L2_SLOT_KERN
#define L2_SLOT_KERNBASE L2_SLOT_KERN
#define PDIR_SLOT_KERN L2_SLOT_KERN
memcpy(&L2[L2_SLOT_KERN + NPDPG], &L2[L2_SLOT_KERN], PAGE_SIZE);
cpu_info_primary.ci_kpm_pdir = &L2[L2_SLOT_KERN + NPDPG];