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From: Thomas Gleixner <tglx@linutronix.de>
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To: Bagas Sanjaya <bagasdotme@gmail.com>, Linux Kernel Mailing List
 <linux-kernel@vger.kernel.org>, x86@kernel.org
Cc: Uros Bizjak <ubizjak@gmail.com>, Ingo Molnar <mingo@kernel.org>, Linus
 Torvalds <torvalds@linux-foundation.org>, Ingo Molnar <mingo@redhat.com>,
 Borislav Petkov <bp@alien8.de>, Dave Hansen <dave.hansen@linux.intel.com>,
 "H. Peter Anvin" <hpa@zytor.com>, Josh Poimboeuf <jpoimboe@kernel.org>,
 Breno Leitao <leitao@debian.org>, Kent Overstreet
 <kent.overstreet@linux.dev>, Takashi Iwai <tiwai@suse.de>, "Russell King
 (Oracle)" <rmk+kernel@armlinux.org.uk>, Mark Brown <broonie@kernel.org>,
 Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Arnd Bergmann
 <arnd@arndb.de>, Stas Sergeev <stsp2@yandex.ru>, mrwizardwizard
 <terrym3201@protonmail.com>
Subject: Re: Fwd: error: 'const_pcpu_hot' causes a section type conflict
 with 'pcpu_hot' when compiling with -flto
In-Reply-To: <Zq2qQW62G63dr70s@archie.me>
References: <Zq2qQW62G63dr70s@archie.me>
Date: Wed, 07 Aug 2024 16:08:26 +0200
Message-ID: <8734ng4e91.ffs@tglx>
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On Sat, Aug 03 2024 at 10:55, Bagas Sanjaya wrote:
>> when compiling linux kernel 6.9-6.10 with -flto
>>
>> compiler outputs:
>>
>> ./arch/x86/include/asm/current.h:42:25: error: 'const_pcpu_hot' causes a section type conflict with 'pcpu_hot' const_pcpu_hot);
>
> He could reproduce the build error on mainline:

That's caused by:

  ed2f752e0e0a ("x86/percpu: Introduce const-qualified const_pcpu_hot to micro-optimize code generation")

Uros?

Thanks,

        tglx