MSR_IA32_APIC_BASE_REGISTER Union Reference

Data Fields
struct {
UINT32   Reserved1:8
UINT32   BSP:1
UINT32   Reserved2:1
UINT32   EXTD:1
UINT32   EN:1
UINT32   ApicBase:20
UINT32   ApicBaseHi:32
}	Bits
UINT64	Uint64

Detailed Description

MSR information returned for MSR index MSR_IA32_APIC_BASE

Field Documentation

UINT32 MSR_IA32_APIC_BASE_REGISTER::ApicBase

[Bits 31:12] APIC Base (R/W).

UINT32 MSR_IA32_APIC_BASE_REGISTER::ApicBaseHi

[Bits 63:32] APIC Base (R/W).

struct { ... } MSR_IA32_APIC_BASE_REGISTER::Bits

Individual bit fields

UINT32 MSR_IA32_APIC_BASE_REGISTER::BSP

[Bit 8] BSP flag (R/W).

UINT32 MSR_IA32_APIC_BASE_REGISTER::EN

[Bit 11] APIC Global Enable (R/W).

UINT32 MSR_IA32_APIC_BASE_REGISTER::EXTD

[Bit 10] Enable x2APIC mode. Introduced at Display Family / Display Model 06_1AH.

UINT32 MSR_IA32_APIC_BASE_REGISTER::Reserved1

UINT32 MSR_IA32_APIC_BASE_REGISTER::Reserved2

UINT64 MSR_IA32_APIC_BASE_REGISTER::Uint64

All bit fields as a 64-bit value