linux-kernel - Re: [PATCH v8 38/43] arm64: RME: Configure max SVE vector length for a Realm

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Message-ID: <4f1d5bd0-f06a-408a-9468-307a83d05b7d@arm.com>
Date: Tue, 20 May 2025 13:52:08 +0100
From: Suzuki K Poulose <suzuki.poulose@....com>
To: Steven Price <steven.price@....com>, kvm@...r.kernel.org,
 kvmarm@...ts.linux.dev
Cc: Jean-Philippe Brucker <jean-philippe@...aro.org>,
 Catalin Marinas <catalin.marinas@....com>, Marc Zyngier <maz@...nel.org>,
 Will Deacon <will@...nel.org>, James Morse <james.morse@....com>,
 Oliver Upton <oliver.upton@...ux.dev>, Zenghui Yu <yuzenghui@...wei.com>,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
 Joey Gouly <joey.gouly@....com>, Alexandru Elisei
 <alexandru.elisei@....com>, Christoffer Dall <christoffer.dall@....com>,
 Fuad Tabba <tabba@...gle.com>, linux-coco@...ts.linux.dev,
 Ganapatrao Kulkarni <gankulkarni@...amperecomputing.com>,
 Gavin Shan <gshan@...hat.com>, Shanker Donthineni <sdonthineni@...dia.com>,
 Alper Gun <alpergun@...gle.com>, "Aneesh Kumar K . V"
 <aneesh.kumar@...nel.org>
Subject: Re: [PATCH v8 38/43] arm64: RME: Configure max SVE vector length for
 a Realm

On 16/04/2025 14:42, Steven Price wrote:
> From: Jean-Philippe Brucker <jean-philippe@...aro.org>
> 
> Obtain the max vector length configured by userspace on the vCPUs, and
> write it into the Realm parameters. By default the vCPU is configured
> with the max vector length reported by RMM, and userspace can reduce it
> with a write to KVM_REG_ARM64_SVE_VLS.
> 
> Signed-off-by: Jean-Philippe Brucker <jean-philippe@...aro.org>
> Signed-off-by: Steven Price <steven.price@....com>

Reviewed-by: Suzuki K Poulose <suzuki.poulose@....com>