Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1422674AbWJXVve (ORCPT ); Tue, 24 Oct 2006 17:51:34 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161253AbWJXVvd (ORCPT ); Tue, 24 Oct 2006 17:51:33 -0400 Received: from sj-iport-6.cisco.com ([171.71.176.117]:29056 "EHLO sj-iport-6.cisco.com") by vger.kernel.org with ESMTP id S1161226AbWJXVvc (ORCPT ); Tue, 24 Oct 2006 17:51:32 -0400 To: Matthew Wilcox Cc: Jeff Garzik , linux-pci@atrey.karlin.mff.cuni.cz, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, openib-general@openib.org, John Partridge Subject: Re: Ordering between PCI config space writes and MMIO reads? X-Message-Flag: Warning: May contain useful information References: <20061024192210.GE2043@havoc.gtf.org> <20061024214724.GS25210@parisc-linux.org> From: Roland Dreier Date: Tue, 24 Oct 2006 14:51:30 -0700 In-Reply-To: <20061024214724.GS25210@parisc-linux.org> (Matthew Wilcox's message of "Tue, 24 Oct 2006 15:47:24 -0600") Message-ID: User-Agent: Gnus/5.1007 (Gnus v5.10.7) XEmacs/21.4.18 (linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-OriginalArrivalTime: 24 Oct 2006 21:51:31.0168 (UTC) FILETIME=[90C69600:01C6F7B6] Authentication-Results: sj-dkim-2.cisco.com; header.From=rdreier@cisco.com; dkim=pass ( sig from cisco.com verified; ); Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 538 Lines: 15 > I think the right way to fix this is to ensure mmio write ordering in > the pci_write_config_*() implementations. Like this. I'm happy to fix this in the PCI core and not force drivers to worry about this. John, can you confirm that this patch fixes the issue for you? Thanks, Roland - 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/