From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: pte_pagenr/MAP_NR deleted in pre6 Date: Thu, 17 Aug 2000 20:56:05 +0100 (BST) In-Reply-To: <200008171950.MAA45378@google.engr.sgi.com> from "Kanoj Sarcar" at Aug 17, 2000 12:50:40 PM MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-Id: From: Alan Cox Sender: owner-linux-mm@kvack.org Return-Path: To: Kanoj Sarcar Cc: "David S. Miller" , alan@lxorguk.ukuu.org.uk, sct@redhat.com, roman@augan.com, linux-mm@kvack.org, linux-kernel@vger.rutgers.edu, rmk@arm.linux.org.uk, nico@cam.org, davidm@hpl.hp.com List-ID: > So, unlike system vendors adding in dma mapping registers for PCI32 > devices to dma anywhere into their >32 bit physical address space, you > are assuming no vendor will ever have a mapping scheme for ISA devices > that let them get over the 16MB mark? They did. Even on a few x86 boards. Supporting those bits of weirdness are not important. If the ISA 16Mb window is offset someone can wrap it in their arch specific isa_alloc_consistent code.. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux.eu.org/Linux-MM/