Merge commit 'v2.6.26-rc9' into cpus4096

1 files changed, 22 insertions, 30 deletions

diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c
index 4232fd75dd20..1dcf9f3d1107 100644
--- a/virt/kvm/ioapic.c
+++ b/virt/kvm/ioapic.c
@@ -45,7 +45,7 @@
 #else
 #define ioapic_debug(fmt, arg...)
 #endif
-static void ioapic_deliver(struct kvm_ioapic *vioapic, int irq);
+static int ioapic_deliver(struct kvm_ioapic *vioapic, int irq);
 
 static unsigned long ioapic_read_indirect(struct kvm_ioapic *ioapic,
                                           unsigned long addr,
@@ -89,8 +89,8 @@ static void ioapic_service(struct kvm_ioapic *ioapic, unsigned int idx)
         pent = &ioapic->redirtbl[idx];
 
         if (!pent->fields.mask) {
-                ioapic_deliver(ioapic, idx);
-                if (pent->fields.trig_mode == IOAPIC_LEVEL_TRIG)
+                int injected = ioapic_deliver(ioapic, idx);
+                if (injected && pent->fields.trig_mode == IOAPIC_LEVEL_TRIG)
                         pent->fields.remote_irr = 1;
         }
         if (!pent->fields.trig_mode)
@@ -133,7 +133,7 @@ static void ioapic_write_indirect(struct kvm_ioapic *ioapic, u32 val)
         }
 }
 
-static void ioapic_inj_irq(struct kvm_ioapic *ioapic,
+static int ioapic_inj_irq(struct kvm_ioapic *ioapic,
                            struct kvm_vcpu *vcpu,
                            u8 vector, u8 trig_mode, u8 delivery_mode)
 {
@@ -143,7 +143,7 @@ static void ioapic_inj_irq(struct kvm_ioapic *ioapic,
         ASSERT((delivery_mode == IOAPIC_FIXED) ||
                (delivery_mode == IOAPIC_LOWEST_PRIORITY));
 
-        kvm_apic_set_irq(vcpu, vector, trig_mode);
+        return kvm_apic_set_irq(vcpu, vector, trig_mode);
 }
 
 static u32 ioapic_get_delivery_bitmask(struct kvm_ioapic *ioapic, u8 dest,
@@ -186,7 +186,7 @@ static u32 ioapic_get_delivery_bitmask(struct kvm_ioapic *ioapic, u8 dest,
         return mask;
 }
 
-static void ioapic_deliver(struct kvm_ioapic *ioapic, int irq)
+static int ioapic_deliver(struct kvm_ioapic *ioapic, int irq)
 {
         u8 dest = ioapic->redirtbl[irq].fields.dest_id;
         u8 dest_mode = ioapic->redirtbl[irq].fields.dest_mode;
@@ -195,7 +195,7 @@ static void ioapic_deliver(struct kvm_ioapic *ioapic, int irq)
         u8 trig_mode = ioapic->redirtbl[irq].fields.trig_mode;
         u32 deliver_bitmask;
         struct kvm_vcpu *vcpu;
-        int vcpu_id;
+        int vcpu_id, r = 0;
 
         ioapic_debug("dest=%x dest_mode=%x delivery_mode=%x "
                      "vector=%x trig_mode=%x\n",
@@ -204,7 +204,7 @@ static void ioapic_deliver(struct kvm_ioapic *ioapic, int irq)
         deliver_bitmask = ioapic_get_delivery_bitmask(ioapic, dest, dest_mode);
         if (!deliver_bitmask) {
                 ioapic_debug("no target on destination\n");
-                return;
+                return 0;
         }
 
         switch (delivery_mode) {
@@ -216,7 +216,7 @@ static void ioapic_deliver(struct kvm_ioapic *ioapic, int irq)
                         vcpu = ioapic->kvm->vcpus[0];
 #endif
                 if (vcpu != NULL)
-                        ioapic_inj_irq(ioapic, vcpu, vector,
+                        r = ioapic_inj_irq(ioapic, vcpu, vector,
                                        trig_mode, delivery_mode);
                 else
                         ioapic_debug("null lowest prio vcpu: "
@@ -234,7 +234,7 @@ static void ioapic_deliver(struct kvm_ioapic *ioapic, int irq)
                         deliver_bitmask &= ~(1 << vcpu_id);
                         vcpu = ioapic->kvm->vcpus[vcpu_id];
                         if (vcpu) {
-                                ioapic_inj_irq(ioapic, vcpu, vector,
+                                r = ioapic_inj_irq(ioapic, vcpu, vector,
                                                trig_mode, delivery_mode);
                         }
                 }
@@ -246,6 +246,7 @@ static void ioapic_deliver(struct kvm_ioapic *ioapic, int irq)
                        delivery_mode);
                 break;
         }
+        return r;
 }
 
 void kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level)
@@ -268,28 +269,9 @@ void kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level)
         }
 }
 
-static int get_eoi_gsi(struct kvm_ioapic *ioapic, int vector)
+static void __kvm_ioapic_update_eoi(struct kvm_ioapic *ioapic, int gsi)
 {
-        int i;
-
-        for (i = 0; i < IOAPIC_NUM_PINS; i++)
-                if (ioapic->redirtbl[i].fields.vector == vector)
-                        return i;
-        return -1;
-}
-
-void kvm_ioapic_update_eoi(struct kvm *kvm, int vector)
-{
-        struct kvm_ioapic *ioapic = kvm->arch.vioapic;
         union ioapic_redir_entry *ent;
-        int gsi;
-
-        gsi = get_eoi_gsi(ioapic, vector);
-        if (gsi == -1) {
-                printk(KERN_WARNING "Can't find redir item for %d EOI\n",
-                       vector);
-                return;
-        }
 
         ent = &ioapic->redirtbl[gsi];
         ASSERT(ent->fields.trig_mode == IOAPIC_LEVEL_TRIG);
@@ -299,6 +281,16 @@ void kvm_ioapic_update_eoi(struct kvm *kvm, int vector)
                 ioapic_deliver(ioapic, gsi);
 }
 
+void kvm_ioapic_update_eoi(struct kvm *kvm, int vector)
+{
+        struct kvm_ioapic *ioapic = kvm->arch.vioapic;
+        int i;
+
+        for (i = 0; i < IOAPIC_NUM_PINS; i++)
+                if (ioapic->redirtbl[i].fields.vector == vector)
+                        __kvm_ioapic_update_eoi(ioapic, i);
+}
+
 static int ioapic_in_range(struct kvm_io_device *this, gpa_t addr)
 {
         struct kvm_ioapic *ioapic = (struct kvm_ioapic *)this->private;