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Re: Interrupt processing, drivers, processes?

From: Marcus Brinkmann
Subject: Re: Interrupt processing, drivers, processes?
Date: Tue, 23 Apr 2002 13:49:34 +0200
User-agent: Mutt/1.3.28i

On Tue, Apr 23, 2002 at 12:42:36PM +0200, Jan Atle Ramsli wrote:
> But I have not yet figured out: Are drivers 'processes' now? Can they be
> killed?

Of course.
> If I ask L4 to sit on IRQ14/15 and tell me about stuff that must come in
> or go out, will I be doing 'interrupt processing' when I get those
> notifications?

Yes, at the abstract level.  The hardware interrupt will already have been
processed by L4, but you get the information in the interrupt in the
notification message.

> Or will something have happened (I am a 'user') so that I can be killed
> if misbehaving (I can imagine some of you hoping that could be taken
> literally :-)?

Well, yes, that is the whole point of having the drivers in user space :)


`Rhubarb is no Egyptian god.' Debian
Marcus Brinkmann              GNU

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