|
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 3/3] dump-core take4: elf formatify and added PFN-GMFN table
# HG changeset patch
# User yamahata@xxxxxxxxxxxxx
# Date 1170124592 -32400
# Node ID 97f27d9d002e39a3911519d1dfd1ac3c009886b3
# Parent 659afa1ed4fb23961f93ca32c2e476b2f0616761
Use the guest's own p2m table instead of xc_get_pfn_list(), which cannot handle
PFNs with no MFN.
Dump a zeroed page for PFNs with no MFN.
Clearly deprecate xc_get_pfn_list().
Do not include a P2M table with HVM domains.
Refuse to dump HVM until we can map its pages with PFNs.
Signed-off-by: John Levon <john.levon@xxxxxxx>
ELF formatified with note section.
added PFN-GMFN table for non-auto translated physmap
added PFN table for auto translated physmap.
HVM domain support.
IA64 support preliminary.
NOTE: IA64 support is for only place holder. It doesn't work.
[TODO] Xen/IA64 support
PATCHNAME: xm_dump_core_elf
Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
diff -r 659afa1ed4fb -r 97f27d9d002e tools/libxc/xc_core.c
--- a/tools/libxc/xc_core.c Mon Jan 29 14:07:26 2007 +0900
+++ b/tools/libxc/xc_core.c Tue Jan 30 11:36:32 2007 +0900
@@ -1,10 +1,54 @@
+/*
+ * Elf format, (pfn, gmfn) table, IA64 support.
+ * Copyright (c) 2007 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ *
+ * xen dump-core file format follows ELF format specification.
+ * Analisys tools shouldn't depends on the order of sections.
+ * They should follow elf header and check section names.
+ *
+ * +--------------------------------------------------------+
+ * |ELF header |
+ * +--------------------------------------------------------+
+ * |section headers |
+ * | null section header |
+ * | .shstrtab |
+ * | .note.Xen |
+ * | .Xen.p2m or .Xen.pfn |
+ * | .Xen.pages |
+ * +--------------------------------------------------------+
+ * |.note.Xen:note section |
+ * | "Xen" is used as note name, |
+ * | types are defined in xen/include/public/elfnote.h |
+ * | and descriptors are defined in xc_core.h. |
+ * | dumpcore none |
+ * | dumpcore header |
+ * | dumpcore xen version |
+ * | dumpcore format version |
+ * | dumpcore prstatus |
+ * | vcpu_guest_context_t[nr_vcpus] |
+ * +--------------------------------------------------------+
+ * |.Xen.p2m or .Xen.pfn |
+ * | .Xen.p2m: struct p2m[nr_pages] |
+ * | .Xen.pfn: uint64_t[nr_pages] |
+ * +--------------------------------------------------------+
+ * |.Xen.pages |
+ * | page * nr_pages |
+ * +--------------------------------------------------------+
+ * |.shstrtab: section header string table |
+ * +--------------------------------------------------------+
+ *
+ */
+
#include "xg_private.h"
+#include "xc_elf.h"
+#include "xc_dom.h"
+#include "xc_core.h"
#include <stdlib.h>
#include <unistd.h>
/* number of pages to write at a time */
#define DUMP_INCREMENT (4 * 1024)
-#define round_pgup(_p) (((_p)+(PAGE_SIZE-1))&PAGE_MASK)
static int
copy_from_domain_page(int xc_handle,
@@ -21,107 +65,823 @@ copy_from_domain_page(int xc_handle,
return 0;
}
+struct memory_map_entry {
+ uint64_t addr;
+ uint64_t size;
+};
+typedef struct memory_map_entry memory_map_entry_t;
+
+#if defined(__i386__) || defined(__x86_64__)
+#define ELF_ARCH_DATA ELFDATA2LSB
+#if defined (__i386__)
+# define ELF_ARCH_MACHINE EM_386
+#else
+# define ELF_ARCH_MACHINE EM_X86_64
+#endif
+
+static int
+is_auto_translated_physmap(const xc_dominfo_t *info)
+{
+ if ( info->hvm )
+ return 1;
+ return 0;
+}
+
+static int
+memory_map_get(int xc_handle, xc_dominfo_t *info,
+ memory_map_entry_t **mapp, unsigned int *nr_entries)
+{
+ shared_info_t *live_shinfo = NULL;
+ uint32_t dom = info->domid;
+ unsigned long max_pfn = 0;
+ memory_map_entry_t *map = NULL;
+
+ map = malloc(sizeof(*map));
+ if ( !map )
+ {
+ PERROR("Could not allocate memory");
+ goto out;
+ }
+
+ /* Map the shared info frame */
