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=-2.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 60646C433EF for ; Mon, 20 Sep 2021 02:37:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4075E60F12 for ; Mon, 20 Sep 2021 02:37:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230488AbhITCiZ (ORCPT ); Sun, 19 Sep 2021 22:38:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60840 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229961AbhITCiZ (ORCPT ); Sun, 19 Sep 2021 22:38:25 -0400 Received: from mail-vs1-xe2a.google.com (mail-vs1-xe2a.google.com [IPv6:2607:f8b0:4864:20::e2a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 55166C061574; Sun, 19 Sep 2021 19:36:59 -0700 (PDT) Received: by mail-vs1-xe2a.google.com with SMTP id u8so15156889vsp.1; Sun, 19 Sep 2021 19:36:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=KW0eAJoHEHsfgRpsIaeEBIptj7sPIMm58XFi25mu5Ww=; b=NImqRjRNDePB0tFmRl7BwxTTNnsE5u7K0cfoAMu1FrPmn/G/eb8aOA5z+twRIfC5fH 3lZRWzf3zHTbP7AU5kZrQpGx3gy7bGCYHx513Y+qu3iUlG51WPb0iYiUMkodwwh7HcC1 nCyDHq8GfPhL8aQqHZMD8lesYK3ZJvOd24wpwLvqTI3ZXtoOluZb3Y9AHMJCCaQlwlRO Bcrqn+Q/WhuCqBcvX0GJPITrR2xDFJmiGt7ILxafLH7yfImANuTmJAgIw8lNElijSJR/ dLmF28F/YX7+Tc19Vrq5al/3ZxewL8F9TiMrZwAMsWqKhZ9vSyo5RE2GrCXcF3OCg0Zc 6dnw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=KW0eAJoHEHsfgRpsIaeEBIptj7sPIMm58XFi25mu5Ww=; b=kn+UDBEsWM3CVVx12L4+AFNvOqpZkvS7ULMSItrXNzruHSaEa6BSQ3FMuScGufMgG8 yCK2cJ8i5KDbIpQh/530GDoot/8LCCQQ7f0gyFpkpg3mqO/Dif9YsqqTl9Bf+tqe6b+Q uF7gQsJ1EpKFFt2fqClgkM8YYhkI/vnx37YsKfkf7ITdu4bY/1y0GOFakA6bwpMT2SNB Yf3A1EI9Sef6AKc6bMijOO9zRzxxse06CucVUYzJHbsRTFxxXPd6q0Wp9oTad+DzvoOu O+CXWM3gKlRWX42VFJgypE4sJ5qGeVsd8kdcU6RSlgA5ALkIsGCHatEcwhG6dSspBCrU 7ZEQ== X-Gm-Message-State: AOAM532DljgGYyT0xiqrf+QSCA8yYnQowhGrzNZcdNYtm9g/EAXBAJCK 0FzlbE++uxI4TuiZrHa+XCcFmyGB88MX6Cp+38eH0MnI X-Google-Smtp-Source: ABdhPJwi/ObtWsm3iFluXwDHMGTKcvOZILhFCp0kPgBogbTHcslWK0e4+F/IjPuwahZtF3vW3XV7G1d/Pa7fHmfb2FM= X-Received: by 2002:a67:441:: with SMTP id 62mr14681934vse.54.1632105418321; Sun, 19 Sep 2021 19:36:58 -0700 (PDT) MIME-Version: 1.0 References: <20210917035736.3934017-1-chenhuacai@loongson.cn> <20210917035736.3934017-15-chenhuacai@loongson.cn> <87tuii52o2.fsf@disp2133> In-Reply-To: From: Huacai Chen Date: Mon, 20 Sep 2021 10:36:46 +0800 Message-ID: Subject: Re: [PATCH V3 14/22] LoongArch: Add signal handling support To: Arnd Bergmann Cc: "Eric W. Biederman" , Huacai Chen , Andy Lutomirski , Thomas Gleixner , Peter Zijlstra , Andrew Morton , David Airlie , Jonathan Corbet , Linus Torvalds , linux-arch , "open list:DOCUMENTATION" , LKML , Xuefeng Li , Yanteng Si , Jiaxun Yang Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-arch@vger.kernel.org Hi, Arnd, On Sun, Sep 19, 2021 at 5:59 PM Arnd Bergmann wrote: > > On Sat, Sep 18, 2021 at 9:12 AM Huacai Chen wrote: > > On Sat, Sep 18, 2021 at 5:10 AM Eric W. Biederman wrote: > > > For example does LoongArch have a version without built in floating > > > point support? > > > > Some of these structures seems need rethinking, But we really have > > LoongArch-based MCUs now (no FP, no SMP, and even no MMU). > > NOMMU Linux is kind-of on the way out as interest is fading, so I hope you > don't plan on supporting this in the future. > > Do you expect to see future products with MMU but no FP or no SMP? OK, we will not care no-MMU hardware in Linux, but no-FP and no-SMP hardware will be supported. Huacai > > Arnd