Hello, +Ricardo related to testing done by GFX QA. Br, Jari -----Original Message----- From: Joonas Lahtinen [mailto:joonas.lahtinen@xxxxxxxxxxxxxxx] Sent: Monday, September 18, 2017 4:41 PM To: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>; intel-gfx@xxxxxxxxxxxxxxxxxxxxx Cc: Ursulin, Tvrtko <tvrtko.ursulin@xxxxxxxxx>; Deak, Imre <imre.deak@xxxxxxxxx>; Tahvanainen, Jari <jari.tahvanainen@xxxxxxxxx>; Kaajas, Samu <samu.kaajas@xxxxxxxxx> Subject: Re: [PATCH] drm/i915: Disable DMC powersaving during GT operations + Jari & Samu On Tue, 2017-09-12 at 13:48 +0100, Chris Wilson wrote: > Quoting Chris Wilson (2017-09-12 13:37:32) > > diff --git a/drivers/gpu/drm/i915/i915_gem_request.c > > b/drivers/gpu/drm/i915/i915_gem_request.c > > index 813a3b546d6e..3c8ebdb5b0b4 100644 > > --- a/drivers/gpu/drm/i915/i915_gem_request.c > > +++ b/drivers/gpu/drm/i915/i915_gem_request.c > > @@ -254,6 +254,9 @@ static void mark_busy(struct drm_i915_private *i915) > > intel_runtime_pm_get_noresume(i915); > > i915->gt.awake = true; > > > > /* > * The DMC doesn't behave well when it is active (i.e the system is > * idle). It continually tries to toggle DC_STATE_EN causing a > * severe slow down of the rest of the system (severe enough to > trigger > * watchdogs and reboot the machine under CI testing). > * > * Known affected firmware: > * - skl_dmc_ver1_26.bin > * - bxt_dmc_ver1_07.bin > */ Has this patch been tested more widely, does it have negative performance effects? Regards, Joonas > > + if (i915->csr.dmc_payload) > > + intel_display_power_get(i915, POWER_DOMAIN_MODESET); > > + -- Joonas Lahtinen Open Source Technology Center Intel Corporation _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
