tree: git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git kvm-trng head: ce24e6d7812bdc252275c33141fef8d8ec065b9c commit: 34579a08c08ed8e3b352e31e1d5db7ba665e6db6 [6/8] arm64: random: use hyp entropy under pkvm config: arm64-randconfig-c003-20210323 (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git/commit/?id... git remote add ardb git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git git fetch --no-tags ardb kvm-trng git checkout 34579a08c08ed8e3b352e31e1d5db7ba665e6db6 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): aarch64-linux-ld: drivers/char/random.o:(__jump_table+0x88): undefined reference to `kvm_protected_mode_initialized' aarch64-linux-ld: drivers/char/random.o:(__jump_table+0xe8): undefined reference to `kvm_protected_mode_initialized' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org