[Qemu-devel] how to setup a watchdog?

[lejeczek]

apologies I bother devel, but..
I tried to get help on libvirt mailing list but not luck, 
then qemu, still nothing
I hope maybe somebody here?

I'm trying Qemu's watchdog.
My understanding was that hardware (here qemu's watchdog) 
would take
action, eg. cold reboot the system if there is no ping from 
the OS watchdog, so I
thought stopping watchdog service in VM should be a quick 
test, right?

I have this in the guest:

    <watchdog model='i6300esb' action='reset'>
      <address type='pci' domain='0x0000' bus='0x00' 
slot='0x08' function='0x0'/>
    </watchdog>

and I see /dev/watchdog in my guest. Yet nothing happens, 
guest(linux) runs uninterrupted.
I must be missing something, an expert said it's config 
problem, is it really is?

many thanks