On Tue, 5 Nov 2019, Florian Weimer wrote: > * Shawn Landden: > > If this new ABI is used, then bit 1 of the *next pointer of the > > user-space robust_list indicates that the futex_offset2 value should > > be used in place of the existing futex_offset. > > The futex interface currently has some races which can only be fixed by > API changes. I'm concerned that we sacrifice the last bit for some > rather obscure feature. What if we need that bit for fixing the > correctness issues? That current approach is going nowhere and if we change the ABI ever then this needs to happen with all *libc folks involved and agreeing. Out of curiosity, what's the race issue vs. robust list which you are trying to solve? Thanks, tglx
