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

To: "Daniel P. Berrange" <berrange@xxxxxxxxxx>
Subject: Re: [Xen-devel] Is anyone working on HVM Paravirt drivers for windows?
From: Michael Paesold <mpaesold@xxxxxx>
Date: Thu, 16 Nov 2006 21:46:00 +0100
Cc: Hiromichi Itou <ito@xxxxxxxx>, Xen Devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Bruce J \(HP-Labs\) Walker" <bruce.walker@xxxxxx>, Ky Srinivasan <ksrinivasan@xxxxxxxxxx>, aball@xxxxxxxxxxxxxxxxxx, Alan <alan@xxxxxxxxxxxxxxxxxxx>
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Daniel P. Berrange wrote:
On Thu, Nov 16, 2006 at 08:14:52PM +0100, Michael Paesold wrote:
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.

Just do a chinese wall, clean room implementation then. One person has the
DDK and writes a spec for the driver. The second writes the actual driver
based on the spec - never looking at the DDK directly. A little more work
sure, but certainly doable.

Yes, of course. Just find two guys to do the work. ;-)

Best Regards
Michael Paesold

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