Date: Tue, 12 Jun 2001 19:56:53 +0200 (CEST) From: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> To: Warner Losh <imp@harmony.village.org> Cc: Poul-Henning Kamp <phk@critter.freebsd.dk>, Mike Smith <msmith@FreeBSD.ORG>, freebsd-hackers@FreeBSD.ORG Subject: Re: Patented algorithm in FreeBSD Message-ID: <Pine.LNX.3.96.1010612194320.2087A-100000@artax.karlin.mff.cuni.cz> In-Reply-To: <200106121633.f5CGXjV94720@harmony.village.org>
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> : Well, the application date is what counts, and that's mar1992, but I'm > : pretty sure that Bill Jolitz had them beat to that date already... > > I'm pretty sure that VMS 3.x used a similar technique. I have my old > VMS internals docs from that time frame (maybe they are from 4.x). > We're talking pre 1990 for sure. Afaik VAX had one-level (pageable) page tables, so they were contignuous by definition - no need to build special window. Recent versions of VMS on Alpha use this trick - I've read about it in some paper and that's how I've found the patent. Mikulas To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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