fix(henvcfg): fix read value for CSR henvcfg.

the CBIE, CBCFE, and CBZE fields of henvcfg should not depend on the values of these three fields in menvcfg.
OpenXiangShan · Nov 27, 2024 · cc8b7b9 · cc8b7b9
1 parent 4922df4
commit cc8b7b9
Showing 1 changed file with 0 additions and 1 deletion.
diff --git a/src/isa/riscv64/system/priv.c b/src/isa/riscv64/system/priv.c
@@ -1383,7 +1383,6 @@ static word_t csr_read(uint32_t csrid) {
     case CSR_HENVCFG:
     {
       uint64_t henvcfg_out = henvcfg->val;
-      henvcfg_out &= menvcfg->val & MENVCFG_WMASK;
       /* henvcfg.stce/dte/pbmte is read_only 0 when menvcfg.stce/dte/pbmte = 0 */
       henvcfg_out &= menvcfg->val | ~(MENVCFG_RMASK_STCE | MENVCFG_RMASK_DTE | MENVCFG_RMASK_PBMTE);
       return henvcfg_out & HENVCFG_WMASK;