From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1752880Ab1GZSfh (ORCPT <rfc822;w@1wt.eu>);
	Tue, 26 Jul 2011 14:35:37 -0400
Received: from mx3.mail.elte.hu ([157.181.1.138]:37134 "EHLO mx3.mail.elte.hu"
	rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
	id S1751661Ab1GZSfb (ORCPT <rfc822;linux-kernel@vger.kernel.org>);
	Tue, 26 Jul 2011 14:35:31 -0400
Date: Tue, 26 Jul 2011 20:34:30 +0200
From: Ingo Molnar <mingo@elte.hu>
To: Borislav Petkov <bp@amd64.org>
Cc: Ray Lee <ray-lk@madrabbit.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        "H. Peter Anvin" <hpa@zytor.com>, Thomas Gleixner <tglx@linutronix.de>,
        LKML <linux-kernel@vger.kernel.org>,
        "Przywara, Andre" <Andre.Przywara@amd.com>,
        "Pohlack, Martin" <Martin.Pohlack@amd.com>
Subject: Re: [PATCH] x86, AMD: Correct F15h IC aliasing issue
Message-ID: <20110726183430.GA501@elte.hu>
References: <CA+55aFze=w7tjmyGa2w=D8b6roDuL5O0gmDKkSzLKBLLYZ_a+A@mail.gmail.com>
 <20110724182323.GA13247@aftab>
 <20110724183045.GB29660@elte.hu>
 <20110724190752.GA13647@aftab>
 <20110724204450.GB18546@elte.hu>
 <20110725200014.GA23986@aftab>
 <20110725200645.GC8302@elte.hu>
 <20110725215328.GA25960@aftab>
 <CADU53JV-aKbRU-iixbqcv_kAci7L6z43GYmP6uw8hZdY4PrBbQ@mail.gmail.com>
 <20110726172801.GC32536@aftab>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20110726172801.GC32536@aftab>
User-Agent: Mutt/1.5.21 (2010-09-15)
X-ELTE-SpamScore: -2.0
X-ELTE-SpamLevel: 
X-ELTE-SpamCheck: no
X-ELTE-SpamVersion: ELTE 2.0 
X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.3.1
	-2.0 BAYES_00               BODY: Bayes spam probability is 0 to 1%
	[score: 0.0000]
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org


* Borislav Petkov <bp@amd64.org> wrote:

> Ok, I went and installed a Debian wheezy with gnome and started 
> almost everything I could find in the startup menu. Kernel is 3.0 
> with Linus' simpler fix.
> 
> The attached file shows all libraries which would create aliases 
> (i.e. 2 or more unique values for bits [14:12] along with the 
> respective count) in the total of:
> 
> Total r-xp mappings: 831, aliasing: 240 (0.289%)

28.9%, right?

> For example, libc gets mapped into all possible slots for [14:12]
> 
> Library                                 [14:12] count
> =======                                 ======= =====
> /lib/libc-2.11.2.so
>                                         0       12
>                                         1       12
>                                         2       11
>                                         3       12
>                                         4       13
>                                         5       16
>                                         6       13
>                                         7       9
> 
> 
> and so on.

Was this done with a stock kernel, or with the simple patch applied?

Thanks,

	Ingo