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[PATCH v2 17/18] target/riscv: Drop priv level check in mseccfg predicat

From: Bin Meng
Subject: [PATCH v2 17/18] target/riscv: Drop priv level check in mseccfg predicate()
Date: Tue, 28 Feb 2023 21:45:34 +0800

From: Bin Meng <bmeng@tinylab.org>

riscv_csrrw_check() already does the generic privilege level check
hence there is no need to do the specific M-mode access check in
the mseccfg predicate().

With this change debugger can access the mseccfg CSR anytime.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
Reviewed-by: Weiwei Li <liweiwei@iscas.ac.cn>

(no changes since v1)

 target/riscv/csr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/riscv/csr.c b/target/riscv/csr.c
index 020c3f524f..785f6f4d45 100644
--- a/target/riscv/csr.c
+++ b/target/riscv/csr.c
@@ -451,7 +451,7 @@ static RISCVException pmp(CPURISCVState *env, int csrno)
 static RISCVException epmp(CPURISCVState *env, int csrno)
-    if (env->priv == PRV_M && riscv_cpu_cfg(env)->epmp) {
+    if (riscv_cpu_cfg(env)->epmp) {
         return RISCV_EXCP_NONE;

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