linux-kernel - [RFC PATCH v2 0/3] livepatch: Clear relocation targets on a module removal

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Date:   Thu,  5 Sep 2019 14:45:11 +0200
From:   Miroslav Benes <mbenes@...e.cz>
To:     jikos@...nel.org, jpoimboe@...hat.com, pmladek@...e.com
Cc:     joe.lawrence@...hat.com, nstange@...e.de,
        live-patching@...r.kernel.org, linux-kernel@...r.kernel.org,
        Miroslav Benes <mbenes@...e.cz>
Subject: [RFC PATCH v2 0/3] livepatch: Clear relocation targets on a module removal

Updated version with Petr's feedback. It looks a bit different and
better now (I would say). Not that it should be considered before we
decide what to do with late module patching, but I finished it before
the discussion started and someone could be interested.

v1: http://lore.kernel.org/r/20190719122840.15353-1-mbenes@suse.cz

Tested on x86_64, ppc64le and s390x. Cross-compiled on arm64 to verify
that nothing is broken.

[1] 20180602161151.apuhs2dygsexmcg2@...ble
[2] 1561019068-132672-1-git-send-email-cj.chengjian@...wei.com
[3] 20180607092949.1706-1-mbenes@...e.cz

Miroslav Benes (3):
  livepatch: Clear relocation targets on a module removal
  livepatch: Unify functions for writing and clearing object relocations
  livepatch: Clean up klp_update_object_relocations() return paths

 arch/powerpc/kernel/module_64.c | 45 +++++++++++++++++++++++++
 arch/s390/kernel/module.c       |  8 +++++
 arch/x86/kernel/module.c        | 43 ++++++++++++++++++++++++
 include/linux/moduleloader.h    |  7 ++++
 kernel/livepatch/core.c         | 58 ++++++++++++++++++++++++---------
 5 files changed, 146 insertions(+), 15 deletions(-)

-- 
2.23.0