From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from oss.sgi.com (localhost [127.0.0.1]) by oss.sgi.com (8.12.3/8.12.3) with ESMTP id g4JJVmnC010063 for ; Sun, 19 May 2002 12:31:48 -0700 Received: (from majordomo@localhost) by oss.sgi.com (8.12.3/8.12.3/Submit) id g4JJVmxW010062 for linux-mips-outgoing; Sun, 19 May 2002 12:31:48 -0700 X-Authentication-Warning: oss.sgi.com: majordomo set sender to owner-linux-mips@oss.sgi.com using -f Received: from dea.linux-mips.net (localhost [127.0.0.1]) by oss.sgi.com (8.12.3/8.12.3) with ESMTP id g4JJVknC010052 for ; Sun, 19 May 2002 12:31:46 -0700 Received: (from ralf@localhost) by dea.linux-mips.net (8.11.6/8.11.1) id g4JJWJT03189; Sun, 19 May 2002 12:32:19 -0700 Date: Sun, 19 May 2002 12:32:19 -0700 From: Ralf Baechle To: Matthew Dharm Cc: Jun Sun , Daniel Jacobowitz , Linux-MIPS Subject: Re: MIPS 64? Message-ID: <20020519123219.F20670@dea.linux-mips.net> References: <3CE2DA46.3070402@mvista.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: ; from mdharm@momenco.com on Wed, May 15, 2002 at 03:16:29PM -0700 X-Accept-Language: de,en,fr Sender: owner-linux-mips@oss.sgi.com Precedence: bulk On Wed, May 15, 2002 at 03:16:29PM -0700, Matthew Dharm wrote: > Could someone give me an overview of how you're supposed to do a > handoff between a 32-bit loader and a 64-bit app? I'm guessing there > has to be a way to do it, but what I do know about the 64-bit stuff > doesn't show me how this is accomplished (I have visions of UX bits > floating in my head...) If you're placing the kernel in KSEG0 like all other current targets are doing then your 32-bit pointers are valid 64-bit pointers, no magic, no thinking necessary. Ralf