reproduce (this is a W=1 build): git remote add herbert-cryptodev-2.6 https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git git fetch herbert-cryptodev-2.6 master git checkout herbert-cryptodev-2.6/master b4 shazam https://lore.kernel.org/r/20241011155430.43450-6-hare@kernel.org # 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 drivers/nvme/host/ drivers/nvme/target/