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CHANGELOG.md

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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[11.0.2] - 2024-04-29

  • Fix bug in has_waitpkg using wrong bit flag.

[11.0.1] - 2023-05-03

  • Fix a regression from v10.7.0. CpuIdReader was falsely required to implement Debug for CpuId::debug() which is too strict.

[11.0.0] - 2023-04-17

Breaking changes

  • The CpuId type now takes a generic reader argument CpuId<R: CpuIdReader>: which allows for more flexibility on how cpuid is queried and better support for using the library on non-x86 targets. This is a breaking change for users of with_cpuid_fn and potentially when specifying CpuId as a type argument somewhere. To make existing code compile again, whenever a generic type argument for CpuId is needed, you can use the cpuid::NativeCpuIdReader type which provides the default behavior of execution the cpuid instruction.

    For example, in your code there might be cases where the compiler now asks you to specify the generic type of CpuId: e.g., fn take_cpuid(cpuid: CpuId) would become: fn take_cpuid(cpuid: CpuId<NativeCpuIdReader>)

    See also #140 and #138 for the original discussion.

  • If you're using the serialization feature: It go revamped by fixing some long-standing problems with it that made it difficult to use #87. All types except CpuIdResult types lost their Serialize and Deserialize derives. Check the new example on how to serialize and deserialize cpuid information.

Other changes

  • Updated bitflags to v2.

[10.7.0] - 2023-02-27

  • Include the pretty printing code in the library (instead of only having it in the binary) (#137) This introduces a new (optional) display feature. display will also enable std so it can't be used in no_std environments.

[10.6.1] - 2023-02-03

  • Fix potential overflow during formatting when using the in cpuid binary to display cache information. (#133)

[10.6.0] - 2022-09-12

  • Updated termimad to 0.20 (only affects cpuid binary version)
  • Add support for AMD leaf 0x8000_001E
  • Add support for AMD leaf 0x8000_0019
  • Updated ExtendedFeatures to include new features

[10.5.0] - 2022-08-17

  • Updated phf to 0.11 (only affects cfg(test))
  • Add support for AMD leaf 0x8000_001D
  • Add support for AMD leaf 0x8000_001A

[10.4.0] - 2022-08-01

  • Added support for cpuid leaf 0x1f (Extended Topology Information v2)
  • Improved debug formatting for ProcessorCapacityAndFeatureInfo

[10.3.0] - 2022-03-15

Added

  • Added ExtendedFeatures::has_avx512vnni().
  • Allow to build/use the crate even if native_cpuid is not available on the target (one can still instantiate CpuId using with_cpuid_fn in this case).

Changed

  • Updated clap dependency.

[10.2.0] - 2021-07-30

Added

  • Fix Cache and TLB (leaf 0x02) formatting in cpuid binary.

Changed

  • Added JSON and raw formatting to cpuid binary.

[10.1.0] - 2021-07-30

Added

  • AMD SVM feature leaf (0x8000_000A)
  • Added methods to display upper 64-96 bits of processor serial number (serial_all, serial_upper)
  • Implement Display for CacheType
  • Implement Display for TopologyType
  • Implement Display for DatType
  • Implement Display for Associativity
  • Added location() method for ExtendedState as an alternative for is_in_ia32_xss and is_in_xcr0.
  • Added new register() method for ExtendedState to identify which register this instance refers to.

Changed

  • Better formatting for cpuid binary.

