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authorStefan Hajnoczi <stefanha@redhat.com>2016-08-15 13:54:15 +0100
committerMichael S. Tsirkin <mst@redhat.com>2016-08-23 19:20:10 +0300
commitbccdef6b1a204db0f41ffb6e24ce373e4d7890d4 (patch)
tree1472d6b917593c467287fbc7436490381fd9ff81 /net/socket.c
parent6bbbb0ac136102098a70b97ab0c07bc7bf53131c (diff)
downloadfocaccia-qemu-bccdef6b1a204db0f41ffb6e24ce373e4d7890d4.tar.gz
focaccia-qemu-bccdef6b1a204db0f41ffb6e24ce373e4d7890d4.zip
virtio: recalculate vq->inuse after migration
The vq->inuse field is not migrated.  Many devices don't hold
VirtQueueElements across migration so it doesn't matter that vq->inuse
starts at 0 on the destination QEMU.

At least virtio-serial, virtio-blk, and virtio-balloon migrate while
holding VirtQueueElements.  For these devices we need to recalculate
vq->inuse upon load so the value is correct.

Cc: qemu-stable@nongnu.org
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'net/socket.c')
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