Messages in this thread | | | Date | Thu, 18 Aug 2022 19:55:28 +0800 | Subject | Re: [PATCH v11 04/13] PCI: Allow PASID only when ACS enforced on upstreaming path | From | Baolu Lu <> |
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On 2022/8/18 06:48, Jason Gunthorpe wrote: > 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.
Yes. Sure thing. Thank you!
Best regards, baolu
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