# HG changeset patch
# User yamahata@xxxxxxxxxxxxx
# Date 1188281121 -32400
# Node ID 81be02b7e4cc2c0239e050b6f2dcd0ef69ffdcf9
# Parent ec6538af0ce5c0cee25d7a063c1d33df0f80a8d9
allow xc_core arch code top optimization. And some code clean up.
Currently xc core code tries to map page in order to deterine a given gmfn
page is allocated or not when auto transated mode. It takes long time.
Introduce xc_core_arch_gpfn_present() arch hook to allow arch code
arch optimized way. and implement default function which tries to
map a page as before.
PATCHNAME: allow_xc_core_arch_optimization
Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
diff -r ec6538af0ce5 -r 81be02b7e4cc tools/libxc/xc_core.c
--- a/tools/libxc/xc_core.c Tue Aug 28 14:53:42 2007 +0900
+++ b/tools/libxc/xc_core.c Tue Aug 28 15:05:21 2007 +0900
@@ -231,6 +231,35 @@ xc_core_shdr_set(Elf64_Shdr *shdr,
return 0;
}
+static void
+xc_core_ehdr_init(Elf64_Ehdr *ehdr)
+{
+ memset(ehdr, 0, sizeof(*ehdr));
+ ehdr->e_ident[EI_MAG0] = ELFMAG0;
+ ehdr->e_ident[EI_MAG1] = ELFMAG1;
+ ehdr->e_ident[EI_MAG2] = ELFMAG2;
+ ehdr->e_ident[EI_MAG3] = ELFMAG3;
+ ehdr->e_ident[EI_CLASS] = ELFCLASS64;
+ ehdr->e_ident[EI_DATA] = ELF_ARCH_DATA;
+ ehdr->e_ident[EI_VERSION] = EV_CURRENT;
+ ehdr->e_ident[EI_OSABI] = ELFOSABI_SYSV;
+ ehdr->e_ident[EI_ABIVERSION] = EV_CURRENT;
+
+ ehdr->e_type = ET_CORE;
+ ehdr->e_machine = ELF_ARCH_MACHINE;
+ ehdr->e_version = EV_CURRENT;
+ ehdr->e_entry = 0;
+ ehdr->e_phoff = 0;
+ ehdr->e_shoff = sizeof(*ehdr);
+ ehdr->e_flags = ELF_CORE_EFLAGS;
+ ehdr->e_ehsize = sizeof(*ehdr);
+ ehdr->e_phentsize = sizeof(Elf64_Phdr);
+ ehdr->e_phnum = 0;
+ ehdr->e_shentsize = sizeof(Elf64_Shdr);
+ /* ehdr->e_shnum and ehdr->e_shstrndx aren't known here yet.
+ * fill it later */
+}
+
static int
elfnote_fill_xen_version(int xc_handle,
struct xen_dumpcore_elfnote_xen_version_desc
@@ -277,13 +306,116 @@ elfnote_fill_xen_version(int xc_handle,
return 0;
}
-static int
+static void
elfnote_fill_format_version(struct xen_dumpcore_elfnote_format_version_desc
*format_version)
{
format_version->version = XEN_DUMPCORE_FORMAT_VERSION_CURRENT;
- return 0;
-}
+}
+
+static void
+elfnote_init(struct elfnote *elfnote)
+{
+ /* elf note section */
+ memset(elfnote, 0, sizeof(*elfnote));
+ elfnote->namesz = strlen(XEN_DUMPCORE_ELFNOTE_NAME) + 1;
+ strncpy(elfnote->name, XEN_DUMPCORE_ELFNOTE_NAME, sizeof(elfnote->name));
+}
+
+static int
+elfnote_dump_none(void *args, dumpcore_rtn_t dump_rtn)
+{
+ int sts;
+ struct elfnote elfnote;
+ struct xen_dumpcore_elfnote_none_desc none;
+
+ elfnote_init(&elfnote);
+ memset(&none, 0, sizeof(none));
+
+ elfnote.descsz = sizeof(none);
+ elfnote.type = XEN_ELFNOTE_DUMPCORE_NONE;
+ sts = dump_rtn(args, (char*)&elfnote, sizeof(elfnote));
+ if ( sts != 0 )
+ return sts;
+ return dump_rtn(args, (char*)&none, sizeof(none));
+}
+
+static int
+elfnote_dump_core_header(
+ void *args, dumpcore_rtn_t dump_rtn, const xc_dominfo_t *info,
+ int nr_vcpus, unsigned long nr_pages)
+{
