PCI Passthrough of 2 identical devices

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hi,

i have a small trouble with pci-passthrough.

i have a working configuration passing a tv card into the guest, all is fine and dandy.
as soon as i add my second identical card into the host i cant start the guest anymore, whether i add the second card to the guest or not. error message is identical in both cases.

message of virt-manager|virsh|libvirtd.log:
> libvirtError: internal error: Unable to reset PCI device 0000:03:00.0: internal error: Active 0000:03:01.0 devices on bus with 0000:03:00.0, not doing bus reset

the host is a plain kvm server, no services or apps whatsoever accessing the two devices.
the other guests (firewall and fileserver) do not use the cards either.

if i (soft) remove the 2nd card via
> echo -n 1 > /sys/bus/pci/devices/0000\:03\:01.0/remove
i can start the guest with the 1st card assigned.

thx for anyone looking into this.

wbr,tja..


PS:
host:
> root@father:~# lspci
> 00:00.0 Host bridge: Intel Corporation 4th Gen Core Processor DRAM Controller (rev 06)                                                                               
> 00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06)                                  
> 00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 05)                                                                      
> 00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04)                                                   
> 00:19.0 Ethernet controller: Intel Corporation Ethernet Connection I217-V (rev 05)                                                                                   
> 00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 (rev 05)                                                                   
> 00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d5)                                                          
> 00:1c.3 PCI bridge: Intel Corporation 82801 PCI Bridge (rev d5)                                                                                                      
> 00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 05)                                                                   
> 00:1f.0 ISA bridge: Intel Corporation H87 Express LPC Controller (rev 05)                                                                                            
> 00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 05)                                         
> 00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 05)                                                                       
> 02:00.0 PCI bridge: ASMedia Technology Inc. ASM1083/1085 PCIe to PCI Bridge (rev 03)                                                                                 
> 03:00.0 Multimedia controller: Philips Semiconductors SAA7146 (rev 01)                                                                                               
> 03:01.0 Multimedia controller: Philips Semiconductors SAA7146 (rev 01)                                                                                               
> root@father:~# cat /etc/lsb-release                                                                                                                                  
> DISTRIB_ID=Ubuntu                                                                                                                                                    
> DISTRIB_RELEASE=13.10                                                                                                                                                
> DISTRIB_CODENAME=saucy                                                                                                                                               
> DISTRIB_DESCRIPTION="Ubuntu 13.10"                                                                                                                                   
> root@father:~# uname -a                                                                                                                                              
> Linux father 3.11.0-18-generic #32-Ubuntu SMP Tue Feb 18 21:11:14 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux                                                            
> root@father:~# libvirtd --version
> libvirtd (libvirt) 1.1.1

guest:
> root@father:~# cat /etc/libvirt/qemu/tvBackend.xml 
> <!--
> WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE
> OVERWRITTEN AND LOST. Changes to this xml configuration should be made using:
>   virsh edit tvBackend
> or other application using the libvirt API.
> -->
> 
> <domain type='kvm'>
>   <name>tvBackend</name>
>   <uuid>f647bb10-7f9a-f94c-33b9-3d99e8e753e0</uuid>
>   <memory unit='KiB'>1048576</memory>
>   <currentMemory unit='KiB'>1048576</currentMemory>
>   <vcpu placement='static'>2</vcpu>
>   <os>
>     <type arch='x86_64' machine='pc-i440fx-1.5'>hvm</type>
>     <boot dev='hd'/>
>   </os>
>   <features>
>     <acpi/>
>     <apic/>
>     <pae/>
>   </features>
>   <clock offset='utc'/>
>   <on_poweroff>destroy</on_poweroff>
>   <on_reboot>restart</on_reboot>
>   <on_crash>restart</on_crash>
>   <devices>
>     <emulator>/usr/bin/kvm-spice</emulator>
>     <disk type='file' device='disk'>
>       <driver name='qemu' type='raw'/>
>       <source file='/kvm/tvBackend.img'/>
>       <target dev='vda' bus='virtio'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
>     </disk>
>     <disk type='block' device='cdrom'>
>       <driver name='qemu' type='raw'/>
>       <target dev='hdc' bus='ide'/>
>       <readonly/>
>       <address type='drive' controller='0' bus='1' target='0' unit='0'/>
>     </disk>
>     <controller type='usb' index='0'>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
>     </controller>
>     <controller type='pci' index='0' model='pci-root'/>
>     <controller type='ide' index='0'>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
>     </controller>
>     <interface type='bridge'>
>       <mac address='52:54:00:10:26:ec'/>
>       <source bridge='brlan'/>
>       <model type='virtio'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
>     </interface>
>     <serial type='pty'>
>       <target port='0'/>
>     </serial>
>     <console type='pty'>
>       <target type='serial' port='0'/>
>     </console>
>     <input type='mouse' bus='ps2'/>
>     <graphics type='vnc' port='-1' autoport='yes'/>
>     <video>
>       <model type='vga' vram='9216' heads='1'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
>     </video>
>     <hostdev mode='subsystem' type='pci' managed='yes'>
>       <source>
>         <address domain='0x0000' bus='0x03' slot='0x00' function='0x0'/>
>       </source>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
>     </hostdev>
>     <memballoon model='virtio'>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
>     </memballoon>
>   </devices>
> </domain>

-- 
thomas jagoditsch - tjaSoft
softWareEntwicklung - netzWerkManagement

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