* Mathieu Desnoyers: > Allow rseq critical section abort handlers to optionally figure out at > which instruction pointer the rseq critical section was aborted. > > This allows implementing rseq critical sections containing loops, in > which case the commit side-effect cannot be the last instruction. This > is useful to implement adaptative mutexes aware of preemption in > user-space. (see [1]) Could you write the program counter to the rseq area instead? This would avoid discussing which register to clobber. Thanks, Florian
