Re: [Xen-devel] [PATCH 09/29] [HACK] tools/libxc: save/restore v2 framework

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Thu, 2014-09-11 at 12:04 +0100, Andrew Cooper wrote:
> On 11/09/14 12:01, Ian Campbell wrote:
> > On Thu, 2014-09-11 at 11:37 +0100, Andrew Cooper wrote:
> >> On 11/09/14 11:34, Ian Campbell wrote:
> >>> On Wed, 2014-09-10 at 18:10 +0100, Andrew Cooper wrote:
> >>>> For testing purposes, the environmental variable "XG_MIGRATION_V2" 
> >>>> allows the
> >>>> two save/restore codepaths to coexist, and have a runtime switch.
> >>>>
> >>>> It is indended that once this series is less RFC, the v2 framework will
> >>>> completely replace v1.
> >>> I think we are now at the point where this hack needs to be dropped from
> >>> the series.
> >> One problem is remus.  My plan when dropping this patch was to drop all
> >> of xc_domain_{save/restore}.c as well, but without remus migration-v2
> >> support available, this will break existing set-ups.
> > Hrm, how is that going wrt 4.5 freeze?
> 
> I havenât heard seen anything since v5 of this series (for which I did
> some quick bugfixes and released v6).
> 
> I don't know, which probably means not good.

I think there have been remus positins since then, but I've been leaving
them to Ian so I don't know either.

> >
> >> One option might be to have legacy and v2 sitting properly side-by-side
> >> in libxc for the transition period.
> > How long do you mean? Until 4.6?
> 
> Ideally, very early in the 4.6 dev period.

Well, also for the lifetime of 4.5...

Ian.



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