On a Phenom II? Yeah, I just retired mine a month ago. On that
> system, the IOMMU hardware was kinda a legacy orphan thingy, I had to go > through all kinds of gyrations on the kernel command line in order to > initialize it correctly. I think I had it off in the bios, then enabled > it using a bunch of kernel commands. > > If it was off in the BIOS then i think that means you were just using CONFIG_GART_IOMMU not CONFIG_AMD_IOMMU
