RE: [Xen-devel] VT-D On An Asus P5E-VM DO Motherboard Not Working, Xen 3.4.1

["Han, Weidong" <weidong.han@xxxxxxxxx>]

Hi Mike,

 

Obviously your BIOS is broken. Pls contact your vendor for help.

 

Regards,

Weidong

---

From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Michael MacLeod
Sent: 2009年9月27日 4:18
To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] VT-D On An Asus P5E-VM DO Motherboard Not Working, Xen 3.4.1

I've been trying to get VT-D working with Xen and my Asus P5E-VM DO 
motherboard for the last week. This board is listed on the VTdHowTo xen wiki 
page as supported, and I've found another subscriber of the xen-users list who 
has this configuration working, which makes my predicament all the more 
odd.

I'm using debian lenny as my dom0 OS, though I've built Xen 3.4.1 
from source and can replicate this problem with both the lenny 
2.6.26-2-xen-amd64 kernel and the Xen 2.6.18-xen.hg kernel I built. I've tried 
several different BIOS revisions, and the problem is consistent across 
them.

Here's some output from my bootup and from acpidump:

# xm 
dmesg | grep -C1 VT-D
(XEN) ACPI: HPET id: 0xffffffff base: 
0xfed00000
(XEN) [VT-D]dmar.c:485: Host address width 36
(XEN) 
[VT-D]dmar.c:494: found ACPI_DMAR_DRHD
(XEN) [VT-D]dmar.c:349: 
dmaru->address = fed90000
(XEN) [VT-D]dmar.c:300: found endpoint: bdf = 
0:1b.0
(XEN) [VT-D]dmar.c:494: found ACPI_DMAR_DRHD
(XEN) 
[VT-D]dmar.c:349: dmaru->address = fed92000
(XEN) [VT-D]dmar.c:300: found 
endpoint: bdf = 0:3.0
(XEN) [VT-D]dmar.c:300: found endpoint: bdf = 
0:3.2
(XEN) [VT-D]dmar.c:300: found endpoint: bdf = 0:3.3
(XEN) 
[VT-D]dmar.c:494: found ACPI_DMAR_DRHD
(XEN) [VT-D]dmar.c:349: 
dmaru->address = fed93000
(XEN) [VT-D]dmar.c:358: found 
INCLUDE_ALL
(XEN) [VT-D]dmar.c:498: found ACPI_DMAR_RMRR
(XEN) 
[VT-D]dmar.c:300: found endpoint: bdf = 0:1d.0
(XEN) [VT-D]dmar.c:300: found 
endpoint: bdf = 0:1d.1
(XEN) [VT-D]dmar.c:300: found endpoint: bdf = 
0:1d.2
(XEN) [VT-D]dmar.c:300: found endpoint: bdf = 0:1d.7
(XEN) 
[VT-D]dmar.c:300: found endpoint: bdf = 0:1a.0
(XEN) [VT-D]dmar.c:300: found 
endpoint: bdf = 0:1a.1
(XEN) [VT-D]dmar.c:300: found endpoint: bdf = 
0:1a.2
(XEN) [VT-D]dmar.c:300: found endpoint: bdf = 0:1a.7
(XEN) 
[VT-D]dmar.c:498: found ACPI_DMAR_RMRR

(XEN) [VT-D]dmar.c:388: RMRR error: base_addr d0000000 end_address cfffffff
(XEN) Failed to parse ACPI DMAR.  Disabling VT-d.

# acpidump -t DMAR
Wrong checksum for OEMB!
Wrong 
checksum for !

# acpidump | grep -B3 -A20 DMAR
Wrong checksum for 
OEMB!
Wrong checksum for !

 @ 0xcff601b0
  0000: 00 4d 41 
52 48 01 00 00 01 f5 41 4d 49 00 00 00  .MARH.....AMI...
  0010: 4f 
45 4d 44 4d 41 52 00 01 00 00 00 4d 53 46 54  OEMDMAR.....MSFT
  
0020: 97 00 00 00 23 00 00 00 00 00 00 00 00 00 00 00  
....#...........
  0030: 00 00 18 00 00 00 00 00 00 00 d9 fe 00 00 00 
00  ................
  0040: 01 08 00 00 00 00 1b 00 00 00 28 00 00 
00 00 00  ..........(.....
  0050: 00 20 d9 fe 00 00 00 00 01 08 00 
00 00 00 03 00  . ..............
  0060: 01 08 00 00 00 00 03 02 01 
08 00 00 00 00 03 03  ................
  0070: 00 00 10 00 01 00 00 
00 00 30 d9 fe 00 00 00 00  .........0......
  0080: 01 00 58 00 00 
00 00 00 00 d0 0e 00 00 00 00 00  ..X.............
  0090: ff ff 0e 
00 00 00 00 00 01 08 00 00 00 00 1d 00  ................
  00a0: 01 
08 00 00 00 00 1d 01 01 08 00 00 00 00 1d 02  ................
  
