On 01/17/2018 11:03 AM, Florian Weimer wrote: > On 01/17/2018 10:48 AM, Martin Schwidefsky wrote: >> rc = syscall(__NR_s390_modify_bp); >> if (rc) { >> perror("s390_modify_bp"); >> exit(EXIT_FAILURE); >> } > > Isn't this traditionally done through personality or prctl? I think we want this per thread (and not per process). So I assume personality will not work out. Can a prctl be done per thread? > > This looks like something other architectures may want as well. Probably.