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

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-...

Documentation/driver-api/dma-buf.rst.

-boris