KVM: introduce irq_lock, use it to protect ioapic

Introduce irq_lock, and use to protect ioapic data structures.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index d1f9c87daa8..d47e660fb70 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -982,6 +982,7 @@ static struct kvm *kvm_create_vm(void)
         kvm_io_bus_init(&kvm->pio_bus);
         kvm_irqfd_init(kvm);
         mutex_init(&kvm->lock);
+        mutex_init(&kvm->irq_lock);
         kvm_io_bus_init(&kvm->mmio_bus);
         init_rwsem(&kvm->slots_lock);
         atomic_set(&kvm->users_count, 1);