From: Thomas Gleixner <tglx@linutronix.de>
To: Nick Desaulniers <ndesaulniers@google.com>,
linux-arm-kernel@lists.infradead.org
Cc: llvm@lists.linux.dev,
"Nick Desaulniers" <ndesaulniers@google.com>,
"Arnd Bergmann" <arnd@arndb.de>,
"Nathan Chancellor" <nathan@kernel.org>,
"Russell King" <linux@armlinux.org.uk>,
"Geert Uytterhoeven" <geert+renesas@glider.be>,
"Linus Walleij" <linus.walleij@linaro.org>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Anshuman Khandual" <anshuman.khandual@arm.com>,
"Ard Biesheuvel" <ardb@kernel.org>,
"YiFei Zhu" <yifeifz2@illinois.edu>,
"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
"Mike Rapoport" <rppt@kernel.org>,
linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com
Subject: Re: [PATCH] ARM: select HAVE_FUTEX_CMPXCHG
Date: Tue, 31 Aug 2021 01:17:45 +0200 [thread overview]
Message-ID: <87czpufrom.ffs@tglx> (raw)
In-Reply-To: <20210830213846.2609349-1-ndesaulniers@google.com>
On Mon, Aug 30 2021 at 14:38, Nick Desaulniers wrote:
> tglx notes:
> This function [futex_detect_cmpxchg] is only needed when an
> architecture has to runtime discover whether the CPU supports it or
> not. ARM has unconditional support for this, so the obvious thing to
> do is the below.
>
> Fixes linkage failure from Clang randconfigs:
> kernel/futex.o:(.text.fixup+0x5c): relocation truncated to fit: R_ARM_JUMP24 against `.init.text'
> and boot failures for CONFIG_THUMB2_KERNEL.
>
> Link: https://github.com/ClangBuiltLinux/linux/issues/325
> Reported-by: Arnd Bergmann <arnd@arndb.de>
> Reported-by: Nathan Chancellor <nathan@kernel.org>
> Suggested-by: Thomas Gleixner <tglx@linutronix.de>
> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
WARNING: multiple messages have this Message-ID (diff)
From: Thomas Gleixner <tglx@linutronix.de>
To: Nick Desaulniers <ndesaulniers@google.com>,
linux-arm-kernel@lists.infradead.org
Cc: llvm@lists.linux.dev,
"Nick Desaulniers" <ndesaulniers@google.com>,
"Arnd Bergmann" <arnd@arndb.de>,
"Nathan Chancellor" <nathan@kernel.org>,
"Russell King" <linux@armlinux.org.uk>,
"Geert Uytterhoeven" <geert+renesas@glider.be>,
"Linus Walleij" <linus.walleij@linaro.org>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Anshuman Khandual" <anshuman.khandual@arm.com>,
"Ard Biesheuvel" <ardb@kernel.org>,
"YiFei Zhu" <yifeifz2@illinois.edu>,
"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
"Mike Rapoport" <rppt@kernel.org>,
linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com
Subject: Re: [PATCH] ARM: select HAVE_FUTEX_CMPXCHG
Date: Tue, 31 Aug 2021 01:17:45 +0200 [thread overview]
Message-ID: <87czpufrom.ffs@tglx> (raw)
In-Reply-To: <20210830213846.2609349-1-ndesaulniers@google.com>
On Mon, Aug 30 2021 at 14:38, Nick Desaulniers wrote:
> tglx notes:
> This function [futex_detect_cmpxchg] is only needed when an
> architecture has to runtime discover whether the CPU supports it or
> not. ARM has unconditional support for this, so the obvious thing to
> do is the below.
>
> Fixes linkage failure from Clang randconfigs:
> kernel/futex.o:(.text.fixup+0x5c): relocation truncated to fit: R_ARM_JUMP24 against `.init.text'
> and boot failures for CONFIG_THUMB2_KERNEL.
>
> Link: https://github.com/ClangBuiltLinux/linux/issues/325
> Reported-by: Arnd Bergmann <arnd@arndb.de>
> Reported-by: Nathan Chancellor <nathan@kernel.org>
> Suggested-by: Thomas Gleixner <tglx@linutronix.de>
> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
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next prev parent reply other threads:[~2021-08-30 23:24 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-30 21:38 [PATCH] ARM: select HAVE_FUTEX_CMPXCHG Nick Desaulniers
2021-08-30 21:38 ` Nick Desaulniers
2021-08-30 23:17 ` Thomas Gleixner [this message]
2021-08-30 23:17 ` Thomas Gleixner
2021-08-30 23:31 ` Nathan Chancellor
2021-08-30 23:31 ` Nathan Chancellor
2021-09-16 22:40 ` Linus Walleij
2021-09-16 22:40 ` Linus Walleij
2021-09-16 23:26 ` Nick Desaulniers
2021-09-16 23:26 ` Nick Desaulniers
2021-09-17 7:11 ` Arnd Bergmann
2021-09-17 7:11 ` Arnd Bergmann
2021-09-17 20:33 ` Arnd Bergmann
2021-09-17 20:33 ` Arnd Bergmann
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