From: Catalin Marinas <catalin.marinas@arm.com>
To: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Branislav Rankov <Branislav.Rankov@arm.com>,
Marco Elver <elver@google.com>,
Andrey Konovalov <andreyknvl@google.com>,
Evgenii Stepanov <eugenis@google.com>,
linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com,
Alexander Potapenko <glider@google.com>,
linux-arm-kernel@lists.infradead.org,
Andrey Ryabinin <aryabinin@virtuozzo.com>,
Will Deacon <will@kernel.org>, Dmitry Vyukov <dvyukov@google.com>
Subject: Re: [PATCH v4 1/5] arm64: mte: Add asynchronous mode support
Date: Tue, 19 Jan 2021 12:57:33 +0000 [thread overview]
Message-ID: <20210119125732.GB17369@gaia> (raw)
In-Reply-To: <20210118183033.41764-2-vincenzo.frascino@arm.com>
On Mon, Jan 18, 2021 at 06:30:29PM +0000, Vincenzo Frascino wrote:
> MTE provides an asynchronous mode for detecting tag exceptions. In
> particular instead of triggering a fault the arm64 core updates a
> register which is checked by the kernel after the asynchronous tag
> check fault has occurred.
>
> Add support for MTE asynchronous mode.
>
> The exception handling mechanism will be added with a future patch.
>
> Note: KASAN HW activates async mode via kasan.mode kernel parameter.
> The default mode is set to synchronous.
> The code that verifies the status of TFSR_EL1 will be added with a
> future patch.
>
> Cc: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Will Deacon <will@kernel.org>
> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
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next prev parent reply other threads:[~2021-01-19 12:59 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-18 18:30 [PATCH v4 0/5] arm64: ARMv8.5-A: MTE: Add async mode support Vincenzo Frascino
2021-01-18 18:30 ` [PATCH v4 1/5] arm64: mte: Add asynchronous " Vincenzo Frascino
2021-01-19 12:57 ` Catalin Marinas [this message]
2021-01-19 18:10 ` Andrey Konovalov
2021-01-18 18:30 ` [PATCH v4 2/5] kasan: Add KASAN mode kernel parameter Vincenzo Frascino
2021-01-19 18:10 ` Andrey Konovalov
2021-01-20 14:45 ` Vincenzo Frascino
2021-01-21 16:45 ` Vincenzo Frascino
2021-01-18 18:30 ` [PATCH v4 3/5] kasan: Add report for async mode Vincenzo Frascino
2021-01-19 13:04 ` Catalin Marinas
2021-01-19 14:23 ` Vincenzo Frascino
2021-01-19 14:46 ` Mark Rutland
2021-01-19 15:05 ` Vincenzo Frascino
2021-01-19 18:12 ` Andrey Konovalov
2021-01-20 14:46 ` Vincenzo Frascino
2021-01-18 18:30 ` [PATCH v4 4/5] arm64: mte: Enable async tag check fault Vincenzo Frascino
2021-01-19 14:34 ` Catalin Marinas
2021-01-19 14:45 ` Vincenzo Frascino
2021-01-18 18:30 ` [PATCH v4 5/5] arm64: mte: Inline mte_assign_mem_tag_range() Vincenzo Frascino
2021-01-19 14:45 ` Catalin Marinas
2021-01-19 15:48 ` Vincenzo Frascino
2021-01-19 18:12 ` Andrey Konovalov
2021-01-19 19:00 ` Catalin Marinas
2021-01-19 19:34 ` Andrey Konovalov
2021-01-19 18:09 ` [PATCH v4 0/5] arm64: ARMv8.5-A: MTE: Add async mode support Andrey Konovalov
2021-01-21 11:35 ` Vincenzo Frascino
2021-01-21 12:25 ` Andrey Konovalov
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