Re: Xen 4.5 development update

[Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>]

On Wed, May 28, 2014 at 11:01:43AM +0100, Roger Pau Monné wrote:
> On 27/05/14 19:06, konrad.wilk@oracle.com wrote:
> > Below is a summary of the projects / features being worked on for the 4.5
> > time frame that I had been gathering.
> > 
> > It is not complete! I would like folks input if I had missed something
> > or screwed up. Will also talk at Xen Hackahon about this and take a look
> > at  http://wiki.xen.org/wiki/Xen_Roadmap/4.4 to see which of the
> > items there should move over.
> > 
> > The tentative feature freeze is scheduled for September 10th,
> > which is months away.  With that in mind, I think it's time to take
> > stock of the development, so we know whether to ask for more help or divert
> > resources.
> > 
> > For items involving code hosted on the Xen.org site (including qemu-xen),
> > that means a likelihood of having the feature code-complete and mostly
> > working by the feature freeze.  (It's OK if there are still bugs to be
> > worked out.)  For items in Linux, I think it would mean having items on track
> > to make it into the kernel released just after the scheduled 4.5 time frame.
> > Not sure what that means for libvirt. :-)
> > 
> > For items involving code hosted on the Xen.org site (including qemu-xen),
> > that means a likelihood of having the feature code-complete and mostly
> > working by the feature freeze.  (It's OK if there are still bugs to be
> > worked out.)  For items in Linux, I think it would mean having items on track
> > to make it into the kernel released just after the scheduled 4.5 time frame.
> > Not sure what that means for libvirt. :-)
> > 
> > = Timeline =
> > 
> > We are planning on a 9-month release cycle.  Based on that, below are
> > our estimated dates:
> > * Feature Freeze: 10th September 2014
> > * First RC: 10th October
> > * Release: 10th December 2014
> > 
> > The RCs and release will of course depend on stability and bugs, and
> > will therefore be fairly unpredictable.  The feature freeze may be
> > slipped for especially important features which are near completion.
> > 
> > = Prognosis =
> 
> [...]
> 
> > * Roger Pau Monné  Prognosis:   100 %
> >     Xen PVH dom0
> >     PVH FreeBSD dom0
> 
> Hello Konrad,

Hey!
> 
> Thanks for doing this list, I certainly think Xen PVH Dom0 will make it
> to 4.5, most patches are already committed, and the remaining ones are
> already reviewed AFAIK. So very soon we will have PVH Dom0 available on
> Intel HW with EPT support, which brings the next question, what do we
> think we should work on after that? There are a bunch of things still
> pending for PVH, and I'm not sure we will be able to get all them done
> for 4.5, here's a list on top of my head:
> 
>  - PCI passthrough for DomU.
>  - Migration of PVH DomUs.
>  - Migration of guests from a PVH Dom0.
>  - AMD hardware support.
>  - PVH working with shadow.
> 
> IMHO, I think the two most important items would be getting PVH working
> on AMD hardware and shadow, but maybe others have different opinions.

I concur. I know that Mukesh had been in the time between reviews eyeballing
the AMD part, but nothing concrete yet.

I would say that the list of interesting/important items could be 
in this order:

  - Migration of PVH DomUs.
  - Migration of guests from a PVH Dom0.
  - AMD hardware support (Mukesh).
  - PVH working with shadow.
  - PCI passthrough for DomU.

But that is just my take.

> 
> Roger.
>