Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755918Ab0A1QKo (ORCPT ); Thu, 28 Jan 2010 11:10:44 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755463Ab0A1QKn (ORCPT ); Thu, 28 Jan 2010 11:10:43 -0500 Received: from g5t0006.atlanta.hp.com ([15.192.0.43]:41864 "EHLO g5t0006.atlanta.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754215Ab0A1QKm (ORCPT ); Thu, 28 Jan 2010 11:10:42 -0500 From: Bjorn Helgaas To: Yinghai Lu Subject: Re: [Bug #15124] PCI host bridge windows ignored (works =?iso-8859-1?q?with=09pci=3Duse=5Fcrs?=) Date: Thu, 28 Jan 2010 09:09:44 -0700 User-Agent: KMail/1.9.10 Cc: Linus Torvalds , Jesse Barnes , Jeff Garrett , "Rafael J. Wysocki" , Linux Kernel Mailing List , Kernel Testers List , Linux PCI , Myron Stowe , Matthew Garrett , Ingo Molnar References: <1264652762.24020.5.camel@dc7800.home> <4B61266F.1060600@kernel.org> In-Reply-To: <4B61266F.1060600@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <201001280909.46043.bjorn.helgaas@hp.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1159 Lines: 28 On Wednesday 27 January 2010 10:53:51 pm Yinghai Lu wrote: > On 01/27/2010 08:26 PM, Bjorn Helgaas wrote: > > On Wed, 2010-01-27 at 15:34 -0800, Yinghai Lu wrote: > >> 2. how about when apci is disabled? > > > > When ACPI is disabled, I think we just have to accept that we lose some > > functionality. I don't see the need for alternate ways to accomplish > > everything that ACPI does. It's becoming less and less useful to > > disable ACPI; I think it's only interesting as a debugging tool, and > > even then it's a sledgehammer. > > some systems when acpi is enabled could have interrupt storm. > and have to disable acpi. We should fix that problem rather than just covering it up by disabling ACPI. Can you provide any details? I think it's crazy to add code to work around Problem B that only occurs because we disabled ACPI to work around Problem A. We should just fix Problem A instead. 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/