On Thu, Nov 11, 2021, Paolo Bonzini wrote: > On 11/11/21 14:47, Vitaly Kuznetsov wrote: > > diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c > > index ac83d873d65b..91ef1b872b90 100644 > > --- a/arch/x86/kvm/x86.c > > +++ b/arch/x86/kvm/x86.c > > @@ -4137,7 +4137,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) > > r = !static_call(kvm_x86_cpu_has_accelerated_tpr)(); > > break; > > case KVM_CAP_NR_VCPUS: > > - r = KVM_SOFT_MAX_VCPUS; > > + r = num_online_cpus(); I doubt it matters much in practice, but this really should be r = min(num_online_cpus(), KVM_MAX_VCPUS); > > break; > > case KVM_CAP_MAX_VCPUS: > > r = KVM_MAX_VCPUS; > > >
