KVM: do not call hardware_disable() on CPU_UP_CANCELED
authorLai Jiangshan <laijs@cn.fujitsu.com>
Sat, 17 Apr 2010 09:00:19 +0000 (17:00 +0800)
committerAvi Kivity <avi@redhat.com>
Mon, 17 May 2010 09:18:04 +0000 (12:18 +0300)
When CPU_UP_CANCELED, hardware_enable() has not been called at the CPU
which is going up because raw_notifier_call_chain(CPU_ONLINE)
has not been called for this cpu.

Drop the handling for CPU_UP_CANCELED.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
virt/kvm/kvm_main.c

index 4901ec5061ba3986fa04458d437eccb647200ae6..6dc940455e8b92477d25a195cf6fc70fd63134fc 100644 (file)
@@ -1931,11 +1931,6 @@ static int kvm_cpu_hotplug(struct notifier_block *notifier, unsigned long val,
                       cpu);
                hardware_disable(NULL);
                break;
-       case CPU_UP_CANCELED:
-               printk(KERN_INFO "kvm: disabling virtualization on CPU%d\n",
-                      cpu);
-               smp_call_function_single(cpu, hardware_disable, NULL, 1);
-               break;
        case CPU_ONLINE:
                printk(KERN_INFO "kvm: enabling virtualization on CPU%d\n",
                       cpu);