Re: [PATCH 0/9] posix_clocks: Prepare syscalls for 64 bit time_t conversion

[Deepa Dinamani]

> I had on concern about x32, maybe we should check
> for "COMPAT_USE_64BIT_TIME" before zeroing out the tv_nsec
> bits.

Thanks, I think you are right. I had the check conditional on
CONFIG_64BIT_TIME and then removed as I forgot why I added it. :)

> Regarding CONFIG_COMPAT_TIME/CONFIG_64BIT_TIME, would
> it help to just leave out that part for now and unconditionally
> define '__kernel_timespec' as 'timespec' until we are ready to
> convert the architectures?

Another approach would be to use separate configs:

1. To indicate 64 bit time_t syscall support. This will be dependent
on architectures as CONFIG_64BIT_TIME.
We can delete this once all architectures have provided support for this.

2. Another config (maybe COMPAT_32BIT_TIME?) to be introduced later,
which will compile out all syscalls/ features that use 32 bit time_t.
This can help build a y2038 safe kernel later.

Would this work for everyone?

-Deepa