> time_t is only one example. There are similar problems with the > handling of struct target_iovec. There are still other places with > similar problems. > > Yes, special casing can work. There's the possible problem of value > truncation when moving between 32 and 64 bits.
My point is that I expect there the be sufficiently many special cases that you can't simply rely on get_user() doing the right thing, even if you have "proper" types everywhere. It's also unclear whether sign extensions should depend on host or guest properties. Paul
