Re: [Xen-users] can not unbind pci device, xen kernel, openSUSE

[István HERCZEG <advoper@xxxxxxxxx>]

I found the reason way I can't find the ../pciback directory. The pciback module makes available ../pciback.
After I did
modprobe pciback 
then I can access /sys/bus/pci/drivers/pciback and wirte the new_slot and bind (instead of bindcat)

doing:
 dmesg | grep -i seiz
[ 1613.652339] pciback 0000:00:1a.0: seizing device
[ 1700.984342] pciback 0000:00:1d.0: seizing device

seems ok.

but
xm create windowsxp-2 pci=00:1a.0 pci=00:1d.0
Using config file "./windowsxp-2".
Error: failed to assign device: maybe the platform doesn't support VT-d, or VT-d isn't enabled properly?

:( failure again...

2010. október 30. 17:56 Richie írta, <listmail@xxxxxxxxxxxx>:

On 10/30/2010 11:39 AM, István HERCZEG wrote:

Hi,

thank you for quick answer. You was right I missed the format. But I still have a problem. Continue the PCI unbind procedure the wiki says[1]:

echo -n "0000:00:1a.0" /sys/bus/pci/drivers/pciback/new_slot

and ..
echo -n "0000:00:1a.0" /sys/bus/pci/drivers/pciback/bind_cat

In my openSUSE 11.2 there are no /sys/bus/pci/drivers/pciback directory. OK. I have /sys/bus/pci/drivers/pci-stub maybe this would be nice[2]:

continuing the procedure:

echo -n "0000:00:1a.0" /sys/bus/pci/drivers/pci-stub/new_slot
-bash: new_slot: No such file or directory
echo -n "0000:00:1a.0" /sys/bus/pci/drivers/pci-stub/bindcat
-bash: bindcat: No such file or directory

I get these messages ...

Regards,
Istvan

This is from some notes I have, but
first find your device in lspci -n output

Say I had a device as follows:
00:01.0 0604: 8086:29a1 (rev 02)

I'd try:
echo "8086 29a1" > /sys/bus/pci/drivers/pci-stub/new_id
echo "0000:00:01.0" > /sys/bus/pci/devices/0000:00:01.0/driver/unbind
echo "0000:00:01.0" > /sys/bus/pci/drivers/pci-stub/bind

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