arm64: KVM: Add Virtual Abort injection helper

Now that we're able to context switch the HCR_EL2.VA bit, let's introduce a helper that injects an Abort into a vcpu. Signed-off-by: Marc Zyngier <[email protected]> Signed-off-by: Christoffer Dall <[email protected]>
ambv · Sep 8, 2016 · 10cf339 · 10cf339
1 parent 44636f9
commit 10cf339
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diff --git a/arch/arm64/include/asm/kvm_emulate.h b/arch/arm64/include/asm/kvm_emulate.h
@@ -38,6 +38,7 @@ bool kvm_condition_valid32(const struct kvm_vcpu *vcpu);
 void kvm_skip_instr32(struct kvm_vcpu *vcpu, bool is_wide_instr);
 
 void kvm_inject_undefined(struct kvm_vcpu *vcpu);
+void kvm_inject_vabt(struct kvm_vcpu *vcpu);
 void kvm_inject_dabt(struct kvm_vcpu *vcpu, unsigned long addr);
 void kvm_inject_pabt(struct kvm_vcpu *vcpu, unsigned long addr);
 

diff --git a/arch/arm64/kvm/inject_fault.c b/arch/arm64/kvm/inject_fault.c
@@ -231,3 +231,15 @@ void kvm_inject_undefined(struct kvm_vcpu *vcpu)
 	else
 		inject_undef64(vcpu);
 }
+
+/**
+ * kvm_inject_vabt - inject an async abort / SError into the guest
+ * @vcpu: The VCPU to receive the exception
+ *
+ * It is assumed that this code is called from the VCPU thread and that the
+ * VCPU therefore is not currently executing guest code.
+ */
+void kvm_inject_vabt(struct kvm_vcpu *vcpu)
+{
+	vcpu_set_hcr(vcpu, vcpu_get_hcr(vcpu) | HCR_VSE);
+}