linux-kernel - Re: [PATCH] getauxval.3: MIPS, AT_BASE

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Message-ID: <4d4b7b0f-7e55-c400-3b5f-5c9a04bac40f@cogentembedded.com>
Date:   Sun, 22 Mar 2020 11:33:49 +0300
From:   Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:     YunQiang Su <syq@...ian.org>, mtk.manpages@...il.com
Cc:     linux-man@...r.kernel.org, linux-mips@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] getauxval.3: MIPS, AT_BASE_PLATFORM passes ISA level

Hello!

On 22.03.2020 8:39, YunQiang Su wrote:

> Since Linux 5.7, on MIPS, we use AT_BASE_PLATFORM to pass ISA level.
> The values may be:
>    mips2, mips3, mips4, mips5,
>    mips32, mips32r2, mips32r6,
>    mips64, mips64r2, mips64r6.
> 
> This behaivor is different with PowerPC.

    Behavior.

> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=e585b768da111f2c2d413de6214e83bbdfee8f22
> Signed-off-by: YunQiang Su <syq@...ian.org>
> ---
>   man3/getauxval.3 | 7 ++++---
>   1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/man3/getauxval.3 b/man3/getauxval.3
> index 456371c6a..518faf5d3 100644
> --- a/man3/getauxval.3
> +++ b/man3/getauxval.3
> @@ -60,9 +60,10 @@ values are present on all architectures.
>   The base address of the program interpreter (usually, the dynamic linker).
>   .TP
>   .BR AT_BASE_PLATFORM
> -A pointer to a string identifying the real platform; may differ from
> -.BR AT_PLATFORM
> -(PowerPC only).
> +A pointer to a string (PowerPC and MIPS only).
> +On PowerPC, this identifys the real platform; may differ from

    Identifies.

> +.BR AT_PLATFORM "."
> +On MIPS, this identifys the ISA level (Since 5.7).

    Same here.

[...]

MBR, Sergei