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Linux网络子系统中DMA机制的实现
本文由西邮陈莉君教授研一学生进行解析,由白嘉庆整理,薛晓雯编辑,崔鹏程校对. 我们先从计算机组成原理的层面介绍DMA,再简单介绍Linux网络子系统的DMA机制是如何的实现的。 一、计算机组成原理中的DMA 以往的I/O设备和主存交换信息都要经过CPU的操作。
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