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    Subject[PATCH v5 02/13] riscv: cpufeature: detect RISCV_ALTERNATIVES_EARLY_BOOT earlier
    Date
    Currently riscv_cpufeature_patch_func() does nothing at the
    RISCV_ALTERNATIVES_EARLY_BOOT stage. Add a check to detect whether we
    are in this stage and exit early. This will allow us to use
    riscv_cpufeature_patch_func() for scanning of all ISA extensions.

    Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
    Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
    Reviewed-by: Heiko Stuebner <heiko@sntech.de>
    Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
    ---
    arch/riscv/kernel/cpufeature.c | 3 +++
    1 file changed, 3 insertions(+)

    diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
    index 62443fd32fa7..59e20cad1b3d 100644
    --- a/arch/riscv/kernel/cpufeature.c
    +++ b/arch/riscv/kernel/cpufeature.c
    @@ -330,6 +330,9 @@ void __init_or_module riscv_cpufeature_patch_func(struct alt_entry *begin,
    struct alt_entry *alt;
    u32 tmp;

    + if (stage == RISCV_ALTERNATIVES_EARLY_BOOT)
    + return;
    +
    for (alt = begin; alt < end; alt++) {
    if (alt->vendor_id != 0)
    continue;
    --
    2.38.1
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