Commit a220871b authored Dec 13, 2016 by Jason Wang Committed by David S. Miller Dec 13, 2016

virtio-net: correctly enable multiqueue



Commit 44900010 ("virtio-net: enable
multiqueue by default") blindly set the affinity instead of queues
during probe which can cause a mismatch of #queues between guest and
host. This patch fixes it by setting queues.

Reported-by: Theodore Ts'o <tytso@mit.edu>
Tested-by: Theodore Ts'o <tytso@mit.edu>
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Fixes: 49000102901 ("virtio-net: enable multiqueue by default")
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 8fa3b6f9

drivers/net/virtio_net.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -1930,7 +1930,9 @@ static int virtnet_probe(struct virtio_device *vdev)
		goto free_unregister_netdev;
		}

		virtnet_set_affinity(vi);
		rtnl_lock();
		virtnet_set_queues(vi, vi->curr_queue_pairs);
		rtnl_unlock();

		/* Assume link up if device can't report link status,
		otherwise get link status from config. */

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