Dotaz: Ryzen 5 2400G a iGPU passtrough

[ZS-Man]

Zdravim,

chtel bych se zeptat jestli jste nekdo zkousel iGPU passtrough na Ryzen 5 2400G (integrovana RX Vega 11)? Je sance to rozchodit? Ja se o to ted pokousim na Archlinuxu a dostal jsem se k tomu ze lspci ve VM mi kartu ukaze,

05:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Raven Ridge [Radeon Vega Series / Radeon Vega Mobile Series] (rev c6)
07:00.0 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Device 15de

ale v dmesg | grep amd je toto:

[    2.298085] amdgpu 0000:05:00.0: BAR 6: can't assign [??? 0x00000000 flags 0x20000000] (bogus alignment)
[    2.313732] [drm:amdgpu_get_bios [amdgpu]] *ERROR* Unable to locate a BIOS ROM
[    2.313875] amdgpu 0000:05:00.0: Fatal error during GPU init
[    2.313962] [drm] amdgpu: finishing device.
[    2.317613] amdgpu: probe of 0000:05:00.0 failed with error -22

SPICE/VNC konsole bezi,X-ka nabehnou, ale bezi na virtualni GK a na HDMI vystupu je tma.....

V Archlinuxu jsem zkousel vychozi jadro 4.18, i testovaci 4.19 z AUR, vysedek je stejny. Predpokladam ze PCI passtrough tedy zafungoval spravne, VM ma primy pristup k GPU i Audio, ale nedokaze je inicializovat. VM je take Archlinux, jadro 4.18, zkousel jsem SeaBios i OVMF.

Mohu jeste nejak pomoci inicializaci te GPU ve VM? Nebo to s tou iGPU proste nepujde?

Pouzita deska je Asrock X470 Fatality Gaming K4, s aktualnim BIOSem.

Diky.

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Odpovědi

[SpaceExplo]

ja mam jen jednoduchej (a mozna uplne hloupej) dotaz - a kdyz tu iGPU das te VM, co bude pouzivat ten host?

[ZS-Man]

Pro hosta tam ted mam docasne jednu starickou Nvidia, ale vyhledove (kdyz bude vse fungovat) bych ji nejradeji vyhodil a pristup resil nejspis pouze pres SSH.

[panCHrz]

Před pár lety jsem si s tím také hrál (Arch + Win10 a Nvidia + Intel iGpu).Řekl bych, že budeš potřebovat min 2 Gpu. Jedině, že by jsi dokázal zapnout tu desku bez grafiky...

[SpaceExplo]

Jen pro kontrolu - zkus to obracene, tedy do te VM priradit tu nVidii, jen jestli to obecne funguje.

A jeste si zkus vypsat IOMMU skupiny.

[Peter Golis]

Nič v zlom. Ale má to CPU a tá doska podporu aj to čo sa u Intelu volá VT-D (Virtualization Direct I/O)?

[ZS-Man]

Ano ma, u AMD je to AMD-Vi, je to zapnute, IOMMU Groups vypadaji v poradku (jsou ve vlastni skupine). Takze predpoklady jsou asi v poradku, VM tu kartu vidi, jen se mu ji nepodari spravne inicializovat.....

[SpaceExplo]

Řekl bych, že bude potřeba spustit hosta naprosto headless, aby nedošlo k nahrání firmware do GPU a spuštění amdgpu modulu jádrem hosta. Tzn. spustit hosta jenom např. se sériovou konzolí, pomocí ssh spustit guesta, a pak by se vidělo.

Můžu to na 2400G vyzkoušet v pondělí na debianu, a podělit se o zkušenosti.

[ZS-Man]

Za nejakee poznatky budu urcite rad. Ja to nejdriv zkousel na proxmoxu (debian, jadro 4.15), ale tam mi kazdy pokus o spusteni VM s tim radeonem spolehlive behem minuty sestrelil celeho hosta.

[ZS-Man]

Takze trochu jsem postoupil. PCI passtrough te Nvidie Geforce 210 funguje (s ovladacem nouveau). Tady jsou IOMMU Groups:

