diff mbox series

[v2,03/15] include/hw/virtio: document vhost_get_features

Message ID 20220524154056.2896913-4-alex.bennee@linaro.org
State Superseded
Headers show
Series virtio-gpio and various virtio cleanups | expand

Commit Message

Alex Bennée May 24, 2022, 3:40 p.m. UTC 
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
---
 include/hw/virtio/vhost.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

Comments

Stefan Hajnoczi May 25, 2022, 4:06 p.m. UTC | #1 
On Tue, May 24, 2022 at 04:40:44PM +0100, Alex Bennée wrote:
> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
> ---
>  include/hw/virtio/vhost.h | 11 +++++++++++
>  1 file changed, 11 insertions(+)

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
diff mbox series

Patch

diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h
index b291fe4e24..9f9f57c46e 100644
--- a/include/hw/virtio/vhost.h
+++ b/include/hw/virtio/vhost.h
@@ -246,6 +246,17 @@  bool vhost_virtqueue_pending(struct vhost_dev *hdev, int n);
  */
 void vhost_virtqueue_mask(struct vhost_dev *hdev, VirtIODevice *vdev, int n,
                           bool mask);
+
+/**
+ * vhost_get_features() - return a sanitised set of feature bits
+ * @hdev: common vhost_dev structure
+ * @feature_bits: pointer to terminated table of feature bits
+ * @features: original feature set
+ *
+ * This returns a set of features bits that is an intersection of what
+ * is supported by the vhost backend (hdev->features), the supported
+ * feature_bits and the requested feature set.
+ */
 uint64_t vhost_get_features(struct vhost_dev *hdev, const int *feature_bits,
                             uint64_t features);
 void vhost_ack_features(struct vhost_dev *hdev, const int *feature_bits,