Signed-off-by: Asias He <asias.hejun@xxxxxxxxx>
---
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 9675090..aa9b1bd 100644
--- a/tools/kvm/virtio-console.c
+++ b/tools/kvm/virtio-console.c
@@ -163,6 +163,8 @@ static bool virtio_console_pci_io_out(struct kvm *self, uint16_t port, void *dat
unsigned long offset = port - IOPORT_VIRTIO_CONSOLE;
bool ret = true;
+ mutex_lock(&console_device.mutex);
+
switch (offset) {
case VIRTIO_PCI_GUEST_FEATURES:
console_device.guest_features = ioport__read32(data);
--
1.7.4.1
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