Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!henry
From: henry@utzoo.UUCP (Henry Spencer)
Newsgroups: comp.unix.wizards
Subject: Re: Ultrix 1.2 and shared memory
Message-ID: <8242@utzoo.UUCP>
Date: Fri, 3-Jul-87 14:39:22 EDT
Article-I.D.: utzoo.8242
Posted: Fri Jul  3 14:39:22 1987
Date-Received: Fri, 3-Jul-87 14:39:22 EDT
References: <596@cfa.cfa.harvard.EDU>, <2365@ci-dandelion.UUCP>
Organization: U of Toronto Zoology
Lines: 11

> Now if the VAX had the ability to handle gaps in its page tables (like
> an Apollo or IBM PC/RT) we could attach shared segments off in outer
> space and not have to worry about it.

Note that since the VAX user page tables are in kernel *virtual* space,
the VAX can in fact have gaps in its page tables if you manage the kernel
page table cleverly.  (Always looked that way to me, anyway -- never tried
it personally.)
-- 
Mars must wait -- we have un-         Henry Spencer @ U of Toronto Zoology
finished business on the Moon.     {allegra,ihnp4,decvax,pyramid}!utzoo!henry