ReactOS 0.4.15-dev-7931-gfd331f1
CPUID_ARCHITECTURAL_PERFORMANCE_MONITORING_EAX Union Reference

#include <Cpuid.h>

Collaboration diagram for CPUID_ARCHITECTURAL_PERFORMANCE_MONITORING_EAX:

Public Attributes

struct {
   UINT32   ArchPerfMonVerID: 8
 
   UINT32   PerformanceMonitorCounters: 8
 
   UINT32   PerformanceMonitorCounterWidth: 8
 
   UINT32   EbxBitVectorLength: 8
 
Bits
 
UINT32 Uint32
 

Detailed Description

CPUID Architectural Performance Monitoring EAX for CPUID leaf CPUID_ARCHITECTURAL_PERFORMANCE_MONITORING.

Definition at line 1653 of file Cpuid.h.

Member Data Documentation

◆ ArchPerfMonVerID

UINT32 CPUID_ARCHITECTURAL_PERFORMANCE_MONITORING_EAX::ArchPerfMonVerID

[Bit 7:0] Version ID of architectural performance monitoring.

Definition at line 1661 of file Cpuid.h.

◆ 

struct { ... } CPUID_ARCHITECTURAL_PERFORMANCE_MONITORING_EAX::Bits

Individual bit fields

◆ EbxBitVectorLength

UINT32 CPUID_ARCHITECTURAL_PERFORMANCE_MONITORING_EAX::EbxBitVectorLength

[Bits 31:24] Length of EBX bit vector to enumerate architectural performance monitoring events.

Definition at line 1685 of file Cpuid.h.

◆ PerformanceMonitorCounters

UINT32 CPUID_ARCHITECTURAL_PERFORMANCE_MONITORING_EAX::PerformanceMonitorCounters

[Bits 15:8] Number of general-purpose performance monitoring counter per logical processor.

IA32_PERFEVTSELx MSRs start at address 186H and occupy a contiguous block of MSR address space. Each performance event select register is paired with a corresponding performance counter in the 0C1H address block.

Definition at line 1671 of file Cpuid.h.

◆ PerformanceMonitorCounterWidth

UINT32 CPUID_ARCHITECTURAL_PERFORMANCE_MONITORING_EAX::PerformanceMonitorCounterWidth

[Bits 23:16] Bit width of general-purpose, performance monitoring counter.

The bit width of an IA32_PMCx MSR. This the number of valid bits for read operation. On write operations, the lower-order 32 bits of the MSR may be written with any value, and the high-order bits are sign-extended from the value of bit 31.

Definition at line 1680 of file Cpuid.h.

◆ Uint32

UINT32 CPUID_ARCHITECTURAL_PERFORMANCE_MONITORING_EAX::Uint32

All bit fields as a 32-bit value

Definition at line 1690 of file Cpuid.h.


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