| Code | Mnemonic | Description |
|---|---|---|
| 0F 01/7 | INVLPG m | Invalidate TLB Entry for page that contains m |
Invalidates (flushes) the translation lookaside buffer (TLB) entry specified with the source operand. The source operand is a memory address. The processor determines the page that contains that address and flushes the TLB entry for that page.
The INVLPG instruction is a privileged instruction. When the processor is running in protected mode, the CPL of a program or procedure must be 0 to execute this instruction.
The INVLPG instruction normally flushes the TLB entry only for the specified page; however, in some cases, it flushes the entire TLB. See "MOV — Move to/from Control Registers" in this chapter for further information on operations that flush the TLB.
| Operands | Bytes | Clocks | |
|---|---|---|---|
| mem32 | 5 | 25 | NP |
| ID | unaffected | DF | unaffected |
|---|---|---|---|
| VIP | unaffected | IF | unaffected |
| VIF | unaffected | TF | unaffected |
| AC | unaffected | SF | unaffected |
| VM | unaffected | ZF | unaffected |
| RF | unaffected | AF | unaffected |
| NT | unaffected | PF | unaffected |
| IOPL | unaffected | CF | unaffected |
| OF | unaffected |