Merge branch 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6

[sfrench/cifs-2.6.git] / arch / x86 / kvm / i8254.c

diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c
index 59ebd37ad79e25b658217e02dd5b57ab38f18c21..72bd275a9b5cee632b393448e325f371610f860b 100644 (file)
--- a/arch/x86/kvm/i8254.c
+++ b/arch/x86/kvm/i8254.c
@@ -207,7 +207,7 @@ static int __pit_timer_fn(struct kvm_kpit_state *ps)
        hrtimer_add_expires_ns(&pt->timer, pt->period);
        pt->scheduled = hrtimer_get_expires_ns(&pt->timer);
        if (pt->period)
-               ps->channels[0].count_load_time = hrtimer_get_expires(&pt->timer);
+               ps->channels[0].count_load_time = ktime_get();
 
        return (pt->period == 0 ? 0 : 1);
 }
@@ -603,10 +603,29 @@ void kvm_free_pit(struct kvm *kvm)
 
 static void __inject_pit_timer_intr(struct kvm *kvm)
 {
+       struct kvm_vcpu *vcpu;
+       int i;
+
        mutex_lock(&kvm->lock);
        kvm_set_irq(kvm, kvm->arch.vpit->irq_source_id, 0, 1);
        kvm_set_irq(kvm, kvm->arch.vpit->irq_source_id, 0, 0);
        mutex_unlock(&kvm->lock);
+
+       /*
+        * Provides NMI watchdog support via Virtual Wire mode.
+        * The route is: PIT -> PIC -> LVT0 in NMI mode.
+        *
+        * Note: Our Virtual Wire implementation is simplified, only
+        * propagating PIT interrupts to all VCPUs when they have set
+        * LVT0 to NMI delivery. Other PIC interrupts are just sent to
+        * VCPU0, and only if its LVT0 is in EXTINT mode.
+        */
+       if (kvm->arch.vapics_in_nmi_mode > 0)
+               for (i = 0; i < KVM_MAX_VCPUS; ++i) {
+                       vcpu = kvm->vcpus[i];
+                       if (vcpu)
+                               kvm_apic_nmi_wd_deliver(vcpu);
+               }
 }
 
 void kvm_inject_pit_timer_irqs(struct kvm_vcpu *vcpu)