From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754871Ab1GVPoQ (ORCPT ); Fri, 22 Jul 2011 11:44:16 -0400 Received: from oproxy9.bluehost.com ([69.89.24.6]:52165 "HELO oproxy9.bluehost.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1754862Ab1GVPoO (ORCPT ); Fri, 22 Jul 2011 11:44:14 -0400 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=CEp2NIZgCqhhx9Lzjzu7xEv6wwgnDrhMJCn78h3zGLO5alIUqyvCo7zIxbtqpInwDbGjPfjpNrWDXvty1D2GDpysIrPKMVsavZhwMKF2PhMdJLHleTWSJOfDImgGBj+O; Date: Fri, 22 Jul 2011 08:44:08 -0700 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: <20110722084408.7be2e9bc@jbarnes-desktop> 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 67.161.37.189 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. Applied, thanks. -- Jesse Barnes, Intel Open Source Technology Center