linux-kernel - Re: [PATCH 0/5] arm64: ARMv8.7-A: MTE: Add asymm mode support

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Message-ID: <CAMn1gO5sUhDkx4w-Kk8hw0xLbXmr129xeJa6YhxOeJ-v83hp6w@mail.gmail.com>
Date:   Mon, 20 Sep 2021 14:29:46 -0700
From:   Peter Collingbourne <pcc@...gle.com>
To:     Vincenzo Frascino <vincenzo.frascino@....com>
Cc:     Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        kasan-dev <kasan-dev@...glegroups.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Alexander Potapenko <glider@...gle.com>,
        Marco Elver <elver@...gle.com>,
        Evgenii Stepanov <eugenis@...gle.com>,
        Branislav Rankov <Branislav.Rankov@....com>,
        Andrey Konovalov <andreyknvl@...il.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Subject: Re: [PATCH 0/5] arm64: ARMv8.7-A: MTE: Add asymm mode support

On Mon, Sep 13, 2021 at 1:21 AM Vincenzo Frascino
<vincenzo.frascino@....com> wrote:
>
> This series implements the asymmetric mode support for ARMv8.7-A Memory
> Tagging Extension (MTE), which is a debugging feature that allows to
> detect with the help of the architecture the C and C++ programmatic
> memory errors like buffer overflow, use-after-free, use-after-return, etc.

Unless I'm missing something, it looks like this only includes KASAN
support and not userspace support. Is userspace support coming in a
separate patch?

The fact that this only includes KASAN support should probably be in
the commit messages as well.

Peter