[Qemu-discuss] pci-assign error

[Jean Parpaillon]

Dear all,
I'm trying to assign a PCI graphic card to a qemu guest.

When I start the guest with libvirt, I have the following error in
/var/log/libvirt/qemu/sofa.log:
LC_ALL=C
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
HOME=/root USER=root LOGNAME=root QEMU_AUDIO_DRV=spice /usr/bin/kvm
-name sofa -S -M pc-1.1 -m 1500 -smp 2,sockets=2,cores=1,threads=1 -uuid
1234beef -no-user-config -nodefaults -chardev
socket,id=charmonitor,path=/var/lib/libvirt/qemu/sofa.monitor,server,nowait
-mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc
-no-shutdown -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2
-device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x5 -drive
file=/dev/vgsurcouf/sofa,if=none,id=drive-virtio-disk0,format=raw
-device
virtio-blk-pci,scsi=off,bus=pci.0,addr=0x6,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1
-drive
file=/var/lib/libvirt/images/iso/debian-testing-amd64-netinst.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,vhost=on,vhostfd=24 -device
virtio-net-pci,netdev=hostnet0,id=net0,mac=...,bus=pci.0,addr=0x3
-chardev pty,id=charserial0 -device
isa-serial,chardev=charserial0,id=serial0 -chardev
spicevmc,id=charchannel0,name=vdagent -device
virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.spice.0
-device usb-tablet,id=input0 -spice
port=5900,addr=127.0.0.1,disable-ticketing,seamless-migration=on -vga
qxl -global qxl-vga.ram_size=67108864 -global qxl-vga.vram_size=67108864
-device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device
hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device
pci-assign,host=02:00.0,id=hostdev0,configfd=25,bus=pci.0,multifunction=on,addr=0x8
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7
W: kvm binary is deprecated, please use qemu-system-x86_64 instead
char device redirected to /dev/pts/2 (label charserial0)
qemu-system-x86_64: -device
pci-assign,host=02:00.0,id=hostdev0,configfd=25,bus=pci.0,multifunction=on,addr=0x8:
Failed to assign device "hostdev0" : Operation not permitted
qemu-system-x86_64: -device
pci-assign,host=02:00.0,id=hostdev0,configfd=25,bus=pci.0,multifunction=on,addr=0x8:
Device 'kvm-pci-assign' could not be initialized
2013-04-03 09:44:35.398+0000: shutting down



My host setup: Debian Wheezy + qemu 1.4.0, libvirt 1.0.4, kernel 3.8.5
My host gfx:
 $ lspci|grep VGA
02:00.0 VGA compatible controller: NVIDIA Corporation GT218 [Quadro NVS
300] (rev a2)

I run the following to enable handle device with PCI stub, includind
second function:
echo "10de 10d8" > /sys/bus/pci/drivers/pci-stub/new_id
echo "10de 0be3" > /sys/bus/pci/drivers/pci-stub/new_id
echo 0000:02:00.0 > /sys/bus/pci/devices/0000:02:00.0/driver/unbind
echo 0000:02:00.1 > /sys/bus/pci/devices/0000:02:00.1/driver/unbind
sleep 3
echo 0000:02:00.0 > /sys/bus/pci/drivers/pci-stub/bind
echo 0000:02:00.1 > /sys/bus/pci/drivers/pci-stub/bind

Intel VT-d is enabled:
$ dmesg |grep Directed
[    1.167179] PCI-DMA: Intel(R) Virtualization Technology for Directed I/O

