linux-kernel - Re: [PATCH 5/5] virtgpu: mark as a render gpu

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Date:	Thu, 10 Sep 2015 16:52:45 +0200
From:	Gerd Hoffmann <kraxel@...hat.com>
To:	Emil Velikov <emil.l.velikov@...il.com>
Cc:	ML dri-devel <dri-devel@...ts.freedesktop.org>,
	Dave Airlie <airlied@...hat.com>,
	open list <linux-kernel@...r.kernel.org>,
	"open list:VIRTIO GPU DRIVER" 
	<virtualization@...ts.linux-foundation.org>
Subject: Re: [PATCH 5/5] virtgpu: mark as a render gpu

  Hi,

> > Dave?  Looking at the ioctls they are all fine for render nodes, there
> > isn't anything modesetting related in the device-specific ioctls.
> >
> > Correct?
> >
> Unless I've overdone the coffee this time - modesetting is done via
> the card# node, while render via either card# or renderD#.

Exactly, thats why anything modesetting-related must be disabled for
renderD#.  Looking at the virtio-gpu device-specific ioctls I don't
think there is anything doing modesetting (which we would have to leave
out), so we can apply DRM_RENDER_ALLOW everythere I think.  Or maybe
there is a global switch to flip DRM_RENDER_ALLOW for the whole list ...

cheers,
  Gerd


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