From: Paolo Bonzini <pbonzini@redhat.com>
Date: Sun, 18 Dec 2016 12:54:58 +0000 (+0100)
Subject: KVM: lapic: do not set KVM_REQ_EVENT unnecessarily on PPR update
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=26fbbee5815e9352187ac18f0aa53534f62567ff;p=openwrt%2Fstaging%2Fblogic.git

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 a878e33119a3..457fb206647d 100644
--- 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);
 }