- /* Try to inject pending interrupts when:
- * 1. Pending exists
- * 2. Last interrupt was accepted or waited for too long time*/
- if (atomic_read(&ps->pit_timer.pending) &&
- (ps->inject_pending ||
- (jiffies - ps->last_injected_time
- >= KVM_MAX_PIT_INTR_INTERVAL))) {
- ps->inject_pending = 0;
- __inject_pit_timer_intr(kvm);
- ps->last_injected_time = jiffies;
- }
- }
-}
-
-void kvm_pit_timer_intr_post(struct kvm_vcpu *vcpu, int vec)
-{
- struct kvm_arch *arch = &vcpu->kvm->arch;
- struct kvm_kpit_state *ps;
-
- if (vcpu && arch->vpit) {
- ps = &arch->vpit->pit_state;
- if (atomic_read(&ps->pit_timer.pending) &&
- (((arch->vpic->pics[0].imr & 1) == 0 &&
- arch->vpic->pics[0].irq_base == vec) ||
- (arch->vioapic->redirtbl[0].fields.vector == vec &&
- arch->vioapic->redirtbl[0].fields.mask != 1))) {
- ps->inject_pending = 1;
- atomic_dec(&ps->pit_timer.pending);
- ps->channels[0].count_load_time = ktime_get();
+ /* Try to inject pending interrupts when
+ * last one has been acked.
+ */
+ spin_lock(&ps->inject_lock);
+ if (atomic_read(&ps->pit_timer.pending) && ps->irq_ack) {
+ ps->irq_ack = 0;
+ inject = 1;