Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265210AbUBAElG (ORCPT ); Sat, 31 Jan 2004 23:41:06 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265212AbUBAElG (ORCPT ); Sat, 31 Jan 2004 23:41:06 -0500 Received: from colo.lackof.org ([198.49.126.79]:54764 "EHLO colo.lackof.org") by vger.kernel.org with ESMTP id S265210AbUBAElD (ORCPT ); Sat, 31 Jan 2004 23:41:03 -0500 Date: Sat, 31 Jan 2004 21:41:01 -0700 From: Grant Grundler To: "Eric W. Biederman" Cc: Matthew Wilcox , Linus Torvalds , "Durairaj, Sundarapandian" , Kernel Mailing List , linux-pci@atrey.karlin.mff.cuni.cz, Alan Cox , Greg KH , Andi Kleen , Andrew Morton , mj@ucw.cz, "Kondratiev, Vladimir" , "Seshadri, Harinarayanan" , "Nakajima, Jun" Subject: Re: [patch] PCI Express Enhanced Config Patch - 2.6.0-test11 Message-ID: <20040201044101.GA3730@colo.lackof.org> References: <6B09584CC3D2124DB45C3B592414FA830112C34F@bgsmsx402.gar.corp.intel.com> <20040129150925.GC18725@parcelfarce.linux.theplanet.co.uk> <20040129155911.GD18725@parcelfarce.linux.theplanet.co.uk> <20040129164230.GE18725@parcelfarce.linux.theplanet.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.3.28i X-Home-Page: http://www.parisc-linux.org/ Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 891 Lines: 25 On Sat, Jan 31, 2004 at 02:57:29PM -0700, Eric W. Biederman wrote: > Is it really safe to treat the base address as a u32? Sorry...I missed this in the code...but the following confuses me: > I know > if I was doing the BIOS and that address was tied to a 32bit BAR I > would be extremely tempted to put those 256M of address space above > 4G. uhmm, how can one put a 32-bit BAR above 4G? You meant 64-bit BAR? > Point being I don't think it is safe to assume the BIOS always puts > the extended PCI configuration space below 4G. where MMCONFIG lives is orthogonal to where BARs point to. I'm pretty sure I missed the point...sorry. grant - 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/