+ live_shinfo = xc_map_foreign_range(xc_handle, dom, PAGE_SIZE,
+ PROT_READ, info->shared_info_frame);
+ if ( !live_shinfo )
+ {
+ PERROR("Couldn't map live_shinfo");
+ goto out;
+ }
+ max_pfn = live_shinfo->arch.max_pfn;
+ munmap(live_shinfo, PAGE_SIZE);
+
+ map->addr = 0;
+ map->size = max_pfn << PAGE_SHIFT;
+
+ *mapp = map;
+ *nr_entries = 1;
+ return 0;
+
+out:
+ if ( map )
+ free(map);
+ return -1;
+}
+
+static int
+map_p2m(int xc_handle, xc_dominfo_t *info, xen_pfn_t **live_p2m,
+ unsigned long *pfnp)
+{
+ /* Double and single indirect references to the live P2M table */
+ xen_pfn_t *live_p2m_frame_list_list = NULL;
+ xen_pfn_t *live_p2m_frame_list = NULL;
+ shared_info_t *live_shinfo = NULL;
+ uint32_t dom = info->domid;
+ unsigned long max_pfn = 0;
+ int ret = -1;
+ int err;
+
+ /* Map the shared info frame */
+ live_shinfo = xc_map_foreign_range(xc_handle, dom, PAGE_SIZE,
+ PROT_READ, info->shared_info_frame);
+
+ if ( !live_shinfo )
+ {
+ PERROR("Couldn't map live_shinfo");
+ goto out;
+ }
+
+ max_pfn = live_shinfo->arch.max_pfn;
+
+ if ( max_pfn < info->nr_pages )
+ {
+ ERROR("max_pfn < nr_pages -1 (%lx < %lx", max_pfn, info->nr_pages - 1);
+ goto out;
+ }
+
+ live_p2m_frame_list_list =
+ xc_map_foreign_range(xc_handle, dom, PAGE_SIZE, PROT_READ,
+ live_shinfo->arch.pfn_to_mfn_frame_list_list);
+
+ if ( !live_p2m_frame_list_list )
+ {
+ PERROR("Couldn't map p2m_frame_list_list (errno %d)", errno);
+ goto out;
+ }
+
+ live_p2m_frame_list =
+ xc_map_foreign_batch(xc_handle, dom, PROT_READ,
+ live_p2m_frame_list_list,
+ P2M_FLL_ENTRIES);
+
+ if ( !live_p2m_frame_list )
+ {
+ PERROR("Couldn't map p2m_frame_list");
+ goto out;
+ }
+
+ *live_p2m = xc_map_foreign_batch(xc_handle, dom, PROT_READ,
+ live_p2m_frame_list,
+ P2M_FL_ENTRIES);
+
+ if ( !live_p2m )
+ {
+ PERROR("Couldn't map p2m table");
+ goto out;
+ }
+
+ *pfnp = max_pfn;
+
+
+ ret = 0;
+
+out:
+ err = errno;
+
+ if ( live_shinfo )
+ munmap(live_shinfo, PAGE_SIZE);
+
+ if ( live_p2m_frame_list_list )
+ munmap(live_p2m_frame_list_list, PAGE_SIZE);
+
+ if ( live_p2m_frame_list )
+ munmap(live_p2m_frame_list, P2M_FLL_ENTRIES * PAGE_SIZE);
+
+ errno = err;
+ return ret;
+}
+#elif defined (__ia64__)
+#define ELF_ARCH_DATA ELFDATA2LSB
+#define ELF_ARCH_MACHINE EM_IA64
+
+static int
+is_auto_translated_physmap(const xc_dominfo_t *info)
+{
+ /*
+ * on ia64, both paravirtualize domain and hvm domain are
+ * auto_translated_physmap mode
+ */
+ return 1;
+}
+
+#include "xc_efi.h"
+
+static int
+memory_map_get(int xc_handle, xc_dominfo_t *info,
+ memory_map_entry_t **mapp, unsigned int *nr_entries)
+{
+ /* TODO XXX
+ * get efi memory descriptor via shared_info and then
+ * create memory_map_entry_t.
+ */
+
+ errno = ENOSYS;
+ return -1;
+}
+
+static int
+map_p2m(int xc_handle, xc_dominfo_t *info, xen_pfn_t **live_p2m,
+ unsigned long *pfnp)
+{
+ /*
+ * on ia64, both paravirtualize domain and hvm domain are
+ * auto_translated_physmap mode
+ */
+ errno = ENOSYS;
+ return -1;
+}
+#else
+# error "unsupported architecture"
+#endif
+
+#ifndef ELF_CORE_EFLAGS
+#define ELF_CORE_EFLAGS 0
+#endif
+
+/* string table */
+struct strtab {
+ char *strings;
+ uint16_t current;
+ uint16_t max;
+};
+
+static struct strtab*
+strtab_init(void)
+{
+ struct strtab *strtab;
+ char *strings;
+ strtab = malloc(sizeof(strtab));
+ if ( strtab == NULL )
+ return NULL;
+
+ strings = malloc(PAGE_SIZE);
+ if ( strings == NULL )
+ {
+ PERROR("Could not allocate string table init");
+ free(strtab);
+ return NULL;
+ }
+ strtab->strings = strings;
+ strtab->max = PAGE_SIZE;
+
+ /* index 0 represents none */
+ strtab->strings[0] = '\0';
+ strtab->current = 1;
+
+ return strtab;
+}
+
+static void
+strtab_free(struct strtab *strtab)
+{
+ free(strtab->strings);
+ free(strtab);
+}
+
+static uint16_t
+strtab_get(struct strtab *strtab, const char *name)
+{
+ uint16_t ret = 0;
