第八章 加强原始创新和关键核心技术攻关
The MMU is a venerable piece of technology, dating back to the 1960’s. Its page-based memory protection scheme is well-understood and has passed the test of time; I’ve taught its principles to hundreds of undergraduates, and it continues to be a cornerstone of modern OSes.
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Фонбет Чемпионат КХЛ。业内人士推荐谷歌作为进阶阅读
The implementation sidesteps the entire question of the kernel’s ability to write to unwritable userspace memory! It exerts the kernel’s control over the virtual memory subsystem to bypass the MMU entirely, allowing the kernel to simply write to its own writable address space. This renders the CR0.WP discussion moot.。业内人士推荐新闻作为进阶阅读