Greg,
Can you please include the following patch to 4.14.y stable branch to fix the intel_idle probe and avoid mis-lead info to user by blaming unsupported processor model:
a4c447533a18 ("intel_idle: Graceful probe failure when MWAIT is disabled")
This is a self-contained and cherry-pick'able patch in linus master branch.
Thanks,
Hope this time is better communicated.