From: "Arnd Bergmann" <arnd@kernel.org>
To: "Linus Torvalds" <torvalds@linux-foundation.org>,
"Arnd Bergmann" <arnd@arndb.de>
Cc: "Maciej W. Rozycki" <macro@orcam.me.uk>,
"Paul E. McKenney" <paulmck@kernel.org>,
"John Paul Adrian Glaubitz" <glaubitz@physik.fu-berlin.de>,
linux-alpha@vger.kernel.org,
"Richard Henderson" <richard.henderson@linaro.org>,
"Ivan Kokshaysky" <ink@jurassic.park.msu.ru>,
"Matt Turner" <mattst88@gmail.com>,
"Alexander Viro" <viro@zeniv.linux.org.uk>,
"Marc Zyngier" <maz@kernel.org>,
linux-kernel@vger.kernel.org, "Michael Cree" <mcree@orcon.net.nz>,
"Frank Scheiner" <frank.scheiner@web.de>
Subject: Re: [PATCH 00/14] alpha: cleanups for 6.10
Date: Fri, 31 May 2024 18:54:54 +0200 [thread overview]
Message-ID: <1d926855-ef1f-4cdc-bccf-2286b012c2eb@app.fastmail.com> (raw)
In-Reply-To: <CAHk-=wimJ2hQhKSq7+4O1EHtkg7eFBwY+fygxD+6sjWqgyDMTQ@mail.gmail.com>
On Fri, May 31, 2024, at 18:32, Linus Torvalds wrote:
> On Fri, 31 May 2024 at 08:48, Arnd Bergmann <arnd@arndb.de> wrote:
>
> and the solution would be to make a __WRITE_ONCE() that then uses
> "sizeof()" to decide at compile-time whether it can just do it as a
> regular write, or whether it needs to do it as a LL/SC loop.
Just to clarify: I did not mean to suggest we actually
apply the patch from my email or anything close to it, this was
meant as a demonstration for instances that are likely broken but
each one would need to be individually documented if we were to
try to fix them, as Maciej asked about what it would take.
My "alpha: drop pre-EV56 support" actually removed two workarounds
for non-BWX alphas, and neither of them even uses WRITE_ONCE,
so these would also have gone unnoticed by any changes we do
to WRITE_ONCE.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/include/linux/?id=a4184174be36369c3af8d937e165f28a43ef1e02
Arnd
next prev parent reply other threads:[~2024-05-31 16:55 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-03 8:11 [PATCH 00/14] alpha: cleanups for 6.10 Arnd Bergmann
2024-05-03 8:11 ` [PATCH 01/14] alpha: sort scr_mem{cpy,move}w() out Arnd Bergmann
2024-05-03 8:11 ` [PATCH 02/14] alpha: fix modversions for strcpy() et.al Arnd Bergmann
2024-05-03 8:11 ` [PATCH 03/14] alpha: add clone3() support Arnd Bergmann
2024-05-03 8:11 ` [PATCH 04/14] alpha: don't make functions public without a reason Arnd Bergmann
2024-05-03 8:11 ` [PATCH 05/14] alpha: sys_sio: fix misspelled ifdefs Arnd Bergmann
2024-05-03 8:11 ` [PATCH 06/14] alpha: missing includes Arnd Bergmann
2024-05-03 8:11 ` [PATCH 07/14] alpha: core_lca: take the unused functions out Arnd Bergmann
2024-05-03 8:11 ` [PATCH 08/14] alpha: jensen, t2 - make __EXTERN_INLINE same as for the rest Arnd Bergmann
2024-05-03 8:11 ` [PATCH 09/14] alpha: trim the unused stuff from asm-offsets.c Arnd Bergmann
2024-05-03 8:11 ` [PATCH 10/14] alpha: remove DECpc AXP150 (Jensen) support Arnd Bergmann
2024-05-03 16:07 ` Linus Torvalds
2024-05-03 17:00 ` Al Viro
2024-05-03 20:07 ` Arnd Bergmann
2024-05-03 8:11 ` [PATCH 11/14] alpha: sable: remove early machine support Arnd Bergmann
2024-05-03 8:11 ` [PATCH 12/14] alpha: remove LCA and APECS based machines Arnd Bergmann
2024-05-03 8:11 ` [PATCH 13/14] alpha: cabriolet: remove EV5 CPU support Arnd Bergmann
2024-05-03 8:11 ` [PATCH 14/14] alpha: drop pre-EV56 support Arnd Bergmann
2024-05-04 15:00 ` Richard Henderson
2024-05-06 10:06 ` Arnd Bergmann
2024-06-03 6:02 ` Jiri Slaby
2024-06-04 13:58 ` Greg KH
2024-05-03 16:06 ` [PATCH 00/14] alpha: cleanups for 6.10 Matt Turner
2024-05-03 20:15 ` Arnd Bergmann
2024-05-06 9:16 ` Michael Cree
2024-05-06 10:11 ` Arnd Bergmann
2024-05-03 16:53 ` John Paul Adrian Glaubitz
2024-05-03 17:19 ` Paul E. McKenney
2024-05-27 23:49 ` Maciej W. Rozycki
2024-05-28 14:43 ` Paul E. McKenney
2024-05-29 18:50 ` Maciej W. Rozycki
2024-05-29 22:09 ` Paul E. McKenney
2024-05-30 22:59 ` Maciej W. Rozycki
2024-05-31 3:56 ` Maciej W. Rozycki
2024-05-31 19:33 ` Paul E. McKenney
2024-06-03 16:22 ` Maciej W. Rozycki
2024-06-03 17:08 ` Paul E. McKenney
2024-07-01 23:50 ` Maciej W. Rozycki
2024-05-30 1:08 ` Linus Torvalds
2024-05-30 22:57 ` Maciej W. Rozycki
2024-05-31 0:10 ` Linus Torvalds
2024-06-03 11:09 ` Maciej W. Rozycki
2024-06-03 11:36 ` John Paul Adrian Glaubitz
2024-06-03 16:57 ` Linus Torvalds
2024-07-01 23:48 ` Maciej W. Rozycki
2024-05-31 15:48 ` Arnd Bergmann
2024-05-31 16:32 ` Linus Torvalds
2024-05-31 16:54 ` Arnd Bergmann [this message]
2024-06-01 13:51 ` David Laight
2024-07-01 23:48 ` Maciej W. Rozycki
2024-07-02 1:13 ` Linus Torvalds
2024-07-03 0:12 ` Maciej W. Rozycki
2024-07-03 0:50 ` Linus Torvalds
2024-07-04 22:21 ` Maciej W. Rozycki
2024-06-03 11:33 ` Maciej W. Rozycki
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