PCI passthrough : GPU not work (#18204)

[svj]

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ModEdit; related ticket: #18204: PCI passthrough :invalid region

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Host: debian 9 amd64

CPU: AMD

Virtualbox: 5.2.22-126460~Debian~stretch, 6.0.0-127566~Debian~stretch

Guest: win7 64-bit

PCI passthrough : AMD GPU

lspci -vv -s1e:00.0

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1e:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Device 687f (rev c1) (prog-if 00 [VGA controller])
        Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Device 6b76
        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 41
        Region 0: Memory at e0000000 (64-bit, prefetchable) [size=256M]
        Region 2: Memory at f0000000 (64-bit, prefetchable) [size=2M]
        Region 4: I/O ports at f000 [size=256]
        Region 5: Memory at f7800000 (32-bit, non-prefetchable) [size=512K]
        [virtual] Expansion ROM at f7880000 [disabled] [size=128K]
...

Second GPU: (not passthrough)

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1b:00.0 VGA compatible controller: NVIDIA Corporation GP108 

dmesg

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[10178.205401] vboxpci: detected device: 1002:687f at 1e:00.0, driver <none>
[10178.205458] pci-stub 0000:1e:00.0: claimed by stub
[10178.205486] vboxPciFileWrite: error -19
[10178.205560] vboxpci 0000:1e:00.0: vboxPciOsDevInit
[10178.205665] vboxpci 0000:1e:00.0: region 0: mmio e0000000+268435456
[10178.205668] vboxpci 0000:1e:00.0: region 2: mmio f0000000+2097152
[10178.205671] vboxpci 0000:1e:00.0: region 4: pio f000+256
[10178.205673] vboxpci 0000:1e:00.0: region 5: mmio f7800000+524288
[10178.205676] vboxpci 0000:1e:00.0: region 6: mmio f7880000+131072
[10178.205697] vboxpci 0000:1e:00.0: got irq 94
[10179.615799] vboxpci: created IOMMU domain ffff8a6575448a20
[10179.667123] vboxpci 0000:1e:00.0: PCIRAW_POWER_ON
[10179.667134] vboxpci 0000:1e:00.0: pci_reset_function() failed
[10179.667182] vboxpci 0000:1e:00.0: attached to IOMMU
[10179.673069] vboxpci 0000:1e:00.0: invalid region 5
[10179.673119] vboxpci 0000:1e:00.0: reg=0 start=e0000000 size=268435456
[10179.677495] vboxpci 0000:1e:00.0: invalid region 2
[10185.325467] vboxpci 0000:1e:00.0: reg=0 start=e0000000 size=268435456
[10185.327882] vboxpci 0000:1e:00.0: invalid region 2
[10185.327885] vboxpci 0000:1e:00.0: invalid region 5
[10186.596095] vboxpci: freeing IOMMU domain ffff8a699a958c20
[10187.832128] vboxpci 0000:1e:00.0: reg=0 start=e0000000 size=268435456
[10187.836709] vboxpci 0000:1e:00.0: invalid region 2
[10187.836714] vboxpci 0000:1e:00.0: invalid region 5
[10215.836023] vboxpci 0000:1e:00.0: PCIRAW_POWER_OFF
[10215.836071] vboxpci 0000:1e:00.0: detached from IOMMU
[10215.898276] traps: EMT-0[7904] general protection ip:7f1f36e5e1bf sp:7f1f6cff2db0 error:0
[10215.898284]  in VBoxPciRawR3.so[7f1f36e5b000+c000]
[10216.035409] vboxpci 0000:1e:00.0: freeing irq 94
[10216.035428] vboxpci 0000:1e:00.0: vboxPciOsDevDeinit
[10216.035612] vboxpci: freeing IOMMU domain ffff8a6575448a20
[10219.287799] vboxpci: created IOMMU domain ffff8a6a1c90cc20

"invalid region" bug is reported as ticket #18204 and i found solution. But the GPU still not work.

uname -r

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4.9.0-8-amd64

in dmesg it two another error

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 vboxPciFileWrite: error -19

and

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vboxpci 0000:1e:00.0: pci_reset_function() failed

Any advice?

[socratis]

Just so that you know...

I know of only ONE (1) person that has managed to do it. And he was so well versed into VirtualBox that he was using his own source code tree with his own patches (not for the PCI passthrough to work though). And even he said there were no real benefits. That was several years ago.

I'm just saying that if you don't get too many replies (if any) don't get disappointed, it's just that people haven't managed to make it work successfully...