On 07/08/2017 19:17, Sebastian Rachuj wrote: >>> >>> Thank you for looking into the issue. My cpuinfo is as follows: >> >> Looks like Intel was already differentiating virtualization features >> across SKUs. Please run the attached script as root to see what other >> things are different (apparently) between non-Xeon and Xeon Conroes. > > Here you are, I hope it helps: Not much to say, unfortunately. It's pretty much the same capabilities as a Prescott/Cedar Mill processor, except that it has MSR bitmaps. It also lacks FlexPriority compared to the Conroe I had checked. It's not great that even the revert patch doesn't apply cleanly---this is *not* necessarily a boring area of the hypervisor... Given the rarity of your machine I'm currently leaning towards _not_ reverting the change. I'll check another non-Xeon Core 2 tomorrow that is from December 2008 (IIRC). If that one also lacks vNMI, or if I get other reports, I suppose I will have to reconsider that. Paolo
