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arm/arm64: KVM: move kvm_register_device_ops() into vGIC probing 

Currently we unconditionally register the GICv2 emulation device
during the host's KVM initialization. Since with GICv3 support we
may end up with only v2 or only v3 or both supported, we move the
registration into the GIC probing function, where we will later know
which combination is valid.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
This commit is contained in:
Andre Przywara 2014-10-26 23:17:00 +00:00 committed by Christoffer Dall
parent b26e5fdac4
commit ea2f83a7de
4 changed files with 6 additions and 3 deletions
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1
include/linux/kvm_host.h
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@ -1051,6 +1051,7 @@ void kvm_unregister_device_ops(u32 type);
extern struct kvm_device_ops kvm_mpic_ops;
extern struct kvm_device_ops kvm_xics_ops;
extern struct kvm_device_ops kvm_arm_vgic_v2_ops;
#ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT

2
virt/kvm/arm/vgic-v2.c
View File

@ -229,6 +229,8 @@ int vgic_v2_probe(struct device_node *vgic_node,
goto out_unmap;
}
kvm_register_device_ops(&kvm_arm_vgic_v2_ops, KVM_DEV_TYPE_ARM_VGIC_V2);
vgic->vcpu_base = vcpu_res.start;
kvm_info("%s@%llx IRQ%d\n", vgic_node->name,

1
virt/kvm/arm/vgic-v3.c
View File

@ -230,6 +230,7 @@ int vgic_v3_probe(struct device_node *vgic_node,
ret = -ENXIO;
goto out;
}
kvm_register_device_ops(&kvm_arm_vgic_v2_ops, KVM_DEV_TYPE_ARM_VGIC_V2);
vgic->vcpu_base = vcpu_res.start;
vgic->vctrl_base = NULL;

5
virt/kvm/arm/vgic.c
View File

@ -2564,7 +2564,7 @@ static int vgic_create(struct kvm_device *dev, u32 type)
return kvm_vgic_create(dev->kvm, type);
}
static struct kvm_device_ops kvm_arm_vgic_v2_ops = {
struct kvm_device_ops kvm_arm_vgic_v2_ops = {
.name = "kvm-arm-vgic",
.create = vgic_create,
.destroy = vgic_destroy,
@ -2643,8 +2643,7 @@ int kvm_vgic_hyp_init(void)
on_each_cpu(vgic_init_maintenance_interrupt, NULL, 1);
return kvm_register_device_ops(&kvm_arm_vgic_v2_ops,
KVM_DEV_TYPE_ARM_VGIC_V2);
return 0;
out_free_irq:
free_percpu_irq(vgic->maint_irq, kvm_get_running_vcpus());