Merge tag 'please-pull-pstore' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl...

[linux-2.6-microblaze.git] / arch / x86 / kvm / ioapic.c

diff --git a/arch/x86/kvm/ioapic.c b/arch/x86/kvm/ioapic.c
index 1facfd6..9db4709 100644 (file)
--- 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