linux-kernel - Re: [PATCH V3 14/22] LoongArch: Add signal handling support

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Date:   Mon, 20 Sep 2021 10:36:46 +0800
From:   Huacai Chen <chenhuacai@...il.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     "Eric W. Biederman" <ebiederm@...ssion.com>,
        Huacai Chen <chenhuacai@...ngson.cn>,
        Andy Lutomirski <luto@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        David Airlie <airlied@...ux.ie>,
        Jonathan Corbet <corbet@....net>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-arch <linux-arch@...r.kernel.org>,
        "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Xuefeng Li <lixuefeng@...ngson.cn>,
        Yanteng Si <siyanteng@...ngson.cn>,
        Jiaxun Yang <jiaxun.yang@...goat.com>
Subject: Re: [PATCH V3 14/22] LoongArch: Add signal handling support

Hi, Arnd,

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