$ dmesg |grep IOMMU
[    0.000000] Intel-IOMMU: enabled
[    0.171520] dmar: IOMMU 0: reg_base_addr ebffe000 ver 1:0 cap
c90780106f0462 ecap f020f6
[    0.171529] dmar: IOMMU 1: reg_base_addr fedc0000 ver 1:0 cap
c90780106f0462 ecap f020f6
[    1.166855] IOMMU 0 0xebffe000: using Queued invalidation
[    1.166861] IOMMU 1 0xfedc0000: using Queued invalidation
[    1.166889] IOMMU: hardware identity mapping for device 0000:00:00.0
[    1.166891] IOMMU: hardware identity mapping for device 0000:00:03.0
[    1.166893] IOMMU: hardware identity mapping for device 0000:00:07.0
[    1.166895] IOMMU: hardware identity mapping for device 0000:00:14.0
[    1.166897] IOMMU: hardware identity mapping for device 0000:00:14.1
[    1.166898] IOMMU: hardware identity mapping for device 0000:00:14.2
[    1.166900] IOMMU: hardware identity mapping for device 0000:00:1a.0
[    1.166902] IOMMU: hardware identity mapping for device 0000:00:1a.1
[    1.166904] IOMMU: hardware identity mapping for device 0000:00:1a.7
[    1.166906] IOMMU: hardware identity mapping for device 0000:00:1b.0
[    1.166907] IOMMU: hardware identity mapping for device 0000:00:1c.0
[    1.166909] IOMMU: hardware identity mapping for device 0000:00:1c.5
[    1.166911] IOMMU: hardware identity mapping for device 0000:00:1d.0
[    1.166913] IOMMU: hardware identity mapping for device 0000:00:1d.1
[    1.166915] IOMMU: hardware identity mapping for device 0000:00:1d.2
[    1.166916] IOMMU: hardware identity mapping for device 0000:00:1d.7
[    1.166919] IOMMU: hardware identity mapping for device 0000:00:1f.0
[    1.166920] IOMMU: hardware identity mapping for device 0000:00:1f.2
[    1.166922] IOMMU: hardware identity mapping for device 0000:00:1f.3
[    1.166930] IOMMU: hardware identity mapping for device 0000:02:00.0
[    1.166932] IOMMU: hardware identity mapping for device 0000:02:00.1
[    1.166940] IOMMU: hardware identity mapping for device 0000:03:00.0
[    1.166948] IOMMU: hardware identity mapping for device 0000:04:00.0
[    1.166957] IOMMU: hardware identity mapping for device 0000:20:01.0
[    1.166958] IOMMU: hardware identity mapping for device 0000:20:03.0
[    1.166960] IOMMU: hardware identity mapping for device 0000:20:05.0
[    1.166962] IOMMU: hardware identity mapping for device 0000:20:07.0
[    1.166970] IOMMU: hardware identity mapping for device 0000:20:14.0
[    1.166972] IOMMU: hardware identity mapping for device 0000:20:14.1
[    1.166974] IOMMU: hardware identity mapping for device 0000:20:14.2
[    1.166982] IOMMU: hardware identity mapping for device 0000:23:00.0
[    1.166991] IOMMU: hardware identity mapping for device 0000:3e:00.0
[    1.166993] IOMMU: hardware identity mapping for device 0000:3e:00.1
[    1.166995] IOMMU: hardware identity mapping for device 0000:3e:02.0
[    1.166996] IOMMU: hardware identity mapping for device 0000:3e:02.1
[    1.166998] IOMMU: hardware identity mapping for device 0000:3e:02.2
[    1.167000] IOMMU: hardware identity mapping for device 0000:3e:02.3
[    1.167002] IOMMU: hardware identity mapping for device 0000:3e:02.4
[    1.167003] IOMMU: hardware identity mapping for device 0000:3e:02.5
[    1.167005] IOMMU: hardware identity mapping for device 0000:3e:03.0
[    1.167007] IOMMU: hardware identity mapping for device 0000:3e:03.1
[    1.167009] IOMMU: hardware identity mapping for device 0000:3e:03.2
[    1.167011] IOMMU: hardware identity mapping for device 0000:3e:03.4
[    1.167012] IOMMU: hardware identity mapping for device 0000:3e:04.0
[    1.167014] IOMMU: hardware identity mapping for device 0000:3e:04.1
[    1.167016] IOMMU: hardware identity mapping for device 0000:3e:04.2
[    1.167018] IOMMU: hardware identity mapping for device 0000:3e:04.3
[    1.167020] IOMMU: hardware identity mapping for device 0000:3e:05.0
[    1.167021] IOMMU: hardware identity mapping for device 0000:3e:05.1
[    1.167023] IOMMU: hardware identity mapping for device 0000:3e:05.2
[    1.167025] IOMMU: hardware identity mapping for device 0000:3e:05.3
[    1.167027] IOMMU: hardware identity mapping for device 0000:3e:06.0
[    1.167029] IOMMU: hardware identity mapping for device 0000:3e:06.1
[    1.167031] IOMMU: hardware identity mapping for device 0000:3e:06.2
[    1.167032] IOMMU: hardware identity mapping for device 0000:3e:06.3
[    1.167041] IOMMU: hardware identity mapping for device 0000:3f:00.0
[    1.167043] IOMMU: hardware identity mapping for device 0000:3f:00.1
[    1.167044] IOMMU: hardware identity mapping for device 0000:3f:02.0
[    1.167046] IOMMU: hardware identity mapping for device 0000:3f:02.1
[    1.167049] IOMMU: hardware identity mapping for device 0000:3f:02.2
[    1.167051] IOMMU: hardware identity mapping for device 0000:3f:02.3
[    1.167053] IOMMU: hardware identity mapping for device 0000:3f:02.4
[    1.167055] IOMMU: hardware identity mapping for device 0000:3f:02.5
[    1.167057] IOMMU: hardware identity mapping for device 0000:3f:03.0
[    1.167059] IOMMU: hardware identity mapping for device 0000:3f:03.1
[    1.167061] IOMMU: hardware identity mapping for device 0000:3f:03.2
[    1.167062] IOMMU: hardware identity mapping for device 0000:3f:03.4
[    1.167064] IOMMU: hardware identity mapping for device 0000:3f:04.0
[    1.167066] IOMMU: hardware identity mapping for device 0000:3f:04.1
[    1.167068] IOMMU: hardware identity mapping for device 0000:3f:04.2
[    1.167070] IOMMU: hardware identity mapping for device 0000:3f:04.3
[    1.167071] IOMMU: hardware identity mapping for device 0000:3f:05.0
[    1.167073] IOMMU: hardware identity mapping for device 0000:3f:05.1
[    1.167075] IOMMU: hardware identity mapping for device 0000:3f:05.2
[    1.167077] IOMMU: hardware identity mapping for device 0000:3f:05.3
[    1.167079] IOMMU: hardware identity mapping for device 0000:3f:06.0
[    1.167080] IOMMU: hardware identity mapping for device 0000:3f:06.1
[    1.167082] IOMMU: hardware identity mapping for device 0000:3f:06.2
[    1.167084] IOMMU: hardware identity mapping for device 0000:3f:06.3
[    1.167085] IOMMU: Setting RMRR:
[    1.167096] IOMMU: Prepare 0-16MiB unity mapping for LPC

I boot the kernel with intel_iommu=on iommu=pt


Any idea ? Should I report to libvirt ?

Best regards,
-- 
Jean Parpaillon
Open Source Consultant
Phone: +33 6 30 10 92 86
im: address@hidden
skype: jean.parpaillon
linkedin: http://www.linkedin.com/in/jeanparpaillon/en

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