linux-kernel - Re: [RFC] Simple userspace interface for PCI drivers

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Message-ID: <44F755C2.8090007@gmail.com>
Date:	Fri, 01 Sep 2006 01:33:54 +0400
From:	Manu Abraham <abraham.manu@...il.com>
To:	Xavier Bestel <xavier.bestel@...e.fr>
CC:	Lee Revell <rlrevell@...-job.com>, Greg KH <greg@...ah.com>,
	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [RFC] Simple userspace interface for PCI drivers

Xavier Bestel wrote:
> Le jeudi 31 août 2006 à 17:12 -0400, Lee Revell a écrit :
>> On Thu, 2006-08-31 at 22:58 +0200, Xavier Bestel wrote:
>>> Precisely. How do you know the bugreport you received isn't caused by
>>> some weird binary userspace driver hosing the PCI bus ? 
>> Can't X, or any application that access hardware directly by
>> mmaping /dev/mem, do this now?
> 
> Yes they can, but X's behavior is pretty well known by now :) and it's
> open source.
> 

what about binary drivers in kernel like nVidia or ATI ?

Well above all, user-space drivers can be of help in a lot of other
ways. An example is rapid prototyping. Some times it makes sense as well
to do in user-space, where you can really control things. Drivers using
math is an example


Manu
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