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Re: MIPS 64?

To: Matthew Dharm <mdharm@momenco.com>
Subject: Re: MIPS 64?
From: Ralf Baechle <ralf@oss.sgi.com>
Date: Sun, 19 May 2002 12:32:19 -0700
Cc: Jun Sun <jsun@mvista.com>, Daniel Jacobowitz <dan@debian.org>, Linux-MIPS <linux-mips@oss.sgi.com>
In-reply-to: <NEBBLJGMNKKEEMNLHGAIKEABCHAA.mdharm@momenco.com>; from mdharm@momenco.com on Wed, May 15, 2002 at 03:16:29PM -0700
References: <3CE2DA46.3070402@mvista.com> <NEBBLJGMNKKEEMNLHGAIKEABCHAA.mdharm@momenco.com>
Sender: owner-linux-mips@oss.sgi.com
User-agent: Mutt/1.2.5.1i
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

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