| commit | 297a75e6c55d91db2704a3d6e4029d99c7df51fd | |
| author | Stefan Hajnoczi <stefanha@redhat.com> | |
| Wed, 7 Sep 2016 15:20:48 +0000 (7 17:20 +0200) | ||
| committer | Michael S. Tsirkin <mst@redhat.com> | |
| Fri, 9 Sep 2016 17:58:34 +0000 (9 20:58 +0300) | ||
| tree | 43f752f0502cecc089680c1a08dc6b5cb6c3da9c | treesnapshot (tar.gz zip) |
| parent | 104e70cae78bd4afd95d948c6aff188f10508a9c | commitdiff |
virtio: add virtqueue_rewind()
virtqueue_discard() requires a VirtQueueElement but virtio-balloon does
not migrate its in-use element. Introduce a new function that is
similar to virtqueue_discard() but doesn't require a VirtQueueElement.
This will allow virtio-balloon to access element again after migration
with the usual proviso that the guest may have modified the vring since
last time.
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Roman Kagan <rkagan@virtuozzo.com>
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Ladi Prosek <lprosek@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
virtqueue_discard() requires a VirtQueueElement but virtio-balloon does
not migrate its in-use element. Introduce a new function that is
similar to virtqueue_discard() but doesn't require a VirtQueueElement.
This will allow virtio-balloon to access element again after migration
with the usual proviso that the guest may have modified the vring since
last time.
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Roman Kagan <rkagan@virtuozzo.com>
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Ladi Prosek <lprosek@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| hw/virtio/virtio.c | diffblobblamehistory | |
| include/hw/virtio/virtio.h | diffblobblamehistory |