Date: Sun, 22 Feb 2015 20:03:04 +0100 (CET)
From: Jiri Kosina <jkosina@suse.cz>
To: Josh Poimboeuf <jpoimboe@redhat.com>
cc: Ingo Molnar <mingo@kernel.org>, Vojtech Pavlik <vojtech@suse.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Ingo Molnar <mingo@redhat.com>, Seth Jennings <sjenning@redhat.com>,
        linux-kernel@vger.kernel.org,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Arjan van de Ven <arjan@infradead.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>,
        Borislav Petkov <bp@alien8.de>, live-patching@vger.kernel.org
Subject: Re: live kernel upgrades (was: live kernel patching design)
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On Sun, 22 Feb 2015, Josh Poimboeuf wrote:

> Yes, there have been some suggestions that we should support multiple 
> consistency models, but I haven't heard any good reasons that would 
> justify the added complexity.

I tend to agree, consistency models were just a temporary idea that seems 
to likely become unnecessary given all the ideas on the unified solution 
that have been presented so far.

(Well, with a small exception to this -- I still think we should be able 
to "fire and forget" for patches where it's guaranteed that no 
housekeeping is necessary -- my favorite example is again fixing out of 
bounds access in a certain syscall entry ... i.e. the "super-simple" 
consistency model).

-- 
Jiri Kosina
SUSE Labs
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