[PULL 33/50] arm/arm64: KVM: Inject virtual abort when guest exits on external abort

[Christoffer Dall]

From: Marc Zyngier <marc.zyngier at arm.com>

If we spot a data abort bearing the ESR_EL2.EA bit set, we know that
this is an external abort, and that should be punished by the injection
of an abort.

Signed-off-by: Marc Zyngier <marc.zyngier at arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall at linaro.org>
---
 arch/arm/kvm/mmu.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c
index 344755d..60e0c1a 100644
--- a/arch/arm/kvm/mmu.c
+++ b/arch/arm/kvm/mmu.c
@@ -1432,6 +1432,11 @@ int kvm_handle_guest_abort(struct kvm_vcpu *vcpu, struct kvm_run *run)
 	int ret, idx;
 
 	is_iabt = kvm_vcpu_trap_is_iabt(vcpu);
+	if (unlikely(!is_iabt && kvm_vcpu_dabt_isextabt(vcpu))) {
+		kvm_inject_vabt(vcpu);
+		return 1;
+	}
+
 	fault_ipa = kvm_vcpu_get_fault_ipa(vcpu);
 
 	trace_kvm_guest_fault(*vcpu_pc(vcpu), kvm_vcpu_get_hsr(vcpu),
-- 
2.9.0