On Wed, Nov 01, 2006 at 12:08:02PM -0500, Vessey, Bruce A wrote:
> It would be nice if somebody releases HVM paravirt drivers for Windows as
> open source, but I'm not holding my breath.
> Why? Because of the Microsoft DDK license. There's no requirement that a
> Windows device driver developer use the
> Microsoft DDK, but in my experience most do. The typical methodology for a
> Windows driver developer is to take
> the sample code from the DDK as a starting point, and build the driver from
> there. But the DDK has some interesting
> licensing restrictions that, to me, don't look compatible with open source.
> The Microsoft DDK license is available at
> http://www.microsoft.com/whdc/devtools/ddk/ServerSP1DDKEULA.mspx Sections 3
> & 4 look particularly problematic.
>
> Maybe somebody out there is developing (or has developed) Windows drivers
> without any encumbrances from the Windows DDK.
> I think that's the only way we'll see open source Windows drivers.
>
Thanks for pointing this out.
How about XenSource/RedHat/Novell guys.. any comments?
-- Pasi
> - Bruce
>
> -----Original Message-----
> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
> [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Ben Thomas
> Sent: Monday, October 30, 2006 2:07 PM
> To: Daniel P. Berrange
> Cc: xen-devel@xxxxxxxxxxxxxxxxxxx; Dave Cameron
> Subject: Re: [Xen-devel] Is anyone working on HVM Paravirt drivers for
> windows?
>
> Hi,
>
> Our current PV on HVM drivers are based upon work that was submitted to
> xen-devel back in April. As you might recall, our focus has been concurrent
> support of 32 and 64 bit fully virtualized domains, and all of our work
> supports this. I'm sure that the concepts of what we've done, and what was
> placed into the open source project starting in July, are quite similar.
> However, given the time frames involved, and the base work not being included
> back in April, I also have no doubts that the interfaces aren't identical.
>
> As noted, we have these drivers running and performing extremely well at our
> beta customers. We support concurrent usage for both 32 and
> 64 bit user domains. The Linux code was released a short while back, and is
> open source and available for download on our website.
>
> The Windows drivers were completely developed in-house, and there are
> currently internal discussions about whether or not we will release them as
> open source.
>
> -b
>
>
> Daniel P. Berrange wrote:
> > Are they compatible with the current xen-unstable or 3.0.3 releases,
> > or do they have a dependnacy on the other hypervisor changes in the
> > VirtualIron codepath posted a few weeks back ?
> >
> > Regards,
> > Dan.
> >
> > On Fri, Oct 27, 2006 at 07:37:36AM -0400, Ben Thomas wrote:
> >
> >>Yes; we have.
> >>
> >>On 10/27/06, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
> >>
> >>>
> >>>OK.
> >>>
> >>>How about people from XenSource, VirtualIron, Intel, IBM, Fujitsu..
> >>>are you writing windows PV drivers?
> >>>
> >>>-- Pasi
> >>>
> >>>
>
> --
> ------------------------------------------------------------------------
> Ben Thomas Virtual Iron Software
> bthomas@xxxxxxxxxxxxxxx Tower 1, Floor 2
> 978-849-1214 900 Chelmsford Street
> Lowell, MA 01851
>
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