Messages in this thread | | | Date | Tue, 18 Apr 2017 15:22:58 -0600 | From | Jason Gunthorpe <> | Subject | Re: [RFC 0/8] Copy Offload with Peer-to-Peer PCI Memory |
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On Tue, Apr 18, 2017 at 02:11:33PM -0700, Dan Williams wrote: > > I think this opens an even bigger can of worms.. > > No, I don't think it does. You'd only shim when the target page is > backed by a device, not host memory, and you can figure this out by a > is_zone_device_page()-style lookup.
The bigger can of worms is how do you meaningfully stack dma_ops.
What does the p2p provider do when it detects a p2p page?
Jason
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