Not working on Ryzen 6900HX (Unable to get memory access)

[Rabcor]

$ lsmod | grep ryzen
ryzen_smu              45056  0
$ sudo ryzenadj -i
CPU Family: Rembrandt
SMU BIOS Interface Version: 18
Version: v0.14.0 
failed to get /sys/kernel/ryzen_smu_drv/pm_table: No such file or directory
failed to map /dev/mem: Operation not permitted
If you don't want to change your memory access policy, you need a kernel module for this task.
We do support usage of this kernel module https://gitlab.com/leogx9r/ryzen_smu
Unable to get memory access
Unable to init power metric table: -5, this does not affect adjustments because it is only needed for monitoring.

Edit: It seems like ryzen_smu is what's not working. I have no clue why though. neither dmesg nor journalctl show any information at all about it.

[schyhub]

Edit: try to pass the kernel parameter as mentioned on the main page iommu=relaxed.

Which bootloader you use? Grub? systemd-boot? Which distro?