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Date: Tue, 26 Nov 2002 01:07:31 -0500 (EST)
From: Patrick Finnegan <pat@purdueriots.com>
To: Andi Kleen <ak@suse.de>
cc: Jeff Dike <jdike@karaya.com>, <linux-kernel@vger.kernel.org>
Subject: Re: uml-patch-2.5.49-1
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On 26 Nov 2002, Andi Kleen wrote:

> Jeff Dike <jdike@karaya.com> writes:
> > main points:
> > 	the kernel is in a separate process and address space from its processes
> > 	UML processes share a single host process
>
> Can you quickly describe why you didn't use one host process per uml
> process ?
>
> That would have avoided the need for a /proc/mm extension too I guess.

One reason I can think of is that it prevents 'stupid things' happening
under a copy of UML from killing the OS UML is running under... Eg. if a
process is running under UML because it's not trusted and then turns into
a forkbomb, you don't want that taking down the host OS.

Pat
--
Purdue Universtiy ITAP/RCS
Information Technology at Purdue
Research Computing and Storage
http://www-rcd.cc.purdue.edu


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