[PATCH 07/31] vhost: dd vhost_svq_get_svq_call_notifier

[Eugenio Pérez]

This allows vhost-vdpa device to retrieve device -> svq call eventfd.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
---
 hw/virtio/vhost-shadow-virtqueue.h |  2 ++
 hw/virtio/vhost-shadow-virtqueue.c | 12 ++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/hw/virtio/vhost-shadow-virtqueue.h 
b/hw/virtio/vhost-shadow-virtqueue.h
index 4c583a9171..a78234b52b 100644
--- a/hw/virtio/vhost-shadow-virtqueue.h
+++ b/hw/virtio/vhost-shadow-virtqueue.h
@@ -18,6 +18,8 @@ typedef struct VhostShadowVirtqueue VhostShadowVirtqueue;
 void vhost_svq_set_svq_kick_fd(VhostShadowVirtqueue *svq, int svq_kick_fd);
 const EventNotifier *vhost_svq_get_dev_kick_notifier(
                                               const VhostShadowVirtqueue *svq);
+const EventNotifier *vhost_svq_get_svq_call_notifier(
+                                              const VhostShadowVirtqueue *svq);
 
 void vhost_svq_stop(VhostShadowVirtqueue *svq);
 
diff --git a/hw/virtio/vhost-shadow-virtqueue.c 
b/hw/virtio/vhost-shadow-virtqueue.c
index 8991f0b3c3..25fcdf16ec 100644
--- a/hw/virtio/vhost-shadow-virtqueue.c
+++ b/hw/virtio/vhost-shadow-virtqueue.c
@@ -55,6 +55,18 @@ static void vhost_handle_guest_kick(EventNotifier *n)
     event_notifier_set(&svq->hdev_kick);
 }
 
+/**
+ * Obtain the SVQ call notifier, where vhost device notifies SVQ that there
+ * exists pending used buffers.
+ *
+ * @svq Shadow Virtqueue
+ */
+const EventNotifier *vhost_svq_get_svq_call_notifier(
+                                               const VhostShadowVirtqueue *svq)
+{
+    return &svq->hdev_call;
+}
+
 /**
  * Set a new file descriptor for the guest to kick SVQ and notify for avail
  *
-- 
2.27.0