[Devel] [PATCH 10/11] KVM: x86: track manually whether an event has been injected

[Alexander Mikhalitsyn]

From: Paolo Bonzini <pbonzini at redhat.com>

Instead of calling kvm_event_needs_reinjection, track its
future return value in a variable.  This will be useful in
the next patch.

Signed-off-by: Paolo Bonzini <pbonzini at redhat.com>
(cherry picked from commit c6b22f59d694d0caf61aefb262d9639b3d9661d5)

Replaced vcpu->arch.interrupt.injected -> vcpu->arch.interrupt.pending

https://jira.sw.ru/browse/PSBM-139278

Signed-off-by: Alexander Mikhalitsyn <alexander.mikhalitsyn at virtuozzo.com>
---
 arch/x86/kvm/x86.c | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index e09926e02826..9cabc1c7914e 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -6625,20 +6625,26 @@ static void update_cr8_intercept(struct kvm_vcpu *vcpu)
 static int inject_pending_event(struct kvm_vcpu *vcpu)
 {
 	int r;
+	bool can_inject = true;
 
 	/* try to reinject previous events if any */
 
-	if (vcpu->arch.exception.injected)
+	if (vcpu->arch.exception.injected) {
 		kvm_x86_ops->queue_exception(vcpu);
+		can_inject = false;
+	}
 	/*
 	 * Exceptions must be injected immediately, or the exception
 	 * frame will have the address of the NMI or interrupt handler.
 	 */
 	else if (!vcpu->arch.exception.pending) {
-		if (vcpu->arch.nmi_injected)
+		if (vcpu->arch.nmi_injected) {
 			kvm_x86_ops->set_nmi(vcpu);
-		else if (vcpu->arch.interrupt.pending)
+			can_inject = false;
+		} else if (vcpu->arch.interrupt.pending) {
 			kvm_x86_ops->set_irq(vcpu);
+			can_inject = false;
+		}
 	}
 
 	/*
@@ -6674,10 +6680,11 @@ static int inject_pending_event(struct kvm_vcpu *vcpu)
 		}
 
 		kvm_x86_ops->queue_exception(vcpu);
+		can_inject = false;
 	}
 
-	/* Don't consider new event if we re-injected an event */
-	if (kvm_event_needs_reinjection(vcpu))
+	/* Finish re-injection before considering new events */
+	if (!can_inject)
 		return 0;
 
 	if (vcpu->arch.smi_pending && kvm_x86_ops->smi_allowed(vcpu, true)) {
-- 
2.36.1