+ uint16_t len = strlen(name) + 1;
+
+ if ( strtab->current + len > strtab->max )
+ {
+ char *tmp;
+ if ( strtab->max * 2 < strtab->max )
+ {
+ PERROR("too long string table");
+ errno = ENOMEM;
+ return ret;
+ }
+
+
+ tmp = realloc(strtab->strings, strtab->max * 2);
+ if ( tmp == NULL )
+ {
+ PERROR("Could not allocate string table");
+ return ret;
+ }
+
+ strtab->strings = tmp;
+ strtab->max *= 2;
+ }
+
+ ret = strtab->current;
+ strcpy(strtab->strings + strtab->current, name);
+ strtab->current += len;
+ return ret;
+}
+
+
+/* section headers */
+struct section_headers {
+ uint16_t num;
+ uint16_t num_max;
+
+ Elf_Shdr *shdrs;
+};
+#define SHDR_INIT 5 /* Currently the following 5 section is used
+ * null section
+ * .note.Xen,
+ * .Xen.p2m or .Xen.pfn,
+ * .Xen.pages
+ * .shstrtab,
+ */
+#define SHDR_INC 4
+
+static struct section_headers*
+shdr_init(void)
+{
+ struct section_headers *sheaders;
+ sheaders = malloc(sizeof(*sheaders));
+ if ( sheaders == NULL )
+ return NULL;
+
+ sheaders->num = 0;
+ sheaders->num_max = SHDR_INIT;
+ sheaders->shdrs = malloc(sizeof(sheaders->shdrs[0]) * sheaders->num_max);
+ if ( sheaders->shdrs == NULL )
+ {
+ free(sheaders);
+ return NULL;
+ }
+ return sheaders;
+}
+
+static void
+shdr_free(struct section_headers *sheaders)
+{
+ free(sheaders->shdrs);
+ free(sheaders);
+}
+
+static Elf_Shdr*
+shdr_get(struct section_headers *sheaders)
+{
+ Elf_Shdr *shdr;
+
+ if ( sheaders->num == sheaders->num_max )
+ {
+ Elf_Shdr *shdrs;
+ if ( sheaders->num_max + SHDR_INC < sheaders->num_max )
+ {
+ errno = E2BIG;
+ return NULL;
+ }
+ sheaders->num_max += SHDR_INC;
+ shdrs = realloc(sheaders->shdrs,
+ sizeof(sheaders->shdrs[0]) * sheaders->num_max);
+ if ( shdrs == NULL )
+ return NULL;
+ sheaders->shdrs = shdrs;
+ }
+
+ shdr = &sheaders->shdrs[sheaders->num];
+ sheaders->num++;
+ memset(shdr, 0, sizeof(*shdr));
+ return shdr;
+}
+
+static int
+shdr_set(Elf_Shdr *shdr,
+ struct strtab *strtab, const char *name, uint32_t type,
+ uint64_t offset, uint64_t size, uint64_t addralign, uint64_t entsize)
+{
+ uint64_t name_idx = strtab_get(strtab, name);
+ if ( name_idx == 0 )
+ return -1;
+
+ shdr->sh_name = name_idx;
+ shdr->sh_type = type;
+ shdr->sh_offset = offset;
+ shdr->sh_size = size;
+ shdr->sh_addralign = addralign;
+ shdr->sh_entsize = entsize;
+ return 0;
+}
+
+static int
+elfnote_fill_xen_version(int xc_handle,
+ struct xen_elfnote_dumpcore_xen_version_desc
+ *xen_version)
+{
+ int rc;
+ memset(xen_version, 0, sizeof(*xen_version));
+
+ rc = xc_version(xc_handle, XENVER_version, NULL);
+ if ( rc < 0 )
+ return rc;
+ xen_version->major_version = rc >> 16;
+ xen_version->minor_version = rc & ((1 << 16) - 1);
+
+ rc = xc_version(xc_handle, XENVER_extraversion,
+ &xen_version->extra_version);
+ if ( rc < 0 )
+ return rc;
+
+ rc = xc_version(xc_handle, XENVER_compile_info,
+ &xen_version->compile_info);
+ if ( rc < 0 )
+ return rc;
+
+ rc = xc_version(xc_handle, XENVER_changeset, &xen_version->changeset);
+ if ( rc < 0 )
+ return rc;
+
+ rc = xc_version(xc_handle, XENVER_pagesize, NULL);
+ if ( rc < 0 )
+ return rc;
+ xen_version->pagesize = rc;
+
+ return 0;
+}
+
+static int
+elfnote_fill_format_version(struct xen_elfnote_dumpcore_format_version_desc
+ *format_version)
+{
+ format_version->major = XEN_DUMPCORE_FORMAT_MAJOR_VERSION;
+ format_version->minor = XEN_DUMPCORE_FORMAT_MINOR_VERSION;
+ format_version->extra = XEN_DUMPCORE_FORMAT_EXTRA_VERSION;
+ return 0;
+}
+
int
xc_domain_dumpcore_via_callback(int xc_handle,
uint32_t domid,
void *args,
dumpcore_rtn_t dump_rtn)
{
- unsigned long nr_pages;
- uint64_t *page_array = NULL;
xc_dominfo_t info;
- int i, nr_vcpus = 0;
+ int nr_vcpus = 0;
char *dump_mem, *dump_mem_start = NULL;
- struct xc_core_header header;
vcpu_guest_context_t ctxt[MAX_VIRT_CPUS];
char dummy[PAGE_SIZE];
int dummy_len;
- int sts;
+ int sts = -1;
+
