Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265492AbUF2GNR (ORCPT ); Tue, 29 Jun 2004 02:13:17 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265494AbUF2GNR (ORCPT ); Tue, 29 Jun 2004 02:13:17 -0400 Received: from palrel12.hp.com ([156.153.255.237]:46492 "EHLO palrel12.hp.com") by vger.kernel.org with ESMTP id S265492AbUF2GNP (ORCPT ); Tue, 29 Jun 2004 02:13:15 -0400 From: David Mosberger MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <16609.2168.754171.270072@napali.hpl.hp.com> Date: Mon, 28 Jun 2004 23:13:12 -0700 To: arjanv@redhat.com Cc: davidm@hpl.hp.com, Jeff Garzik , Terence Ripperda , Linux Kernel Mailing List Subject: Re: 32-bit dma allocations on 64-bit platforms In-Reply-To: <1088234187.2805.3.camel@laptop.fenrus.com> References: <20040623183535.GV827@hygelac> <40D9D7BA.7020702@pobox.com> <16605.1055.383447.805653@napali.hpl.hp.com> <1088234187.2805.3.camel@laptop.fenrus.com> X-Mailer: VM 7.18 under Emacs 21.3.1 Reply-To: davidm@hpl.hp.com X-URL: http://www.hpl.hp.com/personal/David_Mosberger/ Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 759 Lines: 17 >>>>> On Sat, 26 Jun 2004 09:16:27 +0200, Arjan van de Ven said: Arjan> the real solution is an iommu of course, but the highmem Arjan> solution has quite some merit too..... I know you disagree Arjan> with me on that one though. Yes, some merits and some faults. The real solution is iommu or 64-bit capable devices. Interesting that graphics controllers should be last to get 64-bit DMA capability, considering how much more complex they are than disk controllers or NICs. --david - 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/