Re: [Xen-devel] Issue with PCI-passthrough and pvops

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Mon, Oct 17, 2011 at 05:36:27PM +0200, Dario Faggioli wrote:
> Hi everyone,
> 
> I'm trying to setup PCI-passthrough for a network card on a testbox.
> With HVM, everything seems to work, while if I try with a pv-guest the
> domain crashes!
> 
> Here's the thing:
> --
> # xl pci-list-assignable-devices 
> 0000:07:00.0
> 0000:07:00.1
> 
> # cat xen/VMs/Debian-squeeze.pv | grep pci=
> #   pci=[ '[SSSS:]BB:DD.F[,option1[,option2[...]]]', ... ]
> pci=[ '07:00.0' ]
> 
> # xl create xen/VMs/Debian-squeeze.pv
> Parsing config file xen/VMs/Debian-squeeze.pv
> Daemon running with PID 5588
> 
> # xl list
> Name                                        ID   Mem VCPUs    State   Time(s)
> Domain-0                                     0   750    16     r-----    
> 2205.3
> Debian-squeeze_pv                            3   128     2     ---sc-      
> 19.8
> --
> 
> Again, the very same config and PCI device for an HVM domain starts, and
> I can see and bring up the NIC.
> 
> What am I doing wrong?

Do you have 'iommu=soft' in your guest config?

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