Comment 33 for bug 203537

Hello,

beside iommu=soft which I proposed and tested successfully I also already had tested:

- iommu=noagp NO success
- iommu=noaperture SUCCESS (seems similar to =soft according to dmesg output)
- iommu=memaper1,2,3 NO success

Still I agree, that this should be considered as a "workaround" as AMDs hardware implementation of IOMMU should give some performance boost.