KVM: lapic: do not set KVM_REQ_EVENT unnecessarily on PPR update

On PPR update, we set KVM_REQ_EVENT unconditionally anytime PPR is lowered.
But we can take into account IRR here already.

Reviewed-by: Roman Kagan <rkagan@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index a878e33119a397bcdef40d211ded8eb9e0abb582..457fb206647d5a371c572e3ed0cda6b609ff3bec 100644 (file)
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -607,7 +607,8 @@ static void apic_update_ppr(struct kvm_lapic *apic)
 {
        u32 ppr;
 
-       if (__apic_update_ppr(apic, &ppr))
+       if (__apic_update_ppr(apic, &ppr) &&
+           apic_has_interrupt_for_ppr(apic, ppr) != -1)
                kvm_make_request(KVM_REQ_EVENT, apic->vcpu);
 }