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 12:45:38 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 25 Jan 2001 12:45:28 -0500 Received: from harpo.it.uu.se ([130.238.12.34]:10956 "EHLO harpo.it.uu.se") by vger.kernel.org with ESMTP id ; Thu, 25 Jan 2001 12:45:19 -0500 Date: Thu, 25 Jan 2001 18:45:16 +0100 (MET) From: Mikael Pettersson Message-Id: <200101251745.SAA07063@harpo.it.uu.se> To: linux-kernel@vger.kernel.org Subject: x86 PAT errata Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org 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. /Mikael - 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/