From nobody Fri Nov 7 18:46:50 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=gmail.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1548856190915947.7986909569095; Wed, 30 Jan 2019 05:49:50 -0800 (PST) Received: from localhost ([127.0.0.1]:38561 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1goqFR-0005RP-Cb for importer@patchew.org; Wed, 30 Jan 2019 08:49:49 -0500 Received: from eggs.gnu.org ([209.51.188.92]:33177) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1golms-00086o-DX for qemu-devel@nongnu.org; Wed, 30 Jan 2019 04:04:05 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1golml-0000BA-Pq for qemu-devel@nongnu.org; Wed, 30 Jan 2019 04:04:02 -0500 Received: from mail-pf1-x444.google.com ([2607:f8b0:4864:20::444]:43637) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1golml-0000AU-Hz for qemu-devel@nongnu.org; Wed, 30 Jan 2019 04:03:55 -0500 Received: by mail-pf1-x444.google.com with SMTP id w73so11109901pfk.10 for ; Wed, 30 Jan 2019 01:03:55 -0800 (PST) Received: from host.localdomain (96.45.178.72.16clouds.com. [96.45.178.72]) by smtp.gmail.com with ESMTPSA id r80sm2057502pfa.111.2019.01.30.01.03.52 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 30 Jan 2019 01:03:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=vHCEIgYnNxdFaQKiaBdqmRi9VvP1ZmFlqdxdwE9xxQQ=; b=QHhc0X/n+TvX/jfP/Xx23TNWAvaa9nqhMC/2MwnD3YRLRFbOFicV2/9UwgJptmm3k8 5Qj6Vp8/KuTb55AM4vgaEEl1S8pqcaaHG3iMbDu46j2SVn10G2UmRlbGryDw9cqDN4Nj h2O+Ws0XRwl5oXKYEbWTsjM+LuOEAFEmIU+uD2SBwaCgrX5+GLej9kVQX1k/mUTJh9Fp kAlLsd9FXUxGwbUImoEN8IxXTkd+A1oaEHcZLCe8INT40ukKi/8+iDQv6YthK6M5FL3u sUY08Qo/aTH+jPpm0VdnK3pIX7y/gUIIOiZfP/k0rRqWiTXrPfY9y5wkUPsjsPLqdsNx Nf9g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=vHCEIgYnNxdFaQKiaBdqmRi9VvP1ZmFlqdxdwE9xxQQ=; b=hrjcC8rLP8cEKRhuxcZUDhlMUfgzsJKI7Y9rAHjZEBvwixo+xgTb/9wv43OKTGGjAv kkt4oigjl/ame6/3rJKTaPvmoPyHZDLtYWfM1UfKKZ1OfdqhXZYd6MJbAXqbjHuFLxG+ ssS2tF/9tkuWakIdDZAaYZm2ixfMXkvD6h6+2W/UECR+LdSjG4tCNYYNjxL67Hh1qK1U esFPYIebWzNAOpUp4ak2Sfvc03Uo984n7QwL5hXq/WuYaVpWPM/GW1rPesi2rTCryxuW S0S/aUxvxhsEjEXanWDmlYeIhqVJqWCsKszqwg42NgMEoHzgkSAC8nchaCHBTx3PLHlO 6gGQ== X-Gm-Message-State: AJcUukcmM/PpPIVGyobwwONJtiKmS8mJcdEVPURbWwvtstU8A3MGUDzB oqUxvUPi+zMhmoTNfstG1+k= X-Google-Smtp-Source: ALg8bN5C9t4G8bcKrcYLJgLNCsWBo3pjKSG6sRkhjGTi1w0XO6/6QQ6jMzvsy+tK0gm4sJNYjDSM4A== X-Received: by 2002:a63:ac1a:: with SMTP id v26mr27210055pge.293.1548839033881; Wed, 30 Jan 2019 01:03:53 -0800 (PST) From: Catherine Ho To: Richard Henderson , "Emilio G. Cota" Date: Wed, 30 Jan 2019 03:59:54 -0500 Message-Id: <1548838794-23757-1-git-send-email-catherine.hecx@gmail.com> X-Mailer: git-send-email 1.7.1 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::444 X-Mailman-Approved-At: Wed, 30 Jan 2019 08:47:20 -0500 Subject: [Qemu-devel] [PATCH] tcg: add early clober modifier in atomic16_cmpxchg on aarch64 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-devel@nongnu.org, Catherine Ho Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Without this patch, gcc might up the Input/Output registers and cause unpredictable error. Fixes: 1ec182c33379 ("target/arm: Convert to HAVE_CMPXCHG128") Signed-off-by: Catherine Ho --- include/qemu/atomic128.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/qemu/atomic128.h b/include/qemu/atomic128.h index a6af22ff10..ddd0d55d31 100644 --- a/include/qemu/atomic128.h +++ b/include/qemu/atomic128.h @@ -68,7 +68,7 @@ static inline Int128 atomic16_cmpxchg(Int128 *ptr, Int128= cmp, Int128 new) "cbnz %w[tmp], 0b\n" "1:" : [mem] "+m"(*ptr), [tmp] "=3D&r"(tmp), - [oldl] "=3D&r"(oldl), [oldh] "=3Dr"(oldh) + [oldl] "=3D&r"(oldl), [oldh] "=3D&r"(oldh) : [cmpl] "r"(cmpl), [cmph] "r"(cmph), [newl] "r"(newl), [newh] "r"(newh) : "memory", "cc"); --=20 2.17.1