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vhost-user: only set slave channel for first vq

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When multiqueue is enabled, a vhost_dev is created for each queue
pair. However, only one slave channel is needed.

Fixes: 4bbeeba023 (vhost-user: add slave-req-fd support)
Cc: marcandre.lureau@redhat.com
Signed-off-by: Adrian Moreno <amorenoz@redhat.com>
Message-Id: <20200121214553.28459-1-amorenoz@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Adrian Moreno 2020-01-21 22:45:53 +01:00 committed by Michael S. Tsirkin
parent fd9b0830b0
commit 67b3965e89
1 changed files with 5 additions and 3 deletions
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8
hw/virtio/vhost-user.c
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@ -1458,9 +1458,11 @@ static int vhost_user_backend_init(struct vhost_dev *dev, void *opaque)
"VHOST_USER_PROTOCOL_F_LOG_SHMFD feature.");
}
err = vhost_setup_slave_channel(dev);
if (err < 0) {
return err;
if (dev->vq_index == 0) {
err = vhost_setup_slave_channel(dev);
if (err < 0) {
return err;
}
}
u->postcopy_notifier.notify = vhost_user_postcopy_notifier;