Function sbi_rt::nacl_probe_feature

pub fn nacl_probe_feature(feature_id: u32) -> SbiRet

Probe a nested acceleration feature.

This is a mandatory function of the SBI nested acceleration extension.

Parameters

The feature_id parameter specifies the nested acceleration feature to probe. Possible feature IDs are defined in the table below:

Return value

This function always returns SbiRet::success() in SbiRet.error. It returns 0 in SbiRet.value if the given feature_id is not available, or 1 in SbiRet.value if it is available.

This function is defined in RISC-V SBI Specification chapter 15.5.