KVM: document locking for kvm_io_device_ops
slots_lock is taken everywhere when device ops are called.
Document this as we will use this to rework locking for io.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/virt/kvm/iodev.h b/virt/kvm/iodev.h
index 2c67f5a..06e38b2 100644
--- a/virt/kvm/iodev.h
+++ b/virt/kvm/iodev.h
@@ -20,6 +20,9 @@
struct kvm_io_device;
+/**
+ * kvm_io_device_ops are called under kvm slots_lock.
+ **/
struct kvm_io_device_ops {
void (*read)(struct kvm_io_device *this,
gpa_t addr,