Hi Dave,

I love your patch! Perhaps something to improve:

[auto build test WARNING on drm-tip/drm-tip]
[cannot apply to drm-intel/for-linux-next tegra-drm/drm/tegra/for-next 
linus/master drm/drm-next drm-exynos/exynos-drm-next v5.8 next-20200806]
[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/Dave-Airlie/drm-amdgpu-ttm-move-vram-gtt-mgr-allocations-to-mman/20200807-083526
base:   git://anongit.freedesktop.org/drm/drm-tip drm-tip
config: x86_64-randconfig-a004-20200805 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 
aa57cabae2fc5abc08ab3e17b45f2890fc7c9e42)
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 x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

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

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/amd/amdgpu/amdgpu_object.c:474:5: warning: format specifies 
>> type 'unsigned long long' but the argument has type 'unsigned long' 
>> [-Wformat]
                     mgr_size << PAGE_SHIFT);
                     ^~~~~~~~~~~~~~~~~~~~~~
   include/drm/drm_print.h:490:32: note: expanded from macro 'DRM_DEBUG'
           __drm_dbg(DRM_UT_CORE, fmt, ##__VA_ARGS__)
                                  ~~~    ^~~~~~~~~~~
   drivers/gpu/drm/amd/amdgpu/amdgpu_object.c:493:2: warning: Please enable 
CONFIG_MTRR and CONFIG_X86_PAT for better performance        thanks to 
write-combining [-W#warnings]
   #warning Please enable CONFIG_MTRR and CONFIG_X86_PAT for better performance 
\
    ^
   2 warnings generated.

vim +474 drivers/gpu/drm/amd/amdgpu/amdgpu_object.c

   440  
   441  /* Validate bo size is bit bigger then the request domain */
   442  static bool amdgpu_bo_validate_size(struct amdgpu_device *adev,
   443                                            unsigned long size, u32 
domain)
   444  {
   445          unsigned long mgr_size = 0;
   446          /*
   447           * If GTT is part of requested domains the check must succeed to
   448           * allow fall back to GTT
   449           */
   450          if (domain & AMDGPU_GEM_DOMAIN_GTT) {
   451                  mgr_size = 
to_gtt_mgr(ttm_manager_type(&adev->mman.bdev, TTM_PL_TT))->size;
   452  
   453                  if (size < (mgr_size << PAGE_SHIFT))
   454                          return true;
   455                  else
   456                          goto fail;
   457          }
   458  
   459          if (domain & AMDGPU_GEM_DOMAIN_VRAM) {
   460                  mgr_size = 
to_vram_mgr(ttm_manager_type(&adev->mman.bdev, TTM_PL_TT))->size;
   461  
   462                  if (size < (mgr_size << PAGE_SHIFT))
   463                          return true;
   464                  else
   465                          goto fail;
   466          }
   467  
   468  
   469          /* TODO add more domains checks, such as AMDGPU_GEM_DOMAIN_CPU 
*/
   470          return true;
   471  
   472  fail:
   473          DRM_DEBUG("BO size %lu > total memory in domain: %llu\n", size,
 > 474                    mgr_size << PAGE_SHIFT);
   475          return false;
   476  }
   477  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org

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