00b0: 01 08 00 00 00 00 1d 07 01 08 00 00 00 00 1a 00  
................
  00c0: 01 08 00 00 00 00 1a 01 01 08 00 00 00 00 1a 
02  ................
  00d0: 01 08 00 00 00 00 1a 07 01 00 18 00 00 
00 00 00  ................
  00e0: 00 00 00 d0 00 00 00 00 ff ff ff 
cf 00 00 00 00  ................
  00f0: 01 00 58 00 00 00 00 00 00 
00 fe cf 00 00 00 00  ..X.............
  0100: ff ff fe cf 00 00 00 
00 01 08 00 00 00 00 1d 00  ................
  0110: 01 08 00 00 00 
00 1d 01 01 08 00 00 00 00 1d 02  ................
  0120: 01 08 00 
00 00 00 1d 07 01 08 00 00 00 00 1a 00  ................
  0130: 01 
08 00 00 00 00 1a 01 01 08 00 00 00 00 1a 02  ................
  
0140: 01 08 00 00 00 00 1a 
07                          
........

I've posted the my full xm dmesg here: http://pastebin.com/m32beff18 and you 
can find my full dmesg output here: http://pastebin.com/m74a7dc2a

The 
other user of the xen-users list (Christian Tramnitz) who has VT-D working with 
the same motherboard and BIOS revision listed this as the output he 
gets:

(XEN) [VT-D]iommu.c:722: iommu_page_fault: iommu->reg = 
ffff828bfff56000
(XEN) [VT-D]iommu.c:691: iommu_fault_status: Fault 
Overflow
(XEN) [VT-D]iommu.c:694: iommu_fault_status: Primary Pending 
Fault
(XEN) [VT-D]iommu.c:676: iommu_fault:DMA Write: 0:2.0 addr 400000000 
REASON 5 iommu->reg = ffff828bfff56000
(XEN) print_vtd_entries: iommu = 
ffff83022bde62d0 bdf = 0:2:0 gmfn = 400000
(XEN)     root_entry = 
ffff83022bdcf000
(XEN)     root_entry[0] = 224cc8001
(XEN) 
    context = ffff830224cc8000
(XEN)     context[10] = 
101_22bdb3001
(XEN)     l3 = ffff83022bdb3000
(XEN)   
  l3_index = 10
(XEN)     l3[10] = 0
(XEN)     
l3[10] not present

# acpidump | grep -B3 -A20 DMAR

Wrong checksum for OEMB
Wrong checksum for

Wrong 
checksum for OEMB!

@ 0xcf5601b0
 0000: 00 4d 41 52 40 01 00 00 01 
01 41 4d 49 00 00 00  .MAR@.....AMI...

 0010: 4f 45 4d 44 4d 41 52 00 01 00 00 00 4d 53 46 54  OEMDMAR.....MSFT
 0020: 97 00 00 00 23 00 00 00 00 00 00 00 00 00 00 00  ....#...........
 0030: 00 00 18 00 00 00 00 00 00 10 d9 fe 00 00 00 00  ................

 0040: 01 08 00 00 00 00 02 00 
00 00 18 00 00 00 00 00  ................

 0050: 00 20 d9 fe 00 00 00 00 01 08 00 00 00 00 03 00  . ..............

 0060: 00 00 10 00 01 00 00 00 00 30 d9 fe 
00 00 00 00  .........0......
 0070: 01 00 58 00 00 00 00 00 00 d0 
0e 00 00 00 00 00  ..X.............
 0080: ff ff 0e 00 00 00 00 00 
01 08 00 00 00 00 1d 00  ................
 0090: 01 08 00 00 00 00 
1d 01 01 08 00 00 00 00 1d 02  ................
 00a0: 01 08 00 00 
00 00 1d 07 01 08 00 00 00 00 1a 00  ................
 00b0: 01 08 
00 00 00 00 1a 01 01 08 00 00 00 00 1a 02  ................
 00c0: 
01 08 00 00 00 00 1a 07 01 00 20 00 00 00 00 00  .......... 
.....
 00d0: 00 00 60 cf 00 00 00 00 ff ff ff cf 00 00 00 00 
 ..`.............
 00e0: 01 08 00 00 00 00 02 00 01 00 58 00 00 00 
00 00  ..........X.....
 00f0: 00 00 5e cf 00 00 00 00 ff ff 5e cf 
00 00 00 00  ..^.......^.....
 0100: 01 08 00 00 00 00 1d 00 01 08 
00 00 00 00 1d 01  ................
 0110: 01 08 00 00 00 00 1d 02 
01 08 00 00 00 00 1d 07  ................
 0120: 01 08 00 00 00 00 
1a 00 01 08 00 00 00 00 1a 01  ................
 0130: 01 08 00 00 
00 00 1a 02 01 08 00 00 00 00 1a 07  ................

XSDT @ 
0xcf550100
Wrong checksum for !

# acpidump -t DMAR
Wrong checksum 
for OEMB
Wrong checksum for
Wrong checksum for OEMB!
Wrong checksum for 
!

I've also, on the suggestion of Christian I tried disabling USB in the 
BIOS completely, as he said that he had to do that with a different Asus 
motherboard that also supported VT-D before it would work, but that didn't 
resolve the problem for me.

Please let me know if there is anything else 
I can try or any other info I can provide. I'd be quite happy to work with a dev 
to determine the exact source of the problem and test patches, 
etc.

Thanks,
Mike
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