This repo holds the work area and revisions of the non-ISA specification created by the RISC-V AP-TEE TG. This specification defines the programming interfaces (ABI) to support the Confidential VM Extension (CoVE) confidential computing architecture for RISC-V application-processor platforms.
The SUPD active domain enumeration function describes which supervisor domains are active. But active domains may or may not support CoVE and there is no way for SW to get that information, aside from poking at extensions specific functions like e.g. sbi_covh_get_tsm_info or CoVE.
The SUPD active domain enumeration function describes which supervisor domains are active. But active domains may or may not support
CoVEand there is no way for SW to get that information, aside from poking at extensions specific functions like e.g.sbi_covh_get_tsm_infoorCoVE.Would it make sense to add a
sbi_spud_supported_extensions()function to let a supervisor domain manager describe which supervisor domain ID addressable (as defined in https://github.com/riscv-non-isa/riscv-ap-tee/blob/main/src/sbi_cove.adoc#function-enumerate-active-supervisor-domains-fid-0) SBI extensions it supports? It would return a 64-bit value with all supported extensions, andCoVEcould reserve bit 0.