Hi, there are some new CPUID features that are safe for guests to see, as they don't require OS awareness (FPU/ALU related instructions only). Among features for new AMD CPUs there is also the PCLMULQDQ bit, which Intel CPU have already for quite a while. Signed-off-by: Andre Przywara Regards, Andre. -- Andre Przywara AMD-Operating System Research Center (OSRC), Dresden, Germany