linux-kernel - Re: [PATCH 3/4] KVM: x86: Clean up directed yield API for "has pending interrupt"

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Date: Thu, 11 Jan 2024 20:49:45 +0800
From: Yuan Yao <yuan.yao@...ux.intel.com>
To: Sean Christopherson <seanjc@...gle.com>
Cc: Paolo Bonzini <pbonzini@...hat.com>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org, Like Xu <like.xu.linux@...il.com>
Subject: Re: [PATCH 3/4] KVM: x86: Clean up directed yield API for "has
 pending interrupt"

On Tue, Jan 09, 2024 at 04:39:37PM -0800, Sean Christopherson wrote:
> Directly return the boolean result of whether or not a vCPU has a pending
> interrupt instead of effectively doing:
>
>   if (true)
> 	return true;
>
>   return false;
>
> Signed-off-by: Sean Christopherson <seanjc@...gle.com>

Reviewed-by: Yuan Yao <yuan.yao@...el.com>

> ---
>  arch/x86/kvm/x86.c | 7 ++-----
>  1 file changed, 2 insertions(+), 5 deletions(-)
>
> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> index 77494f9c8d49..b7996a75d9a3 100644
> --- a/arch/x86/kvm/x86.c
> +++ b/arch/x86/kvm/x86.c
> @@ -13083,11 +13083,8 @@ int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
>
>  bool kvm_arch_dy_has_pending_interrupt(struct kvm_vcpu *vcpu)
>  {
> -	if (kvm_vcpu_apicv_active(vcpu) &&
> -	    static_call(kvm_x86_dy_apicv_has_pending_interrupt)(vcpu))
> -		return true;
> -
> -	return false;
> +	return kvm_vcpu_apicv_active(vcpu) &&
> +	       static_call(kvm_x86_dy_apicv_has_pending_interrupt)(vcpu);
>  }
>
>  bool kvm_arch_vcpu_preempted_in_kernel(struct kvm_vcpu *vcpu)
> --
> 2.43.0.472.g3155946c3a-goog
>
>