[3/4] KVM: x86: Clean up directed yield API for "has pending interrupt"

Message ID 20240110003938.490206-4-seanjc@google.com
State New
Headers
Series KVM: Clean up "preempted in-kernel" logic |

Commit Message

Sean Christopherson Jan. 10, 2024, 12:39 a.m. UTC
  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@google.com>
---
 arch/x86/kvm/x86.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)
  

Comments

Yuan Yao Jan. 11, 2024, 12:49 p.m. UTC | #1
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@google.com>

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

Patch

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)