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Date: Fri, 20 Dec 2013 16:08:53 -0800
From: "H. Peter Anvin" <hpa@zytor.com>
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To: "Luck, Tony" <tony.luck@intel.com>, Andi Kleen <ak@linux.intel.com>,
        Prarit Bhargava <prarit@redhat.com>
CC: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>,
        "x86@kernel.org" <x86@kernel.org>,
        Michel Lespinasse <walken@google.com>,
        Seiji Aguchi <seiji.aguchi@hds.com>,
        "Zhang, Yang Z" <yang.z.zhang@intel.com>,
        Paul Gortmaker <paul.gortmaker@windriver.com>,
        "Morgan, Janet" <janet.morgan@intel.com>,
        "ruiv.wang@gmail.com" <ruiv.wang@gmail.com>,
        "gong.chen@linux.intel.com" <gong.chen@linux.intel.com>
Subject: Re: [PATCH] x86: Add check for number of available vectors before
 CPU down [v3]
References: <1387554609-9823-1-git-send-email-prarit@redhat.com> <20131220225624.GD22695@tassilo.jf.intel.com> <3908561D78D1C84285E8C5FCA982C28F31D8F0E9@ORSMSX106.amr.corp.intel.com>
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On 12/20/2013 03:06 PM, Luck, Tony wrote:
>> I haven't double checked, but I'm assuming the hot plug locks are held
>> while you are doing this.
> 
> I dug into that when looking at v2 - the whole thing is under "stop_machine()"
> so locking was not an issue.
> 
> Reviewed-by: Tony Luck <tony.luck@intel.com>
> 

Awesome, thank you!  I have queued this up for Linus already as a fix
for 3.13, as it seems important enough.

	-hpa