On Tue, Aug 26, 2014 at 01:04:30PM +0200, Paolo Bonzini wrote: > Il 26/08/2014 08:47, David Marchand ha scritto: > > > > Using a version message supposes we want to keep ivshmem-server and QEMU > > separated (for example, in two distribution packages) while we can avoid > > this, so why would we do so ? > > > > If we want the ivshmem-server to come with QEMU, then both are supposed > > to be aligned on your system. > > What about upgrading QEMU and ivshmem-server while you have existing > guests? You cannot restart ivshmem-server, and the new QEMU would have > to talk to the old ivshmem-server. Version negotiation also helps avoid confusion if someone combines ivshmem-server and QEMU from different origins (e.g. built from source and distro packaged). It's a safeguard to prevent hard-to-diagnose failures when the system is misconfigured. Stefan
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