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From:   Huacai Chen <chenhuacai@gmail.com>
Date:   Mon, 20 Sep 2021 10:36:46 +0800
Message-ID: <CAAhV-H7A=C3Tujt2YNv1np9pEP_Hxc-chGnOdmDCzx5tUt7F5g@mail.gmail.com>
Subject: Re: [PATCH V3 14/22] LoongArch: Add signal handling support
To:     Arnd Bergmann <arnd@arndb.de>
Cc:     "Eric W. Biederman" <ebiederm@xmission.com>,
        Huacai Chen <chenhuacai@loongson.cn>,
        Andy Lutomirski <luto@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Peter Zijlstra <peterz@infradead.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        David Airlie <airlied@linux.ie>,
        Jonathan Corbet <corbet@lwn.net>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        linux-arch <linux-arch@vger.kernel.org>,
        "open list:DOCUMENTATION" <linux-doc@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Xuefeng Li <lixuefeng@loongson.cn>,
        Yanteng Si <siyanteng@loongson.cn>,
        Jiaxun Yang <jiaxun.yang@flygoat.com>
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Hi, Arnd,

On Sun, Sep 19, 2021 at 5:59 PM Arnd Bergmann <arnd@arndb.de> wrote:
>
> On Sat, Sep 18, 2021 at 9:12 AM Huacai Chen <chenhuacai@gmail.com> wrote:
> > On Sat, Sep 18, 2021 at 5:10 AM Eric W. Biederman <ebiederm@xmission.com> 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