diff options
| author | Stefan Fritsch <sf@cvs.openbsd.org> | 2014-10-08 20:03:19 +0000 |
|---|---|---|
| committer | Stefan Fritsch <sf@cvs.openbsd.org> | 2014-10-08 20:03:19 +0000 |
| commit | 4fca234da86241cf7a7617fceabf992548ad5f3d (patch) | |
| tree | 93e4cc22aeb547a0ccb5fe8c67dfa2607efcf3e2 /sys/dev | |
| parent | 2136313755d262d4d6a9b0dfae5c73fa6e1a22a7 (diff) | |
publish_avail_idx does not read the used ring, no need to call
bus_dmamap_sync for it.
Diffstat (limited to 'sys/dev')
| -rw-r--r-- | sys/dev/pci/virtio.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/sys/dev/pci/virtio.c b/sys/dev/pci/virtio.c index b6c74cf251f..d8321b8caa5 100644 --- a/sys/dev/pci/virtio.c +++ b/sys/dev/pci/virtio.c @@ -1,4 +1,4 @@ -/* $OpenBSD: virtio.c,v 1.10 2014/10/08 19:59:53 sf Exp $ */ +/* $OpenBSD: virtio.c,v 1.11 2014/10/08 20:03:18 sf Exp $ */ /* $NetBSD: virtio.c,v 1.3 2011/11/02 23:05:52 njoly Exp $ */ /* @@ -656,13 +656,11 @@ static void publish_avail_idx(struct virtio_softc *sc, struct virtqueue *vq) { vq_sync_aring(sc, vq, BUS_DMASYNC_PREWRITE); - vq_sync_uring(sc, vq, BUS_DMASYNC_PREREAD); virtio_membar_producer(); vq->vq_avail->idx = vq->vq_avail_idx; vq_sync_aring(sc, vq, BUS_DMASYNC_POSTWRITE); vq->vq_queued = 1; - vq_sync_uring(sc, vq, BUS_DMASYNC_POSTREAD); } /* |