Re: [PATCH] arm[64]/memremap: don't abuse pfn_valid() to ensure presence of linear map

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Hi Mike,

I love your patch! Yet something to improve:

[auto build test ERROR on b2d229d4ddb17db541098b83524d901257e93845]

url:    https://github.com/intel-lab-lkp/linux/commits/Mike-Rapoport/arm-64-memremap-don-t-abuse-pfn_valid-to-ensure-presence-of-linear-map/20220425-012242
base:   b2d229d4ddb17db541098b83524d901257e93845
config: arm-randconfig-r015-20220424 (https://download.01.org/0day-ci/archive/20220425/202204250429.nq0alVBK-lkp@xxxxxxxxx/config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
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
        # https://github.com/intel-lab-lkp/linux/commit/635763878be30ab45f350cdcffba3d8e71089942
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Mike-Rapoport/arm-64-memremap-don-t-abuse-pfn_valid-to-ensure-presence-of-linear-map/20220425-012242
        git checkout 635763878be30ab45f350cdcffba3d8e71089942
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

   arm-linux-gnueabi-ld: kernel/iomem.o: in function `memremap':
>> iomem.c:(.text+0x36): undefined reference to `arch_memremap_can_ram_remap'
   arm-linux-gnueabi-ld: drivers/gpu/drm/drm_gem_shmem_helper.o: in function `drm_gem_shmem_fault':
   drm_gem_shmem_helper.c:(.text+0x54): undefined reference to `vmf_insert_pfn'

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for DRM_GEM_SHMEM_HELPER
   Depends on HAS_IOMEM && DRM && MMU
   Selected by
   - DRM_SSD130X && HAS_IOMEM && DRM

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp




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