Re: [Xen-users] ATI VGA Passthrough / Xen 4.2 / Linux 3.8.6

[Gordan Bobic <gordan@xxxxxxxxxx>]

On 04/15/2013 02:19 PM, Peter Maloney wrote:
> On 2013-04-15 14:24, Gordan Bobic wrote:
> > On 04/15/2013 01:02 PM, Peter Maloney wrote:
> > > On 2013-04-15 10:32, Aurélien MILLIAT wrote:
> > > > > I'm trying to get VGA passthrough to work to an XP x64 guest, and
> > > > > I'm seeing "interesting" things happening.
> > > > >
> > > > > I'm using the kernel and userspace tools from here:
> > > > > http://xen.crc.id.au/support/guides/install/#
> > > > > on Scientific Linux 6.
> > > > >
> > > > > I gave up on trying to get an Nvidia card to work in the guest
> > > > > having read about the extra patches required to get a non-Quadro
> > > > > card to work.
> > > > > So I switched to using an ATI 6450/7450 card. This works fine -
> > > > > almost.
> > > > > ATI cards have a secondary audio output device function on them for
> > > > > outputting audio over HDMI outputs. When I pass both the VGA and
> > > > > > the HDMI audio devices from the host to the guest, the guest
> > > > > cannot use the VGA card. It always shows up as unusable in the
> > > > > guest (yellow >exclamation mark in XP x64).
> > > I had this problem (windows XP only), and fixed it by setting:
> > >
> > > stdvga=1
> > That's another thing I've been meaning to ask - where are the VM
> > configs stored? I am using xend with VMs configured using virt-manager
> > on EL6, and I cannot figure out where it put the configuration. It
> > doesn't appear to be in /etc/xen. So where is it and how do I get to
> > it? I ask because virt-manager doesn't actually show a Video adapter
> > in the configuration after the VM is created (a bug no doubt).
> That possibly depends on your distro... with openSUSE, I created my vms
> with virt-manager, and then looked in /etc/xen and found a text version
> and an xml one... so I deleted the xml ones, and hand edited the text ones.
>
> Here is my very old working windows xp config:
>
> http://pastebin.com/WYawYpRM
>
> You can just copy that wherever you want, and use it from the command
> line and forget your old config.
>
> vim /path/to/file
> xm create /path/to/file
> xm list
> xm destroy nameofvm
> xm destroy vmid
I just tried that, and now I'm getting this.

# xm create /etc/xen/edi
Using config file "/etc/xen/edi".
Error: (22, 'Invalid argument')

Interestingly, I'm also now getting that error message when I am using 
virt-manager to start the same domain. It seems to be related to having 
PCI devices passed through. If I comment out the pci= line, the domain 
gets created fine.
Digging a little further, it seems to be specifically related to 
actually passing the ATI card through. If I remove that and leave the 
PCI network card passed through, that works fine.
This is where things appear to go wrong in xend.log:

[2013-04-20 18:05:36 10570] ERROR (XendDomainInfo:2933) 
XendDomainInfo.initDomain: exception occurred
Traceback (most recent call last):
  File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py", 
line 2920, in _initDomain
    self._createDevices()
  File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py", 
line 2396, in _createDevices
    self.pci_device_configure_boot()
  File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py", 
line 627, in pci_device_configure_boot
    self.pci_device_configure(dev_sxp, first_dev = first)
  File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py", 
line 970, in pci_device_configure
    devid = self._createDevice('pci', existing_pci_conf)
  File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py", 
line 2327, in _createDevice
    return self.getDeviceController(deviceClass).createDevice(devConfig)
  File 
"/usr/lib64/python2.6/site-packages/xen/xend/server/DevController.py", 
line 67, in createDevice
    self.setupDevice(config)
  File "/usr/lib64/python2.6/site-packages/xen/xend/server/pciif.py", 
line 453, in setupDevice
    self.setupOneDevice(d)
  File "/usr/lib64/python2.6/site-packages/xen/xend/server/pciif.py", 
line 353, in setupOneDevice
    allow_access = True)
Error: (22, 'Invalid argument')
[2013-04-20 18:05:36 10570] ERROR (XendDomainInfo:488) VM start failed
Traceback (most recent call last):
  File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py", 
line 474, in start
    XendTask.log_progress(31, 60, self._initDomain)
  File "/usr/lib64/python2.6/site-packages/xen/xend/XendTask.py", line 
209, in log_progress
    retval = func(*args, **kwds)
  File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py", 
line 2936, in _initDomain
    raise VmError(str(exn))
VmError: (22, 'Invalid argument')
[2013-04-20 18:05:36 10570] DEBUG (XendDomainInfo:3077) 
XendDomainInfo.destroy: domid=18
[2013-04-20 18:05:37 10570] DEBUG (XendDomainInfo:2402) Destroying 
device model
[2013-04-20 18:05:37 10570] INFO (image:619) edi device model terminated
[2013-04-20 18:05:37 10570] DEBUG (XendDomainInfo:2409) Releasing devices
[2013-04-20 18:05:37 10570] DEBUG (XendDomainInfo:2415) Removing vbd/768
[2013-04-20 18:05:37 10570] DEBUG (XendDomainInfo:1276) 
XendDomainInfo.destroyDevice: deviceClass = vbd, device = vbd/768
[2013-04-20 18:05:37 10570] DEBUG (XendDomainInfo:2415) Removing vfb/0
[2013-04-20 18:05:37 10570] DEBUG (XendDomainInfo:1276) 
XendDomainInfo.destroyDevice: deviceClass = vfb, device = vfb/0
[2013-04-20 18:05:37 10570] DEBUG (XendDomainInfo:2407) No device model
[2013-04-20 18:05:37 10570] DEBUG (XendDomainInfo:2409) Releasing devices
[2013-04-20 18:05:37 10570] DEBUG (XendDomainInfo:2415) Removing vbd/768
[2013-04-20 18:05:37 10570] DEBUG (XendDomainInfo:1276) 
XendDomainInfo.destroyDevice: deviceClass = vbd, device = vbd/768
[2013-04-20 18:05:37 10570] ERROR (XendDomainInfo:108) Domain 
construction failed
Traceback (most recent call last):
  File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py", 
line 106, in create
    vm.start()
  File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py", 
line 474, in start
    XendTask.log_progress(31, 60, self._initDomain)
  File "/usr/lib64/python2.6/site-packages/xen/xend/XendTask.py", line 
209, in log_progress
    retval = func(*args, **kwds)
  File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py", 
line 2936, in _initDomain
    raise VmError(str(exn))
VmError: (22, 'Invalid argument')



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