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RSM

Resumes operation from a Save State area, restoring the processor state from the memory location pointed to by the RSM state area and returning the processor to the previous execution environment.

The table below covers what the source and destinations can be.

DO NOT support LOCK

The instruction SHALL only be executed in 64-bit mode. It is used exclusively in conjunction with the SENTER and GETSEC instructions within the Trusted Execution Technology (TXT) framework. If the processor is not in a state where resuming from a save area is valid, or if the SMM (System Management Mode) is not configured to support this transition, the instruction MAY trigger a general protection fault (#GP).

To avoid unexpected system resets or #GP faults, the software MUST ensure that the Save State area is properly aligned and that the GETSEC[RSM] leaf has been previously validated. Failure to provide a valid state area structure as defined by the Intel TXT specification WILL result in an invalid state transition.