[PATCH 2/3] KVM: x86: VMX: set irr_pending in kvm_apic_update_irr

[Maxim Levitsky]

When the APICv is inhibited, the irr_pending optimization is used.

Therefore, when kvm_apic_update_irr sets bits in the IRR,
it must set irr_pending to true as well.

Signed-off-by: Maxim Levitsky <mlevitsk@xxxxxxxxxx>
---
 arch/x86/kvm/lapic.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index b3f57e0f0d64ae..613830ba2d8cef 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -653,8 +653,11 @@ EXPORT_SYMBOL_GPL(__kvm_apic_update_irr);
 bool kvm_apic_update_irr(struct kvm_vcpu *vcpu, u32 *pir, int *max_irr)
 {
 	struct kvm_lapic *apic = vcpu->arch.apic;
+	bool irr_updated = __kvm_apic_update_irr(pir, apic->regs, max_irr);
 
-	return __kvm_apic_update_irr(pir, apic->regs, max_irr);
+	if (unlikely(!apic->apicv_active && irr_updated))
+		apic->irr_pending = true;
+	return irr_updated;
 }
 EXPORT_SYMBOL_GPL(kvm_apic_update_irr);
 
-- 
2.26.3