[vfio-users] Passthrough VGA on first slot

[Pedro Henrique Lara Campos]

Both Seabios and OVMF.
Turn on/off the machine? I did tried restarting it sometimes...
Attaching an QXL video I can see NVIDIA driver with the classic 43 error,
but I don't thing of it being qemu fault as when vga is in slot2 this
doesn't happen.
If I disable nvidia device and reenable it, it goes back to error 43.
Weird observation, I can eject the GTX780, and the SCSI drivers in Windows
eject tray icon....
For one last test, I uninstalled the drive in devmgmt, turned off the
machine, turned it on without QXL, waited a long time to IDK, maybe Windows
to reinstall the GPU, called "system_powerdown", ran it again in hope, but
none.

Also, should my GPU still be the "target" of vga_arbiter?
If I'm using 'options vfio-pci ids=' should I also try pci-stub?

2015-10-02 13:47 GMT-03:00 Blank Field <ihatethisfield at gmail.com>:

> Seabios? OVMF? Have you tried turining it on and off?^W^W^W^W^W
> reinstalling windows guest drivers? Attaching an emulated QXL device to see
> devmgmt.msc?
> On Oct 2, 2015 7:43 PM, "Pedro Henrique Lara Campos" <
> pedro.laracampos at gmail.com> wrote:
>
>> Yep, you both we're right, uvesafb was using GPU, now nothing besides
>> vfio is using it, yet I have no video, but there are no more mmap
>> unsupported errors, with a romcard there is no ROM error, there are also no
>> errors in AMD-Vi, qemu, IOMMU. Windows still loads fine, I can turn it off
>> through monitor, every qemu setting is identical it was when GTX was in
>> slot2 (in this slot I could see from OVMF bios until machine goes off) with
>> exception of host pci addr but in slot1 it doesn't seems to want to start
>> at all...
>>
>> 2015-10-02 10:27 GMT-03:00 Blank Field <ihatethisfield at gmail.com>:
>>
>>> Do cat /proc/iomem to find out who is using your GPU. I predict uvesafb
>>> or something like that. Disable or uninstall this.
>>> Also, don't you have pci-e 3.0 onboard?
>>> On Oct 2, 2015 4:22 PM, "Pedro Henrique Lara Campos" <
>>> pedro.laracampos at gmail.com> wrote:
>>>
>>>> Hello masters of vfio. I've been playing with vfio for 3 weeks now, and
>>>> here is a resume of what i got: When I put my loved GTX780 on the second
>>>> pci-e slot of my GA-970A-DS3P everything works on Windows (guest) while my
>>>> Linux (host) stays comfortable with a Radeon HD 6670.
>>>> But, as I wouldn't be writing this email if nothing was wrong, my
>>>> second pci-e slot is "PCIEX4" only, I believe that's because my FPS goes
>>>> down and HDMI audio keeps crackin. I had to change the slots, my bios
>>>> doesn't have an option to choose which GPU to use, so it uses the GTX, GRUB
>>>> does it too, then gpu gets binded by modprobe and I have no video until
>>>> XOrg starts on Radeon, if I start qemu, I've get:
>>>>   "vfio_ecap_init: 0000:01:00.0 hiding ecap 0x19 at 0x900"
>>>>   "BAR 3 mmap unsupported. Performance may be slow"
>>>>   "vfio-pci 0000:01:00.0: Invalid ROM contents"
>>>> No video on GTX, Windows boots normally, I can even hear notifications
>>>> sounds, I can turn it off through "system_powerdown".
>>>> Tried using a romfile, it only makes the third message goes away, no
>>>> other thing changes...
>>>>
>>>> _______________________________________________
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>>>> vfio-users at redhat.com
>>>> https://www.redhat.com/mailman/listinfo/vfio-users
>>>>
>>>>
>>
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