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

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Message-ID: <20250418123826.GDaAJHwh7mOZM3QeBg@fat_crate.local>
Date: Fri, 18 Apr 2025 14:38:26 +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 02:36:02PM +0200, Dmytro Maluka wrote:
> Yeah, I meant precisely: when compiling with CONFIG_X86_MCE disabled and
> some code enabled that includes asm/extable.h without prior including
> asm/processor.h.
> 
> I encountered that with the out-of-tree-yet code [1] (which is a part of
> a prototype implementation of pKVM on x86) which includes asm/sections.h
> which includes asm/extable.h.

Sorry, come back with this when you can trigger this solely with the upstream
kernel.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette