[vfio-users] KVM Nvidia Passtrough Code 43 and freezes

Will Marler will at wmarler.com
Fri Aug 28 16:03:16 UTC 2015


I also have an nVidia GTX 750 Ti.

Suggestions to make it work:

1) use virt-manager rather than a direct call to qemu-system-x86_64. It's
much easier to maintain, and much less error prone. Also ...
2) ... you have to make several specific configuration changes to the VM in
order for nVidia cards to work properly. See the end of
http://vfio.blogspot.com/2015/05/vfio-gpu-how-to-series-part-4-our-first.html
for details. The instructions use virt-manager; I'm not sure what the
direct arguments to qemu-system-x86_64 would be for these changes (part of
the reason for suggesting that you use virt-manager).
3) Use fx440
4) Use Windows 10 (I got both Windows 7 & Windows 10 working; performance
in Windows 10 was *much* better).
5) I used UEFI mode. I had to use old binaries to get Windows to boot:
https://bbs.archlinux.org/viewtopic.php?pid=1518188#p1518188 . *Others
folks at vfio-users; are these still necessary?*
6) as Jonathan Panozzo said, there is no need (at least there wasn't for
me) to pass in a custom ROM.

wam

On Fri, Aug 28, 2015 at 9:49 AM, Jon Panozzo <jonp at lime-technology.com>
wrote:

