Documenting system information classes and their uses
| Information Class | NtSetSystemInformation | NtQuerySystemInformation | NtQuerySystemInformationEx |
|---|---|---|---|
| SystemBasicInformation | Invalid | Valid | Invalid |
| SystemProcessorInformation | Invalid | Valid | Invalid |
| SystemPerformanceInformation | Invalid | Valid | Invalid |
| SystemTimeOfDayInformation | Invalid | Valid | Invalid |
| SystemPathInformation | Invalid | Not implemented | Invalid |
| SystemProcessInformation | Invalid | Valid | Invalid |
| SystemCallCountInformation | Invalid | Valid | Invalid |
| SystemDeviceInformation | Invalid | Valid | Invalid |
| SystemProcessorPerformanceInformation | Invalid | Valid | Valid |
| SystemFlagsInformation | Valid | Valid | Invalid |
| SystemCallTimeInformation | Invalid | Not implemented | Invalid |
| SystemModuleInformation | Invalid | Valid | Invalid |
| SystemLocksInformation | Invalid | Valid | Invalid |
| SystemStackTraceInformation | Invalid | Valid | Invalid |
| SystemPagedPoolInformation | Invalid | Not implemented | Invalid |
| SystemNonPagedPoolInformation | Invalid | Not implemented | Invalid |
| SystemHandleInformation | Invalid | Valid | Invalid |
| SystemObjectInformation | Invalid | Valid | Invalid |
| SystemPageFileInformation | Invalid | Valid | Invalid |
| SystemVdmInstemulInformation | Invalid | Not implemented | Invalid |
| SystemVdmBopInformation | Invalid | Invalid | Invalid |
| SystemFileCacheInformation | Valid | Valid | Invalid |
| SystemPoolTagInformation | Invalid | Valid | Invalid |
| SystemInterruptInformation | Invalid | Valid | Valid |
| SystemDpcBehaviorInformation | Valid | Valid | Invalid |
| SystemFullMemoryInformation | Invalid | Not implemented | Invalid |
| SystemLoadGdiDriverInformation | Valid | Invalid | Invalid |
| SystemUnloadGdiDriverInformation | Valid | Invalid | Invalid |
| SystemTimeAdjustmentInformation | Valid | Valid | Invalid |
| SystemSummaryMemoryInformation | Invalid | Not implemented | Invalid |
| SystemMirrorMemoryInformation | Valid | Invalid | Invalid |
| SystemPerformanceTraceInformation | Not implemented | Not implemented | Invalid |
| SystemObsolete0 | Invalid | Invalid | Invalid |
| SystemExceptionInformation | Invalid | Valid | Invalid |
| SystemCrashDumpStateInformation | Valid | Invalid | Invalid |
| SystemKernelDebuggerInformation | Invalid | Valid | Invalid |
| SystemContextSwitchInformation | Invalid | Valid | Invalid |
| SystemRegistryQuotaInformation | Valid | Valid | Invalid |
| SystemExtendServiceTableInformation | Valid | Invalid | Invalid |
| SystemPrioritySeperation | Valid | Invalid | Invalid |
| SystemVerifierAddDriverInformation | Valid | Invalid | Invalid |
| SystemVerifierRemoveDriverInformation | Valid | Invalid | Invalid |
| SystemProcessorIdleInformation | Invalid | Valid | Valid |
| SystemLegacyDriverInformation | Invalid | Valid | Invalid |
| SystemCurrentTimeZoneInformation | Invalid | Valid | Invalid |
| SystemLookasideInformation | Invalid | Valid | Invalid |
| SystemTimeSlipNotification | Valid | Invalid | Invalid |
| SystemSessionCreate | Not implemented | Invalid | Invalid |
| SystemSessionDetach | Not implemented | Invalid | Invalid |
| SystemSessionInformation | Invalid | Invalid | Invalid |
| SystemRangeStartInformation | Invalid | Valid | Invalid |
| SystemVerifierInformation | Valid | Valid | Invalid |
| SystemVerifierThunkExtend | Valid | Invalid | Invalid |
| SystemSessionProcessInformation | Invalid | Valid | Invalid |
| SystemLoadGdiDriverInSystemSpace | Valid | Invalid | Invalid |
| SystemNumaProcessorMap | Invalid | Valid | Invalid |
| SystemPrefetcherInformation | Valid | Valid | Invalid |
| SystemExtendedProcessInformation | Invalid | Valid | Invalid |
| SystemRecommendedSharedDataAlignment | Invalid | Valid | Invalid |
| SystemComPlusPackage | Valid | Valid | Invalid |
