[RFC PATCH] AARCH64/ILP32: introduce kernel time types

[Yury Norov]

On Tue, Jun 28, 2016 at 12:27:34PM +0200, Andreas Schwab wrote:
> Yury Norov <ynorov@caviumnetworks.com> writes:
> 
> > Utmp does not deal with kernel, that's true. But this is time types by
> > nature, and native ABI keeps it synced with kernel. And ILP ABI has to
> > be compatible with navive ABI, and so has to have it synced with
> > kernel as well.
> 
> Since it is an on-disk format it needs to be handled specially, to avoid
> the difficulties we have now on aarch64 to resurface for future ports.
> 
> Andreas.

I still think this is correct way. We have single, kernel-synced type
for communicating with kernel and native ABI (disk), and convert it to
user type where needed (currently for aarch64/stat only). It also
helps to move to 64-bit time types smoothly, as we can make time_t
deprecated and force new APIs use __ktime_t.

What sort of difficulties you see with this approach?

Yury.