pc: apic_common: Reset APIC ID to initial ID when switching into x2APIC mode
SDM: x2APIC State Transitions: State Changes From xAPIC Mode to x2APIC Mode " Any APIC ID value written to the memory-mapped local APIC ID register is not preserved " Signed-off-by: NIgor Mammedov <imammedo@redhat.com> Reviewed-by: NRadim Krčmář <rkrcmar@redhat.com> Reviewed-by: NEduardo Habkost <ehabkost@redhat.com> Signed-off-by: NEduardo Habkost <ehabkost@redhat.com>
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