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vhost: let SET_VRING_ENABLE message depends on protocol feature 

But not depend on PROTOCOL_F_MQ feature bit. So that we could use
SET_VRING_ENABLE to sign the backend on stop, even if MQ is disabled.

That's reasonable, since we will have one queue pair at least.

Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Yuanhan Liu 2015-11-13 15:24:09 +08:00 committed by Michael S. Tsirkin
parent 8337c6cbc3
commit 923e2d98ed
1 changed files with 1 additions and 1 deletions
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2
hw/virtio/vhost-user.c
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@ -338,7 +338,7 @@ static int vhost_user_set_vring_enable(struct vhost_dev *dev, int enable)
.num = enable,
};
if (!(dev->protocol_features & (1ULL << VHOST_USER_PROTOCOL_F_MQ))) {
if (!virtio_has_feature(dev->features, VHOST_USER_F_PROTOCOL_FEATURES)) {
return -1;
}