linux-kernel - Re: [PATCH v3 0/3] arm64: Convert to ARCH

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Date:   Wed, 16 Sep 2020 15:13:42 +0200 (CEST)
From:   Miroslav Benes <mbenes@...e.cz>
To:     Mark Brown <broonie@...nel.org>
cc:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Borislav Petkov <bp@...en8.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        "H . Peter Anvin" <hpa@...or.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Ingo Molnar <mingo@...nel.org>,
        Jiri Slaby <jirislaby@...nel.org>, x86@...nel.org,
        linux-arm-kernel@...ts.infradead.org, linux-s390@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 0/3] arm64: Convert to ARCH_STACKWALK

On Mon, 14 Sep 2020, Mark Brown wrote:

> This series updates the arm64 stacktrace code to use the newer and much
> simpler arch_stack_walk() interface, the main benefit being a single
> entry point to the arch code with no need for the arch code to worry
> about skipping frames. Along the way I noticed that the reliable
> parameter to the arch_stack_walk() callback appears to be redundant
> so there's also a patch here removing that from the existing code to
> simplify the interface.
> 
> This is preparatory work for implementing reliable stack trace for
> arm64.
> 
> v3:
>  - Rebase onto v5.9-rc3.
>  - Fix handling of task == current.
>  - Flip the sense of the walk_stackframe() callback.
> v2:
>  - Rebase onto v5.9-rc1.
> 
> Mark Brown (3):
>   stacktrace: Remove reliable argument from arch_stack_walk() callback
>   arm64: stacktrace: Make stack walk callback consistent with generic
>     code
>   arm64: stacktrace: Convert to ARCH_STACKWALK

The patches look good to me.

Reviewed-by: Miroslav Benes <mbenes@...e.cz>

M