From: Jiri Kosina <jkosina@suse.com>
To: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: ksummit-discuss@lists.linuxfoundation.org
Subject: Re: [Ksummit-discuss] [CORE TOPIC] live patching
Date: Wed, 8 Jul 2015 23:21:42 +0200 (CEST) [thread overview]
Message-ID: <alpine.LNX.2.00.1507082319250.10183@pobox.suse.cz> (raw)
In-Reply-To: <559D4C35.6070709@hitachi.com>
On Thu, 9 Jul 2015, Masami Hiramatsu wrote:
> > - stack unwinding has so far been deemed purely debugging facility, with
> > no correctness guarantees whatsoever. One of the possible aproaches to
> > improving the coverage of live patching infrastructure would assume
> > 100% reliability of in-kernel stack unwinding.
> >
> > Is this something that should be pursued further? Especially opinions
> > and comments from various arch maintainers would be welcome
>
> Yeah, at least the live patch would be better to depend on a frame-pointer
> to improve correctness...
I actually think that Josh is planning to add dwarf2 CFI support as well
(but yes, first step is getting frame pointer based unwinding to work
properly).
Thanks,
--
Jiri Kosina
SUSE Labs
next prev parent reply other threads:[~2015-07-08 21:22 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-07 20:42 Jiri Kosina
2015-07-08 16:13 ` Masami Hiramatsu
2015-07-08 21:21 ` Jiri Kosina [this message]
2015-07-09 3:26 ` Kamezawa Hiroyuki
2015-07-09 9:56 ` Jiri Kosina
2015-07-09 10:05 ` Kamezawa Hiroyuki
2015-10-12 17:13 ` Theodore Ts'o
2015-10-13 9:29 ` Jiri Kosina
2015-10-16 19:34 ` Jiri Kosina
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