linux-kernel - Re: [PATCH v6 tip/core/locking 3/8] Documentation/memory-barriers.txt: Prohibit speculative writes

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Message-ID: <20131213141819.GN21999@twins.programming.kicks-ass.net>
Date:	Fri, 13 Dec 2013 15:18:19 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:	Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org,
	laijs@...fujitsu.com, dipankar@...ibm.com,
	akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
	josh@...htriplett.org, niv@...ibm.com, tglx@...utronix.de,
	rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
	darren@...art.com, fweisbec@...il.com, oleg@...hat.com,
	sbw@....edu, Linux-Arch <linux-arch@...r.kernel.org>
Subject: Re: [PATCH v6 tip/core/locking 3/8]
 Documentation/memory-barriers.txt: Prohibit speculative writes

On Thu, Dec 12, 2013 at 07:08:44AM -0800, Paul E. McKenney wrote:
> On Thu, Dec 12, 2013 at 02:17:10PM +0100, Ingo Molnar wrote:
> > 
> > * Paul E. McKenney <paulmck@...ux.vnet.ibm.com> wrote:
> > 
> > > From: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
> > > 
> > > No SMP architecture currently supporting Linux allows speculative writes,
> > > so this commit updates Documentation/memory-barriers.txt to prohibit
> > > them in Linux core code.  It also records restrictions on their use.
> > > 
> > > Signed-off-by: Peter Zijlstra <peterz@...radead.org>
> > > Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
> > 
> > The signoff sequence looks weird here. If this came from Peter 
> > originally, did you mean:
> > 
> >   From: Peter Zijlstra <peterz@...radead.org>
> > 
> > instead of "From: Paul ..." ?
> 
> Indeed I did!  I will fix.

Well Paul did rewrite the entire thing into something far better than
what I started out with. I don't mind him dropping my SOB over his own.
I'll settle for an reviewed-by on this ;-)
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