[kbuild-all] [arm64:for-next/fixes 3/3] arch/arm64/include/asm/cpufeature.h:273:2: warning: initialized field overwritten

tree: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/fixes head: ed888cb0d1ebce69f12794e89fbd5e2c86d40b8d commit: ed888cb0d1ebce69f12794e89fbd5e2c86d40b8d [3/3] arm64: Allow CPUs unffected by ARM erratum 1418040 to come in late config: arm64-allyesconfig (attached as .config) compiler: aarch64-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 checkout ed888cb0d1ebce69f12794e89fbd5e2c86d40b8d # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): arch/arm64/kernel/cpu_errata.c:295:13: warning: no previous prototype for 'arm64_update_smccc_conduit' [-Wmissing-prototypes] 295 | void __init arm64_update_smccc_conduit(struct alt_instr *alt, | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/cpu_errata.c:317:13: warning: no previous prototype for 'arm64_enable_wa2_handling' [-Wmissing-prototypes] 317 | void __init arm64_enable_wa2_handling(struct alt_instr *alt, | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/cpu_errata.c:486:13: warning: initialized field overwritten [-Woverride-init] 486 | .matches = is_affected_midr_range, \ | ^~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/cpu_errata.c:498:2: note: in expansion of macro 'CAP_MIDR_RANGE' 498 | CAP_MIDR_RANGE(model, v_min, r_min, v_max, r_max) | ^~~~~~~~~~~~~~ arch/arm64/kernel/cpu_errata.c:506:2: note: in expansion of macro 'ERRATA_MIDR_RANGE' 506 | ERRATA_MIDR_RANGE(m, var, r_min, var, r_max) | ^~~~~~~~~~~~~~~~~ arch/arm64/kernel/cpu_errata.c:747:3: note: in expansion of macro 'ERRATA_MIDR_REV_RANGE' 747 | ERRATA_MIDR_REV_RANGE(MIDR_CORTEX_A53, 0, 0, 4), | ^~~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/cpu_errata.c:486:13: note: (near initialization for 'erratum_843419_list[0].matches') 486 | .matches = is_affected_midr_range, \ | ^~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/cpu_errata.c:498:2: note: in expansion of macro 'CAP_MIDR_RANGE' 498 | CAP_MIDR_RANGE(model, v_min, r_min, v_max, r_max) | ^~~~~~~~~~~~~~ arch/arm64/kernel/cpu_errata.c:506:2: note: in expansion of macro 'ERRATA_MIDR_RANGE' 506 | ERRATA_MIDR_RANGE(m, var, r_min, var, r_max) | ^~~~~~~~~~~~~~~~~ arch/arm64/kernel/cpu_errata.c:747:3: note: in expansion of macro 'ERRATA_MIDR_REV_RANGE' 747 | ERRATA_MIDR_REV_RANGE(MIDR_CORTEX_A53, 0, 0, 4), | ^~~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/cpu_errata.c:486:13: warning: initialized field overwritten [-Woverride-init] 486 | .matches = is_affected_midr_range, \ | ^~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/cpu_errata.c:498:2: note: in expansion of macro 'CAP_MIDR_RANGE' 498 | CAP_MIDR_RANGE(model, v_min, r_min, v_max, r_max) | ^~~~~~~~~~~~~~ arch/arm64/kernel/cpu_errata.c:510:2: note: in expansion of macro 'ERRATA_MIDR_RANGE' 510 | ERRATA_MIDR_RANGE(model, var, rev, var, rev) | ^~~~~~~~~~~~~~~~~ arch/arm64/kernel/cpu_errata.c:753:3: note: in expansion of macro 'ERRATA_MIDR_REV' 753 | ERRATA_MIDR_REV(MIDR_BRAHMA_B53, 0, 0), | ^~~~~~~~~~~~~~~ arch/arm64/kernel/cpu_errata.c:486:13: note: (near initialization for 'erratum_843419_list[1].matches') 486 | .matches = is_affected_midr_range, \ | ^~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/cpu_errata.c:498:2: note: in expansion of macro 'CAP_MIDR_RANGE' 498 | CAP_MIDR_RANGE(model, v_min, r_min, v_max, r_max) | ^~~~~~~~~~~~~~ arch/arm64/kernel/cpu_errata.c:510:2: note: in expansion of macro 'ERRATA_MIDR_RANGE' 510 | ERRATA_MIDR_RANGE(model, var, rev, var, rev) | ^~~~~~~~~~~~~~~~~ arch/arm64/kernel/cpu_errata.c:753:3: note: in expansion of macro 'ERRATA_MIDR_REV' 753 | ERRATA_MIDR_REV(MIDR_BRAHMA_B53, 0, 0), | ^~~~~~~~~~~~~~~ In file included from arch/arm64/include/asm/ptrace.h:11, from arch/arm64/include/asm/irqflags.h:10, from include/linux/irqflags.h:16, from include/linux/rcupdate.h:26, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from include/linux/ratelimit.h:6, from include/linux/dev_printk.h:16, from include/linux/device.h:15, from include/linux/node.h:18, from