The main rule for data access is max(CPL, RPL) ≤ DPL. For code transfers, the rules get considerably more complex -- conforming segments, call gates, and interrupt gates each have different privilege and state validation logic. If all these checks were done in microcode, each segment load would need a cascade of conditional branches: is it a code or data segment? Is the segment present? Is it conforming? Is the RPL valid? Is the DPL valid? This would greatly bloat the microcode ROM and add cycles to every protected-mode operation.
Цены на нефть взлетели до максимума за полгода17:55
。关于这个话题，搜狗输入法下载提供了深入分析
文 | 空间秘探，作者 | 王小熊
事件发酵后，网友们的评论画风各异：有人调侃“赶紧删除这条帖子，两周内别告诉任何人”；有人脑补“卖家发现犯错时的崩溃表情”；。safew官方下载对此有专业解读
Алевтина Запольская (редактор отдела «Бывший СССР»)
Последние новости。旺商聊官方下载是该领域的重要参考