[PATCH v2 09/24] vhost: introduce vhost_dev_virtqueue_stop()

[Kangjie Xu]

Introduce vhost_dev_virtqueue_stop(), which can ummap the
vrings and the desc of it.

Signed-off-by: Kangjie Xu <kangjie.xu@linux.alibaba.com>
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
---
 hw/virtio/vhost.c         | 9 +++++++++
 include/hw/virtio/vhost.h | 3 +++
 2 files changed, 12 insertions(+)

diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c
index e467dfc7bc..1bca9ff48d 100644
--- a/hw/virtio/vhost.c
+++ b/hw/virtio/vhost.c
@@ -1904,3 +1904,12 @@ int vhost_net_set_backend(struct vhost_dev *hdev,
 
     return -ENOSYS;
 }
+
+void vhost_dev_virtqueue_stop(struct vhost_dev *hdev, VirtIODevice *vdev,
+                              int idx)
+{
+    vhost_virtqueue_unmap(hdev,
+                          vdev,
+                          hdev->vqs + idx,
+                          idx);
+}
diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h
index a346f23d13..574888440c 100644
--- a/include/hw/virtio/vhost.h
+++ b/include/hw/virtio/vhost.h
@@ -288,4 +288,7 @@ int vhost_dev_set_inflight(struct vhost_dev *dev,
                            struct vhost_inflight *inflight);
 int vhost_dev_get_inflight(struct vhost_dev *dev, uint16_t queue_size,
                            struct vhost_inflight *inflight);
+
+void vhost_dev_virtqueue_stop(struct vhost_dev *hdev, VirtIODevice *vdev,
+                              int idx);
 #endif
-- 
2.32.0