Re: [PATCH 02/11] mm/slab: remove BAD_ALIEN_MAGIC again

[Christoph Lameter]

On Mon, 28 Mar 2016, Andrew Morton wrote:

> On Mon, 28 Mar 2016 14:26:52 +0900 js1304@xxxxxxxxx wrote:
>
> > From: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
> >
> > Initial attemp to remove BAD_ALIEN_MAGIC is once reverted by
> > 'commit edcad2509550 ("Revert "slab: remove BAD_ALIEN_MAGIC"")'
> > because it causes a problem on m68k which has many node
> > but !CONFIG_NUMA.
>
> Whaaa?  How is that even possible?  I'd have thought that everything
> would break at compile time (at least) with such a setup.

Yes we have that and the support for this caused numerous issues. Can we
stop supporting such a configuration?