linux-kernel - Re: [PATCH v2 13/13] arm64: entry: use stackleak_erase_on_task

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Message-ID: <YnKs2E2t+coe2h3w@arm.com>
Date:   Wed, 4 May 2022 17:42:00 +0100
From:   Catalin Marinas <catalin.marinas@....com>
To:     Mark Rutland <mark.rutland@....com>
Cc:     linux-arm-kernel@...ts.infradead.org, akpm@...ux-foundation.org,
        alex.popov@...ux.com, keescook@...omium.org,
        linux-kernel@...r.kernel.org, luto@...nel.org, will@...nel.org
Subject: Re: [PATCH v2 13/13] arm64: entry: use
 stackleak_erase_on_task_stack()

On Wed, Apr 27, 2022 at 06:31:28PM +0100, Mark Rutland wrote:
> On arm64 we always call stackleak_erase() on a task stack, and never
> call it on another stack. We can avoid some redundant work by using
> stackleak_erase_on_task_stack(), telling the stackleak code that it's
> being called on a task stack.
> 
> Signed-off-by: Mark Rutland <mark.rutland@....com>
> Cc: Alexander Popov <alex.popov@...ux.com>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Cc: Andy Lutomirski <luto@...nel.org>
> Cc: Catalin Marinas <catalin.marinas@....com>
> Cc: Kees Cook <keescook@...omium.org>
> Cc: Will Deacon <will@...nel.org>

Acked-by: Catalin Marinas <catalin.marinas@....com>