Re: [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer

[Andi Kleen <ak@suse.de>]

> Yeah, if you stick a PCI chip with a 30-bit PCI DMA mask into a machine
> with memory above 1GB, then copying has to happen.  Unless the memory
> allocator can avoid returning memory in the un-dma-able region...

With GFP_DMA this was possible, but the capability will be gone
for x86 systems if your required DMA region is < 4GB.

Besides I'm currently not planning to change mips so it might
stay the same if Ralf prefers that.

-Andi
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