arm/arm64: KVM: Inject virtual abort when guest exits on external abort

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@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>

diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c
index 344755d..60e0c1a 100644 (file)
--- 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),