Date: Mon, 23 Jun 1997 10:24:12 -0700 From: Julian Elischer <julian@whistle.com> 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 Message-ID: <33AEB13C.2781E494@whistle.com> 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
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