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SubjectRe: [PATCH v2 1/6] KVM: arm64: Cap KVM_CAP_NR_VCPUS by kvm_arm_default_max_vcpus()
On Tue, 16 Nov 2021 16:34:38 +0000,
Vitaly Kuznetsov <> wrote:
> Generally, it doesn't make sense to return the recommended maximum number
> of vCPUs which exceeds the maximum possible number of vCPUs.
> Note: ARM64 is special as the value returned by KVM_CAP_MAX_VCPUS differs
> depending on whether it is a system-wide ioctl or a per-VM one. Previously,
> KVM_CAP_NR_VCPUS didn't have this difference and it seems preferable to
> keep the status quo. Cap KVM_CAP_NR_VCPUS by kvm_arm_default_max_vcpus()
> which is what gets returned by system-wide KVM_CAP_MAX_VCPUS.
> Signed-off-by: Vitaly Kuznetsov <>

Acked-by: Marc Zyngier <>


Without deviation from the norm, progress is not possible.

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