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Re: [Xen-devel] Re: [PATCH] qemu-xen: Fix PV segfault

John Levon writes ("Re: [Xen-devel] Re: [PATCH] qemu-xen: Fix PV segfault"):
> On Wed, Jul 02, 2008 at 10:38:32AM +0200, Gerd Hoffmann wrote:
> > While I'm at it:  There is a patch queue with at
> > http://kraxel.fedorapeople.org/patches/
> > 
> > The plan is to submit that stuff upstream, so regular qemu will have xen
> > support.  Right now the patch queue has only paravirt bits.  It comes
> 
> I'm confused, I thought that was the point of the qemu-xen tree

Gerd Hoffman's tree seems to be something entirely different.  I'm not
sure I understand what the point of it is.  The reason why everyone is
using qemu is that it has all of the hardware emulation device models.

Qemu proper (ie upstream) also uses the CPU emulator (translator,
now).  KVM and Xen don't use that because they run the code on the
physical CPU one way or another.

Gerd Hoffman's setup doesn't use the device models, nor the CPU
emulator.  Really as far as I can tell the only thing he wants from
qemu is the command line parser !  This is quite bizarre as it's not a
very good command line parser (qemu upstream are considering replacing
it with something more data-driven and more modular).

Ian.

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