diff options
Diffstat (limited to 'arch/x86/kvm/lapic.c')
| -rw-r--r-- | arch/x86/kvm/lapic.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index 77d8c0f4817d..413f8973a855 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) |