[Xen-devel] [RFC PATCH 0/3] Improve kexec support in Xen hypervisor

[Jan Beulich]

>>> On 17.01.13 at 11:46, "Jan Beulich" <JBeulich at suse.com> wrote:
>>>> 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).

Forgot to say - for our distros, the kernel is being updated quite
regularly, whereas I have no idea at what intervals the kexec
user space code gets pulled. Plus I don't think I've seen any
patches to this one yet, so you're basically disabling all kexec
functionality for the time being when you remove the old code.

Jan