To: linux-kernel@vger.kernel.org
From: "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: The disappearing sys_call_table export.
Date: 14 May 2003 14:08:02 -0700
Organization: Transmeta Corporation, Santa Clara CA
Message-ID: <b9ub7i$1a0$1@cesium.transmeta.com>
References: <1052689591.30506.9.camel@dhcp22.swansea.linux.org.uk> <MDEHLPKNGKAHNMBLJOLKEEFFCOAA.davids@webmaster.com>
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Disclaimer: Not speaking for Transmeta in any way, shape, or form.
Copyright: Copyright 2003 H. Peter Anvin - All Rights Reserved
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Followup to:  <MDEHLPKNGKAHNMBLJOLKEEFFCOAA.davids@webmaster.com>
By author:    "David Schwartz" <davids@webmaster.com>
In newsgroup: linux.dev.kernel
> 
> 	I pointed out to them that any software mechanism I devised for shutting
> the system down would require that they had control over the system in order
> to invoke the mechanism.
> 
> 	They thought about that for a moment and were about to find that the system
> did not meet the requirements. I pointed out that anyone could pull the plug
> or network cable if needed or shut the system down at the switch and that
> this could be accomplished even if they lost control over the system and
> would certainly stop it from sending any information. They then agreed that
> the system met that requirement.
> 

"Sometimes it's possible to do in hardware what's impossible to do in
software."  Physical access is a powerful discriminator :)

	-hpa
-- 
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
"Unix gives you enough rope to shoot yourself in the foot."
Architectures needed: ia64 m68k mips64 ppc ppc64 s390 s390x sh v850 x86-64
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