Send SET_VRING_ENABLE at start/stop, to give the backend
an explicit sign of our state.
Signed-off-by: Yuanhan Liu <yuanhan....@linux.intel.com>
---
hw/virtio/vhost.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c
index be48511..0e956b5 100644
--- a/hw/virtio/vhost.c
+++ b/hw/virtio/vhost.c
@@ -1234,6 +1234,11 @@ int vhost_dev_start(struct vhost_dev *hdev, VirtIODevice
*vdev)
}
}
+ if (hdev->vhost_ops->vhost_set_vring_enable) {
+ /* only enable first vq pair by default */
+ hdev->vhost_ops->vhost_set_vring_enable(hdev, hdev->vq_index == 0);
+ }
+
return 0;
fail_log:
vhost_log_put(hdev, false);
@@ -1264,6 +1269,10 @@ void vhost_dev_stop(struct vhost_dev *hdev, VirtIODevice
*vdev)
hdev->vq_index + i);
}
+ if (hdev->vhost_ops->vhost_set_vring_enable) {
+ hdev->vhost_ops->vhost_set_vring_enable(hdev, 0);
+ }
+
vhost_log_put(hdev, true);
hdev->started = false;
hdev->log = NULL;
--
1.9.0
