linux-kernel - Re: [PATCH 0/8] KVM: nSVM: ondemand nested state allocation + smm fixes

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Date:   Thu, 27 Aug 2020 20:12:14 +0300
From:   Maxim Levitsky <mlevitsk@...hat.com>
To:     kvm@...r.kernel.org
Cc:     Joerg Roedel <joro@...tes.org>, Borislav Petkov <bp@...en8.de>,
        Paolo Bonzini <pbonzini@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org,
        Ingo Molnar <mingo@...hat.com>,
        "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@...nel.org>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Jim Mattson <jmattson@...gle.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Sean Christopherson <sean.j.christopherson@...el.com>
Subject: Re: [PATCH 0/8] KVM: nSVM: ondemand nested state allocation + smm
 fixes

On Thu, 2020-08-27 at 20:04 +0300, Maxim Levitsky wrote:
> This patch series does some refactoring and implements on demand nested state area
> This way at least guests that don't use nesting won't waste memory
> on nested state.
> 
> This patch series is based on patch series '[PATCH 0/3] Few nSVM bugfixes'
> (patch #7 here should have beeing moved there as well to be honest)
> 
> The series was tested with various nested guests, and it seems to work
> as long as I disable the TSC deadline timer (this is unrelated to this
> patch series)
> 
> I addressed the review feedback from V2, and added few refactoring
> patches to this series as suggested.
> 
> Best regards,
>         Maxim Levitsky
> 
> Maxim Levitsky (8):
>   KVM: SVM: rename a variable in the svm_create_vcpu
>   KVM: nSVM: rename nested vmcb to vmcb12
>   KVM: SVM: refactor msr permission bitmap allocation
>   KVM: SVM: use __GFP_ZERO instead of clear_page
>   KVM: SVM: refactor exit labels in svm_create_vcpu
>   KVM: x86: allow kvm_x86_ops.set_efer to return a value
>   KVM: emulator: more strict rsm checks.
>   KVM: nSVM: implement ondemand allocation of the nested state
> 
>  arch/x86/include/asm/kvm_host.h |   2 +-
>  arch/x86/kvm/emulate.c          |  22 ++-
>  arch/x86/kvm/svm/nested.c       | 267 ++++++++++++++++++--------------
>  arch/x86/kvm/svm/svm.c          | 106 +++++++------
>  arch/x86/kvm/svm/svm.h          |  10 +-
>  arch/x86/kvm/vmx/vmx.c          |   9 +-
>  arch/x86/kvm/x86.c              |   3 +-
>  7 files changed, 243 insertions(+), 176 deletions(-)
> 
> -- 
> 2.26.2
> 
Ignore this one, I send this with wrong version.