Re: [ANNOUNCE] kvm-14 release

James Morris
2007-02-19T15:37:35Z

On Mon, 19 Feb 2007, Avi Kivity wrote:

> Daniel P. Berrange wrote:
> >> Note that if you use the modules from Linux 2.6.20, you need to use
> >> kvm-12. You can use kvm-14 with Linux 2.6.20, provided you use the
> >> external module included in kvm-14.
> >>
> >
> > Is there back-compatability in the reverse direction ? ie, will the
> > new kmod from kvm-14 work with the older kvm-12 userspace ?
> >
>
> No.

It's traditional for the mainline kernel to maintain backward
compatibility with existing userspace ABIs (e.g. syscalls).

The idea of a userspace application breaking because of a mainline kernel
upgrade is not acceptable to users and also pretty much unsupportable by
distros.

- James
--
James Morris
<jmorris-gx6/JNMH7DfYtjvyW6yDsg@public.gmane.org>