MSR_IA32_DEBUG_INTERFACE_REGISTER Union Reference

Data Fields
struct {
UINT32   Enable:1
UINT32   Reserved1:29
UINT32   Lock:1
UINT32   DebugOccurred:1
UINT32   Reserved2:32
}	Bits
UINT32	Uint32
UINT64	Uint64

Detailed Description

MSR information returned for MSR index MSR_IA32_DEBUG_INTERFACE

Field Documentation

struct { ... } MSR_IA32_DEBUG_INTERFACE_REGISTER::Bits

Individual bit fields

UINT32 MSR_IA32_DEBUG_INTERFACE_REGISTER::DebugOccurred

[Bit 31] Debug Occurred (R/O): This "sticky bit" is set by hardware to indicate the status of bit 0. Default is 0. If CPUID.01H:ECX.[11] = 1.

UINT32 MSR_IA32_DEBUG_INTERFACE_REGISTER::Enable

[Bit 0] Enable (R/W) BIOS set 1 to enable Silicon debug features. Default is 0. If CPUID.01H:ECX.[11] = 1.

UINT32 MSR_IA32_DEBUG_INTERFACE_REGISTER::Lock

[Bit 30] Lock (R/W): If 1, locks any further change to the MSR. The lock bit is set automatically on the first SMI assertion even if not explicitly set by BIOS. Default is 0. If CPUID.01H:ECX.[11] = 1.

UINT32 MSR_IA32_DEBUG_INTERFACE_REGISTER::Reserved1

UINT32 MSR_IA32_DEBUG_INTERFACE_REGISTER::Reserved2

UINT32 MSR_IA32_DEBUG_INTERFACE_REGISTER::Uint32

All bit fields as a 32-bit value

UINT64 MSR_IA32_DEBUG_INTERFACE_REGISTER::Uint64

All bit fields as a 64-bit value