Re: [PATCH 18/49] drm/i915/bxt: add workaround to avoid PTE corruption

Imre Deak
2015-03-17T13:30:38Z

On ti, 2015-03-17 at 11:36 +0100, Daniel Vetter wrote:
> On Tue, Mar 17, 2015 at 11:39:44AM +0200, Imre Deak wrote:
> > From: Robert Beckett <robert.beckett@intel.com>
> >
> > Set TLBPF in TILECTL. This fixes an issue with BXT HW seeing
> > corrupted pte entries.
>
> Is this for the ggtt or ppgtt ptes?

Robert, did you see how this problem manifests? I just copied the w/a
from your branch and checked it against BSpec, but haven't seen the
actual problem.

Thanks,
Imre