The most reliable way to build the VM base is using the OSX-KVM project on GitHub .
Some AMD cards (like the Vega series) don't reset properly when the VM shuts down. You might need the vendor-reset kernel module to fix this.
While setup is complex, the results are unmatched. You get the stability of Linux as a base OS with the ability to run a "Bare Metal" speed macOS instance. For developers who want to stay in the Linux ecosystem but need to compile iOS apps or use Final Cut Pro, this is the ultimate solution. osx-kvm-gpu-passthrough
However, it is not a "plug-and-play" process. It requires specific hardware and precise configuration of the Linux host. 1. Hardware Requirements & Compatibility
Most modern AMD cards work out of the box because Apple uses them in real Macs. Models like the are top choices. The most reliable way to build the VM
Before touching the VM, you must "isolate" the GPU so the Linux host doesn't try to use it.
Modern macOS VMs use the OpenCore bootloader. You will need to configure a config.plist that includes the necessary "arguments" to handle a passed-through GPU, such as agdpmod=pikera for certain AMD cards. While setup is complex, the results are unmatched
Use lspci -nn to find the Vendor and Device IDs for your GPU and its associated audio controller.