Re: [Xen-devel] [PATCH RFC 0/4] Fix issues with zero-length records in migration v2

[Julien Grall <julien.grall@xxxxxxx>]

Hi all,

On 14/03/17 14:21, Wei Liu wrote:
> On Tue, Mar 14, 2017 at 01:50:44PM +0000, Andrew Cooper wrote:
> > On 14/03/17 13:20, Julien Grall wrote:
> > > Hi Andrew,
> > >
> > > On 21/07/16 18:17, Andrew Cooper wrote:
> > > > This series is RFC because it has only had compile testing thusfar.
> > > >
> > > > On AMD hardware supporting Debug Extentions, migration of a PV guest
> > > > which is
> > > > not currently using Debug Extentions fails, as the save side writes a
> > > > X86_PV_VCPU_MSRS record with 0 content, which the receving side
> > > > chokes on.
> > > >
> > > > It was alway the intention that such a record would be omitted, but that
> > > > obviously didn't go as intended.
> > > >
> > > > Adjust the docs to clarify that such records should be omitted, but that
> > > > receving sides should tolerate their presence.
> > > Last December you requested this series to be a blocker for Xen 4.9
> > > (see [1]). Do you have any update on the status?
> > As previously identified, my opinion is that the code as presented in v1
> > is correct, and there have been no reasonable arguments to the contrary.
> >
> > I can post v1 again, but it won't be altered.
> What about the subthread starting from
> <22422.18745.380486.234849@xxxxxxxxxxxxxxxxxxxxxxxx> ?
Gentle ping on this subject. Any consensus on the way to fix it?

Cheers,

--
Julien Grall

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