Module nacl

Chapter 15. Nested Acceleration Extension (EID #0x4E41434C “NACL”).

Modules

• feature_id
  Nested Acceleration Feature ID.
• shmem_size
  Size of shared memory set by supervisor software for current hart.

Constants

• EID_NACL
  Extension ID for Nested Acceleration Extension.
• PROBE_FEATURE
  Function ID to probe a nested acceleration feature.
• SET_SHMEM
  Function ID to set and enable the shared memory for nested acceleration on the calling hart.
• SYNC_CSR
  Function ID to synchronize CSRs in the nested acceleration shared memory.
• SYNC_HFENCE
  Function ID to synchronize HFENCEs in the nested acceleration shared memory.
• SYNC_SRET
  Function ID to synchronize CSRs and HFENCEs in the nested acceleration shared memory and emulate the SRET instruction.