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| author | Shriram Rajagopalan <rshriram@cs.ubc.ca> | 2011-12-01 15:36:15 +0000 |
|---|---|---|
| committer | Shriram Rajagopalan <rshriram@cs.ubc.ca> | 2011-12-01 15:36:15 +0000 |
| commit | f6b3d39f5d316079add221d893e28009354b3f07 (patch) | |
| tree | 765693b5557fcde1fe2ae9221b4ea4b97ad4aba0 /tools/libxc/xenguest.h | |
| parent | de869779a0b7c411a69b787ec01b485492b40f32 (diff) | |
| download | xen-f6b3d39f5d316079add221d893e28009354b3f07.tar.gz xen-f6b3d39f5d316079add221d893e28009354b3f07.tar.bz2 xen-f6b3d39f5d316079add221d893e28009354b3f07.zip | |
tools/libxc: Remus Checkpoint Compression
Instead of sending dirty pages of guest memory as-is, use a simple compression
algorithm that sends a RLE-encoded XOR of the page against its last sent copy.
A small LRU cache is used to hold recently dirtied pages. Pagetable pages are
sent as-is, as they are canonicalized at sender side and uncanonicalized at
receiver.
[ Fixed up a conflict in sg_save_restore.h. I had to increase the
ID values used from -11 and -12 to -12 and -13 because -11 had
been taken by ..._HVM_VIRIDIAN in the meantime. -iwj ]
Signed-off-by: Shriram Rajagopalan <rshriram@cs.ubc.ca>
Acked-by: Brendan Cully <brendan@cs.ubc.ca>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
Diffstat (limited to 'tools/libxc/xenguest.h')
| -rw-r--r-- | tools/libxc/xenguest.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/libxc/xenguest.h b/tools/libxc/xenguest.h index 9ed0ea41fe..4475ee92ee 100644 --- a/tools/libxc/xenguest.h +++ b/tools/libxc/xenguest.h @@ -27,6 +27,7 @@ #define XCFLAGS_DEBUG 2 #define XCFLAGS_HVM 4 #define XCFLAGS_STDVGA 8 +#define XCFLAGS_CHECKPOINT_COMPRESS 16 #define X86_64_B_SIZE 64 #define X86_32_B_SIZE 32 |