Re: [PATCH] slab: Fix too strict alignment check in create_cache()

["Christoph Lameter (Ampere)" <cl@gentwo.org>]

On Thu, 21 Nov 2024, Geert Uytterhoeven wrote:

> Linux has supported m68k since last century.

Yeah I fondly remember the 80s where 68K systems were always out of reach
for me to have. The dream system that I never could get my hands on. The
creme de la creme du jour. I just had to be content with the 6800 and
6502 processors. Then IBM started the sick road down the 8088, 8086
that led from crap to more crap. Sigh.

> Any new such assumptions are fixed quickly (at least in the kernel).
> If you need a specific alignment, make sure to use __aligned and/or
> appropriate padding in structures.
> And yes, the compiler knows, and provides __alignof__.
>
> > How do you deal with torn reads/writes in such a scenario? Is this UP
> > only?
>
> Linux does not support (rate) SMP m68k machines.

Ah. Ok that explains it.

Do we really need to maintain support for a platform that has been
obsolete for decade and does not even support SMP?