Hello, I want to access this PCI card from one VM : 10:00.0 Serial controller: Moxa Technologies Co Ltd CP-132EL (2-port RS-422/485 Smart PCI Express Serial Board) This card is not handle by driver on the host kernel. When I start the VM with this command (generated vy libvirt) : LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin HOME=/ QEMU_AUDIO_DRV=none /usr/bin/kvm -name huahine -S -machine pc-i440fx-1.5,accel=kvm,usb=off -cpu SandyBridge,+pdpe1gb,+osxsave,+dca,+pcid,+pdcm,+xtpr,+tm2,+est,+smx,+vmx,+ds_cpl,+monitor,+dtes64,+pbe,+tm,+ht,+ss,+acpi,+ds,+vme,hv_relaxed -m 4096 -smp 2,sockets=2,cores=1,threads=1 -uuid efaa3133-eb5a-e9c3-5120-d6dd5e4551ca -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/huahine.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime -no-shutdown -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x4 -drive file=/dev/drbd2,if=none,id=drive-scsi0-0-0-0,format=raw,cache=none -device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bootindex=1 -drive file=/Iso/virtio-win.iso,if=none,id=drive-ide0-1-0,readonly=on,format=raw -device ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev tap,fd=23,id=hostnet0 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:1f:ba:4e,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -device usb-tablet,id=input0 -vnc 127.0.0.1:2 -k fr -vga std -device pci-assign,configfd=24,host=2a:00.3,id=hostdev0,bus=pci.0,addr=0x6 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 I get this error message : qemu-system-x86_64: -device pci-assign,configfd=24,host=2a:00.3,id=hostdev0,bus=pci.0,addr=0x6: No IOMMU found. Unable to assign device "hostdev0" qemu-system-x86_64: -device pci-assign,configfd=24,host=2a:00.3,id=hostdev0,bus=pci.0,addr=0x6: Device initialization failed. qemu-system-x86_64: -device pci-assign,configfd=24,host=2a:00.3,id=hostdev0,bus=pci.0,addr=0x6: Device 'kvm-pci-assign' could not be initialized 2013-06-11 16:01:15.131+0000: shutting down I check in the BIOS and all virtualization technologie seems to be enable. If I grep IOMMU in the bootlog of the server (I don't know if it's related or not), I see this : messages.1:Jun 11 14:22:54 futuna kernel: [ 0.028041] IOMMU 0: reg_base_addr fbdfe000 ver 1:0 cap d2078c106f0462 ecap f020fe messages.1:Jun 11 14:22:54 futuna kernel: [ 0.028049] IOMMU 1: reg_base_addr f4ffe000 ver 1:0 cap d2078c106f0462 ecap f020fe Any idea to debug this ? David. -- 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
