linux-kernel - Re: [PATCH v2 00/11] SVM: vNMI (with my fixes)

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Message-ID: <Y6NUEV3FTq29R64F@google.com>
Date:   Wed, 21 Dec 2022 18:44:33 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     Maxim Levitsky <mlevitsk@...hat.com>
Cc:     kvm@...r.kernel.org, Santosh Shukla <santosh.shukla@....com>,
        Sandipan Das <sandipan.das@....com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Jim Mattson <jmattson@...gle.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Borislav Petkov <bp@...en8.de>,
        Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Josh Poimboeuf <jpoimboe@...nel.org>,
        Daniel Sneddon <daniel.sneddon@...ux.intel.com>,
        Jiaxi Chen <jiaxi.chen@...ux.intel.com>,
        Babu Moger <babu.moger@....com>, linux-kernel@...r.kernel.org,
        Jing Liu <jing2.liu@...el.com>,
        Wyes Karny <wyes.karny@....com>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH v2 00/11] SVM: vNMI (with my fixes)

On Tue, Dec 20, 2022, Maxim Levitsky wrote:
> On Tue, 2022-11-29 at 21:37 +0200, Maxim Levitsky wrote:
> > Hi!
> > 
> > This is the vNMI patch series based on Santosh Shukla's vNMI patch series.
> > 
> > In this version of this patch series I addressed most of the review feedback
> > added some more refactoring and also I think fixed the issue with migration.
> > 
> > I only tested this on a machine which doesn't have vNMI, so this does need
> > some testing to ensure that nothing is broken.
> > 
> > Best regards,
> >        Maxim Levitsky
> > 
> > Maxim Levitsky (9):
> >   KVM: nSVM: don't sync back tlb_ctl on nested VM exit
> >   KVM: nSVM: clean up the copying of V_INTR bits from vmcb02 to vmcb12
> >   KVM: nSVM: explicitly raise KVM_REQ_EVENT on nested VM exit if L1
> >     doesn't intercept interrupts
> >   KVM: SVM: drop the SVM specific H_FLAGS
> >   KVM: x86: emulator: stop using raw host flags
> >   KVM: SVM: add wrappers to enable/disable IRET interception
> >   KVM: x86: add a delayed hardware NMI injection interface
> >   KVM: SVM: implement support for vNMI
> >   KVM: nSVM: implement support for nested VNMI
> > 
> > Santosh Shukla (2):
> >   x86/cpu: Add CPUID feature bit for VNMI
> >   KVM: SVM: Add VNMI bit definition
> > 
> >  arch/x86/include/asm/cpufeatures.h |   1 +
> >  arch/x86/include/asm/kvm-x86-ops.h |   2 +
> >  arch/x86/include/asm/kvm_host.h    |  24 +++--
> >  arch/x86/include/asm/svm.h         |   7 ++
> >  arch/x86/kvm/emulate.c             |  11 +--
> >  arch/x86/kvm/kvm_emulate.h         |   7 +-
> >  arch/x86/kvm/smm.c                 |   2 -
> >  arch/x86/kvm/svm/nested.c          | 102 ++++++++++++++++---
> >  arch/x86/kvm/svm/svm.c             | 154 ++++++++++++++++++++++-------
> >  arch/x86/kvm/svm/svm.h             |  41 +++++++-
> >  arch/x86/kvm/x86.c                 |  50 ++++++++--
> >  11 files changed, 318 insertions(+), 83 deletions(-)
> > 
> > -- 
> > 2.26.3
> > 
> > 
> A very kind ping on these patches.

Sorry, I won't get to this (or anything else) until the new year.