slbieg

SLB Invalidate Entry Global

slbieg RS,RB

Invalidates SLB entries based on the contents of registers RS and RB.

Encoding

Binary Layout

0

RS

RB

466

 

Format X-form

Opcode 0x7C0003A4

Extension Base

Operands

• RS
  Source General Purpose Register containing the target PID (and optionally the target LPID)
• RB
  Source General Purpose Register containing the EA, class, and segment size

Example

slbieg r3, r5

Registers Altered

LR,CTR,CR,FPSCR,XER,MSR,SRR0,SRR1,TAR,SPR,DSISR,DAR,HMER

Related

More in Base

Reference

View in PowerISA v3.1C Specification ↗ OPF Power ISA v3.1C

Description

Invalidates one or more entries in the Segment Lookaside Buffer (SLB) based on the effective address class and segment size specified in RB and the process ID specified in RS, with global scope affecting all processors. This is a privileged instruction (Hypervisor-level) that requires supervisor privileges and does not affect condition register or status fields. It is used for SLB maintenance in virtual memory operations.

Operation

for each SLB entry matching (RS and RB parameters) do
  INVALIDATE_SLB_ENTRY(entry)
end for

Programming Note

slbieg does affect SLBs on other threads.