linux-kernel - [PATCH v6 00/20] KVM: x86/pmu: selftests: Fixes and new tests

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Date:   Fri,  3 Nov 2023 17:02:18 -0700
From:   Sean Christopherson <seanjc@...gle.com>
To:     Sean Christopherson <seanjc@...gle.com>,
        Paolo Bonzini <pbonzini@...hat.com>
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Kan Liang <kan.liang@...ux.intel.com>,
        Dapeng Mi <dapeng1.mi@...ux.intel.com>,
        Jinrong Liang <cloudliang@...cent.com>,
        Like Xu <likexu@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Aaron Lewis <aaronlewis@...gle.com>
Subject: [PATCH v6 00/20] KVM: x86/pmu: selftests: Fixes and new tests

The series that just keeps on growing.  This started out as a smallish
series from Jinrong to add PMU counters test, but has now ballooned to be
fixes and tests (that to some extent do actually validate the fixes).

Except for the first patch, the fixes aren't tagged for stable as I don't
*think* there's anything particularly nasty, and it's not like KVM's vPMU
is bulletproof even with the fixes.

v6:
 - Test LLC references/misses with CFLUSH{OPT}. [Jim]
 - Make the tests play nice without PERF_CAPABILITIES. [Mingwei]
 - Don't squash eventsels that happen to match an unsupported arch event. [Kan]
 - Test PMC counters with forced emulation (don't ask how long it took me to
   figure out how to read integer module params).

v5: https://lore.kernel.org/all/20231024002633.2540714-1-seanjc@google.com
v4: https://lore.kernel.org/all/20230911114347.85882-1-cloudliang@tencent.com
v3: https://lore.kernel.org/kvm/20230814115108.45741-1-cloudliang@tencent.com

Jinrong Liang (7):
  KVM: selftests: Add vcpu_set_cpuid_property() to set properties
  KVM: selftests: Add pmu.h and lib/pmu.c for common PMU assets
  KVM: selftests: Test Intel PMU architectural events on gp counters
  KVM: selftests: Test Intel PMU architectural events on fixed counters
  KVM: selftests: Test consistency of CPUID with num of gp counters
  KVM: selftests: Test consistency of CPUID with num of fixed counters
  KVM: selftests: Add functional test for Intel's fixed PMU counters

Sean Christopherson (13):
  KVM: x86/pmu: Don't allow exposing unsupported architectural events
  KVM: x86/pmu: Don't enumerate support for fixed counters KVM can't
    virtualize
  KVM: x86/pmu: Don't enumerate arch events KVM doesn't support
  KVM: x86/pmu: Always treat Fixed counters as available when supported
  KVM: x86/pmu: Allow programming events that match unsupported arch
    events
  KVM: selftests: Drop the "name" param from KVM_X86_PMU_FEATURE()
  KVM: selftests: Extend {kvm,this}_pmu_has() to support fixed counters
  KVM: selftests: Expand PMU counters test to verify LLC events
  KVM: selftests: Add a helper to query if the PMU module param is
    enabled
  KVM: selftests: Add helpers to read integer module params
  KVM: selftests: Query module param to detect FEP in MSR filtering test
  KVM: selftests: Move KVM_FEP macro into common library header
  KVM: selftests: Test PMC virtualization with forced emulation

 arch/x86/include/asm/kvm-x86-pmu-ops.h        |   1 -
 arch/x86/kvm/pmu.c                            |   1 -
 arch/x86/kvm/pmu.h                            |   5 +-
 arch/x86/kvm/svm/pmu.c                        |   6 -
 arch/x86/kvm/vmx/pmu_intel.c                  |  67 ++-
 tools/testing/selftests/kvm/Makefile          |   2 +
 .../selftests/kvm/include/kvm_util_base.h     |   4 +
 tools/testing/selftests/kvm/include/pmu.h     |  84 +++
 .../selftests/kvm/include/x86_64/processor.h  |  80 ++-
 tools/testing/selftests/kvm/lib/kvm_util.c    |  62 +-
 tools/testing/selftests/kvm/lib/pmu.c         |  28 +
 .../selftests/kvm/lib/x86_64/processor.c      |  12 +-
 .../selftests/kvm/x86_64/pmu_counters_test.c  | 567 ++++++++++++++++++
 .../kvm/x86_64/pmu_event_filter_test.c        |  34 +-
 .../smaller_maxphyaddr_emulation_test.c       |   2 +-
 .../kvm/x86_64/userspace_msr_exit_test.c      |  29 +-
 .../selftests/kvm/x86_64/vmx_pmu_caps_test.c  |   2 +-
 17 files changed, 877 insertions(+), 109 deletions(-)
 create mode 100644 tools/testing/selftests/kvm/include/pmu.h
 create mode 100644 tools/testing/selftests/kvm/lib/pmu.c
 create mode 100644 tools/testing/selftests/kvm/x86_64/pmu_counters_test.c


base-commit: 45b890f7689eb0aba454fc5831d2d79763781677
-- 
2.42.0.869.gea05f2083d-goog