Hi Arnd, I love your patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v4.19-rc1 next-20180829] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Arnd-Bergmann/y2038-syscall-changes-for-4-20/20180828-035049 reproduce: # apt-get install sparse make ARCH=x86_64 allmodconfig make C=1 CF=-D__CHECK_ENDIAN__ sparse warnings: (new ones prefixed by >>) include/uapi/linux/perf_event.h:147:56: sparse: cast truncates bits from constant value (8000000000000000 becomes 0) >> kernel/time/time.c:866:5: sparse: symbol '__get_old_timespec32' was not declared. Should it be static? >> kernel/time/time.c:882:5: sparse: symbol '__put_old_timespec32' was not declared. Should it be static? Please review and possibly fold the followup patch. --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation