cpumask: Use modern cpumask style in Xen

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Jeremy Fitzhardinge <jeremy@xensource.com>
LKML-Reference: <200911031458.38406.rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/drivers/xen/cpu_hotplug.c b/drivers/xen/cpu_hotplug.c
index bdfd584..0f765a9 100644
--- a/drivers/xen/cpu_hotplug.c
+++ b/drivers/xen/cpu_hotplug.c
@@ -86,7 +86,7 @@
 	for_each_possible_cpu(cpu) {
 		if (vcpu_online(cpu) == 0) {
 			(void)cpu_down(cpu);
-			cpu_clear(cpu, cpu_present_map);
+			set_cpu_present(cpu, false);
 		}
 	}