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Date: Mon, 16 Mar 2026 17:44:15 +0000
From: Catalin Marinas <catalin.marinas@arm.com>
To: Mark Brown <broonie@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>, Joey Gouly <joey.gouly@arm.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Will Deacon <will@kernel.org>, Paolo Bonzini <pbonzini@redhat.com>,
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	Peter Maydell <peter.maydell@linaro.org>,
	Eric Auger <eric.auger@redhat.com>
Subject: Re: [PATCH v10 04/30] arm64/fpsimd: Determine maximum virtualisable
 SME vector length
Message-ID: <abhBb7HbMg3BC09D@arm.com>
References: <20260306-kvm-arm64-sme-v10-0-43f7683a0fb7@kernel.org>
 <20260306-kvm-arm64-sme-v10-4-43f7683a0fb7@kernel.org>
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In-Reply-To: <20260306-kvm-arm64-sme-v10-4-43f7683a0fb7@kernel.org>

On Fri, Mar 06, 2026 at 05:00:56PM +0000, Mark Brown wrote:
> As with SVE we can only virtualise SME vector lengths that are supported by
> all CPUs in the system, implement similar checks to those for SVE. Since
> unlike SVE there are no specific vector lengths that are architecturally
> required the handling is subtly different, we report a system where this
> happens with a maximum vector length of SME_VQ_INVALID.
> 
> Signed-off-by: Mark Brown <broonie@kernel.org>

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