0F 01/7         INVLPG m         Invalidate TLB Entry for page that contains m


Description

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


Flags

None.

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