trace: Properly initialize dynamic event states in hot-plugged vCPUs

Every time a vCPU is hot-plugged, it will "inherit" its tracing state
from the global state array. That is, if *any* existing vCPU has an
event enabled, new vCPUs will have too.

Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Message-id: 147428970768.15111.7664565956870423529.stgit@fimbulvetr.bsc.es
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/qom/cpu.c b/qom/cpu.c
index f783b5a6bd..f87fffabd1 100644
--- a/qom/cpu.c
+++ b/qom/cpu.c
@@ -333,6 +333,9 @@ static void cpu_common_realizefn(DeviceState *dev, Error **errp)
         cpu_synchronize_post_init(cpu);
         cpu_resume(cpu);
     }
+
+    /* NOTE: latest generic point where the cpu is fully realized */
+    trace_init_vcpu(cpu);
 }
 
 static void cpu_common_initfn(Object *obj)