linux-kernel - Re: [PATCH 1/4] x86: cleanup early per cpu variables/accesses v3-folded

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Date:	Tue, 22 Apr 2008 15:59:44 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Mike Travis <travis@....com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] x86: cleanup early per cpu variables/accesses
	v3-folded


* Mike Travis <travis@....com> wrote:

>   * Introduce a new PER_CPU macro called "EARLY_PER_CPU".  This is
>     used by some per_cpu variables that are initialized and accessed
>     before there are per_cpu areas allocated.

build fails with:

arch/x86/kernel/built-in.o: In function `flat_apic_id_registered':
genapic_flat_64.c:(.text+0x13e1d): undefined reference to `phys_cpu_present_map'
genapic_flat_64.c:(.text+0x13e24): undefined reference to `phys_cpu_present_map'
arch/x86/kernel/built-in.o: In function `APIC_init_uniprocessor':
: undefined reference to `phys_cpu_present_map'
[...]

with this config:

  http://redhat.com/~mingo/misc/config-Tue_Apr_22_15_40_10_CEST_2008.bad

	Ingo
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