Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758604Ab0BRR1u (ORCPT ); Thu, 18 Feb 2010 12:27:50 -0500 Received: from one.firstfloor.org ([213.235.205.2]:39773 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757583Ab0BRR1t (ORCPT ); Thu, 18 Feb 2010 12:27:49 -0500 To: Jerome Glisse Cc: hpa@zytor.com, suresh.b.siddha@intel.com, venkatesh.pallipadi@intel.com, thellstrom@vmware.com, airlied@linux.ie, currojerez@riseup.net, linux-kernel@vger.kernel.org Subject: Re: Uncool feature for TTM introduced by x86, pat: Use page flags to track memtypes of RAM pages From: Andi Kleen References: <20100218153032.GA4506@localhost.localdomain> Date: Thu, 18 Feb 2010 18:27:39 +0100 In-Reply-To: <20100218153032.GA4506@localhost.localdomain> (Jerome Glisse's message of "Thu, 18 Feb 2010 16:30:32 +0100") Message-ID: <87aav65u9g.fsf@basil.nowhere.org> User-Agent: Gnus/5.1008 (Gnus v5.10.8) Emacs/22.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 576 Lines: 17 Jerome Glisse writes: > > Can we modify the interface to support again changing from uc to wc > or wc to uc ? (i can try to do a patch for that). At least on Intel CPUs that support self-snoop (all modern ones) that should really be very cheap. -Andi -- ak@linux.intel.com -- Speaking for myself only. -- 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/