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Re: [Xen-users] Shared interrupt in 2 domains: cards disabled

from [Arie Kraai]

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Subject:	Re: [Xen-users] Shared interrupt in 2 domains: cards disabled
From:	Arie Kraai <xen@xxxxxxxxxxx>
Date:	Mon, 11 Jul 2005 11:09:34 +0200
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> Xen 2.0-testing gave me a problem when a domain (using a dom0 kernel)
> tried to use a soundcard (hidden from dom0):
> with the same IRQ as the network-card in dom0:
> 
> The card produced sound for 4 seconds, then went mute. Moreover, the
> dom0 network-card also stopped operating (only xen-br0 still worked) and
> could not be brought back to life, not even after stopping all domains
> and xend:
> I had to reboot the system...
> Is this a bug or should there be no shared interrupts at all between
> domains?

The situation is even worse: using a USB device in domU (hidden from
dom0) with the same interrupt as a SATA controller in dom0 corrupted the
SATA-disk in dom0!

Please, does anyone have a clue about what's going on with shared
interrupts?

Thanks, Arie Kraai

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