get_apic_id
u32 (*get_apic_id)(u32 id);
return apic->get_apic_id(reg);
.get_apic_id = physflat_get_apic_id,
.get_apic_id = noop_get_apic_id,
.get_apic_id = numachip1_get_apic_id,
.get_apic_id = numachip2_get_apic_id,
.get_apic_id = default_get_apic_id,
.get_apic_id = x2apic_get_apic_id,
.get_apic_id = x2apic_get_apic_id,
.get_apic_id = x2apic_get_apic_id,
.get_apic_id = x2apic_get_apic_id,
.get_apic_id = xen_get_apic_id,
get_apic_id(t);