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

Andi Kleen
2007-08-14T21:05:51Z

> 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