Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932299Ab0LRWBV (ORCPT ); Sat, 18 Dec 2010 17:01:21 -0500 Received: from webmail.exar.com ([204.154.183.83]:1990 "EHLO smtp1.exar.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932284Ab0LRWBM convert rfc822-to-8bit (ORCPT ); Sat, 18 Dec 2010 17:01:12 -0500 Date: Sat, 18 Dec 2010 16:01:09 -0600 From: Jon Mason To: Jesse Barnes CC: Bjorn Helgaas , "linux-kernel@vger.kernel.org" , "netdev@vger.kernel.org" , Ramkrishna Vepa Subject: Re: "x86: allocate space within a region top-down" causes bar0 access issue Message-ID: <20101218220109.GE7676@exar.com> References: <20101217194457.GA4470@exar.com> <20101217114721.04eafeca@jbarnes-desktop> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20101217114721.04eafeca@jbarnes-desktop> Thread-Topic: "x86: allocate space within a region top-down" causes bar0 access issue Accept-Language: en-US Content-Language: en-US User-Agent: Mutt/1.5.20 (2009-06-14) Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1644 Lines: 41 On Fri, Dec 17, 2010 at 11:47:21AM -0800, Jesse Barnes wrote: > On Fri, 17 Dec 2010 13:44:58 -0600 > Jon Mason wrote: > > > The following patch is causing problem with the vxge driver/adapter on > > HP x86-64 systems. Reads to bar0 to return 0xffffffffffffffff instead > > of their intended value. This prevents the vxge module from loading > > by failing sanity checks in the driver for certain values in bar0. We > > are not seeing any issues with this patch on non-HP systems in our > > lab. > > > > Can this patch be removed from 2.6.37 until a better solution can be > > found? > > Can you try my for-linus branch and see if the problem still exists > there? It's at > git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6.git. The for-linus branch does NOT have the issue The master branch does have the issue Thanks, Jon > > Thanks, > -- > Jesse Barnes, Intel Open Source Technology Center The information and any attached documents contained in this message may be confidential and/or legally privileged. The message is intended solely for the addressee(s). If you are not the intended recipient, you are hereby notified that any use, dissemination, or reproduction is strictly prohibited and may be unlawful. If you are not the intended recipient, please contact the sender immediately by return e-mail and destroy all copies of the original message. -- 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/