# Re: \[PATCH v2 1/6\] KVM: arm64: Cap KVM\_CAP\_NR\_VCPUS by kvm\_arm\_default\_max\_vcpus()

- From: Paolo Bonzini \<pbonzini@redhat.com\>
- Date: 2021-11-17 12:08:06 
- List: linux-arm-kernel
- Page: https://ratatoskr.run/linux-arm-kernel/2021/11/1577450
- Thread: https://ratatoskr.run/kvm/2021/11/1576596/t.md

```text
On 11/16/21 17:34, Vitaly Kuznetsov wrote:
> -		r = num_online_cpus();
> +		/*
> +		 * ARM64 treats KVM_CAP_NR_CPUS differently from all other
> +		 * architectures, as it does not always bound it to
> +		 * num_online_cpus(). It should not matter much because this
                  ^^^^^^^^^^^^^^^^^^

KVM_CAP_MAX_VCPUS (sorry for the typo in my suggestion).  I'll fix it when applying.

Paolo

> +		 * is just an advisory value.
> +		 */
> +		r = min_t(unsigned int, num_online_cpus(),
> +			  kvm_arm_default_max_vcpus());


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