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[PATCH v7 2/2] target/riscv: Update cur_pmmask/base when xl changes
From: |
Weiwei Li |
Subject: |
[PATCH v7 2/2] target/riscv: Update cur_pmmask/base when xl changes |
Date: |
Wed, 24 May 2023 09:59:33 +0800 |
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>
---
target/riscv/csr.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
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;
}
--
2.25.1