[PATCH v4 6/6] target/riscv: Check svukte is not enabled in RV32

[Fea.Wang]

Based on the spec, svukte depends on SV39, so it should not be enabled
in RV32.

Signed-off-by: Fea.Wang <fea.wang@sifive.com>
---
 target/riscv/tcg/tcg-cpu.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c
index c62c221696..4273f1f472 100644
--- a/target/riscv/tcg/tcg-cpu.c
+++ b/target/riscv/tcg/tcg-cpu.c
@@ -652,6 +652,11 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, 
Error **errp)
         return;
     }
 
+    if (mcc->misa_mxl_max == MXL_RV32 && cpu->cfg.ext_svukte) {
+        error_setg(errp, "svukte is not supported by to RV32");
+        return;
+    }
+
     /*
      * Disable isa extensions based on priv spec after we
      * validated and set everything we need.
-- 
2.34.1