[PATCH] (2/2) i386 discontigmem support against 2.4.21pre1: discontigmem

This patch provides generic discontiguous memory support for the i386
numa architecture.  The patch also provides supports for the ia32 IBM
NUMA-Q hardware platform.  John Stultz also has added support for the
x440 hardware, but now it's mine.  This will be posted separately at a 
later date.  A version of this patch has been accepted into the v2.5
tree starting with 2.5.34.

This patch depends on the paddr->pfn patch that I just sent out.

Assumptions made: 

        - that the first node has at least 900Mb of memory

Testing done: 

        - single proc desktop pc (CONFIG_X86_NUMAQ is not set)
        - 4 proc SMP system (CONFIG_X86_NUMAQ is not set)
        - 4 proc SMP system (CONFIG_X86_NUMAQ is not set, CONFIG_HIGHMEM=64GB)
        - 16 proc NUMA box with 4GB memory (CONFIG_X86_NUMAQ=y, 
		CONFIG_NUMA is not set)
        - 16 proc NUMA box with 4GB memory (CONFIG_X86_NUMAQ=y, 
		CONFIG_NUMA is not set, CONFIG_HIGHMEM=64GB)
        - 16 proc NUMA box with 4GB memory (CONFIG_X86_NUMAQ=y, 
		CONFIG_NUMA=y)
        - 16 proc NUMA box with 4GB memory (CONFIG_X86_NUMAQ=y, 
		CONFIG_NUMA=y, CONFIG_HIGHMEM=64GB)
        - 8 proc NUMA box with 8GB memeory (CONFIG_X86_NUMAQ=y, 
		CONFIG_NUMA=y, CONFIG_HIGHMEM=64GB)
	- 16 proc NUMA box with 16GB memory (CONFIG_X86_NUMAQ=y, 
		CONFIG_NUMA=y, CONFIG_HIGHMEM=64GB)

Any and all feedback regarding this patch is greatly appreciated.

Thanks,
Pat

-- 
Patricia Gaughen (gone@us.ibm.com)
IBM Linux Technology Center
http://www.ibm.com/linux/ltc/