On 06/15/2018 02:27 AM, Oleksandr Andrushchenko wrote: > From: Oleksandr Andrushchenko <oleksandr_andrushchenko@xxxxxxxx> > > 1. Create a dma-buf from grant references provided by the foreign > domain. By default dma-buf is backed by system memory pages, but > by providing GNTDEV_DMA_FLAG_XXX flags it can also be created > as a DMA write-combine/coherent buffer, e.g. allocated with > corresponding dma_alloc_xxx API. > Export the resulting buffer as a new dma-buf. > > 2. Implement waiting for the dma-buf to be released: block until the > dma-buf with the file descriptor provided is released. > If within the time-out provided the buffer is not released then > -ETIMEDOUT error is returned. If the buffer with the file descriptor > does not exist or has already been released, then -ENOENT is > returned. For valid file descriptors this must not be treated as > error. > > 3. Make gntdev's common code and structures available to dma-buf. > > Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@xxxxxxxx> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
