// No BYOB request - allocate and enqueue a chunk
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.
。快连下载安装是该领域的重要参考
描述：输入一个「环形数组」，计算每个元素的下一个更大元素。若不存在，返回 -1。
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