diff options
| author | Xuan Zhuo <xuanzhuo@linux.alibaba.com> | 2024-09-06 20:31:37 +0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-09-10 09:01:06 -0700 |
| commit | 111fc9f517cb293c4213673733b980123c3b0209 (patch) | |
| tree | 9716ca2c9a025c78a544a5a3774a05f9477a43c7 | |
| parent | 38eef112a8e547b8c207b2a521ad4b077d792100 (diff) | |
virtio_net: disable premapped mode by default
Now, the premapped mode encounters some problem.
http://lore.kernel.org/all/8b20cc28-45a9-4643-8e87-ba164a540c0a@oracle.com
So we disable the premapped mode by default.
We can re-enable it in the future.
Fixes: f9dac92ba908 ("virtio_ring: enable premapped mode whatever use_dma_api")
Reported-by: "Si-Wei Liu" <si-wei.liu@oracle.com>
Closes: http://lore.kernel.org/all/8b20cc28-45a9-4643-8e87-ba164a540c0a@oracle.com
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Takero Funaki <flintglass@gmail.com>
Link: https://patch.msgid.link/20240906123137.108741-4-xuanzhuo@linux.alibaba.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/virtio_net.c | 18 |
1 files changed, 0 insertions, 18 deletions
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 1cf80648f82a..5a1c1ec5a64b 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -977,22 +977,6 @@ static void *virtnet_rq_alloc(struct receive_queue *rq, u32 size, gfp_t gfp) return buf; } -static void virtnet_rq_set_premapped(struct virtnet_info *vi) -{ - int i; - - /* disable for big mode */ - if (!vi->mergeable_rx_bufs && vi->big_packets) - return; - - for (i = 0; i < vi->max_queue_pairs; i++) { - if (virtqueue_set_dma_premapped(vi->rq[i].vq)) - continue; - - vi->rq[i].do_dma = true; - } -} - static void virtnet_rq_unmap_free_buf(struct virtqueue *vq, void *buf) { struct virtnet_info *vi = vq->vdev->priv; @@ -6105,8 +6089,6 @@ static int init_vqs(struct virtnet_info *vi) if (ret) goto err_free; - virtnet_rq_set_premapped(vi); - cpus_read_lock(); virtnet_set_affinity(vi); cpus_read_unlock(); |