reproduce (this is a W=1 build):
        git checkout 8046d29dde17002523f94d3e6e0ebe486ce52166
        b4 shazam https://lore.kernel.org/r/20250613202315.2790592-2-jthoughton@google.com
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 olddefconfig
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash arch/x86/kvm/