WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

Re: [Xen-devel] RE: GPL Win PV driver issues

On Fri, Dec 14, 2007 at 08:42:49PM +0100, Stefan de Konink wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA512
> 
> Luciano Rocha schreef:
> > As the emulated devices are well understood (and there's QEMU's source),
> > would this be hard to do?
> 
> Do you mean something like a 'fallback' method? Or more something like
> provide the options in your configuration file, and if they are not
> present don't create the devices?

Let's see if I can make it clear:

I'm not sure of the current type of devices emulated by qemu, but lets
suppose PIIXn for hard-disks/cdroms and ne2k for network.

What I suggest is develop drivers for windows for those devices. The
drivers would work with bare hardware, but when running under Xen (how
to check that, I currently don't know), it would inform the
hypervisor/dom0 that it will switch then to the fast-path method
(ring-buffers, direct hypercalls, etc., instead of emulated PIO).

So there would be no need to hide the "qemu" devices, nor toggle
switches for when the para-virtualized drivers are installed or not.

-- 
lfr
0/0

Attachment: pgpCxbWhg5XXn.pgp
Description: PGP signature

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel