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Diffstat (limited to 'virt/kvm/ioapic.c')
-rw-r--r--virt/kvm/ioapic.c21
1 files changed, 11 insertions, 10 deletions
diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c
index 4232fd75dd20..98778cb69c6e 100644
--- a/virt/kvm/ioapic.c
+++ b/virt/kvm/ioapic.c
@@ -45,7 +45,7 @@
45#else 45#else
46#define ioapic_debug(fmt, arg...) 46#define ioapic_debug(fmt, arg...)
47#endif 47#endif
48static void ioapic_deliver(struct kvm_ioapic *vioapic, int irq); 48static int ioapic_deliver(struct kvm_ioapic *vioapic, int irq);
49 49
50static unsigned long ioapic_read_indirect(struct kvm_ioapic *ioapic, 50static unsigned long ioapic_read_indirect(struct kvm_ioapic *ioapic,
51 unsigned long addr, 51 unsigned long addr,
@@ -89,8 +89,8 @@ static void ioapic_service(struct kvm_ioapic *ioapic, unsigned int idx)
89 pent = &ioapic->redirtbl[idx]; 89 pent = &ioapic->redirtbl[idx];
90 90
91 if (!pent->fields.mask) { 91 if (!pent->fields.mask) {
92 ioapic_deliver(ioapic, idx); 92 int injected = ioapic_deliver(ioapic, idx);
93 if (pent->fields.trig_mode == IOAPIC_LEVEL_TRIG) 93 if (injected && pent->fields.trig_mode == IOAPIC_LEVEL_TRIG)
94 pent->fields.remote_irr = 1; 94 pent->fields.remote_irr = 1;
95 } 95 }
96 if (!pent->fields.trig_mode) 96 if (!pent->fields.trig_mode)
@@ -133,7 +133,7 @@ static void ioapic_write_indirect(struct kvm_ioapic *ioapic, u32 val)
133 } 133 }
134} 134}
135 135
136static void ioapic_inj_irq(struct kvm_ioapic *ioapic, 136static int ioapic_inj_irq(struct kvm_ioapic *ioapic,
137 struct kvm_vcpu *vcpu, 137 struct kvm_vcpu *vcpu,
138 u8 vector, u8 trig_mode, u8 delivery_mode) 138 u8 vector, u8 trig_mode, u8 delivery_mode)
139{ 139{
@@ -143,7 +143,7 @@ static void ioapic_inj_irq(struct kvm_ioapic *ioapic,
143 ASSERT((delivery_mode == IOAPIC_FIXED) || 143 ASSERT((delivery_mode == IOAPIC_FIXED) ||
144 (delivery_mode == IOAPIC_LOWEST_PRIORITY)); 144 (delivery_mode == IOAPIC_LOWEST_PRIORITY));
145 145
146 kvm_apic_set_irq(vcpu, vector, trig_mode); 146 return kvm_apic_set_irq(vcpu, vector, trig_mode);
147} 147}
148 148
149static u32 ioapic_get_delivery_bitmask(struct kvm_ioapic *ioapic, u8 dest, 149static 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,
186 return mask; 186 return mask;
187} 187}
188 188
189static void ioapic_deliver(struct kvm_ioapic *ioapic, int irq) 189static int ioapic_deliver(struct kvm_ioapic *ioapic, int irq)
190{ 190{
191 u8 dest = ioapic->redirtbl[irq].fields.dest_id; 191 u8 dest = ioapic->redirtbl[irq].fields.dest_id;
192 u8 dest_mode = ioapic->redirtbl[irq].fields.dest_mode; 192 u8 dest_mode = ioapic->redirtbl[irq].fields.dest_mode;
@@ -195,7 +195,7 @@ static void ioapic_deliver(struct kvm_ioapic *ioapic, int irq)
195 u8 trig_mode = ioapic->redirtbl[irq].fields.trig_mode; 195 u8 trig_mode = ioapic->redirtbl[irq].fields.trig_mode;
196 u32 deliver_bitmask; 196 u32 deliver_bitmask;
197 struct kvm_vcpu *vcpu; 197 struct kvm_vcpu *vcpu;
198 int vcpu_id; 198 int vcpu_id, r = 0;
199 199
200 ioapic_debug("dest=%x dest_mode=%x delivery_mode=%x " 200 ioapic_debug("dest=%x dest_mode=%x delivery_mode=%x "
201 "vector=%x trig_mode=%x\n", 201 "vector=%x trig_mode=%x\n",
@@ -204,7 +204,7 @@ static void ioapic_deliver(struct kvm_ioapic *ioapic, int irq)
204 deliver_bitmask = ioapic_get_delivery_bitmask(ioapic, dest, dest_mode); 204 deliver_bitmask = ioapic_get_delivery_bitmask(ioapic, dest, dest_mode);
205 if (!deliver_bitmask) { 205 if (!deliver_bitmask) {
206 ioapic_debug("no target on destination\n"); 206 ioapic_debug("no target on destination\n");
207 return; 207 return 0;
208 } 208 }
209 209
210 switch (delivery_mode) { 210 switch (delivery_mode) {
@@ -216,7 +216,7 @@ static void ioapic_deliver(struct kvm_ioapic *ioapic, int irq)
216 vcpu = ioapic->kvm->vcpus[0]; 216 vcpu = ioapic->kvm->vcpus[0];
217#endif 217#endif
218 if (vcpu != NULL) 218 if (vcpu != NULL)
219 ioapic_inj_irq(ioapic, vcpu, vector, 219 r = ioapic_inj_irq(ioapic, vcpu, vector,
220 trig_mode, delivery_mode); 220 trig_mode, delivery_mode);
221 else 221 else
222 ioapic_debug("null lowest prio vcpu: " 222 ioapic_debug("null lowest prio vcpu: "
@@ -234,7 +234,7 @@ static void ioapic_deliver(struct kvm_ioapic *ioapic, int irq)
234 deliver_bitmask &= ~(1 << vcpu_id); 234 deliver_bitmask &= ~(1 << vcpu_id);
235 vcpu = ioapic->kvm->vcpus[vcpu_id]; 235 vcpu = ioapic->kvm->vcpus[vcpu_id];
236 if (vcpu) { 236 if (vcpu) {
237 ioapic_inj_irq(ioapic, vcpu, vector, 237 r = ioapic_inj_irq(ioapic, vcpu, vector,
238 trig_mode, delivery_mode); 238 trig_mode, delivery_mode);
239 } 239 }
240 } 240 }
@@ -246,6 +246,7 @@ static void ioapic_deliver(struct kvm_ioapic *ioapic, int irq)
246 delivery_mode); 246 delivery_mode);
247 break; 247 break;
248 } 248 }
249 return r;
249} 250}
250 251
251void kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level) 252void kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level)