Hi, The KVM selftests show advantages over KUT in terms of finding defects through flexible and varied guest settings from the KVM user space. This patchset tests whether the Intel vPMU works properly with different Intel CPUID.0xA configurations. It also provides test scaffolding and a sufficient number of PMU test cases to subsequently offer adequate code coverage of AMD vPMU or Intel complex features, such as LBR or PEBS, in selftests. Please feel free to add more tests or share valuable comments. Thanks v2: - Rebased to 5c291b93e5d6(tag: kvm-x86-next-2023.04.26) - Added a new patch to add macros to processor.h to obtain the number of fixed counters and fixed counters bit mask. (Sean) - Added a new patch to introduce a new pmu.h header file to better organize the PMU performance event constants and common masks. (Sean) - Changed the file name to pmu_basic_functionality_test. (Sean) - Replaced new_vcpu() with the new function pmu_vm_create_with_one_vcpu() and replaced free_vcpu() wrapper with kvm_vm_free(). (Sean) - Modified the run_vcpu() wrapper to return the first ucall param. (Sean) - Defined KVM_X86_CPU_PROPERTY macros where possible to avoid opening code in multiple places. (Sean) - Optimized the comment. (Sean, Jim) - Modified the guest logic to have the guest return the counter value and perform the assert in kvm user space. (Sean) - Used goto instead of the ternary operator in intel_guest_run_arch_event(). (Sean) - Added a test to check that KVM drops writes to MSR_P6_PERFCTR[0|1]. (Sean) - Used rdmsr_safe() and/or wrmsr_safe() instead of installing a dedicated handler. (Sean) - Optimized variables that do not need to be initialized. (Sean) - Removed patch KVM: selftests: Test Intel counters' bit width emulation. Previous: https://lore.kernel.org/kvm/20230323072714.82289-1-likexu@xxxxxxxxxxx/T/#u Jinrong Liang (5): KVM: selftests: Add macros for fixed counters in processor.h KVM: selftests: Add pmu.h for PMU events and common masks KVM: selftests: Test Intel PMU architectural events on fixed counters KVM: selftests: Test consistency of CPUID with num of fixed counters KVM: selftests: Test consistency of PMU MSRs with Intel PMU version Like Xu (3): KVM: selftests: Test Intel PMU architectural events on gp counters KVM: selftests: Test consistency of CPUID with num of gp counters KVM: selftests: Test Intel supported fixed counters bit mask tools/testing/selftests/kvm/Makefile | 1 + .../selftests/kvm/include/x86_64/pmu.h | 56 +++ .../selftests/kvm/include/x86_64/processor.h | 2 + .../kvm/x86_64/pmu_basic_functionality_test.c | 455 ++++++++++++++++++ 4 files changed, 514 insertions(+) create mode 100644 tools/testing/selftests/kvm/include/x86_64/pmu.h create mode 100644 tools/testing/selftests/kvm/x86_64/pmu_basic_functionality_test.c base-commit: 5c291b93e5d665380dbecc6944973583f9565ee5 -- 2.31.1
