Re: [PATCH v5 2/5] target/riscv: Add cycle & instret privilege mode filtering properties

[LIU Zhiwei]

On 2024/2/29 2:51, Atish Patra wrote:
> From: Kaiwen Xue <kaiwenx@rivosinc.com>
>
> This adds the properties for ISA extension smcntrpmf. Patches
> implementing it will follow.
>
> Signed-off-by: Atish Patra <atishp@rivosinc.com>
> Signed-off-by: Kaiwen Xue <kaiwenx@rivosinc.com>
> ---
>   target/riscv/cpu.c     | 2 ++
>   target/riscv/cpu_cfg.h | 1 +
>   2 files changed, 3 insertions(+)
>
> diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
> index 1b8d001d237f..f9d3c80597fc 100644
> --- a/target/riscv/cpu.c
> +++ b/target/riscv/cpu.c
> @@ -169,6 +169,7 @@ const RISCVIsaExtData isa_edata_arr[] = {
>       ISA_EXT_DATA_ENTRY(zhinx, PRIV_VERSION_1_12_0, ext_zhinx),
>       ISA_EXT_DATA_ENTRY(zhinxmin, PRIV_VERSION_1_12_0, ext_zhinxmin),
>       ISA_EXT_DATA_ENTRY(smaia, PRIV_VERSION_1_12_0, ext_smaia),
> +    ISA_EXT_DATA_ENTRY(smcntrpmf, PRIV_VERSION_1_12_0, ext_smcntrpmf),
>       ISA_EXT_DATA_ENTRY(smepmp, PRIV_VERSION_1_12_0, ext_smepmp),
>       ISA_EXT_DATA_ENTRY(smstateen, PRIV_VERSION_1_12_0, ext_smstateen),
>       ISA_EXT_DATA_ENTRY(ssaia, PRIV_VERSION_1_12_0, ext_ssaia),
> @@ -1447,6 +1448,7 @@ const char *riscv_get_misa_ext_description(uint32_t bit)
>   const RISCVCPUMultiExtConfig riscv_cpu_extensions[] = {
>       /* Defaults for standard extensions */
>       MULTI_EXT_CFG_BOOL("sscofpmf", ext_sscofpmf, false),
> +    MULTI_EXT_CFG_BOOL("smcntrpmf", ext_smcntrpmf, false),
>       MULTI_EXT_CFG_BOOL("zifencei", ext_zifencei, true),
>       MULTI_EXT_CFG_BOOL("zicsr", ext_zicsr, true),
>       MULTI_EXT_CFG_BOOL("zihintntl", ext_zihintntl, true),

We should not add the configure option for users before the feature has 
been implemented for bitsect reasons.

Thanks,
Zhiwei

> diff --git a/target/riscv/cpu_cfg.h b/target/riscv/cpu_cfg.h
> index 833bf5821708..0828841445c5 100644
> --- a/target/riscv/cpu_cfg.h
> +++ b/target/riscv/cpu_cfg.h
> @@ -73,6 +73,7 @@ struct RISCVCPUConfig {
>       bool ext_zihpm;
>       bool ext_smstateen;
>       bool ext_sstc;
> +    bool ext_smcntrpmf;
>       bool ext_svadu;
>       bool ext_svinval;
>       bool ext_svnapot;