+ unsigned long i;
+ unsigned long j;
+ unsigned long nr_pages;
+
+ memory_map_entry_t *memory_map = NULL;
+ unsigned int nr_memory_map;
+ unsigned int map_idx;
+
+ int auto_translated_physmap;
+ xen_pfn_t *p2m = NULL;
+ unsigned long max_pfn = 0;
+ struct p2m *p2m_array = NULL;
+
+ uint64_t *pfn_array = NULL;
+
+ Elf_Ehdr ehdr;
+ unsigned long filesz;
+ unsigned long offset;
+ unsigned long fixup;
+
+ struct strtab *strtab = NULL;
+ uint16_t strtab_idx;
+ struct section_headers *sheaders = NULL;
+ Elf_Shdr *shdr;
+
+ /* elf notes */
+ struct xen_elfnote elfnote;
+ struct xen_elfnote_dumpcore_none_desc none;
+ struct xen_elfnote_dumpcore_header_desc header;
+ struct xen_elfnote_dumpcore_xen_version_desc xen_version;
+ struct xen_elfnote_dumpcore_format_version_desc format_version;
if ( (dump_mem_start = malloc(DUMP_INCREMENT*PAGE_SIZE)) == NULL )
{
PERROR("Could not allocate dump_mem");
- goto error_out;
+ goto out;
}
if ( xc_domain_getinfo(xc_handle, domid, 1, &info) != 1 )
{
PERROR("Could not get info for domain");
- goto error_out;
- }
+ goto out;
+ }
+ auto_translated_physmap = is_auto_translated_physmap(&info);
if ( domid != info.domid )
{
PERROR("Domain %d does not exist", domid);
- goto error_out;
+ goto out;
}
for ( i = 0; i <= info.max_vcpu_id; i++ )
- if ( xc_vcpu_getcontext(xc_handle, domid, i, &ctxt[nr_vcpus]) == 0)
+ if ( xc_vcpu_getcontext(xc_handle, domid, i, &ctxt[nr_vcpus]) == 0 )
nr_vcpus++;
+ if ( nr_vcpus == 0 )
+ {
+ PERROR("No VCPU context could be grabbed");
+ goto out;
+ }
+
+ /* obtain memory map */
+ sts = memory_map_get(xc_handle, &info, &memory_map, &nr_memory_map);
+ if ( sts != 0 )
+ goto out;
nr_pages = info.nr_pages;
-
+ if ( !auto_translated_physmap )
+ {
+ /* obtain p2m table */
+ p2m_array = malloc(nr_pages * sizeof(struct p2m));
+ if ( p2m_array == NULL )
+ {
+ PERROR("Could not allocate p2m array");
+ goto out;
+ }
+
+ sts = map_p2m(xc_handle, &info, &p2m, &max_pfn);
+ if ( sts != 0 )
+ goto out;
+ }
+ else
+ {
+ pfn_array = malloc(nr_pages * sizeof(pfn_array[0]));
+ if ( pfn_array == NULL )
+ {
+ PERROR("Could not allocate pfn array");
+ goto out;
+ }
+ }
+
+ /* create .Xen.p2m or .Xen.pfn */
+ j = 0;
+ for ( map_idx = 0; map_idx < nr_memory_map; map_idx++ )
+ {
+ uint64_t pfn_start;
+ uint64_t pfn_end;
+
+ pfn_start = memory_map[map_idx].addr >> PAGE_SHIFT;
+ pfn_end = pfn_start + (memory_map[map_idx].size >> PAGE_SHIFT);
+ for ( i = pfn_start; i < pfn_end; i++ )
+ {
+ if ( !auto_translated_physmap )
+ {
+ if ( p2m[i] == INVALID_P2M_ENTRY )
+ continue;
+ p2m_array[j].pfn = i;
+ p2m_array[j].gmfn = p2m[i];
+ }
+ 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 )
+ continue;
+ munmap(vaddr, PAGE_SIZE);
+ pfn_array[j] = i;
+ }
+
+ j++;
+ }
+ }
+ if ( j != nr_pages )
+ {
+ PERROR("j (%ld) != nr_pages (%ld)", j , nr_pages);
+ /* When live dump-mode (-L option) is specified,
+ * guest domain may change its mapping.
+ */
+ 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] = ELFCLASS;
+ 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(Elf_Phdr);
+ ehdr.e_phnum = 0;
+ ehdr.e_shentsize = sizeof(Elf_Shdr);
+ /* ehdr.e_shnum and ehdr.e_shstrndx aren't known here yet. fill it later*/
+
+ /* create section header */
+ strtab = strtab_init();
+ if ( strtab == NULL )
+ {
+ PERROR("Could not allocate string table");
+ goto out;
+ }
+ sheaders = shdr_init();
+ if ( sheaders == NULL )
+ {
+ PERROR("Could not allocate section headers");
+ goto out;
+ }
+ /* null section */
+ shdr = shdr_get(sheaders);
+ if ( shdr == NULL )
+ {
+ PERROR("Could not get section header for null section");
+ goto out;
+ }
+
+ /* .shstrtab */
+ shdr = shdr_get(sheaders);
+ if ( shdr == NULL )
+ {
+ PERROR("Could not get section header for shstrtab");
+ goto out;
+ }
+ strtab_idx = shdr - sheaders->shdrs;
+ /* strtab_shdr.sh_offset, strtab_shdr.sh_size aren't unknown.