| SystemNumaAvailableMemory | Invalid | Valid | Invalid |
| SystemProcessorPowerInformation | Invalid | Valid | Valid |
| SystemEmulationBasicInformation | Invalid | Valid | Invalid |
| SystemEmulationProcessorInformation | Invalid | Valid | Invalid |
| SystemExtendedHandleInformation | Invalid | Valid | Invalid |
| SystemLostDelayedWriteInformation | Invalid | Valid | Invalid |
| SystemBigPoolInformation | Invalid | Valid | Invalid |
| SystemSessionPoolTagInformation | Invalid | Valid | Invalid |
| SystemSessionMappedViewInformation | Invalid | Valid | Invalid |
| SystemHotpatchInformation | Valid | Valid | Invalid |
| SystemObjectSecurityMode | Invalid | Valid | Invalid |
| SystemWatchdogTimerHandler | Valid | Invalid | Invalid |
| SystemWatchdogTimerInformation | Valid | Valid | Invalid |
| SystemLogicalProcessorInformation | Invalid | Valid | Invalid |
| SystemWow64SharedInformationObsolete | Not implemented | Invalid | Invalid |
| SystemRegisterFirmwareTableInformationHandler | Valid | Invalid | Invalid |
| SystemFirmwareTableInformation | Invalid | Valid | Invalid |
| SystemModuleInformationEx | Invalid | Valid | Invalid |
| SystemVerifierTriageInformation | Invalid | Invalid | Invalid |
| SystemSuperfetchInformation | Valid | Valid | Invalid |
| SystemMemoryListInformation | Valid | Valid | Invalid |
| SystemFileCacheInformationEx | Valid | Valid | Invalid |
| SystemThreadPriorityClientIdInformation | Valid | Invalid | Invalid |
| SystemProcessorIdleCycleTimeInformation | Invalid | Valid | Valid |
| SystemVerifierCancellationInformation | Invalid | Invalid | Invalid |
| SystemProcessorPowerInformationEx | Invalid | Invalid | Invalid |
| SystemRefTraceInformation | Valid | Valid | Invalid |
| SystemSpecialPoolInformation | Valid | Valid | Invalid |
| SystemProcessIdInformation | Invalid | Valid | Invalid |
| SystemErrorPortInformation | Valid | Invalid | Invalid |
| SystemBootEnvironmentInformation | Invalid | Valid | Invalid |
| SystemHypervisorInformation | Valid | Valid | Invalid |
| SystemVerifierInformationEx | Valid | Valid | Invalid |
| SystemTimeZoneInformation | Valid | Invalid | Invalid |
| SystemImageFileExecutionOptionsInformation | Valid | Invalid | Invalid |
| SystemCoverageInformation | Valid | Valid | Invalid |
| SystemPrefetchPatchInformation | Invalid | Not implemented | Invalid |
| SystemVerifierFaultsInformation | Valid | Invalid | Invalid |
| SystemSystemPartitionInformation | Invalid | Valid | Invalid |
| SystemSystemDiskInformation | Invalid | Valid | Invalid |
| SystemProcessorPerformanceDistribution | Invalid | Valid | Valid |
| SystemNumaProximityNodeInformation | Invalid | Valid | Invalid |
| SystemDynamicTimeZoneInformation | Valid | Valid | Invalid |
| SystemCodeIntegrityInformation | Invalid | Valid | Invalid |
| SystemProcessorMicrocodeUpdateInformation | Valid | Invalid | Invalid |
| SystemProcessorBrandString | Invalid | Valid | Invalid |
| SystemVirtualAddressInformation | Invalid | Invalid | Invalid |
| SystemLogicalProcessorAndGroupInformation | Invalid | Invalid | Valid |
| SystemProcessorCycleTimeInformation | Invalid | Valid | Valid |
| SystemStoreInformation | Valid | Valid | Invalid |
| SystemRegistryAppendString | Not implemented | Invalid | Invalid |
| SystemAitSamplingValue | Valid | Invalid | Invalid |
| SystemVhdBootInformation | Invalid | Valid | Invalid |
| SystemCpuQuotaInformation | Valid | Valid | Invalid |
| SystemNativeBasicInformation | Invalid | Valid | Invalid |
| SystemErrorPortTimeouts | Invalid | Valid | Invalid |
| SystemLowPriorityIoInformation | Invalid | Valid | Invalid |
| SystemBootEntropyInformation | Invalid | Valid | Invalid |
| SystemVerifierCountersInformation | Invalid | Valid | Invalid |
| SystemPagedPoolInformationEx | Invalid | Valid | Invalid |
| SystemSystemPtesInformationEx | Invalid | Valid | Invalid |
