Expose vhost_virtqueue_start(), we need to use it when restarting a
virtqueue.

Signed-off-by: Kangjie Xu <kangjie.xu@linux.alibaba.com>
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
---
 hw/virtio/vhost.c         | 8 ++++----
 include/hw/virtio/vhost.h | 2 ++
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c
index 2419521c36..8bf9ed952e 100644
--- a/hw/virtio/vhost.c
+++ b/hw/virtio/vhost.c
@@ -1081,10 +1081,10 @@ out:
     return ret;
 }
 
-static int vhost_virtqueue_start(struct vhost_dev *dev,
-                                struct VirtIODevice *vdev,
-                                struct vhost_virtqueue *vq,
-                                unsigned idx)
+int vhost_virtqueue_start(struct vhost_dev *dev,
+                          struct VirtIODevice *vdev,
+                          struct vhost_virtqueue *vq,
+                          unsigned idx)
 {
     BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(vdev)));
     VirtioBusState *vbus = VIRTIO_BUS(qbus);
diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h
index d9adbca584..7b4ffc522b 100644
--- a/include/hw/virtio/vhost.h
+++ b/include/hw/virtio/vhost.h
@@ -279,6 +279,8 @@ int vhost_net_set_backend(struct vhost_dev *hdev,
 
 int vhost_device_iotlb_miss(struct vhost_dev *dev, uint64_t iova, int write);
 
+int vhost_virtqueue_start(struct vhost_dev *dev, struct VirtIODevice *vdev,
+                          struct vhost_virtqueue *vq, unsigned idx);
 void vhost_virtqueue_unmap(struct vhost_dev *dev, struct VirtIODevice *vdev,
                            struct vhost_virtqueue *vq, unsigned idx);
 
-- 
2.32.0