PCIe pause testing

Hello,


I am trying to implement PCIe pause in our kExt and cannot see a way to test this feature. I found some documentation on apple.com saying that I need to do:


sudo nvram boot-args="pci=0x200"


Having done this, I still don't see any power state transitions when a new device is attached. Any clues?


Thank you,


David A. Hoatson