linux-kernel - Re: [PATCH v2] tools/memory-model: Clarify LKMM's limitations in litmus-tests.txt

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Message-ID: <YshC8sJ4dZq3m2wy@rowland.harvard.edu>
Date:   Fri, 8 Jul 2022 10:45:06 -0400
From:   Alan Stern <stern@...land.harvard.edu>
To:     Marco Elver <elver@...gle.com>
Cc:     Paul Heidekrüger <paul.heidekrueger@...tum.de>,
        Andrea Parri <parri.andrea@...il.com>,
        Will Deacon <will@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Boqun Feng <boqun.feng@...il.com>,
        Nicholas Piggin <npiggin@...il.com>,
        David Howells <dhowells@...hat.com>,
        Jade Alglave <j.alglave@....ac.uk>,
        Luc Maranget <luc.maranget@...ia.fr>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Akira Yokosawa <akiyks@...il.com>,
        Daniel Lustig <dlustig@...dia.com>,
        Joel Fernandes <joel@...lfernandes.org>,
        linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        Charalampos Mainas <charalampos.mainas@...il.com>,
        Pramod Bhatotia <pramod.bhatotia@...tum.de>,
        Soham Chakraborty <s.s.chakraborty@...elft.nl>,
        Martin Fink <martin.fink@...tum.de>
Subject: Re: [PATCH v2] tools/memory-model: Clarify LKMM's limitations in
 litmus-tests.txt

On Fri, Jul 08, 2022 at 01:44:06PM +0200, Marco Elver wrote:
> On Tue, 14 Jun 2022 at 17:49, Paul Heidekrüger
> <paul.heidekrueger@...tum.de> wrote:
> >
> > As discussed, clarify LKMM not recognizing certain kinds of orderings.
> > In particular, highlight the fact that LKMM might deliberately make
> > weaker guarantees than compilers and architectures.
> >
> > Link: https://lore.kernel.org/all/YpoW1deb%2FQeeszO1@ethstick13.dse.in.tum.de/T/#u
> > Signed-off-by: Paul Heidekrüger <paul.heidekrueger@...tum.de>
> > Co-developed-by: Alan Stern <stern@...land.harvard.edu>
> 
> Reviewed-by: Marco Elver <elver@...gle.com>
> 
> However with the Co-developed-by, this is missing Alan's SOB.

For the record:

Signed-off-by: Alan Stern <stern@...land.harvard.edu>

(Note that according to Documentation/process/submitting-patches.rst, 
the submitting author's SOB is supposed to come last.)

Alan