Messages in this thread | | | Date | Thu, 2 May 2002 10:20:11 +1000 | From | Anton Blanchard <> | Subject | Re: Bug: Discontigmem virt_to_page() [Alpha,ARM,Mips64?] |
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> so ia64 is one of those archs with a ram layout with huge holes in the > middle of the ram of the nodes? I'd be curious to know what's the > hardware advantage of designing the ram layout in such a way, compared > to all other numa archs that I deal with. Also if you know other archs > with huge holes in the middle of the ram of the nodes I'd be curious to > know about them too. thanks for the interesting info!
From arch/ppc64/kernel/iSeries_setup.c:
* The iSeries may have very large memories ( > 128 GB ) and a partition * may get memory in "chunks" that may be anywhere in the 2**52 real * address space. The chunks are 256K in size.
Also check out CONFIG_MSCHUNKS code and see why I'd love to see a generic solution to this problem.
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