Hi, I'm trying to pass a second video card to a Windows 7 virtual machine with KVM, and I get the following error: " root@ubuntu-desktop:~# kvm -cpu qemu64 -hda /dev/sdb -cdrom /dev/cdrom -boot order=dc -m 2000 -usb -name Win7x64 -enable-kvm -device pci-assign,host=80:00.0 No IOMMU found. Unable to assign device "(null)" Failed to deassign device "(null)" : Invalid argument Error initializing device pci-assign " Now it look like I don't have VT-d, but I do, here is my cpuinfo: " processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 23 model name : Intel(R) Xeon(R) CPU E5440 @ 2.83GHz stepping : 10 cpu MHz : 1998.000 cache size : 6144 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 4 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 xsave lahf_lm tpr_shadow vnmi flexpriority bogomips : 5667.49 clflush size : 64 cache_alignment : 64 address sizes : 38 bits physical, 48 bits virtual power management: " ... this continues until processor reaches 7 (dual Xeon quad core) I've enabled vt-d in the BIOS, and added this parameter to the kernel: "intel_iommu=on" I've ran these to unbind the card from the host OS: " modprobe pci_stub echo "10de 040f" > /sys/bus/pci/drivers/pci-stub/new_id echo 0000:80:00.0 > /sys/bus/pci/devices/0000\:80\:00.0/driver/unbind echo 0000:80:00.0 > /sys/bus/pci/drivers/pci-stub/bind " this is the relevant part from lspci -vv (I have two video cards, one I'd like for the host and one for the guest): " 60:00.0 VGA compatible controller: nVidia Corporation G84 [Quadro FX 1700] (rev a1) Subsystem: nVidia Corporation Device 049a 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 28 Region 0: Memory at f6000000 (32-bit, non-prefetchable) [size=16M] Region 1: Memory at a0000000 (64-bit, prefetchable) [size=512M] Region 3: Memory at f4000000 (64-bit, non-prefetchable) [size=32M] Region 5: I/O ports at 2000 [size=128] Capabilities: [60] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME- Capabilities: [68] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable- Address: 0000000000000000 Data: 0000 Capabilities: [78] Express (v2) Endpoint, MSI 00 DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, L1 <4us ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset- DevCtl: Report errors: Correctable- Non-Fatal- Fatal+ Unsupported- RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop+ MaxPayload 128 bytes, MaxReadReq 512 bytes DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend- LnkCap: Port #8, Speed 5GT/s, Width x16, ASPM L0s L1, Latency L0 <512ns, L1 <4us ClockPM- Suprise- LLActRep- BwNot- LnkCtl: ASPM Disabled; RCB 128 bytes Disabled- Retrain- CommClk+ ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- LnkSta: Speed 5GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- Capabilities: [100] Virtual Channel <?> Capabilities: [128] Power Budgeting <?> Capabilities: [600] Vendor Specific Information <?> Kernel driver in use: nvidia Kernel modules: nvidia, nvidiafb 80:00.0 VGA compatible controller: nVidia Corporation G84 [Quadro FX 1700] (rev a1) Subsystem: nVidia Corporation Device 049a 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 24 Region 0: Memory at f2000000 (32-bit, non-prefetchable) [size=16M] Region 1: Memory at c0000000 (64-bit, prefetchable) [size=512M] Region 3: Memory at f0000000 (64-bit, non-prefetchable) [size=32M] Region 5: I/O ports at 1000 [size=128] Capabilities: [60] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME- Capabilities: [68] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable- Address: 0000000000000000 Data: 0000 Capabilities: [78] Express (v2) Endpoint, MSI 00 DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, L1 <4us ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset- DevCtl: Report errors: Correctable- Non-Fatal- Fatal+ Unsupported- RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop+ MaxPayload 128 bytes, MaxReadReq 512 bytes DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend- LnkCap: Port #4, Speed 5GT/s, Width x16, ASPM L0s L1, Latency L0 <512ns, L1 <4us ClockPM- Suprise- LLActRep- BwNot- LnkCtl: ASPM Disabled; RCB 128 bytes Disabled- Retrain- CommClk+ ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- LnkSta: Speed 5GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- Capabilities: [100] Virtual Channel <?> Capabilities: [128] Power Budgeting <?> Capabilities: [600] Vendor Specific Information <?> Kernel driver in use: pci-stub Kernel modules: nvidia, nvidiafb " I'm using packages from Ubuntu Lucid (10.04 alpha) [kernel 2.6.32.11-11, qemu-kvm 0.12.2-ubuntu1] I would really appreciate your help. Thank you, Yigal Korman. PS my original mail was returned because it contained html, trying to send it again with plain text. -- Due to the recession, to save on energy costs, the light at the end of the tunnel will be turned off. —God -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
