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Re: [Xen-devel] (updated) test report for xen-unstable tree with upstream QEMU

On Fri, 4 Jan 2013, Ren, Yongjie wrote:
> > -----Original Message-----
> > From: Ian Campbell [mailto:Ian.Campbell@xxxxxxxxxx]
> > Sent: Thursday, January 03, 2013 12:14 AM
> > To: Ren, Yongjie
> > Cc: xen-devel@xxxxxxxxxxxxx; Dai, Yan; Xu, YongweiX; Liu, RongrongX; Liu,
> > SongtaoX; Zhou, Chao; Stefano Stabellini; Anthony Perard
> > Subject: Re: [Xen-devel] (updated) test report for xen-unstable tree with
> > upstream QEMU
> > 
> > On Mon, 2012-12-24 at 02:24 +0000, Ren, Yongjie wrote:
> > > Hi All,
> > > We did some testing for Xen-unstable tree with upstream QEMU.
> > 
> > Thanks.
> > 
> > Out of interest do you also test (or plan to test) the qemu-upstream
> > stable branch which is built by default when you build Xen?
> > 
> No, so far we still use qemu-xen-unstable tree when building Xen in our 
> regular testing.
> We only have enough resource to cover one qemu tree for Xen.
> Which qemu do you suggest in our Xen upstream testing? qemu-xen-unstable or 
> pure qemu upstream ?

qemu-xen-unstable deviates very little from QEMU upstream nowadays,
however if you test QEMU upstream you risk finding transient QEMU bugs.
I am not sure that you want that, it would be like using the very latest
Linus' tree as dom0 kernel.
If you want to catch Xen bugs and harden Xen releases it is probably
better to use qemu-xen-unstable.

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