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[23.128.96.18]) by mx.google.com with ESMTP id o10si14083326ejn.140.2020.07.07.05.46.35; Tue, 07 Jul 2020 05:46:59 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727876AbgGGMoX (ORCPT + 99 others); Tue, 7 Jul 2020 08:44:23 -0400 Received: from pegase1.c-s.fr ([93.17.236.30]:7722 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726757AbgGGMoX (ORCPT ); Tue, 7 Jul 2020 08:44:23 -0400 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 4B1MZV5B8Wz9v07P; Tue, 7 Jul 2020 14:44:18 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at c-s.fr Received: from pegase1.c-s.fr ([192.168.12.234]) by localhost (pegase1.c-s.fr [192.168.12.234]) (amavisd-new, port 10024) with ESMTP id Y8ITzEyBCl9u; Tue, 7 Jul 2020 14:44:18 +0200 (CEST) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id 4B1MZV3vLrz9v07J; Tue, 7 Jul 2020 14:44:18 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 6D7BC8B7E1; Tue, 7 Jul 2020 14:44:20 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id 8DCpmD-gLKUz; Tue, 7 Jul 2020 14:44:20 +0200 (CEST) Received: from [10.25.210.22] (po15451.idsi0.si.c-s.fr [10.25.210.22]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 438548B7D7; Tue, 7 Jul 2020 14:44:20 +0200 (CEST) Subject: Re: [PATCH v2] powerpc/uaccess: Use flexible addressing with __put_user()/__get_user() To: Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , npiggin@gmail.com, segher@kernel.crashing.org Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org References: <7b916759-1683-b4df-0d4b-b04b3fcd9a02@csgroup.eu> <878sg6862r.fsf@mpe.ellerman.id.au> <875zb98i5a.fsf@mpe.ellerman.id.au> From: Christophe Leroy Message-ID: <8b751738-a9d1-8f55-8f9b-9264c8ac7ed8@csgroup.eu> Date: Tue, 7 Jul 2020 14:44:12 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <875zb98i5a.fsf@mpe.ellerman.id.au> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: fr Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Le 30/06/2020 à 03:19, Michael Ellerman a écrit : > Michael Ellerman writes: >> Christophe Leroy writes: >>> Hi Michael, >>> >>> I see this patch is marked as "defered" in patchwork, but I can't see >>> any related discussion. Is it normal ? >> >> Because it uses the "m<>" constraint which didn't work on GCC 4.6. >> >> https://github.com/linuxppc/issues/issues/297 >> >> So we should be able to pick it up for v5.9 hopefully. > > It seems to break the build with the kernel.org 4.9.4 compiler and > corenet64_smp_defconfig: Most likely a GCC bug ? It seems the problem vanishes with patch https://patchwork.ozlabs.org/project/linuxppc-dev/patch/173de3b659fa3a5f126a0eb170522cccd909950f.1594125164.git.christophe.leroy@csgroup.eu/ Christophe