+ int sts;
+ struct elfnote elfnote;
+ struct xen_dumpcore_elfnote_header_desc header;
+
+ elfnote_init(&elfnote);
+ memset(&header, 0, sizeof(header));
+
+ elfnote.descsz = sizeof(header);
+ elfnote.type = XEN_ELFNOTE_DUMPCORE_HEADER;
+ header.xch_magic = info->hvm ? XC_CORE_MAGIC_HVM : XC_CORE_MAGIC;
+ header.xch_nr_vcpus = nr_vcpus;
+ header.xch_nr_pages = nr_pages;
+ header.xch_page_size = PAGE_SIZE;
+ sts = dump_rtn(args, (char*)&elfnote, sizeof(elfnote));
+ if ( sts != 0 )
+ return sts;
+ return dump_rtn(args, (char*)&header, sizeof(header));
+}
+
+static int
+elfnote_dump_xen_version(void *args, dumpcore_rtn_t dump_rtn, int xc_handle)
+{
+ int sts;
+ struct elfnote elfnote;
+ struct xen_dumpcore_elfnote_xen_version_desc xen_version;
+
+ elfnote_init(&elfnote);
+ memset(&xen_version, 0, sizeof(xen_version));
+
+ elfnote.descsz = sizeof(xen_version);
+ elfnote.type = XEN_ELFNOTE_DUMPCORE_XEN_VERSION;
+ elfnote_fill_xen_version(xc_handle, &xen_version);
+ sts = dump_rtn(args, (char*)&elfnote, sizeof(elfnote));
+ if ( sts != 0 )
+ return sts;
+ return dump_rtn(args, (char*)&xen_version, sizeof(xen_version));
+}
+
+static int
+elfnote_dump_format_version(void *args, dumpcore_rtn_t dump_rtn)
+{
+ int sts;
+ struct elfnote elfnote;
+ struct xen_dumpcore_elfnote_format_version_desc format_version;
+
+ elfnote_init(&elfnote);
+ memset(&format_version, 0, sizeof(format_version));
+
+ elfnote.descsz = sizeof(format_version);
+ elfnote.type = XEN_ELFNOTE_DUMPCORE_FORMAT_VERSION;
+ elfnote_fill_format_version(&format_version);
+ sts = dump_rtn(args, (char*)&elfnote, sizeof(elfnote));
+ if ( sts != 0 )
+ return sts;
+ return dump_rtn(args, (char*)&format_version, sizeof(format_version));
+}
+
+int
+xc_core_arch_gpfn_present_default(int xc_handle,
+ struct xc_core_arch_context *unused,
+ uint32_t domid, unsigned long pfn)
+{
+ /* try to map page to determin wheter it has underlying page */
+ void *vaddr = xc_map_foreign_range(xc_handle, domid,
+ PAGE_SIZE, PROT_READ, pfn);
+ munmap(vaddr, PAGE_SIZE);
+ return vaddr != NULL;
+}
+#ifndef xc_core_arch_gpfn_present
+# define xc_core_arch_gpfn_present xc_core_arch_gpfn_present_default
+#endif
int
xc_domain_dumpcore_via_callback(int xc_handle,
@@ -327,13 +459,6 @@ xc_domain_dumpcore_via_callback(int xc_h
struct xc_core_section_headers *sheaders = NULL;
Elf64_Shdr *shdr;
- /* elf notes */
- struct elfnote elfnote;
- struct xen_dumpcore_elfnote_none_desc none;
- struct xen_dumpcore_elfnote_header_desc header;
- struct xen_dumpcore_elfnote_xen_version_desc xen_version;
- struct xen_dumpcore_elfnote_format_version_desc format_version;
-
xc_core_arch_context_init(&arch_ctxt);
if ( (dump_mem_start = malloc(DUMP_INCREMENT*PAGE_SIZE)) == NULL )
{
@@ -379,8 +504,9 @@ xc_domain_dumpcore_via_callback(int xc_h
}
/* obtain memory map */
- sts = xc_core_arch_memory_map_get(xc_handle, &info, live_shinfo,
- &memory_map, &nr_memory_map);
+ sts = xc_core_arch_memory_map_get(xc_handle, &arch_ctxt, &info,
