Re: [RFC 0/8] Copy Offload with Peer-to-Peer PCI Memory

[Benjamin Herrenschmidt]

On Tue, 2017-04-18 at 12:00 -0600, Jason Gunthorpe wrote:
> - All platforms can succeed if the PCI devices are under the same
> Â 'segment', but where segments begin is somewhat platform specific
> Â knowledge. (this is 'same switch' idea Logan has talked about)

We also need to be careful whether P2P is enabled in the switch
or not.

Cheers,
Ben.