linux-kernel - Re: livepatch: change to a per-task consistency model

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Message-ID: <alpine.LNX.2.00.1605182221420.31937@cbobk.fhfr.pm>
Date:	Wed, 18 May 2016 22:22:33 +0200 (CEST)
From:	Jiri Kosina <jikos@...nel.org>
To:	Josh Poimboeuf <jpoimboe@...hat.com>
cc:	Jessica Yu <jeyu@...hat.com>, Miroslav Benes <mbenes@...e.cz>,
	Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Michael Ellerman <mpe@...erman.id.au>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	live-patching@...r.kernel.org, linux-kernel@...r.kernel.org,
	x86@...nel.org, linuxppc-dev@...ts.ozlabs.org,
	linux-s390@...r.kernel.org, Vojtech Pavlik <vojtech@...e.com>,
	Jiri Slaby <jslaby@...e.cz>, Petr Mladek <pmladek@...e.com>,
	Chris J Arges <chris.j.arges@...onical.com>,
	Andy Lutomirski <luto@...nel.org>
Subject: Re: livepatch: change to a per-task consistency model

On Wed, 18 May 2016, Josh Poimboeuf wrote:

> Yeah, I think this situation -- a task sleeping on an affected function 
> in uninterruptible state for a long period of time -- would be 
> exceedingly rare and not something we need to worry about for now.

Plus in case task'd be in TASK_UNINTERRUPTIBLE for more than 120s, hung 
task detector would trigger anyway.

-- 
Jiri Kosina
SUSE Labs