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introduce a new monitor command 'dump-guest-memory' to dump guest's memory

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The command's usage:
   dump-guest-memory [-p] protocol [begin] [length]
The supported protocol can be file or fd:
1. file: the protocol starts with "file:", and the following string is
   the file's path.
2. fd: the protocol starts with "fd:", and the following string is the
   fd's name.

Note:
  1. If you want to use gdb to process the core, please specify -p option.
     The reason why the -p option is not default is:
       a. guest machine in a catastrophic state can have corrupted memory,
          which we cannot trust.
       b. The guest machine can be in read-mode even if paging is enabled.
          For example: the guest machine uses ACPI to sleep, and ACPI sleep
          state goes in real-mode.
  2. If you don't want to dump all guest's memory, please specify the start
     physical address and the length.

Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
This commit is contained in:
Wen Congyang 2012-05-07 12:10:47 +08:00 • committed by Luiz Capitulino
parent 68f4730c71
commit 783e9b4826
10 changed files with 1050 additions and 0 deletions
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3
memory_mapping.h
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@ -63,6 +63,9 @@ static inline int qemu_get_guest_memory_mapping(MemoryMappingList *list)
/* get guest's memory mapping without do paging(virtual address is 0). */
void qemu_get_guest_simple_memory_mapping(MemoryMappingList *list);
void memory_mapping_filter(MemoryMappingList *list, int64_t begin,
int64_t length);
#else
/* We use MemoryMappingList* in cpu-all.h */