For ironing out the OpenGL 4.4+ support within their VMWGFX virtual graphics driver stack and/or for starting out work on bringing up Vulkan support to guest VMs running VMware virtualization products, their longtime graphics driver team is working on emulated coherent graphics memory support…

Source: Phoronix – VMware Working On Emulated Coherent Graphics Memory – Needed For GL 4.4 / Vulkan