On Fri, May 8, 2026 at 8:42 AM Fabio Valentini <[email protected]> wrote:
>
> On Fri, May 8, 2026 at 2:38 PM Gary Buhrmaster
> <[email protected]> wrote:
> >
> > On Fri, May 8, 2026 at 9:07 AM Richard W.M. Jones <[email protected]> wrote:
> > >
> > > On Thu, May 07, 2026 at 10:43:37AM -0500, Michael Catanzaro wrote:
> > > > whereas it's common for builds to fail only on s390x
> > > > due to endianness issues.
> > >
> > > This is a feature, not a bug.
> >
> > Not just a feature, an advantage.  With the
> > elimination of BE Power as a supported
> > architecture, the s/390 BE architecture
> > helps developers identify errors due to
> > LE monoculture thinking.
>
> Well, mostly, it just makes things blow up in packagers faces only on s390x.
> Most upstream developers I reported endianness bugs to were happy to
> take patches but almost always said something to the effect of "this
> is an obscure CPU architecture that I cannot test or even have access
> to, patches welcome but meh"
>

We could, of course, choose to bring back support for big endian
PowerPC if we wanted to have an "easier" platform for endianness. All
POWER systems are bi-endian and IBM actively supports both endian
modes. Ironically, I think we could actually bootstrap it from the
ppc64le Fedora variant.

But yes, the fact that we've lacked access to test machines for s390x
for several years now is a big bummer. I think this is probably one of
those lines in the sand for me: if packager machines cannot be
provided, then the architecture is a candidate for removal from
Fedora. It's just silly to expect people to support architectures with
zero access to the platform.

Likewise, I would refuse to consider RISC-V as a practical matter
until at least two conditions are true:

* They are building rawhide and tracking it in a reasonable timeframe
* Packager machines are available

These are two non-negotiable points for a successful architecture in Fedora.




--
真実はいつも一つ!/ Always, there's only one truth!
-- 
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