Subject: dma_declare_coherent_memory on main memory

From: Christoph Hellwig <[email-masked]>
Date: Fri, 7 Dec 2018 16:34:32 +0100

Hi all,

the ARM imx27/31 ports and various sh boards use
dma_declare_coherent_memory on main memory taken from the memblock
allocator.

Is there any good reason these couldn't be switched to CMA areas?
Getting rid of these magic dma_declare_coherent_memory area would
help making the dma allocator a lot simpler.

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