[PATCH v5 1/3] dma: improve DMA zone selection

[kernel test robot]

Hi Baruch,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 8400291e289ee6b2bf9779ff1c83a291501f017b]

url:    https://github.com/intel-lab-lkp/linux/commits/Baruch-Siach/dma-improve-DMA-zone-selection/20240803-074651
base:   8400291e289ee6b2bf9779ff1c83a291501f017b
patch link:    https://lore.kernel.org/r/5200f289af1a9b80dfd329b6ed3d54e1d4a02876.1722578375.git.baruch%40tkos.co.il
patch subject: [PATCH v5 1/3] dma: improve DMA zone selection
config: i386-randconfig-063-20240807 (https://download.01.org/0day-ci/archive/20240807/202408071931.W1GA8Ee2-lkp@intel.com/config)
compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240807/202408071931.W1GA8Ee2-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202408071931.W1GA8Ee2-lkp@intel.com/

All warnings (new ones prefixed by >>, old ones prefixed by <<):

>> WARNING: modpost: vmlinux: section mismatch in reference: __dma_direct_alloc_pages+0xcc (section: .text.__dma_direct_alloc_pages) -> memblock (section: .init.data)
WARNING: modpost: vmlinux: section mismatch in reference: __dma_direct_alloc_pages+0xd2 (section: .text.__dma_direct_alloc_pages) -> memblock (section: .init.data)
WARNING: modpost: vmlinux: section mismatch in reference: swiotlb_alloc_pool+0xa0 (section: .text.swiotlb_alloc_pool) -> memblock (section: .init.data)
WARNING: modpost: vmlinux: section mismatch in reference: swiotlb_alloc_pool+0xa6 (section: .text.swiotlb_alloc_pool) -> memblock (section: .init.data)
WARNING: modpost: missing MODULE_DESCRIPTION() in kernel/bpf/preload/bpf_preload.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/devfreq/governor_userspace.o

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki