virtio-9p: add savem handlers
We don't support migration of mounted 9p shares. This is handled by a migration blocker. One would expect, however, to be able to migrate if the share is unmounted. Unfortunately virtio-9p-device does not register savevm handlers at all ! Migration succeeds and leaves the guest with a dangling device... This patch simply registers migration handlers for virtio-9p-device. Whether migration is possible or not still depends on the migration blocker. Signed-off-by: NGreg Kurz <gkurz@linux.vnet.ibm.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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