linux-kernel - [PATCH v4 0/4] KVM: x86: tracepoint updates

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Message-Id: <20231205103745.506724-1-mlevitsk@redhat.com>
Date:   Tue,  5 Dec 2023 12:37:41 +0200
From:   Maxim Levitsky <mlevitsk@...hat.com>
To:     kvm@...r.kernel.org
Cc:     Sean Christopherson <seanjc@...gle.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>,
        Borislav Petkov <bp@...en8.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        "H. Peter Anvin" <hpa@...or.com>,
        Maxim Levitsky <mlevitsk@...hat.com>
Subject: [PATCH v4 0/4] KVM: x86: tracepoint updates

This patch series is intended to add some selected information
to the kvm tracepoints to make it easier to gather insights about
running nested guests.

This patch series was developed together with a new x86 performance analysis tool
that I developed recently (https://gitlab.com/maximlevitsky/kvmon)
which aims to be a better kvm_stat, and allows you at glance
to see what is happening in a VM, including nesting.

V4: addressed review feedback

Best regards,
	Maxim Levitsky

Maxim Levitsky (4):
  KVM: x86: refactor req_immediate_exit logic
  KVM: x86: add more information to the kvm_entry tracepoint
  KVM: x86: add information about pending requests to kvm_exit
    tracepoint
  KVM: x86: add new nested vmexit tracepoints

 arch/x86/include/asm/kvm-x86-ops.h |   2 +-
 arch/x86/include/asm/kvm_host.h    |  10 +--
 arch/x86/kvm/svm/nested.c          |  22 ++++++
 arch/x86/kvm/svm/svm.c             |  24 ++++++-
 arch/x86/kvm/trace.h               | 105 +++++++++++++++++++++++++++--
 arch/x86/kvm/vmx/nested.c          |  27 ++++++++
 arch/x86/kvm/vmx/vmx.c             |  30 +++++----
 arch/x86/kvm/vmx/vmx.h             |   2 -
 arch/x86/kvm/x86.c                 |  34 +++++-----
 9 files changed, 209 insertions(+), 47 deletions(-)

-- 
2.26.3