[Intel-gfx] [PATCH 7/7] drm/i915: add i915_get_reset_stats_ioctl

[Ville Syrjälä]

On Wed, Jul 03, 2013 at 03:00:39PM -0700, Ben Widawsky wrote:
> On Wed, Jul 03, 2013 at 11:58:31PM +0200, Daniel Vetter wrote:
> > On Wed, Jul 3, 2013 at 11:44 PM, Ben Widawsky <ben at bwidawsk.net> wrote:
> > > Yes. It won't be a requirement for mesa to know, but since I want to
> > > kill aliasing ppgtt as much as possible, I intend to update getparam to
> > > both set 0 to aliasing, and a new one for ppgtt.
> > 
> > We use that one essentially to decide whether the hw uses ppgtt or
> > not, aliasing kinda doesn't matter. So to keep api I guess we need to
> > keep that one enabled. Although only i-g-t really cares I think, but
> > keeping it working would still be nice. Maybe just add a comment to
> > the #define explaining what's going on?
> > -Daniel
> 
> It's a bit off topic for this series, but I don't see any reason to keep
> it working. If it doesn't end up being too much trouble, I can - but in
> actuality on the kernel would be able to use it. Exposing the param as
> true to user space would be a lie.

But won't old Mesa refuse to work if you tell it aliasing ppgtt is not
enabled?

-- 
Ville Syrjälä
Intel OTC