Re: [PATCH 3/4] iommu/sva: Support reservation of global PASIDs

[kernel test robot]

Hi Jacob,

I love your patch! Yet something to improve:

[auto build test ERROR on vkoul-dmaengine/next]
[also build test ERROR on v6.2]
[cannot apply to joro-iommu/next linus/master next-20230302]
[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/Jacob-Pan/iommu-vt-d-Implement-set-device-pasid-op-for-default-domain/20230302-085748
base:   https://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git next
patch link:    https://lore.kernel.org/r/20230302005959.2695267-4-jacob.jun.pan%40linux.intel.com
patch subject: [PATCH 3/4] iommu/sva: Support reservation of global PASIDs
config: arm64-randconfig-r013-20230302 (https://download.01.org/0day-ci/archive/20230302/202303021016.avd8l1rJ-lkp@xxxxxxxxx/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 67409911353323ca5edf2049ef0df54132fa1ca7)
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 arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://github.com/intel-lab-lkp/linux/commit/b27170369658e99a0aafd84985de0ce48c1b2539
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Jacob-Pan/iommu-vt-d-Implement-set-device-pasid-op-for-default-domain/20230302-085748
        git checkout b27170369658e99a0aafd84985de0ce48c1b2539
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/gpu/drm/exynos/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Link: https://lore.kernel.org/oe-kbuild-all/202303021016.avd8l1rJ-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

   In file included from drivers/gpu/drm/exynos/exynos_drm_dma.c:8:
>> include/linux/iommu.h:1215:1: error: expected identifier or '('
   {
   ^
   drivers/gpu/drm/exynos/exynos_drm_dma.c:54:35: warning: implicit conversion from 'unsigned long long' to 'unsigned int' changes value from 18446744073709551615 to 4294967295 [-Wconstant-conversion]
           dma_set_max_seg_size(subdrv_dev, DMA_BIT_MASK(32));
           ~~~~~~~~~~~~~~~~~~~~             ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:76:40: note: expanded from macro 'DMA_BIT_MASK'
   #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
                                          ^~~~~
   1 warning and 1 error generated.


vim +1215 include/linux/iommu.h

  1213	
  1214	static inline ioasid_t iommu_sva_reserve_pasid(ioasid_t min, ioasid_t max);
> 1215	{
  1216		return IOMMU_PASID_INVALID;
  1217	}
  1218	

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