On Wed, Aug 17, 2022 at 04:17:43PM -0500, Bjorn Helgaas wrote: > Does the PCIe spec really allow TLPs with PASID to be routed anywhere > except upstream? I think yes: 2.2.10.2 End-End TLP Prefix Processing: The presence of an End-End TLP Prefix does not alter the routing of a TLP. TLPs are routed based on the routing rules covered in Section 2.2.4 . Which I read as saying that routing is done after stripping all the prefixes. PASID is a prefix. Lu, you may want to quote the spec in the commit message to make it clear. A strange choice in my opinion, but there it is.. Jason
