x86/non-x86: percpu, node ids, apic ids x86.git fixup

[Luck, Tony]

> hm, as far as i could check, on ia64 UP the .percpu section link 
> difference was the only ia64 difference i could find out of those 
> changes. Could you try to copy a 2.6.24 include/asm-generic/percpu.h, 
> include/asm-ia64.h and include/linux/percpu.h into your current tree, 
> and see whether that boots? If yes, then it's the percpu changes. The 
> patch below does this ontop of very latest -git - and it builds fine 
> with your UP config with a crosscompiler.

Applied that patch and UP kernel built ok, and then crashed in the
same place with the memset() to a user-looking address from kmem_cache_alloc()

So the percpu changes are innocent ... something else since 2.6.24 is
to blame.  Only 5749 commits :-)  I'll start bisecting.

-Tony