I have Intel(R) Core(TM) i5-2500 CPU. RDMSR on IA32_VMX_PROCBASED_CTLS MSR gives allowed-0 settings 0x0401E172, allowed-1 settings 0xFFF9FFFE. This means bits 15 (CR3-load exiting) and 16 (CR3-store exiting) of Primary Processor-Based VM-Execution Controls must be 1. However I can set them to zero and no any invalid VM entries happen. Why?