Re: [PATCH 00/16] Add new DMA mapping operation for P2PDMA

Jason Gunthorpe
2021-04-27T19:28:48Z

On Thu, Apr 08, 2021 at 11:01:07AM -0600, Logan Gunthorpe wrote:
> Hi,
>
> This patchset continues my work to to add P2PDMA support to the common
> dma map operations. This allows for creating SGLs that have both P2PDMA
> and regular pages which is a necessary step to allowing P2PDMA pages in
> userspace.
>
> The earlier RFC[1] generated a lot of great feedback and I heard no show
> stopping objections. Thus, I've incorporated all the feedback and have
> decided to post this as a proper patch series with hopes of eventually
> getting it in mainline.
>
> I'm happy to do a few more passes if anyone has any further feedback
> or better ideas.

For the user of the DMA API the idea seems reasonable enough, the next
steps to integrate with pin_user_pages() seem fairly straightfoward
too

Was there no feedback on this at all?

Jason