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[Xen-bugs] [Bug 1379] New: [VT-d] failed to reassign some PCI-e NICs

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Subject: [Xen-bugs] [Bug 1379] New: [VT-d] failed to reassign some PCI-e NICs
From: bugzilla-daemon@xxxxxxxxxxxxxxxxxxx
Date: Sun, 26 Oct 2008 00:01:45 -0700
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           Summary: [VT-d] failed to reassign some PCI-e NICs
           Product: Xen
           Version: unstable
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Unspecified
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: haicheng.li@xxxxxxxxx

1st attachment is the detailed NIC pci info.

For the first time, it is successful to assign this NIC to guest. but at the
second time, it will complains as following:
Error: pci: failed to locate device and parse it's resources - ord() expected a
character, but string of length 0 found.

after this failure, command "xm pci-list-a" becomes invalid and it prints some
python related errors:
Unexpected error: exceptions.TypeError

Please report to xen-devel@xxxxxxxxxxxxxxxxxxx
Traceback (most recent call last):
  File "/usr/sbin/xm", line 10, in ?
  File "/usr/lib64/python/xen/xm/main.py", line 2884, in main
    _, rc = _run_cmd(cmd, cmd_name, args)
  File "/usr/lib64/python/xen/xm/main.py", line 2908, in _run_cmd
    return True, cmd(args)
  File "/usr/lib64/python/xen/xm/main.py", line 2200, in
    dev_list = find_all_devices_owned_by_pciback()
  File "/usr/lib64/python/xen/util/pci.py", line 247, in
    dev = PciDevice(dom, b, d, f)
  File "/usr/lib64/python/xen/util/pci.py", line 389, in __init__
  File "/usr/lib64/python/xen/util/pci.py", line 814, in get_info_from_sysfs
  File "/usr/lib64/python/xen/util/pci.py", line 773, in find_capability
    capa_pointer = ord(conf_file.read(1))
TypeError: ord() expected a character, but string of length 0 found

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