Intel new hardware introduces some Precise Event-Based Sampling (PEBS) extensions that output the PEBS record to Intel PT stream instead of DS area. The PEBS record will be packaged in a specific format when outputing to Intel PT.
This patch set will enable PEBS functionality in KVM Guest by PEBS output to Intel PT. The native driver as [1] (still under review). [1] https://www.spinics.net/lists/kernel/msg3215354.html Luwei Kang (9): KVM: x86: Add base address parameter for get_fixed_pmc function KVM: x86: PEBS via Intel PT HW feature detection KVM: x86: Implement MSR_IA32_PEBS_ENABLE read/write emulation KVM: x86: Implement counter reload MSRs read/write emulation KVM: x86: Allocate performance counter for PEBS event KVM: x86: Add shadow value of PEBS status KVM: X86: Expose PDCM cpuid to guest KVM: X86: MSR_IA32_PERF_CAPABILITIES MSR emulation KVM: x86: Expose PEBS feature to guest arch/x86/include/asm/kvm_host.h | 8 ++++ arch/x86/include/asm/msr-index.h | 12 ++++++ arch/x86/kvm/cpuid.c | 3 +- arch/x86/kvm/pmu.c | 57 ++++++++++++++++++++++---- arch/x86/kvm/pmu.h | 11 ++--- arch/x86/kvm/pmu_amd.c | 2 +- arch/x86/kvm/svm.c | 12 ++++++ arch/x86/kvm/vmx/capabilities.h | 21 ++++++++++ arch/x86/kvm/vmx/pmu_intel.c | 88 +++++++++++++++++++++++++++++++++++----- arch/x86/kvm/vmx/vmx.c | 24 ++++++++++- arch/x86/kvm/x86.c | 22 +++++++--- 11 files changed, 229 insertions(+), 31 deletions(-) -- 1.8.3.1
