[libvirt-users] passthrough of PCI-device

Mon Oct 13 08:04:06 UTC 2014

Dear Michael,

Did you activate the Intel IO MMU (or its equivalent for AMD)?
Also, did you load the pci_stub module for Linux? It is mandatory (it
will replace current driver for your passed through hardware).

Cheers,
Pierre

On 10/13/2014 07:54 AM, Weis, Michael (DWIE) wrote:
> Good morning,
> 
> there is a typo in my description;
> the line
>      <address domain='0x0' bus='0x1' slot='0x00' function='0x0'/>
> should be
>      <address domain='0x0' bus='0x2' slot='0x00' function='0x0'/>
> That was correct in my xml-file.
> 
> Isn't there anybody how can help me with that?
> 
> 
> Regards
> 
>    Michael Weis
> 
> 
> 
> Von: Weis, Michael (DWIE)
> Gesendet: Dienstag, 7. Oktober 2014 11:45
> An: 'libvirt-users at redhat.com'
> Betreff: passthrough of PCI-device
> 
> Hello,
> 
> I try to passthrough a PCI-card to a VM named  testvm
> I want to do that with an xml-file named hga.xml including the following content:
> 
> <hostdev mode='subsystem' type='pci' managed='yes'>
>   <source>
>      <address domain='0x0' bus='0x1' slot='0x00' function='0x0'/>
>   </source>
> </hostdev>
> 
> When I execute
> virsh attach-device testvm hga.xml
> I get the following error:
> Fehler: Fehler beim Anhängen des Geräts von hga.xml
> (error: error while attaching device from hga.xml)
> Fehler: Interner Fehler: Kann Qemu-Befehl 'device_add' nicht ausführen: Device initialization failed.
> (error: internal error: cannot execute 'device_add':
> 
> In the syslog of the host I get the following errors:
> Oct  7 11:32:34 artemis2 journal: Interner Fehler: Kann Qemu-Befehl 'device_add' nicht ausführen: Device initialization failed.
> Oct  7 11:32:53 artemis2 kernel: ffff880220fadd10 ffffffff810f924a ffff880220fadd28 0000000000000246
> Oct  7 11:32:53 artemis2 kernel: ffff8800bd07a400 000000007265756d ffffffffa0866ee0 0000000000000000
> Oct  7 11:32:53 artemis2 kernel: Call Trace:
> Oct  7 11:32:53 artemis2 kernel: [<ffffffff815e237b>] dump_stack+0x19/0x1b
> Oct  7 11:32:53 artemis2 kernel: [<ffffffff810f924a>] __setup_irq+0x54a/0x570
> Oct  7 11:32:53 artemis2 kernel: [<ffffffffa0866ee0>] ? virqfd_wakeup+0xc0/0xc0 [vfio_pci]
> Oct  7 11:32:53 artemis2 kernel: [<ffffffff810f93cc>] request_threaded_irq+0xcc/0x170
> Oct  7 11:32:53 artemis2 kernel: [<ffffffffa0866b8a>] vfio_intx_set_signal+0x10a/0x1f0 [vfio_pci]
> Oct  7 11:32:53 artemis2 kernel: [<ffffffffa08670e8>] vfio_pci_set_intx_trigger+0xc8/0x1b0 [vfio_pci]
> Oct  7 11:32:53 artemis2 kernel: [<ffffffffa086799b>] vfio_pci_set_irqs_ioctl+0x7b/0x100 [vfio_pci]
> Oct  7 11:32:53 artemis2 kernel: [<ffffffff8115d352>] ? memdup_user+0x42/0x70
> Oct  7 11:32:53 artemis2 kernel: [<ffffffffa0865e74>] vfio_pci_ioctl+0x314/0xa00 [vfio_pci]
> Oct  7 11:32:53 artemis2 kernel: [<ffffffff81194b6a>] ? kmem_cache_alloc+0x1ba/0x1d0
> Oct  7 11:32:53 artemis2 kernel: [<ffffffff811b156c>] ? get_empty_filp+0x5c/0x190
> Oct  7 11:32:53 artemis2 kernel: [<ffffffff811f1891>] ? fsnotify+0x251/0x350
