Re: Arches that don't support PREEMPT

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Hi Willy,

On Tue, Sep 19, 2023 at 3:01 PM Matthew Wilcox <willy@xxxxxxxxxxxxx> wrote:
> On Tue, Sep 19, 2023 at 02:30:59PM +0200, Thomas Gleixner wrote:
> > Though it just occured to me that there are dragons lurking:
> >
> > arch/alpha/Kconfig:     select ARCH_NO_PREEMPT
> > arch/hexagon/Kconfig:   select ARCH_NO_PREEMPT
> > arch/m68k/Kconfig:      select ARCH_NO_PREEMPT if !COLDFIRE
> > arch/um/Kconfig:        select ARCH_NO_PREEMPT
>
> Sounds like three-and-a-half architectures which could be queued up for
> removal right behind ia64 ...
>
> I suspect none of these architecture maintainers have any idea there's a
> problem.  Look at commit 87a4c375995e and the discussion in
> https://lore.kernel.org/lkml/20180724175646.3621-1-hch@xxxxxx/

These links don't really point out there is a grave problem?

> Let's cc those maintainers so they can remove this and fix whatever
> breaks.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

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



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