Comment 22 for bug 267089

OK I was not able to reproduce this on a x86_64 box with > 7 GB of memory on 2.6.27.5-101.fc10.x86_64.

Do you guys have something like this on lspci:

Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub

It seems the Intel 965 memory controller does IOMMU in software so I wonder if that is 100% correct if its the software for that. Not sure, just something someone pointed out to me.

You can try these patches, the first one just clarifies the type of memory we want to deal with the second one makes it consistent.

http://www.kernel.org/pub/linux/kernel/people/mcgrof/patches/ath9k/2008-11-14/