Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754573Ab0LIQyk (ORCPT ); Thu, 9 Dec 2010 11:54:40 -0500 Received: from g1t0029.austin.hp.com ([15.216.28.36]:44898 "EHLO g1t0029.austin.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752917Ab0LIQyi (ORCPT ); Thu, 9 Dec 2010 11:54:38 -0500 From: Bjorn Helgaas To: Linus Torvalds Subject: Re: [PATCH] x86/PCI: never allocate PCI space from the last 1M below 4G Date: Thu, 9 Dec 2010 09:54:24 -0700 User-Agent: KMail/1.13.2 (Linux/2.6.32-25-generic; KDE/4.4.2; x86_64; ; ) Cc: "H. Peter Anvin" , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Jesse Barnes , Thomas Gleixner , Ingo Molnar , Matthew Garrett , Yinghai Lu References: <20101129183009.11256.33739.stgit@bob.kio> <201012030815.52203.bjorn.helgaas@hp.com> In-Reply-To: <201012030815.52203.bjorn.helgaas@hp.com> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <201012090954.24538.bjorn.helgaas@hp.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1256 Lines: 27 On Friday, December 03, 2010 08:15:48 am Bjorn Helgaas wrote: > On Thursday, December 02, 2010 06:19:20 pm Linus Torvalds wrote: > > On Mon, Nov 29, 2010 at 2:04 PM, Bjorn Helgaas wrote: > > > > > > I think we're talking about whether to reserve the top 1MB or top 2MB. > > > I freely admit I don't know the right answer. My point is merely that > > > since we're using a heuristic anyway, copying Windows is a pretty good > > > starting point. In my mind, doing something different requires a > > > stronger argument than "it might fix some machines where Windows is > > > broken." > > > > What's the status of this? The original patch is pretty nasty, and I > > think that hack to put things in the bios_align_resource() function is > > just disgusting. OK, let's drop this approach. My next proposal is the "PCI, PNP, resources: effectively reserve ACPI device resources" thread I posted yesterday (with mangled cover letter) here: https://lkml.org/lkml/2010/12/8/352 Bjorn -- 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/