That said, I can't think that there are many people in the position where this is genuinely useful. You say "for whatever reason", but it's hard to think of one - more likely if someone is that constrained by memory, they're also running quite an old CPU, something on the order of six or seven years old. And such as person is probably quite happy running in traditional x86 mode...
No announcement yet.
Linux x32 Is Made Easier With Ubuntu 13.04