From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 12 Jan 2001 04:45:21 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 12 Jan 2001 04:45:11 -0500 Received: from brutus.conectiva.com.br ([200.250.58.146]:23029 "EHLO lappi.waldorf-gmbh.de") by vger.kernel.org with ESMTP id ; Fri, 12 Jan 2001 04:44:55 -0500 Date: Fri, 12 Jan 2001 03:56:20 -0200 From: Ralf Baechle To: David Weinehall Cc: Alan Cox , Linus Torvalds , "Eric W. Biederman" , Andrea Arcangeli , David Woodhouse , Zlatko Calusic , Rik van Riel , linux-kernel@vger.kernel.org Subject: Re: Subtle MM bug Message-ID: <20010112035620.B1254@bacchus.dhis.org> In-Reply-To: <20010111005657.B2243@khan.acc.umu.se> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20010111005657.B2243@khan.acc.umu.se>; from tao@acc.umu.se on Thu, Jan 11, 2001 at 12:56:57AM +0100 X-Accept-Language: de,en,fr Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jan 11, 2001 at 12:56:57AM +0100, David Weinehall wrote: > > The MMU on these systems is a CAM, and the mmu table is thus backwards to > > convention. (It also means you can notionally map two physical addresses to > > one virtual but thats undefined in the implementation ;)) > > Are there any other (not yet supported) platforms with similar (or other > unrelated, but hard to support because of the current architecture of > the kernel) problems? > > (No, I have no secret trumps up my sleeve, I'm just curious.) Having a reverse mappings is the least sucky way to handle virtual aliases of certain types of MIPS caches. Ralf -- "Embrace, Enhance, Eliminate" - it worked for the pope, it'll work for Bill. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/