[Y2038] Which type to use for timestamps: u64 or s64?

Hi Arnd,

We're redesigning the timestamp handling in the video4linux subsystem moving away from struct timeval to a single timestamp in ns (what ktime_get_ns() gives us). But I was wondering: ktime_get_ns() gives a s64, so should we use s64 as well as the timestamp type we'll eventually be returning to the user, or should we use u64?

The current patch series we made uses a u64, but I am now beginning to doubt that decision.

Regards,

Hans