[PATCH] (2/2) i386 discontigmem support against 2.4.20pre8: discontigmem

[PATCH] (2/2) i386 discontigmem support against 2.4.20pre8: discontigmem

[Patricia Gaughen]

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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.  This will be posted separately at a later date.  A version
of this patch is in the 2.4 aa tree and has also 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/


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