From 929e4277c128772bad41cc795995f754cb9991af Mon Sep 17 00:00:00 2001
From: TANG Tiancheng <tangtiancheng.ttc@alibaba-inc.com>
Date: Thu, 19 Sep 2024 13:50:43 +0800
Subject: [PATCH] target/riscv: Correct SXL return value for RV32 in RV64 QEMU

Ensure that riscv_cpu_sxl returns MXL_RV32 when runningRV32 in an
RV64 QEMU.

Signed-off-by: TANG Tiancheng <tangtiancheng.ttc@alibaba-inc.com>
Fixes: 05e6ca5e156 ("target/riscv: Ignore reserved bits in PTE for RV64")
Reviewed-by: Liu Zhiwei <zhiwei_liu@linux.alibaba.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20240919055048.562-4-zhiwei_liu@linux.alibaba.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---
 target/riscv/cpu.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h
index 1619c3acb6..a63a29744c 100644
--- a/target/riscv/cpu.h
+++ b/target/riscv/cpu.h
@@ -709,8 +709,11 @@ static inline RISCVMXL riscv_cpu_sxl(CPURISCVState *env)
 #ifdef CONFIG_USER_ONLY
     return env->misa_mxl;
 #else
-    return get_field(env->mstatus, MSTATUS64_SXL);
+    if (env->misa_mxl != MXL_RV32) {
+        return get_field(env->mstatus, MSTATUS64_SXL);
+    }
 #endif
+    return MXL_RV32;
 }
 #endif