Make xics_kvm_disconnect() able to undo the changes of a partial execution
of xics_kvm_connect() and use it to perform rollback.
Note that kvmppc_define_rtas_kernel_token(0) never fails, no matter the
RTAS call has been defined or not.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <156077922319.433243.609897156640506891.stgit@bahia.lan>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>