Re: [Xen-devel] [PATCH v5 04/14] libxc/migration: Pass checkpoint information into the save algorithm.

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Thu, 2015-05-14 at 09:03 +0800, Yang Hongyang wrote:
> 
> On 05/13/2015 11:49 PM, Ian Campbell wrote:
> > On Wed, 2015-05-13 at 09:53 +0800, Yang Hongyang wrote:
> >> From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
> >
> > OOI how was this signalled to the old code?
> 
> The old code check the callbacks "postcopy & checkpoint",
> if the callbacks exists, it will call them which I think is
> unreliable, so I add this flag to explicitly indicate a
> checkpointed stream in the new code. However, it is backward
> compatible, the legacy migration just don't know this flag
> and will ignore it.

That makes sense, thanks.

I think it would be good to quickly mention this in the commit log. If
there is no other reason to make a v7 then you can just reply to v6 with
some text and I'll merge it in on commit.



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