linux-kernel - Re: [PATCH] KVM: apic: remove unused function apic_lvt

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Date:   Mon, 17 Feb 2020 18:13:38 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Vitaly Kuznetsov <vkuznets@...hat.com>,
        Krish Sadhukhan <krish.sadhukhan@...cle.com>,
        linmiaohe <linmiaohe@...wei.com>
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org, x86@...nel.org,
        rkrcmar@...hat.com, sean.j.christopherson@...el.com,
        wanpengli@...cent.com, jmattson@...gle.com, joro@...tes.org,
        tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, hpa@...or.com
Subject: Re: [PATCH] KVM: apic: remove unused function apic_lvt_vector()

On 17/02/20 18:02, Vitaly Kuznetsov wrote:
> 
> Also, apic_lvt_enabled() is only used once with APIC_LVTT as the second
> argument so I'd suggest we also do:
> 
> diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
> index afcd30d44cbb..d85463ff4a6f 100644
> --- a/arch/x86/kvm/lapic.c
> +++ b/arch/x86/kvm/lapic.c
> @@ -289,14 +289,14 @@ static inline void kvm_apic_set_x2apic_id(struct kvm_lapic *apic, u32 id)
>         recalculate_apic_map(apic->vcpu->kvm);
>  }
>  
> -static inline int apic_lvt_enabled(struct kvm_lapic *apic, int lvt_type)
> +static inline int apic_lvtt_enabled(struct kvm_lapic *apic)
>  {
> -       return !(kvm_lapic_get_reg(apic, lvt_type) & APIC_LVT_MASKED);
> +       return !(kvm_lapic_get_reg(apic, APIC_LVTT) & APIC_LVT_MASKED);
>  }
>  
> -static inline int apic_lvt_vector(struct kvm_lapic *apic, int lvt_type)
> +static inline int apic_lvtt_vector(struct kvm_lapic *apic)
>  {
> -       return kvm_lapic_get_reg(apic, lvt_type) & APIC_VECTOR_MASK;
> +       return kvm_lapic_get_reg(apic, APIC_LVTT) & APIC_VECTOR_MASK;
>  }
> 
> in addition to the above.
> 
> -- Vitaly

Sounds good.

Paolo