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[Xen-users] Is Xen VGA Passthrough to CentOS 6.3 x86-64 HVM domU successful?


I have just passed through my NVIDIA Geforce GTX 560 to CentOS 6.3 x86-64 HVM domU. I am wondering whether the Xen VGA Passthrough is successful.

The following information is obtained from inside CentOS 6.3 x86-64 HVM domU:

00:05.0 VGA compatible controller: NVIDIA Corporation GF114 [GeForce GTX 560] (rev a1) (prog-if 00 [VGA controller])
    Subsystem: Giga-byte Technology Device 3527
    Physical Slot: 5
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: 64
    Interrupt: pin A routed to IRQ 36
    Region 0: Memory at dc000000 (32-bit, non-prefetchable) [size=32M]
    Region 1: Memory at d0000000 (64-bit, prefetchable) [size=128M]
    Region 3: Memory at d8000000 (64-bit, prefetchable) [size=64M]
    Region 5: I/O ports at e000 [size=128]
    [virtual] Expansion ROM at f1080000 [disabled] [size=512K]
    Capabilities: [60] 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: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
        Address: 0000000000000000  Data: 0000
    Capabilities: [78] Express (v1) Endpoint, MSI 00
DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <4us, L1 <64us
            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 x16, ASPM L0s L1, Latency L0 <256ns, L1 <4us
            ClockPM+ Surprise- 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: [b4] Vendor Specific Information <?>
    Kernel driver in use: nouveau
    Kernel modules: nvidia, nouveau, nvidiafb

[root@centos63 ~]# lsmod | grep nouveau
nouveau               791165  2
ttm                    82562  1 nouveau
drm_kms_helper         34122  1 nouveau
drm                   250067  4 nouveau,ttm,drm_kms_helper
i2c_core 31276 14 tuner_simple,tda9887,tda8290,wm8775,tuner,cx25840,pvrusb2,v4l2_common,videodev,tveeprom,i2c_piix4,nouveau,drm_kms_helper,drm
mxm_wmi                 1925  1 nouveau
video                  21032  1 nouveau
wmi                     6287  2 nouveau,mxm_wmi

Notice that the nouveau VGA driver is loaded and is in use. Is Xen VGA Passthrough 100% successful? I have successfully installed the NVIDIA driver but I couldn't get it to load, so I reverted back to the nouveau driver.

I have such tough time getting Xen VGA Passthrough to work successfully on Windows HVM domU that I am giving up on Xen VGA Passthrough to Windows HVM domU!!! Windows 7 and Windows 8 HVM domU device manager always report error code 43 with a yellow triangle. Windows XP HVM domU device manager always report error code 10 with a yellow circle.

Yours sincerely,

Mr. Teo En Ming (Zhang Enming)

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