Index: sys/mips/mips/mp_machdep.c
===================================================================
--- sys/mips/mips/mp_machdep.c
+++ sys/mips/mips/mp_machdep.c
@@ -60,6 +60,7 @@
 
 static volatile int aps_ready;
 static volatile int mp_naps;
+static volatile register_t saved_hwrena;
 
 static void
 ipi_send(struct pcpu *pc, int ipi)
@@ -246,6 +247,10 @@
 	int error, cpuid;
 	cpuset_t cpumask;
 
+	/* Stash the BSP HWREna to share with the APs. */
+	saved_hwrena = mips_rd_hwrena();
+	mips_sync();
+
 	mtx_init(&ap_boot_mtx, "ap boot", NULL, MTX_SPIN);
 
 	CPU_ZERO(&all_cpus);
@@ -292,6 +297,9 @@
 
 	mips_wr_entryhi(0);
 
+	/* Load up the BSP's hwrena, so it's on all CPUs */
+	mips_wr_hwrena(saved_hwrena);
+
 	pcpu_init(PCPU_ADDR(cpuid), cpuid, sizeof(struct pcpu));
 	dpcpu_init(dpcpu, cpuid);