diff options
| -rw-r--r-- | arch/powerpc/include/asm/kvm_ppc.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/kvm/book3s.c | 16 | ||||
| -rw-r--r-- | arch/powerpc/kvm/booke.c | 5 | ||||
| -rw-r--r-- | arch/powerpc/kvm/emulate.c | 3 |
4 files changed, 24 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h index 269ee46ab02..abfd0c4d567 100644 --- a/arch/powerpc/include/asm/kvm_ppc.h +++ b/arch/powerpc/include/asm/kvm_ppc.h @@ -82,6 +82,7 @@ extern void kvmppc_core_deliver_interrupts(struct kvm_vcpu *vcpu); extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu); extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu); extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu); +extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu); extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq); diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c index 241795bdf34..fd3ad6c7f35 100644 --- a/arch/powerpc/kvm/book3s.c +++ b/arch/powerpc/kvm/book3s.c @@ -151,6 +151,13 @@ static int kvmppc_book3s_vec2irqprio(unsigned int vec) return prio; } +static void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu, + unsigned int vec) +{ + clear_bit(kvmppc_book3s_vec2irqprio(vec), + &vcpu->arch.pending_exceptions); +} + void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec) { vcpu->stat.queue_intr++; @@ -178,6 +185,11 @@ int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu) return test_bit(BOOK3S_INTERRUPT_DECREMENTER >> 7, &vcpu->arch.pending_exceptions); } +void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu) +{ + kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER); +} + void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) { @@ -275,7 +287,9 @@ void kvmppc_core_deliver_interrupts(struct kvm_vcpu *vcpu) #endif priority = __ffs(*pending); while (priority <= (sizeof(unsigned int) * 8)) { - if (kvmppc_book3s_irqprio_deliver(vcpu, priority)) { + if (kvmppc_book3s_irqprio_deliver(vcpu, priority) && + (priority != BOOK3S_IRQPRIO_DECREMENTER)) { + /* DEC interrupts get cleared by mtdec */ clear_bit(priority, &vcpu->arch.pending_exceptions); break; } diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 06f5a9ecc42..d8b63420acf 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -97,6 +97,11 @@ int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu) return test_bit(BOOKE_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions); } +void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu) +{ + clear_bit(BOOKE_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions); +} + void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) { diff --git a/arch/powerpc/kvm/emulate.c b/arch/powerpc/kvm/emulate.c index 4a9ac6640fa..303457b2f52 100644 --- a/arch/powerpc/kvm/emulate.c +++ b/arch/powerpc/kvm/emulate.c @@ -83,6 +83,9 @@ void kvmppc_emulate_dec(struct kvm_vcpu *vcpu) pr_debug("mtDEC: %x\n", vcpu->arch.dec); #ifdef CONFIG_PPC64 + /* mtdec lowers the interrupt line when positive. */ + kvmppc_core_dequeue_dec(vcpu); + /* POWER4+ triggers a dec interrupt if the value is < 0 */ if (vcpu->arch.dec & 0x80000000) { hrtimer_try_to_cancel(&vcpu->arch.dec_timer); |