CPU_ACPIID_INVALID
topo_register_apic(apic_id, CPU_ACPIID_INVALID, true);
DEFINE_EARLY_PER_CPU_READ_MOSTLY(u32, x86_cpu_to_acpiid, CPU_ACPIID_INVALID);
topology_register_apic(apic_id, CPU_ACPIID_INVALID, true);
topology_register_apic(setup_data.v1.cpu_ids[cpu], CPU_ACPIID_INVALID, true);
topology_register_apic(m->apicid, CPU_ACPIID_INVALID, m->cpuflag & CPU_ENABLED);
if (cpu_acpi_id(cpu) != CPU_ACPIID_INVALID)
topology_register_apic(apicid++, CPU_ACPIID_INVALID, true);