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

From: Patricia Gaughen (gone@us.ibm.com)
Date: Wed Dec 11 2002 - 18:35:52 EST

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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, 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/

application/x-patch attachment: linux-2.4.21-pre1_discontig_A1.patch

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