I setup S7150x2 on Dell PowerEdge R730,Host OS is CentOS 7.6 (kvm+qemu+iommu+vfio+MxGPU-Virtualization)
I did a Windows 10 VM with OVMF+Q35+Tonga XTV GL [FirePro S7150V] and install the win10 driver, it's worked. I did a Windows 2016 VM,it's also worked.
but,the Windos 7 64-bit VM,the driver installed complete and reboot the vm, I can see the MxGPU in DeviceManager and status is ok, when I open AMD Settings ,I get a error "No AMD graphics driver is installed,or the AMD driver is not functioning properly.Pleease install the AMD driver appropriate for your AMD hardware"
I try seabios+i440FX,seabios+Q35,OVMF+i440FX,OVMF+Q35 with the windows7 vm
I try change Host OS to Ubuntu 18.04,Esxi 6.5
I try Different version driver with windows 7 win7-64bit-radeon-pro-software-adrenalin-edition-17.12.2-dec19.exe win7-64bit-radeon-pro-software-adrenalin-edition-18.q4.1-jan-16.exe win7-64bit-radeon-pro-software-enterprise-19.q2-may6.exe win7-64bit-radeon-pro-software-enterprise-19.q3.1-sep18.exe