NVMM: A full, fast and flexible virtualization stack for NetBSD

To do that, in NVMM, we also need to tell the host to associate the GPA we want to read/write with a host virtual address (HVA) in our application. Contrary to other pseudo-cross-platform kernel drivers such as VirtualBox or HAXM, NVMM is well integrated into the NetBSD kernel, and this allows us to optimize the context switches between the guests and the host, in order to avoid expensive operations in certain cases. Armed with our full virtualization stack, our flexible backends, our user-friendly virtualization API, our comprehensive assists, and our swag NVMM logo, we can now add NVMM support in whatever existing emulator we want.

Source: blog.netbsd.org