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    SubjectRe: [PATCH v3 01/11] PCI/P2PDMA: Support peer-to-peer memory
    Date
    >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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