linux-kernel - Re: [PATCHv4 00/11] SVM: virtual NMI

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Date:   Wed, 22 Mar 2023 17:57:09 -0700
From:   Sean Christopherson <seanjc@...gle.com>
To:     Santosh Shukla <santosh.shukla@....com>
Cc:     kvm@...r.kernel.org, pbonzini@...hat.com, jmattson@...gle.com,
        joro@...tes.org, linux-kernel@...r.kernel.org,
        mail@...iej.szmigiero.name, mlevitsk@...hat.com,
        thomas.lendacky@....com, vkuznets@...hat.com
Subject: Re: [PATCHv4 00/11] SVM: virtual NMI

On Mon, Feb 27, 2023, Santosh Shukla wrote:
> Maxim Levitsky (2):
>   KVM: nSVM: Raise event on nested VM exit if L1 doesn't intercept IRQs
>   KVM: SVM: add wrappers to enable/disable IRET interception
> 
> Santosh Shukla (6):
>   KVM: nSVM: Don't sync vmcb02 V_IRQ back to vmcb12 if KVM (L0) is
>     intercepting VINTR
>   KVM: nSVM: Disable intercept of VINTR if saved RFLAG.IF is 0
>   x86/cpu: Add CPUID feature bit for VNMI
>   KVM: SVM: Add VNMI bit definition
>   KVM: x86: add support for delayed virtual NMI injection interface
>   KVM: nSVM: implement support for nested VNMI
> 
> Sean Christopherson (3):
>   KVM: x86: Raise an event request when processing NMIs if an NMI is
>     pending
>   KVM: x86: Tweak the code and comment related to handling concurrent
>     NMIs
>   KVM: x86: Save/restore all NMIs when multiple NMIs are pending
> 
>  arch/x86/include/asm/cpufeatures.h |   1 +
>  arch/x86/include/asm/kvm-x86-ops.h |   2 +
>  arch/x86/include/asm/kvm_host.h    |  11 ++-
>  arch/x86/include/asm/svm.h         |   9 ++
>  arch/x86/kvm/svm/nested.c          |  94 +++++++++++++++---
>  arch/x86/kvm/svm/svm.c             | 152 +++++++++++++++++++++++------
>  arch/x86/kvm/svm/svm.h             |  28 ++++++
>  arch/x86/kvm/x86.c                 |  46 +++++++--
>  8 files changed, 289 insertions(+), 54 deletions(-)

Code looks good overall, I'll fixup the changelogs and comments myself.  I just
need to run it through my usual test flow, which I should get done tomorrow.