From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Luis R. Rodriguez" <mcgrof@kernel.org>
Subject: Re: [PATCH 1/2] x86/mm/pat: Change pat_disable() to
	emulate PAT table
Date: Tue, 15 Mar 2016 22:31:53 +0100
Message-ID: <20160315213153.GB1990__9199.23095866597$1458077600$gmane$org@wotan.suse.de>
References: <1457671546-13486-1-git-send-email-toshi.kani@hpe.com>
 <1457671546-13486-2-git-send-email-toshi.kani@hpe.com>
 <20160311091229.GA4347@pd.tnic> <1457713660.6393.55.camel@hpe.com>
 <20160311155439.GF4312@pd.tnic> <1457724504.6393.151.camel@hpe.com>
 <20160312115544.GA23410@pd.tnic>
 <20160315002921.GG25147@wotan.suse.de>
 <1458011476.6393.327.camel@hpe.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <xen-devel-bounces@lists.xen.org>
Received: from mail6.bemta14.messagelabs.com ([193.109.254.103])
 by lists.xenproject.org with esmtp (Exim 4.84_2)
 (envelope-from <lurodriguez@suse.de>) id 1afwZI-0001sO-Ca
 for xen-devel@lists.xenproject.org; Tue, 15 Mar 2016 21:31:56 +0000
Content-Disposition: inline
In-Reply-To: <1458011476.6393.327.camel@hpe.com>
List-Unsubscribe: <http://lists.xen.org/cgi-bin/mailman/options/xen-devel>,
 <mailto:xen-devel-request@lists.xen.org?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xen.org>
List-Help: <mailto:xen-devel-request@lists.xen.org?subject=help>
List-Subscribe: <http://lists.xen.org/cgi-bin/mailman/listinfo/xen-devel>,
 <mailto:xen-devel-request@lists.xen.org?subject=subscribe>
Errors-To: xen-devel-bounces@lists.xen.org
Sender: "Xen-devel" <xen-devel-bounces@lists.xen.org>
To: Toshi Kani <toshi.kani@hpe.com>
Cc: "jgross@suse.com" <jgross@suse.com>, boris.ostrovsky@oracle.com, "x86@kernel.org" <x86@kernel.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, "paul.gortmaker@windriver.com" <paul.gortmaker@windriver.com>, "Luis R. Rodriguez" <mcgrof@kernel.org>, Borislav Petkov <bp@alien8.de>, "hpa@zytor.com" <hpa@zytor.com>, xen-devel@lists.xenproject.org, "tglx@linutronix.de" <tglx@linutronix.de>, "mingo@kernel.org" <mingo@kernel.org>
List-Id: xen-devel@lists.xenproject.org
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=