linux-kernel - [PATCH v3 0/5] KVM: selftests: aarch64: Introduce pmu_event_filter

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Message-Id: <20240116060129.55473-1-shahuang@redhat.com>
Date: Tue, 16 Jan 2024 01:01:18 -0500
From: Shaoqin Huang <shahuang@...hat.com>
To: Oliver Upton <oliver.upton@...ux.dev>,
	Marc Zyngier <maz@...nel.org>,
	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 v3 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:
----------
v2->v3:
  - Check the pmceid in guest code instead of pmu event count since different
  hardware may have different event count result, check pmceid makes it stable
  on different platform.                        [Eric]
  - Some typo fixed and commit message improved.

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/
v2: https://lore.kernel.org/all/20231129072712.2667337-1-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       | 255 ++++++++++++++++++
 .../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, 490 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