tree: https://gitlab.freedesktop.org/agd5f/linux.git amd-staging-drm-next head: dec2310256916626e4356af784822e02fb807cad commit: 6587dfd22008fbe714f3ca2d6a318140e2e1d6ce [1868/1993] drm/amdgpu: pre-map device buffer as cached for A+A config config: s390-randconfig-r015-20210309 (attached as .config) compiler: s390-linux-gcc (GCC) 9.3.0 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 git remote add agd5f https://gitlab.freedesktop.org/agd5f/linux.git git fetch --no-tags agd5f amd-staging-drm-next git checkout 6587dfd22008fbe714f3ca2d6a318140e2e1d6ce # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=s390 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All error/warnings (new ones prefixed by >>): drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c: In function 'amdgpu_ttm_init': 1815 | adev->mman.aper_base_kaddr = ioremap_cache(adev->gmc.aper_base, | ^~~~~~~~~~~~~ | ioremap_uc 1815 | adev->mman.aper_base_kaddr = ioremap_cache(adev->gmc.aper_base, | ^ cc1: some warnings being treated as errors vim +1815 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c 1768 1769 /* 1770 * amdgpu_ttm_init - Init the memory management (ttm) as well as various 1771 * gtt/vram related fields. 1772 * 1773 * This initializes all of the memory space pools that the TTM layer 1774 * will need such as the GTT space (system memory mapped to the device), 1775 * VRAM (on-board memory), and on-chip memories (GDS, GWS, OA) which 1776 * can be mapped per VMID. 1777 */ 1778 int amdgpu_ttm_init(struct amdgpu_device *adev) 1779 { 1780 uint64_t gtt_size; 1781 int r; 1782 u64 vis_vram_limit; 1783 1784 mutex_init(&adev->mman.gtt_window_lock); 1785 1786 /* No others user of address space so set it to 0 */ 1787 r = ttm_device_init(&adev->mman.bdev, &amdgpu_bo_driver, adev->dev, 1788 adev_to_drm(adev)->anon_inode->i_mapping, 1789 adev_to_drm(adev)->vma_offset_manager, 1790 adev->need_swiotlb, 1791 dma_addressing_limited(adev->dev)); 1792 if (r) { 1793 DRM_ERROR("failed initializing buffer object driver(%d).\n", r); 1794 return r; 1795 } 1796 adev->mman.initialized = true; 1797 1798 /* Initialize VRAM pool with all of VRAM divided into pages */ 1799 r = amdgpu_vram_mgr_init(adev); 1800 if (r) { 1801 DRM_ERROR("Failed initializing VRAM heap.\n"); 1802 return r; 1803 } 1804 1805 /* Reduce size of CPU-visible VRAM if requested */ 1806 vis_vram_limit = (u64)amdgpu_vis_vram_limit * 1024 * 1024; 1807 if (amdgpu_vis_vram_limit > 0 && 1808 vis_vram_limit <= adev->gmc.visible_vram_size) 1809 adev->gmc.visible_vram_size = vis_vram_limit; 1810 1811 /* Change the size here instead of the init above so only lpfn is affected */ 1812 amdgpu_ttm_set_buffer_funcs_status(adev, false); 1813 #ifdef CONFIG_64BIT 1814 if (adev->gmc.xgmi.connected_to_cpu) 1816 adev->gmc.visible_vram_size); 1817 1818 else 1819 adev->mman.aper_base_kaddr = ioremap_wc(adev->gmc.aper_base, 1820 adev->gmc.visible_vram_size); 1821 #endif 1822 1823 /* 1824 *The reserved vram for firmware must be pinned to the specified 1825 *place on the VRAM, so reserve it early. 1826 */ 1827 r = amdgpu_ttm_fw_reserve_vram_init(adev); 1828 if (r) { 1829 return r; 1830 } 1831 1832 /* 1833 * only NAVI10 and onwards ASIC support for IP discovery. 1834 * If IP discovery enabled, a block of memory should be 1835 * reserved for IP discovey. 1836 */ 1837 if (adev->mman.discovery_bin) { 1838 r = amdgpu_ttm_reserve_tmr(adev); 1839 if (r) 1840 return r; 1841 } 1842 1843 /* allocate memory as required for VGA 1844 * This is used for VGA emulation and pre-OS scanout buffers to 1845 * avoid display artifacts while transitioning between pre-OS 1846 * and driver. */ 1847 r = amdgpu_bo_create_kernel_at(adev, 0, adev->mman.stolen_vga_size, 1848 AMDGPU_GEM_DOMAIN_VRAM, 1849 &adev->mman.stolen_vga_memory, 1850 NULL); 1851 if (r) 1852 return r; 1853 r = amdgpu_bo_create_kernel_at(adev, adev->mman.stolen_vga_size, 1854 adev->mman.stolen_extended_size, 1855 AMDGPU_GEM_DOMAIN_VRAM, 1856 &adev->mman.stolen_extended_memory, 1857 NULL); 1858 if (r) 1859 return r; 1860 1861 DRM_INFO("amdgpu: %uM of VRAM memory ready\n", 1862 (unsigned) (adev->gmc.real_vram_size / (1024 * 1024))); 1863 1864 /* Compute GTT size, either bsaed on 3/4th the size of RAM size 1865 * or whatever the user passed on module init */ 1866 if (amdgpu_gtt_size == -1) { 1867 struct sysinfo si; 1868 1869 si_meminfo(&si); 1870 gtt_size = min(max((AMDGPU_DEFAULT_GTT_SIZE_MB << 20), 1871 adev->gmc.mc_vram_size), 1872 ((uint64_t)si.totalram * si.mem_unit * 3/4)); 1873 } 1874 else 1875 gtt_size = (uint64_t)amdgpu_gtt_size << 20; 1876 1877 /* Initialize GTT memory pool */ 1878 r = amdgpu_gtt_mgr_init(adev, gtt_size); 1879 if (r) { 1880 DRM_ERROR("Failed initializing GTT heap.\n"); 1881 return r; 1882 } 1883 DRM_INFO("amdgpu: %uM of GTT memory ready.\n", 1884 (unsigned)(gtt_size / (1024 * 1024))); 1885 1886 /* Initialize various on-chip memory pools */ 1887 r = amdgpu_ttm_init_on_chip(adev, AMDGPU_PL_GDS, adev->gds.gds_size); 1888 if (r) { 1889 DRM_ERROR("Failed initializing GDS heap.\n"); 1890 return r; 1891 } 1892 1893 r = amdgpu_ttm_init_on_chip(adev, AMDGPU_PL_GWS, adev->gds.gws_size); 1894 if (r) { 1895 DRM_ERROR("Failed initializing gws heap.\n"); 1896 return r; 1897 } 1898 1899 r = amdgpu_ttm_init_on_chip(adev, AMDGPU_PL_OA, adev->gds.oa_size); 1900 if (r) { 1901 DRM_ERROR("Failed initializing oa heap.\n"); 1902 return r; 1903 } 1904 1905 return 0; 1906 } 1907 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org