[PATCH 17/19] arm/arm64: KVM: Inject virtual abort when guest exits on external abort

Marc Zyngier
2016-09-06T13:02:40Z

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 a the injection
of an abort.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
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 bda27b6..6827b54 100644
--- a/arch/arm/kvm/mmu.c
+++ b/arch/arm/kvm/mmu.c
@@ -1434,6 +1434,11 @@ 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),
--
2.1.4