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

["Ren, Yongjie" <yongjie.ren@xxxxxxxxx>]

> -----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.


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