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Subject: Re: Devices with 36-bit paddr on 32-bit system
To: John-Mark Gurney <jmg@funkthat.com>, Justin Hibbits <jrh29@alumni.cwru.edu>
References: <CAHSQbTDsvB32+LyzHJO78VwUwAfUTMOUQp13BMCUpapSMT0fbg@mail.gmail.com>
 <20150826011434.GO33167@funkthat.com>
Cc: "freebsd-arch@freebsd.org" <freebsd-arch@freebsd.org>
From: Peter Grehan <grehan@freebsd.org>
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Date: Tue, 25 Aug 2015 18:17:29 -0700
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> I'd look at how i386's PAE does it, as this is exactly the same type
> of issue that PAE has...

  i386 PAE doesn't have any h/w resources at addresses > 4GB, which is 
the problem Justin is seeing on his ppc platform.

later,

Peter.