allocpages
kpt_base = allocpages(firstaddr, nkpt_base); /* KERNBASE to end */
kpt_phys = allocpages(firstaddr, nkpt_phys); /* KVA start */
KPML4phys = allocpages(firstaddr, 1); /* recursive PML4 map */
KPDPphys = allocpages(firstaddr, NKPML4E); /* kernel PDP pages */
kpd_phys = allocpages(firstaddr, nkpd_phys); /* kernel PD pages */
kpd_base = allocpages(firstaddr, NPDPEPG - KPDPI);
DMPDPphys = allocpages(firstaddr, NDMPML4E);
DMPDphys = allocpages(firstaddr, ndmpdp);
DMPDphys = allocpages(firstaddr, ndmpdp);
KPML4phys = allocpages(firstaddr, 1);
KPDPphys = allocpages(firstaddr, NKPML4E);
KPDphys = allocpages(firstaddr, NKPDPE);
KPTphys = allocpages(firstaddr, nkpt);