This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


[Xen-devel] Re: [RFC] x86: cacheability page attributes

To: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Subject: [Xen-devel] Re: [RFC] x86: cacheability page attributes
From: Andi Kleen <andi@xxxxxxxxxxxxxx>
Date: 04 Apr 2007 12:50:21 +0200
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, Jan Beulich <jbeulich@xxxxxxxxxx>
Delivery-date: Wed, 04 Apr 2007 03:47:40 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
In-reply-to: <C2390F79.55D9%Keir.Fraser@xxxxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <46127A18.76E4.0078.0@xxxxxxxxxx> <C2390F79.55D9%Keir.Fraser@xxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3
Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> writes:

> On 3/4/07 15:00, "Jan Beulich" <jbeulich@xxxxxxxxxx> wrote:
> > Attached draft patch is supposed to help dealing with tracking cacheability
> > attributes on x86, specifically to prevent page aliases using different
> > cacheability attributes.
> How important is this to get right?

Very. We had very hard to track down problems in the mainline kernel
from it. Typically only with 3d drivers though.


Xen-devel mailing list

<Prev in Thread] Current Thread [Next in Thread>