diff options
| author | Viktor Prutyanov <viktor.prutyanov@virtuozzo.com> | 2018-05-17 19:23:39 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-06-29 13:02:48 +0200 |
| commit | 2da91b54fe98faa8676264ac6e5a3aac5b69bec2 (patch) | |
| tree | b7f41442a04fc203e06dc155eca97f7da55049db /hmp-commands.hx | |
| parent | 2266d44311321a833d569cd4deb46cca6021d0e7 (diff) | |
dump: add Windows dump format to dump-guest-memory
This patch adds Windows crashdumping feature. Now QEMU can produce ELF-dump
containing Windows crashdump header, which can help to convert to a valid
WinDbg-understandable crashdump file, or immediately create such file.
The crashdump will be obtained by joining physical memory dump and 8K header
exposed through vmcoreinfo/fw_cfg device by guest driver at BSOD time. Option
'-w' was added to dump-guest-memory command. At the moment, only x64
configuration is supported.
Suitable driver can be found at
https://github.com/virtio-win/kvm-guest-drivers-windows/tree/master/fwcfg64
Signed-off-by: Viktor Prutyanov <viktor.prutyanov@virtuozzo.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20180517162342.4330-2-viktor.prutyanov@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hmp-commands.hx')
| -rw-r--r-- | hmp-commands.hx | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/hmp-commands.hx b/hmp-commands.hx index ba9cdb8800..c1fc747403 100644 --- a/hmp-commands.hx +++ b/hmp-commands.hx @@ -1136,30 +1136,33 @@ ETEXI { .name = "dump-guest-memory", - .args_type = "paging:-p,detach:-d,zlib:-z,lzo:-l,snappy:-s,filename:F,begin:l?,length:l?", - .params = "[-p] [-d] [-z|-l|-s] filename [begin length]", + .args_type = "paging:-p,detach:-d,windmp:-w,zlib:-z,lzo:-l,snappy:-s,filename:F,begin:l?,length:l?", + .params = "[-p] [-d] [-z|-l|-s|-w] filename [begin length]", .help = "dump guest memory into file 'filename'.\n\t\t\t" "-p: do paging to get guest's memory mapping.\n\t\t\t" "-d: return immediately (do not wait for completion).\n\t\t\t" "-z: dump in kdump-compressed format, with zlib compression.\n\t\t\t" "-l: dump in kdump-compressed format, with lzo compression.\n\t\t\t" "-s: dump in kdump-compressed format, with snappy compression.\n\t\t\t" + "-w: dump in Windows crashdump format (can be used instead of ELF-dump converting),\n\t\t\t" + " for Windows x64 guests with vmcoreinfo driver only.\n\t\t\t" "begin: the starting physical address.\n\t\t\t" "length: the memory size, in bytes.", .cmd = hmp_dump_guest_memory, }, - STEXI @item dump-guest-memory [-p] @var{filename} @var{begin} @var{length} -@item dump-guest-memory [-z|-l|-s] @var{filename} +@item dump-guest-memory [-z|-l|-s|-w] @var{filename} @findex dump-guest-memory Dump guest memory to @var{protocol}. The file can be processed with crash or -gdb. Without -z|-l|-s, the dump format is ELF. +gdb. Without -z|-l|-s|-w, the dump format is ELF. -p: do paging to get guest's memory mapping. -z: dump in kdump-compressed format, with zlib compression. -l: dump in kdump-compressed format, with lzo compression. -s: dump in kdump-compressed format, with snappy compression. + -w: dump in Windows crashdump format (can be used instead of ELF-dump converting), + for Windows x64 guests with vmcoreinfo driver only filename: dump file name. begin: the starting physical address. It's optional, and should be specified together with length. |