[libvirt-users] BroadCom NIC not adding as PassThrough device

[Žilvinas Žaltiena]

Hi,

does your host support the passthrough (I/O MMU virtualization: i.e.
VT-d for Intel, AMD-Vi for AMD CPUs)? Is it enabled in BIOS and kernel?

On 2016-11-16 08:38, Tahir Masood wrote:
> Hi Guys,
> 
>  
> 
> I am trying to add a Broadcom Physical NIC to a virtual Machine as
> Passthrough device. However I am getting following error.
> 
>  
> 
> Error starting domain: unsupported configuration: host doesn't support
> passthrough of host PCI devices
> 
>  
> 
> Traceback (most recent call last):
> 
>   File "/usr/share/virt-manager/virtManager/asyncjob.py", line 88, in
> cb_wrapper
> 
>     callback(asyncjob, *args, **kwargs)
> 
>   File "/usr/share/virt-manager/virtManager/asyncjob.py", line 124, in tmpcb
> 
>     callback(*args, **kwargs)
> 
>   File "/usr/share/virt-manager/virtManager/libvirtobject.py", line 83,
> in newfn
> 
>     ret = fn(self, *args, **kwargs)
> 
>   File "/usr/share/virt-manager/virtManager/domain.py", line 1404, in
> startup
> 
>     self._backend.create()
> 
>   File "/usr/lib64/python2.7/site-packages/libvirt.py", line 1035, in create
> 
>     if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self)
> 
> libvirtError: unsupported configuration: host doesn't support
> passthrough of host PCI devices
> 
>  
> 
> libvirt allows to appply the changes to the VM xml configurations, but
> gives error the moment I try to start the VM.
> 
> I have tried following approaches.
> 
>  
> 
> 1- Open Virt-Manager, Shutdown VM, edit VM , add PCI hardware device ,
> locate BroadCom NIC, apply changes. Then I restart the VM.
> 
> 2- Also tried to add following XML tags one by one using 'virsh edit',
> but got same error.
> 
>  
> 
> Tag -1
> 
> <hostdev mode='subsystem' type='pci' managed='yes'>
> 
>   <source>
> 
>      <address domain='0x0000' bus='0x02' slot='0x00' function='0x1'/>
> 
>   </source>
> 
> </hostdev>
> 
>  
> 
> Tag -2
> 
>    <interface type='hostdev' managed='yes'>
> 
>      <source>
> 
>        <address type='pci' domain='0x0000' bus='0x02' slot='0x00'
> function='0x1'/>
> 
>      </source>
> 
>    </interface>
> 
>  
> 
> The detail of the BroadCOm NIC are as follows.
> 
> 02:00.1 Ethernet controller: Broadcom Limited NetXtreme II BCM5709
> Gigabit Ethernet (rev 20)
> 
>  
> 
>  
> 
> What would it take to add this NIC to VM as Passthrough Device?
> 
>  
> 
> Regards,
> 
>  
> 
> Tahir Masood
> 
> Senior Engineer, 
> 
> xFlow Research Inc.
> 
> +92-300-9779473
> 
> tahir.masood at xflowresearch.com <mailto:tahir.masood at xflowresearch.com>
> 
> www.xflowresearch.com <http://www.xflowresearch.com/>
> 
>  
> 
> 
> 
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