Hi, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on drm-tip/drm-tip] url: https://github.com/intel-lab-lkp/linux/commits/priyanka-dandamudi-intel-com/Add-support-for-LMEM-PCIe-resizable-bar/20220711-014151 base: git://anongit.freedesktop.org/drm/drm-tip drm-tip config: i386-randconfig-a004 (https://download.01.org/0day-ci/archive/20220711/202207110435.SWciztlI-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 6ce63e267aab79ca87bf63453d34dd3909ab978d) 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/d47a4cf71ae8f491be93278f21adfec16dc00d5c git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review priyanka-dandamudi-intel-com/Add-support-for-LMEM-PCIe-resizable-bar/20220711-014151 git checkout d47a4cf71ae8f491be93278f21adfec16dc00d5c # 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=i386 SHELL=/bin/bash drivers/gpu/drm/i915/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/gpu/drm/i915/gt/intel_region_lmem.c:76:45: warning: format specifies type 'unsigned long long' but the argument has type 'resource_size_t' (aka 'unsigned int') [-Wformat] "setting it to default: %llu\n", lmem_size); ~~~~ ^~~~~~~~~ %u include/drm/drm_print.h:429:36: note: expanded from macro 'drm_info' __drm_printk((drm), info,, fmt, ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ include/drm/drm_print.h:425:48: note: expanded from macro '__drm_printk' dev_##level##type((drm)->dev, "[drm] " fmt, ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ include/linux/dev_printk.h:150:67: note: expanded from macro 'dev_info' dev_printk_index_wrap(_dev_info, KERN_INFO, dev, dev_fmt(fmt), ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ include/linux/dev_printk.h:110:23: note: expanded from macro 'dev_printk_index_wrap' _p_func(dev, fmt, ##__VA_ARGS__); \ ~~~ ^~~~~~~~~~~ drivers/gpu/drm/i915/gt/intel_region_lmem.c:93:44: warning: result of comparison of constant 4294967296 with expression of type 'resource_size_t' (aka 'unsigned int') is always false [-Wtautological-constant-out-of-range-compare] IORESOURCE_MEM_64) && root_res->start > 0x100000000ull) ~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~ 2 warnings generated. vim +76 drivers/gpu/drm/i915/gt/intel_region_lmem.c 46 47 #define LMEM_BAR_NUM 2 48 static void i915_resize_lmem_bar(struct drm_i915_private *i915, resource_size_t lmem_size) 49 { 50 struct pci_dev *pdev = to_pci_dev(i915->drm.dev); 51 struct pci_bus *root = pdev->bus; 52 struct resource *root_res; 53 resource_size_t rebar_size; 54 resource_size_t current_size; 55 u32 pci_cmd; 56 int i; 57 58 current_size = roundup_pow_of_two(pci_resource_len(pdev, LMEM_BAR_NUM)); 59 60 if (i915->params.lmem_bar_size) { 61 u32 bar_sizes; 62 63 rebar_size = i915->params.lmem_bar_size * 64 (resource_size_t)SZ_1M; 65 bar_sizes = pci_rebar_get_possible_sizes(pdev, 66 LMEM_BAR_NUM); 67 68 if (rebar_size == current_size) 69 return; 70 71 if (!(bar_sizes & BIT(pci_rebar_bytes_to_size(rebar_size))) || 72 rebar_size >= roundup_pow_of_two(lmem_size)) { 73 rebar_size = lmem_size; 74 75 drm_info(&i915->drm, "Given bar size is not within supported size," > 76 "setting it to default: %llu\n", lmem_size); 77 } 78 } else { 79 rebar_size = current_size; 80 81 if (rebar_size != roundup_pow_of_two(lmem_size)) 82 rebar_size = lmem_size; 83 else 84 return; 85 } 86 87 /* Find out if root bus contains 64bit memory addressing */ 88 while (root->parent) 89 root = root->parent; 90 91 pci_bus_for_each_resource(root, root_res, i) { 92 if (root_res && root_res->flags & (IORESOURCE_MEM | 93 IORESOURCE_MEM_64) && root_res->start > 0x100000000ull) 94 break; 95 } 96 97 /* pci_resize_resource will fail anyways */ 98 if (!root_res) { 99 drm_info(&i915->drm, "Can't resize LMEM BAR - platform support is missing\n"); 100 return; 101 } 102 103 /* First disable PCI memory decoding references */ 104 pci_read_config_dword(pdev, PCI_COMMAND, &pci_cmd); 105 pci_write_config_dword(pdev, PCI_COMMAND, 106 pci_cmd & ~PCI_COMMAND_MEMORY); 107 108 _resize_bar(i915, LMEM_BAR_NUM, rebar_size); 109 110 pci_assign_unassigned_bus_resources(pdev->bus); 111 pci_write_config_dword(pdev, PCI_COMMAND, pci_cmd); 112 } 113 -- 0-DAY CI Kernel Test Service https://01.org/lkp
