linux-kernel - Re: [PATCH V3 01/22] Documentation: LoongArch: Add basic documentations

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Message-ID: <20210923203705.GA1936@bug>
Date:   Thu, 23 Sep 2021 22:37:05 +0200
From:   Pavel Machek <pavel@....cz>
To:     Huacai Chen <chenhuacai@...ngson.cn>
Cc:     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@...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 V3 01/22] Documentation: LoongArch: Add basic
 documentations

Hi!

> Add some basic documentations for LoongArch. LoongArch is a new RISC

... documentation ...

> +wide in LA64. $r0 is always zero, and other registers has no special feature,

...have no special features...

> +but we actually have an ABI register conversion as below.

convention?

> +``$r21``          ``$x``          Reserved            Unused
> +``$r22``          ``$fp``         Frame pointer       Yes
> +``$r23``-``$r31`` ``$s0``-``$s8`` Static registers    Yes
> +================= =============== =================== ============

Not sure I know the term 'static registers' before.
								Pavel