[PATCH] drm/ttm: WIP limit the TTM pool to 32bit CPUs

[kernel test robot]

Hi Christian,

kernel test robot noticed the following build errors:

[auto build test ERROR on drm-exynos/exynos-drm-next]
[also build test ERROR on linus/master v6.16 next-20250808]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Christian-K-nig/drm-ttm-WIP-limit-the-TTM-pool-to-32bit-CPUs/20250806-212941
base:   https://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.git exynos-drm-next
patch link:    https://lore.kernel.org/r/20250806132838.1831-1-christian.koenig%40amd.com
patch subject: [PATCH] drm/ttm: WIP limit the TTM pool to 32bit CPUs
config: um-randconfig-001-20250809 (https://download.01.org/0day-ci/archive/20250809/202508091134.xJZroqY6-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 3769ce013be2879bf0b329c14a16f5cb766f26ce)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250809/202508091134.xJZroqY6-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/202508091134.xJZroqY6-lkp@intel.com/

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

>> ERROR: modpost: "set_pages_array_wc" [drivers/gpu/drm/ttm/ttm.ko] undefined!
>> ERROR: modpost: "set_pages_array_uc" [drivers/gpu/drm/ttm/ttm.ko] undefined!
>> ERROR: modpost: "set_pages_wb" [drivers/gpu/drm/ttm/ttm.ko] undefined!
>> ERROR: modpost: "set_pages_array_wb" [drivers/gpu/drm/ttm/ttm.ko] undefined!

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