Re: [LSF/MM TOPIC] Filesystem-DAX, page-pinning, and RDMA

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On Wed, Jan 24, 2018 at 11:02:16PM -0800, Dan Williams wrote:

> No, in 3 dimensions since there is a need to support non-ODP RDMA
> hardware, hypervisors want to coordinate DMA for guests, and non-RDMA
> hardware also pins memory indefinitely like V4L2. So it's bigger than
> RDMA, but that will likely be the first consumer of this 'longterm
> pin' mechanism.

BTW, did you look at VFIO? I think it should also have this problem
right?

Jason
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