Subject: Re: [PATCH v2 09/18] mips: use simpler access_ok()

From: Thomas Bogendoerfer <[email-masked]>
Date: Wed, 23 Feb 2022 08:41:27 +0100

On Wed, Feb 16, 2022 at 02:13:23PM +0100, Arnd Bergmann wrote:
> diff --git a/arch/mips/include/asm/uaccess.h b/arch/mips/include/asm/uaccess.h
> index db9a8e002b62..d7c89dc3426c 100644
> --- a/arch/mips/include/asm/uaccess.h
> +++ b/arch/mips/include/asm/uaccess.h
> @@ -19,6 +19,7 @@
>  #ifdef CONFIG_32BIT
>  
>  #define __UA_LIMIT 0x80000000UL
> +#define TASK_SIZE_MAX	__UA_LIMIT

using KSEG0 instead would IMHO be the better choice. This gives the
chance to remove __UA_LIMIT completly after cleaning up ptrace.c

Thomas.

-- 
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