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SubjectRe: [PATCH - RFC] x86: unify arch/x86/kernel/Makefile(s)

* Ingo Molnar <mingo@elte.hu> wrote:

> > Combine the 32 and 64 bit specific Makefiles in one file. While
> > doing so link order was (almost) preserved on 32 bit but on 64 bit
> > link order changed a lot.
> >
> > Patch was checked with defconfig + allyesconfig builds. The same .o
> > files were linked in these configurations.
> >
> > To keep readability of the Makefiles a few Kconfig symbols was
> > added/modified and it was checked that they were not used anywhere
> > else.
>
> hm, i agree with this change, but would it be possible to split this
> up into gradual steps, to change the rules on 64-bit one by one? That
> would make it much more bisectable. In our experience changes to the
> link order have a high likelyhood of breaking stuff, as we've got so
> many implicit initcall dependencies that are not explicitly spelled
> out.

i've added your full patch meanwhile - maybe we can get away with it.

Still, if you see any easy way to do a straightforward series of ~40
patches that changes one link rule per patch then that would be great
and we could add them as an easier-to-bisect replacement for this one
large-scope patch.

Ingo


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