linux-kernel - [PATCH v2 0/5] KVM: selftests: aarch64: Introduce pmu_event_filter

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Date:   Wed, 29 Nov 2023 02:27:02 -0500
From:   Shaoqin Huang <shahuang@...hat.com>
To:     Marc Zyngier <maz@...nel.org>,
        Oliver Upton <oliver.upton@...ux.dev>, kvmarm@...ts.linux.dev
Cc:     Eric Auger <eauger@...hat.com>,
        Shaoqin Huang <shahuang@...hat.com>,
        James Morse <james.morse@....com>, kvm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org,
        Paolo Bonzini <pbonzini@...hat.com>,
        Shuah Khan <shuah@...nel.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Zenghui Yu <yuzenghui@...wei.com>
Subject: [PATCH v2 0/5] KVM: selftests: aarch64: Introduce pmu_event_filter_test

The test is inspired by the pmu_event_filter_test which implemented by x86. On
the arm64 platform, there is the same ability to set the pmu_event_filter
through the KVM_ARM_VCPU_PMU_V3_FILTER attribute. So add the test for arm64.

The series first move some pmu common code from vpmu_counter_access to
lib/aarch64/vpmu.c and include/aarch64/vpmu.h, which can be used by
pmu_event_filter_test. Then fix a bug related to the [enable|disable]_counter,
and at last, implement the test itself.

Changelog:
----------
v1->v2:
  - Improve the commit message.                 [Eric]
  - Fix the bug in [enable|disable]_counter.    [Raghavendra & Marc]
  - Add the check if kvm has attr KVM_ARM_VCPU_PMU_V3_FILTER.
  - Add if host pmu support the test event throught pmceid0.
  - Split the test_invalid_filter() to another patch. [Eric]

v1: https://lore.kernel.org/all/20231123063750.2176250-1-shahuang@redhat.com/

Shaoqin Huang (5):
  KVM: selftests: aarch64: Make the [create|destroy]_vpmu_vm() public
  KVM: selftests: aarch64: Move pmu helper functions into vpmu.h
  KVM: selftests: aarch64: Fix the buggy [enable|disable]_counter
  KVM: selftests: aarch64: Introduce pmu_event_filter_test
  KVM: selftests: aarch64: Add invalid filter test in
    pmu_event_filter_test

 tools/testing/selftests/kvm/Makefile          |   2 +
 .../kvm/aarch64/pmu_event_filter_test.c       | 267 ++++++++++++++++++
 .../kvm/aarch64/vpmu_counter_access.c         | 218 ++------------
 .../selftests/kvm/include/aarch64/vpmu.h      | 135 +++++++++
 .../testing/selftests/kvm/lib/aarch64/vpmu.c  |  74 +++++
 5 files changed, 502 insertions(+), 194 deletions(-)
 create mode 100644 tools/testing/selftests/kvm/aarch64/pmu_event_filter_test.c
 create mode 100644 tools/testing/selftests/kvm/include/aarch64/vpmu.h
 create mode 100644 tools/testing/selftests/kvm/lib/aarch64/vpmu.c

-- 
2.40.1