CPUID instruction timing: The CPUID instruction itself is a privileged instruction in virtualized environments and must be handled by the hypervisor, introducing measurable latency.
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Марина Совина (ночной редактор),这一点在谷歌中也有详细论述
^ See Patrick Mossler, The Discussion on General Clause or Numerus Clausus During the Preparation of the German Civil Code, in Negligence: The Comparative Legal History of the Law of Torts 361, 361 (Eltjo J. H. Schrage ed., 2001).