What surprised me was that this entire walk is fully hardware-driven -- no microcode involvement at all. The state machine reads the page directory entry, reads the page table entry, checks permissions, and writes back the Accessed and Dirty bits, all autonomously. Since it's hardware-driven, it runs in parallel with the microcode and needs its own memory bus arbitration -- the paging unit must share the bus with both data accesses from the microcode and prefetch requests from the instruction queue.
Фото: Alessandro Garofalo / Reuters
，这一点在heLLoword翻译官方下载中也有详细论述
Трамп высказался о непростом решении по Ирану09:14。业内人士推荐Line官方版本下载作为进阶阅读
Фото: Ilya Moskovets / URA.RU / Globallookpress.com
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