+ live_shinfo, &memory_map,
+ &nr_memory_map);
if ( sts != 0 )
goto out;
@@ -430,12 +556,9 @@ xc_domain_dumpcore_via_callback(int xc_h
}
else
{
- /* try to map page to determin wheter it has underlying page */
- void *vaddr = xc_map_foreign_range(xc_handle, domid,
- PAGE_SIZE, PROT_READ, i);
- if ( vaddr == NULL )
+ if (!xc_core_arch_gpfn_present(xc_handle, &arch_ctxt,
+ domid, i))
continue;
- munmap(vaddr, PAGE_SIZE);
pfn_array[j] = i;
}
@@ -451,29 +574,8 @@ xc_domain_dumpcore_via_callback(int xc_h
nr_pages = j;
}
- memset(&ehdr, 0, sizeof(ehdr));
- ehdr.e_ident[EI_MAG0] = ELFMAG0;
- ehdr.e_ident[EI_MAG1] = ELFMAG1;
- ehdr.e_ident[EI_MAG2] = ELFMAG2;
- ehdr.e_ident[EI_MAG3] = ELFMAG3;
- ehdr.e_ident[EI_CLASS] = ELFCLASS64;
- ehdr.e_ident[EI_DATA] = ELF_ARCH_DATA;
- ehdr.e_ident[EI_VERSION] = EV_CURRENT;
- ehdr.e_ident[EI_OSABI] = ELFOSABI_SYSV;
- ehdr.e_ident[EI_ABIVERSION] = EV_CURRENT;
-
- ehdr.e_type = ET_CORE;
- ehdr.e_machine = ELF_ARCH_MACHINE;
- ehdr.e_version = EV_CURRENT;
- ehdr.e_entry = 0;
- ehdr.e_phoff = 0;
- ehdr.e_shoff = sizeof(ehdr);
- ehdr.e_flags = ELF_CORE_EFLAGS;
- ehdr.e_ehsize = sizeof(ehdr);
- ehdr.e_phentsize = sizeof(Elf64_Phdr);
- ehdr.e_phnum = 0;
- ehdr.e_shentsize = sizeof(Elf64_Shdr);
/* ehdr.e_shnum and ehdr.e_shstrndx aren't known here yet. fill it later*/
+ xc_core_ehdr_init(&ehdr);
/* create section header */
strtab = xc_core_strtab_init();
@@ -549,7 +651,7 @@ xc_domain_dumpcore_via_callback(int xc_h
/* arch context */
sts = xc_core_arch_context_get_shdr(&arch_ctxt, sheaders, strtab,
&filesz, offset);
- if ( sts != 0)
+ if ( sts != 0 )
goto out;
offset += filesz;
@@ -645,54 +747,23 @@ xc_domain_dumpcore_via_callback(int xc_h
if ( sts != 0 )
goto out;
- /* elf note section */
- memset(&elfnote, 0, sizeof(elfnote));
- elfnote.namesz = strlen(XEN_DUMPCORE_ELFNOTE_NAME) + 1;
- strncpy(elfnote.name, XEN_DUMPCORE_ELFNOTE_NAME, sizeof(elfnote.name));
-
- /* elf note section:xen core header */
- elfnote.descsz = sizeof(none);
- elfnote.type = XEN_ELFNOTE_DUMPCORE_NONE;
- sts = dump_rtn(args, (char*)&elfnote, sizeof(elfnote));
- if ( sts != 0 )
- goto out;
- sts = dump_rtn(args, (char*)&none, sizeof(none));
- if ( sts != 0 )
- goto out;
-
- /* elf note section:xen core header */
- elfnote.descsz = sizeof(header);
- elfnote.type = XEN_ELFNOTE_DUMPCORE_HEADER;
- header.xch_magic = info.hvm ? XC_CORE_MAGIC_HVM : XC_CORE_MAGIC;
- header.xch_nr_vcpus = nr_vcpus;
- header.xch_nr_pages = nr_pages;
- header.xch_page_size = PAGE_SIZE;
- sts = dump_rtn(args, (char*)&elfnote, sizeof(elfnote));
- if ( sts != 0 )
- goto out;
- sts = dump_rtn(args, (char*)&header, sizeof(header));
+ /* elf note section: xen core header */
+ sts = elfnote_dump_none(args, dump_rtn);
+ if ( sts != 0)
+ goto out;
+
+ /* elf note section: xen core header */
+ sts = elfnote_dump_core_header(args, dump_rtn, &info, nr_vcpus, nr_pages);
if ( sts != 0 )
goto out;
/* elf note section: xen version */
- elfnote.descsz = sizeof(xen_version);
