From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758317Ab3K0UXB (ORCPT ); Wed, 27 Nov 2013 15:23:01 -0500 Received: from youngberry.canonical.com ([91.189.89.112]:44498 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932120Ab3K0UWz (ORCPT ); Wed, 27 Nov 2013 15:22:55 -0500 Message-ID: <52965493.8060208@canonical.com> Date: Wed, 27 Nov 2013 15:22:43 -0500 From: Joseph Salisbury User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.0 MIME-Version: 1.0 To: yinghai@kernel.org CC: Jesse Barnes , bhelgaas@google.com, linux-pci@vger.kernel.org, LKML , Tim Gardner Subject: [REGRESSION][v3.4-rc1] PCI: add a PCI resource reallocation config option Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Yinghai, A kernel bug was opened against Ubuntu [0]. After a kernel bisect, it was found that the following commit introduced the bug: commit b07f2ebc109b607789f648dedcff4b125f9afec6 Author: Yinghai Lu Date: Thu Feb 23 19:23:32 2012 -0800 PCI: add a PCI resource reallocation config option The regression was introduced as of v3.4-rc1 and also exists in current mainline. The bug seems platform specific since we have not had allot of other reports. The bug is preventing ixgbe to probe Intel x520 NIC's. It would be easy enough to disable the PCI_REALLOC_ENABLE_AUTO config option, but I wanted to get your feedback since you are the author. It looks like the bug reporter may also be able to work around the problem with the pci=realloc=. Thanks, Joe [0] pad.lv/1245938