xen: introduce xen_change_state_handler Remove the call to xenstore_record_dm_state from xen_main_loop_prepare that is HVM specific. Add a new vm_change_state_handler shared between xen_pv and xen_hvm machines to record the VM state to xenstore. Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Alexander Graf <agraf@suse.de>