linux-kernel - Re: [RFC PATCH 0/9] livepatch: consistency model

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Date:	Tue, 10 Mar 2015 17:02:20 -0400 (EDT)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Josh Poimboeuf <jpoimboe@...hat.com>
cc:	Seth Jennings <sjenning@...hat.com>,
	Vojtech Pavlik <vojtech@...e.cz>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	live-patching@...r.kernel.org, linux-kernel@...r.kernel.org,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>, jslaby@...e.cz, mbenes@...e.cz
Subject: Re: [RFC PATCH 0/9] livepatch: consistency model

On Tue, 10 Mar 2015, Josh Poimboeuf wrote:

> Just an update on the status of this RFC.  Thanks to everybody for all 
> the useful comments.  I plan to incorporate the resulting changes in an 
> eventual v2 of this patch set.
> 
> But, as Peter and Ingo have pointed out, stack traces are indeed
> unreliable.  I have some ideas about how to improve them, coming soon in
> another RFC, which will be a prerequisite for this patch set.

Thanks for the update. Just FYI, in parallel, Jiri Slaby (with help from a 
few other people) (added to CC) is working on RFC on a per-thread patching 
on top of the livepatching core, so that we can actually compare pros and 
cons of both aproaches and implementations.

It might still take some time before its finalized and sent out as a RFC, 
as I'd like it to also contain the "fake signal" task handling suggested 
by Ingo. Miroslav is working on that part.

-- 
Jiri Kosina
SUSE Labs
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