linux-kernel - [PATCH v4 0/6] nSVM/SVM features

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Date:   Tue, 22 Mar 2022 19:40:44 +0200
From:   Maxim Levitsky <mlevitsk@...hat.com>
To:     kvm@...r.kernel.org
Cc:     Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Sean Christopherson <seanjc@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, Joerg Roedel <joro@...tes.org>,
        linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
        Jim Mattson <jmattson@...gle.com>, x86@...nel.org,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Maxim Levitsky <mlevitsk@...hat.com>
Subject: [PATCH v4 0/6] nSVM/SVM features

This is a set of patches for optional SVM nested features.

V4: rebased on top of kvm/queue + my patch series 'SVM fixes + refactoring'
and incorporated all review feedback.

This was tested with kvm unit test, running on L0,L1, and L2,
and no new failures were seen.

This time I also tested this with all new features disabled in L1,
and in L2, to avoid repeating an issue I had in nested tsc scaling.

Best regards,
	Maxim Levitsky

Maxim Levitsky (6):
  KVM: x86: nSVM: correctly virtualize LBR msrs when L2 is running
  KVM: x86: nSVM: implement nested LBR virtualization
  KVM: x86: nSVM: support PAUSE filtering when L0 doesn't intercept
    PAUSE
  KVM: x86: nSVM: implement nested vGIF
  KVM: x86: allow per cpu apicv inhibit reasons
  KVM: x86: SVM: allow AVIC to co-exist with a nested guest running

 arch/x86/include/asm/kvm-x86-ops.h |   1 +
 arch/x86/include/asm/kvm_host.h    |   6 ++
 arch/x86/kvm/svm/avic.c            |   7 ++
 arch/x86/kvm/svm/nested.c          |  83 +++++++++++++--
 arch/x86/kvm/svm/svm.c             | 162 +++++++++++++++++++++++------
 arch/x86/kvm/svm/svm.h             |  41 ++++++--
 arch/x86/kvm/x86.c                 |  14 ++-
 7 files changed, 264 insertions(+), 50 deletions(-)

-- 
2.26.3