linux-kernel - Re: [PATCH v3 4/4] tools/kselftest: add MTE_STORE

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Message-ID: <aBs6x8nFwvzVyJs0@e129823.arm.com>
Date: Wed, 7 May 2025 11:49:43 +0100
From: Yeoreum Yun <yeoreum.yun@....com>
To: Catalin Marinas <catalin.marinas@....com>
Cc: will@...nel.org, broonie@...nel.org, anshuman.khandual@....com,
	joey.gouly@....com, maz@...nel.org, oliver.upton@...ux.dev,
	frederic@...nel.org, james.morse@....com,
	hardevsinh.palaniya@...iconsignals.io,
	shameerali.kolothum.thodi@...wei.com, huangxiaojia2@...wei.com,
	mark.rutland@....com, samuel.holland@...ive.com,
	palmer@...osinc.com, charlie@...osinc.com,
	thiago.bauermann@...aro.org, bgray@...ux.ibm.com,
	tglx@...utronix.de, puranjay@...nel.org, david@...hat.com,
	yang@...amperecomputing.com, mbenes@...e.cz,
	joel.granados@...nel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, nd@....com
Subject: Re: [PATCH v3 4/4] tools/kselftest: add MTE_STORE_ONLY feature hwcap
 test

Hi Catalin,

> On Thu, Apr 10, 2025 at 09:07:23AM +0100, Yeoreum Yun wrote:
> > add MTE_STORE_ONLY feature hwcap test.
> >
> > Signed-off-by: Yeoreum Yun <yeoreum.yun@....com>
> > Reviewed-by: Mark Brown <broonie@...nel.org>
> > ---
> >  tools/testing/selftests/arm64/abi/hwcap.c | 6 ++++++
> >  1 file changed, 6 insertions(+)
> >
> > diff --git a/tools/testing/selftests/arm64/abi/hwcap.c b/tools/testing/selftests/arm64/abi/hwcap.c
> > index a539eeb0bfc0..32385f67498e 100644
> > --- a/tools/testing/selftests/arm64/abi/hwcap.c
> > +++ b/tools/testing/selftests/arm64/abi/hwcap.c
> > @@ -1104,6 +1104,12 @@ static const struct hwcap_data {
> >  		.hwcap_bit = HWCAP3_MTE_FAR,
> >  		.cpuinfo = "mte_far",
> >  	},
> > +	{
> > +		.name = "MTE_STOREONLY",
> > +		.at_hwcap = AT_HWCAP3,
> > +		.hwcap_bit = HWCAP3_MTE_STORE_ONLY,
> > +		.cpuinfo = "mte_store_only",
> > +	},
> >  };
>
> Please also add checks to tools/testing/selftests/arm64/mte/ to verify
> that read tag check faults are ignored when this is enabled.

Okay, I'll add related test cases in check_mmap_options and
check_user_mem.

--
Sincerely,
Yeoreum Yun