So the trace below is showing a failure during Xen boot and later you
have trouble passing through a graphics card to an HVM? Do you get
subsequent errors when starting the HVM? What is device 00:2.0 that is
causing the fault below? Reason 5 indicates a DMA write to a page where
the IOMMU PTE W bit is clear to disallow DMA writes.
Thanks
Ross
-----Original Message-----
From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Stefan Bauer
Sent: Tuesday, October 28, 2008 6:09 AM
To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] [VT-D]iommu.c:775: iommu_page_fault: iommu->reg
=ffff828bfff57000
Dear Users,
Debian Etch 2.6.18.8-xen from xensource.com with Xen 3.3.0 on AMD64.
I cant use VT-d to passthrough pci-e graphiccard to my win2000 hvm
guest:
Probably the problem is caused by that iommu errors, please see beleow:
xm dmesg
__ __ _____ _____ ___
\ \/ /___ _ __ |___ / |___ / / _ \
\ // _ \ '_ \ |_ \ |_ \| | | |
/ \ __/ | | | ___) | ___) | |_| |
/_/\_\___|_| |_| |____(_)____(_)___/
(XEN) Xen version 3.3.0 (root@) (gcc version 4.1.2 20061115
(prerelease) (Debian 4.1.1-21)) Sat Oct 25 12:58:03 CEST 2008
(XEN) Latest ChangeSet: unavailable
(XEN) Command line: console=vga max_loop=128 dom0_mem=512M iommu=1 vtd=1
(XEN) Video information:
(XEN) VGA is text mode 80x25, font 8x16
(XEN) VBE/DDC methods: none; EDID transfer time: 0 seconds
(XEN) EDID info not retrieved because no DDC retrieval method detected
(XEN) Disc information:
(XEN) Found 1 MBR signatures
(XEN) Found 1 EDD information structures
(XEN) Xen-e820 RAM map:
(XEN) 0000000000000000 - 000000000009e000 (usable)
(XEN) 000000000009e000 - 00000000000a0000 (reserved)
(XEN) 00000000000ce000 - 00000000000d0000 (reserved)
(XEN) 00000000000e0000 - 0000000000100000 (reserved)
(XEN) 0000000000100000 - 00000000be4b0000 (usable)
(XEN) 00000000be4b0000 - 00000000be4c9000 (ACPI data)
(XEN) 00000000be4c9000 - 00000000be4cc000 (ACPI NVS)
(XEN) 00000000be4cc000 - 00000000c0000000 (reserved)
(XEN) 00000000e0000000 - 00000000f0000000 (reserved)
(XEN) 00000000fec00000 - 00000000fec10000 (reserved)
(XEN) 00000000fee00000 - 00000000fee01000 (reserved)
(XEN) 00000000ff000000 - 0000000100000000 (reserved)
(XEN) System RAM: 3044MB (3117368kB)
(XEN) ACPI: RSDP 000F5E00, 0024 (r2 PTLTD )
(XEN) ACPI: XSDT BE4BD887, 00B4 (r1 LENOVO TC-2R 60400D0 LTP
0)
(XEN) ACPI: TCPA BE4C8AD9, 0032 (r2 LENOVO TC-2R 60400D0 PTL
0)
(XEN) ACPI: FACP BE4C8B0B, 00F4 (r3 INTEL 60400D0 PTL
3)
(XEN) ACPI: DSDT BE4C0F80, 7AE5 (r1 INTEL BEARLAKE 60400D0 MSFT
100000E)
(XEN) ACPI: FACS BE4CBFC0, 0040
(XEN) ACPI: DMAR BE4C8BFF, 0110 (r1 Intel OEMDMAR 60400D0 LOHR
1)
(XEN) ACPI: SLIC BE4C8D0F, 0176 (r1 LENOVO TC-2R 60400D0 LTP
0)
(XEN) ACPI: MCFG BE4C8E85, 003C (r1 PTLTD MCFG 60400D0 LTP
0)
(XEN) ACPI: HPET BE4C8EC1, 0038 (r1 PTLTD HPETTBL 60400D0 LTP
1)
(XEN) ACPI: APIC BE4C8EF9, 0068 (r1 PTLTD APIC 60400D0 LTP
0)
(XEN) ACPI: BOOT BE4C8F61, 0028 (r1 PTLTD $SBFTBL$ 60400D0 LTP
1)
(XEN) ACPI: ASF! BE4C8F89, 0077 (r16 CETP CETP 60400D0 PTL
1)
(XEN) ACPI: SSDT BE4BF1CA, 025F (r1 PmRef Cpu0Tst 3000 INTL
20050228)
(XEN) ACPI: SSDT BE4BF124, 00A6 (r1 PmRef Cpu7Tst 3000 INTL
20050228)
(XEN) ACPI: SSDT BE4BF07E, 00A6 (r1 PmRef Cpu6Tst 3000 INTL
20050228)
(XEN) ACPI: SSDT BE4BEFD8, 00A6 (r1 PmRef Cpu5Tst 3000 INTL
20050228)
(XEN) ACPI: SSDT BE4BEF32, 00A6 (r1 PmRef Cpu4Tst 3000 INTL
20050228)
(XEN) ACPI: SSDT BE4BEE8C, 00A6 (r1 PmRef Cpu3Tst 3000 INTL
20050228)
(XEN) ACPI: SSDT BE4BEDE6, 00A6 (r1 PmRef Cpu2Tst 3000 INTL
20050228)
(XEN) ACPI: SSDT BE4BED40, 00A6 (r1 PmRef Cpu1Tst 3000 INTL
20050228)
(XEN) ACPI: SSDT BE4BD93B, 1405 (r1 PmRef CpuPm 3000 INTL
20050228)
(XEN) Xen heap: 14MB (14688kB)
(XEN) Domain heap initialised
(XEN) Processor #0 6:15 APIC version 20
(XEN) Processor #1 6:15 APIC version 20
(XEN) IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23
(XEN) Enabling APIC mode: Flat. Using 1 I/O APICs
(XEN) Intel VT-d has been enabled
(XEN) Using scheduler: SMP Credit Scheduler (credit)
(XEN) Detected 2327.540 MHz processor.
