pmap_clear_bits
pmap_clear_bits(ptep, ATTR_DESCR_VALID);
pmap_clear_bits(lip, ATTR_DESCR_VALID);
pmap_clear_bits(l1, ATTR_SW_WIRED);
pmap_clear_bits(l2, ATTR_SW_WIRED);
pmap_clear_bits(l3, ATTR_SW_WIRED);
pmap_clear_bits(pte, ATTR_AF);
pmap_clear_bits(pte, ATTR_AF);
pmap_clear_bits(l3, ATTR_AF);
pmap_clear_bits(ptep, ATTR_S1_AP_RW_BIT);
pmap_clear_bits(l2, PTE_SW_WIRED);
pmap_clear_bits(l3, PTE_SW_WIRED);
pmap_clear_bits(l2, PTE_A);
pmap_clear_bits(l3, PTE_A);
pmap_clear_bits(l3, PTE_D | PTE_W);
pmap_clear_bits(l3, PTE_D | PTE_W);