Hi all,
I downloaded the xen 3.3.0 and now testing the pci pass-through
with the NIC.
Using late binding, the pci slot 0000:08:01.0 is
assigned to pciback.
But pci related xm commands are not working.
For eg:
linux-242:/home/xen-3.3.0 # xm pci-list-assignable-devices
Unexpected error: <type 'exceptions.OSError'>
Please report to xen-devel@xxxxxxxxxxxxxxxxxxx
Traceback (most recent call last):
File "/usr/sbin/xm", line 10, in
<module>
main.main(sys.argv)
File "//usr/lib64/python/xen/xm/main.py",
line 2883, in main
_, rc = _run_cmd(cmd, cmd_name, args)
File "//usr/lib64/python/xen/xm/main.py",
line 2907, in _run_cmd
return True, cmd(args)
File "//usr/lib64/python/xen/xm/main.py",
line 2202, in xm_pci_list_assignable_devices
devs_list =
check_FLR_capability(dev_list)
File
"/usr/lib64/python2.5/xen/util/pci.py", line 288, in
check_FLR_capability
coassigned_pci_list = dev.find_coassigned_devices(True)
File
"/usr/lib64/python2.5/xen/util/pci.py", line 461, in
find_coassigned_devices
dev =
self.find_the_uppermost_pci_bridge()
File
"/usr/lib64/python2.5/xen/util/pci.py", line 424, in
find_the_uppermost_pci_bridge
dev_parent = PciDevice(dom, b, d, f)
File
"/usr/lib64/python2.5/xen/util/pci.py", line 382, in __init__
self.detect_dev_info()
File
"/usr/lib64/python2.5/xen/util/pci.py", line 604, in detect_dev_info
class_dev =
self.pci_conf_read16(PCI_CLASS_DEVICE)
File
"/usr/lib64/python2.5/xen/util/pci.py", line 567, in pci_conf_read16
fd = os.open(self.cfg_space_path,
os.O_RDONLY)
OSError: [Errno 2] No such file or directory:
'/sys/bus/pci/devices/0000:06:00.0/config'
I checked the above python scripts.
The function find_parent() in file util/pci.py, tries to
find the parent device from the file link ../../../devices/pci0000:06/0000:06:01.0/0000:08:01.0
When it sees pci0000:06, it tries to read the config space
of 0000:06:00.0 which doesn’t exist. This causes the above error.
Lspci tree is,
linux-242:/home/xen-3.3.0 # lspci -t
-+-[0000:06]-+-01.0-[0000:08]----01.0
|
+-01.1
|
+-02.0-[0000:07]--
|
\-02.1
\-[0000:00]-+-00.0
+-01.0
+-01.1
+-06.0
+-07.0
+-08.0
+-09.0-[0000:05]----07.0
+-0b.0-[0000:04]----00.0
+-0c.0-[0000:03]----00.0
+-0d.0-[0000:02]--
+-0e.0-[0000:01]--
+-18.0
+-18.1
+-18.2
+-18.3
+-19.0
+-19.1
+-19.2
\-19.3
Thanks,
Masroor
