Messages in this thread | | | Date | Wed, 6 Jul 2011 10:37:37 -0400 (EDT) | From | Nicolas Pitre <> | Subject | Re: [Linaro-mm-sig] [PATCH 6/8] drivers: add Contiguous Memory Allocator |
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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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