On Fri, Oct 14, 2022 at 7:14 PM <[email protected]> wrote:
>
> From: Sebastien Boeuf <[email protected]>
>
> Add a new operation to allow a vDPA device to be resumed after it has
> been suspended. Trying to resume a device that wasn't suspended will
> result in a no-op.
>
> This operation is optional. If it's not implemented, the associated
> backend feature bit will not be exposed. And if the feature bit is not
> exposed, invoking this operation will return an error.
>
> Signed-off-by: Sebastien Boeuf <[email protected]>

Acked-by: Jason Wang <[email protected]>

> ---
>  include/linux/vdpa.h | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h
> index 6d0f5e4e82c2..96d308cbf97b 100644
> --- a/include/linux/vdpa.h
> +++ b/include/linux/vdpa.h
> @@ -219,7 +219,10 @@ struct vdpa_map_file {
>   * @reset:                     Reset device
>   *                             @vdev: vdpa device
>   *                             Returns integer: success (0) or error (< 0)
> - * @suspend:                   Suspend or resume the device (optional)
> + * @suspend:                   Suspend the device (optional)
> + *                             @vdev: vdpa device
> + *                             Returns integer: success (0) or error (< 0)
> + * @resume:                    Resume the device (optional)
>   *                             @vdev: vdpa device
>   *                             Returns integer: success (0) or error (< 0)
>   * @get_config_size:           Get the size of the configuration space 
> includes
> @@ -324,6 +327,7 @@ struct vdpa_config_ops {
>         void (*set_status)(struct vdpa_device *vdev, u8 status);
>         int (*reset)(struct vdpa_device *vdev);
>         int (*suspend)(struct vdpa_device *vdev);
> +       int (*resume)(struct vdpa_device *vdev);
>         size_t (*get_config_size)(struct vdpa_device *vdev);
>         void (*get_config)(struct vdpa_device *vdev, unsigned int offset,
>                            void *buf, unsigned int len);
> --
> 2.34.1
>
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