Messages in this thread | | | From | Miroslav Benes <> | Subject | [RFC PATCH 0/2] s390/klp: s390 support | Date | Mon, 18 Apr 2016 17:01:08 +0200 |
| |
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(-)
-- 2.8.1
| |