+ * fill it later
+ */
+ sts = shdr_set(shdr, strtab, ELF_SHSTRTAB, SHT_STRTAB, 0, 0, 0, 0);
+ if ( sts != 0 )
+ goto out;
+
+ /* elf note section */
+ /* here the number of section header is unknown. fix up offset later. */
+ offset = sizeof(ehdr);
+ filesz =
+ sizeof(struct xen_elfnote_dumpcore_none) + /* none */
+ sizeof(struct xen_elfnote_dumpcore_header) + /* core header */
+ sizeof(struct xen_elfnote_dumpcore_xen_version) + /* xen version */
+ sizeof(struct xen_elfnote_dumpcore_format_version) + /* format version
*/
+ sizeof(struct xen_elfnote_dumpcore_prstatus) + sizeof(ctxt[0]) *
nr_vcpus; /* vcpu context */
+ shdr = shdr_get(sheaders);
+ if ( shdr == NULL )
+ {
+ PERROR("Could not get section header for note section");
+ goto out;
+ }
+ sts = shdr_set(shdr, strtab, ELF_SEC_XEN_NOTE, SHT_NOTE, offset, filesz,
+ 0, 0);
+ if ( sts != 0 )
+ goto out;
+
+ /* p2m/pfn table*/
+ offset += filesz;
+ shdr = shdr_get(sheaders);
+ if ( shdr == NULL )
+ {
+ PERROR("Could not get section header for .Xen.{p2m, pfn} table");
+ goto out;
+ }
+ if ( !auto_translated_physmap )
+ {
+ filesz = nr_pages * sizeof(p2m_array[0]);
+ sts = shdr_set(shdr, strtab, ELF_SEC_XEN_P2M, SHT_PROGBITS,
+ offset, filesz,
+ __alignof__(p2m_array[0]), sizeof(p2m_array[0]));
+ if ( sts != 0 )
+ goto out;
+ }
+ else
+ {
+ filesz = nr_pages * sizeof(pfn_array[0]);
+ sts = shdr_set(shdr, strtab, ELF_SEC_XEN_PFN, SHT_PROGBITS,
+ offset, filesz,
+ __alignof__(pfn_array[0]), sizeof(pfn_array[0]));
+ if ( sts != 0 )
+ goto out;
+ }
+
+ /* pages */
+ offset += filesz;
+ shdr = shdr_get(sheaders);
+ if ( shdr == NULL )
+ {
+ PERROR("could not get section headers for .Xen.pages");
+ goto out;
+ }
+
+ /*
+ * pages are the last section to allocate section headers
+ * so that we know the number of section headers here.
+ */
+ fixup = sheaders->num * sizeof(*shdr);
+ /* zeroth section should have zero offset */
+ for ( i = 1; i < sheaders->num; i++ )
+ sheaders->shdrs[i].sh_offset += fixup;
+ offset += fixup;
+ dummy_len = ROUNDUP(offset, PAGE_SHIFT) - offset; /* padding length */
+ offset += dummy_len;
+
+ filesz = nr_pages * PAGE_SIZE;
+ sts = shdr_set(shdr, strtab, ELF_SEC_XEN_PAGES, SHT_PROGBITS,
+ offset, filesz, PAGE_SIZE, PAGE_SIZE);
+ if ( sts != 0 )
+ goto out;
+
+ /* fixing up section header string table section header */
+ offset += filesz;
+ filesz = strtab->current;
+ sheaders->shdrs[strtab_idx].sh_offset = offset;
+ sheaders->shdrs[strtab_idx].sh_size = filesz;
+
+ /* write out elf header */
+ ehdr.e_shnum = sheaders->num;
+ ehdr.e_shstrndx = strtab_idx;
+ sts = dump_rtn(args, (char*)&ehdr, sizeof(ehdr));
+ if ( sts != 0 )
+ goto out;
+
+ /* section headers */
+ sts = dump_rtn(args, (char*)sheaders->shdrs,
+ sheaders->num * sizeof(sheaders->shdrs[0]));
+ if ( sts != 0 )
+ goto out;
+
+ /* elf note section */
+ memset(&elfnote, 0, sizeof(elfnote));
+ elfnote.namesz = strlen(XEN_ELFNOTE_NAME) + 1;
+ strncpy(elfnote.name, XEN_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_ctxt_offset = sizeof(struct xc_core_header);
- header.xch_index_offset = sizeof(struct xc_core_header) +
- sizeof(vcpu_guest_context_t)*nr_vcpus;
- dummy_len = (sizeof(struct xc_core_header) +
- (sizeof(vcpu_guest_context_t) * nr_vcpus) +
- (nr_pages * sizeof(*page_array)));
- header.xch_pages_offset = round_pgup(dummy_len);
-
- sts = dump_rtn(args, (char *)&header, sizeof(struct xc_core_header));
- if ( sts != 0 )
- goto error_out;
-
+ 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));
+ 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));
+ 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));
+ if ( sts != 0 )
+ goto out;
+
+ /* note section:xen vcpu prstatus */
+ elfnote.descsz = sizeof(ctxt[0]) * nr_vcpus;
+ elfnote.type = XEN_ELFNOTE_DUMPCORE_PRSTATUS;
