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Re: [Xen-devel] [PATCH v2 COLOPre 09/13] tools/libxl: Update libxl_save_msgs_gen.pl to support return data from xl to xc



On Mon, 2015-06-08 at 11:43 +0800, Yang Hongyang wrote:
> From: Wen Congyang <wency@xxxxxxxxxxxxxx>
> 
>  Currently, all callbacks return an integer value or void. We cannot
>  return some data to xc via callback. Update libxl_save_msgs_gen.pl
>  to support this case.

(Odd two space indent from somewhere)

Can you be more specific about what kind of data you need to pass back
here? Is it an opaque "void *" blob or is it potentially more
structured? That is useful to know in case there might be a better way
to achieve the goal.

Ian.


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