Changes since v4:
- Remove automatic CPUID adjustment when PMU disabled [Like]
- Update documentation and changelog to reflect above.
- Update documentation to document arg[0] and return values. [Like].
Original description:
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.
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 | 22 +++++++++
arch/x86/include/asm/kvm_host.h | 1 +
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 | 35 ++++++++++++++
10 files changed, 118 insertions(+), 15 deletions(-)
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2.35.0.rc0.227.g00780c9af4-goog
