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 15:30:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 24 Jan 2001 15:30:14 -0500 Received: from jump-isi.interactivesi.com ([207.8.4.2]:766 "HELO dinero.interactivesi.com") by vger.kernel.org with SMTP id ; Wed, 24 Jan 2001 15:30:11 -0500 Date: Wed, 24 Jan 2001 14:30:10 -0600 From: Timur Tabi To: Linux Kernel Mailing list Cc: Linux MM mailing list In-Reply-To: <3A6F22D7.3000709@valinux.com> In-Reply-To: <20010124174824Z129401-18594+948@vger.kernel.org> Subject: Re: Page Attribute Table (PAT) support? X-Mailer: The Polarbar Mailer; version=1.19a; build=73 Message-Id: <20010124203012Z129444-18594+1042@vger.kernel.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org ** Reply to message from Jeff Hartmann on Wed, 24 Jan 2001 11:45:43 -0700 > I'm actually writing support for the PAT as we speak. I already have > working code for PAT setup. Just having a parameter for ioremap is not > enough, unfortunately. According to the Intel Architecture Software > Developer's Manual we have to remove all mappings of the page that are > cached. For our specific purposes, that's not important. We already flush the cache before we create uncached regions (via ioremap_nocache). I understand that as a general Linux feature, you can't ignore cache incoherency, but I don't think it's a hard requirement. -- 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/