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[2620:137:e000::3:7]) by mx.google.com with ESMTPS id t11-20020a170902e1cb00b001c32d285db8si4624779pla.308.2023.10.30.01.27.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 30 Oct 2023 01:27:21 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:7 as permitted sender) client-ip=2620:137:e000::3:7; Authentication-Results: mx.google.com; dkim=pass header.i=@infradead.org header.s=desiato.20200630 header.b="P/hJC37g"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:7 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by snail.vger.email (Postfix) with ESMTP id 6F3E280C0340; Mon, 30 Oct 2023 01:27:20 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at snail.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232022AbjJ3I1T (ORCPT + 99 others); Mon, 30 Oct 2023 04:27:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47932 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231467AbjJ3I1S (ORCPT ); Mon, 30 Oct 2023 04:27:18 -0400 Received: from desiato.infradead.org (desiato.infradead.org [IPv6:2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 402BFA7 for ; Mon, 30 Oct 2023 01:27:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=SgtYiEbuKxzRlgP1dsKDl/ZpFr7gA4ucYSBfwNHXsEY=; b=P/hJC37gGMfNfOnjw7AS4EbYI+ FbGci2usXQtQc12SiLg2N/OaVi+6osTc3Q3uCv2j0Zd74PCzEGk4rpYXjyYX03hESXIkS1HeKZuOx pv0jR9r22TCFUUURKCFt5NxACGOnsPRDTPVDET3Lh4k1zqnMpG3LQGmSx9Mx5+WhO4q3taBdXYvuR mXE2liGl1PkiCVtHolnVCwn0z5Whr6L4L6PNPdv1PObde+DwcOJ/lxa7xTb5puHsySvUCmSjUGq6o Ub5L9d3fv/vUjqKt6885YOrA8mRJiHKoki4vWDh9r4ZpsNbOv2j2MAfHbEZOSjyWNUOpKCPhw2g+f H+2GZ5qw==; Received: from j130084.upc-j.chello.nl ([24.132.130.84] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1qxNbg-003kMD-38; Mon, 30 Oct 2023 08:26:45 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id 9E5D5300478; Mon, 30 Oct 2023 09:26:44 +0100 (CET) Date: Mon, 30 Oct 2023 09:26:44 +0100 From: Peter Zijlstra To: Paul Gortmaker Cc: Borislav Petkov , Richard Purdie , Thomas Gleixner , x86@kernel.org, linux-kernel@vger.kernel.org Subject: Re: 32 bit qemu regression from v6.5 tip pull [6c480f222128 x86/alternative: Rewrite optimize_nops() some] Message-ID: <20231030082644.GK26550@noisy.programming.kicks-ass.net> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_BLOCKED, SPF_HELO_NONE,SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (snail.vger.email [0.0.0.0]); Mon, 30 Oct 2023 01:27:20 -0700 (PDT) On Sun, Oct 29, 2023 at 02:41:46PM -0400, Paul Gortmaker wrote: > The TL;DR is that the Yocto folks encountered a regression in their > automated QA tests (after a move from v6.4 --> v6.5) where non-KVM > enabled boot tests on 32 bit x86 would (with ~2% frequency) splat with: You're sure you're not running into this here: https://lkml.kernel.org/r/20230706170537.95959-1-richard.henderson@linaro.org ?