TianoCore EDK2 master
MSR_IA32_EFER_REGISTER Union Reference

#include <MdePkg/Include/Register/Intel/ArchitecturalMsr.h>

Data Fields

struct {
   UINT32   SCE: 1
 
   UINT32   Reserved1: 7
 
   UINT32   LME: 1
 
   UINT32   Reserved2: 1
 
   UINT32   LMA: 1
 
   UINT32   NXE: 1
 
   UINT32   Reserved3: 20
 
   UINT32   Reserved4: 32
 
Bits
 
UINT32 Uint32
 
UINT64 Uint64
 

Detailed Description

MSR information returned for MSR index MSR_IA32_EFER

Definition at line 6217 of file ArchitecturalMsr.h.

Field Documentation

◆ 

struct { ... } MSR_IA32_EFER_REGISTER::Bits

Individual bit fields

◆ LMA

UINT32 MSR_IA32_EFER_REGISTER::LMA

[Bit 10] IA-32e Mode Active: IA32_EFER.LMA (R) Indicates IA-32e mode is active when set.

Definition at line 6238 of file ArchitecturalMsr.h.

◆ LME

UINT32 MSR_IA32_EFER_REGISTER::LME

[Bit 8] IA-32e Mode Enable: IA32_EFER.LME (R/W) Enables IA-32e mode operation.

Definition at line 6232 of file ArchitecturalMsr.h.

◆ NXE

UINT32 MSR_IA32_EFER_REGISTER::NXE

[Bit 11] Execute Disable Bit Enable: IA32_EFER.NXE (R/W).

Definition at line 6242 of file ArchitecturalMsr.h.

◆ Reserved1

UINT32 MSR_IA32_EFER_REGISTER::Reserved1

Definition at line 6227 of file ArchitecturalMsr.h.

◆ Reserved2

UINT32 MSR_IA32_EFER_REGISTER::Reserved2

Definition at line 6233 of file ArchitecturalMsr.h.

◆ Reserved3

UINT32 MSR_IA32_EFER_REGISTER::Reserved3

Definition at line 6243 of file ArchitecturalMsr.h.

◆ Reserved4

UINT32 MSR_IA32_EFER_REGISTER::Reserved4

Definition at line 6244 of file ArchitecturalMsr.h.

◆ SCE

UINT32 MSR_IA32_EFER_REGISTER::SCE

[Bit 0] SYSCALL Enable: IA32_EFER.SCE (R/W) Enables SYSCALL/SYSRET instructions in 64-bit mode.

Definition at line 6226 of file ArchitecturalMsr.h.

◆ Uint32

UINT32 MSR_IA32_EFER_REGISTER::Uint32

All bit fields as a 32-bit value

Definition at line 6249 of file ArchitecturalMsr.h.

◆ Uint64

UINT64 MSR_IA32_EFER_REGISTER::Uint64

All bit fields as a 64-bit value

Definition at line 6253 of file ArchitecturalMsr.h.


The documentation for this union was generated from the following file: