Commit c618c84d authored by Stefano Garzarella's avatar Stefano Garzarella Committed by Michael S. Tsirkin
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vdpa: add bind_mm/unbind_mm callbacks 



These new optional callbacks is used to bind/unbind the device to
a specific address space so the vDPA framework can use VA when
these callbacks are implemented.

Suggested-by: default avatarJason Wang <jasowang@redhat.com>
Acked-by: default avatarJason Wang <jasowang@redhat.com>
Signed-off-by: default avatarStefano Garzarella <sgarzare@redhat.com>
Message-Id: <20230404131326.44403-2-sgarzare@redhat.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent 905233af

include/linux/vdpa.h

+10 −0
Original line number Diff line number Diff line
@@ -305,6 +305,14 @@ struct vdpa_map_file { 
 *				@vdev: vdpa device

 *				@idx: virtqueue index

 *				Returns pointer to structure device or error (NULL)

 * @bind_mm:			Bind the device to a specific address space

 *				so the vDPA framework can use VA when this

 *				callback is implemented. (optional)

 *				@vdev: vdpa device

 *				@mm: address space to bind

 * @unbind_mm:			Unbind the device from the address space

 *				bound using the bind_mm callback. (optional)

 *				@vdev: vdpa device

 * @free:			Free resources that belongs to vDPA (optional)

 *				@vdev: vdpa device

 */
@@ -370,6 +378,8 @@ struct vdpa_config_ops { 
	int (*set_group_asid)(struct vdpa_device *vdev, unsigned int group,

			      unsigned int asid);

	struct device *(*get_vq_dma_dev)(struct vdpa_device *vdev, u16 idx);

	int (*bind_mm)(struct vdpa_device *vdev, struct mm_struct *mm);

	void (*unbind_mm)(struct vdpa_device *vdev);



	/* Free device resources */

	void (*free)(struct vdpa_device *vdev);