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

[Wen Congyang <wency@xxxxxxxxxxxxxx>]

On 06/16/2015 06:49 PM, Ian Campbell wrote:
> 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.

The secondary vm's dirty bitmap.

Thanks
Wen Congyang

> 
> Ian.
> 
> .
> 


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