+ sts = dump_rtn(args, (char*)&elfnote, sizeof(elfnote));
+ if ( sts != 0 )
+ goto out;
sts = dump_rtn(args, (char *)&ctxt, sizeof(ctxt[0]) * nr_vcpus);
if ( sts != 0 )
- goto error_out;
-
- if ( (page_array = malloc(nr_pages * sizeof(*page_array))) == NULL )
- {
- IPRINTF("Could not allocate memory\n");
- goto error_out;
- }
- if ( xc_get_pfn_list(xc_handle, domid, page_array, nr_pages) != nr_pages )
- {
- IPRINTF("Could not get the page frame list\n");
- goto error_out;
- }
- sts = dump_rtn(args, (char *)page_array, nr_pages * sizeof(*page_array));
- if ( sts != 0 )
- goto error_out;
+ goto out;
+
+ /* p2m/pfn table: .Xen.p2m/.Xen.pfn */
+ if ( !auto_translated_physmap )
+ sts = dump_rtn(args, (char *)p2m_array,
+ sizeof(p2m_array[0]) * nr_pages);
+ else
+ sts = dump_rtn(args, (char *)pfn_array,
+ sizeof(pfn_array[0]) * nr_pages);
+ if ( sts != 0 )
+ goto out;
/* Pad the output data to page alignment. */
memset(dummy, 0, PAGE_SIZE);
- sts = dump_rtn(args, dummy, header.xch_pages_offset - dummy_len);
- if ( sts != 0 )
- goto error_out;
-
+ sts = dump_rtn(args, dummy, dummy_len);
+ if ( sts != 0 )
+ goto out;
+
+ /* dump pages: .Xen.pages */
for ( dump_mem = dump_mem_start, i = 0; i < nr_pages; i++ )
{
- copy_from_domain_page(xc_handle, domid, page_array[i], dump_mem);
+ uint64_t gmfn;
+ if ( !auto_translated_physmap )
+ gmfn = p2m_array[i].gmfn;
+ else
+ gmfn = pfn_array[i];
+
+ copy_from_domain_page(xc_handle, domid, gmfn, dump_mem);
dump_mem += PAGE_SIZE;
if ( ((i + 1) % DUMP_INCREMENT == 0) || ((i + 1) == nr_pages) )
{
- sts = dump_rtn(args, dump_mem_start, dump_mem - dump_mem_start);
+ sts = dump_rtn(args, dump_mem_start,
+ dump_mem - dump_mem_start);
if ( sts != 0 )
- goto error_out;
+ goto out;
dump_mem = dump_mem_start;
}
}
- free(dump_mem_start);
- free(page_array);
- return 0;
-
- error_out:
- free(dump_mem_start);
- free(page_array);
- return -1;
+ /* elf section header string table: .shstrtab */
+ sts = dump_rtn(args, strtab->strings, strtab->current);
+ if ( sts != 0 )
+ goto out;
+
+ sts = 0;
+
+out:
+ if ( p2m != NULL )
+ munmap(p2m, PAGE_SIZE * P2M_FL_ENTRIES);
+ if ( p2m_array != NULL )
+ free(p2m_array);
+ if ( pfn_array != NULL )
+ free(pfn_array);
+ if ( sheaders != NULL )
+ shdr_free(sheaders);
+ if ( strtab != NULL )
+ strtab_free(strtab);
+ if ( dump_mem_start != NULL )
+ free(dump_mem_start);
+ return sts;
}
/* Callback args for writing to a local dump file. */
diff -r 659afa1ed4fb -r 97f27d9d002e tools/libxc/xc_core.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/libxc/xc_core.h Tue Jan 30 11:36:32 2007 +0900
@@ -0,0 +1,117 @@
+/*
+ * Copyright (c) 2006 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ *
+ * 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef XC_CORE_H
+#define XC_CORE_H
+
+#include "xen/version.h"
+
+/* section names */
+#define ELF_SEC_XEN_NOTE ".note.Xen"
+#define ELF_SEC_XEN_P2M ".Xen.p2m"
+#define ELF_SEC_XEN_PFN ".Xen.pfn"
+#define ELF_SEC_XEN_PAGES ".Xen.pages"
+
+/* elf note name */
+#define XEN_ELFNOTE_NAME "Xen"
+/* note numbers are defined in xen/elfnote.h */
+
+#define XEN_DUMPCORE_FORMAT_MAJOR_VERSION 0
+#define XEN_DUMPCORE_FORMAT_MINOR_VERSION 0
+#define XEN_DUMPCORE_FORMAT_EXTRA_VERSION 1
+
+struct xen_elfnote {
+ uint32_t namesz; /* Elf_Note note; */
+ uint32_t descsz;
+ uint32_t type;
+ char name[4]; /* sizeof("Xen") = 4
+ * Fotunately this is 64bit aligned so that
+ * we can use same structore for both 32/64bit
+ */
+};
+
+struct xen_elfnote_dumpcore_none_desc {
+ /* nothing */
+};
+
+struct xen_elfnote_dumpcore_header_desc {
+ uint64_t xch_magic;
+ uint64_t xch_nr_vcpus;
+ uint64_t xch_nr_pages;
+ uint64_t xch_page_size;
+};
+
+struct xen_elfnote_dumpcore_xen_version_desc {
+ uint64_t major_version;
+ uint64_t minor_version;
+ xen_extraversion_t extra_version;
