On 05/01/2015 20:17, Marcelo Tosatti wrote: > But there is no guarantee that vCPU-N has updated its pvti when > vCPU-M resumes guest instruction execution. You're right. > So the cost this patch removes is mainly from __getcpu (==RDTSCP?) ? > Perhaps you can use Gleb's idea to stick vcpu id into version field ? Or just replace __getcpu with rdtscp. Paolo -- 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