From: jiangdongxu1 jiangdongxu1@huawei.com
mainline inclusion from v6.4-rc1 commit 9067de4725a299bc1baf11de9f5040fdd0bd05c3 category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I86ITO Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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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 Signed-off-by: jiangdongxu1 jiangdongxu1@huawei.com --- include/linux/vdpa.h | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h index ffb1fd135182..0f6d8bef66c2 100644 --- a/include/linux/vdpa.h +++ b/include/linux/vdpa.h @@ -282,6 +282,14 @@ 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 + * @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 */ @@ -342,6 +350,8 @@ 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); + void (*unbind_mm)(struct vdpa_device *vdev);
/* Free device resources */ void (*free)(struct vdpa_device *vdev);