On 2012-03-06 08:49, Liu, Jinsong wrote: > Jan, > > Any comments? I feel some confused about your point 'disable cpuid feature for older machine types by default': are you planning a common approach for this common issue, or, you just ask me a specific solution for the tsc deadline timer case? I think a generic solution for this can be as simple as passing a feature exclusion mask to cpu_init. You could simple append a string of "-feature1,-feature2" to the cpu model that is specified on creation. And that string could be defined in the compat machine descriptions. Does this make sense? Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html