>> 
>> -    if (vm_need_virtualize_apic_accesses(vmx->vcpu.kvm))
>> +    if ((vmx->vcpu.vcpu_id == 0) &&
>> +        (vm_need_virtualize_apic_accesses(vmx->vcpu.kvm)))
>>              if (alloc_apic_access_page(vmx->vcpu.kvm) != 0)
>>                      return -ENOMEM;
>> 
>> 
> 
> We may not have vcpu id 0 (though it's very unlikely).
> 

Current LAPIC code assume vcpu_id = 0 for BSP.
And even no real support of APIC_ID change.

How about use  (vcpu->apic_base & MSR_IA32_APICBASE_BSP) ?

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