diff --git a/sys/arm/arm/machdep.c b/sys/arm/arm/machdep.c
index 53588ed358e..3296adaaa44 100644
--- a/sys/arm/arm/machdep.c
+++ b/sys/arm/arm/machdep.c
@@ -302,6 +302,8 @@ DELAY(int usec)
 void
 cpu_pcpu_init(struct pcpu *pcpu, int cpuid, size_t size)
 {
+
+	pcpu->pc_mpidr = 0xffffffff;
 }
 
 void
@@ -684,6 +686,7 @@ pcpu0_init(void)
 {
 	set_curthread(&thread0);
 	pcpu_init(pcpup, 0, sizeof(struct pcpu));
+	pcpup->pc_mpidr = cp15_mpidr_get() & 0xFFFFFF;
 	PCPU_SET(curthread, &thread0);
 }
 
diff --git a/sys/arm/arm/mp_machdep.c b/sys/arm/arm/mp_machdep.c
index 7507eb6d59a..6368f7b72da 100644
--- a/sys/arm/arm/mp_machdep.c
+++ b/sys/arm/arm/mp_machdep.c
@@ -162,6 +162,7 @@ init_secondary(int cpu)
 		;
 
 	pcpu_init(pc, cpu, sizeof(struct pcpu));
+	pc->pc_mpidr = cp15_mpidr_get() & 0xFFFFFF;
 	dpcpu_init(dpcpu[cpu - 1], cpu);
 #if defined(DDB)
 	dbg_monitor_init_secondary();
diff --git a/sys/arm/include/pcpu.h b/sys/arm/include/pcpu.h
index b1b1f8bb3de..4d609b10bf7 100644
--- a/sys/arm/include/pcpu.h
+++ b/sys/arm/include/pcpu.h
@@ -65,7 +65,8 @@ struct vmspace;
 	int pc_bp_harden_kind;						\
 	uint32_t pc_original_actlr;					\
 	uint64_t pc_clock;						\
-	char __pad[139]
+	uint32_t pc_mpidr;						\
+	char __pad[135]
 
 #ifdef _KERNEL