diff --git a/target/riscv/cpu_cfg.h b/target/riscv/cpu_cfg.h
index 0873300..634ff67 100644
--- a/target/riscv/cpu_cfg.h
+++ b/target/riscv/cpu_cfg.h
@@ -101,6 +101,9 @@
     bool ext_zvkn;
     bool ext_zvknc;
     bool ext_zvkng;
+    bool ext_zvks;
+    bool ext_zvksc;
+    bool ext_zvksg;
     bool ext_zmmul;
     bool ext_zvfbfmin;
     bool ext_zvfbfwma;
diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c
index 9540d1d..1a3351b 100644
--- a/target/riscv/tcg/tcg-cpu.c
+++ b/target/riscv/tcg/tcg-cpu.c
@@ -519,6 +519,23 @@
         cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zvkt), true);
     }
 
+    if (cpu->cfg.ext_zvksc) {
+        cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zvks), true);
+        cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zvbc), true);
+    }
+
+    if (cpu->cfg.ext_zvksg) {
+        cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zvks), true);
+        cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zvkg), true);
+    }
+
+    if (cpu->cfg.ext_zvks) {
+        cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zvksed), true);
+        cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zvksh), true);
+        cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zvkb), true);
+        cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zvkt), true);
+    }
+
     if (cpu->cfg.ext_zvkt) {
         cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zvbb), true);
         cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zvbc), true);