linux-kernel - Re: [PATCH v7 00/11] arm64: Branch Target Identification support

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Message-ID: <202002261343.3B2ECE90@keescook>
Date:   Wed, 26 Feb 2020 13:44:59 -0800
From:   Kees Cook <keescook@...omium.org>
To:     Mark Brown <broonie@...nel.org>
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Paul Elliott <paul.elliott@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Yu-cheng Yu <yu-cheng.yu@...el.com>,
        Amit Kachhap <amit.kachhap@....com>,
        Vincenzo Frascino <vincenzo.frascino@....com>,
        Marc Zyngier <maz@...nel.org>,
        Eugene Syromiatnikov <esyr@...hat.com>,
        Szabolcs Nagy <szabolcs.nagy@....com>,
        "H . J . Lu " <hjl.tools@...il.com>,
        Andrew Jones <drjones@...hat.com>,
        Arnd Bergmann <arnd@...db.de>, Jann Horn <jannh@...gle.com>,
        Richard Henderson <richard.henderson@...aro.org>,
        Kristina Martšenko <kristina.martsenko@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Florian Weimer <fweimer@...hat.com>,
        Sudakshina Das <sudi.das@....com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-arch@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH v7 00/11] arm64: Branch Target Identification support

On Wed, Feb 26, 2020 at 03:57:03PM +0000, Mark Brown wrote:
> This patch series implements support for ARMv8.5-A Branch Target
> Identification (BTI), which is a control flow integrity protection
> feature introduced as part of the ARMv8.5-A extensions.
> 
> Changes:
> 
> v7:
>  - Rebase onto v5.6-rc3.
>  - Move comment about keeping NT_GNU_PROPERTY_TYPE_0 internal into first
>    patch.
>  - Add an explicit check for system_supports_bti() when parsing BTI ELF
>    property for improved robustness.

Looks good. I sent a few more Reviewed-bys where I could. Who is
expected to pick this up? Catalin? Will?

I'm excited to have both the ELF parser and BTI landed. :)

-Kees

-- 
Kees Cook