linux-kernel - Re: [PATCH -tip] x86: do_boot_cpu

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Message-ID: <20081022145909.GA7224@elte.hu>
Date:	Wed, 22 Oct 2008 16:59:09 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Cyrill Gorcunov <gorcunov@...il.com>
Cc:	Glauber Costa <glommer@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"Maciej W. Rozycki" <macro@...ux-mips.org>,
	Max Kellermann <mk@...all.com>
Subject: Re: [PATCH -tip] x86: do_boot_cpu - check if we have ESR register


> > | > -		apic_write(APIC_ESR, 0);
> > | > -		apic_read(APIC_ESR);
> > | > +		if (APIC_INTEGRATED(apic_version[phys_apicid])) {
> > | > +			apic_write(APIC_ESR, 0);
> > | > +			apic_read(APIC_ESR);
> > | > +		}

this wouldnt build with certain configs:

arch/x86/kernel/smpboot.c: In function 'do_boot_cpu':
arch/x86/kernel/smpboot.c:897: error: 'phys_apicid' undeclared (first use in this function)
arch/x86/kernel/smpboot.c:897: error: (Each undeclared identifier is reported only once
arch/x86/kernel/smpboot.c:897: error: for each function it appears in.)
include/asm/io_32.h: In function 'memcpy_fromio':

because phys_apicid is not available in the !WAKE_SECONDARY_VIA_INIT 
case. Changed it to boot_cpu_physical_apicid - that should be good 
enough.

	Ingo
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