linux-kernel - Re: [PATCH 1/5] KVM: arm64: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX

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Message-ID: <ebfa56a6-d444-e82e-bf0d-946765c7f8ae@redhat.com>
Date:   Tue, 16 Nov 2021 16:50:23 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Vitaly Kuznetsov <vkuznets@...hat.com>,
        Marc Zyngier <maz@...nel.org>
Cc:     kvm@...r.kernel.org, Sean Christopherson <seanjc@...gle.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Eduardo Habkost <ehabkost@...hat.com>,
        Andrew Jones <drjones@...hat.com>,
        Huacai Chen <chenhuacai@...nel.org>,
        Aleksandar Markovic <aleksandar.qemu.devel@...il.com>,
        Anup Patel <anup.patel@....com>,
        Paul Mackerras <paulus@...abs.org>,
        Michael Ellerman <mpe@...erman.id.au>, kvm-ppc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-mips@...r.kernel.org,
        kvm-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/5] KVM: arm64: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS

On 11/16/21 14:23, Vitaly Kuznetsov wrote:
> (I'm about to send v2 as we have s390 sorted out.)
> 
> So what do we decide about ARM?
> - Current approach (kvm->arch.max_vcpus/kvm_arm_default_max_vcpus()
>   depending on 'if (kvm)') - that would be my preference.

That would be mine too.

Paolo

> - Always kvm_arm_default_max_vcpus to make the output independent on 'if
>   (kvm)'.
> - keep the status quo (drop the patch).