mbox series

[v4,0/3] KVM: x86: Provide per VM capability for disabling PMU virtualization

Message ID 20220121222933.696067-1-daviddunn@google.com (mailing list archive)
Headers show
Series KVM: x86: Provide per VM capability for disabling PMU virtualization | expand

Message

David Dunn Jan. 21, 2022, 10:29 p.m. UTC 
This patch set allows usermode to disable PMU virtualization on
individual x86 VMs.  When disabled, the PMU is not advertised to
or accessible from the guest.

Corrected changes that I missed committing into v3 patch set.  This
incorporates Like's suggestions from reviewing v2.

David Dunn (3):
  KVM: x86: Provide per VM capability for disabling PMU virtualization
  KVM: selftests: Allow creation of selftest VM without vcpus
  KVM: selftests: Verify disabling PMU virtualization via
    KVM_CAP_CONFIG_PMU

 Documentation/virt/kvm/api.rst                | 21 ++++++++
 arch/x86/include/asm/kvm_host.h               |  1 +
 arch/x86/kvm/cpuid.c                          |  8 ++++
 arch/x86/kvm/svm/pmu.c                        |  2 +-
 arch/x86/kvm/vmx/pmu_intel.c                  |  2 +-
 arch/x86/kvm/x86.c                            | 12 +++++
 include/uapi/linux/kvm.h                      |  4 ++
 tools/include/uapi/linux/kvm.h                |  4 ++
 .../selftests/kvm/include/kvm_util_base.h     |  3 ++
 tools/testing/selftests/kvm/lib/kvm_util.c    | 48 ++++++++++++++-----
 .../kvm/x86_64/pmu_event_filter_test.c        | 45 +++++++++++++++++
 11 files changed, 135 insertions(+), 15 deletions(-)