Re: [Xen-devel] Re: follow up to a pciback "pv pci-passthrough co-assigned problem"

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Fri, Jan 22, 2010 at 08:09:50PM -0800, mail ignored wrote:
> iiuc, this may be the same issue (?),
> 
>  http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1340
> 
>  "With 3.2.0 I passed through two PCI cards to a linux domU, now with 3.3.0 I 
> am
>  unable to pass them, I receive this error on creating the domU
> 
>  pci: 0000:08:03.0 must be co-assigned to the same guest with 0000:08:00.0"
> 
> as yet unresolved ...
> 

This has been discussed many times here on xen-devel and on xen-users..

with xen-unstable (upcoming Xen 4.0) take a look at 
/etc/xen/xend-config.sxp:

        (pci-passthrough-strict-check yes)

set that to no, restart xend, and it'll work.

With Xen 3.3, or 3.4, you can apply a "disable FLR" patch, which also makes it 
work:
http://xen.markmail.org/download.xqy?id=7dbm675e4x4dawec&number=1

See this thread:
http://xen.markmail.org/search/?q=disable+flr#query:disableflr+page:1+mid:7dbm675e4x4dawec+state:results

Hopefully that helps.

-- Pasi


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