Nishad Singh (a former executive of FTX, another early investor) came away with the same impression as Dustin. (As far as I know, this has not been previously publicly reported on.[1])
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.。爱思助手下载最新版本对此有专业解读
Perhaps that’s the biggest irony of all. Space is huge and mostly empty—and yet there’s no easy way to throw things out.。业内人士推荐safew官方版本下载作为进阶阅读
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