diff --git a/hw/arm/smmuv3.c b/hw/arm/smmuv3.c
index 3b43368be0..674623aabe 100644
--- a/hw/arm/smmuv3.c
+++ b/hw/arm/smmuv3.c
@@ -278,6 +278,12 @@ static void smmuv3_init_regs(SMMUv3State *s)
     s->features = 0;
     s->sid_split = 0;
     s->aidr = 0x1;
+    s->cr[0] = 0;
+    s->cr0ack = 0;
+    s->irq_ctrl = 0;
+    s->gerror = 0;
+    s->gerrorn = 0;
+    s->statusr = 0;
 }
 
 static int smmu_get_ste(SMMUv3State *s, dma_addr_t addr, STE *buf,