From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 25 Jan 2001 17:29:12 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 25 Jan 2001 17:29:02 -0500 Received: from neon-gw.transmeta.com ([209.10.217.66]:59148 "EHLO neon-gw.transmeta.com") by vger.kernel.org with ESMTP id ; Thu, 25 Jan 2001 17:28:51 -0500 To: linux-kernel@vger.kernel.org From: "H. Peter Anvin" Subject: Re: x86 PAT errata Date: 25 Jan 2001 14:28:32 -0800 Organization: Transmeta Corporation, Santa Clara CA Message-ID: <94q9ag$9bs$1@cesium.transmeta.com> In-Reply-To: <200101251745.SAA07063@harpo.it.uu.se> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Disclaimer: Not speaking for Transmeta in any way, shape, or form. Copyright: Copyright 2001 H. Peter Anvin - All Rights Reserved Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Followup to: <200101251745.SAA07063@harpo.it.uu.se> By author: Mikael Pettersson In newsgroup: linux.dev.kernel > > Before people get too exited about the x86 Page Attribute Table ... > Does Linux use mode B (CR4.PSE=1) or mode C (CR4.PAE=1) paging? > If so, known P6 errata must be taken into account. > In particular, Pentium III errata E27 and Pentium II errata A56 > imply that only the low four PAT entries are working for 4KB > pages, if CR4.PSE or CR4.PAE is enabled. > All of the above. Sounds like PAT should be declared broken on these chips. -hpa -- at work, in private! "Unix gives you enough rope to shoot yourself in the foot." http://www.zytor.com/~hpa/puzzle.txt - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/