[RFC PATCH 0/2] s390/klp: s390 support

From	Miroslav Benes <mbenes@suse.cz>
Newsgroups	linux.kernel
Subject	[RFC PATCH 0/2] s390/klp: s390 support
Date	2016-04-18 17:10 +0200
Message-ID	<rpiYi-7Ft-9@gated-at.bofh.it> (permalink)
References	<rnPOH-2pl-21@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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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

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[RFC PATCH 0/2] s390/klp: s390 support Miroslav Benes <mbenes@suse.cz> - 2016-04-18 17:10 +0200
  [RFC PATCH 1/2] s390: livepatch, reorganize TIF bits Miroslav Benes <mbenes@suse.cz> - 2016-04-18 17:10 +0200
  Re: [RFC PATCH 0/2] s390/klp: s390 support Josh Poimboeuf <jpoimboe@redhat.com> - 2016-04-18 17:20 +0200

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