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| author | Yajun Wu <yajunw@nvidia.com> | 2022-10-17 14:44:51 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2022-11-07 14:08:17 -0500 |
| commit | 8b67fe00652b2640f3f841a7b102f6bcf82483a3 (patch) | |
| tree | 9b720b78f7cd6309fe47e9eedc6cfd33b593db1a /hw/net | |
| parent | 1b2b12376c8a513a0c7b5e3b8ea702038d3d7db5 (diff) | |
| download | qemu-8b67fe00652b2640f3f841a7b102f6bcf82483a3.zip qemu-8b67fe00652b2640f3f841a7b102f6bcf82483a3.tar.gz qemu-8b67fe00652b2640f3f841a7b102f6bcf82483a3.tar.bz2 | |
vhost: Change the sequence of device start
This patch is part of adding vhost-user vhost_dev_start support. The
motivation is to improve backend configuration speed and reduce live
migration VM downtime.
Moving the device start routines after finishing all the necessary device
and VQ configuration, further aligning to the virtio specification for
"device initialization sequence".
Following patch will add vhost-user vhost_dev_start support.
Signed-off-by: Yajun Wu <yajunw@nvidia.com>
Acked-by: Parav Pandit <parav@nvidia.com>
Message-Id: <20221017064452.1226514-2-yajunw@nvidia.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/net')
| -rw-r--r-- | hw/net/vhost_net.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c index 53b2fac..feda448 100644 --- a/hw/net/vhost_net.c +++ b/hw/net/vhost_net.c @@ -389,21 +389,20 @@ int vhost_net_start(VirtIODevice *dev, NetClientState *ncs, } else { peer = qemu_get_peer(ncs, n->max_queue_pairs); } - r = vhost_net_start_one(get_vhost_net(peer), dev); - - if (r < 0) { - goto err_start; - } if (peer->vring_enable) { /* restore vring enable state */ r = vhost_set_vring_enable(peer, peer->vring_enable); if (r < 0) { - vhost_net_stop_one(get_vhost_net(peer), dev); goto err_start; } } + + r = vhost_net_start_one(get_vhost_net(peer), dev); + if (r < 0) { + goto err_start; + } } return 0; |