diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index 3faf703131..b9b3879281 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -444,6 +444,9 @@ static void rv64_veyron_v1_cpu_init(Object *obj)
 
     /* Enable ISA extensions */
     cpu->cfg.mmu = true;
+    cpu->cfg.ext_ifencei = true;
+    cpu->cfg.ext_icsr = true;
+    cpu->cfg.pmp = true;
     cpu->cfg.ext_icbom = true;
     cpu->cfg.cbom_blocksize = 64;
     cpu->cfg.cboz_blocksize = 64;