Re: [PATCH v1 06/11] KVM: x86: use hardware-compatible format for APIC ID register

Paolo Bonzini
2016-07-01T15:07:32Z

On 01/07/2016 16:54, Radim Krčmář wrote:
>> > (Hint: we
>> > want kvm-unit-tests for this).
> :) Something like this?
>
> enable_xapic()
> id = apic_id()
> set_apic_id(id+1) // ?
> enable_x2apic()
> id == apic_id() & 0xff
> disable_apic()
> enable_xapic()
> id == apic_id()
>

Yes, plus checking that it "moves" appropriately between low and high bits.

Thanks,

Paolo