Re: [PATCH] drm/i915/selftests: Disable live_pphwsp_runtime on graphics version 12

Hi Andi,

On 2026-07-23 at 14:31:19 +0200, Andi Shyti wrote:
> Hi Krzysztof,
> 
> On Tue, Jul 21, 2026 at 09:16:15AM +0000, Krzysztof Karas wrote:
> > When a context is saved and then restored, the timer delta is
> > calculated using signed 32 bit arithmetic on hardware written
> > value to PPHWSP/LRC image and previously stored value, which use
> > unsigned types. This difference may become negative for version
> > 12, due to hardware quirk on these platforms. This in turn,
> > would cause -EOVERFLOW to be thrown inside live_pphwsp_runtime
> > test.
> 
> do we have any details on this hardware quirk?
Yeah, there was HSD #16010904313 written for Gen 12. Since you
already mentioned this off-list, we could add this annotation to
the commit message and skip re-sending another patch version.

-- 
Best Regards,
Krzysztof