> However, with or without CONFIG_UTRACE, > 6580807da14c423f0d0a708108e6df6ebc8bc83d > is needed on s390 too, otherwise the child gets unnecessary traps.
This confuses me. user_disable_single_step on non-current doesn't do anything not already done by the memset in copy_thread. Ooh, except perhaps it does not clear PSW_MASK_PER. Maybe that matters. That's the only thing I can think of. Maybe Martin can make sense of it. Thanks, Roland
