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35-298 Vol. 3C

MODEL-SPECIFIC REGISTERS (MSRS)

40FH

1039 IA32_MC3_MISC

0, 1, 2, 3, 

4, 6

Shared

See Section 15.3.2.4, “IA32_MCi_MISC MSRs.”
The IA32_MC3_MISC MSR is either not 

implemented or does not contain additional 

information if the MISCV flag in the 

IA32_MC3_STATUS register is clear. 
When not implemented in the processor, all reads 

and writes to this MSR will cause a general-

protection exception.

410H

1040 IA32_MC4_CTL

0, 1, 2, 3, 

4, 6

Shared

See Section 15.3.2.1, “IA32_MCi_CTL MSRs.”

411H

1041 IA32_MC4_STATUS

0, 1, 2, 3, 

4, 6

Shared

See Section 15.3.2.2, “IA32_MCi_STATUS MSRS.”

412H

1042 IA32_MC4_ADDR

See Section 15.3.2.3, “IA32_MCi_ADDR MSRs.”
The IA32_MC2_ADDR register is either not 

implemented or contains no address if the ADDRV 

flag in the IA32_MC4_STATUS register is clear. 
When not implemented in the processor, all reads 

and writes to this MSR will cause a general-

protection exception.

413H

1043 IA32_MC4_MISC

See Section 15.3.2.4, “IA32_MCi_MISC MSRs.” 
The IA32_MC2_MISC MSR is either not 

implemented or does not contain additional 

information if the MISCV flag in the 

IA32_MC4_STATUS register is clear. 
When not implemented in the processor, all reads 

and writes to this MSR will cause a general-

protection exception.

480H 1152

IA32_VMX_BASIC

3, 4, 6

Unique

Reporting Register of Basic VMX Capabilities 

(R/O)
See Table 35-2.
See Appendix A.1, “Basic VMX Information.”

481H 1153

IA32_VMX_PINBASED_CTLS

3, 4, 6

Unique

Capability Reporting Register of Pin-based 

VM-execution Controls (R/O)
See Table 35-2.
See Appendix A.3, “VM-Execution Controls.”

482H 1154

IA32_VMX_PROCBASED_CTLS

3, 4, 6

Unique

Capability Reporting Register of Primary 

Processor-based VM-execution Controls (R/O)
See Appendix A.3, “VM-Execution Controls,” and 

see Table 35-2.

483H 1155

IA32_VMX_EXIT_CTLS

3, 4, 6

Unique

Capability Reporting Register of VM-exit 

Controls (R/O)
See Appendix A.4, “VM-Exit Controls,” and see 

Table 35-2.

Table 35-41.  MSRs in the Pentium® 4 and Intel® Xeon® Processors  (Contd.)

Register 

Address

Register Name

Fields and Flags

Model 

Avail-

ability

Shared/

Unique

1

Bit Description

 Hex

Dec