[PATCH] ia64: setup cpu_to_node for cpus not present

[PATCH] ia64: setup cpu_to_node for cpus not present

In latest linux-2.5 bitkeeper, if you turn on CONFIG_HOTPLUG_CPU w/
an NR_CPUS greater than physically presents CPUs, you'll end up taking
an MCA in __alloc_percpu().  kmem_cache_alloc_node() gets called with a
node value of -1.  It seems other architectures are defaulting the
cpu_to_node map to zero for possible, but not present cpus.  Here's a
trivial patch that does the same for ia64.

Signed-off-by: David Mosberger <davidm@hpl.hp.com>