[Intel-gfx] [PATCH] drm/i915: Fix gem_gtt_cpu_tlb

[Chris Wilson]

On Fri, 17 Aug 2012 10:13:34 +0200, Daniel Vetter <daniel at ffwll.ch> wrote:
> On Thu, Aug 16, 2012 at 11:12:57PM -0700, Ben Widawsky wrote:
> > Revert "agp/intel, drm/i915: Use a write-combining map for updating PTEs"
> > 
> > This reverts commit 15a80851c8166c05c6f600fede1719b29eb70737.
> > 
> > I haven't spent any time looking at the patch but bisection and revert
> > testing proves this fixes the issues. Begone ye ext4 errors!
> > 
> > Signed-off-by: Ben Widawsky <ben at bwidawsk.net>
> 
> Patched removed from dinq, thanks a lot to you (and Paulo) for digging
> this out.

The regression appears to have been introduced with SNB. Maybe we should
bug the hw engineers about this?
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre