linux-kernel - [RFC v1 0/9] PEBS enabling in KVM guest

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Date:   Thu, 29 Aug 2019 13:34:00 +0800
From:   Luwei Kang <luwei.kang@...el.com>
To:     pbonzini@...hat.com, rkrcmar@...hat.com
Cc:     sean.j.christopherson@...el.com, vkuznets@...hat.com,
        wanpengli@...cent.com, jmattson@...gle.com, joro@...tes.org,
        tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, hpa@...or.com,
        x86@...nel.org, ak@...ux.intel.com, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, Luwei Kang <luwei.kang@...el.com>
Subject: [RFC v1 0/9] PEBS enabling in KVM guest

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