IOMMU Group 0 00:01.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) PCIe Dummy Host Bridge [1022:1452]                                                      
IOMMU Group 1 00:01.1 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Device [1022:15d3]                                                                                                    
IOMMU Group 10 15:00.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] Device [1022:43d0] (rev 01)                                                                                      
IOMMU Group 11 15:00.1 SATA controller [0106]: Advanced Micro Devices, Inc. [AMD] Device [1022:43c8] (rev 01)                                                                                     
IOMMU Group 12 15:00.2 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Device [1022:43c6] (rev 01)                                                                                          
IOMMU Group 13 1d:00.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Device [1022:43c7] (rev 01)                                                                                           
IOMMU Group 14 1d:01.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Device [1022:43c7] (rev 01)                                                                                           
IOMMU Group 15 1d:02.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Device [1022:43c7] (rev 01)                                                                                           
IOMMU Group 16 1d:03.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Device [1022:43c7] (rev 01)                                                                                           
IOMMU Group 17 1d:04.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Device [1022:43c7] (rev 01)                                                                                            
IOMMU Group 18 1d:06.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Device [1022:43c7] (rev 01)                                                                                            
IOMMU Group 19 1d:07.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Device [1022:43c7] (rev 01)
IOMMU Group 2 00:01.2 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Device [1022:15d3]
IOMMU Group 20 1f:00.0 Ethernet controller [0200]: Intel Corporation I211 Gigabit Network Connection [8086:1539] (rev 03)
IOMMU Group 21 38:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Raven Ridge [Radeon Vega Series / Radeon Vega Mobile Series] [1002:15dd] (rev c6)
IOMMU Group 22 38:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Device [1002:15de]
IOMMU Group 23 38:00.2 Encryption controller [1080]: Advanced Micro Devices, Inc. [AMD] Device [1022:15df]
IOMMU Group 24 38:00.3 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] Device [1022:15e0]
IOMMU Group 25 38:00.4 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] Device [1022:15e1]
IOMMU Group 26 38:00.6 Audio device [0403]: Advanced Micro Devices, Inc. [AMD] Device [1022:15e3]
IOMMU Group 27 39:00.0 SATA controller [0106]: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] [1022:7901] (rev 61)
IOMMU Group 3 00:08.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) PCIe Dummy Host Bridge [1022:1452]
IOMMU Group 4 00:08.1 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Device [1022:15db]
IOMMU Group 5 00:08.2 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Device [1022:15dc]
IOMMU Group 6 00:14.0 SMBus [0c05]: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller [1022:790b] (rev 61)
IOMMU Group 6 00:14.3 ISA bridge [0601]: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge [1022:790e] (rev 51)
IOMMU Group 7 00:18.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:15e8]
IOMMU Group 7 00:18.1 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:15e9]
IOMMU Group 7 00:18.2 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:15ea]
IOMMU Group 7 00:18.3 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:15eb]
IOMMU Group 7 00:18.4 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:15ec]
IOMMU Group 7 00:18.5 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:15ed]
IOMMU Group 7 00:18.6 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:15ee]
IOMMU Group 7 00:18.7 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:15ef]
IOMMU Group 8 10:00.0 VGA compatible controller [0300]: NVIDIA Corporation GT218 [GeForce 210] [10de:0a65] (rev a2)
IOMMU Group 9 10:00.1 Audio device [0403]: NVIDIA Corporation High Definition Audio Controller [10de:0be3] (rev a1)

Pro ten Radeon jsem zmenil pouze toto:

1. v BIOSu jsem nastavil jako primarni tu dGPU (Nvidia) 2. v boot parametrech jadra jsem do vfio-pci.ids zadal ten Radeon :

GRUB_CMDLINE_LINUX_DEFAULT="iommu=pt amd_iommu=on pcie_acs_override=downstream,multifunction vfio-pci.ids=1002:15dd"

2. blacklist radeon amdgpu

3. cat /etc/modprobe.d/vfio.conf

options vfio-pci ids=1002:15de disable_vga=1

V tomto stavu VM tu kartu vidi, ale nedokaze ji inicializovat. Potom se mi konecne povedlo extrahovat vbios z toho Radeonu a ten pridat do konfigurace VM.

Pote se ten radeon obcas, ale spis hodne vyjmecne, inicializuje. Ale na HDMI vystupu je stejne porad tma.... No, pri tech pokusech jsem stejne nadelal spoustu bordelu v systemu, tak to asi pujdu nainstalovat vsechno znova nacisto.

[SpaceExplo]

Tak me napadlo, jestli nemuze byt problem v tom, ze ta iGPU vyuziva systemovou pamet, narozdil od te dGPU nVidia, ktera ma svoji vlastni.

[ZS-Man]

Tak zatim totalne bez uspechu..... Jednou nebo dvakrat se ta grafika inicializovala spravne, ovladac se nacet, dmesg byl bez chyb. Ale od te doby nic. Hlavne nevim co to bylo za kombinaci jadra a parametru, zkousel jsem to dost zivelne, a uz to dohromady nedam. Nvidia i s HDMI audio funguje, integrovana Vega ne.

Takze to zatim davam k ledu...