Re: [PATCH 5/8] xen/gntdev: Add initial support for dma-buf UAPI

[Oleksandr Andrushchenko]

On 05/30/2018 01:34 AM, Boris Ostrovsky wrote:
> On 05/25/2018 11:33 AM, Oleksandr Andrushchenko wrote:
>
> >   
> > +/*
> > + * Create a dma-buf [1] from grant references @refs of count @count provided
> > + * by the foreign domain @domid with flags @flags.
> > + *
> > + * By default dma-buf is backed by system memory pages, but by providing
> > + * one of the GNTDEV_DMA_FLAG_XXX flags it can also be created as
> > + * a DMA write-combine or coherent buffer, e.g. allocated with dma_alloc_wc/
> > + * dma_alloc_coherent.
> > + *
> > + * Returns 0 if dma-buf was successfully created and the corresponding
> > + * dma-buf's file descriptor is returned in @fd.
> > + *
> > + * [1] https://elixir.bootlin.com/linux/latest/source/Documentation/driver-api/dma-buf.rst
>
> Documentation/driver-api/dma-buf.rst.
Indeed ;)
> -boris
Thank you,
Oleksandr