linux-kernel - Re: [PATCH v3 0/5] arm64: ARMv8.7-A: MTE: Add asymm in-kernel support

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Date:   Thu,  7 Oct 2021 10:48:16 +0100
From:   Will Deacon <will@...nel.org>
To:     Vincenzo Frascino <vincenzo.frascino@....com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        kasan-dev@...glegroups.com
Cc:     catalin.marinas@....com, kernel-team@...roid.com,
        Will Deacon <will@...nel.org>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Branislav Rankov <Branislav.Rankov@....com>,
        Marco Elver <elver@...gle.com>,
        Andrey Konovalov <andreyknvl@...il.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Alexander Potapenko <glider@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Evgenii Stepanov <eugenis@...gle.com>
Subject: Re: [PATCH v3 0/5] arm64: ARMv8.7-A: MTE: Add asymm in-kernel support

On Wed, 6 Oct 2021 16:47:46 +0100, Vincenzo Frascino wrote:
> This series implements the in-kernel 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.
> 
> MTE is built on top of the AArch64 v8.0 virtual address tagging TBI
> (Top Byte Ignore) feature and allows a task to set a 4 bit tag on any
> subset of its address space that is multiple of a 16 bytes granule. MTE
> is based on a lock-key mechanism where the lock is the tag associated to
> the physical memory and the key is the tag associated to the virtual
> address.
> 
> [...]

Applied to arm64 (for-next/mte), thanks!

[1/5] kasan: Remove duplicate of kasan_flag_async
      https://git.kernel.org/arm64/c/f5627ec1ff2c
[2/5] arm64: mte: Bitfield definitions for Asymm MTE
      https://git.kernel.org/arm64/c/ba1a98e8b172
[3/5] arm64: mte: CPU feature detection for Asymm MTE
      https://git.kernel.org/arm64/c/d73c162e0733
[4/5] arm64: mte: Add asymmetric mode support
      https://git.kernel.org/arm64/c/ec0288369f0c
[5/5] kasan: Extend KASAN mode kernel parameter
      https://git.kernel.org/arm64/c/2d27e5851473

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev