* vfio-pci: dvb-s2 pcie card stopped working after a short time
@ 2015-04-09 13:13 Wolfgang Nothdurft
2015-04-09 15:40 ` Alex Williamson
0 siblings, 1 reply; 3+ messages in thread
From: Wolfgang Nothdurft @ 2015-04-09 13:13 UTC (permalink / raw)
To: kvm
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
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: vfio-pci: dvb-s2 pcie card stopped working after a short time
2015-04-09 13:13 vfio-pci: dvb-s2 pcie card stopped working after a short time Wolfgang Nothdurft
@ 2015-04-09 15:40 ` Alex Williamson
2015-04-09 16:16 ` Wolfgang Nothdurft
0 siblings, 1 reply; 3+ messages in thread
From: Alex Williamson @ 2015-04-09 15:40 UTC (permalink / raw)
To: Wolfgang Nothdurft; +Cc: kvm
On Thu, 2015-04-09 at 15:13 +0200, Wolfgang Nothdurft wrote:
> 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
Are you suggesting with these zero counts that interrupts aren't
working, or do they increment normally when the card is in use?
> 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?
If neither vfio-pci nor legacy kvm based assignment work reliably, then
it sounds like there's some quirkiness to this card's operation that
hasn't been figured out. Does the old card work in the same
configuration? Do the old and new cards use the same driver? Is there
any relevant dmesg output in either the host or the guest? If you can
kick the new card to work again by reloading the driver in the guest,
that would seem to indicate some lack of robustness in the driver
itself. Thanks,
Alex
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: vfio-pci: dvb-s2 pcie card stopped working after a short time
2015-04-09 15:40 ` Alex Williamson
@ 2015-04-09 16:16 ` Wolfgang Nothdurft
0 siblings, 0 replies; 3+ messages in thread
From: Wolfgang Nothdurft @ 2015-04-09 16:16 UTC (permalink / raw)
To: Alex Williamson; +Cc: kvm
Am 09.04.2015 um 17:40 schrieb Alex Williamson:
> On Thu, 2015-04-09 at 15:13 +0200, Wolfgang Nothdurft wrote:
>> 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
>
>
> Are you suggesting with these zero counts that interrupts aren't
> working, or do they increment normally when the card is in use?
>
>
>> 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?
>
> If neither vfio-pci nor legacy kvm based assignment work reliably, then
> it sounds like there's some quirkiness to this card's operation that
> hasn't been figured out. Does the old card work in the same
> configuration? Do the old and new cards use the same driver? Is there
> any relevant dmesg output in either the host or the guest? If you can
> kick the new card to work again by reloading the driver in the guest,
> that would seem to indicate some lack of robustness in the driver
> itself. Thanks,
so it's not hopeless :)
The old card works in exact this configuration, but uses an other
driver. The driver for the new card is newish and was first introduced
in 3.19. I tested the media-build driver from dvbsky with the same result.
But I was wondering, because the card was running stable with the same
driver on the bare host for days, so I thought it would be due to
virtualization.
The only relevant dmesg message is
kvm: zapping shadow pages for mmio generation wraparound
on the host when I start the vm.
One thing to mention is, that I need allow_unsafe_interrupts to get the
passthrough to work.
Thanks
Wolfgang
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2015-04-09 16:22 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2015-04-09 13:13 vfio-pci: dvb-s2 pcie card stopped working after a short time Wolfgang Nothdurft
2015-04-09 15:40 ` Alex Williamson
2015-04-09 16:16 ` Wolfgang Nothdurft
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