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Lpc2000

Index last updated: 2026-04-28 23:31 UTC

Message

Re: system and user modes

2006-04-19 by jayasooriah

Robert,

Given my aim is to present an alternative view, but not to impose this
on anyone who does not appreciate its merits, I like pointing out only
what I believe has been grossly mistated or incorrect:

--- In lpc2000@yahoogroups.com, Robert Adsett <subscriptions@...> >
Nonsense.  If the user application hangs up the fact that the user
code is 
> in user mode but the kernal in system mode won't make recovery
easier or 
> harder.

[example deleted]

If this were true, the notion of privilege or levels of privilage in
operating systems would meaningless.

> There is zero extra protection available by placing the kernal in
system 
> mode and the application in user mode.

You may not see them, but I do and we just have to agree to disagree.

[I tend to work towards clients requirements and not redefine them.
When they say they want to do this, I just show them how to.]

Cheers,

Jaya

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