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intel-gfx@lists.freedesktop.org; >>> Gupta, Anshuman ; >>> chris.p.wilson@linux.intel.com >>> Subject: Re: [PATCH] drm/i915/rc6: Disable RPG during workload execution >>> >>> >>> >>> On 23-10-2024 21:31, Nilawar, Badal wrote: >>>> >>>> >>>> On 23-10-2024 20:18, Rodrigo Vivi wrote: >>>>> On Wed, Oct 23, 2024 at 11:03:57AM +0530, Nilawar, Badal wrote: >>>>>> >>>>>> >>>>>> On 22-10-2024 22:39, Rodrigo Vivi wrote: >>>>>>> On Tue, Oct 22, 2024 at 03:28:43PM +0200, Andi Shyti wrote: >>>>>>>> Hi Badal, >>>>>>>> >>>>>>>> On Tue, Oct 22, 2024 at 06:52:26PM +0530, Badal Nilawar wrote: >>>>>>>>> Encountering forcewake errors related to render power gating; >>>>>>>> >>>>>>>> Can you please expand your explanation here? >>>>>>> >>>>>>> yeap. More explanation please. All platforms? really? >>>>>> >>>>>> We are seeing Render forcewake timeouts on ADLP, ADLM, ADLN, TWL, >>>>>> DG1, rpl. >>>>> >>>>> Is this a regression? or a new issue? >>>> >>>> This is old issue, first reported year back. >>>> >>>>> >>>>> Is this happening with Xe on these platforms? or i915 only? >>>> >>>> i915 only. This is not reported on Xe kmd. >>>> >>>>> >>>>>> Issue disappears after disabling RPG. Instead of fully disabling RPG >>>>>> I am disabling it during active submissions i.e. during unpark. >>>>>> For MTL and ARL RPG is already disabled permanently. >> IMO this patch should be extended for MTL and ARL as well. >> Don't disable the RPG completely, only disable it during workload submission. >> That should save power on both MTL and ARL platforms, and right thing to do. >> And patch should add the Fixes tag accordingly to the commit which disables the RPG on MTL. >> @Vivi, Rodrigo what is your opinion on above ? it seems both MTL and ADL issues are same signature. >> MTL issue got disappear as RPG is disabled globally but that will burn power. >> If window does not have this issue then it is always difficult to get proper SV support. >> But OS like window may not catch these kind of issues as they don't reload the their graphics driver like >> Linux reload module multiple times during selftest execution. Even chrome-os does not do that. >> Not a real world use case. > > So we should change the tests without impacting the real world use case. > > Let's try to grab the forcewake_all when using these self-tests, except the rc6 one. Sure, I will try forcewake_all on affected tests first. Thanks, Badal > >> Thanks, >> Anshuman. >>>>> >>>>> uhm. Interesting. Why that is disabled on these platforms? >>>> >>>> From commit log its temporary wa to avoid fw timeouts. >>>> >>>> perhaps we should be >>>>> doing the same for all GuC enabled platforms? >>>> >>>> I think so as temporary Wa. >>> >>> Correction, DG1 we are not seeing this. I think we can go with platform check. >>> >>> Regards, >>> Badal >>