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Date:   Fri, 12 May 2023 13:02:57 +0900
From:   Mark Brown <broonie@kernel.org>
To:     Kristina Martsenko <kristina.martsenko@arm.com>
Cc:     linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>,
        Oliver Upton <oliver.upton@linux.dev>,
        James Morse <james.morse@arm.com>,
        Suzuki K Poulose <suzuki.poulose@arm.com>,
        Zenghui Yu <yuzenghui@huawei.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Luis Machado <luis.machado@arm.com>,
        Vladimir Murzin <vladimir.murzin@arm.com>,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 11/11] kselftest/arm64: add MOPS to hwcap test
Message-ID: <ZF24SVYq27LKOwmW@finisterre.sirena.org.uk>
References: <20230509142235.3284028-1-kristina.martsenko@arm.com>
 <20230509142235.3284028-12-kristina.martsenko@arm.com>
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On Tue, May 09, 2023 at 03:22:35PM +0100, Kristina Martsenko wrote:
> Add the MOPS hwcap to the hwcap kselftest and check that a SIGILL is not
> generated when the feature is detected. A SIGILL is reliable when the
> feature is not detected as SCTLR_EL1.MSCEn won't have been set.

Reviewed-by: Mark Brown <broonie@kernel.org>

> +	/* CPYP [x0]!, [x1]!, x2! */
> +	asm volatile(".inst 0x1d010440"
> +		     : "+r" (dstp), "+r" (srcp), "+r" (size)
> +		     :
> +		     : "cc", "memory");

Verified against DDI0602 2023-03.

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