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在上一篇文章中，我们已经了解了中断和异常的一些概念，对于中断和异常也有了大概的理解。那么，系统中硬件到底是如何处理中断和异常的呢？本文我们就以常见的X86架构为例，看看中断和异常的硬件工作原理。1 高级可编程中断控制器-APIC之前，我们主要考虑的单处理器系统，如果是多处理器系统，主P...

《LINUX3.0内核源代码分析》第二章：中断和异常【转】

转自：http://blog.chinaunix.net/uid-25845340-id-2982887.html 摘要：第二章主要讲述linux如何处理ARM cortex A9多核处理器的中断、异常。介绍了中断向量表的入口、通用的中断处理代码、中断和软中断、延迟处理、中断异常的返回过程。第二章...

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Linux的中断和异常扫盲笔记

广义的中断：什么是中断：所谓中断是指CPU对系统发生的某个事件作出的一种反应，让CPU暂时停止当前程序的执行转而执行处理新情况的程序和执行过程：CPU在遇到某个事件时，暂停正在执行的程序，保留现场后自动地转去执行相应的处理程序，处理完该事件后再返回断点继续执行被“打断”的程序。事实上CPU对于中...

Linux操作系统基础知识之五：中断和异常

Q1. 什么是中断？什么是异常？二者有何不同？ A： 1) 中断控制是为克服对I/O接口采用程序查询控制服务方式所带来的处理器低效率...

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