CONSISTENT_DMA_SIZE limitations

[Magnus Damm]

Hi Santosh,

On Wed, Apr 28, 2010 at 4:07 PM, Shilimkar, Santosh
<santosh.shilimkar at ti.com> wrote:
>> On Wed, Apr 28, 2010 at 2:25 PM, Magnus Damm <magnus.damm at gmail.com> wrote:
>> > Extending CONSISTENT_DMA_SIZE seems like a good idea to me, but I'm
>> > not sure if doing so will break something else. Perhaps I need to
>> > rework some code in arch/arm/mm/dma-mapping.c?

> Not the best way but works is :
> You can override the default setting of 2MB to whatever memory you need and
> then use the dma_alloc_coherent(), to allocate from this space.
>
> Just ensure that you don't ioremap this memory with different cache-attribute
> otherwise you will end up in the alias mapping of same memory which is not
> allowed on newer ARMv7.

Good idea. =) Thanks for your suggestions.

/ magnus