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-rw-r--r--virt/kvm/arm/arch_timer.c29
1 files changed, 22 insertions, 7 deletions
diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c
index 98c95f2fcba4..76e38d231e99 100644
--- a/virt/kvm/arm/arch_timer.c
+++ b/virt/kvm/arm/arch_timer.c
@@ -64,10 +64,10 @@ static void kvm_timer_inject_irq(struct kvm_vcpu *vcpu)
int ret;
struct arch_timer_cpu *timer = &vcpu->arch.timer_cpu;
- timer->cntv_ctl |= ARCH_TIMER_CTRL_IT_MASK;
- ret = kvm_vgic_inject_irq(vcpu->kvm, vcpu->vcpu_id,
- timer->irq->irq,
- timer->irq->level);
+ kvm_vgic_set_phys_irq_active(timer->map, true);
+ ret = kvm_vgic_inject_mapped_irq(vcpu->kvm, vcpu->vcpu_id,
+ timer->map,
+ timer->irq->level);
WARN_ON(ret);
}
@@ -117,7 +117,8 @@ bool kvm_timer_should_fire(struct kvm_vcpu *vcpu)
cycle_t cval, now;
if ((timer->cntv_ctl & ARCH_TIMER_CTRL_IT_MASK) ||
- !(timer->cntv_ctl & ARCH_TIMER_CTRL_ENABLE))
+ !(timer->cntv_ctl & ARCH_TIMER_CTRL_ENABLE) ||
+ kvm_vgic_get_phys_irq_active(timer->map))
return false;
cval = timer->cntv_cval;
@@ -184,10 +185,11 @@ void kvm_timer_sync_hwstate(struct kvm_vcpu *vcpu)
timer_arm(timer, ns);
}
-void kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu,
- const struct kvm_irq_level *irq)
+int kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu,
+ const struct kvm_irq_level *irq)
{
struct arch_timer_cpu *timer = &vcpu->arch.timer_cpu;
+ struct irq_phys_map *map;
/*
* The vcpu timer irq number cannot be determined in
@@ -196,6 +198,17 @@ void kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu,
* vcpu timer irq number when the vcpu is reset.
*/
timer->irq = irq;
+
+ /*
+ * Tell the VGIC that the virtual interrupt is tied to a
+ * physical interrupt. We do that once per VCPU.
+ */
+ map = kvm_vgic_map_phys_irq(vcpu, irq->irq, host_vtimer_irq);
+ if (WARN_ON(IS_ERR(map)))
+ return PTR_ERR(map);
+
+ timer->map = map;
+ return 0;
}
void kvm_timer_vcpu_init(struct kvm_vcpu *vcpu)
@@ -335,6 +348,8 @@ void kvm_timer_vcpu_terminate(struct kvm_vcpu *vcpu)
struct arch_timer_cpu *timer = &vcpu->arch.timer_cpu;
timer_disarm(timer);
+ if (timer->map)
+ kvm_vgic_unmap_phys_irq(vcpu, timer->map);
}
void kvm_timer_enable(struct kvm *kvm)