include/linux/cpu.h:17, from arch/arm64/kernel/cpu_errata.c:10: 273 | (ARM64_CPUCAP_SCOPE_LOCAL_CPU | \ | ^ arch/arm64/kernel/cpu_errata.c:918:11: note: in expansion of macro 'ARM64_CPUCAP_WEAK_LOCAL_CPU_FEATURE' 918 | .type = ARM64_CPUCAP_WEAK_LOCAL_CPU_FEATURE, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/include/asm/cpufeature.h:273:2: note: (near initialization for 'arm64_errata[15].type') 273 | (ARM64_CPUCAP_SCOPE_LOCAL_CPU | \ | ^ arch/arm64/kernel/cpu_errata.c:918:11: note: in expansion of macro 'ARM64_CPUCAP_WEAK_LOCAL_CPU_FEATURE' 918 | .type = ARM64_CPUCAP_WEAK_LOCAL_CPU_FEATURE, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/cpu_errata.c:942:14: warning: initialized field overwritten [-Woverride-init] 942 | .matches = needs_tx2_tvm_workaround, | ^~~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/cpu_errata.c:942:14: note: (near initialization for 'arm64_errata[18].matches') # https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git/commit/?i... git remote add arm64 https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git git fetch --no-tags arm64 for-next/fixes git checkout ed888cb0d1ebce69f12794e89fbd5e2c86d40b8d vim +273 arch/arm64/include/asm/cpufeature.h 5b4747c5dce7a87 Suzuki K Poulose 2018-03-26 249 5b4747c5dce7a87 Suzuki K Poulose 2018-03-26 250 /* 5b4747c5dce7a87 Suzuki K Poulose 2018-03-26 251 * CPU errata workarounds that need to be enabled at boot time if one or 5b4747c5dce7a87 Suzuki K Poulose 2018-03-26 252 * more CPUs in the system requires it. When one of these capabilities 5b4747c5dce7a87 Suzuki K Poulose 2018-03-26 253 * has been enabled, it is safe to allow any CPU to boot that doesn't 5b4747c5dce7a87 Suzuki K Poulose 2018-03-26 254 * require the workaround. However, it is not safe if a "late" CPU 5b4747c5dce7a87 Suzuki K Poulose 2018-03-26 255 * requires a workaround and the system hasn't enabled it already. 5b4747c5dce7a87 Suzuki K Poulose 2018-03-26 256 */ 5b4747c5dce7a87 Suzuki K Poulose 2018-03-26 257 #define ARM64_CPUCAP_LOCAL_CPU_ERRATUM \ 5b4747c5dce7a87 Suzuki K Poulose 2018-03-26 258 (ARM64_CPUCAP_SCOPE_LOCAL_CPU | ARM64_CPUCAP_OPTIONAL_FOR_LATE_CPU) 5b4747c5dce7a87 Suzuki K Poulose 2018-03-26 259 /* 5b4747c5dce7a87 Suzuki K Poulose 2018-03-26 260 * CPU feature detected at boot time based on system-wide value of a 5b4747c5dce7a87 Suzuki K Poulose 2018-03-26 261 * feature. It is safe for a late CPU to have this feature even though ca7f686ac9fe87a Will Deacon 2018-06-15 262 * the system hasn't enabled it, although the feature will not be used 5b4747c5dce7a87 Suzuki K Poulose 2018-03-26 263 * by Linux in this case. If the system has enabled this feature already, 5b4747c5dce7a87 Suzuki K Poulose 2018-03-26 264 * then every late CPU must have it. 5b4747c5dce7a87 Suzuki K Poulose 2018-03-26 265 */ 5b4747c5dce7a87 Suzuki K Poulose 2018-03-26 266 #define ARM64_CPUCAP_SYSTEM_FEATURE \ 5b4747c5dce7a87 Suzuki K Poulose 2018-03-26 267 (ARM64_CPUCAP_SCOPE_SYSTEM | ARM64_CPUCAP_PERMITTED_FOR_LATE_CPU) 5c137714dd8cae4 Suzuki K Poulose 2018-03-26 268 /* 5c137714dd8cae4 Suzuki K Poulose 2018-03-26 269 * CPU feature detected at boot time based on feature of one or more CPUs. 5c137714dd8cae4 Suzuki K Poulose 2018-03-26 270 * All possible conflicts for a late CPU are ignored. 5c137714dd8cae4 Suzuki K Poulose 2018-03-26 271 */ 5c137714dd8cae4 Suzuki K Poulose 2018-03-26 272 #define ARM64_CPUCAP_WEAK_LOCAL_CPU_FEATURE \ 5c137714dd8cae4 Suzuki K Poulose 2018-03-26 @273 (ARM64_CPUCAP_SCOPE_LOCAL_CPU | \ 5c137714dd8cae4 Suzuki K Poulose 2018-03-26 274 ARM64_CPUCAP_OPTIONAL_FOR_LATE_CPU | \ 5c137714dd8cae4 Suzuki K Poulose 2018-03-26 275 ARM64_CPUCAP_PERMITTED_FOR_LATE_CPU) 5b4747c5dce7a87 Suzuki K Poulose 2018-03-26 276 :::::: The code at line 273 was first introduced by commit :::::: 5c137714dd8cae464dbd5f028c07af149e6d09fc arm64: capabilities: Introduce weak features based on local CPU :::::: TO: Suzuki K Poulose <suzuki.poulose(a)arm.com&gt; :::::: CC: Will Deacon <will.deacon(a)arm.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org