Re: [Xen-devel] Problem passing a HP-DAT (USB) device to domU

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

'lspci -n' to find out what the numeric vendor-id and device-id is for the
device at PCI slot location 00:1d.7. Then add that vendor-id:device-id pair
to /etc/xen/xend-pci-permissive.sxp. When you create the domain that is
assigned the PCI device, you should see a warning appear in dmesg or
/var/log/messages about the fact that a domU is being allowed to write to
any part of a device's PCI config space. You can ignore that, but it shows
that the change to /etc/xen/xend-pci-permissive.sxp is working.

 -- Keir

On 7/8/07 23:28, "Matthias Wolf" <matthias.wolf@xxxxxx> wrote:

> Hi specialists,
> 
> I'm trying to pass a HP Surestore USB-drive to a domU. I'm hiding the
> pci-device in the dom0, capturing it in the domU, and rceive the
> following lines in /var/log/syslog of the dom0 after a reboot:
> 
> =======================================================================
> Aug  8 00:04:49 localhost kernel: pciback 0000:00:1d.7: Driver tried to
> write to a read-only configuration space field at offset 0x54,
> size 2. This may be harmless, but if you have problems with your device:
> Aug  8 00:04:49 localhost kernel: 1) see permissive attribute in sysfs
> Aug  8 00:04:49 localhost kernel: 2) report problems to the xen-devel
> mailing list along with details of your device obtained from lspci.
> =======================================================================
> 
> I'm not quite sure what I'm expected to do in the /sys-tree: root has
> write-permissions all the way down the branches.
> 
> I'm using the stable version of the xen-hypervisor 3.0.3-0-2 (debian).
> 
> I kind of *need* this functionality and would be very grateful for any
> kind of help or hint.
> 
> Thanx in advance,
> 
> Bests from Vienna/Austria
> Matthew A. Wolf
> 
> pS.: THANKS a whole lot for such a fine piece of software!
> 
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