Function sbi_rt::probe_extension

pub fn probe_extension<E>(extension: E) -> ExtensionInfo
where
    E: Extension,

Probe information about one SBI extension from the current environment.

Returns 0 if given SBI extension_id is not available, or typically 1 if it’s available. Implementation would define further non-zero return values for information about this extension if it is available.

This function is defined in RISC-V SBI Specification chapter 4.4. According to the introduction of chapter 4, all base extension functions must success and return no error code.