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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 D06B8C10F14 for ; Sat, 12 Oct 2019 07:33:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AEA7221850 for ; Sat, 12 Oct 2019 07:33:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728857AbfJLHd6 (ORCPT ); Sat, 12 Oct 2019 03:33:58 -0400 Received: from szxga04-in.huawei.com ([45.249.212.190]:3701 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727014AbfJLHd6 (ORCPT ); Sat, 12 Oct 2019 03:33:58 -0400 Received: from DGGEMS412-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id AEF6B6C2B173B91EFB2B; Sat, 12 Oct 2019 15:33:54 +0800 (CST) Received: from [127.0.0.1] (10.177.223.23) by DGGEMS412-HUB.china.huawei.com (10.3.19.212) with Microsoft SMTP Server id 14.3.439.0; Sat, 12 Oct 2019 15:33:42 +0800 Subject: Re: [PATCH 3/3] arm64: configs: unset CPU_BIG_ENDIAN To: Will Deacon , Arnd Bergmann CC: Anders Roxell , Catalin Marinas , John Garry , "Linux Kernel Mailing List" , Olof Johansson , Linux ARM References: <20190926193030.5843-1-anders.roxell@linaro.org> <20190926193030.5843-5-anders.roxell@linaro.org> <20191011102747.lpbaur2e4nqyf7sw@willie-the-truck> From: Hanjun Guo Message-ID: <73701e9f-bee1-7ae8-2277-7a3576171cd4@huawei.com> Date: Sat, 12 Oct 2019 15:33:37 +0800 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0 MIME-Version: 1.0 In-Reply-To: <20191011102747.lpbaur2e4nqyf7sw@willie-the-truck> Content-Type: text/plain; charset="utf-8" Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.177.223.23] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2019/10/11 18:27, Will Deacon wrote: [...] > > Does anybody use BIG_ENDIAN? If we're not even building it then maybe we > should get rid of it altogether on arm64. I don't know of any supported > userspace that supports it or any CPUs that are unable to run little-endian > binaries. FWIW, massive telecommunication products (based on ARM64) form Huawei are using BIG_ENDIAN, and will use BIG_ENDIAN in the near future as well. Thanks Hanjun