[Qemu-devel] Third shot at adding IPMI to qemu

[minyard]

Ok, everything passes through checkpatch without an error now.  I have
added some tests to verify basic operation of the device, and I've
hacked in some documentation, though I'm not sure if it's in the proper
location, as I never got a response to my questions about it.

I would have liked to add tests for the watchdog timer, but there
doesn't appear to be a way to intercept resets or NMIs in the test
framework.

-corey