linux-kernel - Re: [PATCH V4 06/22] LoongArch: Add CPU definition headers

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Message-ID: <CAAhV-H6Pt5=DCC39PhJg6jHgpo+GyTGH=KonpncOVFMpD=__Ow@mail.gmail.com>
Date:   Sat, 2 Oct 2021 18:49:59 +0800
From:   Huacai Chen <chenhuacai@...il.com>
To:     Xi Ruoyao <xry111@...gyan1223.wang>
Cc:     Huacai Chen <chenhuacai@...ngson.cn>,
        Arnd Bergmann <arnd@...db.de>,
        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 V4 06/22] LoongArch: Add CPU definition headers

Hi, Ruoyao,

On Thu, Sep 30, 2021 at 11:30 PM Xi Ruoyao <xry111@...gyan1223.wang> wrote:
>
> On Mon, 2021-09-27 at 14:42 +0800, Huacai Chen wrote:
>
> > +#define t0     $r12    /* caller saved */
> > +#define t1     $r13
> > +#define t2     $r14
> > +#define t3     $r15
> > +#define t4     $r16
> > +#define t5     $r17
> > +#define t6     $r18
> > +#define t7     $r19
> > +#define t8     $r20
> > +#define x0     $r21
>
> In the doc it's said x0 will be used to name a 256-bit vector register.
> Maybe it's better to rename this one?
OK, I want to rename it to u0 (U means Unused in userspace).

Huacai
>