checking @ source,
...
 # Test whether the device is owned by pciback or pci-stub.
 try:
 pci_device = PciDevice(new_dev)
 except Exception, e:
 raise VmError("pci: failed to locate device and "+
 "parse its resources - "+str(e))
 if pci_device.driver!='pciback' and pci_device.driver!='pci-stub':
 raise VmError(("pci: PCI Backend and pci-stub don't own device %s")\
 %pci_device.name)
...
verifying the device is being seized @ startup; looks not to be :-/
...
dmesg | egrep "4:06|4:07|pciback"
...
[ 0.216794] PCI: .&checktime(0000,04,07,':').0 has been reserved for guest domain.
[ 0.216794] PCI: .&checktime(0000,04,06,':').0 has been reserved for guest domain.
[ 0.260161] pci .&checktime(0000,04,06,':').0: reg 10: [mem 0xfbfe0000-0xfbffffff]
[ 0.260171] pci .&checktime(0000,04,06,':').0: reg 14: [mem 0xfbfc0000-0xfbfdffff]
[ 0.260180] pci .&checktime(0000,04,06,':').0: reg 18: [io 0xec00-0xec3f]
[ 0.260214] pci .&checktime(0000,04,06,':').0: reg 30: [mem 0xfbfa0000-0xfbfbffff pref]
[ 0.260221] pci .&checktime(0000,04,06,':').0: Disabling memory decoding and
releasing memory resources.
[ 0.260262] pci .&checktime(0000,04,06,':').0: PME# supported from D0 D3hot D3cold
[ 0.260268] pci .&checktime(0000,04,06,':').0: PME# disabled
[ 0.260340] pci .&checktime(0000,04,07,':').0: reg 10: [mem 0xfbf9fc00-0xfbf9fc7f 64bit]
[ 0.260357] pci .&checktime(0000,04,07,':').0: reg 18: [mem 0xfbf90000-0xfbf97fff 64bit]
[ 0.260367] pci .&checktime(0000,04,07,':').0: reg 20: [io 0xe880-0xe88f]
[ 0.260385] pci .&checktime(0000,04,07,':').0: reg 30: [mem 0xfbf00000-0xfbf7ffff pref]
[ 0.260391] pci .&checktime(0000,04,07,':').0: Disabling memory decoding and
releasing memory resources.
[ 0.260434] pci .&checktime(0000,04,07,':').0: supports D1 D2
[ 0.273957] pci .&checktime(0000,04,07,':').0: BAR 6: assigned [mem
0xf0100000-0xf017ffff pref]
[ 0.273961] pci .&checktime(0000,04,06,':').0: BAR 0: assigned [mem 0xfbf00000-0xfbf1ffff]
[ 0.273972] pci .&checktime(0000,04,06,':').0: BAR 0: set to [mem
0xfbf00000-0xfbf1ffff] (PCI address [0xfbf00000-0xfbf1ffff]
[ 0.273977] pci .&checktime(0000,04,06,':').0: BAR 1: assigned [mem 0xfbf20000-0xfbf3ffff]
[ 0.273985] pci .&checktime(0000,04,06,':').0: BAR 1: set to [mem
0xfbf20000-0xfbf3ffff] (PCI address [0xfbf20000-0xfbf3ffff]
[ 0.273991] pci .&checktime(0000,04,06,':').0: BAR 6: assigned [mem
0xf0180000-0xf019ffff pref]
[ 0.273995] pci .&checktime(0000,04,07,':').0: BAR 2: assigned [mem
0xfbf40000-0xfbf47fff 64bit]
[ 0.274008] pci .&checktime(0000,04,07,':').0: BAR 2: set to [mem
0xfbf40000-0xfbf47fff 64bit] (PCI address [0xfbf40000-0xfbf47fff]
[ 0.274013] pci .&checktime(0000,04,07,':').0: BAR 0: assigned [mem
0xfbf48000-0xfbf4807f 64bit]
[ 0.274026] pci .&checktime(0000,04,07,':').0: BAR 0: set to [mem
0xfbf48000-0xfbf4807f 64bit] (PCI address [0xfbf48000-0xfbf4807f]
[ 5.562894] sata_sil24 .&checktime(0000,04,07,':').0: version 1.1
[ 5.562913] sata_sil24 .&checktime(0000,04,07,':').0: enabling device (019d -> 019f)
[ 5.562933] sata_sil24 .&checktime(0000,04,07,':').0: PCI INT A -> GSI 21 (level,
low) -> IRQ 21
[ 29.932444] pciback .&checktime(0000,04,06,':').0: seizing device
[ 29.932501] pciback .&checktime(0000,04,06,':').0: enabling device (0115 -> 0117)
[ 29.932521] pciback .&checktime(0000,04,06,':').0: PCI INT A -> GSI 20 (level, low) -> IRQ 20
[ 29.932528] pciback .&checktime(0000,04,06,':').0: PCI INT A disabled
dropping back to
 uname -ri
 2.6.31.12-2-xen x86_64
the dmesg output and the DomU init results are the same ... no-go.
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