The processor intercept mechanism of the hypervisor allows a parent partition to intercept the execution of the CPUID instruction by virtual processors within its child partitions. The parent partition can set the return values of the CPUID instruction in arbitrary ways. Doing so does not automatically alter the set of processor features of a virtual processor; that is, if a parent partition chooses to alter the behavior of the CPUID instruction, the parent partition must ensure that the set of virtual processor features matches what is indicated by the CPUID instruction.

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Build date: 11/16/2013