tlbsync
Translation Lookaside Buffer Synchronize - 7C 00 00 66
tlbsync
Instruction Syntax
| Mnemonic | Format | Flags |
| tlbsync | None | None |
Instruction Encoding
0
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
1
1
0
| Field | Bits | Description |
| Primary Opcode | 0-5 | 011111 (0x1F) |
| Reserved | 6-10 | 00000 |
| Reserved | 11-15 | 00000 |
| Reserved | 16-20 | 00000 |
| Reserved | 21-29 | 000000000 |
| Reserved | 30-31 | 10 |
Operation
Wait for all TLB operations to complete
The tlbsync instruction ensures that all Translation Lookaside Buffer (TLB) operations issued before the tlbsync instruction have completed before any subsequent TLB operations are issued.
Note: The tlbsync instruction is used to synchronize TLB operations in multiprocessor systems and to ensure that TLB changes are visible to other processors.
Affected Registers
None
The tlbsync instruction does not affect any registers.
Examples
Basic TLB Synchronization
tlbsync # Wait for all TLB operations to complete
Memory Management
# After TLB invalidation operations tlbia # Invalidate all TLB entries tlbsync # Ensure TLB operations complete sync # Ensure memory operations complete
Multiprocessor Coordination
# Coordinate TLB operations between processors tlbie r3 # Invalidate specific TLB entry tlbsync # Ensure TLB invalidation is visible to other processors # Continue with next operation