linux-kernel - Re: [PATCH] x86, apic: clean up handling of boot_cpu_physical

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Date:	Wed, 5 Feb 2014 11:40:25 -0500
From:	Vivek Goyal <vgoyal@...hat.com>
To:	HATAYAMA Daisuke <d.hatayama@...fujitsu.com>
Cc:	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"x86@...nel.org" <x86@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86, apic: clean up handling of boot_cpu_physical_apicid
 in boot process

On Thu, Jan 16, 2014 at 06:40:00PM +0900, HATAYAMA Daisuke wrote:

[..]
> diff --git a/arch/x86/include/asm/mpspec.h b/arch/x86/include/asm/mpspec.h
> index 3142a94..724853f 100644
> --- a/arch/x86/include/asm/mpspec.h
> +++ b/arch/x86/include/asm/mpspec.h
> @@ -47,6 +47,7 @@ extern int mp_bus_id_to_type[MAX_MP_BUSSES];
>  extern DECLARE_BITMAP(mp_bus_not_pci, MAX_MP_BUSSES);
>  
>  extern unsigned int boot_cpu_physical_apicid;
> +extern unsigned int bios_bsp_physical_apicid;

I think put some comments here to explain clearly what is
boot_cpu_physical_apicid and what is bios_bsp_physical_apicid and what's
the difference. So that anybody making use of these variables or changing
code understands the difference better.

Thanks
Vivek
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