linux-kernel - Re: [PATCH v2 28/28] KVM: nVMX: Use cached host MSR_IA32_VMX

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Message-ID: <CALMp9eRCbgYVGtAwpDWhytQSjeGeAOuqKZXVg3RpV92uKV5u0A@mail.gmail.com>
Date:   Wed, 29 Jun 2022 11:37:14 -0700
From:   Jim Mattson <jmattson@...gle.com>
To:     Vitaly Kuznetsov <vkuznets@...hat.com>
Cc:     kvm@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Anirudh Rayabharam <anrayabh@...ux.microsoft.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Maxim Levitsky <mlevitsk@...hat.com>,
        linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 28/28] KVM: nVMX: Use cached host MSR_IA32_VMX_MISC
 value for setting up nested MSR

On Wed, Jun 29, 2022 at 8:07 AM Vitaly Kuznetsov <vkuznets@...hat.com> wrote:
>
> vmcs_config has cased host MSR_IA32_VMX_MISC value, use it for setting
> up nested MSR_IA32_VMX_MISC in nested_vmx_setup_ctls_msrs() and avoid the
> redundant rdmsr().
>
> No (real) functional change intended.

Just imaginary functional change? :-)

>
> Signed-off-by: Vitaly Kuznetsov <vkuznets@...hat.com>
Reviewed-by: Jim Mattson <jmattson@...gle.com>