Re: [Xen-devel] [PATCH v3 COLOPre 16/26] tools/libx{l, c}: add back channel to libxc

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Thu, 2015-06-25 at 14:25 +0800, Yang Hongyang wrote:
> We need to send secondary's dirty page pfns back to primary.

In v2 Ian asked (<21888.2988.774072.32946@xxxxxxxxxxxxxxxxxxxxxxxx>):
        
        In the pdf
           http://www.socc2013.org/home/program/a3-dong.pdf?attredirects=0
        linked from the wiki page
           http://wiki.xen.org/wiki/COLO_-_Coarse_Grain_Lock_Stepping
        it says that the secondary keeps a copy of the original contents of
        its dirty pages.  So I don't understand why you need to send the dirty
        bitmap to the primary.

Which I don't see an answer for in my archive. Have I missed (or
misplaced) the answer?

Ian


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