MSR_IA32_SMM_MONITOR_CTL_REGISTER Union Reference

Data Fields
struct {
UINT32   Valid:1
UINT32   Reserved1:1
UINT32   BlockSmi:1
UINT32   Reserved2:9
UINT32   MsegBase:20
UINT32   Reserved3:32
}	Bits
UINT32	Uint32
UINT64	Uint64

Detailed Description

MSR information returned for MSR index MSR_IA32_SMM_MONITOR_CTL

Field Documentation

struct { ... } MSR_IA32_SMM_MONITOR_CTL_REGISTER::Bits

Individual bit fields

UINT32 MSR_IA32_SMM_MONITOR_CTL_REGISTER::BlockSmi

[Bit 2] Controls SMI unblocking by VMXOFF (see Section 34.14.4). If IA32_VMX_MISC[28].

UINT32 MSR_IA32_SMM_MONITOR_CTL_REGISTER::MsegBase

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

UINT32 MSR_IA32_SMM_MONITOR_CTL_REGISTER::Reserved1

UINT32 MSR_IA32_SMM_MONITOR_CTL_REGISTER::Reserved2

UINT32 MSR_IA32_SMM_MONITOR_CTL_REGISTER::Reserved3

UINT32 MSR_IA32_SMM_MONITOR_CTL_REGISTER::Uint32

All bit fields as a 32-bit value

UINT64 MSR_IA32_SMM_MONITOR_CTL_REGISTER::Uint64

All bit fields as a 64-bit value

UINT32 MSR_IA32_SMM_MONITOR_CTL_REGISTER::Valid

[Bit 0] Valid (R/W). The STM may be invoked using VMCALL only if this bit is 1. Because VMCALL is used to activate the dual-monitor treatment (see Section 34.15.6), the dual-monitor treatment cannot be activated if the bit is 0. This bit is cleared when the logical processor is reset.