From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762799AbXJOXtV (ORCPT ); Mon, 15 Oct 2007 19:49:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755591AbXJOXtH (ORCPT ); Mon, 15 Oct 2007 19:49:07 -0400 Received: from smtp-outbound-1.vmware.com ([65.113.40.141]:37061 "EHLO smtp-outbound-1.vmware.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755602AbXJOXtF (ORCPT ); Mon, 15 Oct 2007 19:49:05 -0400 Subject: Re: [stable] [PATCH 00/12] xen/paravirt_ops patches for 2.6.24 From: Zachary Amsden To: Andi Kleen Cc: Jeremy Fitzhardinge , xen-devel@lists.xensource.com, Greg KH , LKML , Stable Kernel , Chris Wright , virtualization@lists.osdl.org, Andrew Morton , Linus Torvalds , Keir Fraser In-Reply-To: <200710160003.13189.ak@suse.de> References: <20071015204840.074767068@goop.org> <20071015215406.GA1588@kroah.com> <4713E2D6.90801@goop.org> <200710160003.13189.ak@suse.de> Content-Type: text/plain Date: Mon, 15 Oct 2007 16:48:44 -0700 Message-Id: <1192492124.17375.62.camel@bodhitayantram.eng.vmware.com> Mime-Version: 1.0 X-Mailer: Evolution 2.10.2 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2007-10-16 at 00:03 +0200, Andi Kleen wrote: > > Subject: [PATCH 12/12] xfs: eagerly remove vmap mappings to avoid > > upsetting Xen > > This should be probably done unconditionally because it's a undefined > dangerous condition everywhere. Should be done unconditionally. One could remap the underlying physical space to include an MMIO region, and speculative reads from the cacheable virtual mapping of that region could move the robot arm, destroying the world. Zach