Hello Hongbo,
Was thinking if we can leave my coffelake setup for further debugging of GVT related issues. That said I also have access to following intel NUC of course different processor family than coffelake
https://ark.intel.com/content/www/us/en/ark/products/130393/intel-nuc-kit-nuc7i7dnhe.html
Can we setup following configuration on intel NUC (NUC7i7DNHE)
1. SOS (Ubuntu 18.04) + Windows (Win10 LTS)
2. GVT-d (GPU passthrough) to Guest Windows.

Let me know if you need further details for the Intel NUC that I have..

Thanks again for helping ..