[10.0.0] - 2021-07-14

Breaking changes for v10

  • Removed get_extended_function_info / ExtendedFunctionInfo due to added AMD support: Use get_processor_brand_string, get_extended_processor_and_feature_identifiers, get_l1_cache_and_tlb_info, get_l2_l3_cache_and_tlb_info, get_advanced_power_mgmt_info, get_processor_capacity_feature_info instead:

    Migration guide for replacing get_extended_function_info / ExtendedFunctionInfo:

    <= v9 >= v10
    processor_brand_string() CpuId.get_processor_brand_string
    cache_line_size() Cpuid.get_l2_l3_cache_and_tlb_info().l2cache_line_size()
    l2_associativity() Cpuid.get_l2_l3_cache_and_tlb_info().l2cache_associativity()
    cache_size() Cpuid.get_l2_l3_cache_and_tlb_info().l2cache_size()
    physical_address_bits() CpuId.get_processor_capacity_feature_info().physical_address_bits()
    linear_address_bits() CpuId.get_processor_capacity_feature_info().linear_address_bits()
    has_invariant_tsc() CpuId.get_advanced_power_mgmt_info.has_invariant_tsc()
    has_lahf_sahf() CpuId.get_extended_processor_and_feature_identifiers().has_lahf_sahf()
    has_lzcnt() CpuId.get_extended_processor_and_feature_identifiers().has_lzcnt()
    has_prefetchw() CpuId.get_extended_processor_and_feature_identifiers().has_prefetchw()
    has_syscall_sysret() CpuId.get_extended_processor_and_feature_identifiers().has_syscall_sysret()
    has_execute_disable() CpuId.get_extended_processor_and_feature_identifiers().has_execute_disable()
    has_1gib_pages() CpuId.get_extended_processor_and_feature_identifiers().has_1gib_pages()
    has_rdtscp() CpuId.get_extended_processor_and_feature_identifiers().has_rdtscp()
    has_64bit_mode() CpuId.get_extended_processor_and_feature_identifiers().has_64bit_mode()

  • Removed CpuId.deterministic_address_translation_info. Use CpuId.get_deterministic_address_translation_info instead.

  • Renamed model_id and family_id to base_model_id and base_family_id in FeatureInfo. Added new family_id and model_id functions that compute the actual model and family according to the spec by joining base and extended family/model.

  • Extend Hypervisor enum with more variants (#50)

  • Remove has_rdseet function (deprecated since 3.2), clients should use the correctly named has_rdseed function instead.

    Migration guide for cpuid.get_feature_info():

    <= v9 >= v10
    has_rdseet() has_rdseed()

  • Removed Default traits for most structs. default() should not be used anymore.

Changes

  • Updated Debug trait for SGX iterators.
  • Make CpuId derive Clone and Copy (#53)
  • Improved documentation in some places by adding leaf numbers.
  • Updated AMD leaf 0x8000_001f (Encrypted Memory) to latest manual.
  • ProcessorBrandString.as_str() now trims the returned string.
  • Fix RdtAllocationInfo.memory_bandwidth_allocation() which was using l2cat availability to determine if it exists.

Added

  • Added AMD support for leaf 0x8000_0001
  • Added AMD support for leaf 0x8000_0005
  • Added AMD support for leaf 0x8000_0006
  • Added AMD support for leaf 0x8000_0007
  • Added AMD support for leaf 0x8000_0008

Deprecated

  • VendorInfo.as_string() is deprecated in favor of VendorInfo.as_str()
  • SoCVendorBrand.as_string() is deprecated in favor of SoCVendorBrand.as_str()

[9.1.1] - 2021-07-06

Changed

  • Use more idiomatic rust code in readme/doc.rs example.
  • Use str::from_utf8 instead of str::from_utf8_unchecked to avoid potential panics with the Deserialize trait (#43).
  • More extensive Debug trait implementation (#49)
  • Fix 2 clippy warnings

[9.1.0] - 2021-07-03

Added

  • A CpuId::with_cpuid_fn that allows to override the default cpuid function.

Changed

  • Fixed RdtAllocationInfo.has_memory_bandwidth_allocation: was using the wrong bit
  • Fixed capacity_mask_length in L3CatInfo and L2CatInfo: add +1 to returned value
  • Fixed MemBwAllocationInfo.max_hba_throttling: add +1 to returned value
  • Refactored tests into a module.
  • Started to add tests for Ryzen/AMD.