Re: [Xen-users] Requesting Help - Error: pci: PCI Backend and pci-stub don't own device

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Wed, 2014-02-05 at 07:21 -0500, Mike Neiderhauser wrote:

> I have tried passing in pci=[05:00.0, 05:00.1] but not just
> pci=[05:00.0] or pci=[05:00.1].  This is due to needing both ports
> (each HVM I want to set up requires at minimum 2 NICs + the xenrb0
> port on vif)

OK. 
> The xm create error messages via different setup configurations:
> ############################################################################################################
> #pci=['01:00.0', '02:02.0', '02:04.0',
> '03:00.0','03:00.1','04:00.0','04:00.1']
> root@fiat:~# xm create /etc/xen/ubuntu-hvm.cfg 
> Using config file "/etc/xen/ubuntu-hvm.cfg".
> Error: pci: PCI Backend and pci-stub don't own device 0000:01:00.0

I don't know -- but I suspect this (and the other similar things) is
because bridge devices cannot be bound to pciback.


> ############################################################################################################
> #pci=['05:00.0', '05:00.1']
> root@fiat:~# xm create /etc/xen/ubuntu-hvm.cfg 
> Using config file "/etc/xen/ubuntu-hvm.cfg".
> Error: (22, 'Invalid argument')

This is the one I would have expected to work.

> I cannot provide a guest dmesg w/ a nic on pci passthrough xm create
> does not pass (nor does the domU show in xm list)

Understood.

> The xen dmesg (from the host OS) shows the following after I run the
> pci assignment script to pci back

Does it say anything extra after you try the final create with 22
Invalid Argument as the result?

Also you should look in "xm dmesg" (Xen's console) as well as
"dmesg" (dom0's console)

> Please let me know if you need any additional info.  I am looking into
> Xen 4.3 to see if that fixes my issue.

That might be good, especially if you use xl which is much better
supported than the deprecated xend toolstack.

Ian.



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