On Mon, Apr 18, 2016 at 05:01:08PM +0200, Miroslav Benes wrote: > So this is something we have in kGraft for a while (though the actual > implementation in s390's entry.S differs). > > The first patch is needed because we want our TIF flag to be part of > _TIF_WORK and s390's tm instruction tests only 8-bits. > > The second patch adds a call to klp_update_task_universe() to entry.S. > Specifically to syscall and interrupt return paths. > > WARNING: It is only compile-tested. It even cannot be linked, because > klp_update_task_universe() is static inline. Josh, you're gonna change > this part anyway to remove TIF_KLP_NEED_UPDATE from arch-independent > code, aren't you? > > Comments are obviously welcome. s390 maintainters not CC'ed yet. > > Jiri Slaby (1): > s390: livepatch, reorganize TIF bits > > Miroslav Benes (1): > s390/klp: update task universe when exiting kernel > > arch/s390/include/asm/thread_info.h | 24 ++++++++++++++++-------- > arch/s390/kernel/entry.S | 31 ++++++++++++++++++++++++++++++- > 2 files changed, 46 insertions(+), 9 deletions(-) Yeah, I think I will need to do something like change klp_update_task_universe() to be non-inline. Thanks a lot for the code! -- Josh -- To unsubscribe from this list: send the line "unsubscribe live-patching" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
