From: Catalin Marinas <catalin.marinas@arm.com>
To: Yeoreum Yun <yeoreum.yun@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: Fri, 2 May 2025 18:50:32 +0100 [thread overview]
Message-ID: <aBUF6JduwlhHVR9E@arm.com> (raw)
In-Reply-To: <20250410080723.953525-4-yeoreum.yun@arm.com>
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/
> 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.
--
Catalin
next prev parent reply other threads:[~2025-05-02 17:50 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 [this message]
2025-05-07 10:47 ` Yeoreum Yun
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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