KVM: vmx: expose more information for KVM_INTERNAL_ERROR_DELIVERY_EV exits
This exit ended up being reported, but the currently exposed data does not provide
much of a starting point for debugging. In the reported case, the vmexit was
an EPT misconfiguration (MMIO access). Let userspace report ethe exit qualification
and, if relevant, the GPA.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index f76efad..7592a18 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -8418,9 +8418,15 @@ static int vmx_handle_exit(struct kvm_vcpu *vcpu)
exit_reason != EXIT_REASON_TASK_SWITCH)) {
vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_DELIVERY_EV;
- vcpu->run->internal.ndata = 2;
+ vcpu->run->internal.ndata = 3;
vcpu->run->internal.data[0] = vectoring_info;
vcpu->run->internal.data[1] = exit_reason;
+ vcpu->run->internal.data[2] = vcpu->arch.exit_qualification;
+ if (exit_reason == EXIT_REASON_EPT_MISCONFIG) {
+ vcpu->run->internal.ndata++;
+ vcpu->run->internal.data[3] =
+ vmcs_read64(GUEST_PHYSICAL_ADDRESS);
+ }
return 0;
}