This new optional callback is used to bind the device to a specific
address space so the vDPA framework can use VA when this callback
is implemented.
Suggested-by: Jason Wang <jasowang@xxxxxxxxxx>
Signed-off-by: Stefano Garzarella <sgarzare@xxxxxxxxxx>
---
include/linux/vdpa.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h
index 6d0f5e4e82c2..34388e21ef3f 100644
--- a/include/linux/vdpa.h
+++ b/include/linux/vdpa.h
@@ -282,6 +282,12 @@ struct vdpa_map_file {
* @iova: iova to be unmapped
* @size: size of the area
* Returns integer: success (0) or error (< 0)
+ * @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
+ * @owner: process that owns the address space
* @free: Free resources that belongs to vDPA (optional)
* @vdev: vdpa device
*/
@@ -341,6 +347,8 @@ struct vdpa_config_ops {
u64 iova, u64 size);
int (*set_group_asid)(struct vdpa_device *vdev, unsigned int group,
unsigned int asid);
+ int (*bind_mm)(struct vdpa_device *vdev, struct mm_struct *mm,
+ struct task_struct *owner);
/* Free device resources */
void (*free)(struct vdpa_device *vdev);
--
2.38.1
