linux-kernel - Re: [PATCH] x86/extable: include asm/processor.h for cpu

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Message-ID: <20250418121203.GBaAJBk9bOo7ad1d4L@fat_crate.local>
Date: Fri, 18 Apr 2025 14:12:03 +0200
From: Borislav Petkov <bp@...en8.de>
To: Dmytro Maluka <dmaluka@...omium.org>
Cc: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@...nel.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Yue Haibing <yuehaibing@...wei.com>,
	"open list:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86/extable: include asm/processor.h for cpu_relax()

On Fri, Apr 18, 2025 at 11:57:00AM +0000, Dmytro Maluka wrote:
> Include asm/processor.h to prevents compilation failures due to implicit
> declaration of cpu_relax() in ex_handler_msr_mce() when compiling with
> CONFIG_X86_MCE disabled.

Builds fine here:

$ grep X86_MCE .config
# CONFIG_X86_MCE is not set

$ make -j...
...

  OBJCOPY arch/x86/boot/setup.bin
  BUILD   arch/x86/boot/bzImage
Kernel: arch/x86/boot/bzImage is ready  (#1)
$

-- 
Regards/Gruss,
    Boris.

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