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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Graphics passthru for dual-GPU cards to two domU's
If the card has two full-fledged PCI-e graphics functions, I think you can follow the link(http://wiki.xen.org/wiki/Xen_VGA_Passthrough) to do your passthru work. It depends on Intel's VT-d or AMD's IOMMU technology, so please make sure all required components are ready in your system. I think Xen's mailing list archive also has some detailed discussions about how to passthru one graphics device to the guest and what's difference compared with general PCIe device assignment. Xiantao > -----Original Message----- > From: xen-devel-bounces@xxxxxxxxxxxxx [mailto:xen-devel- > bounces@xxxxxxxxxxxxx] On Behalf Of Matthew Hook > Sent: Tuesday, February 21, 2012 12:59 PM > To: xen-devel@xxxxxxxxxxxxxxxxxxx > Subject: [Xen-devel] Graphics passthru for dual-GPU cards to two domU's > > Is it possible in Xen that with a dual GPU graphics card which appears as two > separately addressable PCI devices to pass each GPU to a separate guest? > Although I didn't think this was initially possible, VMWare supports it. > It's useful under xen for increasing virtual server density when providing > virtual desktops or similar. > Although not many Dual GPU cards are on the market at the moment, it > seems likely that Dual or Quad GPU cards will become the norm in the near > future. > > For example, I have a number of Dual GPU AMD HD Radeon 6990 card's. > I have successfully managed to passthru one of the GPU's on the card with > success. However I get a BSOD on the second one. > > I'm wondering if compiling in the VGA BIOS may help? > If so, where is a good resource on how I could do that? > > > Cards show in lspci as follows: > > 12:00.0 Display controller: ATI Technologies Inc Device 671d > 12:00.1 Audio device: ATI Technologies Inc Device aa80 > 13:00.0 VGA compatible controller: ATI Technologies Inc Device 671d > 13:00.1 Audio device: ATI Technologies Inc Device aa80 > > > ATI Technologies Inc Device aa80 > > +-07.0-[0000:0a-13]----00.0-[0000:0b-13]--+-04.0-[0000:10-13]----00.0- > [0000:11-13]--+-04.0-[0000:13]--+-00.0 > ATI Technologies Inc Device 671d > | | > | \-00.1 ATI Technologies > Inc Device aa80 > | | > \-08.0-[0000:12]--+-00.0 ATI Technologies Inc > Device 671d > | | > \-00.1 ATI Technologies Inc > Device aa80 > > > More details on the devices themselves. > > 12:00.0 Display controller: ATI Technologies Inc Device 671d > Subsystem: ATI Technologies Inc Device 1b2a > 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- > Interrupt: pin A routed to IRQ 30 > Region 0: Memory at 80000000 (64-bit, prefetchable) [disabled] > [size=256M] > Region 2: Memory at fb6c0000 (64-bit, non-prefetchable) [disabled] > [size=128K] > Region 4: I/O ports at 9000 [disabled] [size=256] > Expansion ROM at fb6a0000 [disabled] [size=128K] > Capabilities: [50] Power Management version 3 > Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA > PME(D0-,D1-,D2-,D3hot-,D3cold-) > Status: D0 PME-Enable- DSel=0 DScale=0 PME- > Capabilities: [58] Express (v2) Legacy Endpoint, MSI 00 > DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s <4us, > L1 > unlimited > 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 #8, Speed 2.5GT/s, Width x16, ASPM L0s L1, > Latency L0 > <64ns, L1 <1us > ClockPM- Suprise- LLActRep- BwNot- > LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- > CommClk- > ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- > LnkSta: Speed 2.5GT/s, Width x16, TrErr- Train- > SlotClk+ DLActive- BWMgmt- ABWMgmt- > Capabilities: [a0] Message Signalled Interrupts: Mask- 64bit+ > Queue=0/0 Enable- > Address: 0000000000000000 Data: 0000 > Capabilities: [100] Vendor Specific Information <?> > Capabilities: [150] Advanced Error Reporting <?> > Kernel driver in use: pciback > > > 13:00.0 VGA compatible controller: ATI Technologies Inc Device 671d > Subsystem: ATI Technologies Inc Device 0b2a > 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- > Interrupt: pin A routed to IRQ 30 > Region 0: Memory at 90000000 (64-bit, prefetchable) [disabled] > [size=256M] > Region 2: Memory at fb7c0000 (64-bit, non-prefetchable) [disabled] > [size=128K] > Region 4: I/O ports at a000 [disabled] [size=256] > Expansion ROM at fb7a0000 [disabled] [size=128K] > Capabilities: [50] Power Management version 3 > Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA > PME(D0-,D1-,D2-,D3hot-,D3cold-) > Status: D0 PME-Enable- DSel=0 DScale=0 PME- > Capabilities: [58] Express (v2) Legacy Endpoint, MSI 00 > DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s <4us, > L1 > unlimited > 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 #4, Speed 2.5GT/s, Width x16, ASPM L0s L1, > Latency L0 > <64ns, L1 <1us > ClockPM- Suprise- LLActRep- BwNot- > LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- > CommClk- > ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- > LnkSta: Speed 2.5GT/s, Width x16, TrErr- Train- > SlotClk+ DLActive- BWMgmt- ABWMgmt- > Capabilities: [a0] Message Signalled Interrupts: Mask- 64bit+ > Queue=0/0 Enable- > Address: 0000000000000000 Data: 0000 > Capabilities: [100] Vendor Specific Information <?> > Capabilities: [150] Advanced Error Reporting <?> > Kernel driver in use: pciback > > Matt > > _______________________________________________ > Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxx > http://lists.xensource.com/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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