> Hi Marco,
>
> A few suggestions:
>
> In your motherboard BIOS, do you have an option for primary graphics to be
> toggled between on-board and PCIe?  If so, please make sure that it’s set
> to NOT utilize the graphics device you’re trying to use with the VM.  I’ve
> seen issues with that consistently (most result in no GPU pass through at
> all, but with some hardware, it may result in what you’re experiencing).
>
> Also, are you using pci-stub to prevent the GPU from having a nouveau
> driver loaded before starting your VM?  If not, this may also impact your
> experience.
>
> I know we have several users passing through a GTX 750 without difficulty,
> and without needing to load the rom file as you are below.
>
> Hope this helps!
>
> Best Regards,
>
> Jonathan Panozzo
>
> > On Aug 28, 2015, at 10:42 AM, Marco Stagge <spiritblackdiamont at gmail.com>
> wrote:
> >
> > Hello @all,
> >
> > at first, my english is not that good :/ so sorry for wrong spelling etc
> :o
> >
> > I've tried bunches of configs and hardware with kvm and passtrough, with
> Radeon Cards there are no problems but with Nvidia ...
> > it look like its nearly impossible ... it works to Display TianoCore
> bootscreen and Windows Install etc, but after installing the driver the
> whole machine freezes and on the console i got the message "kernel:
> disabling irq #20" wich is my GTX 750 Ti.
> >
> > the strange thingy is "x-vga=off" is the only way to see something on
> the monitor(i thought it should be "on" for this)....
> >
> > I've tried this with q35 chipset and the fx440, with seabios and
> TianoCore EFI, Windows 7 and Windows 10(dont have Win8 or want it ..)
> >
> > Here my config and specs
> >
> >    /root/qemu-2.4.0/x86_64-softmmu/qemu-system-x86_64 -enable-kvm -M q35
> -m 8G -cpu host,kvm=off \
> >    -smp 8,sockets=1,cores=8,threads=1 \
> >    -vga none -k de -rtc base=localtime -realtime mlock=on \
> >    -drive if=pflash,format=raw,file=/root/OVMF-pure-efi.fd \
> >    -monitor stdio \
> >    -debugcon file:/dev/stderr -global isa-debugcon.iobase=0x402 \
> >    -device virtio-scsi-pci,id=scsi \
> >    -device
> vfio-pci,host=02:00.0,rombar=1,x-vga=off,romfile=/root/GTX-750Ti.rom \
> >    -device vfio-pci,host=02:00.1 \
> >    -device vfio-pci,host=04:00.0 \
> >    -device vfio-pci,host=00:13.0 \
> >    -device vfio-pci,host=00:13.2 \
> >    -drive file=/dev/sdb,if=virtio,cache=none,discard=on \
> >    -drive
> file=/media/syno/Programme/windows/Windows_7_SP1_DE_AIO_X64.iso,id=isocd,if=none
> \
> >    -device scsi-cd,drive=isocd \
> >    -cdrom /media/syno/Programme/Linux/virtio-win-0.1-100.iso \
> >    -usbdevice host:04b4:8328 \
> >    -global isa-fdc.driveA=
> >
> > AMD FX8350
> > ASUS M5A99X EVO
> > 32GB Kingston Value RAM
> > AMD Radeon HD6670(guest) + Nvidia GTX 750 Ti(guest) + GT520(Host)
> > SSD now 120GB(guest) + Mushkin Chronos Deluxe 60GB(guest)
> >
> > interrupts:
> >            CPU0       CPU1       CPU2       CPU3       CPU4 CPU5
>  CPU6       CPU7
> >   0:         47          0          0          0 0          0
> 0          0  IR-IO-APIC-edge      timer
> >   1:          1          0          0          0 0          0
> 0          1  IR-IO-APIC-edge      i8042
> >   8:          0          0          0          0 0          0
> 1          0  IR-IO-APIC-edge      rtc0
> >   9:          0          0          0          0 0          0
> 0          0  IR-IO-APIC-fasteoi   acpi
> >  12:          0          1          0          1 0          2
> 0          0  IR-IO-APIC-edge      i8042
> >  17:      97731     573202      44343      68863     449791 278946
>  766521     145166  IR-IO-APIC   17-fasteoi ehci_hcd:usb1,
> vfio-intx(0000:0a:00.1)
> >  18:       6667      21540       5559       6748      24441 16748
>  4959       8611  IR-IO-APIC   18-fasteoi ohci_hcd:usb8, ohci_hcd:usb10
> >  19:      22052      93315      44652      67664     119162 75922
> 85567      23549  IR-IO-APIC   19-fasteoi 0000:00:11.0
> >  22:          0          3          1          8 2          1
> 1          1  IR-IO-APIC   22-fasteoi vfio-intx(0000:00:16.0)
> >  23:      10599      70971      15651      26344      78321 47939
>  232415      36216  IR-IO-APIC   23-fasteoi vfio-intx(0000:00:16.2)
> >  27:          0          0          0          0 0          0
> 0          0  IR-PCI-MSI-edge      AMD-Vi
> >  30:        859       2247    3874003     745023 1000        739
>  1462     145680  IR-PCI-MSI-edge      eth0
> >  33:     627986    4106418       3829       6174 1615        953
> 140        156  IR-PCI-MSI-edge vfio-msi[0](0000:0a:00.0)
> >  34:         43        740         54        294         43 4483073
>    43       1708  IR-PCI-MSI-edge vfio-msix[0](0000:07:00.0)
> >  35:          2          1          1         70 6         66
> 1      22716  IR-PCI-MSI-edge vfio-msix[1](0000:07:00.0)
> >  36:         41          1          0          6 3685144          2
>   118          2  IR-PCI-MSI-edge vfio-msix[2](0000:07:00.0)
> >  37:          1          1      20027          0 39          0
> 257          1  IR-PCI-MSI-edge vfio-msix[3](0000:07:00.0)
> >  38:       2617      16082        450        755     123855 75581
> 72374      11818  IR-PCI-MSI-edge vfio-msix[0](0000:06:00.0)
> >  39:          0          0          0          0 0          0
> 0          0  IR-PCI-MSI-edge vfio-msix[1](0000:06:00.0)
> >  40:          0          0          0          0 0          0
> 0          0  IR-PCI-MSI-edge vfio-msix[2](0000:06:00.0)
> >  41:          0          0          0          0 0          0
> 0          0  IR-PCI-MSI-edge vfio-msix[3](0000:06:00.0)
> >  42:          0          0          0          0 0          0
> 0          0  IR-PCI-MSI-edge vfio-msix[4](0000:06:00.0)
> >  43:          0          0          0          0 0          0
> 0          0  IR-PCI-MSI-edge vfio-msix[5](0000:06:00.0)
> >  44:          0          0          0          0 0          0
> 0          0  IR-PCI-MSI-edge vfio-msix[6](0000:06:00.0)
> >  45:          0          0          0          0 0          0
> 0          0  IR-PCI-MSI-edge vfio-msix[7](0000:06:00.0)
> >  51:       4115       5167       5148       5828       7122 5740
> 20944       7389  IR-IO-APIC   27-fasteoi   0000:05:00.0
> >  52:          0          0          0          0 0          0
> 0          0  IR-IO-APIC   23-fasteoi 0000:08:00.0
> >  54:      70872      71659      71958      71508      71437 72232
> 75968     115521  IR-PCI-MSI-edge      nouveau
> >  56:       5738       5576       5715       5605       5551 5403
>  5792      10014  IR-PCI-MSI-edge      nouveau
> > NMI:        535        629        505        409 474        508
> 457        388   Non-maskable interrupts
> > LOC:    7873279    2105376    6840648    3347764    5748321 2139094
> 7856471    3305521   Local timer interrupts
> > SPU:          0          0          0          0 0          0
> 0          0   Spurious interrupts
> > PMI:        535        629        505        409 474        508
> 457        388   Performance monitoring interrupts
> > IWI:          0          0          0          0 0          1
> 0          0   IRQ work interrupts
> > RTR:          0          0          0          0 0          0
> 0          0   APIC ICR read retries
> > RES:   31834176   46456464   40752536   13038581   29382846 31897150
>  34234584   16740944   Rescheduling interrupts
> > CAL:       2026       1990       2018       2081       2046 1441
>  2141       2063   Function call interrupts
> > TLB:       3857       3712       3424       6321       4082 4559
>  3763       6583   TLB shootdowns
> > TRM:          0          0          0          0 0          0
> 0          0   Thermal event interrupts
> > THR:          0          0          0          0 0          0
> 0          0   Threshold APIC interrupts
> > MCE:          0          0          0          0 0          0
> 0          0   Machine check exceptions
> > MCP:         83         83         83         83 83         83
>  83         83   Machine check polls
> > HYP:          0          0          0          0 0          0
> 0          0   Hypervisor callback interrupts
> > ERR:          0
> > MIS:          0
> >
> > any ideas?
> >
> > greetings
> > Spirit
> >
> > _______________________________________________
> > vfio-users mailing list
> > vfio-users at redhat.com
> > https://www.redhat.com/mailman/listinfo/vfio-users
>
>
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