reproduce (this is a W=1 build):
        # https://github.com/zen-kernel/zen-kernel/commit/635f87781dd8a283a8bdc5634cbac1ca9fadffc5
        git remote add zen https://github.com/zen-kernel/zen-kernel
        git fetch --no-tags zen 6.12/invlpgb
        git checkout 635f87781dd8a283a8bdc5634cbac1ca9fadffc5
        # save the config file
        make W=1 ARCH=i386 olddefconfig
        make W=1 ARCH=i386