From: Weiwei Li <liweiwei@iscas.ac.cn>
Date: Wed, 24 May 2023 01:59:33 +0000 (+0800)
Subject: target/riscv: Update cur_pmmask/base when xl changes
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=30a0d77622d105908e7d45cf34c73f781263ede5;p=qemu.git

target/riscv: Update cur_pmmask/base when xl changes

write_mstatus() can only change current xl when in debug mode.
And we need update cur_pmmask/base in this case.

Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
Reviewed-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Message-Id: <20230524015933.17349-3-liweiwei@iscas.ac.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---

diff --git a/target/riscv/csr.c b/target/riscv/csr.c
index cf7da4f87f..ad73691878 100644
--- a/target/riscv/csr.c
+++ b/target/riscv/csr.c
@@ -1324,8 +1324,15 @@ static RISCVException write_mstatus(CPURISCVState *env, int csrno,
         mstatus = set_field(mstatus, MSTATUS64_SXL, xl);
     }
     env->mstatus = mstatus;
-    env->xl = cpu_recompute_xl(env);
 
+    /*
+     * Except in debug mode, UXL/SXL can only be modified by higher
+     * privilege mode. So xl will not be changed in normal mode.
+     */
+    if (env->debugger) {
+        env->xl = cpu_recompute_xl(env);
+        riscv_cpu_update_mask(env);
+    }
     return RISCV_EXCP_NONE;
 }