[PATCH v7 22/41] KVM: arm64: gic-v5: Clear TWI if single task running

[Sascha Bischoff]

Handle GICv5 in kvm_vcpu_should_clear_twi(). Clear TWI if there is a
single task running, and enable it otherwise. This is a sane default
for GICv5 given the current level of support.

Signed-off-by: Sascha Bischoff <sascha.bischoff at arm.com>
---
 arch/arm64/kvm/arm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 0e74e8da3e344..5514e0c4e5cfb 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -613,6 +613,9 @@ static bool kvm_vcpu_should_clear_twi(struct kvm_vcpu *vcpu)
 	if (unlikely(kvm_wfi_trap_policy != KVM_WFX_NOTRAP_SINGLE_TASK))
 		return kvm_wfi_trap_policy == KVM_WFX_NOTRAP;
 
+	if (vgic_is_v5(vcpu->kvm))
+		return single_task_running();
+
 	return single_task_running() &&
 	       vcpu->kvm->arch.vgic.vgic_model == KVM_DEV_TYPE_ARM_VGIC_V3 &&
 	       (atomic_read(&vcpu->arch.vgic_cpu.vgic_v3.its_vpe.vlpi_count) ||
-- 
2.34.1