uvm_unmap
uvm_unmap(&p->p_vmspace->vm_map, vmr->vmr_va,
uvm_unmap(&p->p_p->ps_vmspace->vm_map,
uvm_unmap(&vm->vm_map, VM_MIN_ADDRESS, VM_MAXUSER_ADDRESS);
uvm_unmap(kernel_map, va, va + timekeep_sz);
uvm_unmap(&io->io_proc->p_vmspace->vm_map, start, end);
uvm_unmap(&vm->vm_map, trunc_page(shmmap_s->va), end);
uvm_unmap(kernel_map, node->tn_pgptr, node->tn_pgptr + PAGE_SIZE);
uvm_unmap(kernel_map, va, va + round_page(pgoff + sz));
uvm_unmap(kernel_map, va, va + PAGE_SIZE);
uvm_unmap(kernel_map,
uvm_unmap(kernel_map, va, va + PAGE_SIZE);
uvm_unmap(*kv->kv_map, sva, eva);
void uvm_unmap(struct vm_map *, vaddr_t, vaddr_t);
uvm_unmap(map, *addr, *addr + size);
uvm_unmap(map, *addr, *addr + size);
uvm_unmap(&vm->vm_map, new, old);