linux-kernel - Re: [RESEND v13 07/10] KVM: vmx/pmu: Reduce the overhead of LBR pass-through or cancellation

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Message-ID: <59d947ae-3f6f-2efa-0d2d-3b130cb0bb5c@redhat.com>
Date:   Tue, 26 Jan 2021 10:27:52 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Like Xu <like.xu@...ux.intel.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>
Cc:     Ingo Molnar <mingo@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Borislav Petkov <bp@...en8.de>,
        "H . Peter Anvin" <hpa@...or.com>, ak@...ux.intel.com,
        wei.w.wang@...el.com, kan.liang@...el.com, x86@...nel.org,
        kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RESEND v13 07/10] KVM: vmx/pmu: Reduce the overhead of LBR
 pass-through or cancellation

On 08/01/21 02:37, Like Xu wrote:
> +
> +	/* A flag to reduce the overhead of LBR pass-through or cancellation. */
> +	bool already_passthrough;

	/* True if LBRs are marked as not intercepted in the MSR bitmap  */
	bool msr_passthrough;

>   };
>   
>   /*
>