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KVM: arm/arm64: vgic: Make vgic_irq->irq_lock a raw_spinlock

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vgic_irq->irq_lock must always be taken with interrupts disabled as
it is used in interrupt context.

For configurations such as PREEMPT_RT_FULL, this means that it should
be a raw_spinlock since RT spinlocks are interruptible.

Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
This commit is contained in:
Julien Thierry
2019-01-07 15:06:15 +00:00
committed by Christoffer Dall
parent 49a57857ae
commit 8fa3adb8c6
10 changed files with 83 additions and 84 deletions
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4
virt/kvm/arm/vgic/vgic-init.c
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@@ -171,7 +171,7 @@ static int kvm_vgic_dist_init(struct kvm *kvm, unsigned int nr_spis)
irq->intid = i + VGIC_NR_PRIVATE_IRQS;
INIT_LIST_HEAD(&irq->ap_list);
spin_lock_init(&irq->irq_lock);
raw_spin_lock_init(&irq->irq_lock);
irq->vcpu = NULL;
irq->target_vcpu = vcpu0;
kref_init(&irq->refcount);
@@ -216,7 +216,7 @@ int kvm_vgic_vcpu_init(struct kvm_vcpu *vcpu)
struct vgic_irq *irq = &vgic_cpu->private_irqs[i];
INIT_LIST_HEAD(&irq->ap_list);
spin_lock_init(&irq->irq_lock);
raw_spin_lock_init(&irq->irq_lock);
irq->intid = i;
irq->vcpu = NULL;
irq->target_vcpu = vcpu;