Documentation/userspace-api/vduse.rst

2 VDUSE - "vDPA Device in Userspace"
9 possible to implement software-emulated vDPA devices in userspace. And
21 ----------------------------
49 .. code-block:: c
59 			return -ENOMEM;
92 		return -1;
96 ---------------
104 add per-virtqueue configuration such as the max size of virtqueue to the device.
111 .. code-block:: c
121 			return -1;
133 			return -1;
140 - VDUSE_GET_VQ_STATE: Get the state for virtqueue, userspace should return
144 - VDUSE_SET_STATUS: Set the device status, userspace should follow
145   the virtio spec: https://docs.oasis-open.org/virtio/virtio/v1.1/virtio-v1.1.html
150 - VDUSE_UPDATE_IOTLB: Notify userspace to update the memory mapping for specified
164 .. code-block:: c
203 		size = entry.last - entry.start + 1;
204 		*len = entry.last - iova + 1;
218 		return addr + iova - entry.start;