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Date: Mon, 23 Jun 1997 10:24:12 -0700
From: Julian Elischer <julian@whistle.com>
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To: Michael Smith <msmith@atrad.adelaide.edu.au>
CC: Steve Howe <un_x@anchorage.net>, joerg_wunsch@uriah.heep.sax.de,
        hackers@FreeBSD.ORG
Subject: Re: direct access
References: <199706231157.VAA18802@genesis.atrad.adelaide.edu.au>
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Michael Smith wrote:
> 

> 
> One of these mappings arranges pages so that kernel virtual addresses
> in the range 0xa0000-0xfffff refer to physical addresses
> 0xa0000-0xfffff, in order to make life slightly easier for ISA
> drivers.  It doesn't apply to user processes, which have their own
> mappings.
> 
>

*GONG*
the kernel maps 0xa0000->0xfffff to 0xf00a000->0xf00fffff