diff options
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/ioapic.c | 19 | ||||
| -rw-r--r-- | virt/kvm/ioapic.h | 4 | ||||
| -rw-r--r-- | virt/kvm/irq_comm.c | 31 |
3 files changed, 23 insertions, 31 deletions
diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c index 26fd54dc459..ef61d529a6c 100644 --- a/virt/kvm/ioapic.c +++ b/virt/kvm/ioapic.c @@ -191,7 +191,8 @@ static int ioapic_deliver(struct kvm_ioapic *ioapic, int irq) return kvm_irq_delivery_to_apic(ioapic->kvm, NULL, &irqe); } -int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level) +int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int irq_source_id, + int level) { u32 old_irr; u32 mask = 1 << irq; @@ -201,9 +202,11 @@ int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level) spin_lock(&ioapic->lock); old_irr = ioapic->irr; if (irq >= 0 && irq < IOAPIC_NUM_PINS) { + int irq_level = __kvm_irq_line_state(&ioapic->irq_states[irq], + irq_source_id, level); entry = ioapic->redirtbl[irq]; - level ^= entry.fields.polarity; - if (!level) + irq_level ^= entry.fields.polarity; + if (!irq_level) ioapic->irr &= ~mask; else { int edge = (entry.fields.trig_mode == IOAPIC_EDGE_TRIG); @@ -221,6 +224,16 @@ int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level) return ret; } +void kvm_ioapic_clear_all(struct kvm_ioapic *ioapic, int irq_source_id) +{ + int i; + + spin_lock(&ioapic->lock); + for (i = 0; i < KVM_IOAPIC_NUM_PINS; i++) + __clear_bit(irq_source_id, &ioapic->irq_states[i]); + spin_unlock(&ioapic->lock); +} + static void __kvm_ioapic_update_eoi(struct kvm_ioapic *ioapic, int vector, int trigger_mode) { diff --git a/virt/kvm/ioapic.h b/virt/kvm/ioapic.h index 32872a09b63..a30abfe6ed1 100644 --- a/virt/kvm/ioapic.h +++ b/virt/kvm/ioapic.h @@ -74,7 +74,9 @@ void kvm_ioapic_update_eoi(struct kvm *kvm, int vector, int trigger_mode); bool kvm_ioapic_handles_vector(struct kvm *kvm, int vector); int kvm_ioapic_init(struct kvm *kvm); void kvm_ioapic_destroy(struct kvm *kvm); -int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level); +int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int irq_source_id, + int level); +void kvm_ioapic_clear_all(struct kvm_ioapic *ioapic, int irq_source_id); void kvm_ioapic_reset(struct kvm_ioapic *ioapic); int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src, struct kvm_lapic_irq *irq); diff --git a/virt/kvm/irq_comm.c b/virt/kvm/irq_comm.c index a6a0365475e..cc59c68da03 100644 --- a/virt/kvm/irq_comm.c +++ b/virt/kvm/irq_comm.c @@ -33,26 +33,12 @@ #include "ioapic.h" -static inline int kvm_irq_line_state(unsigned long *irq_state, - int irq_source_id, int level) -{ - /* Logical OR for level trig interrupt */ - if (level) - set_bit(irq_source_id, irq_state); - else - clear_bit(irq_source_id, irq_state); - - return !!(*irq_state); -} - static int kvm_set_pic_irq(struct kvm_kernel_irq_routing_entry *e, struct kvm *kvm, int irq_source_id, int level) { #ifdef CONFIG_X86 struct kvm_pic *pic = pic_irqchip(kvm); - level = kvm_irq_line_state(&pic->irq_states[e->irqchip.pin], - irq_source_id, level); - return kvm_pic_set_irq(pic, e->irqchip.pin, level); + return kvm_pic_set_irq(pic, e->irqchip.pin, irq_source_id, level); #else return -1; #endif @@ -62,10 +48,7 @@ static int kvm_set_ioapic_irq(struct kvm_kernel_irq_routing_entry *e, struct kvm *kvm, int irq_source_id, int level) { struct kvm_ioapic *ioapic = kvm->arch.vioapic; - level = kvm_irq_line_state(&ioapic->irq_states[e->irqchip.pin], - irq_source_id, level); - - return kvm_ioapic_set_irq(ioapic, e->irqchip.pin, level); + return kvm_ioapic_set_irq(ioapic, e->irqchip.pin, irq_source_id, level); } inline static bool kvm_is_dm_lowest_prio(struct kvm_lapic_irq *irq) @@ -249,8 +232,6 @@ unlock: void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id) { - int i; - ASSERT(irq_source_id != KVM_USERSPACE_IRQ_SOURCE_ID); mutex_lock(&kvm->irq_lock); @@ -263,14 +244,10 @@ void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id) if (!irqchip_in_kernel(kvm)) goto unlock; - for (i = 0; i < KVM_IOAPIC_NUM_PINS; i++) { - clear_bit(irq_source_id, &kvm->arch.vioapic->irq_states[i]); - if (i >= 16) - continue; + kvm_ioapic_clear_all(kvm->arch.vioapic, irq_source_id); #ifdef CONFIG_X86 - clear_bit(irq_source_id, &pic_irqchip(kvm)->irq_states[i]); + kvm_pic_clear_all(pic_irqchip(kvm), irq_source_id); #endif - } unlock: mutex_unlock(&kvm->irq_lock); } |