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Commit 70bcd708 authored by Paolo Bonzini's avatar Paolo Bonzini
Browse files

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: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent b49defe8

arch/x86/kvm/vmx.c

+7 −1
Original line number Diff line number Diff line
@@ -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;

	}