title: How to enable CONFIG_ARCH_USE_QUEUED_SPINLOCKS when compiling kernel for aarch64?
body: <p>I'm compiling kernel of Centos 7.6.1810 for Arm. The kernel version is 4.14.0-115.el7a.0.1.aarch64.
  I download the source file kernel-alt-4.14.0-115.el7a.0.1.src.rpm.</p>
  <p>I wanna to compile a new kernel with different configuration from that of original kernel, and keep the version the same.
  So I change the value of EXTRAVERSION in Makefile to '-115.el7a.0.1.aarch64'.
  During installing the new kernel, I found there are warnings <code>depmod: WARNING: /lib/modules/4.14.0-115.el7a.0.1.aarch64/extra/iBMA_driver/host_kbox_drv.ko needs unknown symbol queued_spin_lock_slowpath</code>.</p>
  <p>When I install some drivers there are also warnings like this.</p>
  <p>In compiling directory there is Module.symvers and I did not find symbol queued_spin_lock_slowpath in it.</p>
  <p>But in the file /boot/symvers-4.14.0-115.el7a.0.1.aarch64.gz, there is queued_spin_lock_slowpath.</p>
  <p>Why there is not symbol queued_spin_lock_slowpath  in the kernel  I compiled and it's in the original kernel of the same version?</p>
  <p>How can I fix it?</p>