Re: [uml-devel] info on interrupts arch

[Jeff D. <jd...@ka...>]

bri...@ya... said:
> Is there any good description to how User Mode Linux uses interrupts
> in it's kernel?  Any pointers to how this is done?  

If you are able to hook into the IRQ system, that's in arch/um/kernel/irq.c,
and it's basically a copy of the i386 IRQ system.  If you need to get at
interrupts earlier, then look at arch/um/kernel/irq_user.c, where SIGIOs arrive
and get converted into IRQ in sigio_handler().

> Is there any
> documentation of the UM architecture from a developer's perspective? 

The code is about it.  There's some high-level design stuff in the various
papers I've written (and linked to from the UML site), but that doesn't get
into the code.

				Jeff