Re: [PATCH v7 0/5] prerequisites for device reserved local mem rework

[Laurentiu Tudor]

On 31.05.2019 19:43, Christoph Hellwig wrote:
> On Wed, May 29, 2019 at 02:06:12PM +0000, Laurentiu Tudor wrote:
>> Thanks, hope this time everything is fine.
> 
> I've applied it to the dma-mapping tree now.
> 
>> When you get the time, please let me know your ideas on the next steps.
> 
> I think the next step is to move the call to
> dma_alloc_from_dev_coherent from dma_alloc_attrs into the ->alloc
> instances.  The only onces that really need it for now are the
> generic and legacy arm dma-direct code, and drivers/iommu/dma-iommu.c
> as well as the ARM DMA API code, as those are the ones use for
> architectures that declare coherent regions.  The other iommus are
> not used on OF platforms (at least that's what my analysis said a while
> ago, feel free to double check it)

Thanks for the details. I'll be OOO next week so probably I'll start 
looking into it next next week.

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Best Regards, Laurentiu