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.
The feature was first spotted by 9to5Google earlier this week, but it appears to be rolling out on a larger scale.
。服务器推荐是该领域的重要参考
2025年岁末，中共中央政治局召开民主生活会，习近平总书记深刻指出：“共产党人是唯物主义者，务实是必备品格，必须实事求是、求真务实、真抓实干。”
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Seems like charming stuff. And I'm always a sucker for Kevin Kline. — K.P.