CBO.FLUSH

Cache Block Operation: Flush

CBO.FLUSH (rs1)

Performs a flush (clean + invalidate) operation on the cache block.

Encoding

Binary Layout

000000000010

31:20

rs1

19:15

010000000001111

14:0

 

Format I-Type

Opcode 0x0020200F

Extension Zicbom

Operands

• rs1
  Address

Example

CBO.FLUSH (x10)

// Write back and invalidate.

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.FLUSH cleans and then invalidates the cache block containing the effective address. The block's contents are written back to memory if dirty, then the block is evicted from the cache.

Operation

CacheFlush(R[rs1]);