[Ksummit-discuss] [CORE TOPIC] live patching
Jiri Kosina
jkosina at suse.com
Wed Jul 8 21:21:42 UTC 2015
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
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