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 -- 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
