Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756164AbXHUViZ (ORCPT ); Tue, 21 Aug 2007 17:38:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753414AbXHUViK (ORCPT ); Tue, 21 Aug 2007 17:38:10 -0400 Received: from netops-testserver-4-out.sgi.com ([192.48.171.29]:53934 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753352AbXHUViJ (ORCPT ); Tue, 21 Aug 2007 17:38:09 -0400 From: akepner@sgi.com Date: Tue, 21 Aug 2007 14:37:07 -0700 To: Matthew Wilcox Cc: Jes Sorensen , linux-kernel , rdreier@cisco.com, linux-ia64 Subject: Re: [PATCH 2/3] dma: override "dma_flags_set_dmaflush" for sn-ia64 Message-ID: <20070821213707.GH5592@sgi.com> References: <20070818002746.GU1813@sgi.com> <46C94FD5.6000006@sgi.com> <20070821193522.GD5592@sgi.com> <20070821201631.GF9163@parisc-linux.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070821201631.GF9163@parisc-linux.org> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 703 Lines: 19 On Tue, Aug 21, 2007 at 02:16:32PM -0600, Matthew Wilcox wrote: > > So, let me try to understand ... your hardware allows writes from the > device to pass other writes from the device? Doesn't that violate the > PCI spec? I'm thinking about this (page 43 of PCI 2.3): > .... I should have stated this more carefully, but it's not a PCI reordering that's being addressed here, it's a reordering that can occur within the NUMA-interconnect. -- Arthur - 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/