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?