sriov_numvfs can not write

[ganyao114]

root@pve:# echo 6(17) > /sys/devices/pci0000:00/0000:00:02.0/sriov_numvfs
-bash: echo: write error: No such file or directory

root@pve:~# echo 8(>7) > /sys/devices/pci0000:00/0000:00:02.0/sriov_numvfs
-bash: echo: write error: Numerical result out of range

echo 0 > /sys/devices/pci0000:00/0000:00:02.0/sriov_numvfs is ok

I7 13620H
SIROV enabled
Linux pve 6.5.13-1-pve #1 SMP PREEMPT_DYNAMIC PMX 6.5.13-1

[ganyao114]

Capabilities: [320 v1] Single Root I/O Virtualization (SR-IOV)
IOVCap: Migration- 10BitTagReq- Interrupt Message Number: 000
IOVCtl: Enable- Migration- Interrupt- MSE- ARIHierarchy- 10BitTagReq-
IOVSta: Migration-
Initial VFs: 7, Total VFs: 7, Number of VFs: 0, Function Dependency Link: 00
VF offset: 1, stride: 1, Device ID: a7a8
Supported Page Size: 00000553, System Page Size: 00000001
Region 0: Memory at 000000611d000000 (64-bit, non-prefetchable)
Region 2: Memory at 0000006000000000 (64-bit, prefetchable)
VF Migration: offset: 00000000, BIR: 0

[ieiian]

I'm sure I encountered the same problem. It seems to be a problem with pve8.1, because I used pve8.0 (upgraded to pve8.1) and it was ok. I also used the 6.5.13-1-pve kernel. I hope anyone can find the problem. Please share the solution, thank you.

N100
BIOS-SIROV enabled
Linux pve 6.5.13-1-pve

[Akouniza]

If you find the solution for the iGPU passthrough, please reply :) .

Intel VT-d enabled
Linux 6.5.13-1-pve

[ieiian]

I'm sure I encountered the same problem. It seems to be a problem with pve8.1, because I used pve8.0 (upgraded to pve8.1) and it was ok. I also used the 6.5.13-1-pve kernel. I hope anyone can find the problem. Please share the solution, thank you.

N100 BIOS-SIROV enabled Linux pve 6.5.13-1-pve

Good news, I have solved this problem. My problem occurred with secure boot. If yours is the same as mine, you can try to turn off secure boot or load the DKMS key. The general process is as follows:
mokutil --import /var/lib/dkms/mok.pub (set a password)
reboot
<Startup screen operation>:
Enroll MOK, Continue, Yes, <password>, Reboot
Hope it can help friends who encounter the same problem

[iiilin]

I'm sure I encountered the same problem. It seems to be a problem with pve8.1, because I used pve8.0 (upgraded to pve8.1) and it was ok. I also used the 6.5.13-1-pve kernel. I hope anyone can find the problem. Please share the solution, thank you.
N100 BIOS-SIROV enabled Linux pve 6.5.13-1-pve

Good news, I have solved this problem. My problem occurred with secure boot. If yours is the same as mine, you can try to turn off secure boot or load the DKMS key. The general process is as follows: mokutil --import /var/lib/dkms/mok.pub (set a password) reboot : Enroll MOK, Continue, Yes, <password>, Reboot Hope it can help friends who encounter the same problem

i have the same problem. but this don't work for me. i don't enable secure boot.

[chchia]

for me it was secure boot. proxmox enabled secure boot by default now.