Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---
 target/riscv/cpu.c | 4 ++++
 target/riscv/cpu.h | 1 +
 2 files changed, 5 insertions(+)

diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index 6111f0f0bc..38583e7a6e 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -436,6 +436,9 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp)
         if (cpu->cfg.ext_u) {
             target_misa |= RVU;
         }
+        if (cpu->cfg.ext_h) {
+            target_misa |= RVH;
+        }
 
         set_misa(env, RVXLEN | target_misa);
     }
@@ -472,6 +475,7 @@ static Property riscv_cpu_properties[] = {
     DEFINE_PROP_BOOL("c", RISCVCPU, cfg.ext_c, true),
     DEFINE_PROP_BOOL("s", RISCVCPU, cfg.ext_s, true),
     DEFINE_PROP_BOOL("u", RISCVCPU, cfg.ext_u, true),
+    DEFINE_PROP_BOOL("h", RISCVCPU, cfg.ext_h, false),
     DEFINE_PROP_STRING("priv_spec", RISCVCPU, cfg.priv_spec),
     DEFINE_PROP_STRING("user_spec", RISCVCPU, cfg.user_spec),
     DEFINE_PROP_BOOL("mmu", RISCVCPU, cfg.mmu, true),
diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h
index 5b3b32dbbc..342e628379 100644
--- a/target/riscv/cpu.h
+++ b/target/riscv/cpu.h
@@ -259,6 +259,7 @@ typedef struct RISCVCPU {
         bool ext_c;
         bool ext_s;
         bool ext_u;
+        bool ext_h;
 
         char *priv_spec;
         char *user_spec;
-- 
2.21.0