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[Xen-devel] Re: [Qemu-devel] [PATCH 1/2] xenner: add event channel implementation.

Gerd Hoffmann writes ("Re: [Qemu-devel] [PATCH 1/2] xenner: add event channel 
> Ian Jackson wrote:
> > Why not make it a compile-time option ?
> IMHO compile time options are a usability nightmare in most cases.

They're not a problem if you need different versions in the two cases
anyway.  That is going to be the case for the foreseeable future.  As
I explained: there is code in qemu-xen which is essential for
operation in the current Xen use model but which upstream don't think
suitable; and of course because of interface skew in the Xen world, it
is necessary to have a compatible version of qemu.

So an OS installation which is both a Xen/xend dom0 and which also has
the ability to run qemu for ordinary emulations, will need two copies
of qemu: one for the Xen domUs invoked by xend, and one for
command-line invocations.

> Also distrubutions would have to ship two binaries instead of one.  And
> there are already way to much different qemu binaries today.  I want to
> get that number down, not up.

The different binaries are with us for at least the next several


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