linux-kernel - Re: [PATCH memory-model] docs: memory-barriers: Add note on compiler transformation and address deps

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Message-ID: <8322165e-c287-6e43-239e-3fcd0b375c1e@huaweicloud.com>
Date:   Fri, 20 Oct 2023 18:13:34 +0200
From:   Jonas Oberhauser <jonas.oberhauser@...weicloud.com>
To:     Akira Yokosawa <akiyks@...il.com>, paulmck@...nel.org
Cc:     linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        linux-doc@...r.kernel.org, Alan Stern <stern@...land.harvard.edu>,
        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>,
        Daniel Lustig <dlustig@...dia.com>,
        Joel Fernandes <joel@...lfernandes.org>,
        Jonathan Corbet <corbet@....net>
Subject: Re: [PATCH memory-model] docs: memory-barriers: Add note on compiler
 transformation and address deps


Am 10/20/2023 um 5:24 PM schrieb Akira Yokosawa:
> Hi Paul,
>
> On 2023/10/20 22:57, Paul E. McKenney wrote:
> [...]
>> So if there are things that rcu_dereference.rst is missing, they do
>> need to be added.
> As far as I can see, there is no mention of "address dependency"
> in rcu_dereference.rst.
> Yes, I see the discussion in rcu_dereference.rst is all about how
> not to break address dependency by proper uses of rcu_dereference()
> and its friends.  But that might not be obvious for readers who
> followed the references placed in memory-barriers.txt.
>
> Using the term "address dependency" somewhere in rcu_dereference.rst
> should help such readers, I guess.


I think that's a good point.


>
> [...]
>>> Thanks for the response, I started thinking my mails aren't getting through
>>> again.
> Jonas, FWIW, your email archived at
>
>      https://lore.kernel.org/linux-doc/1c731fdc-9383-21f2-b2d0-2c879b382687@huaweicloud.com/
>
> didn't reach my gmail inbox.  I looked for it in the spam folder,
> but couldn't find it there either.
>
> Your first reply on Oct 6, which is archived at
>
>      https://lore.kernel.org/linux-doc/4110a58a-8db5-57c4-2f5a-e09ee054baaa@huaweicloud.com/
>
> ended up in my spam folder.
>
> I have no idea why gmail has trouble with your emails so often ...
>
> Anyway, LKML did accept your mails this time.
>
> HTH,
>          Akira


Thanks Akira!

I wrote the gmail support a while ago, but no response.

Currently no idea who to talk to... Oh well.