reproduce (this is a W=1 build):
        git remote add arm-perf https://git.kernel.org/pub/scm/linux/kernel/git/will/linux.git
        git fetch arm-perf for-next/perf
        git checkout arm-perf/for-next/perf
        b4 shazam https://lore.kernel.org/r/20250616203149.2649118-6-praan@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 block/