ProcessorState
Restore(SSMDump);
Opcode |
Instruction |
Description |
|---|---|---|
|
0F AA |
RSM |
Resume operation of interrupted program |
Returns program control from system management mode (SMM) to the application program or operating-system procedure that was interrupted when the processor received an SSM interrupt. The processor's state is restored from the dump created upon entering SMM. If the processor detects invalid state information during state restoration, it enters the shutdown state. The following invalid information can cause a shutdown:
Any reserved bit of CR4 is set to 1.
Any illegal combination
of bits in CR0, such as (PG=1 and PE=0) or (NW=1 and CD=0). (Intel(R)
Pentium(R) and Intel486
The value stored in the state dump base field is not a 32-KByte aligned address.
The contents of the model-specific registers are not affected by a return from SMM.
See Chapter 11, System Management Mode (SMM), in the IA-32 Intel(R) Architecture Software Developer's Manual, Volume 3, for more information about SMM and the behavior of the RSM instruction.
ReturnFromSSM;
ProcessorState Restore(SSMDump);
All.
#UD - If an attempt is made to execute this instruction when the processor is not in SMM.
#UD - If an attempt is made to execute this instruction when the processor is not in SMM.
#UD - If an attempt is made to execute this instruction when the processor is not in SMM.
For details, see Volume 2A and Volume 2B of the Intel(R) 64 and IA-32 Intel Architecture Software Developer's Manual. For the latest updates on the instruction set information, go to the web site.