http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1607
Summary: VT-d on Dell Optiplex 380
Product: Xen
Version: unstable
Platform: Other
OS/Version: n/a
Status: NEW
Severity: normal
Priority: P2
Component: Hardware Support
AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
ReportedBy: zhalassy@xxxxxxxxxx
Dell Optiplex 380 has a BIOS option, "Enable Intel® VT for Direct I/O", this
is turned on, then i removed the power cable for ~40 secs as suggested on the
wiki, turned on again, and checked the BIOS it's still on. Xen 3.4 crashes with
iommu=1, Xen 4.0 does not, but claims IOMMU Unsupported.
The Motherboard has the Intel G41 Express chipset, and has a Core2 E7500.
Does this one lack the support for VT-d, or is there some kind of workaround?
This is the output for xen 4.0:
__ __ _ _ ___ ___
\ \/ /___ _ __ | || | / _ \ / _ \
\ // _ \ '_ \ | || |_| | | | | | |
/ \ __/ | | | |__ _| |_| | |_| |
/_/\_\___|_| |_| |_|(_)___(_)___/
(XEN) Xen version 4.0.0 (root@xxxxxxxxxxxxxxxx) (gcc version 4.3.4 (Gentoo
4.3.4 p1.1, pie-10.1.5) ) Mon May 3 09:51:58 CEST 2010
(XEN) Latest ChangeSet: unavailable
(XEN) Command line: iommu=1,verbose
(XEN) Video information:
(XEN) VGA is text mode 80x25, font 8x16
(XEN) VBE/DDC methods: V2; EDID transfer time: 1 seconds
(XEN) Disc information:
(XEN) Found 2 MBR signatures
(XEN) Found 2 EDD information structures
(XEN) Xen-e820 RAM map:
(XEN) 0000000000000000 - 000000000009fc00 (usable)
(XEN) 00000000000f0000 - 0000000000100000 (reserved)
(XEN) 0000000000100000 - 00000000cda08c00 (usable)
(XEN) 00000000cda08c00 - 00000000cda5cc00 (ACPI NVS)
(XEN) 00000000cda5cc00 - 00000000cda5ec00 (ACPI data)
(XEN) 00000000cda5ec00 - 00000000d0000000 (reserved)
(XEN) 00000000e0000000 - 00000000f0000000 (reserved)
(XEN) 00000000fec00000 - 00000000fed00400 (reserved)
(XEN) 00000000fed20000 - 00000000feda0000 (reserved)
(XEN) 00000000fee00000 - 00000000fef00000 (reserved)
(XEN) 00000000ffb00000 - 0000000100000000 (reserved)
(XEN) 0000000100000000 - 000000012c000000 (usable)
(XEN) ACPI: RSDP 000FEBF0, 0024 (r2 DELL )
(XEN) ACPI: XSDT 000FCE80, 0064 (r1 DELL B10K 15 ASL 61)
(XEN) ACPI: FACP 000FCFA8, 00F4 (r3 DELL B10K 15 ASL 61)
(XEN) ACPI: DSDT FFE9503F, 45F6 (r1 DELL dt_ex 1000 INTL 20050624)
(XEN) ACPI: FACS CDA08C00, 0040
(XEN) ACPI: SSDT FFE99756, 00AC (r1 DELL st_ex 1000 INTL 20050624)
(XEN) ACPI: APIC 000FD09C, 0092 (r1 DELL B10K 15 ASL 61)
(XEN) ACPI: BOOT 000FD12E, 0028 (r1 DELL B10K 15 ASL 61)
(XEN) ACPI: MCFG 000FD156, 003E (r1 DELL B10K 15 ASL 61)
(XEN) ACPI: HPET 000FD194, 0038 (r1 DELL B10K 15 ASL 61)
(XEN) ACPI: TCPA 000FD3F0, 0032 (r1 DELL B10K 15 ASL 61)
(XEN) ACPI: DMAR 000FD422, 00F8 (r1 DELL B10K 15 ASL 61)
(XEN) System RAM: 3967MB (4062716kB)
(XEN) Domain heap initialised
(XEN) Processor #0 7:7 APIC version 20
(XEN) Processor #1 7:7 APIC version 20
(XEN) IOAPIC[0]: apic_id 8, version 32, address 0xfec00000, GSI 0-23
(XEN) Enabling APIC mode: Flat. Using 1 I/O APICs
(XEN) [VT-D]dmar.c:679: Host address width 36
(XEN) [VT-D]dmar.c:694: found ACPI_DMAR_DRHD:
(XEN) [VT-D]dmar.c:398: dmaru->address = fedc1000
