[RFC] UBUNTU: [Config] y2038: Disable COMPAT and COMPAT_32BIT_TIME on ppc64le

Michal Suchánek msuchanek at suse.de
Fri Nov 24 19:25:12 AEDT 2023

On Fri, Nov 24, 2023 at 03:59:04PM +1100, Michael Ellerman wrote:
> Dimitri John Ledkov <dimitri.ledkov at canonical.com> writes:
> > BugLink: https://bugs.launchpad.net/bugs/2038587
> >
> > ppc64le is exclusively little endian and 64-bit, thus there is no need
> > for COMPAT_32BIT_TIME, nor COMPAT.
> To be pedantic, the ppc64le kernel does support running 32-bit little
> endian userspace in compat mode (CONFIG_COMPAT=y). It's a distro choice
> as to whether you support COMPAT. Notably there are two other major
> distros that don't support COMPAT for ppc64le, and the set of 32-bit LE
> software is effectively empty.

I have seen software that does not work when compiled 64bit so it would
build 32bit binary even on ppc64le and abuse the compat layer to run.

It quite rare, though.



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