+ xen_compile_info_t compile_info;
+ xen_changeset_info_t changeset;
+ uint64_t pagesize;
+};
+
+struct xen_elfnote_dumpcore_format_version_desc {
+ uint64_t major;
+ uint64_t minor;
+ uint64_t extra;
+};
+
+
+struct xen_elfnote_dumpcore_none {
+ struct xen_elfnote elfnote;
+ struct xen_elfnote_dumpcore_none_desc none;
+};
+
+struct xen_elfnote_dumpcore_header {
+ struct xen_elfnote elfnote;
+ struct xen_elfnote_dumpcore_header_desc header;
+};
+
+struct xen_elfnote_dumpcore_xen_version {
+ struct xen_elfnote elfnote;
+ struct xen_elfnote_dumpcore_xen_version_desc xen_version;
+};
+
+struct xen_elfnote_dumpcore_format_version {
+ struct xen_elfnote elfnote;
+ struct xen_elfnote_dumpcore_format_version_desc format_version;
+};
+
+struct xen_elfnote_dumpcore_prstatus {
+ struct xen_elfnote elfnote;
+ vcpu_guest_context_t ctxt[0];
+};
+
+struct p2m {
+ uint64_t pfn;
+ uint64_t gmfn;
+};
+
+#endif /* XC_CORE_H */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff -r 659afa1ed4fb -r 97f27d9d002e tools/libxc/xc_efi.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/libxc/xc_efi.h Tue Jan 30 11:36:32 2007 +0900
@@ -0,0 +1,68 @@
+#ifndef XC_EFI_H
+#define XC_EFI_H
+
+/* definitions from xen/include/asm-ia64/linux-xen/linux/efi.h */
+
+/*
+ * Extensible Firmware Interface
+ * Based on 'Extensible Firmware Interface Specification' version 0.9, April
30, 1999
+ *
+ * Copyright (C) 1999 VA Linux Systems
+ * Copyright (C) 1999 Walt Drummond <drummond@xxxxxxxxxxx>
+ * Copyright (C) 1999, 2002-2003 Hewlett-Packard Co.
+ * David Mosberger-Tang <davidm@xxxxxxxxxx>
+ * Stephane Eranian <eranian@xxxxxxxxxx>
+ */
+
+/*
+ * Memory map descriptor:
+ */
+
+/* Memory types: */
+#define EFI_RESERVED_TYPE 0
+#define EFI_LOADER_CODE 1
+#define EFI_LOADER_DATA 2
+#define EFI_BOOT_SERVICES_CODE 3
+#define EFI_BOOT_SERVICES_DATA 4
+#define EFI_RUNTIME_SERVICES_CODE 5
+#define EFI_RUNTIME_SERVICES_DATA 6
+#define EFI_CONVENTIONAL_MEMORY 7
+#define EFI_UNUSABLE_MEMORY 8
+#define EFI_ACPI_RECLAIM_MEMORY 9
+#define EFI_ACPI_MEMORY_NVS 10
+#define EFI_MEMORY_MAPPED_IO 11
+#define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12
+#define EFI_PAL_CODE 13
+#define EFI_MAX_MEMORY_TYPE 14
+
+/* Attribute values: */
+#define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */
+#define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /*
write-coalescing */
+#define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /*
write-through */
+#define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back
*/
+#define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /*
write-protect */
+#define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /*
read-protect */
+#define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /*
execute-protect */
+#define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range
requires runtime mapping */
+#define EFI_MEMORY_DESCRIPTOR_VERSION 1
+
+#define EFI_PAGE_SHIFT 12
+
+/*
+ * For current x86 implementations of EFI, there is
+ * additional padding in the mem descriptors. This is not
+ * the case in ia64. Need to have this fixed in the f/w.
+ */
+typedef struct {
+ u32 type;
+ u32 pad;
+ u64 phys_addr;
+ u64 virt_addr;
+ u64 num_pages;
+ u64 attribute;
+#if defined (__i386__)
+ u64 pad1;
+#endif
+} efi_memory_desc_t;
+
+#endif /* XC_EFI_H */
diff -r 659afa1ed4fb -r 97f27d9d002e tools/libxc/xenctrl.h
--- a/tools/libxc/xenctrl.h Mon Jan 29 14:07:26 2007 +0900
+++ b/tools/libxc/xenctrl.h Tue Jan 30 11:36:32 2007 +0900
@@ -552,6 +552,11 @@ unsigned long xc_translate_foreign_addre
unsigned long xc_translate_foreign_address(int xc_handle, uint32_t dom,
int vcpu, unsigned long long virt);
+
+/**
+ * DEPRECATED. Avoid using this, as it does not correctly account for PFNs
+ * without a backing MFN.
