| commit | a71808772acbea54df8ebf3680f01884f7383198 | |
| author | Dr. David Alan Gilbert <dgilbert@redhat.com> | |
| Thu, 5 Nov 2015 18:11:11 +0000 (5 18:11 +0000) | ||
| committer | Juan Quintela <quintela@redhat.com> | |
| Tue, 10 Nov 2015 14:00:27 +0000 (10 15:00 +0100) | ||
| tree | e89cb8ac291fb6c82ff366991a7a8d1d0dff6488 | treesnapshot (tar.gz zip) |
| parent | 696ed9a9b3fee2d033d7b049ba2e6568860a25d1 | commitdiff |
Postcopy: Use helpers to map pages during migration
In postcopy, the destination guest is running at the same time
as it's receiving pages; as we receive new pages we must put
them into the guests address space atomically to avoid a running
CPU accessing a partially written page.
Use the helpers in postcopy-ram.c to map these pages.
qemu_get_buffer_in_place is used to avoid a copy out of qemu_file
in the case that postcopy is going to do a copy anyway.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
In postcopy, the destination guest is running at the same time
as it's receiving pages; as we receive new pages we must put
them into the guests address space atomically to avoid a running
CPU accessing a partially written page.
Use the helpers in postcopy-ram.c to map these pages.
qemu_get_buffer_in_place is used to avoid a copy out of qemu_file
in the case that postcopy is going to do a copy anyway.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
| migration/ram.c | diffblobblamehistory | |
| trace-events | diffblobblamehistory |