- elfnote.type = XEN_ELFNOTE_DUMPCORE_XEN_VERSION;
- elfnote_fill_xen_version(xc_handle, &xen_version);
- sts = dump_rtn(args, (char*)&elfnote, sizeof(elfnote));
- if ( sts != 0 )
- goto out;
- sts = dump_rtn(args, (char*)&xen_version, sizeof(xen_version));
+ sts = elfnote_dump_xen_version(args, dump_rtn, xc_handle);
if ( sts != 0 )
goto out;
/* elf note section: format version */
- elfnote.descsz = sizeof(format_version);
- elfnote.type = XEN_ELFNOTE_DUMPCORE_FORMAT_VERSION;
- elfnote_fill_format_version(&format_version);
- sts = dump_rtn(args, (char*)&elfnote, sizeof(elfnote));
- if ( sts != 0 )
- goto out;
- sts = dump_rtn(args, (char*)&format_version, sizeof(format_version));
+ sts = elfnote_dump_format_version(args, dump_rtn);
if ( sts != 0 )
goto out;
diff -r ec6538af0ce5 -r 81be02b7e4cc tools/libxc/xc_core.h
--- a/tools/libxc/xc_core.h Tue Aug 28 14:53:42 2007 +0900
+++ b/tools/libxc/xc_core.h Tue Aug 28 15:05:21 2007 +0900
@@ -131,14 +131,18 @@ struct xc_core_memory_map {
};
typedef struct xc_core_memory_map xc_core_memory_map_t;
int xc_core_arch_auto_translated_physmap(const xc_dominfo_t *info);
-int xc_core_arch_memory_map_get(int xc_handle, xc_dominfo_t *info,
- shared_info_t *live_shinfo,
+struct xc_core_arch_context;
+int xc_core_arch_memory_map_get(int xc_handle,
+ struct xc_core_arch_context *arch_ctxt,
+ xc_dominfo_t *info, shared_info_t *live_shinfo,
xc_core_memory_map_t **mapp,
unsigned int *nr_entries);
int xc_core_arch_map_p2m(int xc_handle, xc_dominfo_t *info,
shared_info_t *live_shinfo, xen_pfn_t **live_p2m,
unsigned long *pfnp);
-
+int xc_core_arch_gpfn_present_default(int xc_handle,
+ struct xc_core_arch_context *unused,
+ uint32_t domid, unsigned long pfn);
#if defined (__i386__) || defined (__x86_64__)
# include "xc_core_x86.h"
diff -r ec6538af0ce5 -r 81be02b7e4cc tools/libxc/xc_core_powerpc.c
--- a/tools/libxc/xc_core_powerpc.c Tue Aug 28 14:53:42 2007 +0900
+++ b/tools/libxc/xc_core_powerpc.c Tue Aug 28 15:05:21 2007 +0900
@@ -43,8 +43,8 @@ xc_core_arch_map_p2m(int xc_handle, xc_d
}
int
-xc_core_arch_memory_map_get(int xc_handle, xc_dominfo_t *info,
- shared_info_t *live_shinfo,
+xc_core_arch_memory_map_get(int xc_handle, struct xc_core_arch_context *unused,
+ xc_dominfo_t *info, shared_info_t *live_shinfo,
xc_core_memory_map_t **mapp,
unsigned int *nr_entries)
{
diff -r ec6538af0ce5 -r 81be02b7e4cc tools/libxc/xc_core_x86.c
--- a/tools/libxc/xc_core_x86.c Tue Aug 28 14:53:42 2007 +0900
+++ b/tools/libxc/xc_core_x86.c Tue Aug 28 15:05:21 2007 +0900
@@ -33,8 +33,8 @@ xc_core_arch_auto_translated_physmap(con
}
int
-xc_core_arch_memory_map_get(int xc_handle, xc_dominfo_t *info,
- shared_info_t *live_shinfo,
+xc_core_arch_memory_map_get(int xc_handle, struct xc_core_arch_context *unused,
+ xc_dominfo_t *info, shared_info_t *live_shinfo,
xc_core_memory_map_t **mapp,
unsigned int *nr_entries)
{
--
yamahata
15779_81be02b7e4cc_allow_xc_core_arch_optimization.patch
Description: Text Data
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