On Friday 31 August 2018 05:57 AM, Alice Ferrazzi wrote:
On Wed, Aug 29, 2018 at 3:41 AM, Joe Lawrence <joe.lawrence@xxxxxxxxxx> wrote:
On Mon, Aug 27, 2018 at 10:33:51AM +0200, Petr Mladek wrote:
On Fri 2018-08-24 13:21:19, Miroslav Benes wrote:
On Tue, 21 Aug 2018, Jiri Kosina wrote:
On Thu, 2 Aug 2018, Jiri Kosina wrote:
as in previous years (and as discussed with quite a few of you in person),
I've just submitted LPC2018 miniconf proposal for live patching.
For those of you who are planning to attend, please send either me or Josh
(and CC the list) the topic you'd like to get discussed, and your
preliminary statement / confirmation whether you'd be making best effort
to participate.
First, yes, I'd like to participate.
I would like to participate as well.
I would be interested in participating, too.
I would be interested in participating, too.
I would be interested in participating as well.
1. Architecture support.
...
s390x has ftrace with regs support and klp_arch_set_pc() implemented.
objtool and reliable stack traces need to be discussed. Reportedly
some of SUSE's customers have been asking about s390x support
recently.
So, it'd nice to talk about objtool and archs' peculiarities. Especially
if arch maintainers attend the event.
I did some initial plumbing work to port objtool on powerpc, as a
requirement to add per task consistency check on Powerpc. I am
interested in objtool discussions, including powerpc quirks and on
idea's to improve objtool in general. Some improvement ideas were
discussed at:
https://lkml.org/lkml/2017/10/19/633
https://lore.kernel.org/lkml/20170831044209.4hodx2dasad66yab@treble
I'm interested in s390x, but am nowhere near an architecture expert. I
posted a few weeks back [1] regarding the consistency model and my
tinkering with s390x, but got no bites from the linux-s390 mailing list
folks. It would be great if an arch maintainer could stop by for the
event.
[1] https://www.spinics.net/lists/live-patching/msg04465.html
3. Userspace tool for live patches creation ("better kpatch-build").
Nothing new here I'm afraid, but Joao may have some input. Also Nicolai
has been working on the first steps to generate live patches from the
source code approach. It'd interesting to hear about that and discuss its
viability.
AFAIK, Nicolai tried to create an API to transfer state and data between
various versions of livepatches. The primary goal is to keep the
callbacks maintainable. They might need to create, update, take over,
or destroy some data structures according to the actual state
of already installed livepatches.
I would be interested to hear more about the source code based tooling
approach and on ideas about enhancing/making userspace tooling robust.
--
cheers,
Kamalesh.
