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

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Message-ID: <91d12c483421cc7bd69d8ee7f28243d65877a7af.camel@mengyan1223.wang>
Date:   Thu, 30 Sep 2021 23:30:24 +0800
From:   Xi Ruoyao <xry111@...gyan1223.wang>
To:     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>
Cc:     linux-arch@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, Xuefeng Li <lixuefeng@...ngson.cn>,
        Yanteng Si <siyanteng@...ngson.cn>,
        Huacai Chen <chenhuacai@...il.com>,
        Jiaxun Yang <jiaxun.yang@...goat.com>
Subject: Re: [PATCH V4 06/22] LoongArch: Add CPU definition headers

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?