[RFC PATCH 1/6] vdpa: add bind_mm callback
From: Stefano Garzarella <sgarzare@redhat.com>
Date: 2022-12-14 16:32:52
Also in:
kvm, lkml, virtualization
Subsystem:
the rest, virtio core · Maintainers:
Linus Torvalds, "Michael S. Tsirkin", Jason Wang
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 <redacted> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> --- 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