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Re: [Qemu-devel] Detecting Client OS BSOF/Kernel Oops

From: Mark Williamson
Subject: Re: [Qemu-devel] Detecting Client OS BSOF/Kernel Oops
Date: Wed, 6 Jun 2007 15:47:37 +0100
User-agent: KMail/1.9.6

> Clemens Kolbitsch wrote :
> > I'd like to detect if the client OS crashes... right now, only for
> > linux, but windows systems will become interesting for me as well in the
> > future...
> Real machines usually have hardware watchdogs for that. I do not know
> if qemu has one available for your target but that's the way I would
> go. Of course, you would have to configure the watchdog driver/daemon
> in the OS, so OS support is important.

Watchdog devices can be pretty simple - probably coming down to just a few IO 
ports.  A QEMU-based watchdog device ought to be fairly easy to implement, 
I'd imagine.  I've been thinking about doing this but haven't got round to 
tackling it yet.


Dave: Just a question. What use is a unicyle with no seat?  And no pedals!
Mark: To answer a question with a question: What use is a skateboard?
Dave: Skateboards have wheels.
Mark: My wheel has a wheel!

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