linux-kernel - Re: [PATCH v2] tools: memory-model: Make plain accesses carry dependencies

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Date:   Sat, 3 Dec 2022 15:34:20 -0500
From:   "stern@...land.harvard.edu" <stern@...land.harvard.edu>
To:     "Paul E. McKenney" <paulmck@...nel.org>
Cc:     Jonas Oberhauser <jonas.oberhauser@...wei.com>,
        Boqun Feng <boqun.feng@...il.com>,
        "parri.andrea@...il.com" <parri.andrea@...il.com>,
        "will@...nel.org" <will@...nel.org>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "npiggin@...il.com" <npiggin@...il.com>,
        "dhowells@...hat.com" <dhowells@...hat.com>,
        "j.alglave@....ac.uk" <j.alglave@....ac.uk>,
        "luc.maranget@...ia.fr" <luc.maranget@...ia.fr>,
        "akiyks@...il.com" <akiyks@...il.com>,
        "dlustig@...dia.com" <dlustig@...dia.com>,
        "joel@...lfernandes.org" <joel@...lfernandes.org>,
        "urezki@...il.com" <urezki@...il.com>,
        "quic_neeraju@...cinc.com" <quic_neeraju@...cinc.com>,
        "frederic@...nel.org" <frederic@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] tools: memory-model: Make plain accesses carry
 dependencies

On Sat, Dec 03, 2022 at 11:02:26AM -0800, Paul E. McKenney wrote:
> On Sat, Dec 03, 2022 at 11:58:36AM +0000, Jonas Oberhauser wrote:
> > 
> > 
> > -----Original Message-----
> > From: Boqun Feng [mailto:boqun.feng@...il.com] 
> > Sent: Friday, December 2, 2022 7:50 PM
> 
> > > I wonder is this patch a first step to solve the OOTA problem you reported in OSS:
> > >	https://static.sched.com/hosted_files/osseu2022/e1/oss-eu22-jonas.pdf
> > > If so maybe it's better to put the link in the commit log I think.
> > 
> > It's not directly related to that specific problem, it does solve some other OOTA issues though.
> > If you think we should link to the talk, there's also a video with slightly more updated slides from the actual talk: https://www.youtube.com/watch?v=iFDKhIxKhoQ
> > do you think I should link to both then?
> 
> It is not hard for me to add that in if people believe that it should be
> included.  But default is lazy in this case.  ;-)

I don't think there's any need to mention that video in the commit log.  
It's an introductory talk, and it's pretty safe to assume that anyone 
reading the commit because they are interested in the LKMM in great 
detail is already beyond the introductory level.

On the other hand, it wouldn't hurt to include a Link: tag to an 
appropriate message in this email thread.  (I leave it up to Paul to 
decide which message is most "appropriate" -- there may not be a good 
candidate, because a lot of the messages were not CC'ed to LKML.)

Alan