Re: [PATCH v10] vfio: ABI for mdev display dma-buf operation

From: Gerd Hoffmann
Date: Tue Jul 11 2017 - 02:14:30 EST


Hi,

> > +struct vfio_device_query_gfx_plane {
> > + __u32 argsz;
> > + __u32 flags;
> > + struct vfio_device_gfx_plane_info plane_info;
> > + __u32 plane_type;
> > + __s32 fd; /* dma-buf fd */
> > + __u32 plane_id;
> > +};
> > +
>
> It would be better to have comment here about what are expected
> values
> for plane_type and plane_id.

plane_type is DRM_PLANE_TYPE_*.

yes, a comment saying so would be good, same for drm_format which is
DRM_FORMAT_*. While looking at these two: renaming plane_type to
drm_plane_type (for consistency) is probably a good idea too.

plane_id needs a specification.

cheers,
Gerd