Require Linux 3.2 except on x86 / x86_64, 3.2 headers everywhere

[Joseph Myers]

On Tue, 23 Feb 2016, Florian Weimer wrote:

> * Joseph Myers:
> 
> > In the discussion in February, some concerns were expressed about
> > compatibility with OpenVZ containers.  It's not clear that these are
> > real issues, given OpenVZ backporting kernel features and faking the
> > kernel version for guest software, as discussed in
> > <https://sourceware.org/ml/libc-alpha/2016-02/msg00278.html>.  It's
> > also not clear that supporting running GNU/Linux distributions from
> > late 2016 (at the earliest) on a kernel series from 2009 is a sensible
> > expectation.  However, as an interim step, this patch increases the
> > requirement everywhere except x86 / x86_64 (since the controversy was
> > only about those architectures); the special caveats and settings can
> > easily be removed later when we're ready to increase the requirements
> > on x86 / x86_64 (and if someone would like to raise the issue on LWN
> > as suggested in the previous discussion, that would be welcome).  3.2
> > kernel headers are required everywhere by this patch.
> 
> Agreed, let's do it this way.

Patch now committed.

-- 
Joseph S. Myers
joseph@codesourcery.com