[Intel-gfx] [PATCH] drm/i915/gt: Temporarily force MTL into uncached mode

[Matt Roper]

On Tue, Oct 10, 2023 at 05:11:54PM +0200, Andi Shyti wrote:
> Hi Matt,
> 
> On Tue, Oct 10, 2023 at 06:58:27AM -0700, Matt Roper wrote:
> > On Mon, Oct 09, 2023 at 04:38:56PM -0700, Jonathan Cavitt wrote:
> > > FIXME: CAT errors are cropping up on MTL.  This removes them,
> > > but the real root cause must still be diagnosed.
> > 
> > Do you have a link to specific IGT test(s) that illustrate the CAT
> > errors so that we can ensure that they now appear fixed in CI?
> 
> this one:
> 
> https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_124599v1/bat-mtlp-8/igt@i915_selftest@live@hugepages.html
> 
> Andi

Wait, now I'm confused.  That's a failure caused by a different patch
series (one that we won't be moving forward with).  The live at hugepages
test is always passing on drm-tip today:
https://intel-gfx-ci.01.org/tree/drm-tip/igt@i915_selftest@live@hugepages.html

Is there a test that's giving CAT errors on drm-tip itself (even
sporadically) that we can monitor to see the impact of Jonathan's patch
here?


Matt

-- 
Matt Roper
Graphics Software Engineer
Linux GPU Platform Enablement
Intel Corporation