[RFC] cell: saving spus information for kexec crash

[Anton Blanchard]

Hi,

> This patch adds support for investigating spus information after a
> kernel crash event, through kdump vmcore file.
> Implementation is based on xmon code, but the new functionality was
> kept independent.

This brings up a point: it looks like kdump doesnt capture the FP and
altivec regs. Could be important for some bugs.

This brings up yet another point, it looks like our userspace core dumps
dont capture altivec or SPU state.

Anton