reproduce (this is a W=1 build):
        git checkout a27e0515592ec9ca28e0d027f42568c47b314784
        b4 shazam https://lore.kernel.org/r/20241105184333.2305744-5-jthoughton@google.com
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 olddefconfig
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/kvm/