From: Fea.Wang <fea.wang@sifive.com>
Date: Tue, 3 Dec 2024 03:49:32 +0000 (+0800)
Subject: target/riscv: Check svukte is not enabled in RV32
X-Git-Tag: v10.0.0-rc0~110^2~5
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=19d476ff13afbad04c52efb2dff0362839ae510a;p=thirdparty%2Fqemu.git

target/riscv: Check svukte is not enabled in RV32

The spec explicitly says svukte doesn't support RV32. So check that it
is not enabled in RV32.

Signed-off-by: Fea.Wang <fea.wang@sifive.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20241203034932.25185-7-fea.wang@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---

diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c
index c62c2216961..3b99c8c9e3f 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 for RV32");
+        return;
+    }
+
     /*
      * Disable isa extensions based on priv spec after we
      * validated and set everything we need.