Hi Chris, Thank you for the patch! Yet something to improve: [auto build test ERROR on drm-intel/for-linux-next] [also build test ERROR on v5.0 next-20190306] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Chris-Wilson/drm-i915-Engine-discovery-the-HW-bits/20190315-065822 base: git://anongit.freedesktop.org/drm-intel for-linux-next config: x86_64-allyesconfig (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): In file included from include/linux/vmalloc.h:11:0, from include/asm-generic/io.h:894, from arch/x86/include/asm/io.h:383, from arch/x86/include/asm/realmode.h:15, from arch/x86/include/asm/acpi.h:33, from arch/x86/include/asm/fixmap.h:29, from arch/x86/include/asm/apic.h:10, from arch/x86/include/asm/smp.h:13, from arch/x86/include/asm/mmzone_64.h:11, from arch/x86/include/asm/mmzone.h:5, from include/linux/mmzone.h:918, from include/linux/gfp.h:6, from include/linux/slab.h:15, from include/linux/io-mapping.h:22, from drivers/gpu//drm/i915/i915_drv.h:36, from drivers/gpu//drm/i915/i915_query.c:9: drivers/gpu//drm/i915/i915_query.c: In function 'query_engine_hw_info_v1': drivers/gpu//drm/i915/i915_query.c:103:59: error: 'struct intel_runtime_info' has no member named 'num_engines'; did you mean 'num_sprites'? sz = struct_size(query_ptr, engines, RUNTIME_INFO(i915)->num_engines); ^ include/linux/overflow.h:305:14: note: in definition of macro 'struct_size' __ab_c_size(n, \ ^ >> drivers/gpu//drm/i915/i915_query.c:107:8: error: implicit declaration of function 'copy_query_item'; did you mean 'copy_from_iter'? [-Werror=implicit-function-declaration] ret = copy_query_item(&query, sizeof(query), sz, query_item); ^~~~~~~~~~~~~~~ copy_from_iter cc1: some warnings being treated as errors vim +107 drivers/gpu//drm/i915/i915_query.c 8 > 9 #include "i915_drv.h" 10 #include "i915_query.h" 11 #include <uapi/drm/i915_drm.h> 12 13 static int query_topology_info(struct drm_i915_private *dev_priv, 14 struct drm_i915_query_item *query_item) 15 { 16 const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu; 17 struct drm_i915_query_topology_info topo; 18 u32 slice_length, subslice_length, eu_length, total_length; 19 20 if (query_item->flags != 0) 21 return -EINVAL; 22 23 if (sseu->max_slices == 0) 24 return -ENODEV; 25 26 BUILD_BUG_ON(sizeof(u8) != sizeof(sseu->slice_mask)); 27 28 slice_length = sizeof(sseu->slice_mask); 29 subslice_length = sseu->max_slices * 30 DIV_ROUND_UP(sseu->max_subslices, BITS_PER_BYTE); 31 eu_length = sseu->max_slices * sseu->max_subslices * 32 DIV_ROUND_UP(sseu->max_eus_per_subslice, BITS_PER_BYTE); 33 34 total_length = sizeof(topo) + slice_length + subslice_length + eu_length; 35 36 if (query_item->length == 0) 37 return total_length; 38 39 if (query_item->length < total_length) 40 return -EINVAL; 41 42 if (copy_from_user(&topo, u64_to_user_ptr(query_item->data_ptr), 43 sizeof(topo))) 44 return -EFAULT; 45 46 if (topo.flags != 0) 47 return -EINVAL; 48 49 if (!access_ok(u64_to_user_ptr(query_item->data_ptr), 50 total_length)) 51 return -EFAULT; 52 53 memset(&topo, 0, sizeof(topo)); 54 topo.max_slices = sseu->max_slices; 55 topo.max_subslices = sseu->max_subslices; 56 topo.max_eus_per_subslice = sseu->max_eus_per_subslice; 57 58 topo.subslice_offset = slice_length; 59 topo.subslice_stride = DIV_ROUND_UP(sseu->max_subslices, BITS_PER_BYTE); 60 topo.eu_offset = slice_length + subslice_length; 61 topo.eu_stride = 62 DIV_ROUND_UP(sseu->max_eus_per_subslice, BITS_PER_BYTE); 63 64 if (__copy_to_user(u64_to_user_ptr(query_item->data_ptr), 65 &topo, sizeof(topo))) 66 return -EFAULT; 67 68 if (__copy_to_user(u64_to_user_ptr(query_item->data_ptr + sizeof(topo)), 69 &sseu->slice_mask, slice_length)) 70 return -EFAULT; 71 72 if (__copy_to_user(u64_to_user_ptr(query_item->data_ptr + 73 sizeof(topo) + slice_length), 74 sseu->subslice_mask, subslice_length)) 75 return -EFAULT; 76 77 if (__copy_to_user(u64_to_user_ptr(query_item->data_ptr + 78 sizeof(topo) + 79 slice_length + subslice_length), 80 sseu->eu_mask, eu_length)) 81 return -EFAULT; 82 83 return total_length; 84 } 85 86 static int 87 query_engine_hw_info_v1(struct drm_i915_private *i915, 88 struct drm_i915_query_item *query_item) 89 { 90 struct drm_i915_query_engine_hw_info_v1 __user *query_ptr = 91 u64_to_user_ptr(query_item->data_ptr); 92 struct drm_i915_query_engine_hw_info_v1 query; 93 struct i915_engine_hw_info_v1 __user *out; 94 struct i915_engine_hw_info_v1 info = {}; 95 struct intel_engine_cs *engine; 96 enum intel_engine_id id; 97 int ret, i; 98 size_t sz; 99 100 if (query_item->flags) 101 return -EINVAL; 102 103 sz = struct_size(query_ptr, engines, RUNTIME_INFO(i915)->num_engines); 104 if (sz > INT_MAX) 105 return -EINVAL; 106 > 107 ret = copy_query_item(&query, sizeof(query), sz, query_item); 108 if (ret) 109 return ret; 110 111 if (query.num_engines) 112 return -EINVAL; 113 114 if (query.flags) 115 return -EINVAL; 116 117 for (i = 0; i < ARRAY_SIZE(query.rsvd); i++) { 118 if (query.rsvd[i]) 119 return -EINVAL; 120 } 121 122 query.flags |= I915_QUERY_HW_INFO_HAS_HW_ID; 123 query.flags |= I915_QUERY_HW_INFO_HAS_MMIO_BASE; 124 query.flags |= I915_QUERY_HW_INFO_HAS_CONTEXT_SIZE; 125 126 out = query_ptr->engines; 127 for_each_engine(engine, i915, id) { 128 info.hw_id = engine->hw_id; 129 info.mmio_base = engine->mmio_base; 130 info.context_size = engine->context_size; 131 132 if (__copy_to_user(out, &info, sizeof(info))) 133 return -EFAULT; 134 135 out++; 136 } 137 query.num_engines = out - query_ptr->engines; 138 139 if (__copy_to_user(query_ptr, &query, sizeof(query))) 140 return -EFAULT; 141 142 return sz; 143 } 144 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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