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SubjectRe: [Linaro-mm-sig] [RFC v3 0/2] Introduce DMA buffer sharing mechanism
On Wed, Dec 21, 2011 at 1:50 AM, Dave Airlie <> wrote:
>> I think this is a really good v1 version of dma_buf. It contains all the
>> required bits (with well-specified semantics in the doc patch) to
>> implement some basic use-cases and start fleshing out the integration with
>> various subsystem (like drm and v4l). All the things still under
>> discussion like
>> - userspace mmap support
>> - more advanced (and more strictly specified) coherency models
>> - and shared infrastructure for implementing exporters
>> are imo much clearer once we have a few example drivers at hand and a
>> better understanding of some of the insane corner cases we need to be able
>> to handle.
>> And I think any risk that the resulting clarifications will break a basic
>> use-case is really minimal, so I think it'd be great if this could go into
>> 3.3 (maybe as some kind of staging/experimental infrastructure).
>> Hence for both patches:
>> Reviewed-by: Daniel Vetter <>
> Yeah I'm with Daniel, I like this one, I can definitely build the drm
> buffer sharing layer on top of this.
> How do we see this getting merged? I'm quite happy to push it to Linus
> if we don't have an identified path, though it could go via a Linaro
> tree as well.
> so feel free to add:
> Reviewed-by: Dave Airlie <>
Thanks Daniel and Dave!

I guess we can start with staging for 3.3, and see how it shapes up. I
will post the latest patch version pretty soon.

Arnd, Dave: do you have any preference on the path it takes to get
merged? In my mind, Linaro tree might make more sense, but I would
leave it upto you gentlemen.
> Dave.
Best regards,

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