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RE: [Xen-devel] Is anyone working on HVM Paravirt drivers for windows?

To: "Michael Paesold" <mpaesold@xxxxxx>, <aball@xxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] Is anyone working on HVM Paravirt drivers for windows?
From: "Nowatzki, Thomas L" <Thomas.Nowatzki@xxxxxxxxxx>
Date: Thu, 16 Nov 2006 13:33:45 -0600
Cc: Ky Srinivasan <ksrinivasan@xxxxxxxxxx>, Xen Devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Hiromichi Itou <ito@xxxxxxxx>, Alan <alan@xxxxxxxxxxxxxxxxxxx>, "Bruce J \(HP-Labs\) Walker" <bruce.walker@xxxxxx>
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Thread-topic: [Xen-devel] Is anyone working on HVM Paravirt drivers for windows?
 
Several companies already sell products that include virtualized Windows
drivers.  I have no idea of how they developed and implemented their
drivers.  But assuming it was by a legal way, then I don't understand
how their making their source publicly available would be an issue.  



-----Original Message-----
From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Michael
Paesold
Sent: Thursday, November 16, 2006 1:15 PM
To: aball@xxxxxxxxxxxxxxxxxx
Cc: Ky Srinivasan; Xen Devel; Hiromichi Itou; Alan; Bruce J (HP-Labs)
Walker
Subject: Re: [Xen-devel] Is anyone working on HVM Paravirt drivers for
windows?

Andrew D. Ball wrote:
> That would be sad, but is possible.  Just like I don't believe Linux 
> drivers should be allowed to be non-GPL, not allowing drivers for 
> Windows to be GPL makes sense, unless the kernel is organized with 
> much more isolation as more of a microkernel.
> 
> Anyone's more informed thoughts on this would be appreciated.
> 
> Peace.
> Andrew
> 
> On Wed, 2006-11-15 at 07:46 -0700, Ky Srinivasan wrote:
>> I may be wrong here; but I think windows drivers cannot be
open-sourced. I recall reading that in windows DDK documentation.

I don't believe the problem is with Windows drivers, but with the
Windows Driver Development Kit. The DDK has a license incompatible with
the GPL. I think writing a driver without the kit would still be
possible, although difficult because it would require much more
knowledge about the Windows kernel.

Remarks: no facts, but just what I read on mailing lists.

Best Regards
Michael Paesold

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