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From: Andi Shyti <andi.shyti@linux.intel.com>
To: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: "Chris Wilson" <chris.p.wilson@intel.com>,
	"Andi Shyti" <andi.shyti@linux.intel.com>,
	"Daniel Vetter" <daniel@ffwll.ch>,
	"Daniele Ceraolo Spurio" <daniele.ceraolospurio@intel.com>,
	"Dave Airlie" <airlied@redhat.com>,
	"David Airlie" <airlied@linux.ie>,
	"Jani Nikula" <jani.nikula@linux.intel.com>,
	"Joonas Lahtinen" <joonas.lahtinen@linux.intel.com>,
	"Lucas De Marchi" <lucas.demarchi@intel.com>,
	"Matt Roper" <matthew.d.roper@intel.com>,
	"Rodrigo Vivi" <rodrigo.vivi@intel.com>,
	"Tvrtko Ursulin" <tvrtko.ursulin@linux.intel.com>,
	dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org,
	linux-kernel@vger.kernel.org, stable@vger.kernel.org,
	"Fei Yang" <fei.yang@intel.com>,
	"Thomas Hellström" <thomas.hellstrom@linux.intel.com>
Subject: Re: [PATCH v2 05/21] drm/i915/gt: Skip TLB invalidations once wedged
Date: Fri, 22 Jul 2022 14:00:09 +0200	[thread overview]
Message-ID: <YtqRSXXiON8Oed96@alfio.lan> (raw)
In-Reply-To: <f20bd21c94610dae59824b8040e5a9400de6f963.1657800199.git.mchehab@kernel.org>

Hi Mauro,

On Thu, Jul 14, 2022 at 01:06:10PM +0100, Mauro Carvalho Chehab wrote:
> From: Chris Wilson <chris.p.wilson@intel.com>
> 
> Skip all further TLB invalidations once the device is wedged and
> had been reset, as, on such cases, it can no longer process instructions
> on the GPU and the user no longer has access to the TLB's in each engine.
> 
> That helps to reduce the performance regression introduced by TLB
> invalidate logic.
> 
> Cc: stable@vger.kernel.org
> Fixes: 7938d61591d3 ("drm/i915: Flush TLBs before releasing backing store")
> Signed-off-by: Chris Wilson <chris.p.wilson@intel.com>
> Cc: Fei Yang <fei.yang@intel.com>
> Cc: Andi Shyti <andi.shyti@linux.intel.com>
> Acked-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

I haven't read any concern from Tvrtko here, in any case:

Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>

thanks,
Andi

  parent reply	other threads:[~2022-07-22 12:00 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-14 12:06 [PATCH v2 00/21] Fix performance regressions with TLB and add GuC support Mauro Carvalho Chehab
2022-07-14 12:06 ` [PATCH v2 01/21] drm/i915/gt: Ignore TLB invalidations on idle engines Mauro Carvalho Chehab
2022-07-18 13:16   ` Tvrtko Ursulin
2022-07-18 14:53     ` [Intel-gfx] " Mauro Carvalho Chehab
2022-07-18 15:01       ` Tvrtko Ursulin
2022-07-18 15:50       ` David Laight
2022-07-19  7:24         ` Tvrtko Ursulin
2022-07-19  7:45           ` David Laight
2022-07-22 11:56   ` Andi Shyti
2022-07-14 12:06 ` [PATCH v2 02/21] drm/i915/gt: document with_intel_gt_pm_if_awake() Mauro Carvalho Chehab
2022-07-18 13:21   ` Tvrtko Ursulin
2022-07-14 12:06 ` [PATCH v2 03/21] drm/i915/gt: Invalidate TLB of the OA unit at TLB invalidations Mauro Carvalho Chehab
2022-07-18 13:24   ` Tvrtko Ursulin
2022-07-22 11:57   ` Andi Shyti
2022-07-14 12:06 ` [PATCH v2 04/21] drm/i915/gt: Only invalidate TLBs exposed to user manipulation Mauro Carvalho Chehab
2022-07-18 13:39   ` Tvrtko Ursulin
2022-07-18 16:00     ` [Intel-gfx] " Mauro Carvalho Chehab
2022-07-22 11:58   ` Andi Shyti
2022-07-14 12:06 ` [PATCH v2 05/21] drm/i915/gt: Skip TLB invalidations once wedged Mauro Carvalho Chehab
2022-07-18 13:45   ` Tvrtko Ursulin
2022-07-18 16:06     ` [Intel-gfx] " Mauro Carvalho Chehab
2022-07-19  7:19       ` Tvrtko Ursulin
2022-07-22 12:00   ` Andi Shyti [this message]
2022-07-14 12:06 ` [PATCH v2 06/21] drm/i915/gt: Batch TLB invalidations Mauro Carvalho Chehab
2022-07-18 13:52   ` Tvrtko Ursulin
2022-07-20  7:13     ` [Intel-gfx] " Mauro Carvalho Chehab
2022-07-20 10:49       ` Tvrtko Ursulin
2022-07-20 10:54   ` Tvrtko Ursulin
2022-07-27 11:48     ` [Intel-gfx] " Mauro Carvalho Chehab
2022-07-27 12:56       ` Tvrtko Ursulin
2022-07-28  6:32         ` Mauro Carvalho Chehab
2022-07-28  7:26           ` Mauro Carvalho Chehab
2022-07-28 10:11           ` Tvrtko Ursulin
2022-07-14 12:06 ` [PATCH v2 07/21] drm/i915/gt: describe the new tlb parameter at i915_vma_resource Mauro Carvalho Chehab
2022-07-14 12:06 ` [PATCH v2 08/21] drm/i915/gt: Move TLB invalidation to its own file Mauro Carvalho Chehab
2022-07-22 12:07   ` Andi Shyti
2022-07-14 12:06 ` [PATCH v2 09/21] drm/i915/guc: Define CTB based TLB invalidation routines Mauro Carvalho Chehab
2022-07-14 14:06   ` Michal Wajdeczko
2022-08-02  7:48     ` [Intel-gfx] " Mauro Carvalho Chehab
2022-07-14 12:06 ` [PATCH v2 10/21] drm/i915/guc: use kernel-doc for enum intel_guc_tlb_inval_mode Mauro Carvalho Chehab
2022-07-14 12:06 ` [PATCH v2 11/21] drm/i915/guc: document the TLB invalidation struct members Mauro Carvalho Chehab
2022-07-14 12:06 ` [PATCH v2 12/21] drm/i915/guc: Introduce TLB_INVALIDATION_ALL action Mauro Carvalho Chehab
2022-07-14 12:06 ` [PATCH v2 13/21] drm/i915: Invalidate the TLBs on each GT Mauro Carvalho Chehab
2022-07-14 12:06 ` [PATCH v2 14/21] drm/i915: document tlb field at struct drm_i915_gem_object Mauro Carvalho Chehab
2022-07-14 12:06 ` [PATCH v2 15/21] drm/i915: Add platform macro for selective tlb flush Mauro Carvalho Chehab
2022-07-14 12:06 ` [PATCH v2 16/21] drm/i915: Define GuC Based TLB invalidation routines Mauro Carvalho Chehab
2022-07-14 15:20   ` Michal Wajdeczko
2022-07-14 12:06 ` [PATCH v2 17/21] drm/i915: Add generic interface for tlb invalidation for XeHP Mauro Carvalho Chehab
2022-07-14 12:06 ` [PATCH v2 18/21] drm/i915: Use selective tlb invalidations where supported Mauro Carvalho Chehab
2022-07-14 12:06 ` [PATCH v2 19/21] drm/i915/gt: document TLB cache invalidation functions Mauro Carvalho Chehab
2022-07-14 12:06 ` [PATCH v2 20/21] drm/i915/guc: describe enum intel_guc_tlb_invalidation_type Mauro Carvalho Chehab
2022-07-14 12:06 ` [PATCH v2 21/21] drm/i915/guc: document TLB cache invalidation functions Mauro Carvalho Chehab

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