Date: Tue, 14 Jan 1997 16:22:38 -0800 (PST) From: Mike Branch <mbranch@svpal.org> To: Greg Lehey <grog@lemis.de> Cc: FreeBSD Questions <questions@FreeBSD.org> Subject: Re: the UNIX hole Message-ID: <Pine.3.88.9701141652.A21547-0100000@svpal.svpal.org> In-Reply-To: <199701130102.TAA00396@papillon.lemis.de>
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hi, there used to be a space in the high memory area, where device bios often loaded in a non-contiguous fashion. This was refered to as "the hole." (as I understand it). I think it is between the end of the kernel and the system bios (f000 on x86). Please correct me if you know different. Mike ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; Michael A. Branch "I turn big problems ;; ;; into little problems." ;; ;; ;; ;; mbranch@swordfish.eecs.berkeley.edu ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; On Sun, 12 Jan 1997, Greg Lehey wrote: > Mike Branch writes: > > hi, > > could anybody give an explanation about the UNIX "hole"? > > Is the hole filled in current versions of UNIX? Is it > > still advisable to configure devices in contiguous memory > > locations when building a kernel? > > (You can tell how far behind I am with my mail :-() > > I didn't see a reply to this one, and since I've never heard of the > "UNIX hole", I thought I'd ask you what you mean. > > Greg >
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