(XEN) HVM: VMX enabled
(XEN) CPU0: Intel(R) Core(TM)2 Duo CPU E6550 @ 2.33GHz stepping 0b
(XEN) Booting processor 1/1 eip 8c000
(XEN) CPU1: Intel(R) Core(TM)2 Duo CPU E6550 @ 2.33GHz stepping 0b
(XEN) Total of 2 processors activated.
(XEN) ENABLING IO-APIC IRQs
(XEN) -> Using new ACK method
(XEN) checking TSC synchronization across 2 CPUs: passed.
(XEN) Platform timer is 14.318MHz HPET
(XEN) Brought up 2 CPUs
(XEN) I/O virtualisation enabled
(XEN) I/O virtualisation for PV guests disabled
(XEN) [VT-D]iommu.c:775: iommu_page_fault: iommu->reg = ffff828bfff57000
(XEN) [VT-D]iommu.c:744: iommu_fault_status: Fault Overflow
(XEN) [VT-D]iommu.c:729: iommu_fault:DMA Write: 0:2.0 addr 200200000
REASON 5 iommu->reg = ffff828bfff57000
(XEN) print_vtd_entries: iommu = ffff8300bd6ad180 bdf = 0:2:0 gmfn =
200200
(XEN) root_entry = ffff8300bc9e0000
(XEN) root_entry[0] = b9cd6001
(XEN) context = ffff8300b9cd6000
(XEN) context[10] = 101_be4a6001
(XEN) l3 = ffff8300be4a6000
(XEN) l3_index = 8
(XEN) l3[8] = 0
(XEN) l3[8] not present
(XEN) *** LOADING DOMAIN 0 ***
(XEN) Xen kernel: 64-bit, lsb, compat32
(XEN) Dom0 kernel: 64-bit, lsb, paddr 0x200000 -> 0x52fecc
(XEN) PHYSICAL MEMORY ARRANGEMENT:
(XEN) Dom0 alloc.: 00000000b8000000->00000000b9000000 (126976 pages
to be allocated)
(XEN) VIRTUAL MEMORY ARRANGEMENT:
(XEN) Loaded kernel: ffffffff80200000->ffffffff8052fecc
(XEN) Init. ramdisk: ffffffff80530000->ffffffff80a98c00
(XEN) Phys-Mach map: ffffffff80a99000->ffffffff80b99000
(XEN) Start info: ffffffff80b99000->ffffffff80b994a4
(XEN) Page tables: ffffffff80b9a000->ffffffff80ba5000
(XEN) Boot stack: ffffffff80ba5000->ffffffff80ba6000
(XEN) TOTAL: ffffffff80000000->ffffffff81000000
(XEN) ENTRY ADDRESS: ffffffff80200000
(XEN) Dom0 has maximum 2 VCPUs
(XEN) Scrubbing Free RAM: ........................done.
(XEN) Xen trace buffers: disabled
(XEN) Std. Loglevel: Errors and warnings
(XEN) Guest Loglevel: Nothing (Rate-limited: Errors and warnings)
(XEN) Xen is relinquishing VGA console.
(XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch
input to Xen)
(XEN) Freed 108kB init memory.
(XEN) domctl.c:635:d0 XEN_DOMCTL_test_assign_device: 1:0:0 already
assigned, or non-existent
(XEN) domctl.c:635:d0 XEN_DOMCTL_test_assign_device: 1:0:0 already
assigned, or non-existent
Help is greatly appreciated.
--
stefan
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