When VM=1, the protected-mode bit goes low and the Entry PLA selects real-mode entry points -- MOV ES, reg takes the one-line path. Meanwhile, CPL is hardwired to 3 whenever VM=1, so the V86 task always runs at the lowest privilege level, under full paging protection. The OS can use paging to virtualize the 8086's 1 MB address space, even simulating A20 address line wraparound by mapping pages to the same physical frames.
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第六十八条 房屋出租人将房屋出租给身份不明、拒绝登记身份信息的人的，或者不按规定登记承租人姓名、有效身份证件种类和号码等信息的，处五百元以上一千元以下罚款；情节较轻的，处警告或者五百元以下罚款。
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