linux-kernel - Re: [PATCH v8 42/43] KVM: arm64: Expose KVM_ARM_VCPU

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Message-ID: <e26e4225-e9a8-40b6-bafb-9a007b20db96@redhat.com>
Date: Thu, 1 May 2025 13:04:39 +1000
From: Gavin Shan <gshan@...hat.com>
To: Steven Price <steven.price@....com>, kvm@...r.kernel.org,
 kvmarm@...ts.linux.dev
Cc: 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>,
 Suzuki K Poulose <suzuki.poulose@....com>, 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>,
 Shanker Donthineni <sdonthineni@...dia.com>, Alper Gun
 <alpergun@...gle.com>, "Aneesh Kumar K . V" <aneesh.kumar@...nel.org>
Subject: Re: [PATCH v8 42/43] KVM: arm64: Expose KVM_ARM_VCPU_REC to user
 space

On 4/16/25 11:42 PM, Steven Price wrote:
> Increment KVM_VCPU_MAX_FEATURES to expose the new capability to user
> space.
> 
> Signed-off-by: Steven Price <steven.price@....com>
> ---
> *NOTE*: This also exposes KVM_ARM_VCPU_HAS_EL2/KVM_ARM_VCPU_HAS_EL2_E2H0
> (as they are both less than KVM_ARM_VCPU_REC) - so this currently
> depends on nested virt being 'finished' before merging.
> 
> So this should be merged after: "KVM: arm64: Allow userspace to request
> KVM_ARM_VCPU_EL2*":
> https://lore.kernel.org/r/20250408105225.4002637-17-maz%40kernel.org
> ---
>   arch/arm64/include/asm/kvm_host.h | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 

Reviewed-by: Gavin Shan <gshan@...hat.com>