Re: PCI Passthrough, error: The driver 'pci-stub' is occupying your device 0000:08:06.2

Kenni Lund
2011-02-08T10:08:22Z

2011/2/7 Daniel P. Berrange <berrange@redhat.com>:
> On Sat, Feb 05, 2011 at 04:34:01PM +0000, James Neave wrote:
>> Hi,
>>
>> I'm trying to pass a NOVA-T-500 TV Tuner card through to a gust VM.
>> I'm getting the error "The driver 'pci-stub' is occupying your device
>> 0000:08:06.2"
>
> This is a rather misleading error message. It is *expected* that
> pci-stub will occupy the device. Unfortunately the rest of the
> error messages QEMU is printing aren't much help either, but
> ultimately something is returning -EBUSY in the PCI device assign
> step

James, as far as I remember, I had the same issue when I set up my
system. Looking at my current (working) boot-script, apparently I've
added a 4th line which removes the pci-stub again as a
workaround....and it works:

echo "4444 0016" > /sys/bus/pci/drivers/pci-stub/new_id
echo "0000:04:08.0" > /sys/bus/pci/drivers/ivtv/unbind
echo "0000:04:08.0" > /sys/bus/pci/drivers/pci-stub/bind
echo "4444 0016" > /sys/bus/pci/drivers/pci-stub/remove_id

Best regards
Kenni