Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 11 Jun 2002 03:49:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 11 Jun 2002 03:47:43 -0400 Received: from pizda.ninka.net ([216.101.162.242]:64706 "EHLO pizda.ninka.net") by vger.kernel.org with ESMTP id ; Tue, 11 Jun 2002 03:47:26 -0400 Date: Tue, 11 Jun 2002 00:43:05 -0700 (PDT) Message-Id: <20020611.004305.96601553.davem@redhat.com> To: oliver@neukum.name Cc: roland@topspin.com, wjhun@ayrnetworks.com, paulus@samba.org, linux-kernel@vger.kernel.org Subject: Re: PCI DMA to small buffers on cache-incoherent arch From: "David S. Miller" In-Reply-To: <20020611.003625.05877183.davem@redhat.com> X-Mailer: Mew version 2.1 on Emacs 21.1 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org From: "David S. Miller" Date: Tue, 11 Jun 2002 00:36:25 -0700 (PDT) The DMA_ALIGN attribute doesn't work, on some systems the PCI cacheline size is determined at boot time not compile time. Another note, it could be per-PCI controller what this cacheline size is. We'll need to pass in a pdev to the alignment interfaces to do this correctly. So none of this can be done at compile time folks. - 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/