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    Subject[PATCH v3 15/20] riscv: add ISA extension parsing for Zvfh[min]
    Date
    Add parsing for Zvfh[min] ISA extension[1] which were ratified in
    june 2023 around commit e2ccd0548d6c ("Remove draft warnings from
    Zvfh[min]") in riscv-v-spec[2].

    Link: https://drive.google.com/file/d/1_Yt60HGAf1r1hx7JnsIptw0sqkBd9BQ8/view [1]
    Link: https://github.com/riscv/riscv-v-spec/commits/e2ccd0548d6c [2]
    Signed-off-by: Clément Léger <cleger@rivosinc.com>
    Reviewed-by: Evan Green <evan@rivosinc.com>
    ---
    arch/riscv/include/asm/hwcap.h | 2 ++
    arch/riscv/kernel/cpufeature.c | 2 ++
    2 files changed, 4 insertions(+)

    diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h
    index 5b57b24db60c..752be910e7c3 100644
    --- a/arch/riscv/include/asm/hwcap.h
    +++ b/arch/riscv/include/asm/hwcap.h
    @@ -84,6 +84,8 @@
    #define RISCV_ISA_EXT_ZFH 66
    #define RISCV_ISA_EXT_ZFHMIN 67
    #define RISCV_ISA_EXT_ZIHINTNTL 68
    +#define RISCV_ISA_EXT_ZVFH 69
    +#define RISCV_ISA_EXT_ZVFHMIN 70

    #define RISCV_ISA_EXT_MAX 128
    #define RISCV_ISA_EXT_INVALID U32_MAX
    diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
    index baa8edfb0e6a..0b9d16ea71f1 100644
    --- a/arch/riscv/kernel/cpufeature.c
    +++ b/arch/riscv/kernel/cpufeature.c
    @@ -282,6 +282,8 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = {
    __RISCV_ISA_EXT_DATA(zksh, RISCV_ISA_EXT_ZKSH),
    __RISCV_ISA_EXT_SUPERSET(zvbb, RISCV_ISA_EXT_ZVBB, riscv_zvbb_exts),
    __RISCV_ISA_EXT_DATA(zvbc, RISCV_ISA_EXT_ZVBC),
    + __RISCV_ISA_EXT_DATA(zvfh, RISCV_ISA_EXT_ZVFH),
    + __RISCV_ISA_EXT_DATA(zvfhmin, RISCV_ISA_EXT_ZVFHMIN),
    __RISCV_ISA_EXT_DATA(zvkb, RISCV_ISA_EXT_ZVKB),
    __RISCV_ISA_EXT_DATA(zvkg, RISCV_ISA_EXT_ZVKG),
    __RISCV_ISA_EXT_BUNDLE(zvkn, riscv_zvkn_bundled_exts),
    --
    2.42.0
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      Last update: 2023-11-20 13:51    [W:3.690 / U:0.008 seconds]
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