[seL4] AMD-V Support

I found "Your host machine has to have a CPU that supports Vt-x virtualization (for Intel CPUs), or AMD-V (for AMD CPUs, but that wasn’t tested)" at https://docs.sel4.systems/projects/camkes-vm/. In context, my understanding is that seL4 should work with AMD-V but it doesn't work on my AMD system. I also do not see any mention of it anywhere else -- not even in the source (could not find amd-v counter part to vtx in grep search of source). Noting that it has not been tested, could this be a build configuration problem or has support not actually been implemented? ...or am I missing something?