KVM: MMU: Propagate the right fault back to the guest after gva_to_gpa

[linux-block.git] / arch / x86 / kvm / x86.c

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index e4c76bf86081f00169d3e5f8fea0095810065cdb..0281d920e9edb7fcf0bc43fa7415b1f00c6ff63d 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -338,6 +338,22 @@ void kvm_inject_page_fault(struct kvm_vcpu *vcpu)
        kvm_queue_exception_e(vcpu, PF_VECTOR, error_code);
 }
 
+void kvm_propagate_fault(struct kvm_vcpu *vcpu)
+{
+       u32 nested, error;
+
+       error   = vcpu->arch.fault.error_code;
+       nested  = error &  PFERR_NESTED_MASK;
+       error   = error & ~PFERR_NESTED_MASK;
+
+       vcpu->arch.fault.error_code = error;
+
+       if (mmu_is_nested(vcpu) && !nested)
+               vcpu->arch.nested_mmu.inject_page_fault(vcpu);
+       else
+               vcpu->arch.mmu.inject_page_fault(vcpu);
+}
+
 void kvm_inject_nmi(struct kvm_vcpu *vcpu)
 {
        vcpu->arch.nmi_pending = 1;
@@ -4140,7 +4156,7 @@ static void inject_emulated_exception(struct kvm_vcpu *vcpu)
 {
        struct x86_emulate_ctxt *ctxt = &vcpu->arch.emulate_ctxt;
        if (ctxt->exception == PF_VECTOR)
-               kvm_inject_page_fault(vcpu);
+               kvm_propagate_fault(vcpu);
        else if (ctxt->error_code_valid)
                kvm_queue_exception_e(vcpu, ctxt->exception, ctxt->error_code);
        else