On Fri, Dec 09, 2011 at 03:53:49PM -0800, Keith Packard wrote: > RC6 should always work on IVB, and should work on SNB whenever IO > remapping is disabled. RC6 never works on Ironlake. Make the default > value for the parameter follow these guidelines. Setting the value > to either 0 or 1 will force the specified behavior. I still don't like this. We're in a situation where we clearly have to disable one feature or the other on SNB - but we're disabling the one that's going to be useful to a large number of people, and leaving the niche feature enabled. If we're going to merge this then let's turn off iommu on SNB by default. -- Matthew Garrett | mjg59 at srcf.ucam.org
