CBO.CLEAN

Cache Block Operation: Clean

CBO.CLEAN (rs1)

Performs a clean operation on the cache block containing the effective address.

Encoding

Binary Layout

000000000001

31:20

rs1

19:15

010000000001111

14:0

 

Format I-Type

Opcode 0x0010200F

Extension Zicbom

Operands

• rs1
  Address

Example

CBO.CLEAN (x10)

// Write back dirty data to memory.

Related

Across architectures

Cache Line Flush : how x86, ARM, RISC-V, and PowerISA each do this.

More in Zicbom

Reference

View in RISC-V Unprivileged ISA Specification ↗ RISC-V ISA Manual

Description

CBO.CLEAN performs a clean operation on a cache block containing the effective address computed from rs1. It writes back the contents of the cache block to memory if dirty, but retains the block in the cache.

Operation

CacheClean(R[rs1]);