1. In a system comprising virtualization logic and a virtual machine (VM) running Guest code, a method comprising: the virtualization logic controlling execution of the Guest code and monitoring the Guest code for a predetermined code pattern; in response to the virtualization logic detecting the predetermined code pattern in a portion of Guest code, the virtualization logic evaluating a state of at least one memory page; and the virtualization logic determining whether or not to identically execute the portion of Guest code as a function of the evaluated state of the at least one memory page.