[PATCH] drm/vgem: create a render node for vgem

[Chris Wilson]

Quoting Emil Velikov (2018-10-29 12:00:17)
> On Fri, 26 Oct 2018 at 15:40, Chris Wilson <chris at chris-wilson.co.uk> wrote:
> >
> > Quoting Daniel Vetter (2018-10-26 14:40:36)
> > > On Fri, Oct 26, 2018 at 01:06:47PM +0100, Emil Velikov wrote:
> > > > From: Emil Velikov <emil.velikov at collabora.com>
> > > >
> > > > VGEM doesn't do anything modeset specific, so in a way exposing a
> > > > primary node is 'wrong'. At the same time, we extensively use if for
> > > > creating dumb buffers, fences, prime fd <> handle imports/exports.
> >
> > What problem are you solving?
> Expose a render node, since only the first instance using the card
> node gets auth.

More accurately, the fence signal/attach do not need DRM_AUTH since they
are operating on resources private to the fd.
-Chris