Re: [PATCH 01/14] target/riscv: Add cfg property for Zvkt extension

[Alistair Francis]

On Thu, Oct 26, 2023 at 1:15 AM Max Chou <max.chou@sifive.com> wrote:
>
> Vector crypto spec defines the Zvkt extension that included all of the
> instructions of Zvbb & Zvbc extensions and some vector instructions.
>
> Signed-off-by: Max Chou <max.chou@sifive.com>

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

Alistair

> ---
>  target/riscv/cpu_cfg.h     | 1 +
>  target/riscv/tcg/tcg-cpu.c | 5 +++++
>  2 files changed, 6 insertions(+)
>
> diff --git a/target/riscv/cpu_cfg.h b/target/riscv/cpu_cfg.h
> index e7ce977189c..d8d17dedeed 100644
> --- a/target/riscv/cpu_cfg.h
> +++ b/target/riscv/cpu_cfg.h
> @@ -94,6 +94,7 @@ struct RISCVCPUConfig {
>      bool ext_zvknhb;
>      bool ext_zvksed;
>      bool ext_zvksh;
> +    bool ext_zvkt;
>      bool ext_zmmul;
>      bool ext_zvfbfmin;
>      bool ext_zvfbfwma;
> diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c
> index c5ff03efce9..b9eaecb699c 100644
> --- a/target/riscv/tcg/tcg-cpu.c
> +++ b/target/riscv/tcg/tcg-cpu.c
> @@ -499,6 +499,11 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, 
> Error **errp)
>          return;
>      }
>
> +    if (cpu->cfg.ext_zvkt) {
> +        cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zvbb), true);
> +        cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zvbc), true);
> +    }
> +
>      /*
>       * In principle Zve*x would also suffice here, were they supported
>       * in qemu
> --
> 2.34.1
>
>