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From: Yeoreum Yun <yeoreum.yun@arm.com>
To: Catalin Marinas <catalin.marinas@arm.com>
Cc: will@kernel.org, broonie@kernel.org, anshuman.khandual@arm.com,
	joey.gouly@arm.com, maz@kernel.org, oliver.upton@linux.dev,
	frederic@kernel.org, james.morse@arm.com,
	hardevsinh.palaniya@siliconsignals.io,
	shameerali.kolothum.thodi@huawei.com, huangxiaojia2@huawei.com,
	mark.rutland@arm.com, samuel.holland@sifive.com,
	palmer@rivosinc.com, charlie@rivosinc.com,
	thiago.bauermann@linaro.org, bgray@linux.ibm.com,
	tglx@linutronix.de, puranjay@kernel.org, david@redhat.com,
	yang@os.amperecomputing.com, mbenes@suse.cz,
	joel.granados@kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, nd@arm.com,
	Peter Collingbourne <pcc@google.com>
Subject: Re: [PATCH v3 3/4] arm64/kernel: support store-only mte tag check
Date: Wed, 7 May 2025 11:47:35 +0100	[thread overview]
Message-ID: <aBs6R0Wq0nTYsJAc@e129823.arm.com> (raw)
In-Reply-To: <aBUF6JduwlhHVR9E@arm.com>

Hi Catalin,

> On Thu, Apr 10, 2025 at 09:07:22AM +0100, Yeoreum Yun wrote:
> > Introduce new flag -- MTE_CTRL_STORE_ONLY used to set store-only tag check.
> > This flag isn't overrided by prefered tcf flag setting but set together
>
> Nit: s/overrided/overridden/

Thanks!

>
> > with prefered setting of way to report tag check fault.
>
> The preferred mode set via sysfs is about whether we want synchronous or
> asynchronous tag check faults for reads/writes (or asymmetric). The
> store-only checking can be combined with sync/async, so they are
> slightly complementary. The question is whether one wants some global
> knob to turn on store-only in combination with sync/async. We could add
> more strings for sysfs like "(a)sync+storeonly"
>
> It would be good to hear Peter's opinion from an Android perspective.

Thanks to add, I'll wait for his comment for this :)

> --
> Catalin

--
Sincerely,
Yeoreum Yun


  reply	other threads:[~2025-05-07 10:51 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-04-10  8:07 [PATCH v3 0/4] support FEAT_MTE_STORE_ONLY feature Yeoreum Yun
2025-04-10  8:07 ` [PATCH v3 1/4] arm64/feature: add MTE_STORE_ONLY feature Yeoreum Yun
2025-05-02 17:24   ` Catalin Marinas
2025-05-07 10:48     ` Yeoreum Yun
2025-04-10  8:07 ` [PATCH v3 2/4] prtcl: introduce PR_MTE_STORE_ONLY Yeoreum Yun
2025-04-24 20:34   ` David Hildenbrand
2025-04-28 15:46     ` Yeo Reum Yun
2025-05-02 17:37     ` Catalin Marinas
2025-05-02 18:03       ` Peter Collingbourne
2025-05-02 20:19         ` Catalin Marinas
2025-04-10  8:07 ` [PATCH v3 3/4] arm64/kernel: support store-only mte tag check Yeoreum Yun
2025-05-02 17:50   ` Catalin Marinas
2025-05-07 10:47     ` Yeoreum Yun [this message]
2025-04-10  8:07 ` [PATCH v3 4/4] tools/kselftest: add MTE_STORE_ONLY feature hwcap test Yeoreum Yun
2025-05-02 17:51   ` Catalin Marinas
2025-05-07 10:49     ` Yeoreum Yun
2025-04-24 13:50 ` [PATCH v3 0/4] support FEAT_MTE_STORE_ONLY feature Yeoreum Yun
2025-04-24 20:29   ` David Hildenbrand

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