Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753113Ab2KLTrP (ORCPT ); Mon, 12 Nov 2012 14:47:15 -0500 Received: from mx1.redhat.com ([209.132.183.28]:51117 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751576Ab2KLTrN (ORCPT ); Mon, 12 Nov 2012 14:47:13 -0500 Message-ID: <50A15233.10007@redhat.com> Date: Mon, 12 Nov 2012 14:46:59 -0500 From: Don Dutile User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.5) Gecko/20120601 Thunderbird/10.0.5 MIME-Version: 1.0 To: Bjorn Helgaas CC: Jason Gao , "Rose, Gregory V" , "Kirsher, Jeffrey T" , linux-kernel , netdev , kvm , "e1000-devel@lists.sourceforge.net" , linux-pci@vger.kernel.org, Yinghai Lu Subject: Re: SR-IOV problem with Intel 82599EB (not enough MMIO resources for SR-IOV) References: <201211081915083774239@gmail.com> <509B962C.6070002@gmail.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1864 Lines: 38 On 11/09/2012 10:26 AM, Bjorn Helgaas wrote: > [+ linux-pci, Yinghai] > > On Thu, Nov 8, 2012 at 8:59 PM, Jason Gao wrote: >>> The BIOS in your machine doesn't support SR-IOV. You'll need to ask the manufacturer for a BIOS upgrade, if in fact one is available. Sometimes they're not. >> >> very thanks Greg,my server Dell R710 with latest BIOS version and >> option for SR-IOV(SR-IOV Global Enable->Enabled) opened,I'm confused >> that Does R710 provide full support for SR-IOV, kernel or ixgbe >> driver's bug? but I'm not sure where the problem lies,anyone has any >> experience about this? . > > Linux normally uses the resource assignments done by the BIOS, but it > is possible for the kernel to reassign those. We don't have good > automatic support for that yet, but on a recent upstream kernel, you > can try "pci=realloc". I doubt this option is in CentOS 6.3, though. > Try moving the device into a different slot. You may be trying it in a non-ARI slot in the 710; that is a problem in RHEL6 (needing to realloc bus &/or mem-space). A non-ARI slot will want to use one bus number per VF.... which will be problematic. I know I've seen ixgbe's (& their vfs's) working on a dell 710; but they may also be one of those systems that has a slot off the ich10 with no ARI support. > If an upstream kernel with "pci=realloc" still doesn't work, please > post the entire dmesg log. > -- > To unsubscribe from this list: send the line "unsubscribe linux-pci" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- 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/