On Wed, 2012-07-11 at 10:17 +1000, Alexey Kardashevskiy wrote: > So the current one would be SPAPR_TCE_32?
No, the iommu type is SPAPR_TCE, but the *window* info you get here is the 32-bit window. My thinking is add some versionning and a bunch of reserved fields to that info struct so we can stick a few more things, or at the very least add a flags field, so we can return if/when we support DDW etc... on that iommu. Cheers, Ben.