linux-kernel - Re: [PATCH RFC memory-model 0/6] LKMM updates

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Message-ID: <20190109231852.GA4494@andrea>
Date:   Thu, 10 Jan 2019 00:18:53 +0100
From:   Andrea Parri <andrea.parri@...rulasolutions.com>
To:     "Paul E. McKenney" <paulmck@...ux.ibm.com>
Cc:     linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        mingo@...nel.org, stern@...land.harvard.edu,
        parri.andrea@...il.com, will.deacon@....com, peterz@...radead.org,
        boqun.feng@...il.com, npiggin@...il.com, dhowells@...hat.com,
        j.alglave@....ac.uk, luc.maranget@...ia.fr, akiyks@...il.com,
        willy@...radead.org
Subject: Re: [PATCH RFC memory-model 0/6] LKMM updates

On Wed, Jan 09, 2019 at 01:07:06PM -0800, Paul E. McKenney wrote:
> Hello!
> 
> This series contains updates for the Linux-kernel memory model:
> 
> 1-3.	Add SRCU support, courtesy of Alan Stern.
> 
> 4.	Update README for adding of SRCU support.
> 
> 5.	Update memory-barriers.txt on enforcing heavy ordering for
> 	port-I/O accesses, courtesy of Will Deacon.  This one needs
> 	an ack, preferably by someone from Intel.  Matthew Wilcox
> 	posted some feedback from an Intel manual here, which might
> 	be considered to be a close substitute, but...  ;-)
> 
> 	http://lkml.kernel.org/r/20181127192234.GF10377@bombadil.infradead.org
> 
> 6.	Update Documentation/explanation.txt to include SRCU support,
> 	courtesy of Alan Stern.
> 
> 7.	Dynamically check SRCU lock-to-unlock matching, courtesy of
> 	Luc Maranget.  This needs an ack.

It seems that

  1b52d0186177 ("tools/memory-model: Model smp_mb__after_unlock_lock()")
  
from linux-rcu/dev got lost; this also needs an ack (probably yours! ;D,
considered that, IIRC, you introduced the primitive and RCU is currently
its only user.)

  Andrea


> 
> 							Thanx, Paul
> 
> ------------------------------------------------------------------------
> 
>  Documentation/memory-barriers.txt                |    6 
>  tools/memory-model/Documentation/explanation.txt |  289 ++++++++++++-----------
>  tools/memory-model/README                        |   25 +
>  tools/memory-model/linux-kernel.bell             |   37 ++
>  tools/memory-model/linux-kernel.cat              |   55 ++--
>  tools/memory-model/linux-kernel.def              |    7 
>  6 files changed, 250 insertions(+), 169 deletions(-)
>