linux-kernel - Re: [PATCH] x86: fix missing cpu

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Date:	Fri, 31 Oct 2008 09:44:18 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	James Bottomley <James.Bottomley@...senPartnership.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Yinghai Lu <yinghai@...nel.org>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH] x86: fix missing cpu_index initialisation


* Ingo Molnar <mingo@...e.hu> wrote:

> 
> * Ingo Molnar <mingo@...e.hu> wrote:
> 
> > > Depends on [VOYAGER] x86: add ability to test for boot CPU
> > 
> > applied both to tip/x86/urgent:
> > 
> >  6b5496e: x86/voyager: fix missing cpu_index initialisation
> >  3b25aec: x86/voyager: fix compile breakage caused by dc1e35c6e95e8923cf1d35104
> 
> this broke the x86 build:
> 
>  arch/x86/kernel/cpu/common.c: In function 'early_identify_cpu':
>  arch/x86/kernel/cpu/common.c:553: error: 'struct cpuinfo_x86' has no member named 'cpu_index'
> 
> fixed via the patch below.

i just found a third build failure as well, caused by the voyager 
fixes:

 arch/x86/kernel/cpu/common.c: In function 'cpu_init':
 arch/x86/kernel/cpu/common.c:1141: error: 'boot_cpu_id' undeclared (first use in this function)
 arch/x86/kernel/cpu/common.c:1141: error: (Each undeclared identifier is reported only once
 arch/x86/kernel/cpu/common.c:1141: error: for each function it appears in.)

(see the fix below)

this raises the urgency the conversion of x86/Voyager to normal x86 
platform APIs.

	Ingo

---------------->
>From b342797c1e5116a130841527b47dfaa462ed0968 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@...e.hu>
Date: Fri, 31 Oct 2008 09:31:38 +0100
Subject: [PATCH] x86: build fix

Impact: build fix on certain UP configs

fix:

 arch/x86/kernel/cpu/common.c: In function 'cpu_init':
 arch/x86/kernel/cpu/common.c:1141: error: 'boot_cpu_id' undeclared (first use in this function)
 arch/x86/kernel/cpu/common.c:1141: error: (Each undeclared identifier is reported only once
 arch/x86/kernel/cpu/common.c:1141: error: for each function it appears in.)

Pull in asm/smp.h on UP, so that we get the definition of
boot_cpu_id.

Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 arch/x86/kernel/cpu/common.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 003a653..b9c9ea0 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -20,6 +20,7 @@
 #include <asm/pat.h>
 #include <asm/asm.h>
 #include <asm/numa.h>
+#include <asm/smp.h>
 #ifdef CONFIG_X86_LOCAL_APIC
 #include <asm/mpspec.h>
 #include <asm/apic.h>
--
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