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From: "Andrejczuk, Grzegorz" <grzegorz.andrejczuk@intel.com>
To: Thomas Gleixner <tglx@linutronix.de>, Pavel Machek <pavel@ucw.cz>
CC: "mingo@redhat.com" <mingo@redhat.com>, "hpa@zytor.com" <hpa@zytor.com>,
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        "Pan, Jacob jun" <jacob.jun.pan@intel.com>,
        "Luc, Piotr" <Piotr.Luc@intel.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: RE: [PATCH v6: 2/4] x86: Add enabling of the R3MWAIT during boot
Thread-Topic: [PATCH v6: 2/4] x86: Add enabling of the R3MWAIT during boot
Thread-Index: AQHSMFrIx4R57b7tPkCU8e7bNAqHeqC8TgSAgC8fpgCAAAF6gIAUZJLA
Date: Fri, 9 Dec 2016 12:49:33 +0000
Message-ID: <ED52C51D9B87F54892CE544909A13C6C1FF85E6E@IRSMSX101.ger.corp.intel.com>
References: <1477576923-3244-1-git-send-email-grzegorz.andrejczuk@intel.com>
 <1477576923-3244-3-git-send-email-grzegorz.andrejczuk@intel.com>
 <alpine.DEB.2.20.1610271625410.4817@nanos>
 <20161126131542.GB20568@xo-6d-61-c0.localdomain>
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> > On Thu 2016-10-27 16:38:13, Thomas Gleixner wrote:
> > > On Thu, 27 Oct 2016, Grzegorz Andrejczuk wrote:
> > > > +#ifdef CONFIG_X86_64
> > > > +static int phi_r3mwait_disabled __read_mostly;
> > > > +
> > > > +static int __init phir3mwait_disable(char *__unused) {
> > > > +	phi_r3mwait_disabled = 1;
> > > > +	pr_warn("x86/phir3mwait: Disabled ring 3 MWAIT for Xeon Phi");
> > > 
> > > Why would that be a warning? The sysadmin added the command line 
> > > switch, so why does he needs to be warned?
> > 
> > Its telling admin he did not make a typo on the command line. We often do that....
>
> Definitely not at the warning level.

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