On Tue, Apr 8, 2025 at 6:06 PM Bjorn Helgaas <helgaas@xxxxxxxxxx> wrote: > > [+cc Logan, Michael] > > > The pci_p2pdma_whitelist[] is only updated when somebody tests a > platform and determines that its RC can route peer-to-peer > transactions between separate Root Ports. This routing is not > required by the PCIe spec, so we can't assume that all platforms > support it. > > From PCIe r6.0, sec 1.3.1: > > The capability to route peer-to-peer transactions between hierarchy > domains through an RC is optional and implementation dependent. > > Bjorn Thank you so much for the fast response! For the testing, is simple rdma ping-pong sufficient? Or a more specific testing tool? Unfortunately I don't have a fancy pcie hardware analyzer. -- Thanks, Damir Chanyshev
