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Re: Generic DISCONTIGMEM Support on 32bit MIPS

To: Phil Thompson <phil@river-bank.demon.co.uk>
Subject: Re: Generic DISCONTIGMEM Support on 32bit MIPS
From: Ralf Baechle <ralf@oss.sgi.com>
Date: Fri, 25 Jan 2002 12:44:29 -0800
Cc: linux-mips@oss.sgi.com
In-reply-to: <3C51838A.174F8712@river-bank.demon.co.uk>; from phil@river-bank.demon.co.uk on Fri, Jan 25, 2002 at 04:10:50PM +0000
References: <3C51838A.174F8712@river-bank.demon.co.uk>
Sender: owner-linux-mips@oss.sgi.com
User-agent: Mutt/1.2.5i
On Fri, Jan 25, 2002 at 04:10:50PM +0000, Phil Thompson wrote:

> I'm working on a port of 32bit MIPS to a board with several large holes
> in the memory map. So I need to re-implement paging_init() and
> mem_init().
> 
> The first question is: has anybody already done this? Particularly as,
> once you've identified where the holes are, the code isn't board
> specific.
> 
> If not then I'll try to work out what needed from the corresponding
> mips64 and ip27 code, but I'd appreciate any pointers.

Great, I was already planning to do this next.  Discontiguous memory is a
common problem on MIPS systems; it's almost standard for systems that
have more than 256mb of memory.

  Ralf

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