From: "Arnd Bergmann" <arnd@arndb.de>
To: "Paul E. McKenney" <paulmck@kernel.org>
Cc: "Russell King" <linux@armlinux.org.uk>,
"Naresh Kamboju" <naresh.kamboju@linaro.org>,
"open list" <linux-kernel@vger.kernel.org>,
"Linux ARM" <linux-arm-kernel@lists.infradead.org>,
lkft-triage@lists.linaro.org,
"Linux Regressions" <regressions@lists.linux.dev>,
rcu <rcu@vger.kernel.org>,
"Dan Carpenter" <dan.carpenter@linaro.org>,
"Joel Fernandes" <joel@joelfernandes.org>,
eeraj.upadhyay@kernel.org,
"John Ogness" <john.ogness@linutronix.de>,
"Mark Brown" <broonie@kernel.org>
Subject: Re: arm-linux-gnueabihf-ld: kernel/rcu/update.o:update.c:(.text+0x1cc4): more undefined references to `__bad_cmpxchg' follow
Date: Thu, 30 May 2024 20:05:50 +0200 [thread overview]
Message-ID: <38442e3d-1e43-4894-b126-b4258d331a32@app.fastmail.com> (raw)
In-Reply-To: <214a33ac-d4fa-4d48-ad3c-ad8b00ae1a5e@paulmck-laptop>
On Thu, May 30, 2024, at 19:24, Paul E. McKenney wrote:
> On Thu, May 30, 2024 at 09:37:21AM -0700, Paul E. McKenney wrote:
>> On Thu, May 30, 2024 at 03:27:58PM +0200, Arnd Bergmann wrote:
> And for an untested first attempt at a fix.
>
> What did I mess up this time? ;-)
>
I think only the comment:
>
> switch (size) {
> -#ifndef CONFIG_CPU_V6 /* min ARCH >= ARMv6K */
> +#ifdef CONFIG_CPU_V6 /* min ARCH >= ARMv6K */
> + case 1:
> + oldval = cmpxchg_emu_u8((volatile u8 *)ptr, old, new);
> + break;
> +#else
"min ARCH >= ARMv6K" now applies to the #else side, while the
#if side is the early ARMv6 (pre-v6K).
Arnd
next prev parent reply other threads:[~2024-05-30 18:06 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-30 12:20 Naresh Kamboju
2024-05-30 12:26 ` Russell King (Oracle)
2024-05-30 13:27 ` Arnd Bergmann
2024-05-30 16:37 ` Paul E. McKenney
2024-05-30 17:24 ` Paul E. McKenney
2024-05-30 18:05 ` Arnd Bergmann [this message]
2024-05-30 18:21 ` Paul E. McKenney
2024-05-30 21:52 ` Nathan Chancellor
2024-05-30 22:05 ` Paul E. McKenney
2024-05-30 23:30 ` Nathan Chancellor
2024-05-31 0:35 ` Paul E. McKenney
2024-05-31 16:27 ` Nathan Chancellor
2024-05-31 19:42 ` Paul E. McKenney
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