[Xen-users] debian + xen 4.4 - get iommu setup for d0 failed (-22)

[Thomas Lauer <thomas.lauer@xxxxxxxxx>]

Hello,
I have following Supermicro Server X11SSL-F and CPU XEON E3-1230v5.
After installing xen on debian jessie I get the following message during kernel 
boot time:
(...)
(XEN) Dom0 has Maximum 8 VCPUs
(XEN) [VT-D]iommu.c:1427: d0:Hostbridge: skip 0000:00:00.0 map
(XEN) [VT-D]iommu.c:1481: d0:unknown: 0000:00:13.0
(XEN) setup 0000:00:13.0 for d0 failed (-22)
(XEN) [VT-D]iommu.c:1453: d0:PCI: map 0000:00:14.0
(...) [some other PCI DEV]
(XEN) [VT-D]iommu.c:739: uimmu_enable_translation: iommu->reg = ffff82c000201000
(XEN) Scrubbing Free RAM: .
>>>REBOOT<<<
I have added kernel boot param "iommu=verbose".
Regarding to lspci, PCI DEV with address 00:13.0 ist following:
# lspci -vv -s 00:13.0
00:13.0 Non-VGA unclassified device: Intel Corporation Device a135 (rev 31)
        Subsystem: Super Micro Computer Inc Device 089a
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 0
        Interrupt: pin A routed to IRQ 11
        Region 0: Memory at df322000 (64-bit, non-prefetchable) [size=4K]
        Capabilities: [80] Power Management version 3
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA 
PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
#
# uname -a
Linux katmai 3.16.0-4-amd64 #1 SMP Debian 3.16.39-1 (2016-12-30) x86_64 
GNU/Linux
# cat /etc/debian_version
8.7
#
Can I ignore DEV 00:13.0 at boot time? Maybe with something like that as boot 
param:
iommu=ignore_00-13-0
Best regards
Thomas
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