Re: [Xen-devel] Request a freeze exception for COLO in v4.6

[Yang Hongyang <yanghy@xxxxxxxxxxxxxx>]

On 07/17/2015 06:18 PM, Ian Jackson wrote:
> Wei Liu writes ("Re: [Xen-devel] Request a freeze exception for COLO in v4.6"):
> > Ian and Ian, anything to add? What are your opinions?
> I think COLO is an exciting and important feature.
>
> Unfortunately I agree with Wei that at this stage taking both series
> as they currently stand into 4.6 is not tenable.  (Perhaps if I had
> been able to help earlier in the release cycle this would have been
> different; so for that I'm sorry.)
>
>
> I would like to see at least the early parts of `COLOPre' in staging
> as soon as possible.  There is much preparatory work there which would
> be annoying to rebase around, and which has collateral benefits.
Thanks, if you are going to merge some of the patches, there is the
latest version of `COLOPre' patchset:
https://github.com/macrosheep/xen/tree/colo-v9
The latest 26 commits.

I think all patches are ready to be merged except:
7  libxl/remus: init checkpoint_callback in Remus checkpoint callback
11 tools/libxc: support to resume uncooperative HVM guests
20 tools/libx{l,c}: add back channel to libxc

> If I can take one example, 11/25 "tools/libxc: support to resume
> uncooperative HVM guests".  Based on my current understanding this is
> even a bugfix.  Sadly it is not quite ready (or at least, wasn't last
> night).  But with a few more days we can probably get much of this
> cleanup and preparatory work in.
>
>
> Assuming nothing goes horribly wrong, I am very optimistic about COLO
> making it upstream soon, just not in 4.6.
>
> Thanks,
> Ian.
> .
--
Thanks,
Yang.

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