Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751978AbdF3Obq (ORCPT ); Fri, 30 Jun 2017 10:31:46 -0400 Received: from Galois.linutronix.de ([146.0.238.70]:35463 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751560AbdF3Obo (ORCPT ); Fri, 30 Jun 2017 10:31:44 -0400 Date: Fri, 30 Jun 2017 16:30:54 +0200 (CEST) From: Thomas Gleixner To: Andi Kleen cc: Yinghai Lu , Stephane Eranian , "H. Peter Anvin" , Ingo Molnar , Peter Zijlstra , Borislav Petkov , Linux Kernel Mailing List , Bjorn Helgaas , Linus Torvalds , Matthew Wilcox , Ivan Kokshaysky , "linux-tip-commits@vger.kernel.org" Subject: Re: [tip:x86/platform] x86/PCI/mmcfg: Switch to ECAM config mode if possible In-Reply-To: <20170630031849.GP23705@tassilo.jf.intel.com> Message-ID: References: <20170316215057.452220163@linutronix.de> <20170630031849.GP23705@tassilo.jf.intel.com> User-Agent: Alpine 2.20 (DEB 67 2015-01-07) 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: 549 Lines: 18 On Thu, 29 Jun 2017, Andi Kleen wrote: > > Would this patch actually void the commit: > > Yes it does. My origina; patches were opt-in for this reason, but Thomas doesn't > believe in historical or other people's experience. I did not realize that particular wreckage. > But MCFG problems were a long time ago and noone uses these systems anymore, > so perhaps he is right. The obvious solution to this is to force type 1 for older machines, i.e. <= K8. Some day we should stop supporting 15+ years old crap just because we can. Thanks, tglx