Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755551AbXLRV5l (ORCPT ); Tue, 18 Dec 2007 16:57:41 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753457AbXLRV5c (ORCPT ); Tue, 18 Dec 2007 16:57:32 -0500 Received: from smtp2.linux-foundation.org ([207.189.120.14]:54576 "EHLO smtp2.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752407AbXLRV53 (ORCPT ); Tue, 18 Dec 2007 16:57:29 -0500 Date: Tue, 18 Dec 2007 13:56:34 -0800 (PST) From: Linus Torvalds To: Chuck Ebbert cc: Richard Henderson , linux-kernel , Ivan Kokshaysky , Daniel Ritz , Greg KH , Keith Packard , Bjorn Helgaas Subject: Re: PCI resource problems caused by improper address rounding In-Reply-To: <47683FA1.6070103@redhat.com> Message-ID: References: <47671377.6000405@redhat.com> <47680489.6040809@redhat.com> <20071218202234.GA24525@twiddle.net> <47683FA1.6070103@redhat.com> 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: 1256 Lines: 32 On Tue, 18 Dec 2007, Chuck Ebbert wrote: > On 12/18/2007 04:09 PM, Linus Torvalds wrote: > > > > I wonder what the heck is the point of that pnp entry. Just for fun, can > > you try to just disable CONFIG_PNP, and see if it all works then? > > pnpacpi=off should work. > > PnP is also trying (and failing) to reserve all physical memory. Yeah, that really is a pretty confused-looking pnp table thing. But I have absolutely zero idea how PnP is even supposed to work - the whole thing is just a total hack for Windows, afaik. The sad part is that *normally* the right thing to do about almost any BIOS information is what we do right now: just avoid that magic address range like the plague, because we have no clue what the heck the BIOS is up to. But it looks like in this particular case, some of the problems may arise exactly *because* we avoid that range. It would be good to know what Windows does. If ACPI is found, does it perhaps just ignore all the PnP entries these days? Linus -- 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/