Ubuntu 10.10 PPC64

[Serge Hallyn]

Quoting Philipp Kern (pkern at ubuntu.com):
> Mainly the machines and kernels went 64bit and the userland was stuck in 32bit
> because nobody did another entirely new port.  And on some architectures you're
> not as register-constrained as on x86 so 64bit userlands might only be bigger
> in memory and cache and not more useful.

Right, it's not just that nobody bothered to do the new port, rather
there were some detailed papers on how 32-bit userspace performs much
better on ppc64, and explain why that is, in contrast to x86-64.