(XEN) [VT-D]dmar.c:334: endpoint: 0:1b.0
(XEN) [VT-D]dmar.c:694: found ACPI_DMAR_DRHD:
(XEN) [VT-D]dmar.c:398: dmaru->address = fedc2000
(XEN) [VT-D]dmar.c:334: endpoint: 0:2.0
(XEN) [VT-D]dmar.c:334: endpoint: 0:2.1
(XEN) [VT-D]dmar.c:694: found ACPI_DMAR_DRHD:
(XEN) [VT-D]dmar.c:398: dmaru->address = fedc4000
(XEN) [VT-D]dmar.c:411: flags: INCLUDE_ALL
(XEN) [VT-D]dmar.c:699: found ACPI_DMAR_RMRR:
(XEN) [VT-D]dmar.c:334: endpoint: 0:1d.0
(XEN) [VT-D]dmar.c:334: endpoint: 0:1d.1
(XEN) [VT-D]dmar.c:334: endpoint: 0:1d.2
(XEN) [VT-D]dmar.c:334: endpoint: 0:1d.7
(XEN) [VT-D]dmar.c:334: endpoint: 0:1a.0
(XEN) [VT-D]dmar.c:334: endpoint: 0:1a.1
(XEN) [VT-D]dmar.c:334: endpoint: 0:1a.2
(XEN) [VT-D]dmar.c:334: endpoint: 0:1a.7
(XEN) [VT-D]dmar.c:571: RMRR region: base_addr cda61000 end_address cda6ffff
(XEN) [VT-D]dmar.c:699: found ACPI_DMAR_RMRR:
(XEN) [VT-D]dmar.c:334: endpoint: 0:2.0
(XEN) [VT-D]dmar.c:334: endpoint: 0:2.1
(XEN) [VT-D]dmar.c:571: RMRR region: base_addr cdc00000 end_address cfffffff
(XEN) Using scheduler: SMP Credit Scheduler (credit)
(XEN) Detected 2926.070 MHz processor.
(XEN) Initing memory sharing.
(XEN) VMX: Supported advanced features:
(XEN) - APIC MMIO access virtualisation
(XEN) - APIC TPR shadow
(XEN) - Virtual NMI
(XEN) - MSR direct-access bitmap
(XEN) HVM: ASIDs disabled.
(XEN) HVM: VMX enabled
(XEN) xsave_init: cpu0: cntxt_max_size: 0x240 and states: 00000000:00000003
(XEN) xsave_init: using cntxt_size: 0x240 and states: 00000000:00000003
(XEN) [VT-D]iommu.c:1078: drhd->address = fedc2000 iommu->reg =
ffff82c3fff57000
(XEN) [VT-D]iommu.c:1080: cap = ffffffffffffffff ecap = ffffffffffffffff
(XEN) [VT-D]iommu.c:1086: IOMMU: unsupported
(XEN) ---- print_iommu_regs ----
(XEN) drhd->address = fedc2000
(XEN) VER = ffffffff
(XEN) CAP = ffffffffffffffff
(XEN) n_fault_reg = 100
(XEN) fault_recording_offset = 3ff0
(XEN) ECAP = ffffffffffffffff
(XEN) GCMD = ffffffff
(XEN) GSTS = ffffffff
(XEN) RTADDR = ffffffffffffffff
(XEN) CCMD = ffffffffffffffff
(XEN) FSTS = ffffffff
(XEN) FECTL = ffffffff
(XEN) FEDATA = ffffffff
(XEN) FEADDR = ffffffff
(XEN) FEUADDR = ffffffff
(XEN) I/O virtualisation disabled
(XEN) xsave_init: cpu1: cntxt_max_size: 0x240 and states: 00000000:00000003
(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) *** LOADING DOMAIN 0 ***
(XEN) Xen kernel: 64-bit, lsb, compat32
(XEN) Dom0 kernel: 64-bit, lsb, paddr 0x1000000 -> 0x19ab000
(XEN) PHYSICAL MEMORY ARRANGEMENT:
(XEN) Dom0 alloc.: 0000000124000000->0000000128000000 (960087 pages to be
allocated)
(XEN) VIRTUAL MEMORY ARRANGEMENT:
(XEN) Loaded kernel: ffffffff81000000->ffffffff819ab000
(XEN) Init. ramdisk: ffffffff819ab000->ffffffff821ab000
(XEN) Phys-Mach map: ffffea0000000000->ffffea00007732b8
(XEN) Start info: ffffffff821ab000->ffffffff821ab4b4
(XEN) Page tables: ffffffff821ac000->ffffffff821c1000
(XEN) Boot stack: ffffffff821c1000->ffffffff821c2000
(XEN) TOTAL: ffffffff80000000->ffffffff82400000
(XEN) ENTRY ADDRESS: ffffffff81000000
(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 164kB init memory.
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