linux-kernel - Re: [PATCH 05/10] arm64: mops: don't disable host MOPS instructions from EL2

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Message-ID: <ZBSCTvK0CtH6+Yqs@arm.com>
Date:   Fri, 17 Mar 2023 15:07:58 +0000
From:   Catalin Marinas <catalin.marinas@....com>
To:     Kristina Martsenko <kristina.martsenko@....com>
Cc:     linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev,
        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>,
        Mark Brown <broonie@...nel.org>,
        Luis Machado <luis.machado@....com>,
        Vladimir Murzin <vladimir.murzin@....com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 05/10] arm64: mops: don't disable host MOPS instructions
 from EL2

On Thu, Feb 16, 2023 at 04:00:07PM +0000, Kristina Martsenko wrote:
> To allow nVHE host EL0 and EL1 to use FEAT_MOPS instructions, configure
> EL2 to not cause these instructions to be treated as UNDEFINED. A VHE
> host is unaffected by this control.
> 
> Signed-off-by: Kristina Martsenko <kristina.martsenko@....com>

Reviewed-by: Catalin Marinas <catalin.marinas@....com>