[PATCHv2] arm64: Add atomic pool for non-coherent and CMA allocaitons.

On Sat, Jun 07, 2014 at 01:55:22AM +0100, Laura Abbott wrote:

On 6/5/2014 10:05 AM, Catalin Marinas wrote:

quoted

On Mon, Jun 02, 2014 at 09:03:52PM +0100, Laura Abbott wrote:

quoted

Neither CMA nor noncoherent allocations support atomic allocations.
Add a dedicated atomic pool to support this.

CMA indeed doesn't support atomic allocations but swiotlb does, the only
problem being the vmap() to create a non-cacheable mapping. Could we not
use the atomic pool only for non-coherent allocations?

CMA needs the atomic pool for both non-coherent and coherent allocations.
Perhaps I should update the code so we only create the coherent atomic
pool if CMA is used.

It's also needed with non-coherent swiotlb because of vmap (but coherent
is fine).

-- 
Catalin