Update 计算机操作系统 - 概述.md

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补充特权级、read 系统调用的执行过程、系统调用的开销与减少开销的方法、写文件与零拷贝，更新中断分类的描述，重新绘制配图，增加实测附录。

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CyC2018

2026-10-28 13:35:26 +08:00

parent 665be3526b

commit 5f2a46c13e

3 changed files with 97 additions and 10 deletions

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