linux-kernel - Re: [PATCH v2 11/11] kselftest/arm64: add MOPS to hwcap test

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <ZF24SVYq27LKOwmW@finisterre.sirena.org.uk>
Date:   Fri, 12 May 2023 13:02:57 +0900
From:   Mark Brown <broonie@...nel.org>
To:     Kristina Martsenko <kristina.martsenko@....com>
Cc:     linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, Marc Zyngier <maz@...nel.org>,
        Oliver Upton <oliver.upton@...ux.dev>,
        James Morse <james.morse@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Zenghui Yu <yuzenghui@...wei.com>,
        Mark Rutland <mark.rutland@....com>,
        Luis Machado <luis.machado@....com>,
        Vladimir Murzin <vladimir.murzin@....com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 11/11] kselftest/arm64: add MOPS to hwcap test

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@...nel.org>

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

Verified against DDI0602 2023-03.

Download attachment "signature.asc" of type "application/pgp-signature" (489 bytes)