Hi, nothing terrible, but I would like to resolve the question. It takes some reconstruction, which goes right here: 0. there is kernel tree in /usr/src/linux-1 1. mv /usr/src/linux-1 /usr/src/linux-1-patched 2. ln -s /usr/src/linux /usr/src/linux-1-patched 3. cd /usr/src/linux-1-patched 4. patch -p1 <x.patch 5. make mrproper 6. make menuconfig 7. make 8. make modules_install 9. cp arch/x86.../bzImage ... 10. cd /path/to/loop-aes 11. make clean 12. make LINUX_SRC=/usr/src/linux-1-patched and this one gives me a bunch of errors, which complain about undefined things and mention /usr/src/linux-1! How so? - Linux-crypto: cryptography in and on the Linux system Archive: http://mail.nl.linux.org/linux-crypto/