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authorPankaj Gupta <pagupta@redhat.com>2015-06-16 13:48:59 +0530
committerMichael S. Tsirkin <mst@redhat.com>2015-06-19 12:17:49 +0200
commit1e7398a140f7a6bd9f5a438e7ad0f1ef50990e25 (patch)
treea321d5ab687fbe83abba5c2dfd83d97051abfff0 /hw/net/virtio-net.c
parent74de5504fd063019433ec0746105da774ede790d (diff)
vhost: enable vhost without without MSI-X
We use vhostforce to enable vhost even if Guests don't have MSI-X support and we fall back to QEMU virtio-net. This gives a very small performance gain, but the disadvantage is that guest now controls which virtio code is running (qemu or vhost) so our attack surface is doubled. This patch will enable vhost unconditionally whenever it's requested. For compatibility, enable vhost when vhostforce is set, as well. Signed-off-by: Pankaj Gupta <pagupta@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'hw/net/virtio-net.c')
-rw-r--r--hw/net/virtio-net.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index 9281aa107c..d7282335de 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -128,10 +128,6 @@ static void virtio_net_vhost_status(VirtIONet *n, uint8_t status)
if (!n->vhost_started) {
int r, i;
- if (!vhost_net_query(get_vhost_net(nc->peer), vdev)) {
- return;
- }
-
/* Any packets outstanding? Purge them to avoid touching rings
* when vhost is running.
*/