Re: [Linaro-mm-sig] [PATCH 6/8] drivers: add Contiguous MemoryAllocator

[Nicolas Pitre]

On Wed, 6 Jul 2011, Russell King - ARM Linux wrote:

> Another issue is that when a platform has restricted DMA regions,
> they typically don't fall into the highmem zone.  As the dmabounce
> code allocates from the DMA coherent allocator to provide it with
> guaranteed DMA-able memory, that would be rather inconvenient.

Do we encounter this in practice i.e. do those platforms requiring large 
contiguous allocations motivating this work have such DMA restrictions?


Nicolas
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