Xen project Mailing List

Hi,

My ubuntu 12.10 vanilla install (amd64) recently got xen hypervisor and utils upgraded to 4.1.3-3ubuntu1.5, via the legacy upgrade path. After this I experience problems with passing through some PCI devices to a windows 8 domU. I get the same problem as Gordan gets with 4.2 referred in this message: http://lists.xen.org/archives/html/xen-users/2013-04/msg00341.html - it seems to be related to some update made to both trees.

My symptom is that out of three devices/functions, a radeon 7790 with its two functions (41:00.{01}) plus one TI usb controller, (04:00.0), only the radeon gpu (41:00.0) gets passed through. The others fail with the Error: (22, 'Invalid argument') message. Specifically:

When passing the usb controller (04:00.0) only, I find the following in xend.log:

[2013-05-01 10:38:32 2568] DEBUG (XendDomainInfo:811) XendDomainInfo.hvm_pci_device_insert_dev: 0000:04:00.0@100,msitranslate=1,power_mgmt=1
[2013-05-01 10:38:32 2568] DEBUG (XendDomainInfo:815) pci: assign device 0000:04:00.0@100,msitranslate=1,power_mgmt=1
[2013-05-01 10:38:32 2568] DEBUG (image:508) signalDeviceModel: orig_state is None, retrying
[2013-05-01 10:38:32 2568] DEBUG (image:508) signalDeviceModel: orig_state is None, retrying
[2013-05-01 10:38:32 2568] DEBUG (image:508) signalDeviceModel: orig_state is None, retrying
[2013-05-01 10:38:32 2568] DEBUG (image:508) signalDeviceModel: orig_state is None, retrying
[2013-05-01 10:38:32 2568] INFO (image:538) signalDeviceModel:restore dm state to running
[2013-05-01 10:38:32 2568] INFO (pciquirk:92) NO quirks found for PCI device [104c:8241:0000:0000]
[2013-05-01 10:38:32 2568] DEBUG (pciquirk:135) Permissive mode NOT enabled for PCI device [104c:8241:0000:0000]
[2013-05-01 10:38:32 2568] DEBUG (pciif:334) pci: enabling iomem 0xdfef0000/0x10000 pfn 0xdfef0/0x10
[2013-05-01 10:38:32 2568] DEBUG (pciif:334) pci: enabling iomem 0xdfeee000/0x2000 pfn 0xdfeee/0x2
[2013-05-01 10:38:32 2568] DEBUG (pciif:351) pci: enabling irq 19
[2013-05-01 10:38:32 2568] ERROR (XendDomainInfo:2927) XendDomainInfo.initDomain: exception occurred
Traceback (most recent call last):
File "/usr/lib/xen-4.1/bin/../lib/python/xen/xend/XendDomainInfo.py", line 2914, in _initDomain
    self._createDevices()
File "/usr/lib/xen-4.1/bin/../lib/python/xen/xend/XendDomainInfo.py", line 2395, in _createDevices
    self.pci_device_configure_boot()
File "/usr/lib/xen-4.1/bin/../lib/python/xen/xend/XendDomainInfo.py", line 627, in pci_device_configure_boot
    self.pci_device_configure(dev_sxp, first_dev = first)
File "/usr/lib/xen-4.1/bin/../lib/python/xen/xend/XendDomainInfo.py", line 970, in pci_device_configure
    devid = self._createDevice('pci', existing_pci_conf)
File "/usr/lib/xen-4.1/bin/../lib/python/xen/xend/XendDomainInfo.py", line 2326, in _createDevice
    return self.getDeviceController(deviceClass).createDevice(devConfig)
File "/usr/lib/xen-4.1/bin/../lib/python/xen/xend/server/DevController.py", line 67, in createDevice
    self.setupDevice(config)
File "/usr/lib/xen-4.1/bin/../lib/python/xen/xend/server/pciif.py", line 453, in setupDevice
    self.setupOneDevice(d)
File "/usr/lib/xen-4.1/bin/../lib/python/xen/xend/server/pciif.py", line 353, in setupOneDevice
    allow_access = True)
Error: (22, 'Invalid argument')

Interestingly, if I try to pass through only the GPU only (41:00.0) it does work, but with both functions of the radeon card passed it fails again. As said, it fails also if I only pass the USB controller, so it's not really VGA related. I can provide more log output if needed.

According to various sources on the net, downgrading xen would solve the problem. But I'd prefer to raise the issue and find out if it is a xen bug or a hardware specification issue.

Regards,
Andreas

[Xen-users] PCI passthrough problems after legacy update of xen 4.1