16 May
2015
16 May
'15
7:21 a.m.
On Sat, 16 May 2015, Thomas Gleixner wrote:
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.
Ignore that. You are right. Review induced brainmelt....
tglx