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.
聚焦全球优秀创业者，项目融资率接近97%，领跑行业
。关于这个话题，heLLoword翻译官方下载提供了深入分析
更多精彩内容，关注钛媒体微信号（ID：taimeiti），或者下载钛媒体App
┌───────────────────────┐