linux-kernel - Re: [PATCH] x86: fix section mismatch in reference from native_play

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Date:	Mon, 14 Feb 2011 13:25:50 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
	Tejun Heo <tj@...nel.org>,
	Borislav Petkov <borislav.petkov@....com>,
	Suresh Siddha <suresh.b.siddha@...el.com>,
	linux-kernel@...r.kernel.org, Borislav Petkov <bp@...64.org>
Subject: Re: [PATCH] x86: fix section mismatch in reference from
 native_play_dead


* Sergey Senozhatsky <sergey.senozhatsky@...il.com> wrote:

> Fix 
> 
> WARNING: arch/x86/kernel/built-in.o(.text+0x19cde): Section mismatch in reference from 
> the function native_play_dead() to the function .cpuinit.text:mwait_usable()
> The function native_play_dead() references the function __cpuinit mwait_usable().
> 
> 
> Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@...il.com>
> 
> ---
> 
>  arch/x86/kernel/smpboot.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
> index 0cbe8c0..0b8c6c9 100644
> --- a/arch/x86/kernel/smpboot.c
> +++ b/arch/x86/kernel/smpboot.c
> @@ -1467,7 +1467,7 @@ static inline void hlt_play_dead(void)
>  	}
>  }
>  
> -void native_play_dead(void)
> +void __cpuinit native_play_dead(void)
>  {
>  	play_dead_common();
>  	tboot_shutdown(TB_SHUTDOWN_WFS);

I think the right fix is Boris's fix below. Agreed?

Thanks,

	Ingo

>From 1c9d16e35911090dee3f9313e6af13af623d66ee Mon Sep 17 00:00:00 2001
From: Borislav Petkov <bp@...64.org>
Date: Fri, 11 Feb 2011 18:17:54 +0100
Subject: [PATCH] x86: Fix mwait_usable section mismatch

We use it in non __cpuinit code now too so drop marker.

Signed-off-by: Borislav Petkov <borislav.petkov@....com>
LKML-Reference: <20110211171754.GA21047@...ab>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 arch/x86/include/asm/cpu.h |    2 +-
 arch/x86/kernel/process.c  |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/cpu.h b/arch/x86/include/asm/cpu.h
index 6e6e755..4564c8e 100644
--- a/arch/x86/include/asm/cpu.h
+++ b/arch/x86/include/asm/cpu.h
@@ -32,6 +32,6 @@ extern void arch_unregister_cpu(int);
 
 DECLARE_PER_CPU(int, cpu_state);
 
-int __cpuinit mwait_usable(const struct cpuinfo_x86 *);
+int mwait_usable(const struct cpuinfo_x86 *);
 
 #endif /* _ASM_X86_CPU_H */
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index e764fc0..3c189e9 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -506,7 +506,7 @@ static void poll_idle(void)
 #define MWAIT_ECX_EXTENDED_INFO		0x01
 #define MWAIT_EDX_C1			0xf0
 
-int __cpuinit mwait_usable(const struct cpuinfo_x86 *c)
+int mwait_usable(const struct cpuinfo_x86 *c)
 {
 	u32 eax, ebx, ecx, edx;
 
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