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1
vote
1answer
464 views

What happens after a page fault?

When a page fault occurs in a Linux system, the interrupt-handler has to figure out the reason why the page fault happened. But how ? Is there anywhere a special number for that !? If yes, where is ...
1
vote
1answer
213 views

Can an interupt be processed by software, without hardware support? [closed]

Can an interrupt be processed by software without the need for hardware suppport? Assume an x86 architecture.
23
votes
4answers
34k views

How is an Interrupt handled in Linux?

I just know that Interrupt is a hardware signal assertion caused in a processor pin. But I would like to know how Linux OS handles it. What all are the things that happen when an interrupt occurs?
10
votes
3answers
11k views

How does the Linux kernel handle shared IRQs?

According to what I've read so far, "when the kernel receives an interrupt, all the registered handlers are invoked." I understand that the registered handlers for each IRQ can be viewed via ...