[PATCH 06/12] IB/core: Add optional PCI P2P flag to rdma_rw_ctx_[init|destroy]()

Christoph Hellwig hch at lst.de
Tue Jan 9 08:46:40 PST 2018


On Mon, Jan 08, 2018 at 12:49:50PM -0700, Jason Gunthorpe wrote:
> Pretty sure P2P capable IOMMU hardware exists.
> 
> With SOC's we also have the scenario that an DMA originated from an
> on-die device wishes to target an off-die PCI BAR (through the IOMMU),
> that definitely exists today, and people care about it :)

Then people will have to help and contribute support for it.



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