Note that there is no need to port every single program. You can still run a 64 bit userspace (or a 32 bit one for that matter), but for the apps where there i

Note that there is no need to port every single program. You can still run a 64 bit userspace (or a 32 bit one for that matter), but for the apps where there is a major benefit use x32. This also means you don't have to port every library etc.