Linux内核页表的相关内容

linux内核页表

曾几何时，我一直被迷惑着，我知道所有进程和所有内核线程共享内核页表，也就是在页全局目录的768项以上的目录项指向的页表，我一直以为在创建新的进程的时候创建新进程的页全局目录的时候会连带的把内核的基础全局目录复制过去，实际上这是合理的，当我看到网上很多文章都这么说时，我似乎感到一种欣慰：我太有才了...

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Linux 内核页表拷贝和存储的问题

Linux 内核页表的内容是被所有进程共享的：那为什么不同进程的内核页表还要单独分配存储空间？要用深拷贝（memcpy master page table 的内容）而不用浅拷贝（所有进程共享同一份内核页表）的方式？这样做是出于什么原因考虑？

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更新时间 2022-08-23 10:52:51

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