From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755879AbYDJAgW (ORCPT ); Wed, 9 Apr 2008 20:36:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754052AbYDJAgO (ORCPT ); Wed, 9 Apr 2008 20:36:14 -0400 Received: from pasmtpa.tele.dk ([80.160.77.114]:60503 "EHLO pasmtpA.tele.dk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752268AbYDJAgN (ORCPT ); Wed, 9 Apr 2008 20:36:13 -0400 Subject: Re: Does Linux have plan to support memory hole remapping? From: Kasper Sandberg To: Ingo Molnar Cc: Matti Aarnio , Zhao Forrest , Andi Kleen , discuss@x86-64.org, linux-kernel@vger.kernel.org, yhlu.kernel@gmail.com, ak@suse.de In-Reply-To: <20080409085440.GB32466@elte.hu> References: <87iqyro3rc.fsf@basil.nowhere.org> <20080409083700.GU3700@mea-ext.zmailer.org> <20080409085440.GB32466@elte.hu> Content-Type: text/plain Date: Thu, 10 Apr 2008 02:34:47 +0200 Message-Id: <1207787687.30698.97.camel@localhost> Mime-Version: 1.0 X-Mailer: Evolution 2.4.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2008-04-09 at 10:54 +0200, Ingo Molnar wrote: [..] > > having said that - but we'll still consider sane looking patches that > allow the remapping of otherwise inactive RAM. [ We might not even have > to touch the system chipset beyond what Linux already knows about it: in A somewhat related question is.. How come linux does not(as i understand it) support talking to the chipsets to do these things? wouldnt this also give other benefits, such as being able to more precisely control interrupts and stuff? > theory someone might want to try a hack to GART remap such RAM areas and > use a sparse mem map entry to map it to Linux - if the identity of that > RAM is crystal-clear and there's enough GART space available. But even > then it's probably still at best a dangerous and fragile hack. ] > > Ingo > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/