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| author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2016-07-27 01:15:27 +0400 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2016-07-29 05:47:17 +0300 |
| commit | 499c557975275dba23fbf8f23880815d019ce663 (patch) | |
| tree | b73d31678f2da3f6b44b8bed56fee5873cc7203d | |
| parent | 950d94ba0671e7f154a9e87a277f8efbddcee28f (diff) | |
| download | qemu-499c557975275dba23fbf8f23880815d019ce663.zip | |
vhost: do not update last avail idx on get_vring_base() failure
The state.num value will probably be 0 in this case, but that
doesn't make sense to update.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | hw/virtio/vhost.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index b0e8ecce60..3d0c807d0e 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -945,8 +945,9 @@ static void vhost_virtqueue_stop(struct vhost_dev *dev, r = dev->vhost_ops->vhost_get_vring_base(dev, &state); if (r < 0) { VHOST_OPS_DEBUG("vhost VQ %d ring restore failed: %d", idx, r); + } else { + virtio_queue_set_last_avail_idx(vdev, idx, state.num); } - virtio_queue_set_last_avail_idx(vdev, idx, state.num); virtio_queue_invalidate_signalled_used(vdev, idx); /* In the cross-endian case, we need to reset the vring endianness to |