Hi,
I'm using kvm + libvirt + pci pass-through (vfio-pci) for virtualizing
my mythtv server.
<hostdev mode='subsystem' type='pci' managed='yes'>
<driver name='vfio'/>
<source>
<address domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
</source>
<address type='pci' domain='0x0000' bus='0x02' slot='0x03'
function='0x0'/>
</hostdev>
I had no problems with my previous dvb cards at least no big known problems.
With my new dvb-s2 card (DVBSky S952 V3), the card stopped working after
recording 1 or 2 hour.
After than the dvbstream from the card is broken and I have to reload
the driver.
MythTV Log shows:
Apr 7 19:19:10 mythtv mythlogserver: mythbackend[2087]: E DVBRead
recorders/dtvrecorder.cpp:855 (FindH264Keyframes) DTVRec[1]: PES start
code not found in TS packet with PUSI set
Apr 7 19:19:12 mythtv mythlogserver: mythbackend[2087]: E DVBRead
mpeg/mpegstreamdata.cpp:364 (AssemblePSIP)
MPEGStream[1](0x7f9bd412b898): Error: offset>181, pes length & current
cannot be queried
On the kvm host the card works properly. With my old cards I got these
problems sporadically, so this was not a big deal for me.
But now it is unusable.
/proc/interrupts and lspci -vv from the kvmhost:
29: 1061275 1065204 1060158 1066001 PCI-MSI-edge
SMI_PCIE
01:00.0 Multimedia video controller: Spin Master Ltd. Device 3038 (rev 01)
Subsystem: DVBSky Device 0552
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 32 bytes
Interrupt: pin A routed to IRQ 29
Region 0: Memory at d0100000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [40] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [50] MSI: Enable+ Count=1/16 Maskable- 64bit+
Address: 00000000fee0f00c Data: 4127
Capabilities: [70] Express (v1) Endpoint, MSI 00
DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s
<64ns, L1 <1us
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
DevCtl: Report errors: Correctable- Non-Fatal- Fatal-
Unsupported-
RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop-
MaxPayload 128 bytes, MaxReadReq 512 bytes
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq-
AuxPwr- TransPend-
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s,
Latency L0 unlimited, L1 unlimited
ClockPM- Surprise- LLActRep- BwNot-
LnkCtl: ASPM Disabled; RCB 128 bytes Disabled- Retrain-
CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+
DLActive- BWMgmt- ABWMgmt-
Kernel driver in use: SMI PCIe driver
Kernel modules: smipcie
/proc/interrupts from kvmhost when the vm is started:
29: 0 0 0 0 PCI-MSI-edge
vfio-msi[0](0000:01:00.0)
/proc/interrupts and lspci -vv from the vm
25: 0 0 PCI-MSI-edge SMI_PCIE
02:03.0 Multimedia video controller: Spin Master Ltd. Device 3038 (rev 01)
Subsystem: DVBSky Device 0552
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 32 bytes
Interrupt: pin A routed to IRQ 25
Region 0: Memory at fe660000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [40] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [50] MSI: Enable+ Count=1/16 Maskable- 64bit+
Address: 00000000fee0300c Data: 41a1
Capabilities: [70] Express (v1) Endpoint, MSI 00
DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s
<64ns, L1 <1us
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
DevCtl: Report errors: Correctable- Non-Fatal- Fatal-
Unsupported-
RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop-
MaxPayload 128 bytes, MaxReadReq 512 bytes
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq-
AuxPwr- TransPend-
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s,
Latency L0 unlimited, L1 unlimited
ClockPM- Surprise- LLActRep- BwNot-
LnkCtl: ASPM Disabled; RCB 128 bytes Disabled- Retrain-
CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+
DLActive- BWMgmt- ABWMgmt-
Kernel driver in use: SMI PCIe driver
Kernel modules: smipcie
I have tried several things, all with the same result.
* Swapping PCIe Port
* using kvm-based-passthrough instead of vfio-pci
* starting qemu direct and using bus=pcie.0 ( -device
vfio-pci,host=01:00.0,id=hostdev0,bus=pcie.0,addr=0x3)
Board: Supermicro C2SBC-Q
dvb-s2: DVBSky S952 V3
System: Gentoo
Kernel: 3.19.0-gentoo (on both host and vm)
qemu: 2.1.2
libvirt: 1.2.10
Is there anything I can do to find and solve this problem?
Or is this simply a bad combination of hardware components and I will
stuck here?
Thanks
Wolfgang
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