linux-kernel - Re: [PATCH 04/13] x86: Use HAVE_MEMBLOCK_NODE

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Date:	Wed, 13 Jul 2011 18:35:58 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Tejun Heo <tj@...nel.org>
CC:	mingo@...hat.com, tglx@...utronix.de, benh@...nel.crashing.org,
	yinghai@...nel.org, davem@...emloft.net,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	x86@...nel.org
Subject: Re: [PATCH 04/13] x86: Use HAVE_MEMBLOCK_NODE_MAP

On 07/12/2011 02:15 AM, Tejun Heo wrote:
> Convert x86 to HAVE_MEMBLOCK_NODE_MAP.  The only difference in memory
> handling is that allocations can't no longer cross node boundaries
> whether they're node affine or not, which shouldn't matter at all.
> 
> This conversion will enable further simplification of boot memory
> handling.
> 
> Signed-off-by: Tejun Heo <tj@...nel.org>
> Cc: Yinghai Lu <yinghai@...nel.org>
> Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Ingo Molnar <mingo@...hat.com>
> Cc: "H. Peter Anvin" <hpa@...or.com>

Hi Tejun,

This patch causes a build error on i386 allnoconfig:

/home/hpa/kernel/linux-2.6-tip.memblock/arch/x86/mm/init_32.c: In
function ‘initmem_init’:
/home/hpa/kernel/linux-2.6-tip.memblock/arch/x86/mm/init_32.c:653:2:
error: implicit declaration of function
‘memblock_x86_register_active_regions’
[-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors

	-hpa
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