Method and apparatus to provide secure application execution

A system comprising:

• a memory to store an instruction;
• and
• a processor, the processor including:
• decode logic circuitry to decode the instruction, the instruction including an opcode to indicate a page is to be removed from an enclave page cache (EPC), and
• execution logic circuitry to execute the decoded instruction to remove the page from the EPC and set a zero flag in a flags register to zero when the page is removed, wherein the instruction is to run in a protected mode.