linux-kernel - Re: [PATCH 1/6] MIPS: Loongson64: Do not write the read only field LPA of CP0

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Message-ID: <a384c467-048d-1296-4a0d-ecbf4cea844d@flygoat.com>
Date:   Fri, 30 Oct 2020 12:00:41 +0800
From:   Jiaxun Yang <jiaxun.yang@...goat.com>
To:     Tiezhu Yang <yangtiezhu@...ngson.cn>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Huacai Chen <chenhc@...ote.com>
Cc:     linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        Xuefeng Li <lixuefeng@...ngson.cn>
Subject: Re: [PATCH 1/6] MIPS: Loongson64: Do not write the read only field
 LPA of CP0_CONFIG3



在 2020/10/29 16:02, Tiezhu Yang 写道:
> The field LPA of CP0_CONFIG3 register is read only for Loongson64, so the
> write operations are meaningless, remove them.
>
> Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
> ---
>   arch/mips/include/asm/mach-loongson64/kernel-entry-init.h | 8 --------
>   arch/mips/loongson64/numa.c                               | 3 ---
>   2 files changed, 11 deletions(-)
Hi Tiezhu,

AFAIK it's not read only on 3A1000.
Have you check with hardware guys?

Thanks.

- Jiaxun