Re: [Qemu-devel] [PATCH 2/2 V7] qemu,qmp: add inject-nmi qmp command

[Anthony Liguori]

On 04/06/2011 02:27 PM, Peter Maydell wrote:
> > Right, but honestly speaking, I don't know how this works for other arches.
> >
> > So, the best thing to do is to have a general design that can be used
> > by any architecture. Of course that we can also add a new command later
> > if needed.
> Well, I'm not sure "send a random interrupt to the core" makes
> much sense for ARM... So what are we actually trying to model here?
> Some sort of way to do "press a front panel switch" via remote monitor
> protocol? I guess you could have an API for boards to register any
> switches they had...

http://publib.boulder.ibm.com/infocenter/lnxinfo/v3r0m0/index.jsp?topic=/liaai/crashdump/liaaicrashdumpnmiipmi.htm

If an OS is totally hosed (spinning with interrupts disabled), and NMI 
can be used to generate a crash dump.

It's a debug feature and modelling it exactly the way we are probably 
makes sense for other architectures too.  The real semantics are 
basically force guest crash dump.

Regards,

Anthony Liguori

> -- PMM