[PATCH] (4/4) discontigmem support for i386 against 2.4.20pre3

From: Patricia Gaughen (gone@us.ibm.com)
Date: Sat Aug 17 2002 - 19:44:52 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... which he'll post soon.

This patch depends on the three patches that I just sent out (modularization
of setup_arch(), modularization of mem_init(), and paddr -> pfn patches).

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-2.4.20-pre3_discontig_A1.patch

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