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# Intel Processor Info
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```
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Processors: (two xeon cpus)
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Processor Intel(R) Xeon(R) CPU X5650 @ 2.67GHz, 2668 Mhz, 6 Core(s), 12 Logical Processor(s)
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Processor Intel(R) Xeon(R) CPU X5650 @ 2.67GHz, 2668 Mhz, 6 Core(s), 12 Logical Processor(s)
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```
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# VMCS - Guest Fields
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#### 26.3.1.1 Checks on Guest Control Registers, Debug Registers, and MSRs
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##### Checks on Guest Control Registers
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* The CR0 field must not set any bit to a value not supported in VMX operation (see Section 23.8). The following
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are exceptions:
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- Bit 0 (corresponding to CR0.PE) and bit 31 (PG) are not checked if the “unrestricted guest” VM-execution
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control is 1.
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- Bit 29 (corresponding to CR0.NW) and bit 30 (CD) are never checked because the values of these bits are
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not changed by VM entry; see Section 26.3.2.1.
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* The following checks are performed on processors that support Intel 64 architecture:
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- If the “IA-32e mode guest” VM-entry control is 1, bit 31 in the CR0 field (corresponding to CR0.PG) and
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bit 5 in the CR4 field (corresponding to CR4.PAE) must each be 1. :white_check_mark:
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- If the “IA-32e mode guest” VM-entry control is 0, bit 17 in the CR4 field (corresponding to CR4.PCIDE)
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must be 0.
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- The CR3 field must be such that bits 63:52 and bits in the range 51:32 beyond the processor’s physicaladdress
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width are 0. :white_check_mark:
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* The CR4 field must not set any bit to a value not supported in VMX operation (see Section 23.8). :white_check_mark:
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```
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guest cr0: 0x0000000080050033 0b1000 0000 0000 0101 0000 0000 0011 0011
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guest cr3: 0x00000000001AD000
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guest cr4: 0x00000000000026F8 0b0010 0110 1111 1000
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```
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##### Checks on Guest MSRs
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* If the “load debug controls” VM-entry control is 1, bits reserved in the IA32_DEBUGCTL MSR must be 0 in the
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field for that register. The first processors to support the virtual-machine extensions supported only the 1-
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setting of this control and thus performed this check unconditionally.
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#### 26.3.1.2 Checks on Guest Segment Registers |
