linux-kernel - Re: [PATCH v3] x86: under bios control, restore AP's APIC

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Date:	Mon, 9 Nov 2009 08:08:44 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Yong Wang <yong.y.wang@...ux.intel.com>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Suresh Siddha <suresh.b.siddha@...el.com>,
	Arjan van de Ven <arjan@...radead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3] x86: under bios control, restore AP's APIC_LVTTHMR to
 the BSP value


* Yong Wang <yong.y.wang@...ux.intel.com> wrote:

> Changes since v2:
> Incorporate Ingo's comments to get BSP's thermal init value in a
> 'boot-CPU-only' function.

> diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
> index e09f0e2..2323771 100644
> --- a/arch/x86/kernel/setup.c
> +++ b/arch/x86/kernel/setup.c
> @@ -1002,6 +1002,7 @@ void __init setup_arch(char **cmdline_p)
>  
>  	init_apic_mappings();
>  	ioapic_init_mappings();
> +	get_bsp_lvtthmr_init();
>  
>  	/* need to wait for io_apic is mapped */
>  	probe_nr_irqs_gsi();

Ok - it's almost good in this form - it would be nice to name the new 
function something more generic, like mcheck_intel_therm_init(), and 
call it from arch/x86/kernel/cpu/mcheck/mce.c's mcheck_init() function.

Thanks,

	Ingo
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