diff --git a/drivers/rptun/rptun_bmp.c b/drivers/rptun/rptun_bmp.c
index a989ecc774a..719d8e1b8bf 100644
--- a/drivers/rptun/rptun_bmp.c
+++ b/drivers/rptun/rptun_bmp.c
@@ -46,6 +46,7 @@ struct rptun_bmp_dev_s
   char                    cpuname[RPMSG_NAME_SIZE + 1];
   int                     irq_event;
   int                     irq_trigger;
+  cpu_set_t               cpuset;
 };
 
 /****************************************************************************
@@ -122,12 +123,8 @@ static int rptun_bmp_stop(FAR struct rptun_dev_s *dev)
 static int rptun_bmp_notify(FAR struct rptun_dev_s *dev, uint32_t vqid)
 {
   FAR struct rptun_bmp_dev_s *priv = (FAR struct rptun_bmp_dev_s *)dev;
-  cpu_set_t cpuset;
 
-  CPU_ZERO(&cpuset);
-  CPU_SET(0, &cpuset);
-
-  up_trigger_irq(priv->irq_trigger, cpuset);
+  up_trigger_irq(priv->irq_trigger, priv->cpuset);
   return 0;
 }
 
@@ -186,7 +183,7 @@ static int rprun_bmp_interrupt(int irq, FAR void *context, FAR void *arg)
 
 int rptun_bmp_init(FAR const char *cpuname, bool master,
                    FAR struct rptun_rsc_s *rsc, int irq_event,
-                   int irq_trigger)
+                   int irq_trigger, cpu_set_t remote_cpu)
 {
   FAR struct rptun_bmp_dev_s *dev;
   int ret;
@@ -202,6 +199,8 @@ int rptun_bmp_init(FAR const char *cpuname, bool master,
   dev->irq_event = irq_event;
   dev->rptun.ops = &g_rptun_bmp_ops;
   dev->rsc = rsc;
+  dev->cpuset = remote_cpu;
+
   strlcpy(dev->cpuname, cpuname, sizeof(dev->cpuname));
 
   ret = irq_attach(dev->irq_event,
diff --git a/include/nuttx/rptun/rptun_bmp.h b/include/nuttx/rptun/rptun_bmp.h
index c1f1819213f..0d87ba78a6d 100644
--- a/include/nuttx/rptun/rptun_bmp.h
+++ b/include/nuttx/rptun/rptun_bmp.h
@@ -54,6 +54,7 @@ extern "C"
  *   rsc - The resource for shared memory
  *   irq_event - Interrupt ID to attach
  *   irq_trigger - Interrupt ID to trigger
+ *   remote_cpu - Remote CPU ID
  *
  * Returned Value:
  *   OK on success, negated errno on failure
@@ -62,7 +63,7 @@ extern "C"
 
 int rptun_bmp_init(FAR const char *cpuname, bool master,
                    FAR struct rptun_rsc_s *rsc, int irq_event,
-                   int irq_trigger);
+                   int irq_trigger, cpu_set_t remote_cpu);
 
 #undef EXTERN
 #ifdef __cplusplus