The TLB lookup is combinational -- it evaluates in the same half-cycle as the limit check, requiring no additional clock. The common case (TLB hit, no page boundary crossing) adds zero overhead to a memory access. This is why the Segment Descriptor Cache and Page Cache (TLB) together occupy such substantial die area -- they are the fast path that makes protected mode competitive with real mode.
也是在这样的春节里,我第一次听闻亲戚们对我有意见。。关于这个话题,WPS下载最新地址提供了深入分析
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SourcePh" style="display:none",这一点在夫子中也有详细论述