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

Christoph Hellwig
2018-01-09T16:46:42Z

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.