Date:   Fri, 17 Mar 2023 15:09:32 +0000
From:   Catalin Marinas <catalin.marinas@arm.com>
To:     Kristina Martsenko <kristina.martsenko@arm.com>
Cc:     linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev,
        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>,
        Mark Brown <broonie@kernel.org>,
        Luis Machado <luis.machado@arm.com>,
        Vladimir Murzin <vladimir.murzin@arm.com>,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH 06/10] KVM: arm64: hide MOPS from guests
Message-ID: <ZBSCrNxFPwZCEuVR@arm.com>
References: <20230216160012.272345-1-kristina.martsenko@arm.com>
 <20230216160012.272345-7-kristina.martsenko@arm.com>
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On Thu, Feb 16, 2023 at 04:00:08PM +0000, Kristina Martsenko wrote:
> As FEAT_MOPS is not supported in guests yet, hide it from the ID
> registers for guests.
> 
> The MOPS instructions are UNDEFINED in guests as HCRX_EL2.MSCEn is not
> set in HCRX_GUEST_FLAGS, and will take an exception to EL1 if executed.
> 
> Signed-off-by: Kristina Martsenko <kristina.martsenko@arm.com>

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