linux-kernel - Re: [PATCH 2/2] MIPS: Loongson64: Define has_cpu_mips64r2

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Date:   Thu, 22 Mar 2018 13:40:58 +0000
From:   James Hogan <jhogan@...nel.org>
To:     Jiaxun Yang <jiaxun.yang@...goat.com>
Cc:     chenhc@...ote.com, linux-mips@...ux-mips.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] MIPS: Loongson64: Define has_cpu_mips64r2_user for
 Loongson-3

On Wed, Mar 21, 2018 at 10:53:04PM +0800, Jiaxun Yang wrote:
> All loongson-3 processors support mips64r2 usermode instructions.
> However 3A1000 3B1000 3B1500 should be treated as mips64r1 in kernel.
> 
> Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
> ---
>  arch/mips/include/asm/mach-loongson64/cpu-feature-overrides.h | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/mips/include/asm/mach-loongson64/cpu-feature-overrides.h b/arch/mips/include/asm/mach-loongson64/cpu-feature-overrides.h
> index 581915ce231c..71c893249374 100644
> --- a/arch/mips/include/asm/mach-loongson64/cpu-feature-overrides.h
> +++ b/arch/mips/include/asm/mach-loongson64/cpu-feature-overrides.h
> @@ -49,6 +49,7 @@
>  #define cpu_has_wsbh		1
>  #define cpu_has_ic_fills_f_dc	1
>  #define cpu_hwrena_impl_bits	0xc0000000
> +#define cpu_has_mips64r2_user  1

What about cpu_has_mips32r2_user?

Cheers
James

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