>I assume you want to exclude Root Ports because of multi-function
> devices and the "route to self" error. I was hoping for a reference
> to that so I could learn more about it.
Apologies Bjorn. This slipped through my net. I will try and get you a reference for RTS in the next couple of days.
> While I was looking for it, I found sec 6.12.1.2 (PCIe r4.0), "ACS
> Functions in SR-IOV Capable and Multi-Function Devices", which seems
> relevant. It talks about "peer-to-peer Requests (between Functions of
> the device)". Thay says to me that multi-function devices can DMA
> between themselves.
I will go take a look. Appreciate the link.
Stephen
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