> Oct  7 11:32:53 artemis2 kernel: [<ffffffff81251806>] ? security_file_alloc+0x16/0x20
> Oct  7 11:32:53 artemis2 kernel: [<ffffffff811b15a0>] ? get_empty_filp+0x90/0x190
> Oct  7 11:32:53 artemis2 kernel: [<ffffffffa084f163>] vfio_device_fops_unl_ioctl+0x23/0x30 [vfio]
> Oct  7 11:32:53 artemis2 kernel: [<ffffffff811c2af5>] do_vfs_ioctl+0x2e5/0x4c0
> Oct  7 11:32:53 artemis2 kernel: [<ffffffff811af780>] ? vfs_write+0x160/0x1e0
> Oct  7 11:32:53 artemis2 kernel: [<ffffffff811c2d71>] SyS_ioctl+0xa1/0xc0
> Oct  7 11:32:53 artemis2 kernel: [<ffffffff815f2a59>] system_call_fastpath+0x16/0x1b
> Oct  7 11:32:53 artemis2 journal: Interner Fehler: Kann Qemu-Befehl 'device_add' nicht ausführen: Device initialization failed.
> 
> My version-information:
> OS: CentOS Linux release 7.0.1406 (Core)
> Kernel: Linux artemis2 3.10.0-123.8.1.el7.x86_64
> libvirt-daemon-driver-secret-1.2.8-1.el7.centos.x86_64
> libvirt-1.2.8-1.el7.centos.x86_64
> libvirt-daemon-kvm-1.2.8-1.el7.centos.x86_64
> libvirt-client-1.2.8-1.el7.centos.x86_64
> libvirt-daemon-driver-qemu-1.2.8-1.el7.centos.x86_64
> libvirt-daemon-config-network-1.2.8-1.el7.centos.x86_64
> libvirt-daemon-driver-interface-1.2.8-1.el7.centos.x86_64
> libvirt-daemon-1.2.8-1.el7.centos.x86_64
> libvirt-daemon-driver-nodedev-1.2.8-1.el7.centos.x86_64
> libvirt-daemon-driver-storage-1.2.8-1.el7.centos.x86_64
> libvirt-daemon-config-nwfilter-1.2.8-1.el7.centos.x86_64
> libvirt-daemon-driver-network-1.2.8-1.el7.centos.x86_64
> libvirt-daemon-driver-lxc-1.2.8-1.el7.centos.x86_64
> libvirt-daemon-driver-nwfilter-1.2.8-1.el7.centos.x86_64
> 
> The PCI-Card I want to passthrough:
> 02:00.0 Ethernet controller: PLX Technology, Inc. Device 235e
>         Subsystem: PLX Technology, Inc. Device 235e
>         Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
>         Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
>         Interrupt: pin A routed to IRQ 16
>         Region 0: Memory at f0810000 (32-bit, non-prefetchable) [disabled] [size=256]
>         Region 1: I/O ports at e000 [disabled] [size=256]
>         Region 2: Memory at e0000000 (32-bit, non-prefetchable) [disabled] [size=256M]
>         Region 3: Memory at f0000000 (32-bit, non-prefetchable) [disabled] [size=8M]
>         Expansion ROM at f0800000 [disabled] [size=64K]
>         Capabilities: [40] Power Management version 1
>                 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
>                 Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
>         Capabilities: [48] CompactPCI hot-swap <?>
>         Capabilities: [4c] Vital Product Data
>                 Unknown large resource type 35, will not decode more.
>         Kernel driver in use: vfio-pci
> 
> Please help.
> 
> 
> Best regards
> 
>    Michael Weis
> 
> 
> 
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> 
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-- 
Pierre Schweitzer <pierre at reactos.org>
System & Network Administrator
Senior Kernel Developer
ReactOS Deutschland e.V.

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