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arm/arm64: KVM: add a common vgic_queue_irq_to_lr fn 

This helps re-factor away some of the repetitive code and makes the code
flow more nicely.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
This commit is contained in:
Alex Bennée 2015-03-13 17:02:53 +00:00 committed by Christoffer Dall
parent ecccf0cc72
commit 71760950bf
1 changed files with 17 additions and 7 deletions
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24
virt/kvm/arm/vgic.c
View File

@ -950,6 +950,20 @@ static void vgic_retire_disabled_irqs(struct kvm_vcpu *vcpu)
}
}
static void vgic_queue_irq_to_lr(struct kvm_vcpu *vcpu, int irq,
int lr_nr, struct vgic_lr vlr)
{
if (vgic_dist_irq_is_pending(vcpu, irq)) {
vlr.state |= LR_STATE_PENDING;
kvm_debug("Set pending: 0x%x\n", vlr.state);
}
if (!vgic_irq_is_edge(vcpu, irq))
vlr.state |= LR_EOI_INT;
vgic_set_lr(vcpu, lr_nr, vlr);
}
/*
* Queue an interrupt to a CPU virtual interface. Return true on success,
* or false if it wasn't possible to queue it.
@ -977,8 +991,7 @@ bool vgic_queue_irq(struct kvm_vcpu *vcpu, u8 sgi_source_id, int irq)
if (vlr.source == sgi_source_id) {
kvm_debug("LR%d piggyback for IRQ%d\n", lr, vlr.irq);
BUG_ON(!test_bit(lr, vgic_cpu->lr_used));
vlr.state |= LR_STATE_PENDING;
vgic_set_lr(vcpu, lr, vlr);
vgic_queue_irq_to_lr(vcpu, irq, lr, vlr);
return true;
}
}
@ -995,11 +1008,8 @@ bool vgic_queue_irq(struct kvm_vcpu *vcpu, u8 sgi_source_id, int irq)
vlr.irq = irq;
vlr.source = sgi_source_id;
vlr.state = LR_STATE_PENDING;
if (!vgic_irq_is_edge(vcpu, irq))
vlr.state |= LR_EOI_INT;
vgic_set_lr(vcpu, lr, vlr);
vlr.state = 0;
vgic_queue_irq_to_lr(vcpu, irq, lr, vlr);
return true;
}