> Here's where I left it last
>
> https://git.kernel.org/pub/scm/linux/kernel/git/djiang/linux.git/log/?h=pmem_blk_dma
Thanks Dave. I'll certainly rebase these on 4.18.x and do some testing!
> I do think we need to do some rework with the dmaengine in order to get
> better efficiency as well. At some point I would like to see a call in
> dmaengine that will take a request (similar to mq) and just operate on
> that and submit the descriptors in a single call. I think that can
> possibly deprecate all the host of function pointers for dmaengine. I'm
> hoping to find some time to take a look at some of this work towards the
> end of the year. But I'd be highly interested if you guys have ideas and
> thoughts on this topic. And you are welcome to take my patches and run
> with it.
OK, we were experimenting with a single PMEM driver and making decisions on DMA
vs memcpy based on IO size rather than forcing the user to choose which driver
to use.
Stephen
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