linux-kernel - [PATCH v3 18/26] KVM: VMX: Pass desired vector instead of bool for triggering posted IRQ

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Message-Id: <20211208015236.1616697-19-seanjc@google.com>
Date:   Wed,  8 Dec 2021 01:52:28 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>, Joerg Roedel <joro@...tes.org>
Cc:     Sean Christopherson <seanjc@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Suravee Suthikulpanit <suravee.suthikulpanit@....com>,
        kvm@...r.kernel.org, iommu@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, Maxim Levitsky <mlevitsk@...hat.com>
Subject: [PATCH v3 18/26] KVM: VMX: Pass desired vector instead of bool for
 triggering posted IRQ

Refactor the posted interrupt helper to take the desired notification
vector instead of a bool so that the callers are self-documenting.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@...gle.com>
Reviewed-by: Maxim Levitsky <mlevitsk@...hat.com>
---
 arch/x86/kvm/vmx/vmx.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 0eac98589472..ff309ebe9f2c 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -3890,11 +3890,9 @@ static void vmx_msr_filter_changed(struct kvm_vcpu *vcpu)
 }
 
 static inline bool kvm_vcpu_trigger_posted_interrupt(struct kvm_vcpu *vcpu,
-						     bool nested)
+						     int pi_vec)
 {
 #ifdef CONFIG_SMP
-	int pi_vec = nested ? POSTED_INTR_NESTED_VECTOR : POSTED_INTR_VECTOR;
-
 	if (vcpu->mode == IN_GUEST_MODE) {
 		/*
 		 * The vector of interrupt to be delivered to vcpu had
@@ -3955,7 +3953,7 @@ static int vmx_deliver_nested_posted_interrupt(struct kvm_vcpu *vcpu,
 		smp_mb__after_atomic();
 
 		/* the PIR and ON have been set by L1. */
-		if (!kvm_vcpu_trigger_posted_interrupt(vcpu, true))
+		if (!kvm_vcpu_trigger_posted_interrupt(vcpu, POSTED_INTR_NESTED_VECTOR))
 			kvm_vcpu_wake_up(vcpu);
 		return 0;
 	}
@@ -3993,7 +3991,7 @@ static int vmx_deliver_posted_interrupt(struct kvm_vcpu *vcpu, int vector)
 	 * guaranteed to see PID.ON=1 and sync the PIR to IRR if triggering a
 	 * posted interrupt "fails" because vcpu->mode != IN_GUEST_MODE.
 	 */
-	if (!kvm_vcpu_trigger_posted_interrupt(vcpu, false))
+	if (!kvm_vcpu_trigger_posted_interrupt(vcpu, POSTED_INTR_VECTOR))
 		kvm_vcpu_wake_up(vcpu);
 
 	return 0;
-- 
2.34.1.400.ga245620fadb-goog