Re: Can we drop upstream Linux x32 support?

From: Richard Weinberger
Date: Thu Dec 13 2018 - 04:05:32 EST

On Thu, Dec 13, 2018 at 6:03 AM Kevin Easton <kevin@xxxxxxxxxxx> wrote:
> On Tue, Dec 11, 2018 at 11:29:14AM +0100, John Paul Adrian Glaubitz wrote:
> ...
> > I can't say anything about the syscall interface. However, what I do know
> > is that the weird combination of a 32-bit userland with a 64-bit kernel
> > interface is sometimes causing issues. For example, application code usually
> > expects things like time_t to be 32-bit on a 32-bit system. However, this
> > isn't the case for x32 which is why code fails to build.
> OpenBSD and NetBSD both have 64-bit time_t on 32-bit systems and have
> had for four or five years at this point.

They can also do flag-day changes and break existing applications, Linux not.