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 8ED7FC4167D for ; Mon, 6 Nov 2023 11:33:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230522AbjKFLd1 (ORCPT ); Mon, 6 Nov 2023 06:33:27 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40404 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229583AbjKFLd0 (ORCPT ); Mon, 6 Nov 2023 06:33:26 -0500 Received: from mail-wm1-x330.google.com (mail-wm1-x330.google.com [IPv6:2a00:1450:4864:20::330]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B82B5AF for ; Mon, 6 Nov 2023 03:33:22 -0800 (PST) Received: by mail-wm1-x330.google.com with SMTP id 5b1f17b1804b1-40907b82ab9so31228355e9.1 for ; Mon, 06 Nov 2023 03:33:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1699270401; x=1699875201; darn=vger.kernel.org; h=to:references:message-id:content-transfer-encoding:cc:date :in-reply-to:from:subject:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=oUKg4uVi4S/dFZ17di9VmvoE4aPOO4c2Mhi3gOlXYIY=; b=TR4/Zt1B5DEeMEiOjL4GlIcfKm6yyDjXtz82Ebik27eIubgyWn2hD8cERZBBpq53KE /0SmUH/b1/vbUtjWtlf1yfaDuo4mfq0QfwOKjvgecSDGWXMrCzFDx8QC5j6s2xVfOzGO iZYIjZlZ/OutJJQSbrg2NxON2QpyAp2fZ9C4ms+LY08uFiYfr0hAtAEatXhiDAbF/6E9 Dg5oGhOjRZ1E6D1o/AAedc06CI191VAcMo8SdxaENBemJkXH1MFCIXbBjWJlyahcYB+h ROXhKicb2v/IIfN2Bfaw9KYJoAosTHiBFCbiaDpUjekZIAwL3tlNFAVp3Gw8fXhXP0Aa feRA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699270401; x=1699875201; h=to:references:message-id:content-transfer-encoding:cc:date :in-reply-to:from:subject:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=oUKg4uVi4S/dFZ17di9VmvoE4aPOO4c2Mhi3gOlXYIY=; b=wDfl99rQbctKxDOvWCiTwjAOfDrVpdBJk2iwzPq2t5KPDsBDbSNMZdsz+VIFe4WuMs yRMUHipMpLkOnV7oJKzdoj1UIAwb4vNkjUjbhYrFlkzoONaiBS7X5ymKHAE6VQ3u4kOT 2NN3UkIttftYa/0Z1+d6GAfg5csq8RagH/3kNrkhR2nXODq0YeKz0JV9rB9EShrOV1KC CDsLJVNr3bAd2juFE/8zwscu8HFwRIz14gNJ0/ssU47vbICVjazvjT+B/vwgpcdOuM38 LByGUwS8gjeBY51MZb3fuNYBj4+Q4ywMtMFjHKwvi73214exmPRI2QRq27B6a1QC309D 7Cpg== X-Gm-Message-State: AOJu0YwzeOONN6qDR5WoykYB3TvNfagVgI/VkrDyJPYurpw9wITuBl9p s6kn/6IyX8bAgDHU+ngsN+U= X-Google-Smtp-Source: AGHT+IE2f8JmuTi8owPpBOZcT3du3yeq7e//eJgkT8TBc4/LbLa7lzX8PxyD4XIK6sHGvxBMtIDwwA== X-Received: by 2002:a7b:c851:0:b0:3fe:d67d:5040 with SMTP id c17-20020a7bc851000000b003fed67d5040mr11252842wml.5.1699270400711; Mon, 06 Nov 2023 03:33:20 -0800 (PST) Received: from smtpclient.apple ([77.137.74.70]) by smtp.gmail.com with ESMTPSA id fc13-20020a05600c524d00b004068de50c64sm12045548wmb.46.2023.11.06.03.33.19 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 06 Nov 2023 03:33:20 -0800 (PST) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3731.700.6\)) Subject: Re: Missing clobber on alternative use on Linux UM 32-bit From: Nadav Amit In-Reply-To: <41cac2e7ad9341259f356e1b3cf5f418@AcuMS.aculab.com> Date: Mon, 6 Nov 2023 13:33:08 +0200 Cc: Anton Ivanov , Richard Weinberger , "linux-um@lists.infradead.org" , Thomas Gleixner , Linux Kernel Mailing List , Peter Zijlstra Content-Transfer-Encoding: 7bit Message-Id: <9D03E2C9-0571-418E-9075-6DD39DBA724F@gmail.com> References: <24BD0906-C6FE-499C-9A4A-00C56E6EE84A@gmail.com> <1616BF59-5C18-46C7-86AB-92604B683652@gmail.com> <41cac2e7ad9341259f356e1b3cf5f418@AcuMS.aculab.com> To: David Laight X-Mailer: Apple Mail (2.3731.700.6) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > On Nov 5, 2023, at 5:47 PM, David Laight wrote: > > gcc always assumes that inline asm changes "cc" - there is no need > to add a 'clobber' for it. Thanks. I was unaware of this behavior.