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Subject: Re: Honest does not pay here ...
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Larry McVoy <lm@bitmover.com>
Cc: venom@sns.it, Matthias Andree <matthias.andree@gmx.de>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       Andre Hedrick <andre@linux-ide.org>
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On Wed, 2003-01-08 at 00:30, Larry McVoy wrote:
> 
> I may be showing my ignorance here (won't be the first time) but this makes
> me wonder if Linux could provide a way to do "user level drivers".  I.e.,
> drivers which ran in kernel mode but in the context of a process and had
> to talk to the real kernel via pipes or whatever.  It's a fair amount of
> plumbing but could have the advantage of being a more stable interface
> for the drivers. 

Its actually quite messy because level triggered interrupts create priority
handling problems and memory allocations create all sorts of amazing deadlocks

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