Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!auspex!guy
From: guy@auspex.auspex.com (Guy Harris)
Newsgroups: comp.unix.wizards
Subject: Re: Loading and Executing Object Code at Runtime
Message-ID: <6073@auspex.auspex.com>
Date: 15 Feb 91 23:11:31 GMT
References: <1991Feb13.212704.7016@cec1.wustl.edu> <BZS.91Feb14044321@world.std.com> <1991Feb14.182925.15793@mtxinu.COM>
Organization: Auspex Systems, Santa Clara
Lines: 7

>A quite widespread hideous idiosyncratic restriction is that on
>some architectures, notably the 386, you can't execute out of data
>space.

What's "data space", and how is it different from any other sort of
space?  (Most UNIX systems run with a flat address space on 386es.  PTEs
on the 386 only have a "writable" bit.)