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H A Dqxl.ce25139b34d27847ff19140adada77ea4c5398863 Wed Feb 15 09:22:15 UTC 2012 Yonit Halperin <yhalperi@redhat.com> qxl: set only off-screen surfaces dirty instead of the whole vram

We used to assure the guest surfaces were saved before migration by
setting the whole vram dirty. This patch sets dirty only the areas
that are actually used in the vram.

Signed-off-by: Yonit Halperin <yhalperi@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>