linux-kernel - Re: [PATCH] MIPS: Loongson64: Drop 32-bit support for Loongson 2E/2F devices

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Message-ID: <20180102084759.GL5027@jhogan-linux.mipstec.com>
Date:   Tue, 2 Jan 2018 08:48:00 +0000
From:   James Hogan <james.hogan@...s.com>
To:     Jiaxun Yang <jiaxun.yang@...goat.com>
CC:     Ralf Baechle <ralf@...ux-mips.org>,
        Huacai CHen <chenhc@...ote.com>, <linux-mips@...ux-mips.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] MIPS: Loongson64: Drop 32-bit support for Loongson 2E/2F
 devices

On Tue, Dec 26, 2017 at 12:21:38PM +0800, Jiaxun Yang wrote:
> Make loongson64 a pure 64-bit mach.

Please expand to provide some rationale behind the change. Was 32-bit
support broken at runtime, or broken at build time, or are we simply no
longer interested in supporting it?

Cheers
James

> 
> Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
> ---
>  arch/mips/loongson64/Kconfig | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/arch/mips/loongson64/Kconfig b/arch/mips/loongson64/Kconfig
> index 0d249fc3cfe9..a7d9a9241ac4 100644
> --- a/arch/mips/loongson64/Kconfig
> +++ b/arch/mips/loongson64/Kconfig
> @@ -17,7 +17,6 @@ config LEMOTE_FULOONG2E
>  	select I8259
>  	select ISA
>  	select IRQ_MIPS_CPU
> -	select SYS_SUPPORTS_32BIT_KERNEL
>  	select SYS_SUPPORTS_64BIT_KERNEL
>  	select SYS_SUPPORTS_LITTLE_ENDIAN
>  	select SYS_SUPPORTS_HIGHMEM
> @@ -49,7 +48,6 @@ config LEMOTE_MACH2F
>  	select ISA
>  	select SYS_HAS_CPU_LOONGSON2F
>  	select SYS_HAS_EARLY_PRINTK
> -	select SYS_SUPPORTS_32BIT_KERNEL
>  	select SYS_SUPPORTS_64BIT_KERNEL
>  	select SYS_SUPPORTS_HIGHMEM
>  	select SYS_SUPPORTS_LITTLE_ENDIAN
> -- 
> 2.15.1
> 

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