| Message ID | 20230321154228.182769-2-sgarzare@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | vdpa_sim: add support for user VA | expand |
On Tue, Mar 21, 2023 at 11:42 PM Stefano Garzarella <sgarzare@redhat.com> wrote: > > 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> > Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Thanks > --- > > Notes: > v2: > - removed `struct task_struct *owner` param (unused for now, maybe > useful to support cgroups) [Jason] > - add unbind_mm callback [Jason] > > include/linux/vdpa.h | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h > index 43f59ef10cc9..369c21394284 100644 > --- a/include/linux/vdpa.h > +++ b/include/linux/vdpa.h > @@ -290,6 +290,14 @@ 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 > */ > @@ -351,6 +359,8 @@ 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); > -- > 2.39.2 >
diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h index 43f59ef10cc9..369c21394284 100644 --- a/include/linux/vdpa.h +++ b/include/linux/vdpa.h @@ -290,6 +290,14 @@ 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 */ @@ -351,6 +359,8 @@ 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);
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> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> --- Notes: v2: - removed `struct task_struct *owner` param (unused for now, maybe useful to support cgroups) [Jason] - add unbind_mm callback [Jason] include/linux/vdpa.h | 10 ++++++++++ 1 file changed, 10 insertions(+)