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include/hw/virtio: document vhost_get_features

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Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20220524154056.2896913-4-alex.bennee@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Alex Bennée 2022-05-24 16:40:44 +01:00 committed by Michael S. Tsirkin
parent 26ed501b99
commit 2055c2a454
1 changed files with 11 additions and 0 deletions
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11
include/hw/virtio/vhost.h
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@ -247,6 +247,17 @@ 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,