+ */
int xc_get_pfn_list(int xc_handle, uint32_t domid, uint64_t *pfn_buf,
unsigned long max_pfns);
diff -r 659afa1ed4fb -r 97f27d9d002e tools/libxc/xg_private.h
--- a/tools/libxc/xg_private.h Mon Jan 29 14:07:26 2007 +0900
+++ b/tools/libxc/xg_private.h Tue Jan 30 11:36:32 2007 +0900
@@ -139,6 +139,23 @@ typedef l4_pgentry_64_t l4_pgentry_t;
#define PAGE_SIZE_IA64 (1UL << PAGE_SHIFT_IA64)
#define PAGE_MASK_IA64 (~(PAGE_SIZE_IA64-1))
+#define ROUNDUP(_x,_w) (((unsigned long)(_x)+(1UL<<(_w))-1) & ~((1UL<<(_w))-1))
+
+/* Size in bytes of the P2M (rounded up to the nearest PAGE_SIZE bytes) */
+#define P2M_SIZE ROUNDUP((max_pfn * sizeof(xen_pfn_t)), PAGE_SHIFT)
+
+/* Number of xen_pfn_t in a page */
+#define fpp (PAGE_SIZE/sizeof(xen_pfn_t))
+
+/* Number of entries in the pfn_to_mfn_frame_list_list */
+#define P2M_FLL_ENTRIES (((max_pfn)+(fpp*fpp)-1)/(fpp*fpp))
+
+/* Number of entries in the pfn_to_mfn_frame_list */
+#define P2M_FL_ENTRIES (((max_pfn)+fpp-1)/fpp)
+
+/* Size in bytes of the pfn_to_mfn_frame_list */
+#define P2M_FL_SIZE ((P2M_FL_ENTRIES)*sizeof(unsigned long))
+
struct domain_setup_info
{
uint64_t v_start;
diff -r 659afa1ed4fb -r 97f27d9d002e tools/libxc/xg_save_restore.h
--- a/tools/libxc/xg_save_restore.h Mon Jan 29 14:07:26 2007 +0900
+++ b/tools/libxc/xg_save_restore.h Tue Jan 30 11:36:32 2007 +0900
@@ -81,7 +81,6 @@ static inline int get_platform_info(int
*/
#define PFN_TO_KB(_pfn) ((_pfn) << (PAGE_SHIFT - 10))
-#define ROUNDUP(_x,_w) (((unsigned long)(_x)+(1UL<<(_w))-1) & ~((1UL<<(_w))-1))
/*
@@ -94,25 +93,5 @@ static inline int get_platform_info(int
#define M2P_SIZE(_m) ROUNDUP(((_m) * sizeof(xen_pfn_t)), M2P_SHIFT)
#define M2P_CHUNKS(_m) (M2P_SIZE((_m)) >> M2P_SHIFT)
-/* Size in bytes of the P2M (rounded up to the nearest PAGE_SIZE bytes) */
-#define P2M_SIZE ROUNDUP((max_pfn * sizeof(xen_pfn_t)), PAGE_SHIFT)
-
-/* Number of xen_pfn_t in a page */
-#define fpp (PAGE_SIZE/sizeof(xen_pfn_t))
-
-/* Number of entries in the pfn_to_mfn_frame_list */
-#define P2M_FL_ENTRIES (((max_pfn)+fpp-1)/fpp)
-
-/* Size in bytes of the pfn_to_mfn_frame_list */
-#define P2M_FL_SIZE ((P2M_FL_ENTRIES)*sizeof(unsigned long))
-
-/* Number of entries in the pfn_to_mfn_frame_list_list */
-#define P2M_FLL_ENTRIES (((max_pfn)+(fpp*fpp)-1)/(fpp*fpp))
-
/* Returns TRUE if the PFN is currently mapped */
#define is_mapped(pfn_type) (!((pfn_type) & 0x80000000UL))
-
-#define INVALID_P2M_ENTRY (~0UL)
-
-
-
diff -r 659afa1ed4fb -r 97f27d9d002e xen/include/public/elfnote.h
--- a/xen/include/public/elfnote.h Mon Jan 29 14:07:26 2007 +0900
+++ b/xen/include/public/elfnote.h Tue Jan 30 11:36:32 2007 +0900
@@ -169,6 +169,49 @@
*/
#define XEN_ELFNOTE_CRASH_REGS 0x1000002
+
+/*
+ * xen dump-core none note.
+ * xm dump-core code will create one XEN_ELFNOTE_DUMPCORE_NONE
+ * in its dump file to indicate that the file is xen dump-core
+ * file. This notes doesn't have any other infomation.
+ * See tools/libxc/xc_core.h for more infomration.
+ */
+#define XEN_ELFNOTE_DUMPCORE_NONE 0x2000000
+
+/*
+ * xen dump-core header note.
+ * xm dump-core code will create one XEN_ELFNOTE_DUMPCORE_HEADER
+ * in its dump file. Its contains some magic numver and small infomations.
+ * See tools/libxc/xc_core.h for more infomration.
+ */
+#define XEN_ELFNOTE_DUMPCORE_HEADER 0x2000001
+
+/*
+ * xen dump-core xen version note.
+ * xm dump-core code will create one XEN_ELFNOTE_DUMPCORE_XEN_VERSION
+ * in its dump file. Its contains xen vesion which is gotten by
+ * XENVER hypercall.
+ * See tools/libxc/xc_core.h for more infomration.
+ */
+#define XEN_ELFNOTE_DUMPCORE_XEN_VERSION 0x2000002
+
+/*
+ * xen dump-core format version note.
+ * xm dump-core code will create one XEN_ELFNOTE_DUMPCORE_FORMAT_VERSION
+ * in its dump file. Its contains format vesion.
+ * See tools/libxc/xc_core.h for more infomration.
+ */
+#define XEN_ELFNOTE_DUMPCORE_FORMAT_VERSION 0x2000003
+
+/*
+ * xen dump-core prstatus note.
+ * xm dump-core code will create one XEN_ELFNOTE_DUMPCORE_PRSTATUS
+ * in its dump file. Its contains register infomation as vcpu_guest_context_t.
+ * See tools/libxc/xc_core.h for more infomration.
+ */
+#define XEN_ELFNOTE_DUMPCORE_PRSTATUS 0x2000004
+
#endif /* __XEN_PUBLIC_ELFNOTE_H__ */
/*
yamahata
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
 |
Lists.xenproject.org is hosted with RackSpace, monitoring our |