Re: [Xen-devel] Will Xen 4.3 use upstream QEMU by default ?

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Sat, 23 Mar 2013, Ren, Yongjie wrote:
> > -----Original Message-----
> > From: Stefano Stabellini [mailto:stefano.stabellini@xxxxxxxxxxxxx]
> > Sent: Friday, March 22, 2013 8:05 PM
> > To: Ren, Yongjie
> > Cc: Stefano Stabellini; xen-devel@xxxxxxxxxxxxx; George Dunlap; Ian
> > Campbell; Ian Jackson; Jan Beulich
> > Subject: RE: Will Xen 4.3 use upstream QEMU by default ?
> > 
> > On Thu, 21 Mar 2013, Ren, Yongjie wrote:
> > > > -----Original Message-----
> > > > From: Stefano Stabellini [mailto:stefano.stabellini@xxxxxxxxxxxxx]
> > > > Sent: Thursday, March 07, 2013 11:51 AM
> > > > To: Ren, Yongjie
> > > > Cc: xen-devel@xxxxxxxxxxxxx; George Dunlap; Ian Campbell; Stefano
> > > > Stabellini; Ian Jackson; Jan Beulich
> > > > Subject: Re: Will Xen 4.3 use upstream QEMU by default ?
> > > >
> > > > On Thu, 7 Mar 2013, Ren, Yongjie wrote:
> > > > > Hi folks,
> > > > > >From the roadmap for Xen 4.3 development, Xen 4.3 will use
> > upstream
> > > > QEMU (partially done).
> > > > > So I'd like to confirm the following questions.
> > > > >
> > > > > 1. Will Xen 4.3 really use upstream QEMU by default ?
> > > > >       I have the question because so far the xen.git tree still uses
> > > > qemu-xen-unstable by default.
> > > >
> > > > Yes, Ian has just resubmitted a patch:
> > > >
> > > > http://marc.info/?l=xen-devel&m=136215985105199
> > > >
> > > >
> > > > > 2. If 'yes' for 1st question, which QEMU upstream will be used in Xen
> > > > 4.3 ?
> > > > >       In xen.git, upstream QEMU URL is "
> > > > git://xenbits.xen.org/qemu-upstream-unstable.git".
> > > > >       but, the repository of pure QEMU upstream is "
> > > > git://git.qemu.org/qemu.git".
> > > >
> > > > git://xenbits.xen.org/qemu-upstream-unstable.git is the tree that is
> > > > going to be used for the 4.3 release. However development should be
> > done
> > > > on git://git.qemu.org/qemu.git first, and once the patches are
> > upstream,
> > > > backports can be requested to get features and fixes in
> > > > git://xenbits.xen.org/qemu-upstream-unstable.git.
> > > thanks, Stefano.
> > > Is there a Xen related feature which works fine with
> > qemu-upstream-unstable.git
> > > tree but doesn't work with qemu.git tree?
> > 
> > I don't think so. If there are, they are probably just bugs introduced
> > in qemu.git that need to be fixed.
> > 
> > > I found qemu-upstream-unstable.git tree was based on QEMU 1.3.0
> > release and
> > > only added several bug fix commits after 1.3.0 release.
> > 
> > That's correct.
> 
> Thanks for the clarification. 
> We're doing some regular testing for upstream Xen on Intel hardware.
> We'll test xen.git with qemu.git tree by default, while in Xen 4.3 release
> cycle we'll test Xen 4.3 with qemu-upstream-unstable.git tree.

That's great. 
It would be good for xen.org to test both qemu-upstream-unstable.git
and qemu.git too.

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