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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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