| SystemNodeDistanceInformation | Invalid | Invalid | Valid |
| SystemAcpiAuditInformation | Invalid | Valid | Invalid |
| SystemBasicPerformanceInformation | Invalid | Valid | Invalid |
| SystemQueryPerformanceCounterInformation | Invalid | Valid | Invalid |
| SystemSessionBigPoolInformation | Invalid | Valid | Invalid |
| SystemBootGraphicsInformation | Valid | Valid | Invalid |
| SystemScrubPhysicalMemoryInformation | Valid | Invalid | Invalid |
| SystemBadPageInformation | Invalid | Valid | Invalid |
| SystemProcessorProfileControlArea | Valid | Invalid | Invalid |
| SystemCombinePhysicalMemoryInformation | Valid | Invalid | Invalid |
| SystemEntropyInterruptTimingInformation | Valid | Invalid | Invalid |
| SystemConsoleInformation | Valid | Invalid | Invalid |
| SystemPlatformBinaryInformation | Invalid | Valid | Invalid |
| SystemPolicyInformation | Valid | Valid | Invalid |
| SystemHypervisorProcessorCountInformation | Invalid | Valid | Invalid |
| SystemDeviceDataInformation | Invalid | Valid | Invalid |
| SystemDeviceDataEnumerationInformation | Invalid | Valid | Invalid |
| SystemMemoryTopologyInformation | Invalid | Valid | Invalid |
| SystemMemoryChannelInformation | Invalid | Valid | Invalid |
| SystemBootLogoInformation | Invalid | Valid | Invalid |
| SystemProcessorPerformanceInformationEx | Invalid | Valid | Valid |
| SystemCriticalProcessErrorLogInformation | Valid | Invalid | Invalid |
| SystemSecureBootPolicyInformation | Invalid | Valid | Invalid |
| SystemPageFileInformationEx | Invalid | Valid | Invalid |
| SystemSecureBootInformation | Invalid | Valid | Invalid |
| SystemEntropyInterruptTimingRawInformation | Invalid | Invalid | Invalid |
| SystemPortableWorkspaceEfiLauncherInformation | Invalid | Valid | Invalid |
| SystemFullProcessInformation | Invalid | Valid | Invalid |
| SystemKernelDebuggerInformationEx | Invalid | Valid | Invalid |
| SystemBootMetadataInformation | Valid | Valid | Invalid |
| SystemSoftRebootInformation | Valid | Valid | Invalid |
| SystemElamCertificateInformation | Valid | Invalid | Invalid |
| SystemOfflineDumpConfigInformation | Invalid | Valid | Invalid |
| SystemProcessorFeaturesInformation | Invalid | Valid | Invalid |
| SystemRegistryReconciliationInformation | Valid | Invalid | Invalid |
| SystemEdidInformation | Invalid | Valid | Invalid |
| SystemManufacturingInformation | Invalid | Valid | Invalid |
| SystemEnergyEstimationConfigInformation | Invalid | Valid | Invalid |
| SystemHypervisorDetailInformation | Valid | Valid | Invalid |
| SystemProcessorCycleStatsInformation | Invalid | Valid | Valid |
| SystemVmGenerationCountInformation | Valid | Invalid | Invalid |
| SystemTrustedPlatformModuleInformation | Invalid | Valid | Invalid |
| SystemKernelDebuggerFlags | Invalid | Valid | Invalid |
| SystemCodeIntegrityPolicyInformation | Valid | Valid | Invalid |
| SystemIsolatedUserModeInformation | Invalid | Valid | Valid |
| SystemHardwareSecurityTestInterfaceResultsInformation | Invalid | Valid | Invalid |
| SystemSingleModuleInformation | Invalid | Valid | Invalid |
| SystemAllowedCpuSetsInformation | Valid | Invalid | Invalid |
| SystemVsmProtectionInformation | Invalid | Valid | Invalid |
| SystemInterruptCpuSetsInformation | Valid | Invalid | Invalid |
| SystemSecureBootPolicyFullInformation | Invalid | Valid | Invalid |
| SystemCodeIntegrityPolicyFullInformation | Invalid | Valid | Invalid |
| SystemAffinitizedInterruptProcessorInformation | Invalid | Valid | Invalid |
| SystemRootSiloInformation | Invalid | Valid | Invalid |
| SystemCpuSetInformation | Invalid | Valid | Valid |
| SystemCpuSetTagInformation | Valid | Invalid | Invalid |
| SystemWin32WerStartCallout | Valid | Invalid | Invalid |
| SystemSecureKernelProfileInformation | Invalid | Valid | Valid |
| SystemCodeIntegrityPlatformManifestInformation | Invalid | Valid | Invalid |
