linux-kernel - Re: [RFC PATCH 0/2] KVM: MSR-based features

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Message-ID: <4732839a-48bb-9183-be4e-0b7233094265@amd.com>
Date:   Thu, 8 Feb 2018 17:03:04 -0600
From:   Tom Lendacky <thomas.lendacky@....com>
To:     x86@...nel.org, linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        Paolo Bonzini <pbonzini@...hat.com>
Cc:     Joerg Roedel <joro@...tes.org>, Borislav Petkov <bp@...en8.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Radim Krčmář <rkrcmar@...hat.com>
Subject: Re: [RFC PATCH 0/2] KVM: MSR-based features

On 2/8/2018 4:58 PM, Tom Lendacky wrote:
> The following series implements support within KVM for MSR-based features.
> The first patch creates the MSR-based feature framework used to initialize
> and retrieve the MSR-based features.  The second patch adds support that
> will allow a guest to determine if the LFENCE instruction is serializing
> on AMD processors.
> 
> This series is based on the next branch.
> 

Paolo,

Let me know if this is the direction you were thinking of for
MSR-based features.

Thanks,
Tom

> ---
> 
> Tom Lendacky (2):
>       KVM: x86: Add a framework for supporting MSR-based features
>       KVM: SVM: Add MSR feature support for serializing LFENCE
> 
> 
>  arch/x86/include/asm/kvm_host.h |    1 
>  arch/x86/kvm/svm.c              |   16 +++++
>  arch/x86/kvm/x86.c              |  114 ++++++++++++++++++++++++++++++++++++++-
>  include/uapi/linux/kvm.h        |    1 
>  4 files changed, 130 insertions(+), 2 deletions(-)
>