From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C3418C433EF for ; Thu, 23 Jun 2022 11:09:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231430AbiFWLJH (ORCPT ); Thu, 23 Jun 2022 07:09:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34328 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231418AbiFWLI7 (ORCPT ); Thu, 23 Jun 2022 07:08:59 -0400 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C9FF84B875; Thu, 23 Jun 2022 04:08:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1655982538; x=1687518538; h=date:from:to:cc:subject:message-id:references: mime-version:content-transfer-encoding:in-reply-to; bh=+2Fzm0IiC8LmVdtB96+NVSttwdYC7NP4ky6hE0ZGRnc=; b=It+GYYJ3XpztgixGazbRF8ap6IfwC2PnT52MIai4+ix5QaXG3E3XITQ8 oIuhvrwGpGUXCEn0T8A2QlSXQBRseSluaYkHLKtT1McKM62RDFN7zOzMQ ircdUUrpwxPRzwR/KhdPv5ESlq7oMf/eGJpp5KuNz5usx0MdvNhjNgL59 xq084c9lc67a0kd2Y+DABkqYb9KexQxlPR8TCKNrtoMnHvk914sZwF2he FFNFzG6up6QMBmJmQ1ELwq6k29pDVMPwIUDtYMkgzMVEF++5DV8BwrGXn sOOywVEkqJFaaZZCTG77GWKtn2Mc2aJHRFKSwp3RO9Fdncogu8Bo99GIk w==; X-IronPort-AV: E=McAfee;i="6400,9594,10386"; a="306149891" X-IronPort-AV: E=Sophos;i="5.92,215,1650956400"; d="scan'208";a="306149891" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Jun 2022 04:08:58 -0700 X-IronPort-AV: E=Sophos;i="5.92,215,1650956400"; d="scan'208";a="592659100" Received: from hazegrou-mobl.ger.corp.intel.com (HELO intel.com) ([10.251.216.121]) by fmsmga007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Jun 2022 04:08:53 -0700 Date: Thu, 23 Jun 2022 13:08:50 +0200 From: Andi Shyti To: Mauro Carvalho Chehab Cc: Chris Wilson , Fei Yang , =?utf-8?Q?Micha=C5=82?= Winiarski , Thomas Hellstrom , Andi Shyti , Daniel Vetter , Daniele Ceraolo Spurio , Dave Airlie , David Airlie , Jani Nikula , John Harrison , Joonas Lahtinen , Lucas De Marchi , Matt Roper , Matthew Auld , Rodrigo Vivi , Tvrtko Ursulin , dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, mauro.chehab@linux.intel.com, stable@vger.kernel.org, Thomas =?iso-8859-15?Q?Hellstr=F6m?= Subject: Re: [PATCH 3/6] drm/i915/gt: Skip TLB invalidations once wedged Message-ID: References: <9d9e663ca8e97becf04e1d4c8cb8a9a1f397a5f1.1655306128.git.mchehab@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <9d9e663ca8e97becf04e1d4c8cb8a9a1f397a5f1.1655306128.git.mchehab@kernel.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Mauro, On Wed, Jun 15, 2022 at 04:27:37PM +0100, Mauro Carvalho Chehab wrote: > From: Chris Wilson > > 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. > > Fixes: 7938d61591d3 ("drm/i915: Flush TLBs before releasing backing store") > > Signed-off-by: Chris Wilson > Cc: Fei Yang > Cc: Andi Shyti > Cc: stable@vger.kernel.org > Acked-by: Thomas Hellström > Signed-off-by: Mauro Carvalho Chehab > --- > > See [PATCH 0/6] at: https://lore.kernel.org/all/cover.1655306128.git.mchehab@kernel.org/ > > drivers/gpu/drm/i915/gt/intel_gt.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c > index 61b7ec5118f9..fb4fd5273ca4 100644 > --- a/drivers/gpu/drm/i915/gt/intel_gt.c > +++ b/drivers/gpu/drm/i915/gt/intel_gt.c > @@ -1226,6 +1226,9 @@ void intel_gt_invalidate_tlbs(struct intel_gt *gt) > if (I915_SELFTEST_ONLY(gt->awake == -ENODEV)) > return; > > + if (intel_gt_is_wedged(gt)) > + return; > + This looks familiar :) Reviewed-by: Andi Shyti Thanks, Andi