From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756701AbYAORgO (ORCPT ); Tue, 15 Jan 2008 12:36:14 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752869AbYAORf7 (ORCPT ); Tue, 15 Jan 2008 12:35:59 -0500 Received: from one.firstfloor.org ([213.235.205.2]:36493 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751423AbYAORf7 (ORCPT ); Tue, 15 Jan 2008 12:35:59 -0500 Date: Tue, 15 Jan 2008 18:39:02 +0100 From: Andi Kleen To: Jeremy Fitzhardinge Cc: Andi Kleen , Ingo Molnar , tglx@linutronix.de, linux-kernel@vger.kernel.org Subject: Re: Folding _PAGE_PWT into _PAGE_PCD (was Re: unify pagetable accessors patch causes double fault II) Message-ID: <20080115173902.GB2665@one.firstfloor.org> References: <20080114125638.GA9510@basil.nowhere.org> <20080114130620.GA14057@elte.hu> <20080114135811.GA16190@one.firstfloor.org> <478BDC43.6050105@goop.org> <20080114222349.GA23409@one.firstfloor.org> <478BE628.7090008@goop.org> <20080115135317.GA13493@elte.hu> <478CEA82.9010606@goop.org> <20080115172346.GB2377@one.firstfloor.org> <478CEE45.1040006@goop.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <478CEE45.1040006@goop.org> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > Good, but isn't the name _PAGE_CACHE misleading? Or does it mean It's all bits related to caching. > something else in the context of PAT? It could mean arbitary things with PAT -- PAT essentially allows to reprogram these bits freely to various different modi using a mapping table. In the default configuration any bit set should resort in a uncacheable mode though. -Andi