On Thu, May 20, 2021 at 05:40:54PM +0000, Deucher, Alexander wrote: > It doesn't really have anything to do with PCI. The PCI link is just a proxy > for specific AMD platforms. It's platform firmware behavior we are catering > to. This was originally posted as an nvme quirk, but during the review it > was recommended to move the quirk into PCI because the quirk is not specific > a particular NVMe device, but rather a set of AMD platforms. Lots of other > platforms seems to do similar things in the nvme driver based on ACPI or DMI > flags, etc. On our hardware this nvme flag is required for all cezanne and > renoir platforms. The quirk was initially presented as specific to the pci root. Does it make more sense for nvme to recognize the limitation from querying a different platform component instead of the pci bus?
