diff mbox

[RFC,7/7] KVM: arm/arm64: Guard kvm_vgic_map_is_active against !vgic_initialized

Message ID 20161210204712.21830-8-christoffer.dall@linaro.org
State New
Headers show

Commit Message

Christoffer Dall Dec. 10, 2016, 8:47 p.m. UTC 
If the vgic is not initialized, don't try to grab its spinlocks or
traverse its data structures.

Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>

---
 virt/kvm/arm/vgic/vgic.c | 3 +++
 1 file changed, 3 insertions(+)

-- 
2.9.0


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
diff mbox

Patch

diff --git a/virt/kvm/arm/vgic/vgic.c b/virt/kvm/arm/vgic/vgic.c
index 67d231d..a53e215 100644
--- a/virt/kvm/arm/vgic/vgic.c
+++ b/virt/kvm/arm/vgic/vgic.c
@@ -733,6 +733,9 @@  bool kvm_vgic_map_is_active(struct kvm_vcpu *vcpu, unsigned int virt_irq)
 	struct vgic_irq *irq = vgic_get_irq(vcpu->kvm, vcpu, virt_irq);
 	bool map_is_active;
 
+	if (!vgic_initialized(vcpu->kvm))
+		return false;
+
 	DEBUG_SPINLOCK_BUG_ON(!irqs_disabled());
 
 	spin_lock(&irq->irq_lock);