Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 5 Mar 2002 11:46:10 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 5 Mar 2002 11:46:00 -0500 Received: from deimos.hpl.hp.com ([192.6.19.190]:52463 "EHLO deimos.hpl.hp.com") by vger.kernel.org with ESMTP id ; Tue, 5 Mar 2002 11:44:47 -0500 From: David Mosberger MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <15492.62946.952197.632931@napali.hpl.hp.com> Date: Tue, 5 Mar 2002 08:44:18 -0800 To: "David S. Miller" Cc: sp@scali.com, adam@yggdrasil.com, linux-kernel@vger.kernel.org Subject: Re: Does kmalloc always return address below 4GB? In-Reply-To: <20020305.074722.25911127.davem@redhat.com> In-Reply-To: <200203051112.DAA03159@adam.yggdrasil.com> <20020305.031636.63129004.davem@redhat.com> <3C84E785.1D102FF9@scali.com> <20020305.074722.25911127.davem@redhat.com> X-Mailer: VM 7.01 under Emacs 21.1.1 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 >>>>> On Tue, 05 Mar 2002 07:47:22 -0800 (PST), "David S. Miller" said: DaveM> I know pci_map_single (and _sg) will use bounce buffers on DaveM> platforms without an IOMMU, DaveM> 64-bit platforms without IOMMU use HIGHMEM. Not true for ia64 linux. DaveM> It could for example be solved with a GFP_32BIT flag or DaveM> something (on IA64 I know GFP_DMA is used in DaveM> pci_alloc_consistent() to get memory below 4GB but that can't DaveM> be used on all platforms). DaveM> IA64 was broken, it now uses HIGHMEM. No it doesn't. Perhaps you meant to say that the Red Hat version of the ia64 linux kernel uses highmem? --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/