Signed-off-by: Alex Bennée <alex.ben...@linaro.org>
---
include/hw/virtio/vhost.h | 11 +++++++++++
1 file changed, 11 insertions(+)
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,
--
2.30.2
