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=-20.6 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=unavailable 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 2E3B0C433E1 for ; Mon, 20 Jul 2020 20:50:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 04F6B20672 for ; Mon, 20 Jul 2020 20:50:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="Gs4QCxzA" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729486AbgGTUuS (ORCPT ); Mon, 20 Jul 2020 16:50:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58624 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728911AbgGTUuO (ORCPT ); Mon, 20 Jul 2020 16:50:14 -0400 Received: from mail-qv1-xf4a.google.com (mail-qv1-xf4a.google.com [IPv6:2607:f8b0:4864:20::f4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B7D43C0619D2 for ; Mon, 20 Jul 2020 13:50:14 -0700 (PDT) Received: by mail-qv1-xf4a.google.com with SMTP id dl10so1946115qvb.20 for ; Mon, 20 Jul 2020 13:50:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=N5jd+pSQ0JxE9XvTtwZnQjvUf1dPBeQ5IDjxob8l6P0=; b=Gs4QCxzAMdw5XWTuxVJdzIGkIbn4dOs7Gz4o7ij6qiPF8ER3jysihQyoF1b/vFzRts ffGrHYjBkDaNmgb5P8bJRBzqvoSFsBDm/F3vmQjm7aoBDy6UfdjdzrEVRQYCecrzwcJm 0lG/zuG02JAnlHqVUKQC2AaCWF8NglY9Bha9cIP4IbFktuEFtgBtf3slFupsiNR8sZ38 GE4O6ffwyB/FfBZOVz/ysNXecEECcj+A3Tkio2kiJ5SKRbtDimRd517xVt1EUfdBEPsc HtOOh7XBBNmxRV1S6x9Xb4IetySmOfo2GTRGk8R+3ohYlqwrcOq9Z0ILMPFuHw4MhKcg PNUw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=N5jd+pSQ0JxE9XvTtwZnQjvUf1dPBeQ5IDjxob8l6P0=; b=psQFn9oOCZ4rfxKSvrSWc4UlGSnHWDNEehlHvXV8Pfg4CQfnuJpQmjDvnzs2EoeGxE VXiQYIGb94TbWQd7szLsFbDcPGqteTIsJNYBFtz+VGu4oCD9C9qaQjzI8Oc+obMqTEW2 RvykjDPCf48JR1i5/FWaHrgym2fEpoYa+TGcrXcOy5yf/0Zf6ZpQJ76VbaOvAXIpz2+l 6qC09MrF6ym40maDaEvuzAdWHw2ahO5fAI5rldkX/uQGwwo2GSVXfPnt+eKCirblGy7S r4MSGwLBB+iXzlCurBY25fo12gLgmnb5dfhKtLDzo19cy3wmEmHhKsDDo+feNK5iDeqb MzKw== X-Gm-Message-State: AOAM533n3Lzg3PiqgAV60AptyTHEXDaPO5Gh67oqJ8Cm3dh7U9IH9dh3 KbLZ6N1s9oVSvfaJKxCY3NuWCVaUsgBAolKdJ2A= X-Google-Smtp-Source: ABdhPJyTOuZy7eEPyqwdPdBUxV48dSXqlH0y50EAcB6MaSgdYtc1AOTV85M4t4oH/aql0Zfp/dp7gG2hG8XBLr/+ZUY= X-Received: by 2002:ad4:4903:: with SMTP id bh3mr23645134qvb.17.1595278213791; Mon, 20 Jul 2020 13:50:13 -0700 (PDT) Date: Mon, 20 Jul 2020 13:49:19 -0700 In-Reply-To: <20200720204925.3654302-1-ndesaulniers@google.com> Message-Id: <20200720204925.3654302-6-ndesaulniers@google.com> Mime-Version: 1.0 References: <20200720204925.3654302-1-ndesaulniers@google.com> X-Mailer: git-send-email 2.28.0.rc0.105.gf9edc3c819-goog Subject: [PATCH v3 05/11] x86/percpu: Remove "e" constraint from XADD From: Nick Desaulniers To: Thomas Gleixner , Ingo Molnar , Borislav Petkov Cc: Dennis Zhou , Tejun Heo , Christoph Lameter , x86@kernel.org, "H. Peter Anvin" , Al Viro , Andrew Morton , Peter Zijlstra , linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com, Brian Gerst , Nick Desaulniers , Linus Torvalds Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Brian Gerst The "e" constraint represents a constant, but the XADD instruction doesn't accept immediate operands. Tested-by: Nick Desaulniers Reviewed-by: Nick Desaulniers Acked-by: Linus Torvalds Acked-by: Peter Zijlstra (Intel) Signed-off-by: Brian Gerst Signed-off-by: Nick Desaulniers --- arch/x86/include/asm/percpu.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h index 2a24f3c795eb..9bb5440d98d3 100644 --- a/arch/x86/include/asm/percpu.h +++ b/arch/x86/include/asm/percpu.h @@ -220,7 +220,7 @@ do { \ break; \ case 8: \ asm qual ("xaddq %0, "__percpu_arg(1) \ - : "+re" (paro_ret__), "+m" (var) \ + : "+r" (paro_ret__), "+m" (var) \ : : "memory"); \ break; \ default: __bad_percpu_size(); \ -- 2.28.0.rc0.105.gf9edc3c819-goog