1. A computer readable medium storing computer-executable instructions that, when executed, cause one or more processors to perform acts comprising: creating a primary thread from a standard thread, the created primary thread including an original user thread descriptor that resides in an upper portion of a user virtual address (VA) space of the created primary thread; and creating a duplicate user thread descriptor in a lower portion of the user VA space of the created primary thread, wherein each of the original user thread descriptor and the duplicate user thread descriptor includes a self-pointer, the self-pointers leading to an identical address in a physical memory.