Signed-off-by: Lawrence Hunter <lawrence.hunter@codethink.co.uk>
---
 target/riscv/helper.h                        | 1 +
 target/riscv/insn32.decode                   | 1 +
 target/riscv/insn_trans/trans_rvzvkned.c.inc | 1 +
 target/riscv/vcrypto_helper.c                | 3 +++
 4 files changed, 6 insertions(+)

diff --git a/target/riscv/helper.h b/target/riscv/helper.h
index c626ddcee1..059d63b0ea 100644
--- a/target/riscv/helper.h
+++ b/target/riscv/helper.h
@@ -1191,3 +1191,4 @@ DEF_HELPER_6(vandn_vx_d, void, ptr, ptr, tl, ptr, env, i32)
 DEF_HELPER_4(vaesef_vv, void, ptr, ptr, env, i32)
 DEF_HELPER_4(vaesef_vs, void, ptr, ptr, env, i32)
 DEF_HELPER_4(vaesdf_vv, void, ptr, ptr, env, i32)
+DEF_HELPER_4(vaesdf_vs, void, ptr, ptr, env, i32)
diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index e9ccc56915..df1ae7425d 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -931,3 +931,4 @@ vandn_vx        000001 . ..... ..... 100 ..... 1010111 @r_vm
 vaesef_vv       101000 1 ..... 00011 010 ..... 1110111 @r2_vm_1
 vaesef_vs       101001 1 ..... 00011 010 ..... 1110111 @r2_vm_1
 vaesdf_vv       101000 1 ..... 00001 010 ..... 1110111 @r2_vm_1
+vaesdf_vs       101001 1 ..... 00001 010 ..... 1110111 @r2_vm_1
diff --git a/target/riscv/insn_trans/trans_rvzvkned.c.inc b/target/riscv/insn_trans/trans_rvzvkned.c.inc
index 134fd59df8..7a14c33e01 100644
--- a/target/riscv/insn_trans/trans_rvzvkned.c.inc
+++ b/target/riscv/insn_trans/trans_rvzvkned.c.inc
@@ -91,3 +91,4 @@ static bool vaes_check_vs(DisasContext *s, arg_rmr *a)
 GEN_V_UNMASKED_TRANS(vaesef_vv, vaes_check_vv)
 GEN_V_UNMASKED_TRANS(vaesef_vs, vaes_check_vs)
 GEN_V_UNMASKED_TRANS(vaesdf_vv, vaes_check_vv)
+GEN_V_UNMASKED_TRANS(vaesdf_vs, vaes_check_vs)
diff --git a/target/riscv/vcrypto_helper.c b/target/riscv/vcrypto_helper.c
index 8f448de86e..69e0843ae4 100644
--- a/target/riscv/vcrypto_helper.c
+++ b/target/riscv/vcrypto_helper.c
@@ -284,3 +284,6 @@ GEN_ZVKNED_HELPER_VS(vaesef_vs, aes_sub_bytes(round_state);
 GEN_ZVKNED_HELPER_VV(vaesdf_vv, aes_inv_shift_bytes(round_state);
                     aes_inv_sub_bytes(round_state);
                     xor_round_key(round_state, (uint8_t *)round_key);)
+GEN_ZVKNED_HELPER_VS(vaesdf_vs, aes_inv_shift_bytes(round_state);
+                    aes_inv_sub_bytes(round_state);
+                    xor_round_key(round_state, (uint8_t *)round_key);)
-- 
2.39.2