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JessonYue avatar JessonYue commented on May 31, 2024

物理地址空间是实实在在存在于计算机中，并且对于每一台计算机来说只有一个。
虚拟地址空间是指虚拟的、人们想象出来的地址空间，它实际并不存在。每个进程都有自己独立的虚拟空间，而且每个进程只能访问自己的地址空间。(做到了进程的隔离)

2的32次方 对应的是0-4G，那么其中有1G的内核空间，这个问题暂时这么理解，后面要看linux内核才能彻底搞定，内存的管理的原理

from computer-basics.

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