diff options
Diffstat (limited to 'arch/x86/kvm/ioapic.c')
| -rw-r--r-- | arch/x86/kvm/ioapic.c | 30 |
1 files changed, 21 insertions, 9 deletions
diff --git a/arch/x86/kvm/ioapic.c b/arch/x86/kvm/ioapic.c index 1facfd60b04a..9db47090ead0 100644 --- a/arch/x86/kvm/ioapic.c +++ b/arch/x86/kvm/ioapic.c @@ -94,7 +94,7 @@ static unsigned long ioapic_read_indirect(struct kvm_ioapic *ioapic, static void rtc_irq_eoi_tracking_reset(struct kvm_ioapic *ioapic) { ioapic->rtc_status.pending_eoi = 0; - bitmap_zero(ioapic->rtc_status.dest_map, KVM_MAX_VCPUS); + bitmap_zero(ioapic->rtc_status.dest_map.map, KVM_MAX_VCPUS); } static void kvm_rtc_eoi_tracking_restore_all(struct kvm_ioapic *ioapic); @@ -117,16 +117,16 @@ static void __rtc_irq_eoi_tracking_restore_one(struct kvm_vcpu *vcpu) return; new_val = kvm_apic_pending_eoi(vcpu, e->fields.vector); - old_val = test_bit(vcpu->vcpu_id, ioapic->rtc_status.dest_map); + old_val = test_bit(vcpu->vcpu_id, ioapic->rtc_status.dest_map.map); if (new_val == old_val) return; if (new_val) { - __set_bit(vcpu->vcpu_id, ioapic->rtc_status.dest_map); + __set_bit(vcpu->vcpu_id, ioapic->rtc_status.dest_map.map); ioapic->rtc_status.pending_eoi++; } else { - __clear_bit(vcpu->vcpu_id, ioapic->rtc_status.dest_map); + __clear_bit(vcpu->vcpu_id, ioapic->rtc_status.dest_map.map); ioapic->rtc_status.pending_eoi--; rtc_status_pending_eoi_check_valid(ioapic); } @@ -156,7 +156,8 @@ static void kvm_rtc_eoi_tracking_restore_all(struct kvm_ioapic *ioapic) static void rtc_irq_eoi(struct kvm_ioapic *ioapic, struct kvm_vcpu *vcpu) { - if (test_and_clear_bit(vcpu->vcpu_id, ioapic->rtc_status.dest_map)) { + if (test_and_clear_bit(vcpu->vcpu_id, + ioapic->rtc_status.dest_map.map)) { --ioapic->rtc_status.pending_eoi; rtc_status_pending_eoi_check_valid(ioapic); } @@ -236,10 +237,17 @@ static void kvm_ioapic_inject_all(struct kvm_ioapic *ioapic, unsigned long irr) void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, ulong *ioapic_handled_vectors) { struct kvm_ioapic *ioapic = vcpu->kvm->arch.vioapic; + struct dest_map *dest_map = &ioapic->rtc_status.dest_map; union kvm_ioapic_redirect_entry *e; int index; spin_lock(&ioapic->lock); + + /* Make sure we see any missing RTC EOI */ + if (test_bit(vcpu->vcpu_id, dest_map->map)) + __set_bit(dest_map->vectors[vcpu->vcpu_id], + ioapic_handled_vectors); + for (index = 0; index < IOAPIC_NUM_PINS; index++) { e = &ioapic->redirtbl[index]; if (e->fields.trig_mode == IOAPIC_LEVEL_TRIG || @@ -346,7 +354,7 @@ static int ioapic_service(struct kvm_ioapic *ioapic, int irq, bool line_status) */ BUG_ON(ioapic->rtc_status.pending_eoi != 0); ret = kvm_irq_delivery_to_apic(ioapic->kvm, NULL, &irqe, - ioapic->rtc_status.dest_map); + &ioapic->rtc_status.dest_map); ioapic->rtc_status.pending_eoi = (ret < 0 ? 0 : ret); } else ret = kvm_irq_delivery_to_apic(ioapic->kvm, NULL, &irqe, NULL); @@ -407,8 +415,14 @@ static void kvm_ioapic_eoi_inject_work(struct work_struct *work) static void __kvm_ioapic_update_eoi(struct kvm_vcpu *vcpu, struct kvm_ioapic *ioapic, int vector, int trigger_mode) { - int i; + struct dest_map *dest_map = &ioapic->rtc_status.dest_map; struct kvm_lapic *apic = vcpu->arch.apic; + int i; + + /* RTC special handling */ + if (test_bit(vcpu->vcpu_id, dest_map->map) && + vector == dest_map->vectors[vcpu->vcpu_id]) + rtc_irq_eoi(ioapic, vcpu); for (i = 0; i < IOAPIC_NUM_PINS; i++) { union kvm_ioapic_redirect_entry *ent = &ioapic->redirtbl[i]; @@ -416,8 +430,6 @@ static void __kvm_ioapic_update_eoi(struct kvm_vcpu *vcpu, if (ent->fields.vector != vector) continue; - if (i == RTC_GSI) - rtc_irq_eoi(ioapic, vcpu); /* * We are dropping lock while calling ack notifiers because ack * notifier callbacks for assigned devices call into IOAPIC |