vm_map_check_protection
rv = vm_map_check_protection(kernel_map, saddr, eaddr, prot, FALSE);
rv = vm_map_check_protection(map, trunc_page((vm_offset_t)addr),
boolean_t vm_map_check_protection (vm_map_t, vm_offset_t, vm_offset_t,
if (!vm_map_check_protection(map, addr, addr + size,
if (!vm_map_check_protection(map, addr, tmpaddr, VM_PROT_NONE, FALSE)) {