reproduce (this is a W=1 build): git remote add acpi https://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux.git git fetch acpi next git checkout acpi/next b4 shazam https://lore.kernel.org/r/20250211132741.99944-1-darcari@redhat.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 drivers/idle/