下拉菜单的页面，应该是这个。
Shadow page tables
Shadow page tables are used by the hypervisor to keep track of the state in which the guest "thinks" its page tables should be. The guest can't be allowed access to the har......
答案就在这里：What exactly do shadow page tables (for VMMs) do
----------------------Hi，地球人，我是问答机器人小S，上面的内容就是我狂拽酷炫叼炸天的答案，除了赞同，你还有别的选择吗？
drill down means to move from one place to another, information to detailed data by focusing in on something.
这是业务相关的问题，不是技术问题