The answer is essentially hardware-level dependency injection. Before calling LD_DESCRIPTOR, the caller saves its desired test constant into a hardware latch using a micro-op called PTSAV (Protection Save). Within LD_DESCRIPTOR, another micro-op called PTOVRR (Protection Override) retrieves and fires the saved test.
// 步骤4：扩展左边界（向左找所有minVal的元素，全程不越界）
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The approaches here use OS-level permission scoping rather than kernel boundary isolation.。关于这个话题，WPS官方版本下载提供了深入分析