On Mon, Dec 5, 2022 at 4:54 PM Bin Meng <bm...@tinylab.org> wrote: > > The priv spec v1.12 says: > > If no PMP entry matches an M-mode access, the access succeeds. If > no PMP entry matches an S-mode or U-mode access, but at least one > PMP entry is implemented, the access fails. Failed accesses generate > an instruction, load, or store access-fault exception. > > At present the exception cause is set to 'illegal instruction' but > should have been 'instruction access fault'. > > Fixes: d102f19a2085 ("target/riscv/pmp: Raise exception if no PMP entry is > configured") > Signed-off-by: Bin Meng <bm...@tinylab.org>
Reviewed-by: Alistair Francis <alistair.fran...@wdc.com> Alistair > --- > > target/riscv/op_helper.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/target/riscv/op_helper.c b/target/riscv/op_helper.c > index 09f1f5185d..d7af7f056b 100644 > --- a/target/riscv/op_helper.c > +++ b/target/riscv/op_helper.c > @@ -202,7 +202,7 @@ target_ulong helper_mret(CPURISCVState *env) > > if (riscv_feature(env, RISCV_FEATURE_PMP) && > !pmp_get_num_rules(env) && (prev_priv != PRV_M)) { > - riscv_raise_exception(env, RISCV_EXCP_ILLEGAL_INST, GETPC()); > + riscv_raise_exception(env, RISCV_EXCP_INST_ACCESS_FAULT, GETPC()); > } > > target_ulong prev_virt = get_field(env->mstatus, MSTATUS_MPV); > -- > 2.34.1 > >