diff --git a/meta/conf/machine/include/riscv/qemuriscv.inc b/meta/conf/machine/include/riscv/qemuriscv.inc
index d01d988eee..6170ce65f2 100644
--- a/meta/conf/machine/include/riscv/qemuriscv.inc
+++ b/meta/conf/machine/include/riscv/qemuriscv.inc
@@ -27,6 +27,7 @@ UBOOT_ENTRYPOINT:riscv64 = "0x80200000"
 # qemuboot options
 QB_SMP ?= "-smp 4"
 QB_KERNEL_CMDLINE_APPEND = "earlycon=sbi"
+QB_CPU = "-cpu rv64, sv39=true"
 QB_MACHINE = "-machine virt"
 QB_DEFAULT_BIOS = "fw_jump.elf"
 QB_TAP_OPT = "-netdev tap,id=net0,ifname=@TAP@,script=no,downscript=no"