On Tue, Nov 11, 2014 at 12:44 AM, Or Gerlitz <[email protected]> wrote:
> [...] can you make it easily reviewable? that is, either send as patches to 
> this list or much easier put the relevant piece in public git tree (github?)

While it does take some effort to obtain the code, there are currently no plans 
to submit patches or create a public git tree for CCL direct until all of the 
lower level software is upstream.

> Can you point to the missing elements in the chart present @ this LWN post 
> http://lwn.net/Articles/564795/

The CCL direct code depends on a lower level API called the Symmetric 
Communications Interface (SCIF).  SCIF abstracts the details of communicating 
over the PCIe bus while providing an API that is symmetric between the host and 
coprocessor.  The MIC drivers referenced by the LWN post do not include the 
SCIF API.  Once SCIF is upstream, patches for CCL direct can be submitted.

The point is that there are actual consumers of peer direct that could use it 
if it were merged upstream.

-jerrie

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