>>> On 16.01.13 at 18:48, David Vrabel <david.vrabel at citrix.com> wrote: > Full compatibility is possible and not that hard. Is it actually worth > it though? Will there be people updating Xen to 4.3 and unable to > update their kernel or userspace tools? I think we simply shouldn't even be considering removal of functionality that we can't tell for sure is not being used anywhere, and that we don't deliberately want to go away (like was the case with 32-bit hypervisor support). Jan