linux-kernel - Re: [PATCH 1/2] x86, acpi: add MAX_LOCAL

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Date:	Fri, 17 Dec 2010 12:56:41 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	Yinghai Lu <yinghai@...nel.org>
cc:	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Wu Fengguang <fengguang.wu@...el.com>,
	Peter Zijlstra <peterz@...radead.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Nikanth Karthikesan <knikanth@...e.de>,
	"Zheng, Shaohui" <shaohui.zheng@...el.com>,
	"linux-hotplug@...r.kernel.org" <linux-hotplug@...r.kernel.org>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Bjorn Helgaas <bjorn.helgaas@...com>,
	Venkatesh Pallipadi <venki@...gle.com>,
	Nikhil Rao <ncrao@...gle.com>,
	Takuya Yoshikawa <yoshikawa.takuya@....ntt.co.jp>,
	Tejun Heo <tj@...nel.org>
Subject: Re: [PATCH 1/2] x86, acpi: add MAX_LOCAL_APIC for 32bit

On Thu, 16 Dec 2010, Yinghai Lu wrote:

> Index: linux-2.6/arch/x86/include/asm/apicdef.h
> ===================================================================
> --- linux-2.6.orig/arch/x86/include/asm/apicdef.h
> +++ linux-2.6/arch/x86/include/asm/apicdef.h
> @@ -145,6 +145,7 @@
>  
>  #ifdef CONFIG_X86_32
>  # define MAX_IO_APICS 64
> +# define MAX_LOCAL_APIC 256
>  #else
>  # define MAX_IO_APICS 128
>  # define MAX_LOCAL_APIC 32768
> Index: linux-2.6/arch/x86/kernel/apic/apic.c
> ===================================================================
> --- linux-2.6.orig/arch/x86/kernel/apic/apic.c
> +++ linux-2.6/arch/x86/kernel/apic/apic.c
> @@ -1689,7 +1689,7 @@ void __init register_lapic_address(unsig
>   * This initializes the IO-APIC and APIC hardware if this is
>   * a UP kernel.
>   */
> -int apic_version[MAX_APICS];
> +int apic_version[MAX_LOCAL_APIC];
>  
>  int __init APIC_init_uniprocessor(void)
>  {
> Index: linux-2.6/arch/x86/include/asm/mpspec.h
> ===================================================================
> --- linux-2.6.orig/arch/x86/include/asm/mpspec.h
> +++ linux-2.6/arch/x86/include/asm/mpspec.h
> @@ -6,7 +6,7 @@
>  #include <asm/mpspec_def.h>
>  #include <asm/x86_init.h>
>  
> -extern int apic_version[MAX_APICS];
> +extern int apic_version[];
>  extern int pic_mode;
>  
>  #ifdef CONFIG_X86_32
> 

This looks like it duplicates and conflicts with Tejun's NUMA unification 
patchset, specifically http://marc.info/?l=linux-kernel&m=129087155712396
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