Re: [PATCHv4 3/5] common: dma-mapping: Introduce common remapping functions

From: Olof Johansson
Date: Wed Jul 09 2014 - 18:47:01 EST

On Wed, Jul 2, 2014 at 11:03 AM, Laura Abbott <lauraa@xxxxxxxxxxxxxx> wrote:
> For architectures without coherent DMA, memory for DMA may
> need to be remapped with coherent attributes. Factor out
> the the remapping code from arm and put it in a
> common location to reduced code duplication.
> Signed-off-by: Laura Abbott <lauraa@xxxxxxxxxxxxxx>

Hm. The switch from ioremap to map_vm_area() here seems to imply that
lib/ioremap can/should be reworked to use just wrap the vmalloc
functions too?

Unrelated to this change.

I did a pass of review here. Nothing stands out as wrong but I don't
claim to know this area well these days.

What's the merge/ack plan here? It might reduce the complexity of
merging to add the common functions in your series, then move the ARM
code over separately?

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