From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 24 Jan 2001 12:48:38 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 24 Jan 2001 12:48:28 -0500 Received: from jump-isi.interactivesi.com ([207.8.4.2]:2557 "HELO dinero.interactivesi.com") by vger.kernel.org with SMTP id ; Wed, 24 Jan 2001 12:48:21 -0500 Date: Wed, 24 Jan 2001 11:48:19 -0600 From: Timur Tabi To: Linux Kernel Mailing list , Linux MM mailing list Subject: Page Attribute Table (PAT) support? X-Mailer: The Polarbar Mailer; version=1.19a; build=73 Message-Id: <20010124174824Z129401-18594+948@vger.kernel.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org The Page Attribute Table (PAT) is an extension to the x86 page table format that lets you enable Write Combining on a per-page basis. Details can be found in chapter 9.13 of the Intel Architecture Software Developer's Manual, Volume 3 (System Programming). I noticed that 2.4 doesn't support the Page Attribute Table, despite the fact that it has a X86_FEATURE_PAT macro in processor.h. Are there any plans to add this support? Ideally, I'd like it to be as a parameter for ioremap. -- Timur Tabi - ttabi@interactivesi.com Interactive Silicon - http://www.interactivesi.com When replying to a mailing-list message, please direct the reply to the mailing list only. Don't send another copy to me. - 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/