On 10/01/19 19:06, Sean Christopherson wrote: > The MMIO generation scenario is almost > literally Almost also because of this /* * Generations must be different for each address space. * Init kvm generation close to the maximum to easily test the * code of handling generation number wrap-around. */ slots->generation = i * 2 - 150; which probably we can remove. Paolo a one-in-a-million occurrence, i.e. is not a performance > sensitive scenario.