From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755277Ab2CHIj5 (ORCPT ); Thu, 8 Mar 2012 03:39:57 -0500 Received: from nat28.tlf.novell.com ([130.57.49.28]:16687 "EHLO nat28.tlf.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751591Ab2CHIjy convert rfc822-to-8bit (ORCPT ); Thu, 8 Mar 2012 03:39:54 -0500 Message-Id: <4F587E9702000078000770BA@nat28.tlf.novell.com> X-Mailer: Novell GroupWise Internet Agent 12.0.0 Date: Thu, 08 Mar 2012 08:40:39 +0000 From: "Jan Beulich" To: "Bjorn Helgaas" , "Yinghai Lu" Cc: "Bjorn Helgaas" , "x86" , "Mauro Carvalho Chehab" , , , "Jesse Barnes" Subject: Re: [PATCH 23/23] x86, PCI: add pcibios_root_rescan References: <1331018040-30725-1-git-send-email-yinghai@kernel.org> <1331018040-30725-24-git-send-email-yinghai@kernel.org> In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8BIT Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >>> On 08.03.12 at 05:27, Bjorn Helgaas wrote: > Personally, I think we should put a stake in the ground and say "For > machines newer than 2013, Linux will not blindly probe for PCI > devices. If you want EDAC functionality, make sure your BIOS exposes > the appropriate PCI host bridges." If OEMs do care about EDAC, it's a > simple BIOS change to do this. > > I certainly don't think we need to add hotplug or bus rescan > functionality to cover this case. This sort of stuff makes > maintenance MUCH harder because we have to worry about all these > corner cases. I'm certainly fine with such a position, as long as this is made visible as a policy and the other hack in the i7core edac driver to find non- exposed devices gets removed as well. It was really the existing hack (which worked only on a certain subset of systems) that made me try find a more generic solution. Jan