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KVM: vmx: expose more information for KVM_INTERNAL_ERROR_DELIVERY_EV exits

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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>
This commit is contained in:
Paolo Bonzini 2017-07-05 12:38:06 +02:00
parent b49defe836
commit 70bcd708df
1 changed files with 7 additions and 1 deletions
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8
arch/x86/kvm/vmx.c
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@ -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;
}