" Do we have a bug about this at bugs.freedesktop.org?" I did quick query on fdo.bugzilla and did not find any matching item (afaik) from there (with i915_feature = GPU *hang*|*DMC*) so I would claim that bug is not filed. Stephane can correct my wrong sayings here. BR, Jari -----Original Message----- From: Jani Nikula [mailto:jani.nikula@xxxxxxxxxxxxxxx] Sent: Friday, August 18, 2017 12:08 PM To: Stéphane Marchesin <marcheu@xxxxxxxxxxxx> Cc: Deak, Imre <imre.deak@xxxxxxxxx>; Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>; intel-gfx@xxxxxxxxxxxxxxxxxxxxx; Matt Atwood <matthew.s.atwood@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx>; Saarinen, Jani <jani.saarinen@xxxxxxxxx>; Tahvanainen, Jari <jari.tahvanainen@xxxxxxxxx> Subject: Re: [PATCH] drm/i915: decouple runtime PM enablement from DMC presence On Thu, 17 Aug 2017, Stéphane Marchesin <marcheu@xxxxxxxxxxxx> wrote: > On Mon, Jun 19, 2017 at 11:45 AM, Jani Nikula > <jani.nikula@xxxxxxxxxxxxxxx> wrote: >> >> On Thu, 15 Jun 2017, Imre Deak <imre.deak@xxxxxxxxx> wrote: >> > On Thu, Jun 15, 2017 at 10:20:57AM -0700, Rodrigo Vivi wrote: >> >> I believe it is worth allowing RPM to work without requiring DMC, no?! >> > >> > Not if there is no good reason for not using DMC. It was decided >> > early on that we won't support that configuration since if you care >> > about the power saving provided by partially disabling things you >> > probably also care about the bigger power saving provided by DMC. >> > So that is the current state of the driver, enabling runtime PM >> > without having DMC loaded is not supported. Proper support for that >> > would need to be added after a justification why not to use the firmware. >> >> Agreed. We already have too many configurations to support, and we >> already struggle with our testing coverage as-is. Adding new >> configurations to be tested is not to be taken lightly. >> > > For context, we are seeing GPU hangs at suspend/resume with DMC > enabled (feel free to email me if you want to be added to the internal > bug) which is the reason for this patch. If those GPU hangs can be > fixed instead, then that would be an even better solution, IMO. Is > there someone on your side who could help with these hangs? We need to get the GPU hangs fixed, obviously. Is this reproducible with upstream code? Do we have a bug about this at bugs.freedesktop.org? Jani, Jari? BR, Jani. > > Stéphane > >> >> BR, >> Jani. >> >> -- >> Jani Nikula, Intel Open Source Technology Center -- Jani Nikula, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
