linux-hardening - Re: [PATCH] mips: Implement "current_stack

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Date:   Tue, 1 Mar 2022 17:30:20 +0100
From:   Thomas Bogendoerfer <tsbogend@...ha.franken.de>
To:     Kees Cook <keescook@...omium.org>
Cc:     Marc Zyngier <maz@...nel.org>, Guenter Roeck <linux@...ck-us.net>,
        Mark Rutland <mark.rutland@....com>,
        Yanteng Si <siyanteng01@...il.com>, linux-mips@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH] mips: Implement "current_stack_pointer"

On Wed, Feb 23, 2022 at 10:04:32PM -0800, Kees Cook wrote:
> To follow the existing per-arch conventions replace open-coded uses
> of asm "sp" as "current_stack_pointer". This will let it be used in
> non-arch places (like HARDENED_USERCOPY).
> 
> Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
> Cc: Marc Zyngier <maz@...nel.org>
> Cc: Guenter Roeck <linux@...ck-us.net>
> Cc: Mark Rutland <mark.rutland@....com>
> Cc: Yanteng Si <siyanteng01@...il.com>
> Cc: linux-mips@...r.kernel.org
> Signed-off-by: Kees Cook <keescook@...omium.org>
> ---
>  arch/mips/Kconfig                   | 1 +
>  arch/mips/include/asm/thread_info.h | 2 ++
>  arch/mips/kernel/irq.c              | 3 +--
>  arch/mips/lib/uncached.c            | 4 +---
>  4 files changed, 5 insertions(+), 5 deletions(-)

applied to mips-next.

Thomas.

-- 
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea.                                                [ RFC1925, 2.3 ]