On 06/12/2012 11:35 AM, Paulo Zanoni wrote: > My crystal ball tells me a check for IS_HASWELL_OR_NEWER would prevent > more changes to this code in the future. I think that a .has_ddi (or similar) flag would be better than checking for post-Haswell variants, as not necessarily all of them could work in the same way. But we are still far far away from having to face this case case anyway :). Eugeni