Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759625AbXEXC7z (ORCPT ); Wed, 23 May 2007 22:59:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757264AbXEXC7r (ORCPT ); Wed, 23 May 2007 22:59:47 -0400 Received: from outbound-mail-78.bluehost.com ([69.89.22.27]:52730 "HELO outbound-mail-78.bluehost.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1756667AbXEXC7q (ORCPT ); Wed, 23 May 2007 22:59:46 -0400 From: Jesse Barnes To: Linus Torvalds Subject: Re: [RFC PATCH] PCI MMCONFIG: add validation against ACPI motherboard resources Date: Wed, 23 May 2007 19:59:26 -0700 User-Agent: KMail/1.9.6 Cc: Olivier Galibert , Robert Hancock , linux-kernel , Andi Kleen , Chuck Ebbert , Len Brown References: <4635510D.4060103@shaw.ca> <200705231555.07683.jbarnes@virtuousgeek.org> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200705231959.26963.jbarnes@virtuousgeek.org> X-Identified-User: {642:box128.bluehost.com:virtuous:virtuousgeek.org} {sentby:smtp auth 76.102.120.196 authed with jbarnes@virtuousgeek.org} Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1404 Lines: 30 On Wednesday, May 23, 2007 5:21:13 Linus Torvalds wrote: > On Wed, 23 May 2007, Jesse Barnes wrote: > > After I sent my last message I realized the same thing... though I > > occasionally hear people talk about removing it (I seriously doubt that > > will ever happen). I don't even think there's a way to disable type 1 > > config access on Intel chipsets... > > Considering that the chipsets still have support for features that > *really* aren't used (and haven't been used in over a decade), I doubt the > conf1 thing is going away any time soon. > > Things like: A20 gate, 15-16MB holes, i387 FP exception on irq 13 are > totally pointless in this day and age. Things like the DMA controller are > getting there, along with PS/2 keyboard support. > > So there's a lot of things that are likely to be removed before conf1 > accesses would. Removing CONF1 accesses would break every single current > OS, they'll do that ten years from now at the earliest. So what do you think? You ok with enabling mmconfig if it's available as long as we use type 1 accesses for non-extended stuff? If so, I think the patches are pretty much ready... Thanks, Jesse - 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/