[PATCH RESEND] Update kernel math-emu code from current glibc soft-fp

[Geert Uytterhoeven]

On Wed, Jul 1, 2015 at 12:18 AM, Michael Ellerman <mpe at ellerman.id.au> wrote:
> On Tue, 2015-06-30 at 10:48 +0000, Joseph Myers wrote:
>> On Tue, 30 Jun 2015, Michael Ellerman wrote:
>>
>> > Is there some way you can imagine of splitting this up into smaller chunks, so
>> > that different arches can merge the pieces separately?
>>
>> Well, it could be split as:
>>
>> 1. Rename include/math-emu to math-emu-old and update architectures for
>> the renaming (mechanically).
>>
>> 2. Add new include/math-emu.
>>
>> 3,4,5,6,7. Move each architecture from math-emu-old to math-emu.
>>
>> 8. Remove math-emu-old.
>>
>> You still have patch 1 affecting all five architectures, but with the
>> per-architecture changes being much simpler.
>
> OK. That's obviously a bit more churn, but I think it's probably the best
> approach. Unless someone else has a better idea?

Does it make that much of a difference?

You said:
| However in it's current form it's not easily mergeable, because it
touches five
| architectures and has the potential to cause breakage on all of them.

Patch 1 still touches five architectures.
Patches 3-7 still have the potential to break an architecture, but only one of
them at a time.

>From a bisectability point of view there's no change.
Except that patch 1 (and 8) may break something, too ;-)

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds