I found a problem with HP NUMA configuration in 2.6.7-rc3-mm1.  The
node_online_map is incorrect because of actions taken by
reassign_cpu_only_nodes in arch/ia64/mm/discontig.c.  The mm1 patch
which changes the mempolicy for the init_task uses this invalid
node_online_map and eventually uses a non-existent node's zonelist
when calling __alloc_pages.

The patch below takes care of this issue.  It puts the non-existent
nodes offline.
Signed-off-by: David Mosberger <davidm@hpl.hp.com>