
- }
- }
-- spin_unlock_irq(&rcvq->lock);
-+ spin_unlock_bh(&rcvq->lock);
-
- /* nothing to see, move along */
- if (skb == NULL)
-
diff -r d75a502b45eb -r 43e28a2f6037 patches/linux-2.6.11/x86_64-linux.patch
--- a/patches/linux-2.6.11/x86_64-linux.patch Fri Jul 15 19:57:12 2005
+++ /dev/null Sat Jul 16 14:02:54 2005
@@ -1,68 +0,0 @@
-diff -urN linux-2.6.10-orig/include/asm-x86_64/hw_irq.h
linux-2.6.10/include/asm-x86_64/hw_irq.h
---- linux-2.6.10-orig/include/asm-x86_64/hw_irq.h 2005-01-06
00:34:38.000000000 -0500
-+++ linux-2.6.10/include/asm-x86_64/hw_irq.h 2005-02-25 17:45:37.181518088
-0500
-@@ -48,6 +48,7 @@
- *
- * Vectors 0xf0-0xf9 are free (reserved for future Linux use).
- */
-+#ifndef CONFIG_XEN
- #define SPURIOUS_APIC_VECTOR 0xff
- #define ERROR_APIC_VECTOR 0xfe
- #define INVALIDATE_TLB_VECTOR 0xfd
-@@ -57,7 +58,7 @@
- #define KDB_VECTOR 0xf9
-
- #define THERMAL_APIC_VECTOR 0xf0
--
-+#endif
-
- /*
- * Local APIC timer IRQ vector is on a different priority level,
-diff -urN linux-2.6.10-orig/include/asm-x86_64/irq.h
linux-2.6.10/include/asm-x86_64/irq.h
---- linux-2.6.10-orig/include/asm-x86_64/irq.h 2005-01-06 00:34:38.000000000
-0500
-+++ linux-2.6.10/include/asm-x86_64/irq.h 2005-02-25 17:45:37.181518088
-0500
-@@ -10,6 +10,9 @@
- * <tomsoft@xxxxxxxxxxxxxxxxxxxxxxxxx>
- */
-
-+#ifdef CONFIG_XEN
-+#include "irq_vectors.h"
-+#endif
- #define TIMER_IRQ 0
-
- /*
-@@ -22,6 +25,7 @@
- * the usable vector space is 0x20-0xff (224 vectors)
- */
-
-+#ifndef CONFIG_XEN
- /*
- * The maximum number of vectors supported by x86_64 processors
- * is limited to 256. For processors other than x86_64, NR_VECTORS
-@@ -38,6 +42,7 @@
- #define NR_IRQS 224
- #define NR_IRQ_VECTORS 1024
- #endif
-+#endif
-
- static __inline__ int irq_canonicalize(int irq)
- {
-diff -urN linux-2.6.10-orig/include/asm-x86_64/posix_types.h
linux-2.6.10/include/asm-x86_64/posix_types.h
---- linux-2.6.10-orig/include/asm-x86_64/posix_types.h 2004-10-18
17:55:29.000000000 -0400
-+++ linux-2.6.10/include/asm-x86_64/posix_types.h 2005-02-25
17:45:37.183517784 -0500
-@@ -6,7 +6,7 @@
- * be a little careful about namespace pollution etc. Also, we cannot
- * assume GCC is being used.
- */
--
-+#ifndef __ASSEMBLY__
- typedef unsigned long __kernel_ino_t;
- typedef unsigned int __kernel_mode_t;
- typedef unsigned long __kernel_nlink_t;
-@@ -115,5 +115,5 @@
- }
-
- #endif /* defined(__KERNEL__) */
--
-+#endif
- #endif
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