From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753923Ab1GNIBa (ORCPT ); Thu, 14 Jul 2011 04:01:30 -0400 Received: from oproxy9.bluehost.com ([69.89.24.6]:55908 "HELO oproxy9.bluehost.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752038Ab1GNIB2 (ORCPT ); Thu, 14 Jul 2011 04:01:28 -0400 X-Greylist: delayed 399 seconds by postgrey-1.27 at vger.kernel.org; Thu, 14 Jul 2011 04:01:28 EDT DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=virtuousgeek.org; h=Received:Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References:X-Mailer:Mime-Version:Content-Type:Content-Transfer-Encoding:X-Identified-User; b=LIrIGDLFxio2SdRPC0HVCduoCAn0nIrzQTb6x1q9QFHmL2nCHv1LkvP4NVcvOWg7jH4gewOjJ4g847cGfeRHa4OrpjG5o3D0hhiib/u5foufj/3MLFC35r8nrGt2uAhn; Date: Thu, 14 Jul 2011 15:35:33 +0800 From: Jesse Barnes To: Chris Wright Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Don Dutile Subject: Re: [PATCH resend] pci: ARI is a PCIe v2 feature Message-ID: <20110714153533.7f310cdf@jbarnes-e6510> In-Reply-To: <20110713171433.GU15844@sequoia.sous-sol.org> References: <20110713171433.GU15844@sequoia.sous-sol.org> X-Mailer: Claws Mail 3.7.6 (GTK+ 2.22.0; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Identified-User: {10642:box514.bluehost.com:virtuous:virtuousgeek.org} {sentby:smtp auth 192.102.205.10 authed with jbarnes@virtuousgeek.org} Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 13 Jul 2011 10:14:33 -0700 Chris Wright wrote: > The function pci_enable_ari() may mistakenly set the downstream port > of a v1 PCIe switch in ARI Forwarding mode. This is a PCIe v2 > feature, and with an SR-IOV device on that switch port believing the > switch above is ARI capable it may attempt to use functions 8-255, > translating into invalid (non-zero) device numbers for that bus. > This has been seen to cause Completion Timeouts and general > misbehaviour including hangs and panics. Thanks Chris, your earlier one is still sitting in my queue, but I wasn't going to send it for 3.0 as it didn't seem that critical. Do you think it is? If so you can send it directly to Linus with my ack as I don't have anything else queued, or just wait until the merge window when it will be put into the stable tree as well. Thanks, Jesse