diff options
| author | Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> | 2010-11-16 17:35:02 +0900 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-01-02 12:16:11 +0200 |
| commit | 8bc5e36b3bacbaead963b5c50b4da96828093a7d (patch) | |
| tree | 86d9a93cc29759dd1aa868f8dd9a535327bc96b8 /virt/kvm/kvm_main.c | |
| parent | 61ce0c3de804a892411454686b433c020f4b62f2 (diff) | |
KVM: take kvm_lock for hardware_disable() during cpu hotplug
In kvm_cpu_hotplug(), only CPU_STARTING case is protected by kvm_lock.
This patch adds missing protection for CPU_DYING case.
Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'virt/kvm/kvm_main.c')
| -rw-r--r-- | virt/kvm/kvm_main.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 42e798ebf768..193ee04de45c 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -2148,7 +2148,9 @@ static int kvm_cpu_hotplug(struct notifier_block *notifier, unsigned long val, case CPU_DYING: printk(KERN_INFO "kvm: disabling virtualization on CPU%d\n", cpu); + spin_lock(&kvm_lock); hardware_disable(NULL); + spin_unlock(&kvm_lock); break; case CPU_STARTING: printk(KERN_INFO "kvm: enabling virtualization on CPU%d\n", |