Applicability of this chapter to configurations:

This chapter is applicable to all CVA6 configurations.

Note: RV32Zifencei and RV64Zifencei are identical.

RVZifencei Instruction-Fetch Fence

• FENCE.I: Fence Instruction

  Format: fence.i

  Description: The FENCE.I instruction is used to synchronize the instruction and data streams. RISC-V does not guarantee that stores to instruction memory will be made visible to instruction fetches on the same RISC-V hart until a FENCE.I instruction is executed. A FENCE.I instruction only ensures that a subsequent instruction fetch on a RISC-V hart will see any previous data stores already visible to the same RISC-V hart.

  Pseudocode: Fence(Store, Fetch)

  Invalid values: NONE

  Exception raised: NONE