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vdpa: add bind_mm/unbind_mm callbacks

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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: Jason Wang <jasowang@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Message-Id: <20230404131326.44403-2-sgarzare@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Stefano Garzarella 2023-04-04 15:13:18 +02:00 committed by Michael S. Tsirkin
parent 905233af51
commit c618c84d4c
1 changed files with 10 additions and 0 deletions
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10
include/linux/vdpa.h
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@ -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);