linux-kernel - Re: [PATCH] tools/memory-model: Document herd7 (internal) representation

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Date: Mon, 27 May 2024 15:14:59 +0200
From: Jonas Oberhauser <jonas.oberhauser@...weicloud.com>
To: Hernan Ponce de Leon <hernan.poncedeleon@...weicloud.com>,
 Andrea Parri <parri.andrea@...il.com>, Alan Stern <stern@...land.harvard.edu>
Cc: will@...nel.org, peterz@...radead.org, boqun.feng@...il.com,
 npiggin@...il.com, dhowells@...hat.com, j.alglave@....ac.uk,
 luc.maranget@...ia.fr, paulmck@...nel.org, akiyks@...il.com,
 dlustig@...dia.com, joel@...lfernandes.org, linux-kernel@...r.kernel.org,
 linux-arch@...r.kernel.org
Subject: Re: [PATCH] tools/memory-model: Document herd7 (internal)
 representation



Am 5/27/2024 um 2:25 PM schrieb Hernan Ponce de Leon:
> On 5/24/2024 6:00 PM, Andrea Parri wrote:
>>> What's the difference between R and R*, or between W and W*?
>>
>> AFAIU, herd7 uses such notation, "*", to denote a load or a store which
>> is also in RMW.
> 
> I also got confused with this. What about the following notation?
> 
>      R[once,RMW] ->rmw W[once,RMW]
> 
>>
>>    Andrea
> 



Note that the * is also what herd will show in its graphs.

   jonas