From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755722Ab1KJFKG (ORCPT ); Thu, 10 Nov 2011 00:10:06 -0500 Received: from smtp-outbound-2.vmware.com ([65.115.85.73]:7771 "EHLO smtp-outbound-2.vmware.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752776Ab1KJFKB (ORCPT ); Thu, 10 Nov 2011 00:10:01 -0500 Date: Wed, 9 Nov 2011 21:10:00 -0800 (PST) From: Andrei Warkentin To: "H. Peter Anvin" Cc: LKML Message-ID: <2060353978.365421.1320901800753.JavaMail.root@zimbra-prod-mbox-2.vmware.com> In-Reply-To: <4EBB16BE.9050308@zytor.com> Subject: Re: /dev/mem "unbounded?" MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Originating-IP: [10.113.62.177] X-Mailer: Zimbra 7.1.1_GA_3225 (ZimbraWebClient - SAF3 (Linux)/7.1.1_GA_3225) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Peter, ----- Original Message ----- > From: "H. Peter Anvin" > To: "Andrei Warkentin" > Cc: "LKML" > Sent: Wednesday, November 9, 2011 7:11:42 PM > Subject: Re: /dev/mem "unbounded?" > > > Well, that mechanism is broken. The way it *should* work is that any > region which is system RAM should be denied access, and the rest is > accessible. The current behavior is a hack due to the behavior of > some > old versions of Xorg, but that has long been fixed. > Ah, ok, that seems very reasonable. Thank you for clarifying! A