From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from www.linux.org.uk (parcelfarce.linux.theplanet.co.uk [195.92.249.252]) by dsl2.external.hp.com (Postfix) with ESMTP id 284C8484C for ; Fri, 19 Jul 2002 06:03:09 -0600 (MDT) Received: from willy by www.linux.org.uk with local (Exim 3.33 #5) id 17VWTQ-0000lr-00; Fri, 19 Jul 2002 13:03:04 +0100 Date: Fri, 19 Jul 2002 13:03:04 +0100 From: Matthew Wilcox To: Stefan Pfetzing Cc: parisc-linux@lists.parisc-linux.org Subject: Re: [parisc-linux] Cdrecord and parisc64 kernel Message-ID: <20020719130304.T13352@parcelfarce.linux.theplanet.co.uk> References: <20020719114920.GA4928@dreamind.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <20020719114920.GA4928@dreamind.de>; from dreamind@dreamind.de on Fri, Jul 19, 2002 at 01:49:20PM +0200 Sender: parisc-linux-admin@lists.parisc-linux.org Errors-To: parisc-linux-admin@lists.parisc-linux.org List-Help: List-Post: List-Subscribe: , List-Id: parisc-linux developers list List-Unsubscribe: , List-Archive: On Fri, Jul 19, 2002 at 01:49:20PM +0200, Stefan Pfetzing wrote: > I just installed Debian/hppa on my HP Visualize C200. > After I've compiled a kernel for 64bit and tried to use cdrecord it crashed from the FAQ: 14. Can I run a 64-bit kernel on my machine ? The answer to this is generally determined by the firmware your machine runs. Workstations up to and including the J2240 and C360 only have 32-bit firmware. The normal 64-bit kernel will not run on these systems. The A500 and L2000 server only have 64-bit firmware, and these machines must run a 64-bit kernel. The C3000 and similar workstations have both 32-bit and 64-bit firmware and can therefore run either kernel. A more important question is : why do you want to run a 64-bit kernel ? Since we do not yet support 64-bit userspace, there is no advantage to be gained running a 64-bit kernel on a machine with less than 3.5GB of memory. For those who do want to test 64-bit kernels on older machines, there is a special configuration option `32-bit PDC' which will allow a 64-bit kernel to work with 32-bit firmware. We cannot enable this option by default as the resulting kernel will not work on machines with 64-bit firmware. -- Revolutions do not require corporate support.