This content has not been validated; it was AI-generated following the x86-64 ISA Documentation generation process to maintain high quality. However, as no human has verified this data, errors may exist. If the accuracy of this data is critical, please consult the Intel SDM. The model used to generate this is gemma4:31b

XRESLDTRK

Resumes the execution of a guest by reloading the Task Register (TR) and the Guest State Area from the specified memory location.

The table after the description covers what the source and destinations can be.

DO NOT support LOCK

This instruction is only available in VMX root operation. It SHALL be used exclusively to restore the task register state during a VM entry or guest state restoration process.

The instruction REQUIRES that the memory operand is aligned to the boundaries defined by the architectural state of the Task Register. Failure to provide a valid memory reference SHALL result in a general protection fault (#GP) or a page fault (#PF) depending on the memory accessibility. If the memory operand is not properly aligned, it MAY result in alignment check exceptions if alignment checking is enabled.