arch/x86/kernel/cpu/sgx/main.c:124: warning: Function parameter or member 'low' not described in 'sgx_calc_section_metric'

From: kernel test robot
Date: Sat Jan 06 2024 - 13:36:14 EST


Hi Sean,

FYI, the error/warning still remains.

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 95c8a35f1c017327eab3b6a2ff5c04255737c856
commit: e7e0545299d8cb0fd6fe3ba50401b7f5c3937362 x86/sgx: Initialize metadata for Enclave Page Cache (EPC) sections
date: 3 years, 2 months ago
config: x86_64-buildonly-randconfig-006-20240105 (https://download.01.org/0day-ci/archive/20240107/202401070210.pQcalZHm-lkp@xxxxxxxxx/config)
compiler: ClangBuiltLinux clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240107/202401070210.pQcalZHm-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202401070210.pQcalZHm-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

>> arch/x86/kernel/cpu/sgx/main.c:124: warning: Function parameter or member 'low' not described in 'sgx_calc_section_metric'
>> arch/x86/kernel/cpu/sgx/main.c:124: warning: Function parameter or member 'high' not described in 'sgx_calc_section_metric'
>> arch/x86/kernel/cpu/sgx/main.c:124: warning: expecting prototype for A section metric is concatenated in a way that @low bits 12(). Prototype was for sgx_calc_section_metric() instead


vim +124 arch/x86/kernel/cpu/sgx/main.c

117
118 /**
119 * A section metric is concatenated in a way that @low bits 12-31 define the
120 * bits 12-31 of the metric and @high bits 0-19 define the bits 32-51 of the
121 * metric.
122 */
123 static inline u64 __init sgx_calc_section_metric(u64 low, u64 high)
> 124 {
125 return (low & GENMASK_ULL(31, 12)) +
126 ((high & GENMASK_ULL(19, 0)) << 32);
127 }
128

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