[PATCH v7 07/20] arm/arm64: KVM: dont rely on a valid GICH base address

[Andre Przywara]

To check whether the vGIC was already initialized, we currently check
the GICH base address for not being NULL. Since with GICv3 we may
get along without this address, lets use the irqchip_in_kernel()
function to detect an already initialized vGIC.

Signed-off-by: Andre Przywara <andre.przywara at arm.com>
Acked-by: Christoffer Dall <christoffer.dall at linaro.org>
Acked-by: Marc Zyngier <marc.zyngier at arm.com>
---
Changelog v6...v7:
 (none)

Changelog v5...v6:
 (add Acked-by)

Changelog v4...v5:
 (none)

Changelog v3...v4:
 (add Acked-by)

 virt/kvm/arm/vgic.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
index 69f6e7a..1c3b75e 100644
--- a/virt/kvm/arm/vgic.c
+++ b/virt/kvm/arm/vgic.c
@@ -2094,7 +2094,7 @@ int kvm_vgic_create(struct kvm *kvm, u32 type)
 
 	mutex_lock(&kvm->lock);
 
-	if (kvm->arch.vgic.vctrl_base) {
+	if (irqchip_in_kernel(kvm)) {
 		ret = -EEXIST;
 		goto out;
 	}
-- 
1.7.9.5