1 files changed, 35 insertions, 0 deletions
diff --git a/plugins/api.c b/plugins/api.c
index 6bdb26bbe3..4431a0ea7e 100644
--- a/plugins/api.c
+++ b/plugins/api.c
@@ -39,6 +39,7 @@
 #include "qemu/main-loop.h"
 #include "qemu/plugin.h"
 #include "qemu/log.h"
+#include "qemu/timer.h"
 #include "tcg/tcg.h"
 #include "exec/exec-all.h"
 #include "exec/gdbstub.h"
@@ -583,3 +584,37 @@ uint64_t qemu_plugin_u64_sum(qemu_plugin_u64 entry)
     }
     return total;
 }
+
+/*
+ * Time control
+ */
+static bool has_control;
+
+const void *qemu_plugin_request_time_control(void)
+{
+    if (!has_control) {
+        has_control = true;
+        return &has_control;
+    }
+    return NULL;
+}
+
+#ifdef CONFIG_SOFTMMU
+static void advance_virtual_time__async(CPUState *cpu, run_on_cpu_data data)
+{
+    int64_t new_time = data.host_ulong;
+    qemu_clock_advance_virtual_time(new_time);
+}
+#endif
+
+void qemu_plugin_update_ns(const void *handle, int64_t new_time)
+{
+#ifdef CONFIG_SOFTMMU
+    if (handle == &has_control) {
+        /* Need to execute out of cpu_exec, so bql can be locked. */
+        async_run_on_cpu(current_cpu,
+                         advance_virtual_time__async,
+                         RUN_ON_CPU_HOST_ULONG(new_time));
+    }
+#endif
+}