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Re: [Xen-API] PCI passthrough - XCP vs XenServer


  • To: 'Phill Edwards' <philledwards@xxxxxxxxx>, "'Xen-api@xxxxxxxxxxxxx'" <Xen-api@xxxxxxxxxxxxx>
  • From: Dave Scott <Dave.Scott@xxxxxxxxxxxxx>
  • Date: Wed, 3 Jul 2013 12:42:59 +0000
  • Accept-language: en-GB, en-US
  • Delivery-date: Wed, 03 Jul 2013 12:43:30 +0000
  • List-id: User and development list for XCP and XAPI <xen-api.lists.xen.org>
  • Thread-index: AQHOd+ZCCU6h2bSclU2p9L64Dx6+tplS5NfggAAA6UA=
  • Thread-topic: [Xen-API] PCI passthrough - XCP vs XenServer

Oh sorry, reading my email backwards reveals that you may already have tried 
this :-)

Another thing to try is hotplugging the PCI devices into the VM with "xl 
pci-attach" in domain0.

Cheers,
Dave

> -----Original Message-----
> From: Dave Scott
> Sent: 03 July 2013 1:42 PM
> To: 'Phill Edwards'; Xen-api@xxxxxxxxxxxxx
> Subject: RE: [Xen-API] PCI passthrough - XCP vs XenServer
> 
> Hi,
> 
> > > your command should look like this:
> > >  # xe vm-param-set other-config:pci=0/0000:05:00.0,0/0000:05:00.2
> > > uuid=7a1f3bcd-4b2d-4c10-5aa4-4238a48f011d
> >
> > Thanks Marien. Unfortunately, even when I run the command like that I
> > only see 1 of the 2 when I run lspci on my VM, so for some reason it's
> > not getting passed through properly :( Perhaps it's something to do
> > with this particular card, I don't know, but I'm a little stuck now.
> 
> IIRC there's been some confusion in the past about what the first number
> ("0/") means in the PCI passthrough syntax. It's possible that some of the
> code is interpreting it as a virtual slot number of a plug ordering (or both).
> Try using the string
> 
> 0/0000:05:00.0,1/0000:05:00.2
> 
> Just in case there's a bug in the reboot code, I recommend powering off the
> VM and then starting it, rather than rebooting.
> 
> Cheers,
> Dave

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