linux-kernel - Re: [PATCH v2 3/7] arm64: cpufeature: add Allocation Tag Access Permission (MTE

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Message-ID: <Z4Edgo6dvU3KBCLQ@arm.com>
Date: Fri, 10 Jan 2025 13:15:46 +0000
From: Catalin Marinas <catalin.marinas@....com>
To: "Aneesh Kumar K.V (Arm)" <aneesh.kumar@...nel.org>
Cc: linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	kvmarm@...ts.linux.dev, Suzuki K Poulose <Suzuki.Poulose@....com>,
	Steven Price <steven.price@....com>, Will Deacon <will@...nel.org>,
	Marc Zyngier <maz@...nel.org>, Mark Rutland <mark.rutland@....com>,
	Oliver Upton <oliver.upton@...ux.dev>,
	Joey Gouly <joey.gouly@....com>, Zenghui Yu <yuzenghui@...wei.com>
Subject: Re: [PATCH v2 3/7] arm64: cpufeature: add Allocation Tag Access
 Permission (MTE_PERM) feature

On Fri, Jan 10, 2025 at 04:30:19PM +0530, Aneesh Kumar K.V (Arm) wrote:
> This indicates if the system supports MTE_PERM. This will be used by KVM
> for stage 2 mapping. This is a CPUCAP_SYSTEM feature because if we enable
> the feature all cpus must have it.
> 
> Cc: Catalin Marinas <catalin.marinas@....com>
> Cc: Will Deacon <will@...nel.org>
> Signed-off-by: Aneesh Kumar K.V (Arm) <aneesh.kumar@...nel.org>

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