diff options
Diffstat (limited to 'arch/powerpc/kvm/book3s.c')
| -rw-r--r-- | arch/powerpc/kvm/book3s.c | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c index 5833df7e8ccc..e316847c08c0 100644 --- a/arch/powerpc/kvm/book3s.c +++ b/arch/powerpc/kvm/book3s.c @@ -186,6 +186,7 @@ static int kvmppc_book3s_vec2irqprio(unsigned int vec) case 0x400: prio = BOOK3S_IRQPRIO_INST_STORAGE; break; case 0x480: prio = BOOK3S_IRQPRIO_INST_SEGMENT; break; case 0x500: prio = BOOK3S_IRQPRIO_EXTERNAL; break; + case 0x501: prio = BOOK3S_IRQPRIO_EXTERNAL_LEVEL; break; case 0x600: prio = BOOK3S_IRQPRIO_ALIGNMENT; break; case 0x700: prio = BOOK3S_IRQPRIO_PROGRAM; break; case 0x800: prio = BOOK3S_IRQPRIO_FP_UNAVAIL; break; @@ -246,13 +247,19 @@ void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu) void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) { - kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL); + unsigned int vec = BOOK3S_INTERRUPT_EXTERNAL; + + if (irq->irq == KVM_INTERRUPT_SET_LEVEL) + vec = BOOK3S_INTERRUPT_EXTERNAL_LEVEL; + + kvmppc_book3s_queue_irqprio(vcpu, vec); } void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) { kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL); + kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL_LEVEL); } int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu, unsigned int priority) @@ -281,6 +288,7 @@ int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu, unsigned int priority) vec = BOOK3S_INTERRUPT_DECREMENTER; break; case BOOK3S_IRQPRIO_EXTERNAL: + case BOOK3S_IRQPRIO_EXTERNAL_LEVEL: deliver = (vcpu->arch.shared->msr & MSR_EE) && !crit; vec = BOOK3S_INTERRUPT_EXTERNAL; break; @@ -343,6 +351,23 @@ int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu, unsigned int priority) return deliver; } +/* + * This function determines if an irqprio should be cleared once issued. + */ +static bool clear_irqprio(struct kvm_vcpu *vcpu, unsigned int priority) +{ + switch (priority) { + case BOOK3S_IRQPRIO_DECREMENTER: + /* DEC interrupts get cleared by mtdec */ + return false; + case BOOK3S_IRQPRIO_EXTERNAL_LEVEL: + /* External interrupts get cleared by userspace */ + return false; + } + + return true; +} + void kvmppc_core_deliver_interrupts(struct kvm_vcpu *vcpu) { unsigned long *pending = &vcpu->arch.pending_exceptions; @@ -356,8 +381,7 @@ void kvmppc_core_deliver_interrupts(struct kvm_vcpu *vcpu) priority = __ffs(*pending); while (priority < BOOK3S_IRQPRIO_MAX) { if (kvmppc_book3s_irqprio_deliver(vcpu, priority) && - (priority != BOOK3S_IRQPRIO_DECREMENTER)) { - /* DEC interrupts get cleared by mtdec */ + clear_irqprio(vcpu, priority)) { clear_bit(priority, &vcpu->arch.pending_exceptions); break; } |