win-pv-drivers 8.x remove control/shutdown node as an acknowledgement,
instead of just clearing the content. This means the subsequent write
will create it anew, with default permissions (dom0 write, guest read).
Such permissions won't allow the guest to acknowledge subsequent
requests.
Workaround the issue by explicitly setting permissions after the write.
win-pv-drivers 8.x remove control/shutdown node as an acknowledgement, instead of just clearing the content. This means the subsequent write will create it anew, with default permissions (dom0 write, guest read). Such permissions won't allow the guest to acknowledge subsequent requests.
Workaround the issue by explicitly setting permissions after the write.