Hi Hans, I love your patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v4.16-rc7] [cannot apply to next-20180329] [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/Hans-de-Goede/efi-Export-boot-services-code-and-data-as-debugfs-blobs/20180401-062627 config: arm64-defconfig (attached as .config) compiler: aarch64-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=arm64 All error/warnings (new ones prefixed by >>): drivers/firmware/efi/embedded-firmware.c: In function 'efi_check_md_for_embedded_firmware': >> drivers/firmware/efi/embedded-firmware.c:125:8: error: implicit declaration of function 'memremap'; did you mean 'memset_p'? [-Werror=implicit-function-declaration] mem = memremap(md->phys_addr, size, MEMREMAP_WB); ^~~~~~~~ memset_p >> drivers/firmware/efi/embedded-firmware.c:125:38: error: 'MEMREMAP_WB' undeclared (first use in this function) mem = memremap(md->phys_addr, size, MEMREMAP_WB); ^~~~~~~~~~~ drivers/firmware/efi/embedded-firmware.c:125:38: note: each undeclared identifier is reported only once for each function it appears in >> drivers/firmware/efi/embedded-firmware.c:142:2: error: implicit declaration of function 'memunmap'; did you mean 'memcmp'? [-Werror=implicit-function-declaration] memunmap(mem); ^~~~~~~~ memcmp drivers/firmware/efi/embedded-firmware.c: In function 'efi_get_embedded_fw': >> drivers/firmware/efi/embedded-firmware.c:222:9: error: implicit declaration of function 'vmalloc'; did you mean 'd_alloc'? [-Werror=implicit-function-declaration] buf = vmalloc(fw->length); ^~~~~~~ d_alloc >> drivers/firmware/efi/embedded-firmware.c:222:7: warning: assignment makes pointer from integer without a cast [-Wint-conversion] buf = vmalloc(fw->length); ^ cc1: some warnings being treated as errors vim +125 drivers/firmware/efi/embedded-firmware.c 109 110 /* 111 * Note the efi_check_for_embedded_firmwares() code currently makes the 112 * following 2 assumptions. This may needs to be revisited if embedded firmware 113 * is found where this is not true: 114 * 1) The firmware is only found in EFI_BOOT_SERVICES_CODE memory segments 115 * 2) The firmware always starts at an offset which is a multiple of 8 bytes 116 */ 117 static int __init efi_check_md_for_embedded_firmware( 118 efi_memory_desc_t *md, const struct embedded_fw_desc *desc) 119 { 120 u64 i, size; 121 u32 crc; 122 u8 *mem; 123 124 size = md->num_pages << EFI_PAGE_SHIFT; > 125 mem = memremap(md->phys_addr, size, MEMREMAP_WB); 126 if (!mem) { 127 pr_err("Error mapping EFI mem at %#llx\n", md->phys_addr); 128 return -ENOMEM; 129 } 130 131 size -= desc->length; 132 for (i = 0; i < size; i += 8) { 133 if (*((u64 *)(mem + i)) != *((u64 *)desc->prefix)) 134 continue; 135 136 /* Seed with ~0, invert to match crc32 userspace utility */ 137 crc = ~crc32(~0, mem + i, desc->length); 138 if (crc == desc->crc) 139 break; 140 } 141 > 142 memunmap(mem); 143 144 if (i >= size) 145 return -ENOENT; 146 147 pr_info("Found EFI embedded fw '%s' crc %08x\n", desc->name, desc->crc); 148 149 if (found_fw_count >= MAX_EMBEDDED_FIRMWARES) { 150 pr_err("Error already have %d embedded firmwares\n", 151 MAX_EMBEDDED_FIRMWARES); 152 return -ENOSPC; 153 } 154 155 found_fw[found_fw_count].data = 156 memremap(md->phys_addr + i, desc->length, MEMREMAP_WB); 157 if (!found_fw[found_fw_count].data) { 158 pr_err("Error mapping embedded firmware\n"); 159 return -ENOMEM; 160 } 161 162 found_fw[found_fw_count].name = desc->name; 163 found_fw[found_fw_count].length = desc->length; 164 found_fw_count++; 165 166 /* Note md points to *unmapped* memory after this!!! */ 167 efi_mem_reserve(md->phys_addr + i, desc->length); 168 return 0; 169 } 170 171 void __init efi_check_for_embedded_firmwares(void) 172 { 173 const struct embedded_fw_desc *fw_desc; 174 const struct dmi_system_id *dmi_id; 175 efi_memory_desc_t *md; 176 int i, r; 177 178 dmi_id = dmi_first_match(embedded_fw_table); 179 if (!dmi_id) 180 return; 181 182 fw_desc = dmi_id->driver_data; 183 for (i = 0; fw_desc[i].length; i++) { 184 for_each_efi_memory_desc(md) { 185 if (md->type != EFI_BOOT_SERVICES_CODE) 186 continue; 187 188 r = efi_check_md_for_embedded_firmware(md, &fw_desc[i]); 189 if (r == 0) { 190 /* 191 * On success efi_mem_reserve() has been called 192 * installing a new memmap, so our pointers 193 * are invalid now and we MUST break the loop. 194 */ 195 break; 196 } 197 } 198 } 199 } 200 201 int efi_get_embedded_fw(const char *name, void **data, size_t *size, 202 size_t msize) 203 { 204 struct embedded_fw *fw = NULL; 205 void *buf = *data; 206 int i; 207 208 for (i = 0; i < found_fw_count; i++) { 209 if (strcmp(name, found_fw[i].name) == 0) { 210 fw = &found_fw[i]; 211 break; 212 } 213 } 214 215 if (!fw) 216 return -ENOENT; 217 218 if (msize && msize < fw->length) 219 return -EFBIG; 220 221 if (!buf) { > 222 buf = vmalloc(fw->length); --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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