| SystemInterruptSteeringInformation | Invalid | Invalid | Valid |
| SystemSupportedProcessorArchitectures | Invalid | Valid | Valid |
| SystemMemoryUsageInformation | Invalid | Valid | Invalid |
| SystemCodeIntegrityCertificateInformation | Invalid | Valid | Invalid |
| SystemPhysicalMemoryInformation | Invalid | Valid | Invalid |
| SystemControlFlowTransition | Invalid | Valid | Invalid |
| SystemKernelDebuggingAllowed | Invalid | Valid | Invalid |
| SystemActivityModerationExeState | Valid | Invalid | Invalid |
| SystemActivityModerationUserSettings | Invalid | Valid | Invalid |
| SystemCodeIntegrityPoliciesFullInformation | Invalid | Valid | Invalid |
| SystemCodeIntegrityUnlockInformation | Valid | Valid | Invalid |
| SystemIntegrityQuotaInformation | Valid | Invalid | Invalid |
| SystemFlushInformation | Invalid | Valid | Invalid |
| SystemProcessorIdleMaskInformation | Invalid | Valid | Invalid |
| SystemSecureDumpEncryptionInformation | Valid | Valid | Valid |
| SystemWriteConstraintInformation | Invalid | Valid | Invalid |
| SystemKernelVaShadowInformation | Invalid | Valid | Invalid |
| SystemHypervisorSharedPageInformation | Invalid | Valid | Invalid |
| SystemFirmwareBootPerformanceInformation | Invalid | Valid | Invalid |
| SystemCodeIntegrityVerificationInformation | Valid | Valid | Invalid |
| SystemFirmwarePartitionInformation | Invalid | Valid | Invalid |
| SystemSpeculationControlInformation | Invalid | Valid | Invalid |
| SystemDmaGuardPolicyInformation | Invalid | Valid | Invalid |
| SystemEnclaveLaunchControlInformation | Invalid | Invalid | Invalid |
| SystemWorkloadAllowedCpuSetsInformation | Valid | Invalid | Invalid |
| SystemCodeIntegrityUnlockModeInformation | Invalid | Invalid | Invalid |
| SystemLeapSecondInformation | Valid | Valid | Invalid |
| SystemFlags2Information | Valid | Valid | Invalid |
| SystemSecurityModelInformation | Invalid | Valid | Invalid |
| SystemCodeIntegritySyntheticCacheInformation | Invalid | Valid | Valid |
| SystemFeatureConfigurationInformation | Valid | Invalid | Valid |
| SystemFeatureConfigurationSectionInformation | Invalid | Invalid | Valid |
| SystemFeatureUsageSubscriptionInformation | Valid | Invalid | Invalid |
| SystemSecureSpeculationControlInformation | Invalid | Valid | Invalid |
| SystemSpacesBootInformation | Invalid | Valid | Invalid |
| SystemFwRamdiskInformation | Invalid | Valid | Invalid |
| SystemWheaIpmiHardwareInformation | Invalid | Valid | Invalid |
| SystemDifSetRuleClassInformation | Valid | Invalid | Invalid |
| SystemDifClearRuleClassInformation | Valid | Invalid | Invalid |
| SystemDifApplyPluginVerificationOnDriver | Valid | Invalid | Invalid |
| SystemDifRemovePluginVerificationOnDriver | Valid | Invalid | Invalid |
| SystemShadowStackInformation | Invalid | Valid | Invalid |
| SystemBuildVersionInformation | Invalid | Invalid | Valid |
| SystemPoolLimitInformation | Valid | Invalid | Valid |
| SystemCodeIntegrityAddDynamicStore | Valid | Invalid | Invalid |
| SystemCodeIntegrityClearDynamicStores | Valid | Invalid | Invalid |
| SystemDifPoolTrackingInformation | Valid | Invalid | Invalid |
| SystemPoolZeroingInformation | Invalid | Valid | Invalid |
| SystemDpcWatchdogInformation | Valid | Valid | Invalid |
| SystemDpcWatchdogInformation2 | Valid | Valid | Invalid |
| SystemSupportedProcessorArchitectures2 | Invalid | Valid | Valid |
| SystemSingleProcessorRelationshipInformation | Invalid | Invalid | Valid |
| SystemXfgCheckFailureInformation | Invalid | Valid | Valid |
| SystemIommuStateInformation | Valid | Invalid | Invalid |
| SystemHypervisorMinrootInformation | Invalid | Valid | Invalid |
| SystemHypervisorBootPagesInformation | Valid | Invalid | Invalid |
| SystemPointerAuthInformation | Invalid | Valid | Invalid |
| SystemSecureKernelDebuggerInformation | Invalid | Valid | Invalid |
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