hw/vfio/ap: attribute constructor for cfg_chg_events_lock

Created an attribute constructor for cfg_chg_events_lock for locking
mechanism when storing event information for an AP configuration change
event

Fixes: fd03360215 ("Storing event information for an AP configuration change event")
Signed-off-by: Rorie Reyes <rreyes@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250611211252.82107-1-rreyes@linux.ibm.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>

diff --git a/hw/vfio/ap.c b/hw/vfio/ap.c
index 874e0d1eaf1dafa105f9f42705e9973ffc719803..1df4438149d2a06ef176e03e358336381bfa4caa 100644 (file)
--- a/hw/vfio/ap.c
+++ b/hw/vfio/ap.c
@@ -52,6 +52,11 @@ static QTAILQ_HEAD(, APConfigChgEvent) cfg_chg_events =
 
 static QemuMutex cfg_chg_events_lock;
 
+static void __attribute__((constructor)) vfio_ap_global_init(void)
+{
+    qemu_mutex_init(&cfg_chg_events_lock);
+}
+
 OBJECT_DECLARE_SIMPLE_TYPE(VFIOAPDevice, VFIO_AP_DEVICE)
 
 static void vfio_ap_compute_needs_reset(VFIODevice *vdev)
@@ -230,13 +235,6 @@ static void vfio_ap_realize(DeviceState *dev, Error **errp)
     VFIOAPDevice *vapdev = VFIO_AP_DEVICE(dev);
     VFIODevice *vbasedev = &vapdev->vdev;
 
-    static bool lock_initialized;
-
-    if (!lock_initialized) {
-        qemu_mutex_init(&cfg_chg_events_lock);
-        lock_initialized = true;
-    }
-
     if (!vfio_device_get_name(vbasedev, errp)) {
         return;
     }