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[0/4] KVM: x86/pmu: An insightful refactoring of vPMU code

Message ID 20211116122030.4698-1-likexu@tencent.com (mailing list archive)
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Series KVM: x86/pmu: An insightful refactoring of vPMU code | expand

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Like Xu Nov. 16, 2021, 12:20 p.m. UTC 
Hi,

This patch set is essentially triggered by Jim's patch set[1]
(especially patch 01 and 04).

The new idea to set up and maintain pmc->eventsel for fixed counters.
This would unify all fixed/gp code logic based on the same semantics
"pmc->eventse". (I demonstrated this in patch 01-03, more can be done)

[1] https://lore.kernel.org/kvm/96170437-1e00-7841-260e-39d181e7886d@gmail.com/T/#t

Please check each commit message for more details
and let me know if there is any room for improvement,

Thanks.

Like Xu (4):
  KVM: x86/pmu: Setup pmc->eventsel for fixed PMCs
  KVM: x86/pmu: Refactoring find_arch_event() to find_perf_hw_id()
  KVM: x86/pmu: Reuse find_perf_hw_id() and drop find_fixed_event()
  KVM: x86/pmu: Refactoring kvm_perf_overflow{_intr}()

 arch/x86/kvm/pmu.c           | 74 ++++++++++++++++++------------------
 arch/x86/kvm/pmu.h           |  4 +-
 arch/x86/kvm/svm/pmu.c       | 19 ++++-----
 arch/x86/kvm/vmx/pmu_intel.c | 54 +++++++++++++++++---------
 4 files changed, 83 insertions(+), 68 deletions(-)