Thanks Juraj, I did bring the system to 22.04 based on our conversation from yesterday. From there and from checking out to the new current kernel (5.15.0-82-generic) yes the diffs cleanly apply, removing the x86 dependency on the QAT kernel drivers, and then you can make the kernel, enabling the QAT driver. It looks like that all worked fine. I didn't actually install and reboot with the custom kernel today because I don't want to do that with a production server right before the weekend, particularly with USA having a holiday on Monday. I will reboot with the custom kernel on Tuesday morning though, and then hopefully the compress/crypto testsuites on QAT will be unblocked. Thanks, the guidance is greatly appreciated. Best, Patrick