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To: linux-kernel@vger.kernel.org
From: "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: User Space Emulation of Devices
Date: 12 Sep 2001 15:14:57 -0700
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In-Reply-To: <54045BFDAD47D5118A850002A5095CC30AC57D@exchange1.cam.pace.co.uk> <20010912122826.A6153@bug.ucw.cz> <20010912214444Z271795-760+12170@vger.kernel.org>
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Followup to:  <20010912214444Z271795-760+12170@vger.kernel.org>
By author:    Oliver Neukum <Oliver.Neukum@lrz.uni-muenchen.de>
In newsgroup: linux.dev.kernel
> 
> How do you pass an ioctl ? If any parameter is a pointer you actually need a 
> complex protocol for passing memory content to make it useful.
> 

You need a parameter marshalling system; however, they do exist.  It
might actually be that the best way to deal with this is to make a
general module framework and compile a specific module to marshall the
parameters of the device you want to emulate.

	-hpa
-- 
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