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 X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3FE44C433DB for ; Mon, 8 Feb 2021 23:28:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F26C964E7A for ; Mon, 8 Feb 2021 23:28:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230519AbhBHX2j convert rfc822-to-8bit (ORCPT ); Mon, 8 Feb 2021 18:28:39 -0500 Received: from mail.fireflyinternet.com ([77.68.26.236]:49512 "EHLO fireflyinternet.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S231424AbhBHX2e (ORCPT ); Mon, 8 Feb 2021 18:28:34 -0500 X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.69.177; Received: from localhost (unverified [78.156.69.177]) by fireflyinternet.com (Firefly Internet (M1)) with ESMTP (TLS) id 23816764-1500050 for multiple; Mon, 08 Feb 2021 23:27:38 +0000 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8BIT In-Reply-To: References: Subject: Re: [Intel-gfx] [5.10.y regression] i915 clear-residuals mitigation is causing gfx issues From: Chris Wilson To: Greg Kroah-Hartman , Hans de Goede , intel-gfx , stable@vger.kernel.org Date: Mon, 08 Feb 2021 23:27:38 +0000 Message-ID: <161282685855.9448.10484374241892252440@build.alporthouse.com> User-Agent: alot/0.9 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org Quoting Hans de Goede (2021-02-08 20:38:58) > Hi All, > > We (Fedora) have been receiving reports from multiple users about gfx issues / glitches > stating with 5.10.9. All reporters are users of Ivy Bridge / Haswell iGPUs and all > reporters report that adding i915.mitigations=off to the cmdline fixes things, see: I tried to reproduce this on the w/e on hsw-gt1, to no avail; and piglit did not report any differences with and without mitigations. I have yet to test other platforms. So I don't yet have an alternative. Though note that v5.11 and v5.12 will behave similarly, so we need to urgently find a fix for Linus's tree anyway. -Chris