From: Rusty Russell <rusty@rustcorp.com.au>
To: Jessica Yu <jeyu@redhat.com>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Seth Jennings <sjenning@redhat.com>,
Jiri Kosina <jikos@kernel.org>, Vojtech Pavlik <vojtech@suse.com>,
Miroslav Benes <mbenes@suse.cz>, Petr Mladek <pmladek@suse.com>
Cc: Steven Rostedt <rostedt@goodmis.org>,
live-patching@vger.kernel.org, linux-kernel@vger.kernel.org,
Jessica Yu <jeyu@redhat.com>
Subject: Re: [PATCH 0/3] Livepatch module notifier cleanup
Date: Thu, 10 Mar 2016 13:57:32 +1030 [thread overview]
Message-ID: <878u1rko63.fsf@rustcorp.com.au> (raw)
In-Reply-To: <1457561637-24770-1-git-send-email-jeyu@redhat.com>
Jessica Yu <jeyu@redhat.com> writes:
> These are the remaining 3 patches that came from the original ftrace/livepatch
> module notifier patchset found here: https://lkml.org/lkml/2016/2/8/1180
Please add my Acked-by to the first and third.
Cheers,
Rusty.
> Basically, the patchset does a bit of module.c cleanup (patch 1 and 2) in
> preparation for the klp_module_{coming,going} calls (patch 3). We decided
> to stop relying on the module notifier callchain in favor of hard-coding
> the appropriate livepatch function calls that handle coming and going
> modules. Hard-coding these calls will guarantee that ftrace and livepatch
> exit/initialization routines are called in the correct order without
> relying on module notifiers.
>
> The patches should be nearly exactly the same as those from the previous
> discussion, except in patch 3 I've added back the #if IS_ENABLED(CONFIG_LIVEPATCH)
> guard in livepatch.h, and in patch 2 I decided that it might be safer to
> change mod->state with the module mutex held.
>
> Patches based on linux-next.
>
> Previous discussion found here: https://lkml.org/lkml/2016/2/8/1180
>
> Jessica Yu (3):
> modules: split part of complete_formation() into prepare_coming_module()
> modules: set mod->state to GOING before going notifiers are called
> livepatch/module: remove livepatch module notifier
>
> include/linux/livepatch.h | 13 +++++
> kernel/livepatch/core.c | 145 ++++++++++++++++++++++------------------------
> kernel/module.c | 39 ++++++++++---
> 3 files changed, 113 insertions(+), 84 deletions(-)
>
> --
> 2.4.3
prev parent reply other threads:[~2016-03-10 3:28 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-09 22:13 [PATCH 0/3] Livepatch module notifier cleanup Jessica Yu
2016-03-09 22:13 ` [PATCH 1/3] modules: split part of complete_formation() into prepare_coming_module() Jessica Yu
2016-03-10 22:41 ` Josh Poimboeuf
2016-03-09 22:13 ` [PATCH 2/3] modules: set mod->state to GOING before going notifiers are called Jessica Yu
2016-03-10 3:27 ` Rusty Russell
2016-03-10 5:08 ` Jessica Yu
2016-03-09 22:13 ` [PATCH 3/3] livepatch/module: remove livepatch module notifier Jessica Yu
2016-03-10 22:45 ` Josh Poimboeuf
2016-03-10 3:27 ` Rusty Russell [this message]
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