Update broke passthrough

[sixconfirmedthrills]

Hi,

Hardware in question: HP ProLiant DL380p G8, Intel I340-T4 Quad port NIC

It's been running perfectly fine for months, until I updated today. I carelessly updated the OS after I added the no-subscription repo (had no idea I missed that at setup, long time ago, so I sort of updated as a reaction), and now PCIe passthrough for the aforementioned NIC is somehow broken. I've tried recreating the steps I took via guides to get passthrough working, to make sure all configs were correct, but I can't seem to get it right - it all seems fine.

I'm not sure what version I was on before I updated, but I updated to 6.4. My assumption is that it has something to do with the kernel version, but I'm a novice and I'm not sure how to proceed. The error I'm getting when I try to run the guest is:

kvm: -device vfio-pci,host=0000:04:00.0,id=hostpci0,bus=pci.0,addr=0x10: failed to setup container for group 34: Failed to set iommu for container: Operation not permitted
start failed: QEMU exited with code 1

Does anyone know what may have caused this to break, giving me an idea of what to look for?

Thank you!

Edit: Autocorrect weirdness

UPDATE:
I realized the whole not-using-grub-anymore-shenanigans and updated the systemd-boot file, adding intel_iommu=on. I've also tried using the relaxed rmrr kernel, as I think this may have been part of my original setup. But still, no dice.

 

[andoniaina]

I've the same issue, and the first to check is if IOMMU is on or not on your motherboard, normally for intel VT-D option.

The way is to check first on you shell if it's ok or not, the command is: dmesg | grep -e DMAR -e IOMMU

If there is no response so try to check them first.

 

[sixconfirmedthrills]

I've the same issue, and the first to check is if IOMMU is on or not on your motherboard, normally for intel VT-D option.

The way is to check first on you shell if it's ok or not, the command is: dmesg | grep -e DMAR -e IOMMU

If there is no response so try to check them first.

Thanks for your response! Since the system was running before the update, I’m assuming I don’t need to change anything in BIOS? I made sure that was all fine when I first installed the system a long time ago.

dmesg says IOMMU is enabled, but I do get the rmrr warning for my NIC. Browser won’t let me paste in iOS for some reason, but it’s the standard “ineligible for iommu domain attach, contact vendor” message. I need to look into the relaxed kernel again, the version naming scheme confused me.

But also, I originally had to add relaxed_rmrr to where you add intel_iommu=on, can’t remember the file name. But that may be different now when grub isn’t being used, so I’m not sure what to do about that.

pveversion -v says I’m on proxmox-ve 6.4-1 and pve-manager 6.4-13. Which version of the custom kernel should I use, do you know? If you check the link in my original post.

 

[andoniaina]

Don't know more that dude, I'm too beginner on this topic