Module cpuid

Support for the CPUID instructions.

Modules

native_cpuid

Uses Rust’s cpuid function from the arch module.

Macros

cpuid

Macro which queries cpuid directly.

Structs

ApmInfo

Processor Power Management and RAS Capabilities (LEAF=0x8000_0007).

CacheInfo

Describes any kind of cache (TLB, Data and Instruction caches plus prefetchers).

CacheInfoIter

Iterates over cache information (LEAF=0x02).

CacheParameter

Information about an individual cache in the hierarchy.

CacheParametersIter

Iterator over caches (LEAF=0x04).

CpuId

The main type used to query information about the CPU we’re running on.

CpuIdResult

Low-level data-structure to store result of cpuid instruction.

DatInfo

Deterministic Address Translation Structure

DatIter

Deterministic Address Translation Structure Iterator (LEAF=0x18).

DirectCacheAccessInfo

Direct cache access info (LEAF=0x09).

EpcSection

EBX:EAX and EDX:ECX provide information on the Enclave Page Cache (EPC) section

ExtendedFeatures

Structured Extended Feature Identifiers (LEAF=0x07).

ExtendedProcessorFeatureIdentifiers

Extended Processor and Processor Feature Identifiers (LEAF=0x8000_0001)

ExtendedState

ExtendedState subleaf structure for things that need to be restored.

ExtendedStateInfo

Information for saving/restoring extended register state (LEAF=0x0D).

ExtendedStateIter

Yields ExtendedState structs.

ExtendedTopologyIter

Information about topology (LEAF=0x0B).

ExtendedTopologyLevel

Gives information about the current level in the topology.

FeatureInfo

Processor and Processor Feature Identifiers (LEAF=0x01).

HypervisorInfo

Information about Hypervisor (LEAF=0x4000_0001)

L1CacheTlbInfo

L1 Cache and TLB Information (LEAF=0x8000_0005).

L2And3CacheTlbInfo

L2/L3 Cache and TLB Information (LEAF=0x8000_0006).

L2CatInfo

L2 Cache Allocation Technology Enumeration Sub-leaf (LEAF=0x10, SUBLEAF=2).

L3CatInfo

L3 Cache Allocation Technology Enumeration Sub-leaf (LEAF=0x10, SUBLEAF=1).

L3MonitoringInfo

Information about L3 cache monitoring.

MemBwAllocationInfo

Memory Bandwidth Allocation Enumeration Sub-leaf (LEAF=0x10, SUBLEAF=3).

MemoryEncryptionInfo

Encrypted Memory Capabilities (LEAF=0x8000_001F).

MonitorMwaitInfo

Information about how monitor/mwait works on this CPU (LEAF=0x05).

PerformanceMonitoringInfo

Info about performance monitoring – how many counters etc. (LEAF=0x0A)

PerformanceOptimizationInfo

Performance Optimization Identifier (LEAF=0x8000_001A).

ProcessorBrandString

Processor name (LEAF=0x8000_0002..=0x8000_0004).

ProcessorCapacityAndFeatureInfo

Processor Capacity Parameters and Extended Feature Identification (LEAF=0x8000_0008).

ProcessorFrequencyInfo

Processor Frequency Information (LEAF=0x16).

ProcessorSerial

Processor Serial Number (LEAF=0x3).

ProcessorTopologyInfo

Processor Topology Information (LEAF=0x8000_001E).

ProcessorTraceInfo

Intel Processor Trace Information (LEAF=0x14).

RdtAllocationInfo

Quality of service enforcement information (LEAF=0x10).

RdtMonitoringInfo

Intel Resource Director Technology RDT (LEAF=0x0F).

SgxInfo

Intel SGX Capability Enumeration Leaf (LEAF=0x12).

SgxSectionIter

Iterator over the SGX sub-leafs (ECX >= 2).

SoCVendorAttributesIter

Iterator for SoC vendor attributes.

SoCVendorBrand

A vendor brand string as queried from the cpuid leaf.

SoCVendorInfo

SoC vendor specific information (LEAF=0x17).

SvmFeatures

Information about the SVM features that the processory supports (LEAF=0x8000_000A).

ThermalPowerInfo

Query information about thermal and power management features of the CPU (LEAF=0x06).

Tlb1gbPageInfo

TLB 1-GiB Pages Information (LEAF=0x8000_0019).

TscInfo

Time Stamp Counter/Core Crystal Clock Information (LEAF=0x15).

VendorInfo

Vendor Info String (LEAF=0x0)

Enums

Associativity

Info about cache Associativity.

CacheInfoType

What type of cache are we dealing with?

CacheType

Info about a what a given cache caches (instructions, data, etc.)

DatType

Deterministic Address Translation cache type (EDX bits 04 – 00)

ExtendedRegisterStateLocation

Where the extended register state is stored.

ExtendedRegisterType

What kidn of extended register state this is.

Hypervisor

Identifies the different Hypervisor products.

SgxSectionInfo

Intel SGX EPC Enumeration Leaf

TopologyType

What type of core we have at this level in the topology (real CPU or hyper-threaded).

Constants

CACHE_INFO_TABLE

This table is taken from Intel manual (Section CPUID instruction).