[Qemu-devel] [PATCH] snapshot=on and cache=off compatibility

[Laurent Vivier]

This patch allows to use snapshot with disabled host cache 
(i.e. -drive cache=off,snapshot=on).

To do that, memory allocated for snapshot is aligned on a 512 bytes
boundary, and read/write uses offset and count aligned on this value.
When it is not possible or too complex (for instance for some metadata),
the cache is reactivated temporarily.

All comments are welcome,
Laurent

snapshot-cache
Description: Text Data