Re: [PATCH 07/31] vhost: dd vhost_svq_get_svq_call_notifier

[Jason Wang]

在 2022/1/22 上午4:27, Eugenio Pérez 写道:

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

Signed-off-by: Eugenio Pérez <epere...@redhat.com>

What did 'dd' mean in the title?

Thanks

---
  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
   *

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