Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 11 Jun 2002 00:24:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 11 Jun 2002 00:24:39 -0400 Received: from [209.237.59.50] ([209.237.59.50]:59476 "EHLO zinfandel.topspincom.com") by vger.kernel.org with ESMTP id ; Tue, 11 Jun 2002 00:24:39 -0400 To: Brad Hards Cc: "David S. Miller" , linux-kernel@vger.kernel.org Subject: Re: PCI DMA to small buffers on cache-incoherent arch In-Reply-To: <15619.9534.521209.93822@nanango.paulus.ozlabs.org> <20020610.201033.66168406.davem@redhat.com> <52lm9m7969.fsf@topspin.com> <200206111416.13493.bhards@bigpond.net.au> X-Message-Flag: Warning: May contain useful information X-Priority: 1 X-MSMail-Priority: High From: Roland Dreier Date: 10 Jun 2002 21:24:35 -0700 Message-ID: <52heka788s.fsf@topspin.com> Lines: 13 User-Agent: Gnus/5.0808 (Gnus v5.8.8) XEmacs/21.4 (Common Lisp) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org >>>>> "Brad" == Brad Hards writes: Brad> Would it be enought to move the transfer buffers to the Brad> start of the device struct, and then pad it up to a Brad> cacheline? Something like the __dma_buffer macro I posted earlier makes it even simpler. I'll make a patch that adds so we have something concrete to discuss. Best, 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/