On a VHE system, no GICv3 traps get configured when no irqchip is
present. This is not quite matching the "no GICv3" semantics that
we want to present.
Force such traps to be configured in this case.
Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
---
arch/arm64/kvm/vgic/vgic.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/kvm/vgic/vgic.c b/arch/arm64/kvm/vgic/vgic.c
index abe29c7d85d0..f50274fd5581 100644
--- a/arch/arm64/kvm/vgic/vgic.c
+++ b/arch/arm64/kvm/vgic/vgic.c
@@ -922,10 +922,13 @@ void kvm_vgic_flush_hwstate(struct kvm_vcpu *vcpu)
void kvm_vgic_load(struct kvm_vcpu *vcpu)
{
- if (unlikely(!vgic_initialized(vcpu->kvm)))
+ if (unlikely(!irqchip_in_kernel(vcpu->kvm) || !vgic_initialized(vcpu->kvm))) {
+ if (has_vhe() && static_branch_unlikely(&kvm_vgic_global_state.gicv3_cpuif))
+ __vgic_v3_activate_traps(&vcpu->arch.vgic_cpu.vgic_v3);
return;
+ }
- if (kvm_vgic_global_state.type == VGIC_V2)
+ if (!static_branch_unlikely(&kvm_vgic_global_state.gicv3_cpuif))
vgic_v2_load(vcpu);
else
vgic_v3_load(vcpu);
@@ -933,10 +936,13 @@ void kvm_vgic_load(struct kvm_vcpu *vcpu)
void kvm_vgic_put(struct kvm_vcpu *vcpu)
{
- if (unlikely(!vgic_initialized(vcpu->kvm)))
+ if (unlikely(!irqchip_in_kernel(vcpu->kvm) || !vgic_initialized(vcpu->kvm))) {
+ if (has_vhe() && static_branch_unlikely(&kvm_vgic_global_state.gicv3_cpuif))
+ __vgic_v3_deactivate_traps(&vcpu->arch.vgic_cpu.vgic_v3);
return;
+ }
- if (kvm_vgic_global_state.type == VGIC_V2)
+ if (!static_branch_unlikely(&kvm_vgic_global_state.gicv3_cpuif))
vgic_v2_put(vcpu);
else
vgic_v3_put(vcpu);
--
2.39.2
