On Wed, 6 May 2015, Arnd Bergmann wrote:
> Conversion for sys_futex is particularly easy, we can use the unmodified
> compat_sys_futex on 32-bit systems to provide compatibility for 32-bit
> time_t, and change sys_futex to pass a __kernel_timespec, which matches
> what future libc implementations will use as their struct timespec.
Unless I'm missing something I doubt that you get away that easy. It
works on 32bit, but not on 64 bit with 32bit app support:
Native 64bit: sys_futex()
32bit timespec32: compat_sys_futex()
32bit timespec64: ?????
You cannot map that to sys_futex() because the pointer size differs.
Thanks,
tglx
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