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Date: Tue, 16 Oct 2012 19:03:11 +0200
From: Borislav Petkov <bp@alien8.de>
To: Fenghua Yu <fenghua.yu@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
        H Peter Anvin <hpa@zytor.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
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        "Srivatssa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>,
        Randy Dunlap <rdunlap@xenotime.net>,
        Chen Gong <gong.chen@linux.intel.com>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        linux-pm <linux-pm@vger.kernel.org>, x86 <x86@kernel.org>
Subject: Re: [PATCH v9 03/12] x86, topology: Don't offline CPU0 if any PIC
 irq can not be migrated out of it
Message-ID: <20121016170310.GC12694@x1.osrc.amd.com>
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	Asit K Mallick <asit.k.mallick@intel.com>,
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	Suresh B Siddha <suresh.b.siddha@intel.com>,
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	"Srivatssa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>,
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References: <1350058189-6769-1-git-send-email-fenghua.yu@intel.com>
 <1350058189-6769-4-git-send-email-fenghua.yu@intel.com>
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On Fri, Oct 12, 2012 at 09:09:40AM -0700, Fenghua Yu wrote:
> From: Fenghua Yu <fenghua.yu@intel.com>
> 
> If CONFIG_BOOTPARAM_HOTPLUG_CPU is turned on, CPU0 hotplug feature is enabled
> by default.
> 
> If CONFIG_BOOTPARAM_HOTPLUG_CPU is not turned on, CPU0 hotplug feature is not
> enabled by default. The kernel parameter cpu0_hotplug can enable CPU0 hotplug
> feature at boot.
> 
> Currently the feature is supported on Intel platforms only.
> 
> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
> ---
>  arch/x86/kernel/topology.c |   50 +++++++++++++++++++++++++++++++++++++------

It is just me or is this whole change better suited for

arch/x86/kernel/cpu/topology.c

where cpu-specific stuff lives anyway?

Thanks.

-- 
Regards/Gruss,
Boris.