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

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Message-ID: <0f56e139-4c7f-5220-a4a2-99f87f45fd83@amd.com>
Date:   Tue, 6 Dec 2022 15:28:18 +0530
From:   Santosh Shukla <santosh.shukla@....com>
To:     Maxim Levitsky <mlevitsk@...hat.com>, kvm@...r.kernel.org
Cc:     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>,
        Sean Christopherson <seanjc@...gle.com>,
        Santosh Shukla <santosh.shukla@....com>
Subject: Re: [PATCH v2 00/11] SVM: vNMI (with my fixes)

On 11/30/2022 1:07 AM, 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
> 
> 
Series tested on EPYC-v4.
Tested-By: Santosh Shukla <Santosh.Shukla@....com>

> 
> 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(-)
> 
> 
>