1 files changed, 6 insertions, 8 deletions

diff --git a/arch/x86_64/kernel/smpboot.c b/arch/x86_64/kernel/smpboot.c
index 3ae9ffddddc0..7b7a6870288a 100644
--- a/arch/x86_64/kernel/smpboot.c
+++ b/arch/x86_64/kernel/smpboot.c
@@ -1091,7 +1091,6 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
         /*
          * Switch from PIC to APIC mode.
          */
-        connect_bsp_APIC();
         setup_local_APIC();
 
         if (GET_APIC_ID(apic_read(APIC_ID)) != boot_cpu_id) {
@@ -1176,12 +1175,9 @@ int __cpuinit __cpu_up(unsigned int cpu)
 void __init smp_cpus_done(unsigned int max_cpus)
 {
         smp_cleanup_boot();
-
-#ifdef CONFIG_X86_IO_APIC
         setup_ioapic_dest();
-#endif
-
         check_nmi_watchdog();
+        time_init_gtod();
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
@@ -1234,6 +1230,8 @@ int __cpu_disable(void)
         if (cpu == 0)
                 return -EBUSY;
 
+        if (nmi_watchdog == NMI_LOCAL_APIC)
+                stop_apic_nmi_watchdog(NULL);
         clear_local_APIC();
 
         /*
@@ -1273,11 +1271,11 @@ void __cpu_die(unsigned int cpu)
         printk(KERN_ERR "CPU %u didn't die...\n", cpu);
 }
 
-__init int setup_additional_cpus(char *s)
+static __init int setup_additional_cpus(char *s)
 {
-        return get_option(&s, &additional_cpus);
+        return s && get_option(&s, &additional_cpus) ? 0 : -EINVAL;
 }
-__setup("additional_cpus=", setup_additional_cpus);
+early_param("additional_cpus", setup_additional_cpus);
 
 #else /* ... !CONFIG_HOTPLUG_CPU */