Inter processor Interrrupts in ARM cortex A9 ( How To write an handler for Software generated Interrupt ( ARM) in Linux? )

Question

I read that the Software generated interrupts in ARM are used as Inter-processor interrupts. I can also see that 5 of those interrupts are already in use. I also know that A

Answer 1

I would like to add that an example of such inter-core communication can be found in TI multicore SoC's (i.e. OMAP3530). Some time ago when I was using such a mechanism, means were provided by TI. Specifically, it was the DSPLink Linux device driver which was providing such a functionality. At that time, unfortunately, it wasn't an open source solution, but maybe there is some technical paper from TI describing how it works ... Just a direction what you could investigate further :)

EDIT: In the meantime, it seems that they've made it open source. So, if that's what you are looking for, you can have a look: DSPLink and SysLink (successor of DSPLink)