SERIALIZE
Serialize Instruction Execution
| Opcode/Instruction | Op/En | 64/32 bit Mode Support | CPUID Feature Flag | Description |
|---|---|---|---|---|
| NP 0F 01 E8 SERIALIZE | ZO | V/V | SERIALIZE | Serialize instruction fetch and execution. |
Instruction Operand Encoding
| Op/En | Tuple | Operand 1 | Operand 2 | Operand 3 | Operand 4 |
|---|---|---|---|---|---|
| ZO | N/A | N/A | N/A | N/A | N/A |
Description
Serializes instruction execution. Before the next instruction is fetched and executed, the SERIALIZE instruction ensures that all modifications to flags, registers, and memory by previous instructions are completed, draining all buffered writes to memory. This instruction is also a serializing instruction as defined in the section “Serializing Instructions” in Chapter 9 of the Intel® 64 and IA-32 Architectures Software Developer’s Manual, Volume 3A.
SERIALIZE does not modify registers, arithmetic flags, or memory.
Operation
Wait_On_Fetch_And_Execution_Of_Next_Instruction_Until(preceding_instructions_complete_and_preceding_stores_globally_visible);
Intel C/C++ Compiler Intrinsic Equivalent
SERIALIZE void _serialize(void);
SIMD Floating-Point Exceptions
None.
Other Exceptions
| #UD | If the LOCK prefix is used. |
|---|---|
| If CPUID.07H.0H:EDX.SERIALIZE[bit 14] = 0. |
This UNOFFICIAL, mechanically-separated, non-verified reference is provided for convenience, but it may be incomplete or broken in various obvious or non-obvious ways. Refer to Intel® 64 and IA-32 Architectures Software Developer’s Manual for anything serious.