mapin_apic
apicadr = (uint32_t *)mapin_apic((uint32_t)hdrp->mpcnf_local_apic,
apicadr = mapin_apic((uint32_t)acpi_mapic_dtp->Address,
return (mapin_apic(addr, len, flags));
extern uint32_t *mapin_apic(uint32_t addr, size_t len, int flags);