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Mon, 29 Aug 2022 01:26:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229626AbiH2B0b (ORCPT ); Sun, 28 Aug 2022 21:26:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37928 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229488AbiH2B02 (ORCPT ); Sun, 28 Aug 2022 21:26:28 -0400 Received: from szxga08-in.huawei.com (szxga08-in.huawei.com [45.249.212.255]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E27C92A954 for ; Sun, 28 Aug 2022 18:26:26 -0700 (PDT) Received: from dggemv711-chm.china.huawei.com (unknown [172.30.72.57]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4MGCNm50KQz1N7Rq; Mon, 29 Aug 2022 09:22:48 +0800 (CST) Received: from kwepemm600017.china.huawei.com (7.193.23.234) by dggemv711-chm.china.huawei.com (10.1.198.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Mon, 29 Aug 2022 09:26:24 +0800 Received: from [10.174.179.234] (10.174.179.234) by kwepemm600017.china.huawei.com (7.193.23.234) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Mon, 29 Aug 2022 09:26:23 +0800 Message-ID: Date: Mon, 29 Aug 2022 09:26:22 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.8.0 Subject: Re: [PATCH -next v2 1/2] riscv: uaccess: rename __get/put_user_nocheck to __get/put_mem_nocheck To: Arnd Bergmann CC: Paul Walmsley , Palmer Dabbelt , Palmer Dabbelt , Albert Ou , , , , , Guohanjun References: <20220815032025.2685516-1-tongtiangen@huawei.com> <20220815032025.2685516-2-tongtiangen@huawei.com> From: Tong Tiangen In-Reply-To: Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-Originating-IP: [10.174.179.234] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To kwepemm600017.china.huawei.com (7.193.23.234) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 在 2022/8/27 20:49, Arnd Bergmann 写道: > On Sat, Aug 27, 2022 at 12:43 PM Tong Tiangen wrote: >> 在 2022/8/26 17:30, Arnd Bergmann 写道: >> >> I am very interested in the implementation of X86. I need to investigate >> and consider a cross architecture implementation. > > One more point about the cross-architecture work: it generally makes > sense to do the most commonly used architectures first, usually > that would be x86, arm64 and powerpc64, followed by riscv, arm, > s390 and mips. If we can find something that the first architecture > maintainers like, everyone else can follow and you don't have to > rework all of them multiple times before getting to a consensus. > >> However, I understand that the modification of the current patch has >> little to do with the two points mentioned above. We can optimize the >> code step by step. > > You are correct that this has little to do with your patch, my point > was mainly that your patch is moving the code further away from > the other architectures, so it would make it harder to then do the > changes we actually want. > > Arnd I understand what you mean，it's reasonable. Thanks, Tong. > > .