vGPU to VM on 12600K

[krost]

Hi all,

I am trying to virtualize Intel iGPU for multiple VMs for media encode/decode.
I followed this guide but the GPU is only one, and not 7 like it should be:

root@pve:~# lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation AlderLake-S GT1 (rev 0c)

root@pve:~# dmesg | grep i915
[    0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-6.8.12-1-pve root=/dev/mapper/pve-root ro quiet intel_iommu=on iommu=pt i915.enable_guc=3 i915.max_vfs=7
[    0.078494] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-6.8.12-1-pve root=/dev/mapper/pve-root ro quiet intel_iommu=on iommu=pt i915.enable_guc=3 i915.max_vfs=7
               use xe.force_probe='4680' and i915.force_probe='!4680'
[    5.986058] i915: module verification failed: signature and/or required key missing - tainting kernel
[    6.149732] i915 0000:00:02.0: Running in SR-IOV PF mode
[    6.150479] i915 0000:00:02.0: [drm] VT-d active for gfx access
[    6.150499] i915 0000:00:02.0: vgaarb: deactivate vga console
[    6.150531] i915 0000:00:02.0: [drm] Using Transparent Hugepages
[    6.151148] i915 0000:00:02.0: vgaarb: VGA decodes changed: olddecodes=io+mem,decodes=io+mem:owns=io+mem
[    6.151729] mei_hdcp 0000:00:16.0-b638ab7e-94e2-4ea2-a552-d1c54b627f04: bound 0000:00:02.0 (ops i915_hdcp_ops [i915])
[    6.152835] i915 0000:00:02.0: [drm] Finished loading DMC firmware i915/adls_dmc_ver2_01.bin (v2.1)
[    6.156231] i915 0000:00:02.0: [drm] GT0: GuC firmware i915/tgl_guc_70.bin version 70.20.0
[    6.156234] i915 0000:00:02.0: [drm] GT0: HuC firmware i915/tgl_huc.bin version 7.9.3
[    6.159238] i915 0000:00:02.0: [drm] GT0: HuC: authenticated for all workloads!
[    6.159530] i915 0000:00:02.0: [drm] GT0: GUC: submission enabled
[    6.159531] i915 0000:00:02.0: [drm] GT0: GUC: SLPC enabled
[    6.159849] i915 0000:00:02.0: [drm] GuC RC: enabled
[    6.160376] mei_pxp 0000:00:16.0-fbf6fcf1-96cf-4e2e-a6a6-1bab8cbe36b1: bound 0000:00:02.0 (ops i915_pxp_tee_component_ops [i915])
[    6.160463] i915 0000:00:02.0: [drm] Protected Xe Path (PXP) protected content support initialized
[    6.183369] [drm] Initialized i915 1.6.0 20201103 for 0000:00:02.0 on minor 0
[    6.184561] i915 0000:00:02.0: 7 VFs could be associated with this PF
[    6.185013] i915 0000:00:02.0: [drm] Cannot find any crtc or sizes
[    6.185016] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
[    6.185226] i915 0000:00:02.0: [drm] Cannot find any crtc or sizes
[    7.334058] i915 0000:00:02.0: not enough MMIO resources for SR-IOV
[    7.426499] i915 0000:00:02.0: [drm] *ERROR* Failed to enable 7 VFs (-ENOMEM)
[    7.521950] i915 0000:00:02.0: not enough MMIO resources for SR-IOV
[    7.616712] i915 0000:00:02.0: [drm] *ERROR* Failed to enable 7 VFs (-ENOMEM)

Did this on a fresh install.The only thing out of place is that there's no SR-IOV in the BIOS. Vt-d is enabled and secure boot disabled, but I can't find any SR-IOV option.
This is my setup:

• CPU: 12600K
• MOBO: Gigabyte B760M Gaming X
• Proxmox VE: 8.2.4 kernel: 6.8.12-1-pve

Chances are that the mobo doesn't support SR-IOV, right?
Any ideas? Thanks!

 

[besgum]

Hi, im on the same boat, just with a Gigabyte z690 UD AX. Following the same tutorial, the thing is that i also never found the SR-IOV option. All works, I can see the 7 devices but when i try to use one it doesnt work.

Did you manage to use the igpu on a VM?