In case anyone else would like to experment with NUMA code,
but doesn't have access to a NUMA machine ...

Here is a patch against 2.6.0test4 + ia64-030826 Mosberger patch that
will allow you to configure a kernel with:

	CONFIG_NUMA=y
	CONFIG_ACPI_NUMA=y
	CONFIG_DISCONTIGMEM=y
	CONFIG_VIRTUAL_MEM_MAP=y

and boot on a Tiger.  You may need to change the "phony_srat"
initialization in drivers/acpi/tables.c to match the configuration
of your machine, the version in this patch defines memory below 4G
to be on node 0, and memory in the range 4G-8G to be on node 1.
Cpu 0 & 1 are on node 0, cpu 2 & 3  are on node 1.

This patch includes some extra fixes in addition to adding the SRAT table:

1) execute find_memory() after acpi_numa_init() [arch/ia64/kernel/setup.c]

2) Don't allocate memory using alloc_bootmem() in early acpi initializations
[drivers/acpi/tables.c]

3) Don't use any memory in a granule with a hole [arch/ia64/kernel/efi.c]

-Tony

[Thanks to Martin Hicks and Jesse Barnes for patches 1 & 2]