[PATCH RFC v5 09/12] target/riscv: Add host cpu type

[Alistair Francis]

On Mon, Apr 12, 2021 at 4:54 PM Yifei Jiang <jiangyifei at huawei.com> wrote:
>
> 'host' type cpu is set isa to RVXLEN simply, more isa info
> will obtain from KVM in kvm_arch_init_vcpu()
>
> Signed-off-by: Yifei Jiang <jiangyifei at huawei.com>
> Signed-off-by: Yipeng Yin <yinyipeng1 at huawei.com>

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

Alistair

> ---
>  target/riscv/cpu.c | 9 +++++++++
>  target/riscv/cpu.h | 1 +
>  2 files changed, 10 insertions(+)
>
> diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
> index dd34ab4978..8132d35a92 100644
> --- a/target/riscv/cpu.c
> +++ b/target/riscv/cpu.c
> @@ -216,6 +216,12 @@ static void rv32_imafcu_nommu_cpu_init(Object *obj)
>  }
>  #endif
>
> +static void riscv_host_cpu_init(Object *obj)
> +{
> +    CPURISCVState *env = &RISCV_CPU(obj)->env;
> +    set_misa(env, RVXLEN);
> +}
> +
>  static ObjectClass *riscv_cpu_class_by_name(const char *cpu_model)
>  {
>      ObjectClass *oc;
> @@ -706,6 +712,9 @@ static const TypeInfo riscv_cpu_type_infos[] = {
>          .class_init = riscv_cpu_class_init,
>      },
>      DEFINE_CPU(TYPE_RISCV_CPU_ANY,              riscv_any_cpu_init),
> +#if defined(CONFIG_KVM)
> +    DEFINE_CPU(TYPE_RISCV_CPU_HOST,             riscv_host_cpu_init),
> +#endif
>  #if defined(TARGET_RISCV32)
>      DEFINE_CPU(TYPE_RISCV_CPU_BASE32,           rv32_base_cpu_init),
>      DEFINE_CPU(TYPE_RISCV_CPU_IBEX,             rv32_ibex_cpu_init),
> diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h
> index a489d94187..3ca3dad341 100644
> --- a/target/riscv/cpu.h
> +++ b/target/riscv/cpu.h
> @@ -43,6 +43,7 @@
>  #define TYPE_RISCV_CPU_SIFIVE_E51       RISCV_CPU_TYPE_NAME("sifive-e51")
>  #define TYPE_RISCV_CPU_SIFIVE_U34       RISCV_CPU_TYPE_NAME("sifive-u34")
>  #define TYPE_RISCV_CPU_SIFIVE_U54       RISCV_CPU_TYPE_NAME("sifive-u54")
> +#define TYPE_RISCV_CPU_HOST             RISCV_CPU_TYPE_NAME("host")
>
>  #if defined(TARGET_RISCV32)
>  # define TYPE_RISCV_CPU_BASE            TYPE_RISCV_CPU_BASE32
> --
> 2.19.1
>
>