898ae2846d
Currently, If the setting of video mode failed, qemu will exit. It should go back to the previous setting if the new screen resolution failed. This patch fixes LP#1216368, add support to revert to existing surface for the failure of video mode setting. Reported-by: Sascha Krissler <sascha@srlabs.de> Signed-off-by: Lei Li <lilei@linux.vnet.ibm.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1378285636-7091-1-git-send-email-lilei@linux.vnet.ibm.com Signed-off-by: Anthony Liguori <aliguori@amazon.com>