From Chris Smowton on xen-devel…
About 4-5 months ago, I wrote some userland libraries to go against James Harper’s PV drivers for Windows Xen guests (http://wiki.xensource.com/xenwiki/XenWindowsGplPv). These provide a Xenstore, event channel and userland page granting interface very similar to those provided to Linux apps. I sent patches to James some months ago, but hearing no feedback for some time I’ve pushed my patches to a Github repo.
If anyone’s interested in the code, it can be found at http://github.com/smowton/xen-pv-windows-evtchn
Any questions please email firstname.lastname@example.org