Can I get a quick review from the arm64 folks?  I think it should
be fine there as it basically is a code move, but an additional pair
or two of eyes always helps to weed out bugs.

On Mon, Nov 05, 2018 at 01:19:22PM +0100, Christoph Hellwig wrote:

Hi all,

this series moves the existing arm64 implementation of arch_dma_alloc and
arch_dma_free to common code given that it is not arm64-specific, and
then also uses it for csky.  Given how many architectures remap memory
for the DMA coherent implementation it should be usable for many more,
and the new cache flushing hook and the generic atomic pool are also
enablers for implementing the IOMMU API dma ops in common code in a
follow on series.
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