Re: dma_declare_coherent_memory on main memory

[Sascha Hauer]

On Fri, Dec 07, 2018 at 04:34:32PM +0100, Christoph Hellwig wrote:
> 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.

At least for i.MX27/31 I'd say this predates CMA support, so historical
reasons.

Sascha

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