Re: [PATCH v4 1/4] vdpa: Add stop operation

Eugenio Perez Martin
2022-05-26T15:32:52Z

On Thu, May 26, 2022 at 4:23 PM Stefano Garzarella <sgarzare@redhat.com> wrote:
>
> On Thu, May 26, 2022 at 02:43:35PM +0200, Eugenio Pérez wrote:
> >This operation is optional: It it's not implemented, backend feature bit
> >will not be exposed.
> >
> >Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
> >---
> > include/linux/vdpa.h | 6 ++++++
> > 1 file changed, 6 insertions(+)
> >
> >diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h
> >index 15af802d41c4..ddfebc4e1e01 100644
> >--- a/include/linux/vdpa.h
> >+++ b/include/linux/vdpa.h
> >@@ -215,6 +215,11 @@ struct vdpa_map_file {
> > * @reset: Reset device
> > * @vdev: vdpa device
> > * Returns integer: success (0) or error (< 0)
> >+ * @stop: Stop or resume the device (optional, but it must
> >+ * be implemented if require device stop)
> >+ * @vdev: vdpa device
> >+ * @stop: stop (true), not stop (false)
>
> Sorry for just seeing this now, but if you have to send a v5, maybe we
> could use "resume" here instead of "not stop".
>

I agree it fits way better, I'll queue for the next :). Thanks!

> Thanks,
> Stefano
>
> >+ * Returns integer: success (0) or error (< 0)
> > * @get_config_size: Get the size of the configuration space includes
> > * fields that are conditional on feature bits.
> > * @vdev: vdpa device
> >@@ -316,6 +321,7 @@ struct vdpa_config_ops {
> > u8 (*get_status)(struct vdpa_device *vdev);
> > void (*set_status)(struct vdpa_device *vdev, u8 status);
> > int (*reset)(struct vdpa_device *vdev);
> >+ int (*stop)(struct vdpa_device *vdev, bool stop);
> > size_t (*get_config_size)(struct vdpa_device *vdev);
> > void (*get_config)(struct vdpa_device *vdev, unsigned int offset,
> > void *buf, unsigned int len);
> >--
> >2.31.1
> >
>