[PATCH 2/3] kvm tools: Make virtio-console kvm__irq_line thread safe

[Asias He <asias.hejun@gmail.com>]

Signed-off-by: Asias He <asias.hejun@gmail.com>
---
 tools/kvm/virtio-console.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/tools/kvm/virtio-console.c b/tools/kvm/virtio-console.c
index e66d198..492c859 100644
--- a/tools/kvm/virtio-console.c
+++ b/tools/kvm/virtio-console.c
@@ -162,7 +162,9 @@ static void virtio_console_handle_callback(struct kvm *self, void *param)
 		virt_queue__set_used_elem(vq, head, len);
 	}
 
+	mutex_lock(&console_device.mutex);
 	kvm__irq_line(self, VIRTIO_CONSOLE_IRQ, 1);
+	mutex_unlock(&console_device.mutex);
 }
 
 static bool virtio_console_pci_io_out(struct kvm *self, uint16_t port, void *data, int size, uint32_t count)
-- 
1.7.4.4