PG_U_IDX
kernel_pmap->pmap_bits[PG_U_IDX];
kernel_pmap->pmap_bits[PG_U_IDX];
kernel_pmap->pmap_bits[PG_U_IDX];
((*(pt_entry_t *)pte & pmap->pmap_bits[PG_U_IDX]) != 0)
pmap->pmap_bits[PG_U_IDX];
[PG_U_IDX] = 0, /* no support in EPT */
v |= pmap->pmap_bits[PG_U_IDX];
[PG_U_IDX] = X86_PG_U,
v |= pmap->pmap_bits[PG_U_IDX];
newpte |= pmap->pmap_bits[PG_U_IDX];