PCIe Passthrough of Radeon iGPU fails

steff22

@yannsionneau I also can't get Radeon iGPU to work either with xcp-ng 8.3

with hardware
hvovedkort B650D4U3-2L2Q/BCM,)
cpu AMD Ryzen 9 9950X

tried on ubuntu 25.04 and windows 10

get this error message

lspci -nnk
dmesg | grep amdgpu

amdgpu: Invalid PCI ROM header signature: expecting 0xaa55, got 0x4556
amdgpu: Unable to locate a BIOS ROM
amdgpu: Fatal error during GPU init
Unable to locate a BIOS ROM

poddingue

steff22, the answer you want is one post above yours.
Yann confirmed at post #4 that AMD iGPU passthrough doesn't work on XCP-ng today and that he's working on it, so your Invalid PCI ROM header signature looks like the known symptom rather than something specific to your board.
He also linked https://xcp-ng.org/forum/topic/8909 , same error string, if you want the longer history. I don't know enough about the ROM BAR side to add anything useful to what he wrote, and I'd rather not guess in front of him.
Worth following this thread, he said he'd keep at it.

steff22

@poddingue yeah I saw it now but I was more like mentioning that many people also have the same problem.

Hope it gets resolved soon

yannsionneau

@steff22
I am making good progress on this and I will soon have some packages to share for people to try and give feedback

poddingue

@yannsionneau That's excellent news, thanks a bunch!

steff22

@yannsionneau That's great news thank you very much

mgr42

@yannsionneau That's great to hear, I can't wait to see what it'll look like.

strom137

@yannsionneau ,
may this link helps if you not anyway know it
https://medium.com/@timemaster5/getting-amd-phoenix-igpu-passthrough-working-on-xen-xcp-ng-8856593f9c0d

I will give it a try this weekend

mgr42

Have there been any updates to this? I'm haven't seen any activity here for a while.

yannsionneau

@mgr42 Hi

I published a post this morning with packages to test, if you have a non production host on which you can test it would be awesome: https://xcp-ng.org/forum/topic/12523/igpu-pci-passthrough-new-experimental-packages-need-testers
Thanks!

Regards,

Yann