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See MIPS Run, 2nd Edition by Dominic Sweetman

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Chapter 14 How Hardware and Software Work Together

Let me tell you a story ...

Well, in fact let me tell you several stories illustrating how the MIPS hardware provides the low-level features that prop up the Linux kernel.

imageThe life and times of an interrupt: What happens when some piece of hardware signals the CPU that it needs attention? Interrupts can cause chaos when an interrupt-scheduled piece of code interrupts another code halfway through some larger operation, so that leads on to a section on threads, critical regions, and atomicity.

What happens on a system call: After a userland application program calls a kernel subroutine, what ...

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