linux-kernel - Re: [PATCH 2/2 v3] MIPS: Ingenic: Disable abandoned HPTLB function.

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Message-ID: <5dd85bd9.1c69fb81.55be.599c@mx.google.com>
Date:   Fri, 22 Nov 2019 14:06:17 -0800
From:   Paul Burton <paulburton@...nel.org>
To:     Zhou Yanjie <zhouyanjie@...o.com>
CC:     linux-mips@...r.kernel.org
Subject: Re: [PATCH 2/2 v3] MIPS: Ingenic: Disable abandoned HPTLB function.

Hello,

Zhou Yanjie wrote:
> JZ4760/JZ4770/JZ4775/X1000/X1500 has an abandoned huge page tlb,
> this mode is not compatible with the MIPS standard, it will cause
> tlbmiss and into an infinite loop (line 21 in the tlb-funcs.S)
> when starting the init process. write 0xa9000000 to cp0 register 5
> sel 4 to disable this function to prevent getting stuck. Confirmed
> by Ingenic, this operation will not adversely affect processors
> without HPTLB function.

Applied to mips-next.

> commit b02efeb05699
> https://git.kernel.org/mips/c/b02efeb05699
> 
> Signed-off-by: Zhou Yanjie <zhouyanjie@...o.com>
> Acked-by: Paul Cercueil <paul@...pouillou.net>
> Signed-off-by: Paul Burton <paulburton@...nel.org>

Thanks,
    Paul

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