El 29/09/2010, a las 10:56, Sebastian Hetze escribió:
> On Tue, Sep 28, 2010 at 10:27:18AM +0200, Inigo Losada wrote:
>> We are using pci passthrough with an SCSI Adapter card. The system is:
>>
>> - O.S: Ubuntu 10.04.1 LTS
>> - KVM Packages:
>>
>> kvm 1:84+dfsg-0ubuntu16+0.12.3+noroms+0ubuntu9.2
>> kvm-pxe 5.4.4-1ubuntu1
>> qemu-kvm 0.12.3+noroms-0ubuntu9.2
>> libvirt-bin 0.7.5-5ubuntu27.2
>> python-libvirt 0.7.5-5ubuntu27.2
>> libvirt0 0.7.5-5ubuntu27.2
>>
>> - Kernel 2.6.32.15+drm33.5.iommu recompiled with following options :
>>
>> CONFIG_DMAR=y
>> CONFIG_INTR_REMAP=y
>>
>> - Apparmor is stopped
>>
>> When we started the virtual machine we obtain the following error:
>>
>> char device redirected to /dev/pts/3
>> device: 04:04.0: driver="pci-assign" host="04:04.0"
>> Failed to assign irq for "04:04.0": Operation not permitted
>> Perhaps you are assigning a device that shares an IRQ with another device?
>
> So do you?
>
> The notes in
> http://www.linux-kvm.org/page/How_to_assign_devices_with_VT-d_in_KVM
> give you this information:
>
> * VT-d spec specifies that all conventional PCI devices behind a
> * PCIe-to PCI/PCI-X bridge or conventional PCI bridge can only be
> * collectively assigned to the same guest. PCIe devices do not have
> * this restriction.
> * If the device doesn't support MSI, and it shares IRQ with other
> * devices, then it cannot be assigned due to host irq sharing for
> * assigned devices is not supported. You will get warning message
> * when you assign it. Notice this also apply to the devices which
> * only support MSI-X.
>
> What do you find in /proc/interrupts ?
>
cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3 CPU4 CPU5
CPU6 CPU7
0: 1000831147 0 0 0 0 0
0 0 IR-IO-APIC-edge timer
1: 90 0 0 0 0 0
0 0 IR-IO-APIC-edge i8042
3: 2 0 0 0 0 0
0 0 IR-IO-APIC-edge
4: 2 0 0 0 0 0
0 0 IR-IO-APIC-edge
8: 1 0 0 0 0 0
0 0 IR-IO-APIC-edge rtc0
9: 0 0 0 0 0 0
0 0 IR-IO-APIC-fasteoi acpi
12: 135 300 0 0 0 0
0 0 IR-IO-APIC-edge i8042
16: 0 0 0 0 0 0
0 0 IR-IO-APIC-fasteoi uhci_hcd:usb3
18: 2 0 0 0 0 0
0 0 IR-IO-APIC-fasteoi ehci_hcd:usb1, uhci_hcd:usb8
19: 0 0 0 0 0 0
0 0 IR-IO-APIC-fasteoi ata_piix, ata_piix, uhci_hcd:usb5,
uhci_hcd:usb7
21: 31 0 0 0 0 0
0 0 IR-IO-APIC-fasteoi uhci_hcd:usb4
23: 93 0 0 21758350 0 0
0 0 IR-IO-APIC-fasteoi ehci_hcd:usb2, uhci_hcd:usb6
26: 157 0 317 0 0 0
0 0 IR-IO-APIC-fasteoi
30: 4437 6102626 0 0 0 0
0 0 IR-IO-APIC-fasteoi 3w-9xxx
48: 0 0 0 0 0 0
0 0 DMAR_MSI-edge dmar0
55: 0 0 0 0 0 0
0 0 IR-PCI-MSI-edge eth0
56: 28 0 4148662 0 12 22
70 0 IR-PCI-MSI-edge eth0-TxRx-0
57: 29 0 0 2495606 0 0
0 0 IR-PCI-MSI-edge eth0-TxRx-1
58: 21 2704034 0 0 13 10
0 0 IR-PCI-MSI-edge eth0-TxRx-2
59: 26 0 0 0 0 0
0 1838420 IR-PCI-MSI-edge eth0-TxRx-3
60: 51 0 0 0 0 0
8249009 0 IR-PCI-MSI-edge eth0-TxRx-4
61: 1531450 0 0 0 10 0
0 0 IR-PCI-MSI-edge eth0-TxRx-5
62: 44 0 0 0 0 2176663
0 0 IR-PCI-MSI-edge eth0-TxRx-6
63: 24 0 0 0 1359843 0
0 0 IR-PCI-MSI-edge eth0-TxRx-7
91: 3 0 0 0 0 0
0 0 IR-PCI-MSI-edge ioat-msix
92: 3 0 0 0 0 0
0 0 IR-PCI-MSI-edge ioat-msix
93: 3 0 0 0 0 0
0 0 IR-PCI-MSI-edge ioat-msix
94: 3 0 0 0 0 0
0 0 IR-PCI-MSI-edge ioat-msix
95: 3 0 0 0 0 0
0 0 IR-PCI-MSI-edge ioat-msix
96: 3 0 0 0 0 0
0 0 IR-PCI-MSI-edge ioat-msix
97: 3 0 0 0 0 0
0 0 IR-PCI-MSI-edge ioat-msix
98: 3 0 0 0 0 0
0 0 IR-PCI-MSI-edge ioat-msix
NMI: 0 0 0 0 0 0
0 0 Non-maskable interrupts
LOC: 550286961 678566029 748548019 733777570 517827192 430331367
268714238 527520322 Local timer interrupts
SPU: 0 0 0 0 0 0
0 0 Spurious interrupts
PMI: 0 0 0 0 0 0
0 0 Performance monitoring interrupts
PND: 0 0 0 0 0 0
0 0 Performance pending work
RES: 73223541 59311048 49506524 42871500 37975243 32106528
31106285 27747552 Rescheduling interrupts
CAL: 2206175 1509174 2056330 1638734 1690520 1739439
1196679 985504 Function call interrupts
TLB: 3277203 2666047 3158856 2614034 2243049 2215414
1477134 1538333 TLB shootdowns
TRM: 0 0 0 0 0 0
0 0 Thermal event interrupts
THR: 0 0 0 0 0 0
0 0 Threshold APIC interrupts
MCE: 0 0 0 0 0 0
0 0 Machine check exceptions
MCP: 2591 2591 2591 2591 2591 2591
2591 2591 Machine check polls
ERR: 7
MIS: 0
But I do not see the Adaptec card (yes with lspci):
04:04.0 SCSI storage controller: Adaptec ASC-29320ALP U320 (rev ff)
Regards,
Inigo
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