Re: [PATCH v3 0/5] KVM: selftests: aarch64: Introduce pmu_event_filter_test

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Hi Eric,

On 1/26/24 18:25, Eric Auger wrote:
Hi Shaoqin,

On 1/16/24 07:01, Shaoqin Huang wrote:
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.
which branch does it apply on? I fail to apply on top on main.

Or can you provide a branch?

This was based on v6.7.


Eric

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@xxxxxxxxxx/
v2: https://lore.kernel.org/all/20231129072712.2667337-1-shahuang@xxxxxxxxxx/

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



--
Shaoqin





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