Message ID | 1376308831-19978-5-git-send-email-mst@redhat.com |
---|---|
State | New |
Headers | show |
diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 8f6ab13..9e336ad 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -762,6 +762,7 @@ static void vhost_virtqueue_stop(struct vhost_dev *dev, fflush(stderr); } virtio_queue_set_last_avail_idx(vdev, idx, state.num); + virtio_queue_invalidate_signalled_used(vdev, idx); assert (r >= 0); cpu_physical_memory_unmap(vq->ring, virtio_queue_get_ring_size(vdev, idx), 0, virtio_queue_get_ring_size(vdev, idx));
When vhost device stops, its implementation synchronizes kernel state back to virtio.c so we can continue emulating the device in userspace. This patch ensures that virtio.c's signalled_used_valid flag is reset so that userspace does not suppress guest notifications due to stale signalled_used values. Cc: qemu-stable@nongnu.org Signed-off-by: Michael S. Tsirkin <mst@redhat.com> --- hw/virtio/vhost.c | 1 + 1 file changed, 1 insertion(+)