diff options
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/dev/virtio/virtqueue.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sys/dev/virtio/virtqueue.c b/sys/dev/virtio/virtqueue.c index dbd55e02e091..b7fdb4703ccb 100644 --- a/sys/dev/virtio/virtqueue.c +++ b/sys/dev/virtio/virtqueue.c @@ -565,6 +565,9 @@ virtqueue_notify(struct virtqueue *vq) /* Ensure updated avail->idx is visible to host. */ bus_dmamap_sync(vq->vq_ring_dmat, vq->vq_ring_mapp, BUS_DMASYNC_PREWRITE); +#if defined(__i386__) || defined(__amd64__) + mb(); +#endif if (vq_ring_must_notify_host(vq)) vq_ring_notify_host(vq); @@ -960,6 +963,9 @@ vq_ring_enable_interrupt(struct virtqueue *vq, uint16_t ndesc) bus_dmamap_sync(vq->vq_ring_dmat, vq->vq_ring_mapp, BUS_DMASYNC_PREWRITE); +#if defined(__i386__) || defined(__amd64__) + mb(); +#endif /* * Enough items may have already been consumed to meet our threshold |