Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755308Ab0FIXbG (ORCPT ); Wed, 9 Jun 2010 19:31:06 -0400 Received: from g1t0026.austin.hp.com ([15.216.28.33]:1301 "EHLO g1t0026.austin.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752000Ab0FIXbE (ORCPT ); Wed, 9 Jun 2010 19:31:04 -0400 From: Bjorn Helgaas To: Yinghai Lu Subject: Re: [PATCH -v2] pci: clear bridge resource size if BIOS assign bad one Date: Wed, 9 Jun 2010 17:30:31 -0600 User-Agent: KMail/1.13.2 (Linux/2.6.32-22-generic; KDE/4.4.2; x86_64; ; ) Cc: Jesse Barnes , Yannick Roehlly , "linux-pci@vger.kernel.org" , "linux-kernel@vger.kernel.org" References: <201006081649.00332.bjorn.helgaas@hp.com> <4C0ED401.6060800@oracle.com> In-Reply-To: <4C0ED401.6060800@oracle.com> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <201006091730.32724.bjorn.helgaas@hp.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1175 Lines: 27 On Tuesday, June 08, 2010 05:36:33 pm Yinghai Lu wrote: > On 06/08/2010 03:48 PM, Bjorn Helgaas wrote: > > On Tuesday, June 08, 2010 03:43:50 pm Jesse Barnes wrote: > > > > In this case, the aperture *size* from the BIOS is actually OK, but > > the beginning of the aperture overlaps system memory. With Yinghai's > > patch, we reduce the size and move the start. Windows was able to > > just move the start of the aperture and preserve the original > > 0x20000000 size (but I think it had to move something else out of > > the way). > > are you sure? that looks more aggressive. I don't have the machine and can't be 100% sure, but based on what Yannic reported here: https://bugzilla.kernel.org/show_bug.cgi?id=16009#c11, it looks like Windows moved that aperture. I haven't used it myself, but possibly a program like SIV (http://rh-software.com/) would give more detailed information about what Windows is doing. 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/