From: Andreas Schwab <schwab@linux-m68k.org>
To: Brad Boyer <flar@allandria.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
Finn Thain <fthain@linux-m68k.org>,
Peter Zijlstra <peterz@infradead.org>,
Will Deacon <will@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Boqun Feng <boqun.feng@gmail.com>,
Jonathan Corbet <corbet@lwn.net>,
Mark Rutland <mark.rutland@arm.com>,
linux-kernel@vger.kernel.org,
Linux-Arch <linux-arch@vger.kernel.org>,
Geert Uytterhoeven <geert@linux-m68k.org>,
linux-m68k@vger.kernel.org
Subject: Re: [RFC v2 3/3] atomic: Add alignment check to instrumented atomic operations
Date: Wed, 17 Sep 2025 18:54:41 +0200 [thread overview]
Message-ID: <877bxx10ku.fsf@igel.home> (raw)
In-Reply-To: <20250916213858.GA12681@allandria.com> (Brad Boyer's message of "Tue, 16 Sep 2025 14:38:58 -0700")
On Sep 16 2025, Brad Boyer wrote:
> I believe it depends on the exact CPU. The 68060 user manual has a
> section called "Emulating CAS2 and CAS Misaligned" discussing the
> handling of such instances through software emulation. The 68040
> user manual doesn't have any similar section.
The 68040 still handles them in hardware.
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1
"And now for something completely different."
next prev parent reply other threads:[~2025-09-17 17:05 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-14 0:45 [RFC v2 0/3] Align atomic storage Finn Thain
2025-09-14 0:45 ` [RFC v2 2/3] atomic: Specify alignment for atomic_t and atomic64_t Finn Thain
2025-09-15 7:13 ` Geert Uytterhoeven
2025-09-15 7:35 ` Arnd Bergmann
2025-09-15 8:06 ` Peter Zijlstra
2025-09-15 9:26 ` Finn Thain
2025-09-15 9:29 ` Arnd Bergmann
2025-09-22 7:06 ` Geert Uytterhoeven
2025-09-22 8:16 ` Finn Thain
2025-09-22 9:29 ` Geert Uytterhoeven
2025-09-22 15:21 ` Arnd Bergmann
2025-09-23 6:28 ` Finn Thain
2025-09-23 6:41 ` Arnd Bergmann
2025-09-23 8:05 ` Finn Thain
2025-09-23 19:11 ` Arnd Bergmann
2025-09-30 2:18 ` Finn Thain
2025-09-30 6:35 ` Arnd Bergmann
2025-10-01 1:03 ` Finn Thain
2025-10-01 6:44 ` Arnd Bergmann
2025-10-06 9:25 ` Finn Thain
2025-10-06 9:25 ` Finn Thain
2025-10-06 10:07 ` Arnd Bergmann
2025-10-06 10:22 ` Peter Zijlstra
2025-10-06 11:09 ` Arnd Bergmann
2025-10-06 9:37 ` Peter Zijlstra
2025-09-30 7:41 ` Geert Uytterhoeven
2025-10-01 1:46 ` Finn Thain
2025-10-01 7:08 ` Geert Uytterhoeven
2025-09-14 0:45 ` [RFC v2 3/3] atomic: Add alignment check to instrumented atomic operations Finn Thain
2025-09-15 8:00 ` Peter Zijlstra
2025-09-15 9:38 ` Finn Thain
2025-09-15 10:06 ` Peter Zijlstra
2025-09-15 10:37 ` Finn Thain
2025-09-15 11:20 ` Arnd Bergmann
2025-09-16 0:16 ` Finn Thain
2025-09-16 10:10 ` Geert Uytterhoeven
2025-09-17 1:23 ` Finn Thain
2025-09-16 12:37 ` Arnd Bergmann
2025-09-16 21:38 ` Brad Boyer
2025-09-17 16:54 ` Andreas Schwab [this message]
2025-09-17 2:14 ` Finn Thain
2025-09-22 15:49 ` Arnd Bergmann
2025-09-23 6:39 ` Finn Thain
2025-09-14 0:45 ` [RFC v2 1/3] documentation: Discourage alignment assumptions Finn Thain
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