On Mon, 2018-07-30 at 18:38 +0200, Christoph Hellwig wrote:
> The generic dma-noncoherent code provides all that is needed by powerpc.
>
> Note that the cache maintainance in the existing code is a bit odd
> as it implements both the sync_to_device and sync_to_cpu callouts,
> but never flushes
The generic dma-noncoherent code provides all that is needed by powerpc.
Note that the cache maintainance in the existing code is a bit odd
as it implements both the sync_to_device and sync_to_cpu callouts,
but never flushes caches when unmapping. This patch keeps both
directions arounds, which
