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xen-devel
Re: [Xen-devel] Re: [xen-unstable test] 8803: regressions - FAIL
On Thu, 2011-09-01 at 17:23 +0100, Ian Jackson wrote:
> ~xen.org writes ("[xen-unstable test] 8803: regressions - FAIL"):
> > flight 8803 xen-unstable real [real]
> > http://www.chiark.greenend.org.uk/~xensrcts/logs/8803/
> > build-i386 4 xen-build fail REGR. vs. 8769
>
> gcc -O1 -fno-omit-frame-pointer -m32 -march=i686 -g -fno-strict-aliasing
> -std=gnu99 -Wall -Wstrict-prototypes -Wno-unused-value -Wdeclaration-after-
> statement -fno-builtin -fno-common -Wredundant-decls -iwithprefix include
> -Werror -Wno-pointer-arith -pipe -I/home/osstest/build.8803.build-i386/xe
> n-unstable/xen/include
> -I/home/osstest/build.8803.build-i386/xen-unstable/xen/include/asm-x86/mach-generic
> -I/home/osstest/build.8803.build-i386/xe
> n-unstable/xen/include/asm-x86/mach-default -msoft-float -fno-stack-protector
> -fno-exceptions -Wnested-externs -fno-optimize-sibling-calls -nostdinc
> -g -D__XEN__ -DVERBOSE -fno-omit-frame-pointer -DCONFIG_FRAME_POINTER -MMD
> -MF .domain_page.o.d -c domain_page.c -o domain_page.o
> domain_page.c: In function 'map_domain_page_global':
> domain_page.c:211: error: negative width in bit-field '<anonymous>'
Which is:
/* At least half the ioremap space should be available to us. */
BUILD_BUG_ON(IOREMAP_VIRT_START + (IOREMAP_MBYTES << 19) >= FIXADDR_START);
Looking at 8769 vs this revision my bet is:
changeset: 23802:bb9b81008733
user: Laszlo Ersek <lersek@xxxxxxxxxx>
date: Wed Aug 31 15:16:14 2011 +0100
files: xen/include/asm-x86/config.h
description:
x86: Increase the default NR_CPUS to 256
Changeset 21012:ef845a385014 bumped the default to 128 about one and a
half years ago. Increase it now to 256, as systems with eg. 160
logical CPUs are becoming (have become) common.
Signed-off-by: Laszlo Ersek <lersek@xxxxxxxxxx>
diff -r d54cfae72cd1 -r bb9b81008733 xen/include/asm-x86/config.h
--- a/xen/include/asm-x86/config.h Wed Aug 31 15:15:41 2011 +0100
+++ b/xen/include/asm-x86/config.h Wed Aug 31 15:16:14 2011 +0100
@@ -50,7 +50,7 @@
#ifdef MAX_PHYS_CPUS
#define NR_CPUS MAX_PHYS_CPUS
#else
-#define NR_CPUS 128
+#define NR_CPUS 256
#endif
#ifdef __i386__
I think we need (untested):
# HG changeset patch
# User Ian Campbell <ian.campbell@xxxxxxxxxx>
# Date 1314894881 -3600
# Node ID 4309ff9535001bdca8db93a439edd86bb4c447cd
# Parent bb97bd46df6c6d8562759a964ebf6c31b6361a7a
xen/x86: only support >128 CPUs on x86_64
32 bit cannot cope with 256 cpus and hits:
/* At least half the ioremap space should be available to us. */
BUILD_BUG_ON(IOREMAP_VIRT_START + (IOREMAP_MBYTES << 19) >= FIXADDR_START);
Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
diff -r bb97bd46df6c -r 4309ff953500 xen/include/asm-x86/config.h
--- a/xen/include/asm-x86/config.h Thu Sep 01 16:03:21 2011 +0100
+++ b/xen/include/asm-x86/config.h Thu Sep 01 17:34:41 2011 +0100
@@ -49,6 +49,8 @@
#ifdef MAX_PHYS_CPUS
#define NR_CPUS MAX_PHYS_CPUS
+#elif defined __i386__
+#define NR_CPUS 128
#else
#define NR_CPUS 256
#endif
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