Re: [PATCH v5 6/6] target/riscv: Check svukte is not enabled in RV32

[Alistair Francis]

On Tue, Dec 3, 2024 at 12:39 PM Fea.Wang <fea.wang@sifive.com> wrote:
>
> The spec explicitly says svukte doesn't support RV32. So check that it
> is not enabled in RV32.
>
> Signed-off-by: Fea.Wang <fea.wang@sifive.com>

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>

Alistair

> ---
>  target/riscv/tcg/tcg-cpu.c | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c
> index c62c221696..3b99c8c9e3 100644
> --- a/target/riscv/tcg/tcg-cpu.c
> +++ b/target/riscv/tcg/tcg-cpu.c
> @@ -652,6 +652,11 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, 
> Error **errp)
>          return;
>      }
>
> +    if (mcc->misa_mxl_max == MXL_RV32 && cpu->cfg.ext_svukte) {
> +        error_setg(errp, "svukte is not supported for RV32");
> +        return;
> +    }
> +
>      /*
>       * Disable isa extensions based on priv spec after we
>       * validated and set everything we need.
> --
> 2.34.1
>
>