The x86 protection model is notoriously complex, with four privilege rings, segmentation, paging, call gates, task switches, and virtual 8086 mode. What's interesting from a hardware perspective is how the 386 manages this complexity on a 275,000-transistor budget. The 386 employs a variety of techniques to implement protection: a dedicated PLA for protection checking, a hardware state machine for page table walks, segment and paging caches, and microcode for everything else.
第一百四十二条 海警机构履行海上治安管理职责，行使本法规定的公安机关的职权，但是法律另有规定的除外。
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The locking problem。safew官方版本下载是该领域的重要参考
The government said £50m of funding, provided over three years, would be provided to councils and frontline homelessness services.