1 files changed, 13 insertions, 5 deletions

diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 77d8c0f4817..413f8973a85 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -5,7 +5,7 @@
  * Copyright (C) 2006 Qumranet, Inc.
  * Copyright (C) 2007 Novell
  * Copyright (C) 2007 Intel
- * Copyright 2009 Red Hat, Inc. and/or its affilates.
+ * Copyright 2009 Red Hat, Inc. and/or its affiliates.
  *
  * Authors:
  *   Dor Laor <dor.laor@qumranet.com>
@@ -259,9 +259,10 @@ static inline int apic_find_highest_isr(struct kvm_lapic *apic)
 
 static void apic_update_ppr(struct kvm_lapic *apic)
 {
-        u32 tpr, isrv, ppr;
+        u32 tpr, isrv, ppr, old_ppr;
         int isr;
 
+        old_ppr = apic_get_reg(apic, APIC_PROCPRI);
         tpr = apic_get_reg(apic, APIC_TASKPRI);
         isr = apic_find_highest_isr(apic);
         isrv = (isr != -1) ? isr : 0;
@@ -274,7 +275,10 @@ static void apic_update_ppr(struct kvm_lapic *apic)
         apic_debug("vlapic %p, ppr 0x%x, isr 0x%x, isrv 0x%x",
                    apic, ppr, isr, isrv);
 
-        apic_set_reg(apic, APIC_PROCPRI, ppr);
+        if (old_ppr != ppr) {
+                apic_set_reg(apic, APIC_PROCPRI, ppr);
+                kvm_make_request(KVM_REQ_EVENT, apic->vcpu);
+        }
 }
 
 static void apic_set_tpr(struct kvm_lapic *apic, u32 tpr)
@@ -391,6 +395,7 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode,
                         break;
                 }
 
+                kvm_make_request(KVM_REQ_EVENT, vcpu);
                 kvm_vcpu_kick(vcpu);
                 break;
 
@@ -416,6 +421,7 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode,
                                        "INIT on a runnable vcpu %d\n",
                                        vcpu->vcpu_id);
                         vcpu->arch.mp_state = KVM_MP_STATE_INIT_RECEIVED;
+                        kvm_make_request(KVM_REQ_EVENT, vcpu);
                         kvm_vcpu_kick(vcpu);
                 } else {
                         apic_debug("Ignoring de-assert INIT to vcpu %d\n",
@@ -430,6 +436,7 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode,
                         result = 1;
                         vcpu->arch.sipi_vector = vector;
                         vcpu->arch.mp_state = KVM_MP_STATE_SIPI_RECEIVED;
+                        kvm_make_request(KVM_REQ_EVENT, vcpu);
                         kvm_vcpu_kick(vcpu);
                 }
                 break;
@@ -475,6 +482,7 @@ static void apic_set_eoi(struct kvm_lapic *apic)
                 trigger_mode = IOAPIC_EDGE_TRIG;
         if (!(apic_get_reg(apic, APIC_SPIV) & APIC_SPIV_DIRECTED_EOI))
                 kvm_ioapic_update_eoi(apic->vcpu->kvm, vector, trigger_mode);
+        kvm_make_request(KVM_REQ_EVENT, apic->vcpu);
 }
 
 static void apic_send_ipi(struct kvm_lapic *apic)
@@ -1056,14 +1064,13 @@ int kvm_create_lapic(struct kvm_vcpu *vcpu)
 
         vcpu->arch.apic = apic;
 
-        apic->regs_page = alloc_page(GFP_KERNEL);
+        apic->regs_page = alloc_page(GFP_KERNEL|__GFP_ZERO);
         if (apic->regs_page == NULL) {
                 printk(KERN_ERR "malloc apic regs error for vcpu %x\n",
                        vcpu->vcpu_id);
                 goto nomem_free_apic;
         }
         apic->regs = page_address(apic->regs_page);
-        memset(apic->regs, 0, PAGE_SIZE);
         apic->vcpu = vcpu;
 
         hrtimer_init(&apic->lapic_timer.timer, CLOCK_MONOTONIC,
@@ -1152,6 +1159,7 @@ void kvm_apic_post_state_restore(struct kvm_vcpu *vcpu)
         update_divide_count(apic);
         start_apic_timer(apic);
         apic->irr_pending = true;
+        kvm_make_request(KVM_REQ_EVENT, vcpu);
 }
 
 void __kvm_migrate_apic_timer(struct kvm_vcpu *vcpu)