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

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

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

[Christoph Hellwig]

On Wed, Dec 11, 2002 at 03:35:52PM -0800, Patricia Gaughen wrote:
> 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.
> 

[snip]

> Any and all feedback regarding this patch is greatly appreciated.

The patch looks very nice.  And it looks like it got testing in -aa
for a fair while.