On Tue, Aug 21, 2018 at 4:53 PM, Logan Gunthorpe <logang@xxxxxxxxxxxx> wrote: > > CPUs don't always have good support for routing PCI P2P transactions. > However, I would have expected a relatively new i7 CPU to support it > well. It may simply be that this CPU does not have good support, however > that comes as a bit of a surprise to me. Our plans for the P2P > patch-set was to have a white-list for CPUs that work. > > If you can, it would be worth hooking up a PCI analyzer to see what's > happening to the TLPs in both cases. We do have one, but it will be a bit of a logistical effort to get it set-up in this config. Will be a while before I can gather that data. Will forward along when I do. Thanks, Eric
