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From: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
To: paulmck@kernel.org, torvalds@linux-foundation.org
Cc: linux-kernel@vger.kernel.org, kernel-team@meta.com,
	Bradley Morgan <brads@mainlining.org>,
	Arnd Bergmann <arnd@kernel.org>
Subject: Re: [GIT PULL] Add two-byte cmpxchg emulation function for v7.4
Date: Tue, 20 Oct 2026 20:48:32 +0200	[thread overview]
Message-ID: <2f65337241e230cd26c130bc3183ad230c7c40e4.camel@physik.fu-berlin.de> (raw)
In-Reply-To: <fca9b4b9-75e1-4837-9c73-6f28cb8237e0@paulmck-laptop>

Hi Paul,

On Fri, 2026-10-16 at 20:51 -0700, Paul E. McKenney wrote:
> However, it sadly does not permit easy implementation of all algorithms
> needing on two-byte atomic operations because there are some systems still
> supported by Linux that do not have native two-byte store instructions.
> There is reason to believe that these systems will soon no longer be
> supported by Linux.

Since this paragraph has produced a headline today [1], would you mind
clarifying what you meant here? What architectures are you talking about?

Thanks,
Adrian

> [1] https://www.phoronix.com/news/Linux-7.4-Two-Byte-CMPXCHG

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer
`. `'   Physicist
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913

  reply	other threads:[~2026-10-20 18:48 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-10-17  3:51 Paul E. McKenney
2026-10-20 18:48 ` John Paul Adrian Glaubitz [this message]
2026-10-20 18:54   ` Bradley Morgan
2026-10-20 19:21     ` Paul E. McKenney
2026-10-20 19:26       ` Bradley Morgan
2026-10-20 19:14   ` Paul E. McKenney
2026-10-21  1:08 ` pr-tracker-bot

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