UVM_ET_FREEMAPPED
UVM_ASSERT(map, (iter->etype & UVM_ET_FREEMAPPED) != 0,
UVM_ASSERT(map, (iter->etype & UVM_ET_FREEMAPPED) == 0,
(entry->etype & UVM_ET_FREEMAPPED) ? 'T' : 'F', free);
new_entry->etype |= old_entry->etype & ~UVM_ET_FREEMAPPED;
KASSERT((entry->etype & UVM_ET_FREEMAPPED) == 0);
entry->etype |= UVM_ET_FREEMAPPED;
KASSERT((entry->etype & UVM_ET_FREEMAPPED) != 0 || uaddr == NULL);
entry->etype &= ~UVM_ET_FREEMAPPED;
KASSERT(entry == NULL || (entry->etype & UVM_ET_FREEMAPPED) == 0);