Hi "Thomas,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on drm-tip/drm-tip]
[cannot apply to drm-intel/for-linux-next drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next linus/master drm/drm-next v5.13-rc3 next-20210528]
[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]

url:    https://github.com/0day-ci/linux/commits/Thomas-Hellstr-m/Move-LMEM-VRAM-management-over-to-TTM/20210528-185923
base:   git://anongit.freedesktop.org/drm/drm-tip drm-tip
config: arm-randconfig-r015-20210530 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project bc6799f2f79f0ae87e9f1ebf9d25ba799fbd25a9)
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
        # install arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://github.com/0day-ci/linux/commit/3c813341ece14cf8144672b0645f790d394a93fb
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Thomas-Hellstr-m/Move-LMEM-VRAM-management-over-to-TTM/20210528-185923
        git checkout 3c813341ece14cf8144672b0645f790d394a93fb
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> drivers/gpu/drm/drm_cache.c:316:54: error: use of undeclared identifier 'has_movntdqa'
           if (IS_ENABLED(CONFIG_X86) && static_branch_likely(&has_movntdqa)) {
                                                               ^
>> drivers/gpu/drm/drm_cache.c:316:54: error: use of undeclared identifier 'has_movntdqa'
>> drivers/gpu/drm/drm_cache.c:316:54: error: use of undeclared identifier 'has_movntdqa'
>> drivers/gpu/drm/drm_cache.c:316:54: error: use of undeclared identifier 'has_movntdqa'
>> drivers/gpu/drm/drm_cache.c:316:32: error: invalid argument type 'void' to unary expression
           if (IS_ENABLED(CONFIG_X86) && static_branch_likely(&has_movntdqa)) {
                                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/jump_label.h:495:34: note: expanded from macro 'static_branch_likely'
   #define static_branch_likely(x)         likely_notrace(static_key_enabled(&(x)->key))
                                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/compiler.h:79:28: note: expanded from macro 'likely_notrace'
   # define likely_notrace(x)      likely(x)
                                   ^~~~~~~~~
   include/linux/compiler.h:77:38: note: expanded from macro 'likely'
   # define likely(x)      __builtin_expect(!!(x), 1)
                                             ^~~~
>> drivers/gpu/drm/drm_cache.c:317:3: error: implicit declaration of function '__drm_memcpy_from_wc' [-Werror,-Wimplicit-function-declaration]
                   __drm_memcpy_from_wc(dst->is_iomem ?
                   ^
   drivers/gpu/drm/drm_cache.c:317:3: note: did you mean 'drm_memcpy_from_wc'?
   drivers/gpu/drm/drm_cache.c:309:6: note: 'drm_memcpy_from_wc' declared here
   void drm_memcpy_from_wc(struct dma_buf_map *dst,
        ^
   6 errors generated.


vim +/has_movntdqa +316 drivers/gpu/drm/drm_cache.c

   298	
   299	/**
   300	 * drm_memcpy_from_wc - Perform the fastest available memcpy from a source
   301	 * that may be WC.
   302	 * @dst: The destination pointer
   303	 * @src: The source pointer
   304	 * @len: The size of the area o transfer in bytes
   305	 *
   306	 * Tries an arch optimized memcpy for prefetching reading out of a WC region,
   307	 * and if no such beast is available, falls back to a normal memcpy.
   308	 */
   309	void drm_memcpy_from_wc(struct dma_buf_map *dst,
   310				const struct dma_buf_map *src,
   311				unsigned long len)
   312	{
   313		if (WARN_ON(in_interrupt()))
   314			return;
   315	
 > 316		if (IS_ENABLED(CONFIG_X86) && static_branch_likely(&has_movntdqa)) {
 > 317			__drm_memcpy_from_wc(dst->is_iomem ?
   318					     (void __force *)dst->vaddr_iomem :
   319					     dst->vaddr,
   320					     src->is_iomem ?
   321					     (void const __force *)src->vaddr_iomem :
   322					     src->vaddr,
   323					     len);
   324			return;
   325		}
   326	
   327		memcpy_fallback(dst, src, len);
   328	}
   329	EXPORT_SYMBOL(drm_memcpy_from_wc);
   330	

---
0-DAY CI Kernel Test Service, Intel Corporation
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