KVM: vmx: expose more information for KVM_INTERNAL_ERROR_DELIVERY_EV exits (70bcd708) · Commits · 戴 / test

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>

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;
		}

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